CN212536287U - Integrated valve set of contact net operation vehicle - Google Patents
Integrated valve set of contact net operation vehicle Download PDFInfo
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- CN212536287U CN212536287U CN202020746777.3U CN202020746777U CN212536287U CN 212536287 U CN212536287 U CN 212536287U CN 202020746777 U CN202020746777 U CN 202020746777U CN 212536287 U CN212536287 U CN 212536287U
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Abstract
The integrated valve set comprises two electromagnetic directional valves, an oil return path of the former electromagnetic directional valve is communicated with an oil inlet path of the latter electromagnetic directional valve, and a loop safety valve is arranged on the oil inlet path of the latter electromagnetic directional valve. The two electromagnetic directional valves are provided with double one-way throttle valves on working oil paths, a balance valve is arranged on one working oil path of the previous electromagnetic directional valve, and a ball valve connected with the main oil return path is arranged behind the balance valve. The utility model provides a hydraulic circuit is succinct, and used component is conventional hydraulic component, and is with low costs, and the integrated valves is small, simple structure, and simple to operate can use widely on contact net operation car operation platform mechanism and similar mechanism.
Description
Technical Field
The utility model relates to the field of hydraulic technology, concretely relates to an integrated valves for controlling operation platform mechanism lift, gyration action are overhauld to contact net operation car.
Background
At present, a large amount of hydraulic equipment is used in the field of railway engineering machinery. The construction core component of the contact net operation vehicle is a contact net maintenance operation platform mechanism, which is called as follows for short: an operation platform. The operation platform has three actions of lifting, rotating and braking, and is realized by providing power through a hydraulic system. In order to ensure the safety of construction and the stability of action, the lifting and the rotating action of the operation platform are carried out independently, and when the rotating action of the operation platform is carried out, in order to ensure the safety of personnel above the operation platform and the stability of starting and stopping of the mechanism action, the rotating action is accurate in action position and reliable in braking. When the hydraulic system of the operation platform fails and can not act, the operation platform can be ensured to be rapidly and emergently restored to a safe driving state.
Disclosure of Invention
The utility model provides a problem provide a can realize that contact net operation car overhauls operation platform mechanism action can the safe and stable and emergent reliable hydraulic pressure integrated valves.
The technical scheme of the utility model is that: the oil return path of the first electromagnetic reversing valve is communicated with the oil inlet path of the second electromagnetic reversing valve, and the safety valve is arranged on the oil inlet path of the second electromagnetic reversing valve; the two working oil ways of the first electromagnetic directional valve are the oil way with the oil port A1 and the oil way with the oil port B1, and the two working oil ways of the second electromagnetic directional valve are the oil way with the oil port A2 and the oil way with the oil port B2; two working oil paths of the first electromagnetic directional valve are provided with a first double one-way throttle valve, and two working oil paths of the second electromagnetic directional valve are provided with a second double one-way throttle valve; a balance valve is arranged on an oil circuit where an oil port B1 behind the double one-way throttle valve I is located; the hydraulic control system further comprises a ball valve used for discharging an oil path of an oil port B1, one end of the ball valve is connected to the oil path of the oil port B1 behind the balance valve, and the other end of the ball valve is connected with a main oil return path of the oil port T.
The first electromagnetic reversing valve and the second electromagnetic reversing valve are middle position M function three-position four-way electromagnetic reversing valves.
The two electromagnetic directional valves are provided with manual override operation handles or buttons.
The overflow end of the safety valve is communicated with a main oil return path where the T oil port is located, a branch oil path is led out from the oil inlet end of the safety valve, and a one-way throttle valve is arranged on the branch oil path.
The integrated oil circuit block is also provided with a one-way throttle valve which is arranged on an independent oil circuit and communicated with an oil inlet circuit of the safety valve. The double one-way throttle valve and the one-way throttle valve are not limited to oil return throttling or oil inlet throttling type valves, and are preferably combined according to the action characteristics of corresponding mechanisms.
The oil port A1 is connected with a rod cavity of the working platform lifting oil cylinder, the oil port B1 is connected with a rodless cavity of the working platform lifting oil cylinder, the oil ports A2 and B2 are respectively connected with a port A, B of the working platform rotary motor, and the oil port P2 is connected with a brake oil cylinder.
The integrated oil circuit block comprises an oil circuit block, two electromagnetic directional valves are arranged on the upper surface of the oil circuit block in parallel, and a double one-way throttle valve I and a double one-way throttle valve II are arranged between the two electromagnetic directional valves and the oil circuit block in a superposed manner; the front side of the oil circuit block is provided with a safety valve; the back of the oil path block is provided with a plug-in one-way throttle valve; and a right vertical surface of the oil path block is provided with a cartridge type balance valve and a ball valve.
