CN2265450Y

CN2265450Y - Double-layer adjustable single direction damping hydro-cylinder

Info

Publication number: CN2265450Y
Application number: CN 96237312
Authority: CN
Inventors: 杨刚; 刘小安; 黄程辉; 宁成
Original assignee: YONGKENG MACHINERY CO Ltd SHUNDE CITY
Current assignee: YONGKENG MACHINERY CO Ltd SHUNDE CITY
Priority date: 1996-08-08
Filing date: 1996-08-08
Publication date: 1997-10-22
Anticipated expiration: 2006-08-08

Abstract

The utility model relates to a double-layer adjustable single direction damping hydro-cylinder. Bottom valves are arranged on one end of the double-layer casing; a piston rod and one-way valves which are arranged on the piston rod are inserted into the inner layer of the casing; a throttle valve seat, a rotary body and a sealed body are sheathed on the piston rod successively from the inside to the outside and are fixed to the other end of the casing; the throttle valve seat and the rotary body are rotated correspondingly, and the size of the channel between the throttle valve seat and the rotary body is adjustable. The double-layer adjustable single direction damping hydro-cylinder solves the problem of the prior art that special tools are needed to adjust the resistance force, which is inconvenient in use. The adjusting means of the utility model is simple; stepless resistance force adjusting or resistance force adjusting with step can be carried out only by rotating the rotary body, and the double-layer adjustable single direction damping hydro-cylinder is suitable for body building and physical training.

Description

Double-deck adjustable unidirectional damping oil cylinder

The utility model belongs to a kind of body-building and physical training apparatus, is a kind of device that uses oil to make resistance.

A kind of damping oil cylinder of adjustable resistance is provided in the prior art 91216659, it is provided with a cone shape hole, control the flow of oil by the degree of depth of regulating and controlling screw in cone shape hole, this oil cylinder needs to come adjusting screw with the instrument of special use, the degree of depth of adjusting screw need be established pressure monitor again and be observed, thereby use is inconvenient, structure complicated.

The purpose of this utility model is, but a kind of damping oil cylinder that does not use other instrument regulated at will resistance sizes of design.

The utility model housing is double-deck, the bottom valve of housing one end is communicated with the internal and external layer of housing, piston rod and the one-way valve that is installed in piston rod one end insert in the internal layer of housing, throttle valve seat, solid of rotation, seal are enclosed within on the piston rod from inside to outside successively and are fixed on the other end of housing, the internal and external layer of the channel connection housing that forms between throttle valve seat and the solid of rotation, throttle valve seat and solid of rotation relatively rotate the size of the above-mentioned passage of can regulate, promptly regulate oil mass, reach the purpose of regulating resistance.

Annular chute is arranged on the throttle valve seat, change from shallow to deep, little oilhole is arranged facing to annular chute on the solid of rotation, the solid of rotation rotation changes little oilhole in annular chute top position, promptly changes the channel sized of oil, has just regulated resistance.

The utility model regulative mode is simple, as long as the turn solid of rotation, can the step-less adjustment resistance, and if rotate, be exactly that the utmost point is regulated resistance so by the sign on the knob of solid of rotation outside.The utility model has also increased parts such as oil sealing, pad and spring between solid of rotation and seal, can prevent leakage of oil, prolongs the working life of product.Adjustable resistance when piston rod of the present utility model is outwards pulled out is not regulated resistance when inwardly being pressed into, move in circles, and is suitable for body-building and athletic training.

