CN114810183A - An air duct ring binding device at the joint of an underground air duct - Google Patents

Abstract

The invention provides a wind tube ring bundling device at a joint of an underground wind tube, which effectively solves the problems of low sewing efficiency, poor sewing quality, easy shaking and air leakage of a wind tube ring after sewing, and no special sewing tool which can be carried about; the technical scheme includes that the device comprises a U-shaped plate, an upper roller is arranged in the U-shaped plate, side rollers are arranged on the inner sides of left and right side plates of the U-shaped plate respectively, the upper roller can drive the side rollers to rotate in the same direction, a spiral first steel needle is arranged in the middle of a cavity of the U-shaped plate, a tooth structure is arranged on the outer edge surface of the first steel needle, spiral grooves are formed in the outer circular surfaces of the upper roller and the side rollers respectively, the first steel needle is matched with the spiral grooves simultaneously, and the tooth structure is arranged at the bottom of each spiral groove; the upper roller is provided with a worm gear mechanism, wherein a worm gear and the upper roller are coaxially fixed, two ends of the worm are respectively provided with a large bevel gear, the inner side of the U-shaped plate is rotatably connected with a vertical shaft, the upper end of the vertical shaft is fixedly provided with a small bevel gear, and the lower side of the vertical shaft is provided with a wheel which rolls to drive the vertical shaft to rotate.

Description

An air duct ring binding device at the joint of an underground air duct

technical field

The invention relates to the technical field of coal mine ventilation equipment, in particular to an air duct ring binding device at a joint of an underground air duct.

Background technique

The function of mine ventilation facilities is to control the direction of the underground air flow, so that it flows according to the prescribed route, to ensure the effective air volume of the mining face and other wind sites, to prevent the harmful gas in the goaf and the old road from rushing into the mine air flow, to ensure Mine safety is a major issue related to the safety of miners. In the erection of ventilation facilities, multiple air ducts are often connected. At this time, it is necessary to make joints on site. The main tools and materials include: air duct needles, air duct threads, scissors, and air duct rings. Specifically, according to the site conditions First cut the air duct material along the section, then wrap the air duct on the end of the air duct material, then fold the end of the air duct fabric outwards, and finally use the air duct needle and the air duct thread to connect the air duct. The loop is sewn on the end of the fan tube fabric to complete the seam binding of the fan tube loop.

In the prior art, the stitching work is generally done on a sewing machine, but if it is required in the downhole field, it can only be stitched manually. The disadvantages of both are obvious: first, manual hand stitching, uneven distribution of stitches, and stitching trajectory. It is easy to be skewed and twisted; secondly, artificial stitching, the gap between the stitches and the air duct ring is large, and the air duct ring is shaken at will in the stitched space, which affects the connection quality between the two air ducts and is prone to air leakage; then , On-site manual sewing requires one person to sew, at least another person to assist, low efficiency and poor quality; finally, sewing machine sewing is only suitable for work in specific processing workshops, and sewing machines are inconvenient to carry. In other words, the construction site is not fixed, and there is no small suture tool that is convenient to use and portable in the prior art for its use.

To sum up, the existing air duct ring at the connection of the air duct has low suturing efficiency and poor suturing quality during the downhole suturing process. However, there is no dedicated suture tool that is suitable for carry-on for the installation and erection personnel of the air duct.

SUMMARY OF THE INVENTION

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an air duct ring binding device at the joint of the downhole air duct, which effectively solves the problem of low stitching efficiency, poor stitching quality, and easy shaking of the air duct ring after stitching. It is prone to air leakage, and there is no problem with dedicated and portable suturing tools.

