WO2006114048A1 - Mécanisme amortisseur dans un vérin à piston hydraulique - Google Patents

Mécanisme amortisseur dans un vérin à piston hydraulique Download PDF

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Publication number
WO2006114048A1
WO2006114048A1 PCT/CN2006/000773 CN2006000773W WO2006114048A1 WO 2006114048 A1 WO2006114048 A1 WO 2006114048A1 CN 2006000773 W CN2006000773 W CN 2006000773W WO 2006114048 A1 WO2006114048 A1 WO 2006114048A1
Authority
WO
WIPO (PCT)
Prior art keywords
buffer
cushion
cylinder
column
oil
Prior art date
Application number
PCT/CN2006/000773
Other languages
English (en)
Chinese (zh)
Inventor
Yangdong He
Original Assignee
Yangdong He
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 Yangdong He filed Critical Yangdong He
Publication of WO2006114048A1 publication Critical patent/WO2006114048A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position

Definitions

  • the present invention relates to a hydraulic ram cylinder damping device for a concrete pump.
  • the plunger cylinder of the concrete pump hydraulic system completes the driving function of the concrete distribution valve in the concrete pump, with fast action speed, large hydraulic flow and high pressure. If there is no effective and reliable buffering, it will cause serious impact and noise, and even cause corresponding machine failure.
  • the existing hydraulic plunger cylinder buffer device is composed of a buffer oil chamber at the bottom of the plunger and a buffer column of the oil cylinder, and a small hole is connected from the bottom of the buffer oil chamber to the outer surface of the plunger in the radial direction;
  • the group buffer device is installed in the buffer oil chamber at the bottom of the plunger, and the buffer piston is communicated with the small holes at both ends.
  • the buffer function is realized by the fixed liquid resistance, which often causes the plunger cylinder to decelerate and the peak pressure shock of the distribution valve oil passage.
  • the buffering effect is often poor, and even the cylinder is stuck and locked. The above defects adversely affect the operational reliability of the concrete pump and increase the manufacturing and maintenance costs of the product.
  • the technical problem to be solved by the present invention is to provide an improved hydraulic ram cylinder buffer device for the defects of the prior art, which can enhance the buffer function by automatically increasing the liquid resistance during the buffering process to ensure the buffering effect; At the same time, the mating surface of the buffer oil chamber and the buffer column is ensured to have a uniform gap and sufficient lubrication to reduce wear. Moreover, the device can effectively overcome the deficiencies of the existing buffer device, improve the reliability of the use of the plunger cylinder, and reduce the cost of manufacturing and maintenance.
  • the technical solution of the present invention is to provide a hydraulic ram cylinder buffer device, which is composed of a cylinder 2 and a plunger 1 inserted into the inner cavity of the cylinder 2, wherein the coaxial line on the bottom surface of the inner cavity of the cylinder 2 is provided.
  • a buffer column 21 There is a buffer column 21, and the coaxial line on the plunger 1 corresponding to the buffer column 21 is provided with a buffer oil chamber 11 matching the size of the buffer column 21.
  • the technical feature is that an oil groove 12 is disposed on the inner surface of the buffer oil chamber 11 in the axial direction.
  • the oil groove 12 has a spiral structure, and the oil groove 12 extends from the cavity bottom 13 of the buffer oil chamber 11 to the cavity 14.
  • the cylindrical surface of the buffer column 21 may also be distributed with oil grooves 22 in the axial direction.
  • the oil grooves 22 also have a spiral structure, and the oil grooves 22 extend from the column bottom 23 of the buffer column 21 to the column top 24.
  • the buffer oil chamber 11 of the hydraulic plunger cylinder buffer device for a concrete pump of the present invention is at the bottom of the plunger 1 facing the end of the cylinder 2, and the inner surface thereof is along
  • An oil groove 12 extends from the cavity bottom 13 of the buffer oil chamber 11 to the cavity 14 in the axial direction;
  • the buffer column 21 of the buffer device is on the oil cylinder 2, and the outer surface thereof also has an oil groove 22 extending from the column bottom 23 of the buffer column 21 in the axial direction. To the top of the column 24.
  • the oil groove ensures that the mating surface of the buffer oil chamber and the buffer column is evenly spaced and fully lubricated to reduce wear.
  • the deceleration is smooth and continuous, and the pressure shock is small, which makes the plunger cylinder work in a more ideal state.
  • the beneficial effects of the present invention are that the above characteristics of the shock absorbing device enable the hydraulic ram cylinder system to Effectively overcome the deficiencies of the existing buffer device, the reliability and working performance of the plunger cylinder are effectively improved and enhanced, and thus the manufacturing and service costs are reduced.
  • FIG. 1 is a schematic structural view of a hydraulic ram cylinder buffer device of the present invention.
  • the figure is marked as: 1 a plunger
  • a cylinder 2 having a diameter of 080 ram and a plunger 1 which is inserted into the inner cavity of the cylinder 2 and whose size is matched with the inner cavity of the cylinder 2.
  • a buffer column 21 having a diameter of 040 is disposed on the coaxial line on the bottom surface of the inner cavity of the cylinder 2, and a buffer oil chamber 11 matching the size of the buffer column 21 is disposed on the coaxial line of the plunger 1 corresponding to the buffer column 21.
  • a spiral oil groove 12 having a groove diameter of R1mm is disposed on the inner surface of the buffer oil chamber 11 in the axial direction, and the oil groove 12 extends from the cavity bottom 13 of the buffer oil chamber 11 to the cavity port 14, and the cylindrical surface of the buffer column 21 is also along the axis.
  • the direction is distributed with an oil groove 22 having a groove diameter of Rlmra, and the oil groove 22 is from The column bottom 23 of the buffer column 21 extends to the column top 24.
  • the hydraulic ram cylinder buffer device for a concrete pump of the present invention thus constructed has been proven to have a good effect and fully meets the design requirements.
  • the sample buffer device is tested, it can be seen that when the plunger quickly rushes to the bottom of the cylinder, the buffer column enters the buffer oil chamber, and the pressure oil in the chamber overflows from the oil groove and the matching gap, and the plunger starts and completes the buffer deceleration process.
  • the buffering capacity of the device increases with the depth of the plunger entering the buffer oil chamber, and the structure is simple, the work is reliable, and the buffer damping effect is good.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)

