Hydraulic support with anti-leakage function

Abstract

The utility model discloses a hydraulic support with a leak-proof function, which relates to the technical field of hydraulic support appliances and comprises two bases, mounting grooves are formed in the middles of the top surfaces of the bases, two groups of first hinge seats are arranged on the rear end surfaces of the bases, second hinge seats are arranged in the mounting grooves, and a transverse plate is transversely and fixedly connected between the front ends of the two bases; according to the anti-leakage hydraulic support, the anti-leakage assembly is additionally arranged on the hydraulic cylinder, so that the internal pressure of the hydraulic cylinder is conveniently reduced, the internal pressure of the hydraulic cylinder is timely relieved, hydraulic oil is prevented from leaking through a connecting gap, and the whole hydraulic support is conveniently and slowly moved forwards through the movable seat and the transverse plate; the second abutting plate can conveniently ascend and descend and drive the first abutting plate to adjust the inclination angle through the first hydraulic cylinder, the telescopic plate can conveniently move through the second hydraulic cylinder, the inclination angle of the third abutting plate can be conveniently controlled through the third hydraulic cylinder, and finally the problems that the hydraulic cylinders of the hydraulic support leak and the hydraulic support abuts against the inner wall of a mine hole are solved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support equipment technology, and in particular to a hydraulic support with anti-leakage function. Background Technology

[0002] Hydraulic supports are typically used underground to support and stabilize the walls of underground mines, ensuring the safety of miners and equipment. Due to their significant weight and the excessive pressure exerted by the mine walls, hydraulic cylinders are prone to hydraulic oil leakage. Furthermore, the low air circulation underground allows dust to accumulate on the extension rods, seeping into the cylinder and gradually worsening its sealing. When the pressure inside the cylinder increases, the slow depressurization process allows hydraulic oil to leak through the sealing gaps, preventing the hydraulic support from making proper contact with the mine walls. Therefore, these technical problems need to be addressed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydraulic support with anti-leakage function.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic support with anti-leakage function, comprising two bases, an installation groove in the middle of the top surface of the base, and two sets of first hinge seats on the rear end face of the base, a second hinge seat in the installation groove, and a horizontal plate fixedly connected to the front end of the two bases.

[0005] Preferably, a movable seat is longitudinally provided between the two bases. The movable seat has an L-shaped cross-section, and a hydraulic cylinder four is movably hinged to the upper front end face of the movable seat. The front end of the output shaft of the hydraulic cylinder four is movably hinged to the horizontal plate. A hydraulic cylinder one is provided in the mounting groove opened in the base. The lower end of the hydraulic cylinder one is movably hinged to the second hinge seat, and a stop plate two is movably hinged to the upper end of the output shaft of the hydraulic cylinder one.

[0006] Preferably, the rear end of the second abutment is movably hinged to the first abutment, and the two sides of the inner bottom surface of the first abutment are respectively movably hinged to two sets of support columns, and the other end of the two sets of support columns is movably hinged to the first hinge seat.

[0007] Preferably, a sliding groove is provided in the middle of the front end of the top of the second abutment plate, a telescopic plate is slidably connected in the sliding groove, and a hydraulic cylinder is connected to the rear end of the telescopic plate. The hydraulic cylinder is installed on the rear end face inside the sliding groove.

[0008] Preferably, the front end of the telescopic plate is movably hinged to a stop plate three, and the bottom surface of the telescopic plate is movably hinged to a hydraulic cylinder three, the output shaft of the hydraulic cylinder three being movably hinged to the stop plate three.

[0009] Preferably, hydraulic cylinder one, hydraulic cylinder two, and hydraulic cylinder three are all equipped with anti-leakage components; the anti-leakage components include a cylinder body, piston rod, retaining ring, top cover, four sealing rings, rubber gasket, and three sealing rings.

