Wheelset axle end bolt automatic tightening apparatus and method

Abstract

The present application relates to the technical field of railway vehicle bogie axle end bolt tightening, and discloses a wheel set axle end bolt automatic tightening device and method, wherein a recognition module is used to recognize the position information of the wheel set axle end, and the position information is fed back to the axle end bolt tightening machine; a control motor drives the tightening box body to rotate on the mounting plate along the horizontal axis by a rotary support to automatically align the axle end bolt by a set angle, and then the axle end bolt is tightened; the clamping mechanism is reset, the V-shaped block is reset, the wheel set is supported by a wheel set support rail, and the AGV trolley moves the wheel set out of the wheel set support rail; this method not only adapts to the tightening of axle end bolts of different vehicle types and different distribution pitch circles on the axle end bolt tightening machine, realizes flexible tightening operation of axle end bolts of multiple vehicle types, but also realizes automatic position recognition and alignment of the axle end bolt through cooperation of the axle end bolt tightening machine, the bolt recognition mechanism and the lifting positioning mechanism, so that the wheel set axle end bolt tightening operation is automated and unmanned.

Description

Technical Field

[0001] This invention relates to the field of railway vehicle bogie axle end bolt tightening technology, and in particular to an automatic wheel set axle end bolt tightening device and method. Background Technology

[0002] With the technological advancements in heavy-haul and high-speed railway vehicles, higher demands are being placed on the automation, informatization, and assembly quality of bogie assembly processes. To reduce the impact of human factors during assembly, lower the labor intensity of workers, and improve production efficiency, the demand for the construction of digital assembly production lines for wheel and axle assembly is increasing. The automation upgrade of axle end bolt tightening operations has become a key aspect of the construction of digital wheel and axle assembly production lines.

[0003] The common method for tightening axle-end bolts in the railway vehicle industry is as follows: wheelsets are manually transported along the track and placed in fixed positions, then tightened manually or using a truss track-mounted tightening machine. Manual tightening requires at least one person to tighten each of the six bolts individually, which is inefficient. The truss track-mounted tightening machine requires two people to move the tightening machine on both sides and manually align it before starting the tightening operation. After completion, the tightening machine is manually removed from its working position. Furthermore, due to space limitations, the number of wheelsets that the truss track can cover is sometimes limited, and issues such as interference between the equipment and the workpiece must be considered. Therefore, this method is inefficient, still requires manual assistance, has low automation, and occupies a significant amount of space due to the truss track layout. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an automatic wheel axle end bolt tightening device and method. A support frame is installed in a pit, and an axle end bolt tightening machine is slidably installed on the support frame. Through the cooperation of the axle end bolt tightening machine, bolt identification mechanism, and lifting and positioning mechanism, the position of the axle end bolt is automatically identified and aligned, thereby realizing the automation and unmanned operation of wheel axle end bolt tightening, eliminating the need for manual intervention, improving processing efficiency, and saving space by eliminating the need for truss tracks.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] In a first aspect, an automatic fastening device for wheelset axle end bolts includes:

[0007] The support frame has support sections at both ends and a pair of wheel set support rails in the middle. A mounting plate is slidably connected to the support sections. An axle end bolt tightening machine is mounted on the mounting plate and is rotatably connected to it via a control motor and a slewing support. The axle end bolt tightening machine contains a diameter-changing mechanism connected to a tightening shaft. Two sets of support sections are positioned close to each other, with a bolt recognition mechanism at one end. This bolt recognition mechanism includes a liftable recognition module. Based on the wheel set axle end bolt position information obtained from the recognition module, the axle end bolt tightening machine rotates along the horizontal axis to align with the axle end bolts using a control motor and a slewing support.

[0008] The two sets of linked lifting and positioning mechanisms include V-blocks located on the side of the two sets of support sections that are close to each other. The V-blocks support and lift the ends of the wheelset.

[0009] The clamping mechanism includes a clamping bracket, on which a first clamping block and a second clamping block are slidably disposed, the first clamping block and the second clamping block extending above the wheelset support rail to clamp the wheel disc.

