Mine belt conveyor protection device

Abstract

This utility model discloses a protective device for a mining belt conveyor, belonging to the technical field of mining equipment. The protective device includes a conveyor frame and a drive roller assembly, the drive roller assembly being mounted on the conveyor frame, with a conveyor belt disposed thereon. It also includes a pull-cord switch, a pull rope, and a sealing mechanism, the pull rope being connected to the pull-cord switch. The sealing mechanism includes an outer sealing sleeve, an inner pressure plate, an inner sealing ring, a fastening mechanism, and an outer pressure plate, with the outer sealing sleeve disposed on the outer pressure plate. The protective device for the mining belt conveyor provided by this utility model uses an outer sealing sleeve against the housing of the pull-cord switch, providing a seal. This prevents gas from entering the pull-cord switch's interior from the connection point between the outer sealing sleeve, the outer pressure plate, and the pull-cord switch. It also prevents solid particles in the mining area from adhering to the electrical components inside the pull-cord switch, thus preventing the switch from malfunctioning.

Description

Technical Field

[0001] This utility model belongs to the technical field of mining equipment, specifically relating to a protective device for mining belt conveyors. Background Technology

[0002] Two-way pull rope switches are frequently used at conveyors. They are used to prevent emergencies. Pulling the pull rope in the switch disconnects the power to the conveyor, allowing it to be stopped quickly.

[0003] However, the following problems exist in the use of pull-wire switches in the mining area:

[0004] Gases in the mining area can easily enter the pull-wire switch through the connection between the pull rope and the pull-wire switch. The gas in the mining area has a high content of solid particles, and these particles contain a high amount of carbon powder. These solid particles entering the pull-wire switch can easily damage the internal electrical components, causing the pull-wire switch to malfunction and fail to properly protect the electrical components inside the conveyor. Therefore, this application proposes a protection device for mining belt conveyors. Utility Model Content

[0005] The purpose of this invention is to provide a protective device for mining belt conveyors to solve the problem mentioned in the background art that gas in the mining area can easily enter the pull-wire switch through the connection between the pull rope and the pull-wire switch, thereby causing the pull-wire switch to malfunction.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective device for a mining belt conveyor, comprising a conveyor frame and a drive roller assembly, wherein the drive roller assembly is mounted on the conveyor frame and a conveyor belt is provided at the drive roller assembly;

[0007] It also includes a pull-cord switch, a pull cord, and a sealing mechanism, wherein the pull cord is connected to the pull-cord switch;

[0008] The sealing mechanism includes an outer sealing sleeve, an inner pressure plate, an inner sealing ring, a fastening mechanism, and an outer pressure plate. The outer sealing sleeve is mounted on the outer pressure plate, and the outer pressure plate is connected to the housing of the pull-cord switch.

[0009] The fastening mechanism is used to connect the outer sealing sleeve and the inner sealing ring. The inner sealing ring is fitted on the outside of the pull rope, and the outer wall of the inner sealing ring is in contact with the outer wall of the pull rope.

[0010] Preferably, the conveying frame includes a top plate, which is inclined to one side.

[0011] Preferably, the drive roller assembly includes an intermediate roller and two side rollers, with the two side rollers located on opposite sides of the intermediate roller, and the height of the side rollers closer to the intermediate roller being lower than the height of the side rollers farther from the intermediate roller.

[0012] Preferably, the top and bottom of the conveying frame are respectively provided with two guide rollers.

[0013] Preferably, the pull-cord switch is located at the lower end of the conveyor frame and is connected to a power source.

[0014] Preferably, the pull-cord switch has a connecting shaft inside, and a vertical groove is opened in the connecting shaft, through which the pull cord passes.

[0015] Preferably, the fastening mechanism includes an inner pressure plate, a fastening screw, a nut, and an elastic washer. The inner pressure plate has an arc-shaped portion. The fastening screw passes through two inner pressure plates, and both ends of the fastening screw are connected to two nuts by threads. The elastic washer is located between the nut and the inner pressure plate.

[0016] Preferably, there are two inner pressure plates, and the two inner pressure plates are located on both sides of the outer sealing sleeve.

[0017] Preferably, the inner ring of the outer sealing sleeve is provided with two grooves, and two inner pressure plates press against the two grooves respectively.

[0018] Preferably, the sealing mechanism further includes a wear-resistant sleeve and a mounting sleeve, wherein the wear-resistant sleeve is inserted into the mounting sleeve and the pull rope passes through the wear-resistant sleeve.

