CN210829934U - Hydraulic combination valve - Google Patents
Hydraulic combination valve Download PDFInfo
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- CN210829934U CN210829934U CN201921350909.4U CN201921350909U CN210829934U CN 210829934 U CN210829934 U CN 210829934U CN 201921350909 U CN201921350909 U CN 201921350909U CN 210829934 U CN210829934 U CN 210829934U
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- oil source
- switching system
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Abstract
The hydraulic combination valve comprises an oil source switching system and an auxiliary connection control system which are connected in series, wherein the oil source switching system comprises a first oil source switching system and a second oil source switching system which are connected in parallel. The first oil source switching system comprises a first oil source switching valve which is a two-position two-way electromagnetic valve; the second oil source switching system comprises a second oil source switching valve which is a two-position three-way electromagnetic valve. The hydraulic combination valve is compact in structure, safe and reliable, and can meet the hydraulic oil circuit arrangement with different flow requirements.
Description
Technical Field
The utility model relates to a valve, in particular to hydraulic combination valve belongs to engineering machine tool technical field.
Background
Engineering machinery is no longer a machine for working under a single working condition, for example, an excavator except for excavating earthwork is provided with a breaking hammer and a hydraulic shear to form a building dismantling device. Further, as a loader which is generally a scraper, various accessories have been widely equipped as a mobile oil source in foreign countries to realize multi-functional work, and as many as 120 kinds of accessories are currently available. The different working conditions of various accessories cause great differences in the flow rate of required mobile equipment (loaders and excavators). At present, the engineering machinery does not consider the diversification of accessories and has single output hydraulic oil source, thereby limiting the application range of the engineering machinery.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model discloses aim at overcoming the not enough of current hydrovalve, provide a combination valve of safety, reliable, multiple oil supply.
The technical scheme is as follows: the hydraulic combination valve comprises an oil source switching system and an auxiliary connection control system which are connected in series, wherein the oil source switching system comprises a first oil source switching system and a second oil source switching system which are connected in parallel. The first oil source switching system comprises a first oil source switching valve which is a two-position two-way electromagnetic valve; the second oil source switching system comprises a second oil source switching valve which is a two-position three-way electromagnetic valve. Therefore, three flows can enter the auxiliary joint control system by controlling the on-off of the two-position three-way electromagnetic valve and the two-position two-way electromagnetic valve, and different requirements of various accessories on the flows are met.
Preferably, in order to reduce the number of hydraulic elements in the oil path control arrangement and ensure the reliability of the oil source, the second oil source switching system further comprises an oil source check valve and an overflow valve, and the oil passing through the oil source check valve flows to the second oil source switching valve; and the overflow valve sets a pressure threshold value of the second oil source switching system.
Preferably, in order to further ensure the reliability of the oil source, the second oil source switching system further comprises an oil way check valve, and the oil passing through the oil source check valve flows to the second oil source switching valve and the oil way check valve in sequence.
Preferably, in order to further reduce the number of hydraulic elements in the oil path control arrangement, the hydraulic combination valve further comprises two oil return ports, and the two oil return ports are communicated with each other.
Preferably, in order to meet the requirements of control of different accessories, the auxiliary joint control system comprises a first auxiliary joint control valve and a second auxiliary joint control valve; the first auxiliary joint control valve is a two-position three-way electromagnetic valve; the second auxiliary joint control valve is a three-position four-way electromagnetic valve.
Has the advantages that: the utility model discloses a hydraulic pressure combination valve compact structure, safe and reliable can satisfy the hydraulic pressure oil circuit of different flow demands and arrange.
Drawings
Fig. 1 is an example 1 of a hydraulic combination valve of the present invention;
fig. 2 is an example 2 of the hydraulic combination valve of the present invention;
fig. 3 is an example 3 of the hydraulic combination valve of the present invention;
fig. 4 is an example 4 of the hydraulic combination valve of the present invention;
fig. 5 shows an example 5 of the hydraulic combination valve of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments, which are only used for illustrating the present invention and are not used for limiting the scope of the present invention.
As shown in fig. 1, a hydraulic combination valve includes an oil source switching system 1, an auxiliary joint control system 2, and two oil return ports 3, where the oil source switching system 1 and the auxiliary joint control system 2 are connected in series, and the two oil return ports 3 are communicated with each other. The oil source switching system 1 comprises a first oil source switching system 11 and a second oil source switching system 12, and the first oil source switching system 11 and the second oil source switching system 12 are connected in parallel. The first oil source switching system 11 includes a first oil source switching valve 111, the first oil source switching valve 111 is a two-position two-way electromagnetic valve, and an oil inlet is an a port. The second oil source switching system 12 includes a second oil source switching valve 121, an oil source check valve 122, an overflow valve 123, and an oil path check valve 124, and the oil inlet is an H-port. The second oil source switching valve 121 is a two-position three-way electromagnetic valve, and the oil passing through the oil source check valve 122 flows to the second oil source switching valve 121 and the oil passage check valve 124 in sequence. The relief valve 123 sets a pressure threshold of the second source switching system 12. The auxiliary joint control system 2 comprises a first auxiliary joint control valve 21 and a second auxiliary joint control valve 22; the first auxiliary joint control valve 21 is a two-position three-way electromagnetic valve; the second auxiliary joint control valve 22 is a three-position four-way solenoid valve. The F port is an auxiliary oil return port, so that the use of an oil return joint is avoided. The G port is an oil return port of the hydraulic combination valve, and the oil returned by the auxiliary linkage finally flow out through the G port.
