CN218882629U - Hydraulic control system of highway-railway dual-purpose tractor - Google Patents
Hydraulic control system of highway-railway dual-purpose tractor Download PDFInfo
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- CN218882629U CN218882629U CN202223172767.1U CN202223172767U CN218882629U CN 218882629 U CN218882629 U CN 218882629U CN 202223172767 U CN202223172767 U CN 202223172767U CN 218882629 U CN218882629 U CN 218882629U
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Abstract
The utility model relates to a hydraulic control system of a highway and railway dual-purpose tractor, belonging to the technical field of hydraulic control of highway and railway dual-purpose tractors; the technical problem to be solved is as follows: the improvement of the hardware structure of the real-time wireless electrocardiographic dynamic monitoring device is provided; the technical scheme for solving the technical problem is as follows: the input ends of the rear guide oil cylinder and the front guide oil cylinder are both connected with an energy accumulator, and the output end of the energy accumulator is provided with an energy accumulator switch; the control end of the rear guide oil cylinder is connected with the pressure regulating valve block and the second electromagnetic directional valve in sequence and then is connected with the oil tank module; the control end of the front steering oil cylinder is connected with the bidirectional hydraulic lock and the first electromagnetic reversing valve in sequence and then is connected with the oil tank module; the output end of the oil tank module is also externally connected with a hydraulic motor through a third electromagnetic reversing valve; pressure sensors are arranged on the bidirectional hydraulic lock and the pressure regulating valve block; the output of oil tank module has the check valve in-connection, and the input of check valve links to each other with first, second oil tank respectively, the utility model discloses be applied to the dual-purpose tractor of public railway.
Description
Technical Field
The utility model relates to a dual-purpose tractor hydraulic control system of public railway belongs to dual-purpose tractor hydraulic control technical field of public railway.
Background
In the field of a tractor for both highway and railway (hereinafter referred to as a "highway and railway vehicle") at present, in order to increase traction force, traction operation is generally performed in a rubber wheel driving manner, that is, front and rear guide steel wheels of the highway and railway vehicle provide guiding force on a rail to ensure that the highway and railway vehicle normally run on the rail, and friction force generated by contact between rear axle tires of the highway and the rail further provides traction force, as shown in fig. 1, in an operating state of the highway and railway vehicle on the rail.
The front and rear guide oil cylinders of the conventional hydraulic control system of the railway wagon are controlled by a bidirectional hydraulic lock and an energy accumulator, the guide oil cylinders are closed by the bidirectional hydraulic lock, and the pressure adjusting capacity is very limited only by the energy accumulator; and the back guide oil cylinder pressure of the railway bus is a certain value basically, when the railway bus is in traction operation, the stroke of the back guide oil cylinder is unchanged, so that the back guide pressure is continuously increased, the load of the tire is transferred to the back guide, the traction capacity of the tire is further reduced, potential safety hazards are generated when the speed is increased, and the tire is seriously abraded.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: provides an improvement of a hardware structure of a real-time wireless electrocardio dynamic monitoring device.
In order to solve the technical problem, the utility model discloses a technical scheme be: a hydraulic control system of a highway and railway dual-purpose tractor comprises a rear guide oil cylinder and a front guide oil cylinder, wherein the input ends of the rear guide oil cylinder and the front guide oil cylinder are both connected with an energy accumulator, and the output end of the energy accumulator is provided with an energy accumulator switch;
the control end of the rear guide oil cylinder is connected with the pressure regulating valve block and the second electromagnetic directional valve in sequence and then is connected with the oil tank module;
the control end of the front steering oil cylinder is connected with the bidirectional hydraulic lock and the first electromagnetic reversing valve in sequence and then is connected with the oil tank module;
the output end of the oil tank module is also externally connected with a hydraulic motor through a third electromagnetic reversing valve;
pressure sensors are arranged on the bidirectional hydraulic lock and the pressure regulating valve block;
the oil tank module comprises an oil tank module and is characterized in that a one-way valve is connected in the output end of the oil tank module, the input end of the one-way valve is connected with a first oil tank and a second oil tank respectively, an overflow valve is arranged at the output end of the first oil tank, and a filter and a hydraulic pump are arranged at the output end of the second oil tank.
