CN116061989A - Electrohydraulic switch machine for railway turnout - Google Patents
Electrohydraulic switch machine for railway turnout Download PDFInfo
- Publication number
- CN116061989A CN116061989A CN202310282059.3A CN202310282059A CN116061989A CN 116061989 A CN116061989 A CN 116061989A CN 202310282059 A CN202310282059 A CN 202310282059A CN 116061989 A CN116061989 A CN 116061989A
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- oil
- locking
- rod
- cylinder
- action
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- 230000009471 action Effects 0.000 claims abstract description 54
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 21
- 238000001125 extrusion Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 14
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/04—Fluid-pressure devices for operating points or scotch-blocks
- B61L5/045—Fluid-pressure devices for operating points or scotch-blocks using electrically controlled fluid-pressure operated driving means
Abstract
The invention discloses an electrohydraulic switch machine for railway turnout, which solves the technical problems of asynchronous conversion, large equipment structure and easy oil leakage existing in the prior art, and belongs to the technical field of railway traffic equipment, and the concrete technical scheme is as follows: the automatic switch control device comprises a shell, wherein an independent oil supply pump and a motor are arranged in the shell, the oil supply pump is connected with an output shaft of the motor through a coupler, the oil supply pump provides power for an action oil cylinder, a first locking oil cylinder and a second locking oil cylinder, a cylinder barrel of the action oil cylinder is connected with a squeezing body through an action plate, the action oil cylinder barrel, the squeezing body and an action rod synchronously move, when a switch machine is switched in place, the first locking oil cylinder and the second locking oil cylinder start to move to a certain position and then drive the locking rod and a contact driving rod to move, so that a contact is switched, the action oil cylinder and the locking oil cylinder of the switch machine are independently designed, independent switching and locking functions are respectively realized, and synchronous switch switching operation under multi-machine traction can be ensured.
Description
Technical Field
The invention belongs to the technical field of railway traffic equipment, and particularly relates to an electrohydraulic switch machine.
Background
In the technical field of railway switches, the switches are classified into electric switches, electrohydraulic switches and electric air switches according to standards. The electric air switch belongs to a quick-action switch and is mostly applied to a hump yard; the electric switch machine and the electrohydraulic switch machine are applied to common-speed and high-speed turnouts; the electrohydraulic switch machine is applied to high-speed turnout in large area. The existing electrohydraulic switch machine has application cases in the market for many years, but at present, some problems still exist, such as on a multi-machine traction switch, the problem of how to realize synchronous switch switching of the switch is always plagued by the fact that a hydraulic station is arranged to drive a switching locking device to realize switch switching of the switch in a multi-machine traction mode; the related parts of the oil circuit in the hydraulic station are scattered, the connecting links are more, and oil leakage phenomenon occurs sometimes. For the replacement of left and right on site switch machines, the switch machines are required to be translated to opposite sides at present, and then the whole detection rod and the whole action rod cover cylinder are reversed, so that the operation is complicated.
Disclosure of Invention
The invention provides an electrohydraulic switch machine, which aims to solve the technical problems of asynchronous conversion, large equipment structure and easy oil leakage in the prior art, is integrally of a modularized structure design, adopts independent power driving and is convenient for field installation.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: an electrohydraulic switch machine for railway turnout comprises a casing, wherein a power module, a conversion locking module and a detection module are arranged in the casing, and the whole is in modularized design.
The power module comprises an oil supply pump and a motor, wherein the oil supply pump is connected with an output shaft of the motor through a coupler, the motor provides sufficient power for the oil supply pump, and each electrohydraulic switch machine is provided with an independent oil supply pump and an independent motor.
The switching locking module comprises an action oil cylinder, a first locking oil cylinder, a second locking oil cylinder and an action rod, wherein a first oil port of the oil supply pump is communicated with a first cavity of the action oil cylinder through an end face sealing joint, a second oil port of the oil supply pump is communicated with a second cavity of the action oil cylinder through an end face sealing joint, a cylinder rod of the action oil cylinder extends to the outside of the shell, and reciprocating motion of the action oil cylinder can be realized under the driving of the oil supply pump; in addition, the end face seal is adopted, so that the tightness can be improved, the oil leakage phenomenon can be effectively avoided, and the requirement on the machining and manufacturing precision of parts is low.
