CN113324088B - Hydraulic control clutch manual control structure of hydraulic valve - Google Patents
Hydraulic control clutch manual control structure of hydraulic valve Download PDFInfo
- Publication number
- CN113324088B CN113324088B CN202110665138.3A CN202110665138A CN113324088B CN 113324088 B CN113324088 B CN 113324088B CN 202110665138 A CN202110665138 A CN 202110665138A CN 113324088 B CN113324088 B CN 113324088B
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- Prior art keywords
- hydraulic
- rack
- connecting rod
- valve
- transmission connecting
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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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a hydraulic control clutch manual control structure of a hydraulic valve, and belongs to the technical field of hydraulic valves. One end of the valve body is provided with a hydraulic cavity for controlling the valve rod; the hydraulic cavity is internally provided with a transmission connecting rod and a rack; the inner end of the transmission connecting rod is connected with the valve rod; the rack is provided with an axial through hole, the middle part of the transmission connecting rod is arranged in the through hole of the rack in a penetrating way, and the transmission connecting rod is in clearance fit with the through hole of the rack; the rack is meshed with the gear, and the handle is fixedly connected with the gear; the back side surface of the rack is provided with a hydraulic control joint which is used for pushing the rack to be attached to the transmission connecting rod. The control mode can be freely switched by the hydraulic control clutch handle, and the handle can be prevented from swinging when a hydraulic control/electric control mode is used, so that the personal safety is protected, and the service life of parts is prolonged; the hydraulic control clutch handle is novel in structure, simple to process, simple to assemble, obvious in improvement effect and high in practicability aiming at practical problems.
Description
Technical Field
The invention relates to the technical field of hydraulic valves, in particular to a hydraulic control clutch manual control structure of a hydraulic valve.
Background
Manual control is one of the primary modes of control for hydraulic valves and is often used in conjunction with other modes of control, such as pilot or electric. Normally, hydraulic or electric control is used, but in case of emergency or in case of need of precise control intervention by personnel. For rigid connection between common hydrovalve manual control mechanical structure and the valve rod, when carrying out liquid accuse or automatically controlled, the motion of valve rod can drive the handle and move together, because the switching-over speed and the frequency of valve rod are very fast sometimes, when the handle bar is longer, the rapid swing handle bar can lead to the fact the threat to personal safety, in addition, also can lead to the fact the impact to the connecting axle that commutates, influences its life.
Chinese patent discloses an operating device (CN 112112112855A) of a double-valve-core multi-way reversing valve with independently controlled load ports, and provides the operating device of the double-valve-core multi-way reversing valve with independently controlled load ports, which can realize the coupling linkage of the two ports when the manual operation is carried out in power failure, and further ensure the safe operation of a system. Under the condition of system power failure, the driving rotating shaft moves in the X direction, two ends of the driving lever move to be combined with notches at the tops of the two valve cores, and the handle rotates to drive the two valve cores to synchronously lift.
In addition, the invention also provides two embodiments for positioning the X-direction position of the rotating shaft aiming at the separation state, so that the manual mechanism can not be combined due to system vibration in the normal working state. In the first embodiment, the handle lever is normally connected to the rotating shaft; the elastic buckle realizes the separation state of the deflector rod and the notch. In the second embodiment, the handle rod is inserted into the rotating shaft when operation is needed; the spring realizes the separation state of the deflector rod and the notch.
The prior art has the following defects:
1. the handle body accommodating groove elastic buckle structure is relatively simple in structure. However, after the handle is pulled out and pushed back for multiple times, the elastic buckle is easy to wear, the service life of the elastic buckle is short, the separated positioning is difficult to realize, and the reliability is low;
2. the elastic clutch mechanism has limitations, the handle rod needs to be taken out in a normal working state, the rotating shaft needs to be pressed to overcome spring force in a manual operation state, the rotating shaft is exposed out of the spring cover, and then the handle rod is inserted on the rotating shaft, so that the practicability is not strong, and the operation is complicated;
3. the spring in the elastic clutch mechanism is easy to fatigue when being in a compressed state for a long time, the clutch mechanism can be combined possibly due to system vibration in a normal working state, the reliability is low, and potential safety hazards exist.