The technical solution is to include a U-shaped plate with an opening downward, an upper roller arranged in the front and rear and rotatable in the U-shaped plate, and a side roller parallel to the upper roller is arranged on the inner side of the left and right side plates of the U-shaped plate. The diameter of the upper roller and the side roller is the same. The upper roller can drive the side roller to rotate in the same direction. There is a spiral first steel needle in the middle part of the U-shaped plate cavity. The bottom is in the shape of an arc, the outer edge surface of the first steel needle has a tooth structure, and the outer surfaces of the upper roller and the side roller are provided with spiral grooves that cooperate with the first steel needle. The two spiral grooves are matched at the same time, and the bottom of the spiral groove is provided with a tooth structure. The tooth structure on the first steel needle cooperates with the tooth structure of the spiral groove. When the upper roller drives the side roller to rotate in the same direction, it can drive the first steel needle to rotate in the same direction. The steel needle rotates in the opposite direction;

The upper roller is provided with a worm gear and worm mechanism, wherein the worm gear and the upper roller are fixed coaxially, the worm is horizontal and can rotate, the left and right ends of the worm are fixed with large bevel gears, and the inner side of the U-shaped plate is rotated and connected with a vertical vertical shaft. The upper end of the vertical shaft is fixed with a small bevel gear that meshes with the large bevel gear, and a wheel is installed on the lower side of the vertical shaft, and the rolling of the wheel drives the vertical shaft to rotate.

Further, sprockets are fixed on the ends of the upper roller and the side rollers, and the sprockets are connected by chains.

Further, a vertical plate corresponding to the worm is fixed on the upper side plate of the U-shaped plate cavity, the worm penetrates the vertical plate, and the worm and the vertical plate are connected by a bearing.

Further, there are vertical vertical plates at the front and rear ends of the upper roller, the central axis of the upper roller is rotatably connected with the vertical plate, and the upper end of the vertical plate is fixed with the U-shaped plate.

Further, there are rectangular blocks on the front and back sides of the side rollers, the rectangular blocks are fixed with the side plates of the U-shaped plate, and the side rollers are rotatably connected to the rectangular blocks; the rectangular blocks are provided with vertical through holes, and the vertical shafts are inserted It is installed in the through hole, and a bearing is installed between the vertical shaft and the through hole.

Further, the lower end of the vertical shaft is provided with a horizontal flat plate, the lower end of the vertical shaft is rotatably connected to the flat plate, the flat plate can rotate around the vertical shaft, the wheel is rotatably connected to the end of the flat plate close to the center of the U-shaped plate, and a driving gear is coaxially fixed on the wheel. , the lower end of the vertical shaft is fixed with a passive gear, and the driving gear meshes with the passive gear; there is a fixed rod on the outside of the flat plate, and there is a double-ended lead screw arranged along the front and rear directions on both sides of the lower end of the U-shaped plate, and both ends of the double-ended lead screw are screwed by threads There is a nut, and the nut and the end of the corresponding fixing rod are hinged together. When the screw is screwed, the screw drives the fixing rod to swing through the nut, so that the long strip drives the wheels to move closer to the middle to clamp or move away from each other.

Further, there is a helical second steel needle inside the first steel needle, the rotation direction of the second steel needle is opposite to that of the first steel needle, and the first steel needle and the second steel needle are in the orthographic projection. There is an annular space between them, and there are a plurality of long gears arranged in the front and rear directions in the annular space. The inner side of the first steel needle and the outer side of the second steel needle are provided with tooth structures that mesh with the long gears. The vertical plate on the front side The lower end is fixed with an arc-shaped plate, the front end of the long gear is rotatably connected to the fixed plate, and when the first steel needle rotates, the long gear drives the second steel needle to rotate in the opposite direction.

Further, the teeth are all in the shape of a wedge.

The invention has an ingenious structure, can firmly sew and bundle the air duct ring with the air duct cloth, can ensure the sewing quality, the stitches are evenly distributed, the sealing of the interface is excellent, and the whole device is exquisite and easy to carry around. Circle use, simple operation, easy to promote.

Description of drawings

FIG. 1 is an overall schematic diagram of the present invention.

FIG. 2 is a front sectional view of the present invention.

Figure 3 is a side sectional view of the present invention (wheels not shown).

4 is a schematic structural diagram of the upper roller, the side roller and the tooth structure in the upper spiral groove of the present invention.

FIG. 5 is a schematic diagram of the structural relationship between the first steel needle and the second steel needle in the present invention.

FIG. 6 is a schematic projection view of the first steel needle, the second steel needle and the long gear in the present invention.

