CN206017314U - A kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder - Google Patents

A kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder Download PDF

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Publication number
CN206017314U
CN206017314U CN201620994448.4U CN201620994448U CN206017314U CN 206017314 U CN206017314 U CN 206017314U CN 201620994448 U CN201620994448 U CN 201620994448U CN 206017314 U CN206017314 U CN 206017314U
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China
Prior art keywords
housing
pin
cylinder barrel
piston rod
cylinder
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Active
Application number
CN201620994448.4U
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Chinese (zh)
Inventor
王伟伟
范华志
闫国庆
李小明
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Xuzhou XCMG Hydraulics Co Ltd
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Xuzhou XCMG Hydraulics Co Ltd
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Priority to CN201620994448.4U priority Critical patent/CN206017314U/en
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Abstract

This utility model discloses a kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder, piston rod, piston including cylinder barrel and cooperation in cylinder barrel, fairlead, cylinder barrel bottom is provided with locking device, locking device includes housing, pin, spring, guide pillar and the gland used cooperatively with housing, pin is T-shaped, on housing;, on guide pillar, guide pillar is on pin for spring;Gland is threaded connection with housing, and guide pillar and spring are fixed;Housing is threadedly attached on cylinder barrel;Piston-rod end is taper and is provided with annular groove;Cylinder barrel bottom is provided with hydraulic fluid port.This utility model realizes the automatic mechanical caging of oil cylinder and hydraulic pressure automatic unlocking function on the premise of oil path in oil cylinder is not changed, the long-time of the piston rod in hydraulic cylinder can be made to be maintained at fixed position, avoid the occurrence of the phenomenon of piston rod displacement, easy to use, function is reliable, stable, improves work efficiency and the safety of product.

Description

A kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder
Technical field
This utility model is related to a kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder, belongs to hydraulic cylinder technical field.
Background technology
Hydraulic cylinder is a kind of range of application equipment widely, its using fluid as working media, inside fluid Pressure transmitting power, hydraulic energy is changed into mechanical energy, straight reciprocating motion or oscillating motion is done.Hydraulic cylinder is generally by living A few part compositions such as stopper rod, cylinder body, piston, fairlead and sealing system.With the development of hydraulic cylinder, it is employed more and more In on the radar fix device of some plant equipment such as space flight navigation, guide rail locking apparatus, milling train locking device, answer at these With in occasion, the piston rod of hydraulic cylinder generally needs to be maintained at same position state within a certain period of time and can not have movement.Such as The hydraulic cylinder being used in the engineering machinery such as crane, pump truck, before equipment movement is travelled, needing will be with supporting leg oil with cross cylinder The square chest of cylinder connection withdraws underbody, and to ensure vehicle travel process safety and steady, in order to prevent vehicle, square chest is collected together in the process of moving Dynamic, after cross cylinder piston rod is fully retracted, it is necessary to carry out safety locking to hydraulic cylinder piston rod position.
At present, most methods is installation hydraulic lock on hydraulic cylinder, separates the flowing of hydraulic oil using hydraulic lock, from And make the piston rod long-time in hydraulic cylinder be maintained at fixed position.But, if hydraulic cylinder itself or hydraulic lock are let out, piston Bar will produce certain displacement, so as to have influence on work efficiency and the safety of equipment.
Content of the invention
For the problem that above-mentioned prior art is present, this utility model provides a kind of mechanical self-latching hydraulic pressure opening formula hydraulic pressure Cylinder, can make the long-time of the piston rod in hydraulic cylinder be maintained at fixed position, it is to avoid the phenomenon of piston rod displacement occur, and then improve The work efficiency of equipment and safety.
To achieve these goals, a kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder that this utility model is adopted, including cylinder The piston rod of cylinder and cooperation in cylinder barrel, piston, fairlead, the cylinder barrel bottom is provided with locking device, locking device Including housing, pin, spring, guide pillar and the gland used cooperatively with housing, pin is T-shaped, on housing;Spring is pacified It is mounted on guide pillar, guide pillar is on pin;Gland is threaded connection with housing, and guide pillar and spring are fixed;Housing passes through It is threaded on cylinder barrel;Piston-rod end is taper and is provided with annular groove;Cylinder barrel bottom is provided with hydraulic fluid port.
Preferably, sealing ring I is provided between the housing and cylinder barrel, is provided with sealing ring II between pin and housing, seal Circle I, sealing ring II are O-ring seals.
Preferably, the spring has certain pre compressed magnitude, and piston-rod end spill well width is more than cotter diameter, living During full reduced time of stopper rod, pin is stuck in piston-rod end groove under spring force.
Compared with prior art, this utility model realizes the automatic mechanical lock of oil cylinder on the premise of oil path in oil cylinder is not changed Fixed and hydraulic pressure automatic unlocking function, can make the long-time of the piston rod in hydraulic cylinder be maintained at fixed position, it is to avoid piston rod occur The phenomenon of displacement, easy to use, function is reliable, stable, improves work efficiency and the safety of product.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure:1st, guide pillar, 2, gland, 3, spring, 4, housing, 5, pin, 6, O-ring I, 7, O-ring II, 8, cylinder barrel, 9, Piston rod, 10, piston, 11, fairlead.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder, including cylinder barrel 8 and coordinates in cylinder barrel 8 Piston rod 9, piston 10, fairlead 11,8 bottom of the cylinder barrel is provided with locking device, locking device include housing 4, pin 5, Spring 3, guide pillar 1 and the gland 2 used cooperatively with housing 4, pin 5 are T-shaped, on housing 4;Spring 3 is arranged on and leads On post 1, guide pillar 1 is on pin 5;Gland 2 is threaded connection with housing 4, and guide pillar 1 and spring 3 are fixed;Housing 4 leads to Cross and be threaded on cylinder barrel 8;9 end of piston rod is taper and is provided with annular groove;8 bottom of cylinder barrel is provided with hydraulic fluid port.
Preferably, sealing ring I6 is provided between the housing 4 and cylinder barrel 8, be provided with sealing ring between pin 5 and housing 4 II7, sealing ring I6, sealing ring II7 are O-ring seals, can prevent fluid from leaking.
Preferably, the spring 3 has certain pre compressed magnitude, and 9 end spill well width of piston rod is straight more than pin 5 When footpath, piston rod 9 full reduced times, pin 5 is stuck in 9 end groove of piston rod under spring force.
During use, because 8 bottom of cylinder barrel is provided with hydraulic fluid port, during 8 bottom hydraulic fluid port oil return of cylinder barrel, rodless cavity oil pressure reduces, piston rod 9 Move backward, pin 5 until snapping in groove, plays a part of positioning and locking along 9 tapered distal end of piston rod to concave slot sports, can The long-time of the piston rod in hydraulic cylinder is made to be maintained at fixed position, it is to avoid the generation of piston rod offset phenomena;8 bottom hydraulic fluid port of cylinder barrel During oil-feed, rodless cavity oil pressure gradually increases, and is stuck in piston rod 9 when fluid active force is more than the spring force acted on pin 5 By jack-up, when higher than tapered end diameter, the unblock of piston rod 9 travels forward the pin 5 of end groove.
From said structure, this utility model realizes the automatic mechanical lock of oil cylinder on the premise of oil path in oil cylinder is not changed Fixed and hydraulic pressure automatic unlocking function, can make the long-time of the piston rod in hydraulic cylinder be maintained at fixed position, it is to avoid piston rod occur The phenomenon of displacement, easy to use, function is reliable, stable, improves work efficiency and the safety of product.