Disclosure of Invention
In order to solve the technical problem, the invention provides a hydraulic control clutch manual control structure of a hydraulic valve.
The invention is realized by the following technical scheme: a hydraulic control clutch manual control structure of a hydraulic valve comprises a valve body and a valve rod arranged in a valve core hole of the valve body, wherein one end of the valve body is provided with a hydraulic cavity for controlling the valve rod; the hydraulic cavity is internally provided with a transmission connecting rod and a rack; the inner end of the transmission connecting rod is connected with the valve rod; the rack is provided with an axial through hole, the middle part of the transmission connecting rod is arranged in the through hole of the rack in a penetrating way, and the transmission connecting rod is in clearance fit with the through hole of the rack; the rack is meshed with the gear, and the handle is fixedly connected with the gear; the back side surface of the rack is provided with a hydraulic control joint which is used for pushing the rack to be attached to the transmission connecting rod.
It further comprises the following steps: the left end of the valve body is connected with a manual end cover, and the hydraulic cavity is formed in the manual end cover; and the two side surfaces of the rack are in sliding connection with the hydraulic cavity in an arc-shaped surface matching manner.
The outer end of the manual end cover is provided with a limit screw, and the limit screw is opposite to the outer end of the transmission connecting rod; the inner end of the transmission connecting rod is connected with the valve rod through threads.
One side of the manual end cover is provided with a threaded mounting hole communicated with the hydraulic cavity, and the hydraulic control joint is mounted in the threaded mounting hole of the manual end cover through threaded connection; the inner end of the hydraulic control joint is provided with a counter bore, a steel ball is arranged in the counter bore, and the steel ball abuts against the back side face of the rack.
And the axis connecting line from the steel ball to the gear is vertical to the rack.
The back side surface of the rack is provided with an axial arc-shaped groove, and the top of the steel ball is positioned in the arc-shaped groove of the rack.
The right end of the valve body is connected with a spring end cover, and a spring cavity used for controlling the valve rod is formed in the spring end cover.
And a return spring assembly connected with the right end of the valve rod is arranged in a spring cavity of the spring end cover.
And the valve body is provided with a hydraulic control oil port block which respectively controls and communicates the spring cavity and the hydraulic cavity.
Compared with the prior art, the invention has the beneficial effects that: in the use process of the hydraulic control/electric control + manual control hydraulic valve, the control mode can be freely switched through the hydraulic control clutch handle, and the handle can be prevented from swinging when the hydraulic control/electric control mode is used, so that the personal safety is protected, and the service life of parts is prolonged; the hydraulic control clutch handle is novel in structure, simple to process and assemble, obvious in improvement effect and high in practicability aiming at practical problems.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a view taken along line B-B of FIG. 1;
FIG. 3 is a schematic perspective view of the present invention;
in the figure: 1. a manual end cap; 2. a gear; 3. a handle; 4. a limit screw; 5. a transmission connecting rod; 6. a rack; 7. a steel ball; 8. a hydraulic control joint; 9. a valve body; 10. a valve stem; 11. a spring end cap; 12. a return spring assembly; 13. and (4) controlling the oil port block by liquid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 3, in a hydraulic control clutch manual control structure of a hydraulic valve, a valve body 9 is provided with a valve core mounting hole, and a valve rod 10 is mounted in the valve core mounting hole of the valve body 9. Two ends of the valve core mounting hole are respectively connected with the manual end cover 1 and the spring end cover 11. A hydraulic cavity for controlling the valve rod 10 is opened in the manual end cover 1, and a spring cavity for controlling the valve rod 10 is opened in the spring end cover 11. And a return spring assembly 12 is arranged in a spring cavity of the spring end cover 11, and the return spring assembly 12 is connected with the right end of the valve rod 10 and used for controlling the valve rod 10 to reset. The hydraulic control oil port block 13 is fixedly installed on the valve body 9, and the hydraulic control oil port block 13 and the valve body 9 are provided with oil ducts for respectively controlling and communicating the spring cavity and the hydraulic cavity.
