Pressurizing device and track walking trolley using the same

Abstract

The pressurizing device and the track walking trolley using the device are provided with an eccentric swing pressurizing mechanism solution compatible with straight tracks and curved tracks, which realizes the acceleration range increase in the high-speed walking state without providing additional driving wheel pressure, and achieves the design purposes of reducing the self-weight of the pressurizing device, effectively compensating the pressurizing wheel center deviation value when passing the curved track, and ensuring that the axial center of the pressurizing wheel always coincides with the vertical center of the curved track. The device comprises a base part sleeve, an eccentric swing arm part sleeve is vertically arranged on the base part sleeve, a support part sleeve is vertically arranged on the eccentric swing arm part sleeve at a point axially arranged with the base part sleeve, one end of a press wheel supporting rocker arm is axially arranged on the support part sleeve, the other end of the press wheel supporting rocker arm is axially arranged on a press wheel part sleeve, one end of an anti-tilt connecting rod part sleeve is axially arranged on the support part sleeve, the other end of the anti-tilt connecting rod part sleeve is axially arranged on a guide wheel part sleeve, and the lines between the two adjacent points of the two end axial points of the press wheel supporting rocker arm and the anti-tilt connecting rod part sleeve jointly form a parallelogram.

Description

Technical Field

[0001] This invention relates to a pressurization device for a high-speed track-moving trolley, belonging to the field of logistics warehousing and automation control. Background Technology

[0002] Currently, the logistics and warehousing industry typically uses automated warehouses for goods storage and inbound management. The common carrier for transporting and picking up goods is a rail-mounted trolley. Automated and intelligently controlled rail-mounted trolleys are characterized by stable and high-speed operation.

[0003] With the continuous upgrading of intelligent control technology, track-mounted trolleys need to significantly increase their operating speed to meet the demands of high-speed transportation. Currently, the acceleration of track-mounted trolleys is limited by the friction between the drive wheels and the track. The maximum acceleration achievable is solely achieved by increasing the trolley's weight, which not only increases wear on the track but also consumes significant energy, failing to meet current energy-saving and environmentally friendly requirements. Furthermore, due to the inevitable slippage between the drive wheels and the track, it is difficult to further improve the travel acceleration. A commonly used stacker crane design involves directly pressing the pressure wheels against both sides of the track. However, this solution, while maintaining power output, is only applicable to straight tracks and is clearly unsuitable for curved tracks.

[0004] In view of the above, this patent application is hereby filed. Summary of the Invention

[0005] The pressurizing device and the track-walking trolley using the device described in this invention address the problems existing in the prior art by proposing an eccentric swing pressurizing mechanism solution compatible with both straight and curved tracks. It can apply positive pressure perpendicular to the tangent direction of the track contact point through adjustable preload spring force, achieving acceleration extension in high-speed travel without the need to provide additional pressure to the drive wheel. This achieves the design objectives of reducing the self-weight of the pressurizing device, effectively compensating for the center deviation of the pressurizing wheel when crossing curved tracks, and ensuring that the axial center of the pressurizing wheel always coincides with the vertical center of the curved track.

[0006] To achieve the above design objectives, the pressurizing device includes a base sleeve, on which an eccentric swing arm sleeve is mounted vertically; at the far end of the support sleeve, which is mounted vertically, the eccentric swing arm sleeve is mounted vertically; one end of the pressure roller support rocker arm is mounted on the support sleeve, and the other end is mounted on the pressure roller sleeve, with the pressure roller in the pressure roller sleeve pressing against the rail surface; one end of the anti-tilt linkage sleeve is mounted on the support sleeve, and the other end is mounted on the guide wheel sleeve, with the guide wheel in the guide wheel sleeve pressing against the side of the rail; at the two ends of the pressure roller support rocker arm and the anti-tilt linkage sleeve, the lines connecting adjacent points together form a parallelogram.

[0007] Furthermore, the base sleeve has a fixing seat, on which a vertically extending base shaft with an annular step is connected, and a base shaft retaining spring is provided at the top end of the base shaft.

[0008] Furthermore, the eccentric swing arm sleeve has an eccentric swing arm, on which two sets of parallel first eccentric shaft holes for connecting the base sleeve and a second eccentric shaft hole for connecting the support sleeve are provided; the base shaft is sleeved in the first eccentric shaft hole, and a pair of angular contact ball bearings is provided between the base shaft and the inner cavity of the first eccentric shaft hole, and the bearing seat is vertically sealed to the top of the base shaft by a swing arm bolt group; a pair of angular contact ball bearings is provided in the second eccentric shaft hole, and an eccentric shaft retaining spring is sealed at the top of the inner cavity of the second eccentric shaft hole.

