CN110529516B

CN110529516B - Automatic clutch device capable of achieving cylinder cutting and operation method thereof

Info

Publication number: CN110529516B
Application number: CN201910784620.1A
Authority: CN
Inventors: 谢永慧; 姜伟; 张荻; 朱光亚
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-07-28
Anticipated expiration: 2039-08-23
Also published as: CN110529516A

Abstract

The invention discloses an automatic clutch device capable of realizing cylinder cutting and an operation method thereof, wherein the automatic clutch device comprises: a driving shaft, a driven shaft and a driven wheel disc; a first blind hole is formed in the circumferential surface of the first wheel disc of the driving shaft along the radial direction, and a flyweight is movably arranged in the first blind hole; a pawl is hinged on the circumferential surface of the first wheel disc, and two ends of the pawl are respectively and fixedly provided with a first magnet; two second magnets are arranged on the circumferential surface of the first wheel disc; a second wheel disc is machined at one end of the driven shaft; an installation cavity is machined in the end face of the second wheel disc; the circumferential surface of the second wheel disc is fixedly provided with an arc-shaped piston cylinder, the piston is connected with the head end of an arc-shaped piston rod, and the tail end of the piston rod is fixedly provided with a hook; the driven wheel disc is arranged in the mounting cavity of the second wheel disc, and forms a closed air chamber with the driven shaft; the closed air chamber is communicated with the piston cylinder. The invention can change the combination state according to the input rotating speed and can ensure that the steam turbine can smoothly realize cylinder cutting.

Description

Automatic clutch device capable of achieving cylinder cutting and operation method thereof

Technical Field

The invention belongs to the technical field of clutches, and particularly relates to an automatic clutch device capable of realizing cylinder cutting and an operation method thereof.

Background

The clutch is an important part in the transmission system and is responsible for cutting off and combining power in the transmission system. With the continuous and rapid development of the mechanical industry, the clutch has very wide application in the fields of power machinery, ships, aerospace and the like. In particular, in the field of automobiles and agricultural machinery, a clutch is indispensable, the clutch for automobiles is generally arranged between an engine and a transmission and directly connected with the engine, and the clutch and a flywheel set of a crankshaft of the engine are normally integrally assembled into a whole and connected with the transmission on the other side. The clutch is equivalent to a switch and can connect and disconnect power, the driving part and the driven part of the clutch can be separated and combined, and the driving part and the driven part transmit torque in the form of friction and the like in the transmission process. The driving part and the driven part of the clutch are generally flexibly connected.

The clutch may be classified into an electromagnetic clutch, a magnetic powder clutch, a friction clutch, etc. according to the torque transmission mode. The friction clutch is widely known and used by people now, and comprises a driving part (namely, a transmission chain is used for transmitting power to the clutch), a driven part (namely, a part which is driven by the driving part and outputs the power), a pressing mechanism (namely, a key part for realizing the working of the clutch, and can realize the pressing and separation states of the clutch) and an operating mechanism (namely, a control part and can manually control the working state of the clutch). The main structure of the clutch, the driven part and the pressing mechanism are the precondition for ensuring the normal operation of the clutch, the torque can be transmitted only when the normal operation of the main part and the driven part is ensured, and the operating mechanism of the clutch mainly plays the role of controlling the action of the clutch and changing the working state of the clutch. The friction type clutch can transmit larger torque compared with other types of clutches, and can be applied to large mechanical structures.

The conventional friction clutch device usually needs to manually control the working state of the clutch device, and in some special occasions, the state of the clutch device needs to be controlled according to the rotating speed, such as cylinder cutting operation of a steam turbine, a critical interruption system for preventing overspeed of some power equipment, power distribution of a turbocharging system of an automobile and the like. The background that the cylinder technology appears in the steam turbine is in order to support the heat supply of steam power plant to get rid of the situation of "decide electricity with the heat", in recent years, along with the development of unit degree of depth peak shaving technique, energy storage device technique, steam turbine low pressure jar optical axis transformation technique, steam turbine low pressure jar cut jar technology etc. for under the current capacity of unchangeable unit, realize degree of depth peak shaving and the effective balance that adapts to large tracts of land heat supply. The multi-rotor clutch device is a key device for ensuring that the steam turbine smoothly realizes cylinder cutting.

