CN214888092U

CN214888092U - Positioning connection structure of oil cylinder valve seat

Info

Publication number: CN214888092U
Application number: CN202121017382.0U
Authority: CN
Inventors: 张从兵; 杨凯; 徐魁; 叶京; 张翔
Original assignee: Triumph Heavy Industry Co Ltd
Current assignee: Triumph Heavy Industry Co Ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-11-26
Anticipated expiration: 2031-05-13

Abstract

The utility model belongs to the field of development machines and airborne temporary support equipment, and particularly discloses a positioning and connecting structure of an oil cylinder valve seat, which comprises a balance valve body, a valve seat and a cylinder barrel; two oil inlet channels are symmetrically arranged in the valve seat, two oil guide channels butted with the oil inlet channels are correspondingly arranged on the assembly surface of the cylinder barrel, sleeves aligned and connected with the two oil inlet channels are embedded in the bottom surface of the valve seat, and the lower parts of the two sleeves extend out of the valve seat; the center of the valve seat protrudes downwards to form a clamping block, and the bottom surface of the valve seat is respectively provided with a sealing gasket at the outer side of the two sleeves; positioning notches for embedding the sleeves are formed in the positions of the two oil guide channels in the cylinder barrel assembly surface, a clamping groove for embedding the clamping block is reserved between the two positioning notches, and sealing grooves for embedding the sealing gasket are formed in the two sides of the top surface of each positioning notch; can accurate counterpoint, solve high-pressure fluid seepage and then probably with the problem of disk seat welding seam spalling all around to the contact gap of disk seat with the jar section of thick bamboo wall, sealing performance is high.

Description

Positioning connection structure of oil cylinder valve seat

Technical Field

The utility model relates to a tunneller and machine carry temporary support equipment field specifically are a location connection structure of hydro-cylinder disk seat.

Background

A cantilever type development machine and an onboard temporary support device are equipment widely applied to coal mine roadway development and support at present. A series of actions of the heading machine such as gun head stretching, cutting lifting, shovel plate lifting and the like are completed by the stretching of a hydraulic oil cylinder, and all the actions of the onboard temporary support device including stretching forwards, folding, lifting and turning are completed by the stretching of the hydraulic oil cylinder. The two devices have the problems of poor working condition, large load and frequent start and stop in actual use, and a balance valve is additionally arranged on each oil cylinder to balance the pressure difference and the flow difference between the rod cavity and the rodless cavity, so that the oil cylinders can work stably. Therefore, a valve seat of a balance valve is required to be welded and installed on the outer wall of a cylinder barrel of the oil cylinder, an oil hole channel in the valve seat is in butt joint with an oil hole channel on the wall of the cylinder barrel, the periphery of the valve seat is welded and fixed on the outer wall of the cylinder barrel, and oil flows into the valve seat through the balance valve and then enters the oil cylinder.

The upper surface of the valve seat is contacted with the bottom plane of the balance valve, and the position of an oil port on the valve seat is determined according to the position of the oil port on the bottom plane of the balance valve; the lower surface of the valve seat is contacted with the outer cylinder wall of the oil cylinder, the position of an oil port on the valve seat is determined according to the position of the oil port on the outer cylinder wall, the oil port on the outer cylinder wall needs to avoid a piston in the oil cylinder, and the distance which can be adjusted back and forth on the position is limited; therefore, the oil ports on the upper surface and the lower surface of the valve seat cannot be communicated in a straight line but are communicated through twice right-angle bending. Because the oil port on the lower surface cannot be seen from the oil port on the upper surface of the valve seat through visual inspection, the valve seat can only be roughly positioned by external means such as drawing lines on the outer surface of the valve seat and the oil cylinder, and the valve seat has the defect of inaccurate positioning in the axial direction of the oil cylinder and the circumferential direction of the outer wall of the cylinder barrel. Therefore, 100% of oil ports on the valve seat are difficult to be butted with the oil ports on the outer wall of the cylinder barrel, dislocation exists, interception can be formed due to the dislocation, the interception greatly influences the working performance of the oil cylinder because a channel is narrowed, and even when the dislocation is serious, the whole oil cylinder cannot meet the working performance requirement. Simultaneously, another serious hidden danger still exists in this kind of hydraulic fluid port butt joint mode: the bottom plane of the valve seat and the outer wall of the cylinder barrel are in hard surface and hard surface contact, complete sealing is difficult to achieve, part of high-pressure oil permeates into a gap between two contact surfaces from the butt joint of the oil hole, the working pressure of the oil cylinder of the excavator is up to 25MPa, the high pressure oil extremely possibly cracks a welding line if the welding line around the valve seat is not firm, and the serious safety accident that people are injured by explosion welding oil leakage and even flying of the valve seat is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a location connection structure of hydro-cylinder disk seat to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a positioning connection structure of an oil cylinder valve seat comprises a balance valve body, a valve seat and a cylinder barrel, wherein the balance valve body is arranged on the valve seat, and the valve seat is assembled on the cylinder barrel; two oil inlet channels are symmetrically arranged in the valve seat, two oil guide channels butted with the oil inlet channels are correspondingly arranged on the assembly surface of the cylinder barrel, sleeves aligned and connected with the two oil inlet channels are embedded in the bottom surface of the valve seat, and the lower parts of the two sleeves extend out of the valve seat; the center of the valve seat protrudes downwards to form a clamping block, and the bottom surface of the valve seat is respectively provided with a sealing gasket at the outer side of the two sleeves; the oil guide device is characterized in that positioning notches for embedding the sleeves are formed in the positions of the two oil guide channels in the cylinder barrel assembly surface, clamping grooves for embedding the clamping blocks are reserved between the two positioning notches, and sealing grooves for embedding the sealing gaskets are formed in the two sides of the top surface of each positioning notch.

Preferably, the inner side of the sealing gasket is abutted against the side face of the clamping block, and the outer side of the sealing gasket extends outwards to form a sealing wrapping edge wrapping the outer side face of the valve seat.

Preferably, the positioning notch, the clamping groove and the sealing groove are of an invagination structure and are communicated with each other.

Preferably, a circle of mounting lug plate is arranged on the outer side of the valve seat, and the mounting lug plate is welded with the assembling surface of the cylinder barrel in a sealing mode.

Preferably, the mounting ear plate is attached to the opposite surface of the sealing edge.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model can be butted with the oil guide channel of the cylinder barrel by connecting the sleeve at the oil inlet channel of the valve seat, so that the valve seat can be accurately butted with the oil duct of the cylinder barrel; meanwhile, the bottom surface of the valve seat is provided with a clamping block with a bulge embedded into the cylinder barrel, so that dislocation during assembly is avoided, oil flows smoothly, and interception cannot be formed; the embedded sealing gasket is arranged at the joint surface of the valve seat and the cylinder barrel, and the sealing edge coated on the outer side surface of the valve seat is formed at the periphery of the sealing gasket, so that the problem that high-pressure oil leaks into a contact gap between the valve seat and the cylinder barrel wall and further cracks a welding seam around the valve seat is solved, and the sealing performance is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the specific structure of the cylinder barrel of the present invention;

fig. 3 is a schematic view of the specific structure of the valve seat of the present invention.

In the figure: 1. a balance valve body; 2. a valve seat; 3. a cylinder barrel; 4. an oil inlet channel; 5. an oil guide channel; 6. A sleeve; 7. a clamping block; 8. a gasket; 9. sealing the edge; 10. a positioning notch; 11. a card slot; 12. A sealing groove; 13. and installing the ear plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a positioning connection structure of an oil cylinder valve seat comprises a balance valve body 1, a valve seat 2 and a cylinder barrel 3, wherein the balance valve body 1 is installed on the valve seat 2, and the valve seat 2 is assembled on the cylinder barrel 3; two oil inlet channels 4 are symmetrically arranged in the valve seat 2, two oil guide channels 5 butted with the oil inlet channels 4 are correspondingly arranged on the assembly surface of the cylinder barrel 3, a sleeve 6 aligned and connected with the two oil inlet channels 4 is embedded in the bottom surface of the valve seat 2, and the lower part of the two sleeve 6 extends out of the valve seat 2; the center of the valve seat 2 protrudes downwards to form a clamping block 7, and sealing gaskets 8 are respectively arranged on the outer sides of the two sleeves 6 on the bottom surface of the valve seat 2; the oil guide device is characterized in that positioning notches 10 for embedding the sleeve 6 are formed in the positions of the two oil guide channels 5 in the assembling surface of the cylinder barrel 3, a clamping groove 11 for embedding the clamping block 7 is reserved between the two positioning notches 10, and sealing grooves 12 for embedding the sealing gasket 8 are formed in the two sides of the top surface of each positioning notch 10.

Further, the inside edge of the sealing gasket 8 is abutted against the side surface of the clamping block 7, and the outside edge of the sealing gasket extends outwards to form a sealing wrapping edge 9 wrapping the outside surface of the valve seat 2.

Further, the positioning notch 10, the clamping groove 11 and the sealing groove 12 are all of an invagination structure, and the three are mutually communicated.

Furthermore, a circle of mounting lug plates 13 are arranged on the outer side of the valve seat 2, and the mounting lug plates 13 are welded with the assembling surface of the cylinder barrel 3 in a sealing mode.

Furthermore, the mounting ear plate 13 is attached to the opposite surface of the sealing edge 9.

The working principle is as follows: before the valve seat 2 is positioned and fixed on the cylinder barrel 3, counter bores are respectively processed at an oil inlet channel 4 on the bottom plane of the valve seat 2 and an oil guide channel 5 on the outer wall of the cylinder barrel 3, and a sleeve 6 is processed in advance and fixed in the counter bores of the valve seat 2; insert the location notch 10 of cylinder 3 with 6 lower extremes of sleeve during the butt joint, in the joint piece 7 embedding of 2 bottom surfaces of disk seat 3 assembly faces's of while draw-in groove 11, the sealed 8 synchronous embedding of 6 outlying of sleeve seal in the seal groove 12 of cylinder 3, later with disk seat 2 installation otic placode 13 all around weld firmly on cylinder 3 can, installation otic placode 13 welds the back and can compress tightly sealed 8 outlying sealed bordures 9 of filling up.

The sleeve 6 can enable the valve seat 2 to be accurately butted with an oil passage of the cylinder barrel 3; meanwhile, the oil pump is matched with the clamping block 7, so that dislocation during assembly is avoided, the oil flows smoothly, and interception is not formed; the joint face of the valve seat 2 and the cylinder barrel 3 is provided with an embedded sealing gasket 8, the periphery of the sealing gasket 8 forms a sealing wrapping edge 9 wrapping the outer side face of the valve seat 2, the problem that high-pressure oil leaks into a contact gap between the valve seat 2 and the side wall of the cylinder barrel 3 and then welding seams around the valve seat 2 are likely to be cracked is solved, and the sealing performance is high.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A positioning connection structure of an oil cylinder valve seat comprises a balance valve body (1), a valve seat (2) and a cylinder barrel (3), wherein the balance valve body (1) is installed on the valve seat (2), and the valve seat (2) is assembled on the cylinder barrel (3); the oil-gas separator is characterized in that two oil inlet channels (4) are symmetrically arranged in the valve seat (2), two oil guide channels (5) butted with the oil inlet channels (4) are correspondingly arranged on the assembly surface of the cylinder barrel (3), a sleeve (6) aligned and connected with the two oil inlet channels (4) is embedded in the bottom surface of the valve seat (2), and the lower parts of the two sleeves (6) extend out of the valve seat (2); the center of the valve seat (2) protrudes downwards to form a clamping block (7), and sealing gaskets (8) are respectively arranged on the outer sides of the two sleeves (6) on the bottom surface of the valve seat (2); the oil guide device is characterized in that positioning notches (10) for embedding the sleeve (6) are formed in the positions of the two oil guide channels (5) in the cylinder barrel (3) assembling surface, clamping grooves (11) for embedding the clamping blocks (7) are reserved between the two positioning notches (10), and sealing grooves (12) for embedding the sealing gaskets (8) are formed in the two sides of the top surface of each positioning notch (10).

2. The positioning and connecting structure of the oil cylinder valve seat as claimed in claim 1, wherein: the inner side of the sealing gasket (8) is abutted against the side surface of the clamping block (7), and the outer side of the sealing gasket extends outwards to form a sealing edge covering (9) covering the outer side surface of the valve seat (2).

3. The positioning and connecting structure of the oil cylinder valve seat as claimed in claim 1, wherein: the positioning notch (10), the clamping groove (11) and the sealing groove (12) are all of an invagination structure and are communicated with each other.

4. The positioning and connecting structure of the oil cylinder valve seat as claimed in claim 1, wherein: and a circle of mounting lug plate (13) is arranged on the outer side of the valve seat (2), and the mounting lug plate (13) is hermetically welded with the assembling surface of the cylinder barrel (3).

5. The positioning and connecting structure of the oil cylinder valve seat as claimed in claim 4, wherein: the opposite surfaces of the mounting ear plate (13) and the sealing wrapping edge (9) are mutually attached.