WO2012150753A1 - Système élévateur pneumatique équipé d'un moyen de verrouillage du piston - Google Patents

Système élévateur pneumatique équipé d'un moyen de verrouillage du piston Download PDF

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Publication number
WO2012150753A1
WO2012150753A1 PCT/KR2011/010251 KR2011010251W WO2012150753A1 WO 2012150753 A1 WO2012150753 A1 WO 2012150753A1 KR 2011010251 W KR2011010251 W KR 2011010251W WO 2012150753 A1 WO2012150753 A1 WO 2012150753A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
fastening
air
cylinder
housing
Prior art date
Application number
PCT/KR2011/010251
Other languages
English (en)
Inventor
Young Bong Park
Hyung Kun Park
Tae Ho Kim
Tae Geol Kim
Ae Jin Choi
Sun Hwa Lee
Eun Seok Choi
Original Assignee
Daejin Hydraulic Equipment & Tools
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 Daejin Hydraulic Equipment & Tools filed Critical Daejin Hydraulic Equipment & Tools
Publication of WO2012150753A1 publication Critical patent/WO2012150753A1/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
    • F15B15/26—Locking mechanisms
    • F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/30—Constructional features with positive brakes or locks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/26—Adaptations or arrangements of pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/26—Adaptations or arrangements of pistons
    • B66F3/28—Adaptations or arrangements of pistons telescopic
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems

Definitions

  • the present invention relates to an air lifting system, and more particularly, relates to an air lifting system with a piston locking means capable of locking the piston firmly at the position where the piston reached.
  • oil pressure or pneumatic(air pressure) device operates through various steps including: a step for pumping high pressure air by an operation of air pump (motor); a step for supplying the pumped high pressure air into an air cylinder; a step for elevating a piston of the air cylinder while the piston lifts up object to support (e.g. heavy vehicles, industrial machine, vessel parts, engine etc.); s step for locking the piston to fix after the piston is elevated to a desired position; and a step for releasing air supplement from the air cylinder.
  • object to support e.g. heavy vehicles, industrial machine, vessel parts, engine etc.
  • An object of the present invention is to provide an air lifting system with a piston locking means capable of locking the piston firmly by constraining a fastening groove provided on the outer periphery of the piston when the piston reaches a desired position while the piston lifts up object to support.
  • the air lifting system according to the present invention to achieve the above mention object includes:
  • a moving frame for providing a first installation seat for air cylinder installation and a second installation seat for air pump installation in the front and rear sides, respectively, thereof and rolling wheels to move are provided thereto;
  • a piston where a plurality of fastening grooves are provided at an equal interval along the top-down direction on the outer periphery thereof;
  • an air cylinder with a cylinder body configured to contain the piston and provide a piston elevating pneumatic channel
  • a piston locking means for fixing the piston by locking operation with the fastening gloove of the piston at a desired position while the piston is elevated by the air pressure supplied into the pneumatic channel by the air pump.
  • the piston elevating pneumatic channel includes;
  • a descending pneumatic channel which extends from the bottom of the inner cylinder body to the piston elevating guiding space.
  • the piston includes
  • the piston licking means includes;
  • a housing assembled to the upper periphery of the cylinder body of the air cylinder
  • a fastening link element installed at the inner periphery of the housing in order that it is inserted into or separated from the fastening groove while the piston is elevated;
  • the fastening link element includes:
  • first and second fastening links arranged to face each other at both sides of the inner periphery of the housing
  • a first and second driving bars which are connected to the other ends of the first and second links, respectively, in the vertical direction and extended to the bottom through a slot provided at the floor of the housing,
  • a fastening projection which is inserted into the fastening groove is formed integrally on the inner periphery of the first, second and third fastening links, respectively.
  • the air pressure driving element includes:
  • a first and second vertical driving link for connecting the first and second driving piston and the first and second driving bar integrally.
  • the piston locking means includes;
  • a housing assembled to the top outer periphery of the cylinder body of the air cylinder;
  • a spring for supporting the fastening link arranged between the rear side of each fastening link and the inner periphery of the housing, elastically;
  • the air lifting system further includes;
  • the air lifting system according to the present invention provides following effect.
  • the air lifting system according to the present invention can fix the piston, which supports objects, at the desired position by constraining the fastening groove which is provided on the outer periphery of the piston at the elevated position when the piston reaches while the piston lifts up object to support; and prevent the phenomenon that crack happens in the piston due to partial fatigue load because it can keep the fastening state of the piston strongly.
  • the air lifting system according to the present invention can fix the piston, which is elevated while lifting objects to support, firmly by using the piston locking means so that overload and/or overheating of the air pump can be prevented by stopping the operation of the air pump at the desired position to fix.
  • Fig. 1 shows a perspective view illustrating an air lifting system with a piston locking means according to the present invention
  • Fig. 2 shows a cross sectional view illustrating the piston locking means of the air lifting system according to a preferred embodiment of the present invention, showing the state that the piston is not locked;
  • Fig. 3 shows a cross sectional view illustrating the piston locking means of the air lifting system according to a preferred embodiment of the present invention, showing the state that the piston is locked;
  • Fig. 4 shows a plane view and a partial cross sectional view of the air cylinder of the air lifting system according to the present invention
  • Fig. 5a and 5b show cross sectional views showing ascending operation and descending operation of the piston of the air lifting system according to the present invention, respectively;
  • Fig. 6 shows a cross sectional view illustrating the piston locking means of the air lifting system according to another embodiment of the present invention, showing the state that the piston is not locked;
  • Fig. 7 shows a cross sectional view illustrating the piston locking means of the air lifting system according to an embodiment of the present invention, showing the state that the piston is locked.
  • the air lifting system according to the present invention to achieve the above mention object includes:
  • a moving frame for providing a first installation seat for air cylinder installation and a second installation seat for air pump installation in the front and rear sides, respectively, thereof and rolling wheels to move are provided thereto;
  • a piston where a plurality of fastening grooves are provided at an equal interval along the top-down direction on the outer periphery thereof;
  • an air cylinder with a cylinder body configured to contain the piston and provide a piston elevating pneumatic channel
  • a piston locking means for fixing the piston by locking operation with the fastening gloove of the piston at a desired position while the piston is elevated by the air pressure supplied into the pneumatic channel by the air pump.
  • the air lifting system according to the present invention is configured to move to a desired location and lift up objects to support, and more particularly, characterized in that it can fix the piston firmly at the desired position by constraining a fastening groove provided on the outer periphery of the piston after the piston is elevated to the desired position while the piston lifts up object to support.
  • the air lifting system includes a moving frame 100 where rolling wheels are provided at both sides and a connecting bar 108 to which a handle 109 is connected by hinge provided integrally at the rear end of the moving frame 100 for worker to push or pull the moving frame directly.
  • a first installation seat for the installation of the air cylinder 110 is provided at the front side of the moving frame 100 and a second installation seat for the installation of the air pump 120 is provided at the rear side of the moving frame 100.
  • first and second installation seats 102 and 104 are connected mutually by an air pressure line.
  • the air cylinder 110 includes a piston 112 with fastening groove 111 and a cylinder body 114 in which an elevating channel for the piston 112 and an air supplying channel for the elevation of the piston 112 are provided.
