CN1600671A - Latch interlock and interlock method of stretching control system with multi section arms and single oil cylinder - Google Patents

Latch interlock and interlock method of stretching control system with multi section arms and single oil cylinder Download PDF

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Publication number
CN1600671A
CN1600671A CN 200410050579 CN200410050579A CN1600671A CN 1600671 A CN1600671 A CN 1600671A CN 200410050579 CN200410050579 CN 200410050579 CN 200410050579 A CN200410050579 A CN 200410050579A CN 1600671 A CN1600671 A CN 1600671A
Authority
CN
China
Prior art keywords
pin
oil cylinder
withdrawal
horizontal
normal
Prior art date
Application number
CN 200410050579
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Chinese (zh)
Inventor
屈福政
孙铁兵
张宗山
徐青山
Original Assignee
大连理工大学
蚌埠市振冲安利工程机械有限公司
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.)
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Publication date
Application filed by 大连理工大学, 蚌埠市振冲安利工程机械有限公司 filed Critical 大连理工大学
Priority to CN 200410050579 priority Critical patent/CN1600671A/en
Publication of CN1600671A publication Critical patent/CN1600671A/en

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Abstract

A holt interlocking device for single cylinder telescopic control system consists of vertical bolt and level bolt. The interlocking device is used to guarantee that the other bolt can not be drawn back when one bolt is drawn back for avoiding dangerous circumstances that both bolts are drawn back at the same time. The safety operation for automobile hoist applied with single cylinder telescopic technique can be guaranteed by utilizing said device.

