CN217462510U

CN217462510U - Sliding block assembly

Info

Publication number: CN217462510U
Application number: CN202220975120.3U
Authority: CN
Inventors: 贺海涛; 赵亮亮; 陈仁建; 蔡宏年; 郑铠; 侯强; 杨勇; 石良希; 宋艳斌; 陈伟; 杨加平
Original assignee: Zhejiang Zhongmei Machinery Technology Co ltd; Shendong Coal Branch of China Shenhua Energy Co Ltd
Current assignee: Zhejiang Zhongmei Machinery Technology Co ltd; Shendong Coal Branch of China Shenhua Energy Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-09-20
Anticipated expiration: 2032-04-26

Abstract

A slider assembly characterized in that: the plunger joint is connected with the sliding block at one end and connected with the plunger after extending out of the sliding block cavity at the other end; a spherical gasket is arranged between the plunger joint and the sliding block. The scheme is adopted, the plunger joint is additionally arranged between the sliding block and the plunger, the spherical cushion block is arranged between the plunger joint and the sliding block, the axial angle deviation is adjusted by the spherical cushion block, the axial angle eccentricity of the plunger is offset by the plunger joint, and therefore the sealing of the plunger in the high-pressure cylinder sleeve and the axial movement of the sliding block in the sliding block cavity can be better guaranteed, and the service life of the emulsion pump station is further prolonged.

Description

Sliding block assembly

Technical Field

The utility model relates to an emulsion pump station technical field, concretely relates to sliding block set spare.

Background

The emulsion pump station is used for a hydraulic support for fully mechanized mining or a power device of a single hydraulic prop of a common mining working face. It is mainly composed of emulsion tank, emulsion pump set (two sets) and hydraulic control system.

The slide block in the crankcase of the emulsion pump makes linear reciprocating motion in the slide block cavity of the crankcase, has guiding function, connects the connecting rods making swinging motion in a hinge mode through the slide block, connects the plungers making reciprocating motion in a threaded mode, and plays a role in force transmission. Therefore, the sliding block has large movement amount, needs to bear large friction force in the working process, and has complex working environment under a mine, so that the sliding block needs high hardness, wear resistance, corrosion resistance, service life, high machining precision and the like.

As shown in fig. 4, for the sliding block assembly structure of the conventional emulsion pump, the sliding block is designed in an integral manner, and is connected with the connecting rod by a pin, and is connected with the plunger by a thread in rigid connection, because the plunger is connected with the sliding block in a hard manner, radial deviation and axial angle deviation can be avoided in the plunger assembling process, the conventional sliding block assembly can only solve the radial deviation through a plane pair between the plunger and the sliding block, and can not solve the axial angle deviation, the angle deviation can lead to eccentric wear of the plunger in a high-pressure cylinder sleeve, or the sliding block is eccentrically worn in a sliding block cavity, the phenomena of breakage of the connecting rod, pulling damage of a sliding way hole of a crankcase body and the like are seriously caused, so that the production under a mine is influenced, and great economic loss is caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of background art, the utility model provides a sliding block assembly.

The utility model discloses the technical scheme who adopts: a sliding block assembly comprises a sliding block, a connecting rod and a plunger, wherein the sliding block is arranged in a sliding block cavity of a crankcase in a sliding mode, and the connecting rod is hinged with the sliding block; the plunger joint is characterized by also comprising a plunger joint, wherein one end of the plunger joint is connected with the slide block, and the other end of the plunger joint extends out of the slide block cavity and is connected with the plunger; and a spherical gasket is arranged between the plunger joint and the sliding block.

The plunger joint is characterized in that a connecting hole is formed in the center of the rear end of the sliding block, a connecting boss protrudes from the center of the front end of the plunger joint, an external thread structure is formed outside the connecting boss, and the connecting boss is fixedly locked through a locking nut after penetrating through the connecting hole.

And a locking washer is arranged between the locking nut and the sliding block.

The front end face of the plunger joint is provided with a spherical groove around the connecting boss, one end of the spherical gasket, corresponding to the plunger joint, corresponds to a spherical shape, and the spherical gasket is embedded into the spherical groove and forms spherical fit with the plunger joint.

The front end face of the plunger is abutted against the rear end face of the plunger joint and is connected with the rear end face of the plunger joint through a stud at the central position.

And an oil inlet hole communicated with the sliding block cavity is formed in the crankcase, and an oil return hole is formed at the rear end of the sliding block.

The sealing device is characterized in that a sealing seat is installed at the rear end of a sliding block cavity of the crankcase, a first sealing ring and a second sealing ring are arranged between the sealing seat and the plunger joint, and an oil guide hole communicated with the sliding block cavity is formed in the position, corresponding to the position between the first sealing ring and the second sealing ring, of the sealing seat.

The utility model has the advantages that: the scheme is adopted, the plunger joint is additionally arranged between the sliding block and the plunger, the spherical cushion block is arranged between the plunger joint and the sliding block, the axial angle deviation is adjusted by the spherical cushion block, the axial angle eccentricity of the plunger is offset by the plunger joint, and therefore the sealing of the plunger in the high-pressure cylinder sleeve and the axial movement of the sliding block in the sliding block cavity can be better guaranteed, and the service life of the emulsion pump station is further prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the sliding block assembly according to an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a point a in fig. 1.

Fig. 3 is an enlarged schematic view of fig. 1 at B.

Fig. 4 is a schematic structural view of a conventional slider assembly in the prior art.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-3, a slider assembly includes a slider 1, a connecting rod 2, a plunger 3, a crankcase 4, a plunger joint 5, and a spherical washer 6.

