Mining flat car with adjustable axle distance
By installing an adjustable flatbed telescopic mechanism on the mining flatbed car, the problem of unstable transportation caused by the fixed wheelbase of the traditional mining flatbed car has been solved, and stable transportation of longer goods has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-03-13
AI Technical Summary
The fixed wheelbase of traditional mining flatbed trucks causes longer cargo to extend beyond the flatbed during transportation, reducing transportation stability.
An adjustable wheelbase mining flatbed truck was designed. An adjustable flatbed telescopic mechanism was set between the main flatbed and the auxiliary flatbed. The distance between the main drive wheel and the auxiliary drive wheel was adjusted by using a limiting rod and an internal threaded ring to accommodate goods of different lengths.
It enables stable transportation of longer goods, improving stability and adaptability during the transportation process.
Smart Images

Figure CN223990045U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of mining flatbed trucks, and in particular to a mining flatbed truck with an adjustable wheelbase. Background Technology
[0002] Mining flatbed trucks are suitable for underground mining operations, transporting equipment or other goods along underground tunnels and surface industrial sites. They are an indispensable piece of transportation equipment in modern mining operations, featuring modified single-row radial ball bearings, long service life, a simple and reasonable main rib and load-bearing structure, and low cost.
[0003] Traditional mining flatbed trucks have some drawbacks. In actual use, the wheelbase of mining flatbed trucks is fixed, and their structure and size are simple and fixed. When the goods to be transported are long, the fixed wheelbase of the mining flatbed truck will cause the edge of the goods to extend outside the flatbed and be suspended in the air. The flatbed cannot provide good support for the goods, which reduces the stability of the goods transportation process and makes it difficult to transport long goods. Utility Model Content
[0004] The main objective of this invention is to provide a mining flatbed truck with an adjustable wheelbase, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An adjustable-wheelbase mining flatbed truck includes a main drive wheel and a secondary drive wheel. A flatbed telescopic mechanism is provided at the upper end of the main drive wheel. The telescopic mechanism includes a main flatbed platform mounted on the upper end of the main drive wheel. A telescopic plate is slidably connected inside the main flatbed platform. A secondary flatbed platform is fixedly connected to one end of the telescopic plate. A control frame is fixedly connected to the lower end of the main flatbed platform near the main drive wheel. A sliding block is slidably connected to the inner side of the control frame. A telescopic rod is fixedly connected to one end of the sliding block. A mounting block is fixedly connected to one end of the telescopic rod. A limiting hole is provided at the front end of the control frame. A limiting rod is slidably connected inside the sliding block.
[0007] Preferably, the limiting rod is located inside the defining hole, and an internal threaded ring is threaded to the outer side of the limiting rod near the rear side of the defining hole.
[0008] Preferably, a handle is fixedly connected to the front end of the limiting rod, the telescopic rod is located inside the control frame, and the telescopic rod is slidably connected to the control frame.
[0009] Preferably, the upper end of the mounting block is fixedly connected to the lower end of the sub-platform, the number of the limiting holes is multiple, and the internal threaded ring is in contact with the control frame.
[0010] Preferably, the secondary drive wheel is installed at the lower end of the secondary platform near the mounting block, and one end of the secondary drive wheel is fixedly connected to a connector.
[0011] Preferably, a control rod is fixedly connected to the upper end of the connector, and the control rod is T-shaped.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] By pulling the secondary platform, the telescopic plate slides inside the main platform. Then, the limiting rod is inserted into a new set of limiting holes and into the sliding block. Finally, the internal threaded ring is screwed onto the outside of the limiting rod. This allows for easy limitation of the distance between the main platform and the secondary platform, and adjustment of the distance between the main drive wheel and the secondary drive wheel. Longer goods can be placed on the main platform and the secondary platform. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a mining flatbed truck with an adjustable wheelbase according to this utility model. Figure 1 ;
[0015] Figure 2 This is a schematic diagram of the overall structure of a mining flatbed truck with an adjustable wheelbase according to this utility model. Figure 2 ;
[0016] Figure 3 This is a schematic diagram of the flatbed telescopic mechanism of a mining flatbed truck with adjustable wheelbase according to this utility model. Figure 1 ;
[0017] Figure 4 This is a schematic diagram of the flatbed telescopic mechanism of a mining flatbed truck with adjustable wheelbase according to this utility model. Figure 2 ;
[0018] Figure 5 This is a partial structural diagram of the flatbed telescopic mechanism of a mining flatbed truck with adjustable wheelbase according to this utility model.