The inner end of the transmission connecting rod 5 is connected with the valve rod 10 through threads, the transmission connecting rod 5 and the hydraulic cavity are axially installed in a sliding mode, and the two side faces of the rack 6 are in sliding connection with the hydraulic cavity in an arc face matched mode. And a limiting screw 4 is arranged at the outer end of the manual end cover 1, and the limiting screw 4 is opposite to the outer end of the transmission connecting rod 5.
An axial through hole is formed in the rack 6, the middle of the transmission connecting rod 5 is arranged in the through hole of the rack 6 in a penetrating mode, and the transmission connecting rod 5 is in clearance fit with the through hole of the rack 6; straight teeth on the upper side face of the rack 6 are meshed with the gear 2, the gear 2 is rotatably installed with the manual end cover 1, and the handle 3 is fixedly connected with the gear 2. The hydraulic control joint 8 is arranged on the back side surface of the rack 6, and the hydraulic control joint 8 is used for pushing the rack 6 to be attached to the transmission connecting rod 5.
Referring to fig. 2, a threaded mounting hole is formed in the lower side of the manual end cover 1, and the threaded mounting hole is communicated with the hydraulic cavity. The control joint 8 is installed in a threaded installation hole of the manual end cover 1 through threaded connection, a counter bore is formed in the inner end of the hydraulic control joint 8, and the outer end of the hydraulic control joint 8 controls an oil duct to be communicated into the counter bore. A steel ball 7 is arranged in the counter bore, and the axis connecting line from the steel ball 7 to the gear 2 is vertical to the rack 6. The back side surface of the rack 6 is provided with an axial arc-shaped groove, and the steel ball 7 is propped against the back side surface of the rack 6, so that the steel ball 7 is always in close and stable contact with the rack 6, and the rack 6 can move more stably.
The working principle is as follows:
when the hydraulic control joint is not communicated with pressure oil, pilot oil is respectively communicated into the cavities at the two ends of the valve rod 10 through the hydraulic control oil port block 13 to push the valve rod 10 to change direction, the transmission connecting rod 5 can move along with the change direction of the valve rod, and the rack 6 cannot move because the transmission connecting rod 5 and the rack 6 do not have acting force, so that the gear 2 and the handle 3 cannot be driven to move;
when manual control functions using handle control are required:
pressure oil is introduced into the hydraulic control joint 8, the steel ball 7 tightly pushes the rack 6 upwards under the pushing action of the pressure oil, so that the rack 6, the transmission connecting rod 5 and the gear 2 are pressed together, when the handle 3 is pushed, the gear 2 can also rotate and drives the rack 6 to move left and right through the meshing of the gears, and the transmission connecting rod 5 and the valve rod 10 are driven to perform reversing motion together due to the friction force between the inner wall of the rack 6 and the transmission connecting rod 5.
