Wheel supporting shaft reinforcing device and AGV trolley

Abstract

The utility model relates to a wheel supporting shaft reinforcing device and an AGV. The wheel supporting shaft is provided with a fixed end fixed to the rack and a suspension end opposite to the fixed end, the wheel supporting shaft reinforcing device comprises a reinforcing piece, the reinforcing piece comprises a first clamping part, a second clamping part and a connecting part, the first clamping part and the second clamping part are oppositely arranged, and the connecting part is connected with the first clamping part and the second clamping part; the side, facing the second clamping part, of the first clamping part abuts against the suspension end, the side, facing the first clamping part, of the second clamping part is connected with the side, back to the fixed end, of the rack, and a clamping space used for clamping the wheel supporting shaft is formed between the first clamping part and the second clamping part. Due to the fact that the clamping force can be applied to the two ends of the wheel supporting shaft, the wheel supporting shaft can be reliably fixed to the machine frame, the structural strength of the wheel supporting shaft is improved, and therefore when the wheel supporting shaft bears large radial tension, the large radial tension can reliably bear and reduce the situation that the wheel supporting shaft and the machine frame are broken.

Description

Technical Field

[0001] This application relates to the field of transmission mechanism reinforcement devices, and in particular to wheel support axle reinforcement devices and AGV trolleys. Background Technology

[0002] Tobacco shreds in the tobacco storage area are typically packaged in tobacco boxes and transported out by AGVs (Automated Guided Vehicles). The AGVs have forks at the front, which clamp and release the tobacco boxes by moving simultaneously in two directions via two chains. However, because the tobacco boxes that the AGV forks need to clamp often weigh more than 600 kg, the fork sprocket support shaft is subjected to significant radial tension over a long period, leading to breakage between the sprocket support shaft and the frame. Repairs are time-consuming due to the large size of the AGVs and limited space, severely impacting the conveying efficiency of the tobacco storage area. Utility Model Content

[0003] Therefore, it is necessary to provide a wheel support shaft reinforcement device and an AGV trolley to address the problem of current chain wheel support shaft breakage affecting the conveying efficiency of tobacco silos.

[0004] On one hand, this application provides a wheel support shaft reinforcement device, wherein the wheel support shaft has a fixed end fixed to the frame and a suspended end opposite to the fixed end, and the wheel support shaft reinforcement device includes:

[0005] The reinforcing member includes a first clamping part, a second clamping part, and a connecting part. The first clamping part and the second clamping part are disposed opposite to each other, and the connecting part connects the first clamping part and the second clamping part.

[0006] The side of the first clamping part facing the second clamping part abuts against the suspension end, and the side of the second clamping part facing the first clamping part is connected to the side of the frame facing away from the fixed end. A clamping space for clamping wheel support shaft is formed between the first clamping part and the second clamping part.

[0007] In one embodiment, a limiting hole is provided on the side of the first clamping part facing the second clamping part. The limiting hole has a closed groove bottom to abut against one end of the wheel support shaft, and the inner peripheral wall of the limiting hole cooperates with the outer peripheral wall of the wheel support shaft.

[0008] In one embodiment, the first clamping part includes a clamping part and a reinforcing part, a limiting hole is provided in the clamping part, the clamping part is disc-shaped and is concentrically arranged with the limiting hole; the reinforcing part connects the clamping part and the connecting part.

[0009] In one embodiment, the reinforcing part includes a first inclined side and a second inclined side, and the center line of the clamping part is located on opposite sides of the clamping part.

[0010] One end of the first inclined side is tangent to the clamping part, and the other end is connected to one side of the connecting part. One end of the second inclined side is tangent to the clamping part, and the other end is connected to the opposite side of the connecting part.

[0011] In one embodiment, the wheel support shaft reinforcement device further includes an auxiliary clamping member, which is disposed on the side of the second clamping part facing the first clamping part and clamped between the frame and the second clamping part.

[0012] In one embodiment, the auxiliary clamping member is connected to the second clamping part, and the second clamping part is connected to the frame via the auxiliary clamping member.

[0013] In one embodiment, the second clamping part has a plurality of first connecting holes, the auxiliary clamping member has a plurality of second connecting holes, all the first connecting holes are arranged at intervals around the extension line of the axis of the wheel support shaft, all the first connecting holes and all the second connecting holes are arranged in a one-to-one correspondence, and the wheel support shaft reinforcing device further includes a plurality of first connecting members, each of the first connecting members passing through a corresponding first connecting hole and connecting to a corresponding second connecting hole.

