CN201347919Y - Hydraulic cylinder with integrated one-way throttling device - Google Patents

Hydraulic cylinder with integrated one-way throttling device Download PDF

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Publication number
CN201347919Y
CN201347919Y CNU2008202049008U CN200820204900U CN201347919Y CN 201347919 Y CN201347919 Y CN 201347919Y CN U2008202049008 U CNU2008202049008 U CN U2008202049008U CN 200820204900 U CN200820204900 U CN 200820204900U CN 201347919 Y CN201347919 Y CN 201347919Y
Authority
CN
China
Prior art keywords
valve
throttling
way
hydraulic cylinder
valve body
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
CNU2008202049008U
Other languages
Chinese (zh)
Inventor
樊桂萍
唐建光
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.)
SHAOGUAN HYDRAULIC PLANT CO Ltd
Original Assignee
SHAOGUAN HYDRAULIC PLANT 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 SHAOGUAN HYDRAULIC PLANT CO Ltd filed Critical SHAOGUAN HYDRAULIC PLANT CO Ltd
Priority to CNU2008202049008U priority Critical patent/CN201347919Y/en
Application granted granted Critical
Publication of CN201347919Y publication Critical patent/CN201347919Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a hydraulic cylinder with an integrated one-way throttling device, which comprises a cylinder body. A cushioning device fixedly installed on the cylinder body comprises a valve body and a valve seat, a throttling valve element is mounted inside the upper portion of the valve body, a one-way valve element is arranged inside the lower portion of the valve body, a spring is disposed between the throttling valve element and the one-way valve element which are arranged inside the valve body, and the lower end of the valve body is equipped with throttling orifices. When the hydraulic cylinder is in cushioning stroke, a one-way throttling device serves as a throttling valve, and when a piston restarts, the one-way throttling device serves as a one-way valve, besides, the one-way valve generally does not need adjusting, the throttling valve can be adjusted only by unscrewing a lock nut, and the opening degree of the throttling orifices can become small or big through adjusting the throttling valve element to be inward or outward. The hydraulic cylinder with an integrated one-way throttling device has the advantages of simple structure, convenient utilization and installation and reliable operation, realizes the function of a throttling valve and simultaneously realizes the function of a one-way valve, and meets the actual requirement of hydraulic cylinders which are used in special working conditions.

Description

Oil hydraulic cylinder with integrated type one-way throttle device
[technical field]
The utility model belongs to the hydraulics field, relates to the oil hydraulic cylinder with integrated type one-way throttle device that a kind of throttling function that can realize throttle valve can realize the one-way function of one-way valve again.
[background technique]
Mechanical automation is one of direction of modern mechanical development, and hydraulics is to realize the technical foundation of mechanical automation.Oil hydraulic cylinder is as the executive component of hydraulic unit, and its successful operation is the essential condition that realizes mechanical automation.According to the requirement of real service condition, many oil hydraulic cylinders require buffering at end of travel, and the whole process that adjustable buffering mechanism is finished buffering and started by the acting in conjunction of throttle valve and one-way valve.
Damping device is generally cooperated with the cushion hole of cylinder bottom by buffering ring and forms clearance seal, fluid is sealed up for safekeeping in oil-discharging cavity, these fluid of sealing up for safekeeping can only be flowed out by the spool and the annulus between the valve seat of throttle valve, because the damping function of throttle valve, the power of the retarding braking that feasible fluid generation of sealing up for safekeeping and the inertial force in the piston running contend with, one-way valve then can be when oil hydraulic cylinder starts, fluid promptly is filled in the space between piston and the cylinder bottom, makes piston can can't not start or move difficulty because of being short of power.Generally adopted the oil hydraulic cylinder of this permanent throttling damping device, all needed the supporting with it use of one-way valve.For some oil hydraulic cylinders that under special operation condition, uses, because the restriction of installing space, can only trimmer valve be installed in a certain definite orientation, can not realize the throttling function of throttle valve and the one-way function of realizing one-way valve simultaneously, for so actual requirement, then traditional thinking mounting type will be restricted.
In order to solve the installation requirement of the oil hydraulic cylinder that uses under the special operation condition, in order to satisfy the usability requirement of oil hydraulic cylinder, propose this integrated type one-way throttle device project organization, the installing space of its valve of needs and a valve position just can be realized the effect of throttle valve and one-way valve simultaneously.
[model utility content]
In order to overcome the above-mentioned shortcoming of prior art, the utility model provides the installing space of a valve of a kind of needs and a valve position just can realize simultaneously that the effect of throttle valve and one-way valve has the oil hydraulic cylinder of integrated type one-way throttle device.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of oil hydraulic cylinder with integrated type one-way throttle device, comprise cylinder body, on described cylinder body, be installed with damping device, this damping device includes valve body and valve seat, throttling valve core is equipped with on top in valve body, nonreturn valve core is equipped with in bottom in valve body, between the throttling valve core of valve inner and nonreturn valve core spring is housed, and is provided with throttle orifice in the lower end of valve body.Described throttling valve core is fixedly mounted on the valve body by locking nut.Round section joint ring and combination seal packing ring are housed above described throttling valve core.
The beneficial effects of the utility model are: when oil hydraulic cylinder enters cushion stroke, the one-way throttle device just plays throttle valve, when piston restarts, the one-way throttle device just plays one-way valve, and one-way valve does not generally need to regulate, and throttle valve only need unscrew locking nut, and the adjusting throttling valve core is inside or outside, make the throttling pore opening degree diminish or become big, reach the cushioning effect that we require; Have simple in structure, easy to install and use and operate reliable advantage, not only realized throttle functionality but also realized the function of one-way valve simultaneously again, satisfied the actual requirement of the oil hydraulic cylinder that special operation condition uses down.
[description of drawings]
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of damping device described in the utility model;
1-locking nut, 2-valve body, 3-combination seal packing ring, 4-round section joint ring, 5-throttling valve core, 6-spring, 7-nonreturn valve core, 8-throttle orifice, 9-valve seat, 10-cylinder body, 11-damping device.
[embodiment]
Referring to Fig. 1, a kind of oil hydraulic cylinder with integrated type one-way throttle device comprises cylinder body 10, is installed with damping device 11 on described cylinder body 10; Referring to Fig. 2, this damping device 11 includes valve body 2 and valve seat 9, and throttling valve core 5 is housed in the top of valve body 2, and nonreturn valve core 7 is housed in the bottom of valve body 2, between the throttling valve core 5 of valve body 2 inside and nonreturn valve core 7, spring 6 is housed, is provided with throttle orifice 8 in the lower end of valve body 2; Described throttling valve core 5 is fixedly mounted on the valve body 2 by locking nut 1; Round section joint ring 4 and combination seal packing ring 3 are housed above described throttling valve core 5.
When fluid is sealed up for safekeeping in oil-discharging cavity, just can flow to oil drain out by throttle orifice 8, form the damping throttling action between the throttle orifice 8 on the plunger of throttling valve core 5 and the nonreturn valve core 7, so just can make oil-discharging cavity form the needed pressure of buffering, situation according to load can be regulated the effect of buffering, as long as locking nut 1 is unscrewed, with throttling valve core 5 to inward turning or to outward turning, just can change the size of throttle orifice 8 opening degrees, thereby be adjusted to needed cushioning effect, thereby realized the function of throttle valve; When piston reruns, fluid just can be pushed the nonreturn valve core 7 that is pressed on the valve seat 9 open, make fluid successfully enter into space between cylinder bottom and the piston, with less pressure, the area of contact that moment is bigger, produce the Driving force that needs and come the primer fluid cylinder pressure, thereby realized the function of one-way valve.Structure of the present utility model has not only realized throttle functionality but also has realized the function of one-way valve simultaneously again, has satisfied the special operation condition actual requirement of the oil hydraulic cylinder of use down.