In the embodiment, manual control adopts gear and rack transmission, the rack is of a hollow structure, the reversing push rod connected with the valve rod penetrates through the center of the rack, and pressure oil is introduced to control the ball to tightly push or loosen the action of the bottom of the rack, so that the clutch between the rack and the reversing push rod is realized. Because the transmission rack is separated from the transmission connecting rod, when the hydraulic control or electric control is used, the movement of the valve rod cannot drive the transmission shaft to move, so that the danger and the damage of a manual control structure are prevented. When manual operation is needed, the transmission rack and the transmission connecting rod are pressed by hydraulic pressure, and the transmission connecting rod is driven to move together by friction force.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A hydraulic control clutch manual control structure of a hydraulic valve comprises a valve body (9) and a valve rod (10) installed in a valve core hole of the valve body (9), wherein one end of the valve body (9) is provided with a hydraulic cavity for controlling the valve rod (10);
the method is characterized in that:
the hydraulic cavity is internally provided with a transmission connecting rod (5) and a rack (6); the inner end of the transmission connecting rod (5) is connected with the valve rod (10); an axial through hole is formed in the rack (6), the middle of the transmission connecting rod (5) penetrates through the through hole of the rack (6), and the transmission connecting rod (5) is in clearance fit with the through hole of the rack (6);
the rack (6) is meshed with the gear (2), and the handle (3) is fixedly connected with the gear (2); the back side surface of the rack (6) is provided with a hydraulic control joint (8), and the hydraulic control joint (8) is used for pushing the rack (6) to be attached to the transmission connecting rod (5);
the inner end of the hydraulic control joint (8) is provided with a counter bore, a steel ball (7) is mounted in the counter bore, and the steel ball (7) abuts against the back side face of the rack (6);
when the hydraulic control joint is not communicated with pressure oil, the rack (6) cannot move because the transmission connecting rod (5) and the rack (6) do not have acting force, so that the gear (2) and the handle (3) cannot be driven to move;
when manual control functions using handle control are required:
pressure oil is led into a hydraulic control joint (8), a steel ball (7) is pushed by the pressure oil to tightly push a rack (6) upwards, so that the rack (6) is pressed together with a transmission connecting rod (5) and a gear (2), when a handle (3) is pushed, the gear (2) can also rotate and drives the rack (6) to move left and right through meshing of the gear, and because friction force exists between the inner wall of the rack (6) and the transmission connecting rod (5), the transmission connecting rod (5) and a valve rod (10) are driven to perform reversing motion together.
2. The hydraulic-control clutch manual control structure of the hydraulic valve according to claim 1, characterized in that: the left end of the valve body (9) is connected with a manual end cover (1), and the hydraulic cavity is formed in the manual end cover (1); and two side surfaces of the rack (6) are in arc-shaped surface matching sliding connection with the hydraulic cavity.
3. The hydraulic-control clutch manual control structure of the hydraulic valve according to claim 2, characterized in that: the outer end of the manual end cover (1) is provided with a limit screw (4), and the limit screw (4) is opposite to the outer end of the transmission connecting rod (5); the inner end of the transmission connecting rod (5) is connected with the valve rod (10) through threads.
4. The hydraulic control clutch manual control structure of the hydraulic valve according to claim 2, characterized in that: a threaded mounting hole communicated with the hydraulic cavity is formed in one side of the manual end cover (1), and the hydraulic control joint (8) is installed in the threaded mounting hole of the manual end cover (1) through threaded connection.
5. The hydraulic-control clutch manual control structure of the hydraulic valve according to claim 4, characterized in that: and the axis connecting line from the steel ball (7) to the gear (2) is vertical to the rack (6).
6. The hydraulic-control clutch manual control structure of the hydraulic valve according to claim 4, characterized in that: the back side surface of the rack (6) is provided with an axial arc-shaped groove, and the top of the steel ball (7) is positioned in the arc-shaped groove of the rack (6).
7. The hydraulic-control clutch manual control structure of the hydraulic valve according to claim 2, characterized in that: the right end of the valve body (9) is connected with a spring end cover (11), and a spring cavity used for controlling the valve rod (10) is formed in the spring end cover (11).
8. The hydraulic-control clutch manual control structure of the hydraulic valve according to claim 7, characterized in that: and a return spring assembly (12) connected with the right end of the valve rod (10) is arranged in a spring cavity of the spring end cover (11).
9. The hydraulic-control clutch manual control structure of the hydraulic valve according to claim 7, characterized in that: and a hydraulic control oil port block (13) which respectively controls and communicates the spring cavity and the hydraulic cavity is arranged on the valve body (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110665138.3A CN113324088B (en) | 2021-06-16 | 2021-06-16 | Hydraulic control clutch manual control structure of hydraulic valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110665138.3A CN113324088B (en) | 2021-06-16 | 2021-06-16 | Hydraulic control clutch manual control structure of hydraulic valve |
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| CN113324088A CN113324088A (en) | 2021-08-31 |
| CN113324088B true CN113324088B (en) | 2022-12-13 |
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| CN202110665138.3A Active CN113324088B (en) | 2021-06-16 | 2021-06-16 | Hydraulic control clutch manual control structure of hydraulic valve |
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| CN113324088A (en) | 2021-08-31 |
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