CN210317953U - Series-parallel hydraulic traveling system - Google Patents
Series-parallel hydraulic traveling system Download PDFInfo
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- CN210317953U CN210317953U CN201920342518.1U CN201920342518U CN210317953U CN 210317953 U CN210317953 U CN 210317953U CN 201920342518 U CN201920342518 U CN 201920342518U CN 210317953 U CN210317953 U CN 210317953U
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Abstract
The utility model relates to a series-parallel connection hydraulic walking system, include: the three-position three-way hydraulic control reversing valve is connected with the three-position three-way hydraulic control reversing valve through the three-position three-way hydraulic control reversing valve; when the two motors are connected in parallel, the output shaft rotates at a low speed, the output torque is correspondingly increased, and the motor is suitable for climbing road sections. When the vehicle is on a flat road, the vehicle needs small torque and high rotating speed, and when the vehicle climbs a slope, the vehicle needs large torque and low rotating speed, and the output power of the series circuit and the parallel circuit is the same. The utility model discloses be suitable for and install on the vehicle that needs the high-low speed to switch, manual control realizes the conversion of equipment high-low speed, realizes the speed difference, and power loss is little, the drive is steady, the cost obtains effective control.
Description
Technical Field
The utility model relates to an engineering van technical field, more specifically says, the utility model relates to a series-parallel connection hydraulic walking system.
Background
At present, the high and low speed of a traveling mechanism of a vehicle hydraulic system is switched by changing the flow rate of oil supplied by a variable pump so as to change the traveling speed. The high-speed and low-speed switching is single, and the flow is completely changed by a variable pump. When the steering wheel is turned, the speed of the inner wheel edge is the same as that of the outer wheel edge. The side with slow tire rotation speed drags the ground and slips during steering.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model also aims at providing a series-parallel connection hydraulic walking system.
In order to achieve the above object, the utility model provides a series-parallel connection hydraulic walking system, a serial communication port, include:
one end of the manual pump is connected to the oil tank through an oil pipe, the other end of the manual pump is connected with a second shuttle valve through an oil pipe, the second shuttle valve comprises a left oil port g1, a right oil port g2 and an upper oil port g3, the oil port g3 is connected with the manual pump through an oil pipe, and a third check valve is arranged on the oil pipe connected between the second shuttle valve and the manual pump;
the two-position three-way hydraulic control reversing valve comprises an oil port e1, an oil port e2 and an oil port e3, wherein the oil port e3 is connected to an oil tank through an oil pipe, and the oil port e1 is connected with an oil port g2 on the second shuttle valve through an oil pipe;
the three-position four-way hydraulic control reversing valve comprises an oil port m1, an oil port m2, an oil port m3 and an oil port m4, wherein the oil port m4 is connected with a first shuttle valve through a first check valve, the oil port m2 is communicated with a second check valve, and the second check valve is communicated with the first shuttle valve;
the manual two-position four-way reversing valve comprises a motor, a motor II, a three-position four-way hydraulic control reversing valve and a shuttle valve communicated with each other, and comprises an oil port A, an oil port B, an oil port P and an oil port T, wherein the oil port A is connected with the motor I, the oil port B is connected with the motor II and is connected with an oil port m3 on the three-position four-way hydraulic control reversing valve, the oil port P is connected with an oil port f1 on the shuttle valve I, and an unregulated valve is arranged on an oil pipe connected between the oil port B and the oil port m 3.
Preferably, when the manual two-position four-way reversing valve does not act, hydraulic oil flows into the first motor from the Pa inlet, and reaches Pb through the manual two-position four-way reversing valve and the second motor.
Preferably, when the manual two-position four-way reversing valve is operated manually for reversing, hydraulic oil flows into the manual two-position four-way reversing valve from the Pa inlet, flows into the manual two-position four-way reversing valve from the oil port P, flows out of the oil port B and flows into the second motor.
Preferably, the first shuttle valve, the second shuttle valve, the two-position three-way hydraulic control reversing valve, the first motor and the second motor are communicated through oil pipes.
Preferably, the manual pump, the three-way check valve, the two-way shuttle valve, the two-position three-way hydraulic control reversing valve, the first motor and the second motor are communicated through oil pipes.
Preferably, the first motor and the second motor are both connected with an oil tank.
Preferably, the first check valve, the second check valve and the third check valve have the same model and specification.
The utility model discloses at least, include following beneficial effect:
1. a series-parallel connection hydraulic traveling system, it realizes the high-speed rotation of series connection output shaft, output torque is corresponding to reduce for level land high-speed walking highway section. When in parallel connection, the output shaft rotates at a low speed, and the output torque is correspondingly increased, so that the device is used for climbing road sections. The vehicle requires a small torque and a high rotation speed when running on a flat road, and a large torque and a low rotation speed when climbing a slope. When the serial-parallel connection turns, the flow velocity of the inner tire and the flow velocity of the outer tire are different, the outer ring flow is enough, the pressure drop generated by the sub-damping is enough, and an external oil supplementing device is arranged.
