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CN109335448A - A kind of transport of materials device of plain type interior decoration - Google Patents

A kind of transport of materials device of plain type interior decoration Download PDF

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Publication number
CN109335448A
CN109335448A CN201811138988.2A CN201811138988A CN109335448A CN 109335448 A CN109335448 A CN 109335448A CN 201811138988 A CN201811138988 A CN 201811138988A CN 109335448 A CN109335448 A CN 109335448A
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CN
China
Prior art keywords
support
block
sliding block
transport
shape
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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.)
Granted
Application number
CN201811138988.2A
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Chinese (zh)
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CN109335448B (en
Inventor
张娜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hainan Institute of Science and Technology
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Hainan Institute of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hainan Institute of Science and Technology filed Critical Hainan Institute of Science and Technology
Priority to CN201811138988.2A priority Critical patent/CN109335448B/en
Publication of CN109335448A publication Critical patent/CN109335448A/en
Application granted granted Critical
Publication of CN109335448B publication Critical patent/CN109335448B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G7/00Devices for assisting manual moving or tilting heavy loads
    • B65G7/02Devices adapted to be interposed between loads and the ground or floor, e.g. crowbars with means for assisting conveyance of loads

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  • Load-Engaging Elements For Cranes (AREA)
  • Toys (AREA)

Abstract

The invention discloses a kind of transport of materials devices of plain type interior decoration, including crossbeam and support plate, operating process, by opening motor, pass through two engagement of helical gear one and helical gear, to drive screw rod to rotate, since two threaded hole hand of spiral are opposite, to drive two sliding block relative movements back to movement, support plate can be elevated to certain altitude, convenience is provided for finishing people's use process, to grip spill spin block, case can adjust proper angle, convenience is provided for use process, case can store some screws, some small finishing tools such as nail or installation tool, the inventive structure is simple, many can be stored about finishing material, can more preferably be classified different materials storage area, people's fitment process is facilitated to use, whole device supporting & stablizing, it is moved easily, it can store The wide finishing material of range, operating process is time saving and energy saving, flexible operation, and limitation is smaller.

