Low flatbed semitrailer front platform structure

Abstract

The utility model relates to the technical field of semitrailer platform, and disclose a kind of low flatbed semitrailer front platform structure, including semitrailer flatbed carriage, the front end of semitrailer flatbed carriage is provided with front platform adjusting assembly, the bottom side of the front end of semitrailer flatbed carriage is fixed with connecting reinforcing plate, the utility model is provided with front platform adjusting assembly in the end of semitrailer flatbed carriage, wherein the front platform connecting plate in front platform adjusting assembly can be lifted and adjusted in the end of semitrailer flatbed carriage, so that the goods carried on semitrailer flatbed carriage need to be translated forward, the end of front platform connecting plate can be inserted in backfall groove, the top end surface of front platform connecting plate and the top end surface of semitrailer flatbed carriage are on the same horizontal plane, facilitate user to adjust the gravity of goods, expand the pulling and carrying load range of semitrailer flatbed carriage, and ensure that front and rear axle load distribution is more uniform during vehicle driving process, improve the safe driving of truck.

Description

Technical Field

[0001] This utility model relates to the field of semi-trailer platform technology, specifically to a front platform structure for a low-bed semi-trailer. Background Technology

[0002] Low-bed semi-trailers are typically used to transport heavy loads, such as tractors, buses, special-purpose vehicles, rail vehicles, mining machinery, forestry machinery, and agricultural machinery (excavators, loaders, pavers, cranes, etc.). Compared to container semi-trailers, they have a lower center of gravity, better stability and safety, and are therefore better at transporting tall cargo and overcoming overhead obstacles.

[0003] A search revealed that Chinese patent publication number CN 221233877 U discloses a reinforcement structure for the front platform of a low-bed semi-trailer, comprising: a flatbed frame, with a connecting frame fixedly connected to the front end of the flatbed frame. The connecting frame is L-shaped, with its vertical end fixedly connected to the flatbed frame and its horizontal end higher than the flatbed frame. Two reinforcement components are symmetrically arranged on the bottom surface of the connecting frame. Each reinforcement component includes a connecting column, an insert column, a rotating block, and a rotating shell. The connecting column is vertically fixedly connected to the bottom surface of the connecting frame, and a slot is formed on the bottom surface of the connecting column. The rotating block is rotatably disposed inside the rotating shell, and the insert column is fixedly connected to the upper side of the rotating block. The insert column is slidably inserted into the slot, and both the insert column and the slot are polygonal. A locking component is provided between the connecting column and the insert column to lock the position of the insert column inside the connecting column. This utility model allows for quick connection of the vehicle body and the low-bed, improving the stability of the connection.

[0004] The semi-trailer front platform in the aforementioned patent still has certain shortcomings. Since the existing low-bed semi-trailer front platform structure is mostly fixed and difficult to adjust, it restricts the placement of goods. When the size and weight distribution of different heavy goods vary greatly, the fixed front platform is difficult to adjust flexibly according to the center of gravity of the goods, which can easily lead to uneven distribution of load between the front and rear axles during vehicle operation and affect the safe driving of the truck. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a front platform structure for a low-bed semi-trailer. This solves the problem that most existing low-bed semi-trailer front platform structures are fixed and difficult to adjust, which limits the placement of goods. When there are significant differences in the size and weight distribution of different heavy goods, the fixed front platform structure cannot be flexibly adjusted according to the center of gravity of the goods, which can easily lead to uneven distribution of load between the front and rear axles during vehicle operation and affect the safe driving of the truck.

[0006] This utility model provides the following technical solution: a front platform structure for a low-bed semi-trailer, including a semi-trailer flatbed trailer, a front platform adjustment component is provided at the front end of the semi-trailer flatbed trailer, and a connecting reinforcement plate is fixed to the bottom side of the front end of the semi-trailer flatbed trailer.

[0007] The front platform adjustment assembly includes a fixed connecting seat located at the center of the front end of the semi-trailer flatbed. The bottom end of the fixed connecting seat is fixedly connected to the connecting reinforcing plate. A return groove is formed at the top of the fixed connecting seat. Two limiting slots are symmetrically formed on the two side walls of the return groove. A fixing sliding groove is formed on the side wall of each limiting slot. A front platform connecting plate is provided at the top of the return groove. Two connecting inserts are symmetrically formed on both sides of the end of the front platform connecting plate. The connecting inserts are slidably inserted into the limiting slots. A fastening screw is vertically formed on the side of each connecting insert. The fastening screw passes through the fixing sliding groove. A fastening nut is fitted at the end of the fastening screw. A support sliding groove is formed at the center of the bottom end of the front platform connecting plate. A connecting slider is slidably arranged in the support sliding groove. A limiting screw is provided in the support sliding groove. The limiting screw passes through the center of the connecting slider. A fastening sleeve is fitted on the limiting screw. A first connecting frame is provided at the bottom end of the connecting slider. A supporting reinforcing rod is inserted into the first connecting frame.