2. A hydraulic traveling system of connecting in series-parallel, its motor adopts parking braking, A/B mouth oil circuit provides the oil source for motor braking through the shuttle valve when establishing ties or parallelly connected, installs the pilot operated valve additional simultaneously and can accomplish release fluid and have more the reliability.
3. A series-parallel connection hydraulic walking system, its simple structure, reasonable in design is fit for using widely.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a series-parallel hydraulic traveling system according to the present invention.
Fig. 2 shows a series circuit (the thick lines indicate hydraulic flows).
Fig. 3 shows parallel oil paths (the thick lines indicate hydraulic flows).
Fig. 4 shows a parking brake release oil path (a thick line indicates a flow of hydraulic pressure).
In the figure: 1. the hydraulic control shuttle valve comprises a first shuttle valve, a first check valve, a third-position four-way hydraulic control reversing valve, a fourth-position manual two-way reversing valve, a fifth-position motor, a sixth-position three-way hydraulic control reversing valve, a sixth.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1, fig. 2 and fig. 3, in one embodiment of the present invention, a series-parallel hydraulic walking system is provided, which includes:
one end of a manual pump 10 is connected to the oil tank through an oil pipe, the other end of the manual pump is connected with a second shuttle valve 9 through an oil pipe, the second shuttle valve 9 comprises a left oil port g1, a right oil port g2 and an upper oil port g3, the oil port g3 is connected with the manual pump 10 through an oil pipe, and a third check valve 11 is arranged on the oil pipe connected between the second shuttle valve 9 and the manual pump 10;
the two-position three-way hydraulic control reversing valve 7 comprises an oil port e1, an oil port e2 and an oil port e3, wherein the oil port e3 is connected to an oil tank through an oil pipe, and the oil port e1 is connected with an oil port g2 on the second shuttle valve 9 through an oil pipe;
the three-position four-way hydraulic control reversing valve 3 comprises an oil port m1, an oil port m2, an oil port m3 and an oil port m4, wherein the oil port m4 is connected with the first shuttle valve 1 through the first check valve 2, the oil port m2 is communicated with the second check valve 8, and the second check valve 8 is communicated with the first shuttle valve 1;
the manual two-position four-way reversing valve 4 is communicated with a motor 5, a motor 6, a three-position four-way hydraulic control reversing valve 3 and a shuttle valve 1, the manual two-position four-way reversing valve 4 comprises an oil port A, an oil port B, an oil port P and an oil port T, the oil port A is connected with the motor 5, the oil port B is connected with the motor 6 and connected with an oil port m3 on the three-position four-way hydraulic control reversing valve 3, the oil port P is connected with an oil port f1 on the shuttle valve 1, and the oil port B is provided with an unadjustable flow valve on an oil pipe connected between the oil ports m 3.
Further, when the manual two-position four-way reversing valve 4 does not act, hydraulic oil flows into the first motor 5 from the Pa inlet, and reaches Pb through the manual two-position four-way reversing valve 4 and the second motor 6.
Further, when the manual two-position four-way reversing valve 4 is operated manually for reversing, hydraulic oil flows into the manual two-position four-way reversing valve 4 from the Pa inlet and flows into the second motor 6 from the oil port P and the oil port B.
Further, the first shuttle valve 1, the second shuttle valve 9, the two-position three-way hydraulic control reversing valve 7, the first motor 5 and the second motor 6 are communicated through oil pipes.
Further, the manual pump 10, the third check valve 11, the second shuttle valve 9, the two-position three-way hydraulic control reversing valve 7, the first motor 5 and the second motor 6 are communicated through oil pipes.
Furthermore, the first motor 5 and the second motor 6 are both connected with an oil tank.
The utility model discloses a use method does: when the two motors are connected in series, and the manual two-position four-way reversing valve 4 does not act, hydraulic oil flows into the first motor 5 from the Pa inlet, and reaches Pb through the manual two-position four-way reversing valve 4 and the second motor 6. The series output shaft rotates at a high speed, the output torque is correspondingly reduced, and the device is suitable for a flat ground high-speed walking road section.
The two motors are connected in parallel, when the manual two-position four-way reversing valve 4 is operated manually for reversing, hydraulic oil flows into the manual two-position four-way reversing valve 4 from a Pa inlet, and flows into the second motor 6 from P to B; pa to motor number one 5 to Pb. When in parallel connection, the output shaft rotates at a low speed, the output torque is correspondingly increased, and the device is suitable for climbing road sections. The vehicle needs small torque and high rotation speed when the vehicle is on a flat road, and needs large torque and low rotation speed when the vehicle climbs a slope, and the output power of the loop is the same under the two conditions of series connection and parallel connection.
