Wheelset shifting device

Abstract

This utility model relates to the field of railway rescue technology and discloses a wheelset relocation device. The wheelset relocation device includes two sets of replacement wheel assemblies and a connecting assembly. The two sets of replacement wheel assemblies correspond one-to-one with the two wheels of the wheelset. Each replacement wheel assembly includes multiple rotatable running wheels with grooves formed between them, allowing the wheels to be inserted into the corresponding grooves. The connecting assembly is detachably disposed between the two sets of replacement wheel assemblies for connecting them. This wheelset relocation device effectively reduces damage to the wheels, tracks, and vehicles caused by relocation, and improves the convenience and efficiency of wheelset movement.

Description

Technical Field

[0001] This utility model belongs to the field of railway rescue technology, and in particular relates to a wheelset shifting device. Background Technology

[0002] In the field of railway vehicles, a component consisting of two wheels pressed onto the same axle with an interference fit is called a "wheelset". Wheelsets are mainly used to bear the overall load of the vehicle, drive the vehicle along the track, and enable the vehicle to steer, and are the foundation for ensuring the safe and stable operation of railway vehicles.

[0003] In actual railway vehicle operation, wheelset failure often leads to the vehicle losing its ability to move and becoming out of service. Current technology commonly addresses this by forcibly moving the disabled vehicle to a maintenance depot or a nearby backup track to prevent it from interfering with the passage of other vehicles. However, during this forced movement, severe sliding friction occurs between the stationary wheels and the track, causing not only operational difficulties but also serious damage to the wheelset and track. This can even lead to secondary failures such as deformation of the vehicle body structure and loosening of bogie connections, significantly increasing the workload and cost of vehicle relocation and subsequent maintenance, and prolonging the vehicle's downtime for inspection and repair.

[0004] Therefore, there is an urgent need for a wheelset shifting device to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a wheelset shifting device that effectively reduces the damage to wheels, tracks and vehicles caused by shifting, and improves the convenience and efficiency of wheelset movement.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A wheelset shifting device is provided, comprising:

[0008] Two sets of replacement wheel assemblies, each corresponding to one of the two wheels of a wheelset. Each replacement wheel assembly includes multiple rotatable running wheels with grooves formed between them, allowing the wheels to be inserted into the corresponding grooves.

[0009] A connecting component is detachably disposed between two sets of replacement wheel assemblies for connecting the two sets of replacement wheel assemblies.

[0010] Optionally, the replacement wheel assembly also includes two spaced-apart mounting seats with an adjustable spacing between them. Each mounting seat is provided with several traveling wheels, which rotate in conjunction with the corresponding mounting seat. Each mounting seat is provided with a limit groove, and the space between the two limit grooves and the two mounting seats together forms a wheel groove.

[0011] Optionally, the replacement wheel assembly also includes an adjustment element located between two mounting seats, both of which are detachably connected to the adjustment element, and the extension length of the adjustment element is adjustable.

[0012] Optionally, the adjusting component includes a first adjusting part, a second adjusting part, and a third adjusting part. The first adjusting part is connected to one of the two mounting seats, and the third adjusting part is connected to the other of the two mounting seats. One end of the second adjusting part is threadedly connected to the first adjusting part, and the other end of the second adjusting part is connected to the third adjusting part. The threads at both ends of the second adjusting part are turned in opposite directions.

[0013] Alternatively, the adjusting member includes a fourth adjusting part and a fifth adjusting part that are slidably connected along its length, the overlap length of the fourth adjusting part and the fifth adjusting part being adjustable, the fourth adjusting part being connected to one of the two mounting seats, and the fifth adjusting part being connected to the other of the two mounting seats.

[0014] Optionally, the mounting base is provided with a mounting slot, and the adjusting element can be engaged or disengaged from the mounting slot.

[0015] Optionally, the mounting base is provided with a connecting shaft, and the traveling wheel is rotatably fitted onto the connecting shaft around its own axis and is sealed to the connecting shaft.

[0016] Optionally, the replacement wheel assembly also includes a sealing ring fitted onto the connecting shaft, through which the connecting shaft is sealed to the traveling wheel.

[0017] Optionally, the connecting assembly includes multiple connectors arranged at intervals, and both sets of replacement wheel assemblies can be detachably connected to any one of the connectors.

