Fender transportation frame

Abstract

The utility model relates to the technical field of automobile part machining, and discloses a fender transportation frame which comprises a supporting assembly and a fixing assembly, the supporting assembly comprises a lower base, a supporting frame, a connecting rod and a supporting rod, and the fixing assembly comprises a fixing block, a limiting clamp, a sliding rod, a lead screw and a limiting clamp driving piece; the lower base is arranged above the rolling wheels to support the lifting plate, the guide rods, the lifting rods, the fixing blocks and the supporting frame, and the supporting frame is arranged above the lower base to provide support for the connecting rods, the supporting rods, the sliding rods, the lead screws, the limiting clamp driving pieces, the guide rods, the lifting rods and the lifting driving pieces; the multiple fixing blocks are arranged on the connecting rod, the supporting rod, the lifting plate and the lower base correspondingly so as to limit the fender. The limiting clamps are arranged on the supporting frame, the sliding rod and the lead screw in pairs, the limiting clamp driving piece is fixed to the supporting frame and rotationally connected with the lead screw, and the limiting clamp driving piece drives the lead screw to drive the limiting clamps to clamp the fender.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile part processing, and particularly relates to a fender transport rack. Background Art

[0002] An automobile fender is an outer body panel that covers the wheels. It got its name because the shape and position of this component on old-style vehicles resembled a bird's wing. A fender transport rack is used to carry fenders during transportation. The existing fender transport racks have a limited number of fenders they can load, and during transportation, due to the unstable loading of the fenders, the fenders may fall off the fender transport rack, posing a safety hazard. In view of this, the present utility model is proposed. Content of the Utility Model

[0003] In order to solve the problems of unstable loading of fenders during the transportation by the fender transport rack and the small number of fenders loaded in the fender transport rack in the prior art, the present utility model provides a fender transport rack.

[0004] To solve the above technical problems, the present utility model provides a fender transport rack, which includes a support assembly and a fixing assembly. The support assembly includes a lower base, a support frame, a connecting rod, and a support rod. The fixing assembly includes a fixing block, a limiting clamp, a sliding rod, a lead screw, and a limiting clamp driving member.

[0005] The lower base is disposed above the rollers to support the lifting plate, the guide rod, the lifting rod, the fixing block, and the support frame. The support frame is disposed above the lower base to provide support for the connecting rod, the support rod, the sliding rod, the lead screw, the limiting clamp driving member, the guide rod, the lifting rod, and the lifting driving member. The connecting rod and the support rod are fixed to the support frame to support the fixing block. A plurality of fixing blocks are provided, and the plurality of fixing blocks are respectively disposed on the connecting rod, the support rod, the lifting plate, and the lower base to limit the fender. The limiting clamps are arranged in pairs on the support frame, the sliding rod, and the lead screw. The limiting clamp driving member is fixed to the support frame and is rotatably connected to the lead screw. The limiting clamp driving member drives the lead screw to drive the limiting clamps to clamp the fender.

[0006] In an embodiment of the present utility model, the limiting clamps arranged in pairs include the limiting clamp A and the limiting clamp B. The limiting clamp A is fixed to the support frame to cooperate with the clamping work of the limiting clamp B. The limiting clamp B is disposed on the sliding rod and the lead screw. One end of the lead screw is hinged to the limiting clamp driving member on the support frame, and the other end of the lead screw is hinged to the support frame.

[0007] In an embodiment of the present utility model, the fixing block includes a first-layer fixing block, a second-layer fixing block, a third-layer fixing block, and a fourth-layer fixing block. The first-layer fixing block is fixed to the connecting rod. The second-layer fixing block and the third-layer fixing block are respectively fixed to the upper and lower sides of the support rod. The fourth-layer fixing block is fixed to the lower base and the lifting plate, so as to limit the fender under the action of the first-layer, second-layer, third-layer, and fourth-layer fixing blocks.

