CN115596879A - Hydraulic valve driver and hydraulic valve - Google Patents
Hydraulic valve driver and hydraulic valve Download PDFInfo
- Publication number
- CN115596879A CN115596879A CN202211319740.2A CN202211319740A CN115596879A CN 115596879 A CN115596879 A CN 115596879A CN 202211319740 A CN202211319740 A CN 202211319740A CN 115596879 A CN115596879 A CN 115596879A
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- hydraulic valve
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- transmission structure
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- 230000005540 biological transmission Effects 0.000 claims description 156
- 230000007246 mechanism Effects 0.000 claims description 52
- 238000007667 floating Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000004519 grease Substances 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 241000227287 Elliottia pyroliflora Species 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 230000009347 mechanical transmission Effects 0.000 description 1
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- 230000001681 protective effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to a hydraulic valve structure and discloses a hydraulic valve driver and a hydraulic valve. The hydraulic valve driver can convert external power into valve rod driving force, realizes high-precision control on the valve rod, and responds timely.
Description
Technical Field
The present invention relates to hydraulic valve structures, and in particular, to a hydraulic valve actuator. Furthermore, a hydraulic valve is also disclosed.
Background
As an important control element in the hydraulic system, a hydraulic valve is responsible for implementing the control functions of the entire system. The control mode of the hydraulic valve is from a hydraulic valve which is manually controlled at first and only has an oil path switching function to a hydraulic valve which is controlled in an electro-hydraulic proportional mode, and then to a programmable valve which adopts a digital signal and can perform pressure flow closed-loop control, and the programmable valve plays an increasingly important role in the field of engineering machinery by virtue of the characteristics of high precision and high response.
Various hydraulic valves are often required to be positioned in the hydraulic field and kept at required working positions, so that the working stability of the hydraulic valves is ensured, and system faults are reduced. Generally, the hydraulic valve is positioned after a valve rod is operated, and the hydraulic valve is kept under a certain working condition through the limitation of the position of the valve rod, such as each working position of a reversing valve, so that different functions of the hydraulic valve are realized.
In the prior art, an electric signal is generally converted into a magnetic field force, the pressure and the flow of a pilot liquid flow are controlled through the magnetic field force, and then the pressure and the flow of a hydraulic valve are controlled.
Disclosure of Invention
The invention aims to provide a hydraulic valve driver which can convert external power into driving force of a floating joint, realize high-precision control on the floating joint and respond in time.
The invention aims to solve the technical problem of providing a hydraulic valve which is high in control precision, timely in response and capable of reducing hysteresis of the hydraulic valve.
In order to solve the technical problem, the invention provides, on one hand, a hydraulic valve driver, which includes a gear transmission mechanism connected to a driving mechanism and a power output shaft connected to a floating joint, where the power output shaft is in a rack transmission structure, and the gear transmission mechanism is in transmission connection with the rack transmission structure.
Optionally, the rack transmission structure includes a connecting end connected to the floating joint and a transmission end in transmission connection with the gear transmission mechanism, the connecting end is provided with a mounting hole, and an end of the floating joint is inserted into the mounting hole.
Furthermore, the connecting end of the rack transmission structure penetrates through an end cover of the hydraulic valve to be connected with the floating joint, a rack hole is formed in the end cover of the hydraulic valve, and a guide sleeve for the connecting end of the rack transmission structure to penetrate through is nested in the rack hole.
Specifically, the guide sleeve is a copper sleeve.
Optionally, the gear transmission mechanism comprises a first-stage gear transmission structure, and the first-stage gear transmission structure is in transmission connection with the rack transmission structure.
Specifically, the first stage gear drive structure comprises a first gear and a second gear in driving connection.
Furthermore, the gear transmission mechanism also comprises a second-stage gear transmission structure, and the first-stage gear transmission structure is in transmission connection with the rack transmission structure through the second-stage gear transmission structure.
