A coal mine underground mining safety supporting device

Abstract

The utility model discloses a kind of coal mine underground mining safety supporting devices, it is related to safety supporting technical field, including supporting sleeve, the inside upper end of supporting sleeve is slidably connected with inner tube, the inside of supporting sleeve and at the lower end of the inner tube is equipped with hydraulic jack, the inside of inner tube is equipped with support screw rod, the upper end of supporting sleeve is equipped with end plate, the upper end of support screw rod is protruding to the upper outer portion of supporting sleeve by penetrating the end plate, the upper end of support screw rod is equipped with limiting nut by screw connection, the limiting nut is on the upper surface of the end plate, the upper end of support screw rod is equipped with support tip, the lower end of supporting sleeve is equipped with fixed base, design is adjusted by hydraulic jack Safety supporting device, height adjustment is carried out by hydraulic jack to drive safety supporting device, can adapt to the different size of roadway to carry out safety supporting, improve the versatility of safety supporting.

Description

Technical Field

[0001] This utility model relates to the field of safety support technology, specifically to a safety support device for underground coal mining. Background Technology

[0002] Underground coal mining requires strict adherence to safety regulations and technical standards. Miners enter tunnels hundreds of meters underground via vertical or inclined shafts, operating heavy equipment such as coal mining machines and hydraulic supports in narrow, damp environments to cut, crush, and transport coal seams. Underground operations face various risks, including gas outbursts, roof collapses, and water inrushes. Therefore, safety devices such as gas monitors, ventilation systems, and emergency escape facilities are essential. Traditional safety support systems are mostly fixed structures, only suitable for tunnels of fixed dimensions, resulting in poor versatility. Utility Model Content

[0003] The purpose of this utility model is to provide a safety support device for underground coal mining, so as to solve the problem mentioned in the background art that traditional safety support devices are mostly fixed structures, which can only provide safety support for roadways of fixed size and have poor versatility.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a safety support device for underground coal mining, comprising a support sleeve, an inner cylinder slidably connected to the upper end of the support sleeve, a hydraulic jack provided inside the support sleeve and at the lower end of the inner cylinder, a support screw provided inside the inner cylinder, an end plate provided at the upper end of the support sleeve, the upper end of the support screw extending through the end plate to the upper outside of the support sleeve, a limit nut connected to the support screw by a thread, the limit nut abutting against the upper surface of the end plate, a support end provided at the upper end of the support screw, and a fixing seat provided at the lower end of the support sleeve.

[0005] Preferably, a reinforcing seat is provided between the upper surface of the fixed seat and the lower surface of the support sleeve, bolt holes are provided through the fixed seat, a support pad is provided at the middle of the upper surface of the fixed seat and at the lower end of the inside of the support sleeve, and the lower end of the hydraulic jack abuts against the support pad.

[0006] Preferably, the hydraulic jack has a split structure, with the two parts of the hydraulic jack respectively located on the inner and outer sides of the support sleeve, and the two parts of the hydraulic jack are connected by a pipe.

[0007] Preferably, the inner cylinder is provided with inner end plates at both the upper and lower ends, and the support screw is fixedly connected to the two inner end plates by welding.

[0008] Preferably, the height of the support pad is the same as the height of the reinforcing seat.

[0009] Compared with the prior art, the beneficial effects of this utility model are: replacing the traditional fixed structure safety support device, the design uses a safety support device that is adjusted by a hydraulic jack. The height of the safety support device can be adjusted by the hydraulic jack, which can be adapted to roadways of different sizes for safety support, thus improving the versatility of the safety support. Attached Figure Description

[0010] Figure 1 This is an isometric sectional view of the main structure of this utility model; Figure 2 This is an isometric view of the main structure of this utility model; Figure 3 This is a front sectional view of the main structure of this utility model; Figure 4 This is a front view schematic diagram of the main structure of this utility model; Figure 5 This is a top view of the main structure of this utility model.

[0011] In the diagram: 1-support sleeve, 2-inner cylinder, 3-hydraulic jack, 4-support screw, 5-end plate, 6-limit nut, 7-support end, 8-fixed seat, 9-reinforcing seat, 10-bolt hole, 11-support pad, 12-inner end plate. Detailed Implementation

[0012] 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.

