Wheel accessory

Abstract

The utility model discloses a wheel accessory which is characterized in that a common gear is rotatably connected to the middle of a circumferential bottom plate, a claw rod is slidably connected with the bottom plate, a rack is arranged at one end, close to the common gear, of the claw rod, the rack is connected with the common gear in a meshed mode, and a locking assembly used for locking the claw rod is arranged on the bottom plate. During use, the circumferential bottom plate and the wheel can be integrated or separated, the separated part needs to be installed and fixed on the wheel, the length of the claw rod extending out of the circumferential bottom plate can be controlled by rotating the common gear, the purpose of crossing different obstacles can be achieved after position locking is conducted on the selected length, and therefore the performance of the wheel adapting to various road conditions is improved. After the claw rods extend out, the claw rods can be used for preventing skidding and can also be used for climbing steps or stairs, and trafficability of vehicles is improved.

Description

Technical Field

[0001] The utility model belongs to the field of wheels, and in particular relates to a wheel accessory. Background Art

[0002] At present, the outer edge of the known tire is round. When the current road surface is deeply muddy, such as paddy fields, thick snow, ice, deserts, steps, and stairs, conventional round tires will have difficulty in moving. In the known technology, the problem of anti-skid is mostly solved by installing anti-skid chains on the outside of the tires. When solving the problem of climbing steps and stairs, a method of planetary arrangement of three wheels is adopted. For example, the patent document with announcement number CN219579258U adopts this method. There is also a method of replacing three-claw rods, four-claw rods or multi-claw rods to solve the problem. For example, the patent document with announcement number CN109291979B adopts this method. When anti-skid chains are installed on the outside of conventional tires, it is difficult to adapt to the aforementioned various road conditions due to the small height difference between the newly added anti-skid chains and the outer surface of the tire. Due to the large spacing between adjacent multi-claw rods, a large vibration occurs when the claw rods fall to the ground and switch. These all affect the smooth operation of the entire vehicle body and the extended length of each claw rod is fixed, which makes it more difficult to adapt to various road conditions. Moreover, the existing technologies are only used to deal with situations that require anti-slip or climbing stairs and steps, and the wheels need to be replaced when encountering different conditions. Utility Model Content

[0003] The technical problem to be solved by the utility model is that, in view of the defect that the method of adding anti-skid chains to wheels in the prior art has a small height difference between the anti-skid chains and the outer surface of the tire, it is difficult to adapt to various road conditions. The utility model solves the problem of how to provide a wheel accessory that can adapt to various road conditions.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A wheel accessory comprises a circumferential base plate and a claw rod, wherein a common gear is rotatably connected to the middle of the circumferential base plate, the claw rod is slidably connected to the circumferential base plate, a rack is arranged at one end of the claw rod close to the common gear, the rack is meshingly connected to the common gear, and a locking assembly for locking the claw rod position is arranged on the circumferential base plate.

[0006] A further technical solution is that more than two connecting sections are arranged along the axial direction of the common gear, and the number of claw rods connected to each layer of connecting sections is less than two.

[0007] A further technical solution is that the end of the claw rod away from the rack is a claw portion, and the length direction of the claw portion is in the radial direction of the circumferential bottom plate.

[0008] A further technical solution is that an ice pick or a small wheel is provided at the top of the claw.

[0009] A further technical solution is that the circumferential base plate is provided with multiple supporting columns, a boss is provided at the end of the common gear away from the circumferential base plate, a stabilizing plate is sleeved on the boss, multiple supporting columns all penetrate the stabilizing plate and are movably connected with it, a first limiting nut is provided on the supporting column, and the first limiting nut is located on the side of the stabilizing plate away from the circumferential base plate.

[0010] A further technical solution is that a clutch is arranged inside one end of the common gear close to the stabilizing plate, a clutch spring is arranged inside the clutch, a meshing portion 1 is arranged at the end of the clutch located inside the common gear, a meshing portion 2 capable of transmitting with the meshing portion 1 is arranged inside the common gear, and the clutch extending into the common gear can compress the clutch spring and the meshing portion 1 meshes with the meshing portion 2.

