An air control device with a cam structure

Abstract

The present invention discloses an air control device with a cam structure, which relates to the field of air control systems for aeroengines. The air control device with a cam structure includes a valve body, a track housing is arranged above the valve body, a cam is arranged on the inner wall of the track housing, and an actuator cylinder body is connected to the end of the cam. The air control device with a cam structure drives the cam mechanism through the movement of the piston rod of the actuator cylinder to realize full opening and full closing of the valve. The full opening and full closing of the valve realize the passage and cutoff of cooling air. Under the action of a high-temperature sealing component and a metal sealing ring, the high-temperature sealing performance of the air valve is improved, and the engine efficiency is increased. Under the action of the load force of the actuator cylinder, a cam mechanism is used for force transmission to avoid valve jamming caused by the influence of lateral force.

Description

Technical Field

[0001] The present invention belongs to the field of the design of the air control system of an aero-engine, and relates to an active control device for transmitting vertical force with a cam structure. Background Art

[0002] In order to improve the engine efficiency, under low heat load conditions such as the cruise state, the amount of cold air can be reduced by actively controlling the cold air for cooling the turbine.

[0003] The specific method is to control the cold air flow through an adjusting device, providing a larger amount of cold air when the heat load is large and reducing the cold air amount when the heat load is small, so as to reduce the fuel consumption rate of the engine. Therefore, an air control device with a cam structure is proposed to solve the above problems. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides an air control device with a cam structure, which solves the problems of low engine efficiency, inability to actively control the cold air for cooling the turbine under low heat load conditions such as the cruise state, resulting in a large amount of cold air consumption.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the present invention is realized through the following technical solutions: an air control device with a cam structure, comprising:

[0008] A valve body, a track housing is arranged above the valve body, a cam is arranged on the inner wall of the track housing, and an actuator cylinder body is arranged at the end of the cam;

[0009] A micro switch assembly is arranged inside the actuator cylinder body, and the micro switch assembly includes an electrical socket and a micro switch, and the electrical socket is arranged outside the actuator cylinder body;

[0010] An actuator assembly is arranged inside the actuator cylinder body, and the actuator assembly includes a piston rod and a return spring, and the piston rod is arranged inside the actuator cylinder body;

[0011] A valve assembly is arranged inside the valve body, and the valve assembly includes a connection cap and a valve core;

[0012] A connection assembly is arranged between the valve body and the cam, and the connection assembly includes a triangular guide rail.

[0013] Preferably, the end of the cam is connected to the cylinder body of the actuating cylinder. The other end of the cylinder body of the actuating cylinder is provided with an end cap. The outer surface of the cylinder body of the actuating cylinder is provided with an outer cover. The outer surface of the cylinder body of the actuating cylinder is provided with two micro switches. The outer surface of the cylinder body of the actuating cylinder is provided with a trigger rod. The trigger rod is slidably connected to the outer surface of the cylinder body of the actuating cylinder. One end of the trigger rod is connected with a connecting rod.

[0014] Preferably, the connecting rod is connected to the outer surface of the cam. The end of the trigger rod inside the cylinder body of the actuating cylinder is connected with a trigger handle. The outer surface of the cam is provided with a triangular guide rail. A guide groove is provided on the inner wall of the cam. Two cam guide bearings are slidably connected to the inner wall of the guide groove.

[0015] Preferably, the cam guide bearing is rotatably connected to the outer surface of the connecting cap. The outer surface of the connecting cap is rotatably connected with two vertical guide bearings. The vertical guide bearings are arranged on the inner wall of the track housing. A chute is provided on the inner wall of the track housing. The vertical guide bearings are slidably connected to the inner wall of the track housing through the chute. The lower surface of the connecting cap is connected with the valve core. A lock washer is arranged between the valve core and the connecting cap.

[0016] Preferably, a nut is arranged on the lower surface of the lock washer. The lock washer is connected with the connecting cap through the nut. A high-temperature sealing assembly is arranged inside the valve body. A ring nut is arranged on the outer surface of the valve body. The ring nut is fixed above the high-temperature sealing assembly. The high-temperature sealing assembly is connected with the valve core. A metal sealing ring is arranged on the outer surface of the valve body.

