Wheel limiting groove of primary-secondary transport trailer

Abstract

The utility model discloses a wheel limiting groove of a primary-secondary transport trailer, which relates to the technical field of trailers and comprises a groove body and a cover plate, the groove body extends front and back, an opening is formed in the top of the groove body, and the cover plate is buckled above the groove body and seals the opening. The rear side wall of the groove body is an inclined wall which is inclined downwards from back to front and is communicated with an opening of the groove body and a groove bottom plate of the groove body, and the rear side wall and the groove bottom plate are checkered plates. The rear side wall is arranged to be of an inclined wall structure, it is guaranteed that the wheels of the sub-trailer can slowly enter the wheel limiting grooves along the rear side wall, and meanwhile the rear side wall and the groove bottom plate are checkered plates. The wheels of the sub-trailer can be guaranteed to be subjected to certain rolling-out resistance, and the wheels are prevented from being separated from the wheel limiting grooves at will; meanwhile, when the sub-trailer needs to run out of the wheel limiting grooves, the sub-trailer can slowly move upwards along the rear side wall, the road holding force between the wheels of the sub-trailer and the rear side wall is increased, and the sub-trailer can smoothly run out of the wheel limiting grooves.

Description

Technical Field

[0001] The utility model relates to the technical field of trailers, in particular to a wheel limiting groove of a mother-and-child transport trailer. Background Art

[0002] A mother-and-child transport trailer is a special trailer that runs by carrying a child trailer on the back of a mother trailer to reduce the transportation cost when returning empty and reduce the driver's driving fatigue. During the transportation process of the mother-and-child transport trailer, it is necessary to limit the position of the child trailer on the mother trailer, otherwise the child trailer is likely to shift on the mother trailer, which will cause the child trailer to fall and pose a safety hazard. The existing limiting method is to set a wheel limiting groove at the bottom of the mother trailer's compartment, and by inserting the front wheel of the child trailer into the wheel limiting groove, it is prevented from shifting on the mother trailer. For example, Chinese patent CN212473243U discloses a mother-and-child transport trailer.

[0003] However, the wheel limit groove in the prior art is an arc groove structure, and the groove bottom plate is a smooth plate. When the trailer is driven out of the wheel limit groove, the friction between the front wheel of the trailer and the wheel limit groove is small, and slipping is likely to occur, resulting in difficulty in driving out. Utility Model Content

[0004] The utility model aims to provide a wheel limiting groove of a sub-trailer transport trailer, which increases the friction between the front wheel of the sub-trailer and the wheel limiting groove and facilitates the wheels of the sub-trailer to open out of the wheel limiting groove.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a wheel limiting groove of a mother-and-child transport trailer, comprising a groove body extending front and rear and having an opening at the top, and a cover plate snapped on the top of the groove body and closing the opening; the rear side wall of the groove body is an inclined wall inclined from the rear to the front and downwardly connecting the groove body opening and the groove bottom plate of the groove body, and the rear side wall and the groove bottom plate are patterned plates.

[0006] After adopting the above structure, by setting the rear side wall as an inclined wall structure, it is ensured that the wheels of the trailer can slowly enter the wheel limiting groove along the rear side wall, and at the same time the rear side wall and the groove bottom plate are patterned plates; it can ensure that the wheels of the trailer are subjected to a certain rolling resistance to prevent them from arbitrarily escaping from the wheel limiting groove; at the same time, when the trailer needs to drive out of the wheel limiting groove, the trailer can slowly move up along the rear side wall, which increases the grip of the wheels of the trailer and the rear side wall, so that it can smoothly drive out of the wheel limiting groove.

[0007] In order to adapt to different sub-trailers and avoid changing the chassis tooling of the mother trailer back and forth, which wastes costs, a limit baffle is fixedly installed in the tank body, which divides the tank body cavity into an adjustment cavity and a limit cavity set in the front and rear.

[0008] To increase the strength of the limit baffle and prevent it from deforming, the limit baffle includes a baffle body with its left and right ends respectively fixed on the left and right side walls of the trough body. A front support plate extending towards the front side wall of the trough body and fixed on the front side wall is provided at the front end of the baffle body. A rear support plate parallel to the trough bottom plate and fixed on the trough bottom plate is provided at the bottom of the rear end of the baffle body.

[0009] To increase the anti-deformation ability of the limit baffle, an angle of 105 - 115° is provided between the baffle body and the trough bottom plate.

[0010] To make the trough bottom plate stronger and at the same time play a certain role in buffering and decelerating the wheels of the semi-trailer, multiple reinforcing ribs are welded at intervals on the upper surface of the trough bottom plate. The reinforcing ribs extend left and right and span across the entire trough bottom plate in the left - right direction.

[0011] To increase the connection integrity between the trough bottom plate and the left or right side wall and enhance the strength of the trough bottom plate, through holes are provided on at least one side of the left and right side walls of the trough body corresponding to the reinforcing ribs. The reinforcing ribs pass through the through holes, and the protruding end bends towards one side and is fixed on the corresponding left or right side wall.