  • a head portion 118 to contact with the objects to support (objects to lift up) is provided at the top of the piston 112 and a hollowed body portion 119 is provided integrally at the bottom of the head portion 118.
  • fastening groove 111 in the form of the repeated saw tooth is provided at equal interval along the top-down direction on the outer periphery of the body portion 119.
  • the cylinder body 114 has the displacement that the inner cylinder body 115 is placed within the tube-typed outer cylinder body 116 to be overlapped each other.
  • a piston elevating pneumatic channel 130 is provided at the cylinder body 114.
  • the piston elevating pneumatic channel 130 consists of an ascending pneumatic channel 132, which extends straightly from the bottom to the top of the inner cylinder body 114 and leads to the bottom of the head portion 118, and a descending pneumatic channel 134, which extends from the bottom of the inner cylinder body 114 to the piston elevation guiding space 117 and leads to the body portion 119 of the piston 112.
  • the piston 112 is elevated by air pressure when the air pump 120 is driven and the piston 112 is fixed firmly at the desired position by the operation of the piston locking means 200.
  • the piston locking means 200 fixes the piston 112 which is elevated within the cylinder body 114 of the air cylinder 110 by the air pressure at the desired position firmly.
  • a housing 202 is assembled to the top outer periphery of the cylinder body 114 of the air cylinder 110, a fastening link element 210 which is inserted into the fastening groove 111 or separated from the fastening groove 111 is installed within the housing 202, and an air pressure driving means 220 which drives the fastening link element 210 toward fastening direction or releasing direction is installed in the bottom of the housing 202.
  • the first fastening link 211 and the second fastening link 212 which are in the shape of arch, are arranged at both sides of the inner periphery of the housing 202 to face each other.
  • the arched third fastening link 213 is arranged at the top of the first and second links 211 and 212, when saw in plain, a fastening projection 217 which is inserted into the fastening groove 111 is provided integrally to project at the inner periphery of the first through third locking links 211, 212 and 213.
  • first and second fastening links 211 and 212 that is, the top portion is connected by hinge to the both ends of the third fastening link 213, respectively.
  • a vertically-long guiding slot 218 is provided at the middle portion of the third fastening link 213, in which a guiding pin 219 to be fixed at the floor of the housing 202 is inserted, and the guiding pin 219 guides the fastening or releasing operation of the third fastening link 213.
  • each of the first and second driving bars 215 and 216 which extend through the slot 214 at the floor of the housing 202 toward the bottom of the housing 202 is connected to the other end, that is, the lower portion of the first and second fastening links 211 and 212, respectively.
  • An air pressure driving means 220 which moves the first and second driving bars 215 and 216 toward the piston fastening position or releasing position is connected to the bottom of the first and second driving bars 215 and 216.
  • the air pressure driving means 220 consists of a bidirectional air pressure cylinder 223 which is installed at the bottom of the housing 202, and a first and second driving piston 221 and 222 which are inserted in the bidirectional air pressure cylinder 223 and moves linearly in different direction.
  • first and second driving link 224 and 225 are connected to the first and second driving bars 215 and 216, respectively while the bottom of the first and second driving links 224 and 225 are connected to the outer ends of the first and second driving pistons 221 and 222, respectively.
  • Fig. 2 illustrates the releasing state of the piston locking means.
  • the first through third fastening links 211 ⁇ 213 are open to the outer periphery direction that is, the fastening projection 217 of the first through third fastening links 211 ⁇ 213 are pulled out from the fastening groove 111 of the piston 112.
  • the piston 112 is in the state that the it can be elevated by air pressure because the fastening projection 217 is not inserted into the fastening groove 111 of the piston 112.
  • Fig. 3 shows the state that the piston locking means is locked. As shown in Fig. 3, because air pressure supplied to the bidirectional air pressure cylinder 223 to lock while the first and second driving piston 221 and 222 is moved toward the inner direction, respectively, thus the first and second driving links 224 and 225 are moved toward inner direction.
  • the first and second driving bars 215 and 216 which are connected to the first and second driving links 224 and 225, respectively, moves from the outer side to the inner side of the slot 214 so that the first and second fastening links 211 and 212 are retracted toward the inner side, and also, the third fastening link 231 which is connected by hinge to the first and second fastening links 211 and 212 moves toward the inner side at the same time.
  • the guiding pin 219 which is fixed to the housing 202 moves from the inner side to the outer side in the guiding slot 218 of the third fastening link 213 so that the retracting movement of the third fastening link 213 is guided.
  • first through third fastening links 211 ⁇ 213 operates to retract toward the inner side from the state open toward the outer periphery and the fastening projection 217 of the first through third fastening links 211 ⁇ 213 are inserted into the fastening groove 111 of the piston 112 so that it locks the piston 112, the piston 112 becomes fixed firmly at the desired position.
  • the piston locking means in another embodiment according to the present invention is configured to fix the piston 112 at the desired position by constraining the fastening groove 111 of the piston 112.
  • the piston locking means in another embodiment according to the present invention consists of a housing 202 assembled to the outer periphery of the top of the cylinder body 114 of the air cylinder 110 and all the elements that moves toward outside to release and moves inside to fasten are installed integrally within the housing 202.
  • a plurality of fastening links 302 among elements for fastening or releasing the piston 112 are provided at the inner periphery of the housing 202 at equal interval and operates to be inserted or to be separated from the fastening groove 111 of the piston 112.
  • a spring 304 which supports the fastening link 302 elastically is installed, respectively, between the rear side of each fastening link 302 and the inner periphery of the housing 202.
  • a bar-typed driving bar 306 is connected to the bottom of the respective fastening link 302 integrally.
  • an air pressure cylinder 308 is installed on the outer periphery of the housing 202 and the lower portion of the driving bar 306 is connected to the piston 310 of the air pressure cylinder 303 integrally.
  • Fig. 6 illustrates a releasing state of the piston locking means. As shown in Fig. 7, because all the fastening links 302 are separated from the fastening groove 111, which is provided on the piston 112 of the air cylinder 110, the piston 112 is in the state that it can be elevated.
  • the air lifting system can fix the piston, which is elevated while lifting objects to support, firmly by constraining fastening groove which is provided on the outer periphery of the piston at the elevated position so that the piston can be fixed firmly at the desired position to fix.
  • moving frame 102 first installation seat
  • piston locking means 202 housing
  • fastening link elements 211 first fastening link
  • second driving piston 223 bidirectional air pressure cylinder
  • first driving link 225 second driving link