In summary, a new multi-rotor automatic clutch device with rotation speed control is needed to ensure that the steam turbine can smoothly realize cylinder cutting.

Disclosure of Invention

The invention aims to provide an automatic clutch device capable of realizing cylinder cutting and an operation method thereof, so as to solve one or more technical problems. The clutch device can change the combination state according to the input rotating speed, and can ensure that the steam turbine can smoothly realize cylinder cutting.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention discloses an automatic clutch device capable of realizing cylinder cutting, which comprises: a driving shaft, a driven shaft and a driven wheel disc; one end of the driving shaft is provided with a first wheel disc, and the diameter of the first wheel disc is larger than that of the driving shaft; a first blind hole is formed in the circumferential surface of the first wheel disc along the radial direction, and a flyweight is movably arranged in the first blind hole; the first wheel disc is provided with a limiting device for limiting the flyweight; a pawl is hinged to the circumferential surface of the first wheel disc, is in an arc shape and is positioned above the first blind hole, and two ends of the pawl are respectively fixedly provided with a first magnet; two second magnets are arranged on the circumferential surface of the first wheel disc; the first magnet and the second magnet are opposite in position and repel each other, and the pawl can reach balance under the action of the first magnet and the second magnet; a second wheel disc is machined at one end of the driven shaft, and the diameter of the second wheel disc is larger than that of the driven shaft; an installation cavity is machined in the end face of the second wheel disc; the circular arc-shaped piston cylinder is fixedly arranged on the circumferential surface of the second wheel disc, a piston is arranged in the piston cylinder, the piston is connected with the head end of a circular arc-shaped piston rod, the tail end of the piston rod is a free end, and a hook is fixedly arranged at the tail end of the piston rod; the driven wheel disc is arranged in the mounting cavity of the second wheel disc, and forms a closed air chamber with the driven shaft; the closed air chamber is communicated with the piston cylinder through a pipeline;

when the device is used, when the rotating speed of the driving shaft exceeds a preset threshold value, one end of the flyweight protrudes out of the first blind hole to be in contact with the pawl, the balance of the pawl is damaged, the pawl is in contact with the hook, the piston is pushed to move in the piston cylinder through the piston rod, the end face of the driven wheel disc is in contact with and pressed against the end face of the first wheel disc under the action of compressed air, and power transmission is achieved.

The invention has the further improvement that the first wheel disc is provided with a limiting device which is used for limiting the flyweight, and the limiting device specifically comprises: a pressure spring is fixedly installed in a first blind hole of the first wheel disc and used for limiting the flyweight.

The invention is further improved in that the longitudinal section of the flyweight is T-shaped.

The invention is further improved in that the pawl is a T-shaped section component; when the pawl reaches a balanced state under the action of magnetic repulsion forces at two ends, the circle center of the pawl arc line is positioned on the axis of the driving shaft.

The invention is further improved in that the two second magnets are respectively mounted on the circumferential surface of the first wheel disc through blind hole structures.

A further improvement of the present invention is that the point of application of the flyweight is close to the pivot point of the pawl, as compared to the two ends of the pawl.

A further development of the invention is that the first wheel disc and the second wheel disc have the same diameter size.

A further development of the invention is that the mounting cavity comprises a first portion and a second portion; the first part is positioned in the second wheel disc, and the second part is positioned in the driven shaft; the longitudinal section of the second part is rectangular, so that the driven wheel disc can drive the driven shaft to rotate.

The operation method of the automatic clutch device capable of realizing cylinder cutting comprises the following steps:

when the input rotating speed of the driving shaft is less than or equal to a preset threshold value, the centrifugal force borne by the flyweight is small, the flyweight cannot fly out of the first blind hole under the action of the limiting device, the pawl on the first wheel disc is in a balanced state, the pawl is not in contact with the hook at the tail end of the piston rod, and the driving shaft cannot drive the driven shaft and is in a separated state;

when the input rotating speed of the driving shaft is greater than a preset threshold value, the flyweight flies out of the first blind hole under the action of centrifugal force to impact the pawl and destroy the balance state of the pawl, the pawl is in contact with the hook at the tail end of the piston rod to push the piston to move in the piston cylinder and further compress air in the closed air chamber, and the driven wheel disc is in contact with and tightly pressed against the first wheel disc under the pushing of the compressed air, so that the transmission of power is realized, and the driven wheel disc is in a combined state.

