Device for preventing galloping of engine

Abstract

The utility model discloses a device for preventing an engine from galloping, which belongs to the field of engines and comprises a power shaft, the end of the power shaft is fixedly sleeved with a machine body, the outer wall of the power shaft is provided with a speed reduction assembly, the speed reduction assembly comprises a speed reduction disc rotationally sleeved on the outer wall of the power shaft, and the side wall of the speed reduction disc is fixedly connected with a filling air bag. Through cooperative use of all the devices, friction in the speed reduction process can be reduced, the galloping phenomenon of an engine when the gravity is large during downhill is avoided, by means of the arrangement of the speed reduction disc, the filling air bag, the speed reduction cam, the air guide cone and the buffer disc in cooperation with the arrangement of the brake assembly, repeated expansion of the filling air bag can be utilized, and the speed reduction effect is improved. The assembly is simple in structure, the phenomenon that the speed reduction effect is reduced due to the fact that the instantaneous friction force is large during instantaneous contact can be avoided, the speed reduction effect of the engine can be improved in cooperation with arrangement of the speed reduction assembly, and the service life of the engine is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to an engine technical field, concretely is a device that prevents engine fly car. BACKGROUND

[0002] The single-track engine is a device for providing power for the single-track crane, which is flexible in movement. The single-track engine is relatively small in size, and after being installed on the single-track crane, the crane can run flexibly in narrow lanes or spaces, with a small turning radius and being able to adapt to complex working environments.

[0003] According to the search, the Chinese utility model patent discloses a free release winch non-contact fly car damping device (publication number: CN213059986U), which relates to the technical field of winch damping. The free release winch non-contact fly car damping device comprises a device main body, the top of the device main body is rotationally connected with a rotating drum through a connecting rod, the outer wall of the rotating drum is fixedly connected with a driving sleeve, the inner wall of the rotating drum is fixedly connected with a mounting sleeve, and the outer wall of the mounting sleeve is fixedly connected with the inner wall of a first damping piece. When the rotating speed of the winch engine is out of control, the first damping piece will automatically adhere to the second damping piece to reduce the rotating speed of the winch shaft, thereby effectively preventing accidents caused by the out-of-control rotating speed of the engine. Moreover, the rotating shaft of the winch is installed inside the mounting sleeve, and the second damping piece does not need to contact the rotating shaft to achieve the damping effect, thereby effectively preventing the winch rotating shaft from being damaged due to excessive wear after long-term use.

[0004] Although the above-mentioned patent sets up the device main body, the driving sleeve, the mounting sleeve and other components, and the first damping piece and the second damping piece are matched with each other, when the rotating speed of the engine is out of control, the two pieces contact each other, and the engine is slowed down through the friction of the damping pieces, but since the pressure of the damping pieces is large during the operation of the engine, when the rotating speed is high, the two pieces quickly contact each other, the instantaneous pressure of the damping pieces is too large, and the damping piece body is easily damaged, which is not conducive to improving the service life of the engine.

[0005] Therefore, the utility model provides a device for preventing engine fly car to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0006] The utility model provides a device for preventing engine fly car, and aims to solve the problems proposed in the background art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A device for preventing engine fly car, comprising a power shaft, an end of the power shaft is fixedly sleeved with a body, and the outer wall of the power shaft is provided with a speed reduction assembly.

[0009] The deceleration assembly comprises a deceleration disc rotatably sleeved on the outer wall of the power shaft, the side wall of the deceleration disc is fixedly connected with a filling air bag, the outer wall of the power shaft is fixedly sleeved with a deceleration cam at the position corresponding to the filling air bag, the inner side wall of the deceleration cam is fixedly connected with a convex ball, the outer wall of the filling air bag is fixedly connected with an air inlet, the inner wall of the air inlet is fixedly connected with a retainer, the inner side wall of a plurality of retainers is fixedly connected with a gas guide cone, and the outer wall of the power shaft is provided with a speed reduction assembly.

[0010] As a preferred technical solution of the present application, the gas guide cone is internally provided with a gas groove, the outer wall of the gas guide cone is fixedly connected with a buffer disc, and the inner wall of the buffer disc is fixedly connected with a gas plate.

[0011] As a preferred technical solution of the present application, the speed reduction assembly comprises a speed reduction disc rotatably sleeved on the outer wall of the power shaft, the outer wall of the power shaft is fixedly sleeved with a rotating sleeve inside the speed reduction disc, and the outer wall of the rotating sleeve is fixedly connected with a stirring blade.