[0013] Please see Figure 1-5 This utility model provides a safety support device for underground coal mining, including a support sleeve 1. An inner cylinder 2 is slidably connected to the upper end of the support sleeve 1. A hydraulic jack 3 is provided inside the support sleeve 1 and at the lower end of the inner cylinder 2. A support screw 4 is provided inside the inner cylinder 2. An end plate 5 is provided at the upper end of the support sleeve 1. The upper end of the support screw 4 extends through the end plate 5 to the outside of the support sleeve 1. A limit nut 6 is threadedly connected to the support screw 4. The limit nut 6 abuts against the upper surface of the end plate 5. A support end head 7 is provided at the upper end of the support screw 4. A fixing seat 8 is provided at the lower end of the support sleeve 1.

[0014] In use, place the entire safety support device at the location requiring support, ensuring that the fixed base 8 is firmly connected to the lower connecting surface. The hydraulic jack 3 drives the inner cylinder 2 to move up and down along the inside of the support sleeve 1. The support screw 4 is located inside the inner cylinder 2, which causes the support screw 4 to drive the support end 7 to move up and down, thereby supporting the location requiring support. A limit nut 6 is threaded onto the support screw 4. By tightening the limit nut 6, the limit nut 6 abuts against the end plate 5. The limit nut 6 and the end plate 5 share the weight borne by the hydraulic jack 3, ensuring the safety support capability while improving the adjustable range of the safety support device.

[0015] A reinforcing seat 9 is provided between the upper surface of the fixed seat 8 and the lower surface of the support sleeve 1. A bolt hole 10 is provided through the fixed seat 8. A support pad 11 is provided at the middle of the upper surface of the fixed seat 8 and at the lower end inside the support sleeve 1. The lower end of the hydraulic jack 3 abuts against the support pad 11. The connection strength between the fixed seat 8 and the support sleeve 1 is improved by setting the reinforcing seat 9. The fixed seat 8 is fixed in the installation position by bolts passing through the bolt hole 10. The support pad 11 is provided inside the support sleeve 1 to raise the position of the hydraulic jack 3 and avoid interference of the reinforcing seat 9 with the hydraulic jack 3.

[0016] The hydraulic jack 3 has a split structure, with its two parts respectively located on the inner and outer sides of the support sleeve 1. The two parts of the hydraulic jack 3 are connected by a pipe, which allows workers to adjust the height of the safety support device using the split-structure hydraulic jack 3.

[0017] The inner cylinder 2 is provided with inner end plates 12 at both the upper and lower ends. The support screw 4 is fixedly connected to the two inner end plates 12 by welding, thereby sealing both ends of the inner cylinder 2, improving the strength of the inner cylinder 2, and improving the connection strength between the support screw 4 and the inner cylinder 2.

[0018] The height of the support pad 11 is the same as the height of the reinforcing seat 9, leaving space for the operation of the hydraulic jack 3.

[0019] 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 safety support device for underground coal mining, characterized in that: The support sleeve (1) is slidably connected to an inner cylinder (2) at its upper end. A hydraulic jack (3) is provided inside the support sleeve (1) and at the lower end of the inner cylinder (2). A support screw (4) is provided inside the inner cylinder (2). An end plate (5) is provided at the upper end of the support sleeve (1). The upper end of the support screw (4) extends through the end plate (5) and out to the outside of the support sleeve (1). A limit nut (6) is threadedly connected to the support screw (4). The limit nut (6) abuts against the upper surface of the end plate (5). A support end (7) is provided at the upper end of the support screw (4). A fixing seat (8) is provided at the lower end of the support sleeve (1).

2. The safety support device for underground coal mining according to claim 1, characterized in that: A reinforcing seat (9) is provided between the upper surface of the fixed seat (8) and the lower surface of the support sleeve (1). A bolt hole (10) is provided through the fixed seat (8). A support pad (11) is provided at the middle position of the upper surface of the fixed seat (8) and at the lower end of the inside of the support sleeve (1). The lower end of the hydraulic jack (3) abuts against the support pad (11).

3. The underground mining safety support device according to claim 1, characterized in that: The hydraulic jack (3) is a split structure. The two parts of the hydraulic jack (3) are respectively set on the inner and outer sides of the support sleeve (1). The two parts of the hydraulic jack (3) are connected by a pipe.

4. The underground mining safety support device according to claim 1, characterized in that: The inner cylinder (2) is provided with inner end plates (12) at both the upper and lower ends, and the support screw (4) is fixedly connected to the two inner end plates (12) by welding.

5. A safety support device for underground coal mining according to claim 2, characterized in that: The height of the support pad (11) is the same as the height of the reinforcing seat (9).

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