Further, it is particularly useful for small gas or steam turbines.

Compared with the prior art, the invention has the following beneficial effects:

the clutch device is a multi-rotor clutch device which can be used for a gas turbine and a steam turbine, can automatically perform clutch operation according to the rotating speed of a rotor (namely the rotating speed input by a driving shaft) by closely pressing and transmitting torque of a contact friction surface of a driven wheel disc and a first wheel disc, and can ensure that the steam turbine can smoothly realize cylinder cutting. The clutch device can change the combination state according to the input rotating speed, and when the input rotating speed of the driving shaft is higher than the preset maximum threshold rotating speed in practical application, the driving shaft can transmit power so as to drive the driven shaft to rotate; and when the input rotating speed of the driving shaft is lower than the preset threshold rotating speed, the driving mechanism is disconnected from the driven mechanism, and the power transmission is stopped. The clutch device is provided with a sensitive rotating speed sensing mechanism, the flyweight senses the change of the rotating speed through centrifugal force, and when the rotating speed exceeds a speed threshold value, the flyweight is in contact with the pawl to destroy the balance state of the pawl. After the pawl and the hook are combined, air is compressed by using the rotating speed difference between the driving shaft and the driven shaft, and the impact force between the pawl and the hook is reduced by the buffering action of the air.

In the invention, the pawl and the hook do not directly bear the torque between the driving shaft and the driven shaft, but the combination of the pawl and the hook pushes the piston air compressing pipe to compress air, so as to push the combination between the driven wheel disc and the driving shaft wheel disc, and the friction force between the wheel discs is utilized to transmit the torque. The piston air pressing pipe amplifies the smaller pressure between the flyweight and the pawl into larger pressure between the driven wheel disc and the driving shaft wheel disc, and the transmission of large torque from the driving shaft to the driven shaft is realized. The pawl and the hook do not participate in the transmission of torque, so that the acting force between the pawl and the hook is small; the disengagement between the pawl and the hook depends only on the centrifugal force to which the flyweight is subjected, i.e. the actual input speed, which means that the maximum speed threshold and the minimum speed threshold of the present invention are very close, which reduces the hysteresis of the disengagement of the clutch device.

Further, the long-arm lever design of the pawl enables the radial displacement of the flyweight to be amplified, and the pawl can be very sensitively responded to the change of the rotating speed and can be quickly attached to the hook at the tail end of the piston rod. Specifically, the pawl can adopt a long-arm lever structure, the pawl is maintained at a balance position by utilizing magnetic force, the force application point of the flyweight is close to the fulcrum of the pawl, and under the action of the long-arm lever structure, after the flyweight is contacted with the pawl, the smaller radial displacement of the flyweight can bring larger radial displacement of the tail end of the pawl.

The operation method is used for operating the clutch device, can change the combination state according to the input rotating speed, and can ensure that the steam turbine can smoothly realize cylinder cutting.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic diagram of the general structure of a multi-rotor clutch device for a small gas turbine and a steam turbine according to an embodiment of the present invention; wherein, fig. 1(a) is a schematic structural diagram at a certain angle, and fig. 1(b) is a schematic structural diagram at another angle;

FIG. 2 is a schematic cross-sectional view of a multi-rotor clutch assembly for a small gas turbine, steam turbine, according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a disk of the drive shaft in an embodiment of the present invention;

FIG. 4 is an enlarged partial view of the engagement of the pawl and hook in an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a driven wheel disk in an embodiment of the present invention.

In fig. 1 to 5, 1-driving shaft, 2-driven shaft, 3-driven wheel disc, 4-flyweight, 5-pressure spring, 6-cover plate, 7-pawl, 8-first magnet, 9-second magnet, 10-piston cylinder, 11-piston rod, 12-hook, 13-communicating pipe, 14-optical axis, 15-piston.

Detailed Description

In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following clearly and completely describes the technical solution of the embodiments of the present invention with reference to the drawings in the embodiments of the present invention; it is to be understood that the described embodiments are only some of the embodiments of the present invention. Other embodiments, which can be derived by one of ordinary skill in the art from the disclosed embodiments without inventive faculty, are intended to be within the scope of the invention.

