Rail walking device and crane

Abstract

The utility model relates to the technical field of engineering machinery, and discloses a track walking device and a crane. The pair of mutually independent wheel assemblies are rotationally connected with the device main body, and the pair of wheel assemblies are distributed in the width direction of the device main body at intervals and used for driving the device main body to walk along the annular track; and the driving mechanism is in transmission connection with one wheel assembly, and the driving mechanism is used for driving one wheel assembly to rotate. The pair of wheel assemblies are independently arranged, the driving mechanism drives one wheel assembly to rotate, the other wheel assembly rotates along with the wheel assembly, and therefore the wheel set on one side of the walking set is the driving wheel set, the wheel set on the other side of the walking set is the driven wheel set, the difference between inner wheels and outer wheels is eliminated, and the phenomenon that the wheels slip on the track is avoided; abrasion to wheels and rails is reduced, and the service life of the wheels and the rails is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to a track-walking device and a crane. Background Technology

[0002] With the increasing demands for lifting capacity in fields such as petrochemicals, nuclear power, and marine engineering, traditional cranes are finding it increasingly difficult to meet the requirements for large lifting weights. Therefore, ring track cranes have gradually become important ultra-large lifting equipment. These cranes rely on a traveling trolley that runs on a circular track, which is driven by a traveling mechanism. The most common type of traveling mechanism is a wheeled traveling mechanism, which can be further divided into front and rear dual-wheel traveling mechanisms and front and rear four-wheel traveling mechanisms.

[0003] Currently, in the four-wheel drive system, the front and rear wheels are each connected by a main shaft. By driving the main shaft to rotate, the wheels at both ends of the main shaft can rotate synchronously, thus enabling movement on a circular track.

[0004] However, when turning on a circular track, the speed difference between the inner and outer wheels causes the wheels to slip, which in turn requires increased driving force and increases the wear on the wheels and the track. Utility Model Content

[0005] This utility model provides a track-walking device and a crane to solve or improve the problem in related technologies where, when the walking group turns on a circular track, there is a speed difference between the inner and outer wheels, which causes wheel slippage, thus requiring increased driving force and increasing wear on the wheels and track.

[0006] In a first aspect, this utility model provides a track-walking device, comprising:

[0007] Main body of the device;

[0008] A pair of independent wheel assemblies are rotatably connected to the main body of the device, and the pair of wheel assemblies are spaced apart along the width direction of the main body of the device. The pair of wheel assemblies are used to drive the main body of the device to move along the circular track.

[0009] A drive mechanism is connected to one of the wheel assemblies for driving one of the wheel assemblies to rotate.

[0010] In one alternative embodiment, the wheel assembly includes:

[0011] The axle is rotatably connected to the main body of the device;

[0012] A wheel is mounted on the axle and is capable of traveling along the circular track;

[0013] A pair of bearings are respectively disposed on both sides of the wheel, and both bearings are disposed between the wheel axle and the main body of the device, so that the wheel axle and the main body of the device are rotatably connected.

[0014] In one alternative embodiment, the bearing is a K-type self-aligning bearing.

[0015] In one alternative implementation, it further includes:

[0016] A pair of oppositely arranged arc-shaped mounting seats, the pair of arc-shaped mounting seats can be detachably connected, one of the arc-shaped mounting seats is disposed on the main body of the device, and the pair of arc-shaped mounting seats are used to clamp the bearing.

[0017] In one alternative implementation, it further includes:

[0018] A pin is provided on the connecting surfaces of a pair of arc-shaped mounting seats, and the pin is inserted into the first mounting hole.

[0019] In one alternative implementation, it further includes:

[0020] The inner wall of the arc-shaped mounting base and the outer wall of the bearing are provided with the groove and the other is provided with the protrusion, and the protrusion is engaged in the groove.

[0021] In one alternative embodiment, the wheel assembly comprises at least two pairs, with multiple pairs of wheel assemblies spaced apart along the length of the device body.

[0022] In one alternative implementation, it further includes:

[0023] At least one guide wheel is rotatably disposed on one side of the device body near the annular track, and a plurality of guide wheels are spaced apart along the length of the device body, the guide wheels being adapted to roll on the side of the annular track.