The utility model discloses a hydraulic circuit's rational design lets the biggest system pressure in operation platform lift return circuit set pressure for main system, and operation platform rotary circuit and one-way throttle return circuit's the biggest system pressure set pressure for the circuit relief valve, realize the multistage pressure operation control function that the different actions of operation platform correspond different system pressure. And the action speed of the mechanism is adjusted as required by a loop throttling mode. Through the operation of the ball valve, the lifting loop can quickly discharge load, and the quick descending and returning of the operation platform are realized. The utility model discloses a through reasonable hydraulic circuit design, let contact net operation car work platform mechanism lift action steady. And the rotation action of the mechanism is cooperated with the rotation braking action through the self-characteristic of the hydraulic circuit, so that the accuracy of the rotation action of the mechanism and the stability of the starting and stopping positions are ensured. The hydraulic circuit is simple, all the used elements are conventional hydraulic elements, the cost is low, the size of the integrated valve group is small, the structure is simple, the installation is convenient, and the hydraulic circuit can be popularized and used on a contact net operation vehicle operation platform mechanism and similar mechanisms.
Drawings
FIG. 1 is a hydraulic schematic diagram of the present invention;
fig. 2 is a three-dimensional structure diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, which are provided for illustration only, and do not limit the scope of the present invention.
As shown in a hydraulic principle of fig. 1, the integrated valve group of the contact net operation vehicle comprises an integrated oil circuit block consisting of a first electromagnetic directional valve 4-1, a second electromagnetic directional valve 4-2, a first double one-way throttle valve 3-1, a second double one-way throttle valve 3-2, a balance valve 2, a ball valve 1, a one-way throttle valve 6 and a safety valve 5. The electromagnetic directional valve 4 is a three-position four-way electromagnetic directional valve with a manual override operation handle or button. When the electromagnetic operation reversing function of the electromagnetic reversing valve is invalid, the handle or the button can be operated by manual override to carry out override reversing operation. An oil return path of the first electromagnetic directional valve 4-1 is communicated with an oil inlet path of the second electromagnetic directional valve 4-2, a loop safety valve 5 is arranged on the oil path, and an overflow end of the safety valve 5 is communicated with a main oil return path. A branch oil path is led out from the oil inlet end of the safety valve 5, and a one-way throttle valve 6 is arranged on the branch oil path. The oil path of the working oil ports of the first electromagnetic directional valve 4-1 and the second electromagnetic directional valve 4-2, namely the oil ports A1, B1, A2 and B2, is provided with a first double one-way throttle valve 3-1 and a second double one-way throttle valve 3-2, the oil outlet end of the first double one-way throttle valve 3-1, namely the oil path of the oil port B1, is provided with a balance valve 2, and the rear part of the balance valve 2 is provided with a ball valve 1 connected with a main oil return path of the T port. And pressure measuring joints 8-1 and 8-2 are respectively arranged on oil paths where the oil ports P2 and B1 are located and are used for measuring pressure when the operation platform mechanism is adjusted.
In fig. 2, the first electromagnetic directional valve 4-1 and the second electromagnetic directional valve 4-2 are plate valves with manual override handles or buttons and are arranged on the upper surface of the oil circuit block 7 side by side. A double one-way throttle valve 3-1 and a one-way throttle valve 6 are arranged between the first electromagnetic directional valve 4-1 and the oil circuit block 7 in an overlapping mode; a double one-way throttle valve 3-2 is arranged between the second electromagnetic directional valve 4-2 and the oil circuit block 7 in an overlapping mode; the front side of the oil path block 7 is provided with a plug-in type safety valve 5; and a plug-in mounting balance valve 2 and a plate-type mounting ball valve 1 are mounted on the right vertical surface of the oil way block.
In practical application, as shown in fig. 1, the a1 oil port is connected to the rod chamber of the lift cylinder of the work platform, and the B1 port is connected to the rodless chamber of the lift cylinder. The oil ports A2 and B2 are respectively connected with a A, B port of the rotary motor of the working platform. The P2 oil port is connected to the brake oil cylinder of the platform rotary base. When the electromagnetic directional valve does not work, hydraulic oil enters the middle M functional oil return port of the electromagnetic directional valve II 4-2 through the middle M functional oil return port of the electromagnetic directional valve I4-1 and is directly discharged back to the hydraulic oil tank through the main oil return circuit where the T port is located. When the operation platform needs to be lifted, the electromagnet of the electromagnetic directional valve I4-1 is electrified for reversing, hydraulic oil enters the rodless cavity of the lifting oil cylinder through the double one-way throttle valve I3-1 and then through the one-way valve of the balance valve 2 to push the oil cylinder to extend out to enable the operation platform to be lifted, or hydraulic oil enters the rod cavity of the lifting oil cylinder through the double one-way throttle valve I3-1, and the balance valve 2 in the rodless cavity oil way is opened under the action of pilot pressure to push the oil cylinder to retract. When the first electromagnetic directional valve 4-1 cannot change direction or the operation platform cannot descend due to other system faults, the ball valve 1 is opened, oil liquid in the rodless cavity of the lifting oil cylinder is directly unloaded to the hydraulic oil tank through the main oil return circuit where the T port is located, and the operation platform descends and returns to the original position. When the operation platform needs to rotate, the hydraulic oil is electrified and reversed through the second electromagnetic reversing valve 4-2, and pressure is built up in the hydraulic oil due to the safety valve 5. The hydraulic oil flows in two ways: one path enters a brake belt oil cylinder through a one-way throttle valve 6 and a P2 oil port, and the rotary brake of the operation platform is released; the other path of the air flow enters the rotary motor through a double one-way throttle valve II 3-2 through an oil port A2 or B2 to drive the motor to rotate. When the second electromagnetic directional valve 4-2 returns to the middle position, the hydraulic oil is discharged back to the hydraulic oil tank through the M machine in the middle position of the second electromagnetic directional valve 4-2, the brake oil cylinder releases the pressure, and the rotary brake belt of the operation platform is tightly held under the action of a reverse thrust spring of the brake oil cylinder, so that the stable stopping position of the operation platform is ensured.
