A three-stage shock absorber steering system for personnel carriers in coal mine level tunnels

Abstract

This utility model discloses a three-stage shock-absorbing steering gear for personnel carriers in coal mine horizontal tunnels, solving the problems of poor shock absorption performance, large operating vibration, and high noise in existing devices. Its key feature is the extension of the side plates to both sides, shifting the position of the wheel axles to both ends; long slots are also provided at the lower part of both ends of the side plates, with the wheel axles placed within these slots; a spring seat plate is welded to the upper end of the side plates; an intermediate connecting plate is installed on the lower spring seat plate, welded to a connecting collar, which is fixed to the wheel axle by bolts; shock-absorbing springs are fitted onto the connecting bolts and positioned between the lower and upper spring seat plates, with two sets of four shock-absorbing springs symmetrically installed at both ends of each wheel axle. This utility model installs shock-absorbing springs and hydraulic buffers between the steering gear wheel axles and the bogie, providing excellent buffering and shock absorption, reducing vibration and noise during operation of the personnel carrier in horizontal tunnels, and improving passenger comfort.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal mine transportation equipment, specifically relating to a device for shock absorption and hydraulic buffering of steering gear wheel axle springs. Background Technology

[0002] Article 382 of the "Coal Mine Safety Regulations" stipulates that personnel should be transported mechanically in transport roadways exceeding 1.5 kilometers in length. All mines use personnel carriers in these roadways, which are pulled by electric locomotives. The steering gear is a key component in the operation of these roadway personnel carriers, playing a role in their movement, steering, and vibration damping. The current steering gear consists of a bogie, core plate, springs, and axles. The car body and steering gear are connected via a spherical core plate and a core plate shaft. The core plate is connected to an upper spring seat, under which damping springs are installed to reduce vibration. The steering gear can rotate in both horizontal and vertical planes of the track, with a maximum rotation angle of 10°. However, due to the unevenness of the mine tracks, the steering gear only provides primary vibration damping, and the springs have poor damping performance. This results in significant vibration and noise during operation of the roadway personnel carriers, leading to poor passenger comfort. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a three-stage shock-absorbing steering gear for personnel carriers in coal mine horizontal tunnels, which solves the problems of large vibration and noise in personnel carriers running on tracks and improves comfort.

[0004] This utility model includes the original bogie, core plate, spring, side plate, and wheel axle, and is characterized by further including a shock-absorbing spring, an intermediate connecting plate, and a connecting collar. 、 The system includes connecting bolts, a lower spring seat plate, and an upper spring seat plate. The side plates are extended to both sides, shifting the position of the wheel axle to both ends. Long slots are provided at the lower ends of the side plates, and the wheel axle is placed within these slots. A spring seat plate is welded to the upper end of the side plates. An intermediate connecting plate is provided on the lower spring seat plate and welded to a connecting collar, which is fixed to the wheel axle with bolts. The damping springs are fitted onto the connecting bolts and positioned between the lower and upper spring seat plates via the connecting bolts. Two sets of four damping springs are symmetrically installed at both ends of each wheel axle.

[0005] Two sets of hydraulic buffers are installed in the holes reserved in the lower spring seat plate and the upper spring seat plate. The hydraulic buffers are located on both sides of the wheel axle.

[0006] As can be seen from the above technical solution, this utility model has the following beneficial effects: by installing shock-absorbing springs and hydraulic buffers between the steering wheel axle and the bogie, the defects of large vibration and noise generated by the flat roadway personnel car during track operation are effectively solved, thereby achieving a good buffering and shock absorption effect, reducing the vibration and noise of the flat roadway personnel car during operation, and thus improving the comfort of passengers. Attached Figure Description

[0007] Figure 1 This is the front view of this utility model;

[0008] Figure 2 This is a top view of the present invention;

[0009] Figure 3 This is the left view of this utility model;

[0010] Figure 4 This is a schematic diagram of the structure of the present invention for installing a hydraulic buffer;

[0011] Figure 5 This is the front view of the side panel.