The general schematic diagram of the multi-rotor clutch device for the small gas turbine and the steam turbine with the rotation speed control provided by the invention is shown in figure 1, and the technical scheme adopted in the figure is as follows:

the diameter has been processed to the one end of driving shaft 1 and has been greater than the rim plate of driving shaft 1, and three blind hole has been seted up along radial to the rim plate week, including the blind hole of a great aperture and arrange the blind hole of two less apertures in its both sides, wherein the installation has flyweight 4, pressure spring 5 and apron 6 in the blind hole of great aperture, and fixed mounting has a second magnet 9 in the blind hole of two less apertures respectively in addition.

The optical axis seat is further processed on the periphery of the wheel disc, the pawl 7 is hinged to a pawl 7 through an optical axis 14, the pawl 7 is an arc-shaped or T-shaped section component, two ends of the pawl 7 are respectively and fixedly connected with a first magnet 8, the first magnet 8 and a second magnet 9 corresponding to the position mutually repel each other, and the pawl 7 reaches a balance state under the action of magnetic repulsion forces at two ends, namely, the circle center of an arc line of the pawl 7 coincides with the axis of the driving shaft 1.

One end of the driven shaft 2 is processed with a U-shaped circular cavity, as shown in fig. 2, the U-shaped circular cavity is matched with the driven wheel disc 3 to form a closed air chamber, the air chamber is communicated with a piston cylinder 10 fixed on the circumference of one end of the driven shaft 2 through a communicating pipe 13, a piston 15 is arranged in the piston cylinder 10, and the piston 15 is connected with the head end of a piston rod 11 to jointly form a piston air compression pipe. The tail end of the piston rod 11 is a free end and is fixed with a hook 12, and the hook 12 axially extends towards the driving shaft 1. When in use, the first wheel disc of the driving shaft 1 is attached to the driven wheel disc 3

As shown in fig. 3, the flyweights 4 are radially movable in blind holes in the discs of the driveshaft 1. When the driving shaft 1 rotates, the flyweights 4 are subjected to centrifugal force to move outwards, the compression springs 5 are compressed in the outwards moving process, the flyweights 4 reach a balance position under the action of the centrifugal force and the elastic force, and the radial movement distance of the flyweights 4 is in direct proportion to the rotating speed. When the actual rotating speed exceeds the rotating speed threshold value, the flyweight 4 is in contact with the pawl 7, the balance of the pawl 7 is damaged, and the left end of the pawl 7 tilts and is far away from the axis of the driving shaft 1.

As shown in fig. 4, the pawl 7 is combined with the hook 12 on the piston rod 11, under the action of the speed difference between the driving shaft 1 and the driven shaft 2, the pawl 7 pushes the piston rod 11 to rotate, as shown in fig. 5, air in the piston cylinder 10 is compressed, as shown in fig. 2, the compressed air pushes the driven wheel disc 3 to move rightwards, the driven wheel disc 3 is tightly combined with the wheel disc of the driving shaft 1, the driving shaft 1 drives the driven shaft 2 to rotate under the action of friction force, it needs to be noted that the section of the long shaft at the left end of the driven wheel disc 3 is square, the inner hole of the driven shaft 2 matched with the long shaft is also a square hole, and vent holes are processed at four.

In addition, the pawl 7 adopts a long-arm lever structure, the pawl 7 is maintained at a balance position by using magnetic force, the force application point of the flyweight 4 is close to the fulcrum of the pawl 7, and under the action of the long-arm lever structure, after the flyweight 4 is contacted with the pawl 7, a smaller radial displacement of the flyweight 4 can bring a larger radial displacement of the tail end of the pawl 7, which means that a smaller rotation speed change can bring a larger displacement change at the moment, and the clutch state of the pawl 7 and the hook is more sensitive to the rotation speed change. In addition, under the state that clutch cuts off, most compressed air is located piston air pipe, and the gap between driven wheel dish 3 and driven shaft 2 is very little, guarantees that the volume change rate of compressed air is bigger, the compression ratio is bigger in whole piston stroke. In addition, driven wheel dish 3 fully contacts with compressed air, has guaranteed bigger area of contact and contact pressure. The acting force is transmitted in a pneumatic mode, so that the small pressure between the flyweight 4 and the pawl 7 can be amplified into the large pressure between the driven wheel disc 3 and the driving shaft wheel disc, and the large torque transmission from the driving shaft 1 to the driven shaft 2 is realized.

