Mine car wheel pair dismounting tool

Abstract

The utility model provides a mine car wheel pair disassembling tool which comprises a disassembling piece, a tool body and a tool body. The disassembling piece is used for disassembling a mine car wheel pair. The wheel set fixing assembly is used for fixing a mine car wheel set; the mine car wheel pair is fixed through the wheel pair fixing assembly, the wheel is disassembled through the disassembling piece, the driving piece of the wheel pair fixing assembly moves in the vertical direction and drives the connecting block and the clamping part to move synchronously, the clamping part can be accurately positioned to the position of a connecting shaft of the mine car wheel pair, and the stability and the positioning precision of the clamping action are ensured; displacement of the wheel pair in the dismounting process is effectively avoided, after the wheel on one side is dismounted, the driving piece drives the mine car wheel pair to move upwards and break away from the ground, then the mine car wheel pair is rotated by a worker, the undismounted wheel on the other side is placed on the upper portion, then dismounting is conducted, the mine car wheel pair does not need to be manually and completely turned with force, and the physical strength of the worker is saved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine operation technology, specifically to a tool for disassembling mine car wheelsets. Background Technology

[0002] In mining production and transportation operations, rail transport plays a vital role, and mining cars, as the main means of transportation, experience continuous wear and tear on their wheelsets over time. However, the complex mining environment and high equipment maintenance requirements make it difficult to efficiently disassemble wheelsets using traditional maintenance tools, resulting in time-consuming, labor-intensive, inefficient, and costly wheelset disassembly work.

[0003] Therefore, existing technologies need further development. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a mining wheelset disassembly tool to solve the technical problem that traditional maintenance tools in related technologies are difficult to disassemble wheelsets efficiently, resulting in time-consuming, labor-intensive, inefficient, and high-labor-cost wheelset disassembly work.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a mining vehicle wheel set disassembly tool is provided, comprising: a disassembly component for disassembling the mining vehicle wheel set; a wheel set fixing assembly for fixing the mining vehicle wheel set; the mining vehicle wheel set is fixed by the wheel set fixing assembly, thereby allowing the disassembly component to disassemble the wheel set.

[0006] Furthermore, the wheelset fixing assembly includes: a drive member mounted on a first mounting reference, the drive end of the drive member being movably disposed in the vertical direction; a connecting block extending along the movement direction of the drive end of the drive member, the connecting block being mounted on the drive end of the drive member so as to drive the connecting block to move via the drive member; and a clamping part mounted on the connecting block and located on one side of the connecting block, the drive member driving the clamping part to move via the connecting block; the clamping part is used to clamp the connecting shaft between the two mine car wheels.

[0007] Furthermore, the wheelset fixing assembly also includes: a first clamping plate, the fixed end of which is rotatably mounted on the connecting block, the clamping end of which faces away from the connecting block, the extension direction from the fixed end to the clamping end of which is perpendicular to the movement direction of the connecting block, and a first arc-shaped groove extending along a first preset arc-shaped trajectory on the clamping end of the first clamping plate; a second clamping plate, movably mounted on the clamping end of the first clamping plate, and a second arc-shaped groove extending along a second preset arc-shaped trajectory; the first arc-shaped groove and the second arc-shaped groove are arranged opposite to each other to form a clamping space between them, so that at least a portion of the connecting shaft is located within the clamping space when clamping the connecting shaft; wherein the first clamping plate and the second clamping plate constitute a clamping part.

[0008] Furthermore, one side of the second clamping plate is connected to one side of the first clamping plate by a pin, and the other side of the second clamping plate is detachably connected to the other side of the first clamping plate; the wheelset fixing assembly also includes: a fixing member located on the other side of the second clamping plate and the other side of the first clamping plate, the fixing member being used to fix the first clamping plate and the second clamping plate relative to each other when clamping the connecting shaft.

[0009] Further, the fastener includes: a first fixing plate, which is disposed on the side of the first clamping plate away from the pin and protrudes from the first clamping plate; a second fixing plate, which is disposed on the side of the second clamping plate away from the pin and protrudes from the second clamping plate; and a fixing screw, which passes through the first fixing plate and the second fixing plate and is fixedly connected relative to each other by threaded fastening.

