An auxiliary assembly system for new energy vehicle air conditioning housing

Abstract

The present invention discloses an auxiliary assembly system for air-conditioning housings of new energy vehicles, and belongs to the technical field of air-conditioning housing assembly. It includes a feeding mechanism, which includes symmetrically arranged columns, and mounting plates are provided on the inner side surfaces of the upper ends of the two columns, and one end of the mounting plate is rotatably connected to the end of the column. A support rod is provided on the column, and the support rod is used to maintain the tilt state of the mounting plate. Belt rollers are provided between the ends of the two mounting plates, and the two ends of the belt rollers are respectively rotatably connected to the ends of the mounting plates. A conveyor belt is wound around the two belt rollers, and a plurality of fixed blocks are provided on the circumference of the outer surface of the conveyor belt, and the fixed blocks are fixed on the conveyor belt. This technical solution is used to solve the problem that the feeding mechanism in the prior art cannot control the placement posture of the parts during feeding, resulting in poor grasping effect of the grasping mechanism.

Description

Technical Field

[0001] The present invention belongs to the technical field of air-conditioning housing assembly, and in particular relates to an auxiliary assembly system for an air-conditioning housing of a new energy vehicle. Background Art

[0002] When assembling air conditioner casings, one of the steps is to sort the injection-molded multi-cavity parts. The purpose of sorting is to package different specifications separately and then transfer them to the appropriate assembly line.

[0003] For example, an automatic sorting machine with patent number CN202322203095.4 comprises: a sorting machine body, on which a first transmission line and a second transmission line are installed from top to bottom, respectively, the left end of the second transmission line is longer than the left end of the first transmission line, and a return material component is fixed to the right end of the second transmission line; a grasping mechanism, which adopts a flexible robot with a visual recognition system; a feeding mechanism, which is a feeding transmission line, which is connected to the first transmission line, and its purpose is to quickly sort and package multi-cavity parts.

[0004] The feeding mechanism in the automatic sorting machine in the above patent technology mainly conveys multi-cavity parts by means of a feeding conveyor line and a clamping plate. In actual use, it has the following problems: the multi-cavity parts conveyed to the first conveyor line by means of a feeding conveyor line and a clamping plate have a random cavity surface in contact with the first conveyor line, and the flexible airbag gripping mechanism used in the gripping mechanism needs to enter a cavity of the multi-cavity part, and then control the air pressure in the airbag to perform the gripping and putting down operations;

[0005] However, the depth of each cavity of a multi-cavity part is different. If a cavity with a shallower depth is at the top, if the grasping mechanism grasps it, the grasping effect of the grasping mechanism will be worse, and it is very easy for the part to fall during the grasping process. If the grasping mechanism does not grasp the part in this placement state under the action of the visual control system, and makes it flow back for re-loading, it will easily lead to a long working gap of the grasping mechanism, resulting in reduced work efficiency. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide an auxiliary assembly system for the air-conditioning housing of new energy vehicles, so as to solve the problem that the feeding mechanism in the prior art cannot control the placement posture of the parts during feeding, resulting in poor grasping effect of the grasping mechanism.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention discloses an auxiliary assembly system for a housing of an air conditioner of a new energy vehicle, comprising a feeding mechanism, wherein the feeding mechanism comprises symmetrically arranged columns, wherein a mounting plate is provided on the inner side surfaces of the upper ends of the two columns, wherein one end of the mounting plate is rotatably connected to the end of the column, wherein a support rod is provided on the column, wherein the support rod is used to maintain the inclined state of the mounting plate, wherein a belt roller is provided between the ends of the two mounting plates, wherein the two ends of the belt roller are rotatably connected to the ends of the mounting plate respectively, wherein a conveying belt is wound around the two belt rollers, wherein a plurality of fixing blocks are provided on the circumference of the outer surface of the conveying belt, wherein the fixing block is fixed to the conveying belt, and wherein the two ends of the fixing block face the conveying belt. The conveyor belt is arranged in the width direction, and the fixed block is provided with a plurality of supporting rods evenly distributed along the length direction thereof, one end of the supporting rod is detachably connected to the fixed block, and the supporting rod is arranged perpendicular to the fixed block, and a connecting plate is arranged on the lower outer surface of the two mounting plates, the connecting plate is arranged parallel to the supporting rod, one end of the connecting plate is detachably connected to the mounting plate, and a telescopic element is arranged on the other end of the connecting plate, and a hanging plate is arranged on the output end of the two telescopic elements, and the two ends of the hanging plate are respectively fixed on the output ends of the two telescopic elements, and the hanging plate is used to pull the parts on the supporting rod that are not in the correct position and drop them into the material box.