[0009] Furthermore, the support sleeve has a base, and a base shaft is formed at the bottom of the base. The base shaft is fixed to the angular contact ball bearing in the second eccentric shaft hole. A base shaft retaining spring is provided at the end of the base shaft. Two sets of parallel supports are fixedly connected to the top of the base by a set of support bolts. A set of support shafts is connected between the two sets of supports. Each set of supports is provided with a shaft hole for shaft connection of the pressure roller support rocker arm and the anti-tilt linkage sleeve.

[0010] Furthermore, the anti-tilt linkage sleeve has a connecting rod, with a set of shaft holes at both ends of the connecting rod. A set of connecting rod shafts passes through each set of shaft holes, and two sets of anti-loosening nuts and flat washers for sealing the shaft holes at the ends of the connecting rods are symmetrically arranged on each set of connecting rod shafts. The two sets of connecting rod shafts are respectively mounted on the support sleeve and the guide wheel sleeve.

[0011] Furthermore, the pressure wheel sleeve has a pressure wheel shaft and a pressure wheel that is axially sleeved on the pressure wheel shaft through a pressure wheel bearing. Two sets of pressure wheel shaft retaining rings are symmetrically arranged on both sides of the pressure wheel and on the pressure wheel shaft.

[0012] Furthermore, the guide wheel sleeve includes two sets of guide wheel supports with a T-shaped integral design. A set of guide wheels is vertically mounted on the top two sides of each guide wheel support. The guide wheels pass through guide wheel bearings and are fitted onto an eccentric guide wheel shaft. Guide wheel retaining rings are encapsulated on the outside of the guide wheel bearings and on the eccentric guide wheel shaft. A pair of locking nuts is provided on the eccentric guide wheel shaft to fix it to the bottom of the guide wheel support. After the guide wheels are installed on the eccentric guide wheel shaft, the axial center line of the guide wheels is parallel to the axis of the portion of the eccentric guide wheel shaft that passes through the guide wheel support, but the two are not on the same straight line. Two sets of through holes are provided on the side of each guide wheel support for mounting the pressure wheel support rocker arm, connecting rod, and pressure wheel shaft, respectively. The pressure wheel shaft from the inside out and the pressure wheel support rocker arm from the outside in are mounted in the same through hole, and two sets of pressure wheel shaft retaining rings are respectively encapsulated on both sides of the through hole.

[0013] Furthermore, one end of the pressure spring sleeve is located at the pivot point between the pressure roller support rocker arm and the pressure roller sleeve, and the pressure spring sleeve is laterally fixedly connected to the support sleeve.

[0014] Furthermore, the pressure spring sleeve has a spring support rod, the side of which is connected to a support rod shaft. The support rod shaft is mounted on the support sleeve, and a shaft retaining ring is provided at the shaft end of the support rod shaft. Two sets of locking nuts are provided on one side of the support rod shaft and on the spring support rod, and the two sets of locking nuts are encapsulated in the pressure wheel sleeve from both sides. A compression spring and an adjusting nut are sleeved on one side of the support rod shaft and on the spring support rod. The adjusting nut pre-compresses and limits the compression spring from the outside. Through holes for connecting the spring support rod are provided at both ends of the pressure wheel shaft 61.

[0015] This application also proposes a novel track-mounted trolley having the aforementioned pressurization device.

[0016] In summary, the pressurization device described in this application and the track-mounted trolley using the device have the following advantages:

[0017] 1. The pressurization device proposed in this application does not require a dedicated drive mechanism for the pressurization wheel. At the same time, the overall structure optimization is conducive to weight reduction design. Therefore, it has the characteristics of low noise, low wear and low energy consumption during use.

[0018] 2. This application is compatible with both straight and curved rails, making it highly applicable.

[0019] 3. This application adopts a design with two rotating shafts. When the device passes through a curved rail, it can effectively compensate for the deviation of the center of the pressure wheel, thereby ensuring that the axial center of the pressure wheel always coincides with the vertical center of the curved rail, which is conducive to maintaining the high speed and stable state of the track-walking trolley when passing through curves.

