Hydraulic supporting structure for supporting coal mine tunnel

Abstract

The hydraulic supporting structure for supporting the coal mine roadway comprises a base, an upper guard beam, a top beam, a front beam and a telescopic stand column, an expanding and supporting mechanism is arranged on the side wall of the top beam, a containing chamber is arranged on the side wall of the top beam, the expanding and supporting mechanism is installed in the containing chamber, and the expanding and supporting mechanism comprises an expanding air bag, an anti-explosion air pump and a protective cover. The expansion air bag is provided with an air inlet and an exhaust valve, the anti-explosion air pump is in through connection with the air inlet of the expansion air bag, the protective cover is installed on the outer side top beam of the storage chamber and rotationally connected through a hinge, the expansion air bag is of a rectangular structure, and the side wall of the expansion air bag is fixed to the inner wall of the storage chamber. The hydraulic support has the advantages of being high in protection performance and portability, and the problem that in the prior art, due to the fact that the protection range of a hydraulic support is small, small gravels easily fall on the periphery of the support, and the working efficiency of workers and equipment is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, in particular to a hydraulic support structure for supporting coal mine roadways. Background Art

[0002] With the continuous exploitation of coal resources, the safe support of coal mine roadways has become an important link in mining engineering. In the prior art, most coal mine roadways are supported by hydraulic supports, including a base, a side protection beam, a top beam, a front beam and telescopic columns. The telescopic columns push the side protection beam, the top beam and the front beam open, so as to fit with the inner wall of the roadway and play a supporting role for the roadway.

[0003] However, some existing hydraulic support structures often focus on the strengthening of support in a single direction, and the overall protection ability for the top and both sides of the roadway is insufficient. As the mining goes deeper, small gravels occasionally fall from the top of the roadway. Especially at the contact points between the hydraulic support and the mine tunnel, slight friction frequently occurs, making it easier for the gravels to fall, which affects the passage of personnel and equipment. Moreover, the humidity in the mine tunnel is high, and condensate is likely to appear on the top. The continuously dripping condensate affects the mining operations of employees and equipment. Therefore, a hydraulic support structure for supporting coal mine roadways is needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hydraulic support structure for supporting coal mine roadways, which has the advantages of high protection performance and portability, and solves the problem that the protection range of the hydraulic support in the prior art is small, resulting in small gravels being easily dropped around the hydraulic support and affecting the operation efficiency of employees and equipment.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A hydraulic support structure for supporting coal mine roadways, including a base, a side protection beam, a top beam, a front beam and telescopic columns, wherein an expansion mechanism is arranged on the side wall of the top beam;

[0006] A storage chamber is arranged on the side wall of the top beam, the expansion mechanism is installed in the storage chamber, the expansion mechanism includes an expansion airbag, an explosion-proof air pump and a protective cover. An air inlet and an exhaust valve are arranged on the expansion airbag, the explosion-proof air pump is connected to the air inlet of the expansion airbag in a through manner, and the protective cover is rotatably connected to the outer side of the storage chamber on the top beam through a hinge.

[0007] As a preferred hydraulic support structure for supporting coal mine roadways of the utility model, the expansion airbag is of a rectangular structure, and the side wall of the expansion airbag is fixed on the inner wall of the storage chamber.

[0008] Preferably, as a hydraulic support structure for coal mine roadway support of the present utility model, a one-way valve and a pressure sensor are provided at the air inlet, a controller is provided in the storage chamber, an explosion-proof protective cover is provided outside the controller, and the controller is electrically connected to the pressure sensor and the explosion-proof air pump.

[0009] Preferably, as a hydraulic support structure for coal mine roadway support of the present utility model, a support steel belt is provided inside the side wall of the expansion airbag, and the cross section of the steel belt is an arc-shaped structure.

[0010] Preferably, as a hydraulic support structure for coal mine roadway support of the present utility model, a wear-resistant layer is provided on the surface of the expansion airbag, and the wear-resistant layer is made of polytetrafluoroethylene fiber.

[0011] Preferably, as a hydraulic support structure for coal mine roadway support of the present utility model, a magnet is provided on the inner end surface of the protective cover, and the protective cover is adsorbed on the side end surface of the roof beam by the magnet.