[0009] Furthermore, an arc groove is provided in the length direction of the fixed block, a rotating rod is provided in the arc groove, the outer side surface of the rotating rod is frictionally connected to the inner side surface of the arc groove, and one end of the supporting rod is detachably connected to the rotating rod.

[0010] Furthermore, a nut through-groove is provided inside the rotating rod, a screw is provided in the nut through-groove, nuts matching the number of supporting rods are provided on the screw, the nuts are threadedly connected to the screw, and when the screw rotates, the movement directions of adjacent nuts on the screw are opposite, the outer side surface of the nut is in sliding contact with the inner side surface of the nut through-groove, a sliding notch connected to the nut through-groove is provided on the outer side surface of the rotating rod, one end of several of the supporting rods is located in the sliding notch, and are respectively connected to the surfaces of several of the nuts.

[0011] Furthermore, a rotating sleeve is provided on one end of the screw, and the rotating sleeve is sleeved on the screw, and a limit block matching the width of the sliding notch is provided on the outer surface of the sleeve, and one end of the limit block is fixed on the rotating sleeve, and a plurality of first stops evenly distributed around the circumference are provided on the inner side surface of one end of the rotating rod sleeve facing the end of the screw, and a plurality of second stops evenly distributed around the circumference are provided on the outer side surface of the end of the screw, and a sum of heights of the first and second stops is greater than a difference in radius between the rotating sleeve and the screw, and a distance from one end of the sliding notch facing the rotating sleeve to one end of the second stop facing the sliding notch is greater than the sum of the lengths of the rotating sleeve and the limit block.

[0012] Furthermore, an end block is provided on one end of the screw rod on which the rotating sleeve is arranged, and the diameter of the end block is larger than the diameter of the rotating sleeve.

[0013] Furthermore, a sliding block is provided on the column, the sliding block is sleeved on the column, a plurality of limit pins are provided on the sliding block, a plurality of evenly distributed limit holes are provided in the length direction of the column, the limit pins pass through the sliding block and are located in the limit holes, and one end of the support rod is fixedly connected to the sliding block.

[0014] Furthermore, a spring is provided between the supporting rod and the nut, and the spring is fixedly connected to the end of the supporting rod and the surface of the nut respectively.

[0015] Furthermore, a plurality of threaded holes are provided in the length direction of the mounting plate, a through hole is provided on the end of the connecting plate, and the connecting plate is fixed to the mounting plate by bolts.

[0016] The beneficial effects of the present invention are:

[0017] The loading mechanism in the present technical solution can screen the placement positions of the parts when conveying the parts, screen out the parts that do not conform to the preset placement positions, and continue to convey the parts whose placement positions conform to the preset positions upwards, that is, the parts conveyed to the subsequent flexible grasping and packaging mechanism of the present system are all in the best placement posture that conforms to the grasping of the flexible grasping mechanism, which improves the grasping effect of the flexible grasping mechanism and thereby improves the working efficiency of the present system.

[0018] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0020] Figure 1 It is a schematic plan view of the overall auxiliary assembly system of the present invention;

[0021] Figure 2 It is a three-dimensional schematic diagram of a feeding mechanism in the auxiliary assembly system of the present invention;

[0022] Figure 3 It is a schematic front view of a feeding mechanism in the auxiliary assembly system of the present invention;

[0023] Figure 4 It is a three-dimensional schematic diagram of the feeding mechanism transporting parts in the auxiliary assembly system of the present invention;

[0024] Figure 5 It is a schematic diagram of the arrangement of components such as a screw rod, a rotating rod and a rotating sleeve in the auxiliary assembly system of the present invention;

[0025] Figure 6 For the present invention Figure 5 A local enlarged schematic diagram of point D in the middle.