Specifically, the second-stage gear transmission structure comprises a third gear, a fourth gear, a first gear shaft and a fifth gear, wherein the fourth gear and the fifth gear are respectively and fixedly installed at two ends of the first gear shaft, and the fourth gear is in transmission connection with the second gear through the third gear.
Furthermore, the gear transmission mechanism further comprises a third-stage gear transmission structure, and the second-stage gear transmission structure is in transmission connection with the rack transmission structure through the third-stage gear transmission structure.
Specifically, the third-stage gear transmission structure comprises a sixth gear, a second gear shaft and a seventh gear, the sixth gear and the seventh gear are respectively and fixedly mounted at two ends of the second gear shaft, the sixth gear is meshed with the fifth gear, and the seventh gear is in transmission connection with the rack transmission structure.
Optionally, a position detection device is mounted on the gear transmission mechanism.
Another aspect of the present invention provides a hydraulic valve provided with a hydraulic valve actuator according to any one of the above technical solutions.
Through the technical scheme, the invention has the following beneficial effects:
the invention adopts the transmission fit of the gear transmission mechanism and the rack transmission mechanism, converts external power into direct driving force to the valve rod through the floating joint, can reduce the hysteresis loop of the existing hydraulic valve, improves the precision control to the valve rod, and has more timely response.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is one of the schematic structural views of a hydraulic valve actuator in an embodiment of the present invention;
FIG. 2 is one of the schematic structural views of a gear assembly in an embodiment of the present invention;
FIG. 3 is a second schematic diagram of a gear transmission mechanism according to an embodiment of the present invention;
fig. 4 is a second schematic diagram of the hydraulic valve actuator according to the embodiment of the present invention.
Description of the reference numerals
1 floating joint 2 rack transmission structure
3 guide sleeve 4 first-stage gear transmission structure
41 first gear 42 second gear
5 third gear of second stage gear transmission structure 51
52 fourth gear 53 first gear shaft
54 fifth gear 6 third-stage gear transmission structure
61 sixth gear 62 second gear shaft
63 seventh gear 7 position detecting device
8 electric machine
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be connected through inter-element communication or interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implying any indication of the number of technical features indicated, and therefore the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" may explicitly or implicitly include one or more of the features described.
It is to be understood that, for the purposes of describing the invention and simplifying the description, the directional terminology is used with reference to the device itself; the terms are based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention; also, the directional terms for the hydraulic valve actuator of the present invention should be understood in conjunction with the actual installation state.
As shown in fig. 1 to 4, the invention provides a hydraulic valve driver, which includes a gear transmission mechanism connected to a driving mechanism and a power output shaft connected to a floating joint 1, wherein the power output shaft is a rack transmission structure 2, and the gear transmission mechanism is in transmission connection with the rack transmission structure 2.
Generally, the driving mechanism can be selected as a motor 8, a gear transmission mechanism and a rack transmission structure 2 are arranged between the driving mechanism and the floating joint 1, the floating joint 1 is connected with a valve rod of a hydraulic valve through the transmission of the gear transmission mechanism and the rack transmission structure 2, an electric signal can be converted into direct driving force for the valve rod, a motor direct-drive technology is formed, high-precision control over the valve rod is achieved, and an intelligent hydraulic electric driver is formed. Compared with the prior art which needs to convert an electric signal into a magnetic field force, and control the pressure and the flow of a pilot fluid flow through the magnetic field force so as to control the pressure and the flow of the hydraulic valve, the hydraulic valve adopts a mechanical transmission mode of a gear transmission mechanism and a rack transmission structure 2, so that the problem of hysteresis (hysteresis is an important static characteristic index of the hydraulic valve, reflects the influence degree of factors such as hysteresis, friction and the like existing in the hydraulic valve on the steady-state control characteristic of an element, has good and stable performance, and is relatively small) of the hydraulic valve in the prior art can be effectively reduced, the response is timely, the performance of the hydraulic valve is improved, the processing difficulty of the hydraulic valve is reduced, and the development of engineering mechanical technology is met.
