CN218266201U

CN218266201U - Swing variable adjusting structure based on variable plunger pump

Info

Publication number: CN218266201U
Application number: CN202222586831.4U
Authority: CN
Inventors: 常军平; 官柏平
Original assignee: Sks Hydraulic Technology Co ltd
Current assignee: Sks Hydraulic Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-01-10
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a swing variable regulating structure based on a variable plunger pump, which comprises a damping plunger, a damping ejector rod and a damping spring; the tail end face of the damping plunger is provided with a guide sliding hole in an extending mode along the axis, the damping spring is arranged in the guide sliding hole, the front end of the damping ejector rod extends into the guide sliding hole in a sliding mode to be matched with the damping spring in an elastic jacking mode, a disc spring is sleeved on the damping ejector rod and located on the outer side of the guide sliding hole, and the front end of the disc spring is elastically abutted to the tail end face of the damping plunger after the damping spring is compressed by the damping ejector rod for a certain distance. The utility model relates to a rationally, the assembly is simple, can adjust the swing angle of rocking through the total length that changes shock attenuation plunger and shock attenuation ejector pin, reaches the purpose of control whole pump discharge capacity size.

Description

Swing variable adjusting structure based on variable plunger pump

Technical Field

The utility model belongs to the technical field of the technique of variable plunger pump and specifically relates to a be applied to a variable regulation structure in the variable plunger pump, specifically speaking is a swing variable regulation structure based on variable plunger pump.

Background

The performance of the variable displacement piston pump is mainly determined by a control valve and a variable mechanism, a swing piece in the variable mechanism is the most core part, and variables are realized by changing the swing angle of the swing through a variable adjusting structure. The traditional variable adjusting structure is relatively complex, the processing cost is high, and the assembly difficulty is large.

Disclosure of Invention

The utility model aims to solve the technical problem to the current situation of above-mentioned prior art, and provide reasonable in design, assembly simple to low in manufacturing cost, adjust convenient a variable regulation structure sways based on variable plunger pump.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

a swing variable regulating structure based on a variable plunger pump comprises a damping plunger, a damping ejector rod and a damping spring; the tail end face of the damping plunger is provided with a guide sliding hole in an extending mode along the axis, the damping spring is arranged in the guide sliding hole, the front end of the damping ejector rod extends into the guide sliding hole in a sliding mode to be matched with the damping spring in an elastic jacking mode, a disc spring is sleeved on the damping ejector rod and located on the outer side of the guide sliding hole, and the front end of the disc spring is elastically abutted to the tail end face of the damping plunger after the damping spring is compressed by the damping ejector rod for a certain distance.

In order to optimize the technical scheme, the specific measures adopted further comprise:

and a lubricating oil hole communicated with the guide sliding hole is radially formed on the circumferential surface of the damping plunger.

The front end of the shock absorption plunger is provided with a plunger ball head which is used for being in rotating top connection and matching with a swinging ball socket.

The tail end of the damping ejector rod is provided with an ejector rod ball head which is used for being in rotating abutting joint with a ball socket on a pump rear cover.

The shock absorption ejector rod is provided with an ejector rod boss in a processing and forming mode, and the front end annular surface of the ejector rod boss is matched with the rear end of the disc spring in a pressing mode after the shock absorption spring is compressed for a distance by the shock absorption ejector rod.

Compared with the prior art, the utility model discloses a shake variable regulation structure that sways based on variable plunger pump

The damping device is formed by assembling four components, namely a damping plunger, a damping ejector rod, a damping spring and a disc spring, in total; the front end of the damping ejector rod is assembled with the guide sliding hole of the damping plunger in a sliding mode, the damping spring is elastically pressed in the guide sliding hole of the damping plunger through the damping ejector rod, and the disc spring is sleeved on the damping ejector rod. When the damping ejector rod is compressed, the damping spring can bear a part of pressure, and after the damping spring is compressed to a set distance, the pressure is born by the disc spring and the damping spring together, so that the pressure impact caused by swinging can be effectively reduced, the swinging variable process becomes gentle, and the vibration and noise of the pump during working are reduced. The utility model discloses a swing variable control structure assembly is simple, low in manufacturing cost, and it can change overall structure's length through the length that changes damping plunger, the length of shock attenuation ejector pin or the quantity that increases and decreases the dish spring, plays spacing swing angle's effect, reaches the purpose of controlling the size of whole pump discharge capacity.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic structural view of the damping spring of the present invention in a compressed state;

FIG. 3 is a cross-sectional view of the shock absorbing plunger of the present invention;

fig. 4 is a schematic view of a swing structure used in combination with the present invention.

Wherein: the figures are referenced by the numerals: the damping device comprises a ball socket W, a damping plunger 1, a guide sliding hole 1a, a lubricating oil hole 1b, a plunger ball 11, a damping ejector rod 2, an ejector rod ball 21, an ejector rod boss 22, a front end annular surface 22a, a damping spring 3, a disc spring 4 and a swing body 5.