[0010] Furthermore, the fastener also includes: a handle, which is mounted on one end of the fixing screw to adjust the position of the fixing screw relative to the first fixing plate and the second fixing plate; a fastening nut, which is fixedly connected to the fixing screw and is spaced apart from the handle; and the fastening nut is used to abut against the second fixing plate.

[0011] Furthermore, the mine car wheel disassembly tool also includes: a disassembly auxiliary assembly, which includes: a damping telescopic rod, which is mounted on a second mounting reference; the damping telescopic rod is located on the side of the drive member away from the clamping part; an auxiliary rod, which is disposed on the top of the damping telescopic rod; the auxiliary rod extends along a first preset direction; and a tool fixing part, which is used to fix the disassembly part, and the tool fixing part is connected to the end of the auxiliary rod away from the damping telescopic rod.

[0012] Furthermore, the disassembly auxiliary assembly also includes: a first arc-shaped plate extending along a third preset arc-shaped trajectory and a second arc-shaped plate extending along a fourth preset arc-shaped trajectory. The first arc-shaped plate and the second arc-shaped plate are arranged opposite to each other to form a placement cavity for placing the disassembly part between the first arc-shaped plate and the second arc-shaped plate. One end of the second arc-shaped plate is movably arranged relative to one end of the first arc-shaped plate, and the other end of the second arc-shaped plate is detachably connected to the other end of the first arc-shaped plate by fasteners. The first arc-shaped plate and the second arc-shaped plate form a tool fixing part.

[0013] Furthermore, the mine car wheel disassembly tool also includes: a support frame, comprising: a first support beam, a second support beam, and a third support beam connected in sequence; the first and third support beams are arranged opposite to each other and extend along a second preset direction; the two ends of the second support beam are respectively connected to the first and third support beams; a damping telescopic rod is installed on the top of the second support beam; a fourth support beam is located on top of the first and third support beams, and the two ends of the fourth support beam are respectively connected to the first and third support beams; the fourth support beam is spaced apart from the second support beam along the second preset direction; a driving component is installed on the top of the fourth support beam.

[0014] Beneficial effects:

[0015] 1. The driving component of the wheelset fixing assembly moves vertically and drives the connecting block and clamping part to move synchronously, so that the clamping part can be accurately positioned at the connecting shaft of the mine car wheel set, ensuring the stability and positioning accuracy of the clamping action, effectively avoiding displacement of the wheelset during disassembly. Moreover, after the disassembly of one side of the wheel is completed, the driving component drives the mine car wheel set to move upward and off the ground. Then the worker rotates the mine car wheel set so that the other side of the wheel that has not been disassembled is placed on top, and then disassembly is carried out. There is no need to manually rotate the mine car wheel set completely, saving the worker's physical strength.

[0016] 2. The pin connection structure allows the second clamping plate to rotate around the shaft to open and close the clamping opening. Combined with the design of the fixing parts, it is easy to fasten the first and second clamping plates. It can be adapted to the connecting shafts of mine car wheels of different diameters, thus improving its versatility.

[0017] 3. The placement cavity formed by the first arc plate and the second arc plate adopts a concentric arc structure, and with the adjustable fastener design, it forms a fixed cavity for disassembly parts, which improves the stability of tool installation compared with traditional caliper-type fixation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a mine car wheel disassembly tool used in an embodiment of this utility model;

[0019] Figure 2This is a schematic diagram of the clamping assembly structure of a mine car wheel disassembly tool used in an embodiment of this utility model;

[0020] Figure 3 This is a tool for disassembling mine car wheelsets used in an embodiment of the present invention. Figure 2 Enlarged view of point A in the image.