Further, the drive mechanism may preferably be a brushless dc motor, which may be integrated in the hydraulic valve actuator of the present invention.
It should be noted that, in the embodiments, a hydraulic valve is mainly taken as an example, and the hydraulic valve driver of the present invention is applied to the hydraulic valve to drive the hydraulic valve. The hydraulic valve actuator of the present invention is not limited to use with hydraulic valves, but may be used with other types of valves, such as pneumatic valves.
In a specific embodiment of the present invention, referring to fig. 1 and 4, a rack transmission structure 2 has a connection end and a transmission end, the connection end of the rack transmission structure 2 is connected to a floating joint 1, and the connection end of the rack transmission structure 2 is provided with a mounting hole, an end of the floating joint 1 is inserted into the mounting hole, so as to ensure that the floating joint 1 and the mounting hole have a good coaxiality, so that the rack transmission structure 2 and the floating joint 1 form a connection relationship, the transmission end of the rack transmission structure 2 is in transmission connection with a gear transmission mechanism, and under the action of the gear transmission mechanism, the rack transmission structure 2 can be driven to move, so that a valve rod is pushed by the floating joint 1 to move in a valve core cavity in a hydraulic valve, so that the hydraulic valve is kept in a certain working condition, and different functions of the hydraulic valve are realized.
Furthermore, a rack hole is formed in an end cover of the hydraulic valve, a connecting end of the rack transmission structure 2 penetrates through the rack hole in the end cover of the hydraulic valve to be connected with the floating joint 1, a guide sleeve 3 is nested in the rack hole, the connecting end of the rack transmission structure 2 penetrates through the guide sleeve 3, the inner contour of the guide sleeve 3 can be a cylinder body consistent with the outer contour of the connecting end of the rack transmission structure 2, the rack transmission structure 2 can move along the opening direction of the guide sleeve 3, and the outer side face of the guide sleeve 3 can be in interference fit with the rack hole in the end cover of the hydraulic valve.
In a preferred case, the guide sleeve 3 may be a copper sleeve, such as a brass sleeve, and can be conveniently in interference fit with a rack hole on an end cover of the hydraulic valve. Of course, the guide sleeve 3 is not limited to a copper sleeve, and may be other suitable guide structures. Moreover, the guide sleeve 3 is not limited to the cylinder structure, and may be in other structures, for example, the guide sleeve 3 may be formed by combining two bent plates, an inner contour of the bent plate is consistent with an outer contour of the connecting end of the rack transmission structure 2, and an outer side surface of the bent plate abuts against a rack hole on an end cover of the hydraulic valve.
In addition, lubricating grease can be added between the guide sleeve 3 and the rack transmission structure 2, so that the abrasion between the guide sleeve and the rack transmission structure is reduced, and the relative movement is convenient; specifically, an oil injection hole may be formed in the side wall of the guide sleeve 3, and grease may be added between the guide sleeve 3 and the rack gear 2 through the oil injection hole.
As a specific embodiment of the gear transmission mechanism, referring to fig. 1, the gear transmission mechanism includes a first stage gear transmission structure 4, and the first stage gear transmission structure 4 is in transmission connection with the rack transmission structure 2. Specifically, referring to fig. 2 and 3, the first-stage gear transmission structure 4 includes a first gear 41 and a second gear 42, and the first gear 41 and the second gear 42 are engaged with each other to realize power transmission; preferably, the first gear 41 and the second gear 42 may be in a spiral bevel gear structure, the first gear 41 is connected to the motor 8, the motor 8 drives the first gear 41 to rotate, and the first gear 41 drives the second gear 42 to rotate. As a specific embodiment, the second gear 42 may be engaged with the rack transmission structure 2, and the second gear 42 drives the rack transmission structure 2 to move along the guide sleeve 3, so that the floating joint 1 pushes the valve rod to move in the valve core cavity of the hydraulic valve, so that the hydraulic valve is maintained under a certain working condition, and different functions of the hydraulic valve are realized.