An electromagnetic valve YA1 is further arranged on a first control loop of the pressure regulating valve block, and the electromagnetic valve YA1 is a one-way valve-one-way valve selection valve;
an electromagnetic valve YA2 is further arranged on a second control loop of the pressure regulating valve block, and the electromagnetic valve YA2 is specifically a one-way valve-passage selection valve;
a spill valve YA3 is also provided between the first control circuit and the second control circuit.
The energy accumulator is specifically a diaphragm type energy accumulator, and the model is HNXQ-A/C.
The models of the electromagnetic valve YA1 and the electromagnetic valve YA2 are LL12-217;
the type of the overflow valve YA3 is YF10-02.
The model of the first electromagnetic reversing valve and the second electromagnetic reversing valve is 4WE6Y6X.
The model of the bidirectional hydraulic lock is VRDLG3/8.
The model of the pressure sensor is RPS0450.
The type of the hydraulic pump is V15A1R-95.
The type of the hydraulic motor is BM4-800.
The utility model discloses for prior art possesses following beneficial effect:
1. the utility model improves the structure of the vehicle hydraulic control system, so that the pressure of the guide oil cylinder of the railway vehicle can be changed along with the speed of the vehicle in railway operation, the tire load is changed along with the speed of the vehicle, the abrasion of the tires of the railway vehicle is reduced, and the service life of the tires is prolonged;
2. by arranging the pressure regulating valve block, the pressure of the guide oil cylinder is kept constant in the traction operation of the railway wagon, the axle weight of a tire cannot be transferred to the guide wheel, and the railway wagon can further exert the maximum traction capacity;
3. the utility model discloses can provide the power supply for public railway car braking system through hydraulic motor.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a schematic illustration of a railway car operating on a rail;
fig. 2 is a schematic structural diagram of the hydraulic control system of the present invention;
FIG. 3 is a schematic structural view of the pressure regulating valve block of the present invention;
the reference numbers in the figures mean: the hydraulic control system comprises an energy accumulator 1, an energy accumulator switch 2, a pressure sensor 3, a two-way hydraulic lock 4, a first electromagnetic directional valve 5, a second electromagnetic directional valve 6, an overflow valve 7, a filter 8, a hydraulic pump 9, a one-way valve 10, a third electromagnetic directional valve 11, a pressure regulating valve block 12, a hydraulic motor 13, a rear guide oil cylinder 14, a front guide oil cylinder 15, a first oil tank 16 and a second oil tank 17.
Detailed Description
As shown in fig. 2 and fig. 3, the utility model improves the structure of the hydraulic control system of the existing highway and railway dual-purpose tractor, uses the hydraulic system to control the pressure of the oil cylinder to realize the automatic adjustment of the load of the tire, and ensures the running safety of the vehicle, and simultaneously, the tire load of the highway and railway vehicle can be automatically adjusted along with the speed when the railway vehicle runs, thereby reducing the abrasion of the tire; the utility model discloses can make the guide cylinder pressure of public railway vehicle in the railway operations change along with the speed size, realize public railway vehicle hydraulic system switching-over valve and the cooperation linkage of pressure regulating valve piece, make public railway vehicle exert its biggest tractive ability.
Further, the utility model discloses when using, mainly adjust control to the running state of the difference of the dual-purpose tractor of public railway, specifically include:
the road state is as follows:
at this time, the accumulator switch 2 is closed; the first, second and third reversing valves are in neutral positions; the front guide oil cylinder 15 is locked by a bidirectional hydraulic lock 4; the rear pilot cylinder 14 is locked by the pressure regulating valve block 12.
