CN202579382U - Synchronous shearing oil circuit of flash welding machine - Google Patents

Synchronous shearing oil circuit of flash welding machine Download PDF

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Publication number
CN202579382U
CN202579382U CN 201220129284 CN201220129284U CN202579382U CN 202579382 U CN202579382 U CN 202579382U CN 201220129284 CN201220129284 CN 201220129284 CN 201220129284 U CN201220129284 U CN 201220129284U CN 202579382 U CN202579382 U CN 202579382U
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CN
China
Prior art keywords
oil cylinder
protruding
oil
pushes away
hydraulic fluid
Prior art date
Application number
CN 201220129284
Other languages
Chinese (zh)
Inventor
郦雪云
宋自帅
黄腾飞
朱海星
刘晓磊
Original Assignee
常州市瑞泰工程机械有限公司
南车戚墅堰机车车辆工艺研究所有限公司
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Publication date
Application filed by 常州市瑞泰工程机械有限公司, 南车戚墅堰机车车辆工艺研究所有限公司 filed Critical 常州市瑞泰工程机械有限公司
Priority to CN 201220129284 priority Critical patent/CN202579382U/en
Application granted granted Critical
Publication of CN202579382U publication Critical patent/CN202579382U/en

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Abstract

The utility model discloses a synchronous shearing oil circuit of a flash welding machine. The synchronous shearing oil circuit comprises a first shearing cylinder, a second shearing cylinder, a three-position four-way reversing valve and a synchronous motor. Each of the first shearing cylinder and the second shearing cylinder is 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 the fourth oil port, the first oil port of the three-position four-way reversing valve is connected with an oil inlet circuit, and the third oil port is connected with an oil return circuit. 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 respectively communicated with the first cavity of the first shearing cylinder and the first cavity of the second shearing cylinder, and both the second cavity of the first shearing cylinder and the second cavity of the second shearing cylinder are communicated with the fourth oil port of the three-position four-way reversing valve. With the synchronous shearing oil circuit, volumes of oil in the two shearing cylinders are equal during shearing, so that movement speeds of the two shearing cylinders can be consistent.

Description

A kind of flash welder pushes away protruding synchronous oil circuit
Technical field
The utility model relates to a kind of engineering machinery weldering rail equipment.
Background technique
The protruding mechanism that pushes away of portable flash welder is used for removing the overlap on the rail automatically at postwelding, and it comprises that two push away protruding oil cylinder, subrack and push away protruding oil circuit.Push away in the protruding oil circuit and use diverter valve, make to get into two hydraulic oil volumes that push away protruding oil cylinder and equate, thereby guarantee that two push away the speed of the stretching out unanimity (being that oil cylinder is synchronous) of protruding oil cylinder, push away protruding power and reach 475kN and can turn down overlap smoothly.Push away convex process by diverter valve control, synchronization accuracy is lower, and in the uneven and unloaded stage at resistance, synchronous effect is poor; Receive abominable outwork environmetal impact, two push away protruding oil cylinder movement warp strengthen gradually.Deviation surpassed 10% of total kilometres after some weldering rail equipment used a period of time, pushed away convex process damage rail mother metal, influenced quality of weld joint.
Summary of the invention
The purpose of the utility model is to provide a kind of can making to push away in the convex process that to get into two hydraulic oil volumes that push away protruding oil cylinder suitable, and two consistent flash welders of movement velocity that push away protruding oil cylinder push away protruding synchronous oil circuit.
In order to achieve the above object; The technological scheme of the utility model is; A kind of flash welder pushes away protruding synchronous oil circuit; Comprise that first pushes away protruding oil cylinder, second and push away protruding oil cylinder and three position four-way directional control valve, said first pushes away protruding oil cylinder, second pushes away protruding oil cylinder and all has first chamber and second chamber, and said three position four-way directional control valve has first hydraulic fluid port, second hydraulic fluid port, the 3rd hydraulic fluid port and the 4th hydraulic fluid port; First hydraulic fluid port of three position four-way directional control valve connects the oil-feed oil circuit; The 3rd hydraulic fluid port connects oil return circuit, also comprises syncmotor, and first import of said syncmotor one end and second import all are communicated with second hydraulic fluid port of three position four-way directional control valve; First outlet and second of the syncmotor the other end exports respectively with corresponding first and pushes away first chamber that protruding oil cylinder and second pushes away protruding oil cylinder and be communicated with, and first pushes away second chamber that protruding oil cylinder and second pushes away protruding oil cylinder all is communicated with the 4th hydraulic fluid port of three position four-way directional control valve.
For the accumulation of guarding against deviations, also comprise the first unidirectional relief valve and the second unidirectional relief valve, first outlet and first that an end of the said first unidirectional relief valve is connected syncmotor pushes away between first chamber of protruding oil cylinder, and the other end connects the oil return circuit of return opening; Second outlet and second that one end of the said second unidirectional relief valve is connected syncmotor pushes away between first chamber of protruding oil cylinder, and the other end connects the oil return circuit of return opening.
The motor that said syncmotor is equated by two discharge capacities is connected in parallel and forms.
After adopting technique scheme, owing to adopted the accurate shunting means of syncmotor, therefore; Can guarantee to push away in the convex process that to get into two hydraulic oil volumes that push away protruding oil cylinder suitable; Two movement velocitys that push away protruding oil cylinder are consistent, and synchronization accuracy is high, thereby improve quality of weld joint.In addition, the utility model also has the following advantages: the syncmotor volume is little, and is in light weight, easy for installation; Synchronism does not receive the factor affecting such as load, flow and pressure of system; Requiring synchronous two to push away and need not to use various sensors to detect, relatively and follow the tracks of on the protruding oil cylinder, its cost and complexity are far below the high servo or ratio control system of employing price.
Description of drawings
The embodiment who provides below in conjunction with accompanying drawing does explanation in further detail to the utility model.
Fig. 1 is the structural representation that a kind of flash welder of the utility model pushes away protruding synchronous first embodiment of oil circuit;
Fig. 2 is the structural representation that a kind of flash welder of the utility model pushes away second embodiment of protruding synchronous oil circuit.
Embodiment
As shown in Figure 1; First embodiment of the utility model; A kind of flash welder pushes away protruding synchronous oil circuit; Comprise that first pushes away protruding oil cylinder 1, second and push away protruding oil cylinder 2 and three position four-way directional control valve 4, said first pushes away protruding oil cylinder 1, second pushes away protruding oil cylinder 2 and all has the first chamber 1-1,2-1 and the second chamber 1-2,2-2, and said three position four-way directional control valve 4 has the first hydraulic fluid port P, the second hydraulic fluid port A, the 3rd hydraulic fluid port T and the 4th hydraulic fluid port B; The first hydraulic fluid port P of three position four-way directional control valve 4 connects the oil-feed oil circuit; The 3rd hydraulic fluid port T connects oil return circuit, also comprises syncmotor 3, and the first import 3-1 of said syncmotor 3 one ends and the second import 3-2 all are communicated with the second hydraulic fluid port A of three position four-way directional control valve 4; The first outlet 3-3 of syncmotor 3 the other ends and the second outlet 3-4 push away the first chamber 1-1, the 2-1 that protruding oil cylinder 1 and second pushes away protruding oil cylinder 2 and are communicated with corresponding first respectively, and first pushes away the second chamber 1-2, the 2-2 that protruding oil cylinder 1 and second pushes away protruding oil cylinder 2 all is communicated with the 4th hydraulic fluid port B of three position four-way directional control valve 4.
As shown in Figure 1, said syncmotor 3 can adopt the hydraulic synchronous motor of purchasing on the market, also can be connected in parallel by the motor that two discharge capacities equate and form.
As shown in Figure 2; Second embodiment of the utility model; A kind of flash welder pushes away protruding synchronous oil circuit; Comprise that first pushes away protruding oil cylinder 1, second and push away protruding oil cylinder 2 and three position four-way directional control valve 4; Said first pushes away protruding oil cylinder 1, second pushes away protruding oil cylinder 2 and all has the first chamber 1-1,2-1 and the second chamber 1-2,2-2, and said three position four-way directional control valve 4 has the first hydraulic fluid port P, the second hydraulic fluid port A, the 3rd hydraulic fluid port T and the 4th hydraulic fluid port B, and the first hydraulic fluid port P of three position four-way directional control valve 4 connects the oil-feed oil circuit; The 3rd hydraulic fluid port T connects oil return circuit; Also comprise syncmotor 3, the first import 3-1 of said syncmotor 3 one ends and the second import 3-2 all are communicated with the second hydraulic fluid port A of three position four-way directional control valve 4, and the first outlet 3-3 of syncmotor 3 the other ends and the second outlet 3-4 push away the first chamber 1-1, the 2-1 that protruding oil cylinder 1 and second pushes away protruding oil cylinder 2 and are communicated with corresponding first respectively; First pushes away the second chamber 1-2, the 2-2 that protruding oil cylinder 1 and second pushes away protruding oil cylinder 2 all is communicated with the 4th hydraulic fluid port B of three position four-way directional control valve 4; Also comprise the first unidirectional relief valve 5 and the second unidirectional relief valve 6, the first outlet 3-3 and first that an end of the said first unidirectional relief valve 5 is connected syncmotor 3 pushes away between the first chamber 1-1 of protruding oil cylinder 1, and the other end connects the oil return circuit of return opening L; The second outlet 3-4 and second that one end of the said second unidirectional relief valve 6 is connected syncmotor 3 pushes away between the first chamber 2-1 of protruding oil cylinder 2, and the other end connects the oil return circuit of return opening L.
To push away protruding oil cylinder 1,2 variant at aspects such as cylinder diameter, stroke, internal leakages because of two; Small deviation also appearred in the extrusion of two oil cylinders unavoidably when oil inlet quantity was suitable; After adopting the first unidirectional relief valve 5 and the second unidirectional relief valve 6, can eliminate deviation, stop the accumulation of deviation; The effect that has safety protective valve simultaneously pushes away the durability of protruding mechanism thereby strengthen.
As shown in Figure 2, second embodiment is example with the utility model, and the action principle of the utility model is following: the time spent is done in three position four-way directional control valve 4 right positions; Begin to push away convex process; The first hydraulic fluid port P connects the second hydraulic fluid port A, and pressure oil gets into syncmotor 3, the first unidirectional relief valves 5 and the second unidirectional relief valve 6 as safety protective valve; Under working pressure, the first unidirectional relief valve 5 and the second unidirectional relief valve 6 are closed.Syncmotor 3 is equal to the equal motor of two discharge capacities and is connected in parallel; Rotating speed equates at any time; Equate from the flow through hydraulic oil volume of pipeline A1, A2 of syncmotor 3; Flow to first push away protruding oil cylinder 1 the first chamber 1-1 and the second hydraulic oil volume that pushes away the first chamber 2-1 of protruding oil cylinder 2 also equate because first push away protruding oil cylinder 1 and second to push away the cylinder diameter of protruding oil cylinder 2 identical, push away when protruding two and push away protruding oil cylinder 1,2 and stretch out synchronously.The time spent is done in position, three position four-way directional control valve 4 left side, and the first hydraulic fluid port P connects the 4th hydraulic fluid port B, and two push away protruding oil cylinder 1,2 and under unloaded state, bounce back.First push away protruding oil cylinder 1 the first chamber 1-1 and second push away and return fuel tank after hydraulic oil among the first chamber 2-1 of protruding oil cylinder 2 gets into syncmotor 3, realized that two push away protruding oil cylinder 1,2 and bounce back synchronously.Since get into first push away protruding oil cylinder 1 the second chamber 1-2 and second to push away the hydraulic oil volume of the second chamber 2-2 of protruding oil cylinder 2 unrestricted; First pushes away protruding oil cylinder 1, second pushes away protruding oil cylinder 2 and all can retract at the end; Return to this and push away the state of protruding circulation before beginning, can eliminate and avoid the deviation accumulation on the oil cylinder stroke.

Claims (3)

1. a flash welder pushes away protruding synchronous oil circuit; Comprise that first pushes away protruding oil cylinder (1), second and push away protruding oil cylinder (2) and three position four-way directional control valve (4); Said first pushes away protruding oil cylinder (1), second pushes away protruding oil cylinder (2) and all has first chamber (1-1,2-1) and second chamber (1-2,2-2); Said three position four-way directional control valve (4) has first hydraulic fluid port (P), second hydraulic fluid port (A), the 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 the oil-feed oil circuit, and the 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, said syncmotor (3) one ends and second import (3-2) all are communicated with second hydraulic fluid port (A) of three position four-way directional control valve (4); First outlet (3-3) and second of syncmotor (3) the other end exports (3-4) and pushes away first chamber (1-1,2-1) that protruding oil cylinder (1) and second pushes away protruding oil cylinder (2) and be communicated with corresponding first respectively, and first pushes away second chamber (1-2,2-2) that protruding oil cylinder (1) and second pushes away protruding oil cylinder (2) all is communicated with the 4th hydraulic fluid port (B) of three position four-way directional control valve (4).
2. flash welder according to claim 1 pushes away protruding synchronous oil circuit; It is characterized in that: also comprise the first unidirectional relief valve (5) and the second unidirectional relief valve (6); First outlet (3-3) and first that one end of the said first unidirectional relief valve (5) is connected syncmotor (3) pushes away between first chamber (1-1) of protruding oil cylinder (1), and the other end connects the oil return circuit of return opening (L); Second outlet (3-4) and second that one end of the said second unidirectional relief valve (6) is connected syncmotor (3) pushes away between first chamber (2-1) of protruding oil cylinder (2), and the other end connects the oil return circuit of return opening (L).
3. flash welder according to claim 1 pushes away protruding synchronous oil circuit, it is characterized in that: the motor that said syncmotor (3) is equated by two discharge capacities is connected in parallel and forms.
CN 201220129284 2012-03-31 2012-03-31 Synchronous shearing oil circuit of flash welding machine CN202579382U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606553A (en) * 2012-03-31 2012-07-25 常州市瑞泰工程机械有限公司 Shearing synchronous oil circuit for flash welding machine
CN104405705A (en) * 2014-09-18 2015-03-11 芜湖高昌液压机电技术有限公司 Automatic correction hydraulic motor synchronizing circuit of two-column gantry lifting machine
CN104930001A (en) * 2015-06-12 2015-09-23 叶丹 Energy-saving hydraulic system and engineering machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606553A (en) * 2012-03-31 2012-07-25 常州市瑞泰工程机械有限公司 Shearing synchronous oil circuit for flash welding machine
CN102606553B (en) * 2012-03-31 2015-02-11 常州市瑞泰工程机械有限公司 Shearing synchronous oil circuit for flash welding machine
CN104405705A (en) * 2014-09-18 2015-03-11 芜湖高昌液压机电技术有限公司 Automatic correction hydraulic motor synchronizing circuit of two-column gantry lifting machine
CN104930001A (en) * 2015-06-12 2015-09-23 叶丹 Energy-saving hydraulic system and engineering machine

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C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20121205

Effective date of abandoning: 20150211

RGAV Abandon patent right to avoid regrant