Mine car chassis
By setting movable axles and limiting components on the mine car chassis, the problem of frequent derailment of mine cars in underground mines has been solved, enabling mine cars to adaptively steer in curves and resume straight-line travel, thus improving safety and work efficiency.
Patent Information
- Application Number
- CN202520523694.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-24
AI Technical Summary
The existing 600mm gauge V-type tipper mine cars frequently derail in underground mines, leading to safety accidents and low work efficiency, and the track laying is difficult to meet design requirements.
Design a mining car chassis that employs a movable axle and limiting component structure, enabling the axle to automatically adjust its direction when turning and return to a straight-line angle after exiting a curve. By setting limiting components within the first axle space to restrict axle movement, the flexibility and adaptability of the mining car are enhanced.
Without adding extra components, it significantly improves the flexibility and adaptability of mining cars, reduces derailment, simplifies track laying requirements, reduces construction costs, and improves work efficiency.
Smart Images
Figure CN223778353U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of mining trucks, and in particular to a mining truck chassis. Background Technology
[0002] In recent years, my country's mining industry has developed rapidly. However, underground mine development and transportation have continued to rely on 600mm gauge V-type tipper mine cars, a type used decades ago. These cars are compact, flexible, simple, durable, and easy to maintain, making them well-suited to various underground mining environments. However, their use has revealed some drawbacks, such as the inability to steer, making them prone to derailment and accidents. Furthermore, re-tracking them is difficult, time-consuming, and labor-intensive, significantly impacting the effective working time of each shift. The existing mine car chassis can be referenced... Figure 1 The state of the mine car when turning can be referred to Figure 2 .
[0003] Analysis of the reasons for the mine car derailing at the bend:
[0004] Mining car derailments are related to track width, wheelbase, curve radius, outer rail elevation distance at curves, track gauge widening distance at curves, and operating speed. Specifically, for a 600mm gauge mining car with a 540mm wheelbase, and a curve radius of curvature at a speed less than 1.5m / s:
[0005] a. Curve radius R ≥ 7S 轴距 That is, R≥3780mm;
[0006] b. The distance the outer rail of the curve is raised by ΔH = S 轨距 *V 2 / (10*R), that is, △H=35.7mm;
[0007] c. The gauge widening distance at the curve is ΔS = 0.18 a , a = S 轴距 2 / R, that is, a=77, △S=4.5mm.
[0008] The above calculations show that for a mine car with a wheelbase of 540mm and a track gauge of 600mm, the minimum curve radius should be no less than 3780mm when laying tracks underground; the outer rail elevation distance should be no less than 35.7mm; and the track gauge widening distance at curves should be no less than 4.5mm.
[0009] However, in reality, when laying tracks underground, mines often encounter difficulties in meeting design requirements due to the constraints created by tunnel development, unclear requirements during track laying, and limited construction organization. This results in mine cars frequently derailing during underground operation. Therefore, there is an urgent need for a mine car chassis to solve the practical problem of derailment. Utility Model Content
[0010] To address the practical problem of mine cars derailing, this application provides a mine car chassis, employing the following technical solution:
[0011] A mining car chassis, comprising:
[0012] The first axle holder is installed at the bottom of the mine car and has a first axle space.
[0013] The axle is movably disposed within the first axle space;
[0014] The first limiting component is installed on the first axle holder and is used to limit the movement of the axle towards or away from the mine car.
[0015] By adopting the above technical solution, since the axle can be movably installed within the first axle space (meaning the width of the first axle space is greater than the diameter of the axle), the axle can move within this space. However, because the first limiting component restricts the axle's movement towards or away from the mine car, each axle can automatically adjust its direction according to the track curvature during turning, allowing the mine car to pass through curves. After exiting a curve, the mine car wheels can automatically return to their straight-line angle under the clamping of the rails. Without adding any extra components, this design retains the advantages of the original mine car and gives it a certain amount of follow-up steering capability, significantly enhancing its flexibility. This simple and effective method successfully overcomes the drawback of mine cars derailing. Therefore, this modification scheme is not only simple, low-cost, and highly operable, but also has significant universality and promotional value, as verified by actual experiments.
[0016] Optionally, the width of the first axle space is 14 mm larger than the diameter of the axle, and when the mine car is traveling straight, the distance between the inner wall of one side of the first axle space and the axle is 7 mm.
[0017] Optionally, the mining truck chassis further includes:
[0018] The second axle holder has a second axle space and is installed at the bottom of the mine car. The width of the second axle space is greater than that of the first axle space. The first axle holder is composed of two axle halves. The two axle halves are slidably connected to the bottom of the mine car, either apart or facing each other.