[0018] Optionally, the connector includes a plurality of first connecting rods of different lengths, one of which can be connected to the wheel assembly;

[0019] Alternatively, the connector includes a first connecting portion and a second connecting portion that are slidably connected along its length, the overlap length of the first connecting portion and the second connecting portion being adjustable, the first connecting portion being connected to one of the two sets of replacement wheel assemblies, and the second connecting portion being connected to the other of the two sets of replacement wheel assemblies.

[0020] Optionally, the wheelset shifting device also includes a connector that passes through the connecting assembly and is inserted into the replacement wheel assembly;

[0021] Alternatively, the wheelset shifting device may also include fasteners that pass through the connecting assembly and are secured to the replacement wheel assembly.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This invention provides a wheelset relocation device. The design of the traveling wheels allows the entire replacement wheel assembly to move. When the wheels of the wheelset are embedded in the wheel groove, the replacement wheel assembly supports the wheels. At this point, the wheels can be moved simply by driving the traveling wheels to rotate, and the wheels do not rub against the track during movement. This not only improves the ease of wheelset movement but also effectively reduces damage to the wheels, tracks, and vehicles caused by relocation, significantly improving the efficiency of vehicle relocation and maintenance. The connecting assembly can connect two sets of replacement wheel assemblies, allowing the two wheels in the wheelset to move together, improving the consistency of the overall wheelset movement and further reducing damage to the wheelset and vehicle caused by relocation. Furthermore, the connecting assembly and the replacement wheel assembly are detachably connected, which helps improve the installation and removal efficiency of the wheelset relocation device at the rescue site and increases the efficiency of vehicle relocation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the wheelset shifting device provided by this utility model;

[0025] Figure 2 This is a top view of the wheelset shifting device provided by this utility model;

[0026] Figure 3 This is a schematic diagram of the replacement wheel assembly of the wheelset shifting device provided by this utility model;

[0027] Figure 4 A cross-sectional view of the mounting base for the wheelset shifting device provided by this utility model;

[0028] Figure 5 Exploded view of the wheel replacement assembly of the wheelset shifting device provided by this utility model;

[0029] Figure 6 A schematic diagram of the connecting components of the wheelset shifting device provided by this utility model.

[0030] in:

[0031] 1. Replacement wheel assembly; 11. Traveling wheel; 12. Wheel groove; 121. Limiting groove; 13. Mounting base; 131. Connecting shaft; 132. Sealing ring; 133. Bearing; 134. Bushing; 135. Mounting groove; 136. Second connecting lug; 14. Adjusting component; 141. Limiting part; 142. First adjusting part; 143. Second adjusting part; 144. Third adjusting part;

[0032] 2. Connecting component; 21. Connector; 211. First connecting lug; 22. Connector. Detailed Implementation

[0033] It should be understood that in the description of this utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" 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 based on the specific circumstances.

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 6 As shown, this embodiment provides a wheelset shifting device that effectively reduces damage to wheels, tracks and vehicles caused by shifting, and improves the convenience and efficiency of wheelset movement.

[0037] See Figure 1 The wheelset shifting device includes two sets of replacement wheel assemblies 1 and a connecting assembly 2. The two sets of replacement wheel assemblies 1 can correspond one-to-one with the two wheels of the wheelset. The replacement wheel assembly 1 includes multiple rotatable traveling wheels 11, and wheel grooves 12 are formed between the multiple traveling wheels 11, so that the wheels can be embedded in the corresponding wheel grooves 12. The connecting assembly 2 is detachably disposed between the two sets of replacement wheel assemblies 1 and is used to connect the two sets of replacement wheel assemblies 1.

[0038] The wheelset relocation device provided in this embodiment features a traveling wheel 11 that allows the entire replacement wheel assembly 1 to move. Once the wheels of the wheelset are embedded in the wheel groove 12, the replacement wheel assembly 1 supports the wheels. At this point, the wheels can be moved simply by rotating the traveling wheel 11, and the wheels do not rub against the track during movement. This not only improves the ease of wheelset movement but also effectively reduces damage to the wheels, track, and vehicle caused by relocation, significantly improving the efficiency of vehicle relocation and maintenance. The connecting assembly 2 connects two sets of replacement wheel assemblies 1, allowing the two wheels in the wheelset to move together, improving the consistency of the overall wheelset movement and further reducing damage to the wheelset and vehicle caused by relocation. Furthermore, the connecting assembly 2 is detachably connected to the replacement wheel assembly 1, which helps improve the installation and removal efficiency of the wheelset relocation device at the rescue site and increases the efficiency of vehicle relocation.