Further, the gear transmission mechanism further comprises a second-stage gear transmission structure 5, and the first-stage gear transmission structure 4 is in transmission connection with the rack transmission structure 2 through the second-stage gear transmission structure 5. Specifically, referring to fig. 2 and 3, the second-stage gear transmission structure 5 includes a third gear 51, a fourth gear 52, a first gear shaft 53 and a fifth gear 54, wherein the fourth gear 52 is fixedly mounted at one end of the first gear shaft 53, the fifth gear 54 is fixedly mounted at the other end of the first gear shaft 53, and the fourth gear 52 is in transmission connection with the second gear 42 through the third gear 51. As a specific embodiment, the fifth gear 54 may be engaged with the rack gear 2, the second gear 42 is engaged with the third gear 51, the fourth gear 52 is engaged with the third gear 51, the second gear 42 drives the third gear 51 to rotate, the third gear 51 drives the fourth gear 52 to rotate, the fourth gear 52 drives the fifth gear 54 to rotate, and the fifth gear 54 drives the rack gear 2 to move along the guide sleeve 3, so that the valve rod is pushed by the floating joint 1 to move in the valve core cavity in the hydraulic valve, and the hydraulic valve is maintained under a certain working condition, thereby implementing different functions of the hydraulic valve.
Furthermore, the gear transmission mechanism further comprises a third stage gear transmission structure 6, and the second stage gear transmission structure 5 is in transmission connection with the rack gear transmission structure 2 through the third stage gear transmission structure 6. Specifically, referring to fig. 2 and 3, the third-stage gear transmission structure 6 includes a sixth gear 61, a second gear shaft 62, and a seventh gear 63, the sixth gear 61 is fixedly mounted at one end of the second gear shaft 62, the seventh gear 63 is fixedly mounted at the other end of the second gear shaft 62, the sixth gear 61 is engaged with the fifth gear 54, the seventh gear 63 is in transmission connection with the rack transmission structure 2, and the seventh gear 63 drives the rack transmission structure 2 to move along the guide sleeve 3, so that the valve rod is pushed by the floating joint 1 to move in the spool cavity in the hydraulic valve, and the hydraulic valve is maintained in a certain working condition, thereby implementing different functions of the hydraulic valve.
The third gear 51, the fourth gear 52, the fifth gear 54, the sixth gear 61 and the seventh gear 63 may preferably be of a spur gear structure, the spur gear being of a classic gear type with the toothed portion parallel to the central axis and the toothed concave portion not standing upright (slightly curved). The design of the spur gears can reduce the speed and torque difference when the gears are meshed with each other, and increase the power utilization.
In order to better sense the movement of the rack gear 2 and to accurately control the position of the valve stem, a position detection device 7 may be mounted on the gear for detecting the rotational position of the gear, thereby indirectly determining the movement position of the rack gear 2. In particular. The position detection device 7 can be combined with the third-stage gear transmission structure 6 to indirectly determine the moving position of the rack transmission structure 2 by sensing the rotation condition of the third-stage gear transmission structure 6. Further, the position detection device 7 can be mounted on the sixth gear 61 to sense the gear position control accuracy with high accuracy in a minimum space.
In an optimal case, the position detecting device 7 may be a magnetic ring encoder, and certainly, the position detecting device 7 is not limited to the magnetic ring encoder, and may also be other detecting elements capable of achieving the same function, which are widely used at present, and on the basis of obtaining the technical solution of the present invention, a person skilled in the art can select a specific detecting element according to technical requirements, and details are not described herein.
In order to better understand the technical idea of the present invention, the technical solution of the present invention is described below with reference to relatively full technical features.
