CN210317950U - Single-direction and two-direction oil way switching system and excavator - Google Patents
Single-direction and two-direction oil way switching system and excavator Download PDFInfo
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- CN210317950U CN210317950U CN201921200534.3U CN201921200534U CN210317950U CN 210317950 U CN210317950 U CN 210317950U CN 201921200534 U CN201921200534 U CN 201921200534U CN 210317950 U CN210317950 U CN 210317950U
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Abstract
The utility model provides a single two-way oil circuit switched systems and excavator, through increasing single two-way oil circuit diverter valve, when an excavator uses one-way oil circuit and two-way oil circuit simultaneously, but automatic identification operation provides one-way return circuit and two-way return circuit according to the accessory, no longer switches through the mode of changing the pipeline, has practiced thrift operating time, has improved the operating efficiency, has avoided the pollution to the environment because of dismantling the hydraulic pressure oil pipe and arouse simultaneously hydraulic pressure leakage.
Description
Technical Field
The disclosure relates to the technical field of engineering machinery, in particular to a one-way and two-way oil way switching system and an excavator.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The excavator is used as an important machine for basic construction, working conditions are subdivided along with the continuous improvement of Chinese urbanization and personnel use cost, the multiple purposes of one excavator become an industry development trend, each excavator can be matched with multiple accessories to carry out different working condition operations, and the excavator is required to frequently change working accessories in the working process.
However, the inventor of the present disclosure finds that, in a research, hydraulic circuits for different accessories are different, and the accessory replacement can be completed only by detaching an adjusting pipeline, so that the operation time is long and the operation is inconvenient.
Disclosure of Invention
In order to solve the defects of the prior art, the single-direction and two-direction oil path switching system and the excavator are provided by the disclosure, through the addition of the single-direction and two-direction oil path switching valve, when one excavator uses a single-direction oil path and a two-direction oil path at the same time, the operation can be automatically identified, the single-direction loop and the two-direction loop are provided according to accessories, the switching is not carried out in a pipeline replacing mode, the operation time is saved, the operation efficiency is improved, and meanwhile, the pollution to the environment caused by the leakage of hydraulic oil due to the removal of a hydraulic.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
in a first aspect, the present disclosure provides a one-way or two-way oil path switching system;
a single-way and two-way oil path switching system comprises a main pump, a pilot valve, a switching valve, an energy accumulator, a filter, a radiator, a hydraulic oil tank, a single-way and two-way switching valve and a first accessory, wherein the main pump is connected with the switching valve;
the single-direction and two-direction switching valve at least comprises a first valve core and a second valve core, a second path of the first oil supply pipeline is connected with an oil inlet of the single-direction and two-direction switching valve, the oil inlet of the single-direction and two-direction switching valve is connected with a first oil port of the first valve core, a second oil port of the first valve core is connected with a first oil port of the second valve core, the first valve core is pushed to change direction according to oil pressure transmitted by the pilot valve through the second oil supply pipeline, the second valve core is opened, an oil outlet of the first accessory is connected with a first oil port of the second valve core, and a second oil port of the second valve core is connected with a hydraulic oil tank sequentially through an energy accumulator, a.
As some possible implementation manners, the first accessory is a breaking hammer, the breaking hammer comprises an oil inlet and an oil outlet, the oil inlet of the breaking hammer is connected with the switching valve through a first valve, and the oil outlet of the breaking hammer is connected with a second oil port of the second valve core through a second valve.
As some possible implementations, the connections are all oil supply line connections.
As a further limitation, the oil outlet of the first accessory is connected with an oil supply pipeline between the second oil port of the first valve core and the first oil port of the second valve core.
As a further limitation, the pilot valve further comprises a second accessory, the pilot valve further comprises a second oil supply pipeline, the second oil supply pipeline is connected with the switching valve, the one-way and two-way switching valve further comprises a third valve core, a first oil port of the third valve core is connected with the switching valve, a second oil port of the third valve core is connected with a third oil port of the second valve core, a second oil port of the second valve core is connected with a first oil port of the second accessory, a second oil port of the second accessory is connected with the switching valve, and the switching valve is connected with a hydraulic oil tank after passing through a radiator.