Description

A kind of transport of materials device of plain type interior decoration
Technical field
The present invention relates to a kind of transport of materials device, the transport of materials device of specifically a kind of plain type interior decoration.
Background technique
Finishing material is divided into two large divisions: a part is outdoor material, and a part is indoor material.Indoor material is further divided into Real material, six plate, sheet material, profile, wire rod, wall material types.Real material i.e. former material, are primarily referred to as log and log is made. Common log has China fir, Korean pine, elm, Manchurian ash, and cinnamomum camphora, linden are more expensive to have rosewood, beech, oak etc..? Flitch used is mainly made of China fir in finishing, other timber are mainly used for occasional furniture and carving accessory.
Current material transport device plays simple transportation function, multiple material cannot be supported to place, to influence to fit up material Material uses and assembling process, transports, takes time and effort back and forth, influences finishing progress, and indoor hardware fitting is arbitrarily put, and is easy It is forgetful, and existing transport device limitation is big, cannot once transport the finishing materials such as paint, keel and mounting assembly.
Summary of the invention
The purpose of the present invention is to provide a kind of transport of materials devices of plain type interior decoration, to solve above-mentioned background The problem of being proposed in technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of transport of materials device of plain type interior decoration, including crossbeam and support plate, the top of the support plate If there are two crossbeam disposed in parallel, the lateral wall of crossbeam is fixed by the lower surface of several staggered form supporting beams and support plate It connects, protective net is installed between adjacent vertical bar, the lower surface of support plate is fixedly connected with bearing plate, pressure-bearing by elevating mechanism There are two support mobile mechanism disposed in parallel, crossbeam rotations several groups spill spin block, every group of rotation block number for the installation of plate lower surface Amount is two, and two spill spin block lateral walls are fixedly connected with oscillating rod, is equipped with case between two oscillating rod other ends, horizontal Beam is located at side wall installation between two spill spin blocks, and there are two symmetrically arranged clamping apparatus.
As a further solution of the present invention: the support mobile mechanism by L shape support rod, hydraulic cylinder, cross sliding block, Rectangular block, anti-skidding feet, universal wheel and bottom plate composition, the lower surface of bearing plate is supported to be fixedly connected there are two branch disposed in parallel Rectangular block is supportted, the lower surface of rectangular block is supported to be fixedly connected with bottom plate, the lower surface of bottom plate is equipped with several universal wheels, support Be equipped with groove inside rectangular block upper end lateral surface, be equipped with cross bath inside support rectangular block line segment lateral surface, cross bath with Groove connection, the internal slide of cross bath are connected with cross sliding block, and the face that is embedded in of groove is equipped with hydraulic cylinder, hydraulic cylinder Output end is fixedly connected with cross sliding block, and four end face of cross sliding block has been respectively fixedly connected with L shape support rod, L shape support rod Vertical end face is equipped with anti-skidding feet.
As a further solution of the present invention: the elevating mechanism is by screw rod, sliding block, pin shaft, staggered form elevating lever, helical teeth Wheel one, helical gear two and motor unit are at bearing plate front side wall and rear wall are distributed with sliding slot, set that there are two right inside sliding slot Claim the sliding block of setting, the lower surface of bearing plate is equipped with motor, and the interior side wall of one of sliding slot is rotatably connected to silk Bar, the inside of sliding block are equipped with the threaded hole to match with screw rod, and two threaded holes are contrary, and screw rod has been collected together by entad Helical gear one, motor output end runs through the lower surface of bearing plate and is connected with the helical gear two that is meshed with helical gear one, sliding Block is connect by staggered form elevating lever with support plate side wall, and staggered form elevating lever adjacent both ends are turned by pin shaft and support plate side wall Dynamic connection, the another both ends of staggered form elevating lever are rotatablely connected by pin shaft and sliding block.
As a further solution of the present invention: the clamping apparatus is made of spring and T shape kelly, and crossbeam is revolved close to two Switch block position is set there are two symmetrically arranged empty slot, and the internal slide of empty slot is connected with T shape kelly, and T shape kelly one side wall passes through Spring is fixedly connected with empty slot interior side wall, and two spill spin block adjacent sides are equipped with the card slot of several uniform amounts setting, T Shape kelly one end is inserted in the inside of card slot.
As a further solution of the present invention: the T shape kelly lateral wall is equipped with anti-skid chequer, and one end of T shape kelly extends On the lateral wall of crossbeam, a number of card slot is arranged in a ring.
As a further solution of the present invention: the fixed company of vertical bar that the lower surface of the support plate passes through four rectangle settings It is connected to suspension plate.
As a further solution of the present invention: a lateral surface of the rectangular block is equipped with hydraulic system case, and hydraulic cylinder is logical Cross the control of hydraulic system case.
Compared with prior art, the beneficial effects of the present invention are:
The inventive structure is simple, can store many about finishing material, and can more preferably classify different materials storage area, People's fitment process is facilitated to use, whole device supporting & stablizing is moved easily, can store the wide finishing material of range, operate Journey is time saving and energy saving, flexible operation, and limitation is smaller.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the transport of materials device of plain type interior decoration.
Fig. 2 is the structural schematic diagram in the transport of materials device of plain type interior decoration.
Fig. 3 is the backsight structural representation of backboard in the transport of materials device of plain type interior decoration.
Fig. 4 is the backsight structural representation of backboard in the transport of materials device of plain type interior decoration.