Description

The latch interlock and the interlock method thereof of single oil cylinder list oil cylinder extension and contraction control system
Technical field
The invention belongs to handling machinery design and manufacturing technology field, particularly relate to the latch interlock and the interlock method thereof of the single oil cylinder list oil cylinder extension and contraction control system in the car hosit.
Background technology
The armed lever of car hosit generally is socketed to form by single oil cylinder, adopts usually and place telescopic oil cylinder in armed lever, realizes the flexible of single oil cylinder by flexible steel rope and pulley.Emerging a kind of telescopic boom technology adopts single oil cylinder and latch, realizes stretching out successively and withdrawing of single oil cylinder.Latch comprises horizontal pin and normal pin, is arranged in the cylinder barrel head of telescopic oil cylinder.Horizontal pin is used for realizing that telescopic oil cylinder is connected with the arm joint: every joint arm afterbody is provided with horizontal pin-and-hole, and when horizontal pin was aimed at and inserted horizontal pin-and-hole, telescopic oil cylinder was connected with the arm joint.Normal pin be used for realizing adjacent two arms joint be connected: every joint arm afterbody is provided with normal pin, and being enclosed within on the alternate arm joint on this joint arm has some vertical pin-and-holes, and when normal pin aligned perpendicular pin-and-hole and after inserting, adjacent two save arms and are connected.At work, promptly break away from the situation of pin-and-hole if normal pin and horizontal pin are withdrawn simultaneously, the arm joint will neither be connected with telescopic oil cylinder, also is not connected with the alternate arm joint, and the arm joint will lose constraint, owing to action of gravity is glided.This situation is a danger close, can cause major accident.Therefore the mutual interlocking gear of horizontal pin and normal pin need be set: when horizontal pin was withdrawn, normal pin can not be withdrawn; When normal pin was withdrawn, horizontal pin can not be withdrawn.Existent method is: horizontal pin and normal pin 1 are not worked by the electric signal that makes both simultaneously by electric signal and solenoid directional control valve control, realize electrical interlocks; Adopt the three-position electromagnetic change-over valve, the withdrawal action of two pins is by two working positions controls of solenoid directional control valve, when solenoid directional control valve during at a certain working position, cuts off the fuel feeding of another pin withdrawal oil cylinder, realizes the hydraulic pressure interlocking.Obviously said method can avoid the situation of two pins withdrawal simultaneously to take place to a certain extent, but under hydraulic pressure or electrical accident situation, the two pins situation of withdrawal simultaneously still may occur.This just is starved of the generating means that can effectively prevent this situation.
Summary of the invention
Purpose of the present invention has just provided a kind of latch interlock and interlock method thereof of realizing the car hosit single oil cylinder list oil cylinder extension and contraction control system of the reliable interlocking that horizontal pin and normal pin withdrawal are moved.
Technical scheme of the present invention is: the latch interlock of single oil cylinder list oil cylinder extension and contraction control system, form by normal pin 1, normal pin withdrawal oil cylinder 7, vertical interlocking plunger 8, horizontal pin 2, horizontal pin withdrawal oil cylinder 9, horizontal interlocking plunger 10, the piston rod of normal pin withdrawal oil cylinder 7 connects normal pin 1 by arm-tie 6, the piston rod of horizontal pin withdrawal oil cylinder 9 connects horizontal pin 2, the piston rod offside of normal pin withdrawal oil cylinder 7 is provided with vertical interlocking plunger 8, and the piston rod offside of horizontal pin withdrawal oil cylinder 9 is provided with horizontal interlocking plunger 10.
Cylinder barrel head at telescopic oil cylinder 12 is connected with horizontal pin withdrawal oil cylinder 9 and normal pin withdrawal oil cylinder 7, and the two axis arranged is in a plane.Piston rod end in the horizontal pin withdrawal oil cylinder 9 is as horizontal pin 2, when horizontal pin 2 stretches out under spring 14 promotes and enters the horizontal pin-and-hole of arm joint 11, telescopic oil cylinder 12 saves 11 pin joints with arm, and when horizontal pin 2 was withdrawn under piston actuated, telescopic oil cylinder 12 broke away from pin joint with arm joint 11.Piston rod end in the normal pin withdrawal oil cylinder 7 connects arm-tie 6, when arm-tie 6 moves down under piston actuated, arm-tie 6 pulling normal pins 1 move down, arm joint 11 breaks away from pin joint with arm joint 15, when on arm-tie 6 is under spring 13 promotes, moving, normal pin 1 moves under spring 5 promotions, and arm joint 11 saves 15 pin joints with arm.
It is horizontal interlocking plunger 10 that piston rod offside in the horizontal pin withdrawal oil cylinder 9 is shaped on a cylinder, and it is vertical interlocking plunger 8 that the piston rod offside in the normal pin withdrawal oil cylinder 7 is shaped on a cylinder.Two interlocking plungers are removable in pin-and-hole separately, and two pin-and-hole diameters are identical, and vertically communicate at the A point.The length of two interlocking plungers should satisfy following condition: when horizontal pin 2 and normal pin 1 all stretched out, interlocking plunger 8 and 10 did not all enter the two pin-and-holes zone that communicates, and this moment, horizontal pin 2 or normal pin 1 can be carried out the withdrawal action; After horizontal pin 2 or normal pin 1 had been carried out the withdrawal action, its interlocking plunger should enter the two pin-and-holes zone that communicates, and stopped that another interlocking plunger enters the two pin-and-holes zone that communicates, and prevented that another pin from carrying out the withdrawal action.As above realized withdrawal reliable in action mechanical interlocked of horizontal pin 2 and normal pin 1.
