CN206129779U

CN206129779U - Hydraulic pressure stick

Info

Publication number: CN206129779U
Application number: CN201621145858.8U
Authority: CN
Inventors: 吴海钦
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-10-21
Filing date: 2016-10-21
Publication date: 2017-04-26
Anticipated expiration: 2026-10-21

Abstract

The utility model provides a hydraulic pressure stick, including cylinder, main shaft, main spring, piston and control valve, hydraulic oil is equipped with in the cylinder, the piston set up in the inside of cylinder, and this piston will the internal partitioning of cylinder is first cavity and second cavity, the piston with the main shaft is connected, the control valve includes the case, the piston is equipped with the intercommunication first cavity with the passageway of second cavity, the case set up in in the passageway, the one end of main spring with the piston is connected, the other end fixed connection of main spring in raising and lowering functions can be realized to the inner wall of cylinder, and working process safe and reliable.

Description

A kind of hydraulic bar

Technical field

This utility model is related to a kind of hydraulic bar.

Background technology

It is existing rotate chair lift elevating function be by using the lowering or hoisting gear of mechanical type, hydraulic type and vapour-pressure type come Realize, the utilization of wherein Pneumatic lifting device is the most extensive.However, Pneumatic lifting device is relatively low due to filling out charging purity, Often there is explosion phenomenon, to user great potential safety hazard brought in excessively high etc. reason of use environment temperature and usage frequency, Jing.

The content of the invention

To solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of hydraulic bar, and the hydraulic bar can lead to The hand-operated lifting function of swivel chair is realized in the flowing for crossing hydraulic oil, simple to operate and safe and reliable.

Based on this, the utility model proposes a kind of hydraulic bar, including cylinder barrel, main shaft, main spring, piston and control valve, Built with hydraulic oil, the piston is arranged at the inside of the cylinder barrel to the cylinder barrel, and the piston is by the interior part of the cylinder barrel First chamber and second chamber are divided into, the piston is connected with the main shaft, the control valve includes valve element, and the piston sets There is the passage for connecting the first chamber and the second chamber, the valve element is arranged at the passage, the main spring One end is connected with the piston, and the other end of the main spring is fixedly connected on the inwall of the cylinder barrel.

Optionally, the control valve includes valve element push rod, and the main shaft is provided with cavity, and the valve element push rod is located at the sky In chamber, and one end of the valve element push rod is connected with the valve element, and the other end of the valve element push rod passes the cavity.

Optionally, the valve element includes valve core base and valve element post, one end of the valve element post and the valve element push rod phase Connection, the other end of the valve element post is connected with the valve core base, and the valve core base is arranged in the piston.

Optionally, it is socketed with the valve element post on valve core spring, and the valve element post and valve element jump ring, the valve is installed One end of core spring is connected with the valve element jump ring, and the other end of the valve core spring is connected with the piston.

Optionally, the outer wall of the valve element post is provided with valve core seal ring.

Further, the hydraulic bar also includes bearing, and the main shaft is rotatable with the piston by the bearing Connection, and the bearing is installed on the piston, the main shaft is connected with the bearing.

Optionally, bearing snap spring is installed, the main shaft is connected with main shaft jump ring, and the bearing is installed on the piston Between the bearing snap spring and the main shaft jump ring.

Optionally, the cylinder barrel includes end cap and cylinder, and the end cap is fixedly connected with the cylinder.

Further, be provided with the end cap it is some to check valve, each pair check valve include the first check valve and Second check valve, first check valve is contrary with the second check valve control direction.

Optionally, the spindle jacket is connected to limit for height spacer, and the limit for height spacer is located at the end cap and the piston top Between portion.

Implement this utility model embodiment, have the advantages that：

Hydraulic bar of the present utility model includes cylinder barrel, main shaft, main spring, piston and control valve, and the built-in hydraulic oil of cylinder barrel is former Material is simple, and cost is relatively low；Piston is arranged at the inside of cylinder barrel, and cylinder barrel internal chamber is divided into into first chamber and second chamber, The passage of first chamber and second chamber is communicated with piston, the valve element for controlling valve is arranged in passage, control valve passes through valve Core push rod promotes valve element to open piston channel, and when main shaft is moved downward by external force pressure, hydraulic oil can be flowed by passage, The function that swivel chair is lifted is realized, process is simple and safe；The valve element column outer wall of valve element is provided with valve core seal ring, can Strengthen sealing effectiveness of the valve element in motor process, between valve element and valve element chamber, it is ensured that the reliability of valve element work；Cylinder barrel It is provided with some to check valve on end cap, each pair check valve includes the contrary check valve of two control directions, can Balance Air Pressure, can prevent hydraulic oil from leaking, so as to ensure the reliability of the hydraulic bar course of work again.