The running state of the railway single machine is as follows:
at the moment, the energy accumulator switch 2 is switched on, and the energy accumulator plays a role in ensuring the stability of the railway train running; the reversing valve 5 is in a middle position; the front guide oil cylinder 15 is locked by a bidirectional hydraulic lock 4, so that the safety of railway running is ensured; the rear guide oil cylinder 14 utilizes the pressure regulating valve block 12 to regulate the pressure of the rodless cavity of the oil cylinder according to the speed of the rail car.
The railway traction running state:
at the moment, the energy accumulator switch 2 is switched on, and the energy accumulator plays a role in ensuring the stability of the railway train running; the reversing valve 5 is in a neutral position; the front guide oil cylinder 15 is locked by a bidirectional hydraulic lock 4, so that the safety of railway running is ensured; the rear guide oil cylinder 14 ensures that the pressure value of a rodless cavity of the oil cylinder is constant by using the pressure regulating valve block 12, so that the maximum traction capacity of the railway vehicle is exerted; the tractor train needs air power, and the hydraulic motor 13 is opened through the reversing valve 11 to operate as required to provide an air power source for the railway brake system.
And (3) switching states of the male and the female:
aiming at the state of road-to-railway: at the moment, the reversing valve 5 is positioned at the left, the front guide oil cylinder 15 extends out, the reversing valve 6 is positioned at the left, the electromagnetic valve YA1 in the pressure regulating valve block 12 is positioned at the left, the electromagnetic valve YA2 is positioned at the right, and the front guide oil cylinder 15 extends out;
aiming at the state of railway-to-highway: at the moment, the reversing valve 5 is in the right position, the front guide oil cylinder 15 is retracted, the reversing valve 6 is in the right position, the electromagnetic valve YA1 in the pressure regulating valve block 12 is in the right position, the electromagnetic valve YA2 is in the right position, and the front guide oil cylinder 15 is retracted;
the method for controlling the pressure of the positive cavity of the guide oil cylinder after the speed of the rail car is adjusted comprises the following steps:
when the speed of the rail car rises, the pressure of the rear guide oil cylinder needs to be increased, the reversing valve 6 is in the left position, the electromagnetic valve YA1 in the pressure regulating valve block 12 is in the left position, hydraulic oil enters the rodless cavity of the oil cylinder, and the pressure increase of the rear guide oil cylinder is realized.
When the speed of the rail car is reduced, the pressure of the rear guide oil cylinder is correspondingly reduced, and the reversing valve 6 is in the left position; the electromagnetic valve YA1 in the pressure regulating valve block 12 is in the right position, hydraulic oil in the rodless cavity of the oil cylinder overflows to the oil tank through the overflow valve YA3, and pressure reduction of the rear guide oil cylinder is achieved.
The control method for ensuring the constant pressure value of the rodless cavity of the oil cylinder comprises the following steps:
when the train is towed by a railway vehicle, the pressure of a rear guide oil cylinder is increased by torque generated by backward pulling force of the train on the railway vehicle, so that the load of a tire is reduced, and the towing capacity of the railway vehicle is further reduced, therefore, when the railway vehicle is towed to run, the reversing valve 6 is in a left position, the electromagnetic valve YA1 in the pressure regulating valve block 12 is in a right position, and the electromagnetic valve YA2 is in a right position; when the pressure of the rodless cavity of the oil cylinder is increased, hydraulic oil overflows to the oil tank through the electromagnetic valve YA1 and the overflow valve YA3, and therefore the constant pressure value of the rodless cavity of the oil cylinder is guaranteed.
