CN202592803U - Pressure-leaking over travel protection device of hydraulic machine - Google Patents

Pressure-leaking over travel protection device of hydraulic machine Download PDF

Info

Publication number
CN202592803U
CN202592803U CN 201220240238 CN201220240238U CN202592803U CN 202592803 U CN202592803 U CN 202592803U CN 201220240238 CN201220240238 CN 201220240238 CN 201220240238 U CN201220240238 U CN 201220240238U CN 202592803 U CN202592803 U CN 202592803U
Authority
CN
China
Prior art keywords
hydraulic
pressure
cylinder
piston rod
fluid port
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220240238
Other languages
Chinese (zh)
Inventor
谢广玉
陈春明
黄斌香
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XUZHOU PRESS SYSTEM CO Ltd
Original Assignee
XUZHOU PRESS SYSTEM CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by XUZHOU PRESS SYSTEM CO Ltd filed Critical XUZHOU PRESS SYSTEM CO Ltd
Priority to CN 201220240238 priority Critical patent/CN202592803U/en
Application granted granted Critical
Publication of CN202592803U publication Critical patent/CN202592803U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a hydraulic machine and particularly relates to a pressure-leaking over travel protection device of a hydraulic machine, which is suitable for safety protection when the large-sized hydraulic machine has the over travel and belongs to the field of hydraulic control of machinery manufacturing. The device comprises a cylinder body and the cylinder body is internally provided with a piston rod; a spring is sleeved at the lower part of the piston rod; guide sleeves are respectively mounted at the two ends of the cylinder body and the piston rod and are fixed on the cylinder body through a pressing nut; and the cylinder body is further respectively provided with an oil opening A connected with a pressure oil path of a hydraulic executing element and an oil opening B connected with an oil tank. The hydraulic pressure-leaking device is fixedly arranged at a slide block over travel protection device; when a slide block has the over travel, the slide rod presses down the piston rod and the piston rod moves downwards for a certain distance; the oil opening A (a pressure oil opening of a hydraulic system) is communicated with the oil opening B (a pressure leaking opening) so that the pressure of a hydraulic control system is zero at the moment; and the slide block loses power and falls down onto a safety bolt or a rigid supporting cushion block, so that equipment is not damaged.

Description

A kind of hydraulic press pressure release overtravel protection device
Technical field
The utility model relates to a kind of hydraulic press, is specifically related to a kind of hydraulic press pressure release overtravel protection device, is applicable to the safeguard protection of large hydraulic press excess of stroke hydraulic system, belongs to machine-building hydraulic control field.
Background technology
At present, the mechanical systems that adopt are carried out overtravel protection to the press motion slide block more in the hydraulic press safeguard protection, like safety cock, non-yielding prop cushion block etc.; To great tonnage press when the unexpected excess of stroke of slide block; Tend to cause safety cock is cut off, rigidity is propped up cushion block with security incidents such as the slide block working surface damage by pressure, especially for great tonnage press; The safety cock of overtravel protection and non-yielding prop cushion block structure are all huger, give and install, use, keep in repair and brought very big difficulty.
Summary of the invention
The purpose of the utility model is for overcoming the weak point of above-mentioned prior art, a kind of hydraulic press pressure release overtravel protection device is provided, and this device includes cylinder body, and piston rod is arranged in the cylinder body, and the bottom of piston rod is with spring; The two ends of described cylinder body and piston rod are separately installed with guide pin bushing, are fixed on the cylinder body through clamp nut; Also be respectively arranged with A hydraulic fluid port that is connected with the pressure oil circuit of hydraulic actuator and the B hydraulic fluid port that is connected with fuel tank on the described cylinder body.The hydraulic pressure releasing device is fixed on motion slide block overtravel protection position, and when the slide block excess of stroke, slide block is depressed piston rod; Piston rod moves down a bit of distance; A hydraulic fluid port (hydraulic system pressure hydraulic fluid port) and B hydraulic fluid port (pressure relief opening) are connected, and making hydraulic control system pressure moment is zero, and slide block runs out of steam; Fall on safety cock or the non-yielding prop cushion block, can not damage equipment.
The utility model is a kind of hydraulic press pressure release overtravel protection device of realizing through following technical scheme, and it is characterized in that: described protective device includes cylinder body, and piston rod is arranged in the cylinder body, and the bottom of piston rod is with spring; The two ends of described cylinder body and piston rod are separately installed with guide pin bushing, are fixed on the cylinder body through clamp nut; Also be respectively arranged with A hydraulic fluid port that is connected with the pressure oil circuit of hydraulic actuator and the B hydraulic fluid port that is connected with fuel tank on the described cylinder body.
Described A hydraulic fluid port is the pressure hydraulic fluid port; Described B hydraulic fluid port is the pressure release hydraulic fluid port.
The utility model has the advantages that: this overtravel protection apparatus structure is simple, and when the slider of hydraulic press excess of stroke, slide block is depressed piston rod; Piston rod moves down a bit of distance; A hydraulic fluid port (hydraulic system pressure hydraulic fluid port) and B hydraulic fluid port (pressure relief opening) are connected, and making hydraulic control system pressure moment is zero, and slide block runs out of steam; Fall on safety cock or the non-yielding prop cushion block, can not damage equipment.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain:
Accompanying drawing is the utility model structural representation;
Among the figure: 1, clamp nut, 2, guide pin bushing, 3, piston rod, 4, cylinder body, 5, spring.
The specific embodiment
Shown in accompanying drawing: a kind of hydraulic press pressure release overtravel protection device, described protective device includes cylinder body 4, and piston rod 3 is arranged in the cylinder body, and the bottom of piston rod is with spring 5; The two ends of described cylinder body and piston rod are separately installed with guide pin bushing 2, are fixed on the cylinder body through clamp nut 1; Also be respectively arranged with A hydraulic fluid port that is connected with the pressure oil circuit of hydraulic actuator and the B hydraulic fluid port that is connected with fuel tank on the described cylinder body.
Described A hydraulic fluid port is the pressure hydraulic fluid port; Described B hydraulic fluid port is the pressure release hydraulic fluid port.
The course of work: pressure relief device is fixed on motion slide block overtravel protection position, and when the slide block excess of stroke, slide block is depressed piston rod; Piston rod moves down a bit of distance; A hydraulic fluid port (hydraulic system pressure hydraulic fluid port) and B hydraulic fluid port (pressure relief opening) are connected, and making hydraulic control system pressure moment is zero, and slide block runs out of steam; Fall on safety cock or the non-yielding prop cushion block, can not damage equipment.