[0026] The following are marked in the accompanying drawings:

[0027] A. Flexible grabbing and packaging mechanism; B. Material box; C. Loading mechanism; 1. Column; 2. Mounting plate; 3. Belt roller; 4. Conveyor belt; 5. Fixed block; 6. Support rod; 7. Rotating rod; 8. Spring; 9. Nut; 10. Screw; 11. Rotating sleeve; 12. Limit block; 13. First stop block; 14. Second stop block; 15. End stop block; 16. Connecting plate; 17. Telescopic element; 18. Hanging plate; 19. Sliding block; 20. Support rod; 21. Receiving plate; 22. Parts. DETAILED DESCRIPTION

[0028] like Figures 1 to 6 As shown, the present invention is an auxiliary assembly system for the air-conditioning housing of a new energy vehicle. It should be noted that the auxiliary assembly system includes a material box B, a flexible grabbing and packaging mechanism A and a feeding mechanism C. The feeding mechanism C transfers the parts 22 from the material box B to the receiving plate 21 at the entrance of the flexible grabbing and packaging mechanism A, and then transmits them to realize the grabbing and packaging operations of the parts 22.

[0029] The specific feeding mechanism C includes symmetrically arranged columns 1, and a fixed seat is provided on one end of the column 1 that contacts the ground for connecting with the ground. A mounting plate 2 is provided on the inner side surface of the upper end of the two columns 1, and one end of the mounting plate 2 is rotatably connected to the end of the column 1, and can be rotatably connected through a rotating shaft. A support rod 20 is provided on the column 1, and one end of the support rod 20 is connected to the column 1, and the other end of the support rod 20 is in contact with and supported by the mounting plate 2 to maintain the inclined state of the mounting plate 2. A belt roller 3 is provided between the ends of the two mounting plates 2, and the two ends of the belt roller 3 are respectively rotatably connected to the ends of the mounting plate 2. A conveying belt 4 is wound around the two belt rollers 3, and a plurality of fixing blocks 5 are provided on the circumference of the outer surface of the conveying belt 4, and one side of the fixing block 5 is fixed to the conveying belt 4, and the two ends of the fixing block 5 face the conveying belt 4. The belt 4 is arranged in the width direction. Preferably, the length of the fixed block 5 matches the length of the conveyor belt 4. A plurality of supporting rods 6 are arranged evenly distributed along the length direction on the fixed block 5. One end of the supporting rod 6 is detachably connected to the fixed block 5, and the supporting rod 6 is arranged perpendicular to the fixed block 5. A connecting plate 16 is provided on the lower outer surface of the two mounting plates 2. The connecting plate 16 is arranged parallel to the supporting rod 6. One end of the connecting plate 16 is detachably connected to the mounting plate 2. A telescopic element 17 is provided on the other end of the connecting plate 16. The telescopic element 17 is preferably a telescopic cylinder. A hanging plate 18 is provided on the output end of the two telescopic elements 17. The two ends of the hanging plate 18 are respectively fixed to the output ends of the two telescopic elements 17. The hanging plate 18 is used to pull the parts 22 that are not in the correct position on the supporting rod 6 and drop them into the material box B.

[0030] The working principle of the above technical solution is:

[0031] like Figure 4As shown, the technical solution is directed to a multi-cavity part 22, such as a part 22 composed of two parts, the shape of the part 22 is a hollow cylinder connected at two ends, the height, radius and radius of the hollow part of the two cylinders are all different, and the part 22 is a plastic part, that is, it is light in weight. Therefore, when the support rod 6 moves upward from the inside of the material box B, the part 22 will be lifted up by the support rod 6 and move upward. During the upward movement, when the support rod 6 moves to a specified position below the hanging plate 18, the position can be determined according to the height of the larger part of the part 22, and only the upper surface of the support rod 6 and the hanging plate 18 need to be moved upward. The distance between them can be greater than the height, that is, under the action of the telescopic element 17, the hanging plate 18 moves outward, and will pull the parts 22 placed at a higher height on the supporting rod 6 outward, that is, pull out the supporting rod 6 and drop it into the material box B. In this process, only the parts 22 that are placed in the correct position will not be discharged, that is, the correct position of the parts 22 should be that the larger end will be hung on the supporting rod 6, so its height above the supporting rod 6 is less than the distance between it and the supporting rod 6 when the hanging plate 18 acts, so the hanging plate 18 will not act on the correctly placed parts, that is, the correctly placed parts can continue to be transported upward.