Hydraulic control system comprises hose reel 4,3-position 4-way solenoid directional control valve 3, horizontal pin withdrawal oil cylinder 9, normal pin withdrawal oil cylinder 7.Hose reel 4 is installed in the basic arm afterbody, the P mouth that one road pipeline provides control oil to connect 3-position 4-way solenoid directional control valve 3, the O mouth that another road provides oil return to connect 3-position 4-way solenoid directional control valve 3.3-position 4-way solenoid directional control valve 3 is a Y type meta function.After the 9 pipeline parallel connections of two horizontal pin withdrawal oil cylinders, connect the A mouth of 3-position 4-way solenoid directional control valve 3.After the 7 pipeline parallel connections of two normal pin withdrawal oil cylinders, connect the B mouth of 3-position 4-way solenoid directional control valve 3.When 3-position 4-way solenoid directional control valve 3 metas, two groups of withdrawal cylinder rod chambers pass through the O mouth oil sump tank of 3-position 4-way solenoid directional control valve 3, and two groups of piston rods stretch out under the effect of oil cylinder inner spring, drive horizontal pin 2 and normal pin 1 and stretch out.When the DT1 of 3-position 4-way solenoid directional control valve 3 energising, horizontal pin withdrawal oil cylinder 9 logical control oil, horizontal pin 2 withdrawals, normal pin withdrawal oil cylinder 7 oil sump tanks, normal pin 1 keeps stretching out state.When the DT2 of 3-position 4-way solenoid directional control valve 3 energising, normal pin withdrawal oil cylinder 7 logical control oil, normal pin 1 withdrawal, horizontal pin withdrawal oil cylinder 9 oil sump tanks, horizontal pin 2 keeps stretching out state.
The beneficial effect that the present invention reached is: pass through mechanical interlock, can realize the reliable interlocking of horizontal pin 2 and normal pin 1 in the single cylinder telescopic system, guaranteed the work safety of the car hosit of the flexible technology of employing single cylinder, avoid the accident generation, also reduced the reliability requirement of hydraulic pressure and electric system simultaneously.
Description of drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is a constructional drawing of the present invention.
Fig. 2 is the hydraulic schematic diagram of invention.
Among the figure: 1. normal pin, 2. horizontal pin, 3. solenoid directional control valve, 4. hydraulic hose reel, 5. spring, 6. arm-tie, 7. normal pin withdrawal oil cylinder, 8. vertical interlocking plunger, 9. horizontal pin withdrawal oil cylinder, 10. horizontal interlocking plunger, 11. the arm joint, 12. telescopic oil cylinders, 13. springs, 14. springs, 15. arms joint.
The specific embodiment
The piston rod of normal pin withdrawal oil cylinder 7 connects normal pin 1 by arm-tie 6, the piston rod of horizontal pin withdrawal oil cylinder 9 connects horizontal pin 2, the piston rod offside of normal pin withdrawal oil cylinder 7 is provided with vertical interlocking plunger 8, and the piston rod offside of horizontal pin withdrawal oil cylinder 9 is provided with horizontal interlocking plunger 10.
When two equal no powers of electromagnet of solenoid directional control valve 3, the piston rod of normal pin withdrawal oil cylinder 7 and horizontal pin withdrawal oil cylinder 9 stretches out respectively under spring 13 and 14 effects.Horizontal pin 2 stretches out and inserts in the horizontal pin-and-hole of arm joint 11, and telescopic oil cylinder 12 saves 11 pin joints with arm.The piston rod of normal pin withdrawal oil cylinder 7 connects arm-tie 6, and when its piston rod stretched out, 6 pairs of normal pins 1 of arm-tie did not have position constraint, and normal pin 1 stretches out under spring 5 effects, and arm joint 11 saves 15 pin joints with arm.
When the DT1 of solenoid directional control valve 3 electromagnet is switched on, the 9 rod chamber oil-feeds of horizontal pin withdrawal oil cylinder, horizontal pin 2 withdrawals, telescopic oil cylinder 12 breaks away from arm joint 11 and is connected.The horizontal interlocking plunger 10 of horizontal pin 2 other ends enters the zone that communicates of two interlocking plunger pin-and-holes simultaneously, this moment is if normal pin 1 is withdrawn under mechanical external force or the situation of normal pin withdrawal oil cylinder 7 rod chamber oil-feeds, because horizontal interlocking plunger 10 has entered the zone that communicates of two pin-and-holes, stop that vertical interlocking plunger 8 enters, so normal pin 1 can not be withdrawn.
When the DT2 of solenoid directional control valve 3 electromagnet is switched on, the 7 rod chamber oil-feeds of normal pin withdrawal oil cylinder, normal pin 1 withdrawal, arm joint 11 breaks away from pin joint with arm joint 15.The vertical interlocking plunger 8 of the piston other end of the oil cylinder 7 of normal pin withdrawal simultaneously enters the zone that communicates of two interlocking plunger pin-and-holes, this moment is if horizontal pin is withdrawn under mechanical external force or the situation of horizontal pin withdrawal cylinder rod chamber oil-feed, because vertical interlocking plunger 8 has entered the zone that communicates of two pin-and-holes, barrier level interlocking plunger 10 enters, so horizontal pin 2 can not be withdrawn.