[0039] For example, see Figure 2 In the orientation of the wheelset, the two wheels of the wheelset are arranged at intervals along the X direction, the two sets of replacement wheel assemblies 1 are arranged at intervals along the X direction, and the connecting assembly 2 extends along the X direction.

[0040] For example, the traveling wheel 11 is a small-sized wheel or a swivel wheel.

[0041] Optionally, see Figure 1 and Figure 3 The wheel replacement assembly 1 also includes two spaced-apart mounting seats 13 with an adjustable distance between them. Each mounting seat 13 is equipped with several traveling wheels 11, which rotatably engage with their corresponding mounting seats 13. Each mounting seat 13 has a limiting groove 121, and the space between the two limiting grooves 121 and the two mounting seats 13 together forms a wheel groove 12. By adjusting the distance between the two mounting seats 13, the distance between the two limiting grooves 121 changes, thus adjusting the size of the wheel groove 12. This allows wheels of different sizes to be embedded in the wheel groove 12, improving the versatility of the wheelset shifting device. The wheel groove 12 is formed by the space between the two limiting grooves 121 and the two mounting seats 13. This arrangement helps reduce the manufacturing cost of forming the wheel groove 12, thereby lowering the production cost of the wheelset shifting device.

[0042] Specifically, see Figure 3 The opening of the limiting groove 121 is opened along a preset direction toward the location of another limiting groove 121. The preset direction is set at an angle to the vertical direction.

[0043] For example, see Figure 2 In the orientation of the vehicle, when the vehicle is in motion, the wheels travel along the Y direction, and the two mounting seats 13 are arranged at intervals along the Y direction.

[0044] In this embodiment, see Figure 3Each mounting base 13 is provided with a wheel 11; in other embodiments, each mounting base 13 may be provided with multiple wheels 11.

[0045] In this embodiment, see Figure 4 A connecting shaft 131 is provided on the mounting base 13. The traveling wheel 11 is rotatably sleeved on the connecting shaft 131 around its own axis and is sealed to the connecting shaft 131 to achieve a rotatable connection between the traveling wheel 11 and the mounting base 13. The sealed connection between the traveling wheel 11 and the connecting shaft 131 can effectively prevent dust or debris from entering between the traveling wheel 11 and the mounting base 13, ensuring the smooth rotation of the traveling wheel 11.

[0046] Specifically, see Figure 3 and Figure 4 The replacement wheel assembly 1 also includes a sealing ring 132 sleeved on the connecting shaft 131, and the connecting shaft 131 is sealed to the traveling wheel 11 through the sealing ring 132.

[0047] For example, the sealing ring 132 is a rubber ring.

[0048] Specifically, see Figure 4 The mounting base 13 is provided with a connecting hole, and the connecting shaft 131 passes through the connecting hole and is connected to the hole wall of the connecting hole through the bushing 134. This not only realizes the installation of the connecting shaft 131 on the mounting base 13, but also helps to avoid collision between the connecting shaft 131 and the hole wall of the connecting hole, thereby improving the service life of the mounting base 13 and the connecting shaft 131.

[0049] Specifically, see Figure 4 The connecting shaft 131 is connected to the traveling wheel 11 via a bearing 133. The bearing 133 supports the traveling wheel 11, reduces friction between the traveling wheel 11 and the connecting shaft 131, and ensures smooth and efficient rotation of the traveling wheel 11.

[0050] Optionally, see Figure 3 The wheel replacement assembly 1 also includes an adjusting member 14 located between two mounting seats 13. Both mounting seats 13 are detachably connected to the adjusting member 14, and the extension length of the adjusting member 14 is adjustable. When the adjusting member 14 is detached from the mounting seats 13, the operator can move both the adjusting member 14 and the mounting seats 13 independently, improving the ease of movement of the wheel replacement assembly 1. When installing this wheelset shifting device at the wheel, simply connect the adjusting member 14 to the mounting seats 13, further improving the convenience and efficiency of wheel shifting. The adjustable length of the adjusting member 14 ensures that it can always be connected to both mounting seats 13 regardless of changes in the distance between them.

[0051] In this embodiment, see Figure 4The mounting base 13 is provided with a mounting groove 135, and the adjusting member 14 can be inserted into or removed from the mounting groove 135, thereby realizing the separable connection between the adjusting member 14 and the mounting base 13.

