CN212427324U - Hydraulic valve group and excavator - Google Patents
Hydraulic valve group and excavator Download PDFInfo
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- CN212427324U CN212427324U CN202020960702.5U CN202020960702U CN212427324U CN 212427324 U CN212427324 U CN 212427324U CN 202020960702 U CN202020960702 U CN 202020960702U CN 212427324 U CN212427324 U CN 212427324U
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Abstract
The utility model belongs to the technical field of the engineering vehicle technique and specifically relates to a hydraulic pressure valves and excavator is related to, and hydraulic pressure valves includes: the hydraulic excavator comprises a first valve and a second valve, wherein when a valve core of the first valve is in a preset state, the first valve is communicated with a bucket cylinder of the excavator at the same time to form a first communicated oil path, and when a valve core of the second valve is in a preset state, the second valve is communicated with the bucket cylinder of the excavator at the same time to form a second communicated oil path. The application provides a hydraulic pressure valves can make the scraper bowl of excavator realize the function of floating, is applicable to various operational environment, even if ground, the road surface unevenness in work place, the excavator scraper bowl still can smoothly push away the tie, the operation of leveling, does not need the manual work to adjust the height of scraper bowl repeatedly according to the road surface roughness, is showing the work efficiency who improves the excavator.
Description
Technical Field
The application relates to the technical field of engineering vehicles, in particular to a hydraulic valve group and an excavator.
Background
At present, a wheel type excavator has simple dozer blade function and structure form, and basically comprises a set of parallelogram structure, a dozer blade oil cylinder and an oil inlet and return oil path of the oil cylinder. When the soil spade is used for pushing the ground, the height of the soil spade needs to be frequently adjusted so as to prevent the leveling function of the soil spade from losing when the ground where the whole machine is located is uneven.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a hydraulic valve group and an excavator, and the technical problem that the height of a dozer blade needs to be frequently adjusted when the dozer blade pushes the ground surface in the prior art is solved to a certain extent.
The application provides a hydraulic valve group includes:
the first valve can be communicated with a first cavity of an oil cylinder of the bucket;
the second valve can be communicated with a second cavity of the oil cylinder of the bucket;
the first valve and the second valve can be communicated with an oil tank.
In the above technical solution, further, the hydraulic valve set further includes a switch, and the first valve and the second valve are electrically connected to the switch.
In any of the above technical solutions, further, the first valve at least includes a first conduction port, a second conduction port, a third conduction port and a fourth conduction port, when the switch is closed, the first cavity, the first conduction port, the second conduction port, the third conduction port and the fourth conduction port are sequentially communicated, and the fourth conduction port is communicated with the oil tank.
In any one of the above technical solutions, the second valve further includes at least a fifth conduction port, a sixth conduction port, a seventh conduction port, and an eighth conduction port, when the switch is closed, the second cavity, the fifth conduction port, the sixth conduction port, the seventh conduction port, and the eighth conduction port are sequentially communicated, and the eighth conduction port is communicated with the oil tank.
In any of the above technical solutions, further, the fourth conduction opening is communicated with the fifth conduction opening.
In any of the above technical solutions, further, the first valve is a two-position four-way solenoid valve, and the second valve is a two-position two-way solenoid valve.
In any of the above technical solutions, further, one of the first cavity and the second cavity is a rod cavity of the bucket cylinder, and the other of the first cavity and the second cavity is a rodless cavity of the bucket cylinder.
The application still provides an excavator, including any one of the above-mentioned technical scheme hydraulic valve group and dozer blade, therefore, have all beneficial technological effects of this hydraulic valve group, here, no longer describe repeatedly.
In the above technical solution, further, the excavator further includes a main control valve for controlling the blade.
In any of the above technical solutions, further, the valve core of the main control valve is a four-position valve core, and a fourth position of the four-position valve core can be Y-shaped.
Compared with the prior art, the beneficial effect of this application is:
the application provides a hydraulic valve group includes: the first valve is communicated with a bucket cylinder and an oil tank (the oil tank is used for supplying oil to the bucket cylinder) of the excavator at the same time when a valve core of the first valve is in a preset state to form a first communicating oil path, the second valve is communicated with the bucket cylinder and the oil tank (the oil tank is used for supplying oil to the bucket cylinder) of the excavator at the same time when the valve core of the second valve is in the preset state to form a second communicating oil path, in the state, the bucket of the excavator is in a floating state, the bucket can always float and is above the ground by the self weight of the bucket to ensure the leveling function of the bucket, when the excavator works on uneven ground, the bucket can automatically float according to the flatness of the ground through the two communicating oil paths, particularly, when a certain place below the bucket is propped against the bucket by foreign matters, the bucket floats upwards under the action of force, and after the excavator drives the bucket, the bucket floats downwards under the action of self gravity and returns to the original state close to the ground, and the leveling work is continued.