[0010] Preferably, the lower end of the cylinder is provided with a hinge ring, and the top surface is provided with an internal thread. The lower end of the cylinder is provided with a first main oil hole and a first auxiliary oil hole on one side and the front end, respectively. The upper end of the cylinder is provided with a second main oil hole and a second auxiliary oil hole on both sides, respectively. The lower end of the piston rod is placed inside the cylinder and abuts against the inner wall of the cylinder. The lower end of the piston rod is provided with a plurality of equidistant first sealing grooves on the outer side. The sealing ring is placed in the first sealing groove.

[0011] Preferably, the top surface of the cylinder has an internal threaded groove in the middle, the top cover is threaded to the cylinder, the rubber pad is installed on the inner wall of the upper end of the cylinder and abuts against the bottom surface of the top cover, and the top surface of the top cover has a through hole in the middle that mates with the piston rod. The inner wall of the through hole has a plurality of equidistant second sealing grooves, the sealing ring is placed in the second sealing groove, the retaining ring is placed at the lower end of the second main oil hole and the second auxiliary oil hole, and the retaining ring is installed on the inner wall of the cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, by adding an anti-leakage component to the hydraulic cylinder, it is easy to reduce the internal pressure of the hydraulic cylinder, release the internal pressure of the hydraulic cylinder in a timely manner, and prevent hydraulic oil from leaking through the connection gap. The movable seat and cross plate facilitate the slow forward movement of the hydraulic support as a whole. The first hydraulic cylinder facilitates the upward and downward movement of the second abutment plate and drives the first abutment plate to adjust the tilt angle. The second hydraulic cylinder facilitates the movement of the telescopic plate. The third hydraulic cylinder facilitates the control of the tilt angle of the third abutment plate. Ultimately, the problems of hydraulic cylinder leakage and the hydraulic support contacting the inner wall of the mine are solved. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of the hydraulic support proposed in this utility model;

[0015] Figure 2 This is a bottom view of the overall structure of the hydraulic support proposed in this utility model;

[0016] Figure 3 This is a front view sectional view of the hydraulic support proposed in this utility model;

[0017] Figure 4 This is a top sectional view of the hydraulic support proposed in this utility model;

[0018] Figure 5 This is a partial cross-sectional view of the hydraulic support structure proposed in this utility model;

[0019] Figure 6 This is a schematic diagram of the overall structure of the anti-leakage component proposed in this utility model;

[0020] Figure 7 This is a front cross-sectional view of the leak-proof component proposed in this utility model;

[0021] Figure 8 This is a side cross-sectional view of the anti-leakage component proposed in this utility model.

[0022] The following are the components listed in the diagram: 1. Base; 2. Support plate one; 3. Support plate two; 4. Support plate three; 5. Telescopic plate; 6. Moving seat; 7. Hydraulic cylinder one; 8. Hydraulic cylinder two; 9. Hydraulic cylinder three; 10. Hydraulic cylinder four; 11. Support column; 12. Cylinder body; 13. Piston rod; 14. Retaining ring; 15. Top cover; 16. Sealing ring; 17. Rubber pad; 18. Sealing ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example: See Figure 1-8 This utility model discloses a hydraulic support with anti-leakage function, comprising two bases 1. A mounting groove is provided in the center of the top surface of each base 1, and two sets of first hinge seats are provided on the rear end face of each base 1. A second hinge seat is provided within the mounting groove. A horizontal plate is fixedly connected to the front end of the two bases 1. A movable seat 6 is longitudinally provided between the two bases 1. The movable seat 6 has an L-shaped cross-section, and a hydraulic cylinder 10 is movably hinged to the upper front end face of the movable seat 6. The front end of the output shaft of the hydraulic cylinder 10 is movably hinged to the horizontal plate. A hydraulic cylinder 7 is provided in the mounting groove of the base 1. The lower end of the hydraulic cylinder 7 is movably hinged to the second hinge seat, and a stop plate 3 is movably hinged to the upper end of the output shaft of the hydraulic cylinder 7. The movable seat 6 and the horizontal plate facilitate the slow forward movement of the hydraulic support as a whole, and the hinge seats facilitate the support of the column 11.

[0025] In this utility model, the rear end of the second abutment plate 3 is movably hinged to the first abutment plate 2, and two sets of support columns 11 are movably hinged to both sides of the inner bottom surface of the first abutment plate 2, with the other ends of the two sets of support columns 11 movably hinged to the first hinge seat; a sliding groove is laterally opened in the middle of the front end of the top end of the second abutment plate 3, and a telescopic plate 5 is slidably connected in the sliding groove; a hydraulic cylinder 2 8 is connected to the rear end of the telescopic plate 5, and the hydraulic cylinder 2 8 is installed on the rear end face inside the sliding groove; the front end of the telescopic plate 5 is movably hinged to the third abutment plate 4, and a hydraulic cylinder 3 9 is movably hinged to the middle of the bottom surface of the telescopic plate 5, with the output shaft of the hydraulic cylinder 3 9 connected to the third abutment plate 3. 4. Movable hinge; hydraulic cylinder 7, hydraulic cylinder 8, and hydraulic cylinder 9 are all equipped with anti-leakage components; the anti-leakage components include cylinder body 12, piston rod 13, retaining ring 14, top cover 15, four sealing rings 16, rubber gasket 17, and three sealing rings 18; hydraulic cylinder 8 facilitates the extension and retraction of telescopic plate 5, hydraulic cylinder 7 facilitates the up and down movement of abutment plate 3, and simultaneously drives abutment plate 2 to move up and down and adjust the tilt angle, and abutment plate 2 is fixed by support column 11, and hydraulic cylinder 9 facilitates the control of the connection angle between abutment plate 34 and telescopic plate 5.

[0026] In this utility model, the lower end of the cylinder body 12 is provided with a hinge ring, and the top surface has an internal thread in the middle. A first main oil hole and a first auxiliary oil hole are respectively provided on one side and the front end of the lower end of the cylinder body 12. A second main oil hole and a second auxiliary oil hole are respectively provided on both sides of the upper end of the cylinder body 12. The lower end of the piston rod 13 is placed inside the cylinder body 12 and abuts against the inner wall of the cylinder body 12. Multiple equidistant first sealing grooves are provided on the outer side of the lower end of the piston rod 13, and a sealing ring 18 is placed in the first sealing groove. An internal thread groove is provided in the middle of the top surface of the cylinder body 12. The top cover 15 is threadedly connected to the cylinder body 12. A rubber pad 17 is installed on the inner wall of the upper end of the cylinder body 12. The top cover 15 abuts against the bottom surface, and the top surface of the top cover 15 has a through hole in the middle that mates with the piston rod 13. The inner wall of the through hole has multiple equidistant second sealing grooves. The sealing ring 16 is placed in the second sealing groove. The retaining ring 14 is placed at the lower end of the second main oil hole and the second auxiliary oil hole, and the retaining ring 14 is installed on the inner wall of the cylinder body 12. The hinge ring facilitates the installation of the hydraulic cylinder, the retaining ring 14 facilitates the restriction of the piston's movement space, the sealing ring 16 facilitates the prevention of hydraulic oil leakage, the rubber gasket 17 facilitates the prevention of hydraulic oil leakage through the thread gap, and the sealing ring 18 facilitates the prevention of mutual penetration of hydraulic oil in the upper and lower oil chambers.

[0027] Working principle: When using this utility model, firstly, during the use of the hydraulic support, the hydraulic cylinder 7 extends and retracts, causing the abutment plate 3 to move upward and abut against the top of the underground coal seam. During the upward extension and retraction of the hydraulic cylinder 7, the tilt angle of the abutment plate 2 changes and abuts against the inner wall of the mine, and is supported by the support column 11. The hydraulic cylinder 8 extends and retracts forward, causing the telescopic plate 5 to move forward, and the hydraulic cylinder 9 extends forward to increase the tilt angle of the abutment plate 4, so that the hydraulic support can provide maximum support to the walls inside the mine and increase the underground working area.

