CN106763438B - Hydraulic bjuffer - Google Patents

Hydraulic bjuffer Download PDF

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Publication number
CN106763438B
CN106763438B CN201710062999.6A CN201710062999A CN106763438B CN 106763438 B CN106763438 B CN 106763438B CN 201710062999 A CN201710062999 A CN 201710062999A CN 106763438 B CN106763438 B CN 106763438B
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CN
China
Prior art keywords
cushion dashpot
movement
dashpot
fixed
cushion
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Application number
CN201710062999.6A
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Chinese (zh)
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CN106763438A (en
Inventor
杨景刚
赵科
李洪涛
高山
贾勇勇
陶加贵
王静君
刘通
腾云
刘媛
李玉杰
宋思齐
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.)
State Grid Corp of China SGCC
Xian Jiaotong University
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Xian Jiaotong University
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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Priority to CN201710062999.6A priority Critical patent/CN106763438B/en
Publication of CN106763438A publication Critical patent/CN106763438A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • F16F9/346Throttling passages in the form of slots arranged in cylinder walls

Abstract

The invention discloses a kind of hydraulic bjuffers, including oil cylinder seat, cushion dashpot, piston, rotary sleeve;Cushion dashpot is arranged in oil cylinder seat, and cushion dashpot includes fixed cushion dashpot and movement cushion dashpot;Fixed cushion dashpot is set in the inside of movement cushion dashpot, and fixed cushion dashpot and movement buffering cylinder surfaces offer throttle orifice and return port;Fixed cushion dashpot is inner cavity for storing oil liquid, the hollow space that fixed cushion dashpot and piston are formed;There is certain gap between movement cushion dashpot and oil cylinder seat, which uses to form exocoel as oil back chamber;Rotary sleeve is connect with movement cushion dashpot, for controlling the rotation of movement cushion dashpot, adjusts throttling number of perforations and size that movement cushion dashpot is aligned with fixed cushion dashpot;When piston is moved by the effect of power into cushion dashpot, oil liquid, which is compressed, flows to exocoel from inner cavity through throttle orifice, then flows back to inner cavity by return port, to realize the circulation of oil liquid.