FIG. 7 is a bottom view of the present invention (emphasis on the installation and transmission relationship of the wheels).

Fig. 8 is an effect diagram of stitching when only the first steel needle is present.

FIG. 9 is a top view of the suture effect when the first steel needle and the second steel needle work at the same time.

Fig. 10 is a schematic diagram showing the structural relationship of the middle plate, the long gear and the second steel needle.

Detailed ways

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

As shown in Figures 1 to 10, the present invention includes a U-shaped plate with a downward opening, and the U-shaped plate is provided with an upper roller 2 that is arranged along the front and rear and can be rotated. The diameter of the upper roller 2 and the side roller 3 are the same, the upper roller 2 can drive the side roller 3 to rotate in the same direction, and the middle part of the U-shaped plate cavity has a spiral first steel Needle 4, the orthographic projection of the first steel needle 4 is a superior arc shape with an opening downward, the outer edge surface of the first steel needle 4 has a tooth structure, and the outer surfaces of the upper roller 2 and the side roller 3 are provided with The spiral groove 5 matched with the first steel needle 4, the first steel needle 4 is matched with a plurality of spiral grooves 5 at the same time, the bottom of the spiral groove 5 is provided with a tooth structure, and the tooth structure on the first steel needle 4 is matched with the spiral groove 5. When the upper roller 2 drives the side roller 3 to rotate in the same direction, it can also drive the first steel needle 4 to rotate in the opposite direction;

The upper roller 2 is provided with a worm gear 6 and a worm 7 mechanism, wherein the worm gear 6 is coaxially fixed with the upper roller 2, the worm 7 is horizontal and can rotate, and the left and right ends of the worm 7 are fixed with a large bevel gear 8, U-shaped plate. The inner side is rotatably connected with a vertical vertical shaft 9, the upper end of the vertical shaft 9 is fixed with a small bevel gear 10 meshing with the large bevel gear 8, and a wheel 11 is installed on the lower side of the vertical shaft 9, and the wheel 11 rolls to drive the vertical shaft 9 to rotate.

In order to realize that the upper roller 2 can drive the side roller 3 to rotate in the same direction, the end of the upper roller 2 and the end of the side roller 3 are both fixed with sprockets 12, and the sprockets 12 are connected by chains.

In order to install the worm 7, a vertical plate 13 corresponding to the worm 7 is fixed on the upper side plate of the U-shaped plate cavity, the worm 7 passes through the vertical plate 13, and the worm 7 and the vertical plate 13 are connected by a bearing.

In order to install the upper roller 2, there are vertical vertical plates 14 at the front and rear ends of the upper roller 2, the central axis of the upper roller 2 is rotatably connected with the vertical plate 14, and the upper end of the vertical plate 14 is fixed to the U-shaped plate. Together.

In order to install the side roller 3 and the vertical shaft 9, there are rectangular blocks 15 on the front and rear sides of the side roller 3, the rectangular block 15 is fixed with the side plate of the U-shaped plate, and the side roller 3 is rotatably connected to the rectangular block 15; The block 15 is provided with a vertical through hole, the vertical shaft 9 is inserted into the through hole, and a bearing is installed between the vertical shaft 9 and the through hole.

In order to install the wheel 11, at the same time, the wheel 11 can press the air duct cloth tightly, and also in order for the air duct ring to enter the surrounding track of the first steel needle 4, the lower end of the vertical shaft 9 has a horizontal flat plate 16, and the lower end of the vertical shaft 9 is rotatably connected to On the flat plate 16, the flat plate 16 can rotate around the vertical shaft 9, the wheel 11 is rotatably connected to the end of the flat plate 16 close to the center of the U-shaped plate, the driving gear 17 is coaxially fixed on the wheel 11, and the driven gear 18 is fixed at the lower end of the vertical shaft 9, and the driving gear 18 is fixed on the lower end of the vertical shaft 9. The gear 17 meshes with the driven gear 18; the outer side of the flat plate 16 is provided with a fixed rod 19, and both sides of the lower end of the U-shaped plate have a double-ended lead screw 20 arranged in the front-rear direction, and the two ends of the double-ended lead screw 20 are screwed with nuts 21 through threads , the nut 21 and the end of the corresponding fixing rod 19 are hinged together. When the screw 20 is screwed, the screw 20 drives the fixing rod 19 to swing through the nut 21, so that the long strip drives the wheels 11 to the middle to clamp or move away from each other. .

