CN111963587B - Pneumatic control system and method of clutch - Google Patents
Pneumatic control system and method of clutch Download PDFInfo
- Publication number
- CN111963587B CN111963587B CN202010915484.8A CN202010915484A CN111963587B CN 111963587 B CN111963587 B CN 111963587B CN 202010915484 A CN202010915484 A CN 202010915484A CN 111963587 B CN111963587 B CN 111963587B
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- clutch
- pressure
- electromagnetic valve
- way
- valve
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/066—Control of fluid pressure, e.g. using an accumulator
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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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
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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
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/08—Regulating clutch take-up on starting
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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
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/10—Preventing unintentional or unsafe engagement
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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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10443—Clutch type
- F16D2500/10481—Automatic clutch, e.g. centrifugal masses
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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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/52—General
- F16D2500/525—Improve response of control system
Abstract
The invention discloses a pneumatic control system and method of a clutch, and relates to the technical field of control systems. The invention comprises a clutch three-way electromagnetic valve; the inlet of the clutch three-way electromagnetic valve is connected with a three-way shuttle valve, and the outlet is connected with a clutch; one side of the three-way shuttle valve is connected with a high-pressure three-way electromagnetic valve, and the other side of the three-way shuttle valve is connected with a low-pressure reducing valve with a low-pressure gauge; the low-pressure reducing valve is connected with the high-pressure three-way electromagnetic valve through a three-way pipe; the other side of the three-way pipe is connected with a high-pressure reducing valve with a high-pressure gauge. The invention realizes the free switching of the high and low torque settings of the safety clutch by connecting the air supply pipelines with different air pressures in parallel; the normal starting of the equipment is ensured, and meanwhile, the safety clutch can play an effective overload protection function.
Description
Technical Field
The invention belongs to the technical field of control systems, and particularly relates to a pneumatic control system of a clutch and a method of the pneumatic control system of the clutch.
Background
The safety clutch is used as a common torque limiting device in mechanical transmission, and when the transmission torque exceeds a set value, the driving part and the driven part of the clutch are disengaged or mutually slip, so that the function of overload protection is achieved. As shown in FIG. 1, when the mechanical equipment needs to additionally increase the starting torque due to inertia during starting acceleration, the starting moment torque is very large and even reaches 2-3 times of the normal running torque. The conventional safety clutch usually only can set a fixed overload disengagement torque value, and when the disengagement torque is set according to a normal operation torque value, equipment can be started to accelerate; when the disengagement torque is set by the starting torque, the device may not be disengaged after a severe overload, and the safety clutch does not function as an overload protection.
Disclosure of Invention
The invention aims to provide a pneumatic control system and a method of a clutch, wherein the control system realizes the free switching of high and low torque settings of a safety clutch by connecting air supply pipelines with different air pressures in parallel; the normal starting of the equipment is ensured, and meanwhile, the safety clutch can play an effective overload protection function.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a pneumatic control system of a clutch, which comprises a clutch three-way electromagnetic valve; the inlet of the clutch three-way electromagnetic valve is connected with a three-way shuttle valve, and the outlet is connected with a clutch; one side of the three-way shuttle valve is connected with a high-pressure three-way electromagnetic valve, and the other side of the three-way shuttle valve is connected with a low-pressure reducing valve with a low-pressure gauge; the low-pressure reducing valve is connected with the high-pressure three-way electromagnetic valve through a three-way pipe; the other side of the three-way pipe is connected with a high-pressure reducing valve with a high-pressure gauge; reducing the pressure of gas entering a pipeline to a certain required outlet pressure by adopting a low-pressure reducing valve, and feeding back the pressure on the low-pressure pipeline by using a low-pressure gauge; the method comprises the following steps that a high-pressure reducing valve is adopted to increase the pressure of gas entering a pipeline to a certain required outlet pressure, a high-pressure gauge is used for feeding back the pressure of the gas on the high-pressure pipeline, and the realization of related functions is realized through a module in a clutch; so as to more conveniently control the pressure of the pneumatic control system and realize the rapid control of the engaging position and the speed of the clutch.
Furthermore, the clutch is provided with a return spring, a transmission piece, a steel ball, a detection switch and a driven flange;
further, the transmission piece is in contact connection with the steel ball.
A method of a pneumatic control system for a clutch, comprising the steps of:
the apparatus can be divided into four processes: before starting, during running and disconnecting.
The method comprises the following steps: before starting up the equipment
The high-pressure three-way electromagnetic valve is closed, the clutch three-way electromagnetic valve is switched on, low-pressure gas is introduced into the clutch, and the driving part in the clutch slowly rotates to enable the clutch to be combined.
Step two: device start-up
The high-pressure three-way electromagnetic valve is connected, the clutch three-way electromagnetic valve is connected, high-pressure gas is introduced into the clutch, the clutch disengaging torque is set to be high torque, and the phenomenon that the driven flange does not slide when being started in an accelerating mode is guaranteed.