In the embodiment of the invention, the working process and the operation method of the automatic clutch device specifically comprise the following steps:

when the device works, when the rotating speed is low, the centrifugal force on the flyweight is small, the flyweight cannot fly out of the driving shaft wheel disc under the action of the elastic force of the pressure spring, a pawl on the driving shaft wheel disc is in a balanced state, the pawl cannot be in contact with a hook at the tail end of the piston rod, and the driving shaft cannot drive the driven shaft; when the input rotating speed is higher than the maximum threshold rotating speed, the flyweight flies out of the driving shaft wheel disc under the action of centrifugal force to impact the pawl, the balance state of the pawl is damaged, the pawl is in contact with the hook at the tail end of the piston rod to push the piston air compressing pipe to compress air, and the driven wheel disc is in contact with and tightly pressed against the driving shaft wheel disc under the pushing of the compressed air, so that the transmission of power is realized; when the input rotating speed is lower than the minimum threshold rotating speed, the flyweight cannot provide enough pressure to press the pawl on the hook, namely the pressure in the piston air pressing pipe cannot be maintained, and finally the pressing fit between the driving shaft wheel disc and the driven wheel disc and the transmission of torque are disconnected.

In summary, the multi-rotor clutch device for a small gas turbine or a steam turbine with rotation speed control provided by the invention has a sensitive rotation speed sensing mechanism, the flyweight senses the change of the rotation speed through centrifugal force, and when the rotation speed exceeds a speed threshold value, the flyweight is contacted with the pawl to destroy the balance state of the pawl. The long-arm lever design of the pawl enables the radial displacement of the flyweight to be amplified, and the pawl can respond to the change of the rotating speed very sensitively and can be attached to a hook at the tail end of the piston rod rapidly. Wherein the power range of small gas turbines is typically between 0.3 megawatts and 20 megawatts. After the pawl and the hook are combined, air is compressed by using the rotating speed difference between the driving shaft and the driven shaft, and the impact force between the pawl and the hook is reduced by the buffering action of the air. The pawl and the hook do not directly bear the torque between the driving shaft and the driven shaft, but the pawl and the hook are combined to push the piston air compressing pipe to compress air, so that the combination between the driven wheel disc and the driving shaft wheel disc is pushed, and the torque is transmitted by using the friction force between the wheel discs. The piston air pressing pipe amplifies the smaller pressure between the flyweight and the pawl into larger pressure between the driven wheel disc and the driving shaft wheel disc, and the transmission of large torque from the driving shaft to the driven shaft is realized. Because the pawl and the hook do not participate in the transmission of torque, the acting force between the pawl and the hook is small, and the design of the inclined joint surface is adopted, the separation between the pawl and the hook only depends on the centrifugal force applied by the flyweight, namely the actual input rotating speed, which means that the maximum rotating speed threshold value and the minimum rotating speed threshold value of the invention are very close, and the hysteresis phenomenon of separation of the clutch device is reduced.

Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.

Claims

1. The utility model provides a can realize cutting automatic clutch of jar which characterized in that includes: a driving shaft (1), a driven shaft (2) and a driven wheel disc (3);

one end of the driving shaft (1) is provided with a first wheel disc, and the diameter of the first wheel disc is larger than that of the driving shaft (1); a first blind hole is formed in the circumferential surface of the first wheel disc along the radial direction, and a flyweight (4) is movably arranged in the first blind hole; the first wheel disc is provided with a limiting device for limiting the flyweight (4); a pawl (7) is hinged to the circumferential surface of the first wheel disc, the pawl (7) is arc-shaped and is positioned above the first blind hole, and two ends of the pawl (7) are respectively fixedly provided with a first magnet (8); two second magnets (9) are arranged on the circumferential surface of the first wheel disc; the positions of the first magnet (8) and the second magnet (9) correspond to each other and repel each other, and the pawl (7) can reach balance under the action of the first magnet (8) and the second magnet (9);