[0010] As a further implementation, the wheelset support rail is located close to the support part, and the lifting and positioning mechanism is located between the wheelset support rail and the support part. The wheelset support rail is perpendicular to the support frame and is used to connect with the wheelset's conveyor rail.

[0011] As a further implementation, a check block is connected to the wheelset support rail via a rotating shaft. The center of gravity of the check block is offset relative to the rotating shaft, and the check block achieves contact with the passing wheelset through rotational limiting.

[0012] As a further implementation, the top of the support is connected to the mounting plate via a slide rail, and the mounting plate moves along the slide rail via a drive mechanism. The shaft end bolt tightening machine includes a tightening box, which is rotatably engaged with a first support frame and a second support frame at both ends that are mounted on the mounting plate.

[0013] As a further implementation, the end of the tightening box is connected to a control motor via a slewing support on a second support frame. The control motor drives the tightening box to rotate along the horizontal axis on the mounting plate via the slewing support.

[0014] As a further implementation, the bolt identification mechanism includes an inverted U-shaped identification module frame fixed to the support. The identification module is mounted on the identification module frame via a lifting mechanism, and the maximum lifting height of the identification module is greater than that of the tightening shaft.

[0015] As a further implementation, the clamping mechanism includes a clamping bracket located at the bottom of the wheelset support rail. The bottom ends of the first clamping block and the second clamping block are slidably engaged with the rail on the bottom surface of the clamping bracket. The clamping cylinder is fixed on the first clamping block, and its output end passes through the first clamping block and is connected to the second clamping block.

[0016] As a further implementation, the lifting and positioning mechanism includes a positioning frame, a lifting machine is provided between the two wheel support rails, the lifting machine is connected to the V-block on the positioning frame through a coupling and a reducer, and the positioning frame is provided with a guide rod to assist in the lifting and lowering of the positioning V-block.

[0017] As a further implementation, the end of the support is provided with a calibration platform bracket for installing a calibration mechanism. The calibration mechanism includes a portable bracket, with simulated bolts and calibration sensors connected by threads on both sides of the portable bracket, and a reaction device on the top of the simulated bolts.

[0018] Secondly, an automatic tightening method for wheelset axle end bolts, employing any of the above-described automatic tightening devices for wheelset axle end bolts, includes the following steps:

[0019] Once the wheelset reaches the wheelset support rail, the lifting and positioning mechanism lifts the wheelset via V-blocks, and the clamping mechanism clamps the wheel disc via first and second clamping blocks. Then, the identification module descends, identifies the position information of the wheelset axle end, and feeds this information back to the axle end bolt tightening machine. The identification module rises, and the control motor drives the tightening box to rotate at a set angle along the horizontal axis on the mounting plate via a slewing support to automatically align the axle end bolts. The axle end bolt tightening machine then tightens the axle end bolts. The clamping mechanism resets, the V-blocks reset, the wheelset is supported by the wheelset support rail, and the AGV trolley moves the wheelset off the wheelset support rail.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. This invention installs a support frame in a pit, and a shaft end bolt tightening machine is slidably installed on the support frame. Through the cooperation of the shaft end bolt tightening machine, bolt identification mechanism, and lifting and positioning mechanism, the position of the shaft end bolt is automatically identified and aligned, thereby realizing the automation and unmanned operation of wheel set shaft end bolt tightening, without the need for manual intervention, improving processing efficiency, and at the same time, without the need to set up truss tracks, saving space.

[0022] 2. The two sets of support parts of the present invention are provided with a bolt identification mechanism at one end close to each other. The shaft end bolt tightening machine uses the control motor to drive the tightening box to rotate along the horizontal axis by a corresponding angle through the rotary support based on the position information of the wheel set shaft end bolt obtained by the identification module, so as to align the tightening shaft and the bolt and tighten the shaft end bolt without manual intervention.

[0023] 3. The lifting mechanism of the present invention can lift the wheelset from the wheelset support rail so that the height of the wheelset axle end matches the height of the axle end bolt tightening machine, and is clamped and fixed by the clamping mechanism, which facilitates the tightening of the axle end bolts. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0025] Figure 1 This diagram shows the overall structure of the automatic wheel axle end bolt fastening device in an embodiment of the present invention.