[0017] Preferably, the metal sealing ring is connected with the valve core. Six round holes are symmetrically opened at the lower end of the valve body as air inlets. A hole groove is machined at the upper end to ensure the installation of the high-temperature sealing assembly.

[0018] Preferably, the end of the piston rod penetrates through the cylinder body of the actuating cylinder and extends outwards. The end extending outwards is connected with the cam. A return spring is arranged on the outer surface of the piston rod. The return spring is inside the cylinder body of the actuating cylinder. A spring seat is arranged inside the cylinder body of the actuating cylinder. The end of the return spring is connected with the spring seat. A rodless cavity pipe joint, a rod cavity pipe joint and an oil leakage port are opened on the outer surface of the piston rod.

[0019] The present invention discloses an air control device with a cam structure, and the beneficial effects thereof are as follows:

[0020] 1. For the air control device with the cam structure, through the movement of the piston rod of the actuating cylinder, the cam mechanism is driven to realize the full opening and full closing of the valve. The full opening and full closing of the valve realize the passage and cut-off of the cooling air. Under the action of the high-temperature sealing assembly and the metal sealing ring, the high-temperature sealing performance of the air valve is high, and the engine efficiency is improved.

[0021] 2. The air control device with the cam structure, under the action of the load force of the actuator, makes the cam move horizontally, enables the track housing to bear the lateral force on the piston rod, makes the connecting cap move vertically, enables the track housing to bear the lateral force on the valve core, and uses a cam mechanism for force transmission to avoid valve jamming caused by the influence of lateral force.

[0022] 3. The air control device with the cam structure, under the action of the actuator assembly, achieves the control of the oil pressure of the rodless cavity pipe joint and the rod cavity pipe joint, enabling the independent isolation design of the gas-liquid device, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the actuator cylinder body of the present invention;

[0026] Figure 3 It is a schematic internal structure diagram of the actuator cylinder body of the present invention;

[0027] Figure 4 It is a schematic internal structure diagram of the valve body of the present invention;

[0028] Figure 5 It is a schematic structural diagram of the triangular guide rail of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the connecting cap of the present invention.

[0030] In the figure: 1. Valve body; 101. Track housing; 102. Chute; 103. Cam; 104. Actuator cylinder body; 2. Outer cover; 201. Electric socket; 202. Microswitch; 203. Touch rod; 204. Touch handle; 205. Link; 3. End cover; 4. Piston rod; 401. Return spring; 402. Spring seat; 403. Rodless cavity pipe joint; 404. Rod cavity pipe joint; 405. Oil leakage port; 5. Connecting cap; 501. Valve core; 502. Locking piece; 503. Nut; 504. Ring nut; 505. High-temperature sealing assembly; 506. Metal sealing ring; 6. Triangular guide rail; 601. Cam guide bearing; 602. Vertical guide bearing. DETAILED DESCRIPTION OF THE INVENTION

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] By providing an air control device with a cam structure in the embodiments of the present application, the problems of low engine efficiency and inability to actively control the cold air for the cooling turbine under low heat load conditions such as the cruise state, resulting in a large amount of cold air consumption, are solved. It is realized that the cold air flow is controlled by an adjusting device, providing a large amount of cold air when the heat load is large and reducing the cold air amount when the heat load is small, so as to reduce the fuel consumption rate of the engine.

[0033] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0034] Embodiment 1

[0035] An embodiment of the present invention discloses an air control device with a cam structure.

[0036] As shown in the attached Figures 1-6 drawing, it includes:

[0037] A valve body 1, with an orbital housing 101 arranged above the valve body 1. A cam 103 is arranged on the inner wall of the orbital housing 101, and an actuator cylinder body 104 is arranged at the end of the cam 103;

[0038] An actuator switch assembly is arranged inside the actuator cylinder body 104. The actuator switch assembly includes an electrical socket 201 and a microswitch 202, and the electrical socket 201 is arranged outside the actuator cylinder body 104;

[0039] An actuator assembly is arranged inside the actuator cylinder body 104. The actuator assembly includes a piston rod 4 and a return spring 401, and the piston rod 4 is arranged inside the actuator cylinder body 104;

[0040] A valve assembly is arranged inside the valve body 1. The valve assembly includes a connection cap 5 and a valve core 501;

[0041] A connection assembly is arranged between the valve body 1 and the cam 103. The connection assembly includes a triangular guide rail 6.