[0012] Preferably, as a hydraulic support structure for coal mine roadway support of the present utility model, a protective strip is provided at the bottom of the outer end surface of the protective cover, and the protective strip is made of rubber material.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By arranging an expansion support mechanism inside the side wall of the roof beam of the present utility model, the expansion airbag is used to expand the dynamic protection area. When the airbag is inflated, its rectangular structure can expand away from the storage chamber on the basis of the fixed end, effectively increasing the support coverage area of the top and both sides of the roadway, thereby improving the safety protection ability of the working face and reducing the impact of falling crushed stones or dripping water droplets from the mine roof on the staff and equipment.

[0015] 2. By arranging a storage chamber on the side wall of the roof beam of the present utility model, the expansion support mechanism is ingeniously integrated therein, realizing a compact design of the support structure. This design enables the components such as the expansion airbag to be completely retracted into the storage chamber when the support structure is not in use, greatly reducing the occupied space and facilitating transportation and storage. The protective cover adopts a magnetic adsorption design and is usually adsorbed on the outside of the storage chamber, which not only protects the internal components from external damage but also can be automatically pushed open when the airbag needs to be inflated and expanded, without manual intervention, greatly improving the operation convenience and efficiency. The support steel belt with an arc-shaped cross section is embedded inside the expansion airbag, which not only enhances the structural strength and stability of the airbag but also facilitates the later retraction and storage of the expansion airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a side view of the present utility model;

[0018] Figure 3 of the present utility model Figure 2 sectional view A-A in;

[0019] Figure 4 of the present utility model Figure 2 enlarged view at B in;

[0020] Figure 5 of the present utility model Figure 3 enlarged view at C in;

[0021] Figure 6 is a schematic diagram of the sectional structure of the expansion airbag of the present utility model.

[0022] In the figure: 1, base; 2, side protection beam; 3, top beam; 301, storage chamber; 302, protective cover; 3021, magnet; 3022, protective strip; 4, front beam; 5, telescopic column; 6, expansion mechanism; 601, explosion-proof air pump; 602, expansion airbag; 6021, exhaust valve; 6022, air inlet; 6023, wear-resistant layer; 6024, steel strip; 603, air pressure sensor; 604, one-way valve; 605, controller. Specific embodiments

[0023] Please refer to Figures 1-6 , a hydraulic support structure for supporting coal mine roadways, including a base 1, a side protection beam 2, a top beam 3, a front beam 4 and a telescopic column 5, and an expansion mechanism 6 is provided on the side wall of the top beam 3;

[0024] A storage chamber 301 is provided on the side wall of the top beam 3, the expansion mechanism 6 is installed in the storage chamber 301, the expansion mechanism 6 includes an expansion airbag 602, an explosion-proof air pump 601 and a protective cover 302, an air inlet 6022 and an exhaust valve 6021 are provided on the expansion airbag 602, and the explosion-proof air pump 601 is connected to the air inlet 6022 of the expansion airbag 602 in a through manner, and the protective cover 302 is installed on the outer side of the storage chamber 301 and is rotatably connected to the top beam 3 through a hinge.

[0025] Furthermore, the expansion airbag 602 is of a rectangular structure, and the side wall of the expansion airbag 602 is fixed to the inner wall of the storage chamber 301.

[0026] When the expansion airbag 602 is inflated, since the end of the expansion airbag 602 is fixed to the inner wall of the storage chamber 301, all the expansion airbag 602 unfolds towards the end away from the storage chamber 301, increasing the protection area and preventing gravel and condensed water droplets from falling.

[0027] Furthermore, a one-way valve 604 and a pressure sensor 603 are provided at the air inlet 6022. A controller 605 is arranged in the storage chamber 301. An explosion-proof protective cover is arranged outside the controller 605. The controller 605 is electrically connected to the pressure sensor 603 and the explosion-proof air pump 601.

[0028] The pressure of the expansion airbag 602 is detected by the pressure sensor 603, and the pressure data is transmitted to the controller 605. After reaching the set threshold value of the controller 605, the controller 605 closes the explosion-proof air pump 601. The design of the one-way valve 604 prevents the expansion airbag 602 from discharging pressure through the air inlet 6022.

[0029] Furthermore, a support steel belt 6024 is arranged inside the side wall of the expansion airbag 602. The cross-section of the steel belt 6024 is a circular arc structure.

[0030] The support strength of the expansion airbag 602 is enhanced by the steel belt 6024, thereby improving the stability of the support frame. The steel belt 6024 with an arc-shaped cross-section can enhance its upward support force. Moreover, after the gas in the expansion airbag 602 is released, the steel belt 6024 has a tendency to roll up upward, thus facilitating the driving of the airbag to be rolled up and stored in the storage chamber 301.