[0019] In the diagram: 1. Main drive wheel; 2. Flat plate telescopic mechanism; 21. Main flat plate; 22. Telescopic plate; 23. Secondary flat plate; 24. Control frame; 25. Sliding block; 26. Telescopic rod; 27. Mounting block; 28. Limiting hole; 29. Limiting rod; 210. Internal threaded ring; 211. Handle; 3. Secondary drive wheel; 4. Connecting piece; 5. Control rod. Detailed Implementation
[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0021] like Figure 1-5 As shown, a mining flatbed truck with adjustable wheelbase includes a main drive wheel 1 and an auxiliary drive wheel 3. A flatbed telescopic mechanism 2 is provided at the upper end of the main drive wheel 1. The flatbed telescopic mechanism 2 includes a main flatbed platform 21 installed at the upper end of the main drive wheel 1. A telescopic plate 22 is slidably connected inside the main flatbed platform 21. An auxiliary flatbed platform 23 is fixedly connected to one end of the telescopic plate 22. A control frame 24 is fixedly connected to the lower end of the main flatbed platform 21 near the main drive wheel 1. A sliding block 25 is slidably connected to the inner side of the control frame 24. A telescopic rod 26 is fixedly connected to one end of the sliding block 25. A mounting block 27 is fixedly connected to one end of the telescopic rod 26. A limiting hole 28 is opened at the front end of the control frame 24. A limiting rod 29 is slidably connected inside the sliding block 25.
[0022] In this embodiment, the limiting rod 29 is located inside the limiting hole 28, and an internal threaded ring 210 is threadedly connected to the outer side of the limiting rod 29 near the rear side of the limiting hole 28. A handle 211 is fixedly connected to the front end of the limiting rod 29. The telescopic rod 26 is located inside the control frame 24 and is slidably connected to the control frame 24. The upper end of the mounting block 27 is fixedly connected to the lower end of the sub-plate 23. There are multiple sets of limiting holes 28, and the internal threaded ring 210 is in contact with the control frame 24.
[0023] Specifically, first, unscrew the internal threaded ring 210, then hold the handle 211 and pull it to disengage the limiting rod 29 from the inside of the sliding block 25. Then, pull the limiting rod 29 out from the inside of the limiting hole 28, and pull the telescopic plate 22 out from the main plate 21. When the length between the main plate 21 and the auxiliary plate 23 is adjusted to be the same as the length of the transported goods, insert the limiting rod 29 into a new set of limiting holes 28 and into the sliding block 25. Then, screw the internal threaded ring 210 onto the outside of the limiting rod 29, thereby limiting the distance between the main plate 21 and the auxiliary plate 23, thus adjusting the main drive... The distance between the driving wheel 1 and the auxiliary driving wheel 3 allows for the placement of longer goods on the main platform 21 and the auxiliary platform 23. By pulling the auxiliary platform 23, the telescopic plate 22 slides inside the main platform 21. The limiting rod 29 is then inserted into a new set of limiting holes 28 and into the sliding block 25. Finally, the internal threaded ring 210 is screwed onto the outside of the limiting rod 29. This achieves the purpose of limiting the distance between the main platform 21 and the auxiliary platform 23, and allows for the adjustment of the distance between the main driving wheel 1 and the auxiliary driving wheel 3, enabling the placement of longer goods on the main platform 21 and the auxiliary platform 23.
[0024] In this embodiment, the secondary drive wheel 3 is installed on the lower end of the secondary flat plate 23 near the mounting block 27. One end of the secondary drive wheel 3 is fixedly connected to a connector 4, and the upper end of the connector 4 is fixedly connected to a control rod 5. The control rod 5 is T-shaped.