[0008] In an embodiment of the present utility model, the fixing block is square-shaped, and a limiting groove for limiting the fender is provided on the fixing block. The first-layer fixing block is fixed to the connecting rod. The second-layer fixing block is fixed above the support rod. The fourth-layer fixing block is fixed to the lifting plate on the right side of the fender transport rack. The limiting grooves on the first-layer fixing block, the second-layer fixing block, and the fourth-layer fixing block face right.

[0009] In an embodiment of the present utility model, the fender transport rack further includes a lifting assembly. The lifting assembly includes a lifting plate, a guide rod, a lifting rod, and a lifting driving member. The lifting plate is arranged on both sides of the lower base to support the fixing block. The two ends of the guide rod are respectively connected to the lower base and the support frame to provide lifting guidance for the lifting plate. The top end of the lifting rod passes through the support frame and is connected to the lifting driving member. The bottom end of the lifting rod passes through the lower base and is rotatably connected to the lower base. The lifting rod passes through the lifting plate and is threadedly connected to the lifting plate. The lifting driving member is fixed to the support frame to drive the lifting plate to lift by driving the lifting rod.

[0010] In an embodiment of the present utility model, the lower base is in a "convex" shape. The lifting plate is arranged on both sides of the "convex"-shaped lower base to install and support the fixing block for lifting.

[0011] In an embodiment of the present utility model, the lifting of the lifting plate is set with a highest position and a lowest position. The highest position of the lifting plate when rising does not exceed the bottom position of the third-layer fixing block. The lowest position of the lifting plate when descending is the position where the lifting plate fits with the lower base.

[0012] In an embodiment of the present utility model, buffer rubbers are arranged inside both the fixing block and the limiting clamp.

[0013] In an embodiment of the present utility model, the fender transport rack further includes a transport assembly. The transport assembly includes rollers, brake pads, and a push rod. The rollers are arranged on the lower base. The brake pads are arranged on the rollers. The push rod is arranged on the support frame.

[0014] In an embodiment of the present utility model, the roller includes two universal wheels and two directional wheels. The two universal wheels are arranged at the rear end of the fender transport rack, and the two directional wheels are arranged at the front end of the fender transport rack.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: By loading the fender on the fixed block of the fender transport rack and using a limit clip to clamp the fender, the stability of fender loading is improved. The fender is shaped like a bird's wing and is L-shaped. The placement methods of the fenders on both sides of the fender transport rack are different, and the placement methods of the fenders on both sides reasonably utilize the curved space of the fender, greatly increasing the number of fenders that the fender transport rack can load. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the embodiments of the present utility model, and constitute a part of the specification. They are used together with the following specific embodiments to explain the embodiments of the present utility model, but do not constitute a limitation to the embodiments of the present utility model. In the drawings:

[0017] Figure 1 is the first three-dimensional structural schematic diagram of the fender transport rack provided by the embodiment of the present utility model;

[0018] Figure 2 is the second three-dimensional structural schematic diagram of the fender transport rack provided by the embodiment of the present utility model;

[0019] Figure 3 is the first state schematic diagram of the fender transport rack transporting the fender provided by the embodiment of the present utility model;

[0020] Figure 4 is the second state schematic diagram of the fender transport rack transporting the fender provided by the embodiment of the present utility model;

[0021] Figure 5 is the third three-dimensional structural schematic diagram of the fender transport rack provided by the embodiment of the present utility model;

[0022] Figure 6 is the fourth three-dimensional structural schematic diagram of the fender transport rack provided by the embodiment of the present utility model

[0023] Figure 7 is Figure 6 the enlarged view at position C in

[0024] DESCRIPTION OF THE REFERENCE NUMERALS

[0025] 1. Fender transport rack; 11. Support component; 12. Fixing component; 13. Lifting component; 14. Transport component; 111. Lower base; 112. Support frame; 113. Connecting rod; 114. Support rod; 121. Fixing block; 122. Limit clamp; 123. Sliding rod; 124. Screw rod; 125. Limit clamp driving part; 131. Lifting plate; 132. Guide rod; 133. Lifting rod; 134. Lifting driving part; 141. Roller; 142. Foot brake piece; 143. Push rod. Detailed implementation manners