[0021] The above figures include the following reference numerals:

[0022] 1. Wheelset fixing assembly; 2. Drive component; 3. Connecting block; 4. First clamping plate; 5. Second clamping plate; 6. First fixing plate; 7. Second fixing plate; 8. Fixing screw; 9. Handheld part; 10. Fastening nut; 11. Disassembly auxiliary assembly; 12. Damping telescopic rod; 13. Auxiliary rod; 14. Tool fixing part; 15. First arc plate; 16. Second arc plate; 17. Support frame; 18. First support beam; 19. Second support beam; 20. Third support beam; 21. Fourth support beam. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] According to an embodiment of this utility model, a tool for disassembling mine car wheelsets is provided. Please refer to [link / reference]. Figures 1 to 3 It includes: a disassembly component for disassembling mine car wheelsets; a wheelset fixing assembly 1 for fixing mine car wheelsets; and a disassembly component for disassembling the wheelsets by fixing the mine car wheelsets with the wheelset fixing assembly 1.

[0025] Specifically, the disassembly tools are either electric or pneumatic disassembly tools.

[0026] By adopting the above technical solution, when disassembling the wheels on the mine car wheelset, the wheels are fixed by the wheelset fixing component 1, and then the nuts on the wheels are removed by the pneumatic disassembly tool. This solves the problem that traditional maintenance tools are difficult to disassemble wheelsets efficiently, resulting in time-consuming, labor-intensive, inefficient, and costly wheelset disassembly work.

[0027] Specifically, a mine car wheel pair consists of two pairs of wheels used by a mine car, each pair of wheels consisting of two wheels and a connecting axle between the two wheels.

[0028] Please refer to Figure 1The wheelset fixing assembly 1 includes: a drive member 2, which is mounted on a first mounting reference and whose drive end is movably disposed in the vertical direction; a connecting block 3, which extends along the movement direction of the drive end of the drive member 2 and is mounted on the drive end of the drive member 2 so as to drive the connecting block 3 to move; and a clamping part, which is mounted on the connecting block 3 and is located on one side of the connecting block 3, so as to drive the clamping part to move through the connecting block 3; the clamping part is used to clamp the connecting shaft between the two mine car wheels.

[0029] By adopting the above technical solution, the driving component 2 of the wheelset fixing component 1 moves vertically and drives the connecting block 3 and the clamping part to move synchronously, so that the clamping part can be accurately positioned at the connecting shaft position of the mine car wheel, ensuring the stability and positioning accuracy of the clamping action, effectively avoiding the displacement of the wheelset during disassembly. Moreover, after the disassembly of one side of the wheel is completed, the driving component 2 drives the mine car wheel to move upward and off the ground. Then the worker rotates the mine car wheel so that the other side of the wheel that has not been disassembled is placed on top, and then disassembly is carried out. There is no need to manually rotate the mine car wheel completely, saving the worker's physical strength.

[0030] Specifically, the driving component 2 is an electric push rod or a hydraulic push rod.

[0031] Please refer to Figure 1 and Figure 2 The wheelset fixing assembly 1 further includes: a first clamping plate 4, the fixed end of which is rotatably mounted on the connecting block 3, the clamping end of which faces away from the connecting block 3, the extension direction from the fixed end to the clamping end of which is perpendicular to the movement direction of the connecting block 3, and a first arc-shaped groove extending along a first preset arc trajectory; a second clamping plate 5, movably mounted on the clamping end of the first clamping plate 4, and a second arc-shaped groove extending along a second preset arc trajectory; the first arc-shaped groove and the second arc-shaped groove are arranged opposite to each other to form a clamping space between them, so that at least a portion of the connecting shaft is located within the clamping space when clamping the connecting shaft; wherein, the first clamping plate 4 and the second clamping plate 5 constitute a clamping part.

[0032] By adopting the above technical solution, the double arc groove structure can closely fit the outer circumferential surface of the connecting shaft, increase the contact area, significantly reduce local stress concentration, avoid damage to the shaft surface, and enhance clamping stability.

[0033] Please refer to Figure 2One side of the second clamping plate 5 is connected to one side of the first clamping plate 4 by a pin, and the other side of the second clamping plate 5 is detachably connected to the other side of the first clamping plate 4; the wheelset fixing assembly 1 also includes: a fixing member, which is located on the other side of the second clamping plate 5 and the other side of the first clamping plate 4, and the fixing member is used to fix the first clamping plate 4 and the second clamping plate 5 relative to each other when clamping the connecting shaft.

