A stockyard flatbed trailer support structure

Abstract

The utility model relates to a kind of stockyard flat trailer support structure, belong to flat trailer support technical field, including support shaft and support seat, the support shaft is arranged on support seat, the support shaft is rotatably connected with support seat by first bearing and second bearing, the first bearing is rolling bearing, the second bearing is thrust bearing, the inner ring of first bearing and second bearing is all set in support shaft, the outer ring of first bearing and second bearing is all fixedly connected with support seat.The utility model is by simultaneously using rolling bearing and thrust bearing, realize the axial force and radial force of vehicle are simultaneously borne, improve the carrying capacity of connecting rod seat, guarantee the safe, efficient and stable operation of freight yard.

Description

Technical Field

[0001] This utility model relates to a support structure for a flatbed trailer in a material yard, and belongs to the field of flatbed trailer support technology. Background Technology

[0002] When transferring goods in the material yard, a tractor (powered vehicle) and several flatbed trucks (unpowered) are used. Depending on the weight of the load, the tractor will carry a different number of flatbed trucks. Whether it is between the tractor and the flatbed truck, or between the flatbed trucks, the trailer linkage is used. It is the guarantee for the safe, stable and efficient operation of the vehicle.

[0003] like Figure 3 As shown, in the existing technology, the support shaft is welded to the bottom of the flatbed truck, and the support seat is fixed to the connecting rod seat. There is only one rolling bearing of model 6211 between them (6211 rolling bearing is a deep groove ball bearing; 6 indicates the bearing type series, 2 indicates that the bearing is a single-row design, i.e., a standard single-row deep groove ball bearing, and 11 indicates an inner diameter of 55mm). This bearing must withstand both the traction force (radial force) between the vehicles and the axial force caused by the height difference between the vehicles. This rolling bearing is unable to withstand the load and often fails without warning. When the bearing fails during operation, it will cause damage to the connecting rod seat, resulting in a loss of connection between the vehicles. The consequence is rear-end collisions on flat ground and vehicle rollover on slopes, causing serious accidents and posing a significant safety hazard.

[0004] Therefore, a support structure for flatbed trailers in material yards is needed to improve the load-bearing capacity of the linkage seats and ensure the safe, efficient and stable operation of freight material yards. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, to provide a support structure for flatbed trailers in a material yard that improves the load-bearing capacity of the connecting rod seat and ensures the safe, efficient and stable operation of the material yard.

[0006] The technical solution adopted by this utility model to solve the above problems is as follows: a support structure for a material yard flatbed trailer, including a support shaft and a support base. The support shaft passes through the support base and is rotatably connected to the support base through a first bearing and a second bearing. The first bearing is a rolling bearing and the second bearing is a thrust bearing. The inner rings of the first bearing and the second bearing are both sleeved on the support shaft, and the outer rings of the first bearing and the second bearing are both fixedly connected to the support base.

[0007] Preferably, the rolling bearing is model 6216 and the thrust bearing is model 51122.

[0008] Preferably, the support includes a base and a fixing plate. The base has a through channel, the fixing plate is fixedly mounted on one side of the base, and the fixing plate has a through hole that is directly opposite the through channel.

[0009] Preferably, the passageway includes a first cavity, a second cavity, and a third cavity, with the first cavity and the third cavity located on opposite sides of the second cavity, and the third cavity arranged toward the fixing plate.

[0010] Preferably, the first cavity, the second cavity, and the third cavity are all cylindrical, and the first cavity, the second cavity, and the third cavity are arranged coaxially, with the diameter of the first cavity being larger than the diameter of the third cavity.

[0011] Preferably, the diameter of the first cavity is 145mm, the diameter of the third cavity is 140mm, the diameter of the second cavity is 124mm, and the diameter of the through hole is 120mm.

[0012] Preferably, the support shaft includes a first shaft segment, a second shaft segment, a third shaft segment, and a fourth shaft segment distributed sequentially along its axial direction. The diameters of the first shaft segment, the second shaft segment, the third shaft segment, and the fourth shaft segment decrease sequentially. The first shaft segment is located on the side of the seat away from the fixed plate. The second shaft segment passes through the first cavity and the second cavity sequentially. The third shaft segment is located in the third cavity. The fourth shaft segment passes through a through hole. The first bearing is located in the third cavity and is installed at the third shaft segment. The second bearing is located in the first cavity and is installed at the second shaft segment.

[0013] Preferably, the support base is provided with heat dissipation holes, which are located between the first cavity and the third cavity.

[0014] Preferably, the support base is provided with two sets of fasteners, which correspond one-to-one with the first bearing and the second bearing, respectively. Each group of fasteners has multiple fasteners, and the fasteners in the same group are evenly distributed circumferentially around the support shaft. The fastener includes a clamping plate and a clamping screw. The clamping plate abuts against the clamping screw on the side away from the support shaft. The clamping screw is threadedly connected to the support seat. In one set of fasteners, the top plate of one set of fasteners is fitted to the outer ring of the first bearing, and the top plate of the other set of fasteners is fitted to the outer ring of the second bearing.