About the utility model discloses what the concrete structure needs to explain, the utility model discloses a each part module connection relation each other is definite, can realize, except that the special explanation in the embodiment, corresponding technological effect can be brought to its specific connection relation, and on the premise of not relying on corresponding software program execution, solve the technical problem that the utility model provides, the utility model discloses the model of the part that appears in, module, specific components and parts, mutual connected mode and, conventional use method, the predictable technological effect that bring by above-mentioned technical characteristics all belong to the patent that technical staff can acquire before the application day, periodical papers, technical manual, technical dictionary, the repeated description in the textbook, or belong to the prior art such as the conventional technique in this field, common general knowledge, need not for the technical scheme that the present case provided is clear, complete, can realize, and can reproduce or obtain corresponding entity product according to this technical means.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a dual-purpose tractor hydraulic control system of highway railway, includes back direction hydro-cylinder (14) and preceding direction hydro-cylinder (15), its characterized in that: the input ends of the rear guide oil cylinder (14) and the front guide oil cylinder (15) are both connected with an energy accumulator (1), and the output end of the energy accumulator (1) is provided with an energy accumulator switch (2);
the control end of the rear guide oil cylinder (14) is connected with the pressure regulating valve block (12) and the second electromagnetic directional valve (6) in sequence and then is connected with the oil tank module;
the control end of the front steering oil cylinder (15) is connected with the bidirectional hydraulic lock (4) and the first electromagnetic directional valve (5) in sequence and then is connected with the oil tank module;
the output end of the oil tank module is externally connected with a hydraulic motor (13) through a third electromagnetic directional valve (11);
the bidirectional hydraulic lock (4) and the pressure regulating valve block (12) are both provided with a pressure sensor (3);
the oil tank module is characterized in that a one-way valve (10) is connected in the output end of the oil tank module, the input end of the one-way valve (10) is connected with a first oil tank (16) and a second oil tank (17) respectively, an overflow valve (7) is arranged at the output end of the first oil tank (16), and a filter (8) and a hydraulic pump (9) are arranged at the output end of the second oil tank (17).
2. The hydraulic control system of the highway-railway tractor according to claim 1, wherein: an electromagnetic valve YA1 is further arranged on a first control loop of the pressure regulating valve block (12), and the electromagnetic valve YA1 is a one-way valve-one-way valve selection valve;
an electromagnetic valve YA2 is further arranged on a second control loop of the pressure regulating valve block (12), and the electromagnetic valve YA2 is specifically a one-way valve-passage selection valve;
a spill valve YA3 is also provided between the first control circuit and the second control circuit.
3. The hydraulic control system of the highway-railway tractor according to claim 1, wherein: the energy accumulator (1) is a diaphragm type energy accumulator, and the model is HNXQ-A/C.
4. The hydraulic control system of the highway-railway tractor according to claim 2, wherein: the models of the electromagnetic valve YA1 and the electromagnetic valve YA2 are LL12-217;
the overflow valve YA3 is YF10-02 in model.
5. The hydraulic control system of the highway-railway tractor according to claim 1, wherein: the models of the first electromagnetic reversing valve (5) and the second electromagnetic reversing valve (6) are 4WE6Y6X.
6. The hydraulic control system of the highway-railway tractor according to claim 1, wherein: the model of the bidirectional hydraulic lock (4) is VRDLG3/8.
7. The hydraulic control system of the highway-railway tractor according to claim 1, wherein: the model of the pressure sensor (3) is RPS0450.
8. The hydraulic control system of the highway-railway tractor according to claim 1, wherein: the type of the hydraulic pump (9) is V15A1R-95.
9. The hydraulic control system of the highway-railway tractor according to claim 1, wherein: the type of the hydraulic motor (13) is BM4-800.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223172767.1U CN218882629U (en) | 2022-11-29 | 2022-11-29 | Hydraulic control system of highway-railway dual-purpose tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223172767.1U CN218882629U (en) | 2022-11-29 | 2022-11-29 | Hydraulic control system of highway-railway dual-purpose tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218882629U true CN218882629U (en) | 2023-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223172767.1U Active CN218882629U (en) | 2022-11-29 | 2022-11-29 | Hydraulic control system of highway-railway dual-purpose tractor |
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| Country | Link |
|---|---|
| CN (1) | CN218882629U (en) |
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2022
- 2022-11-29 CN CN202223172767.1U patent/CN218882629U/en active Active
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