CN111577927A - Retarder cooling device - Google Patents

Abstract

The invention relates to a retarder cooling device, comprising a regulating valve and a driving part. The regulating valve includes a first valve body, a valve core and a valve stem, the valve stem is connected with the valve core, and the valve core is provided with a valve core hole. The first valve body is provided with an air passage, the valve core is rotatably arranged in the air passage, and one end of the air passage is used to communicate with the air storage cylinder. One end of the driving member is connected to the valve stem, and the driving member can drive the regulating valve to rotate, so as to adjust the air flow through the regulating valve. When the temperature of the retarder increases, the driving member drives the valve core to rotate. When the temperature of the retarder is higher than the preset temperature value, the valve core is rotated to a certain angle, so that the valve core hole is connected with the air flow channel, so that the high-pressure gas in the air storage cylinder can be sprayed to the retarder through the regulating valve, so as to prevent the retarder. The retarder is cooled to prolong the service life of the retarder and reduce the occurrence of vehicle fire accidents. When the temperature of the retarder decreases, the valve core closes the airflow passage under the action of the driving member, and the retarder cooling device stops working at this time.

Description

retarder cooling device

technical field

The invention relates to the technical field of retarders, in particular to a retarder cooling device.

Background technique

Eddy current retarder is an auxiliary braking system, which is installed between the vehicle drive axle and the gearbox, and realizes non-contact braking through the principle of electromagnetic induction. The eddy current retarder is generally composed of a stator, a rotor and a fixed bracket. During operation, the stator coil is energized to generate a magnetic field, and the rotor rotates and cuts the magnetic field lines generated by the stator, thereby generating a vortex-like induced current in the rotor disk. The stator applies an electromagnetic force to the rotor that prevents the rotor from rotating, resulting in a braking torque. At the same time, the eddy current circulates in the rotor disk. Under the action of the resistance heating effect, the kinetic energy of the vehicle is finally converted into heat energy through electromagnetic induction and resistance heating.

In order to reduce the temperature of the retarder, the traditional way is to dissipate the heat around the rotor through the fan blades. However, when the vehicle is going down a long slope or the retarder is working with a high current, it is easy to cause the temperature of the retarder to be too high, thereby shortening the service life of the stator. In addition, because the retarder and the oil seal end are relatively close together, it is easy to cause vehicle fire accidents, resulting in serious losses.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a retarder cooling device, which can reduce the temperature of the retarder, so as to prolong the service life of the retarder and reduce the occurrence of vehicle fire accidents.

A retarder cooling device, comprising:

A regulating valve, the regulating valve comprises a first valve body, a valve core and a valve stem, the valve stem is connected with the valve core, the valve core is provided with a valve core hole; the first valve body is provided with an air flow channel , the valve core is rotatably arranged in the air flow channel, and one end of the air flow channel is used to communicate with the air storage cylinder;

A driving part, the driving part is connected to the valve stem, and the driving part can drive the valve core to rotate, so as to adjust the air flow through the regulating valve.

The above retarder cooling device has at least the following advantages:

The above solution provides a retarder cooling device, one end of the driving member is connected to the valve stem, and when the temperature in the retarder increases, the driving member drives the valve core to rotate in the air flow channel. When the temperature in the retarder is higher than the preset temperature value, the valve core is rotated to a certain angle, so that the valve core hole is connected with the air flow channel, so that the high-pressure gas in the gas storage cylinder can be sprayed to the retarder through the regulating valve, thereby Cool the retarder to prolong the service life of the retarder and reduce the occurrence of vehicle fire accidents. As the temperature in the retarder continues to rise, the overlapping portion of the valve core hole and the airflow channel increases, and the amount of high-pressure gas passing through the regulating valve increases, so that the cooling effect of the retarder is more significant. When the temperature in the retarder decreases, the valve core closes the airflow passage under the action of the driving element, and the retarder cooling device stops working at this time.

The technical solution is further described below:

In one of the embodiments, the driving member is a bimetal scroll spring.

In one embodiment, the outer end of the bimetal scroll spring is provided with a first bending portion, and the inner end of the bimetal scroll spring is provided with a second bending portion; The side wall is provided with a first limiting groove, and the first bending portion is located in the first limiting groove; the end of the valve rod away from the valve core is provided with a second limiting groove, the second limiting groove is The bent portion is located in the second limiting groove.