Therefore, the hydraulic valve group can enable the bucket of the excavator to achieve the floating function, is suitable for various working environments, even if the ground and the road surface of a working site are uneven, the bucket of the excavator can still be smoothly pushed and leveled and shoveled, the height of the bucket is not required to be manually adjusted repeatedly according to the road surface flatness, and the working efficiency of the excavator is remarkably improved.
The application provides an excavator, including the aforesaid hydraulic pressure valves, therefore, make the scraper bowl machine oil floating function of excavator through this hydraulic pressure valves, can normally push away the work of tie, shovel on the road surface of unevenness, application scope is wide, and the practicality is strong.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an oil path schematic diagram of a hydraulic valve group provided in an embodiment of the present application.
Reference numerals: 1-a first valve, 101-a first conduction port, 102-a second conduction port, 103-a third conduction port, 104-a fourth conduction port, 2-a second valve, 201-a fifth conduction port, 202-a sixth conduction port, 203-a seventh conduction port, 204-an eighth conduction port, A-a first cavity, B-a second cavity and T-an oil tank.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
A hydraulic valve block and excavator according to some embodiments of the present application are described below with reference to fig. 1.
Example one
Referring to fig. 1, an embodiment of the present application provides a hydraulic valve block, including: the first valve 1 can be communicated with a first cavity A of an oil cylinder of the bucket; the second valve 2 can be communicated with a second cavity B of the oil cylinder of the bucket; both the first valve 1 and the second valve 2 can communicate with the tank T.
The application provides a hydraulic valve group includes: a first valve 1 and a second valve 2, wherein, when the valve core of the first valve 1 is in a predetermined state, the first valve 1 is simultaneously communicated with a bucket cylinder and an oil tank T (oil tank for supplying oil to the bucket cylinder) of the excavator to form a first conduction oil path, when the valve core of the second valve 2 is in a predetermined state, the second valve 2 is simultaneously communicated with the bucket cylinder and the oil tank T (oil tank for supplying oil to the bucket cylinder) of the excavator to form a second conduction oil path, under the state, the bucket of the excavator is in a floating state, and the bucket can always float on the ground by the self weight of the bucket to ensure the leveling function of the bucket, when the excavator works on uneven ground, the bucket can automatically float according to the flatness of the ground through two paths of the conduction oil paths, particularly, when a certain place below the bucket is propped against the bucket by foreign matters, the bucket floats upwards under the action of force, and after the excavator drives the bucket, the bucket floats downwards under the action of self gravity and returns to the original state close to the ground, and the leveling work is continued.
Therefore, the hydraulic valve group can enable the bucket of the excavator to achieve the floating function, is suitable for various working environments, even if the ground and the road surface of a working site are uneven, the bucket of the excavator can still be smoothly pushed and leveled and shoveled, the height of the bucket is not required to be manually adjusted repeatedly according to the road surface flatness, and the working efficiency of the excavator is remarkably improved.
Preferably, the hydraulic valve group further comprises a switch, and the first valve 1 and the second valve 2 are both electrically connected with the switch.
In this embodiment, the valve body states of the first valve 1 and the second valve 2 can be controlled by controlling the switches to be closed or opened.
Preferably, the first valve 1 is a two-position four-way solenoid valve and the second valve 2 is a two-position two-way solenoid valve.
In this embodiment, when the switch is in the closed state, the spool of the first valve 1 and the spool of the second valve 2 are both in the working positions, so that the first oil passage and the second oil passage are both in the on state, and at this time, the bucket of the excavator has a floating function.
Preferably, the first valve 1 at least comprises a first conduction port 101, a second conduction port 102, a third conduction port 103 and a fourth conduction port 104, when the switch is closed, the first cavity a, the first conduction port 101, the second conduction port 102, the third conduction port 103 and the fourth conduction port 104 are communicated in sequence, and the fourth conduction port 104 is communicated with the oil tank T.
Further, the second valve 2 at least includes a fifth conduction port 201, a sixth conduction port 202, a seventh conduction port 203 and an eighth conduction port 204, when the opening and closing are performed, the second cavity B, the fifth conduction port 201, the sixth conduction port 202, the seventh conduction port 203 and the eighth conduction port 204 are communicated in sequence, and the eighth conduction port 204 is communicated with the oil tank T.
In the embodiment, after the switch is closed, the first conduction opening 101, the second conduction opening 102, the third conduction opening 103 and the fourth conduction opening 104 communicate the first cavity A of the bucket cylinder with the oil tank T, when the bucket is contacted with the bottom surface of the (uneven) ground to cause the bucket to float upwards or descend, the hydraulic oil in the first cavity A can be dredged into the oil tank T, the oil tank T can also supplement the hydraulic oil into the first cavity A in time, meanwhile, the fifth conduction port 201, the sixth conduction port 202, the seventh conduction port 203 and the eighth conduction port 204 communicate the second cavity B of the bucket cylinder with the oil tank T, when the bucket floats upwards or descends due to the fact that the bucket is in contact with the bottom surface of the (uneven) ground, hydraulic oil in the second cavity B can be dredged to the oil tank T, the oil tank T can also supplement hydraulic oil to the second cavity B in time, and the bucket can float upwards or descend flexibly.