[0011] A further technical solution is that a cover plate is provided at the end of the supporting column, a through hole is provided in the middle of the cover plate, one end of the clutch located outside the common gear passes through the through hole, a circular groove is provided on the side of the end of the clutch located outside the common gear, and a snap ring guide plate 1 and a snap ring guide plate 2 are respectively provided on both sides of the through hole on the cover plate, a guide groove 1 is provided between the snap ring guide plate 1 and the cover plate, a limiting snap ring is movably provided in the guide groove 1, a guide groove 2 is provided between the snap ring guide plate 2 and the cover plate, and a locking snap ring is movably provided in the guide groove 2.

[0012] A further technical solution is that one end of spring one is fixedly connected to the cover plate by bolt one, and the other end of spring one is connected to a limiting clamping ring; one end of spring two is fixedly connected to the cover plate by bolt two, and the other end of spring two is connected to a locking clamping ring; and levers are provided on both the limiting clamping ring and the locking clamping ring.

[0013] A further technical solution is that the clutch is connected to a transmission rod, the transmission rod is connected to the clutch, the transmission rod is connected to the motor, a reserved hole is set in the center of the transmission rod, a pull rod is set in the reserved hole, one end of the pull rod is fixed to the clutch, one end of the clutch spring is in contact with the end of the transmission rod, and the other end of the clutch spring is in contact with the inner wall of the clutch.

[0014] A further technical solution is that the locking assembly includes a locking plate, which is sleeved on the end of the common gear and movably connected to it, a locking spring is arranged between the locking plate and the steady-state plate, and a ramp block for locking purposes is arranged on the end surface of the locking plate facing the cover plate, and the number of the ramp blocks is consistent with the number of claw rods, and a pressure rod is rotatably connected to the circumferential bottom plate, and the number and position of the pressure rods match the claw rods, one end of the pressure rod is located at the ramp block, and the other end of the pressure rod is located at the inner side of the edge of the circumferential bottom plate and above the claw rod, a polygonal hole is arranged in the middle of the locking plate, and a polygonal part matching the polygonal hole is arranged on the clutch, and the polygonal hole is separated from the polygonal part when the meshing part one is meshed with the meshing part two, and the polygonal part is located inside the polygonal hole when the meshing part one is separated from the meshing part two, and a top block is arranged at one end of the pressure rod located at the claw rod.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] The common gear is connected by rotating in the middle of the circumferential bottom plate, the claw rod is slidably connected with the circumferential bottom plate, a rack is provided at one end of the claw rod close to the common gear, the rack is meshed and connected with the common gear, and a locking assembly for locking the claw rod is provided on the circumferential bottom plate. When in use, the circumferential bottom plate and the wheel can be integrated or separated, and the separated part needs to be installed and fixed on the wheel. The length of the claw rod extending out of the circumferential bottom plate can be controlled by rotating the common gear. After the selected length is locked in position, the purpose of crossing different obstacles can be achieved, thereby improving the performance of the wheel in adapting to various road conditions. After the claw rod is extended, it can not only be used for anti-skid, but also for climbing steps or stairs, increasing the passability of the vehicle, thereby realizing that the wheel can adapt to various road conditions.

[0017] After the attachment is installed, the corresponding state adjustment can be made according to different road conditions, which can not only conveniently improve the running condition of the vehicle on the aforementioned road surface, but also when the claw rod of the attachment is fully retracted, closed or removed, it can still be used as an ordinary running wheel. That is, adding an attachment can be applied to various road conditions and enhance the passability of the vehicle tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the outer cover of the utility model with a part removed;

[0020] Figure 3 yes Figure 1 An enlarged view of the clutch portion shown in;

[0021] Figure 4 yes Figure 2 An enlarged view of the cover plate portion shown in;

[0022] Figure 5 It is a structural schematic diagram of the limit clamp ring and the lock clamp ring of the utility model;

[0023] Figure 6 yes Figure 5 A schematic diagram of the left side structure of the limit clamp in the state shown;

[0024] Figure 7 It is a structural schematic diagram of the locking plate of the utility model;

[0025] Figure 8 It is a schematic diagram of the structure of the ramp fast on the locking plate of the utility model;

[0026] Fig. 9It is a structural schematic diagram of the clutch of the utility model;