Claims (3)

1. the latch interlock of single oil cylinder list oil cylinder extension and contraction control system, it is characterized in that, by normal pin (1), normal pin withdrawal oil cylinder (7), vertical interlocking plunger (8), horizontal pin (2), horizontal pin withdrawal oil cylinder (9), horizontal interlocking plunger (10) is formed, the piston rod of normal pin withdrawal oil cylinder (7) connects normal pin (1) by arm-tie (6), the piston rod of horizontal pin withdrawal oil cylinder (9) connects horizontal pin (2), the piston rod offside of normal pin withdrawal oil cylinder (7) is provided with vertical interlocking plunger (8), and the piston rod offside of horizontal pin withdrawal oil cylinder (9) is provided with horizontal interlocking plunger (10).
2. use the latch interlock of the described single oil cylinder list of claim 1 oil cylinder extension and contraction control system to realize the latch interlock method, it is characterized in that, the axis arranged of horizontal pin withdrawal oil cylinder (9) and normal pin withdrawal oil cylinder (7) is in a plane, move in the pin-and-hole that horizontal interlocking plunger (10) and vertical interlocking plunger (8) be identical at two diameters respectively, vertically communicate, the length of two interlocking plungers satisfies following condition: when horizontal pin (2) and normal pin (1) when all stretching out, interlocking plunger (8) and (10) all do not enter the two pin-and-holes zone that communicates; After horizontal pin (2) or normal pin (1) had been carried out the withdrawal action, its interlocking plunger should enter the two pin-and-holes zone that communicates.
3. the latch interlock method of single oil cylinder list oil cylinder extension and contraction control according to claim 2 system, it is characterized in that, after horizontal pin (2) or normal pin (1) have been carried out the withdrawal action, its interlocking plunger should enter the two pin-and-holes zone that communicates, stop that another interlocking plunger enters the two pin-and-holes zone that communicates, prevent that another pin from carrying out the withdrawal action; Realized withdrawal reliable in action mechanical interlocked of horizontal pin (2) and normal pin (1).
CN 200410050579 2004-10-12 2004-10-12 Latch interlock and interlock method of stretching control system with multi section arms and single oil cylinder CN1600671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200410050579 CN1600671A (en) 2004-10-12 2004-10-12 Latch interlock and interlock method of stretching control system with multi section arms and single oil cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200410050579 CN1600671A (en) 2004-10-12 2004-10-12 Latch interlock and interlock method of stretching control system with multi section arms and single oil cylinder

Publications (1)