[0034] By adopting the above technical solution, the pin connection structure allows the second clamping plate 5 to rotate around the shaft to open and close the clamping opening. Combined with the design of the fixing parts, it is easy to fasten the first clamping plate 4 and the second clamping plate 5. It can be adapted to the connecting shaft of mine car wheels of different diameters, and its versatility is improved.

[0035] Please refer to the figure. The fasteners include: a first fixing plate 6, which is located on the side of the first clamping plate 4 away from the pin and protrudes from the first clamping plate 4; a second fixing plate 7, which is located on the side of the second clamping plate 5 away from the pin and protrudes from the second clamping plate 5; and a fixing screw 8, which passes through the first fixing plate 6 and the second fixing plate 7 and is fixedly connected to each other by threaded fastening.

[0036] By adopting the above technical solution, the first fixing plate 6 and the second fixing plate 7 are respectively protruding and, together with the threaded locking mechanism of the fixing screw 8 and the fastening nut 10, ensure that the gap between the first clamping plate 4 and the second clamping plate 5 is controlled within 0.1mm in the clamping state, so as to achieve a rigid connection.

[0037] Please refer to Figure 3 The fastener also includes: a handheld part 9, which is mounted on one end of the fixing screw 8 to adjust the position of the fixing screw 8 relative to the first fixing plate 6 and the second fixing plate 7; a fastening nut 10, which is fixedly connected to the fixing screw 8 and is spaced apart from the handheld part 9; and the fastening nut 10 is used to abut against the second fixing plate 7.

[0038] Specifically, the hand grip 9 is designed with a non-slip texture.

[0039] By adopting the above technical solution, the anti-slip textured grip of the hand-held part 9, together with the fastening nut 10, forms a dual-point force application structure, enabling the operator to complete the tightening or loosening of the fixing screw 8 with one hand, thus shortening the operation time.

[0040] Please refer to Figure 1The mine car wheel disassembly tool also includes: a disassembly auxiliary assembly 11, which includes: a damping telescopic rod 12, which is mounted on a second mounting reference; the damping telescopic rod 12 is located on the side of the drive member 2 away from the clamping part; an auxiliary rod 13, which is disposed on the top of the damping telescopic rod; the auxiliary rod 13 extends along a first preset direction; and a tool fixing part 14, which is used to fix the disassembly part and is connected to the end of the auxiliary rod 13 away from the damping telescopic rod 12.

[0041] Specifically, the auxiliary rod 13 is connected to the damping telescopic rod 12 through a damping universal joint, so that the auxiliary rod 13 can drive the disassembly parts to make angle adjustments.

[0042] By adopting the above technical solution, the damping telescopic rod 12, together with the auxiliary rod 13, enables the tool fixing part 14 to rise, fall and adjust its angle, ensuring that the force direction of the disassembly tool is perpendicular to the wheel axis, thereby improving disassembly efficiency.

[0043] Please refer to Figure 1 The disassembly auxiliary assembly 11 further includes: a first arc plate 15 extending along a third preset arc trajectory and a second arc plate 16 extending along a fourth preset arc trajectory. The first arc plate 15 and the second arc plate 16 are disposed opposite to each other to form a placement cavity for placing the disassembly part between the first arc plate 15 and the second arc plate 16. One end of the second arc plate 16 is movably disposed relative to one end of the first arc plate 15, and the other end of the second arc plate 16 is detachably connected to the other end of the first arc plate 15 by fasteners. The first arc plate 15 and the second arc plate 16 form a tool fixing part.

[0044] By adopting the above technical solution, the placement cavity formed by the first arc plate 15 and the second arc plate 16 adopts a concentric arc structure, and with the adjustable fastener design, it forms a fixed cavity for disassembly parts, which improves the stability of tool installation compared with traditional caliper-type fixing.