[0027] Fig.10 yes Fig. 9 The left side structure diagram of the clutch shown;

[0028] Fig.11 It is a structural schematic diagram of the common gear described in the utility model;

[0029] Fig.12 yes Fig.11 A schematic diagram of a top view of the common gear shown;

[0030] Fig.13 It is a structural schematic diagram of the transmission rod of the utility model;

[0031] Fig.14 yes Fig.13 The left side structural diagram of the transmission rod shown;

[0032] Fig.15 It is a schematic diagram of the structure of the utility model using four claw rods;

[0033] Fig.16 It is a structural schematic diagram of the connection between two claw rods on the same connecting section and a common gear of the utility model;

[0034] Fig.17 It is a schematic diagram of the utility model when connected with a traditional round wheel;

[0035] Fig.18 It is a schematic diagram of the state of the utility model when climbing stairs;

[0036] Fig.19 It is a schematic diagram of two connecting sections being arranged on the common gear of the utility model, one of the connecting sections being connected to a claw rod;

[0037] Fig. 20 It is a structural schematic diagram of the clamping ring guide plate 1 of the utility model;

[0038] Fig.21 It is a structural schematic diagram of the second clamping ring guide plate of the utility model;

[0039] Fig. 22 It is a structural schematic diagram of the end where the engaging bayonet of the clutch of the utility model is located;

[0040] Fig.23 It is a schematic diagram of the connection structure between the small outer cover and the outer cover of the utility model;

[0041] Fig.24 It is a structural schematic diagram when the small outer cover of the utility model is in an open state. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] like Figure 1-Figure 24 shown.

[0044] Embodiment 1: A wheel accessory comprises a circumferential base plate 11 and a claw rod 1, the middle part of the circumferential base plate 11 is rotatably connected to a common gear 2, the claw rod 1 is slidably connected to the circumferential base plate 11, a rack 8 is provided at one end of the claw rod 1 close to the common gear 2, the rack 8 is meshingly connected to the common gear 2, and a locking assembly for locking the claw rod 1 is provided on the circumferential base plate 11.

[0045] The common gear 2 is provided with more than two connecting sections along its axial direction, and the number of claw rods 1 connected to each layer of connecting sections is less than two. The number of claw rods 1 equipped with each circumferential bottom plate 11 of the utility model can be selected between 2 and N. In the case where each layer of connecting sections corresponds to two claw rods 1, the two claw rods 1 are symmetrically arranged on both sides of the common gear 2, and the claw rods 1 on the previous connecting section and the claw rods 1 on the next connecting section are mutually staggered. In this embodiment, two connecting sections and a total of four claw rods 1 are taken as an example. In this example, since the thickness of the rack 8 of the claw rod 1 is only half of the thickness of the common gear 2, the part of the common gear 2 that is higher will be used to install another pair of claw rods 1 in a horizontal shape superimposed on the vertical claw rods 1.

[0046] When in use, the detachable utility model is added to the outer end face side of the conventional round tire 24, and the tire bolt mounting hole 15 is provided on the circumferential bottom plate 11 to connect the wheel. The wheel and the utility model can also be integrated. When the common gear 2 rotates counterclockwise, the pair of claw rods 1 engaged on both sides thereof also extend synchronously to the upper and lower ends respectively. When the common gear 2 rotates clockwise, all the claw rods 1 can be retracted into the circumferential bottom plate 11. The claw rods 1 can be controlled to extend out of the circumferential bottom plate 11 by rotating the common gear 2.

[0047] By rotating the common gear 2, the length of the claw rod 1 extending out of the circumferential bottom plate 11 can be controlled. After the selected length is locked in position, the purpose of crossing different obstacles can be achieved, thereby improving the performance of the wheel to adapt to various road conditions. After the claw rod 1 is extended, it can not only be used for anti-skid, but also for climbing steps or stairs to increase the vehicle's passability. In addition, the extended length of the claw rod 1 can be controlled, and the extended length of the claw rod 1 can be adjusted according to the actual road conditions to achieve the purpose of anti-skid (crossing), thereby achieving the ability of the wheel to adapt to various road conditions. After the accessory is installed, the corresponding state adjustment is made according to different road conditions, which can not only facilitate the improvement of the vehicle's travel conditions on the aforementioned road surface, but also when the claw rod 1 of the accessory is fully retracted, closed or removed, it can still be used as an ordinary running wheel. That is, an accessory is added to be applicable to various road conditions and enhance the passability of vehicle tires.

[0048] One end of the claw rod 1 away from the rack 8 is a claw portion 27 , and the length direction of the claw portion 27 is in the radial direction of the circumferential bottom plate 11 .

[0049] The claw top is provided with an ice pick 16 or a small wheel 17. The ice pick 16 is used for anti-skid effect and can be conveniently passed through the ice surface, and replacing the small wheel 17 is conducive to climbing stairs or steps.

[0050] The circumferential bottom plate 11 is provided with a plurality of supporting columns 9, a boss 29 is provided at one end of the common gear 2 away from the circumferential bottom plate 11, a stabilizing plate 6 is sleeved on the boss 29, a plurality of supporting columns 9 all penetrate the stabilizing plate 6 and are movably connected thereto, a first limiting nut is provided on the supporting columns 9, the first limiting nut is located at the side of the stabilizing plate 6 away from the circumferential bottom plate 11, and a damping pad 22 is provided between the common gear 2 and the stabilizing plate 6. This structure is used to complete the installation of the common gear 2, limit it on the circumferential bottom plate 11 and ensure that the common gear 2 can rotate.

[0051] A cover plate 7 is provided at the end of the supporting column 9, and a through hole is provided in the middle of the cover plate 7. One end of the clutch 4 located outside the common gear 2 passes through the through hole. A circumferential groove 28 is provided on the side of the end of the clutch 4 located outside the common gear 2. A snap ring guide plate 1 42 and a snap ring guide plate 2 43 are respectively provided on both sides of the through hole on the cover plate 7. A guide groove 1 48 is provided between the snap ring guide plate 1 42 and the cover plate 7, and a limiting snap ring 25 is movably provided in the guide groove 1 48. A guide groove 2 49 is provided between the snap ring guide plate 2 43 and the cover plate 7, and a locking snap ring 26 is movably provided in the guide groove 2 49. The snap ring guide plate 1 42 is used to limit the limit snap ring 25 so that it can only move toward or away from the circumferential groove 28. The snap ring guide plate 2 43 is used to limit the locking snap ring 26 so that it can only move toward or away from the circumferential groove 28. The locking snap ring 26 and the limit snap ring 25 are misaligned along the axial direction of the clutch 4. The locking snap ring 26 is in a high position and is closer to the end of the clutch 4 that leaks out, and the limit snap ring 25 is in a low position and is farther from the end of the clutch 4 that leaks out.

[0052] The cover plate 7 is fixedly connected to one end of the spring 1 35 by a bolt 1 40, and the other end of the spring 1 35 is connected to the limit snap ring 25. The cover plate 7 is fixedly connected to one end of the spring 2 36 by a bolt 2 41, and the other end of the spring 2 36 is connected to the lock snap ring 26. The limit snap ring 25 and the lock snap ring 26 are both provided with a lever 47. The spring 1 35 is used to move the limit snap ring 25 toward the clutch 4, the spring 2 36 is used to move the lock snap ring 26 toward the clutch 4, and the lever 47 is used to facilitate the dragging of the lock snap ring 26 and the limit snap ring 25.

[0053] When in use, the first meshing part is the engaging bayonet 30, and the second meshing part is the protruding rod 31. The rotation of the common gear 2 depends on whether the engaging bayonet 30 of the clutch 4 is engaged with the protruding rod 31 in the common gear 2. The engaging bayonet 30 of the clutch 4 is engaged with the protruding rod 31 in the common gear 2. Rotating the clutch 4 can complete the rotation of the common gear 2 to achieve the extension and retraction of the claw rod 1. The exposed end of the clutch 4 has a flat square head.

[0054] A cover plate 7 is provided at the end of the support column 9, and a through hole is provided in the middle of the cover plate 7. One end of the clutch 4 located outside the common gear 2 passes through the through hole. A circumferential notch 28 is provided on the side of one end of the clutch 4 located outside the common gear 2. A limit snap ring 25 and a lock snap ring 26 are provided at the cover plate 7. When the limit snap ring 25 is located in the circumferential notch 28, the meshing portion 1 is meshed with the meshing portion 2. At this time, the flat square head of the outer end of the clutch 4 is inserted into the slotted wrench to rotate the clutch 4, which can drive the common gear 2 to rotate, and the telescopic state of the claw rod 1 can be changed. The limit snap ring 25 is connected to the cover plate 7 through a spring 1 35, and the lock snap ring 26 is connected to the cover plate 7 through a spring 2 36. The limit snap ring 25 and the lock snap ring 26 are respectively located on both sides of the through hole in the middle of the cover plate 7.

[0055] Example 2: Based on Example 1,

[0056] The clutch 4 is connected to the transmission rod 3, which is in transmission connection with the clutch 4, and the transmission rod 3 is connected to the motor 18. A reserved hole is set in the center of the transmission rod 3, and a pull rod 19 is set in the reserved hole. One end of the pull rod 19 is fixed to the clutch 4, one end of the clutch spring 13 contacts the end of the transmission rod 3, and the other end of the clutch spring 13 contacts the inner wall of the clutch 4. The motor 18 can be an electric motor 18, a hydraulic motor 18 or a pneumatic motor 18. A circle of grooves is set on the transmission rod 3 at the position of the protruding rod 31, and the protruding rod 31 is just located inside the groove to limit the axial movement of the transmission rod 3.

[0057] In this embodiment, the operation can be assisted by the motor 18 and the pull rod 19. The pull rod 19 passes through the inner hole of the transmission rod 3 and is fixed on the clutch 4. The push-pull clutch 4 is used to control it to engage with the protruding rod 31 in the common gear 2 to adjust the extension of the claw rod 1. The rotation of the motor 18 directly drives the rotation of the transmission rod 3. The outer wall of the transmission rod 3 and the inner wall of the clutch 4 are in a state of mutual cooperation. The transmission rod 3 can drive the clutch 4 to rotate, but it does not affect the axial movement of the clutch 4. Therefore, the transmission rod 3 can drive the clutch 4 to rotate, thereby controlling the extension and contraction adjustment of the claw rod 11.

[0058] Embodiment 3: Based on Embodiment 1 or Embodiment 2,

[0059] The locking assembly includes a locking plate 5, which is sleeved on the end of the common gear 2 and movably connected thereto, a locking spring 12 is arranged between the locking plate 5 and the steady-state plate 6, and a ramp block 32 for locking purposes is arranged on the end surface of the locking plate 5 facing the cover plate 7, and the number of the ramp blocks 32 is consistent with the number of the claw rods 1, and a pressure rod 10 is rotatably connected to the circumferential bottom plate 11, and a fulcrum frame 14 is arranged at the rotating connection, the fulcrum frame 14 is fixed to the circumferential bottom plate 11, and the fulcrum frame 14 is rotatably connected to the pressure rod 10, and the number and position of the pressure rod 10 match the claw rod 1, one end of the pressure rod 10 is located at the ramp block 32, and the other end of the pressure rod 10 is located at the inner side of the edge of the circumferential bottom plate 11 and above the claw rod,

[0060] At the claw rod 1, a polygonal hole 34 is set in the middle of the locking plate 5, and a matching one is set on the clutch 4. When the meshing part 1 is engaged with the meshing part 2, it is separated from the meshing part 2, and when the meshing part 1 is separated from the meshing part 2, it is located inside. A top block 37 is set at one end of the pressure rod 10 located at the claw rod 1.

[0061] When in use, after the telescopic state of the claw rod 1 is selected, it must be locked in this state before normal use. The following locking measures can be selected. The locking measures are completed by the locking plate 5, the pressure rod 10 combination and the locking spring 12, the stabilizing plate 6 and the damping pad 22 thereunder.

[0062] Assuming that the clutch 4 and the locking plate 5 are in an engaged state in the initial state, when this state needs to be changed, first push the lever 47 to the right by hand to disengage the locking snap ring 26 in the high position from the circumferential notch 28 of the clutch 4, then use a slotted wrench to insert the flat square head on the top of the clutch 4, and push the clutch 4 along the axis, so that the four semicircular engaging snap rings 30 of the clutch 4 are pushed to engage with the convex rod 31 in the common gear 2, and at the same time, the limiting snap ring 25 in the low position on the left side, which was originally close to the clutch 4, is pushed into the circumferential notch 28 of the clutch 4 by the spring 35 behind it. At this time, the exposed polygonal portion 33 of the clutch 4 has completely disengaged from the locking plate 5, and with the rotation of the slotted wrench and the common gear 2, the telescopic state of the claw rod 1 is changed. It can be seen from the above operation process that the circumferential notch 28 exposed on the clutch 4 is either occupied by the high-positioned locking ring 26, in which case the clutch 4 is only engaged with the locking plate 5; or occupied by the low-positioned limiting ring 25, in which case the clutch 4 is only engaged with the protruding rod 31 in the common gear 2. Next to the locking ring 26 is a stop plate 23 that can press on the clutch 4. The stop plate 23 is connected to the cover plate 7 by bolts 46. When the stop plate 23 is in the Figure 4 After the position shown is tightened, it is only used to completely stop various operations of the clutch 4. Usually, the stop plate 23 is in a standby state. When the stop plate 23 is used, the snap ring 26 must be inserted into the circumferential notch 28 of the clutch 4.

[0063] After the claw rod 1 is in the telescopic state, the push lever 47 is pushed to push the limit snap ring 25 to the left and completely disengage from the circumferential notch 28 of the clutch 4. The clutch 4 is pushed toward the polygonal hole 34 of the locking plate 5 by the built-in clutch spring 13. The polygonal hole 34 is engaged with the polygonal part 33 and the lock snap ring 26 is pushed into the circumferential notch 28 of the clutch 4 and disengaged from the convex rod 31 in the common gear 2. The polygonal hole 34 is matched with the polygonal part 33, but it is also possible that the polygonal hole 34 is not aligned with the polygonal part 33. In this case, the clutch 4 can be slightly rotated. When the polygonal hole 34 is aligned with the polygonal part 33, the polygonal part 33 will naturally be in the polygonal hole 34 to achieve engagement. The slotted wrench continues to be sleeved on the exposed flat square head of the clutch 4 and rotated clockwise to complete the locking operation, thereby completing the locking of the selected state. Obviously, if the slotted wrench is operated in the reverse direction at this time, it is an unlocking operation. The locking principle is: there are multiple curved ramp blocks 32 evenly distributed on the edge of the large surface of the locking plate 5. The unfolded figure of these curved ramp blocks 32 from low to high is a triangle. Each ramp block 32 will gradually move from the low end to the high end of the ramp block 32 like a wedge as the locking plate 5 rotates, and gradually lifts the end of the pressure rod 10 in the process, which is equivalent to the power point in the lever. At this time, the other end of the pressure rod 10 is close to the position of the claw rod 1 to press the claw rod 1. The relative pressure rod 10 will generate a reaction force on the locking plate 5. The locking plate 5, the locking spring 12, the steady plate 6 and the damping pad 22 jointly bear the force of the aforementioned power point pressing down. This force presses on the common gear 2, thereby achieving the damping and stopping effect of the selected state of the common gear 2 and all the claw rods 1. Since the distance from the power point to the fulcrum is several times the distance from the fulcrum to the resistance point (i.e., the top block), the torque formed will cause the fulcrum to the resistance point, and a huge pressure will be formed, which is enough to compact the claw rod 1 under the top block.

[0064] By jointly locking the common gear 2 and the claw rod 1 at the outlet end of the adjacent circumferential bottom plate 11, the purpose of locking the state of the claw rod 1 is well achieved. At this time, the claw rod 1 is strongly pressed by the combined top block of the pressure rod 10 at the outlet end of the circumferential bottom plate 11. In addition, the common gear 2 engaged with the rack 8 of the claw rod 1 is also squeezed by the locking spring 12 under the locking plate 5 and the steady-state plate 6, and is also in a damped and locked state. Therefore, the common pressure on the front and rear ends of each claw rod 1 makes the selected states of each claw rod 1 in the circumferential bottom plate 11 firmly locked, which is used to ensure the reliable operation of the overall structure. Obviously, when the telescopic state of the claw rod 1 is to be changed, the first action is to reverse the clutch 4, so that the locking plate 5 is reversed and unlocked, and then the clutch 4 is pressed down, thereby driving the common gear 2 to rotate and completing the telescopic operation of the claw rod 1.