[0020] 4. This application adopts a flexible design for the pressure roller, which can be adjusted by the preload spring to ensure the balanced contact pressure between the pressure roller and the track, and at the same time helps to reduce vibration when passing through curved tracks.

[0021] 5. The two-sided guide wheel mechanism adopted in this application can effectively ensure that the pressure wheel does not deviate in angle when passing through the curved rail at high speed, that is, it ensures that the travel direction of the pressure wheel is always in the tangential direction of the contact point with the curved rail.

[0022] 6. This application adopts a parallelogram configuration in the connection and torque distribution of the pressure roller support rocker arm and anti-tilt linkage. Thus, even when there is a certain height deviation between the guide wheel, the pressure wheel and the mounting base plane of the pressure device, the guide wheel and the pressure wheel can still adaptively maintain parallelism, which helps to implement the pressure acceleration design of this application. Attached Figure Description

[0023] The present invention will now be further described with reference to the following figures.

[0024] Figure 1 This is a schematic diagram of the pressurization device described in this application;

[0025] Figure 1-1 yes Figure 1 A side view of the structure shown;

[0026] Figure 2 This is a structural diagram of the base sleeve;

[0027] Figure 3 This is a schematic diagram of the eccentric swing arm sleeve.

[0028] Figure 4 This is a structural schematic diagram of the support sleeve;

[0029] Figure 5 This is a structural schematic diagram of the anti-rollover linkage sleeve;

[0030] Figure 6 This is a schematic diagram of the pressure roller sleeve;

[0031] Figure 7 This is a structural schematic diagram of the guide wheel sleeve;

[0032] Figure 8 This is a schematic diagram of the structure of the pressure spring sleeve;

[0033] Figure 8-1 yes Figure 8 Longitudinal cross-sectional view of the structure shown;

[0034] Figure 9 This is a schematic diagram of a track-moving trolley using the pressurization device described in this application passing through a curved track;

[0035] In the above attached figures, 1-base sleeve, 2-eccentric swing arm sleeve, 3-support sleeve, 4-pressure roller support rocker arm, 5-anti-tilt linkage sleeve, 6-pressure roller sleeve, 7-guide wheel sleeve, 8-pressure spring sleeve, 9-curved rail;

[0036] 11-Fixed base, 12-Bolt assembly, 13-Base shaft retaining ring, 14-Base shaft;

[0037] 21-Eccentric rocker arm, 22-Bearing housing, 23-Angular contact ball bearing pair, 24-Eccentric shaft retaining ring, 25-Rocker arm bolt assembly, 26-First eccentric shaft hole, 27-Second eccentric shaft hole;

[0038] 31-Base, 32-Base shaft retaining ring, 33-Support, 34-Support shaft, 35-Support bolt assembly, 36-Base shaft;

[0039] 51-Connecting rod, 52-Connecting rod shaft, 53-Anti-loosening nut, 54-Flat washer;

[0040] 61-Pressure wheel shaft, 62-Pressure wheel, 63-Pressure wheel bearing, 64-Pressure wheel shaft snap ring pair, 65-Shaft end through hole;

[0041] 71-Guide wheel support, 72-Eccentric guide wheel shaft, 73-Guide wheel, 74-Guide wheel bearing, 75-Guide wheel retaining ring, 76-Pair of locking nuts;

[0042] 81-Spring support rod, 82-Support rod pivot, 83-Compression spring, 84-Pivot snap ring, 85-Adjusting nut, 86-Locking nut. Detailed Implementation

[0043] Example 1, such as Figure 1 As shown, this application proposes a novel pressurizing device for the drive wheel of a traveling trolley running on a track. The device includes a base sleeve 1 for mounting on the traveling trolley, an eccentric swing arm sleeve 2 provided on the base sleeve 1 with a vertical axis; and a support sleeve 3 provided on the eccentric swing arm sleeve 2 with a vertical axis at the far end of the support sleeve 1 with a axial point.

[0044] One end of the pressure roller support rocker arm 4 is mounted on the support sleeve 3, and the other end is mounted on the pressure roller sleeve 6. The pressure roller 62 in the pressure roller sleeve 6 is pressed against the rail surface (upper rail surface and / or lower rail surface).

[0045] One end of the anti-tilt linkage sleeve 5 is shafted to the support sleeve 3, and the other end is shafted to the guide wheel sleeve 7. The guide wheel 73 in the guide wheel sleeve 7 is pressed against the side of the track (one side or both sides).