[0024] In one alternative implementation, it further includes:

[0025] A connecting plate is disposed on the side of the main body of the device near the annular track, and multiple guide wheels are rotatably connected to the connecting plate.

[0026] Secondly, this utility model also provides a crane, including a track-traveling device as described in any of the above claims.

[0027] The track walking device provided by this utility model arranges a pair of wheel assemblies independently. The drive mechanism drives one wheel assembly to rotate, and the other wheel assembly rotates accordingly, so as to achieve walking on a circular track. Thus, one side of the walking group is the driving wheel assembly and the other side is the driven wheel assembly, which eliminates the difference between the inner and outer wheels, avoids the phenomenon of wheels slipping on the track, reduces the wear on the wheels and track, and extends their service life. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the track walking device according to an embodiment of the present utility model;

[0030] Figure 2 This is an exploded view of the track walking device according to an embodiment of the present utility model;

[0031] Figure 3 This is a schematic diagram illustrating the cooperation between the guide wheel and the annular track in an embodiment of this utility model;

[0032] Figure 4 This is a front view of the track walking device according to an embodiment of the present utility model;

[0033] Figure 5 for Figure 4 Sectional view of AA;

[0034] Figure 6 for Figure 4 Partial schematic diagram of the B direction;

[0035] Figure 7 This is a schematic diagram of the structure of one wheel assembly according to an embodiment of the present utility model;

[0036] Figure 8 This is a cross-sectional view of one of the wheel assemblies according to an embodiment of the present utility model;

[0037] Figure 9 This is a schematic diagram of another wheel assembly according to an embodiment of the present utility model;

[0038] Figure 10 This is a cross-sectional view of another wheel assembly according to an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Main body of the device; 2. Wheel assembly; 201. Axle; 2011. Connecting part; 202. Wheel; 203. Bearing; 204. Bearing sleeve; 205. Bushing; 206. Locking nut; 207. First end cover; 208. Adjusting washer; 209. Second end cover; 210. Flat key; 211. Third end cover; 212. First sealing ring; 213. Washer; 214. Second sealing ring; 215. Fourth end cover; 3. Drive mechanism; 301. Reducer; 4. Arc-shaped mounting base; 401. First mounting hole; 5. Pin; 6. Slot; 7. Protrusion; 8. Guide wheel; 9. Connecting plate; 901. Second mounting hole; 902. Third mounting hole; 10. Connecting shaft; 11. First track; 12. Second track; 13. Fastener. Detailed Implementation

[0041] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] In the description of this utility model, "a plurality of" means two or more. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] The following combination Figures 1 to 10 This describes the track-walking device and crane according to embodiments of the present utility model.

[0046] According to an embodiment of the present invention, a track-walking device suitable for traveling on a circular track is provided, comprising a device body 1, a pair of wheel assemblies 2, and a drive mechanism 3. Specifically, as Figure 1 As shown, the main body 1 of the device adopts a welded box-type frame to provide a stable and reliable support structure, thereby bearing the weight of the wheel assembly 2 and other additional components, and withstanding various forces and vibrations generated during travel. A pair of wheel assemblies 2 are independently arranged and spaced apart along the width of the main body 1. Each pair of wheel assemblies 2 is rotatably connected to the main body 1, and is used to drive the main body 1 along a circular track. A drive mechanism 3 is driven by one of the wheel assemblies 2, and is used to drive the rotation of that wheel assembly 2.

[0047] Specifically, if Figure 3 As shown, the circular track includes a first track 11 and a second track 12 to form an inner and outer double track configuration. A pair of wheel assemblies 2 travel along the first track 11 and the second track 12 respectively. The drive mechanism 3 includes a reducer 301, the output end of which is drively connected to the input end of one of the wheel assemblies 2 to transmit power to that wheel assembly 2. For example, as... Figure 5 As shown, the output end of the reducer 301 is connected to the input end of the left wheel assembly 2 to drive the left wheel assembly 2 to rotate and roll on the first track 11. Since both the left and right wheel assemblies 2 are connected to the main body 1 of the device, the right wheel assembly 2 will rotate with the left wheel assembly 2, thus rolling on the second track 12.

