Jack protection device for hydraulic support

Abstract

The utility model discloses a jack protection device for a hydraulic support, which comprises a hydraulic support body, the hydraulic support body comprises a base and a top plate, and jacks are arranged at the front part and the rear part between the opposite sides of the base and the top plate. According to the jack protection device for the hydraulic support, the two limiting rings are installed above and below the jack, the multiple sliding cylinders and the sliding rods are installed around the jack, a gauze cylinder is installed on the surfaces of the multiple sliding cylinders and the surfaces of the sliding rods, and the gauze cylinder is clamped through the first arc-shaped plate and the second arc-shaped plate; the first arc-shaped plate and the second arc-shaped plate are fixed through the limiting mechanism, the gauze cylinder can be well surrounded on the surface of the jack for protection, dust is effectively prevented from adhering to the surface of the jack, the gauze cylinder is supported through the sliding cylinder and the sliding rod, no redundant extrusion acting force exists, and the jack supporting effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic support, specifically is a hydraulic support jack protection device. BACKGROUND

[0002] Hydraulic support is the support equipment of fully mechanized coal face, its main role is to support the roof of the stope, maintains the safe operation space, pushes the mining equipment of working face, and the jack is one of the main support forces of the hydraulic support, but due to the damp and dusty environment inside the mine, the outer surface of the jack piston is easy to be polluted and corroded, at present, cotton cloth is directly wrapped on the outer surface of the jack piston, and then the cable tie is used to tighten, but every time the hydraulic support needs to be folded and changed position to support or check the piston rod, the cotton cloth needs to be disassembled and then bound, which is very troublesome and time-consuming, and the existing patent document has improved this.

[0003] In the Chinese patent CN218265985U, specifically a coal mine hydraulic support jack protection device, including base and top plate, the base and top plate between setting up column jack, the column jack includes oil cylinder, the upper movable joint of oil cylinder has piston. Through the cooperation of bottom sleeve ring, top sleeve ring, plastic spring and gauze, the coal mine hydraulic support jack protection device has the effect that the gauze protecting the piston when the jack extends does not need to be disassembled and reassembled, which is convenient for the hydraulic support to change position and save time, and through the cooperation of bottom sleeve ring, top sleeve ring, plastic spring and gauze, the coal mine hydraulic support jack protection device has the effect that the gauze protecting the jack piston can be easily folded up or down and exposed, which is convenient for inspection.

[0004] Although the above-mentioned patent protects the jack with gauze, a spring is arranged between the jack and the gauze, so that when the jack extends, the action force of the spring needs to be overcome to push, which increases the pressure of the jack extension and improves the energy consumption required for the jack support. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a hydraulic support jack protection device, which solves the problem that the jack needs to overcome the action force of the spring to push when extending.

[0006] In order to achieve the above object, the utility model discloses a kind of hydraulic support jack protection devices, including hydraulic support body, the hydraulic support body includes base and top plate, the front and rear of the opposite side between base and top plate are provided with jack, the top of base and the bottom of top plate are uniformly fixedly installed with the limiting ring compatible with jack, the limiting ring top around located below is fixedly connected with sliding cylinder, the inside sliding connection of sliding cylinder has sliding rod, and the bottom of limiting ring is fixedly connected with the one end of sliding rod, the surface of two limiting rings is provided with gauze tube, the top and bottom of gauze tube front portion are provided with first arc plate, the top and bottom of gauze tube rear portion are provided with second arc plate, one side of first arc plate and second arc plate is fixedly connected with connecting block, and the opposite side of two connecting blocks is rotatably connected with rotating rod by opening opening, and the other side of first arc plate and second arc plate is provided with limiting mechanism.

[0007] Preferably, the limiting mechanism includes a limiting plate and a clamping plate, the limiting plate is fixedly connected to the other side of the first arc plate, the clamping plate is fixedly connected to the other side of the second arc plate, the top of the clamping plate is slidingly connected with a limiting rod by opening an opening, one end of the limiting rod penetrates through the limiting plate and extends to the outside of the limiting plate, and a limiting opening compatible with the limiting rod is formed in the top of the limiting plate.

[0008] Preferably, the other end of the limiting rod is fixedly connected with a circular plate, and a spring is sleeved on the surface of the limiting rod between the clamping plate and the circular plate.

[0009] Preferably, the top of the surface of the sliding cylinder is fixedly connected with a connecting plate, the top of the surface of the jack is slidingly connected with a sliding sleeve, and one side of the connecting plate is fixedly connected with the surface of the sliding sleeve.

[0010] Preferably, a scraping sleeve is fixedly installed on the inner surface of the sliding sleeve, and an inclined portion is arranged on the top of the scraping sleeve.

[0011] Preferably, a guide ring compatible with the inclined portion is fixedly connected to the top of the sliding sleeve.