Publication Number Publication Date
CN1600671A true CN1600671A (en) 2005-03-30

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101214912B (en) * 2008-01-21 2010-06-02 长沙中联重工科技发展股份有限公司 Longitudinal single swing link type carrying pin plug mechanism for crane
CN101850935A (en) * 2010-06-22 2010-10-06 三一汽车起重机械有限公司 Single-cylinder pin type telescopic arm device and pin interlocking device
CN102050393A (en) * 2010-12-22 2011-05-11 三一汽车起重机械有限公司 Telescopic crane and single-cylinder plug pin mechanism
CN102153023A (en) * 2011-04-07 2011-08-17 大连理工大学 Safety pin interlocking device for crane, single cylinder safety pin type telescopic arm and crane
CN101723262B (en) * 2008-10-15 2011-09-14 徐州重型机械有限公司 Control system of telescopic boom bolt mechanism
CN102431900A (en) * 2011-12-20 2012-05-02 中联重科股份有限公司 Control system of bolt mechanism and crane
CN101481070B (en) * 2008-01-09 2012-07-11 神钢起重机株式会社 Telescopic boom
CN102619794A (en) * 2012-03-28 2012-08-01 三一汽车起重机械有限公司 Single-cylinder bolt expansion and contraction control system and construction machine
CN103058078A (en) * 2013-01-17 2013-04-24 大连理工大学 Single-cylinder plug type retractable arm and hydraulic plug interlocking device thereof
CN103318783A (en) * 2013-06-24 2013-09-25 郑州新大方重工科技有限公司 Truss type telescopic boom and crane comprising truss type telescopic boom
CN108698806A (en) * 2016-03-03 2018-10-23 株式会社多田野 Telescoping mechanism

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101481070B (en) * 2008-01-09 2012-07-11 神钢起重机株式会社 Telescopic boom
CN101214912B (en) * 2008-01-21 2010-06-02 长沙中联重工科技发展股份有限公司 Longitudinal single swing link type carrying pin plug mechanism for crane
CN101723262B (en) * 2008-10-15 2011-09-14 徐州重型机械有限公司 Control system of telescopic boom bolt mechanism
CN101850935A (en) * 2010-06-22 2010-10-06 三一汽车起重机械有限公司 Single-cylinder pin type telescopic arm device and pin interlocking device
CN101850935B (en) * 2010-06-22 2013-03-06 三一汽车起重机械有限公司 Single-cylinder pin type telescopic arm device and pin interlocking device
WO2011160583A1 (en) * 2010-06-22 2011-12-29 湖南三一智能控制设备有限公司 Single-cylinder pin type telescopic arm device and pin interlocking device
CN102050393A (en) * 2010-12-22 2011-05-11 三一汽车起重机械有限公司 Telescopic crane and single-cylinder plug pin mechanism
CN102050393B (en) * 2010-12-22 2012-10-03 三一汽车起重机械有限公司 Telescopic crane and single-cylinder plug pin mechanism
CN102153023B (en) * 2011-04-07 2013-09-25 大连理工大学 Safety pin interlocking device for crane, single cylinder safety pin type telescopic arm and crane
CN102153023A (en) * 2011-04-07 2011-08-17 大连理工大学 Safety pin interlocking device for crane, single cylinder safety pin type telescopic arm and crane
CN102431900A (en) * 2011-12-20 2012-05-02 中联重科股份有限公司 Control system of bolt mechanism and crane
WO2013091425A1 (en) * 2011-12-20 2013-06-27 中联重科股份有限公司 Bolt mechanism control system and crane
CN102619794A (en) * 2012-03-28 2012-08-01 三一汽车起重机械有限公司 Single-cylinder bolt expansion and contraction control system and construction machine
CN102619794B (en) * 2012-03-28 2014-12-10 三一汽车起重机械有限公司 Single-cylinder bolt expansion and contraction control system and construction machine
CN103058078A (en) * 2013-01-17 2013-04-24 大连理工大学 Single-cylinder plug type retractable arm and hydraulic plug interlocking device thereof
CN103058078B (en) * 2013-01-17 2015-01-21 大连理工大学 Single-cylinder plug type retractable arm and hydraulic plug interlocking device thereof
CN103318783A (en) * 2013-06-24 2013-09-25 郑州新大方重工科技有限公司 Truss type telescopic boom and crane comprising truss type telescopic boom
CN108698806A (en) * 2016-03-03 2018-10-23 株式会社多田野 Telescoping mechanism

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