[0045] Specifically, the fasteners include bolts and nuts. The bolts pass through the first arc plate 15 and the second arc plate 16 and are then threadedly connected to the bolts by the nuts, thereby fixing the first arc plate 15 and the second arc plate 16.

[0046] Please refer to Figure 2The mine car wheel disassembly tool also includes: a support frame 17, which includes: a first support beam 18, a second support beam 19, and a third support beam 20 connected in sequence; the first support beam 18 and the third support beam 20 are arranged opposite to each other and extend along a second preset direction; the two ends of the second support beam 19 are connected to the first support beam 18 and the third support beam 20 respectively, and a damping telescopic rod 12 is installed on the top of the second support beam 19; a fourth support beam 21, which is located on top of the first support beam 18 and the third support beam 20, and the two ends of the fourth support beam 21 are connected to the first support beam 18 and the third support beam 20 respectively; the fourth support beam 21 and the second support beam 19 are spaced apart along the second preset direction; and a driving component 2 is installed on the top of the fourth support beam 21.

[0047] By adopting the above technical solution, the support frame 17 adopts a symmetrical structure of the first support beam 18 and the third support beam 20, and forms a double-layer frame with the fourth support beam 21 and the second support beam 19, which improves the overall structural rigidity and effectively prevents the support frame 17 from deforming.

[0048] Working principle:

[0049] First, the second clamping plate 5 is rotated and unfolded around the pin shaft, and the connecting shaft 22 is placed into the clamping space formed by the first arc groove and the second arc groove. Then, the second clamping plate 5 is rotated again, and the fixing screw 8 passes through the first fixing plate 6 and the second fixing plate 7. The fastening nut 10 is tightened to complete the locking.

[0050] Install the disassembly tool: Adjust the damping telescopic rod 12 to a suitable height, place the pneumatic disassembly tool into the placement cavity formed by the first arc plate 15 and the second arc plate 16, close the second arc plate 16 and fix it with fasteners to complete the installation of the pneumatic disassembly tool;

[0051] Disassembly: Activate the pneumatic disassembly tool to disassemble the wheel by applying it to the bolts or nuts;

[0052] Rotating mine car wheelset: After disassembling one side, start drive component 2 to lift the mine car wheelset upward. Then, the worker rotates the mine car wheelset to rotate the undisassembled side to the top. Then, control drive component 2 to lower it so that the disassembled side is in contact with the ground. Then, start the pneumatic disassembly tool again to disassemble.

[0053] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; it should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than those illustrated or described herein.

[0054] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0055] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0056] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0057] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A tool for disassembling mine car wheelsets, characterized in that, include: A disassembly component, used for disassembling mine car wheelsets; A wheelset fixing assembly (1) is used to fix a mine car wheel pair; the wheelset is fixed by the wheelset fixing assembly (1) so that the disassembly component can disassemble the wheel; The wheelset fixing assembly (1) includes: A driving element (2) is mounted on a first mounting reference, and the driving end of the driving element (2) is movably arranged in the vertical direction. Connecting block (3), the connecting block (3) extends along the movement direction of the driving end of the driving member (2), the connecting block (3) is installed on the driving end of the driving member (2) so as to drive the connecting block (3) to move through the driving member (2); The clamping part is mounted on the connecting block (3) and is located on one side of the connecting block (3). The driving member (2) drives the clamping part to move through the connecting block (3). The clamping part is used to clamp the connecting shaft between the two mine car wheels.

2. The mine car wheel disassembly tool according to claim 1, characterized in that, The wheelset fixing assembly (1) also includes: A first clamping plate (4) is rotatably mounted on the connecting block (3). The clamping end of the first clamping plate (4) is set in a direction away from the connecting block (3). The extension direction from the fixed end of the first clamping plate (4) to the clamping end of the first clamping plate (4) is perpendicular to the movement direction of the connecting block (3). A first arc-shaped groove is provided on the clamping end of the first clamping plate (4). The first arc-shaped groove extends along a first preset arc-shaped trajectory. The second clamping plate (5) is movably disposed on the clamping end of the first clamping plate (4). The second clamping plate (5) has a second arc-shaped groove extending along a second preset arc trajectory. The first arc-shaped groove and the second arc-shaped groove are disposed opposite to each other to form a clamping space between the first arc-shaped groove and the second arc-shaped groove, so that when the connecting shaft is clamped, at least a portion of the connecting shaft is located within the clamping space. The first clamping plate (4) and the second clamping plate (5) constitute the clamping part.