The first oil port of the oil supply pump is communicated with a rodless cavity of a first locking oil cylinder through an end face sealing joint, and a cylinder rod of the first locking oil cylinder is connected with a locking rod in a locking frame; the second oil port of the oil feed pump is communicated with the rodless cavity of the second locking oil cylinder through an end face sealing joint, the cylinder rod of the second locking oil cylinder is connected with the locking rod in the locking frame, the locking rod is connected with the first contact driving rod and the second contact driving rod, and the reciprocating motion of the locking rod realizes the locking function of different positions.
The cylinder barrel of the action cylinder is connected with the extrusion body and the action rod, and the cylinder barrel, the extrusion body and the action rod synchronously move.
The detection module comprises a first contact seat and a second contact seat, wherein the first contact seat and the second contact seat are arranged on two sides of the action plate, the first contact driving rod is matched with the first contact seat, and the second contact driving rod is matched with the second contact seat; the cylinder rod of the first locking cylinder and the cylinder rod of the second locking cylinder synchronously move, and the movement direction is always consistent, namely, the cylinder rod of the first locking cylinder and the cylinder rod of the second locking cylinder move leftwards or rightwards simultaneously. The locking rod moves rightwards, the first contact driving rod is contacted with the first contact seat, and the conversion of the right contact is realized; the locking rod moves leftwards, the second contact driving rod is contacted with the second contact seat, the conversion of the left contact is realized, and the locking of different positions is realized through the first contact seat and the second contact seat.
When the switch machine is arranged at the left side of the railway turnout, the detection rod is arranged at the right side of the action rod; when the switch machine is arranged on the right side of the railway turnout, the detection rod is arranged on the left side of the action rod, so that the switch machine can be conveniently and quickly switched between the left and right mounting of the switch machine on site, and the switch machine is only required to be switched by 180 degrees, and the detection rod is switched to the other side.
The casing is internally provided with a first displacement contactor and a second displacement contactor, the first displacement contactor is arranged at the front end of the extrusion body in the running direction, the first displacement contactor is used for limiting the extrusion body to run to the limit position of the front end, the second displacement contactor is arranged at the rear end of the extrusion body in the running direction, and the second displacement contactor is used for limiting the extrusion body to run to the limit position of the rear end.
The first oil port of the oil feed pump is communicated with one end of a first one-way valve, the other end of the first one-way valve is communicated with the inside of the oil feed pump, and the first one-way valve is embedded in the outer wall of the oil feed pump.
The first oil port of the oil feed pump is communicated with the oil return tank through a first overflow valve, and threads of the first overflow valve are embedded in the outer wall of the oil return tank.
The second oil port of the oil feed pump is communicated with one end of a second one-way valve, the other end of the second one-way valve is communicated with the inside of the oil feed pump, and the second one-way valve is embedded on the outer wall of the oil feed pump in a threaded manner.
The second oil port of the oil feed pump is communicated with the oil return tank through a second overflow valve, and the second overflow valve is embedded on the outer wall of the oil return tank through threads.
The oil supply pump, the first check valve, the second check valve, the first overflow valve, the second overflow valve and the oil return tank are integrated into an oil pump assembly, and the whole oil pump assembly is of modularized design, and is convenient to install and maintain.
Compared with the prior art, the invention has the following specific beneficial effects:
1. the invention relates to an independently driven electrohydraulic switch machine, which is provided with independent power modules, and each switch machine independently operates, so that the synchronous operation of switch conversion under multi-machine traction can be ensured.
2. The power module and the conversion locking module of the invention relate to the oil way which is conducted by the surface contact, the sealing structure of the surface contact can effectively avoid the oil leakage phenomenon, and the manufacturing precision requirement on the part processing is lower.
3. The detection rod can be arranged on the left side or the right side of the action rod according to the requirement, so that the left and right switch of the switch machine is convenient and fast to switch on site, the switch machine is only required to be switched by 180 degrees, and the detection rod is switched to the other side of the action rod, so that the installation time is greatly saved.