Fig. 1: example structure schematic representation

Fig. 2: oil sealing internal structure schematic representation

Fig. 3: a rotating body bilge construction schematic representation

Fig. 4: the K among Fig. 3 is to view

Fig. 5: throttle valve seat plan view

Fig. 6: C-C sectional view among Fig. 5

Present embodiment is a double-deck cylindrical body of being made up of shell 9 and inner casing 10, bottom valve 12 is installed in a cylindrical end and is connected shell 9 and inner casing 10 with some slits by passage 13, piston rod 1 and the one-way valve 11 that is installed in piston rod 1 one ends insert in the inner casings 10, and throttle valve seat 8, solid of rotation 7, seal 3 outwards are enclosed within on the piston rod 1 successively and are fixed on the cylindrical the other end from the lining; Be connected in the movable coupling mode between solid of rotation 7 and the seal 3; Throttle valve seat 8 is connected shell 9 and inner casing 10 with passage 16 between the solid of rotation 7, annular chute 14 is arranged on the throttle valve seat 8, change from shallow to deep from A point to B point, little oilhole 15 is arranged facing to annular chute 14 on the solid of rotation 7, solid of rotation 7 rotations can change little oilhole 15 in annular chute 14 top positions, make oil duct become big or diminish, promptly regulated resistance.For prolonging this life of product, guarantee sealing effect, improve the quality of products, oil sealing 4, pad 5 and spring 6 are housed between solid of rotation 7 and seal 3 successively, when guaranteeing that solid of rotation 7 and seal 3 rotate at the same time, can closely connect again, oil-proof; Oil sealing 4 adopts special construction, and its endoporus is provided with multiple-sealed ring 17, prevents leakage of oil better.Seal 3 outer rings also are fixed with knob 2, on the knob 2 scale are arranged, the relative position of indication solid of rotation 7.

With reference to Fig. 1: the one-way valve 11 that is installed on the piston rod 1 is divided into left chamber 19 and right chamber 18 with inner casing 10, forms interlayer 20 between shell 9 and the inner casing 10, and 11 on one-way valve fills to be permitted oil and flow to left chamber 19 from right chamber 18; When piston rod 1 spurs left, one-way valve 11 also is moved to the left with it, oil in the at this moment left chamber 19 is under the pressure of one-way valve 11, can only be by the axial straight trough 21 on the throttle valve seat 8, little oilhole 15, annular chute 14, passage 16, flow to interlayer 20, passage on bottom valve 12 13 again, get back in the right chamber 18, if regulating piston bar 1 pulling force left, rotary knob 2 driven rotary bodies 7 and seal 3 rotate simultaneously, change little oilhole 15 and just can achieve the goal in annular chute 14 top positions, and little oilhole 15 is during facing to the darker position of annular chute 14, resistance is just little, little oilhole 15 is during facing to the more shallow position of annular chute 14, and resistance is just big, realizes electrodeless adjusting, scale on the contrast knob 2 is regulated, and realizes having the utmost point to regulate; When piston rod 1 is pressed into to the right, one-way valve 11 also moves right with it, oil in the right chamber 18 flows in the left chamber 19 by one-way valve 11, because left chamber 19 is littler than right chamber 18 volumes, under the pressure of one-way valve 11, unnecessary oil is got back in the interlayer 20 by some slits on the bottom valve 12, this moment, left chamber 19 interior oil did not have pressure, fluid does not flow out by throttle valve seat 8 substantially, and throttle valve seat 8 is ineffective, and is identical with other unidirectional damping oil cylinders.

Claims

1. adjustable unidirectional damping oil cylinder of bilayer, the housing that a bilayer is arranged, the bottom valve of housing one end is communicated with the internal and external layer of housing, piston rod and the one-way valve that is installed in piston rod one end insert in the internal layer of housing, it is characterized in that: throttle valve seat, solid of rotation, seal are enclosed within on the piston rod from inside to outside successively and are fixed on the other end of housing, the internal and external layer of the channel connection housing that forms between throttle valve seat and the solid of rotation, throttle valve seat and solid of rotation relatively rotate the size of the above-mentioned passage of can regulate.

2. the adjustable unidirectional damping oil cylinder of bilayer according to claim 1, it is characterized in that: annular chute is arranged on the throttle valve seat, change from shallow to deep, little oilhole is arranged on the solid of rotation facing to annular chute, the solid of rotation rotation changes little oilhole in annular chute top position, promptly changes the channel sized of oil.

3. the adjustable unidirectional damping oil cylinder of bilayer according to claim 1 and 2 is characterized in that: seal is connected in the movable coupling mode with solid of rotation, and oil sealing, pad and spring are housed between them successively.

4. the adjustable unidirectional damping oil cylinder of bilayer according to claim 3, it is characterized in that: the oil sealing endoporus is provided with multiple-sealed ring.

5. the adjustable unidirectional damping oil cylinder of bilayer according to claim 1, it is characterized in that: the seal outer ring also is fixed with knob.

6. the adjustable unidirectional damping oil cylinder of bilayer according to claim 3, it is characterized in that: the seal outer ring also is fixed with knob.