[0026] Figure 2 This diagram illustrates the structure of the support frame in an embodiment of the present invention.

[0027] Figure 3 A partial structural schematic diagram of the support frame in an embodiment of the present invention is shown;

[0028] Figure 4 This diagram shows the structure of the shaft end bolt tightening machine in an embodiment of the present invention.

[0029] Figure 5 This diagram illustrates the structure of the bolt recognition module in an embodiment of the present invention.

[0030] Figure 6 This diagram shows a structural schematic of the clamping mechanism in an embodiment of the present invention.

[0031] Figure 7 This diagram shows a schematic representation of the check valve mechanism in an embodiment of the present invention.

[0032] Figure 8 A schematic diagram of the verification mechanism in an embodiment of the present invention is shown.

[0033] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0034] Among them: 1-support frame, 2-shaft end bolt tightening machine, 3-bolt identification mechanism, 4-lifting and positioning mechanism, 5-clamping mechanism, 6-check mechanism, 7-verification mechanism, 8-wheel set support rail, 9-wheel disc;

[0035] 11-Mounting plate, 12-Slide rail, 13-Lifting machine, 14-Leveling mechanism, 15-Verification platform bracket, 21-Control motor, 22-Slewing support, 23-First support frame, 24-Outer cover, 25-Tightening shaft, 26-Tightening housing, 27-Diameter changing mechanism, 28-Second support frame, 29-Sleeve;

[0036] 31-Identification module frame, 32-Buffer, 33-Lifting mechanism, 34-Identification module;

[0037] 41-Positioning frame, 42-V-block;

[0038] 51-First clamping block, 52-Clamping cylinder, 53-Second clamping block, 54-Clamping bracket

[0039] 61-Check block, 62-Rotating shaft, 71-Simulated bolt, 72-Reaction device, 73-Portable bracket, 74-Verification sensor. Detailed Implementation

[0040] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0041] Example 1

[0042] In a typical embodiment of the present invention, reference is made to Figures 1-8 As shown, an automatic wheelset axle end bolt tightening device includes a support frame 1, an axle end bolt tightening machine 2, a bolt identification mechanism 3, a lifting and positioning mechanism 4, a clamping mechanism 5, a check mechanism 6, and a verification mechanism 7. The bottom of the support frame 1 is in a pit in the ground through a leveling mechanism 14. The leveling mechanism 14 includes a support frame, which is connected to the support frame 1 by bolts. The support frame 1 is leveled by rotating the bolts.

[0043] like Figure 1 and Figure 2 As shown, the support frame 1 has support parts at both ends for mounting the shaft end bolt tightening machine 2, and a pair of wheel set support rails in the middle for supporting the wheel set. In this embodiment, in order to improve work efficiency, two sets of shaft end bolt tightening machines 2, bolt identification mechanism 3, lifting and positioning mechanism 4, clamping mechanism 5, check mechanism 6, and verification mechanism 7 are set at the left and right ends of the support frame respectively, and simultaneously tighten the shaft end bolts of the left and right ends of the wheel set.

[0044] like Figure 4 As shown, the shaft end bolt tightening machine 2 includes a tightening housing 26, with an outer cover 24 fitted around the outside of the tightening housing 26. Inside the tightening housing 26 are three tightening shafts 25, each fixed to a diameter-changing mechanism 27. The diameter-changing mechanism 27 is mounted on the tightening housing 26 and can control the movement of the three tightening shafts 25 towards the rotation center of the tightening housing 26. It is compatible with bolt tightening for multi-axis wheelsets with different pitch circles. The front end of the tightening shaft 25 extends out of the tightening housing 26 and is connected to a sleeve 29 for mating with wheelset bolts. The rear end of the tightening housing 26 is connected to a control motor 21 and a slewing support 22. The rotation angle of the tightening housing 26 can be precisely controlled by controlling the motor 21 and the slewing support 22.

[0045] The bottom ends of the tightening housing 26 are supported by the first support frame 23 and the second support frame 28 on the mounting plate 11. The tightening housing 26 is rotatably connected to the first support frame 23 and the second support frame 28 through rollers. The control motor 21 and the rotary support 22 are mounted on the first support frame 23. The control motor 21 can realize the rotation of the tightening housing 26 relative to the first support frame 23 and the second support frame 28 along the horizontal axis through the rotary support 22. Thus, based on the shaft end bolt position information obtained by the identification module, the tightening shaft 25 can be automatically aligned with the shaft end bolt position without manual intervention.