[0032] The advantages of the above technical solution are:

[0033] By means of the feeding mechanism C arranged in this way, the placement positions of the parts 22 can be screened, and the parts 22 that do not meet the placement positions can be screened out, while the parts 22 that meet the placement positions can continue to be conveyed upwards, that is, the parts 22 conveyed to the flexible grasping and packaging mechanism A are all in the best placement posture that meets the requirements of the flexible grasping mechanism for grasping, which improves the grasping effect of the flexible grasping mechanism and thereby improves the working efficiency of the system.

[0034] In one feasible method, an arc groove is provided in the length direction of the fixed block 5, and a rotating rod 7 is provided in the arc groove. The outer side surface of the rotating rod 7 is frictionally connected to the inner side surface of the arc groove. Friction connection is a mechanical connection method, which relies on the friction between two contact surfaces to transmit force or torque. This connection method is widely used in various mechanical and engineering fields, and will not be elaborated on here. Of course, in this technical solution, the friction between the friction connection components does not need to be too large, because the part 22 itself is light in weight, and one end of the support rod 6 is detachably connected to the rotating rod 7.

[0035] That is, when the friction force is overcome and the rotating rod 7 is rotated, the rotating rod 7 will drive the supporting rod 6 to rotate, thereby changing the inclination angle between the supporting rod 6 and the conveying belt 4. The center distribution of the parts on the supporting rod 6 can be changed according to the different shapes or uneven gravity distribution of the parts to ensure the stability of upward transportation. At the same time, by changing the inclination angle, the contact angle between the supporting rod 6 and the part 22 can also be adjusted to improve the supporting effect.

[0036] In one feasible manner, a nut 9 through-groove is provided inside the rotating rod 7, a screw 10 is provided in the nut 9 through-groove, and nuts 9 matching the number of supporting rods 6 are provided on the screw 10. The nuts 9 are threadedly connected to the screw 10, and when the screw 10 rotates, the movement directions of adjacent nuts 9 on the screw 10 are opposite, and the outer side surfaces of the nuts 9 are in sliding contact with the inner side surfaces of the nut 9 through-groove, but the nuts 9 cannot rotate. A sliding notch connected to the nut 9 through-groove is provided on the outer side surface of the rotating rod 7, and one end of several supporting rods 6 is located in the sliding notch and is respectively connected to the surfaces of several nuts 9.

[0037] It is not difficult to understand that, during the specific operation, two adjacent nuts 9 should be regarded as a group, and a certain installation avoidance distance should be left between each group, because when lifting, only two supporting rods 6 are needed to achieve it, so it is only necessary to change the distance between the two adjacent supporting rods 6. Specifically, by rotating the screw 10, the position of the nut 9 on the screw 10 can be driven, and then the distance between the adjacent supporting rods 6 can be changed, which can be suitable for lifting and conveying parts 22 of different diameters or sizes, thereby improving the practicality of the feeding mechanism C. It should be noted that the thread on the screw 10 can be multiple sections, and the rotation direction of each section of the thread can be determined according to the required motion state of the nut 9. This is a prior art and will not be elaborated on here.

[0038] In an operative manner, a rotating sleeve 11 is provided on one end of the screw 10, the rotating sleeve 11 is sleeved on the screw 10, a limit block 12 matching the width of the sliding notch is provided on the outer surface of the sleeve, one end of the limit block 12 is fixed on the rotating sleeve 11, a plurality of first stoppers 13 evenly distributed around the circumference are provided on the inner side surface of one end of the rotating rod 7 sleeve facing the end of the screw 10, a plurality of second stoppers 14 evenly distributed around the circumference are provided on the outer side surface of the end of the screw 10, and the first stopper 13 and the second stopper 14 are evenly distributed around the circumference. The sum of the degrees is greater than the radius difference between the rotating sleeve 11 and the screw 10, that is, when the first stopper 13 and the second stopper 14 are in contact, they can be blocked and limited to limit the rotation of the rotating sleeve 11, so that the rotating sleeve 11 can drive the screw 10 to rotate, and the distance from one end of the sliding notch toward the rotating sleeve 11 to one end of the second stopper 14 toward the sliding notch is greater than the sum of the lengths of the rotating sleeve 11 and the limit block 12, that is, the rotating sleeve 11 can act on the rotating rod 7 and the screw 10 respectively without causing interference.