Abstract

L’invention concerne un mécanisme amortisseur dans un vérin à piston hydraulique composé d’un vérin 2 et d’un piston 1. Une colonne d’amortissement 21 est installée au fond du vérin 2, une chambre d’amortissement à huile 11 est formée dans le piston 1, une rainure d’huile 12 est formée dans la surface périphérique interne de la chambre d’amortissement 11, une autre rainure d’huile 22 est formée dans la surface périphérique externe de la colonne d’amortissement 21. Lorsque le mécanisme amortisseur est sollicité, le piston se déplace jusqu’au fond du vérin, de sorte que la colonne d’amortissement passe dans la chambre d’amortissement, l’huile sous pression dans la chambre est expurgée par les deux rainures d’huile et le jeu de raccord, et ainsi le piston est décéléré jusqu’au terme de l’amortissement. La capacité d’amortissement augmente en même temps que la profondeur à laquelle le piston parvient dans la chambre d’amortissement. Ce mécanisme possède une construction simple, un bon effet amortisseur et fonctionne de manière fiable.
PCT/CN2006/000773 2005-04-25 2006-04-24 Mécanisme amortisseur dans un vérin à piston hydraulique WO2006114048A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2005100314809A CN1854535A (zh) 2005-04-25 2005-04-25 一种液压柱塞油缸缓冲装置
CN200510031480.9 2005-04-25

Publications (1)

Publication Number Publication Date
WO2006114048A1 true WO2006114048A1 (fr) 2006-11-02

Family

ID=37194913

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/000773 WO2006114048A1 (fr) 2005-04-25 2006-04-24 Mécanisme amortisseur dans un vérin à piston hydraulique

Country Status (2)

Country Link
CN (1) CN1854535A (fr)
WO (1) WO2006114048A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012217531A1 (de) * 2012-09-27 2014-03-27 Jungheinrich Aktiengesellschaft Hydraulikzylinder mit unter Verwendung einer Spiralnut realisierter Ausfahrdämpfung
CN110617252A (zh) * 2018-12-20 2019-12-27 湖南机电职业技术学院 螺腔耦合缓冲斗杆油缸

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758574B (zh) * 2010-06-02 2016-06-29 靳北彪 直动阀发动机
JP5862098B2 (ja) * 2011-08-04 2016-02-16 Smc株式会社 流体圧シリンダ
CN103447880A (zh) * 2013-09-17 2013-12-18 江苏新瑞重工科技有限公司 高速机床失控时的防撞装置
CN105179366B (zh) * 2015-10-09 2017-03-01 济南大学 一种柔性涡旋助力、自动清渣且无积压式液压缸
CN113374747A (zh) * 2021-04-09 2021-09-10 哈尔滨理工大学 一种斜盘柱塞式液压变压器缓冲结构设计方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10103311A (ja) * 1996-09-25 1998-04-21 Hitachi Constr Mach Co Ltd 油圧シリンダ
CN2292929Y (zh) * 1996-08-23 1998-09-30 建设部长沙建设机械研究院 混凝土泵用柱塞式油缸的缓冲装置
JPH11190307A (ja) * 1997-12-25 1999-07-13 Hitachi Constr Mach Co Ltd 油圧シリンダ
CN2532311Y (zh) * 2002-04-03 2003-01-22 徐州天地重型机械制造有限公司 混凝土泵分配阀浮动缓冲驱动油缸

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2292929Y (zh) * 1996-08-23 1998-09-30 建设部长沙建设机械研究院 混凝土泵用柱塞式油缸的缓冲装置
JPH10103311A (ja) * 1996-09-25 1998-04-21 Hitachi Constr Mach Co Ltd 油圧シリンダ
JPH11190307A (ja) * 1997-12-25 1999-07-13 Hitachi Constr Mach Co Ltd 油圧シリンダ
CN2532311Y (zh) * 2002-04-03 2003-01-22 徐州天地重型机械制造有限公司 混凝土泵分配阀浮动缓冲驱动油缸

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012217531A1 (de) * 2012-09-27 2014-03-27 Jungheinrich Aktiengesellschaft Hydraulikzylinder mit unter Verwendung einer Spiralnut realisierter Ausfahrdämpfung
CN110617252A (zh) * 2018-12-20 2019-12-27 湖南机电职业技术学院 螺腔耦合缓冲斗杆油缸

Also Published As

Publication number Publication date
CN1854535A (zh) 2006-11-01

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