a second wheel disc is machined at one end of the driven shaft (2), and the diameter of the second wheel disc is larger than that of the driven shaft (2); an installation cavity is machined in the end face of the second wheel disc; a circular arc-shaped piston cylinder (10) is fixedly installed on the circumferential surface of the second wheel disc, a piston (15) is installed in the piston cylinder (10), the piston (15) is connected with the head end of a circular arc-shaped piston rod (11), the tail end of the piston rod (11) is a free end, and a hook (12) is fixedly arranged at the tail end of the piston rod (11);

the driven wheel disc (3) is arranged in the mounting cavity of the second wheel disc and forms a closed air chamber with the driven shaft (2); the closed air chamber is communicated with the piston cylinder (10) through a communicating pipe (13);

when the device is used, when the rotating speed of the driving shaft (1) exceeds a preset threshold value, one end of the flyweight (4) protrudes out of the first blind hole to be in contact with the pawl (7), the balance of the pawl (7) is damaged, the pawl (7) is in contact with the hook (12), the piston (15) is pushed by the piston rod (11) to move in the piston cylinder (10), the end face of the driven wheel disc (3) is in contact with and pressed against the end face of the first wheel disc under the action of compressed air, and power transmission is achieved.

2. The automatic clutch device capable of realizing cylinder cutting according to claim 1, wherein a limiting device is arranged on the first wheel disc and used for limiting the flyweight (4), and specifically comprises:

a pressure spring (5) is fixedly installed in a first blind hole of the first wheel disc, and the pressure spring (5) is used for limiting the flyweight (4).

3. The automatic clutch device capable of realizing cylinder cutting according to claim 2, characterized in that the longitudinal section of the flyweight (4) is T-shaped.

4. The automatic clutch device capable of realizing cylinder cutting according to claim 1, characterized in that the pawl (7) is a T-shaped cross-section member; when the pawl (7) reaches a balanced state under the action of magnetic repulsion at two ends, the circle center of the arc line of the pawl (7) is positioned on the axis of the driving shaft (1).

5. The automatic clutch device capable of realizing cylinder cutting according to claim 1, wherein two second magnets (9) are respectively installed on the circumferential surface of the first wheel disc through a blind hole structure.

6. The automatic clutch device capable of realizing cylinder cutting according to claim 1, characterized in that the point of application of the flyweight (4) is close to the hinge point of the pawl (7) compared with the two ends of the pawl (7).

7. The automatic clutch device capable of realizing cylinder cutting according to claim 1, wherein the diameters of the first wheel disc and the second wheel disc are the same.

8. The automatic clutch device capable of achieving cylinder cutting according to claim 1, wherein the mounting cavity comprises a first portion and a second portion;

the first part is positioned in the second wheel disc, and the second part is positioned in the driven shaft (2); the longitudinal section of the second part is rectangular, so that the driven wheel disc (3) can drive the driven shaft (2) to rotate.

9. An operation method of the automatic clutch device capable of achieving cylinder cutting according to any one of claims 1 to 8, characterized by comprising the following steps:

when the rotating speed of the driving shaft (1) is less than or equal to a preset threshold value, the centrifugal force applied to the flyweight (4) is small, the flyweight cannot fly out of the first blind hole under the action of the limiting device, the pawl (7) on the first wheel disc is in a balanced state, the pawl (7) is not in contact with the hook (12) at the tail end of the piston rod (11), and the driving shaft (1) cannot drive the driven shaft (2) and is in a separated state;

when the input rotating speed of the driving shaft (1) is greater than a preset threshold value, the flyweight (4) flies out of the first blind hole under the action of centrifugal force to impact the pawl (7) and damage the balance state of the pawl (7), the pawl (7) is in contact with the hook (12) at the tail end of the piston rod (11), the piston (15) is pushed to move in the piston cylinder (10), air in the closed air chamber is further compressed, the driven wheel disc (3) is in contact with and tightly presses the first wheel disc under the pushing of the compressed air, the transmission of power is realized, and the driven wheel disc is in a combined state.

10. The method for operating the automatic clutch device capable of achieving cylinder cutting according to claim 9 is used for a small gas turbine or a steam turbine.