[0008] Preferred technical solution 1: The end of the support reinforcing rod is rotatably connected to the first connecting frame through a first pin, and a second connecting frame is fixed to the side of the fixed connecting seat.

[0009] Preferred technical solution 2: The bottom end of the support reinforcing rod is inserted into the second connecting frame, and the bottom end of the support reinforcing rod is rotatably connected to the second connecting frame through a second pin.

[0010] Preferred technical solution three: The inner diameter of the return groove is the same as the width of the front platform connecting plate.

[0011] This design allows the front platform connecting plate to be inserted into the drop groove.

[0012] Preferred technical solution four: The diameter of the fastening screw is the same as the inner diameter of the fixed sliding joint.

[0013] This design allows the fastening screw to slide up and down within the fixed sliding joint.

[0014] Preferred technical solution five: The longitudinal cross-sections of the supporting groove and the connecting slider are of a uniform trapezoidal shape.

[0015] This solution enables the connecting slider to slide more stably in the support groove.

[0016] Compared with the prior art, this utility model provides a front platform structure for a low-flatbed semi-trailer, which has the following beneficial effects:

[0017] (1) This utility model provides a front platform adjustment component at the end of the semi-trailer flatbed, wherein the front platform connecting plate in the front platform adjustment component can be raised and lowered at the end of the semi-trailer flatbed, so that when the goods carried on the semi-trailer flatbed need to be moved forward, the end of the front platform connecting plate can be inserted into the drop groove, and the top surface of the front platform connecting plate is on the same horizontal plane as the top surface of the semi-trailer flatbed, which makes it convenient for users to adjust the center of gravity of the goods, expand the carrying capacity of the semi-trailer flatbed, and ensure that the load distribution of the front and rear axles is more even during the vehicle's operation, thereby improving the safe driving of the truck. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 For the present utility model Figure 1 A schematic diagram of the structure of the front-mid platform adjustment component;

[0020] Figure 3 For the present utility model Figure 1 Schematic diagram of the front-mid platform connecting plate;

[0021] Figure 4 For the present utility model Figure 3 Enlarged view of the central support slide structure.

[0022] In the picture: 1. Semi-trailer flatbed trailer; 2. Front platform adjustment assembly; 3. Connecting reinforcement plate;

[0023] 201. Fixed connecting seat; 202. Return groove; 203. Limiting slot; 204. Fixed sliding joint; 205. Front platform connecting plate; 206. Connecting insert plate; 207. Fastening screw; 208. Fastening nut; 209. Supporting slide; 210. Connecting slider; 211. Limiting screw; 212. Fastening sleeve; 213. First connecting frame; 214. Support reinforcing rod; 215. First pin; 216. Second connecting frame; 217. Second pin. Detailed Implementation

[0024] Please see Figure 1-4 ,

[0025] Example 1: A front platform structure for a low-bed semi-trailer includes a semi-trailer flatbed trailer 1, a front platform adjustment component 2 is provided at the front end of the semi-trailer flatbed trailer 1, and a connecting reinforcement plate 3 is fixed to the bottom side of the front end of the semi-trailer flatbed trailer 1.

[0026] The front platform adjustment assembly 2 includes a fixed connecting seat 201 located at the middle of the front end of the semi-trailer flatbed 1. The bottom end of the fixed connecting seat 201 is fixedly connected to the connecting reinforcing plate 3. A return groove 202 is provided at the top of the fixed connecting seat 201. Two limiting slots 203 are symmetrically provided on the two side walls of the return groove 202. A fixing sliding groove 204 is provided on the side wall of each limiting slot 203. A front platform connecting plate 205 is provided at the top of the return groove 202. Two connecting inserts 206 are symmetrically provided on both sides of the end of the front platform connecting plate 205. The connecting inserts 206 are slidably inserted into the limiting slots 203. A fastening screw 207 is vertically provided on the side of the connecting insert 206. The fastening screw 207 passes through the fixing sliding groove 204. A fastening nut 208 is sleeved on the end of the fastening screw 207. A support sliding groove 209 is provided in the middle of the bottom end of the front platform connecting plate 205.

[0027] A connecting slider 210 is slidably disposed within a support groove 209. A limiting screw 211 is disposed within the support groove 209, passing through the middle of the connecting slider 210. A fastening sleeve 212 is fitted onto the limiting screw 211. A first connecting frame 213 is disposed at the bottom end of the connecting slider 210. A supporting reinforcing rod 214 is inserted into the first connecting frame 213. The end of the supporting reinforcing rod 214 is rotatably connected to the first connecting frame 213 via a first pin 215. A second connecting frame 216 is fixed to the side of the fixed connecting seat 201. The bottom end of the supporting reinforcing rod 214 is inserted into the second connecting frame 216, and the bottom end of the supporting reinforcing rod 214 is rotatably connected to the second connecting frame 216 via a second pin 217.