[0019] Beneficial effects:

[0020] The protective device for mining belt conveyors provided by this utility model has an outer sealing sleeve that abuts against the housing of the pull-cord switch, serving a sealing function. This prevents gas from entering the interior of the pull-cord switch from the connection point between the outer sealing sleeve, the outer pressure plate, and the pull-cord switch. The elastic force of the elastic washer can compress the inner pressure plate, causing it to move towards and compress the inner sealing ring. The two inner pressure plates on both sides simultaneously compress the inner sealing ring, pressing it against the outer surface of the pull rope. In this way, the pull rope and the inner sealing ring can fit tightly together, preventing gas from entering the interior of the pull-cord switch through the connection point between the pull rope and the inner sealing ring. This also prevents solid particles in the air in the mining area from adhering to the electrical components inside the pull-cord switch, thus preventing the pull-cord switch from malfunctioning. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the protective device for a mining belt conveyor in this utility model;

[0022] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0023] Figure 3 This is a schematic diagram of the pull-cord switch, pull rope, and sealing mechanism in this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the sealing mechanism in this utility model;

[0025] Figure 5 This utility model Figure 4 A magnified structural diagram at point B in the middle.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Conveyor frame; 2. Drive roller assembly; 201. Intermediate roller; 202. Side roller; 3. Guide roller; 4. Pull-wire switch; 401. Connecting shaft; 402. Vertical groove; 5. Pull rope; 6. Sealing mechanism; 601. Outer sealing sleeve; 602. Inner pressure plate; 603. Inner sealing ring; 604. Fastening screw; 605. Elastic washer; 606. Outer pressure plate; 607. Wear-resistant sleeve; 608. Mounting sleeve. Detailed Implementation

[0028] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0029] like Figures 1-5 As shown, the protective device for a mining belt conveyor provided in this embodiment of the utility model includes a conveying frame 1 and a drive roller assembly 2. The drive roller assembly 2 is installed on the conveying frame 1. The conveying frame 1 includes a top plate, which is inclined to one side. The entire conveying frame 1 and the drive roller assembly 2 on it are distributed inclined to one side. It is mainly used to transport coal from a low place to a high place. The drive roller assembly 2 is arranged along the top plate. It should be noted that a conveyor belt is provided at the drive roller assembly 2, and the conveyor belt is sleeved with the conveying frame 1.

[0030] For reference Figure 1 The drive roller assembly 2 includes an intermediate roller 201 and side rollers 202. There are two side rollers 202, and the two side rollers 202 are located on both sides of the intermediate roller 201. The height of the side roller 202 closer to the intermediate roller 201 is lower than the height of the side roller 202 farther away from the intermediate roller 201. The conveyor belt is set on the drive roller assembly 2, so that the conveyor belt is curved as a whole. In this way, the middle of the entire conveyor belt is concave and the sides are raised, so that the coal on the conveyor belt is less likely to fall off during the transportation process.

[0031] Specifically, two guide rollers 3 are respectively installed at the top and bottom of the conveyor frame 1, and the guide rollers 3 are straight rollers.

[0032] To ensure timely shutdown of the conveyor in case of malfunction, the conveyor also includes a pull-cord switch 4, a pull rope 5, and a sealing mechanism 6. The pull-cord switch 4 is located at the lower end of the conveyor frame 1 and is connected to the power supply. The pull rope 5 is connected to the pull-cord switch 4. The pull-cord switch 4 can be a KLT2-I model. The electrical components inside the conveyor are connected to the power supply in parallel and series. The pull-cord switch 4 is located on the main circuit of the electrical components connected to the power supply. When the pull rope 5 in the pull-cord switch 4 is pulled, it can disconnect the main circuit connected to the power supply, thereby cutting off the power to the electrical components on the conveyor. Pulling it again will close the circuit and restore power.

[0033] Specifically, the pull switch 4 has a connecting shaft 401 inside, and a vertical groove 402 is opened in the connecting shaft 401, through which the pull rope 5 passes.

[0034] The sealing mechanism 6 is designed to seal the pull rope 5 and prevent gas from entering the pull switch 4 through the connection between the pull rope 5 and the pull switch 4. Since the gas in the mining area has a high content of solid particles, especially carbon powder, these particles can easily damage the electrical components inside the pull switch 4, causing it to malfunction and fail to properly protect the electrical components inside the conveyor. The sealing mechanism 6 includes an outer sealing sleeve 601, an inner pressure plate 602, an inner sealing ring 603, a fastening mechanism, and an outer pressure plate 606. The outer sealing sleeve 601 is mounted on the outer pressure plate 606, which is connected to the housing of the pull switch 4. The outer sealing sleeve 601 abuts against the housing of the pull switch 4, providing a seal and preventing gas from entering the pull switch 4 through the connection between the outer sealing sleeve 601, the outer pressure plate 606, and the pull switch 4.

[0035] Specifically, the fastening mechanism is used to connect the outer sealing sleeve 601 and the inner sealing ring 603. The inner sealing ring 603 is fitted on the outside of the pull rope 5, and the outer wall of the inner sealing ring 603 is in contact with the outer wall of the pull rope 5.

[0036] More specifically, the fastening mechanism includes an inner pressure plate 602, a fastening screw 604, a nut, and an elastic washer 605. The inner pressure plate 602 has an arc-shaped part inside, and there are two inner pressure plates 602, which are located on both sides of the outer sealing sleeve 601. The inner ring of the outer sealing sleeve 601 has two grooves, and the two inner pressure plates 602 press against the two grooves respectively. The fastening screw 604 passes through the two inner pressure plates 602, and the two ends of the fastening screw 604 are connected to the two nuts by threads. The elastic washer 605 is located between the nut and the inner pressure plate 602. The elastic force of the elastic washer 605 can compress the inner pressure plate 602, causing the inner pressure plate 602 to move closer to and compress the inner sealing ring 603. The two inner pressure plates 602 on both sides simultaneously compress the inner sealing ring 603, causing the inner sealing ring 603 to press against the outer surface of the pull rope 5. In this way, the pull rope 5 and the inner sealing ring 603 can fit tightly together, preventing gas from entering the interior of the pull switch 4 through the connection between the pull rope 5 and the inner sealing ring 603.