Description

Hydraulic bjuffer
Technical field
The present invention relates to a kind of hydraulic bjuffers, and in particular to actual conditions as needed adjust the hydraulic cushion of cushion effect Device.
Background technique
Buffer is that one kind is extended for impact load, absorbs and converts the energy in impact load to reduce The device of its adverse consequences is widely used in the every field such as lifting transport, metallurgy, harbour machinery, rail truck, property Energy quality directly influences many factors such as machine service life, operator's safety therefore in production with extremely important Status.
Buffer is broadly divided into mechanical spring type buffer, rubber type from the angle of its core buffer element and simulated acid rain Five classes such as buffer, air-cylinder type buffer, hydraulic bjuffer, a hydraulic spring buffer.Wherein hydraulic bjuffer because its can will Most of impact energy, which passes through the thermal energy that throttle orifice sorption enhanced is oil liquid and dissipates, to buffer efficiency and attenuation coefficient than passing The buffer of system, which greatly improves, obtains the favor of more users.
Hydraulic bjuffer be mainly utilize oil liquid Incoercibility and mobility by closing cavity liquid can Variable volume chamber and the Incoercibility of and liquid can not be flowed between variable volume chamber carry gentle strategically important place to reach corresponding pressure It asks.Hydraulic bjuffer stable working, absorbability is big, industrially has been widely used.
Traditional hydraulic bjuffer structure is fixed, and every kind of mechanism can only realize a kind of buffer function, and cushion effect can not be with Working condition be adjusted, and may result under buffering effect due to oil leak etc. in mechanism after working long hours Drop.
Summary of the invention
Purpose: in order to overcome the deficiencies in the prior art, the present invention provides a kind of hydraulic bjuffer, slow by changing The throttling hole count that journey uses is broken through to achieve the effect that adjust cushion effect, it is characterised in that the cushion dashpot of original mechanism is divided into two Layer, one layer of fixation, one layer of rotation, there is the throttle orifice of different numbers and size in the movement each face of cushion dashpot, and fixes cushion dashpot only There is a cribbing discharge orifice in a face.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of hydraulic bjuffer, including oil cylinder seat, cushion dashpot, piston, rotary sleeve;Cushion dashpot is arranged in oil cylinder seat, Be characterized in that: the cushion dashpot includes fixed cushion dashpot and movement cushion dashpot;Fixed cushion dashpot is set in the interior of movement cushion dashpot Portion,
Fixed cushion dashpot and movement buffering cylinder surfaces offer throttle orifice and return port, fixed cushion dashpot and movement cushion dashpot In throttle orifice/return port in specific position at least one corresponding formation communicating passage;
The fixed cushion dashpot is hollow container, for storing oil liquid, the hollow portion that fixed cushion dashpot and piston are formed It is divided into inner cavity;There is certain gap between movement cushion dashpot and oil cylinder seat, which uses to form exocoel as oil back chamber;
Rotary sleeve is connect with movement cushion dashpot, for controlling the rotation of movement cushion dashpot, adjusts movement cushion dashpot and fixation The throttling number of perforations and size of cushion dashpot alignment;When piston is moved by the effect of power into cushion dashpot, oil liquid compressed from Inner cavity flows to exocoel through throttle orifice, then flows back to inner cavity by return port, to realize the circulation of oil liquid.
Preferably, the hydraulic bjuffer, it is characterised in that: movement cushion dashpot four sides offers throttling Hole, and number differs;Only one side position corresponding with movement cushion dashpot throttle orifice offers throttling to fixed cushion dashpot wherein Hole, the number and size variation for by rotary motion cushion dashpot the throttle orifice of two cushion dashpots being aligned are delayed to realize to adjust The effect of impulse force.
The hydraulic bjuffer, it is characterised in that: piston includes piston head and the piston rod for being connected to piston head top, Piston head setting makes to seal at the top of fixed cushion dashpot inside fixed cushion dashpot.
Preferably, the hydraulic bjuffer, it is characterised in that: the rotary sleeve setting is connected to movement buffering The top of cylinder.
Preferably, the hydraulic bjuffer, it is characterised in that: the middle and lower part of cushion dashpot is arranged in throttle orifice, The top of cushion dashpot is arranged in the position on top in return port.
The utility model has the advantages that hydraulic bjuffer provided by the invention, the cushion dashpot of original mechanism is divided into two layers, one layer of fixation, One layer of rotation, there is the throttle orifice of different numbers and size in the movement each face of cushion dashpot, and fixing cushion dashpot only has one in a face Cribbing discharge orifice allows the throttling hole count on its surface and the throttling hole count of fixed cushion dashpot to be aligned by rotational motion cushion dashpot, thus Realize that buffer uses the throttle orifice of different numbers in varied situations, cushion effect achievees the effect that variable.It is buffered by changing The throttling hole count that process uses achievees the effect that adjust cushion effect, can difference according to the actual situation adjust cushion effect Size selects most suitable buffering effect, maximizes the performance of mechanism.Due to the flow restriction of throttle orifice, the speed of piston It is restricted, has the function that buffering, by the rotation of cushion dashpot in hydraulic bjuffer (movement), adjust the structure of throttle orifice, So that the cushion effect of this buffer is adjustable.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the structural model of cushion dashpot in the present invention;
In figure: oil cylinder seat 1, cushion dashpot 2, fixed cushion dashpot 21, movement cushion dashpot 22, piston 3, rotary sleeve 4, throttle orifice 5, Return port 6, inner cavity 7, exocoel 8.
Specific embodiment
The present invention will be further explained combined with specific embodiments below.
As shown in Figure 1, a kind of hydraulic bjuffer, including oil cylinder seat 1, cushion dashpot 2, piston 3, rotary sleeve 4;Cushion dashpot 2 is solid It is scheduled in oil cylinder seat 1, the cushion dashpot 2 includes fixed cushion dashpot 21 and movement cushion dashpot 22;Fixed cushion dashpot 21 is set in fortune The inside of dynamic cushion dashpot 22, fixed cushion dashpot 21 and movement 22 corresponding position surface of cushion dashpot offer throttle orifice 5 and return port 6, the fixed cushion dashpot 21 is hollow container, for storing oil liquid, the hollow space that fixed cushion dashpot 21 is formed with piston 3 For inner cavity 7;There is certain gap between movement cushion dashpot 22 and oil cylinder seat 1, which uses to form exocoel 8 as oil back chamber; Rotary sleeve 4 is connect with movement cushion dashpot 2, for controlling the rotation of movement cushion dashpot 2, is adjusted movement cushion dashpot 22 and is buffered with fixed 5 number of throttle orifice and size that cylinder 21 is aligned;When piston 3 is moved by the effect of power into cushion dashpot, oil liquid compressed from Inner cavity 7 flows to exocoel 8 through throttle orifice 5, then flows back to inner cavity by return port 6, to realize the circulation of oil liquid.
The hydraulic bjuffer, piston 3 include piston head and the piston rod for being connected to piston head top, piston head setting Make to seal at the top of fixed cushion dashpot 21 inside fixed cushion dashpot 21.
In the present embodiment, the top for being connected to movement cushion dashpot 2 is arranged in the rotary sleeve 4.
Preferably, the middle and lower part of cushion dashpot is arranged in throttle orifice, and top to the top of cushion dashpot is arranged in return port The position at end.
Fig. 2 show the structural model of cushion dashpot 2, and top is return port 6, and bottom is throttle orifice 5, moves 22 He of cushion dashpot Fixed cushion dashpot 21 the difference is that, there is throttle orifice at 22 four sides of movement cushion dashpot, and number differs, and fixes cushion dashpot 21 are only to have throttle orifice on one side, by rotary motion cushion dashpot the throttle orifice of two cushion dashpots are aligned, due to difference In face of it is neat when, the number of the throttle orifice to play a role is different, so that the buffering effect of cushion dashpot is different.Simultaneous buffering device due to It, can be the throttle orifice relative dislocation of two cushion dashpots, so that effective throttleng surface when the reasons such as oil leak cause cushion performance to decline Product reduces, and cushion effect becomes larger, and plays certain adjustment effect.
The present invention use process is as follows: before work, injecting oil liquid in inner cavity 7, when piston by power effect to cushion dashpot When interior mobile, oil liquid is flowed out from the throttle orifice 5 of the connection of 21 the two of movement cushion dashpot 22 and fixed cushion dashpot, is left to exocoel 8, is led to The flow restriction for crossing throttle orifice 5 reaches buffering effect, and the oil liquid in exocoel is flowed back in inner cavity by return port 6.From fluid force Angle analysis has hole count, aperture and the coordinate in hole it is found that influencing the main structure parameters of buffer buffering effect.Change section The adjusting of cushion effect may be implemented in the number of discharge orifice, copes with different situations.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (5)