[0026] The following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustration and explanation of the present utility model, and are not used to limit the present utility model. As Figures 1-7 As shown in the figure, a fender transport rack 1 of the present utility model includes a support component 11, a fixing component 12, a lifting component 13 and a transport component 14. The support component 11 includes a lower base 111, a support frame 112, a connecting rod 113 and a support rod 114; the fixing component 12 includes a fixing block 121, a limit clamp 122, a sliding rod 123, a screw rod 124 and a limit clamp driving part 125; the lifting component 13 includes a lifting plate 131, a guide rod 132, a lifting rod 133 and a lifting driving part 134; the transport component 14 includes a roller 141, a foot brake piece 142 and a push rod 143.

[0027] The lower base 111 is in a "convex" shape and is arranged above the roller 141 to support the lifting plate 131, the guide rod 132, the lifting rod 133, the fixing block 121 and the support frame 112, so that after the fender is placed on the fixing block 121, the fixing block 121 can perform operations such as fixing, lifting and clamping on the fender; the support frame 112 is arranged above the lower base 111 to provide support for the connecting rod 113, the support rod 114, the sliding rod 123, the screw rod 124, the limit clamp driving part 125, the guide rod 132, the lifting rod 133 and the lifting driving part 134, so that the lifting driving part 134 drives the lifting rod 133 to rotate and drives the lifting plate 131 to lift along the guide rod 132 to adjust the height of the fixing block 121 and adapt to fenders of different sizes, so that the limit clamp driving part 125 drives the screw rod 124 to rotate to clamp the fender; the connecting rod 113 and the support rod 114 are fixed to the support frame 112 to support the fixing block 121, so that the fixing block 121 can limit the fender.

[0028] A plurality of fixing blocks 121 are provided, and the plurality of fixing blocks 121 are respectively arranged on the connecting rod 113, the support rod 114, the lifting plate 131 and the lower base 111 to limit the fender, so that the fender does not shake and fall off during loading and transportation, ensuring the stability of fender loading.

[0029] The limit clamp 122 includes a limit clamp A and a limit clamp B. As Figure 7 shown, the limit clamp A is fixed to the support frame 112 to cooperate with the clamping work of the limit clamp B. The limit clamp B is arranged on the sliding rod 123 and the lead screw 124. The sliding rod 123 is fixed to the support frame 112. One end of the lead screw 124 is hinged to the limit clamp driving member 125 on the support frame 112, and the other end of the lead screw 124 is hinged to the support frame 112. The limit clamp driving member 125 is fixed to the support frame 112 to drive the lead screw 124 to rotate. Specifically, taking Figure 5 the direction shown as a reference, the limit clamp driving member 125 drives the lead screw 124 to rotate counterclockwise along the X-axis direction, so that the limit clamp B moves from the initial position towards the limit clamp A to complete the clamping of the fender by the limit clamp 122. The limit clamp driving member 125 drives the lead screw 124 to rotate clockwise along the X-axis direction, so that the limit clamp B returns to the initial position to unload the fender from the fender transport rack 1.

[0030] In the above embodiment, the initial position of the limit clamp 122 is that there is a gap between the limit clamp A and the limit clamp B, and the size of the gap is adapted to the size of the limit groove on the fixed block 121. After the fender is fully loaded on the fixed block 121, the limit clamp driving member 125 drives the lead screw 124 to rotate counterclockwise along the X-axis direction, so that the limit clamp B moves on the lead screw 124 and the sliding rod 123 towards the limit clamp A until the limit clamp B and the limit clamp A complete the clamping of the fender.

