CN116255439B - Push rod device of window-engraving type plastic nut - Google Patents
Push rod device of window-engraving type plastic nutInfo
- Publication number
- CN116255439B CN116255439B CN202310477180.1A CN202310477180A CN116255439B CN 116255439 B CN116255439 B CN 116255439B CN 202310477180 A CN202310477180 A CN 202310477180A CN 116255439 B CN116255439 B CN 116255439B
- Authority
- CN
- China
- Prior art keywords
- plastic nut
- gear
- plastic
- push rod
- screw rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2031—Actuator casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2081—Parallel arrangement of drive motor to screw axis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
Abstract
本发明提供一种镂窗式塑料螺母的推杆装置，涉及推杆装置技术领域，包括装配壳体、丝杆、塑料螺母和金属管，所述装配壳体内设有减速驱动机构，所述丝杆的一端转动设置在所述装配壳体上，所述丝杆通过减速驱动机构驱动设置，所述塑料螺母螺纹转动设置在所述丝杆外侧，所述金属管设置在所述塑料螺母外侧，所述丝杆通过减速驱动机构驱动转动，带动所述塑料螺母在所述丝杆上做往复直线运动，所述塑料螺母的外侧设有镂空槽，所述塑料螺母可拼接设有多个。本发明通过设置的多个塑料螺母，配合在塑料螺母外侧设置均匀的镂空槽，便于在塑料螺母受热或是受冷发生形变时，可向镂空槽内挤压，增加塑料螺母的膨胀空间。
The present invention provides a push rod device for a hollow window type plastic nut, which relates to the technical field of push rod devices and includes an assembly housing, a screw rod, a plastic nut, and a metal tube. A reduction drive mechanism is provided in the assembly housing, one end of the screw rod is rotatably arranged on the assembly housing, the screw rod is driven and arranged by the reduction drive mechanism, the plastic nut is threaded and rotatably arranged on the outside of the screw rod, the metal tube is arranged on the outside of the plastic nut, the screw rod is driven and rotated by the reduction drive mechanism, and drives the plastic nut to perform reciprocating linear motion on the screw rod. A hollow groove is provided on the outside of the plastic nut, and multiple plastic nuts can be spliced. The present invention provides multiple plastic nuts, and the uniform hollow grooves are provided on the outside of the plastic nut, so that when the plastic nut is heated or cooled and deformed, it can be squeezed into the hollow groove, thereby increasing the expansion space of the plastic nut.
Description
Technical Field
The invention relates to the technical field of push rod devices, in particular to a push rod device of a window-engraving type plastic nut.
Background
The technology of generating electricity by adopting a solar power generation device is increasingly commonly applied in the global scope, in order to realize the maximization of the solar power generation device to solar energy utilization, the prior art realizes the real-time adjustment of the lifting and/or angle of a solar sailboard in the solar power generation device along with different spatial angle positions of the sun by adopting a solar tracking bracket, and the lifting and/or angle adjustment functions of the solar tracking bracket are realized by adopting a push rod device. Because the solar power generation device uses outdoor environment with severe environment, and the solar power generation device needs to work in the strong wind under the condition of being capable of tolerating the ambient temperature of minus 30 ℃ to 70 ℃, the acting force of wind power on the solar power generation device is large, the use of the push rod device is strictly required, and each set of push rod device is required to be capable of bearing static load of not less than 3 tons and simultaneously is required to be capable of bearing dynamic load of not less than 1 ton.
In order to meet the requirements that the solar tracking support can normally work at the ambient temperature of minus 30 ℃ to 70 ℃, can bear static load of not less than 3 tons and dynamic load of not less than 1 ton, and has the service life of not less than 5000 hours. The push rod device is positioned for realizing the lifting and/or angle adjusting functions of the solar tracking support, the service life of the push rod device is designed to be longer than 10000 times of circulation for lifting and/or angle adjusting, wherein a screw rod and a nut play a vital role, and the screw rod is made of metal materials in general in order to reduce abrasion of the screw rod and the nut in reciprocating spiral motion, but the nut is usually more in general in order to adopt copper nuts and plastic nuts.