In order to be able to tie the two threads at the same time (as shown in Figure 9), make sure that the air cylinder ring is firmly bundled and sewed to the end of the air cylinder fabric, the inner side of the first steel needle 4 has a helical second steel needle 22. The rotation direction of the second steel needle 22 is opposite to the rotation direction of the first steel needle 4. In the orthographic projection, there is an annular interval between the first steel needle 4 and the second steel needle 22. In the annular interval, there are many The arranged long gear 23, the inner side of the first steel needle 4 and the outer side of the second steel needle 22 are provided with a tooth structure that meshes with the long gear 23, and the lower end of the vertical plate 14 on the front side is fixed with an arc-shaped plate 24. The front end of the gear 23 is rotatably connected to the fixed plate. When the first steel needle 4 rotates, the long gear 23 drives the second steel needle 22 to rotate in the opposite direction.

In order to reduce the resistance when the first steel needle 4 and the second steel needle 22 pass through the cloth of the air duct, the teeth are all wedge-shaped.

In the above, the orthographic projection of the second steel needle 22 may be an arc shape with an opening downward, or a complete circle, that is, the length of the second steel needle 22 is greater than its own helical lead.

It is worth noting that the cross section of the second steel needle 22 may be circular or rectangular. In order to prevent the second steel needle 22 from shaking in the first steel needle 4, a rectangular cross-section is preferably selected. In order to ensure the transmission of the first steel needle 4, the long gear 23 and the second steel needle 22, the number of the long gears 23 cannot be less than five after calculation, and the orthographic projections of the first steel needle 4 and the second steel needle 22 are both Excellent arc. The needle heads of the first steel needle 4 and the second steel needle 22 are all located at the front end, and the rear ends of the first steel needle 4 and the second steel needle 22 are connected to the air cylinder rope. There are many types of air cylinder ropes, for example, the common one is toughness Powerful fishing line. In order to reduce the trouble of later calculation and manufacture, the leads of the first steel needle 4, the second steel needle 22 and the spiral groove 5 are all set to the same value.

In the initial state, the device is shown in Figure 1 and Figure 7. When using it, cut the air duct fabric as required, place the air duct ring in a suitable position, and fold the length properly. After some series of preparations are completed, prepare at this time. suture. When sewing, first screw the double-ended screw 20, the screw 20 drives the nuts 21 at both ends to move away from each other, the nut 21 drives the plate 16 to rotate through the fixing rod 19, the plate 16 rotates around the lower end of the vertical shaft 9, and the wheels 11 on the left and right sides 11 Gradually widen the distance, and then place the air duct ring sleeved on the end of the air duct fabric into the cavity formed by the first steel needle 4 and the second steel needle 22, as shown in Figure 2, and then reversely rotate the double-ended wire The lever 20 enables the wheels 11 on the left and right sides to clamp the folded flanging of the air duct fabric. At this time, the device is moved forward, the wheels 11 rotate through the driving gear 17 to drive the driven gear 18 to rotate, and the driven gear 18 drives the vertical shaft 9 to rotate. , the vertical shaft 9 rotates through the small bevel gear 10 at its upper end, the small bevel gear 10 drives the worm 7 to rotate through the large bevel gear 8, the worm 7 rotates to drive the worm wheel 6 to rotate, the worm wheel 6 rotates to drive the upper roller 2 to rotate, and the upper roller 2 rotates. The sprocket 12 and the chain drive the side roller 3 to rotate, and the tooth structure at the bottom of the groove on the upper roller 2 and the side roller 3 drives the first steel needle 4 to rotate. It is worth noting here that the spiral groove 5 During the rotation, it also has an axial thrust to the first steel needle 4. In this way, the first steel needle 4 in the rotation is wound, punctured and sewed around the air duct, and finally the first thread on the rear side can be sewed. On the fabric of the air duct, refer to Figure 8 for the specific style; at the same time, the first steel needle 4 drives the second steel needle 22 inside it to rotate in the opposite direction through the plurality of long gears 23, and the second steel needle 22 drives the second thread Sew and fix the air duct material and the air duct ring in it, as shown in Figure 9; after the device rotates around the air duct ring for one or several turns, turn the lead screw 20, so that the device can be removed from the air duct ring smoothly Down.