[0031] As Figures 3-4 shown, the lifting plate 131 is arranged on the left and right sides of the "convex"-shaped lower base 111 to support the fixed block 121. The two ends of the guide rod 132 are respectively connected to the lower base 111 and the support frame 112 to provide lifting guidance for the lifting plate 131. The top end of the lifting rod 133 passes through the support frame 112 and is connected to the lifting driving member 134. The bottom end of the lifting rod 133 passes through the lower base 111 and is rotatably connected to the lower base 111. The lifting rod 133 passes through the lifting plate 131 and is threadedly connected to the lifting plate 131. The lifting driving member 134 is fixed to the support frame 112 to drive the lifting plate 131 to lift by driving the lifting rod 133. Specifically, the lifting rod 133 is a lead screw. When the lifting driving member 134 drives the lifting rod 133 to rotate counterclockwise along the Y-axis direction, the lifting rod 133 drives the lifting plate 131 to rise through the guide rod 132. At this time, the lifting plate 131 supports the fender to move upward to a position where the limit clamp 122 can clamp the fender. When the lifting driving member 134 drives the lifting rod 133 to rotate clockwise along the Y-axis direction, the lifting rod 133 drives the lifting plate 131 to descend through the guide rod 132. At this time, the lifting plate 131 moves downward to a position where the limit clamp 122 can clamp the fender, so that the lifting of the lifting plate 131 can adapt to fenders of different sizes.

[0032] In the above embodiments, the lifting of the lifting plate 131 is set with a highest position and a lowest position. The lifting plate 131 rises to the set highest position so that the limit clamp 122 can clamp the fender with a smaller size. It is set that the highest position to which the lifting plate 131 rises does not exceed the bottom position of the third-layer fixing block. The lowest position to which the lifting plate 131 descends is the position where the lifting plate 131 fits with the lower base 111 so that the limit clamp 122 can clamp the fender with a larger size. Within the lifting range of the lifting plate 131, the fender transporter can load fenders of different sizes.

[0033] As Figure 3 shown, the fender is shaped like a bird's wing and is in an "L" shape. The fender transport rack 1 loads fenders on both the left and right sides. The placement methods of the fenders on both sides of the fender transport rack 1 are different. The fenders on one side are placed in the correct orientation so that the fenders are in an "L" shape, and the fenders on the other side are placed in the reverse orientation so that the fenders are in a "7" shape. The lower right part of the "L" - shaped fender and the upper left part of the "7" - shaped fender are complementary in space. The placement methods of the fenders on both sides make reasonable use of the curved space of the fenders, making the structure of the fender transport rack 1 narrower.

[0034] In the above embodiments, the side of the fender transport rack 1 that loads the "L" - shaped fender is the left side, and the side that loads the "7" - shaped fender is the right side. The method of loading fenders on both sides of the fender transport rack 1 improves the space utilization rate of the fender transport rack 1, enabling the fender transport rack 1 to load more fenders.

[0035] The rollers 141 are hinged to the lower base 111 and provide support for the fender transport rack 1 for the fender transport rack 1 to slide; the foot brake pads 142 are arranged on the rollers 141 to stop the rollers 141 from moving; the push rod is arranged on the support frame 112 to facilitate the operator to push the fender transport rack 1 to move.

[0036] In the above embodiments, as Figure 5 shown, the side of the fender transport rack 1 where the push rod is fixed is set as the rear end of the fender transport rack 1, and the side away from the rear end of the fender transport rack 1 is the front end. Four rollers 141 are hinged at the four corners below the lower base 111 for the fender transport rack 1 to move. The rollers 141 include universal wheels and directional wheels. The two rollers 141 at the rear end of the fender transport rack 1 are two universal wheels, and the universal wheels can rotate horizontally to adjust the movement direction of the fender transport rack 1. The two rollers 141 at the front end of the fender transport rack 1 are two directional wheels, and the directional wheels cannot rotate horizontally and can only rotate vertically to support the front - and - back movement of the fender transport rack 1; the brake pads are arranged on the two universal wheels.

[0037] In the above embodiments, the fixing block 121 is square-shaped. A limiting groove for limiting the fender is formed in the fixing block 121, and the direction of the limiting groove is the same as the left-right direction of the fender transport rack 1, which facilitates the fender to be placed into the limiting groove from both sides of the transport rack. The fixing block 121 includes a first-layer fixing block, a second-layer fixing block, a third-layer fixing block, and a fourth-layer fixing block. The first-layer fixing block is fixed to the connecting rod 113, the second-layer fixing block and the third-layer fixing block are respectively fixed to the upper and lower sides of the support rod 114, and the fourth-layer fixing block is fixed to the lower base 111 and the lifting plate 131, so as to limit the fender under the action of the first-layer fixing block, the second-layer fixing block, the third-layer fixing block, and the fourth-layer fixing block.