[0042] Working principle: Through the valve assembly, full opening and full closing of the valve are realized, and the full opening and full closing of the valve realize the passage and cut-off of the cooling air;

[0043] Under the action of the high-temperature sealing component 505 and the metal sealing ring 506, the high-temperature sealing performance of the air valve is improved, and the engine efficiency is enhanced.

[0044] Under the action of the connecting component, the cam 103 moves horizontally, enabling the track housing 101 to bear the lateral force on the piston rod 4, causing the connecting cap 5 to move horizontally, enabling the track housing 101 to bear the lateral force on the valve core 501. The cam mechanism is used for force transmission to avoid valve jamming caused by the influence of lateral force.

[0045] When the cam 103 moves, under the action of the microswitch component, the signal feedback function is realized to display the opening and closing position of the air valve.

[0046] When the piston rod 4 inside the control actuator cylinder body 104 moves, under the action of the actuator assembly, the opening and closing of the rodless cavity pipe joint 403 and the rod cavity pipe joint 404 are controlled, enabling the independent isolation design of the gas-liquid device, which is safe and reliable.

[0047] Embodiment 2:

[0048] The embodiment of the present invention discloses an air control device with a cam structure.

[0049] According to the attached Figure 2 As shown, it includes:

[0050] A valve body 1, with a track housing 101 arranged above the valve body 1. A cam 103 is arranged on the inner wall of the track housing 101, and an actuator cylinder body 104 is arranged at the end of the cam 103;

[0051] Inside the actuator cylinder body 104, a microswitch component is arranged. The microswitch component includes an electrical socket 201 and a microswitch 202, and the electrical socket 201 is arranged outside the actuator cylinder body 104;

[0052] Inside the actuator cylinder body 104, an actuator assembly is arranged. The actuator assembly includes a piston rod 4 and a return spring 401, and the piston rod 4 is arranged inside the actuator cylinder body 104;

[0053] Inside the valve body 1, a valve component is arranged. The valve component includes a connecting cap 5 and a valve core 501;

[0054] Between the valve body 1 and the cam 103, a connecting component is arranged. The connecting component includes a triangular guide rail 6.

[0055] The end of the cam 103 is connected to the actuator cylinder body 104. At the other end of the actuator cylinder body 104, an end cap 3 is arranged. On the outer surface of the actuator cylinder body 104, an outer cover 2 is arranged. On the outer surface of the actuator cylinder body 104, two microswitches 202 are arranged. On the outer surface of the actuator cylinder body 104, a touch rod 203 is arranged;

[0056] The trigger rod 203 is slidably connected to the outer surface of the actuator cylinder body 104. One end of the trigger rod 203 is connected to a connecting rod 205, and the connecting rod 205 is connected to the outer surface of the cam 103. One end of the trigger rod 203 inside the actuator cylinder body 104 is connected to a trigger handle 204;

[0057] Working principle: When the cam 103 moves, the trigger rod 203 moves, and at this time, the functions of triggering the trigger handle 204 and the two trigger rods 203 are realized. The micro switch 202 and the trigger rod 203 realize the signal feedback function to display the opening and closing position of the air valve.

[0058] Embodiment 3

[0059] The embodiment of the present invention discloses an air control device with a cam structure.

[0060] According to the appendix Figure 3 As shown, it includes:

[0061] A valve body 1, a track housing 101 is arranged above the valve body 1, a cam 103 is arranged on the inner wall of the track housing 101, and an actuator cylinder body 104 is arranged at the end of the cam 103;

[0062] A micro switch assembly is arranged inside the actuator cylinder body 104. The micro switch assembly includes an electrical socket 201 and a micro switch 202, and the electrical socket 201 is arranged outside the actuator cylinder body 104;

[0063] An actuator cylinder assembly is arranged inside the actuator cylinder body 104. The actuator cylinder assembly includes a piston rod 4 and a return spring 401, and the piston rod 4 is arranged inside the actuator cylinder body 104;

[0064] A valve assembly is arranged inside the valve body 1. The valve assembly includes a connecting cap 5 and a valve core 501;

[0065] A connecting assembly is arranged between the valve body 1 and the cam 103. The connecting assembly includes a triangular guide rail 6.