[0015] Preferably, the clamping plate is an arc-shaped plate.

[0016] Compared with the prior art, the advantages of this utility model are: This utility model discloses a support structure for a flatbed trailer in a material yard. By simultaneously employing rolling bearings and thrust bearings, it can simultaneously withstand the axial and radial forces of the vehicle, thereby improving the load-bearing capacity of the connecting rod seat and ensuring the safe, efficient, and stable operation of the freight material yard. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the support structure for a flatbed trailer in a material yard according to the present invention. Figure 2 This is a schematic diagram of the support structure; Figure 3 This is a schematic diagram of the existing technology.

[0018] in: Support shaft 1, support base 2, first bearing 3, second bearing 4, top plate 5, top screw 6, heat dissipation hole 7; First shaft segment 11, second shaft segment 12, third shaft segment 13, fourth shaft segment 14; 21 base, 22 fixing plate, 23 through channel, 24 through hole; First cavity 231, second cavity 232, third cavity 233. Detailed Implementation

[0019] like Figures 1 to 2 As shown, a material yard flatbed trailer support structure in this embodiment includes a support shaft 1 and a support base 2. The support shaft 1 passes through the support base 2. The support shaft 1 is rotatably connected to the support base 2 through a first bearing 3 and a second bearing 4. The first bearing 3 is a rolling bearing, model number 6216. The second bearing 4 is a thrust bearing, model number 51122. The inner rings of the first bearing 3 and the second bearing 4 are both sleeved on the support shaft 1. The outer rings of the first bearing 3 and the second bearing 4 are both fixedly connected to the support base 2. During use, the support shaft 1 is welded to the bottom of the flatbed truck, and the support seat 2 is fixed to the connecting rod seat. The first bearing 3 bears the radial force between the vehicles, and the second bearing 4 bears the axial force of the vehicles. This improves the load-bearing capacity of the connecting rod seat and ensures the safe, efficient and stable operation of the freight yard. The support base 2 includes a base body 21 and a fixing plate 22. The base body 21 is provided with a through channel 23. The fixing plate 22 is fixedly disposed on one side of the base body 21. The fixing plate 22 is provided with a through hole 24. The through hole 24 is arranged opposite to the through channel 23. The passage 23 includes a first cavity 231, a second cavity 232 and a third cavity 233. The first cavity 231 and the third cavity 233 are located on both sides of the second cavity 232, and the third cavity 233 is arranged towards the fixing plate 22. The first cavity 231, the second cavity 232, and the third cavity 233 are all cylindrical and are arranged coaxially. The diameter of the first cavity 231 is larger than the diameter of the third cavity 233. Specifically, the diameter of the first cavity 231 is 145 mm, the diameter of the third cavity 233 is 140 mm, the diameter of the second cavity 232 is 124 mm, and the diameter of the through hole 24 is 120 mm. The support shaft 1 includes a first shaft segment 11, a second shaft segment 12, a third shaft segment 13, and a fourth shaft segment 14 distributed sequentially along its axial direction. The diameters of the first shaft segment 11, the second shaft segment 12, the third shaft segment 13, and the fourth shaft segment 14 decrease sequentially. The first shaft segment 11 is located on the side of the seat 21 away from the fixing plate 22. The second shaft segment 12 passes through the first cavity 231 and the second cavity 232 in sequence. The third shaft segment 13 is located in the third cavity 233. The fourth shaft segment 14 passes through the through hole 24. The first bearing 3 is located in the third cavity 233 and is installed at the third shaft segment 13. The second bearing 4 is located in the first cavity 231 and is installed at the second shaft segment 12. The support base 2 is provided with two sets of fasteners, which correspond one-to-one with the first bearing 3 and the second bearing 4, respectively. Each group of fasteners has multiple fasteners, and the fasteners in the same group are evenly distributed circumferentially around the support shaft 1. The specific number of fasteners in each group is three. The fastener includes a top clamping plate 5 and a top clamping screw 6. The top clamping plate 5 is abutted against the top clamping screw 6 on the side away from the support shaft 1. The top clamping screw 6 is threadedly connected to the support base 2. In one set of fasteners, the top plate 5 of one set of fasteners is fitted with the outer ring of the first bearing 3, and the top plate 5 of the other set of fasteners is fitted with the outer ring of the second bearing 4. The top plate 5 is an arc-shaped plate. When it is necessary to fix the outer rings of the first bearing 3 and the second bearing 4 to the support seat 2, tighten the top screw 6 so that the top screw 6 pushes the top plate 5 to move towards the axis of the support shaft 1, thereby clamping the outer rings of the first bearing 3 or the second bearing 4 in the same fastener. Of course, when there is an eccentricity between the first cavity 231 and the second cavity 232 due to processing errors, the first bearing 3 and the second bearing 4 can be moved along the diameter direction of the support shaft 1 by rotating or loosening the tightening screw 6, which facilitates the adjustment of the position of the first bearing 3 and the second bearing 4. The support base 2 is provided with heat dissipation holes 7, which are located between the first cavity 231 and the third cavity 233. During use, the first bearing 3 and the second bearing 4 generate heat. The heat dissipation holes 7 facilitate the heat dissipation of the first bearing 3 and the second bearing 4, and prevent high temperature from affecting the service life of the first bearing 3 and the second bearing 4. In summary, by employing both rolling bearings and thrust bearings, the axial and radial forces of the vehicle can be simultaneously borne, thereby improving the load-bearing capacity of the connecting rod seat and ensuring the safe, efficient, and stable operation of the freight yard.