[0031] Furthermore, a wear-resistant layer 6023 is arranged on the surface of the expansion airbag 602. The wear-resistant layer 6023 is made of polytetrafluoroethylene fiber.

[0032] The wear-resistant performance of the expansion airbag 602 is enhanced by the wear-resistant layer 6023, thereby preventing the airbag from being scratched or punctured by sharp stones on the inner wall of the mine tunnel and improving the service life of the airbag.

[0033] Furthermore, a magnet 3021 is arranged on the inner end surface of the protective cover 302. The protective cover 302 is adsorbed on the side end surface of the roof beam 3 through the magnet 3021.

[0034] The magnetically attracted protective cover 302 does not need to be manually opened. When the expansion airbag 602 is inflated, it can be directly pushed open, improving the operation convenience. Moreover, it can usually block the outside of the storage chamber 301 to prevent the expansion airbag 602 from scattering.

[0035] Furthermore, a protective strip 3022 is arranged at the bottom of the outer end surface of the protective cover 302. The protective strip 3022 is made of rubber material.

[0036] The impact on the inner wall of the mine tunnel when the protective cover 302 is unfolded is reduced by the protective strip 3022, avoiding deformation and damage of the protective cover 302.

[0037] When this hydraulic support equipment is in use, confirm that the working face conditions are suitable for installing the hydraulic support structure, remove the floating coal and sundries in the installation area, ensure that the placement area of the base 1 is flat and stable, move the hydraulic support structure to the predetermined installation position, ensure that each component is aligned with the corresponding connection point, fix the base 1 at the bottom of the roadway, and expand the equipment through the telescopic column 5 and the internal hydraulic mechanism, so that the roof beam 3 and the front beam 4 support the inside of the roadway. The above belongs to the prior art. After the equipment is stably supported, start the explosion-proof air pump 601 and start inflating the expansion airbag 602. At this time, the air pressure sensor 603 monitors the internal pressure of the airbag and transmits the data to the controller 605 in real time. Observe whether the airbag unfolds evenly to ensure that there is no sign of leakage. When the airbag pressure reaches the preset threshold of the controller 605, the controller 605 should automatically cut off the power supply of the air pump and stop inflating. The airbag can effectively prevent gravel and condensate from falling.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic support structure for supporting a coal mine tunnel, comprising a base (1), a supporting beam (2), a top beam (3), a front beam (4) and a telescopic column (5), characterized in that: The side wall of the top beam (3) is provided with an expansion and support mechanism (6); The side wall of the top beam (3) is provided with a storage chamber (301), the expansion mechanism (6) is installed in the storage chamber (301), the expansion mechanism (6) comprises an expansion airbag (602), an explosion-proof air pump (601) and a protective cover (302), the expansion airbag (602) is provided with an air inlet (6022) and an exhaust valve (6021), the explosion-proof air pump (601) is connected to the air inlet (6022) of the expansion airbag (602), and the protective cover (302) is installed on the outer side of the storage chamber (301) and is rotatably connected via a hinge.

2. A hydraulic support structure for supporting a coal mine tunnel as claimed in claim 1, characterized in that: The expansion airbag (602) is a rectangular structure, and the side wall of the expansion airbag (602) is fixed to the inner wall of the storage chamber (301).

3. A hydraulic support structure for supporting a coal mine tunnel as claimed in claim 1, characterized in that: The air inlet (6022) is provided with a one-way valve (604) and an air pressure sensor (603), and the storage chamber (301) is provided with a controller (605), and the controller (605) is electrically connected to the air pressure sensor (603) and the explosion-proof air pump (601).

4. A hydraulic support structure for supporting a coal mine tunnel as claimed in claim 1, characterized in that: A supporting steel belt (6024) is arranged inside the side wall of the expansion airbag (602), and the cross section of the steel belt (6024) is an arc-shaped structure.

5. A hydraulic support structure for supporting a coal mine tunnel as claimed in claim 1, characterized in that: The surface of the expansion balloon (602) is provided with a wear-resistant layer (6023), and the wear-resistant layer (6023) is made of polytetrafluoroethylene fiber.

6. A hydraulic support structure for supporting a coal mine tunnel as claimed in claim 1, characterized in that: The inner end surface of the protective cover (302) is provided with a magnet (3021), and the protective cover (302) is adsorbed on the side end surface of the top beam (3) through the magnet (3021).

7. A hydraulic support structure for supporting a coal mine tunnel as claimed in claim 1, characterized in that: A protection strip (3022) is provided at the bottom of the outer end surface of the protection cover (302), and the protection strip (3022) is made of rubber material.

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