CN210290320U - Reversing valve body of load sensing valve - Google Patents
Reversing valve body of load sensing valve Download PDFInfo
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- CN210290320U CN210290320U CN201921166993.4U CN201921166993U CN210290320U CN 210290320 U CN210290320 U CN 210290320U CN 201921166993 U CN201921166993 U CN 201921166993U CN 210290320 U CN210290320 U CN 210290320U
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- reversing
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- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 94
- 230000009471 action Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a switching-over valve body of load sensing valve, including valve body, switching-over spring mechanism and pressure compensation case, the both ends of valve body are provided with first valve bonnet and second valve bonnet respectively, and the inboard of first valve bonnet is equipped with switching-over spring mechanism, and the overflow valve is installed to the topside department of valve body, and the jam is installed to the inboard of valve body. The reversing valve body of the load sensing valve comprises a valve body, a reversing spring mechanism and a pressure compensation valve core, wherein a pressure compensator is positioned at the front end of the reversing valve body, when the forces at the two ends of the pressure compensation valve core are balanced, the pressure compensation valve core is in a balanced state, so that the reversing valve can realize the flow distribution as required under the condition of sufficient flow of a hydraulic source.
Description
Technical Field
The utility model relates to a switching-over valve technical field specifically is a switching-over valve body of load sensing valve.
Background
The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. The valve realizes the communication, cut-off and reversal of hydraulic oil flow, pressure unloading and sequential action control. The valve is controlled by the relative movement direction of the valve core and the valve body. There are two types, a rotary valve type and a slide valve type. The valve core is divided into two positions, three positions and the like according to the number of the working positions of the valve core staying in the valve body; the oil way connected with the valve body is divided into a two-way, a three-way, a four-way, a six-way and the like; the movement modes of the operation valve core are manual, motor, electric, hydraulic, electrohydraulic and the like. The existing reversing valve body is complex in internal structure, parts are easy to damage, the whole valve body is high in manufacturing cost and not easy to maintain, and meanwhile, the existing reversing valve is poor in practicability due to the fact that the existing reversing valve cannot distribute flow according to needs due to design reasons.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a switching-over valve body of load sensing valve possesses the demand-based distribution that can realize the flow and prepares simple advantage, can solve the problem among the prior art.
In order to achieve the above object, the utility model provides a following technical scheme: a reversing valve body of a load sensing valve comprises a valve body, a reversing spring mechanism and a pressure compensation valve core, wherein a first valve cover and a second valve cover are respectively arranged at two ends of the valve body, a reversing spring mechanism is arranged on the inner side of the first valve cover, the reversing spring mechanism comprises a spring group, a reversing seat, a first push ring and a second push ring, the two ends of the spring group are respectively connected with the first push ring and the second push ring, the side wall of the first push ring is in contact with the first valve cover and the reversing seat, the second push ring is also in contact with the reversing seat, the reversing seat is also movably connected with a main valve core, a first oil way, a second oil way, a third oil way and a fourth oil way are arranged on the main valve core, the third oil way is positioned at the center of the main valve core, one end of the third oil way faces the reversing seat, the third oil way is connected with the first oil way, the second oil way and the fourth oil way, and the main valve core is movably connected, an overflow valve is installed at the top edge of the valve body, a plug is installed on the inner side of the valve body, a fifth oil path and a sixth oil path are formed in the plug, one end of the fifth oil path is communicated with the sixth oil path, a first spring and a second spring are movable at one end of the plug, the second spring is located on the inner side of the first spring, the first spring and the second spring are both movably connected with a pressure compensation valve core, an eighth oil path and a ninth oil path are formed in the pressure compensation valve core, one end of the ninth oil path is communicated with the eighth oil path, a plug is arranged at one end of the pressure compensation valve core, the pressure compensation valve core is in contact with the plug, and the plug, the pressure compensation valve core and the plug are.
Preferably, the first oil path, the second oil path and the fourth oil path are all perpendicular to the third oil path.
Preferably, two identical working ports are formed in the valve body, and the bottom ends of the two oil supply ports are respectively connected with the first oil path and the second oil path.
Preferably, the valve body is formed by casting, and the oil passages in the valve body are of a parallel structure.
Preferably, a seventh oil path is formed in the valve body, one end of the seventh oil path is communicated with the fourth oil path, and the other end of the seventh oil path is communicated with the fifth oil path.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the reversing valve body of the load sensing valve comprises a valve body, a reversing spring mechanism and a pressure compensation valve core, wherein a pressure compensator is positioned at the front end of the reversing valve body, when the forces at the two ends of the pressure compensation valve core are balanced, the pressure compensation valve core is in a balanced state, so that the reversing valve can realize the flow distribution as required under the condition of sufficient flow of a hydraulic source.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the main valve element of the present invention;
FIG. 3 is a schematic structural view of the reversing spring mechanism of the present invention;
fig. 4 is a schematic structural diagram of the pressure compensation valve core of the present invention;
fig. 5 is an overall hydraulic schematic diagram of the present invention.