As a further limitation, the second accessory is a wood clamping device, the wood clamping device comprises a large oil cylinder cavity and a small oil cylinder cavity, a first oil port is arranged on the small oil cylinder cavity, and a second oil port is arranged on the large oil cylinder cavity.
As a further limitation, a first change-over switch is included for controlling the first oil supply conduit to supply oil or the second oil supply conduit to supply oil.
As a further limitation, the first oil port of the second accessory is connected with an oil supply pipe between the second oil port of the first valve core and the first oil port of the second valve core.
As a further limitation, the first accessory is an accessory for unidirectional oil path control, and the second accessory is an accessory for bidirectional oil path control.
In a second aspect, the present disclosure provides an excavator, including the unidirectional and bidirectional oil path switching system of the present disclosure.
Compared with the prior art, the beneficial effect of this disclosure is:
the disclosure adds the one-way and two-way oil path switching valve, so that when one excavator uses the one-way oil path and the two-way oil path at the same time, the operation can be automatically identified.
The one-way loop and the two-way loop are provided according to the accessory, switching is not performed in a pipeline replacement mode, operation time is saved, operation efficiency is improved, and pollution to the environment caused by hydraulic oil leakage due to dismantling of a hydraulic oil pipe is avoided.
Drawings
Fig. 1 is a schematic view of an oil path control structure of a crushing hammer of an excavator in the prior art according to embodiment 1 of the present disclosure.
Fig. 2 is a schematic view of an oil path control structure of a configured carpentry clamp of an excavator in the prior art according to embodiment 1 of the present disclosure.
Fig. 3 is a schematic diagram of an oil path control structure of a unidirectional/bidirectional oil path switching system according to embodiment 1 of the present disclosure.
1. A main pump; 2. a switching valve; 3. a pilot valve; 4. a breaking hammer; 5. clamping a woodware; 6. an accumulator; 7. a filter; 8. a heat sink; 9. a hydraulic oil tank; 10. a one-way and two-way oil way switching valve; 10-1, a first valve core; 10-2, a second valve core; 10-3 and a third valve core.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example 1:
as shown in fig. 1, the breaking hammer 4 in the prior art is adapted to be a one-way loop, pressure is generated by operating an ① port of the pilot valve 3 to push the switching valve 2 to change direction, hydraulic oil of the main pump 1 enters the breaking hammer 4 through the switching valve 2, return oil of the breaking hammer 4 flows into the hydraulic oil tank 9 after passing through the accumulator 6, the filter 7 and the radiator 8, and otherwise, the operation cannot be performed.
As shown in fig. 2, the carpenter clamp 5 in the prior art is suitable for a two-way loop, the pilot valve 3 is operated to enable the ① port to generate pilot pressure, the switching valve 2 is switched to the left position, the hydraulic oil of the main pump 1 enters the B port of the carpenter clamp cylinder large cavity through the switching valve 2, the return oil of the a port of the carpenter clamp small cavity returns to the radiator 8 and the hydraulic oil tank 9 through the switching valve, otherwise, the pilot valve 3 is operated to enable the ② port to generate pilot pressure, the switching valve 2 is switched to the right position, the hydraulic oil of the main pump 1 enters the a port of the carpenter clamp cylinder small cavity through the switching valve 2, and the return oil of the B port of the carpenter clamp large cavity returns to.
As shown in fig. 3, embodiment 1 of the present disclosure provides a one-way and two-way oil path switching system, including a main pump 1, a pilot valve 3, a switching valve 2, an accumulator 6, a filter 7, a radiator 8, a hydraulic oil tank 9, a one-way and two-way switching valve 10, and a first accessory, where the main pump 1 is connected to the switching valve 2, the pilot valve 3 at least includes a first oil supply pipeline ①, the first oil supply pipeline is divided into two paths, the first path is connected to the switching valve 2, and the switching valve 2 is connected to an oil inlet B port of the first accessory;
the single-double direction switching valve 10 at least comprises a first valve core 10-1 and a second valve core 10-2, a second path of a first oil supply pipeline is connected with a pi port of the single-double direction switching valve 10, the pi port of the single-double direction switching valve 10 is connected with a first oil port of the first valve core, a second oil port of the first valve core 10-1 is connected with a first oil port of the second valve core 10-2, the first valve core 10-1 is pushed to change direction according to oil pressure transmitted by the pilot valve 3 through a second oil supply pipeline, the second valve core 10-2 is opened, an oil outlet A port of a first accessory is connected with a first oil port of the second valve core 10-2, and a second oil port T port of the second valve core 10-2 is connected with a hydraulic oil tank 9 sequentially through an energy accumulator 6, a filter 7 and a radiator 8.