[0046] In the two-end shaft setting points of the pressure roller support rocker arm 4 and the anti-tilting connecting rod sleeve 5, the connecting lines between adjacent two points together form the same parallelogram.

[0047] One end of the pressure spring sleeve 8 is located at the pivot point between the pressure roller support rocker arm 4 and the pressure roller sleeve 6, and the pressure spring sleeve 8 is laterally fixed to the support sleeve 3.

[0048] like Figure 2 As shown, the base sleeve 1 has a fixed seat 11, which is used to be fixedly connected to the side of the track-moving trolley adjacent to the drive wheel (not shown in the figure) by bolt group 12. A vertically extending base shaft 14 with an annular step is formed on the fixed seat 11 by an integral molding process. A base shaft retaining spring 13 is provided at the top of the base shaft 14.

[0049] like Figure 3As shown, the eccentric swing arm sleeve 2 has an eccentric swing arm 21, on which two sets of parallel first eccentric shaft holes 26 for connecting the base sleeve 1 and second eccentric shaft holes 27 for connecting the support sleeve 3 are provided.

[0050] The base shaft 14 is fitted into the first eccentric shaft hole 26. A pair of angular contact ball bearings 23 is provided between the base shaft 14 and the inner cavity of the first eccentric shaft hole 26. The bearing seat 22 is vertically encapsulated on the top of the base shaft 14 by the rocker arm bolt group 25. The bearing seat 22 and the base shaft retaining ring 13 together realize the vertical limitation of the angular contact ball bearing pair 23. The base shaft 14 is fitted into the angular contact ball bearing pair 23 from bottom to top, and the outer end is encapsulated by the base shaft retaining ring 13.

[0051] A set of angular contact ball bearings 23 is provided in the second eccentric shaft hole 27, and an eccentric shaft retaining ring 24 is encapsulated at the top of the inner cavity of the second eccentric shaft hole 27.

[0052] like Figure 4 As shown, the support sleeve 3 has a base 31, and a base shaft 36 is formed by integral molding at the bottom vertical direction of the base 31. The base shaft 36 is fixed in the angular contact ball bearing pair 23 of the second eccentric shaft hole 27. A base shaft retaining spring 32 is provided at the end of the base shaft 36.

[0053] Two sets of parallel supports 33 are fixedly connected to the top of the base 31 by a set of support bolts 35. A set of support shafts 34 is connected between the two sets of supports 33. Each set of supports 33 is provided with shaft holes for shaft connection of the pressure roller support rocker arm 4 and the anti-tilting connecting rod sleeve 5.

[0054] like Figure 9 As shown, based on the above-mentioned structural design of the eccentric swing arm sleeve 2, the base sleeve 1 and the support sleeve 3 are respectively arranged vertically and parallel to each other on the double shaft. The two can rotate freely around the shaft, thereby effectively ensuring that the pressurizing device as a whole can compensate for the deviation of the pressurizing wheel sleeve 6 when passing through the curved rail, and ensuring that the radial center of the pressurizing wheel 62 is always on the center of the curved rail.

[0055] like Figure 5 As shown, the anti-tilt linkage sleeve 5 has a connecting rod 51, and a set of shaft holes are respectively provided at both ends of the connecting rod 51. A set of connecting rod shafts 52 are inserted through each set of shaft holes. Two sets of anti-loosening nuts 53 and flat washers 54 for sealing the shaft holes at the ends of the connecting rod 51 are symmetrically provided on each set of connecting rod shafts 52. The two sets of connecting rod shafts 52 are respectively mounted on the support 33 and the guide wheel sleeve 7.

[0056] like Figure 6As shown, the pressure wheel sleeve 6 has a pressure wheel shaft 61 and a pressure wheel 62 that is axially sleeved on the pressure wheel shaft 61 through a pressure wheel bearing 63. Two sets of pressure wheel shaft retaining ring pairs 64 are symmetrically arranged on both sides of the pressure wheel 62 and on the pressure wheel shaft 61.

[0057] At both ends of the pressure wheel shaft 61, there are shaft end through holes 65 for passing through and connecting the pressure spring sleeve 8;

[0058] like Figure 7 As shown, the guide wheel sleeve 7 includes two sets of guide wheel supports 71 with a T-shaped integral shape. A set of guide wheels 73 is provided on the top of each side of the guide wheel support 71, which is perpendicular to the ground axis. The guide wheels 73 are sleeved on the eccentric guide wheel shaft 72 through the guide wheel bearing 74. A guide wheel retaining ring 75 is encapsulated on the outside of the guide wheel bearing 74 and on the eccentric guide wheel shaft 72. A pair of locking nuts 76 are provided on the eccentric guide wheel shaft 72 to fix it to the bottom of the guide wheel support 71.