[0046] The shaft end bolt tightening machine 2 can move laterally along the support via the mounting plate 11 and the slide rail 12, allowing it to move closer to or further away from the shaft end bolt. The variable diameter mechanism 27 in this embodiment is existing technology, which can adapt to the tightening of shaft end bolts with different pitch circles for different vehicle models on the shaft end bolt tightening machine, realizing flexible tightening operations for shaft end bolts of multiple vehicle models.

[0047] like Figure 1 and Figure 2 As shown, a slide rail 12 is provided laterally on the support section. The mounting plate 11 slides against the top surface of the support section through the slide rail 12. The shaft end bolt tightening machine 2 is installed on the mounting plate 11. A pair of wheel set support rails 8 are installed between the two support sections. The wheel set support rails 8 are located near the support sections on both sides and are perpendicular to the support frame 1. They are used to connect with the wheel set conveyor rail, so that the AGV trolley can transport the wheelset on the conveyor rail to the wheel set support rail 8, and then perform the wheel set bolt tightening work.

[0048] like Figure 7 As shown, the anti-reverse mechanism 6 includes a rotating shaft 62 and an anti-reverse block 61 fixedly installed on the rotating shaft 62. The anti-reverse mechanism 6 is set on the wheelset support rail and is set in pairs on one side of the wheelset bolt tightening station on the wheelset support rail 8 to block the wheelset from moving backward.

[0049] The center of gravity of the check block 61 is offset relative to the shaft. The check block 61 achieves contact with the passing wheelset by rotating and limiting. When the wheelset enters the tightening area, the check block flattens it in the direction of entry by the wheel disc. After the wheelset passes, the check block returns to its original position due to the offset of its own center of gravity to prevent the wheelset from rolling on the support track.

[0050] The height of the wheelset support rail 8 is lower than the height of the support section, used to support the wheel discs 9 of the wheelset. A lifting and positioning mechanism 4 is provided between the wheelset support rail 8 and the support section. The lifting and positioning support includes a positioning frame fixed on the support frame 1. A V-block 42 is provided on the top of the positioning frame 41 to support the support end of the wheelset. A lift 13 is provided between the two wheelset support rails 8. The lift 13 cooperates with the lead screw on the positioning frame through a coupling and a reducer assembly. The top of the lead screw is connected to the V-block 42, thereby realizing the lifting and lowering of the V-block 42 driven by the lead screw. Guide rods are also provided on both sides of the positioning frame 41 to assist in the lifting and lowering of the positioning V-block. The guide rods slide with the positioning frame 41 through a straight axial direction. The top of the guide rods is connected to the V-block 42. The guide rods are used to improve the stability of the V-block 42 during the lifting and lowering process. The lift 13 drives the two sets of V-blocks to lift the wheelset on the wheelset support rail 8 at the same time, so as to lift the wheelset bolts for tightening.

[0051] After the lifting and positioning mechanism 4 lifts the wheelset, it needs to be clamped and secured to facilitate bolt tightening. For example... Figure 1 and Figure 6 As shown, the clamping mechanism 5 includes a clamping bracket 54 mounted on the support frame 1 and located at the bottom of the wheelset support rail 8. Slots on the left and right sides of the clamping bracket 54 form a moving space for the first clamping block 51 and the second clamping block 53. A track is provided on the bottom surface of the top plate of the clamping bracket. The bottom ends of both the first and second clamping blocks slide in engagement with the track on the bottom surface of the clamping bracket. A clamping cylinder 52 is fixed to the first clamping block, and its output end passes through the first clamping block 51 and is connected to the second clamping block 53 via a cylinder hinge seat. The clamping cylinder 52 drives the first clamping block 51 and the second clamping block 53 to move simultaneously to clamp the wheel disc. The tops of the first and second clamping blocks extend from the left and right sides of the wheelset support rail upwards to clamp the wheel disc.

