Underground coal mine roadway supporting device

Abstract

The utility model discloses a coal mine underground roadway supporting device, and belongs to the technical field of underground supporting devices. A coal mine underground roadway supporting device comprises a supporting plate installed on a support and further comprises a plurality of sets of cylinder bodies fixedly connected to the supporting plate at equal intervals. The piston rod is connected in the cylinder body in a sliding manner; the barbed nail is fixedly connected to the piston rod; the connecting pipe is connected to the supporting plate, the connecting pipe is used for injecting liquid into the cylinder body, and a valve is arranged on the connecting pipe; through the barbed nails sliding in the cylinder body, the barbed nails pierce into surrounding rocks in a hydraulic mode, so that the supporting effect is improved, the slippage situation is reduced, meanwhile, if a concrete slurry injection mode is adopted, the strength of the supporting plate can be improved, and long-term use is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to underground support device technical field especially relates to a coal mine underground roadway support device. BACKGROUND

[0002] The basic purpose of supporting the roadway is to alleviate and reduce the movement of surrounding rock, so that the cross section of the roadway does not become too small, and to prevent the surrounding rock from falling apart and being damaged.

[0003] In the prior art, the support plate is used for support, which is one of the most commonly used support methods, and has good support effect.

[0004] The existing support plate is directly attached to the top of the roadway during use, but it is prone to slipping during actual use, which cannot effectively support the surrounding rock at the top of the roadway, and has certain disadvantages.

[0005] Therefore, a coal mine underground roadway support device is provided to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses a kind of coal mine underground roadway support devices to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model adopts the following technical scheme:

[0008] A coal mine underground roadway support device, comprising a support plate mounted on a support, further comprising:

[0009] A plurality of cylinder bodies are fixedly connected to the support plate at equal intervals.

[0010] A piston rod is slidingly connected in the cylinder body.

[0011] A spike is fixedly connected to the piston rod.

[0012] A connector is connected to the support plate, and the connector is used to inject liquid into the cylinder body.

[0013] To adjust the height of the support, preferably, the support is two groups, one group of the support is slidingly connected with a slide rod, and the other group of the support is threadedly connected with a threaded rod, and the slide rod and the threaded rod are connected to the support plate at their ends away from the support.

[0014] Preferably, the threaded rod is fixedly connected with a rotating handle.

[0015] In order to facilitate secondary locking and fixing, preferably, the support is internally connected with a sliding rod, the sliding rod is fixedly connected with a screw rod, the screw rod is slidably connected in the hollow, and the screw rod is threadedly connected with a locking nut.

[0016] In order to improve the strength, preferably, the support plate is fixedly connected with a reinforcing rib, and the support plate is provided with an inner tube for connecting the cylinder body and the connecting pipe.

[0017] Preferably, the support is fixedly connected with a bottom plate.

[0018] Compared with the prior art, the coal mine underground roadway supporting device has the following beneficial effects:

[0019] The spike slidably arranged in the cylinder body is used to penetrate into the surrounding rock through the hydraulic mode, thereby improving the supporting effect and reducing the sliding condition, and if the concrete slurry injection mode is used, the strength of the support plate can be improved, and the support plate is convenient for long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Structure diagram of the coal mine underground roadway supporting device Figure 1

[0021] Figure 2 Structure diagram of the coal mine underground roadway supporting device Figure 2

[0022] Figure 3 Structure diagram of the coal mine underground roadway supporting device Figure 3

[0023] Figure 4 Structure diagram of the coal mine underground roadway supporting device Figure 3 A part of the coal mine underground roadway supporting device

[0024] Figure 5 Structure diagram of the coal mine underground roadway supporting device Figure 3 B part of the coal mine underground roadway supporting device

[0025] Figure 6 Structure diagram of the coal mine underground roadway supporting device Figure 3 C part of the coal mine underground roadway supporting device

[0026] ​​​In the figure: 1, support plate; 101, reinforcing rib; 102, inner tube; 201, support; 2011, air port; 202, threaded rod; 203, rotating handle; 204, sliding rod; 205, screw rod; 206, locking nut; 207, bottom plate; 301, cylinder body; 302, piston rod; 303, spike; 4, connecting pipe. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0028] Embodiment 1

[0029] With reference to Figures 1-6 A coal mine underground roadway supporting device, comprising a support plate 1 installed on a support 201, further comprising: a plurality of cylinder bodies 301 fixedly connected on the support plate 1 at equal intervals; a piston rod 302 slidingly connected in the cylinder body 301; a spike 303 fixedly connected on the piston rod 302; and a connecting pipe 4 connected on the support plate 1, the connecting pipe 4 being used for injecting liquid into the cylinder body 301, and the connecting pipe 4 being provided with a valve.