[0028] Due to the weight of the hydraulic support itself and the pressure of the mine wall, the internal pressure of cylinder 12 increases sharply. During the use of the anti-leakage component, when the hydraulic cylinder extends upward, oil first enters through the main oil inlet at the lower end of the hydraulic cylinder to fill the space at the bottom of the piston, causing the piston rod 13 to extend upward. The pressure in the upper oil chamber at the upper end of the hydraulic cylinder gradually increases, and oil exits through the main inlet and outlet. When the pressure in the upper oil chamber reaches a certain value, the pressure relief valve of the auxiliary oil outlet opens, and hydraulic oil is discharged through the auxiliary oil outlet and the main inlet and outlet, reducing the internal pressure of the upper oil chamber. When the hydraulic cylinder retracts downward, oil first enters through the main inlet and outlet of the upper oil chamber, pushing the piston downward, compressing the space of the lower oil chamber and increasing the pressure. Hydraulic oil in the lower oil chamber exits through the main inlet and outlet. When the internal pressure of the lower oil chamber reaches a certain value, the pressure relief valve opens and oil exits through the auxiliary oil outlet and the main inlet and outlet, realizing the pressure relief of the upper and lower oil chambers of cylinder 12 and preventing hydraulic oil leakage.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hydraulic support with anti-leakage function, comprising two bases (1), characterized in that: The base (1) has an installation groove in the middle of its top surface, and the rear end face of the base (1) has two sets of first hinge seats. The installation groove has a second hinge seat, and a horizontal plate is fixedly connected to the front end of the two bases (1). A movable seat (6) is longitudinally provided between the two bases (1). The movable seat (6) has an L-shaped cross-section, and a hydraulic cylinder four (10) is movably hinged to the upper front end face of the movable seat (6). The front end of the output shaft of the hydraulic cylinder four (10) is movably hinged to the horizontal plate. A hydraulic cylinder one (7) is provided in the mounting groove opened in the base (1). The lower end of the hydraulic cylinder one (7) is movably hinged to the second hinge seat, and the upper end of the output shaft of the hydraulic cylinder one (7) is movably hinged to the abutment plate two (3). The rear end of the second abutment (3) is movably hinged to the first abutment (2), and the two sides of the inner bottom surface of the first abutment (2) are respectively movably hinged to two sets of support columns (11), and the other end of the two sets of support columns (11) is movably hinged to the first hinge seat. The front end of the top plate 2 (3) is provided with a horizontal groove, and a telescopic plate (5) is slidably connected in the groove. The rear end of the telescopic plate (5) is connected to a hydraulic cylinder 2 (8), and the hydraulic cylinder 2 (8) is installed on the rear end face inside the groove. The telescopic plate (5) is movably hinged to the front end of the abutment plate three (4), and the telescopic plate (5) is movably hinged to the middle of the bottom surface of the bottom surface of the telescopic plate three (9). The output shaft of the hydraulic cylinder three (9) is movably hinged to the abutment plate three (4). Hydraulic cylinder one (7), hydraulic cylinder two (8) and hydraulic cylinder three (9) are all equipped with anti-leakage components; the anti-leakage components include cylinder body (12), piston rod (13), retaining ring (14), top cover (15), four sealing rings (16), rubber gasket (17) and three sealing rings (18). The cylinder body (12) has a hinge ring at the lower end and an internal thread in the middle of the top surface. The cylinder body (12) has a first main oil hole and a first auxiliary oil hole on one side and the front end respectively. The cylinder body (12) has a second main oil hole and a second auxiliary oil hole on both sides of the upper end respectively. The piston rod (13) is placed inside the cylinder body (12) and abuts against the inner wall of the cylinder body (12). The piston rod (13) has multiple equidistant first sealing grooves on the outer side of the lower end. The sealing ring (18) is placed in the first sealing groove. The cylinder body (12) has an internal threaded groove in the middle of its top surface. The top cover (15) is threadedly connected to the cylinder body (12). The rubber pad (17) is installed on the inner wall of the upper end of the cylinder body (12) and abuts against the bottom surface of the top cover (15). The top cover (15) has a through hole in the middle of its top surface that cooperates with the piston rod (13). The inner wall of the through hole has multiple equidistant second sealing grooves. The sealing ring (16) is placed in the second sealing groove. The retaining ring (14) is placed at the lower end of the second main oil hole and the second auxiliary oil hole and is installed on the inner wall of the cylinder body (12).

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