1. a kind of hydraulic bjuffer, including oil cylinder seat, cushion dashpot, piston, rotary sleeve;Cushion dashpot is arranged in oil cylinder seat, special Sign is: the cushion dashpot includes fixed cushion dashpot and movement cushion dashpot;Fixed cushion dashpot is set in the inside of movement cushion dashpot,
Fixed cushion dashpot and movement buffering cylinder surfaces offer throttle orifice and return port, fix in cushion dashpot and movement cushion dashpot Throttle orifice/return port at least one corresponding formation communicating passage in specific position;
The fixed cushion dashpot is hollow container, and for storing oil liquid, the hollow space that fixed cushion dashpot is formed with piston is Inner cavity;There is certain gap between movement cushion dashpot and oil cylinder seat, which uses to form exocoel as oil back chamber;
Rotary sleeve is connect with movement cushion dashpot, for controlling the rotation of movement cushion dashpot, is adjusted movement cushion dashpot and is buffered with fixed The throttling number of perforations and size of cylinder alignment;When piston is moved by the effect of power into cushion dashpot, oil liquid is compressed from inner cavity Exocoel is flowed to through throttle orifice, then inner cavity is flowed back to by return port, to realize the circulation of oil liquid;
Movement cushion dashpot four sides offers throttle orifice, and number differs;Only one side buffers fixed cushion dashpot with movement wherein The corresponding position of cylinder throttle orifice offers throttle orifice, by rotary motion cushion dashpot the throttle orifice of two cushion dashpots is aligned Number and size variation, come realize adjust cushion effect effect.
2. hydraulic bjuffer according to claim 1, it is characterised in that: piston includes piston head and is connected to the piston crown The piston rod at end, piston head setting make to seal at the top of fixed cushion dashpot inside fixed cushion dashpot.
3. hydraulic bjuffer according to claim 1, it is characterised in that: the rotary sleeve setting is connected to movement cushion dashpot Top.
4. hydraulic bjuffer according to claim 1, it is characterised in that: the middle and lower part of cushion dashpot is arranged in throttle orifice.
5. hydraulic bjuffer according to claim 1, it is characterised in that: top to the top of cushion dashpot is arranged in return port Position.
CN201710062999.6A 2017-02-03 2017-02-03 Hydraulic bjuffer Active CN106763438B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710062999.6A CN106763438B (en) 2017-02-03 2017-02-03 Hydraulic bjuffer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710062999.6A CN106763438B (en) 2017-02-03 2017-02-03 Hydraulic bjuffer

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CN106763438A CN106763438A (en) 2017-05-31
CN106763438B true CN106763438B (en) 2019-01-08

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107477133B (en) * 2017-10-18 2019-09-17 河南省汇隆精密设备制造股份有限公司 A kind of single-piston rod hydraulic damper
CN108006142A (en) * 2017-10-24 2018-05-08 武汉船用机械有限责任公司 A kind of adjustable hydraulic damping buffer
CN113183904A (en) * 2021-04-01 2021-07-30 苏州经贸职业技术学院 Automobile anti-collision energy-absorbing assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1943978A1 (en) * 1969-08-25 1971-03-11 Mannesmann Ag Catcher for pilgrim tread mill
CH588646A5 (en) * 1974-04-20 1977-06-15 Fussangel Hubert
JP2001023480A (en) * 1999-07-13 2001-01-26 Mitsubishi Electric Corp Breaker
US6648109B2 (en) * 2001-09-13 2003-11-18 Meritor Heavy Vehicle Technology, Llc Adjustable shock absorber
CN206458763U (en) * 2017-02-03 2017-09-01 国网江苏省电力公司电力科学研究院 Hydraulic bjuffer

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Address after: PA Weier road Jiangning District of Nanjing City, Jiangsu Province, No. 1 211103

Applicant after: State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute

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Inventor after: Yang Jinggang

Inventor after: Liu Yuan

Inventor after: Li Yujie

Inventor after: Song Siqi

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Inventor after: Li Hongtao

Inventor after: Gao Shan

Inventor after: Jia Yongyong

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Applicant after: Xi'an Jiaotong University

Address before: PA Weier road Jiangning District of Nanjing City, Jiangsu Province, No. 1 211103

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