In figure: 1 crossbeam, 2 support plates, 3 telescopic rods, 4 bearing plates, 5 support mobile mechanisms, 6 elevating mechanisms, 7 suspension plates, 8 Vertical bar, 9 protective nets, 10 clamping apparatus, 11 spill spin blocks, 12 oscillating rods, 13 cases, 14 staggered form supporting beams, the support of 51L shape Bar, 52 grooves, 53 cross baths, 54 hydraulic cylinders, 55 cross sliding blocks, 56 support rectangular blocks, 57 anti-skidding feets, 58 universal wheels, 59 bottom plates, 61 sliding slots, 62 screw rods, 63 sliding blocks, 64 pin shafts, 65 staggered form elevating levers, 66 helical gears one, 67 helical gear, two, 68 electricity Motivation, 101 empty slots, 102 springs, 103T shape kelly, 104 card slots.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~4, in the embodiment of the present invention, a kind of transport of materials device of plain type interior decoration, including cross Beam 1 and support plate 2, the top of the support plate 2 are set there are two crossbeam 1 disposed in parallel, and the lateral wall of crossbeam 1 passes through several Staggered form supporting beam 14 is fixedly connected with the lower surface of support plate 2, and protective net 9 is equipped between adjacent vertical bar 8, support plate 2 Lower surface is fixedly connected with bearing plate 4 by elevating mechanism 6, and the installation of 4 lower surface of bearing plate is shifted there are two branch disposed in parallel Motivation structure 5, the rotation of crossbeam 1 have several groups spill spin block 11, and every group of 11 quantity of spill spin block is two, and two 11 lateral walls of spill spin block are solid Surely be connected with oscillating rod 12, case 13 be installed between two 12 other ends of oscillating rod, crossbeam 1 be located at two spill spin blocks 11 it Between side wall installation there are two symmetrically arranged clamping apparatus 10;
Support mobile mechanism 5 by L shape support rod 51, hydraulic cylinder 54, cross sliding block 55, support rectangular block 56, non-slip mat Foot 57, universal wheel 58 and bottom plate 59 form, and the lower surface of bearing plate 4 is fixedly connected with that there are two support rectangular blocks disposed in parallel 56, the lower surface of support rectangular block 56 is fixedly connected with bottom plate 59, and the lower surface of bottom plate 59 is equipped with several universal wheels 58, branch It supports and is equipped with groove 52 inside 56 upper end lateral surface of rectangular block, be equipped with cross bath 53 inside 56 line segment lateral surface of support rectangular block, Cross bath 53 is connected to groove 52, and the internal slide of cross bath 53 is connected with cross sliding block 55, and groove 52 is embedded in Face is equipped with hydraulic cylinder 54, and 54 output end of hydraulic cylinder is fixedly connected with cross sliding block 55,55 4 end face of cross sliding block difference It is fixedly connected with L shape support rod 51,51 vertical end face of L shape support rod is equipped with anti-skidding feet 57;
The elevating mechanism 6 is by screw rod 62, sliding block 63, pin shaft 64, staggered form elevating lever 65, helical gear 1, helical gear 2 67 and motor 68 form, 4 front side wall of bearing plate and rear wall be distributed with sliding slot 61, sets that there are two symmetrical inside sliding slot 61 The sliding block 63 of setting, the lower surface of bearing plate 4 are equipped with motor 68, the interior side wall rotation connection of one of sliding slot 61 There is screw rod 62, the inside of sliding block 63 is equipped with the threaded hole to match with screw rod 62, and two threaded holes are contrary, and screw rod 62 is close Helical gear 1 has been collected together in center, and 68 output end of motor runs through the lower surface of bearing plate 4 and is connected with and helical gear one 66 are meshed helical gear 2 67, and sliding block 63 is connect by staggered form elevating lever 65 with 2 side wall of support plate, 65 phase of staggered form elevating lever Adjacent both ends are rotatablely connected by pin shaft and 2 side wall of support plate, and the another both ends of staggered form elevating lever 65 are rotated by pin shaft and sliding block 63 Connection;
The clamping apparatus 10 is made of spring 102 and T shape kelly 103, and crossbeam 1 is equipped with close to two 11 positions of spill spin block Two symmetrically arranged empty slots 101, the internal slide of empty slot 101 are connected with T shape kelly 103, and 103 one side wall of T shape kelly passes through Spring 102 is fixedly connected with 101 interior side wall of empty slot, and two 11 adjacent sides of spill spin block are arranged equipped with several uniform amounts Card slot 104,103 one end of T shape kelly is inserted in the inside of card slot 104;
103 lateral wall of T shape kelly is equipped with anti-skid chequer, and one end of T shape kelly 103 extends on the lateral wall of crossbeam 1, A number of card slot 104 is arranged in a ring;
The lower surface of the support plate 2 is fixedly connected with suspension plate 7 by the vertical bar 8 that four rectangles are arranged;
One lateral surface of the support rectangular block 56 is equipped with hydraulic system case, and hydraulic cylinder 54 passes through the control of hydraulic system case System.
The working principle of the invention is: operating process, by opening motor 68, passes through helical gear 1 and helical gear two 67 engagements, to drive screw rod 62 to rotate, due to two threaded hole hand of spiral on the contrary, to drive two 63 phases of sliding block Support plate 2 can be elevated to certain altitude back to movement to mobile, convenience be provided for finishing people's use process, by opening Hydraulic cylinder 54 is opened, hydraulic cylinder 54 drives cross sliding block 55 to slide downward or upward in the inside of cross bath 53, and cross is sliding 55 slide downward of block, support whole device move up, and anti-skidding feet 57 removes ground with ground face contact, universal wheel 58, thus It supports whole device to stablize to place, cross sliding block 55 moves up, and anti-skidding feet 57 removes ground, and universal wheel 58 connects with ground Touching, to be moved easily whole device, need to keel bracket to be mounted be placed on 7 upper surface of suspension plate, paint kettle is placed In the upper surface of bearing plate 4, two T shape kellies 103 are squeezed, so that 103 one end of T shape kelly removes card slot on spill spin block 11, from And entire 13 swing angle of case can be adjusted, proper angle is adjusted, T shape kelly 103 is unclamped, by 102 bounce of spring It acts on, inside the mobile next card slot 104 of T shape kelly 103, to grip spill spin block 11, case 13 can adjust conjunction Suitable angle, provides convenience for use process, case 13 can store some small dresses such as some screws, nail or installation tool Tool is repaired, the inventive structure is simple, can store many about finishing material, and can more preferably classify different materials storage area, People's fitment process is facilitated to use, whole device supporting & stablizing is moved easily, can store the wide finishing material of range, operate Journey is time saving and energy saving, flexible operation, and limitation is smaller.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (7)