As shown in fig. 1 to 4, in a preferred embodiment of the present invention, a hydraulic valve driver, a gear transmission mechanism and a power output shaft, the gear transmission mechanism is connected to the driving mechanism, the driving mechanism may be a dc brushless motor, the power output shaft may be a rack transmission structure 2, the gear transmission mechanism includes a first stage gear transmission structure 4, a second stage gear transmission structure 5 and a third stage gear transmission structure 6, the first stage gear transmission structure 4 includes a first gear 41 and a second gear 42, the first gear 41 and the second gear 42 may be spiral bevel gears, the first gear 41 and the second gear 42 are engaged with each other, the second stage gear transmission structure 5 includes a third gear 51, a fourth gear 52, a first gear shaft 53 and a fifth gear 54, one end of the first gear shaft 53 is fixedly installed with the fourth gear 52, the other end of the first gear shaft 53 is fixedly installed with the fifth gear 54, and the fourth gear 52 is in transmission connection with the second gear 42 through the third gear 51; the third-stage gear transmission structure 6 comprises a sixth gear 61, a second gear shaft 62 and a seventh gear 63, the sixth gear 61 is fixedly mounted at one end of the second gear shaft 62, the seventh gear 63 is fixedly mounted at the other end of the second gear shaft 62, the sixth gear 61 is meshed with the fifth gear 54, the seventh gear 63 is in transmission connection with the rack transmission structure 2, a rack hole is formed in an end cover of the hydraulic valve, the guide sleeve 3 is nested in the rack hole, the connecting end of the rack transmission structure 2 penetrates through the guide sleeve 3 to be connected with the floating joint 1, the guide sleeve 3 can be a brass sleeve, the inner contour of the guide sleeve 3 can be a cylinder body which is consistent with the outer contour of the connecting end of the rack transmission structure 2, the rack transmission structure 2 can move along the opening direction of the guide sleeve 3, and the outer side face of the guide sleeve 3 is in interference fit with the rack hole in the end cover of the hydraulic valve. The seventh gear 63 drives the rack transmission structure 2 to move along the guide sleeve 3, so that the valve rod is pushed to move in the valve core cavity of the hydraulic valve through the floating connector 1, the hydraulic valve is kept under a certain working condition, and different functions of the hydraulic valve are realized. The sixth gear 61 is provided with a position detecting device 7, and the position detecting device 7 may be a magnetic ring encoder, and senses the gear position control accuracy in a minimum space with high accuracy.
In the technical scheme of the invention, the gear transmission mechanism adopts a three-stage gear transmission structure and is a gear transmission pair, the first-stage gear structure adopts a spiral bevel gear structure, the second-stage gear transmission and the third-stage gear transmission adopt a spur gear structure, the rack transmission structure 2 is a gear and rack transmission pair, the power output shaft adopts a gear and rack transmission structure, and the driving mechanism adopts a direct-current brushless motor to provide power, so that the position control, the speed control and the current control of the motor are realized. The direct current brushless motor is as the power supply, and through first order spiral bevel gear structure and second grade positive gear structure, third level positive gear structure with power transmission for the rack and pinion transmission is vice, and the rethread rack is connected with floating joint 1 to the displacement of control valve rod, and then the required flow of accurate control valve body.
By adopting the motor direct-drive technology, the power of the motor is converted into the driving force of the valve rod through the gear transmission pair and the gear rack transmission pair, so that the high-precision control of the valve rod is realized. The introduction of the electric direct drive technology can also improve the performance of the hydraulic valve, reduce the hysteresis loop of the hydraulic valve and reduce the processing difficulty of the hydraulic valve.
The gear transmission mechanism adopts a three-level gear transmission structure, adopts high-precision gear engagement, controls the transmission precision within a design range, and has a compact structure and high transmission efficiency. The magnetic ring type encoder is adopted, the control precision of the sensing position is higher, the magnetic ring type encoder is combined with the third-stage gear transmission structure 6, and the control precision of the gear position is sensed in the minimum space with high precision; the copper bush is embedded in the rack hole of the valve body, so that the output linearity of the rack transmission structure 2 is controllable, lubricating grease is injected into the copper bush, the radial deviation of the rack transmission structure 2 in reciprocating motion is controlled in a motion range, extra friction resistance is not increased in the operation process of the rack transmission structure 2, the last stage of transmission adopts a gear-rack meshing structure, and the rack transmission structure can be easily taken out during disassembly and assembly, so that the maintenance is facilitated. On the whole, the structure is compacter, and the casing adopts the finishing impression technology, and product stability is higher.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention can be made, and the same should be considered as the disclosure of the present invention as long as the idea of the present invention is not violated.