As a simple and fast suturing device, the present invention has a wide range of uses, and the effect used is even more unexpected. For example, in a coal mine, the inspectors of the ventilation facilities need to sew immediately after finding the damage on the air duct, and then The sutures are glued and sealed with adhesive fabrics, and most of them are sewn up by division of labor, which is inefficient, requires a lot of manual labor, and is prone to soreness next door. Using this device greatly improves the suturing efficiency, and the specific use method is roughly the same as that described in the previous paragraph. As a person skilled in the art, the content described in this paragraph can be clearly understood, and will not be repeated here.

In the present invention, the first steel needle 4 and the second steel needle 22 are driven by the long gear 23, and the rotation directions of the first steel needle 4 and the second steel needle 22 are opposite, so that two threads can be sewed on the air cylinder at the same time. On the interface, it can ensure that the air duct ring cannot be shaken at will.

The whole machine of the invention is small in size, ingenious in structure, can be carried around, can ensure the quality of stitching, can ensure uniform stitching, ensure that the air duct ring is not swaying randomly, make the air duct interface tight and no slack, and is beneficial to improve the joints. Air tightness.

Of course, the second steel needle 22 is only subjected to the turning force of the plurality of long gears 23. For general air duct fabrics, as long as the tip of the second steel needle 22 is sharp enough, the resistance to puncturing is not large, but Once the puncture resistance is high, the second steel needle 22 is likely to be separated from the long gear 23 backwards. To solve this problem, the long gear 23 can be divided into several sections, and an arc-shaped plate is arranged between the two adjacent sections. 24 A middle plate with a similar shape, two adjacent gear segments pass through the middle plate, the outermost diameter of the middle plate is smaller than the diameter of the circle formed by the outermost edges of the plurality of long gears 23, and the minimum diameter of the middle plate is smaller than the plurality of long gears 23 The diameter of the circle formed by the inner edge, that is, the inner edge of the middle plate protrudes inward, and correspondingly, a groove corresponding to the middle plate is provided on the second steel needle 22, and the groove is clamped on the protruding part of the inner edge of the middle plate , thereby limiting the axial freedom of the second steel needle 22 , that is, the second steel needle 22 can only rotate but cannot move axially, and the number of intermediate plates is at least two. As shown in FIG. 10 , it is a schematic diagram showing the structure and positional relationship of the middle plate, the long gear 23 , the second steel needle 22 and the grooves thereon.

The invention has an ingenious structure, can firmly sew and bundle the air duct ring with the air duct cloth, can ensure the sewing quality, the stitches are evenly distributed, the sealing of the interface is excellent, and the whole device is exquisite and easy to carry around. Circle use, simple operation, easy to promote.

Claims (8)

1. A down-hole air duct joint air duct ring bundling device is characterized by comprising a U-shaped plate with a downward opening, an upper roller (2) which is arranged in the U-shaped plate along the front and back and can rotate is arranged in the U-shaped plate, side rollers (3) which are parallel to the upper roller (2) are arranged on the inner sides of the left side plate and the right side plate of the U-shaped plate, the diameters of the upper roller (2) and the side rollers (3) are consistent, the upper roller (2) can drive the side rollers (3) to rotate in the same direction, a spiral first steel needle (4) is arranged in the middle of the cavity of the U-shaped plate, the orthographic projection of the first steel needle (4) is in a major arc shape with the downward opening, a tooth structure is arranged on the outer edge surface of the first steel needle (4), spiral grooves (5) matched with the first steel needle (4) are arranged on the outer circular surfaces of the upper roller (2) and the side rollers (3), the first steel needle (4) is matched with the spiral grooves (5), the tooth structure is arranged at the bottom of the spiral grooves (5), the tooth structure on the first steel needle (4) is matched with the tooth structure of the spiral groove (5), and when the upper roller (2) drives the side roller (3) to rotate in the same direction, the first steel needle (4) can be driven to rotate in the reverse direction;