The above description with reference to the drawings is only for the description of one embodiment of the present invention, and the technical solution of the present invention is not limited thereto, and all modifications of the shape and the equivalent changes made according to the spirit of the present invention should fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides an integrated valves of contact net operation car which characterized in that: the oil return device comprises an integrated oil path block, wherein two electromagnetic reversing valves, a double one-way throttle valve I (3-1), a double one-way throttle valve II (3-2), a balance valve (2) and a safety valve (5) are arranged on the integrated oil path block, the two electromagnetic reversing valves are an electromagnetic reversing valve I (4-1) and an electromagnetic reversing valve II (4-2), the electromagnetic reversing valve I (4-1) and the electromagnetic reversing valve II (4-2) are three-position four-way electromagnetic reversing valves, an oil return path of the electromagnetic reversing valve I (4-1) is communicated with an oil inlet path of the electromagnetic reversing valve II (4-2), and the safety valve (5) is arranged on the oil inlet path of the electromagnetic reversing valve II (4-2); the two working oil ways of the first electromagnetic directional valve (4-1) are the oil way with the oil port A1 and the oil way with the oil port B1, and the two working oil ways of the second electromagnetic directional valve (4-2) are the oil way with the oil port A2 and the oil way with the oil port B2; a double one-way throttle valve I (3-1) is arranged on two working oil paths of the electromagnetic directional valve I (4-1), and a double one-way throttle valve II (3-2) is arranged on two working oil paths of the electromagnetic directional valve II (4-2); a balance valve (2) is arranged on an oil path where an oil port B1 behind the double one-way throttle valve I (3-1) is located; the hydraulic balance valve further comprises a ball valve (1) used for releasing an oil path where a B1 oil port is located, one end of the ball valve (1) is connected to the oil path where the B1 oil port behind the balance valve (2) is located, and the other end of the ball valve (1) is connected with a main oil return path where the T oil port is located.
2. The integrated valve group of contact net operation vehicle of claim 1, characterized in that: the first electromagnetic directional valve (4-1) and the second electromagnetic directional valve (4-2) are middle M-position three-position four-way electromagnetic directional valves.
3. The integrated valve group of contact net operation vehicle of claim 1, characterized in that: the two electromagnetic directional valves are provided with manual override operation handles or buttons.
4. The integrated valve group of contact net operation vehicle of claim 1, characterized in that: the overflow end of the safety valve (5) is communicated with a main oil return path where the T oil port is located, a branch oil path is led out from the oil inlet end of the safety valve (5) independently, and a one-way throttle valve (6) is arranged on the branch oil path.
5. The integrated valve group of contact net operation vehicle of claim 1, characterized in that: the integrated oil circuit block is also provided with a one-way throttle valve (6), and the one-way throttle valve (6) is arranged on a separate oil circuit and communicated with an oil inlet circuit of the safety valve (5).
6. The integrated valve group of contact net operation vehicle of claim 1, characterized in that: the oil port A1 is connected with a rod cavity of the working platform lifting oil cylinder, the oil port B1 is connected with a rodless cavity of the working platform lifting oil cylinder, the oil ports A2 and B2 are respectively connected with a port A, B of the working platform rotary motor, and the oil port P2 is connected with a brake oil cylinder.
7. The integrated valve group of contact net operation vehicle of claim 1, characterized in that: the integrated oil circuit block comprises an oil circuit block (7), two electromagnetic directional valves are arranged on the upper surface of the oil circuit block (7) side by side, and a double one-way throttle valve I (3-1) and a double one-way throttle valve II (3-2) are arranged between the two electromagnetic directional valves and the oil circuit block (7) in an overlapped mode; the front surface of the oil circuit block (7) is provided with a safety valve (5); the back of the oil path block (7) is provided with a plug-in one-way throttle valve (6); the right side vertical surface of the oil path block (7) is provided with a cartridge mounting type balance valve (2) and a ball valve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020746777.3U CN212536287U (en) | 2020-05-09 | 2020-05-09 | Integrated valve set of contact net operation vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020746777.3U CN212536287U (en) | 2020-05-09 | 2020-05-09 | Integrated valve set of contact net operation vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212536287U true CN212536287U (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020746777.3U Active CN212536287U (en) | 2020-05-09 | 2020-05-09 | Integrated valve set of contact net operation vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212536287U (en) |
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2020
- 2020-05-09 CN CN202020746777.3U patent/CN212536287U/en active Active
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