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Actuator (AREA)

Abstract

L'invention porte sur un système élévateur pneumatique possédant un moyen de verrouillage du piston apte à verrouiller le piston rigidement à la position que le piston a atteinte. Le système élévateur pneumatique comprend un moyen de verrouillage du piston qui peut immobiliser rigidement le piston, qui est élevé en même temps qu'il soulève des objets à supporter, en bloquant une gorge de fixation qui est ménagée sur la périphérie extérieure du piston à la position élevée.
PCT/KR2011/010251 2011-05-03 2011-12-28 Système élévateur pneumatique équipé d'un moyen de verrouillage du piston WO2012150753A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110041845A KR101069548B1 (ko) 2011-05-03 2011-05-03 피스톤 잠금수단을 갖는 에어 리프팅 대차 장치
KR10-2011-0041845 2011-05-03

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WO2012150753A1 true WO2012150753A1 (fr) 2012-11-08

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PCT/KR2011/010251 WO2012150753A1 (fr) 2011-05-03 2011-12-28 Système élévateur pneumatique équipé d'un moyen de verrouillage du piston

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KR (1) KR101069548B1 (fr)
WO (1) WO2012150753A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2792633A1 (fr) * 2013-04-17 2014-10-22 Herrmann AG Élévateur avec accouplement hydraulique des vérins de levage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230068571A (ko) 2021-11-11 2023-05-18 한양대학교 산학협력단 피스톤 락킹구조를 갖는 실린더장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0630793Y2 (ja) * 1987-08-06 1994-08-17 杉安工業株式会社 オイル駆動型オ−トリフトにおける下降防止用安全装置
JPH0740687U (ja) * 1993-12-28 1995-07-21 杉安工業株式会社 埋込み式車輛整備用リフト
WO1997012829A1 (fr) * 1995-10-06 1997-04-10 Koshak John W Dispositif servant a arreter un ascenseur
KR101010582B1 (ko) * 2010-07-05 2011-01-24 (주) 대진유압기계 조선블록 리프트

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6111199Y2 (fr) 1981-06-16 1986-04-09

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0630793Y2 (ja) * 1987-08-06 1994-08-17 杉安工業株式会社 オイル駆動型オ−トリフトにおける下降防止用安全装置
JPH0740687U (ja) * 1993-12-28 1995-07-21 杉安工業株式会社 埋込み式車輛整備用リフト
WO1997012829A1 (fr) * 1995-10-06 1997-04-10 Koshak John W Dispositif servant a arreter un ascenseur
KR101010582B1 (ko) * 2010-07-05 2011-01-24 (주) 대진유압기계 조선블록 리프트

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2792633A1 (fr) * 2013-04-17 2014-10-22 Herrmann AG Élévateur avec accouplement hydraulique des vérins de levage
US9528533B2 (en) 2013-04-17 2016-12-27 Herrmann Ag Lifting platform with hydraulic coupling of the lifting rams

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Publication number Publication date
KR101069548B1 (ko) 2011-10-05

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