Limiting device of coal mining machine

Abstract

The utility model belongs to the technical field of coal mining equipment, and particularly discloses a coal mining machine limiting device which comprises a bottom plate, a sliding rail is assembled on the bottom plate, a coal mining machine body is assembled on the sliding rail, assembly plates are assembled on the bottom plate and located on the front side and the rear side of the sliding rail respectively, and a trigger plate is movably assembled on each assembly plate. A first shock absorber is movably assembled between each trigger plate and each assembly plate, a pressure sensor is assembled on each assembly plate and located behind each trigger plate, and an elastic blocking belt is assembled between every two trigger plates; according to the device, buffering force unloading stopping is carried out while limiting is carried out, stopping limiting is carried out firstly when the coal mining machine is close to the two ends, reverse jacking stopping is triggered for the second time, and the situation that due to emergency stopping, vibration is generated in the coal mining machine, and contact of parts is poor is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal mining equipment, specifically relating to a coal mining machine limit device. Background Technology

[0002] A coal mining machine is a large and complex system integrating mechanical, electrical, and hydraulic components. It operates in harsh environments, and a malfunction can disrupt the entire coal mining operation, causing significant economic losses. With the development of the coal industry, coal mining machines have become increasingly functional, and their structure and composition have become more complex.

[0003] Since machines generally have inertia during movement, when the trigger mechanism on the existing coal mining machine comes into contact with the baffle, the coal mining machine may continue to move under the action of inertia, which will cause impact damage to the baffles at both ends of the track. Furthermore, directly stopping the machine will cause vibration inside the coal mining machine, resulting in poor contact of internal parts. There may already be technical solutions to solve the above-mentioned technical problems. In view of this, this case aims to provide a replacement or alternative technical solution. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a coal mining machine limiting device, which solves the technical problems of existing coal mining machines where, when the trigger mechanism contacts the baffle, the coal mining machine may continue to move under the action of inertia, causing impact damage to the baffles at both ends of the track, and direct stopping will cause vibration inside the coal mining machine, resulting in poor contact of internal parts.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A coal mining machine limiting device includes a base plate, a slide rail mounted on the base plate, a coal mining machine body mounted on the slide rail, mounting plates mounted on the base plate and on both sides of the slide rail, a trigger plate movably mounted on each mounting plate, a first shock absorber movably mounted between each trigger plate and each mounting plate, a pressure sensor mounted on each mounting plate and behind each trigger plate, and an elastic blocking strip mounted between every two trigger plates.

[0007] Preferably, a limiting platform is mounted on the base plate and on both sides of the slide rail, a hydraulic cylinder is embedded in the side wall of each limiting platform, a top column is mounted on the telescopic end of each hydraulic cylinder, and a top plate is mounted on the end face of each top column.

[0008] Preferably, each of the top plate sidewalls is equipped with four second shock absorbers, and each of the four second shock absorbers telescopic ends is equipped with a contact plate.

[0009] Preferably, each of the contact plates has a rubber layer mounted on its sidewall.

[0010] Preferably, each of the assembly plates is fitted with two reinforcing ribs between itself and the base plate.

[0011] Preferably, a limiting telescopic rod is respectively installed between each of the limiting platforms and each of the top plates and above each of the top columns.

[0012] The beneficial effects of this utility model are as follows:

[0013] This device achieves both limit setting and buffer unloading stop, so that when the coal mining machine approaches both ends, it is first blocked and limited, and then the reverse thrust is triggered to stop it on the second trigger, preventing the internal vibration of the coal mining machine from causing poor contact of parts due to emergency stop. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a coal mining machine limiting device according to the present invention.

[0015] Figure 2 This is a top view cross-sectional structural diagram of the coal mining machine limiting device described in this utility model.

[0016] Figure 3 This is a side view sectional structural diagram of a coal mining machine limiting device according to the present invention.

[0017] Figure 4 This utility model Figure 3 A partially enlarged structural diagram of a coal mining machine limiting device.

[0018] In the diagram: 1-Base plate; 2-Slide rail; 3-Coal mining machine body; 4-Assembly plate; 5-Trigger plate; 6-First shock absorber; 7-Pressure sensor; 8-Elastic barrier belt; 9-Limiting platform; 10-Hydraulic cylinder; 11-Top column; 12-Top plate; 13-Second shock absorber; 14-Contact plate; 15-Rubber layer; 16-Reinforcing rib; 17-Limiting telescopic rod. Detailed Implementation

[0019] 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.

[0020] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without explaining the electrical control.

[0021] 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.