Step three: operation of the plant
The high-pressure three-way electromagnetic valve is closed, the clutch three-way electromagnetic valve is switched on, low-pressure gas is introduced into the clutch, the clutch disengaging torque is set to be low torque, and the effective overload protection function of the driven flange is guaranteed.
Step four: the driving and driven parts of the apparatus being disengaged
The clutch three-way electromagnetic valve is closed, and compressed air in the clutch is discharged through a return spring arranged on the clutch, so that the disengaging effect of the clutch is achieved.
The invention has the following beneficial effects:
1. the invention takes the steel ball type pneumatic clutch as a main body, and forms a structure of a compression type gas spring in the clutch by taking compressed gas as power, thereby generating the function similar to that of the common embedded type safety clutch.
2. The pneumatic control system is connected with the air supply pipelines with different air pressures in parallel, so that the free switching of high and low torque settings of the safety clutch is realized, the normal starting of equipment is ensured, and meanwhile, the safety clutch can play an effective overload protection function.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a pneumatic control system for a clutch according to the present invention;
FIG. 2 is a plan view of the pneumatic control system;
FIG. 3 is a control flow diagram of the pneumatic control system;
FIG. 4 is a state diagram of the system at start-up of the pneumatic control system;
FIG. 5 is a state diagram of the system with the pneumatic control system in operation;
FIG. 6 is a state diagram of the system with the clutch disengaged in the pneumatic control system;
in the drawings, the components represented by the respective reference numerals are listed below:
1-control system, 2-clutch, 101-high pressure three-way solenoid valve, 102-clutch three-way solenoid valve, 103-three-way shuttle valve, 104-high pressure reducing valve, 105-low pressure reducing valve, 201-return spring, 202-transmission piece, 203-steel ball, 204-detection switch, 205-driven flange.
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 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 invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "disengaged", "engaged", "inner", "around", and the like, indicate an orientation or positional relationship, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.
Referring to fig. 1-2, a low pressure reducing valve is used to reduce the pressure of the gas entering the pipeline to a desired outlet pressure, and a low pressure gauge is used to feed back the pressure on the low pressure pipeline; in addition, the pressure of gas entering a pipeline is increased to a certain required outlet pressure by adopting a high-pressure reducing valve, a high-pressure gauge is used for feeding back the gas pressure on the high-pressure pipeline, and the realization of related functions is realized by a related module in the clutch; so as to more conveniently control the pressure of the pneumatic control system and realize the rapid control of the engaging position and the speed of the clutch.
The invention relates to a pneumatic control system of a clutch and a method thereof, wherein the pneumatic control system comprises a clutch three-way electromagnetic valve 102; the inlet of the clutch three-way electromagnetic valve 102 is connected with a three-way shuttle valve 103, and the outlet is connected with a clutch 2; one side of the three-way shuttle valve 103 is connected with a high-pressure three-way electromagnetic valve 101, and the other side is connected with a low-pressure reducing valve 105 with a low-pressure gauge; the low-pressure reducing valve 105 is connected with the high-pressure three-way electromagnetic valve 101 through a three-way pipe; the other side of the three-way pipe is connected with a high-pressure reducing valve 104 with a high-pressure gauge; reducing the pressure of gas entering the pipeline to a certain required outlet pressure by using a low-pressure reducing valve 105, and feeding back the pressure on the low-pressure pipeline by using a low-pressure gauge; the pressure of gas entering a pipeline is increased to a certain required outlet pressure by adopting a high-pressure reducing valve 104, a high-pressure gauge is used for feeding back the gas pressure on the high-pressure pipeline, and the realization of related functions is realized by a module in a clutch; so as to more conveniently control the pressure of the pneumatic control system and realize the rapid control of the engaging position and the speed of the clutch.
The clutch 2 is provided with a return spring 202, a transmission member 202, a steel ball 203, a detection switch 204 and a driven flange 205, wherein the transmission member 202 is in contact connection with the steel ball 203.
The pneumatic control system is a parallel closed-loop system, and the invention takes a steel ball type, end face jaw type or pin type pneumatic clutch as a main body, and forms a structure of a compression type gas spring in the clutch 2 by taking compressed gas as power, thereby generating the function similar to that of a common embedded type safety clutch. In addition, the control system is connected with air supply pipelines with different air pressures in parallel, and a safety clutch is arranged by high-pressure air when the equipment is started, so that the normal starting of the equipment is ensured; when the clutch is started and normally runs, the pneumatic clutch is arranged by low-pressure gas, so that the clutch 2 can play an effective overload protection function. The specific operating principle will now be described with reference to fig. 2 and 3 and the actual clutch engagement law process.
The engagement law of the clutch 2 is generally divided into two states of engagement and disengagement, and with reference to fig. 3, the device can be divided into four processes: before starting, running and disconnecting.