[0052] Specifically, see Figure 4 The mounting groove 135 is positioned such that its opening faces the thickness of the wheel. Figure 4 The adjustment member 14 extends along the Y direction. A limiting part 141 is provided at the end of the adjustment member 14. After the adjustment member 14 is inserted into the mounting groove 135 along the X direction, the limiting part 141 contacts the side of the corresponding mounting seat 13 away from the other mounting seat 13, thereby effectively constraining the position of the adjustment member 14 along the Y direction.

[0053] In this embodiment, see Figure 4 Each set of replacement wheel assembly 1 is provided with multiple adjusting components 14, and the mounting base 13 is provided with mounting grooves 135 corresponding to the multiple adjusting components 14 one by one. The multiple adjusting components 14 are arranged along the thickness direction of the wheel. Figure 4 The two mounting bases 13 are spaced apart in the X direction to improve the connection strength between them and enhance the overall integrity of each replacement wheel assembly 1.

[0054] Specifically, see Figure 4 In the orientation, each set of replacement wheel assembly 1 is provided with two adjusting parts 14. The left adjusting part 14 is inserted into the corresponding mounting groove 135 in the direction from left to right, and the right adjusting part 14 is inserted into the corresponding mounting groove 135 in the direction from right to left.

[0055] In this embodiment, see Figure 4 The adjusting member 14 includes a first adjusting part 142, a second adjusting part 143, and a third adjusting part 144. The first adjusting part 142 is connected to one of the two mounting seats 13, and the third adjusting part 144 is connected to the other of the two mounting seats 13. One end of the second adjusting part 143 is threadedly connected to the first adjusting part 142, and the other end of the second adjusting part 143 is connected to the third adjusting part 144. The threads at both ends of the second adjusting part 143 are turned in opposite directions. This arrangement allows the connection length between the second adjusting part 143 and the first adjusting part 142 and the connection length between the second adjusting part 143 and the third adjusting part 144 to be adjusted synchronously when the second adjusting part 143 is screwed on.

[0056] Specifically, see Figure 4 Limiting portions 141 are provided at the ends of the first adjusting portion 142 away from the second adjusting portion 143 and at the ends of the third adjusting portion 144 away from the second adjusting portion 143.

[0057] Specifically, see Figure 4Twist the second adjustment part 143. When the connection length between the second adjustment part 143 and the first adjustment part 142 becomes longer, the connection length between the second adjustment part 143 and the third adjustment part 144 also becomes longer; when the connection length between the second adjustment part 143 and the first adjustment part 142 becomes shorter, the connection length between the second adjustment part 143 and the third adjustment part 144 also becomes shorter.

[0058] For example, both the first adjusting part 142 and the third adjusting part 144 are screws, and the second adjusting part 143 is a double-threaded nut; or, both the first adjusting part 142 and the third adjusting part 144 are nuts, and the second adjusting part 143 is a screw. Regardless of the arrangement, it is sufficient that the thread direction of the first adjusting part 142 is opposite to that of the third adjusting part 144, and the thread directions at both ends of the second adjusting part 143 are opposite.

[0059] In other embodiments, the adjusting member 14 includes a fourth adjusting portion and a fifth adjusting portion slidably connected along its length. The overlap length between the fourth and fifth adjusting portions is adjustable. The fourth adjusting portion is connected to one of the two mounting seats 13, and the fifth adjusting portion is connected to the other of the two mounting seats 13. The relative sliding of the fourth and fifth adjusting portions changes the overlap length between them, thus adjusting the length of the adjusting member 14 and adapting to changes in the distance between the two mounting seats 13.

[0060] Specifically, when the overlap length between the fourth and fifth adjustment parts increases, the length of the adjustment member 14 decreases; when the overlap length between the fourth and fifth adjustment parts decreases, the length of the adjustment member 14 increases.

[0061] For example, the fourth adjustment part and the fifth adjustment part are coaxially arranged. The fourth adjustment part adopts an adjustment rod, and the fifth adjustment part adopts an adjustment tube. The adjustment rod is slidably inserted into the adjustment tube, and the length of overlap between the fourth adjustment part and the fifth adjustment part is the length of the adjustment rod inserted into the adjustment tube.