the upper roller (2) on have worm wheel (6) worm (7) mechanism, wherein worm wheel (6) and upper roller (2) coaxial fixed, worm (7) level and can rotate, both ends all are fixed with big bevel gear (8) about worm (7), U-shaped inboard side rotation is connected with vertical scroll (9), vertical scroll (9) upper end is fixed with little bevel gear (10) with big bevel gear (8) meshing, wheel (11) are installed to vertical scroll (9) downside, wheel (11) roll drive vertical scroll (9) and rotate.

2. The device for bundling the wind cone rings at the joints of the downhole wind cones of claim 1, wherein the end parts of the upper roll (2) and the side roll (3) are both fixed with chain wheels (12), and the chain wheels (12) are connected through chains.

3. The device for bundling the wind cylinder ring at the junction of the downhole wind cylinder according to claim 1, wherein a vertical plate (13) corresponding to the worm (17) is fixed on the upper side plate in the cavity of the U-shaped plate, the worm (17) penetrates through the vertical plate (13), and the worm (17) is connected with the vertical plate (13) through a bearing.

4. The device for bundling the wind cylinder ring at the junction of the downhole wind cylinder according to claim 3, wherein vertical plates (14) are arranged at the front end and the rear end of the upper roller (2), a central shaft of the upper roller (2) is rotatably connected with the vertical plates (14), and the upper ends of the vertical plates (14) are fixed with a U-shaped plate.

5. The device for bundling the wind cylinder ring at the junction of the downhole wind cylinder according to claim 1, wherein the front and rear sides of the side roller (113) are respectively provided with a rectangular block (15), the rectangular blocks (15) are fixed with the U-shaped plate side plate, and the side roller (3) is rotatably connected to the rectangular blocks (15); the rectangular block (15) is provided with a vertical through hole, the vertical shaft (9) is inserted in the through hole, and a bearing is arranged between the vertical shaft (9) and the through hole.

6. The device for bundling the wind cylinder ring at the joint of the downhole wind cylinder according to claim 1, wherein the lower end of the vertical shaft (9) is provided with a horizontal flat plate (16), the lower end of the vertical shaft (9) is rotatably connected to the flat plate (16), the flat plate (16) can rotate around the vertical shaft (9), the wheel (11) is rotatably connected to one end of the flat plate (16) close to the center of the U-shaped plate, a driving gear (17) is coaxially fixed on the wheel (11), a driven gear (18) is fixed at the lower end of the vertical shaft (9), and the driving gear (17) is meshed with the driven gear (18); there is dead lever (19) dull and stereotyped (16) outside, and U-shaped board lower extreme both sides all have one along the double lead screw (20) that the fore-and-aft direction arranged, and the nut (21) has been twisted through the screw in double lead screw (20) both ends, and nut (21) are in the same place rather than the dead lever (19) tip that corresponds is articulated, when twisting lead screw (20), lead screw (20) drive dead lever (19) swing through nut (21) for long slat drives wheel (11) and draws close to the centre and presss from both sides tightly or keep away from each other.

7. The device for bundling the air duct ring at the joint of the underground air duct according to claim 1, wherein a spiral second steel needle (22) is arranged on the inner side of the first steel needle (4), the rotating direction of the second steel needle (22) is opposite to that of the first steel needle (4), an annular space is formed between the first steel needle (4) and the second steel needle (22) in a front projection, a plurality of long gears (23) are arranged in the annular space in the front-back direction, tooth structures meshed with the long gears (23) are arranged on the inner side of the first steel needle (4) and the outer side of the second steel needle (22), an arc-shaped plate (24) is fixed at the lower end of a vertical plate (14) positioned on the front side, the front end of the long gear (23) is rotatably connected to the fixing plate, and the second steel needle (22) is driven to rotate in the reverse direction through the long gear (23) when the first steel needle (4) rotates.

8. The apparatus as claimed in claim 1, wherein the teeth are wedge-shaped.

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