The method comprises the following steps: before starting up the equipment
Before the equipment starts, the high-pressure three-way electromagnetic valve 101 is closed, the clutch three-way electromagnetic valve 102 is switched on, compressed air is reduced to low pressure through the low-pressure reducing valve 105, the low-pressure gauge is used for detecting, the low-pressure air is introduced into the clutch 2, and the driving part in the clutch 2 slowly rotates to enable the clutch to be combined.
Step two: device start-up
Referring to fig. 4, when the equipment is started, the high-pressure three-way electromagnetic valve 101 is connected, the clutch three-way electromagnetic valve 102 is connected, compressed air is increased to high pressure through the high-pressure reducing valve 104, a high-pressure gauge is used for detecting, the high-pressure air is introduced into the clutch 2, the disengagement torque of the clutch 2 is set to be high torque, and the driven flange 205 is guaranteed not to slip during accelerated starting.
Step three: operation of the plant
Referring to fig. 5, when the device is in operation, the high-pressure three-way solenoid valve 101 is closed, the clutch three-way solenoid valve 102 is switched on, compressed air is reduced to low pressure through the low-pressure reducing valve 105, a low-pressure gauge is used for detecting, low-pressure air is introduced into the clutch 2, the disengagement torque of the clutch 2 is set to be low torque, and the effective overload protection function of the driven flange 205 is ensured.
Step four: the driving and driven parts of the apparatus being disengaged
Referring to fig. 6, when the driving and driven parts of the device are disengaged, the three-way clutch solenoid valve 102 is closed, and the return spring 205 arranged on the clutch 2 removes the compressed air inside the clutch 2, so as to achieve the disengagement effect of the clutch 2.
In addition, when the equipment is overloaded in the running process, the transmission piece 202 is separated from the steel ball 203, the signal of the detection switch 204 is lost, the clutch three-way electromagnetic valve 102 is closed, and the clutch 2 is separated, so that the slipping and abrasion of the clutch 2 after the overload is prevented.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
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 (1)
1. A method of a pneumatic control system of a clutch, wherein the pneumatic control system of the clutch comprises a clutch three-way solenoid valve (102); the inlet of the clutch three-way electromagnetic valve (102) is connected with a three-way shuttle valve (103), and the outlet is connected with a clutch (2); one side of the three-way shuttle valve (103) is connected with a high-pressure three-way electromagnetic valve (101), and the other side of the three-way shuttle valve (103) is connected with a low-pressure reducing valve (105) with a low-pressure gauge; the low-pressure reducing valve (105) is connected with the high-pressure three-way electromagnetic valve (101) through a three-way pipe; the other side of the three-way pipe is connected with a high-pressure reducing valve (104) with a high-pressure gauge;
the clutch (2) is provided with a return spring (201), a transmission piece (202), a steel ball (203), a detection switch (204) and a driven flange (205);
the transmission piece (202) is in contact connection with the steel ball (203);
the method is characterized by comprising the following steps:
the apparatus can be divided into four processes: before starting, during running and disconnecting;
the method comprises the following steps: before starting up the equipment
The high-pressure three-way electromagnetic valve (101) is closed, the clutch three-way electromagnetic valve (102) is switched on, low-pressure gas is introduced into the clutch (2), and the driving part in the clutch (2) slowly rotates to enable the clutch to be combined;
step two: device start-up
The high-pressure three-way electromagnetic valve (101) is connected, the clutch three-way electromagnetic valve (102) is connected, high-pressure gas is introduced into the clutch (2), the disengagement torque of the clutch (2) is set to be high torque, and the driven flange (205) is guaranteed not to slip when being accelerated and started;
step three: operation of the plant
The high-pressure three-way electromagnetic valve (101) is closed, the clutch three-way electromagnetic valve (102) is switched on, low-pressure gas is introduced into the clutch (2), the disengagement torque of the clutch (2) is set to be low torque, and the effective overload protection function of the driven flange (205) is ensured;
step four: disconnecting the driving part and the driven part of the equipment:
the clutch three-way electromagnetic valve (102) is closed, and compressed air in the clutch (2) is discharged through a return spring (201) arranged on the clutch (2), so that the disengagement effect of the clutch (2) is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010915484.8A CN111963587B (en) | 2020-09-03 | 2020-09-03 | Pneumatic control system and method of clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010915484.8A CN111963587B (en) | 2020-09-03 | 2020-09-03 | Pneumatic control system and method of clutch |
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| Publication Number | Publication Date |
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| CN111963587A CN111963587A (en) | 2020-11-20 |
| CN111963587B true CN111963587B (en) | 2021-12-07 |
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| CN202010915484.8A Active CN111963587B (en) | 2020-09-03 | 2020-09-03 | Pneumatic control system and method of clutch |
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| CN111963587A (en) | 2020-11-20 |
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