In one embodiment, the valve body is provided with an accommodating cavity, a side wall of the accommodating cavity is provided with a first convex body and a second convex body, and the first convex body and the second convex body are disposed opposite to each other. ; After being heated and expanded, the outer ring of the bimetallic scroll spring can be pressed against the first convex body and the second convex body.

In one of the embodiments, the retarder cooling device further includes an air jet assembly, and the air jet assembly is disposed at the other end of the airflow channel.

In one embodiment, the regulating valve further includes a first joint and a second joint, the first joint is disposed at one end of the air flow channel, the first joint is used to connect the air storage cylinder, the A second joint is disposed at the other end of the airflow channel, and the second joint is connected to the air jet assembly.

In one embodiment, the air jet assembly includes a main body, a socket, an electromagnetic coil, a return spring, a third valve body and a pintle, the electromagnetic coil is electrically connected to the socket; the main body is provided with an air injection channel, One end of the air injection channel is the air injection end, the third valve body is movably arranged at the air injection end of the air injection channel, the pintle and the third valve body are connected; one end of the return spring in contact with the third valve body, and the other end of the return spring is in contact with the main body.

In one of the embodiments, the retarder cooling device further includes an alarm, the alarm is provided with a temperature threshold, and the alarm is electrically connected to the socket.

In one embodiment, the retarder cooling device further includes an electrical bridge sensor, the electrical bridge sensor includes a circuit composed of a thermistor, and the socket is electrically connected to the electrical bridge sensor.

In one embodiment, the retarder cooling device further includes a mounting bracket, one end of the mounting bracket is connected to the regulating valve, and the other end of the mounting bracket is used for connecting to the brake drum camshaft support.

Description of drawings

1 is a schematic structural diagram of a retarder cooling device according to an embodiment of the present invention;

2 is a schematic diagram of a structural explosion of a retarder cooling device according to an embodiment of the present invention;

3 is a schematic structural diagram of a regulating valve in a retarder cooling device according to an embodiment of the present invention.

Description of reference numbers:

10. Regulating valve, 11, valve body, 111, airflow channel, 112, accommodating cavity, 113, first convex body, 1131, first limit groove, 114, second convex body, 115, first valve body, 116 , Second valve body, 117, Fastener, 118, Seal ring, 119, Gasket, 12, Valve core, 121, Valve core hole, 13, Valve stem, 131, Second limit groove, 20, Drive , 21, the first bending part, 22, the second bending part, 23, the limiting part.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation disclosed below.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

Referring to FIGS. 1 and 2 , a retarder cooling device in an embodiment includes a regulating valve 10 and a driving member 20 . The regulating valve 10 includes a valve body 11 , a valve core 12 and a valve stem 13 , the valve stem 13 is connected with the valve core 12 , and the valve core 12 is provided with a valve core hole 121 . The valve body 11 is provided with an air flow channel 111 , the valve core 12 is rotatably disposed in the air flow channel 111 , and one end of the air flow channel 111 is used to communicate with the air storage cylinder. The driving member 20 is connected to the valve stem 13 , and the driving member 20 can drive the valve core 12 to rotate in the air passage 111 to adjust the air flow through the regulating valve 10 .

In the above retarder cooling device, the driving member 20 is connected to the valve stem 13 , and when the temperature in the retarder increases, the driving member 20 drives the valve core 12 to rotate in the airflow channel 111 . When the temperature in the retarder is higher than the preset temperature value, the valve core 12 is rotated to a certain angle, so that the valve core hole 121 is communicated with the airflow channel 111, so that the high-pressure gas in the gas storage cylinder can be sprayed to the retarder through the regulating valve 10. The retarder can be cooled down to prolong the service life of the retarder and reduce the occurrence of vehicle fire accidents. As the temperature in the retarder continues to increase, the overlapping portion of the valve core hole 121 and the airflow channel 111 increases, and the amount of high-pressure gas passing through the regulating valve 10 increases, so that the cooling effect of the retarder is more significant. When the temperature in the retarder decreases, the valve core 12 closes the airflow channel 111 under the action of the driving member 20, and the retarder cooling device stops working at this time.