The first accessory is a breaking hammer 4, the breaking hammer 4 comprises an oil inlet B and an oil outlet A, the oil inlet B of the breaking hammer 4 is connected with the switching valve 2 through a first valve, the oil outlet A of the breaking hammer 4 is connected with a second oil port of the second valve core 10-2 through a second valve, and the connection is oil supply pipeline connection.
An oil outlet of the first accessory is connected with an A port of an oil supply pipeline between a second oil port of the first valve core 10-1 and a first oil port of the second valve core 10-2.
The pilot valve 3 further comprises a second accessory, the pilot valve 3 further comprises a second oil supply pipeline ②, the second oil supply pipeline ② is connected with the switching valve 2, the one-way and two-way switching valve 10 further comprises a third valve core 10-3, a first oil port of the third valve core 10-3 is connected with the switching valve, a second oil port of the third valve core 10-3 is connected with a third oil port of the second valve core 10-2, a second oil port of the second valve core 10-2 is connected with a first oil port of the second accessory, a second oil port of the second accessory is connected with the switching valve 2, and the switching valve 2 is connected with a hydraulic oil tank after passing through the radiator 8.
The second accessory is a wood clamping device 5, the wood clamping device 5 comprises a large oil cylinder cavity and a small oil cylinder cavity, a first oil port A is formed in the small oil cylinder cavity, and a second oil port B is formed in the large oil cylinder cavity.
A first change-over switch is also included for controlling the first oil supply conduit ① to supply oil or the second oil supply conduit ② to supply oil.
And a first port A of the second accessory is connected with a port A of an oil supply pipeline between a second oil port of the first valve core 10-1 and a first oil port of the second valve core 10-2.
The first accessory is an accessory controlled by a one-way oil way, and the second accessory is an accessory controlled by a two-way oil way.
The breaking hammer 4 and the wood clamping device 5 in fig. 3 of this embodiment cannot be installed on the excavator at the same time, and can only be installed one at the same time, in order to explain the principle, two accessories are drawn on the same schematic diagram, and the main loop diagram of the wood clamping device is indicated by a dotted line, so that the pipeline does not need to be replaced when the two accessories are switched by the system, and the specific explanation is as follows:
(1) breaking hammer mode:
the ① port of the pilot valve 3 is operated to generate pressure to push the switching valve 2 to change direction, hydraulic oil of the main pump 1 enters the B port of the breaking hammer 4 through the switching valve 2, return oil of the breaking hammer reaches the A port of the one-way and two-way oil-way switching valve 10 through the oil outlet A port of the breaking hammer, when the pilot valve 3 is operated, the pressure is simultaneously transmitted to the pi port of the one-way and two-way oil-way switching valve 10 to push the 10-1 valve core to change direction, at the moment, the valve core 10-2 is opened, return oil of the breaking hammer passes through the oil outlet A port of the breaking hammer, then reaches the T port from the 10-2 in the one-way and two-way oil.
(2) A wood clamping mode:
and (3) clamping, namely operating the pilot valve 3 to enable the port ① to generate pilot pressure, switching the reversing valve 2 to the left position, enabling hydraulic oil of the main pump 1 to enter a large oil cylinder cavity B of the wood clamping device 5 through the switching valve 2 and enter a large oil cylinder cavity, enabling a small oil cylinder cavity A of the wood clamping device 5 to reach a port A of the one-way and two-way oil way switching valve 10, simultaneously transmitting the pressure to a port pi of the one-way and two-way oil way switching valve 10 to push a 10-1 valve core to reverse when operating the pilot valve 3, opening the valve core 10-2 at the moment, enabling return oil of the breaking hammer to pass through the oil outlet A of the breaking hammer, enabling the return oil of the breaking hammer to reach a port T from a second valve core 10-2.
