Heat dissipation structure of rotary tiller

Abstract

The present invention provides a heat dissipation structure of a rotary tiller, which includes a rotary tiller body, a heat dissipation pipe, a heat dissipation pipe on-off control part, a temperature sensor and a controller; the air inlet of the heat dissipation pipe is communicated with the space surrounded by the hood of the rotary tiller body, and the air outlet of the heat dissipation pipe is communicated with the exhaust tail pipe of the rotary tiller body; the heat dissipation pipe on-off control part is arranged in the heat dissipation pipe to control the on-off of the heat dissipation pipe; the temperature sensor is arranged on the hood of the rotary tiller body, and the detection probe of the temperature sensor is located in the space surrounded by the hood; the controller is electrically connected to the temperature sensor and the heat dissipation pipe on-off control part respectively, and the controller is used to control the operation of the heat dissipation pipe on-off control part according to the detection signal of the temperature sensor. Compared with the prior art, the heat dissipation structure of the rotary tiller provided by the present invention can avoid the accumulation of hot air in the hood and improve the heat dissipation effect.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a heat dissipation structure of a rotary tiller. Background Art

[0002] A rotary tiller is a tilling machine that is used in conjunction with a tractor to complete ploughing and harrowing operations. It has been widely used because of its strong soil crushing ability and flat surface after ploughing. Most of the existing traditional rotary tillers are crawler-type rotary tillers. Since the crawler has a large contact area with the ground and low pressure, it has better permeability in shallow mud paddy fields.

[0003] In order to protect the internal components of the rotary tiller and ensure the stable operation of each component, a hood is usually installed on the rotary tiller to protect the components. However, the rotary tiller usually runs at full load and high speed during use, which causes the machine to heat up seriously. Due to the obstruction of the hood, hot air accumulates in the hood, and the heat cannot be well dissipated, resulting in the temperature of the whole machine being too high. Especially in the hot summer, the problem of the whole machine being too high is particularly obvious, which seriously affects the normal work of the operator and brings great inconvenience to the operator. Summary of the invention

[0004] Aiming at the technical problem in the prior art that hot air is easily accumulated in the hood and cannot be well dissipated, resulting in excessively high temperature of the whole machine, the present invention provides a heat dissipation structure of a rotary tiller that can effectively prevent hot air from accumulating in the hood, reduce the temperature of the whole machine, and improve the use environment.

[0005] A heat dissipation structure of a rotary tiller, comprising a rotary tiller body, a heat dissipation pipe, a heat dissipation pipe on-off control component, a temperature sensor and a controller;

[0006] The air inlet of the heat dissipation pipe is communicated with the space enclosed by the hood of the rotary tiller body, and the air outlet of the heat dissipation pipe is communicated with the exhaust tail pipe of the rotary tiller body;

[0007] The heat dissipation pipe on-off control component is arranged in the heat dissipation pipe, and the heat dissipation pipe on-off control component is used to control the on-off between the air inlet and the air outlet;

[0008] The temperature sensor is arranged on the hood of the rotary tiller body, and the detection probe of the temperature sensor is located in the space enclosed by the hood of the rotary tiller body;

[0009] The controller is electrically connected to the temperature sensor and the heat pipe on-off control component respectively, and is used to control the operation of the heat pipe on-off control component according to the detection signal of the temperature sensor.

[0010] Preferably, the heat dissipation pipe includes a first pipeline, a second pipeline and a third pipeline, the first pipeline is connected to the hood of the rotary tiller body, the third pipeline is connected to the exhaust tail pipe of the rotary tiller body, the two ends of the second pipeline are respectively connected to the first pipeline and the third pipeline, and the heat dissipation pipe on-off control component is installed on the second pipeline.

[0011] Preferably, the third pipeline is arranged around the exhaust tail pipe of the rotary tiller body.

[0012] Preferably, the third pipeline is installed at the rear part of the exhaust tail pipe of the rotary tiller body.