Specifically, referring to FIGS. 1 and 2 , the regulating valve 10 further includes a sealing ring 118 and a gasket 119 . When the temperature in the retarder is lower than the preset temperature value, the driving member 20 drives the valve core 12 to rotate in the airflow channel 111, so that the valve core 12 is pressed against the side wall of the airflow channel 111, so that the valve core hole is 121 is not in communication with the airflow channel 111 . By arranging the sealing ring 118 and the gasket 119 at the position of the valve core hole 121, when the temperature in the retarder is lower than the preset temperature value, the sealing ring 118 and the gasket pressing against the side wall of the airflow channel 111 119 can improve the air tightness of the regulating valve 10 and prevent high pressure gas from being injected into the retarder.

In one embodiment, the above-mentioned driving member 20 includes a motor and a controller, and the controller is electrically connected to the motor. Specifically, the vehicle is provided with a temperature sensor, and the temperature sensor is electrically connected to the controller. The temperature sensor measures the temperature in the retarder. When the measured temperature value is higher than the preset temperature value, the controller controls the motor to rotate, and then drives the valve core 12 to rotate in the airflow channel 111 to adjust the flow rate through the regulating valve 10 air flow. It can be understood that when the temperature in the retarder is higher than the preset temperature value, the valve core 12 is rotated to a certain angle, so that the valve core hole 121 is communicated with the airflow channel 111, so that the high-pressure gas in the gas storage cylinder can be adjusted by adjusting The valve 10 is sprayed toward the retarder, thereby cooling the retarder, so as to prolong the service life of the retarder and reduce the occurrence of vehicle fire accidents. When the temperature in the retarder decreases, the valve core 12 closes the airflow channel 111 driven by the motor, and the retarder cooling device stops working at this time. Of course, in other embodiments, the driving member 20 may also be a high-pressure cylinder, and the high-pressure cylinder is electrically connected to the controller. When the temperature value measured by the temperature sensor is higher than the preset temperature value, the controller controls the high-pressure cylinder to start working, so that the high-pressure cylinder drives the valve core 12 to rotate in the airflow passage 111 , thereby adjusting the airflow through the regulating valve 10 .

In another embodiment, please refer to FIG. 1 and FIG. 2 , the driving member 20 is a bimetal scroll spring. Specifically, the outer end of the bimetal scroll spring is connected to the valve body 11 , and the inner end of the bimetal scroll spring is connected to the valve stem 13 . It can be understood that the inner end of the bimetal scroll spring refers to the end of the inner ring of the scroll spring, and the outer end of the bimetal scroll spring refers to the end of the outer ring of the scroll spring. The bimetal scroll spring includes two or more metals with suitable properties. When the temperature of the retarder changes, due to the different thermal expansion coefficients of different metals, the metal layer with a high thermal expansion coefficient will move to a metal layer with a low thermal expansion coefficient. Curved on one side. In this embodiment, when the retarder is in normal operation, due to the cooling effect of the fan, the temperature of the retarder will not exceed the preset temperature value, so the retarder cooling device does not work. As the temperature in the retarder gradually increases, the bimetal scroll spring expands and extends in the circumferential direction. Since the outer end of the bimetal scroll spring restricts the movement, the inner end of the bimetal scroll spring The valve core 12 is driven to rotate in the airflow channel 111 . When the temperature in the retarder rises to a certain value, under the action of the driving member 20, the valve core 12 rotates to a certain angle, the valve core hole 121 is connected with the airflow channel 111, and the high-pressure gas in the gas storage cylinder passes through the regulating valve 10 is sprayed to the retarder to cool down the retarder, so as to prolong the service life of the retarder and reduce the occurrence of vehicle fire accidents. When the temperature in the retarder decreases, under the action of the bimetallic scroll spring, the valve core 12 rotates and closes the airflow passage 111, and the retarder cooling device stops working at this time.

