CN211202215U - A kind of manual pump protection structure - Google Patents

Abstract

The utility model provides a protective structure for a manual pump, comprising a rocker shaft, a pump body, a bearing, an O-ring and a dust-proof end cover; the O-ring is sleeved on the rocker shaft, and the rocker shaft Installed into the bearing, the bearing is pressed into the hole of the pump body; a dust-proof end cover is arranged between the pump body and the rocker assembly. The protection structure of the manual pump according to the utility model, without changing the existing overall structure, adds a dust-proof end cover with a horn-shaped metal skeleton structure to prevent particulate dust and harmful liquid from entering through the gap between the rocker shaft and the bearing. In the bearing, so as to protect the O-ring, increase the service life of the O-ring, and improve the reliability and life of the hand pump. The structure and manufacturing process are simple, the installation is convenient, and the protection effect is good.

Description

A kind of manual pump protection structure

technical field

The utility model relates to a cab hydraulic turning system, in particular to a manual pump protection structure.

Background technique

For the manual pump in the hydraulic turning system of the cab, the sealing structure at the rocker shaft mostly adopts the O-ring internal seal, and the end cover without protection function is used for axial positioning between the rocker shaft and the pump body. At present, the working environment of commercial vehicles is relatively harsh. In the working environment, particulate dust and harmful liquid will enter the bearing and the O-ring through the gap between the rocker shaft and the bearing. When the rocker shaft and the O-ring rotate, accelerate The wear and aging of the O-ring will affect the tightness of the O-ring seal, resulting in oil leakage or even failure of the manual pump. The manual pump leaks oil and needs to be stopped for maintenance. Special tools are required to disassemble the manual pump. After replacing the O-ring, the manual pump is reassembled. The maintenance workload is heavy, and the disassembly and assembly cleanliness requirements are high, which affects production and transportation.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a manual pump protection structure, which can effectively isolate particulate dust and harmful liquid, improve the adaptability of the manual pump to harsh environments, and prolong the service life of the manual pump.

In order to solve the above-mentioned technical problems, the technical scheme of the present invention is as follows: a manual pump protective structure, including a rocker shaft, a pump body, a bearing, an O-ring and a dust-proof end cover; the O-ring is sleeved on the rocker shaft , the rocker shaft is installed into the bearing, and the bearing is pressed into the hole of the pump body; a dust-proof end cover is arranged between the pump body and the rocker assembly. The utility model can effectively prevent particulate dust and harmful liquid from entering the inner hole of the bearing through the gap between the bearing and the rocker shaft by providing a dust-proof end cover between the pump body and the rocker assembly, and prolongs the use of the O-ring. life, and improve the reliability of the manual pump.

Improvements to the above technical solutions: the dust-proof end cover is a metal skeleton structure, and is horn-shaped, the lower end of the bell mouth is made of rubber material, which is closely attached to the pump body, and the upper end is closely attached to the rocker shaft shoulder and Bearing to achieve the function of axial fixation. In the dust-proof end cover of this structure, the diameter of the lip at the bell mouth is larger than the diameter of the outer circle of the bearing, so the pump body hole and the bearing are wrapped in the horn cavity, and the lip is tightly attached to the surface of the pump body to form an external seal , to prevent particulate dust and harmful liquid from entering the bearing through the clearance between the rocker shaft and the bearing.

Beneficial effects:

The protection structure of the manual pump according to the utility model, without changing the existing overall structure, adds a dust-proof end cover with a horn-shaped metal skeleton structure to prevent particulate dust and harmful liquid from entering through the gap between the rocker shaft and the bearing. In the bearing, so as to protect the O-ring, increase the service life of the O-ring, and improve the reliability and life of the hand pump. The structure and manufacturing process are simple, the installation is convenient, and the protection effect is good.

Description of drawings

Figure 1 is a sectional view of the original manual pump without protective structure.

FIG. 2 is a cross-sectional view of the protective structure of the manual pump of the present invention.

In the figure: 1—rocker shaft; 2—end cover; 3—bearing; 4—O-ring; 5—pump body; 6—dust cover. A - lips.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 2 , a manual pump protection structure related to the utility model includes a rocker shaft 1 , a bearing 3 , an O-ring 4 , a pump body 5 , and a dust-proof end cover 6 . The O-ring 4 is sleeved on the rocker arm shaft 1, and is installed into the bearing 3 along with the rocker arm shaft 1. The bearing 3 is press-fitted into the hole of the pump body 5. The lip A at the bell mouth of the dust end cover 6 is close to the pump body 1, which effectively prevents particulate dust and harmful liquid from entering the bearing through the gap between the rocker shaft and the bearing, thereby protecting the O-ring and increasing the service life of the O-ring. Improve hand pump reliability and life. The structure and manufacturing process are simple, the installation is convenient, and the protection effect is good.

Claims (2)

1. The utility model provides a hand pump protective structure, includes rocking arm axle, the pump body, its characterized in that: the device also comprises a bearing, an O-shaped ring and a dustproof end cover; the O-shaped ring is sleeved on the rocker shaft, the rocker shaft is arranged in the bearing, and the bearing is pressed into the pump body hole; and a dustproof end cover is arranged between the pump body and the rocker component.

2. A hand pump guard structure according to claim 1, characterised in that: the dustproof end cover is of a metal framework structure and is horn-shaped, the lower end bell mouth is made of rubber materials and tightly attached to the pump body, and the upper end of the dustproof end cover is tightly attached to a shaft shoulder of the rocker shaft and the bearing, so that axial fixation is realized.

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