Description of the drawings

Fig. 1 is the cross-sectional view of the hydraulic bar described in the present embodiment；

Fig. 2 is the enlarged diagram in Fig. 1 at A.

Description of reference numerals：

11st, cylinder, 12, end cap, the 121, first check valve, the 122, second check valve, 123, screw, 13, first chamber, 14th, second chamber, 2, main shaft, 22, limit for height spacer, 23, main shaft jump ring, 3, main spring, 4, piston, 41, piston packing, 51, Valve core base, 52, valve element post, 53, valve element push rod, 531, valve element push rod sealing ring, 54, valve core spring, 55, valve element jump ring, 56, Valve core seal ring, 6, bearing, 61, bearing snap spring.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of this utility model protection.

In description of the present utility model, it is to be understood that term " on ", the orientation of the instruction such as D score or position relationship It is, based on orientation shown in the drawings or position relationship, to be for only for ease of description this utility model and simplify description, rather than refers to Show or imply that the device or element of indication with specific orientation, with specific azimuth configuration and operation, therefore must can not be managed Solution is to restriction of the present utility model.

Referring to Fig. 1 and Fig. 2, the hydraulic bar of this preferred embodiment includes cylinder barrel, main shaft 2, main spring 3, piston 4 and control Valve, cylinder barrel includes cylinder 11 and end cap 12, and end cap 12 is fixedly connected on the tube port position of cylinder 11 by screw 123, forms this reality Apply the working chamber of the hydraulic bar described in example；Piston 4 is arranged at the inside of cylinder 11, and the inside of cylinder 11 is divided into into first chamber 13 and second chamber 14, using the teaching of the invention it is possible to provide the flowing space of hydraulic oil；Piston 4 is communicated with first chamber 13 and second chamber 14 Passage, control valve includes valve element and valve element push rod 53, and valve element is arranged in passage, can control opening for running of hydraulic power oil passage Close, make hydraulic oil flow up and down；The outer wall of piston 4 is provided with piston packing 41, can strengthen piston 4 in sliding process, The sealing effectiveness of first chamber 13 and second chamber 14, it is ensured that the reliability of the motion of piston 4, piston 4 is connected with main shaft 2, and Main shaft 2 is provided with cavity, and valve element push rod 53 is arranged in cavity, and one end of valve element push rod 53 is connected with valve element, and the other end is passed Cavity, when one end stress that valve element push rod 53 passes cavity is pushed, the other end of valve element push rod 53 promotes valve core movement extremely to beat Open walk, enables hydraulic oil to flow between first chamber 13 and second chamber 14, when main shaft 2 receive external force pressure when, piston 4 to Lower motion, hydraulic oil is flowed up by passage；The outer wall of valve element push rod 53 is provided with valve element push rod sealing ring 531, Neng Goufang Only hydraulic oil outwards sprays.

Valve element includes valve core base 51 and valve element post 52, and valve core base 51 is arranged in piston 4, and one end of valve element post 52 connects Valve core base 51 is connect, other end connection valve element push rod 53, valve element push rod 53 promotes valve element post 52 to drive valve core base 51 to move；It is main One end of spring 3 is connected with piston 4, and the other end is fixedly connected with the inwall of cylinder 11, can be when without external force pressure, there is provided living Fill in the power of 4 resiliences；It is socketed with valve element post 52 on valve core spring 54, and valve element post 52 and valve element jump ring 55, Neng Goufang is installed Just the connection of valve core spring 54 and valve element post 52；One end of valve core spring 54 connects valve element jump ring 55, and the other end connects piston 4, Valve core spring 54 can actively lift valve element when without external force pressure valve element push rod 53, so as to the valve element in closure piston 4 leads to Road, makes whole device keep balance；The outer wall of valve element post 52 is provided with valve core seal ring 56, can strengthen valve core movement process In, the sealing effectiveness between valve element and cavity, it is ensured that the reliability of hydraulic bar function.