[0066] The end of the piston rod 4 penetrates through the actuator cylinder body 104 and extends outward. The outward extending end is connected to the cam 103. A return spring 401 is arranged on the outer surface of the piston rod 4, and the return spring 401 is inside the actuator cylinder body 104;

[0067] A spring seat 402 is arranged inside the actuator cylinder body 104. The end of the return spring 401 is connected to the spring seat 402. A rodless cavity pipe joint 403, a rod cavity pipe joint 404 and an oil leakage port 405 are arranged on the outer surface of the piston rod 4;

[0068] Working principle: Under the movement of the piston rod 4, the state of the return spring 401 changes. At the same time, the rodless chamber pipe joint 403 and the rod chamber pipe joint 404 are triggered to act, achieving the control of the opening and closing of the rodless chamber pipe joint 403 and the rod chamber pipe joint 404, displaying the switch position of the air valve. The oil leakage port 405 collects the leaked fuel of the actuator component. The gas-liquid device is independently isolated and designed, which is safe and reliable.

[0069] Embodiment 4

[0070] The embodiment of the present invention discloses an air control device with a cam structure.

[0071] According to the attached Figure 4 shown, it includes:

[0072] A valve body 1, a track housing 101 is arranged above the valve body 1, a cam 103 is arranged on the inner wall of the track housing 101, and an actuator cylinder body 104 is arranged at the end of the cam 103;

[0073] A microswitch assembly is arranged inside the actuator cylinder body 104. The microswitch assembly includes an electrical socket 201 and a microswitch 202. The electrical socket 201 is arranged outside the actuator cylinder body 104;

[0074] An actuator assembly is arranged inside the actuator cylinder body 104. The actuator assembly includes a piston rod 4 and a return spring 401. The piston rod 4 is arranged inside the actuator cylinder body 104;

[0075] A valve assembly is arranged inside the valve body 1. The valve assembly includes a connection cap 5 and a valve core 501;

[0076] A connection assembly is arranged between the valve body 1 and the cam 103. The connection assembly includes a triangular guide rail 6.

[0077] The lower surface of the connection cap 5 is connected to the valve core 501. A lock washer 502 is arranged between the valve core 501 and the connection cap 5. A nut 503 is arranged on the lower surface of the lock washer 502. The lock washer 502 is connected to the connection cap 5 through the nut 503;

[0078] A high-temperature sealing assembly 505 is arranged inside the valve body 1. A ring nut 504 is arranged on the outer surface of the valve body 1. The ring nut 504 is fixed above the high-temperature sealing assembly 505. The high-temperature sealing assembly 505 is connected to the valve core 501;

[0079] A metal sealing ring 506 is arranged on the outer surface of the valve body 1. The metal sealing ring 506 is connected to the valve core 501. Six circular holes are symmetrically opened at the lower end of the valve body 1 as air inlets, and a hole groove is machined at the upper end to ensure the installation of the high-temperature sealing assembly 505;

[0080] Working principle: When air enters through the air inlet hole opened on the lower surface of the valve body 1, the valve core 501 moves in one direction, causing the connection cap 5 connected to the end of the valve core 501 to move in one direction. At this time, the movement of the valve core 501 realizes the fully open and fully closed states of the valve, and the fully open and fully closed states of the valve realize the passage and cutoff of the cooling air.

[0081] Under the action of the high-temperature sealing component 505 and the metal sealing ring 506, the high-temperature sealing performance of the air valve is improved, and the engine efficiency is increased.

[0082] Example Five

[0083] An embodiment of the present invention discloses an air control device with a cam structure.