Claims (2)

1. hydraulic press pressure release overtravel protection device, it is characterized in that: described protective device includes cylinder body (4), and piston rod (3) is arranged in the cylinder body, and the bottom of piston rod is with spring (5); The two ends of described cylinder body and piston rod are separately installed with guide pin bushing (2), are fixed on the cylinder body through clamp nut (1); Also be respectively arranged with A hydraulic fluid port that is connected with the pressure oil circuit of hydraulic actuator and the B hydraulic fluid port that is connected with fuel tank on the described cylinder body.
2. a kind of hydraulic press pressure release overtravel protection device according to claim 1, it is characterized in that: described A hydraulic fluid port is the pressure hydraulic fluid port; Described B hydraulic fluid port is the pressure release hydraulic fluid port.
CN 201220240238 2012-05-27 2012-05-27 Pressure-leaking over travel protection device of hydraulic machine Expired - Fee Related CN202592803U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220240238 CN202592803U (en) 2012-05-27 2012-05-27 Pressure-leaking over travel protection device of hydraulic machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220240238 CN202592803U (en) 2012-05-27 2012-05-27 Pressure-leaking over travel protection device of hydraulic machine

Publications (1)

Publication Number Publication Date
CN202592803U true CN202592803U (en) 2012-12-12

Family

ID=47310385

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220240238 Expired - Fee Related CN202592803U (en) 2012-05-27 2012-05-27 Pressure-leaking over travel protection device of hydraulic machine

Country Status (1)

Country Link
CN (1) CN202592803U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108908983A (en) * 2018-08-02 2018-11-30 安徽远都机床股份有限公司 A kind of open type two point hydraulic device with buffering

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108908983A (en) * 2018-08-02 2018-11-30 安徽远都机床股份有限公司 A kind of open type two point hydraulic device with buffering

Similar Documents

Publication Publication Date Title
CN102248704A (en) Numerical control frame type over travel protective device for main cylinder of hydraulic machine
CN202592803U (en) Pressure-leaking over travel protection device of hydraulic machine
CN204436927U (en) A kind of flexible adjustable pressurized cylinder
CN201636109U (en) Liquid charging valve
CN202573096U (en) Oil hydraulic press
CN202224943U (en) Clamping device for transverse beam and slip board
CN204451245U (en) One is moved formula rapid oil press
CN204367200U (en) Multi-wire saw working bench locking device
CN203189377U (en) Tri-shaft air cylinder
CN203603668U (en) Hydraulic type radar cabin opening device
CN202242032U (en) Hydraulic device for machining workpieces
CN203627633U (en) Adjustable hydraulic buffer
CN202180329U (en) Combined hydraulic dismounting and mounting pressure tool
CN202125481U (en) Circuit used to quickly replace contaminated oil in master cylinder of servo system
CN204677137U (en) A kind of hydraulic tongs
CN202781308U (en) Oil pressure punching device
CN201632811U (en) Production line through type hydraulic machine
CN203604316U (en) Pulling tower oil cylinder
CN204023658U (en) Compact hydraulic facility fast replacing device for excavator
CN203409136U (en) Travelling table locating device of blade trimming and forming press of large turbine
CN203817203U (en) Mould rapidly positioning and clamping device
CN203738394U (en) Transverse beam locking device
CN107825754B (en) Pneumatic clamping cylinder for press machine moving platform
CN203394923U (en) Oil cylinder protection device for hydraulic press
CN208895088U (en) A kind of forging machine tool protective device

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121212

Termination date: 20130527

C17 Cessation of patent right