[0022] Example: Refer to Figure 1-4 A coal mining machine limiting device includes a base plate 1, a slide rail 2 mounted on the base plate 1, a coal mining machine body 3 mounted on the slide rail 2, mounting plates 4 mounted on the base plate 1 and located on the front and rear sides of the slide rail 2, a trigger plate 5 movably mounted on each mounting plate 4, a first shock absorber 6 movably mounted between each trigger plate 5 and each mounting plate 4, a pressure sensor 7 mounted on each mounting plate 4 and located behind each trigger plate 5, and an elastic blocking strip 8 mounted between every two trigger plates 5; a limiting platform 9 is mounted on the base plate 1 and located on both sides of the slide rail 2, each... Hydraulic cylinders 10 are embedded in the side walls of the limiting platform 9. Each hydraulic cylinder 10 is equipped with a top column 11 on its telescopic end. Each top column 11 is equipped with a top plate 12 on its end face. Four second shock absorbers 13 are equipped on the side walls of each top plate 12. Each of the four second shock absorbers 13 is equipped with a contact plate 14 on its telescopic end. A rubber layer 15 is equipped on the side walls of each contact plate 14. Two reinforcing ribs 16 are installed between each mounting plate 4 and the base plate 1. A limiting telescopic rod 17 is installed between each limiting platform 9 and each top plate 12 and above each top column 11.

[0023] The specific working principle is as follows:

[0024] The coal mining machine body 3 moves on the slide rail 2 mounted on the base plate 1. When it moves to the sides, the coal mining machine body 3 is blocked by the elastic barrier belt 8 inside the machine box. The elastic barrier belt 8 is subjected to force, pulling the trigger plate 5. The trigger plate 5 pulls the first shock absorber 6. The trigger plate 5 moves away from the pressure sensor 7. The pressure sensor 7 does not detect pressure and sends a signal. At the same time, the elastic barrier belt 8 and the first shock absorber 6 perform a secondary buffering and stopping. After receiving the signal, the programmable controller mounted on it issues a control command. The corresponding hydraulic cylinder 10 mounted in the limit platform 9 pushes the top column 11 mounted on its telescopic end to move horizontally, causing the top plate 12 mounted on the top column 11 to move towards the coal mining machine body 3. After moving to the set position, it stops. The coal mining machine body 3 touches the contact plate 14. The contact plate 14 squeezes the second shock absorber 13 for buffering. After the buffering and force relief is completed, the hydraulic cylinder 10 slowly retracts. While limiting the movement, the hydraulic cylinder 10 slowly contracts and stops after setting the position, thus stopping the machine. This prevents the coal mining machine body 3 from vibrating due to direct stopping, which could lead to poor contact of internal parts. The rubber layer 15 protects the contact plate 14, and the reinforcing rib 16 enhances the stability of the assembly plate 4. The limiting telescopic rod 17 moves with the extension end of the hydraulic cylinder 10 to limit the movement, sharing the lateral force on the top column 11 and preventing it from breaking. After the coal mining machine body 3 stops, when it moves in the opposite direction, the elastic barrier band 8 resets. The first shock absorber 6 pulls the trigger plate 5 to reset the pressure sensor 7. When the pressure sensor 7 senses the pressure, it sends a signal. The programmable controller installed on it receives the signal and sends a control command, causing the corresponding hydraulic cylinder 10 to reset. When the coal mining machine body 3 reaches the other side, the rising steps are repeated for buffering and stopping.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shearer position limiting device comprising a base plate, characterised in that: The base plate (1) is equipped with a slide rail (2), the slide rail (2) is equipped with a coal mining machine body (3), the base plate (1) is equipped with an assembly plate (4) on the front and rear sides of the slide rail (2), each assembly plate (4) is movably equipped with a trigger plate (5), each trigger plate (5) is movably equipped with a first shock absorber (6) between each assembly plate (4), each assembly plate (4) is equipped with a pressure sensor (7) on the back of each trigger plate (5), and each pair of trigger plates (5) is equipped with an elastic barrier belt (8).

2. A shearer position limiting device according to claim 1 wherein: Limiting platforms (9) are respectively mounted on the base plate (1) and on both sides of the slide rail (2). A hydraulic cylinder (10) is embedded in the side wall of each limiting platform (9). A top column (11) is respectively mounted on the telescopic end of each hydraulic cylinder (10). A top plate (12) is respectively mounted on the end face of each top column (11).

3. A shearer position limiting device according to claim 2 wherein: Four second shock absorbers (13) are respectively installed on the side wall of the top plate (12), and a contact plate (14) is respectively installed on the telescopic end of each of the four second shock absorbers (13).

4. A shearer position limiting device according to claim 3 wherein: Rubber layers (15) are respectively assembled on the side wall of the contact plate (14).

5. A shearer position limiting device according to claim 1 wherein: Two reinforcing ribs (16) are respectively installed between the assembly plate (4) and the base plate (1).

6. A shearer position limiting device according to claim 2 wherein: Limiting telescopic rods (17) are respectively installed between the limiting platform (9) and each of the top plates (12) and above each of the top columns (11).

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