[0048] With this configuration, by independently arranging a pair of wheel assemblies 2, the drive mechanism 3 drives one wheel assembly 2 to rotate, and the other wheel assembly 2 rotates accordingly, thus enabling movement on a circular track. In this way, one side of the wheel assembly is the driving wheel assembly, and the other side is the driven wheel assembly, eliminating the difference between the inner and outer wheels, avoiding the phenomenon of wheel slippage on the track, reducing wear on the wheel assembly and track, extending their service life, and solving a series of problems caused by wheel difference.

[0049] Furthermore, such as Figure 1 As shown, in an optional embodiment of this utility model, there are at least two pairs of wheel assemblies 2, with multiple pairs of wheel assemblies 2 spaced apart along the length of the device body 1. The number of paired wheel assemblies 2 needs to be determined according to actual design requirements. For example, there are two pairs of wheel assemblies 2, respectively installed on the front and rear sides of the device body 1, to form a four-wheeled walking group.

[0050] With this configuration, the track-walking device achieves good stability and walking ability through the reasonable layout of the wheel assembly 2, and has a strong load-bearing capacity to meet the ultra-large lifting weight requirements of the ring rail crane, thus providing a strong guarantee for the reliability and lifting performance of the equipment.

[0051] See Figures 7 to 10 In some embodiments of this utility model, the wheel assembly 2 includes an axle 201, a wheel 202, and a pair of bearings 203. The wheel 202 is mounted on the axle 201, for example, connected by a key 210, so that the axle 201 can drive the wheel 202 to rotate, enabling the wheel 202 to travel along a circular track. The pair of bearings 203 are respectively disposed on both sides of the wheel 202, and both bearings 203 are disposed between the axle 201 and the device body 1, so as to realize the rotatable connection between the axle 201 and the device body 1.

[0052] Thus, as Figure 1 and Figure 5 As shown, in a single wheel assembly 2, the two sides of the wheel 202 are supported by two bearings 203 to achieve connection with the main body 1 of the device. Thus, the single wheel assembly is designed as a simply supported beam, which makes the axle 201 and bearing 203 bear force evenly, improves the load-bearing capacity of the wheel assembly, and enhances the lifting performance of the equipment.

[0053] Furthermore, in an optional embodiment of this utility model, bearing 203 is a K-type self-aligning bearing. This configuration, by selecting a K-type self-aligning bearing, significantly improves the axial load-bearing capacity of the wheel assembly 2, while also providing good impact resistance and extending the service life of the device.

[0054] In addition, see Figures 7 to 10The wheel assembly 2 also includes a bearing sleeve 204, a bushing 205, a locking nut 206, a first end cover 207, an adjusting washer 208, a second end cover 209, a third end cover 211, a first sealing ring 212, a washer 213, a second sealing ring 214, and a fourth end cover 215.

[0055] Specifically, in a pair of wheel assemblies 2, such as Figure 7 As shown, one of the wheel sets has a connecting part 2011 at the end of the axle 201. The connecting part 2011 is connected to the output end of the reducer 301 via a spline to form a driving wheel set. When assembling the driving wheel set, as follows... Figure 8 As shown, first, connect wheel 202 to axle 201 via key 210. Then, install axle sleeve 205, third end cap 211, and first sealing ring 212 onto the left side of axle 201, and install second end cap 209 onto the right side of axle 201. Next, install two K-type self-aligning roller bearings and bearing sleeves 204 onto both sides of axle 201. Then, install washers 213 and lock the K-type self-aligning roller bearings on both sides with lock nuts 206. Finally, tighten the fourth end cap 215 on the left, the second sealing ring 214, and the first end cap 207 on the right with bolts. After installation, measure the distance between the bearing sleeves 204 on both sides and adjust them to the appropriate position using adjusting washers 208 on both sides.

[0056] like Figure 9 As shown, the axle 201 of the other wheel set is not connected to the drive mechanism 3, forming a driven wheel set. Figure 10 As shown, the installation process of the driven wheel assembly is roughly the same as that of the driving wheel assembly, except that both ends of the wheel axle 201 are sealed with a first end cap 207.