[0038] Specifically, with Figure 3 the direction shown as a reference, when fixing the "7"-shaped fender, the upper left part of the "7"-shaped fender is fixed to the first-layer fixing block, the lower left part of the "7"-shaped fender is fixed to the second-layer fixing block, and the lower right part of the "7"-shaped fender is fixed to the fourth-layer fixing block on the right lifting plate;

[0039] Similarly, when fixing the "L"-shaped fender, the upper right part of the "L"-shaped fender is fixed to the third-layer fixing block, the lower right part of the "L"-shaped fender is fixed to the fourth-layer fixing block on the lower base, and the lower left part of the "L"-shaped fender is fixed to the fourth-layer fixing block on the left lifting plate.

[0040] In the above embodiments, buffer rubbers are provided in both the fixing block 121 and the limiting clip 122 to prevent the limiting clip 122 and the fixing block 121 from damaging the fender during the clamping process.

[0041] In the above embodiments, the specific loading process is that the methods of loading fenders on both sides of the fender transport rack 1 are different, such as Figure 3As shown in the figure, the loading process on the right side of the fender transport rack 1 is as follows: The staff translates the fender in a "7" shape and pushes it into the fixed block 121 on the right side of the fender transport rack 1. The lifting drive member 134 drives the lifting rod 133 to rotate counterclockwise along the Y-axis. Then, the lifting rod 133 drives the lifting plate 131 to move upward through the guide rod 132. At this time, the lifting plate 131 supports the fender to move upward to reach the position where the limit clamp 122 can clamp the fender. When the right-side fender transport rack 1 has completely loaded the fender, at this time, the limit clamp drive member 125 drives the lead screw 124 to rotate counterclockwise along the X-axis, so that the limit clamp B moves from the initial position to the limit clamp A to complete the clamping of the fender by the limit clamp 122, that is, the fender loading work on the right side of the fender is completed; The loading process on the left side of the fender transport rack 1 is as follows: The staff translates the fender in an "L" shape and pushes it into the fixed block 121 on the left side of the fender transport rack 1. The lifting drive member 134 drives the lifting rod 133 to rotate counterclockwise along the Y-axis. Then, the lifting rod 133 drives the lifting plate 131 to move upward through the guide rod 132. At this time, the lifting plate 131 supports the fender to move upward to reach the position where the limit clamp 122 can clamp the fender. When the left-side fender transport rack 1 has completely loaded the fender, at this time, the limit clamp drive member 125 drives the lead screw 124 to rotate counterclockwise along the X-axis, so that the limit clamp B moves from the initial position to the limit clamp A to complete the clamping of the fender by the limit clamp 122, that is, the fender loading work on the left side of the fender is completed.

[0042] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0043] The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Within the technical concept scope of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods. But these simple modifications and combinations should also be regarded as the content disclosed by the present utility model and all fall within the protection scope of the present utility model.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A fender transport rack, characterized in that, The fender transport rack (1) includes a support assembly (11) and a fixing assembly (12). The support assembly (11) includes a lower base (111), a support frame (112), a connecting rod (113), and a support rod (114). The fixing assembly (12) includes a fixing block (121), a limit clamp (122), a sliding rod (123), a lead screw (124), and a limit clamp driving member (125). The lower base (111) is disposed above the roller (141) to support the lifting plate (131), the guide rod (132), the lifting rod (133), the fixing block (121), and the support frame (112). The support frame (112) is disposed above the lower base (111) to provide support for the connecting rod (113), the support rod (114), the sliding rod (123), the lead screw (124), the limit clamp driving member (125), the guide rod (132), the lifting rod (133), and the lifting driving member (134). The connecting rod (113) and the support rod (114) are fixed to the support frame (112) to support the fixing block (121). A plurality of fixing blocks (121) are provided. The plurality of fixing blocks (121) are respectively disposed on the connecting rod (113), the support rod (114), the lifting plate (131), and the lower base (111) to limit the fender. The limit clamps (122) are arranged in pairs on the support frame (112), the sliding rod (123), and the lead screw (124). The limit clamp driving member (125) is fixed to the support frame (112) and is rotatably connected to the lead screw (124). The limit clamp driving member (125) drives the lead screw (124) to drive the limit clamps (122) to clamp the fender.