[0019] The second limiting component is installed on the second axle holder and is used to limit the movement of the axle towards or away from the mine car.
[0020] By adopting the above technical solution, since the width of the second axle space is greater than the width of the first axle space, when it is necessary to increase the steering angle of the axle, the two axle halves can be driven to move apart, thereby indirectly increasing the width of the first axle space. When it is not necessary to increase the steering angle of the axle, the second axle space will not affect the steering of the axle, thereby improving the applicability of the mine car to different tracks.
[0021] Optionally, the mining truck chassis further includes:
[0022] A sliding plate is slidably connected to the bottom of the mine car and to the axle half seat.
[0023] By adopting the above technical solution, the axle half seat is installed with the mine car through a sliding plate, so that the installation of the axle half seat will not affect its own sliding, and it also facilitates the disassembly of the axle half seat from the mine car.
[0024] Optionally, the mining truck chassis further includes:
[0025] A two-way cylinder is installed at the bottom of the mine car, and the piston rod is connected to the axle half seat on the corresponding side.
[0026] By adopting the above technical solution, when the piston rod of the bidirectional cylinder extends, the two axle halves move away from each other, and when the piston rod of the bidirectional cylinder retracts, the two axle halves move towards each other.
[0027] Optionally, both the first axle holder and the second axle holder are provided with adjustment grooves; the first limiting member is slidably connected to the first axle holder through the adjustment groove, and the second limiting member is slidably connected to the second axle holder through the adjustment groove;
[0028] The mining car chassis also includes:
[0029] The support rod is threadedly connected to the first axle holder and the second axle holder, respectively.
[0030] A support bracket is fixedly connected to one end of the support rod that is placed in the adjustment groove; the support bracket abuts against the first limiting member and the second limiting member respectively.
[0031] By adopting the above technical solution, the position of the support bracket can be adjusted by rotating the support rod, thereby making the first axle space or the second axle space suitable for axles of different diameters.
[0032] In summary, this application has at least the following beneficial effects:
[0033] The design of the first axle space aims to enable each axle to automatically adjust its direction according to the curvature of the track during turning, ensuring the mine car smoothly navigates curves. After exiting the curve, the mine car wheels automatically return to their straight-line angle under the constraint of the rails. This design, without adding extra components, retains the advantages of the original mine car while giving it a certain degree of adaptive steering capability, enhancing its flexibility. This simple yet effective method successfully overcomes the drawback of mine cars derailing. Therefore, this modification scheme is characterized by its simplicity, low cost, and high operability, and its effectiveness has been verified through actual experiments, demonstrating broad applicability and promotional value. Attached Figure Description
[0034] Figure 1 This is a structural schematic diagram of the mining truck chassis in a straight-moving state in the background art;
[0035] Figure 2 This is a structural schematic diagram of a mining truck chassis in a turning state in the background art;
[0036] Figure 3 This is a schematic diagram of the structure of the first axle holder of this application;
[0037] Figure 4 This is a structural schematic diagram of the mine car chassis in a straight-moving state as described in this application;
[0038] Figure 5 This is a structural schematic diagram of the mine car chassis in the turning state of this application;
[0039] Figure 6 This is a structural schematic diagram of another embodiment of the mining truck chassis of this application;
[0040] Figure 7 This is a schematic diagram illustrating another embodiment of the second axle holder in this application.
[0041] Explanation of reference numerals in the attached drawings: 100, first axle holder; 101, first axle space; 110, first limiting member; 120, axle half seat; 130, sliding plate; 140, double-acting cylinder; 200, axle; 300, second axle holder; 301, second axle space; 310, second limiting member; 401, adjusting groove; 410, support rod; 411, support bracket. Detailed Implementation
[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the appendices of the embodiments of this utility model will be described below. Figure 1 - Appendix Figure 7The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0043] This application discloses a mining truck chassis. (Refer to...) Figure 3-5 As one embodiment of a mining car chassis, the mining car chassis may include a first axle holder 100, an axle 200, and a first limiting member 110.
[0044] The first axle holder 100 is bolted to the bottom of the mine car and has a first axle space 101. The axle 200 is movably disposed within the first axle space 101 (in related technologies, the axle is in contact with the inner wall of the first axle space, with no room for movement). A first limiting member 110 is installed on the first axle holder 100 to restrict the movement of the axle 200 towards or away from the mine car (vertical movement). The width of the first axle space 101 is 14mm larger than the diameter of the axle 200, and when the mine car is moving straight, the distance between one side of the inner wall of the first axle space 101 and the axle 200 is 7mm, meaning the width on both sides of the axle 200 axis is equal. The first limiting member 110 can be a limiting shaft, which passes through the first axle holder 100 and is locked by a pin. The implementation of the first limiting member 110 is not limited; its purpose is to restrict the vertical movement of the axle 200 without affecting its normal operation.