Further, please refer to FIGS. 1 to 3 , the outer end of the bimetal scroll spring is provided with a first bending portion 21 , and the inner end of the bimetal scroll spring is provided with a second bending portion 22 . The side wall of the valve body 11 is provided with a first limiting groove 1131 , and the first bending portion 21 is located in the first limiting groove 1131 . One end of the valve stem 13 away from the valve core 12 is provided with a second limiting groove 131 , and the second bending portion 22 is located in the second limiting groove 131 . By arranging the first bending part 21 in the first limiting groove 1131 and the second bending part 22 in the second limiting groove 131, the two ends of the bimetal scroll spring are respectively connected to the valve body 11 and the valve stem 13 , so that the bimetal scroll spring drives the valve core 12 to rotate in the air passage 111 to adjust the air flow through the regulating valve 10 . As the temperature in the retarder gradually increases, the bimetal scroll spring expands and extends in the circumferential direction. Since the outer end of the bimetal scroll spring restricts the movement, the inner end of the bimetal scroll spring The valve core 12 is driven to rotate in the airflow channel 111 . When the temperature in the retarder rises to a certain value, under the action of the driving member 20, the valve core 12 rotates to a certain angle, the valve core hole 121 is connected with the airflow channel 111, and the high-pressure gas in the gas storage cylinder passes through the regulating valve 10 is sprayed to the retarder to cool the retarder, so as to prolong the service life of the retarder and reduce the occurrence of vehicle fire accidents. When the temperature in the retarder decreases, the bimetal scroll spring retracts and drives the valve core 12 to rotate to close the airflow channel 111, and the retarder cooling device stops working at this time.

Specifically, please refer to FIG. 2 and FIG. 3 , the outer end of the bimetal scroll spring is provided with a limiting portion 23 , and the size of the limiting portion 23 is larger than that of the first limiting groove 1131 . When the temperature in the retarder decreases, the bimetallic scroll spring retracts and moves toward the side close to the valve stem 13. The limiter 23 can limit the moving distance of the outer end of the bimetallic scroll spring to avoid bimetallic scrolling. The sheet scroll spring slips out of the first limiting groove 1131 and affects the use of the retarder cooling device.

Further, please refer to FIG. 1 and FIG. 3 , the valve body 11 is provided with an accommodating cavity 112 , and the accommodating cavity 112 is used for placing the bimetal scroll spring. The side wall of the accommodating cavity 112 is provided with a first convex body 113 and a second convex body 114 , and the first convex body 113 and the second convex body 114 are disposed opposite to each other. The bimetal scroll spring is heated and expanded, and the outer ring of the bimetal scroll spring can press against the first convex body 113 and the second convex body 114 . As the temperature inside the retarder increases, the bimetallic scroll spring expands and expands in the circumferential direction. Since the first convex body 113 and the second convex body 114 are provided in the accommodating cavity 112, the outer ring of the bimetal scroll spring is pressed against the first convex body 113 and the second convex body 114, which is convenient for the bimetal scroll spring. The coil spring drives the valve core 12 to rotate in the airflow channel 111 to adjust the airflow through the regulating valve 10 . In this embodiment, the first limiting groove 1131 is disposed on the first convex body 113 or the second convex body 114 .

Specifically, please refer to FIG. 2 and FIG. 3 , the bottom of the accommodating cavity 112 is provided with a mounting hole, and the mounting hole is adapted to the size of the valve stem 13 . The valve stem 13 extends from the air flow passage 111 into the accommodating cavity 112 through the installation hole, so that the inner end of the bimetal scroll spring is easily set on the valve stem 13, so that the valve core 12 is driven in the airflow by the bimetal scroll spring. The passage 111 rotates in order to adjust the air flow through the regulating valve 10 .

In one embodiment, please refer to FIG. 2 and FIG. 3 , the valve body 11 includes a first valve body 115 and a second valve body 116 , and the first valve body 115 and the second valve body 116 are detachably connected to facilitate the installation of the valve core 12 and valve stem 13, which are also convenient for maintenance. Specifically, the first valve body 115 is provided with a first fastening hole, and the corresponding position of the second valve body 116 is provided with a second fastening hole. connected. In this embodiment, the fastener 117 includes a screw and a nut, the screw is inserted in the first fastening hole and the second fastening hole, and the first valve body 115 and the second valve body 116 are fastened by the nuts. Of course, in other embodiments, the valve body 11 may also be an integrally formed structure, which is not limited thereto.

Specifically, one end of the airflow channel 111 is an intake end, an air storage cylinder is disposed at the intake end of the airflow channel 111 , and the air storage cylinder communicates with the airflow channel 111 . The other end of the air flow channel 111 is an air outlet end, and the air jet assembly is disposed at the air outlet end of the air flow channel 111 . In this embodiment, the air inlet end of the airflow channel 111 is arranged on the first valve body 115 , the air outlet end of the airflow channel 111 is arranged on the second valve body 116 , and the inlet end and the outlet end of the airflow channel 111 are arranged opposite to each other.