2. The fender transport rack according to claim 1, characterized in that, The limit clamps (122) arranged in pairs include the limit clamp A and the limit clamp B. The limit clamp A is fixed to the support frame (112) to cooperate with the clamping work of the limit clamp B. The limit clamp B is disposed on the sliding rod (123) and the lead screw (124). One end of the lead screw (124) is hinged to the limit clamp driving member (125) on the support frame (112), and the other end of the lead screw (124) is hinged to the support frame (112).

3. The fender transport rack according to claim 1, wherein, The fixing block (121) includes a first-layer fixing block, a second-layer fixing block, a third-layer fixing block, and a fourth-layer fixing block. The first-layer fixing block is fixed to the connecting rod (113). The second-layer fixing block and the third-layer fixing block are respectively fixed to the upper and lower sides of the support rod (114). The fourth-layer fixing block is fixed to the lower base (111) and the lifting plate (131) to limit the fender under the action of the first-layer fixing block, the second-layer fixing block, the third-layer fixing block, and the fourth-layer fixing block.

4. The fender transport rack according to claim 3, characterized in that, The fixing block (121) is square-shaped, and a limiting groove for limiting the fender is formed in the fixing block (121), and the direction of the limiting groove faces the left and right sides of the fender transport rack (1). The first-layer fixing block is fixed on the connecting rod (113), the second-layer fixing block is fixed above the support rod (114), the third-layer fixing block is fixed below the support rod (114), and the fourth-layer fixing block is fixed on the lower base (111) and the lifting plate (131).

5. The fender transport rack according to claim 3, characterized in that, The fender transport rack (1) further includes a lifting assembly (13), and the lifting assembly (13) includes a lifting plate (131), a guide rod (132), a lifting rod (133), and a lifting driving member (134). The lifting plate (131) is arranged on both sides of the lower base (111) to support the fixing block (121). The two ends of the guide rod (132) are respectively connected to the lower base (111) and the support frame (112) to provide lifting guidance for the lifting plate (131). The top end of the lifting rod (133) passes through the support frame (112) and is connected to the lifting driving member (134). The bottom end of the lifting rod (133) passes through the lower base (111) and is rotatably connected to the lower base (111). The lifting rod (133) passes through the lifting plate (131) and is threadedly connected to the lifting plate (131). The lifting driving member (134) is fixed on the support frame (112) to drive the lifting plate (131) to lift by driving the lifting rod (133).

6. The fender transport rack according to claim 5, characterized in that, The lower base (111) is in a "convex" shape, and the lifting plate (131) is arranged on both sides of the "convex"-shaped lower base (111) to install and support the lifting of the fixing block (121).

7. The fender transport rack according to claim 6, characterized in that, The lifting of the lifting plate (131) is set with a highest position and a lowest position. The highest position where the lifting plate (131) rises does not exceed the bottom position of the third-layer fixing block. The lowest position where the lifting plate (131) descends is the position where the lifting plate (131) fits with the lower base (111).

8. The fender transport rack according to claim 1, characterized in that, Buffer rubbers are arranged inside both the fixing block (121) and the limiting clamp (122).

9. The fender transport rack according to claim 1, characterized in that, The fender transport rack (1) further includes a transport assembly (14), and the transport assembly (14) includes rollers (141), foot brake pads (142), and a push rod (143). The rollers (141) are arranged on the lower base (111). The foot brake pads (142) are arranged on the rollers (141). The push rod (143) is arranged on the support frame (112).

10. The fender transport rack according to claim 9, characterized in that, The rollers (141) include two universal wheels and two directional wheels. The two universal wheels are arranged at the rear end of the fender transport rack (1), and the two directional wheels are arranged at the front end of the fender transport rack (1).

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