[0039] Specifically, when it is necessary to rotate the rotating rod 7, it is only necessary to move the rotating sleeve 11 so that the limit block 12 is located in the end of the sliding notch. That is, when the rotating sleeve 11 rotates at this time, due to the obstruction of the side wall of the sliding notch, the rotating rod 7 will be driven to rotate as a whole, thereby adjusting the inclination angle of the supporting rod 6 relative to the conveyor belt 4; and when the rotating sleeve 11 moves toward the end of the screw rod 10, the limit block 12 is disengaged from the sliding notch, and the first stop block 13 and the second stop block 14 are in contact and blocked. Therefore, rotating the rotating sleeve 11 at this time will drive the screw rod 10 to rotate, thereby adjusting the spacing between adjacent supporting rods 6. The advantage of this setting method is that there is no need to set parts on the rotating rod 7 and the rotating sleeve 11 for workers to use a wrench or other tools to drive the two to rotate respectively, and when adjusting, the operator does not need to carry tools to operate, and it also avoids the problem of small space and inconvenience of using tools for adjustment, making the adjustment of this system simpler and more convenient.

[0040] In one practicable manner, an end block 15 is provided on one end of the screw 10 where the rotating sleeve 11 is arranged. The diameter of the end block 15 is larger than the diameter of the rotating sleeve 11 . The function of the end block 15 is to prevent the rotating sleeve 11 from sliding out.

[0041] In one feasible manner, a sliding block 19 is provided on the column 1, and the sliding block 19 is sleeved on the column 1. A plurality of limit pins are provided on the sliding block 19, and a plurality of evenly distributed limit holes are provided in the length direction of the column 1. The limit pins pass through the sliding block 19 and are located in the limit holes. One end of the support rod 20 is fixedly connected to the sliding block 19. By adjusting the position of the sliding block 19 on the column 1, the inclination angle of the mounting plate 2 can be adjusted, so that the device can be used for material boxes B of different heights, and for different spacings between the material box B and the entrance of the flexible grabbing and packaging mechanism A (different spacings will result in different inclination angles when the feeding mechanism C is installed).

[0042] In one feasible manner, a spring 8 is provided between the support rod 6 and the nut 9. The spring 8 is fixedly connected to the end of the support rod 6 and the surface of the nut 9 respectively. The spring 8 can realize bending unloading to prevent the part 22 between the hanging plate 18 and the support rod 6 from being stuck, resulting in the rigid transmission of torque between the two and causing damage.

[0043] In one feasible method, a plurality of threaded holes are provided in the length direction of the mounting plate 2, a through hole is provided on the end of the connecting plate 16, and the connecting plate 16 is fixed to the mounting plate 2 by bolts. This method can adjust the position of the connecting plate 16 on the mounting plate 2, and then adjust the distance between the hanging plate 18 and the supporting rod 6 when the telescopic element 17 is working.