The inner and outer tires have different flow velocities during series-parallel steering, and the outer ring flow is ensured to be sufficient. And the Pa inlet oil reaches the manual two-position four-way reversing valve 4 through the first shuttle valve 1 to the three-position four-way hydraulic control reversing valve 3 to supplement the flow required by the second motor 6 during the steering.
When the hydraulic motor is normally started, hydraulic oil flows into the first motor 5 and the second motor 6 from Pa through the first shuttle valve 1, the second shuttle valve 9 and the two-position three-way hydraulic control reversing valve 7; the motor is turned on to release the parking brake.
When the vehicle has a fault, the manual pump 10 is manually operated, hydraulic oil is sucked into the three-way check valve 11 from the manual pump 10 and flows into the two-way shuttle valve 9, the two-position three-way hydraulic control reversing valve 7 and enters the first motor 5 and the second motor 6; the motor is turned on to release the parking brake.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application suitable for this invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details shown and described herein without departing from the general concept defined by the claims and their equivalents.
Claims (7)
1. A series-parallel hydraulic traveling system, characterized by comprising:
one end of the manual pump is connected to the oil tank through an oil pipe, the other end of the manual pump is connected with a second shuttle valve through an oil pipe, the second shuttle valve comprises a left oil port g1, a right oil port g2 and an upper oil port g3, the oil port g3 is connected with the manual pump through an oil pipe, and a third check valve is arranged on the oil pipe connected between the second shuttle valve and the manual pump;
the two-position three-way hydraulic control reversing valve comprises an oil port e1, an oil port e2 and an oil port e3, wherein the oil port e3 is connected to an oil tank through an oil pipe, and the oil port e1 is connected with an oil port g2 on the second shuttle valve through an oil pipe;
the three-position four-way hydraulic control reversing valve comprises an oil port m1, an oil port m2, an oil port m3 and an oil port m4, wherein the oil port m4 is connected with a first shuttle valve through a first check valve, the oil port m2 is communicated with a second check valve, and the second check valve is communicated with the first shuttle valve;
the manual two-position four-way reversing valve comprises a motor, a motor II, a three-position four-way hydraulic control reversing valve and a shuttle valve communicated with each other, and comprises an oil port A, an oil port B, an oil port P and an oil port T, wherein the oil port A is connected with the motor I, the oil port B is connected with the motor II and is connected with an oil port m3 on the three-position four-way hydraulic control reversing valve, the oil port P is connected with an oil port f1 on the shuttle valve I, and an unregulated valve is arranged on an oil pipe connected between the oil port B and the oil port m 3.
2. The series-parallel hydraulic traveling system according to claim 1, wherein when the manual two-position four-way reversing valve is not actuated, hydraulic oil flows into the first motor from the Pa inlet, and reaches Pb through the manual two-position four-way reversing valve and the second motor.
3. The series-parallel hydraulic traveling system as claimed in claim 1, wherein during manual operation and reversing of the manual two-position four-way reversing valve, hydraulic oil flows into the manual two-position four-way reversing valve from the Pa inlet, flows into the oil port P from the oil port B, and flows into the motor II.
4. The series-parallel hydraulic traveling system according to claim 1, wherein the first shuttle valve, the second shuttle valve, the two-position three-way hydraulic control reversing valve, the first motor and the second motor are communicated through oil pipes.
5. The series-parallel hydraulic traveling system according to claim 1, wherein the manual pump, the three-way check valve, the two-way shuttle valve, the two-position three-way hydraulic control reversing valve, the first motor and the second motor are communicated through oil pipes.
6. The series-parallel hydraulic traveling system according to claim 1, wherein the first motor and the second motor are both connected with an oil tank.
7. The series-parallel hydraulic traveling system according to claim 1, wherein the first check valve, the second check valve and the third check valve are the same in model number and specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920342518.1U CN210317953U (en) | 2019-03-19 | 2019-03-19 | Series-parallel hydraulic traveling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920342518.1U CN210317953U (en) | 2019-03-19 | 2019-03-19 | Series-parallel hydraulic traveling system |
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| CN210317953U true CN210317953U (en) | 2020-04-14 |
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| CN201920342518.1U Active CN210317953U (en) | 2019-03-19 | 2019-03-19 | Series-parallel hydraulic traveling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980979A (en) * | 2020-06-29 | 2020-11-24 | 武汉船用机械有限责任公司 | Hydraulic control system for swing mechanism |
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2019
- 2019-03-19 CN CN201920342518.1U patent/CN210317953U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980979A (en) * | 2020-06-29 | 2020-11-24 | 武汉船用机械有限责任公司 | Hydraulic control system for swing mechanism |
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