阅读说明：本技术 一种带有均压槽的柱塞 (Plunger with pressure equalizing groove ) 是由 余红波 房世龙 丘伟平 陈满 张双红 于 2021-01-19 设计创作，主要内容包括：本发明公开了一种带有均压槽的柱塞,其特征在于,包括设置在缸体内部的柱塞零件一和设置在斜盘上的柱塞零件二,柱塞零件一和柱塞零件二连接,在柱塞零件一上设有与缸体连接第一凹槽,在柱塞零件二与斜盘连接处设有第二凹槽,在柱塞零件二与柱塞零件一连接处设有第二内腔,第二内腔与第二凹槽通过阻尼孔连接。本发明结构简单,加工便捷、自身稳定性好、造价成本低的柱塞结构,有效降低了液压马达(泵)在不同压力及转速的情况下,出现柱塞卡死导致液压马达(泵)失去工作能力的情况,使柱塞在各种压力和转速下能够平稳工作。(The invention discloses a plunger with a pressure equalizing groove, which is characterized by comprising a first plunger part arranged in a cylinder body and a second plunger part arranged on a swash plate, wherein the first plunger part is connected with the second plunger part, a first groove connected with the cylinder body is arranged on the first plunger part, a second groove is arranged at the joint of the second plunger part and the swash plate, a second inner cavity is arranged at the joint of the second plunger part and the first plunger part, and the second inner cavity is connected with the second groove through a damping hole. The plunger structure has the advantages of simple structure, convenient processing, good stability and low manufacturing cost, effectively reduces the situation that the hydraulic motor (pump) loses working capacity due to the fact that the plunger is blocked under the condition that the hydraulic motor (pump) is under different pressures and rotating speeds, and enables the plunger to work stably under various pressures and rotating speeds.)

1. The utility model provides a plunger with pressure-equalizing groove, a serial communication port, including setting up plunger part one (2) inside cylinder body (1) and plunger part two (3) of setting on sloping cam plate (4), plunger part one (2) and plunger part two (3) are connected, be equipped with on plunger part one (2) and be connected first recess (5) with cylinder body (1), be equipped with second recess (8) in plunger part two (3) and sloping cam plate (4) junction, be equipped with second inner chamber (7) in plunger part two (3) and plunger part one (2) junction, second inner chamber (7) are connected through damping hole (9) with second recess (8).

2. A plunger with pressure equalizing grooves as in claim 1, characterized in that the first plunger part (2) has inside it a first inner cavity (6) connected to the second cavity (7).

3. The plunger with the pressure equalizing groove as described in claim 1, wherein said first plunger part (2) is connected to said second plunger part (3) via a spherical surface.

4. The plunger with the pressure equalizing groove as claimed in claim 1, wherein a first groove (5) is formed on the outer side of the first plunger part (2), and the first groove (5) forms a closed space after being matched with the cylinder body (1).

Technical Field

The invention relates to a plunger with a pressure equalizing groove, belonging to the technical field of part structures of hydraulic motors (pumps).

Background

The plunger is an important component in the hydraulic motor, and is mainly used for conveying high-pressure and low-pressure fluid when the hydraulic motor (pump) works, and the volume of a sealing part of the plunger is changed through the reciprocating motion of the plunger in a cylinder body so as to realize oil absorption and oil pressing. The hydraulic motor (pump) loses working capacity due to the phenomenon of clamping caused by the problem of uneven stress during high-speed movement.

At present, a hydraulic motor (pump) on the market is basically of a cylindrical structure, hydraulic oil is difficult to enter due to the fact that the outer diameter of the hydraulic motor (pump) is ground smoothly, the lubricating effect is poor, and the structure is extremely prone to being clamped by serious inclination when the hydraulic motor (pump) reciprocates at high speed, so that the working capacity is lost.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: how to provide a simple structure, processing is convenient, self stability is good, the plunger structure of cost with low costs, makes it effectively solve hydraulic motor (pump) under the condition of different pressures and rotational speed, appears the plunger card and dies the condition that leads to hydraulic motor (pump) to lose the operating capability, makes the plunger can steady operation under various pressures and rotational speed.

In order to solve the technical problem, the technical scheme of the invention is to provide a plunger with a pressure equalizing groove, which is characterized by comprising a first plunger part arranged in a cylinder body and a second plunger part arranged on a swash plate, wherein the first plunger part is connected with the second plunger part, a first groove connected with the cylinder body is arranged on the first plunger part, a second groove is arranged at the joint of the second plunger part and the swash plate, a second inner cavity is arranged at the joint of the second plunger part and the first plunger part, and the second inner cavity is connected with the second groove through a damping hole.

Preferably, a first inner cavity connected with the second cavity is formed in the plunger part.

Preferably, the first plunger part is connected with the second plunger part through a spherical surface.

Preferably, a first groove is formed in one outer side of the plunger part, and a closed space is formed after the first groove is matched with the cylinder body.

The structure has the advantages of simple structure, few grinding parts, easy processing, good self-lubricating property, stable performance and low cost, and the structure ensures that a sealed groove space formed by the matching relationship between the cylinder body and the plunger is used for storing hydraulic oil, plays a role in lubricating the outer side of the plunger when the plunger reciprocates, ensures that a high-pressure hydraulic oil belt is stored in the groove, keeps the plunger in a plunger hole, automatically aligns and prevents the plunger from being easily clamped. This structure improves the reliability of hydraulic motor (pump) product, and the faster rotational speed of adaptation that can be better and great pressure make it can the steady operation, reduce the plunger card and die, improve life.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, the plunger with the pressure equalizing groove is characterized by comprising a first plunger part 2 arranged inside a cylinder body 1 and a second plunger part 3 arranged on a swash plate 4, wherein the first plunger part 2 is connected with the second plunger part 3, a first groove 5 connected with the cylinder body 1 is arranged on the first plunger part 2, a second groove 8 is arranged at the joint of the second plunger part 3 and the swash plate 4, a second inner cavity 7 is arranged at the joint of the second plunger part 3 and the first plunger part 2, the second inner cavity 7 is connected with the second groove 8 through a damping hole 9, and a first inner cavity 6 connected with the second cavity 7 is arranged inside the first plunger part 2. Plunger part one 2 and plunger part two 3 pass through the sphere and be connected, plunger part one 2 the outside be equipped with first recess 5, first recess 5 forms airtight space after cooperating with cylinder body 1.

The plunger structure has the advantages of simple structure, convenient processing, good stability and low manufacturing cost, effectively reduces the situation that the hydraulic motor (pump) loses working capacity due to the fact that the plunger is blocked under the condition that the hydraulic motor (pump) is under different pressures and rotating speeds, and enables the plunger to work stably under various pressures and rotating speeds.