3. The mine car wheel disassembly tool according to claim 2, characterized in that, One side of the second clamping plate (5) is connected to one side of the first clamping plate (4) by a pin, and the other side of the second clamping plate (5) is detachably connected to the other side of the first clamping plate (4); the wheelset fixing assembly (1) further includes: a fixing member, which is located on the other side of the second clamping plate (5) and the other side of the first clamping plate (4), and the fixing member is used to fix the first clamping plate (4) and the second clamping plate (5) relative to each other when clamping the connecting shaft.

4. The mine car wheel disassembly tool according to claim 3, characterized in that, The fastener includes: The first fixing plate (6) is disposed on the side of the first clamping plate (4) away from the pin, and the first fixing plate (6) protrudes from the first clamping plate (4). The second fixing plate (7) is disposed on the side of the second clamping plate (5) away from the pin, and the second fixing plate (7) protrudes from the second clamping plate (5); A fixing screw (8) is used to pass through the first fixing plate (6) and the second fixing plate (7), and the first fixing plate (6) and the second fixing plate (7) are fixedly connected relative to each other by threaded fastening.

5. The mine car wheel disassembly tool according to claim 4, characterized in that, The fastener also includes: Handheld part (9) is mounted on one end of the fixing screw (8) to adjust the position of the fixing screw (8) relative to the first fixing plate (6) and the second fixing plate (7) by means of the handheld part (9); A fastening nut (10) is fixedly connected to the fixing screw (8), and the fastening nut (10) is spaced apart from the hand-held part (9); the fastening nut (10) is used to abut against the second fixing plate (7).

6. The mine car wheel disassembly tool according to claim 1, characterized in that, The mine car wheel disassembly tool further includes: a disassembly auxiliary component (11), which includes: A damping telescopic rod (12) is mounted on a second mounting reference; the damping telescopic rod (12) is located on the side of the drive member (2) away from the clamping part; An auxiliary rod (13) is disposed on the top of the damping telescopic rod; the auxiliary rod (13) extends along a first preset direction; Tool fixing part (14) is used to fix the disassembly part, and the tool fixing part (14) is connected to the end of the auxiliary rod (13) away from the damping telescopic rod (12).

7. The mine car wheel disassembly tool according to claim 6, characterized in that, The disassembly auxiliary assembly (11) further includes: a first arc plate (15) extending along a third preset arc trajectory and a second arc plate (16) extending along a fourth preset arc trajectory, wherein the first arc plate (15) and the second arc plate (16) are arranged opposite to each other to form a placement cavity for placing the disassembly component between the first arc plate (15) and the second arc plate (16); One end of the second arc plate (16) is movably disposed relative to one end of the first arc plate (15), and the other end of the second arc plate (16) is detachably connected to the other end of the first arc plate (15) by fasteners. The first arc plate (15) and the second arc plate (16) form the tool fixing part.

8. The mine car wheel disassembly tool according to claim 6, characterized in that, The mine car wheel disassembly tool also includes: a support frame (17), the support frame (17) comprising: The first support beam (18), the second support beam (19) and the third support beam (20) are connected in sequence. The first support beam (18) and the third support beam (20) are arranged opposite to each other. The first support beam (18) and the third support beam (20) extend along a second preset direction. The two ends of the second support beam (19) are connected to the first support beam (18) and the third support beam (20) respectively. The damping telescopic rod (12) is installed on the top of the second support beam (19). The fourth support beam (21) is located on top of the first support beam (18) and the third support beam (20). The two ends of the fourth support beam (21) are connected to the first support beam (18) and the third support beam (20) respectively. The fourth support beam (21) and the second support beam (19) are spaced apart along the second preset direction. The driving component (2) is installed on the top of the fourth support beam (21).

Images