[0084] According to the attached Figure 5 and Figure 6 shown, it includes:

[0085] Valve body 1, a track housing 101 is arranged above the valve body 1, a cam 103 is arranged on the inner wall of the track housing 101, and an actuator cylinder body 104 is arranged at the end of the cam 103;

[0086] A microswitch assembly is arranged inside the actuator cylinder body 104. The microswitch assembly includes an electrical socket 201 and a microswitch 202, and the electrical socket 201 is arranged outside the actuator cylinder body 104;

[0087] An actuator cylinder assembly is arranged inside the actuator cylinder body 104. The actuator cylinder assembly includes a piston rod 4 and a return spring 401, and the piston rod 4 is arranged inside the actuator cylinder body 104;

[0088] A valve assembly is arranged inside the valve body 1. The valve assembly includes a connection cap 5 and a valve core 501;

[0089] A connection assembly is arranged between the valve body 1 and the cam 103. The connection assembly includes a triangular guide rail 6.

[0090] The outer surface of the cam 103 is provided with a triangular guide rail 6, and a guide groove is provided on the inner wall of the cam 103. Two cam guide bearings 601 are slidably connected to the inner wall of the guide groove, and the cam guide bearings 601 are rotatably connected to the outer surface of the connection cap 5;

[0091] Two vertical guide bearings 602 are rotatably connected to the outer surface of the connection cap 5. The vertical guide bearings 602 are arranged on the inner wall of the track housing 101, and a chute 102 is provided on the inner wall of the track housing 101. The vertical guide bearings 602 are slidably connected to the inner wall of the track housing 101 through the chute 102;

[0092] When converting horizontal motion into vertical motion, lateral forces will surely be generated. One is the lateral force in the vertical direction on the piston rod 4, and the other is the lateral force in the horizontal direction on the valve core 501.

[0093] The lateral forces may cause jamming of the actuator cylinder body 104 and the valve body 1. To reduce the influence of the lateral forces, at this time, under the guiding action of the triangular guide rail 6, the cam guide bearing 601, and the vertical guide bearing 602, the cam 103 performs horizontal motion, enabling the track housing 101 to bear the lateral force on the piston rod 4, enabling the connecting cap 5 to perform vertical motion, enabling the track housing 101 to bear the lateral force on the valve core 501, and using a cam mechanism for force transmission to avoid valve jamming caused by the influence of lateral forces.

[0094] Working principle: When air enters through the air inlet hole opened on the lower surface of the valve body 1, the valve core 501 moves in one direction, thereby causing the connecting cap 5 connected to the end of the valve core 501 to move in one direction. At this time, the movement of the valve core 501 realizes the full opening and full closing of the valve. The full opening and full closing of the valve realize the passage and cutoff of the cooling air. Under the action of the high-temperature sealing component 505 and the metal sealing ring 506, the high-temperature sealing performance of the air valve is improved, and the engine efficiency is increased.

[0095] When converting horizontal motion into vertical motion, lateral forces will surely be generated. One is the lateral force in the vertical direction on the piston rod 4, and the other is the lateral force in the horizontal direction on the valve core 501.

[0096] The lateral forces may cause jamming of the actuator cylinder body 104 and the valve body 1. To reduce the influence of the lateral forces, at this time, under the guiding action of the triangular guide rail 6, the cam guide bearing 601, and the vertical guide bearing 602, the cam 103 performs horizontal motion, enabling the track housing 101 to bear the lateral force on the piston rod 4, enabling the connecting cap 5 to perform horizontal motion, enabling the track housing 101 to bear the lateral force on the valve core 501, and using a cam mechanism for force transmission to avoid valve jamming caused by the influence of lateral forces.

[0097] When the cam 103 moves, the trigger rod 203 moves. At this time, the functions of the trigger handle 204 and the two trigger rods 203 are realized. The microswitch 202 and the trigger rod 203 realize the signal feedback function to display the opening and closing position of the air valve.

[0098] When controlling the movement of the piston rod 4 inside the actuator cylinder body 104, under the movement of the piston rod 4, the state of the return spring 401 changes. At the same time, the no-rod chamber pipe joint 403, the rod chamber pipe joint 404, and the oil leakage port 405 are triggered accordingly, achieving the control of the opening and closing of the no-rod chamber pipe joint 403 and the rod chamber pipe joint 404, enabling the independent isolation design of the gas-liquid device, which is safe and reliable.

[0099] In summary, compared with the prior art, the following beneficial effects are achieved:

[0100] 1. The opening and closing of the air valve are controlled by a fuel actuator cylinder.