A sliding block cavity is formed in the crank case 4, and the sliding block 1 is arranged in the sliding block cavity in a sliding mode and can slide back and forth along the sliding block cavity in a reciprocating mode.

The connecting rod 2 is connected with the sliding block 1 in a hinge mode, so that the sliding action of the sliding block 1 is linked with the swinging action of the connecting rod 2.

The front end of the plunger joint 5 is fixedly connected with the sliding block 1, and the rear end of the plunger joint extends out of the sliding block cavity and is connected with the plunger 3. Wherein, slider 1 rear end center is formed with connecting hole 11, the central protrusion of 5 front ends of plunger joint has connection boss 51, connection boss 51 is formed with the external screw thread structure outward, connect boss 51 and pass behind connecting hole 11, through the fixed locking of lock nut 7, the connected mode is simple, and the production equipment is very convenient.

Further, a lock washer 8 is further arranged between the lock nut 7 and the slider 1, the lock nut 7 and the connecting boss 51 are guaranteed to be locked with each other by the elastic abutting of the lock washer 8, the problem that the lock nut 7 and the connecting boss 51 are not flexible in the slider action is avoided, and the structure is more stable and reliable.

The front end face of the plunger joint 5 is provided with a spherical groove 52 around the connecting boss 51, the spherical washer 6 is sleeved on the connecting boss 51, the rear end of the spherical washer forms a spherical shape corresponding to the spherical groove 52, when the locking nut 7 locks the plunger joint, the front end of the spherical washer 6 keeps plane contact with the sliding block, and the rear end of the spherical washer is embedded into the spherical groove 52 and forms spherical fit with the plunger joint 5.

The rear end of the plunger joint 5 and the front end of the plunger 3 are both provided with central threaded holes, and the front end surface of the plunger 3 is abutted against the rear end surface of the plunger joint 5 and is connected with the rear end surface of the plunger joint through a stud 9 at the central position.

Scheme more than adopting, increase a plunger joint 5 between slider 1 and plunger 3, set up spherical cushion 6 between plunger joint 5 and the slider 1, utilize spherical cushion 6 to adjust axial angular deviation, 3 axial angle eccentricities of plunger are offset by plunger joint 5 to can guarantee the sealed of plunger 3 in high-pressure cylinder cover and the axial motion of slider 1 in the slider intracavity better, further increase emulsion pump station's life.

In addition, an oil inlet 41 communicated with the sliding block cavity is formed in the crankcase 4, an oil return hole 12 is formed in the rear end of the sliding block 1, circulation of lubricating oil in the sliding block cavity is guaranteed, reliable lubrication between the sliding block and the sliding block cavity is guaranteed, reciprocating motion of the sliding block in the sliding block cavity is further guaranteed, and the service life is prolonged.

Furthermore, a sealing seat 10 is installed at the rear end of a sliding block cavity of the crankcase 4, a first sealing ring 101 and a second sealing ring 102 are arranged between the sealing seat 10 and the plunger joint 5, an oil guide hole 103 communicated with the sliding block cavity is formed in the position, between the first sealing ring 101 and the second sealing ring 102, of the sealing seat 10, the lubricating oil can be further guided into the position between the first sealing ring 101 and the second sealing ring 102 through the oil guide hole 103, the lubricating effect between the plunger joint 5 and the sealing seat 10 is achieved, the plunger joint 5 is guaranteed to better slide in a reciprocating mode, and the service life is prolonged.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 as a specific case by those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should know that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. A sliding block assembly comprises a sliding block (1), a connecting rod (2) and a plunger (3), wherein the sliding block (1) is arranged in a sliding block cavity of a crankcase (4) in a sliding mode, and the connecting rod (2) is hinged to the sliding block (1);

the method is characterized in that: the plunger piston joint (5) is further included, one end of the plunger piston joint (5) is connected with the sliding block (1), and the other end of the plunger piston joint (5) extends out of the sliding block cavity to be connected with the plunger piston (3); and a spherical gasket (6) is arranged between the plunger joint (5) and the sliding block (1).

2. The slider assembly of claim 1, wherein: slider (1) rear end center is formed with connecting hole (11), plunger connects (5) front end center protrusion has connection boss (51), connection boss (51) are formed with the external screw thread structure outward, connect boss (51) and pass connecting hole (11) after, through lock nut (7) fixed locking.

3. The slider assembly of claim 2, wherein: and a check washer (8) is arranged between the locking nut (7) and the sliding block (1).

4. The slider assembly of claim 2, wherein: the front end face of the plunger joint (5) is provided with a spherical groove (52) around the connecting boss (51), one end of the spherical gasket (6) corresponding to the plunger joint (5) corresponds to a spherical shape, and the spherical gasket (6) is embedded into the spherical groove (52) and forms spherical fit with the plunger joint (5).

5. The slider assembly of claim 1 wherein: the front end surface of the plunger (3) is abutted against the rear end surface of the plunger joint (5) and is connected with the rear end surface of the plunger joint through a stud (9) at the central position.

6. The slider assembly of claim 1, wherein: an oil inlet hole (41) communicated with the sliding block cavity is formed in the crankcase (4), and an oil return hole (12) is formed in the rear end of the sliding block (1).

7. The slider assembly of claim 6, wherein: a sealing seat (10) is installed at the rear end of a sliding block cavity of the crankcase (4), a first sealing ring (101) and a second sealing ring (102) are arranged between the sealing seat (10) and the plunger joint (5), and an oil guide hole (103) communicated with the sliding block cavity is formed in the position, between the first sealing ring (101) and the second sealing ring (102), corresponding to the sealing seat (10).