[0057] In some embodiments of this utility model, such as Figure 2 As shown, the track-walking device also includes a pair of oppositely arranged arc-shaped mounting seats 4, and the pair of arc-shaped mounting seats 4 can be detachably connected. One of the arc-shaped mounting seats 4 is disposed on the main body 1 of the device, and the pair of arc-shaped mounting seats 4 are used to clamp the bearing 203.

[0058] Specifically, if Figure 6 As shown, a pair of arc-shaped mounting seats 4 are connected by fasteners 13, such as bolts. During installation, the main body 1 is first inverted, and the wheel assembly 2 is placed in the corresponding mounting position on the main body 1. The bearing sleeve 204, which is fitted over the bearing 203, is then installed into the arc-shaped mounting seat 4 on the main body 1. Then, the other half of the arc-shaped mounting seat 4 is pressed onto the main body 1, and the two arc-shaped mounting seats 4 are fastened with bolts to clamp and fix the bearing 203, thereby completing the assembly of the wheel assembly 2 and the main body 1.

[0059] This configuration, with a pair of arc-shaped mounting seats 4 working together, provides a flexible connection method and a stable support point, allowing the arc-shaped mounting seats 4 to be easily installed or removed as needed. This facilitates the maintenance and replacement of the wheel assembly 2 and ensures the overall performance and reliability of the device.

[0060] Furthermore, in optional embodiments of this utility model, such as Figure 4 As shown, the track walking device also includes a pin 5, and the connecting surfaces of a pair of arc-shaped mounting seats 4 are respectively provided with first mounting holes 401 that are adapted to the pin 5, and the pin 5 is inserted into the first mounting holes 401.

[0061] Specifically, during installation, the bearing 203 is installed into the arc-shaped mounting base 4 on the main body 1, and one end of the pin 5 is inserted into the first mounting hole 401 on the arc-shaped mounting base 4. Then, the other half of the arc-shaped mounting base 4 is pressed onto the main body 1, and the other end of the pin 5 is aligned and inserted into the first mounting hole 401 on the other arc-shaped mounting base 4, and then bolts are used to tighten it.

[0062] This configuration, by arranging pins 5 at the connection of the two arc-shaped mounting seats 4, not only ensures that the connection structure has sufficient strength and rigidity, providing a stable and reliable connection and support, but also effectively disperses the force at the joint, reduces the shearing force on the bolts, and ensures the safety and reliability of the device.

[0063] In some embodiments of this utility model, the track-walking device further includes a matching groove 6 and a protrusion 7, with the protrusion 7 engaging within the groove 6. One of the inner wall of the arc-shaped mounting base 4 and the outer wall of the bearing 203 is provided with the groove 6, and the other with the protrusion 7. That is, the inner wall of the arc-shaped mounting base 4 is provided with the groove 6, and the outer wall of the bearing 203 is correspondingly provided with the protrusion 7. Alternatively, the outer wall of the bearing 203 is provided with the groove 6, and the inner wall of the arc-shaped mounting base 4 is correspondingly provided with the protrusion 7.

[0064] For example, such as Figure 8 As shown, a bearing sleeve 204 is provided around the bearing 203. Therefore, as... Figure 2 As shown, the outer wall of the bearing sleeve 204 is provided with a corresponding protrusion 7, and the inner wall of the arc-shaped mounting base 4 is provided with a matching groove 6. During installation, the bearing 203 is installed into the arc-shaped mounting base 4 on the main body 1 of the device, and the protrusion 7 extends into the groove 6.

[0065] This design, through the cooperation of the slot 6 and the protrusion 7, serves to limit and fix the position, improves the ease of installation, and ensures the stability and reliability of the connection between the bearing sleeve 204 and the arc-shaped mounting base 4.

[0066] In some embodiments of this utility model, such as Figure 2As shown, the track-walking device also includes at least one guide wheel 8, which is rotatably disposed on the side of the device body 1 near the circular track. The number of guide wheels 8 needs to be determined according to the actual design requirements. Multiple guide wheels 8 are distributed at intervals along the length direction of the device body 1, and the guide wheels 8 are adapted to roll on the side of the circular track.

