CN102606553B - Shearing synchronous oil circuit for flash welding machine - Google Patents

Shearing synchronous oil circuit for flash welding machine Download PDF

Info

Publication number
CN102606553B
CN102606553B CN201210090429.5A CN201210090429A CN102606553B CN 102606553 B CN102606553 B CN 102606553B CN 201210090429 A CN201210090429 A CN 201210090429A CN 102606553 B CN102606553 B CN 102606553B
Authority
CN
China
Prior art keywords
oil cylinder
convex
oil
pushes away
hydraulic fluid
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.)
Active
Application number
CN201210090429.5A
Other languages
Chinese (zh)
Other versions
CN102606553A (en
Inventor
郦雪云
宋自帅
黄腾飞
朱海星
刘晓磊
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.)
Changzhou Ruitai Engineering Machinery Co., Ltd.
CRRC Qishuyan Institute Co Ltd
Original Assignee
Changzhou Ruitai Engineering Machinery Co Ltd
CRRC Qishuyan Institute 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 Changzhou Ruitai Engineering Machinery Co Ltd, CRRC Qishuyan Institute Co Ltd filed Critical Changzhou Ruitai Engineering Machinery Co Ltd
Priority to CN201210090429.5A priority Critical patent/CN102606553B/en
Publication of CN102606553A publication Critical patent/CN102606553A/en
Application granted granted Critical
Publication of CN102606553B publication Critical patent/CN102606553B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a shearing synchronous oil circuit for a flash welding machine, which comprises a first shearing cylinder, a second shearing cylinder, a three-position four-way reversing valve and a synchronous motor. The first shearing cylinder and the second shearing cylinder are respectively provided with a first cavity and a second cavity, the three-position four-way reversing valve is provided with a first oil port, a second oil port, a third oil port and a fourth oil port, the first oil port of the three-position four-way reversing valve is connected with an oil inlet circuit, the third oil port of the three-position four-way reversing valve is connected with an oil return circuit, both a first inlet and a second inlet at one end of the synchronous motor are communicated with the second oil port of the three-position four-way reversing valve, a first outlet and a second outlet at the other end of the synchronous motor are correspondingly communicated with the first cavities of the first shearing cylinder and the second shearing cylinder respectively, and both the second cavities of the first shearing cylinder and the second shearing cylinder are communicated with the fourth oil port of the three-position four-way reversing valve. By the aid of the shearing synchronous oil circuit, the volume of oil entering the two shearing cylinders can be equivalent during shearing, and the movement speeds of the two shearing cylinders can be uniform.

Description

Flash welder pushes away convex synchronous oil circuit
Technical field
The present invention relates to a kind of engineering machinery weldering rail equipment.
Background technique
The Tui Tu mechanism of portable flash welder is for automatically removing the overlap on rail at postwelding, it comprises two and pushes away convex oil cylinder, subrack and push away convex oil circuit.Push away in convex oil circuit and apply diverter valve, make to enter two hydraulic oil volumes pushing away convex oil cylinder equal, thus ensure two speed of stretching out consistent (namely oil cylinder is synchronous) pushing away convex oil cylinder, push away convex power and reach 475kN and can turn down overlap smoothly.Controlled to push away convex process by diverter valve, synchronization accuracy is lower, and in the uneven and unloaded stage at resistance, synchronous effect is poor; By severe outwork environmetal impact, two movement warps pushing away convex oil cylinder strengthen gradually.After some weldering rail equipment use a period of time, deviation exceedes 10% of total kilometres, pushes away convex process damage rail mother metal, affects quality of weld joint.
Summary of the invention
The object of the present invention is to provide and a kind ofly can make to push away in convex process that to enter two hydraulic oil volumes pushing away convex oil cylinder suitable, the flash welder that two movement velocitys pushing away convex oil cylinder are consistent pushes away convex synchronous oil circuit.
In order to achieve the above object, technological scheme of the present invention is, a kind of flash welder pushes away convex synchronous oil circuit, comprise first and push away convex oil cylinder, second pushes away convex oil cylinder and three position four-way directional control valve, described first pushes away convex oil cylinder, second pushes away convex oil cylinder all has the first chamber and the second chamber, described three position four-way directional control valve has the first hydraulic fluid port, second hydraulic fluid port, 3rd hydraulic fluid port and the 4th hydraulic fluid port, first hydraulic fluid port of three position four-way directional control valve connects oil-feed oil circuit, 3rd hydraulic fluid port connects oil return circuit, also comprise syncmotor, first import of described syncmotor one end is all communicated with the second hydraulic fluid port of three position four-way directional control valve with the second import, first outlet of the syncmotor the other end and second exports and pushes away the first chamber that convex oil cylinder and second pushes away convex oil cylinder respectively with corresponding first and be communicated with, first pushes away the second chamber that convex oil cylinder and second pushes away convex oil cylinder is all communicated with the 4th hydraulic fluid port of three position four-way directional control valve.
In order to accumulation of guarding against deviations, also comprise the first one-way overflow valve and the second one-way overflow valve, the first outlet and first that one end of described first one-way overflow valve is connected to syncmotor pushes away between the first chamber of convex oil cylinder, and the other end connects the oil return circuit of return opening; The second outlet and second that one end of described second one-way overflow valve is connected to syncmotor pushes away between the first chamber of convex oil cylinder, and the other end connects the oil return circuit of return opening.
Described syncmotor is connected in parallel by the motor that two discharge capacities are equal and forms.
After adopting technique scheme, owing to have employed the accurate shunting means of syncmotor, therefore, can ensure to push away in convex process that to enter two hydraulic oil volumes pushing away convex oil cylinder suitable, two movement velocitys pushing away convex oil cylinder are consistent, and synchronization accuracy is high, thus improves quality of weld joint.In addition, the present invention also has the following advantages: syncmotor volume is little, lightweight, easy for installation; Synchronism does not affect by the load of system, the factor such as flow and pressure; Requiring that synchronous two push away without the need to using various sensor to carry out detecting, compare and following the tracks of on convex oil cylinder, its cost and complexity are far below adopting the servo or ratio control system that price is high.
Accompanying drawing explanation
The embodiment provided below in conjunction with accompanying drawing is described in more detail the present invention.
Fig. 1 is the structural representation that flash welder of the present invention pushes away convex synchronous oil circuit first embodiment;
Fig. 2 is the structural representation that flash welder of the present invention pushes away convex synchronous oil circuit second embodiment.
Embodiment
As shown in Figure 1, first embodiment of the present invention, a kind of flash welder pushes away convex synchronous oil circuit, comprise first and push away convex oil cylinder 1, second pushes away convex oil cylinder 2 and three position four-way directional control valve 4, described first pushes away convex oil cylinder 1, second pushes away convex oil cylinder 2 all has the first chamber 1-1, 2-1 and the second chamber 1-2, 2-2, described three position four-way directional control valve 4 has the first hydraulic fluid port P, second hydraulic fluid port A, 3rd hydraulic fluid port T and the 4th hydraulic fluid port B, first hydraulic fluid port P of three position four-way directional control valve 4 connects oil-feed oil circuit, 3rd hydraulic fluid port T connects oil return circuit, also comprise syncmotor 3, the first import 3-1 of described syncmotor 3 one end is all communicated with the second hydraulic fluid port A of three position four-way directional control valve 4 with the second import 3-2, first outlet 3-3 and second outlet 3-4 of syncmotor 3 the other end pushes away the first chamber 1-1 that convex oil cylinder 1 and second pushes away convex oil cylinder 2 respectively with corresponding first, 2-1 is communicated with, first pushes away the second chamber 1-2 that convex oil cylinder 1 and second pushes away convex oil cylinder 2, 2-2 is all communicated with the 4th hydraulic fluid port B of three position four-way directional control valve 4.
As shown in Figure 1, described syncmotor 3 can adopt the hydraulic synchronous motor that market is purchased, and also can be connected in parallel by the motor that two discharge capacities are equal forms.
As shown in Figure 2, second embodiment of the present invention, a kind of flash welder pushes away convex synchronous oil circuit, comprise first and push away convex oil cylinder 1, second pushes away convex oil cylinder 2 and three position four-way directional control valve 4, described first pushes away convex oil cylinder 1, second pushes away convex oil cylinder 2 all has the first chamber 1-1, 2-1 and the second chamber 1-2, 2-2, described three position four-way directional control valve 4 has the first hydraulic fluid port P, second hydraulic fluid port A, 3rd hydraulic fluid port T and the 4th hydraulic fluid port B, first hydraulic fluid port P of three position four-way directional control valve 4 connects oil-feed oil circuit, 3rd hydraulic fluid port T connects oil return circuit, also comprise syncmotor 3, the first import 3-1 of described syncmotor 3 one end is all communicated with the second hydraulic fluid port A of three position four-way directional control valve 4 with the second import 3-2, first outlet 3-3 and second outlet 3-4 of syncmotor 3 the other end pushes away the first chamber 1-1 that convex oil cylinder 1 and second pushes away convex oil cylinder 2 respectively with corresponding first, 2-1 is communicated with, first pushes away the second chamber 1-2 that convex oil cylinder 1 and second pushes away convex oil cylinder 2, 2-2 is all communicated with the 4th hydraulic fluid port B of three position four-way directional control valve 4, also comprise the first one-way overflow valve 5 and the second one-way overflow valve 6, the first outlet 3-3 and first that one end of described first one-way overflow valve 5 is connected to syncmotor 3 pushes away between the first chamber 1-1 of convex oil cylinder 1, the other end connects the oil return circuit of return opening L, the second outlet 3-4 and second that one end of described second one-way overflow valve 6 is connected to syncmotor 3 pushes away between the first chamber 2-1 of convex oil cylinder 2, and the other end connects the oil return circuit of return opening L.
It is variant in cylinder diameter, stroke, internal leakage etc. that cause two pushes away convex oil cylinder 1,2; when oil inlet quantity is suitable also there is small deviation in the extrusion of two oil cylinders unavoidably; after adopting the first one-way overflow valve 5 and the second one-way overflow valve 6; deviation can be eliminated; stop the accumulation of deviation; there is the effect of safety protective valve simultaneously, thus strengthen the durability of Tui Tu mechanism.
As shown in Figure 2; for second embodiment of the invention; action principle of the present invention is as follows: when the right position of three position four-way directional control valve 4 acts on; start to push away convex process; first hydraulic fluid port P connects the second hydraulic fluid port A, and pressure oil enters syncmotor 3, and the first one-way overflow valve 5 and the second one-way overflow valve 6 are as safety protective valve; under working pressure, the first one-way overflow valve 5 and the second one-way overflow valve 6 are closed.The motor that syncmotor 3 is equal to two discharge capacities equal is connected in parallel, rotating speed is equal at any time, the hydraulic oil volume flowing through pipeline A1, A2 from syncmotor 3 is equal, flowing to the first the first chamber 1-1 and second pushing away convex oil cylinder 1, to push away the hydraulic oil volume of the first chamber 2-1 of convex oil cylinder 2 also equal, because first pushes away convex oil cylinder 1 and second to push away the cylinder diameter of convex oil cylinder 2 identical, when pushing away convex, two push away convex oil cylinder 1,2 and synchronously stretch out.When the left position of three position four-way directional control valve 4 acts on, the first hydraulic fluid port P connects the 4th hydraulic fluid port B, and two push away convex oil cylinder 1,2 and bounce back in the unloaded state.Return fuel tank after first the first chamber 1-1 and second hydraulic oil pushed away in the first chamber 2-1 of convex oil cylinder 2 pushing away convex oil cylinder 1 enters syncmotor 3, achieve two and push away convex oil cylinder 1,2 and synchronously bounce back.Owing to entering the first the second chamber 1-2 and second pushing away convex oil cylinder 1, to push away the hydraulic oil volume of the second chamber 2-2 of convex oil cylinder 2 unrestricted, first pushes away convex oil cylinder 1, second pushes away convex oil cylinder 2 and all can retract to the end, return to this push away convex circulation start before state, can eliminate and avoid the deviation on oil cylinder stroke to accumulate.

Claims (2)

1. a flash welder pushes away convex synchronous oil circuit, comprise first and push away convex oil cylinder (1), second pushes away convex oil cylinder (2) and three position four-way directional control valve (4), described first pushes away convex oil cylinder (1), second pushes away convex oil cylinder (2) all has the first chamber (1-1, 2-1) He the second chamber (1-2, 2-2), described three position four-way directional control valve (4) has the first hydraulic fluid port (P), second hydraulic fluid port (A), 3rd hydraulic fluid port (T) and the 4th hydraulic fluid port (B), first hydraulic fluid port (P) of three position four-way directional control valve (4) connects oil-feed oil circuit, 3rd hydraulic fluid port (T) connects oil return circuit, it is characterized in that:
A, also comprise syncmotor (3),
First import (3-1) of b, described syncmotor (3) one end is all communicated with second hydraulic fluid port (A) of three position four-way directional control valve (4) with the second import (3-2), first outlet (3-3) of syncmotor (3) the other end and second exports (3-4) and pushes away the first chamber (1-1,2-1) that convex oil cylinder (1) and second pushes away convex oil cylinder (2) respectively with corresponding first and be communicated with, first pushes away the second chamber (1-2,2-2) that convex oil cylinder (1) and second pushes away convex oil cylinder (2) is all communicated with the 4th hydraulic fluid port (B) of three position four-way directional control valve (4)
c,also comprise the first one-way overflow valve (5) and the second one-way overflow valve (6), the first outlet (3-3) and first that one end of described first one-way overflow valve (5) is connected to syncmotor (3) pushes away between first chamber (1-1) of convex oil cylinder (1), the oil return circuit of the other end connection return opening (L); The second outlet (3-4) and second that one end of described second one-way overflow valve (6) is connected to syncmotor (3) pushes away between first chamber (2-1) of convex oil cylinder (2), the oil return circuit of the other end connection return opening (L).
2. flash welder according to claim 1 pushes away convex synchronous oil circuit, it is characterized in that: described syncmotor (3) is connected in parallel by the motor that two discharge capacities are equal and forms.
CN201210090429.5A 2012-03-31 2012-03-31 Shearing synchronous oil circuit for flash welding machine Active CN102606553B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210090429.5A CN102606553B (en) 2012-03-31 2012-03-31 Shearing synchronous oil circuit for flash welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210090429.5A CN102606553B (en) 2012-03-31 2012-03-31 Shearing synchronous oil circuit for flash welding machine

Publications (2)

Publication Number Publication Date
CN102606553A CN102606553A (en) 2012-07-25
CN102606553B true CN102606553B (en) 2015-02-11

Family

ID=46524219

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210090429.5A Active CN102606553B (en) 2012-03-31 2012-03-31 Shearing synchronous oil circuit for flash welding machine

Country Status (1)