The copper nut has the advantages that 1, the copper nut is used in severe air temperature environments with large temperature change, has high strength and can bear large static load and dynamic load, and 2, the copper nut has small linear expansion coefficient, and the problem of axial expansion is avoided along with the increase and decrease of the environmental temperature. However, the copper nut has the defects that the copper nut has poor self-lubricating capability when being used in severe air temperature environment with large temperature change, and the lifting frequency is less than 150 times by taking the lifting distance of the copper nut as an example under the dynamic load of 1 ton, so that the copper nut and a screw rod can move smoothly in the spiral transmission process by adding lubricating grease frequently. If the lifting times of the grease without adding the lubricating grease reach about 200 times, the screw rod can completely abrade the copper nut, so that the whole push rod device loses the working capacity. In general, a solar power plant has thousands of push rod devices, and the frequent filling of lubricating grease requires huge cost, manpower and material resources.
The plastic nut has the advantages that the plastic nut has good self-lubricating performance, the lubrication in the whole life cycle can be satisfied by adding lubricating grease once, and the screw transmission process with the screw rod can be ensured to be smooth without frequent addition of lubricating oil. However, the plastic nut has the defects that the plastic nut cannot bear larger static load and dynamic load due to poor strength, and if the plastic nut is used in severe air temperature environment with larger temperature change by increasing the length of a single nut, axial expansion and death can be generated due to large linear expansion coefficient of the plastic nut.
The plastic nut has the advantages that the plastic nut has good self-lubricating performance, the lubrication in the whole life cycle can be satisfied by adding lubricating grease once, and the screw transmission process with the screw rod can be ensured to be smooth without frequent addition of lubricating oil. However, the plastic nut has the defects that the plastic nut cannot bear larger static load and dynamic load due to poor strength, and if the plastic nut is used in severe air temperature environment with larger temperature change by increasing the length of a single nut, axial expansion and death can be generated due to large linear expansion coefficient of the plastic nut.
Disclosure of Invention
The invention aims to solve the problem that in the prior art, axial expansion and death can be generated due to large linear expansion coefficient of plastic materials when the plastic material is used in severe air temperature environments with large temperature variation.
In order to achieve the purpose, the push rod device of the window-type plastic nut comprises an assembly shell, a screw rod, a plastic nut and a metal tube, wherein a speed reduction driving mechanism is arranged in the assembly shell, one end of the screw rod is rotatably arranged on the assembly shell, the screw rod is arranged in a driving mode through the speed reduction driving mechanism, threads of the plastic nut are rotatably arranged on the outer side of the screw rod, the metal tube is arranged on the outer side of the plastic nut, the screw rod is driven to rotate through the speed reduction driving mechanism to drive the plastic nut to do reciprocating linear motion on the screw rod, hollow grooves are formed in the outer side of the plastic nut, and a plurality of plastic nuts can be spliced.
As a preferred implementation mode, the speed reduction driving mechanism comprises a motor, a driving gear, a driven gear and a speed reduction gear set, wherein the driving gear, the speed reduction gear set and the driven gear are all rotationally arranged in the assembly shell, one end of the screw rod is in linkage with the driven gear, the driving gear is in linkage arrangement with the driven gear through the speed reduction gear set, the driving gear is driven by the motor and drives the driving gear to rotate through driving the motor, so that the speed reduction gear set and the driven gear are driven to be meshed to rotate, so that the screw rod is driven to rotate, and the screw rod is decelerated to rotate through the set speed reduction gear set.
As a preferred embodiment, the reduction gear set comprises a first gear, a second gear and a third gear, the first gear and the driving gear are coaxially and cooperatively arranged, the second gear and the third gear are coaxially and cooperatively arranged, the first gear and the second gear are meshed and are cooperatively arranged, the third gear and the driven gear are cooperatively arranged, the diameters of the first gear, the second gear and the driven gear are sequentially increased, the driving gear is driven to rotate by a motor, the first gear is driven to rotate, the second gear and the third gear are driven to rotate, and the number of teeth of the first gear is smaller than that of the second gear, so that the number of teeth of the first gear is smaller than that of the second gear, the number of teeth of the driven gear meshed with the third gear is smaller than that of the third gear, and the driven gear can be effectively reduced by the reduction gear set.
As a preferred implementation mode, be equipped with the fixed pipe on the assembly casing, the fixed pipe inboard through the bearing with the lead screw assembly is connected, the lead screw with bearing assembly junction position department surface smoothness sets up, through the fixed pipe that sets up, the bearing of cooperation setting has increased the lead screw pivoted stability on the assembly casing, rotates the lead screw through the fixed pipe and carries out spacing bearing.
As a preferred implementation mode, the metal pipe is provided with a switch contact ring arranged at the outer side of one end of the plastic nut, a switch used for starting the motor is arranged on the switch contact ring, when the push rod device is driven, the switch on the switch contact ring is triggered, the motor is driven to rotate, the speed reduction driving mechanism is driven to operate, and then the screw rod is driven to rotate.
As a preferred implementation mode, the plastic nut is equipped with a plurality of and splices each other and set up the one end inboard of tubular metal resonator, the fretwork groove is vertical strip evenly distributed setting in the plastic nut outside, through a plurality of plastic nuts that set up, can supply extra expansion space when plastic nut takes place to deform, through setting up even fretwork groove in the plastic nut outside, be convenient for when plastic nut is heated or is cooled and takes place to deform, can extrude to the fretwork inslot, increase plastic nut's expansion space.
As a preferred implementation mode, one end of the plastic nut is provided with a limiting block, the other end of the plastic nut is provided with a limiting groove matched with the limiting block, the length of the limiting block is longer than the depth of the limiting groove, limiting is conveniently carried out between two adjacent plastic nuts through the clamping arrangement of the limiting block and the limiting groove, and a gap is reserved between the two adjacent plastic nuts during splicing due to the fact that the length of the limiting block is longer than the depth of the limiting groove, so that the plastic nuts can be extruded during expansion deformation.
As a preferable implementation mode, the length difference between the limiting block and the limiting groove is one tenth of the whole length of the plastic nut.
As a preferred implementation mode, the outside central point department of plastic nut is equipped with the collar, the collar outside with the plastic nut outside flushes, be equipped with the screw hole on the collar, the screw thread wears to be equipped with the bolt on the tubular metal resonator, the one end screw thread of bolt run through the tubular metal resonator and with screw hole screw thread assembly connection, when installing plastic nut with between the tubular metal resonator, run through the one end screw thread of bolt and set up the tubular metal resonator and with screw hole screw thread rotation connection, realize the installation operation to between plastic nut and the tubular metal resonator.
As a preferred implementation mode, the lead screw is kept away from be equipped with the spacing ring on the one end lateral wall of plastic nut, the spacing ring outer wall with the metal tube inner wall slides and sets up, the terminal surface of metal tube is equipped with the connector, through the spacing ring that sets up, can guarantee the stability that removes when the lead screw slides in the metal tube, can not appear because of the longer wobbling phenomenon of lead screw, through the connector that sets up, be convenient for install the metal tube.
Compared with the prior art, the invention has the advantages and positive effects that,
1. According to the invention, the plurality of plastic nuts are arranged, so that extra expansion space is available for the plastic nuts to deform, and the even hollow grooves are arranged on the outer sides of the plastic nuts, so that the plastic nuts can be conveniently extruded into the hollow grooves when the plastic nuts deform due to heating or cooling, and the expansion space of the plastic nuts is increased.