[0012] To facilitate electroplating liquid leakage and at the same time play a role in releasing stress, liquid leakage holes are provided on the left or right side wall fixed to the trough bottom plate. A plug plate is fixed on the side of the liquid leakage hole located outside the trough body, and the plug plate closes the liquid leakage hole.

[0013] To facilitate the opening and closing of the cover plate, either the left or right side of the cover plate is hinged to the opening side or the bottom of the carriage.

[0014] To further facilitate the opening and closing of the cover plate, a pull ring is provided at the top of the cover plate.

[0015] To prevent the cover plate from deforming when transporting goods, a reinforcing angle steel extending front and back is provided at the bottom of the cover plate, and the reinforcing angle steel does not interfere with the limit baffle.

[0016] After adopting the above technical solutions, the beneficial effects of the present utility model are:

[0017] The wheel limit trough of a mother - child transport trailer of the present utility model solves the technical problem in the prior art that when the wheels of the semi - trailer drive out of the wheel limit trough, it is difficult to drive out due to slipping. The present utility model increases the friction between the front wheels of the semi - trailer and the wheel limit trough, facilitating the wheels of the semi - trailer to drive out of the wheel limit trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the wheel limit trough of a mother - child transport trailer of the present utility model;

[0019] Figure 2 isFigure 1 Schematic diagram of the internal structure;

[0020] Figure 3 is Figure 1 a sectional view.

[0021] In the figure, 1 is the trough body, 11 is the rear side wall, 12 is the trough bottom plate, 121 is the reinforcing rib, 13 is the front side wall, 14 is the through hole, 15 is the liquid leakage hole, 2 is the cover plate, 21 is the pull ring, 22 is the reinforcing angle steel, 3 is the limit baffle, 31 is the baffle body, 32 is the front support plate, and 33 is the rear support plate. Specific implementation mode

[0022] The following further elaborates on the present utility model in conjunction with the accompanying drawings.

[0023] All orientations involved in this specification are based on the orientation when the wheel limit trough of a mother - and - son transport trailer of the present utility model is working properly, without restricting its orientation during storage and transportation. It only represents the relative positional relationship and does not represent the absolute positional relationship.

[0024] As Figure 1 and Figure 2 As commonly shown, a wheel limit trough of a mother - and - son transport trailer includes a trough body 1 extending front - to - back and having an open top, and a cover plate 2 buckled above the trough body 1 to close the opening. The rear side wall 11 of the trough body 1 is an inclined wall that slopes downward from back to front and communicates the opening of the trough body 1 and the trough bottom plate 12 of the trough body 1. The rear side wall 11 and the trough bottom plate 12 are checker plates.

[0025] By setting the rear side wall 11 as an inclined wall structure and at the same time the rear side wall 11 and the trough bottom plate 12 are checker plates; it can not only ensure that the wheels of the sub - trailer are subject to a certain rolling - out resistance to prevent them from randomly slipping out of the wheel limit trough; at the same time, when the sub - trailer needs to drive out of the wheel limit trough, the sub - trailer can slowly move upward along the rear side wall 11, increasing the grip between the wheels of the sub - trailer and the rear side wall 11, enabling it to smoothly drive out of the wheel limit trough.

[0026] For the convenience of opening the cover plate 2, either side of the left - right of the cover plate 2 is hinged to the opening side or the bottom of the carriage. Further, a pull ring 21 is provided at the top of the cover plate 2. By pulling the pull ring 21, the cover plate 2 can be opened to facilitate the smooth entry of the sub - trailer.

[0027] As Figure 3 shown, when the cover plate 2 is buckled on the opening of the trough body 1, since the transported goods will exert a certain pressure on the cover plate 2, in order to prevent the cover plate 2 from deforming, a reinforcing angle steel 22 extending front - to - back is provided at the bottom of the cover plate 2, and the reinforcing angle steel 22 will not interfere with the internal structure of the trough body 1.

[0028] For different sub-trailers, the front overhangs are different, and the positions of the wheel limit grooves are fixed to the bottom of the carriage. If the positions of the wheel limit grooves are adjusted to adapt to different sub-trailers, the chassis tooling of the mother trailer needs to be changed back and forth according to different orders, wasting costs.

[0029] In order to increase the adaptability of the wheel limit grooves, the wheel limit grooves are further improved in this embodiment.

[0030] As Figure 2 and Figure 3 As shown jointly in

[0031] A limit baffle 3 is fixedly installed in the groove body 1. The limit baffle 3 divides the inner cavity of the groove body 1 into an adjustment cavity and a limit cavity arranged front and back. The wheels of the sub-trailer enter the limit cavity from the rear side wall 11 and are stuck behind the limit baffle 3, thereby realizing the limit.

[0032] An angle of 105-115° is provided between the baffle body 31 and the groove bottom plate 12. In this embodiment, it is preferably that an angle of 110° is provided between the baffle body 31 and the groove bottom plate 12.

[0033] A plurality of reinforcing ribs 121 are welded at intervals on the upper surface of the groove bottom plate 12 in the front and rear directions. The reinforcing ribs 121 extend left and right and span the entire groove bottom plate 12 in the left and right directions.