[0062] In some embodiments, the fourth and fifth adjusting portions may be arranged at opposite axes. Exemplarily, both the fourth and fifth adjusting portions are plate-shaped structures, arranged side by side, with the plate surface of the fourth adjusting portion fitting against the plate surface of the fifth adjusting portion, and the overlap length of the fourth and fifth adjusting portions being the length of the two plate surfaces fitting together.

[0063] Optionally, see Figure 1 and Figure 2The connecting component 2 includes multiple connectors 21 arranged at intervals, and both sets of wheel replacement assemblies 1 can be detachably connected to any one of the connectors 21. The multiple connectors 21 increase the connection strength between the two sets of wheel replacement assemblies 1, improve the consistency of movement of the two sets of wheel replacement assemblies 1, enable the two wheels to move collaboratively, prevent the vehicle from serpentine movement, and help reduce damage to the wheelset and the vehicle from movement.

[0064] For example, see Figure 2 There are four mounting bases 13 and two connectors 21. The two connectors 21 are arranged at intervals along the X direction. One mounting base 13 of a set of replacement wheel assemblies 1 can be connected to one mounting base 13 of another set of replacement wheel assemblies 1 through one connector 21.

[0065] In this embodiment, the connector 21 includes multiple first connecting rods of different lengths, one of which can be connected to the wheel replacement assembly 1. When the distance between two wheels is different, a first connecting rod of appropriate length can be selected and installed between the two sets of wheel replacement assemblies 1, so that the connector 21 can be used for wheelsets of different specifications, thus expanding the versatility of the wheelset shifting device.

[0066] In other embodiments, the connector 21 includes a first connecting portion and a second connecting portion that are slidably connected along its length. The overlap length between the first connecting portion and the second connecting portion is adjustable. The first connecting portion is connected to one of the two sets of replacement wheel assemblies 1, and the second connecting portion is connected to the other of the two sets of replacement wheel assemblies 1. The relative sliding of the first connecting portion and the second connecting portion changes the overlap length of the first connecting portion and the second connecting portion, thereby adjusting the length of the connector 21 and adapting to changes in the distance between the two sets of replacement wheel assemblies 1.

[0067] Specifically, when the overlap length of the first connecting part and the second connecting part increases, the length of the connector 21 decreases and the distance between the two sets of replacement wheel assemblies 1 decreases; when the overlap length of the first connecting part and the second connecting part decreases, the length of the connector 21 increases and the distance between the two sets of replacement wheel assemblies 1 increases.

[0068] For example, the first connecting part adopts a second connecting rod, and the second connecting part adopts a connecting tube. The second connecting rod is slidably inserted into the connecting tube, and the overlap length of the first connecting part and the second connecting part is the length of the second connecting rod inserted into the connecting tube. In other embodiments, both the first connecting part and the second connecting part are plate-shaped structures, arranged side by side, with the plate surface of the first connecting part and the plate surface of the second connecting part in contact, and the overlap length of the first connecting part and the second connecting part being the length of the two plate surfaces in contact.

[0069] In an optional embodiment, see [link to relevant documentation] Figure 2 and Figure 6The wheelset shifting device also includes a connector 22, which passes through the connecting component 2 and is inserted into the replacement wheel component 1 to achieve a detachable connection between the connecting component 2 and the replacement wheel component 1. This makes the operation convenient and quick, and improves the efficiency of the connection between the connecting component 2 and the replacement wheel component 1.

[0070] In this embodiment, see Figure 2 and Figure 6 The connecting component 2 includes multiple connectors 21, each connector 21 having a first connecting ear plate 211 at both ends. The replacement wheel component 1 includes two mounting seats 13, each mounting seat 13 having a second connecting ear plate 136. Multiple plug-in connectors 22 are provided, each plug-in connector 22 being able to pass through a first connecting ear plate 211 and a second connecting ear plate 136 to achieve connection between the connector 21 and a mounting seat 13.

[0071] Specifically, see Figure 2 There are four mounting bases 13, two connectors 21, and four plug-in connectors 22.

[0072] For example, see Figure 6 The connector 22 uses a pin.

[0073] In another alternative embodiment, the wheelset shifting device further includes a fastener that passes through the connecting assembly 2 and is fastened to the replacement wheel assembly 1 to achieve a detachable connection between the connecting assembly 2 and the replacement wheel assembly 1.