[0014] In one embodiment, the wheel support shaft reinforcement device further includes a shim disposed between the second clamping part and the auxiliary clamping member.

[0015] In one embodiment, the second clamping part has a through-hole for preventing damage, and the projection of the preventing hole toward the wheel support shaft at least partially overlaps with the wheel support shaft in the direction opposite to the first clamping part and the second clamping part.

[0016] In another aspect of this application, an AGV (Automated Guided Vehicle) is provided, including a frame, a sprocket, a wheel support shaft, and a wheel support shaft reinforcement device as described in any of the above embodiments; the wheel support shaft has a fixed end fixed to the frame and a suspended end opposite to the fixed end, and the sprocket is mounted on the wheel support shaft.

[0017] The aforementioned wheel support shaft reinforcement device and AGV trolley, through the clamping space formed by the first clamping part and the second clamping part, can apply clamping force to both ends of the wheel support shaft, enabling the wheel support shaft to be reliably fixed to the frame and improving the structural strength of the wheel support shaft. This allows it to reliably withstand large radial tensile forces, reducing the likelihood of breakage between the wheel support shaft and the frame. Therefore, the wheel support shaft reinforcement device of this application embodiment can improve the conveying efficiency of the tobacco storage chamber. Attached Figure Description

[0018] Figure 1 This is a partial structural schematic diagram of the wheel support shaft reinforcement device in some embodiments of this application applied to an AGV trolley.

[0019] Figure 2 for Figure 1A schematic view of the structure of the reinforcing member in the wheel support shaft reinforcement device shown.

[0020] Figure 3 This is a partial structural diagram of an AGV (Automated Guided Vehicle) in some embodiments of this application.

[0021] Figure 4 for Figure 1 A schematic view of the auxiliary clamping component in the wheel support shaft reinforcement device shown.

[0022] Explanation of reference numerals in the attached figures:

[0023] Wheel support shaft reinforcement device 100, reinforcement 10, first clamping part 11, limiting hole 111, clamping part 112, reinforcement part 113, first inclined side 1131, second inclined side 1132, second clamping part 12, first connecting hole 121, prevention hole 122, connecting part 13, auxiliary clamping part 20, second connecting hole 21, first connecting part 30, wheel support shaft 200, frame 300, sprocket 400, chain 500, bushing 600, clamping space A. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0030] Figure 1 This is a partial structural schematic diagram of the wheel support shaft reinforcement device in some embodiments of this application applied to an AGV trolley. Figure 2 for Figure 1 A schematic view of the structure of the reinforcing member in the wheel support shaft reinforcement device shown. Figure 3 This is a partial structural diagram of an AGV (Automated Guided Vehicle) in some embodiments of this application. See also... Figures 1-3This application provides a wheel support shaft reinforcement device 100, which includes a reinforcing member 10. The wheel support shaft 200 has a fixed end fixed to a frame 300 and a suspended end opposite to the fixed end. It should be noted that in this embodiment, the wheel support shaft 200 is a shaft structure connected to a sprocket 400 to support the sprocket 400. In other embodiments, the wheel support shaft 200 may also be a shaft structure connected to a pulley to support the pulley, or it may be other transmission wheel structures; no specific limitation is imposed. A chain 500 is connected to the sprocket 400, and the chain 500 connects to another sprocket, thereby driving the mechanism to move. The wheel support shaft reinforcement device 100 of this application embodiment can be applied to AGV trolleys with forks, or to other equipment suitable for the wheel support shaft reinforcement device 100; no specific limitation is imposed.

[0031] The reinforcing member 10 includes a first clamping part 11, a second clamping part 12, and a connecting part 13. The first clamping part 11 and the second clamping part 12 are disposed opposite to each other, and the connecting part 13 connects the first clamping part 11 and the second clamping part 12. The side of the first clamping part 11 facing the second clamping part 12 abuts against the suspension end, and the side of the second clamping part 12 facing the first clamping part 11 is connected to the side of the frame 300 facing away from the fixed end. A clamping space A is formed between the first clamping part 11 and the second clamping part for clamping the support shaft 200 of the clamping wheel.

[0032] Thus, the clamping space A formed by the first clamping part 11 and the second clamping part 12 can apply clamping force to both ends of the wheel support shaft 200, so that the wheel support shaft 200 can be reliably fixed on the frame 300, and the structural strength of the wheel support shaft 200 is improved. This allows the wheel support shaft 200 to reliably withstand large radial tensile forces, reducing the possibility of breakage between the wheel support shaft 200 and the frame 300. Therefore, the wheel support shaft strengthening device 100 of this embodiment can improve the conveying efficiency of the tobacco storage chamber.