[0044] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An auxiliary assembly system for a new energy vehicle air conditioner housing, characterized in that: The invention comprises a feeding mechanism, wherein the feeding mechanism comprises symmetrically arranged columns (1), the inner side surfaces of the upper ends of the two columns (1) are provided with mounting plates (2), one end of the mounting plates (2) is rotatably connected to the end of the column (1), the column (1) is provided with a support rod (20), the support rod (20) is used to maintain the inclined state of the mounting plate (2), a belt roller (3) is provided between the ends of the two mounting plates (2), the two ends of the belt roller (3) are respectively rotatably connected to the ends of the mounting plates (2), a conveying belt (4) is wound around the two belt rollers (3), a plurality of fixing blocks (5) are provided on the circumference of the outer surface of the conveying belt (4), and the fixing blocks (5) The fixing block (5) is fixed on the conveyor belt (4), and the two ends of the fixing block (5) are arranged toward the width direction of the conveyor belt (4). The fixing block (5) is provided with a plurality of supporting rods (6) evenly distributed along its length direction. One end of the supporting rod (6) is detachably connected to the fixing block (5), and the supporting rod (6) is arranged perpendicular to the fixing block (5). The lower outer surfaces of the two mounting plates (2) are provided with connecting plates (16), and the connecting plates (16) are arranged parallel to the supporting rods (6). One end of the connecting plate (16) is detachably connected to the mounting plate (2), and the other end of the connecting plate (16) is provided with a telescopic element (17). The two telescopic elements (17) A material hanging plate (18) is provided on the output end of the two telescopic elements (17), and the two ends of the material hanging plate (18) are respectively fixed to the output ends of the two telescopic elements (17), and the material hanging plate (18) is used to pull the parts (22) that are not in the correct placement position on the supporting rod (6) and drop them into the material box; an arc groove is provided in the length direction of the fixed block (5), and a rotating rod (7) is provided in the arc groove, and the outer side surface of the rotating rod (7) is frictionally connected to the inner side surface of the arc groove, and one end of the supporting rod (6) is detachably connected to the rotating rod (7); a nut (9) through-groove is provided inside the rotating rod (7), and a screw (10) is provided in the nut (9) through-groove, and the screw (10) is provided with a screw rod (10). Nuts (9) matching the number of the supporting rods (6) are provided, the nuts (9) are threadedly connected to the screw rod (10), and when the screw rod (10) rotates, the movement directions of adjacent nuts (9) on the screw rod (10) are opposite, the outer side surfaces of the nuts (9) are in sliding contact with the inner side surfaces of the through grooves of the nuts (9), the outer side surface of the rotating rod (7) is provided with a sliding notch connected to the through grooves of the nut (9), one end of a plurality of the supporting rods (6) is located in the sliding notch, and is respectively connected to the surfaces of a plurality of the nuts (9); a spring (8) is provided between the supporting rod (6) and the nut (9), and the spring (8) is respectively fixedly connected to the end of the supporting rod (6) and the surface of the nut (9).

2. The auxiliary assembly system for the air conditioner housing of a new energy vehicle according to claim 1, characterized in that: A rotating sleeve (11) is provided on one end of the screw (10), the rotating sleeve (11) being sleeved on the screw (10), a stopper (12) matching the width of the sliding notch is provided on the outer surface of the sleeve, one end of the stopper (12) is fixed on the rotating sleeve (11), a plurality of first stoppers (13) evenly distributed around the circumference are provided on the inner side surface of one end of the rotating rod (7) sleeve facing the end of the screw (10), a plurality of second stoppers (14) evenly distributed around the circumference are provided on the outer side surface of the end of the screw (10), the sum of the heights of the first stopper (13) and the second stopper (14) being greater than the difference in radius between the rotating sleeve (11) and the screw (10), and a distance from one end of the sliding notch facing the rotating sleeve (11) to one end of the second stopper (14) facing the sliding notch is greater than the sum of the lengths of the rotating sleeve (11) and the stopper (12).

3. The auxiliary assembly system for the air conditioner housing of a new energy vehicle according to claim 2, characterized in that: An end stopper (15) is provided on one end of the screw rod (10) on which the rotating sleeve (11) is arranged, and the diameter of the end stopper (15) is greater than the diameter of the rotating sleeve (11).

4. The auxiliary assembly system for the air conditioner housing of a new energy vehicle according to claim 1, characterized in that: A sliding block (19) is provided on the column (1), the sliding block (19) is sleeved on the column (1), a plurality of limit pins are provided on the sliding block (19) and are penetrated therethrough, a plurality of limit holes are evenly distributed in the length direction of the column (1), the limit pins penetrate the sliding block (19) and are located in the limit holes, and one end of the support rod (20) is fixedly connected to the sliding block (19).

5. The auxiliary assembly system for the air conditioner housing of a new energy vehicle according to claim 1, characterized in that: A plurality of threaded holes are provided in the length direction of the mounting plate (2), a through hole is provided at the end of the connecting plate (16), and the connecting plate (16) is fixed to the mounting plate (2) by means of bolts.

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