[0025] Specifically, pulling the control lever 5 causes the secondary drive wheel 3 to roll on the ground, and causes the secondary drive wheel 3 to move the secondary plate platform 23, which in turn moves the main plate platform 21 and the secondary plate platform 23.
[0026] Working principle:
[0027] In use, first unscrew the internal threaded ring 210, then hold the handle 211 and pull it to disengage the limiting rod 29 from the inside of the sliding block 25. Then pull the limiting rod 29 out of the inner side of the limiting hole 28. Next, pull the control lever 5 to make the auxiliary drive wheel 3 roll on the ground and move the auxiliary platform 23, thus pulling the telescopic plate 22 out of the main platform 21. When the length between the main platform 21 and the auxiliary platform 23 is adjusted to match the length of the transported goods, insert the limiting rod 29 into a new set of limiting holes 28 and into the inside of the sliding block 25. Finally, screw the internal threaded ring 210 onto the outside of the limiting rod 29 to limit the main platform. The distance between the main drive wheel 1 and the auxiliary drive wheel 23 is adjusted to allow longer goods to be placed on the main drive wheel 21 and the auxiliary drive wheel 23. By pulling the auxiliary drive wheel 23, the telescopic plate 22 slides inside the main drive wheel 21. The limiting rod 29 is then inserted into a new set of limiting holes 28 and into the sliding block 25. The internal threaded ring 210 is then screwed onto the outside of the limiting rod 29. This achieves the purpose of limiting the distance between the main drive wheel 21 and the auxiliary drive wheel 23 and adjusting the distance between the main drive wheel 1 and the auxiliary drive wheel 3, allowing longer goods to be placed on the main drive wheel 21 and the auxiliary drive wheel 23.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A mine flat car with adjustable wheel base, comprising a main drive wheel (1), a secondary drive wheel (3), characterized in that: The upper end of the main drive wheel (1) is provided with a flat plate telescopic mechanism (2), the flat plate telescopic mechanism (2) includes a main flat plate table (21) installed on the upper end of the main drive wheel (1), the inside of the main flat plate table (21) is slidably connected with a telescopic plate (22), one end of the telescopic plate (22) is fixedly connected with a secondary flat plate table (23), the lower end of the main flat plate table (21) is fixedly connected with a control frame (24) on the side close to the main drive wheel (1), the inner side of the control frame (24) is slidably connected with a sliding block (25), one end of the sliding block (25) is fixedly connected with a telescopic rod (26), one end of the telescopic rod (26) is fixedly connected with a mounting block (27), the front end of the control frame (24) is provided with a limiting hole (28), the inside of the sliding block (25) is slidably connected with a limiting rod (29).
2. A wheelbase adjustable mining flatbed vehicle according to claim 1, characterised in that: The limiting rod (29) is located in the inner side of the limiting hole (28), and the outer side of the limiting rod (29) is threadedly connected with an internal thread ring (210) on the side close to the rear side of the limiting hole (28).
3. A wheelbase adjustable mining flatbed vehicle as claimed in claim 2, characterised in that: The front end of the limiting rod (29) is fixedly connected with a handle (211), the telescopic rod (26) is located in the inner side of the control frame (24), and the telescopic rod (26) is slidably connected with the control frame (24).
4. A wheelbase adjustable mining flatbed vehicle as claimed in claim 3, characterised in that: The upper end of the mounting block (27) is fixedly connected with the lower end of the secondary flat plate table (23), there are multiple groups of the limiting hole (28), and the internal thread ring (210) is in contact with the control frame (24).
5. A wheelbase adjustable mining flatbed vehicle as claimed in claim 3, characterised in that: The secondary drive wheel (3) is installed on the side of the lower end of the secondary flat plate table (23) close to the mounting block (27), and one end of the secondary drive wheel (3) is fixedly connected with a connecting piece (4).
6. A wheelbase adjustable mining flatbed vehicle as claimed in claim 5, characterised in that: The upper end of the connecting piece (4) is fixedly connected with a control rod (5), and the control rod (5) is in the shape of T.