[0059] After the guide wheel 73 is installed on the eccentric guide wheel shaft 72, the axial center line of the guide wheel 73 is parallel to the part of the axis of the eccentric guide wheel shaft 72 that passes through the guide wheel support 71, and the two are not on the same straight line. That is, the two sets of guide wheels 73 are respectively connected to the vertical top of the guide wheel support 71 in a symmetrical and outwardly offset eccentric shaft configuration.

[0060] Two sets of through holes are provided on the side of each set of guide wheel supports 71 for axially mounting the pressure wheel support rocker arm 4, connecting rod 51 and pressure wheel shaft 61 respectively; wherein, the pressure wheel shaft 61 is mounted from the inside to the outside and the pressure wheel support rocker arm 4 is mounted from the outside to the inside in the same through hole, and the two sets of pressure wheel shaft retaining spring pairs 64 are respectively encapsulated on both sides of the through hole;

[0061] The pressure roller support rocker arm 4 has one end shafted to the support shaft 34 and the other end shafted to the pressure roller shaft 61, so that the pressure roller sleeve 6 can float up and down around the axis of the pressure roller support rocker arm 4 and the support shaft 34.

[0062] The anti-tilt linkage sleeve 5 has connecting rod shafts 52 at both ends respectively mounted on the support 33 and the guide wheel support 71, so the connecting rod 51 and the connecting rod shaft 52 can rotate freely relative to each other.

[0063] The guide wheel sleeve 7 has a guide wheel support 71 with a pressure wheel shaft 61 and a connecting rod 51 respectively passing through the shaft. Thus, the support 33 and the shaft points set on the guide wheel support 71 together form a parallelogram mechanism. No matter how the pressure wheel sleeve 6 floats up and down, the guide wheel support 71 will not tilt or twist, effectively ensuring the stability and tightness of the pressure wheel 62 pressing against the rail surface and the guide wheel 73 pressing against the side of the rail.

[0064] like Figure 8As shown, the pressure spring sleeve 8 has a spring support rod 81. The side of the spring support rod 81 is integrally formed with a support rod shaft 82 perpendicular to it. The support rod shaft 82 is sleeved and installed in the side shaft hole of the support 33. A shaft retaining ring 84 for sealing the side shaft hole of the support 33 is provided at the shaft end of the support rod shaft 82.

[0065] Two sets of locking nuts 86 are provided on one side of the support rod shaft 82 and on the spring support rod 81. The two sets of locking nuts 86 enclose the shaft end through hole 65 of the pressure wheel shaft 61 from both sides.

[0066] A compression spring 83 and an adjusting nut 85 are fitted on the spring support rod 81 on one side of the support rod shaft 82. The adjusting nut 85 pre-compresses and limits the compression spring 83 from the outside.

[0067] Since the compression spring 83 is clamped and pressed between the support rod shaft 82 and the adjusting nut 85, the elastic compression of the compression spring 83 can be preset by adjusting the position of the adjusting nut 85 on the spring support rod 81, thereby indirectly adjusting the contact pressure between the pressure roller 62 and the rail surface, further improving the stability of the pressure roller 62 pressing against the rail surface and preventing it from moving around when the rail trolley is running at high speed.

[0068] In summary, this application also proposes a novel track-mounted trolley with the aforementioned pressurization device structural design.

[0069] As described above, the embodiments given in conjunction with the accompanying drawings are merely preferred solutions for achieving the objectives of this invention. Those skilled in the art can draw inspiration from this and directly derive other alternative structures that conform to the design concept of this invention. Other structural features derived therefrom should also fall within the scope of the solutions described in this invention.