[0045] Reference Figure 6 As another embodiment of the mining car chassis, the mining car chassis may also include a second axle bracket 300 and a second limiting member 310.
[0046] The second axle holder 300 is bolted to the bottom of the mine car and has a second axle space 301, the width of which is greater than that of the first axle space 101. It should be noted that in other embodiments, a third axle holder, a fourth axle holder, etc., can also be provided, with different widths of the axle spaces within the axle holders to allow for adjustments to the steering angle of the axle 200.
[0047] The second limiting member 310 is installed on the second axle holder 300, and similarly restricts the movement of the axle 200 in the direction of moving closer to or further away from the mine car (vertical movement). The second limiting member 310 can be the same as the first limiting member 110.
[0048] In this embodiment, the first axle holder 100 is composed of two axle half seats 120, that is, the space of the first axle 200 is composed of two axle half seats 120; each of the two axle half seats 120 is bolted with a sliding plate 130, the sliding plate 130 is slidably connected to the bottom of the mine car, and the two sliding plates 130 slide towards each other or away from each other.
[0049] In order to achieve the sliding of the two sliding plates 130, a double-acting cylinder 140 is horizontally installed at the bottom of the mine car, and the piston rod of the double-acting cylinder 140 is fixedly connected to the sliding plate 130 on the corresponding side.
[0050] Furthermore, in this embodiment, the first limiting member 110 is also divided into two parts, one part is installed on one axle half seat 120, and the other part is installed on the other axle half seat 120.
[0051] Reference Figure 7 In another embodiment of the first axle holder 100 and the second axle holder 300, an adjustment groove 401 is provided on both the first axle holder 100 and the second axle holder 300. The first limiting member 110 is slidably connected to the first axle holder 100 through the adjustment groove 401, and the second limiting member 310 is slidably connected to the second axle holder 300 through the adjustment groove 401.
[0052] Support rods 410 are threadedly connected to both the first axle holder 100 and the second axle holder 300. A support bracket 411 is fixedly connected to one end of the support rod 410 that is placed in the adjustment groove 401. The support bracket 411 abuts against the first limiting member 110 and the second limiting member 310 respectively, and the limiting member is corresponding to the support.
[0053] By setting up the support rod 410 and the support bracket 411, the position of the corresponding limiting component can be adjusted according to the different diameters of the axle 200.
[0054] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.
Claims
1. A mining car chassis, characterized in that, include: The first axle holder (100) is installed at the bottom of the mine car and has a first axle space (101). The axle (200) is movably disposed within the first axle space (101); The first limiting member (110) is installed on the first axle holder (100) to restrict the movement of the axle (200) toward or away from the mine car.
2. A mining car chassis according to claim 1, characterized in that, The width of the first axle space (101) is 14 mm larger than the diameter of the axle (200), and when the mine car is traveling straight, the distance between the inner wall of one side of the first axle space (101) and the axle (200) is 7 mm.
3. A mining car chassis according to claim 1, characterized in that, The mining car chassis also includes: The second axle holder (300) has a second axle space (301) and is installed at the bottom of the mine car. The width of the second axle space (301) is greater than that of the first axle space (101). The first axle holder (100) is composed of two axle halves (120). The two axle halves (120) are slidably connected to the bottom of the mine car, either apart or facing each other. The second limiting member (310) is installed on the second axle holder (300) to restrict the movement of the axle (200) toward or away from the mine car.
4. A mining car chassis according to claim 3, characterized in that, The mining car chassis also includes: A sliding plate (130) is slidably connected to the bottom of the mine car and connected to the axle half seat (120).
5. A mining car chassis according to claim 4, characterized in that, The mining car chassis also includes: A two-way cylinder (140) is installed at the bottom of the mine car, and the piston rod is connected to the axle half seat (120) on the corresponding side.
6. A mining car chassis according to claim 3, characterized in that, The first axle holder (100) and the second axle holder (300) are both provided with adjustment grooves (401); the first limiting member (110) is slidably connected to the first axle holder (100) through the adjustment groove (401), and the second limiting member (310) is slidably connected to the second axle holder (300) through the adjustment groove (401); The mining car chassis also includes: The support rod (410) is threadedly connected to the first axle holder (100) and the second axle holder (300) respectively; The support bracket (411) is fixedly connected to one end of the support rod (410) placed in the adjustment groove (401); the support bracket (411) abuts against the first limiting member (110) and the second limiting member (310) respectively.