Claims (3)

1, a kind of oil hydraulic cylinder with integrated type one-way throttle device, comprise cylinder body, it is characterized in that: on described cylinder body, be installed with damping device, this damping device includes valve body and valve seat, throttling valve core is equipped with on top in valve body, nonreturn valve core is equipped with in bottom in valve body, between the throttling valve core of valve inner and nonreturn valve core spring is housed, and is provided with throttle orifice in the lower end of valve body.
2, the oil hydraulic cylinder with integrated type one-way throttle device as claimed in claim 1, it is characterized in that: described throttling valve core is fixedly mounted on the valve body by locking nut.
3, the oil hydraulic cylinder with integrated type one-way throttle device as claimed in claim 1 is characterized in that: round section joint ring and combination seal packing ring are housed above described throttling valve core.
CNU2008202049008U 2008-12-05 2008-12-05 Hydraulic cylinder with integrated one-way throttling device Expired - Fee Related CN201347919Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202049008U CN201347919Y (en) 2008-12-05 2008-12-05 Hydraulic cylinder with integrated one-way throttling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202049008U CN201347919Y (en) 2008-12-05 2008-12-05 Hydraulic cylinder with integrated one-way throttling device

Publications (1)

Publication Number Publication Date
CN201347919Y true CN201347919Y (en) 2009-11-18

Family

ID=41367389

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008202049008U Expired - Fee Related CN201347919Y (en) 2008-12-05 2008-12-05 Hydraulic cylinder with integrated one-way throttling device

Country Status (1)

Country Link
CN (1) CN201347919Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101915252A (en) * 2010-08-20 2010-12-15 蚌埠天地重型机械制造股份有限公司 Buffer starting structure for oil cylinder rodless cavity
CN102734258A (en) * 2011-03-31 2012-10-17 梅西耶-布加蒂-道提公司 Hydraulic actuator with automatic drain at end of travel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101915252A (en) * 2010-08-20 2010-12-15 蚌埠天地重型机械制造股份有限公司 Buffer starting structure for oil cylinder rodless cavity
CN102734258A (en) * 2011-03-31 2012-10-17 梅西耶-布加蒂-道提公司 Hydraulic actuator with automatic drain at end of travel
CN102734258B (en) * 2011-03-31 2015-12-09 梅西耶-布加蒂-道提公司 End of travel is with the hydraulic actuator of automatic-discharging

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091118

Termination date: 20121205