[0012] Beneficial effects

[0013] The utility model provides a kind of hydraulic support jack protection devices.Compared with prior art, it has the following beneficial effects:

[0014] (1) The utility model discloses a plurality of sliding cylinders and sliding rods are installed around the jack through two limiting rings being installed below and above the jack, the gauze cylinder is installed on the surface of the plurality of sliding cylinders and sliding rods, the gauze cylinder is clamped through the first arc plate and the second arc plate, the limiting mechanism fixes the first arc plate and the second arc plate, can be good with the gauze cylinder is surrounded on the surface of the jack and is protected, effectively prevent the dust from adhering to the surface of the jack, the gauze cylinder is supported through the sliding cylinder and the sliding rod, there is no redundant extrusion force, guarantee the effect of the jack support.

[0015] (2) The utility model discloses a jack contraction, the upper surface of the jack will pass through the scraper cover, the scraper cover is scraped to the upper surface of the jack, can be good with the dust on the surface of the jack is scraped, effectively prevent the dust from entering into the jack, guarantee the cleanliness of the jack. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is external structure schematic diagram of the utility model;

[0017] Figure 2 It is internal structure schematic diagram of hydraulic support body and gauze cylinder of the utility model;

[0018] Figure 3 It is structure schematic diagram of jack, limiting ring, sliding cylinder, sliding rod, connecting plate and guide ring of the utility model;

[0019] Figure 4 It is structure schematic diagram of first arc plate, second arc plate, connecting block, rotating rod and limiting mechanism of the utility model;

[0020] Figure 5 It is internal structure schematic diagram of connecting plate, sliding sleeve, scraper cover, inclined part and guide ring of the utility model.

[0021] In the drawing: 1, hydraulic support body;2, base;3, top plate;4, jack;5, limiting ring;6, sliding cylinder;7, sliding rod;8, gauze cylinder;9, first arc plate;10, second arc plate;11, connecting block;12, rotating rod;13, limiting mechanism;14, limiting plate;15, clamping plate;16, limiting rod;17, round plate;18, spring;19, connecting plate;20, sliding sleeve;21, scraper cover;22, inclined part;23, guide ring. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model.

[0023] Please refer to Figures 1-5The utility model provides a technical scheme: a hydraulic support is used jack protection device, including hydraulic support body 1, hydraulic support body 1 includes base 2 and top plate 3, and the front and rear of the opposite side between base 2 and top plate 3 are all provided with jack 4, and the top of base 2 and the bottom of top plate 3 are all fixedly installed with the limiting ring 5 matched with jack 4, and the periphery of the top of lower limiting ring 5 is all fixedly connected with sliding cylinder 6, and the inside sliding connection of sliding cylinder 6 has sliding rod 7, and one end of sliding rod 7 is fixedly connected with the bottom of upper limiting ring 5, and the surface of two limiting rings 5 is provided with gauze tube 8, as detailed description, the middle part of gauze tube 8 has wrinkle, and gauze tube 8 is convenient to extend or contract, and the top and bottom of gauze tube 8 front part are all provided with first arc plate 9, and the top and bottom of gauze tube 8 rear part are all provided with second arc plate 10, and one side of first arc plate 9 and second arc plate 10 is all fixedly connected with connecting block 11, and the opposite side of two connecting blocks 11 is rotatably connected with rotating rod 12 by opening opening, and the other side of first arc plate 9 and second arc plate 10 is provided with limiting mechanism 13.

[0024] Further, in order to facilitate the gauze tube 8 limiting fixed, limiting mechanism 13 includes limiting plate 14 and clamping plate 15, limiting plate 14 is fixedly connected to the other side of first arc plate 9, clamping plate 15 is fixedly connected to the other side of second arc plate 10, the top of clamping plate 15 is slidably connected with limiting rod 16 by opening opening, one end of limiting rod 16 penetrates limiting plate 14 and extends to the outside of limiting plate 14, the top of limiting plate 14 is provided with limiting mouth matched with limiting rod 16, the other end of limiting rod 16 is fixedly connected with circular plate 17, spring 18 is sleeved on the surface of limiting rod 16 and between clamping plate 15 and circular plate 17.

[0025] Further, in order to facilitate the gauze tube 8 limiting fixed, limiting mechanism 13 includes limiting plate 14 and clamping plate 15, limiting plate 14 is fixedly connected to the other side of first arc plate 9, clamping plate 15 is fixedly connected to the other side of second arc plate 10, the top of clamping plate 15 is slidably connected with limiting rod 16 by opening opening, one end of limiting rod 16 penetrates limiting plate 14 and extends to the outside of limiting plate 14, the top of limiting plate 14 is provided with limiting mouth matched with limiting rod 16, the other end of limiting rod 16 is fixedly connected with circular plate 17, spring 18 is sleeved on the surface of limiting rod 16 and between clamping plate 15 and circular plate 17.