[0037] It should be noted that the sealing mechanism 6 also includes a wear-resistant sleeve 607 and a mounting sleeve 608. The wear-resistant sleeve 607 is inserted into the mounting sleeve 608, and the pull rope 5 passes through the wear-resistant sleeve 607. The wear-resistant sleeve 607 is located inside the inner sealing ring 603, serving as a secondary gas isolation mechanism. Together, these two mechanisms can isolate most of the gas in the mining area, preventing the pull-cord switch 4 from short-circuiting due to external gas entering and contacting the carbon powder.

[0038] In summary, this utility model embodiment provides a protective device for a mining belt conveyor. The outer sealing sleeve 601 abuts against the housing of the pull switch 4, serving a sealing function. This prevents gas from entering the interior of the pull switch 4 from the connection point between the outer sealing sleeve 601, the outer pressure plate 606, and the pull switch 4. The elastic force of the elastic washer 605 can compress the inner pressure plate 602, causing it to move closer to and compress the inner sealing ring 603. The two inner pressure plates 602 on both sides simultaneously compress the inner sealing ring 603, pressing it against the outer surface of the pull rope 5. In this way, the pull rope 5 and the inner sealing ring 603 can fit tightly together, preventing gas from entering the interior of the pull switch 4 through the connection point between the pull rope 5 and the inner sealing ring 603.

[0039] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A protective device for a mining belt conveyor, comprising a conveyor frame (1) and a drive roller assembly (2), wherein the drive roller assembly (2) is mounted on the conveyor frame (1), characterized in that, A conveyor belt is provided at the drive roller assembly (2); It also includes a pull-cord switch (4), a pull rope (5), and a sealing mechanism (6), wherein the pull rope (5) is connected to the pull-cord switch (4); The sealing mechanism (6) includes an outer sealing sleeve (601), an inner pressure plate (602), an inner sealing ring (603), a fastening mechanism, and an outer pressure plate (606). The outer sealing sleeve (601) is mounted on the outer pressure plate (606), and the outer pressure plate (606) is connected to the housing of the pull-cord switch (4). The fastening mechanism is used to connect the outer sealing sleeve (601) and the inner sealing ring (603). The inner sealing ring (603) is sleeved on the outside of the pull rope (5), and the outer wall of the inner sealing ring (603) is in contact with the outer wall of the pull rope (5).

2. The protective device for a mining belt conveyor as described in claim 1, characterized in that, The conveying frame (1) includes a top plate, which is inclined to one side.

3. The protective device for a mining belt conveyor as described in claim 1, characterized in that, The drive roller assembly (2) includes an intermediate roller (201) and side rollers (202). There are two side rollers (202), and the two side rollers (202) are located on both sides of the intermediate roller (201). The height of the side roller (202) closer to the intermediate roller (201) is lower than the height of the side roller (201) farther away from the intermediate roller (201).

4. The protective device for a mining belt conveyor as described in claim 1, characterized in that, The top and bottom of the conveying frame (1) are respectively provided with two guide rollers (3).

5. The protective device for a mining belt conveyor as described in claim 1, characterized in that, The pull-wire switch (4) is located at the lower end of the conveying frame (1) and is connected to the power supply.

6. The protective device for a mining belt conveyor as described in claim 1, characterized in that, The pull switch (4) has a connecting shaft (401) inside, and a vertical groove (402) is opened in the connecting shaft (401), through which the pull rope (5) passes.

7. The protective device for a mining belt conveyor as described in claim 1, characterized in that, The fastening mechanism includes an inner pressure plate (602), a fastening screw (604), a nut, and an elastic washer (605). The inner pressure plate (602) has an arc-shaped part inside. The fastening screw (604) passes through two inner pressure plates (602). The two ends of the fastening screw (604) are respectively connected to two nuts by threads. The elastic washer (605) is located between the nut and the inner pressure plate (602).

8. The protective device for a mining belt conveyor as described in claim 7, characterized in that, There are two inner pressure plates (602), and the two inner pressure plates (602) are located on both sides of the outer sealing sleeve (601).

9. The protective device for a mining belt conveyor as described in claim 8, characterized in that, The inner ring of the outer sealing sleeve (601) is provided with two grooves, and two inner pressure plates (602) press against the two grooves respectively.

10. The protective device for a mining belt conveyor as described in claim 9, characterized in that, The sealing mechanism (6) also includes a wear-resistant sleeve (607) and an mounting sleeve (608). The wear-resistant sleeve (607) is inserted into the mounting sleeve (608), and the pull rope (5) passes through the wear-resistant sleeve (607).

Images