A conveyor device for coal mining

Abstract

The utility model discloses a conveying device of coal mining, include: scraper body, the inside symmetry of scraper body is provided with conveying chain, one side wall of conveying chain has the connecting plate, first scraper is located on the connecting plate, and the lower surface of first scraper has the locating ring block of in -side extension connecting plate, the connecting bolt is rotatoryly set up in the inside of locating ring block, second scraper is located on the lower surface of connecting plate, and the utility model discloses through being provided with first scraper, second scraper, locating ring block and connecting bolt, and this device can replace the lower end of wear bigger scraper alone, can reduce maintenance replacement cost through split -type design, and this device is convenient for first scraper and second scraper to dismouting.

Description

Technical Field

[0001] This utility model specifically relates to a conveying device for coal mining. Background Technology

[0002] Scraper conveyors are indispensable key equipment in coal mining, especially underground longwall mining. During operation, the coal cut by the mining machine falls directly onto the chute of the scraper conveyor. Through a circulating scraper chain, the coal is continuously transported along the length of the working face from the tail to the head of the conveyor. At the head, the coal is unloaded onto a transfer conveyor or belt conveyor and then enters the main transportation system to be transported out of the mine.

[0003] In existing scraper conveyors, the lower surface of the scraper contacts the support surface inside the machine body to scrape the coal on the support surface and reduce coal leakage. However, over time, this leads to significant wear on the lower end of the scraper. After wear, the entire scraper needs to be removed and replaced with a new one. Since the upper surface of the scraper wears less, replacing the entire scraper is wasteful and affects maintenance costs. Therefore, we propose a conveying device for coal mining. Utility Model Content

[0004] The purpose of this utility model is to provide a conveying device for coal mining to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a conveying device for coal mining, comprising:

[0006] The scraper conveyor body has conveyor chains symmetrically arranged on its inner side, and one side wall of the conveyor chain has a connecting plate.

[0007] A first scraper is disposed on the connecting plate, and the lower surface of the first scraper has a positioning ring block extending into the inner side of the connecting plate;

[0008] The connecting bolt is rotatably positioned inside the positioning ring block;

[0009] The second scraper is disposed on the lower surface of the connecting plate, and the inner side of the second scraper is provided with a threaded groove that mates with the connecting bolt.

[0010] Preferably, the outer contour of the positioning ring block is hexagonal.

[0011] Preferably, the inner side of the connecting plate has a through hole that mates with the positioning ring block.

[0012] Preferably, both the first scraper and the second scraper are "L"-shaped, and the height of the second scraper extending toward the bottom surface of the scraper body is less than the height of the first scraper extending toward the top surface of the scraper body.

[0013] Preferably, the positioning ring block has an "L" shaped cross-section, and the positioning ring block and the first scraper are integrally formed.

[0014] Preferably, the connecting plate is connected to the pin end of the conveyor chain via a support plate.

[0015] Preferably, the connecting bolt has a "T" shaped cross-section, and the upper surface of the connecting bolt has an internal hexagonal groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model, by incorporating a first scraper, a second scraper, a positioning ring block, and connecting bolts, avoids the problem of traditional one-piece scraper structures where the lower surface of the scraper suffers significant wear against the machine support surface during conveying, requiring the replacement of the entire scraper during maintenance. This device allows for the replacement of the lower end of the more worn scraper separately. The split design reduces maintenance and replacement costs. Furthermore, the first and second scrapers are easy to assemble and disassemble, facilitating maintenance. Compared to existing structures, it does not require an increase in the number of connecting plates, resulting in lower improvement costs and easier layout and use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the scraper conveyor body of this utility model;

[0020] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the first scraper and the second scraper of this utility model;

[0022] Figure 5 This is a schematic diagram of the positioning ring block structure of this utility model.

[0023] In the diagram: 1. Scraper body; 2. Conveyor chain; 3. Connecting plate; 31. Through hole; 4. First scraper; 5. Second scraper; 61. Positioning ring block; 62. Connecting bolt. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-5 This utility model provides a technical solution: a conveying device for coal mining, comprising:

[0026] The scraper body 1 has conveyor chains 2 symmetrically arranged on the inner side of the scraper body 1, and a connecting plate 3 is provided on one side wall of the conveyor chain 2.

[0027] The first scraper 4 is disposed on the connecting plate 3, and the lower surface of the first scraper 4 has a positioning ring block 61 that extends into the inner side of the connecting plate 3;

[0028] This facilitates the connection of both ends of the first scraper 4 with the connecting plates 3 on the two conveyor chains 2;

[0029] The connecting bolt 62 is rotatably positioned inside the positioning ring block 61;

[0030] The second scraper 5 is disposed on the lower surface of the connecting plate 3, and the inner side of the second scraper 5 is provided with a threaded groove that mates with the connecting bolt 62;

[0031] The first scraper 4 and the second scraper 5 can be fixed to the connecting plate 3 together with a single connecting bolt 62. When the first scraper 4 wears out too much, it can be disassembled and replaced separately, avoiding the need to replace and maintain the entire scraper fixed to the connecting plate 3, which would result in high maintenance costs.