Claims (12)
1. The hydraulic valve driver is characterized by comprising a gear transmission mechanism connected with a driving mechanism and a power output shaft connected with a floating joint (1), wherein the power output shaft is of a rack transmission structure (2), and the gear transmission mechanism is in transmission connection with the rack transmission structure (2).
2. The hydraulic valve drive as claimed in claim 1, characterized in that said rack gear (2) comprises a connecting end in transmission connection with said floating joint (1) and a driving end in transmission connection with said gear, said connecting end being provided with a mounting hole in which an end of said floating joint (1) is inserted.
3. The hydraulic valve driver according to claim 2, characterized in that the connecting end of the rack transmission structure (2) passes through the end cover of the hydraulic valve to be connected with the floating joint (1), the end cover of the hydraulic valve is provided with a rack hole, and the rack hole is nested with a guide sleeve (3) for the connecting end of the rack transmission structure (2) to pass through.
4. The hydraulic valve actuator according to claim 3, characterized in that the guide sleeve (3) is a copper sleeve.
5. The hydraulic valve drive according to one of claims 1 to 4, characterized in that the gear mechanism comprises a first stage gear mechanism (4), the first stage gear mechanism (4) being in driving connection with the rack gear mechanism (2).
6. The hydraulic valve drive according to claim 5, characterized in that the first stage gearing (4) comprises a first gear wheel (41) and a second gear wheel (42) in driving connection.
7. The hydraulic valve drive according to claim 6, characterized in that the gear mechanism further comprises a second stage gear mechanism (5), the first stage gear mechanism (4) being in driving connection with the rack gear mechanism (2) via the second stage gear mechanism (5).
8. The hydraulic valve drive according to claim 7, characterized in that the second stage gear transmission structure (5) comprises a third gear (51), a fourth gear (52), a first gear shaft (53) and a fifth gear (54), the fourth gear (52) and the fifth gear (54) are respectively fixedly mounted at two ends of the first gear shaft (53), and the fourth gear (52) is in transmission connection with the second gear (42) through the third gear (51).
9. The hydraulic valve drive according to claim 8, characterized in that the gear mechanism further comprises a third stage gear mechanism (6), the second stage gear mechanism (5) being in driving connection with the rack gear mechanism (2) via the third stage gear mechanism (6).
10. The hydraulic valve drive according to claim 9, characterized in that the third stage gear transmission structure (6) comprises a sixth gear (61), a second gear shaft (62) and a seventh gear (63), the sixth gear (61) and the seventh gear (63) are respectively fixedly mounted at two ends of the second gear shaft (62), the sixth gear (61) is engaged with the fifth gear (54), and the seventh gear (63) is in transmission connection with the rack transmission structure (2).
11. The hydraulic valve actuator according to any one of claims 1 to 4, characterised in that a position detection device (7) is mounted on the gear mechanism.
12. A hydraulic valve, characterized in that a hydraulic valve actuator according to any one of claims 1 to 11 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211319740.2A CN115596879A (en) | 2022-10-26 | 2022-10-26 | Hydraulic valve driver and hydraulic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211319740.2A CN115596879A (en) | 2022-10-26 | 2022-10-26 | Hydraulic valve driver and hydraulic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115596879A true CN115596879A (en) | 2023-01-13 |
Family
ID=84850578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211319740.2A Pending CN115596879A (en) | 2022-10-26 | 2022-10-26 | Hydraulic valve driver and hydraulic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115596879A (en) |
-
2022
- 2022-10-26 CN CN202211319740.2A patent/CN115596879A/en active Pending
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