[0034] In order to improve the strengthening effect of the reinforcing ribs 121, through holes 14 are provided on at least one side of the left and right side walls of the groove body 1 corresponding to the reinforcing ribs 121. The reinforcing ribs 121 pass through the through holes 14, and the protruding end is bent to one side and fixed to the corresponding left side wall or right side wall. That is, the reinforcing ribs 121 are in a "7" - shaped structure. By providing the reinforcing ribs 121, the connection integrity between the groove bottom plate 12 and the left side wall or the right side wall is increased, and the strength of the groove bottom plate 12 is increased.

[0035] By setting the reinforcing rib 121, while making the strength of the groove bottom plate 12 higher, it also plays a certain role in buffering and decelerating the wheels of the sub-trailer. When the wheels of the sub-trailer enter the limiting cavity from the rear side wall 11, the reinforcing rib 121 protruding from the groove bottom plate 12 can decelerate the wheels of the sub-trailer, avoiding a large impact on the limiting baffle 3. At the same time, it also increases a certain amount of friction. When it is necessary to drive the wheels of the trailer out, it increases the grip of the wheels and avoids slipping.

[0036] Liquid leakage holes 15 are provided on the left side wall or the right side wall fixed to the groove bottom plate 12. A plug plate is fixed on one side of the liquid leakage holes 15 located outside the tank body 1, and the plug plate closes the liquid leakage holes 15. The setting of the liquid leakage holes 15 not only facilitates electroplating liquid leakage, but also plays a role in releasing stress. When the mother vehicle carries the sub-vehicle, all stresses will concentrate on the weld. After a long time, the weld will crack and affect the quality. By setting the liquid leakage holes 15, the stress can be dispersed around the liquid leakage holes 15, avoiding deformation of the device under the action of stress. In order to prevent dust from entering or wind resistance caused by wind entering during driving, during the assembly process, a plug plate is welded to the outside of the liquid leakage holes 15 to block the liquid leakage holes 15.

[0037] The wheel limiting groove of a mother-child transport trailer of the present utility model solves the technical problem in the prior art that when the wheels of the sub-trailer are driven out of the wheel limiting groove, it is difficult to drive out due to slipping. The present utility model increases the friction between the front wheels of the sub-trailer and the wheel limiting groove, facilitating the wheels of the sub-trailer to drive out of the wheel limiting groove.

[0038] Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A wheel limit groove of a mother-child transport trailer, characterized in that: It comprises a trough body extending front and back and having an opening at the top, and a cover plate buckled on the top of the trough body and closing the opening; The rear side wall of the trough body is an inclined wall that slopes downward from the rear to the front and connects the trough body opening and the trough bottom plate of the trough body. The rear side wall and the trough bottom plate are patterned plates.

2. The wheel limiting groove of the mother-child transport trailer according to claim 1 is characterized in that: A limit baffle is fixedly installed in the slot body, and the limit baffle divides the slot body cavity into an adjustment cavity and a limit cavity arranged in front and back.

3. The wheel limiting groove of the mother-child transport trailer according to claim 2 is characterized in that: The limiting baffle includes a baffle body whose left and right ends are respectively fixed on the left and right side walls of the trough body, the front end of the baffle body is provided with a front support plate extending toward the front side wall of the trough body and fixed on the front side wall, and the rear end bottom of the baffle body is provided with a rear support plate parallel to the trough bottom plate and fixed on the trough bottom plate.

4. The wheel limiting groove of the mother-child transport trailer according to claim 3 is characterized in that: An included angle of 105-115° is set between the baffle body and the groove bottom plate.

5. The wheel limiting groove of the mother-child transport trailer according to claim 1 is characterized in that: A plurality of reinforcing ribs are welded at intervals on the upper surface of the trough bottom plate. The reinforcing ribs extend left and right and span the entire trough bottom plate in the left and right directions.

6. The wheel limiting groove of the mother-child transport trailer according to claim 5 is characterized in that: At least one of the left and right side walls of the trough body is provided with a through hole corresponding to the reinforcing rib, and the reinforcing rib passes through the through hole, and one end of the through hole is bent to one side and fixed to the corresponding left wall or right wall.

7. The wheel limiting groove of the mother-child transport trailer according to claim 6 is characterized in that: A liquid leakage hole is provided on the left side wall or the right side wall fixed to the bottom plate of the tank. A blocking plate is fixed on one side of the liquid leakage hole located outside the tank body, and the blocking plate closes the liquid leakage hole.

8. The wheel limiting groove of the mother-child transport trailer according to claim 1 is characterized in that: Either left or right side of the cover plate is hinged to one side of the opening or the bottom of the carriage.

9. The wheel limiting groove of the mother-child transport trailer according to claim 8 is characterized in that: A pull ring is arranged on the top of the cover plate.

10. The wheel limiting groove of the mother-child transport trailer according to claim 3 is characterized in that: The bottom of the cover plate is provided with a reinforcing angle steel extending forward and backward, and the reinforcing angle steel does not interfere with the limiting baffle.

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