[0033] Specifically, in the embodiments of this application, the first clamping part 11 has a limiting hole 111 on the side facing the second clamping part 12. The limiting hole 111 has a closed groove bottom to abut against one end of the wheel support shaft 200, and the inner peripheral wall of the limiting hole 111 cooperates with the outer peripheral wall of the wheel support shaft 200.

[0034] The inner peripheral wall of the limiting hole 111 is matched with the outer peripheral wall of the wheel support shaft 200. This means that the shapes of the inner peripheral wall of the limiting hole 111 and the outer peripheral wall of the wheel support shaft 200 are compatible and the distance between them is very small. In this way, the wheel support shaft 200 can be radially limited within the limiting hole 111.

[0035] Therefore, the setting of the limiting hole 111 is simple in structure. On the one hand, the bottom of the groove closed by the limiting hole 111 abuts against one end of the wheel support shaft 200, thereby achieving axial limiting of the wheel support shaft 200. On the other hand, the inner peripheral wall of the limiting hole 111 cooperates with the outer peripheral wall of the wheel support shaft 200, thereby achieving radial limiting of the wheel support shaft 200. Thus, the wheel support shaft 200 can be more reliably clamped in the clamping space A.

[0036] Specifically, the limiting hole 111 is a circular hole that matches the wheel support shaft 200.

[0037] Furthermore, the first clamping part 11 includes a clamping part 112 and a reinforcing part 113. A limiting hole 111 is provided in the clamping part 112. The clamping part 112 is disc-shaped and concentrically arranged with the limiting hole 111. The reinforcing part 113 connects the clamping part 112 and the connecting part 13.

[0038] Because the disc-shaped clamping part 112 is concentrically arranged with the limiting hole 111, when the limiting hole 111 mates with the wheel support shaft 200, the force on the outer periphery of the wheel support shaft 200 is uniform, making the limiting and clamping of the wheel support shaft 200 more reliable. Furthermore, the reinforcing part 113 connects the clamping part 112 and the connecting part 13, making the position and structural strength of the clamping part 112 more reliable, thus providing a more reliable clamping force.

[0039] Furthermore, the reinforcing part 113 includes a first inclined side 1131 and a second inclined side 1132. The center lines of the clamping part 112 opposite to the first inclined side 1131 and the second inclined side 1132 are located on opposite sides of the clamping part 112. One end of the first inclined side 1131 is tangent to the clamping part 112, and the other end is connected to one side of the connecting part 13. One end of the second inclined side 1132 is tangent to the clamping part 112, and the other end is connected to the opposite side of the connecting part 13.

[0040] By connecting the reinforcing part 113 to the clamping part 112 and the connecting part 13 in a tangential manner, the structural strength of the clamping part 112 can be improved, making the clamping of the clamping part 112 more reliable.

[0041] Combination Figure 4 In some embodiments, the wheel support shaft strengthening device 100 further includes an auxiliary clamping member 20, which is disposed on the side of the second clamping part 12 facing the first clamping part 11 and clamped between the frame 300 and the second clamping part 12.

[0042] When the first clamping part 11 is provided with a limiting hole 111, before the limiting hole 111 of the first clamping part 11 is engaged with one end of the wheel support shaft 200, the end face of the wheel support shaft 200 needs to slide past the end face of the first clamping part 11 before entering the limiting hole 111. Therefore, after the limiting hole 111 of the first clamping part 11 is engaged with the wheel support shaft 200, the second clamping part 12 and the frame 300 have a certain distance along the axial direction. This distance will cause the clamping space A to not be formed between the first clamping part 11 and the second clamping part 12. Therefore, this application adds an auxiliary clamping member 20 between the frame 300 and the second clamping part 12 to fill the distance, so that the first clamping part 11 and one end of the wheel support shaft 200 can be reliably abutted, and a clamping space A for clamping the wheel support shaft 200 is formed between the first clamping part 11 and the second clamping part 12.

[0043] Optionally, the auxiliary clamping member 20 is plate-shaped. In the embodiments of this application, the first clamping part 11 and the second clamping part 12 are also plate-shaped. In this way, the plate-shaped auxiliary clamping member 20 can fit against the surface of the frame 300 and the plate-shaped second clamping part 12, making the clamping force provided by the first clamping part 11 and the second clamping part 12 more reliable.

