CN203488618U

CN203488618U - Damper

Info

Publication number: CN203488618U
Application number: CN201320503777.0U
Authority: CN
Inventors: 杭林生
Original assignee: SUZHOU SHENGNENG MACHINERY CO Ltd
Current assignee: SUZHOU SHENGNENG MACHINERY CO Ltd
Priority date: 2013-08-19
Filing date: 2013-08-19
Publication date: 2014-03-19
Anticipated expiration: 2023-08-19

Abstract

The utility model discloses a damper comprising an internal pipe, an external pipe sleeved on the internal pipe, an oil chamber, an air chamber and a separating piston. The internal pipe is provided with a small hole; one end of the small hole faces a seal end bottom of the external pipe and is inserted in the external pipe via an opening end; the oil chamber and the air chamber are connected via the separating piston and arranged in the internal pipe; the air chamber comprises an external pipe connecting rod, an air chamber main piston and an air nozzle; the air chamber is communicated with outer environment via a mutual connection among a through hole, the external pipe connecting rod and the air nozzle; the oil chamber comprises an oil chamber piston and an oil pouring nozzle; the oil chamber is formed by the oil chamber piston, an internal pipe seal end without a through hole on the internal pipe and the internal pipe wall; and hydraulic oil is poured in the oil chamber. Impact is buffered via the air chamber and the oil chamber in the internal pipe; and with incompressibility of the hydraulic oil in the oil chamber, air chamber capacity is changed by changing space occupation of the oil chamber in the internal pipe via a change of volume of the hydraulic oil in the oil chamber, so effective stroke of the damper can be changed.

Description

A kind of shock absorber

Technical field

The utility model relates to a kind of shock absorber, belongs to hardware fitting field.

Background technique

Traditional shock-absorbing device, no matter be metal spring or gas spring formula, all exist cannot free adjustment stroke shortcoming, the general length that all needs the structure of more complicated or change shock-absorbing device axostylus axostyle, the length of the length of metal spring or gas spring air chamber tubing realizes the object that changes stroke, these methods are more complicated and to implement difficulty large all, and cost is high.

Model utility content

The purpose of this utility model is: a kind of technological scheme that can address the above problem is provided.

The utility model is realized by the following method:

A shock absorber, described shock absorber comprises the outer tube of mutual socket and inner tube, grease chamber, air chamber, partition piston;

Described outer tube is the stereoplasm tube of end opening one end sealing, described inner tube be closed at both ends wherein one end close mouth offer foraminate stereoplasm tube, described inner tube arrange foraminate one end outward duct occlusion bottom portion by opening end, be inserted in outer tube, described grease chamber, air chamber connect and are arranged on inner tube inside by cutting off piston;

Described air chamber comprises outer tube connecting rod, air chamber main piston, valve, described outer tube connecting rod is hollow tubular body, described outer tube one end is connected to outer tube closed end bottom, the described outer tube the other end is connected with the air chamber main piston that is arranged on inner tube inside through described aperture, on described air chamber main piston, be provided with through hole, described air chamber main piston, partition piston and inner tube wall form air chamber, and described air chamber is by described interconnected through hole, outer tube connecting rod and valve and environmental communication;

Described grease chamber comprises grease chamber's piston, pump nozzle, described grease chamber piston is fixedly connected with partition piston, described pump nozzle is arranged on the inner tube closed end that is not provided with through hole, inner tube closed end and inner tubal wall that described grease chamber piston and inner tube are not provided with through hole form grease chamber, in described grease chamber, are perfused with hydraulic oil;

As further innovation of the present utility model, described air chamber main piston, partition piston, grease chamber's piston are aluminum alloy material;

As further innovation of the present utility model, described grease chamber is inner, between inner tube closed end and grease chamber's piston, is provided with spring.

beneficial effect

1. the utility model is realized the buffering of impact by air chamber, grease chamber are set in inner tube inside, because the incompressibility of hydraulic oil in grease chamber, by changing the volume of hydraulic oil in grease chamber, change grease chamber and change air chamber capacity in the inner occupied space of inner tube, thereby reach the object that changes shock absorber effective travel.