[0101] 2. The gas-liquid device is independently isolated and designed, which is safe and reliable.

[0102] 3. A cam mechanism is adopted for force transmission.

[0103] 4. The high-temperature sealing performance of the air valve is high, which improves the engine efficiency.

[0104] 5. The opening and closing positions of the air valve are displayed.

[0105] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0106] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An air control device with a cam structure, comprising: A valve body (1), above which there is a track housing (101). On the inner wall of the track housing (101), there is a cam (103), and the end of the cam (103) is connected to an actuator cylinder body (104); It is characterized in that: inside the actuator cylinder body (104), there is a microswitch assembly, and the microswitch assembly includes an electrical socket (201) and a microswitch (202), and the electrical socket (201) is arranged outside the actuator cylinder body (104); Inside the actuator cylinder body (104), there is an actuator assembly, and the actuator assembly includes a piston rod (4) and a return spring (401), and the piston rod (4) is arranged inside the actuator cylinder body (104); Inside the valve body (1), there is a valve assembly, and the valve assembly includes a connecting cap (5) and a valve core (501); Between the valve body (1) and the cam (103), there is a connecting assembly, and the connecting assembly includes a triangular guide rail (6).

2. The air control device with a cam structure according to claim 1, characterized in that: The end of the cam (103) is connected to the actuator cylinder body (104). At the other end of the actuator cylinder body (104), there is an end cap (3). On the outer surface of the actuator cylinder body (104), there is an outer cover (2). On the outer surface of the actuator cylinder body (104), there are two microswitches (202). On the outer surface of the actuator cylinder body (104), there is a trigger rod (203), and the trigger rod (203) is slidably connected to the outer surface of the actuator cylinder body (104). One end of the trigger rod (203) is connected to a connecting rod (205).

3. The air control device with a cam structure according to claim 2, characterized in that: The connecting rod (205) is connected to the outer surface of the cam (103). The end of the trigger rod (203) inside the actuator cylinder body (104) is connected to a trigger handle (204). On the outer surface of the cam (103), there is a triangular guide rail (6). On the inner wall of the cam (103), there is a guide groove, and on the inner wall of the guide groove, there are two cam guide bearings (601) slidably connected.

4. The air control device with a cam structure according to claim 3, characterized in that: The cam guide bearings (601) are rotatably connected to the outer surface of the connecting cap (5). On the outer surface of the connecting cap (5), there are two vertical guide bearings (602) rotatably connected. The vertical guide bearings (602) are arranged on the inner wall of the track housing (101). On the inner wall of the track housing (101), there is a chute (102), and the vertical guide bearings (602) are slidably connected to the inner wall of the track housing (101) through the chute (102). The lower surface of the connecting cap (5) is connected to the valve core (501), and between the valve core (501) and the connecting cap (5), there is a lock piece (502).

5. An air control device with a cam structure according to claim 4, characterized in that: A nut (503) is provided on the lower surface of the locking piece (502). The locking piece (502) is connected to the connecting cap (5) through the nut (503). A high-temperature sealing assembly (505) is provided inside the valve body (1). A collar nut (504) is provided on the outer surface of the valve body (1). The collar nut (504) is fixed above the high-temperature sealing assembly (505). The high-temperature sealing assembly (505) is connected to the valve core (501). A metal sealing ring (506) is provided on the outer surface of the valve body (1).

6. The air control device with a cam structure according to claim 5, characterized in that: The metal sealing ring (506) is connected to the valve core (501). Six round holes are symmetrically opened at the lower end of the valve body (1) as air inlets, and a hole groove is machined at the upper end to ensure the installation of the high-temperature sealing assembly (505).

7. The air control device with a cam structure according to claim 1, characterized in that: The end of the piston rod (4) penetrates through the actuating cylinder barrel (104) and extends outward. The end extending outward is connected to the cam (103). A return spring (401) is provided on the outer surface of the piston rod (4). The return spring (401) is inside the actuating cylinder barrel (104). A spring seat (402) is provided inside the actuating cylinder barrel (104). The end of the return spring (401) is connected to the spring seat (402). A non-rod chamber pipe joint (403), a rod chamber pipe joint (404), and an oil leakage port (405) are opened on the outer surface of the piston rod (4).

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