[0026] Further, in order to facilitate the gauze tube 8 limiting fixed, limiting mechanism 13 includes limiting plate 14 and clamping plate 15, limiting plate 14 is fixedly connected to the other side of first arc plate 9, clamping plate 15 is fixedly connected to the other side of second arc plate 10, the top of clamping plate 15 is slidably connected with limiting rod 16 by opening opening, one end of limiting rod 16 penetrates limiting plate 14 and extends to the outside of limiting plate 14, the top of limiting plate 14 is provided with limiting mouth matched with limiting rod 16, the other end of limiting rod 16 is fixedly connected with circular plate 17, spring 18 is sleeved on the surface of limiting rod 16 and between clamping plate 15 and circular plate 17.

[0027] It should be noted that the diameter of the guide ring 23 is greater than the diameter of the jack 4, to prevent dust from falling on the surface of the jack 4.

[0028] In use, the plurality of limiting rings 5 are respectively installed above the base 2 and below the top plate 3, and the jack 4 is inserted between the upper and lower limiting rings 5, the jack 4 is limited and fixed by the upper and lower limiting rings 5, the gauze cylinder 8 is sleeved on the upper and lower limiting rings 5, the two first arc-shaped plates 9 and the second arc-shaped plate 10 are sleeved on the surface of the gauze cylinder 8, the limiting rod 16 is inserted into the limiting plate 14 through the clamping plate 15 under the action of the spring 18, the two first arc-shaped plates 9 and the second arc-shaped plate 10 are clamped on the gauze cylinder 8 on the surface of the limiting ring 5, the gauze cylinder 8 is limited on the surface of the jack 4, the surface of the jack 4 is protected and filtered, and dust is prevented from entering the gauze cylinder 8 to contact the jack 4;

[0029] When the jack 4 is controlled to shrink, the upper surface of the jack 4 shrinks downward and passes through the scraping sleeve 21, the surface of the jack 4 is scraped by the scraping sleeve 21, dust on the surface of the jack 4 is scraped onto the inclined part 22, and the dust is guided out by the guide ring 23.

Claims

1. A hydraulic support jack protection device comprising a hydraulic support body (1), characterized in that: The hydraulic support body (1) includes a base (2) and a top plate (3), the front and rear parts between the base (2) and the opposite side of the top plate (3) are provided with jacks (4), the top of the base (2) and the bottom of the top plate (3) are fixedly installed with limiting rings (5) matched with the jacks (4), the periphery of the top of the limiting ring (5) below is fixedly connected with a sliding cylinder (6), the sliding cylinder (6) is slidably connected with a sliding rod (7), one end of the sliding rod (7) is fixedly connected with the bottom of the limiting ring (5) above, the surfaces of the two limiting rings (5) are provided with gauze cylinders (8), the upper and lower parts of the front part of the gauze cylinder (8) are provided with first arc-shaped plates (9), the upper and lower parts of the rear part of the gauze cylinder (8) are provided with second arc-shaped plates (10), one side of the first arc-shaped plate (9) and the second arc-shaped plate (10) is fixedly connected with a connecting block (11), the opposite side of the two connecting blocks (11) is rotatably connected with a rotating rod (12) through an opening, the other side of the first arc-shaped plate (9) and the second arc-shaped plate (10) is provided with a limiting mechanism (13).

2. The hydraulic support jack guard device according to claim 1, wherein: The limiting mechanism (13) includes a limiting plate (14) and a clamping plate (15), the limiting plate (14) is fixedly connected to the other side of the first arc-shaped plate (9), the clamping plate (15) is fixedly connected to the other side of the second arc-shaped plate (10), the top of the clamping plate (15) is slidably connected with a limiting rod (16) through an opening, one end of the limiting rod (16) penetrates through the limiting plate (14) and extends to the outside of the limiting plate (14), the top of the limiting plate (14) is provided with a limiting opening matched with the limiting rod (16).

3. The hydraulic support jack guard device of claim 2, wherein: The other end of the limiting rod (16) is fixedly connected with a circular plate (17), the surface of the limiting rod (16) and between the clamping plate (15) and the circular plate (17) is sleeved with a spring (18).

4. The hydraulic support jack guard device of claim 1, wherein: The upper part of the surface of the sliding cylinder (6) is fixedly connected with a connecting plate (19), the upper part of the surface of the jack (4) is slidably connected with a sliding sleeve (20), one side of the connecting plate (19) and the surface of the sliding sleeve (20) are fixedly connected.

5. The hydraulic support jack guard device according to claim 4, wherein: The inner surface of the sliding sleeve (20) is fixedly installed with a scraping sleeve (21), the top of the scraping sleeve (21) is provided with an inclined part (22).

6. The hydraulic support jack guard device according to claim 5, wherein: The top of the sliding sleeve (20) is fixedly connected with a guide ring (23) matched with the inclined part (22).

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