[0030] When the device is used, the support plate 1 is installed through the support 201, then the support plate 1 is contacted with the top of the roadway and is abutted against the top of the roadway, then water is pumped through the water pump and is connected with the connecting pipe 4 with the valve being opened, at this time, along with the entry of the liquid, the liquid gradually enters the cylinder body 301, along with the change of the hydraulic pressure, the piston rod 302 is gradually extruded, then the spike 303 is pierced into the top of the roadway, the surrounding rock of the top of the roadway is fixed, and the stability of the connection between the support plate 1 and the roadway is increased, finally the water pump and the valve in the connecting pipe 4 are closed.

[0031] Embodiment 2

[0032] With reference to Figures 1-6 A coal mine underground roadway supporting device, which is basically the same as embodiment 1, and further comprises: the support 201 is two groups, one group of the support 201 is slidingly connected with a sliding rod 204, and the other group of the support 201 is threadedly connected with a threaded rod 202, the sliding rod 204 and the threaded rod 202 are connected with the support plate 1 at the ends away from the support 201, the threaded rod 202 is fixedly connected with a rotating handle 203, the support 201 slidingly connected with the sliding rod 204 is provided with an air port 2011, the sliding rod 204 is fixedly connected with a screw rod 205, the screw rod 205 is slidingly connected in the air port 2011, the screw rod 205 is threadedly connected with a locking nut 206, and the support 201 is fixedly connected with a bottom plate 207.

[0033] In the installation of support plate 1, the rotating handle 203 can be used, and then the threaded rod 202 is moved in the bracket 201, and the height of the support plate 1 is adjusted until the top of the support plate 1 abuts against the roadway, and then the locking nut 206 on the screw rod 205 is rotated to fix the sliding rod 204, and finally the liquid such as mud can be injected by the water pump to complete the support.

[0034] Embodiment 3:

[0035] Referring to Figures 1-6 The coal mine underground roadway support device is basically the same as that in Embodiment 1, and further, the support plate 1 is fixedly connected with the reinforcing rib 101, and the inner tube 102 is arranged in the support plate 1, and the inner tube 102 is used to connect the cylinder body 301 and the connecting pipe 4.

[0036] The arrangement of the inner tube 102 facilitates the liquid to enter the cylinder body 301, and if the injected liquid is replaced by the cement slurry, the strength of the support plate 1 can be increased by this way, and the support time can be increased when special conditions are encountered, and time support for underground evacuation personnel can be provided.

[0037] The utility model discloses a slide nail 303 in the cylinder body 301, and the slide nail 303 is stabbed into the surrounding rock through the hydraulic mode, and the support effect is improved, the sliding condition is reduced, and if the concrete slurry injection mode is used, the strength of the support plate 1 can be improved, and the long-term use is facilitated.

[0038] The above is only the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, and any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A coal mine underground roadway supporting device, comprising a supporting plate (1) installed on a support (201), characterized in that, Also include: Multiple sets of cylinder (301), are equidistant fixedly connected to the support plate (1); Piston rod (302), slidingly connected in the cylinder (301); Stab (303), fixedly connected to the piston rod (302); The pipe (4) is connected to the support plate (1), the pipe (4) is used for injecting liquid into the cylinder (301), and the pipe (4) is provided with a valve.

2. A coal mine underground roadway supporting device according to claim 1, characterized in that, The support (201) is two groups, one group of the support (201) is slidably connected with a slide bar (204), and the other group of the support (201) is threadedly connected with a threaded rod (202), and the slide bar (204) and the threaded rod (202) are connected with the support plate (1) at the end away from the support (201).

3. A coal mine roadway support device according to claim 2, characterised in that, The threaded rod (202) is fixedly connected with a rotating handle (203).

4. The coal mine underground roadway supporting device according to claim 2, characterized in that, The support (201) slidably connected with the slide bar (204) is provided with an air opening (2011), the slide bar (204) is fixedly connected with a lead screw (205), the lead screw (205) is slidably connected in the air opening (2011), and the lead screw (205) is threadedly connected with a locking nut (206).

5. The coal mine roadway support device according to claim 1, characterized in that, The support plate (1) is fixedly connected with a reinforcing rib (101), and the support plate (1) is provided with an inner tube (102), the inner tube (102) is used for connecting the cylinder (301) and the pipe (4).

6. The coal mine roadway support device according to claim 1, characterized in that, The support (201) is fixedly connected with a bottom plate (207).

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