[0052] like Figure 1 and Figure 5 As shown, the top surfaces of the two sets of support parts are close to each other and are provided with a bolt identification mechanism 3. The bolt identification mechanism 3 includes a liftable identification module 34. The shaft end bolt tightening machine 2 tightens the shaft end bolts according to the wheel set shaft end bolt position information obtained by the identification module 34.

[0053] The bolt identification mechanism 3 includes an inverted U-shaped identification module frame 31 fixed to a support. The identification module frame 31 has guide rails, and the identification module 34 is mounted on these guide rails via a lifting mechanism 33 to achieve lifting and lowering. The lifting mechanism 33 is a lifting plate that slides with guide rails at both ends via sliders. The lifting plate can be connected to the output of a drive motor to achieve lifting and lowering. The identification module is located in the middle of the lifting plate, and its maximum lifting height is greater than that of the tightening shaft. A buffer element 32, such as a spring, is provided at the bottom of the guide rails to cushion the lifting plate. The identification module 34 is used to identify the distribution positions of bolts on the axle ends of different bogie models, achieving accurate alignment between the axle end bolt tightening machine and the bolts. The identification module 34 has a camera to acquire position information in real time.

[0054] Once the wheelset reaches the wheelset support rail, the identification module 34 descends to obtain the position information of the wheelset axle end and feeds the information back to the axle end bolt tightening machine. The controller then controls the axle end bolt tightening machine 2 to tighten the wheelset axle end bolts according to the position information.

[0055] like Figure 2 and Figure 3 As shown, a calibration stand bracket 15 is provided at the end of the support section for mounting the calibration mechanism 7. The calibration mechanism includes a portable bracket 73, with simulated bolts 71 and calibration sensors 74 connected by threads on both sides of the portable bracket 73. Two sets of reaction force devices 72 are provided on the top of the simulated bolts. The arrangement of the simulated bolts 71 and the reaction force devices 72 is the same as the arrangement of the bolts at the wheelset axle end. During torque calibration, the tightening shaft to be calibrated is inserted into the simulated bolt, and the other two tightening shafts are inserted into the reaction force devices for calibration of the tightening shafts. Similarly, the same operation is performed to calibrate the other two tightening shafts.

[0056] In this embodiment, the support frame is installed in the pit, and the axle end bolt tightening machine is slidably installed on the support frame. Through the cooperation of the axle end bolt tightening machine, the bolt identification mechanism, and the lifting and positioning mechanism, the position of the axle end bolt is automatically identified and aligned, thereby realizing the automation and unmanned operation of the wheelset axle end bolt tightening operation without human intervention, improving processing efficiency, and saving space by eliminating the need for truss tracks.

[0057] Example 2

[0058] In a typical embodiment of the present invention, an automatic tightening method for wheelset axle end bolts is provided, referencing... Figures 1-8 As shown, the automatic fastening device for wheelset axle end bolts in Embodiment 1 specifically includes the following steps:

[0059] Once the wheelset reaches the wheelset support rail 8, the lifting and positioning mechanism 4 lifts the wheelset via V-blocks. The clamping cylinder 52 in the clamping mechanism 5 actuates, clamping the wheel disc 9 via the sliding of the first clamping block 51 and the second clamping block 53. Then, the identification module 34 descends, identifies the position information of the wheelset axle end, and feeds this information back to the axle end bolt tightening machine 2. The identification module 34 rises, and the axle end bolt tightening machine 2, under the control of the controller, moves along the slide rail 12, tightening the axle end bolts according to the position information. Afterwards, the clamping mechanism resets, the V-blocks reset, the wheelset is supported by the wheelset support rail 8, and the AGV trolley moves the wheelset off the support rail. Then, the bolts of the next wheelset are tightened. The entire process requires no manual intervention. Through the cooperation of the axle end bolt tightening machine, the bolt identification mechanism, and the lifting and positioning mechanism, the automatic identification and alignment of the axle end bolts are achieved, thus realizing the automation and unmanned operation of the wheelset axle end bolt tightening.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic fastening device for wheelset axle end bolts, characterized in that, include: The support frame is installed in the pit, with support sections at both ends and a pair of wheel set support rails in the middle. A mounting plate is slidably connected to the support sections. A shaft end bolt tightening machine is mounted on the mounting plate and rotatably connected to it via a control motor and a slewing support. The shaft end bolt tightening machine contains a diameter-changing mechanism connected to a tightening shaft. Two sets of support sections are positioned close to each other, with a bolt recognition mechanism at one end. This mechanism includes a liftable recognition module. Based on the wheel set shaft end bolt position information obtained from the recognition module, the shaft end bolt tightening machine rotates along the horizontal axis to align with the shaft end bolts using the control motor and slewing support. The top of the support is connected to the mounting plate via a slide rail. The mounting plate moves along the slide rail via a drive mechanism. The shaft end bolt tightening machine includes a tightening box, which is rotatably engaged with a first support frame and a second support frame at both ends that are mounted on the mounting plate. The end of the tightening box is connected to a control motor via a slewing support on the second support frame. The control motor drives the tightening box to rotate along the horizontal axis on the mounting plate via the slewing support. The two sets of linked lifting and positioning mechanisms include V-blocks located on the side of the two sets of support sections that are close to each other. The V-blocks support and lift the ends of the wheelset. The clamping mechanism includes a clamping bracket, on which a first clamping block and a second clamping block are slidably disposed, the first clamping block and the second clamping block extending above the wheelset support rail to clamp the wheel disc.

2. The automatic fastening device for wheelset axle end bolts according to claim 1, characterized in that, The wheelset support rail is located close to the support part, and the lifting and positioning mechanism is located between the wheelset support rail and the support part. The wheelset support rail is perpendicular to the support frame and is used to connect with the wheelset's conveyor rail.

3. The automatic fastening device for wheelset axle end bolts according to claim 2, characterized in that, The wheelset support rail is connected to a check block via a rotating shaft. The center of gravity of the check block is offset relative to the rotating shaft. The check block achieves contact with the passing wheelset by rotating and limiting its position.

4. The automatic fastening device for wheelset axle end bolts according to claim 1, characterized in that, The bolt identification mechanism includes an inverted U-shaped identification module frame fixed to the support. The identification module is installed on the identification module frame via a lifting mechanism, and the maximum lifting height of the identification module is greater than that of the tightening shaft.

5. The automatic fastening device for wheelset axle end bolts according to claim 1, characterized in that, The clamping mechanism includes a clamping bracket located at the bottom of the wheelset support rail. The bottom ends of the first clamping block and the second clamping block are slidably engaged with the rail on the bottom surface of the clamping bracket. The clamping cylinder is fixed on the first clamping block, and its output end passes through the first clamping block and is connected to the second clamping block.

6. The automatic fastening device for wheelset axle end bolts according to claim 2, characterized in that, The lifting and positioning mechanism includes a positioning frame, a lifting machine is provided between the two wheel support rails, the lifting machine is connected to the V-block on the positioning frame through a coupling and a reducer, and the positioning frame is provided with a guide rod to assist in the lifting and lowering of the positioning V-block.

7. The automatic fastening device for wheelset axle end bolts according to claim 1, characterized in that, The end of the support is provided with a calibration platform bracket for installing a calibration mechanism. The calibration mechanism includes a portable bracket, and on both sides of the portable bracket are simulated bolts and calibration sensors connected by threads. The top of the simulated bolts is provided with a reaction device.

8. A method for automatically tightening bolts at the end of a wheelset axle, characterized in that, The automatic wheelset axle end bolt tightening device as described in any one of claims 1-7 includes the following steps: Once the wheelset reaches the wheelset support rail, the lifting and positioning mechanism lifts the wheelset via V-blocks, and the clamping mechanism clamps the wheel disc via first and second clamping blocks. Then, the identification module descends, identifies the position information of the wheelset axle end, and feeds this information back to the axle end bolt tightening machine. The identification module rises, and the control motor drives the tightening box to rotate at a set angle along the horizontal axis on the mounting plate via a slewing support to automatically align the axle end bolts. The axle end bolt tightening machine then tightens the axle end bolts. The clamping mechanism resets, the V-blocks reset, the wheelset is supported by the wheelset support rail, and the AGV trolley moves the wheelset off the wheelset support rail.

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