Claims

1. A pressurizing device, characterized in that: It includes a base sleeve, on which an eccentric swing arm sleeve is provided vertically to the ground axis; at the far end of the support sleeve, which is located vertically to the ground axis, the eccentric swing arm sleeve is provided. One end of the pressure roller support rocker arm is mounted on the support sleeve, and the other end is mounted on the pressure roller sleeve. The pressure roller in the pressure roller sleeve is pressed against the rail surface of the track. One end of the anti-tilt linkage sleeve is mounted on the support sleeve, and the other end is mounted on the guide wheel sleeve. The guide wheel in the guide wheel sleeve is pressed against the side of the track. In the two-end shaft setting points of the pressure roller support rocker arm and the anti-tilt linkage sleeve, the line connecting two adjacent points together forms a parallelogram; The anti-tilt linkage sleeve has a connecting rod, and a set of shaft holes are respectively provided at both ends of the connecting rod. A set of connecting rod shafts is inserted in each set of shaft holes. Two sets of anti-loosening nuts and flat washers for sealing the shaft holes at the ends of the connecting rods are symmetrically provided on each set of connecting rod shafts. The two sets of connecting rod shafts are respectively mounted on the support sleeve and the guide wheel sleeve. The pressure wheel sleeve has a pressure wheel shaft and a pressure wheel that is axially sleeved on the pressure wheel shaft through a pressure wheel bearing. Two sets of pressure wheel shaft retaining rings are symmetrically arranged on both sides of the pressure wheel and on the pressure wheel shaft. One end of the pressure spring sleeve is located at the pivot point between the pressure roller support rocker arm and the pressure roller sleeve, and the pressure spring sleeve is laterally fixed to the support sleeve; The pressure spring sleeve has a spring support rod, the side of which is connected to a support rod shaft. The support rod shaft is mounted on the support sleeve, and a shaft retaining ring is provided at the shaft end of the support rod shaft. Two sets of locking nuts are provided on one side of the support rod shaft and on the spring support rod. The two sets of locking nuts are encapsulated in the pressure wheel sleeve from both sides. A compression spring and an adjusting nut are fitted on one side of the support rod shaft and on the spring support rod. The adjusting nut pre-compresses and limits the compression spring from the outside. Two through holes are provided at both ends of the pressure wheel shaft for connecting the spring support rod.

2. The pressurizing device according to claim 1, characterized in that: The base sleeve has a fixed seat, on which a vertically extending base shaft with an annular step is connected, and a base shaft retaining spring is provided at the top of the base shaft.

3. The pressurizing device according to claim 2, characterized in that: The eccentric swing arm sleeve has an eccentric swing arm, on which two sets of parallel first eccentric shaft holes for connecting the base sleeve and second eccentric shaft holes for connecting the support sleeve are provided. The base shaft is fitted into the first eccentric shaft hole. A pair of angular contact ball bearings is provided between the base shaft and the inner cavity of the first eccentric shaft hole. The bearing housing is vertically encapsulated on the top of the base shaft by a rocker arm bolt group. A pair of angular contact ball bearings is provided in the second eccentric shaft hole, and an eccentric shaft retaining ring is encapsulated at the top of the inner cavity of the second eccentric shaft hole.

4. The pressurizing device according to claim 3, characterized in that: The support sleeve has a base, and a base shaft is formed at the bottom of the base. The base shaft is fixed to the angular contact ball bearing in the second eccentric shaft hole. A base shaft retaining spring is provided at the end of the base shaft. Two sets of parallel supports are fixedly connected to the top of the base by a set of support bolts. A support shaft is connected between the two sets of supports. Each set of supports is provided with a shaft hole for connecting the pressure roller support rocker arm and the anti-tilt connecting rod sleeve.

5. The pressurizing device according to claim 1, characterized in that: The guide wheel sleeve includes two sets of guide wheel supports with a T-shaped integral shape. A set of guide wheels is provided on the top of each side of the guide wheel support, which is perpendicular to the ground axis. The guide wheels are sleeved on the eccentric guide wheel shaft through guide wheel bearings. A guide wheel retaining ring is encapsulated on the outside of the guide wheel bearing and on the eccentric guide wheel shaft. A pair of locking nuts are provided on the eccentric guide wheel shaft to fix it to the bottom of the guide wheel support. After the guide wheel is installed on the eccentric guide wheel shaft, the axial center line of the guide wheel is parallel to the axis of the part of the eccentric guide wheel shaft that passes through the guide wheel support, and the two are not on the same straight line; Two sets of through holes are provided on the side of each set of guide wheel supports, which are used to support the rocker arm, connecting rod and pressure wheel shaft respectively; The pressure wheel shaft from the inside out and the pressure wheel support rocker arm from the outside in are located in the same through hole, and two sets of pressure wheel shaft retaining rings are respectively encapsulated on both sides of the through hole.

6. A track-moving trolley, characterized in that: Includes the pressurizing device as described in any one of claims 1 to 5.

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