In the figure: 1. a valve body; 101. a seventh oil passage; 2. an overflow valve; 3. a main valve element; 301. a first oil passage; 302. a second oil passage; 303. a third oil passage; 304. a fourth oil passage; 4. a first valve cover; 5. a reversing spring mechanism; 501. a spring set; 502. a reversing seat; 503. a first push ring; 504. a second push ring; 6. blocking; 601. a fifth oil passage; 602. a sixth oil passage; 7. a first spring; 8. a second spring; 9. a pressure compensating spool; 901. an eighth oil passage; 902. a ninth oil passage; 10. plugging by screwing; 11. a second valve housing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, a reversing valve body of a load sensing valve includes a valve body 1, a reversing spring mechanism 5 and a pressure compensation valve core 9, two ends of the valve body 1 are respectively provided with a first valve cover 4 and a second valve cover 11, the inner side of the first valve cover 4 is provided with the reversing spring mechanism 5, the reversing spring mechanism 5 includes a spring set 501, a reversing seat 502, a first push ring 503 and a second push ring 504, two ends of the spring set 501 are respectively connected with the first push ring 503 and the second push ring 504, a side wall of the first push ring 503 contacts the first valve cover 4 and the reversing seat 502, the second push ring 504 also contacts the reversing seat 502, the reversing seat 502 is also movably connected with a main valve core 3, the main valve core 3 is provided with a first oil path 301, a second oil path 302, a third oil path 303 and a fourth oil path 304, the first oil path 301, the second oil path 302 and the fourth oil path 304 are all perpendicular to the third oil path 303, diameters of the first oil path 301 and the second oil path 302 are the same, wherein the third oil path 303 is located at the center of the main valve element 3, one end of the third oil path 303 faces the reversing seat 502, the third oil path 303 connects the first oil path 301, the second oil path 302 and the fourth oil path 304, the main valve element 3 movably connects the valve body 1 and the second valve housing 11, two identical working ports, labeled as a and B in the drawing, are opened on the valve body 1, the bottom ends of the two working ports are respectively connected with the first oil path 301 and the second oil path 302, wherein the bottom end of the working port a is close to the first oil path 301, the bottom end of the working port B is close to the second oil path 302, the valve body 1 is formed by casting, machining is not needed, machining difficulty is greatly reduced, machining process is shortened, machining time is shortened, mass production is easy to realize, meanwhile, fewer parts are arranged in the valve body 1, manufacturing difficulty and cost are reduced, an oil inlet P is reserved in the valve body 1, An oil inlet P1 and an oil return port T, the oil paths in the valve body 1 are in a parallel structure, the work parts are not interfered with each other, the top edge of the valve body 1 is provided with an overflow valve 2, the inner side of the valve body 1 is provided with a plug 6, the plug 6 is provided with a fifth oil path 601 and a sixth oil path 602, one end of the fifth oil path 601 is communicated with the sixth oil path 602, the valve body 1 is provided with a seventh oil path 101, one end of the seventh oil path 101 is communicated with a fourth oil path 304, the other end of the seventh oil path 101 is communicated with the fifth oil path 601, namely, the seventh oil path 101 is communicated with the fourth oil path 304 and the fifth oil path 601, one end of the plug 6 is movably provided with a first spring 7 and a second spring 8, the second spring 8 is positioned at the inner side of the first spring 7, the first spring 7 and the second spring 8 are both movably connected with a pressure compensating valve spool 9, the pressure compensating valve spool 9 is provided with an eighth oil, one end of the pressure compensation valve core 9 is provided with a plug 10, the pressure compensation valve core 9 is contacted with the plug 10, and the plug 6, the pressure compensation valve core 9 and the plug 10 are movably connected. 1. A valve body; 101. a seventh oil passage; 2. an overflow valve; 3. a main valve element; 301. a first oil passage; 302. a second oil passage; 303. a third oil passage; 304. a fourth oil passage; 4. a first valve cover; 5. a reversing spring mechanism; 501. a spring set; 502. a reversing seat; 503. a first push ring; 504. a second push ring; 6. blocking; 601. a fifth oil passage; 602. a sixth oil passage; 7. a first spring; 8. a second spring; 9. a pressure compensating spool; 901. an eighth oil passage; 902. a ninth oil passage; 10. plugging by screwing; 11. second valve cover
The reversing valve body of the load sensing valve comprises a valve body 1, a reversing spring mechanism 5 and a pressure compensation valve core 9, wherein the reversing valve body is based on a load sensing principle, the pressure of a working port A or a working port B passes through a third oil path 303 and a fourth oil path 304 in a main valve core 3, passes through a seventh oil path 101 of the valve body 1, enters the left side of the pressure compensation valve core 9 through an internal sixth oil path 602 of a screw plug 6, namely a spring cavity, the pressure of a port P passes through an eighth oil path 901 and a ninth oil path 902 in the pressure compensation valve core 9, enters the right side of the pressure compensation valve core 9, namely no spring cavity, when the forces at two ends of the pressure compensation valve core 9 are balanced, the pressure compensation valve core 9 is in a balanced state, so that the reversing valve can realize the flow distribution as required under the condition that the hydraulic source flow is sufficient, the reversing valve is of a split type, most of the internal, the device has the advantages of easy processing, few internal parts, easy realization of mass production, application of the load sensing principle, independence of output flow and load pressure, and no mutual interference of actions during multi-connection combination.