The hydraulic bar of this preferred embodiment also includes bearing 6, and bearing 6 is installed on piston 4, and main shaft 2 is connected with bearing 6, Main shaft 2 is rotatably connected by bearing 6 with piston 4, and bearing snap spring 61 is provided with piston 4, and main shaft card is connected with main shaft 2 Spring 23, bearing 6 is installed between bearing snap spring 61 and main shaft jump ring 23, ensure that the reliability that main shaft 2 is connected with piston 4, Guarantee the motion between main shaft 2 and piston 4；Limit for height spacer 22 is socketed with outside main shaft 2, limit for height spacer 22 is located at the top of piston 4 Between end cap 12, ensure that piston 4 does not directly knock end cap 12 in uphill process, it is also empty for the reserved buffering of upper and lower stroke Between, prevent hydraulic oil from spraying or the situation of negative pressure moment increase occurs；It is provided with some to check valve on end cap 12, each pair is unidirectional Valve includes the first check valve 121 and the second check valve 122, the control direction phase of the first check valve 121 and the second check valve 122 Instead, equilibrium air pressure can be played a part of and prevents hydraulic oil from leaking.

It should be appreciated that various information are described in this utility model using term " first ", " second " etc., but these Information should not necessarily be limited by these terms, and these terms are only used for that same type of information is distinguished from each other out.For example, without departing from this In the case of utility model scope, " first " information can also be referred to as " second " information, similar, and " second " information can also It is referred to as " first " information.

The course of work of hydraulic bar of the present utility model is：Receive one end that valve element push rod 53 is passed from the cavity of main shaft 2 When moving downward to external force pressure, the valve element in piston 4 is promoted also to move downward, the valve core channel in piston 4 is opened, the first chamber Room 13 connects with second chamber 14, and hydraulic oil can flow in the presence of external force, when main shaft 2 is pressed downward by external force, hydraulic pressure Oil is flowed in second chamber 14 from first chamber 13, and when main shaft 2 is without external force pressure, main spring 3 promotes main shaft to move upwards, liquid Force feed flows into the 3rd chamber 13 from second chamber 14；When without external force pressure valve element push rod 53, valve core spring 54 being capable of poppet Core, so as to close valve core channel, hydraulic oil does not flow, and makes first chamber 13 keep balance with second chamber 14.

The above is preferred implementation of the present utility model, it is noted that for the ordinary skill of the art For personnel, on the premise of without departing from this utility model principle, some improvement and deformation can also be made, these improve and become Shape is also considered as protection domain of the present utility model.

Claims

1. a kind of hydraulic bar, it is characterised in that including cylinder barrel, main shaft, main spring, piston and control valve, the cylinder barrel built with Hydraulic oil, the piston is arranged at the inside of the cylinder barrel, and the piston by the inside of the cylinder barrel be divided into first chamber and Second chamber, the piston is connected with the main shaft, and the control valve includes valve element, and the piston is communicated with described first The passage of chamber and the second chamber, the valve element is arranged at the passage, one end of the main spring and the piston It is connected, the other end of the main spring is fixedly connected on the inwall of the cylinder barrel.

2. hydraulic bar according to claim 1, it is characterised in that the control valve includes valve element push rod, the main shaft sets There is cavity, the valve element push rod is in the cavity, and one end of the valve element push rod is connected with the valve element, the valve The other end of core push rod passes the cavity.

3. hydraulic bar according to claim 2, it is characterised in that the valve element includes valve core base and valve element post, described One end of valve element post is connected with the valve element push rod, and the other end of the valve element post is connected with the valve core base, described Valve core base is arranged in the piston.

4. hydraulic bar according to claim 3, it is characterised in that be socketed with valve core spring on the valve element post, and it is described Valve element jump ring is installed, one end of the valve core spring is connected with the valve element jump ring, the valve core spring on valve element post The other end is connected with the piston.

5. hydraulic bar according to claim 4, it is characterised in that the outer wall of the valve element post is provided with valve core seal ring.

6. hydraulic bar according to claim 1, it is characterised in that also including bearing, the main shaft by the bearing with The piston rotatably connects, and the bearing is installed on the piston, and the main shaft is connected with the bearing.

7. hydraulic bar according to claim 6, it is characterised in that bearing snap spring, the main shaft are provided with the piston Main shaft jump ring is connected with, the bearing is installed between the bearing snap spring and the main shaft jump ring.

8. the hydraulic bar according to any one of claim 1 to 7, it is characterised in that the cylinder barrel includes end cap and cylinder, institute State end cap to be fixedly connected with the cylinder.

9. hydraulic bar according to claim 8, it is characterised in that be provided with the end cap it is some to check valve, it is described Each pair check valve includes the first check valve and the second check valve, first check valve and the second check valve control direction phase Instead.

10. hydraulic bar according to claim 9, it is characterised in that the spindle jacket is connected to limit for height spacer, the limit for height Spacer is located between the end cap and the top land.