[0012] As a preferred technical solution of the present application, the speed reduction assembly further comprises a non-Newtonian fluid filled in the speed reduction disc, the outer wall of the speed reduction disc is fixedly connected with a feeding port, and the inner wall of the feeding port is threadedly connected with a blocking plug.

[0013] As a preferred technical solution of the present application, the outer wall of the machine body is fixedly connected with a plurality of heat dissipation fins, and the side wall of the machine body is fixedly connected with a brake device.

[0014] As a preferred technical solution of the present application, the outer wall of the brake device is fixedly connected with an exhaust pipe, and the end of the exhaust pipe is fixedly connected with the end of the air inlet.

[0015] The machine body can provide sufficient power source for the power shaft, ensure strong power during operation, reduce friction in the deceleration process by the arrangement of the deceleration assembly, avoid the phenomenon of flying of the engine when the gravity is large on the downhill, and utilize the arrangement of the deceleration disc, the filling air bag, the deceleration cam, the gas guide cone and the buffer disc, cooperate with the arrangement of the brake assembly, utilize the repeated expansion of the filling air bag to interrupt the intermittent friction deceleration of the deceleration cam inside, the component structure is simple, can avoid large instantaneous friction force when instantaneous contact, cause the phenomenon of reducing the deceleration effect, can cooperate with the arrangement of the speed reduction assembly, improve the deceleration effect of the engine, and improve the service life of the engine. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of a device for preventing the flying of the engine.

[0017] Figure 2It is a structure diagram of a speed reduction disc in a device for preventing engine runaway.

[0018] Figure 3 It is a structure diagram of a filling air bag in a device for preventing engine runaway.

[0019] Figure 4 It is a structure diagram of a gas guide cone in a device for preventing engine runaway.

[0020] Figure 5 It is a structure diagram of a stirring blade in a device for preventing engine runaway.

[0021] In the figure:

[0022] 1, power shaft; 2, machine body; 3, speed reduction disc; 4, filling air bag; 5, speed reduction cam; 6, air inlet; 7, retainer; 8, gas guide cone; 9, air groove; 10, buffer disc; 11, air plate; 12, speed reduction disc; 13, rotating sleeve; 14, stirring blade; 15, non-Newtonian fluid; 16, feed inlet; 17, heat dissipation fin; 18, brake device; 19, exhaust pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] The utility model provides a device for preventing engine runaway, as shown in the figure, the device for preventing engine runaway, including power shaft 1, the end of power shaft 1 is fixedly sleeved with machine body 2, and the outer wall of power shaft 1 is provided with a speed reduction assembly. Figures 1-5

[0025] The speed reduction assembly comprises a speed reduction disc 3 rotatably sleeved on the outer wall of the power shaft 1, the side wall of the speed reduction disc 3 is fixedly connected with a filling air bag 4, the outer wall of the power shaft 1 is fixedly sleeved with a speed reduction cam 5 at the position corresponding to the filling air bag 4, the inner side wall of the speed reduction cam 5 is fixedly connected with a convex ball, the outer wall of the filling air bag 4 is fixedly connected with an air inlet 6, the inner wall of the air inlet 6 is fixedly connected with a retainer 7, the inner side wall of the plurality of retainers 7 is fixedly connected with a gas guide cone 8, and the outer wall of the power shaft 1 is provided with a speed reduction assembly.

[0026] The gas guide cone 8 is internally provided with an air groove 9, the outer wall of the gas guide cone 8 is fixedly connected with a buffer disc 10, and the inner wall of the buffer disc 10 is fixedly connected with an air plate 11.

[0027] ​The speed reduction assembly comprises a speed reduction disc 12 rotatably sleeved on the outer wall of the power shaft 1, the outer wall of the power shaft 1 is fixedly sleeved with a rotating sleeve 13 inside the speed reduction disc 12, and the outer wall of the rotating sleeve 13 is fixedly connected with stirring blades 14.

[0028] The speed reduction assembly further comprises a non-Newtonian fluid 15 filled in the speed reduction disc 12, the outer wall of the speed reduction disc 12 is fixedly connected with a feeding port 16, and the inner wall of the feeding port 16 is threadedly connected with a blocking plug.

[0029] The outer wall of the machine body 2 is fixedly connected with a plurality of heat dissipation fins 17, and the side wall of the machine body 2 is fixedly connected with a brake device 18.