In summary, the following steps: the reversing valve body of the load sensing valve comprises a valve body 1, a reversing spring mechanism 5 and a pressure compensation valve core 9, wherein a pressure compensator 9 is positioned at the front end of the reversing valve body, when forces at two ends of the pressure compensation valve core 9 are balanced, the pressure compensation valve core 9 is in a balanced state, so that the reversing valve can realize flow distribution as required under the condition of sufficient hydraulic source flow, the reversing valve is of a split type, most of a cavity in the valve body 1 adopts a casting process, the processing positions are few, the reversing valve is easy to process, the internal parts are few, mass production is easy to realize, meanwhile, the load sensing principle is applied, the output flow is unrelated to the load pressure, and the actions are not interfered with each other during multi.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a switching-over valve body of load sensing valve, includes valve body (1), switching-over spring mechanism (5) and pressure compensation case (9), its characterized in that: a first valve cover (4) and a second valve cover (11) are respectively arranged at two ends of the valve body (1), a reversing spring mechanism (5) is arranged on the inner side of the first valve cover (4), the reversing spring mechanism (5) comprises a spring group (501), a reversing seat (502), a first push ring (503) and a second push ring (504), two ends of the spring group (501) are respectively connected with the first push ring (503) and the second push ring (504), the side wall of the first push ring (503) is in contact with the first valve cover (4) and the reversing seat (502), the second push ring (504) is also in contact with the reversing seat (502), the reversing seat (502) is also movably connected with the main valve core (3), a first oil path (301), a second oil path (302), a third oil path (303) and a fourth oil path (304) are formed in the main valve core (3), wherein the third oil path (303) is located at the center of the main valve core (3), one end of a third oil path (303) faces a reversing seat (502), the third oil path (303) is connected with a first oil path (301), a second oil path (302) and a fourth oil path (304), a main valve core (3) is movably connected with a valve body (1) and a second valve cover (11), an overflow valve (2) is installed at the top edge of the valve body (1), a plug (6) is installed on the inner side of the valve body (1), a fifth oil path (601) and a sixth oil path (602) are arranged on the plug (6), one end of the fifth oil path (601) is communicated with the sixth oil path (602), a first spring (7) and a second spring (8) are movable at one end of the plug (6), the second spring (8) is located on the inner side of the first spring (7), the first spring (7) and the second spring (8) are both movably connected with a pressure compensation valve core (9), and an eighth oil path (901) and a ninth oil path (902) are arranged on the pressure compensation valve core (9), one end of the ninth oil way (902) is communicated with the eighth oil way (901), one end of the pressure compensation valve core (9) is provided with a plug (10), the pressure compensation valve core (9) is in contact with the plug (10), and the plug (6), the pressure compensation valve core (9) and the plug (10) are movably connected.
2. The reversing valve body of a load sensing valve according to claim 1, wherein: the first oil path (301), the second oil path (302) and the fourth oil path (304) are all perpendicular to the third oil path (303).
3. The reversing valve body of a load sensing valve according to claim 1, wherein: two identical working ports are formed in the valve body (1), and the bottom ends of the two oil supply ports are respectively connected with the first oil path (301) and the second oil path (302).
4. The reversing valve body of a load sensing valve according to claim 1, wherein: the valve body (1) is formed by casting, and oil passages in the valve body (1) are of a parallel structure.
5. The reversing valve body of a load sensing valve according to claim 1, wherein: the valve body (1) is provided with a seventh oil way (101), one end of the seventh oil way (101) is communicated with the fourth oil way (304), and the other end of the seventh oil way (101) is communicated with the fifth oil way (601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921166993.4U CN210290320U (en) | 2019-07-18 | 2019-07-18 | Reversing valve body of load sensing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921166993.4U CN210290320U (en) | 2019-07-18 | 2019-07-18 | Reversing valve body of load sensing valve |
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| Publication Number | Publication Date |
|---|---|
| CN210290320U true CN210290320U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921166993.4U Expired - Fee Related CN210290320U (en) | 2019-07-18 | 2019-07-18 | Reversing valve body of load sensing valve |
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| Country | Link |
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| CN (1) | CN210290320U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296117A (en) * | 2019-07-18 | 2019-10-01 | 宁波程锐液压科技有限公司 | A kind of commutation valve body of load-sensing valve |
| CN111577691A (en) * | 2020-04-20 | 2020-08-25 | 同济大学 | Low-pulsation flow control valve based on post-valve energy storage compensation |
-
2019
- 2019-07-18 CN CN201921166993.4U patent/CN210290320U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296117A (en) * | 2019-07-18 | 2019-10-01 | 宁波程锐液压科技有限公司 | A kind of commutation valve body of load-sensing valve |
| CN111577691A (en) * | 2020-04-20 | 2020-08-25 | 同济大学 | Low-pulsation flow control valve based on post-valve energy storage compensation |
| CN111577691B (en) * | 2020-04-20 | 2022-04-05 | 同济大学 | Low-pulsation flow control valve based on post-valve energy storage compensation |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 |