2. According to the invention, the stability of the rotation of the screw rod on the assembly shell is increased by the fixed pipe and the bearing, and the rotation of the screw rod is limited by the fixed pipe.
3. When the plastic nut and the metal pipe are installed, one end thread of the bolt penetrates through the metal pipe and is in threaded rotation connection with the threaded hole, so that the installation operation between the plastic nut and the metal pipe is realized, and the installation stability of the plastic nut is ensured.
4. According to the invention, through the limiting ring, the moving stability of the screw rod can be ensured when the screw rod slides in the metal tube, and the phenomenon of swinging caused by longer screw rod can be avoided.
Drawings
Fig. 1 is a perspective view of a push rod device of a windowed plastic nut according to the present invention;
Fig. 2 is an assembly schematic diagram of an assembly housing and a reduction driving mechanism of a push rod device of a hollow-out plastic nut according to the present invention;
fig. 3 is an assembly schematic diagram of an assembly housing and a screw of a push rod device of a window-engraved plastic nut according to the present invention;
Fig. 4 is a schematic view of an internal assembly structure of a metal tube of a push rod device of a hollow-out plastic nut according to the present invention;
fig. 5 is an assembly schematic diagram of a screw rod and a plastic nut of a push rod device of a window-type plastic nut provided by the invention;
fig. 6 is an enlarged schematic view of a structure a in fig. 4 of a push rod device of a window-engraved plastic nut according to the present invention;
Fig. 7 is a perspective view of a plastic nut of a push rod device of a windowed plastic nut according to the present invention.
Legend description:
1. The assembly shell comprises 2 parts of a screw rod, 3 parts of a plastic nut, 4 parts of a metal tube, 5 parts of a hollow groove, 61 parts of a motor, 62 parts of a driving gear, 63 parts of a driven gear, 71 parts of a first gear, 72 parts of a second gear, 73 parts of a third gear, 81 parts of a fixed tube, 82 parts of a bearing, 9 parts of a switch contact ring, 101 parts of a limiting block, 102 parts of a limiting groove, 111 parts of a mounting ring, 112 parts of a threaded hole, 113 parts of a bolt, 121 parts of a limiting ring, 122 parts of a connector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the invention provides a technical scheme that a push rod device of a window-type plastic nut comprises an assembly shell 1, a screw rod 2, a plastic nut 3 and a metal tube 4, wherein a speed reduction driving mechanism is arranged in the assembly shell 1, one end of the screw rod 2 is rotatably arranged on the assembly shell 1, the screw rod 2 is driven by the speed reduction driving mechanism, threads of the plastic nut 3 are rotatably arranged on the outer side of the screw rod 2, the metal tube 4 is arranged on the outer side of the plastic nut 3, the screw rod 2 is driven by the speed reduction driving mechanism to rotate, the plastic nut 3 is driven to do reciprocating linear motion on the screw rod 2, a hollow groove 5 is arranged on the outer side of the plastic nut 3, and a plurality of plastic nuts 3 can be spliced.
As shown in fig. 1 to 7, the reduction driving mechanism includes a motor 61, a driving gear 62, a driven gear 63 and a reduction gear set, the driving gear 62, the reduction gear set and the driven gear 63 are all rotatably disposed in the assembly housing 1, one end of the screw rod 2 is disposed in linkage with the driven gear 63, the driving gear 62 is disposed in linkage with the driven gear 63 through the reduction gear set, the driving gear 62 is driven by the motor 61 to rotate, the reduction gear set and the driven gear 63 are driven to rotate in meshed manner, the screw rod 2 is driven to rotate, and the screw rod 2 is reduced in speed by the reduction gear set.