[0067] Specifically, if Figure 2 As shown, there are two guide wheels 8, located on the front and rear sides of the main body 1 of the device, respectively. Figure 4 As shown, the guide wheel 8 is rotatably connected to the bottom of the device body 1, and the guide wheel 8 is located between the first track 11 and the second track 12. The guide wheel 8 is clearance-fitted with the two side tracks, and the guide wheel 8 is adapted to roll on the side of the track.

[0068] With this configuration, the guide wheels 8 can guide the track-walking device and also withstand certain lateral loads when turning along the circular track, improving the stress distribution of the wheel assembly 2 and making the device more load-bearing, thus effectively meeting the load-bearing requirements of large-tonnage hoisting equipment.

[0069] Furthermore, in optional embodiments of this utility model, such as Figure 2 As shown, the track-walking device also includes a connecting plate 9, which is located on the side of the main body 1 near the circular track. Multiple guide wheels 8 are rotatably connected to the connecting plate 9. Specifically, as... Figure 2 As shown, the connecting plate 9 is located at the bottom of the device body 1. The connecting plate 9 has multiple third mounting holes 902, which are secured with bolts to achieve a fixed connection with the device body 1. The guide wheels 8 are rotatably connected to the connecting plate 9 via bearings. This arrangement provides a mounting and support platform for the guide wheels 8 via the connecting plate 9, facilitating the assembly of each guide wheel 8 and ensuring the stability and strength of the connection.

[0070] Preferably, such as Figure 4 As shown, a connecting shaft 10 is provided at the bottom of the main body 1 of the device. Correspondingly, a second mounting hole 901 adapted to the connecting shaft 10 is provided on the connecting plate 9. During installation, as... Figure 4 As shown, the connecting shaft 10 is inserted into the second mounting hole 901, and the connecting plate 9 is fastened by bolts. Thus, the connecting shaft 10 can share the force transmitted to the connecting plate 9 by the guide wheel 8, thereby reducing the shear force on the bolts and improving the reliability of the connection.

[0071] In summary, this utility model provides a track-walking device suitable for traveling along a circular track, including a main body 1, a wheel assembly 2, and a drive mechanism 3, etc. In this embodiment, as... Figure 1As shown, the main body 1 of the device is a welded box-shaped frame, and the wheel assembly 2 is rotatably connected to the main body 1. There are two pairs of wheel assemblies 2, respectively located on the front and rear sides of the main body 1, forming a four-wheeled walking system. The drive mechanism 3 includes a reducer 301. Taking the two front wheel assemblies as an example, one wheel assembly 2 is the driving wheel assembly, with its axle 201 connected to the output end of the reducer 301 to transmit power to the driving wheel assembly. The other wheel assembly 2 is the driven wheel assembly, which follows the driving wheel assembly and rolls on the circular track.

[0072] See Figures 7 to 10 In a single wheel assembly 2, a wheel 202 is mounted on an axle 201, and K-type self-aligning bearings are provided on both sides of the wheel 202. The K-type self-aligning bearings are located between the axle 201 and the main body 1 of the device, so that the axle 201 and the main body 1 of the device can be rotatably connected.

[0073] In this embodiment, as Figure 2 As shown, the track-walking device also includes a pair of detachably connected arc-shaped mounting seats 4. The pair of arc-shaped mounting seats 4 are used to clamp the K-type self-aligning bearing, with one of the arc-shaped mounting seats 4 mounted on the main body 1 of the device. The connecting surfaces of the pair of arc-shaped mounting seats 4 are respectively provided with first mounting holes 401 that mate with the pin 5, and the pin 5 is inserted into the first mounting holes 401. For ease of connection, the K-type self-aligning bearing is provided with a bearing sleeve 204. The outer wall of the bearing sleeve 204 is provided with a protrusion 7, and the inner wall of the arc-shaped mounting seat 4 is provided with a corresponding matching groove 6, with the protrusion 7 engaging within the groove 6.