Further, the retarder cooling device further includes an air jet assembly, and the air jet assembly is disposed at the other end of the airflow channel 111 . As the temperature of the retarder increases, the driving member 20 drives the valve core 12 to rotate in the airflow channel 111, so that the valve core hole 121 is connected with the airflow channel 111, so that the high-pressure gas in the gas storage cylinder can enter the jet through the regulating valve 10. within the component. The high-pressure gas is sprayed to the retarder through the jet assembly, which can cool the retarder, thereby effectively prolonging the service life of the retarder and reducing the occurrence of vehicle fire accidents.

Specifically, the regulating valve 10 further includes a first joint and a second joint, the first joint is disposed at one end of the airflow channel 111 , and the first joint is used to connect the air storage cylinder. The second joint is disposed at the other end of the airflow channel 111, and the second joint is connected to the air jet assembly. It can be understood that the first joint is arranged at the intake end of the airflow channel 111, that is, the first joint is arranged at the first valve body 115; the second joint is arranged at the outlet end of the airflow channel 111, that is, the second joint is arranged at the second valve body 115. Valve body 116 . The first joint facilitates the installation of the air storage cylinder on one end of the valve body 11 , and the second joint facilitates the installation of the air jet assembly on the other end of the valve body 11 . In this embodiment, the air inlet end and the air outlet end of the airflow channel 111 are provided with threads, and the first joint and the second joint are threadedly connected to the valve body 11 .

Further, the above-mentioned air jet assembly includes a body, a socket, an electromagnetic coil, a return spring, a third valve body and a pintle. The electromagnetic coil is electrically connected to the socket. When the socket is energized, the electromagnetic coil will generate electromagnetic attraction; when the socket is powered off, the electromagnetic coil loses electromagnetic attraction. The body is provided with a jetting channel, one end of the jetting channel is the jetting end, and the third valve body is movably arranged on the jetting end of the jetting channel. The shaft needle and the third valve body are connected. One end of the return spring is in contact with the third valve body, and the other end of the return spring is in contact with the body. It can be understood that the pintle is disposed at one end of the third valve body away from the return spring. When the temperature in the retarder is higher than the preset temperature value, the socket is energized, and current flows through the electromagnetic coil, so the electromagnetic coil will generate electromagnetic attraction. The electromagnetic suction force can overcome the elastic force of the return spring and attract the third valve body, so that the third valve body and the pintle move in the air injection channel to the end close to the electromagnetic coil, so that the air injection channel can be opened. The high-pressure gas in the air storage cylinder enters the jet assembly through the regulating valve 10, and is jetted from the jet channel to the retarder, thereby cooling the retarder, prolonging the service life of the retarder, and reducing the occurrence of vehicle fire accidents. When the temperature in the retarder is lower than the preset temperature value, the socket is powered off, and the electromagnetic coil loses the electromagnetic attraction force. At one end, the air jet channel is closed at this time, and the retarder cooling device stops working.

In one embodiment, the retarder cooling device further includes an alarm, the alarm is provided with a temperature threshold, and the alarm is electrically connected to the socket. When the temperature of the retarder rises to the temperature threshold, the socket is energized, and the electromagnetic coil generates electromagnetic attraction. The electromagnetic suction force can attract the third valve body, so that the third valve body moves toward the end close to the electromagnetic coil, so as to open the air injection channel. The high-pressure gas in the gas storage tank can enter the air jet channel through the regulating valve 10 and spray to the retarder, thereby reducing the temperature of the retarder, prolonging the service life of the retarder, and reducing the occurrence of vehicle fire accidents. When the temperature in the retarder is lower than the preset temperature value, the socket is powered off, and the electromagnetic coil loses the electromagnetic attraction force. Under the action of the return spring, the third valve body moves to the end away from the electromagnetic coil, at this time, the air jet channel is closed, and the retarder cooling device stops working.