Country Link
CN (1) CN102606553B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1018292A2 (en) * 1999-01-09 2000-07-12 GKN Walterscheid GmbH Tractor hitch lower link lifting device
CN201344159Y (en) * 2008-12-14 2009-11-11 天水锻压机床有限公司 Combined oil cylinder synchronous hydraulic control system
CN101602138A (en) * 2009-06-30 2009-12-16 常州市瑞泰工程机械有限公司 Steel rail flash welding machine
CN101709727A (en) * 2009-11-25 2010-05-19 深圳市凯卓立液压设备有限公司 Control loop for synchronizing multiple cylinders with double-group hydraulic flow divider
CN101905242A (en) * 2010-07-09 2010-12-08 太原重工股份有限公司 Roller-lifting proportional and synchronous hydraulic control system
CN202579382U (en) * 2012-03-31 2012-12-05 常州市瑞泰工程机械有限公司 Synchronous shearing oil circuit of flash welding machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1018292A2 (en) * 1999-01-09 2000-07-12 GKN Walterscheid GmbH Tractor hitch lower link lifting device
CN201344159Y (en) * 2008-12-14 2009-11-11 天水锻压机床有限公司 Combined oil cylinder synchronous hydraulic control system
CN101602138A (en) * 2009-06-30 2009-12-16 常州市瑞泰工程机械有限公司 Steel rail flash welding machine
CN101709727A (en) * 2009-11-25 2010-05-19 深圳市凯卓立液压设备有限公司 Control loop for synchronizing multiple cylinders with double-group hydraulic flow divider
CN101905242A (en) * 2010-07-09 2010-12-08 太原重工股份有限公司 Roller-lifting proportional and synchronous hydraulic control system
CN202579382U (en) * 2012-03-31 2012-12-05 常州市瑞泰工程机械有限公司 Synchronous shearing oil circuit of flash welding machine

Also Published As

Publication number Publication date
CN102606553A (en) 2012-07-25

Similar Documents

Publication Publication Date Title
CN202579382U (en) Synchronous shearing oil circuit of flash welding machine
CN105545833B (en) A kind of energy-saving lathe hydraulic power unit and its drive method
CN102606553B (en) Shearing synchronous oil circuit for flash welding machine
CN202571585U (en) Push projection oil way of flash welding machine
CN104314924A (en) Hydraulic cylinder testing bed system
CN203641145U (en) Hydraulic block capable of realizing double pistons retreating in conveying system
CN202040145U (en) Multistage locking cylinder
CN104196813A (en) Fast die closingoil cylinder used for high-speed die-casting machine
CN105757016A (en) Hydraulic control system of supercharging device
CN201776935U (en) Hydraulic machine with two sets of hydraulic system structures
CN103883743B (en) Extrusion press liquid-filling valve and comprise the extrusion press of this liquid-filling valve
CN104481944B (en) Depressurizing system and engineering machinery
CN203962545U (en) A kind of quick die cylinder for high speed die casting machine
CN105181475A (en) Impulse test system supercharged through servo electric cylinder
CN203365246U (en) Oil pressure tolerance detecting device
CN104460726A (en) Pressure control system and method with pressure test medium capable of conducting bidirectional flow
RU2457951C2 (en) Hydraulic press
CN204692230U (en) There is the oil cylinder of two step velocitys
RU2601723C1 (en) Welding device for welding pipes with heating arc controlled by magnetic field
CN103671315B (en) Concrete pumping system and concrete pumping machinery
CN102287418B (en) Hydraulic cylinder control device capable of realizing accurate half-way stoppage
CN205138903U (en) Servo booster and pulse testing system who contains it
CN103508337A (en) Plug pin mechanism control system and crane
CN204061387U (en) A kind of safety door protective gear
CN202106235U (en) Hydraulic control device of numerical control hydraulic lathe

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

Address after: 213022, Changzhou, Jiangsu New District hi tech park, building B, block

Co-patentee after: CRRC QISHUYAN INSTITUTE CO., LTD.

Patentee after: Changzhou Ruitai Engineering Machinery Co., Ltd.

Address before: 213022, Changzhou, Jiangsu New District hi tech park, building B, block

Co-patentee before: Nanche Qisuyan Engine and Vehicle Technics Institute Co., Ltd.

Patentee before: Changzhou Ruitai Engineering Machinery Co., Ltd.

CP03 Change of name, title or address