And (3) unloading, namely operating the pilot valve 3 to enable the port ② to generate pilot pressure, switching the reversing valve 2 to the right position, enabling hydraulic oil of the main pump 1 to enter the port B of the one-way and two-way switching valve 10 through the switching valve 2, enabling the hydraulic oil to reach the port A of the one-way and two-way switching valve 10 through the third valve core 10-3 and the second valve core 10-2, enabling the port A of the one-way and two-way switching valve 10 to be communicated with the port A of the wood clamping device 5, starting unloading the wood clamping device, enabling large-cavity oil of the wood clamping cylinder to reach the switching valve 2 through the port.
Example 2:
the embodiment 2 of the present disclosure provides an excavator, which includes the unidirectional and bidirectional oil path switching system described in the embodiment 1 of the present disclosure.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (10)
1. A single-way and two-way oil path switching system is characterized by comprising a main pump, a pilot valve, a switching valve, an energy accumulator, a filter, a radiator, a hydraulic oil tank, a single-way and two-way switching valve and a first accessory, wherein the main pump is connected with the switching valve;
the single-direction and two-direction switching valve at least comprises a first valve core and a second valve core, a second path of the first oil supply pipeline is connected with an oil inlet of the single-direction and two-direction switching valve, the oil inlet of the single-direction and two-direction switching valve is connected with a first oil port of the first valve core, a second oil port of the first valve core is connected with a first oil port of the second valve core, the first valve core is pushed to change direction according to oil pressure transmitted by the pilot valve through the second oil supply pipeline, the second valve core is opened, an oil outlet of the first accessory is connected with a first oil port of the second valve core, and a second oil port of the second valve core is connected with a hydraulic oil tank sequentially through an energy accumulator, a.
2. The one-way and two-way oil path switching system of claim 1, wherein the first accessory is a breaking hammer, the breaking hammer comprises an oil inlet and an oil outlet, the oil inlet of the breaking hammer is connected with the switching valve through a first valve, and the oil outlet of the breaking hammer is connected with a second oil port of the second valve core through a second valve.
3. The system of claim 1, wherein said connections are all oil supply line connections.
4. The one-way and two-way oil path switching system of claim 3, wherein the oil outlet of the first accessory is connected with an oil supply pipeline between the second oil port of the first valve core and the first oil port of the second valve core.
5. The system of claim 3, further comprising a second accessory, wherein the pilot valve further comprises a second oil supply pipeline, the second oil supply pipeline is connected to the switching valve, the unidirectional/bidirectional switching valve further comprises a third valve core, a first oil port of the third valve core is connected to the switching valve, a second oil port of the third valve core is connected to a third oil port of the second valve core, a second oil port of the second valve core is connected to the first oil port of the second accessory, a second oil port of the second accessory is connected to the switching valve, and the switching valve is connected to the hydraulic oil tank after passing through the radiator.
6. The system according to claim 5, wherein the second accessory is a wood clamping device, the wood clamping device comprises a cylinder big cavity and a cylinder small cavity, the cylinder small cavity is provided with a first oil port, and the cylinder big cavity is provided with a second oil port.
7. The system of claim 5, further comprising a first switch for controlling the supply of oil from the first oil supply conduit or the supply of oil from the second oil supply conduit.
8. The one-way or two-way oil path switching system of claim 5, wherein the first oil port of the second accessory is connected to an oil supply line between the second oil port of the first valve spool and the first oil port of the second valve spool.
9. The one-way or two-way oil path switching system according to claim 5, wherein the first accessory is an accessory for one-way oil path control and the second accessory is an accessory for two-way oil path control.
10. An excavator comprising the unidirectional/bidirectional oil path switching system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921200534.3U CN210317950U (en) | 2019-07-29 | 2019-07-29 | Single-direction and two-direction oil way switching system and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921200534.3U CN210317950U (en) | 2019-07-29 | 2019-07-29 | Single-direction and two-direction oil way switching system and excavator |
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| Publication Number | Publication Date |
|---|---|
| CN210317950U true CN210317950U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921200534.3U Active CN210317950U (en) | 2019-07-29 | 2019-07-29 | Single-direction and two-direction oil way switching system and excavator |
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| Country | Link |
|---|---|
| CN (1) | CN210317950U (en) |
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- 2019-07-29 CN CN201921200534.3U patent/CN210317950U/en active Active
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Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee after: Lovol Heavy Industry Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee before: LOVOL Engineering Machinery Group Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |