CN218266555U - Hydraulic system and working machine - Google Patents
Hydraulic system and working machine Download PDFInfo
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- CN218266555U CN218266555U CN202221846990.7U CN202221846990U CN218266555U CN 218266555 U CN218266555 U CN 218266555U CN 202221846990 U CN202221846990 U CN 202221846990U CN 218266555 U CN218266555 U CN 218266555U
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Abstract
The utility model relates to the technical field of hydraulic systems, and provides a hydraulic system and an operating machine, wherein the hydraulic system comprises an oil supply module; the first control valve group and the second control valve group are arranged in parallel and are connected with the oil supply module; the first switching valve group is connected with the first control valve group through a pipeline; the second switching valve group is connected with the second control valve group through a pipeline; the first switching valve group is used for switching the first action oil path and the second action oil path; and the second switching valve group is used for realizing the switching of the second action oil path and the third action oil path. The utility model provides a hydraulic system and operation machinery, second action oil circuit both can be controlled through first valve unit, can increase the control mode of second working oil circuit again through second valve unit control, satisfies different operant's different operation custom.
Description
Technical Field
The utility model relates to a hydraulic system technical field especially relates to a hydraulic system and operation machinery.
Background
For work machines, it is common to apply hydraulic systems, which are generally used to transmit power and motion by increasing the force by changing the pressure.
In some cases, the hydraulic system may perform the driving and controlling of the hoist in the working machine, for example, in the case of a crane, during the hoisting and lowering of the hoist of the crane, the hoisting and lowering of the hoist are realized by opening and closing a main valve pilot oil for controlling the hoisting and lowering of the hoist through a manipulating handle by an operator. The crane has three actions of ascending and descending of a main variable-amplitude winch, ascending and descending of an auxiliary variable-amplitude winch and rotation, and the three actions are respectively called as a first action, a second action and a third action.
In the prior art, as shown in fig. 1, a first control valve set generally controls a first action, and a second control valve set switches a second action and a third action through a first switching valve set.
However, the above manipulation manner has a great limitation, and only the second action and the third action can be switched, and the manipulation habits of different operators cannot be satisfied.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydraulic system and operation machinery for solve the defect that hydraulic system among the prior art can not satisfy the operation custom that different manipulators are different, realize that same action can be controlled through the control valve of difference.
The utility model provides a hydraulic system, include:
an oil supply module;
the first control valve group and the second control valve group are arranged in parallel and are connected with the oil supply module;
the first switching valve group is connected with the first control valve group through a pipeline;
the second switching valve group is connected with the second control valve group through a pipeline;
the first switching valve group is used for switching a first action oil path and a second action oil path; and the second switching valve group is used for realizing the switching of a second action oil path and a third action oil path.
According to the utility model provides a pair of hydraulic system, second action oil circuit includes proportional valve group and pilot operated valve, proportional valve group with first switching valves or the second switches the valves and connects, the pilot operated valve with proportional valve group connects.
According to the hydraulic system provided by the utility model, the proportional valve group is provided with a first oil inlet and a second oil inlet, and the first oil inlet is connected with the first switching valve group or the second switching valve group; the second oil inlet is connected with the first switching valve group or the second switching valve group.
According to the utility model provides a pair of hydraulic system, first oil inlet through first shuttle valve with first switching valves or the second switches the valves and connects, the second oil inlet through the second shuttle valve with first switching valves or the second switches the valves and connects.
According to the utility model provides a pair of hydraulic system, first shuttle valve with the second shuttle valve is the tee bend shuttle valve.
According to the utility model provides a pair of hydraulic system, first switching valves with the second switches the valves and all includes two-position four-way solenoid directional valves.
According to the utility model provides a pair of hydraulic system, the oil feed module includes:
the oil tank is used for providing hydraulic oil;
a hydraulic pump for providing power;
and one end of the pressure reducing overflow valve group is sequentially connected with the hydraulic pump and the oil tank, and the other end of the pressure reducing overflow valve group is connected with the first control valve group and the second control valve group.
According to the utility model provides a pair of hydraulic system, first action oil circuit second action oil circuit with one of them is the gyration oil circuit in the third action oil circuit, and the other is main amplitude of fluctuation hoist control oil circuit, and another one is vice amplitude of fluctuation hoist control oil circuit.
According to the utility model provides a pair of hydraulic system, second action oil circuit is vice change width of cloth hoist control oil circuit.
The utility model also provides a crane, include: a hydraulic system as described above.
The utility model provides a hydraulic system, which is connected with a first control valve set through a first switching valve set, and a second switching valve set is connected with a second control valve set; the first switching valve group realizes switching of the first action oil path and the second action oil path, and switching of the second action oil path and the third action oil path is realized through the second switching valve group, namely, the second action oil path can be controlled by the first control valve group and the second control valve group, the control mode of the second working oil path is increased, and different operation habits of different operators are met.
The utility model provides a working machine, owing to include hydraulic system as above, consequently possess as above various advantages.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a hydraulic system provided in the prior art;
FIG. 2 is a hydraulic system provided by the present invention;
reference numerals:
1. an oil supply module; 2. a first control valve group; 3. a second control valve group; 4. a first switching valve group; 5. a second switching valve group; 6. a proportional valve bank; 7. a hydraulic control valve; 8. a first shuttle valve; 9. a second shuttle valve; 11. an oil tank; 12. a hydraulic pump; 13. and a pressure reducing overflow valve group.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings in the present invention will be combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
The hydraulic system of the present invention is described with reference to fig. 2, and includes an oil supply module 1, a first control valve set 2, a second control valve set 3, a first switching valve set 4 and a second switching valve set 5, where the first control valve set 2 and the second control valve set 3 are connected in parallel and are both connected to the oil supply module 1; the first switching valve group 4 is connected with the first control valve group 2 through a pipeline; the second switching valve group 5 is connected with the second control valve group 3 through a pipeline; the first switching valve group 4 is used for switching the first action oil path and the second action oil path; the second switching valve group 5 is used for switching the second working oil path and the third working oil path.
As shown in fig. 2, the hydraulic system provided by the present invention is connected to the first control valve set 2 through the first switching valve set 4, and the second switching valve set 5 is connected to the second control valve set 3; the switching of first action oil circuit and second action oil circuit is realized through first switching valves 4, and the switching of second action oil circuit and third action oil circuit is realized through second switching valves 5, promptly, the second action oil circuit both can be controlled through first control valves 2, can increase the control mode of second working oil circuit again through the control of second control valves 3, satisfies the different operation custom of different opera-tors.
Moreover, through the arrangement, the simultaneous control of the first action and the second work, the simultaneous control of the second action and the third action, the simultaneous control of the first action and the third action and the flexibility of the control of the first action, the second action and the third action can be realized.
The embodiment of the utility model provides an in, the second action oil circuit includes proportional valve group 6 and pilot operated valve 7, and proportional valve group 6 is connected with first switching valve group 4, second switching valve group 5, and pilot end and the proportional valve group 6 of pilot operated valve 7 are connected. The proportional valve group 6 is used for proportional control of the flow rate of the hydraulic oil flowing through the proportional valve group, and the speed of the first action, the second action and the third action can be controlled by proportional control of the flow rate of the hydraulic oil flowing to the pilot end of the hydraulic control valve 7. The hydraulic control valve 7 is used for realizing the conduction of the second action oil path, the hydraulic control valve 7 is a lifting hydraulic control valve 7, the flow direction and the flow quantity of hydraulic oil flowing to a hydraulic motor (not shown in the figure) are controlled through the lifting hydraulic control valve 7, the hydraulic motor winch is directly or indirectly connected, and then the lifting hydraulic control valve 7 can drive the winch to ascend or descend.
The embodiment of the present invention provides that the proportional valve group 6 has a first oil inlet and a second oil inlet, the first oil inlet is connected to the first switching valve group 4 or the second switching valve group 5, and the second oil inlet is connected to the first switching valve group 4 or the second switching valve group 5. When the first oil inlet is communicated with the oil path between the hydraulic pump 12, hydraulic oil pumped out by the hydraulic pump 12 flows to the pilot end on one side of the lifting hydraulic control valve 7 through the first oil inlet, so that a lifting state can be realized; on the contrary, when the oil path between the second oil inlet and the hydraulic pump 12 is connected, the hydraulic oil pumped by the hydraulic pump 12 flows to the pilot end on one side of the hydraulic control valve 7 through the second oil inlet, and the lowering state can be realized. The first oil inlet can be communicated with the first control valve group 2 through the first switching valve group 4, and can also be communicated with the second control valve group 3 through the second switching valve group 5; the second oil inlet can be communicated with the second control valve group 3 through the second switching valve group 5, and also can be communicated with the first control valve group 2 through the first switching valve group 4.
The utility model discloses an in the embodiment, first oil inlet is connected with first switching valve group 4 or second switching valve group 5 through first shuttle valve 8, and the second oil inlet also can be connected with first switching valve group 4 or second switching valve group 5 through second shuttle valve 9. The first shuttle valve 8 and the second shuttle valve 9 are three-way shuttle valves. A first path of the first shuttle valve 8 is communicated with the first switching valve group 4, a second path of the first shuttle valve is communicated with the second switching valve group 5, and a third path of the first shuttle valve is communicated with the first oil inlet. The first path of the second shuttle valve 9 is communicated with the first switching valve group 4, the second path is communicated with the second switching valve group 5, and the third path is communicated with the second oil inlet, so that the first oil inlet and the second oil inlet can be selectively connected with the first switching valve group 4 or the second switching valve group 5, and can be communicated with one of the first switching valve group 4 and the second switching valve group 5 only without being communicated simultaneously.
The arrangement of the first shuttle valve 8 and the second shuttle valve 9 enables the first oil inlet and the second oil inlet to be communicated with the first switching valve group 4 or the second switching valve group 5 only, namely, one side with large pressure is communicated, and the control of the first control valve group 2 and the second control valve group 3 on the second action oil way can be realized.
Furthermore, the first switching valve group 4 and the second switching valve group 5 both include two-position four-way electromagnetic directional valves, and different action oil paths can be communicated by switching the positions of the first switching valve group 4 and the second switching valve group 5.
When the left side of the first control valve group 2 is conducted, the left valve of the first switching valve group 4 is conducted; further, when the left valve of the first switching valve group 4 is located at the left position, the hydraulic oil flows into the second action oil path; when the left valve of the first switching valve group 4 is located at the right position, the hydraulic oil flows into the first operating oil passage.
When the right side of the first control valve group 2 is turned on, the right valve of the first switching valve group 4 is turned on. Further, when the right valve of the first switching valve group 4 is located at the left position, the hydraulic oil flows into the second actuating oil path, and when the right valve of the first switching valve group 4 is located at the right position, the hydraulic oil flows into the first actuating oil path.
Similarly, when the left side of the second control valve group 3 is switched on, the left valve of the second switching valve group 5 is switched on, and further, when the left valve of the second switching valve group 5 is located at the left position, hydraulic oil flows into the second action oil path; when the left valve of the second switching valve group 5 is located at the right position, the hydraulic oil flows into the third actuating oil path.
When the right side of the second control valve group 3 is conducted, the right valve of the second switching valve group 5 is conducted, and further, when the right valve of the second switching valve group 5 is located at the left position, hydraulic oil flows into a second action oil way; when the right valve of the second switching valve group 5 is located at the right position, the hydraulic oil flows into the third actuating oil path.
The utility model discloses an in the embodiment, fuel feeding module 1 includes oil tank 11, hydraulic pump 12 and decompression overflow valves 13, and oil tank 11 is used for providing hydraulic oil, and hydraulic pump 12 is used for providing power, and oil tank 11 connects gradually hydraulic pump 12 and decompression overflow valves 13 through the pipeline, and first valve unit 2 and second valve unit 3 are connected to the other end of decompression overflow valves 13. The pressure reducing and overflowing valve group 13 can ensure that the pressure of hydraulic oil input into the first control valve group 2 and the second control valve group 3 is a stable value, so that the fluctuation of the oil pressure is reduced, and the stability is improved.
Specifically, one of the first, second, and third actuation oil paths is a rotary oil path (not shown), the other is a main amplitude winch control oil path, and the other is an auxiliary amplitude winch control oil path (not shown). Specifically, the second actuation oil path is an auxiliary variable amplitude winch control oil path (not shown in the figure).
The working process of the hydraulic system will be described below by taking the second operating oil path as an auxiliary variable amplitude winch as an example.
As shown in fig. 2, when the first control valve group 2 controls the auxiliary variable-amplitude winch to ascend, the left side of the first control valve group 2 is pressed, the oil circuit is connected to the left side of the first control valve group 2, the left position of the left valve of the first switching valve group 4 is communicated, and hydraulic oil enters the proportional valve group 6 of the second working oil circuit through the first shuttle valve 8, so that the communication of the hydraulic control valve 7 is realized, and the ascending action of the auxiliary variable-amplitude winch is realized.
When the vice width of cloth hoist of first valve unit 2 control is transferred, press 2 right sides of first valve unit, the oil circuit is switched on 2 right sides of first valve unit, and the left position of the 4 right valves of first switching valve unit switches on, and hydraulic oil passes through the proportional valve group 6 that second shuttle valve 9 got into second working oil circuit, switches on with the second oil inlet to realize switching on of liquid accuse valve 7, realize the action of transferring of vice width of cloth hoist.
When the second control valve group 3 controls the auxiliary variable-amplitude winch to ascend, the left side of the second control valve group 3 is pressed, the oil circuit is communicated with the left side of the second control valve group 3, the left position of the left valve of the second switching valve group 5 is communicated, and hydraulic oil enters the proportional valve group 6 of the second working oil circuit through the first left valve, so that the communication of the hydraulic control valve 7 is realized, and the ascending action of the auxiliary variable-amplitude winch is realized.
When the auxiliary variable-amplitude winch is controlled by the second control valve group 3 to be lowered, the right side of the second control valve group 3 is pressed, the right side of the second control valve group 3 is communicated with the oil circuit, the left position of the right valve of the second switching valve group 5 is communicated, hydraulic oil enters the proportional valve group 6 of the second working oil circuit through the second shuttle valve 9 and is communicated with the second oil inlet, and therefore the communication of the hydraulic control valve 7 is achieved, and the lowering action of the auxiliary variable-amplitude winch is achieved.
It should be noted that "connection" described in the above embodiments is understood as "oil passage connection" or "pipe connection" unless explicitly defined.
The utility model discloses an embodiment of another aspect has used foretell hydraulic system, realizes that vice width of cloth hoist has multiple manipulation mode, can switch between vice width of cloth hoist and the gyration, also can switch between vice width of cloth hoist and the main width of cloth hoist, and it is more convenient to operate to adapt to different operating habits of different manipulators.
In the embodiment of the present invention, the type of the working machine is not limited, and the working machine may be a crane, an excavator, a drilling machine, or the like, for example. In other words, the hydraulic system of the present invention may be used as long as the working machine can use the hydraulic system.
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 it; 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 technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A hydraulic system, comprising:
an oil supply module;
the first control valve group and the second control valve group are arranged in parallel and are connected with the oil supply module;
the first switching valve group is connected with the first control valve group through a pipeline;
the second switching valve group is connected with the second control valve group through a pipeline;
the first switching valve group is used for switching a first action oil path and a second action oil path; and the second switching valve group is used for realizing the switching of a second action oil path and a third action oil path.
2. The hydraulic system according to claim 1, wherein the second operation oil passage includes a proportional valve group connected to the first switching valve group or the second switching valve group, and a pilot control valve connected to the proportional valve group.
3. The hydraulic system of claim 2, wherein the proportional valve block has a first oil inlet and a second oil inlet, the first oil inlet being connected with the first switching valve block or the second switching valve block; the second oil inlet is connected with the first switching valve group or the second switching valve group.
4. The hydraulic system of claim 3, wherein the first oil inlet is connected to the first switching valve block or the second switching valve block through a first shuttle valve, and the second oil inlet is connected to the first switching valve block or the second switching valve block through a second shuttle valve.
5. The hydraulic system of claim 4, wherein the first shuttle valve and the second shuttle valve are three-way shuttle valves.
6. The hydraulic system of claim 1, wherein the first and second switching valve banks each include two-position, four-way solenoid directional valves.
7. The hydraulic system of claim 1, wherein the oil supply module comprises:
the oil tank is used for providing hydraulic oil;
a hydraulic pump for providing power;
and one end of the pressure reducing overflow valve group is sequentially connected with the hydraulic pump and the oil tank, and the other end of the pressure reducing overflow valve group is connected with the first control valve group and the second control valve group.
8. The hydraulic system according to claim 1, wherein one of the first, second, and third operating oil passages is a rotary oil passage, the other is a main amplitude winch control oil passage, and the other is an auxiliary amplitude winch control oil passage.
9. The hydraulic system as claimed in claim 8, wherein the second operating oil passage is a secondary luffing winch control oil passage.
10. A working machine, characterized in that it comprises a hydraulic system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221846990.7U CN218266555U (en) | 2022-07-18 | 2022-07-18 | Hydraulic system and working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221846990.7U CN218266555U (en) | 2022-07-18 | 2022-07-18 | Hydraulic system and working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218266555U true CN218266555U (en) | 2023-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221846990.7U Active CN218266555U (en) | 2022-07-18 | 2022-07-18 | Hydraulic system and working machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218266555U (en) |
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2022
- 2022-07-18 CN CN202221846990.7U patent/CN218266555U/en active Active
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