[0013] Preferably, the exhaust tail pipe of the rotary tiller body comprises an inner pipe wall, a connecting pipe wall and an outer pipe wall which are connected in sequence, and from the direction close to the connecting pipe wall to the direction away from the connecting pipe wall, the outer pipe wall is inclined toward the inside;

[0014] The third pipeline includes a first tube wall, a second tube wall and a third tube wall, the first tube wall is connected to the connecting tube wall and is located on a side close to the inner tube wall, the second tube wall is connected to an end of the first tube wall away from the connecting tube wall, the third tube wall is connected to the second tube wall and is located on a side close to the outer tube wall, and the third tube wall is parallel to the outer tube wall and spaced apart to form the gas outlet;

[0015] The second pipeline is connected to the second pipe wall.

[0016] Preferably, the third tube wall includes a straight tube wall and an arc tube wall, the straight tube wall is connected to the second tube wall and is arranged parallel to and spaced from the outer tube wall, and the arc tube wall is connected to one end of the straight tube wall away from the second tube wall.

[0017] Preferably, the heat dissipation pipe on-off control component is a three-way valve.

[0018] Preferably, the heat dissipation pipe on-off control component is a one-way three-way valve.

[0019] Preferably, the controller is a PID controller.

[0020] Preferably, the air inlet of the heat dissipation pipe is located near the engine of the rotary tiller body.

[0021] Compared with the prior art, the heat dissipation structure of the rotary tiller provided by the present invention includes a rotary tiller body, a heat dissipation pipe, a heat dissipation pipe on-off control part, a temperature sensor and a controller; the air inlet of the heat dissipation pipe is connected to the space surrounded by the hood of the rotary tiller body, and the air outlet of the heat dissipation pipe is connected to the exhaust tail pipe of the rotary tiller body; the heat dissipation pipe on-off control part is arranged in the heat dissipation pipe, and the heat dissipation pipe on-off control part is used to control the on-off between the air inlet and the air outlet; the temperature sensor is arranged on the hood of the rotary tiller body, and the detection probe of the temperature sensor is located in the space surrounded by the hood of the rotary tiller body; the controller is electrically connected to the temperature sensor and the heat dissipation pipe on-off control part respectively, and the controller is used to control the operation of the heat dissipation pipe on-off control part according to the detection signal of the temperature sensor. The heat dissipation structure of the rotary tiller can effectively prevent the accumulation of hot air in the hood, improve the heat dissipation effect, reduce the temperature of the whole machine, and improve the use environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic structural diagram of a heat dissipation structure of a rotary tiller provided in an embodiment. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] It should be noted that when an element is referred to as being "fixed on", "installed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0027] The present invention provides a heat dissipation structure of a rotary tiller, which includes a rotary tiller body, a heat dissipation pipe, a heat dissipation pipe on-off control part, a temperature sensor and a controller; the air inlet of the heat dissipation pipe is connected to the space surrounded by the hood of the rotary tiller body, and the air outlet of the heat dissipation pipe is connected to the exhaust tail pipe of the rotary tiller body; the heat dissipation pipe on-off control part is arranged in the heat dissipation pipe, and the heat dissipation pipe on-off control part is used to control the on-off between the air inlet and the air outlet; the temperature sensor is arranged on the hood of the rotary tiller body, and the detection probe of the temperature sensor is located in the space surrounded by the hood; the controller is electrically connected to the temperature sensor and the heat dissipation pipe on-off control part respectively, and the controller is used to control the operation of the heat dissipation pipe on-off control part according to the detection signal of the temperature sensor. The heat dissipation structure of the rotary tiller can prevent hot air from accumulating in the hood and reduce the temperature of the whole machine.

[0028] Please refer to Figure 1 The present embodiment provides a heat dissipation structure 100 of a rotary tiller, which is used to guide and dissipate the hot air accumulated in the hood of the rotary tiller.