1. a kind of transport of materials device of plain type interior decoration, including crossbeam (1) and support plate (2), 3 telescopic rods, 4 pressure-bearings Plate, 5 support mobile mechanisms, 6 elevating mechanisms, 7 suspension plates, 8 vertical bars, 9 protective nets, 10 clamping mechanisms, 11 spill spin blocks, 12 are swung Bar, 13 cases, 14 staggered form supporting beams, 51L shape support rod, 52 grooves, 53 cross baths, 54 hydraulic cylinders, 55 cross are sliding Block, 56 support rectangular blocks, 57 anti-skidding feets, 58 universal wheels, 59 bottom plates, 61 sliding slots, 62 screw rods, 63 sliding blocks, 64 pin shafts, 65 intersect Formula elevating lever, 66 helical gears one, 67 helical gears two, 68 motor, 101 empty slots, 102 springs, 103T shape kelly, card slot 104, It is characterized in that, is set above the support plate (2) there are two crossbeam disposed in parallel (1), the lateral wall of crossbeam (1) passes through several A staggered form supporting beam (14) is fixedly connected with the lower surface of support plate (2), is equipped with protective net (9) between adjacent vertical bar (8), The lower surface of support plate (2) is fixedly connected with bearing plate (4) by elevating mechanism (6), and there are two the installations of bearing plate (4) lower surface Support mobile mechanism (5) disposed in parallel, crossbeam (1) rotation have several groups spill spin block (11), and every group of spill spin block (11) quantity is Two, two spill spin block (11) lateral walls are fixedly connected with oscillating rod (12), are equipped between two oscillating rod (12) other ends Case (13), crossbeam (1) is located at side wall installation between two spill spin blocks (11), and there are two symmetrically arranged clamping apparatus (10).
2. the transport of materials device of plain type interior decoration according to claim 1, which is characterized in that the branch shifts Motivation structure (5) is by L shape support rod (51), hydraulic cylinder (54), cross sliding block (55), support rectangular block (56), anti-skidding feet (57), universal wheel (58) and bottom plate (59) composition, the lower surface of bearing plate (4) are fixedly connected there are two support square disposed in parallel The lower surface of shape block (56), support rectangular block (56) is fixedly connected with bottom plate (59), and the lower surface of bottom plate (59) is equipped with several A universal wheel (58), support rectangular block (56) upper end lateral surface inside is equipped with groove (52), on the outside of support rectangular block (56) line segment Cross bath (53) are equipped with inside face, cross bath (53) is connected to groove (52), the internal slide connection of cross bath (53) Have cross sliding block (55), the face that is embedded in of groove (52) is equipped with hydraulic cylinder (54), hydraulic cylinder (54) output end and cross Sliding block (55) is fixedly connected, and (55) four end face of cross sliding block has been respectively fixedly connected with L shape support rod (51), L shape support rod (51) vertical end face is equipped with anti-skidding feet (57).
3. the transport of materials device of plain type interior decoration according to claim 1, which is characterized in that the elevator Structure (6) is by screw rod (62), sliding block (63), pin shaft (64), staggered form elevating lever (65), helical gear one (66), helical gear two (67) Formed with motor (68), bearing plate (4) front side wall and rear wall be distributed with sliding slot (61), set inside sliding slot (61) there are two Symmetrically arranged sliding block (63), the lower surface of bearing plate (4) are equipped with motor (68), the inside one of one of sliding slot (61) Side wall is rotatably connected to screw rod (62), and the inside of sliding block (63) is equipped with the threaded hole to match with screw rod (62), two threaded holes Contrary, screw rod (62) has collected together helical gear one (66) by entad, and motor (68) output end is through bearing plate (4) Lower surface and it is connected with the helical gear two (67) that is meshed with helical gear one (66), sliding block (63) passes through staggered form elevating lever (65) It being connect with support plate (2) side wall, staggered form elevating lever (65) adjacent both ends are rotatablely connected by pin shaft and support plate (2) side wall, The another both ends of staggered form elevating lever (65) are rotatablely connected by pin shaft and sliding block (63).
4. the transport of materials device of plain type interior decoration according to claim 1, which is characterized in that the clamping dress It sets (10) to be made of spring (102) and T shape kelly (103), crossbeam (1) sets that there are two symmetrical close to two spill spin block (11) positions The empty slot (101) of setting, the internal slide of empty slot (101) are connected with T shape kelly (103), and T shape kelly (103) one side wall passes through Spring (102) is fixedly connected with empty slot (101) interior side wall, and it is equal that two spill spin block (11) adjacent sides are equipped with several quantity The card slot (104) of even setting, T shape kelly (103) one end are inserted in the inside of card slot (104).
5. the transport of materials device of plain type interior decoration according to claim 4, which is characterized in that the T shape card Bar (103) lateral wall is equipped with anti-skid chequer, and one end of T shape kelly (103) extends on the lateral wall of crossbeam (1), a number of Card slot (104) is arranged in a ring.
6. the transport of materials device of plain type interior decoration according to claim 1, which is characterized in that the support plate (2) lower surface is fixedly connected with suspension plate (7) by the vertical bar (8) that four rectangles are arranged.
7. the transport of materials device of plain type interior decoration according to claim 2, which is characterized in that the support square One lateral surface of shape block (56) is equipped with hydraulic system case, and hydraulic cylinder (54) is controlled by hydraulic system case.
CN201811138988.2A 2018-09-28 2018-09-28 Material conveyer that plain type interior decoration used Expired - Fee Related CN109335448B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811138988.2A CN109335448B (en) 2018-09-28 2018-09-28 Material conveyer that plain type interior decoration used