As shown in fig. 1 to 7, the reduction gear set includes a first gear 71, a second gear 72 and a third gear 73, the first gear 71 is coaxially and cooperatively arranged with the driving gear 62, the second gear 72 is coaxially and cooperatively arranged with the third gear 73, the first gear 71 is meshed with the second gear 72, the third gear 73 is cooperatively arranged with the driven gear 63, the diameters of the first gear 71, the second gear 72 and the driven gear 63 are sequentially increased, the driving gear 62 is driven to rotate by the motor 61, the first gear 71 is driven to rotate, and then the second gear 72 and the third gear 73 are driven to rotate, because the number of teeth of the first gear 71 is smaller than that of the second gear 72, the rotation speed of the driven gear 63 meshed with the third gear 73 is smaller than that of the third gear 73, and therefore effective reduction operation can be performed on the driven gear 63 through the reduction gear set.
As shown in fig. 1-7, a fixed tube 81 is arranged on the assembly housing 1, the inner side of the fixed tube 81 is assembled and connected with a screw rod 2 through a bearing 82, the surface of the position where the screw rod 2 is assembled and connected with the bearing 82 is smooth, the fixed tube 81 is matched with the bearing 82, the stability of the screw rod 2 rotating on the assembly housing 1 is improved, and the screw rod 2 rotates through the fixed tube 81 to carry out limit bearing.
As shown in fig. 1-7, a switch contact ring 9 is arranged at the outer side of one end of the metal tube 4 provided with the plastic nut 3, a switch for starting a motor 61 is arranged on the switch contact ring 9, when the push rod device is driven, the switch on the switch contact ring 9 is triggered, the motor 61 is driven to rotate, a speed reduction driving mechanism is driven to operate, and then the screw rod 2 is driven to rotate.
As shown in fig. 1-7, the plastic nut 3 is provided with a plurality of hollow grooves 5 which are mutually spliced and arranged at the inner side of one end of the metal tube 4, the hollow grooves 5 are uniformly distributed in a longitudinal strip shape and arranged at the outer side of the plastic nut 3, and the plastic nut 3 can be provided with additional expansion space when deformed through the plurality of arranged plastic nuts 3, and the hollow grooves 5 which are uniformly arranged at the outer side of the plastic nut 3 are convenient for extruding into the hollow grooves 5 when the plastic nut 3 is heated or is subjected to cold deformation, so that the expansion space of the plastic nut 3 is increased.
As shown in fig. 1-7, one end of the plastic nut 3 is provided with a limiting block 101, the other end of the plastic nut 3 is provided with a limiting groove 102 which is matched with the limiting block 101 in a clamping manner, the length of the limiting block 101 is longer than the depth of the limiting groove 102, limiting is conveniently carried out between two adjacent plastic nuts 3 through the clamping arrangement of the limiting block 101 and the limiting groove 102, and when the two adjacent plastic nuts 3 are spliced, a gap is reserved between the two adjacent plastic nuts 3 for the plastic nuts 3 to be extruded in during expansion deformation.
As shown in fig. 1 to 7, the difference between the length of the limiting block 101 and the length of the limiting groove 102 is one tenth of the whole length of the plastic nut 3.
As shown in fig. 1-7, a mounting ring 111 is arranged at the center position of the outer side of the plastic nut 3, the outer side of the mounting ring 111 is flush with the outer side of the plastic nut 3, a threaded hole 112 is formed in the mounting ring 111, a bolt 113 is threaded on the metal pipe 4, one end of the bolt 113 penetrates through the metal pipe 4 and is in threaded assembly connection with the threaded hole 112, and when the plastic nut 3 and the metal pipe 4 are installed, one end of the bolt 113 penetrates through the metal pipe 4 and is in threaded rotation connection with the threaded hole 112, so that the installation operation between the plastic nut 3 and the metal pipe 4 is realized.