The second source switching valve 121 controls whether the hydraulic source of the H port participates in the operation, and when the hydraulic source is located at the position shown in fig. 1, the hydraulic oil of the H port directly flows out through the G port. When the second source switching valve 121 is activated, the oil in the H port enters the oil path of the system, the maximum pressure of the hydraulic oil in the H port is set by the relief valve 123, and when the pressure in the H port exceeds the pressure set by the relief valve 123, the hydraulic oil in the H port flows to the G port through the relief valve 123. The first source switching valve 111 controls whether the hydraulic oil of the port a participates in the operation, when the first source switching valve 111 is in the position shown in fig. 1, the hydraulic oil of the port a does not enter the oil path, and when the first source switching valve 111 is activated, the hydraulic oil of the port a enters the oil path of the system. The oil at the port a and the oil at the port H can both enter the first auxiliary joint control valve 21 and the second auxiliary joint control valve 22, so that three flows can be realized by controlling the on-off of the first oil source switching valve 111 and the second oil source switching valve 121 to enter the first auxiliary joint control valve 21 and the second auxiliary joint control valve 22, that is, the oil at the port a enters, the oil at the port H enters, and the oil at the port a and the oil at the port H enter together. The first auxiliary joint control valve 21 is a flow switching valve that can switch the flow of the hydraulic oil to the port B or the port C. The second auxiliary joint control valve 22 can realize the mode that the hydraulic oil returns to the port D when flowing to the port E, and returns to the port D when flowing to the port E.
As shown in fig. 2, the maximum pressure of the oil at the port a and the port H can be controlled by the relief valve 123 by eliminating the oil passage check valve 124, when the first oil source switching valve 111 and the second oil source switching valve 121 are powered, the oil at the port a and the oil at the port H are merged, and when the system pressure is higher than the set pressure of the relief valve 123, the oil at the port a and the oil at the port H simultaneously flow to the port G after being opened from the relief valve 123. As shown in fig. 3, 4, and 5, the auxiliary joint control system 2 may further include a third auxiliary joint control valve 23 and the like to be matched with different accessories.
Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that the embodiments may be modified or changed without departing from the spirit of the present invention, and still fall within the scope of the present invention.
Claims (6)
1. The utility model provides a hydraulic combination valve, includes oil source switched systems (1) and supplementary antithetical couplet control system (2), and both establish ties mutually, its characterized in that: the oil source switching system (1) comprises a first oil source switching system (11) and a second oil source switching system (12), and the first oil source switching system (11) and the second oil source switching system (12) are connected in parallel.
2. The hydraulic combination valve of claim 1, wherein: the first oil source switching system (11) comprises a first oil source switching valve (111), and the first oil source switching valve (111) is a two-position two-way electromagnetic valve; the second oil source switching system (12) comprises a second oil source switching valve (121), and the second oil source switching valve (121) is a two-position three-way electromagnetic valve.
3. The hydraulic combination valve of claim 2, wherein: the second oil source switching system (12) further comprises an oil source one-way valve (122) and an overflow valve (123), and oil passing through the oil source one-way valve (122) flows to the second oil source switching valve (121); and the overflow valve (123) sets a pressure threshold value of the second oil source switching system (12).
4. A hydraulic combination valve according to claim 3, wherein: the second oil source switching system (12) further comprises an oil way one-way valve (124), and oil passing through the oil source one-way valve (122) flows to the second oil source switching valve (121) and the oil way one-way valve (124) in sequence.
5. The hydraulic combination valve of claim 4, wherein: the hydraulic combination valve further comprises two oil return ports (3), and the two oil return ports (3) are communicated.
6. The hydraulic combination valve according to any one of claims 1 to 5, wherein: the auxiliary joint control system (2) comprises a first auxiliary joint control valve (21) and a second auxiliary joint control valve (22); the first auxiliary joint control valve (21) is a two-position three-way electromagnetic valve; the second auxiliary joint control valve (22) is a three-position four-way electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921350909.4U CN210829934U (en) | 2019-08-20 | 2019-08-20 | Hydraulic combination valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921350909.4U CN210829934U (en) | 2019-08-20 | 2019-08-20 | Hydraulic combination valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210829934U true CN210829934U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921350909.4U Active CN210829934U (en) | 2019-08-20 | 2019-08-20 | Hydraulic combination valve |
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| CN (1) | CN210829934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486345A (en) * | 2019-08-20 | 2019-11-22 | 江苏柳工机械有限公司 | Combined hydraulic valve |
-
2019
- 2019-08-20 CN CN201921350909.4U patent/CN210829934U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486345A (en) * | 2019-08-20 | 2019-11-22 | 江苏柳工机械有限公司 | Combined hydraulic valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201119 Address after: No. 588 Yancheng South Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: LIUGONG CHANGZHOU MACHINERY Co.,Ltd. Address before: The town of Nanjing Road 212002 Zhenjiang city of Jiangsu Province, Runzhou District No. 1 Patentee before: Jiangsu Liugong Machinery Co.,Ltd. |
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| TR01 | Transfer of patent right |