Dustproof sealing ring for hydraulic support stand column oil cylinder

Abstract

The utility model discloses a dustproof sealing ring for a hydraulic support stand column oil cylinder, and relates to the technical field of mechanical equipment. The sealing strip comprises a sealing strip body, a fixing assembly is arranged at one end of the sealing strip body, and a sealing assembly is arranged on the inner side of the sealing strip body. A fixing ring in the fixing assembly sleeves one end of the sealing strip in a threaded mode, arc-shaped grooves are formed in the periphery of the end face of the fixing ring, sliding blocks are movably connected into the arc-shaped grooves, bolt holes are formed in the outer walls of the sliding blocks, and positioning bolts are connected into first mounting blocks on one sides of the sliding blocks in a threaded mode. The sliding block in the fixing assembly drives the bolt hole to slide on the fixing ring, so that the bolt hole and a threaded hole in the oil cylinder are positioned, and the problem that an existing device is inconvenient to install on different oil cylinders is solved; the oil seal unit and the air seal unit are installed in the sealing strip through the installation cylinder and the cover plate in the sealing assembly, and the problem that in the prior art, the oil seal unit and the air seal unit are inconvenient to replace and overhaul independently is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical equipment, in particular to a dustproof sealing ring for a hydraulic support column oil cylinder. Background Art

[0002] With the development of science and technology, the emergence of various mechanical equipment has greatly facilitated people's daily life and production. Among them, hydraulic support is one of the most common mechanical equipment in mining engineering. It is a structure used to control the ore pressure of the mining working face. The hydraulic support is mainly composed of a column cylinder, a top beam, a base, a push device and a control system. In the column cylinder of the hydraulic support, the dustproof seal is a very important component, which is used to enhance the sealing performance of the column cylinder.

[0003] The document with the existing publication number CN220980012U discloses a dustproof ring for an oil cylinder, including an outer sealing strip, a dustproof unit, an oil seal unit, an air seal unit, a reinforcement unit and a fixing unit; the outer sealing strip is a long circular ring, and the outer sealing strip skeleton is embedded inside the outer sealing strip; the dustproof unit includes a dustproof ring body, a dust collecting groove, a dustproof ring body skeleton and a dust discharge hole, the inner side of the left end of the outer sealing strip is fixedly connected to the dustproof ring body, the right side of the inner part of the dustproof ring body is embedded with the dustproof ring body skeleton, the left side of the inner part of the dustproof ring body is provided with a dust collecting groove, and the left wall of the dust collecting groove is provided with dust discharge holes in a circular array; the oil seal unit is installed on the left side of the middle part of the inner wall of the outer sealing strip; the air seal unit is installed on the right side of the middle part of the inner wall of the outer sealing strip; the dust collecting groove and the dust discharge hole are arranged on the outward side of the sealing ring;

[0004] However, it still has the following disadvantages in actual use:

[0005] 1. The above-mentioned dust ring for oil cylinder, its fixing unit includes a fixing ring and a fixing ring frame, and the fixing ring and the fixing ring frame are provided with a plurality of groups of fixing bolt through holes corresponding to each other in a circumferential array, and the outer sealing strip is installed on the oil cylinder through the fixing bolt through holes. However, during use, the positions of the fixing bolt through holes on the fixing ring and the fixing ring frame are fixed, while the positions of the threaded holes on the oil cylinder vary according to the size and model of the oil cylinder, which makes it inconvenient to adjust the positions of the fixing bolt through holes according to the threaded holes on the oil cylinder, and thus it is inconvenient to install it on oil cylinders of different sizes or models;

[0006] 2. The dustproof ring for the oil cylinder mentioned above has an oil seal unit installed on the left side of the middle part of the inner wall of the outer side sealing strip, and an air seal unit installed on the right side of the middle part of the inner wall of the outer side sealing strip. The dustproof sealing performance is enhanced by the oil seal unit and the air seal unit. However, during use, the oil seal unit and the air seal unit are an integrated structure with the outer side sealing strip. As a result, when a single oil seal unit or air seal unit is damaged, it can only be replaced as a whole, and the damaged oil seal unit or air seal unit cannot be replaced separately, and the maintenance cost is relatively high.