[0074] In this embodiment, the connecting component 2 includes multiple connectors 21, each connector 21 having a first connecting lug 211 at both ends. The replacement wheel component 1 includes two mounting seats 13, each mounting seat 13 having a second connecting lug 136. Multiple fasteners are provided, each fastener being able to pass through a first connecting lug 211 and be fastened to a second connecting lug 136, so as to realize the connection between the connector 21 and a mounting seat 13.

[0075] For example, the fastener is a bolt, which is threaded to the second connecting lug 136.

[0076] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A wheelset shifting device, characterized in that, include: Two sets of replacement wheel assemblies (1) are provided, and the two sets of replacement wheel assemblies (1) can correspond one-to-one with the two wheels of the wheelset. Each replacement wheel assembly (1) includes a plurality of rotatable traveling wheels (11), and wheel grooves (12) are formed between the plurality of traveling wheels (11). The wheels can be embedded in the corresponding wheel grooves (12). A connecting component (2) is detachably disposed between the two sets of the replacement wheel assemblies (1) for connecting the two sets of the replacement wheel assemblies (1).

2. The wheelset shifting device according to claim 1, characterized in that, The replacement wheel assembly (1) also includes two mounting seats (13) spaced apart, and the distance between the two mounting seats (13) is adjustable. Each mounting seat (13) is provided with a plurality of the traveling wheels (11). The traveling wheels (11) are rotatably engaged with the corresponding mounting seat (13). The mounting seat (13) is provided with a limiting groove (121). The space between the two limiting grooves (121) and the two mounting seats (13) together forms the wheel groove (12).

3. The wheelset shifting device according to claim 2, characterized in that, The replacement wheel assembly (1) also includes an adjustment member (14) located between the two mounting seats (13), both mounting seats (13) being detachably connected to the adjustment member (14), and the extension length of the adjustment member (14) being adjustable.

4. The wheelset shifting device according to claim 3, characterized in that, The adjusting member (14) includes a first adjusting part (142), a second adjusting part (143) and a third adjusting part (144). The first adjusting part (142) is connected to one of the two mounting seats (13), and the third adjusting part (144) is connected to the other of the two mounting seats (13). One end of the second adjusting part (143) is threadedly connected to the first adjusting part (142), and the other end of the second adjusting part (143) is connected to the third adjusting part (144). The threads at both ends of the second adjusting part (143) are turned in opposite directions. Alternatively, the adjusting member (14) includes a fourth adjusting part and a fifth adjusting part that are slidably connected along its length, the overlap length of the fourth adjusting part and the fifth adjusting part being adjustable, the fourth adjusting part being connected to one of the two mounting seats (13), and the fifth adjusting part being connected to the other of the two mounting seats (13).

5. The wheelset shifting device according to claim 3, characterized in that, The mounting base (13) is provided with a mounting groove (135), and the adjusting member (14) can be engaged or disengaged from the mounting groove (135).

6. The wheelset shifting device according to claim 2, characterized in that, The mounting base (13) is provided with a connecting shaft (131), and the walking wheel (11) is rotatably sleeved on the connecting shaft (131) around its own axis and is sealed to the connecting shaft (131).

7. The wheelset shifting device according to claim 6, characterized in that, The replacement wheel assembly (1) also includes a sealing ring (132) sleeved on the connecting shaft (131), and the connecting shaft (131) is sealed to the traveling wheel (11) through the sealing ring (132).

8. The wheelset shifting device according to claim 1, characterized in that, The connecting assembly (2) includes a plurality of connectors (21) arranged at intervals, and both sets of the wheel assemblies (1) can be detachably connected to any one of the connectors (21).

9. The wheelset shifting device according to claim 8, characterized in that, The connector (21) includes a plurality of first connecting rods of different lengths, and one of the plurality of first connecting rods can be connected to the wheel assembly (1); Alternatively, the connector (21) includes a first connecting portion and a second connecting portion that are slidably connected along its length direction, the overlap length of the first connecting portion and the second connecting portion being adjustable, the first connecting portion being connected to one of the two sets of the replacement wheel assembly (1), and the second connecting portion being connected to the other of the two sets of the replacement wheel assembly (1).

10. The wheelset shifting device according to any one of claims 1-9, characterized in that, The wheelset shifting device also includes a connector (22) that passes through the connecting assembly (2) and is inserted into the wheel replacement assembly (1). Alternatively, the wheelset shifting device may further include a fastener that passes through the connecting assembly (2) and is fastened to the replacement wheel assembly (1).

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