Preferably, the fourth conduction opening 104 is communicated with the fifth conduction opening 201.
In this embodiment, the fourth conduction port 104 of the first valve 1 is communicated with the fifth conduction port 201 of the second valve core, so that not only the floating function of the bucket is ensured, but also the first conduction oil path and the second conduction oil path are partially overlapped, and unnecessary oil paths are saved.
Preferably, one of the first cavity A and the second cavity B is a rod cavity of the bucket cylinder, and the other of the first cavity A and the second cavity B is a rodless cavity of the bucket cylinder.
In this embodiment, the bucket cylinder has two cavities, namely a first cavity a and a second cavity B, that is, a large cavity and a small cavity commonly found in the prior art, one of the cavities and the first valve form a first communicating oil path, and the other cavity and the second valve form a second communicating oil path, so that the floating function of the bucket can be realized without defining a valve body corresponding to the first cavity a (or the second cavity B).
Example two
An embodiment of the present application further provides an excavator (not shown in the drawings), including the hydraulic valve set and the dozer blade described in any of the above embodiments, so that all the beneficial technical effects of the hydraulic valve set are achieved, and the description is omitted here.
Preferably, the excavator further comprises a main control valve for controlling the blade.
Preferably, the spool of the main control valve is a four-position spool, and a fourth one of the four-position spools can be Y-shaped.
In this embodiment, among the prior art, the control valve of the dozer blade of excavator often is three-position case, in this application, the case of main control valve is four-position case, importantly, the fourth machine among the four-position case can be the Y type, under this condition, when the case department fourth position of main control valve, can switch on scraper bowl hydro-cylinder and oil tank equally, that is to say, also can make the dozer blade have the function of floating, make excavator accessible control main control valve, the unsteady function of dozer blade is realized to hydraulic pressure valves two kinds of modes, can the alternative use, also can both choose for use simultaneously, make the dozer blade more nimble, still can normally work under the harsher condition.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A hydraulic valve block for a bucket of an excavator, comprising:
the first valve (1) can be communicated with a first cavity A of an oil cylinder of the bucket;
a second valve (2) capable of communicating with a second cavity B of the cylinder of the bucket;
the first valve (1) and the second valve (2) can be communicated with an oil tank T.
2. Hydraulic valve group according to claim 1, characterized in that it further comprises a switch, with which both the first valve (1) and the second valve (2) are electrically connected.
3. A hydraulic valve group according to claim 2, characterized in that said first valve (1) comprises at least a first conduction port 101, a second conduction port 102, a third conduction port 103 and a fourth conduction port 104, when said switches are closed, said first chamber a, said first conduction port 101, said second conduction port 102, said third conduction port 103 and said fourth conduction port 104 are in communication in sequence, and said fourth conduction port 104 is in communication with said tank T.
4. A hydraulic valve group according to claim 3, characterized in that said second valve (2) comprises at least a fifth conductance port 201, a sixth conductance port 202, a seventh conductance port 203 and an eighth conductance port 204, when said switches are closed, said second chamber B, said fifth conductance port 201, said sixth conductance port 202, said seventh conductance port 203 and said eighth conductance port 204 are in communication in sequence, and said eighth conductance port 204 is in communication with the tank T.
5. The hydraulic valve block of claim 4, wherein the fourth conductance port 104 communicates with the fifth conductance port 201.
6. Hydraulic valve group according to claim 1, characterized in that said first valve (1) is a two-position four-way solenoid valve and said second valve (2) is a two-position two-way solenoid valve.
7. The hydraulic valve block of claim 1, wherein one of the first chamber a and the second chamber B is a rod chamber of a cylinder of the dipper and the other of the first chamber a and the second chamber B is a rodless chamber of a cylinder of the dipper.
8. An excavator comprising the hydraulic valve block of any one of claims 1 to 7 and a dozer blade.
9. The excavator of claim 8 further comprising a main control valve for controlling the blade.
10. The excavator of claim 9 wherein the spool of the main control valve is a four position spool and a fourth one of the four position spools is capable of being Y-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020960702.5U CN212427324U (en) | 2020-05-29 | 2020-05-29 | Hydraulic valve group and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020960702.5U CN212427324U (en) | 2020-05-29 | 2020-05-29 | Hydraulic valve group and excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212427324U true CN212427324U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020960702.5U Active CN212427324U (en) | 2020-05-29 | 2020-05-29 | Hydraulic valve group and excavator |
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|---|---|
| CN (1) | CN212427324U (en) |
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- 2020-05-29 CN CN202020960702.5U patent/CN212427324U/en active Active
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