[0044] In the embodiments of this application, the auxiliary clamping member 20 is connected to the second clamping part 12, and the second clamping part 12 is connected to the frame 300 through the auxiliary clamping member 20.

[0045] In other words, the second clamping part 12 is not directly connected to the frame 300, but indirectly connected through the auxiliary clamping part 20. This reduces the number of connection holes required when the second clamping part 12 is connected to the frame 300, and improves the structural reliability of the frame 300.

[0046] Specifically, along the direction opposite to the first clamping part 11 and the second clamping part 12, that is, along the axial direction of the wheel support shaft 200, a portion of the auxiliary clamping member 20 is exposed in the second clamping part 12, and the exposed portion of the auxiliary clamping member 20 is connected to the frame 300. Optionally, the exposed portion of the auxiliary clamping member 20 is connected to the frame 300 by bolts or screws.

[0047] In some embodiments, the second clamping part 12 has a plurality of first connecting holes 121, the auxiliary clamping member 20 has a plurality of second connecting holes 21, all the first connecting holes 121 are arranged at intervals around the extension line of the axis of the wheel support shaft 200, and all the first connecting holes 121 and all the second connecting holes 21 are arranged in a one-to-one correspondence. The wheel support shaft reinforcing device also includes a plurality of first connecting members 30, each of the first connecting members 30 passing through a corresponding first connecting hole 121 and connecting to a corresponding second connecting hole 21.

[0048] The interval arrangement of the extended axis of the wheel support shaft 200 referred to here can also be the center line of the clamping part 112 or the center line of the limiting hole 111.

[0049] By setting multiple first connecting holes 121 at intervals around the extended axis of the wheel support shaft 200, the first connecting member 30 connecting the second clamping part 12 and the auxiliary clamping member 20 is arranged at intervals around the extended axis of the wheel support shaft 200, thereby improving the connection reliability between the second clamping part 12 and the auxiliary clamping member 20.

[0050] In other embodiments, the wheel support shaft strengthening device 100 may also eliminate the setting of the auxiliary clamping member 20 and the limiting hole 111 of the first clamping part 11, so that the end face of the first clamping part 11 directly abuts against the end face of the wheel support shaft 200, and the end face of the second clamping part 12 directly abuts against the frame 300, thereby achieving the clamping of the wheel support shaft 200.

[0051] In some embodiments, shims can be provided between the second clamping part 12 and the frame 300, or between the second clamping part 12 and the auxiliary clamping member 20, and between the auxiliary clamping member 20 and the frame 300, to reduce axial clearance and improve clamping reliability. When the shim is provided between the second clamping part 12 and the auxiliary clamping member 20, since the second clamping part 12 and the auxiliary clamping member 20 are connected by the first connecting member 30, the shim's placement between them ensures reliable operation.

[0052] In addition, in some cases, the wheel support shaft 200 may have cracks of varying degrees at the connection with the frame 300 before the wheel support shaft reinforcement device 100 is installed. In order to prevent the wheel support shaft 200 from breaking with the frame 300 during subsequent use, this application designs a second clamping part 12 with a through-hole 122. Along the direction opposite to the first clamping part 11 and the second clamping part 12, the projection of the prevention hole 122 toward the wheel support shaft 200 at least partially overlaps with the wheel support shaft 200.

[0053] Thus, after the wheel support shaft 200 breaks from the frame 300, holes can be drilled into the frame 300 and the wheel support shaft 200 through the prevention hole 122 of the second clamping part 12, and threads can be tapped on the wheel support shaft 200. The second clamping part 12, the frame 300 and the wheel support shaft 200 can be connected by screws, so that the wheel support shaft 200 can be fixed on the frame 300 again for continued use.

[0054] It should be noted that when there is an auxiliary clamping member 20 between the second clamping part 12 and the frame 300, the auxiliary clamping member 20 also needs to have a hole corresponding to the position of the prevention hole 122 for drilling and screw insertion.

[0055] In the embodiments of this application, the center line of the prevention hole 122 coincides with the extension line of the axis of the wheel support shaft 200. This allows the screw to be connected to the center position of the wheel support shaft 200, improving connection reliability.

[0056] In another aspect of this application, an AGV trolley is provided, including a frame 300, a sprocket 400, a wheel support shaft 200, and a wheel support shaft reinforcement device 100 in any of the above embodiments; the wheel support shaft 200 has a fixed end fixed to the frame 300 and a suspended end opposite to the fixed end, and the sprocket 400 is mounted on the wheel support shaft 200.

[0057] The aforementioned AGV trolley, through the clamping space A formed by the first clamping part 11 and the second clamping part 12, can apply clamping force to both ends of the wheel support shaft 200, so that the wheel support shaft 200 can be reliably fixed on the frame 300, and the structural strength of the wheel support shaft 200 is improved. Therefore, when the wheel support shaft 200 is subjected to a large radial tensile force, it can reliably bear the load, reducing the possibility of breakage between the wheel support shaft 200 and the frame 300. Therefore, the wheel support shaft strengthening device 100 of this application embodiment can improve the conveying efficiency of the tobacco storage chamber.

[0058] In some embodiments, the AGV trolley further includes a bushing 600, the fixed end of the wheel support shaft 200 is connected to the bushing 600, and is connected to the frame 300 through the bushing 600.

[0059] In this way, the connection reliability between the wheel support shaft 200 and the frame 300 can be improved by using the bushing 600.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A wheel support shaft reinforcement device, characterized in that, The wheel support shaft has a fixed end fixed to the frame and a suspended end opposite to the fixed end. The wheel support shaft reinforcement device includes: The reinforcing member includes a first clamping part, a second clamping part, and a connecting part, wherein the first clamping part and the second clamping part are disposed opposite to each other, and the connecting part connects the first clamping part and the second clamping part; The side of the first clamping part facing the second clamping part abuts against the suspension end, and the side of the second clamping part facing the first clamping part is connected to the side of the frame facing away from the fixed end. A clamping space for clamping the wheel support shaft is formed between the first clamping part and the second clamping part.

2. The wheel support shaft reinforcement device according to claim 1, characterized in that, The first clamping part has a limiting hole on the side facing the second clamping part. The limiting hole has a closed groove bottom to abut against one end of the wheel support shaft. The inner peripheral wall of the limiting hole cooperates with the outer peripheral wall of the wheel support shaft.

3. The wheel support shaft reinforcement device according to claim 2, characterized in that, The first clamping part includes a clamping part and a reinforcing part. The limiting hole is provided in the clamping part. The clamping part is disc-shaped and concentrically arranged with the limiting hole. The reinforcing part connects the clamping part and the connecting part.

4. The wheel support shaft reinforcement device according to claim 3, characterized in that, The reinforcing part includes a first inclined side and a second inclined side, with the first inclined side and the second inclined side located on opposite sides of the center line of the clamping part; One end of the first inclined side is tangent to the clamping part, and the other end is connected to one side of the connecting part. One end of the second inclined side is tangent to the clamping part, and the other end is connected to the opposite side of the connecting part.

5. The wheel support shaft reinforcement device according to claim 2, characterized in that, The wheel support shaft strengthening device also includes an auxiliary clamping member, which is disposed on the side of the second clamping part facing the first clamping part and clamped between the frame and the second clamping part.

6. The wheel support shaft reinforcement device according to claim 5, characterized in that, The auxiliary clamping member is connected to the second clamping part, and the second clamping part is connected to the frame through the auxiliary clamping member.

7. The wheel support shaft reinforcement device according to claim 6, characterized in that, The second clamping part has a plurality of first connecting holes, and the auxiliary clamping member has a plurality of second connecting holes. All the first connecting holes are arranged at intervals around the extension line of the axis of the wheel support shaft. All the first connecting holes and all the second connecting holes are arranged in a one-to-one correspondence. The wheel support shaft reinforcing device also includes a plurality of first connecting members. Each first connecting member passes through a corresponding first connecting hole and is connected to a corresponding second connecting hole.

8. The wheel support shaft reinforcement device according to claim 6, characterized in that, The wheel support shaft reinforcement device also includes a shim, which is disposed between the second clamping part and the auxiliary clamping member.

9. The wheel support shaft reinforcement device according to claim 1, characterized in that, The second clamping part has a through-hole for prevention. Along the direction opposite to the first clamping part and the second clamping part, the projection of the prevention hole toward the wheel support shaft at least partially overlaps with the wheel support shaft.

10. An AGV (Automated Guided Vehicle) trolley, characterized in that, It includes a frame, a sprocket, a wheel support shaft, and a wheel support shaft reinforcement device as described in any one of claims 1 to 9; the wheel support shaft has a fixed end fixed to the frame and a suspended end opposite to the fixed end, and the sprocket is mounted on the wheel support shaft.

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