In another embodiment, the retarder cooling device further includes a bridge sensor. The bridge sensor includes a circuit composed of a thermistor, and the socket is electrically connected to the bridge sensor. When the temperature of the retarder increases, the thermistor in the bridge circuit is affected, the balance of the bridge circuit is destroyed, and there is current output in the circuit. Since the socket is electrically connected with the thermistor bridge circuit, the socket is in an energized state at this time, and the electromagnetic coil is energized to generate electromagnetic suction. The third valve body is sucked by the electromagnetic suction force, and the third valve body is moved toward the electromagnetic coil, so as to open the air injection channel. The high-pressure gas in the gas storage tank can enter the air jet channel through the regulating valve 10 and spray to the retarder, thereby reducing the temperature of the retarder, prolonging the service life of the retarder, and reducing the occurrence of vehicle fire accidents. When the temperature of the retarder decreases, the bridge circuit is rebalanced, there is no current output in this circuit, the socket is in a power-off state at this time, and the electromagnetic coil has no electromagnetic attraction. Under the action of the return spring, the third valve body moves to the end away from the electromagnetic coil to close the air jet passage, and the retarder cooling device stops cooling.

Further, the retarder cooling device further includes a mounting frame. One end of the mounting bracket is connected with the regulating valve 10, and the other end of the mounting bracket is used for connecting the brake drum camshaft support. Specifically, one end of the mounting bracket is connected to the valve body 11 of the regulating valve 10 . The adjusting valve 10 is easily installed on the brake drum camshaft support through the mounting bracket, thereby improving the stability of the adjusting valve 10 .

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. a retarder cooling device, is characterized in that, comprises: A regulating valve, the regulating valve comprises a valve body, a valve core and a valve stem, the valve stem is connected with the valve core, the valve core is provided with a valve core hole; the valve body is provided with an air flow channel, and the valve The core is rotatably arranged in the air flow channel, and one end of the air flow channel is used to communicate with the air storage cylinder; A driving part, the driving part is connected to the valve stem, and the driving part can drive the valve core to rotate, so as to adjust the air flow through the regulating valve. 2 . The retarder cooling device according to claim 1 , wherein the driving member is a bimetal scroll spring. 3 . 3. The retarder cooling device according to claim 2, wherein the outer end of the bimetal scroll spring is provided with a first bending portion, and the inner end of the bimetal scroll spring is provided with a first bending portion. There is a second bending part; the side wall of the valve body is provided with a first limiting groove, and the first bending part is located in the first limiting groove; the end of the valve stem away from the valve core A second limiting groove is provided, and the second bending portion is located in the second limiting groove. 4. The retarder cooling device according to claim 2 or 3, wherein the valve body is provided with an accommodating cavity, and the side wall of the accommodating cavity is provided with a first convex body and a second convex body, so The first protruding body and the second protruding body are arranged opposite to each other; after being heated and expanded, the outer ring of the bimetal scroll spring can press against the first protruding body and the second protruding body. 5. The retarder cooling device according to any one of claims 1 to 3, characterized in that, further comprising an air jet assembly, and the air jet assembly is disposed at the other end of the airflow channel. 6 . The retarder cooling device according to claim 5 , wherein the regulating valve further comprises a first joint and a second joint, the first joint is arranged at one end of the air flow channel, and the first joint is 6 . A joint is used to connect the air storage cylinder, the second joint is arranged at the other end of the airflow channel, and the second joint is connected to the air jet assembly. 7 . The retarder cooling device according to claim 5 , wherein the air jet assembly comprises a body, a socket, an electromagnetic coil, a return spring, a third valve body and a pintle, and the electromagnetic coil and the The socket is electrically connected; the body is provided with a jetting channel, one end of the jetting channel is the jetting end, the third valve body is movably arranged on the jetting end of the jetting channel, the shaft pin, the third valve body The valve bodies are connected; one end of the return spring is abutted against the third valve body, and the other end of the return spring is abutted against the body. 8 . The retarder cooling device according to claim 7 , further comprising an alarm, the alarm is provided with a temperature threshold, and the alarm is electrically connected to the socket. 9 . 9 . The retarder cooling device according to claim 7 , further comprising an electric bridge sensor, wherein the electric bridge sensor comprises a circuit composed of a thermistor, and the socket is connected to the electric bridge sensor. 10 . The sensor is electrically connected. 10. The retarder cooling device according to any one of claims 1 to 3, further comprising an installation frame, one end of the installation frame is connected to the regulating valve, and the other end of the installation frame is used for For connecting the brake drum camshaft support.

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