[0012] In the diagram, 1. Shock-absorbing spring, 2. Intermediate connecting plate, 3. Connecting collar, 4. Connecting bolt, 5. Lower spring seat plate, 6. Upper spring seat plate, 7. Wheel axle, 8. Side plate, 81. Long slot hole, 9. Hydraulic buffer. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] As shown in the attached diagram, a three-stage shock-absorbing steering system for personnel carriers in coal mine horizontal tunnels includes the original bogie, core plate, spring, side plates, wheel axles, etc., characterized in that it further includes a shock-absorbing spring 1, an intermediate connecting plate 2, and a connecting collar 3. 、 Connecting bolt 4, lower spring seat plate 5, and upper spring seat plate 6; extending side plate 8 to both sides to move the position of wheel axle 7 to both ends; welding upper spring seat plate 6 to the upper end of side plate 8. Upper spring seat plate 6 supports the upper part of shock-absorbing spring 1; lower spring seat plate 5 supports the lower part of shock-absorbing spring 1.

[0015] An intermediate connecting plate 2 is provided on the lower spring seat plate 5. The intermediate connecting plate 2 is welded to the connecting collar 3, and the connecting collar 3 is fixed to the wheel axle 7 by bolts.

[0016] The damping spring 1 is sleeved on the connecting bolt 4 and is set between the lower spring seat plate 5 and the upper spring seat plate 6 through the connecting bolt 4. Two sets of damping springs 1 are symmetrically installed at both ends of each wheel axle 7, for a total of four damping springs 1. When vibration occurs during the operation of the wheel axle 7, the damping spring 1 dampens and buffers the vibration, thus playing a secondary role in vibration reduction and noise reduction.

[0017] Combination Figure 3 , 5 As shown, the lower part of both ends of the side plate 8 is also provided with long slot holes 81, and the wheel axle 7 is placed in the space of the long slot holes 81, so that the bogie can move up and down when the shock absorber spring 1 is subjected to force displacement.

[0018] like Figure 4 As shown, two sets of hydraulic dampers 9 are installed in the pre-drilled holes of the lower spring seat plate 5 and the upper spring seat plate 6. The hydraulic dampers 9 are located on both sides of the wheel axle 7. The upper end is inserted into the pre-drilled hole of the upper spring seat plate 6 and fixed, and the lower end is inserted into the pre-drilled hole of the lower spring seat plate 5 and fixed. This can further buffer and decompose the vibration generated by the wheel axle during operation, thereby further improving the shock absorption effect of the steering gear and playing a role in three-level shock absorption and noise reduction.

Claims

1. A three-stage damping steering gear for a coal mine roadway man-car, comprising an original bogie, a core disc, a spring, a side plate and an axle, characterized in that: It also includes a shock-absorbing spring (1), an intermediate connecting plate (2), and a connecting collar (3). 、 Connecting bolts (4), lower spring seat plate (5), upper spring seat plate (6); extend the side plate (8) to both sides so that the position of the wheel axle (7) moves to both ends; the lower part of both ends of the side plate (8) is also provided with long slots (81), and the wheel axle (7) is placed in the space of the long slots (81); the upper end of the side plate (8) is welded with the upper spring seat plate (6); the lower spring seat plate (5) is provided with an intermediate connecting plate (2), the intermediate connecting plate (2) is welded to the connecting collar (3), and the connecting collar (3) is fixed to the wheel axle (7) by bolts; the shock-absorbing spring (1) is sleeved on the connecting bolt (4) and is set between the lower spring seat plate (5) and the upper spring seat plate (6) by the connecting bolt (4); two sets of shock-absorbing springs (1) are symmetrically installed at both ends of each wheel axle (7), for a total of 4 shock-absorbing springs (1).

2. The three-stage shock absorber for a coal mine gateway man-carriage according to claim 1, characterized in that: The lower spring seat plate (5) and the upper spring seat plate (6) are provided with two sets of hydraulic buffers (9) installed in the reserved holes, and the hydraulic buffers (9) are located on both sides of the wheel shaft (7).

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