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 to fig. 3, the utility model discloses a swing variable adjusting structure based on variable plunger pump

The swing variable adjusting structure is applied to a variable plunger pump, and can adjust the swing angle of a swing through the change of the total length, so as to control the displacement of the pump. The structure comprises a damping plunger piston 1, a damping ejector rod 2 and a damping spring 3. The damper plunger 1 is cylindrical, and a guide slide hole 1a is formed in the center of the rear end surface thereof so as to extend forward along the axial center line. The front end of the shock absorption mandril 2 extends into the guide sliding hole 1a in a sliding way, so that the shock absorption mandril 2 can slide along the guide of the guide sliding hole 1a. The front and back sliding of the damping ejector rod 2 can change the total length of the damping plunger piston 1 and the damping ejector rod 2, and the swinging angle of the swinging piston can be adjusted by changing the total length of the damping plunger piston 1 and the damping ejector rod 2, so that the displacement of the plunger pump is changed. Damping spring 3 is in damping spring 3's direction slide opening 1a through damping ejector pin 2 ground pressure dress, and damping spring 3 can provide pretension pressure for damping plunger 1 and damping ejector pin 2. The front end of the damping spring 3 is connected with the hole bottom of the guide sliding hole 1a in a propping mode, and the rear end of the damping spring 3 is matched with the front end face of the damping ejector rod 2 in an elastic propping mode. The damping ejector rod 2 is further sleeved with a disc spring 4, the disc spring 4 is located on the outer side of the guide sliding hole 1a, and the diameter of the disc spring 4 is larger than that of the guide sliding hole 1a. When the damper ram 2 moves forward, the damper springs 3 are compressed first, and only the damper springs 3 take up the pressure of the damper ram 2. When the damping ejector rod 2 continues to move forwards, the damping spring 3 is compressed for a certain distance, and the front end of the disc spring 4 can be elastically abutted with the tail end face of the damping plunger piston 1 under the pushing of the damping ejector rod 2. At this time, as shown in fig. 2, the pressure is born by the disc spring 4 and the damping spring 3, so that the pressure impact caused by the swing can be effectively reduced, the variable process of the swing becomes gentle, and the vibration and noise caused by the operation of the pump are reduced. The utility model discloses can change overall structure's length through the length that changes damping plunger 1, the length of shock attenuation ejector pin or the quantity that increases and decreases the dish spring, play spacing swing angle's effect, reach the purpose of controlling the size of the whole pump displacement.

In the embodiment, as shown in fig. 3, a lubricating oil hole 1b communicated with the guide sliding hole 1a is radially formed on the circumferential surface of the damping plunger 1. An appropriate amount of lubricating oil can be supplied into the guide sliding hole 1a through the lubricating oil hole 1b, thereby ensuring the smoothness of the sliding of the shock absorbing jack 2.

In the embodiment, the front end of the damping plunger 1 is processed with a plunger ball 11. The plunger ball 11 is a hemispherical structure. Fig. 4 is a view of the swing 5 of the present invention, and it can be seen from the figure that two ball sockets W are machined at a distance of 180 degrees in the circumferential direction of the swing 5. The utility model discloses during the assembly, only need with the plunger bulb 11 butt joint of shock attenuation plunger 1 with rotating in the ball socket W who sways 5 can.

In the embodiment, the tail end of the damping ejector rod 2 is provided with an ejector rod ball head 21, and the ejector rod ball head 21 is also of a hemispherical structure. During assembly, the tappet ball 21 of the damper tappet 2 is rotatably supported in a ball socket formed on the pump rear cover.

In the embodiment, the utility model discloses a processing and shaping has ejector pin boss 22 on the shock attenuation ejector pin 2, and the front end annular face 22a of ejector pin boss 22 cooperates with the rear end top pressure of dish spring 4 after damping spring 3 is compressed one section distance by shock attenuation ejector pin 2.

While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention.

Claims

1. A swing variable adjusting structure based on a variable plunger pump comprises a damping plunger (1), a damping ejector rod (2) and a damping spring (3); the method is characterized in that: the shock absorption plunger piston is characterized in that a guide sliding hole (1 a) is formed in the tail end face of the shock absorption plunger piston (1) in an extending mode along the axis, the shock absorption spring (3) is arranged in the guide sliding hole (1 a), the front end of the shock absorption ejector rod (2) extends into the guide sliding hole (1 a) in a sliding mode to be matched with the shock absorption spring (3) in an elastic jacking mode, a disc spring (4) is sleeved on the shock absorption ejector rod (2) and located on the outer side of the guide sliding hole (1 a), and the front end of the disc spring (4) is elastically abutted to the tail end face of the shock absorption plunger piston (1) after the shock absorption spring (3) is compressed by the shock absorption ejector rod (2) for a certain distance.

2. The rocking variable adjusting structure of the variable displacement piston pump according to claim 1, wherein: and a lubricating oil hole (1 b) communicated with the guide sliding hole (1 a) is radially formed in the circumferential surface of the damping plunger (1).

3. A rocking variable regulating structure based on a variable displacement piston pump as claimed in claim 2, wherein: the front end of the shock absorption plunger (1) is provided with a plunger ball head (11) which is used for being in rotating top connection and matching with a ball socket (W) of the swing (5).

4. The structure of claim 3, wherein the variable piston pump is characterized in that: and the tail end of the damping ejector rod (2) is provided with an ejector rod ball head (21) which is used for being in rotating abutting joint with a ball socket on a pump rear cover.

5. The structure of claim 4, wherein the variable piston pump is characterized in that: the shock absorption ejector rod (2) is provided with an ejector rod boss (22) in a processing mode, and a front end annular surface (22 a) of the ejector rod boss (22) is matched with the rear end of the disc spring (4) in a pressing mode after the shock absorption spring (3) is compressed for a distance by the shock absorption ejector rod (2).