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811138988.2A CN109335448B (en) 2018-09-28 2018-09-28 Material conveyer that plain type interior decoration used

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CN109335448A true CN109335448A (en) 2019-02-15
CN109335448B CN109335448B (en) 2020-10-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109817054A (en) * 2019-03-30 2019-05-28 湖北理工学院 A comprehensive training device for installation and maintenance of electrical automation instruments
CN114635367A (en) * 2020-09-10 2022-06-17 青岛同创旷远企业发展有限公司 Road and bridge construction method

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Publication number Priority date Publication date Assignee Title
KR100619876B1 (en) * 2005-08-04 2006-09-06 (주)태진이엔지 Electric lifting platform
CN201330137Y (en) * 2009-01-06 2009-10-21 李健 Double-screw lifting platform
CN205472433U (en) * 2016-01-26 2016-08-17 买买提艾力·肉孜 Lifting device for overhauling
CN206183572U (en) * 2016-08-15 2017-05-24 李智 Medically prevent vomiting inspection bed body with oxygen uptake function
US9790069B2 (en) * 2014-06-23 2017-10-17 The Boeing Company Collision avoidance system for scissor lift
CN207313026U (en) * 2017-11-01 2018-05-04 郭嘉川 A kind of civil engineering lifting gear
CN108017009A (en) * 2017-12-29 2018-05-11 石狮市酷瑞电气有限责任公司 A kind of high voltage converter easy to remove
CN108117016A (en) * 2017-12-19 2018-06-05 石卫阳 A kind of lifting gear for facilitating decorations

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100619876B1 (en) * 2005-08-04 2006-09-06 (주)태진이엔지 Electric lifting platform
CN201330137Y (en) * 2009-01-06 2009-10-21 李健 Double-screw lifting platform
US9790069B2 (en) * 2014-06-23 2017-10-17 The Boeing Company Collision avoidance system for scissor lift
CN205472433U (en) * 2016-01-26 2016-08-17 买买提艾力·肉孜 Lifting device for overhauling
CN206183572U (en) * 2016-08-15 2017-05-24 李智 Medically prevent vomiting inspection bed body with oxygen uptake function
CN207313026U (en) * 2017-11-01 2018-05-04 郭嘉川 A kind of civil engineering lifting gear
CN108117016A (en) * 2017-12-19 2018-06-05 石卫阳 A kind of lifting gear for facilitating decorations
CN108017009A (en) * 2017-12-29 2018-05-11 石狮市酷瑞电气有限责任公司 A kind of high voltage converter easy to remove

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109817054A (en) * 2019-03-30 2019-05-28 湖北理工学院 A comprehensive training device for installation and maintenance of electrical automation instruments
CN109817054B (en) * 2019-03-30 2021-06-04 湖北理工学院 A comprehensive training device for installation and maintenance of electrical automation instruments
CN114635367A (en) * 2020-09-10 2022-06-17 青岛同创旷远企业发展有限公司 Road and bridge construction method

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