2. the piston of the utility model by aluminum alloy replaces traditional plastic colloid piston and makes it to have larger durability.

When preventing hydraulic oil to pour into because the pressure of air chamber extrudes hydraulic oil rapidly from grease chamber, the utility model is provided with a negative pressure spring in grease chamber, come balance air chamber and open mode lower oil chamber pressure difference between the two, prevent the ejection of hydraulic oil.

Accompanying drawing explanation

Fig. 1 is structure diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, be described further

As shown in Figure 1, a kind of shock absorber, described shock absorber comprises the outer tube 8 of mutual socket and inner tube 9, grease chamber 1, air chamber 7, cuts off piston 4;

Described outer tube 8 is the stereoplasm tube of end opening one end sealing, described inner tube 9 for closed at both ends wherein one end close mouth offer foraminate stereoplasm tube, described inner tube 9 arranges foraminate one end and by opening end, is inserted in outer tube 8 towards outer tube 8 closed end bottoms, and described grease chamber 1, air chamber 7 are arranged on inner tube 9 inside by cutting off piston 4 connections;

Described air chamber 7 comprises outer tube 8 connecting rods 6, air chamber 7 main pistons 5, valve 10, described outer tube 8 connecting rods 6 are hollow tubular body, described outer tube 8 one end are connected to outer tube 8 closed end bottoms, described outer tube 8 the other ends are connected with air chamber 7 main pistons 5 that are arranged on inner tube 9 inside through described aperture, on described air chamber 7 main pistons 5, be provided with through hole, described air chamber 7 main pistons 5, partition piston 4 form air chambers 7 with inner tube 9 inwalls, and described air chamber 7 is by described interconnected through hole, outer tube 8 connecting rods 6 and valve 10 and environmental communication;

Described grease chamber 1 comprises grease chamber's piston 3, pump nozzle 2, described grease chamber piston 3 is fixedly connected with partition piston 4, described pump nozzle 2 is arranged on inner tube 9 closed ends that are not provided with through hole, described grease chamber piston 3 forms grease chamber 1 with inner tube 9 closed ends and inner tube 9 walls that inner tube 9 is not provided with through hole, in described grease chamber 1, is perfused with hydraulic oil;

1 inside, described grease chamber, is provided with spring between inner tube 9 closed ends and grease chamber's piston 3.

During use first according to inner tube effective length and inner tube width according to needed stroke perfusion liquid force feed in oil nozzle, sealed oiling mouth after perfusion, by valve, shock absorber is pressurizeed afterwards, air pressure is determined according to actual conditions, in inner tube, stretch out completely and reach after preset air pressure value, stop pressurization sealing valve, because the incompressibility of hydraulic oil in grease chamber, by changing the volume of hydraulic oil in grease chamber, change grease chamber and change air chamber capacity in the inner occupied space of inner tube, thereby reach the object that changes shock absorber effective travel.

Claims

1. a shock absorber, is characterized in that: described shock absorber comprises the outer tube of mutual socket and inner tube, grease chamber, air chamber, partition piston;

Described grease chamber comprises grease chamber's piston, pump nozzle, described grease chamber piston is fixedly connected with partition piston, described pump nozzle is arranged on the inner tube closed end that is not provided with through hole, inner tube closed end and inner tubal wall that described grease chamber piston and inner tube are not provided with through hole form grease chamber, in described grease chamber, are perfused with hydraulic oil.

2. a kind of shock absorber as claimed in claim 1, is characterized in that: described air chamber main piston, partition piston, grease chamber's piston are aluminum alloy material.

3. a kind of shock absorber as claimed in claim 1, is characterized in that: described grease chamber is inner, between inner tube closed end and grease chamber's piston, is provided with spring.