As shown in fig. 1-7, a limiting ring 121 is arranged on the side wall of one end of the screw rod 2 far away from the plastic nut 3, the outer wall of the limiting ring 121 and the inner wall of the metal tube 4 are slidably arranged, a connector 122 is arranged on the end face of the metal tube 4, the screw rod 2 can ensure the moving stability when sliding in the metal tube 4 through the arranged limiting ring 121, the phenomenon of swinging caused by the longer screw rod 2 can not occur, and the metal tube 4 is convenient to install through the arranged connector 122.
When the push rod device works, one end of the metal pipe 4 far away from the assembly shell 1 is assembled and fixed, the speed reduction driving mechanism is driven to drive the screw rod 2 to rotate, as the plastic nuts 3 are arranged on the inner side of the metal pipe 4 in a linkage way, the plastic nuts 3 and screw rods 2 are in threaded rotation, the screw rods 2 can drive the metal pipe 4 to reciprocate on the screw rods 2 in a linear motion, through arranging the hollow grooves 5 on the outer sides of the plastic nuts 3, the phenomenon that the plastic nuts 3 deform to cause axial expansion is avoided in a low-temperature or high-temperature environment, so that the plastic nuts 3 slide on the screw rods 2 to fail, the condition that the adjusting function of the push rod device fails is caused, and a certain gap is reserved between the adjacent plastic nuts 3 by the arranged plastic nuts 3 in a splicing way, so that extra expansion space is avoided when the plastic nuts 3 deform, and the service life of the plastic nuts 3 is ensured.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a push rod device of fretwork formula plastic nut, includes assembly casing (1), lead screw (2), plastic nut (3) and tubular metal resonator (4), be equipped with speed reduction actuating mechanism in assembly casing (1), the one end rotation of lead screw (2) sets up on assembly casing (1), lead screw (2) are through speed reduction actuating mechanism drive setting, plastic nut (3) screw thread rotation sets up lead screw (2) outside, tubular metal resonator (4) set up in plastic nut (3) outside, a serial communication port, lead screw (2) are through speed reduction actuating mechanism drive rotation, drive plastic nut (3) are in reciprocating rectilinear motion on lead screw (2), the outside of plastic nut (3) is equipped with fretwork groove (5), plastic nut (3) can splice and be equipped with a plurality of;
The plastic nuts (3) are provided with a plurality of hollow grooves (5) which are uniformly distributed in a longitudinal strip shape and are spliced with one another and arranged on the inner side of one end of the metal pipe (4) on the outer side of the plastic nuts (3);
one end of the plastic nut (3) is provided with a limiting block (101), the other end of the plastic nut (3) is provided with a limiting groove (102) which is matched with the limiting block (101) in a clamping mode, and the length of the limiting block (101) is longer than the depth of the limiting groove (102).
2. The push rod device of the window-engraving type plastic nut according to claim 1, wherein the speed reduction driving mechanism comprises a motor (61), a driving gear (62), a driven gear (63) and a speed reduction gear set, the driving gear (62), the speed reduction gear set and the driven gear (63) are all rotatably arranged in the assembly shell (1), one end of the screw rod (2) is in linkage arrangement with the driven gear (63), the driving gear (62) is in linkage arrangement with the driven gear (63) through the speed reduction gear set, and the driving gear (62) is driven through the motor (61).
3. The push rod device of a window-engraved plastic nut according to claim 2, wherein the reduction gear set comprises a first gear (71), a second gear (72) and a third gear (73), the first gear (71) and the driving gear (62) are coaxially arranged in a linkage manner, the second gear (72) and the third gear (73) are coaxially arranged in a linkage manner, the first gear (71) and the second gear (72) are meshed, the third gear (73) and the driven gear (63) are arranged in a linkage manner, and the diameters of the first gear (71), the second gear (72) and the driven gear (63) are sequentially increased.
4. A push rod device of a window-engraving type plastic nut according to claim 3 is characterized in that a fixed pipe (81) is arranged on the assembly shell (1), the inner side of the fixed pipe (81) is assembled and connected with a screw rod (2) through a bearing (82), and the surface of the position where the screw rod (2) is assembled and connected with the bearing (82) is smooth.