4. The invention has the advantages that each module can be independently tested, the modularization of the whole machine is convenient to assemble and disassemble, the whole structure is simple and compact, the volume is small, the function is clear, if faults occur, the module position can be accurately positioned according to the fault reasons, and the invention plays a guiding role in the follow-up fault analysis.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure, 1 is a casing, 2 is an oil feed pump, 3 is a motor, 4 is a coupler, 5 is an action cylinder, 6 is a first locking cylinder, 7 is a second locking cylinder, 8 is an action rod, 9 is an extrusion body, 10 is a locking frame, 11 is a detection rod, 12 is a first displacement contactor, 13 is a second displacement contactor, 14 is a first one-way valve, 15 is a second one-way valve, 16 is a first overflow valve, 17 is a second overflow valve, 18 is a first contact seat, 19 is a second contact seat, 20 is a first contact driving rod, and 21 is a second contact driving rod.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the electrohydraulic switch machine for the railway turnout comprises a machine shell 1, wherein a power module, a conversion locking module and a detection module are arranged in the machine shell 1, and the whole is in a modularized design.
The power module comprises an oil feed pump 2 and an electric motor 3, the electric motor 3 transmits power to the oil feed pump 2 through a coupling 4, the electric motor 3 provides sufficient power for the oil feed pump 2, and each electro-hydraulic switch machine is provided with the independent oil feed pump 2 and the electric motor 3.
The conversion locking module comprises an action oil cylinder 5, a first locking oil cylinder 6, a second locking oil cylinder 7 and an action rod 8, wherein a first oil port of the oil supply pump 2 is communicated with a first cavity of the action oil cylinder 5 through an end face sealing joint, a second oil port of the oil supply pump 2 is communicated with a second cavity of the action oil cylinder 5 through an end face sealing joint, a cylinder rod of the action oil cylinder 5 extends to the outside of the shell 1, and reciprocating motion of the action oil cylinder 5 can be realized under the driving of the oil supply pump 2; in addition, the end face seal is adopted, so that the tightness can be improved, the oil leakage phenomenon can be effectively avoided, and the requirement on the machining and manufacturing precision of parts is low.
The first oil port of the oil feed pump 2 is communicated with a rodless cavity of the first locking oil cylinder 6 through an end face sealing joint, and a cylinder rod of the first locking oil cylinder 6 is connected with a locking rod in the locking frame 10; the second oil port of the oil feed pump 2 is communicated with the rodless cavity of the second locking oil cylinder 7 through an end face sealing joint, the cylinder rod of the second locking oil cylinder 7 is connected with a locking rod in the locking frame 10, the locking rod is connected with the first contact driving rod 20 and the second contact driving rod 21, and the reciprocating motion of the locking rod realizes the locking functions of different positions.
One end of the locking rod is propped against the end face of the cylinder rod piston of the first locking oil cylinder 6, and the other end of the locking rod is propped against the end face of the cylinder rod piston of the second locking oil cylinder 7.
The cylinder barrel of the action cylinder 5 is connected with the extrusion body 9 and the action rod 8, and the cylinder barrel, the extrusion body 9 and the action rod 8 synchronously move.
The detection module comprises a first contact seat 18 and a second contact seat 19, wherein the first contact seat 18 and the second contact seat 19 are arranged on two sides of the action plate, a first contact driving rod 20 is matched with the first contact seat 18, and a second contact driving rod 21 is matched with the second contact seat 19; the cylinder rod of the first locking cylinder 6 and the cylinder rod of the second locking cylinder 7 move synchronously, and the movement direction is always consistent, namely, the cylinder rod and the cylinder rod of the second locking cylinder 7 move leftwards or rightwards simultaneously. The locking rod moves rightwards, the first contact driving rod 20 contacts with the first contact seat 18, and the conversion of the right contact is realized; the locking rod moves leftwards, the second contact driving rod 21 contacts with the second contact seat 19, the conversion of the left contact is realized, and the locking of different positions is realized through the first contact seat 18 and the second contact seat 19.
The action cylinder 5 and the locking cylinder of the switch machine are designed independently, so that independent conversion and locking functions are realized respectively, and the overall dimension of the switch machine is greatly reduced.
When the switch machine is installed on the left side of the railway switch, the detection rod 11 is installed on the right side of the action rod 8; when the switch machine is installed on the right side of a railway turnout, the detection rod 11 is installed on the left side of the action rod 8, so that the switch machine can be conveniently and quickly switched to the left and right of the switch machine on site, and the switch machine is only required to be switched by 180 degrees, and the detection rod 11 is switched to the other side.