[0065] The locking assembly in this embodiment can also be operated with the assistance of the motor 18 and the pull rod 19. The pull rod 19 passes through the inner hole of the transmission rod 3 and is fixed on the clutch 4. The push-pull clutch 4 is used to control its options: engaging with the locking plate 5 in a locked or unlocked state, or disengaging from the locking plate 5 and engaging with the protruding rod 31 in the common gear 2 to adjust the extension of the claw rod 1. The rotation of the motor 18 directly drives the rotation of the transmission rod 3. The outer wall of the transmission rod 3 and the inner wall of the clutch 4 are in a state of mutual cooperation, thus driving the clutch 4 to rotate. The power of the pull rod 19 can be realized by an electric cylinder, a hydraulic cylinder or a pneumatic cylinder.

[0066] Obviously, when using this method, the stop plate 23 needs to be rotated to a position where it will not interfere with the clutch after loosening the bolt four 46, and after the bolt one 40 and the bolt two 41 are unscrewed, the limit clamp 25 and the locking clamp 26 are moved to the positions where the spring one 35 and the spring two 36 were originally fixed, and then fixed with the bolt one 40 and the bolt two 41.

[0067] After the telescopic state of the claw rod 1 is locked, when the external top of the claw rod 1 is replaced with different parts, there will be more functional options. After replacing the ice cone 16, it is obviously convenient to pass through the ice surface; after replacing the small wheel 17 and adjusting the external extension length appropriately, it is more conducive to climbing stairs. It is precisely because the extension length of the claw rod 1 is adjustable and there is room for further lengthening that the wheel installed with the utility model can achieve the effect of both climbing stairs and not damaging the edge of the stairs. In the example of climbing stairs with a multi-claw rod 1 with a traditional fixed arm length, the vibration when the claw rod 1 and the claw rod 1 are alternated is obvious. In the utility model, since the claw rod 1 is installed on the outside of the traditional road running car tire, that is, there is a traditional car tire between the two adjacent claw rods 1, the traditional car tire is squeezed during climbing, which is equivalent to acting as a buffer when the claw rod 1 and the claw rod 1 are replaced, and this effect exists objectively. Obviously, if the traditional car tire is removed and only the multi-claw rod 1 is replaced, the vibration will be aggravated. The clutch spring 13, the locking spring 12, the spring 1 35 and the spring 2 36 are all compression springs.

[0068] An outer cover 21 is arranged on the circumferential bottom plate 11. All components of the utility model except the circumferential bottom plate 11 are located inside the outer cover 21. An outlet for the claw rod 1 to extend is reserved on the outer cover 21. An outlet end sealing rubber 20 is arranged at the outlet. The flat square head of the clutch 4 extends out of the outer cover 21. An opening is arranged in the middle of the outer cover 21. A small outer cover 44 is arranged at the opening. One end of the small outer cover 44 is rotatably connected to the outer cover 21, and the other end of the small outer cover 44 is connected to the outer cover 21 by bolt three 45.

[0069] The above are only preferred embodiments of the present invention.

Claims

1. A wheel accessory, characterized in that: The invention comprises a circumferential bottom plate (11) and a claw rod (1), wherein the middle part of the circumferential bottom plate (11) is rotatably connected to a common gear (2), the claw rod (1) is slidably connected to the circumferential bottom plate (11), a rack (8) is provided at one end of the claw rod (1) close to the common gear (2), the rack (8) is meshingly connected to the common gear (2), and a locking component for locking the position of the claw rod (1) is provided on the circumferential bottom plate (11).

2. A wheel accessory according to claim 1, characterized in that: The common gear (2) is provided with more than two connecting sections along its axial direction, and the number of claw rods (1) connected by each layer of connecting sections is less than two.