Claims (3)

1. a kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder, it is characterised in that including cylinder barrel (8) and coordinate and be arranged on cylinder barrel (8) piston rod (9), piston (10) in, fairlead (11), cylinder barrel (8) bottom are provided with locking device, and locking device includes Housing (4), pin (5), spring (3), guide pillar (1) and the gland (2) used cooperatively with housing (4), pin (5) are T-shaped, pacify It is mounted on housing (4);, on guide pillar (1), guide pillar (1) is on pin (5) for spring (3);Gland (2) and housing (4) It is threaded connection, will be fixed to guide pillar (1) and spring (3);Housing (4) is threadedly attached on cylinder barrel (8);Piston rod (9) End is taper and is provided with annular groove;Cylinder barrel (8) bottom is provided with hydraulic fluid port.
2. a kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder according to claim 1, it is characterised in that housing (4) Sealing ring I (6) is provided with and cylinder barrel (8) between, is provided with sealing ring II (7) between pin (5) and housing (4), sealing ring I (6), close Seal II (7) is O-ring seals.
3. a kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder according to claim 1, it is characterised in that spring (3) There is certain pre compressed magnitude, and piston rod (9) end spill well width is more than pin (5) diameter, during full reduced time of piston rod (9), Pin (5) is stuck in the groove of piston rod (9) end under spring force.
CN201620994448.4U 2016-08-30 2016-08-30 A kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder Active CN206017314U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620994448.4U CN206017314U (en) 2016-08-30 2016-08-30 A kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620994448.4U CN206017314U (en) 2016-08-30 2016-08-30 A kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder

Publications (1)

Publication Number Publication Date
CN206017314U true CN206017314U (en) 2017-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620994448.4U Active CN206017314U (en) 2016-08-30 2016-08-30 A kind of mechanical self-latching hydraulic pressure opening formula hydraulic cylinder

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167268A (en) * 2017-12-20 2018-06-15 中国航发长春控制科技有限公司 A kind of actuator locks modular structure
CN108775303A (en) * 2018-06-20 2018-11-09 王志伟 A kind of wearable hydraulic oil cylinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167268A (en) * 2017-12-20 2018-06-15 中国航发长春控制科技有限公司 A kind of actuator locks modular structure
CN108775303A (en) * 2018-06-20 2018-11-09 王志伟 A kind of wearable hydraulic oil cylinder

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