The casing 1 is internally provided with a first displacement contactor 12 and a second displacement contactor 13, the first displacement contactor 12 is arranged at the front end of the extrusion body 9 in the running direction, the first displacement contactor 12 is used for limiting the extrusion body 9 to run to the limit position of the front end, the second displacement contactor 13 is arranged at the rear end of the extrusion body 9 in the running direction, and the second displacement contactor 13 is used for limiting the extrusion body 9 to run to the limit position of the rear end.
The first oil port of the oil feed pump 2 is communicated with one end of a first one-way valve 14, the other end of the first one-way valve 14 is communicated with the inside of the oil feed pump 2, and the first one-way valve 14 is embedded on the outer wall of the oil feed pump 2 in a threaded manner.
The first oil port of the oil feed pump 2 is communicated with the oil return tank through a first overflow valve 16, and the first overflow valve 16 is embedded on the outer wall of the oil return tank in a threaded manner.
The second oil port of the oil feed pump 2 is communicated with one end of a second one-way valve 15, the other end of the second one-way valve 15 is communicated with the inside of the oil feed pump 2, and the second one-way valve 15 is embedded on the outer wall of the oil feed pump 2 in a threaded manner.
The second oil port of the oil feed pump 2 is communicated with the oil return tank through a second overflow valve 17, and the second overflow valve 17 is embedded on the outer wall of the oil return tank in a threaded manner.
The oil feed pump 2, the first check valve 14, the second check valve 15, the first overflow valve 16, the second overflow valve 17 and the oil return tank are integrated into an oil pump assembly, and the whole oil pump assembly is of modularized design, so that the installation and the maintenance are convenient.
When the first oil port of the oil feed pump 2 is used for feeding oil, the oil pressure of the oil feed side is high, the first one-way valve 14 is in a closed state under the action of high-pressure oil, the oil pressure of the oil return side is low, the second one-way valve 15 is in an open state, and the oil directly flows back into the oil feed pump 2 through the second one-way valve 15; when the second oil port of the oil feed pump 2 is fed with oil, the oil pressure of the oil feed side is high, the second check valve 15 is in a closed state under the action of high-pressure oil, the oil pressure of the oil return side is low, the first check valve 14 is in an open state, and the oil directly flows back into the oil feed pump 2 through the first check valve 14.
When the first oil port of the oil supply pump 2 supplies oil, when the oil pressure in the system exceeds a preset critical value, the first overflow valve 16 is opened, and the first overflow valve 16 is timely depressurized; when the second oil port of the oil supply pump 2 supplies oil, when the oil pressure in the system exceeds a preset critical value, the second overflow valve 17 is opened, and the second overflow valve 17 is timely depressurized, so that the operation safety of the whole hydraulic system is ensured.
The oil way interface seals are all face seals, so that oil leakage is avoided.
The switch machine has three functions of conversion, locking and representation, an action rod 8 of the switch machine is connected with an external turnout, the reciprocating linear motion of the action rod 8 drives the conversion of the turnout, a detection rod 11 is connected with the external turnout, and the detection rod is used as a driving piece of the turnout to be matched with a node in the switch machine so as to realize the detection of the turnout position state.
Conversion function: the power module is driven by a motor 3 to drive an oil pump to circulate an oil way, the capacity of the switch machine for driving the switch to switch is realized by adjusting a first overflow valve 16 and a second overflow valve 17 on the oil pump, two ends of a cylinder rod of an action cylinder 5 are fixed, and a cylinder barrel of the action cylinder 5 drives an action rod 8 and a squeezing body 9 to move so as to realize the switch switching.
Locking function: after the turnout is switched into place, the action oil cylinder 5 stops moving, the locking oil cylinder starts moving, and the cylinder rod of the locking oil cylinder drives the locking roller group to lock the extruding body 9, so that the locking of the action rod 8 is realized.
The expression function: after the switch machine is locked in place, a contact driving rod arranged on a locking frame 10 is hard connected with a cylinder rod of a locking cylinder, and the movement of the cylinder rod of the locking cylinder drives the contact driving rod to trigger the switching of a contact, at the moment, a switch moves a detecting rod 11 to a terminal position, the contact is combined with a notch of the detecting rod 11, and the contact gives a representation signal.