3. A wheel accessory according to claim 2, characterized in that: One end of the claw rod (1) away from the rack (8) is a claw portion (27), and the length direction of the claw portion (27) is in the radial direction of the circumferential bottom plate (11).

4. A wheel accessory according to claim 2, characterized in that: An ice cone (16) or a small wheel (17) is arranged on the top end of the claw portion.

5. A wheel accessory according to claim 3 or 4, characterized in that: The circumferential bottom plate (11) is provided with a plurality of supporting columns (9); a boss (29) is provided at one end of the common gear (2) away from the circumferential bottom plate (11); a stabilizing plate (6) is sleeved on the boss (29); the plurality of supporting columns (9) all penetrate the stabilizing plate (6) and are movably connected thereto; a first limiting nut is provided on the supporting column (9); and the first limiting nut is located on a side of the stabilizing plate (6) away from the circumferential bottom plate (11).

6. A wheel accessory according to claim 5, characterized in that: A clutch (4) is disposed inside one end of the common gear (2) close to the stabilizing plate (6), a clutch spring (13) is disposed inside the clutch (4), a meshing portion 1 is disposed at the end of the clutch (4) located inside the common gear (2), a meshing portion 2 capable of transmitting with the meshing portion 1 is disposed inside the common gear (2), and the clutch (4) extends into the common gear (2) to compress the clutch spring (13) and mesh the meshing portion 1 with the meshing portion 2.

7. A wheel accessory according to claim 6, characterized in that: A cover plate (7) is provided at the end of the support column (9), a through hole is provided in the middle of the cover plate (7), one end of the clutch (4) located outside the common gear (2) passes through the through hole, a circumferential notch (28) is provided on the side of the end of the clutch (4) located outside the common gear (2), a snap ring guide plate (42) and a snap ring guide plate (43) are provided on both sides of the through hole on the cover plate (7), a guide groove (48) is provided between the snap ring guide plate (42) and the cover plate (7), a limit snap ring (25) is movably provided in the guide groove (48), a guide groove (49) is provided between the snap ring guide plate (43) and the cover plate (7), a locking snap ring (26) is movably provided in the guide groove (49).

8. A wheel accessory according to claim 7, characterized in that: One end of a spring one (35) is fixedly connected to the cover plate (7) by means of a bolt one (40), and the other end of the spring one (35) is connected to a limit clamp (25). One end of a spring two (36) is fixedly connected to the cover plate (7) by means of a bolt two (41), and the other end of the spring two (36) is connected to a locking clamp (26). Both the limit clamp (25) and the locking clamp (26) are provided with a lever (47).

9. A wheel accessory according to claim 8, characterized in that: The clutch (4) is transmission-connected with a transmission rod (3), the transmission rod (3) is connected to a motor (18), a reserved hole is arranged at the center of the transmission rod (3), a pull rod (19) is arranged in the reserved hole, one end of the pull rod (19) is fixed to the clutch (4), one end of a clutch spring (13) contacts the end of the transmission rod (3), and the other end of the clutch spring (13) contacts the inner wall of the clutch (4).

10. A wheel accessory according to claim 9, characterized in that: The locking assembly comprises a locking plate (5), the locking plate (5) being sleeved on the end of the common gear (2) and being movably connected thereto, a locking spring (12) being arranged between the locking plate (5) and the stabilizing plate (6), a ramp block (32) being arranged on the end surface of the locking plate (5) facing the cover plate (7), the number of the ramp blocks (32) being the same as the number of the claw rods (1), a pressure rod (10) being rotatably connected to the circumferential bottom plate (11), the number and position of the pressure rods (10) being matched with the claw rods (1), one end of the pressure rod (10) being located at the ramp block, The other end of the pressure rod (10) is located at the inner side of the edge of the circumferential bottom plate (11) and above the claw rod (1). A polygonal hole (34) is provided in the middle of the locking plate (5). A polygonal portion (33) matching the polygonal hole is provided on the clutch (4). When the meshing portion 1 is meshed with the meshing portion 2, the polygonal hole (34) is separated from the polygonal portion (33). When the meshing portion 1 is separated from the meshing portion 2, the polygonal portion (33) is located inside the polygonal hole (34). A top block (37) is provided at one end of the pressure rod (10) located at the claw rod (1).

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