[0074] Further, see Figure 2 The track-walking device also includes two guide wheels 8 located on the front and rear sides of the main body 1. Both guide wheels 8 are rotatably connected to the connecting plate 9, which is located at the bottom of the main body 1. The guide wheels 8 are adapted to roll on the side of the circular track.

[0075] In this embodiment, the track-walking device uses a pair of independently arranged wheel assemblies 2. A drive mechanism 3 drives one wheel assembly 2 to rotate, and the other wheel assembly 2 rotates accordingly. Thus, one side of the wheel assembly is the driving wheel assembly, and the other side is the driven wheel assembly. This eliminates the difference between inner and outer wheel tracks, preventing wheel slippage on the track, reducing wear on the wheel assembly and track, extending service life, and solving a series of problems caused by wheel differences. Simultaneously, the individual wheel assembly is designed as a simply supported beam structure, ensuring uniform stress on the axle 201 and bearing 203, effectively improving the load-bearing capacity of the wheel assembly.

[0076] Furthermore, a K-type self-aligning bearing is selected to connect with the main body 1 of the device, and a pair of arc-shaped mounting seats 4 are connected by a pin 5 to clamp and fix the K-type self-aligning bearing, thereby greatly improving the axial load capacity of the wheel set.

[0077] According to an embodiment of the present invention, another aspect provides a crane, including the track-walking device as described in the various embodiments above. The derivation process of this beneficial effect is largely similar to the derivation process of the beneficial effect of the track-walking device described above, and therefore will not be repeated here.

[0078] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A track-walking device suitable for traveling on a circular track, characterized in that, include: Device body (1); A pair of independent wheel assemblies (2) are rotatably connected to the main body of the device (1), and the pair of wheel assemblies (2) are spaced apart along the width direction of the main body of the device (1). The pair of wheel assemblies (2) are used to drive the main body of the device (1) to travel along the circular track. A drive mechanism (3) is connected to one of the wheel assemblies (2) for driving one of the wheel assemblies (2) to rotate.

2. The track-walking device according to claim 1, characterized in that, The wheel assembly (2) includes: A wheel axle (201) is rotatably connected to the main body (1) of the device; A wheel (202) is mounted on the axle (201) and is capable of traveling along the circular track; A pair of bearings (203) are respectively disposed on both sides of the wheel (202), and both of the bearings (203) are disposed between the axle (201) and the main body (1) of the device, so that the axle (201) and the main body (1) of the device are rotatably connected.

3. The track-walking device according to claim 2, characterized in that, The bearing (203) is a K-type self-aligning bearing.

4. The track-walking device according to claim 2, characterized in that, Also includes: A pair of opposing arc-shaped mounting seats (4) are detachably connected, one of the arc-shaped mounting seats (4) is disposed on the main body (1) of the device, and the pair of arc-shaped mounting seats (4) are used to clamp the bearing (203).

5. The track-walking device according to claim 4, characterized in that, Also includes: The pin (5) has a first mounting hole (401) on the connecting surface of a pair of arc-shaped mounting seats (4) that is adapted to the pin (5), and the pin (5) is inserted into the first mounting hole (401).

6. The track-walking device according to claim 4, characterized in that, Also includes: The inner wall of the arc-shaped mounting base (4) and the outer wall of the bearing (203) are provided with the groove (6) and the other is provided with the protrusion (7), and the protrusion (7) is engaged in the groove (6).

7. The track-walking device according to any one of claims 1 to 6, characterized in that, The wheel assembly (2) consists of at least two pairs, and multiple pairs of wheel assemblies (2) are distributed at intervals along the length direction of the device body (1).

8. The track-walking device according to any one of claims 1 to 6, characterized in that, Also includes: At least one guide wheel (8) is rotatably disposed on one side of the device body (1) near the annular track, and a plurality of guide wheels (8) are spaced apart along the length direction of the device body (1), and the guide wheels (8) are adapted to roll on the side of the annular track.

9. The track-walking device according to claim 8, characterized in that, Also includes: A connecting plate (9) is disposed on the side of the main body (1) of the device close to the annular track, and multiple guide wheels (8) are rotatably connected to the connecting plate (9).

10. A crane, characterized in that, Includes the track-walking device as described in any one of claims 1 to 9.

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