The invention relates to an independently driven electrohydraulic switch machine, which is provided with independent power modules, and each switch machine independently operates, so that the synchronous operation of switch conversion under multi-machine traction can be ensured.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. The electrohydraulic switch machine for the railway turnout is characterized by comprising a machine shell (1), wherein a power module, a conversion locking module and a detection module are arranged in the machine shell (1);
the power module comprises an oil supply pump (2) and a motor (3), and the oil supply pump (2) is connected with an output shaft of the motor (3) through a coupler (4);
the switching locking module comprises an action oil cylinder (5), a first locking oil cylinder (6), a second locking oil cylinder (7) and an action rod (8), wherein a first oil port of the oil supply pump (2) is communicated with a first cavity of the action oil cylinder (5) through an end face sealing joint, a second oil port of the oil supply pump (2) is communicated with a second cavity of the action oil cylinder (5) through an end face sealing joint, and a cylinder rod of the action oil cylinder (5) extends to the outside of the shell (1);
the first oil port of the oil supply pump (2) is communicated with a rodless cavity of a first locking oil cylinder (6) through an end face sealing joint, and a cylinder rod of the first locking oil cylinder (6) is connected with a locking rod in a locking frame (10);
the second oil port of the oil supply pump (2) is communicated with a rodless cavity of a second locking oil cylinder (7) through an end face sealing joint, a cylinder rod of the second locking oil cylinder (7) is connected with a locking rod in a locking frame (10), and the locking rod is connected with a first contact driving rod (20) and a second contact driving rod (21);
the cylinder barrel of the action cylinder (5) is connected with the extrusion body (9) and the action rod (8);
the detection module comprises a first contact seat (18) and a second contact seat (19), wherein the first contact seat (18) and the second contact seat (19) are arranged on two sides of the action plate, the first contact driving rod (20) is matched with the first contact seat (18), and the second contact driving rod (21) is matched with the second contact seat (19);
the device also comprises a detection rod (11), wherein the detection rod (11) is arranged on the left side or the right side of the action rod (8).
2. The electrohydraulic switch machine for railway turnout according to claim 1, characterized in that a first shifting contactor (12) and a second shifting contactor (13) are arranged in the casing (1), the first shifting contactor (12) is arranged at the front end of the extrusion body (9) in the running direction, and the second shifting contactor (13) is arranged at the rear end of the extrusion body (9) in the running direction.
3. The electrohydraulic switch machine for railway turnout as claimed in claim 1, wherein a first oil port of said oil feed pump (2) is communicated with one end of a first check valve (14), the other end of the first check valve (14) is communicated with the inside of the oil feed pump (2), and said first check valve (14) is embedded on the oil feed pump (2);
the first oil port of the oil supply pump (2) is communicated with an oil return tank through a first overflow valve (16), and the first overflow valve (16) is embedded on the oil return tank;
the second oil port of the oil supply pump (2) is communicated with one end of a second one-way valve (15), the other end of the second one-way valve (15) is communicated with the inside of the oil supply pump (2), and the second one-way valve (15) is embedded on the oil supply pump (2);
the second oil port of the oil supply pump (2) is communicated with an oil return tank through a second overflow valve (17), and the second overflow valve (17) is embedded on the oil return tank;
the oil supply pump (2), the first one-way valve (14), the second one-way valve (15), the first overflow valve (16), the second overflow valve (17) and the oil return tank are integrated into an oil pump assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310282059.3A CN116061989A (en) | 2023-03-22 | 2023-03-22 | Electrohydraulic switch machine for railway turnout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310282059.3A CN116061989A (en) | 2023-03-22 | 2023-03-22 | Electrohydraulic switch machine for railway turnout |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116061989A true CN116061989A (en) | 2023-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310282059.3A Pending CN116061989A (en) | 2023-03-22 | 2023-03-22 | Electrohydraulic switch machine for railway turnout |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116061989A (en) |
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| CN218400545U (en) * | 2022-11-22 | 2023-01-31 | 逍游世界科技(成都)有限公司 | Synchronous oil circuit of electro-hydraulic switch machine and multipoint traction synchronous electro-hydraulic switch machine |
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Application publication date: 20230505 |
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