5. The push rod device of the window-engraving type plastic nut according to claim 2, wherein a switch contact ring (9) is arranged on the outer side of one end, provided with the plastic nut (3), of the metal tube (4), and a switch for starting the motor (61) is arranged on the switch contact ring (9).
6. The push rod device of a windowed plastic nut according to claim 5, wherein the difference between the length of the limiting block (101) and the length of the limiting groove (102) is one tenth of the whole length of the plastic nut (3).
7. The push rod device of the window-type plastic nut, as set forth in claim 6, characterized in that a mounting ring (111) is disposed at the center of the outer side of the plastic nut (3), the outer side of the mounting ring (111) is flush with the outer side of the plastic nut (3), a threaded hole (112) is disposed on the mounting ring (111), a bolt (113) is threaded on the metal tube (4), and one end of the bolt (113) is threaded through the metal tube (4) and is in threaded fitting connection with the threaded hole (112).
8. The push rod device of the window-engraving type plastic nut as claimed in claim 7, wherein a limiting ring (121) is arranged on the side wall of one end, far away from the plastic nut (3), of the screw rod (2), the outer wall of the limiting ring (121) is slidably arranged on the inner wall of the metal tube (4), and a connector (122) is arranged on the end face of the metal tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310477180.1A CN116255439B (en) | 2023-04-28 | 2023-04-28 | Push rod device of window-engraving type plastic nut |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310477180.1A CN116255439B (en) | 2023-04-28 | 2023-04-28 | Push rod device of window-engraving type plastic nut |
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| CN116255439A CN116255439A (en) | 2023-06-13 |
| CN116255439B true CN116255439B (en) | 2025-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310477180.1A Active CN116255439B (en) | 2023-04-28 | 2023-04-28 | Push rod device of window-engraving type plastic nut |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011147171A1 (en) * | 2010-05-28 | 2011-12-01 | 玉环广鑫机械有限公司 | Electric lift device with lock function |
| DE102011017170A1 (en) * | 2011-04-15 | 2012-10-18 | Timotion Technology Co., Ltd. | Stroke-limiting device of linear actuator, has cable traction mechanism that is installed at telescopic pipe such that retraction or extension of telescopic pipe is stopped when pipe is drawn inwardly or outwardly to final position |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202011000964U1 (en) * | 2011-04-21 | 2012-07-23 | Dewert Antriebs- Und Systemtechnik Gmbh | Electromotive linear drive |
| US9243697B2 (en) * | 2011-12-23 | 2016-01-26 | Pacific Bearing Company | Nut with flexible fingers and radial compression members |
| US9964201B2 (en) * | 2015-05-22 | 2018-05-08 | Lin Engineering, Inc. | Lubrication reservoir for lead screw assembly |
| US20170191553A1 (en) * | 2016-01-06 | 2017-07-06 | Hi-Lex Controls, Inc. | Power strut |
| CN208252696U (en) * | 2018-05-29 | 2018-12-18 | 浙江力耐得传动科技有限公司 | A kind of metallo-plastic integration nut for electric pushrod |
| CN218514178U (en) * | 2021-11-05 | 2023-02-21 | 常州富兴机电有限公司 | Rotor structure with plastic nut matched with hollow shaft |
-
2023
- 2023-04-28 CN CN202310477180.1A patent/CN116255439B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011147171A1 (en) * | 2010-05-28 | 2011-12-01 | 玉环广鑫机械有限公司 | Electric lift device with lock function |
| DE102011017170A1 (en) * | 2011-04-15 | 2012-10-18 | Timotion Technology Co., Ltd. | Stroke-limiting device of linear actuator, has cable traction mechanism that is installed at telescopic pipe such that retraction or extension of telescopic pipe is stopped when pipe is drawn inwardly or outwardly to final position |
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| CN116255439A (en) | 2023-06-13 |
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