[0030] Specifically, the machine body 2 can provide sufficient power source for the power shaft 1, the setting of the speed reduction assembly can improve the speed reduction effect of the engine in a pneumatic manner, and the phenomenon of flying car due to excessive gravity when downhill can be avoided. When downhill, the power shaft 1 rotates to drive the speed reduction cam 5 on the outer wall to rotate continuously, and then the operator can start the brake device 18 on the machine body 2, and the compressed gas is delivered into the speed reduction disc 3 from the air inlet 6 through the program set in it. Through the operation of the operator, the gas can drive the inflatable air bag 4 to expand, and then the circulating expansion and the friction force of the speed reduction cam 5 reduce the speed of the engine. It should be noted that the brake device 18 is already available, so it will not be described in detail. When the speed reduction cam 5 rotates, the outer wall continuously impacts the inflatable air bag 4, so that the gas in the inflatable air bag 4 continuously flows out of the air inlet 6. Since the air inlet 6 is provided with a gas guide cone 8, part of the airflow can be returned to the inflatable air bag 4 through the arc-shaped conical structure, so that the gas collides with each other, thereby reducing the flow rate of the gas. Further, through the cooperation of the gas groove 9, the buffer disc 10 and the air plate 11 opened in the gas guide cone 8, the flow rate of the outwardly impacting airflow is further reduced. When the speed is too high, the speed reduction assembly intervenes in braking, and the rotating sleeve 13 on the outer wall of the power shaft 1 drives the stirring blades 14 to rotate continuously in the speed reduction disc 12, and then performs shearing motion with the non-Newtonian fluid 15 filled in it. When the speed is slow, the non-Newtonian fluid 15 is a liquid, which does not affect rotation. When the speed exceeds the standard, the stirring speed is too fast, the stirring blades 14 rotate at high speed to increase the cohesive force in the non-Newtonian fluid 15, so that the speed is continuously reduced, thereby achieving the effect of reducing the speed of the power shaft 1. The heat dissipation fins 17 on the outer wall of the machine body 2 can achieve the effect of dissipating heat from the machine body 2 through the plurality of heat dissipation fins 17, thereby avoiding overheating of the engine due to long working time, and improving the service life of the engine.

[0031] The outer wall of the brake device 18 is fixedly connected with an exhaust pipe 19, and the end of the exhaust pipe 19 is fixedly connected with the end of the air inlet 6.

[0032] In particular, by means of the exhaust pipe 19 of the outer wall of the brake device 18, the compressed gas can be conveniently delivered from the air inlet 6 into the inside of the air bag 4.

[0033] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A device for preventing engine runaway comprising a power shaft (1), characterized in that: The end of the power shaft (1) is fixedly sleeved with an organism (2), and the outer wall of the power shaft (1) is provided with a speed reduction assembly; The speed reduction assembly comprises a speed reduction disc (3) rotatably sleeved on the outer wall of the power shaft (1), the side wall of the speed reduction disc (3) is fixedly connected with a filling air bag (4), the outer wall of the power shaft (1) is fixedly sleeved with a speed reduction cam (5) corresponding to the filling air bag (4), the inner side wall of the speed reduction cam (5) is fixedly connected with a convex ball, the outer wall of the filling air bag (4) is fixedly connected with an air inlet (6), the inner wall of the air inlet (6) is fixedly connected with a retainer (7), the inner side walls of a plurality of the retainers (7) are fixedly connected with air guide cones (8), and the outer wall of the power shaft (1) is provided with a speed reduction assembly.

2. A device for preventing engine runaway as claimed in claim 1 wherein: The inside of the air guide cone (8) is provided with an air groove (9), the outer wall of the air guide cone (8) is fixedly connected with a buffer disc (10), and the inner wall of the buffer disc (10) is fixedly connected with an air plate (11).

3. The device for preventing engine racing according to claim 1, characterized in that: The speed reduction assembly comprises a speed reduction disc (12) rotatably sleeved on the outer wall of the power shaft (1), the outer wall of the power shaft (1) is fixedly sleeved with a rotating sleeve (13) inside the speed reduction disc (12), and the outer wall of the rotating sleeve (13) is fixedly connected with stirring blades (14).

4. A device for preventing engine runaway as defined in claim 3, characterized in that: The speed reduction assembly further comprises a non-Newtonian fluid (15) filled in the speed reduction disc (12), the outer wall of the speed reduction disc (12) is fixedly connected with a feeding port (16), and the inner wall of the feeding port (16) is threadedly connected with a blocking plug.

5. The device for preventing engine racing according to claim 1, wherein: The outer wall of the organism (2) is fixedly connected with heat dissipation fins (17), the number of the heat dissipation fins (17) is several, and the side wall of the organism (2) is fixedly connected with a brake device (18).

6. A device for preventing engine runaway as defined in claim 5, characterized in that: The outer wall of the brake device (18) is fixedly connected with an exhaust pipe (19), and the end of the exhaust pipe (19) is fixedly connected with the end of the air inlet (6).

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