[0032] In this embodiment, preferably, the outer contour of the positioning ring block 61 is hexagonal;

[0033] To better prevent the first scraper 4 or the second scraper 5 from twisting with the connecting plate 3, and to prevent the torsional force from being transmitted to the connecting bolt 62 and causing it to rotate and loosen, a one-way limiting spring can be provided on the inner wall of the positioning ring block 61 to better prevent the connecting bolt 62 from loosening and falling off from the inside of the positioning ring block 61.

[0034] In this embodiment, preferably, the inner side of the connecting plate 3 is provided with a through hole 31 that cooperates with the positioning ring block 61;

[0035] This facilitates the quick engagement of the positioning ring block 61 with the connecting plate 3.

[0036] In this embodiment, preferably, both the first scraper 4 and the second scraper 5 are "L" shaped, and the height of the second scraper 5 extending toward the bottom surface of the scraper machine body 1 is less than the height of the first scraper 4 extending toward the top surface of the scraper machine body 1.

[0037] This makes it easier to reduce the volume of the first scraper 4, thereby reducing maintenance costs during maintenance and replacement.

[0038] In this embodiment, preferably, the positioning ring block 61 has an "L" shaped cross-section, and the positioning ring block 61 and the first scraper 4 are integrally formed.

[0039] This facilitates a stronger connection.

[0040] In this embodiment, preferably, the connecting plate 3 is connected to the pin end of the conveyor chain 2 via a support plate.

[0041] In this embodiment, preferably, the cross-section of the connecting bolt 62 is "T" shaped, and the upper surface of the connecting bolt 62 is provided with an internal hexagonal groove.

[0042] The working principle and usage process of this utility model are as follows: In use, the second scraper 5 is placed on the lower surface of the connecting plate 3, and the first scraper 4 is placed on the connecting plate 3. At this time, the positioning ring block 61 passes through the through hole 31 and contacts the second scraper 5, so that the connecting bolt 62 passes through the inner side of the positioning ring block 61 and engages with the second scraper 5 through the threaded part, thereby fixing the first scraper 4 and the second scraper 5 to the connecting plate 3. When the drive mechanism drives the conveying chain 2 to move, the conveying chain 2 drives the first scraper 4 and the second scraper 5 to move simultaneously through the connecting plate 3. The first scraper 4 and the second scraper 5 push and convey the coal material inside the scraper body 1. After the first scraper 4 wears on the inner support surface of the scraper body 1, the first scraper 4 can be disassembled and maintained separately, making it easy to use.

[0043] 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 conveying device for coal mining, characterized in that, include: The scraper body (1) has conveyor chains (2) symmetrically arranged on the inner side of the scraper body (1), and one side wall of the conveyor chain (2) has a connecting plate (3). The first scraper (4) is disposed on the connecting plate (3), and the lower surface of the first scraper (4) has a positioning ring block (61) extending into the inner side of the connecting plate (3). The connecting bolt (62) is rotatably positioned inside the positioning ring block (61); The second scraper (5) is disposed on the lower surface of the connecting plate (3), and the inner side of the second scraper (5) is provided with a threaded groove that cooperates with the connecting bolt (62).

2. The conveying device for coal mining according to claim 1, characterized in that: The outer contour of the positioning ring block (61) is hexagonal.

3. The conveying device for coal mining according to claim 1, characterized in that: The inner side of the connecting plate (3) is provided with a through hole (31) that cooperates with the positioning ring block (61).

4. A conveying device for coal mining according to claim 1, characterized in that: Both the first scraper (4) and the second scraper (5) are "L" shaped, and the height of the second scraper (5) extending toward the bottom surface of the scraper body (1) is less than the height of the first scraper (4) extending toward the top surface of the scraper body (1).

5. A conveying device for coal mining according to claim 1, characterized in that: The positioning ring block (61) has an "L" shaped cross section, and the positioning ring block (61) and the first scraper (4) are integrally formed.

6. A conveying device for coal mining according to claim 1, characterized in that: The connecting plate (3) is connected to the pin end of the conveyor chain (2) via a support plate.

7. A conveying device for coal mining according to claim 1, characterized in that: The connecting bolt (62) has a "T" shaped cross section, and the upper surface of the connecting bolt (62) is provided with an internal hexagonal groove.

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