[0028] Example 2: The difference between this example and Example 1 is that the inner diameter of the return groove 202 is the same as the width of the front platform connecting plate 205.

[0029] This allows the front platform connecting plate 205 to be inserted into the return groove 202.

[0030] Example 3: The difference between this example and Example 1 is that the diameter of the fastening screw 207 is the same as the inner diameter of the fixed sliding joint 204.

[0031] This allows the fastening screw 207 to slide up and down within the fixed sliding joint 204.

[0032] Example 4: The difference between this example and Example 1 is that the longitudinal sections of the support groove 209 and the connecting slider 210 are in the shape of a uniform trapezoid.

[0033] This makes the sliding of the connecting slider 210 in the support groove 209 more stable.

[0034] In this embodiment, since the existing low-flatbed semi-trailer front platform structure is mostly fixed and difficult to adjust, it restricts the placement of goods. When the size and weight distribution of different heavy goods vary greatly, the fixed front platform structure is difficult to adjust flexibly according to the center of gravity of the goods, which can easily lead to uneven distribution of front and rear axle loads during vehicle operation and affect the safe driving of the truck.

[0035] In summary, in specific implementation, when the semi-trailer flatbed trailer 1 is carrying long cargo, the user can rotate the fastening nut 208 in the front platform adjustment component 2 so that the fastening nut 208 no longer resists and limits the fastening screw 207, and the fastening screw 207 can slide in the fixed sliding joint 204, while the connecting plates 206 on both sides of the front platform connecting plate 205 can descend in the limiting slot 203.

[0036] This allows the front platform connecting plate 205 to be lowered and inserted into the return groove 202. The top surface of the front platform connecting plate 205 is on the same horizontal plane as the semi-trailer flatbed 1, thereby allowing the goods carried on the semi-trailer flatbed 1 to move towards the front of the semi-trailer flatbed 1, so that the center of gravity of the goods is as close as possible to the middle of the semi-trailer flatbed 1, thus ensuring that the goods are more stable during transportation.

[0037] This allows for more flexible adjustment of the cargo's center of gravity, ensuring a more even distribution of load between the front and rear axles during vehicle operation, improving the truck's safe driving, and also expanding the cargo carrying capacity of the semi-trailer flatbed trailer.

Claims

1. A front platform structure for a low-bed semi-trailer, comprising a semi-trailer flatbed trailer (1), characterized in that: The front end of the semi-trailer flatbed trailer (1) is provided with a front platform adjustment component (2), and a connecting reinforcement plate (3) is fixed to the bottom side of the front end of the semi-trailer flatbed trailer (1). The front platform adjustment assembly (2) includes a fixed connecting seat (201) disposed at the middle of the front end of the semi-trailer flatbed (1). The bottom end of the fixed connecting seat (201) is fixedly connected to the connecting reinforcing plate (3). A return groove (202) is provided at the top of the fixed connecting seat (201). Two limiting slots (203) are symmetrically provided on the two side walls of the return groove (202). A fixed sliding groove (204) is provided on the side wall of each limiting slot (203). A front platform connecting plate (205) is provided at the top of the return groove (202). Two connecting inserts (206) are symmetrically provided on both sides of the end of the front platform connecting plate (205). The connecting inserts (206) are slidably inserted into the limiting slots (203). A fastening screw (207) is vertically arranged on the side of the 206), the fastening screw (207) passes through the fixed sliding joint (204), and a fastening nut (208) is sleeved on the end of the fastening screw (207). A support sliding groove (209) is opened in the middle of the bottom end of the front platform connecting plate (205). A connecting slider (210) is slidably arranged in the support sliding groove (209). A limiting screw (211) is arranged in the support sliding groove (209). The limiting screw (211) passes through the middle of the connecting slider (210). A fastening nut (212) is sleeved on the limiting screw (211). A first connecting frame (213) is arranged at the bottom end of the connecting slider (210). A supporting reinforcing rod (214) is inserted in the first connecting frame (213).

2. The low-bed semi-trailer front platform structure according to claim 1, characterized in that: The end of the support reinforcing rod (214) is rotatably connected to the first connecting frame (213) by a first pin (215), and the side of the fixed connecting seat (201) is fixed with a second connecting frame (216).

3. The low-bed semi-trailer front platform structure according to claim 2, characterized in that: The bottom end of the support reinforcing rod (214) is inserted into the second connecting frame (216), and the bottom end of the support reinforcing rod (214) is rotatably connected to the second connecting frame (216) by a second pin (217).

4. The low-bed semi-trailer front platform structure according to claim 3, characterized in that: The inner diameter of the drop groove (202) is the same as the width of the front platform connecting plate (205).

5. The low-bed semi-trailer front platform structure according to claim 4, characterized in that: The diameter of the fastening screw (207) is the same as the inner diameter of the fixed sliding joint (204).

6. The low-bed semi-trailer front platform structure according to claim 5, characterized in that: The longitudinal sections of the supporting groove (209) and the connecting slider (210) are trapezoidal in shape.

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