[0007] To this end, we provide dustproof sealing rings for hydraulic support column cylinders to solve the above problems. Utility Model Content

[0008] The utility model aims to provide a dustproof sealing ring for a hydraulic support column cylinder, wherein a slider in a fixing assembly drives a bolt hole to slide on the fixing ring, thereby positioning the bolt hole and the threaded hole on the cylinder, thereby solving the existing problem that it is inconvenient to install the oil seal unit on different cylinders, and installing an oil seal unit and an air seal unit inside a sealing strip through a mounting tube and a cover plate in the sealing assembly, thereby solving the existing problem that it is inconvenient to replace and overhaul the oil seal unit and the air seal unit separately.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model is a dustproof sealing ring for a hydraulic support column oil cylinder, comprising a sealing strip, one end of which is provided with a fixing component, and the inner side of the sealing strip is provided with a sealing component;

[0011] The fixing ring in the fixing assembly is threadedly sleeved on one end of the sealing strip, and arc grooves are provided around the end surface of the fixing ring. A slider is movably connected inside the arc groove, and a bolt hole is provided on the outer wall of the slider. A positioning bolt is internally threadedly connected to a first mounting block on one side of the slider, and an end of the positioning bolt away from the first mounting block passes through a through groove on the inner wall of one side of the arc groove and is sleeved with a gasket.

[0012] The mounting tube in the sealing assembly is clamped on the inner side of the sealing strip, and an oil seal unit and an air seal unit are respectively arranged on both sides of the interior of the mounting tube. A second sealing ring is arranged on both sides of the oil seal unit and the air seal unit, and a cover plate is also threadedly sleeved on one side of the interior of the mounting tube.

[0013] The utility model is further configured as follows: a dustproof rubber ring is bonded to the inner side surface of the fixing ring.

[0014] The utility model is further configured as follows: a slide groove is provided on the inner wall on the other side of the arc groove, a second mounting block is movably connected inside the slide groove, one end of the second mounting block passes through the groove and is welded to a side of the slider away from the first mounting block.

[0015] The utility model is further configured as follows: a groove is provided on the inner wall of the sealing strip, a convex block is provided inside the groove with clearance, one side of the convex block passes through the groove and is respectively welded to the outer wall of the installation tube.

[0016] The utility model is further configured as follows: an inner cylinder is fixedly connected to the inner center of the installation cylinder, and a plurality of through holes are provided at equal intervals along the circumferential direction on both sides of the outer side surface of the inner cylinder.

[0017] The utility model is further configured as follows: positioning holes are opened around the outer walls on both sides of the second sealing ring, and positioning columns are gap-fitted inside the positioning holes. One end of the positioning column passes through the positioning hole and is respectively welded to the inner wall of the mounting tube, the outer walls on both sides of the oil seal unit and the air seal unit, and the outer wall on one side of the cover plate located on the inner side of the mounting tube.

[0018] The utility model is further configured as follows: a mounting groove is provided on the inner side surface of the mounting tube, a first sealing ring is bonded inside the mounting groove, and the inner side surface of the first sealing ring is abutted and connected to the outer side surfaces of the oil sealing unit and the gas sealing unit.

[0019] The utility model is further configured as follows: an oil storage cavity and an air storage cavity are respectively provided inside the oil seal unit and the air seal unit, and an oil seepage groove and an air seepage groove are respectively provided on the inner side surfaces of the oil seal unit and the air seal unit.

[0020] The utility model is further configured as follows: a rotating block is welded on an outer wall of one side of the cover plate located outside the installation cylinder.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model sets a fixing component, screws the positioning bolts, separates the gasket from the outer side of the fixing ring, and drives the bolt hole to slide in the arc groove through the slider, so as to change the position of the bolt hole on the fixing ring, and when the bolt hole moves to a specified position, screws the positioning bolts again, so that the gasket contacts the outer side of the fixing ring again, which facilitates the installation of the sealing strip on oil cylinders of different sizes or models, and improves its practicality.

[0023] 2. The utility model provides a sealing assembly, and drives the cover plate to rotate through the rotating block, so that the cover plate moves out from the interior of the mounting tube, and takes out its oil seal unit and gas seal unit from the interior of the mounting tube, and replaces the oil seal unit or the gas seal unit at the same time. After the replacement, the oil seal unit and the gas seal unit are re-fixed in the interior of the mounting tube through the cover plate, and the mounting tube is re-clamped in the interior of the sealing strip, thereby realizing the separate replacement of the damaged oil seal unit or the gas seal unit, thereby reducing its maintenance cost.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of the dustproof sealing ring for the hydraulic support column cylinder;

[0027] Figure 2 This is a disassembled diagram of the overall structure of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the fixing assembly of the utility model;

[0029] Figure 4 This is a structural disassembly diagram of the fixing ring of the utility model;

[0030] Figure 5 This is a structural disassembly diagram of the slider of the utility model;

[0031] Figure 6 This is a structural disassembly diagram of the sealing component of the utility model;

[0032] Figure 7 This is a structural disassembly diagram of the installation tube of the utility model;

[0033] Figure 8 It is a front cross-sectional view of the oil seal unit of the utility model;

[0034] Fig. 9 It is a front cross-sectional view of the gas sealing unit of the utility model.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1-sealing strip, 101-groove, 2-fixing assembly, 201-fixing ring, 201a-dustproof rubber ring, 202-arc groove, 202a-through groove, 202b-slideway, 203-slider, 203a-first mounting block, 203b-second mounting block, 204-bolt hole, 205-positioning bolt, 206-gasket, 3-sealing assembly, 301-mounting cylinder, 301a- Bump, 301b-inner cylinder, 301c-through hole, 301d-installing groove, 301e-first sealing ring, 302-oil sealing unit, 302a-positioning column, 302b-oil storage cavity, 302c-oil seepage groove, 303-gas sealing unit, 303a-gas storage cavity, 303b-gas seepage groove, 304-second sealing ring, 304a-positioning hole, 305-cover plate, 305a-rotating block. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0039] See also Figure 1-5 As shown, it is the first embodiment of the utility model, which provides a dustproof sealing ring for a hydraulic support column cylinder, including a sealing strip 1 and a fixing component 2, and the fixing component 2 includes a fixing ring 201, an arc groove 202, a slider 203, a bolt hole 204, a positioning bolt 205 and a gasket 206. The slider 203 drives the bolt hole 204 to move inside the arc groove 202, and the positioning bolt 205 and the gasket 206 are used to position the slider 203, thereby solving the existing problem of inconvenience in positioning between the bolt hole 204 and the threaded hole on the cylinder.

[0040] Specifically, the fixing ring 201 is threadedly sleeved on one end of the sealing strip 1, and arc grooves 202 are provided around the end surface of the fixing ring 201. The slider 203 is movably connected inside the arc groove 202, and a bolt hole 204 is provided on the outer wall of the slider 203. A first mounting block 203a on one side of the slider 203 is internally threadedly connected with a positioning bolt 205, and the end of the positioning bolt 205 away from the first mounting block 203a passes through the through groove 202a on the inner wall of one side of the arc groove 202 and is sleeved with a gasket 206. The setting of the fixing ring 201 is used to install the sealing strip 1 on the oil cylinder, and the setting of the arc groove 202 realizes the movable installation of the slider 203. The setting of the slider 203 is used to drive the bolt hole 204 to move, and the setting of the bolt hole 204 is used to bolt the fixing ring 201 and the oil cylinder. The setting of the first mounting block 203a is used to install the positioning bolt 205, and the settings of the positioning bolt 205 and the gasket 206 are used to position the slider 203.

[0041] Furthermore, a dustproof rubber ring 201a is bonded to the inner side of the fixing ring 201, and the dustproof rubber ring 201a is used to prevent dust from entering the connection between the fixing ring 201 and the oil cylinder;

[0042] A sliding groove 202b is provided on the inner wall on the other side of the arc groove 202, and a second mounting block 203b is movably connected inside the sliding groove 202b. One end of the second mounting block 203b passes through the groove 101 and is welded to the side of the slider 203 away from the first mounting block 203a. The setting of the sliding groove 202b and the second mounting block 203b is used to slide the slider 203 on the inner side of the arc groove 202.

[0043] The operation process of this embodiment is as follows: first, the fixing ring 201 is threadedly sleeved on the sealing strip 1, and the sealing strip 1 is installed on the oil cylinder, and then the positioning bolt 205 is screwed to separate the gasket 206 from the fixing ring 201, and the bolt hole 204 is driven to move by the slider 203, so that the bolt hole 204 is positioned with the threaded hole on the oil cylinder, and when the bolt hole 204 is aligned with the threaded hole, the positioning bolt 205 is screwed again to make the gasket 206 contact the outer wall of the fixing ring 201 again, and finally the fixing ring 201 and the oil cylinder are fixed by bolts, thereby achieving the fixation between the sealing strip 1 and the oil cylinder. Specific embodiment 2

[0045] See also Figure 6-9As shown, it is the second embodiment of the utility model, which is based on the previous embodiment, but is different from the previous embodiment in that a sealing assembly 3 is arranged on the inner side of the sealing strip 1, and the sealing assembly 3 includes a mounting tube 301, an oil seal unit 302, an air seal unit 303, a second sealing ring 304 and a cover plate 305. The oil seal unit 302 and the air seal unit 303 are mounted inside the mounting tube 301 through the cover plate 305, and are fixed inside the sealing strip 1 through the mounting tube 301, which solves the existing problem of inconvenience in replacing damaged oil seal units 302 or air seal units 303 separately.

[0046] Specifically, the mounting tube 301 is clamped on the inner side of the sealing strip 1, and the oil seal unit 302 and the gas seal unit 303 are respectively arranged on both sides of the interior of the mounting tube 301, and the second sealing ring 304 is arranged on both sides of the oil seal unit 302 and the gas seal unit 303. A cover plate 305 is also threadedly sleeved on one side of the interior of the mounting tube 301. The mounting tube 301 and the cover plate 305 are arranged to install the oil seal unit 302 and the gas seal unit 303. The arrangement of the oil seal unit 302 and the gas seal unit 303 realizes the dustproof sealing performance of the sealing strip 1, and the arrangement of the second sealing ring 304 is used to ensure the sealing of the connection between the oil seal unit 302 and the gas seal unit 303 and the mounting tube 301 and the cover plate 305.

[0047] Furthermore, a groove 101 is provided on the inner wall of the sealing strip 1, and a protrusion 301a is provided inside the groove 101 with clearance, and one side of the protrusion 301a passes through the groove 101 and is welded to the outer wall of the mounting tube 301 respectively. The arrangement of the groove 101 and the protrusion 301a realizes the clamping connection between the sealing strip 1 and the mounting tube 301;

[0048] The inner center of the mounting cylinder 301 is fixedly connected with an inner cylinder 301b. Both sides of the outer side of the inner cylinder 301b are provided with multiple groups of through holes 301c at equal intervals along the circumferential direction. The inner cylinder 301b is provided to enhance the sealing performance of the inner side of the oil seal unit 302 and the gas seal unit 303. The through holes 301c are provided to allow the sealing oil or sealing gas to move to the connection between the oil cylinder and the mounting cylinder 301.

[0049] Positioning holes 304a are provided around the outer walls on both sides of the second sealing ring 304, and positioning posts 302a are provided inside the positioning holes 304a with clearance fit, and one end of the positioning posts 302a passes through the positioning holes 304a and is welded to the inner wall of the installation cylinder 301, the outer walls on both sides of the oil seal unit 302 and the gas seal unit 303, and the outer wall on one side of the cover plate 305 located on the inner side of the installation cylinder 301, and the arrangement of the positioning holes 304a and the positioning posts 302a realizes the positioning between the second sealing ring 304 and the installation cylinder 301, the oil seal unit 302, the gas seal unit 303 and the cover plate 305;

[0050] An installation groove 301d is provided on the inner side of the installation cylinder 301, and a first sealing ring 301e is bonded inside the installation groove 301d. The inner side of the first sealing ring 301e is abutted and connected to the outer side of the oil seal unit 302 and the gas seal unit 303. The installation groove 301d is used to install the first sealing ring 301e. The first sealing ring 301e strengthens the sealing performance of the connection between the outer side of the oil seal unit 302 and the gas seal unit 303 and the inner side of the installation cylinder 301.

[0051] The oil seal unit 302 and the gas seal unit 303 are respectively provided with an oil storage chamber 302b and an air storage chamber 303a, and the inner side surfaces of the oil seal unit 302 and the gas seal unit 303 are respectively provided with an oil seepage groove 302c and an air seepage groove 303b. The setting of the oil storage chamber 302b and the air storage chamber 303a respectively enables the storage of sealing oil and sealing gas, and the setting of the oil seepage groove 302c and the air seepage groove 303b respectively enables the penetration of sealing oil and sealing gas;

[0052] A rotating block 305 a is welded on an outer wall of the cover plate 305 located outside the installation tube 301 . The arrangement of the rotating block 305 a facilitates the rotation of the cover plate 305 .

[0053] The rest of the structure is the same as that of the first embodiment.

[0054] The operation process of this embodiment is as follows: first, the installation cylinder 301 is taken out from the sealing strip 1, and an external force is applied to the cover plate 305 by the rotating block 305a, so that the cover plate 305 moves out from the inside of the installation cylinder 301, and then the oil seal unit 302 and the gas seal unit 303 are taken out from the inside of the installation cylinder 301, and the damaged oil seal unit 302 or the gas seal unit 303 is replaced separately, and after the replacement, the oil seal unit 302 and the gas seal unit 303 are connected by the second sealing ring 304, and placed in the inside of the installation cylinder 301 at the same time, and finally the cover plate 305 is driven to rotate again by the rotating block 305a, so that the cover plate 305 is threadedly connected to the inside of the installation cylinder 301 again, and the installation cylinder 301 is clamped in the inside of the sealing strip 1, so that the damaged oil seal unit 302 and the gas seal unit 303 are replaced separately.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A dustproof seal ring for a hydraulic support column cylinder, comprising a sealing strip (1), one end of the sealing strip (1) being provided with a fixing component (2), and the inner side of the sealing strip (1) being provided with a sealing component (3), characterized in that: The fixing ring (201) in the fixing assembly (2) is threadedly sleeved on one end of the sealing strip (1), and arc-shaped grooves (202) are provided around the end surface of the fixing ring (201), a slider (203) is movably connected inside the arc-shaped groove (202), and a bolt hole (204) is provided on the outer wall of the slider (203), a first mounting block (203a) on one side of the slider (203) is internally threadedly connected to a positioning bolt (205), and an end of the positioning bolt (205) away from the first mounting block (203a) passes through a through groove (202a) on the inner wall of one side of the arc-shaped groove (202) and is sleeved with a gasket (206); The installation tube (301) in the sealing assembly (3) is clamped on the inner side of the sealing strip (1), and an oil seal unit (302) and an air seal unit (303) are respectively provided on both sides of the interior of the installation tube (301), and a second sealing ring (304) is provided on both sides of the oil seal unit (302) and the air seal unit (303), and a cover plate (305) is also threadedly sleeved on one side of the interior of the installation tube (301).

2. The dustproof seal ring for the hydraulic support column cylinder according to claim 1 is characterized in that: A dustproof rubber ring (201a) is bonded onto the inner side surface of the fixing ring (201).

3. The dustproof seal ring for the hydraulic support column cylinder according to claim 1 is characterized in that: A sliding groove (202b) is provided on the inner wall of the other side of the arc-shaped groove (202), and a second mounting block (203b) is movably connected inside the sliding groove (202b), and one end of the second mounting block (203b) passes through the groove (101) and is welded to a side of the sliding block (203) away from the first mounting block (203a).

4. The dustproof seal ring for the hydraulic support column cylinder according to claim 1 is characterized in that: A groove (101) is provided on the inner wall of the sealing strip (1), and a protrusion (301a) is loosely fitted inside the groove (101), one side of the protrusion (301a) passes through the groove (101) and is respectively welded to the outer wall of the installation cylinder (301).

5. The dustproof seal ring for the hydraulic support column cylinder according to claim 4 is characterized in that: The inner center of the installation cylinder (301) is fixedly connected to an inner cylinder (301b), and both sides of the outer side surface of the inner cylinder (301b) are provided with multiple groups of through holes (301c) at equal intervals in the circumferential direction.

6. The dustproof seal ring for the hydraulic support column cylinder according to claim 1 is characterized in that: Positioning holes (304a) are provided around the outer walls on both sides of the second sealing ring (304), and positioning columns (302a) are loosely fitted inside the positioning holes (304a). One end of the positioning column (302a) passes through the positioning hole (304a) and is respectively welded to the inner wall of the installation cylinder (301), the outer walls on both sides of the oil seal unit (302) and the air seal unit (303), and the outer wall on one side of the cover plate (305) located inside the installation cylinder (301).

7. The dustproof seal ring for the hydraulic support column cylinder according to claim 6 is characterized in that: The inner side surface of the installation tube (301) is provided with an installation groove (301d), and a first sealing ring (301e) is bonded inside the installation groove (301d), and the inner side surface of the first sealing ring (301e) is abutted and connected to the outer side surfaces of the oil seal unit (302) and the gas seal unit (303).

8. The dustproof seal ring for the hydraulic support column cylinder according to claim 7 is characterized in that: The oil seal unit (302) and the gas seal unit (303) are respectively provided with an oil storage cavity (302b) and a gas storage cavity (303a) inside, and the inner side surfaces of the oil seal unit (302) and the gas seal unit (303) are respectively provided with an oil seepage groove (302c) and a gas seepage groove (303b).

9. The dustproof seal ring for the hydraulic support column cylinder according to claim 6, characterized in that: A rotating block (305a) is welded to an outer wall of one side of the cover plate (305) located outside the installation cylinder (301).

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