[0020] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A support structure for a flatbed trailer in a material yard, comprising a support shaft (1) and a support base (2), wherein the support shaft (1) passes through the support base (2), characterized in that: The support shaft (1) is rotatably connected to the support seat (2) through the first bearing (3) and the second bearing (4). The first bearing (3) is a rolling bearing, and the second bearing (4) is a thrust bearing. The inner rings of the first bearing (3) and the second bearing (4) are both sleeved on the support shaft (1), and the outer rings of the first bearing (3) and the second bearing (4) are both fixedly connected to the support seat (2).

2. The material yard flatbed trailer support structure according to claim 1, characterized in that: The rolling bearing is model number 6216, and the thrust bearing is model number 51122.

3. The material yard flatbed trailer support structure according to claim 1, characterized in that: The support base (2) includes a base body (21) and a fixing plate (22). The base body (21) is provided with a through channel (23). The fixing plate (22) is fixedly installed on one side of the base body (21). The fixing plate (22) is provided with a through hole (24). The through hole (24) and the through channel (23) are arranged opposite to each other.

4. The material yard flatbed trailer support structure according to claim 3, characterized in that: The passage (23) includes a first cavity (231), a second cavity (232) and a third cavity (233). The first cavity (231) and the third cavity (233) are located on both sides of the second cavity (232), and the third cavity (233) is arranged towards the fixing plate (22).

5. The material yard flatbed trailer support structure according to claim 4, characterized in that: The first cavity (231), the second cavity (232) and the third cavity (233) are all cylindrical. The first cavity (231), the second cavity (232) and the third cavity (233) are arranged coaxially. The diameter of the first cavity (231) is larger than the diameter of the third cavity (233).

6. The material yard flatbed trailer support structure according to claim 5, characterized in that: The diameter of the first cavity (231) is 145 mm, the diameter of the third cavity (233) is 140 mm, the diameter of the second cavity (232) is 124 mm, and the diameter of the through hole (24) is 120 mm.

7. The material yard flatbed trailer support structure according to claim 5, characterized in that: The support shaft (1) includes a first shaft section (11), a second shaft section (12), a third shaft section (13), and a fourth shaft section (14) distributed sequentially along its axial direction. The diameters of the first shaft section (11), the second shaft section (12), the third shaft section (13), and the fourth shaft section (14) decrease sequentially. The first shaft section (11) is located on the side of the seat (21) away from the fixed plate (22). The second shaft section (12) passes through the first cavity (231) and the second cavity (232) sequentially. The third shaft section (13) is located in the third cavity (233). The fourth shaft section (14) passes through the through hole (24). The first bearing (3) is located in the third cavity (233) and is installed at the third shaft section (13). The second bearing (4) is located in the first cavity (231) and is installed at the second shaft section (12).

8. The material yard flatbed trailer support structure according to claim 4, characterized in that: The support base (2) is provided with heat dissipation holes (7), which are located between the first cavity (231) and the third cavity (233).

9. The material yard flatbed trailer support structure according to claim 1, characterized in that: The support base (2) is provided with two sets of fasteners, which correspond one-to-one with the first bearing (3) and the second bearing (4), respectively. Each group of fasteners is provided with multiple fasteners, and the multiple fasteners in the same group are evenly distributed circumferentially around the support shaft (1) as the center. The fastener includes a top plate (5) and a top screw (6). The top plate (5) is abutted against the top screw (6) on the side away from the support shaft (1). The top screw (6) is threadedly connected to the support base (2). In the two sets of fasteners, the top plate (5) in one set of fasteners is fitted with the outer ring of the first bearing (3), and the top plate (5) in the other set of fasteners is fitted with the outer ring of the second bearing (4).

10. A material yard flatbed trailer support structure according to claim 9, characterized in that: The top clamping plate (5) is an arc-shaped plate.

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