[0029] The heat dissipation structure 100 of the rotary tiller includes a rotary tiller body 10, a heat dissipation pipe 20, a heat dissipation pipe on-off control part 30, a temperature sensor 40 and a controller 50. The air inlet 24 of the heat dissipation pipe 20 is connected to the space surrounded by the hood 11 of the rotary tiller body 10, and the air outlet 25 of the heat dissipation pipe 20 is connected to the exhaust tail pipe 12 of the rotary tiller body 10. It should be noted that the air outlet 25 is connected to the exhaust tail pipe 12, which means that the air outlet 25 is connected to the exhaust passage of the exhaust tail pipe 12. When the exhaust gas flows through the exhaust tail pipe 12 quickly, negative pressure can be generated to bring out the hot air in the heat dissipation pipe 20. The heat dissipation pipe on-off control part 30 is arranged in the heat dissipation pipe 20, and the heat dissipation pipe on-off control part 30 is used to control the on-off between the air inlet 24 and the air outlet 25. The temperature sensor 40 is arranged on the hood 11, and the detection probe of the temperature sensor 40 is located in the space surrounded by the hood 11. The controller 50 is electrically connected to the temperature sensor 40 and the heat pipe on-off control part 30 respectively, and the controller 50 is used to control the operation of the heat pipe on-off control part 30 according to the detection signal of the temperature sensor 40. The heat dissipation structure 100 of the rotary tiller can detect the temperature inside the hood 11 of the rotary tiller body 10 in real time through the temperature sensor 40. When the temperature is too high, the heat pipe on-off control part 30 can be controlled by the controller 50 to make the two ends of the heat pipe 20 conductive, so that the negative pressure generated by the high-speed exhaust gas flow in the exhaust tail pipe 12 of the rotary tiller body 10 provides a power source to guide the hot air in the hood 11 of the rotary tiller body 10 to flow out.

[0030] The controller 50, the temperature sensor 40 and the heat pipe on / off control member 30 can detect the real-time temperature in the hood 11 more timely and accurately, and realize heat dissipation more intelligently. In addition, the heat dissipation structure 100 of the rotary tiller has a simple structure, does not require an additional power source to drive heat dissipation, reduces the generation of its own heat, and also reduces costs.

[0031] Preferably, the heat dissipation pipe 20 includes a first pipe 21, a second pipe 22 and a third pipe 23, the first pipe 21 is connected to the engine cover 11, the third pipe 23 is connected to the exhaust tail pipe 12, the two ends of the second pipe 22 are respectively connected to the first pipe 21 and the third pipe 23, and the heat dissipation pipe on-off control member 30 is installed on the second pipe 22. Thus, the stability of the operation of the heat dissipation pipe on-off control member 30 can be effectively guaranteed.

[0032] Preferably, the third pipeline 23 is arranged around the exhaust tail pipe 12. That is, the third pipeline 23 is in an annular structure and surrounds the outside of the exhaust tail pipe 12, and the second pipeline 22 is connected to the bottom of the third pipeline 23. Thus, the connection stability between the heat dissipation pipe 20 and the exhaust tail pipe 12 can be effectively guaranteed, and the hot air in the hood 11 can be discharged more quickly, thereby better ensuring the cooling effect.

[0033] Preferably, the third pipeline 23 is installed at the rear of the exhaust tail pipe 12. This can better guide the hot air in the heat dissipation pipe 20 and further improve the cooling effect.

[0034] Preferably, the exhaust tail pipe 12 includes an inner pipe wall 121, a connecting pipe wall 122 and an outer pipe wall 123 which are connected in sequence, and the outer pipe wall 123 is inclined inwardly from the direction close to the connecting pipe wall 122 to the direction away from the connecting pipe wall 122. In other words, from the inner side to the outer side of the rotary tiller body 10, the outer pipe wall 123 is inclined inwardly, that is, the outer pipe wall 123 is an inwardly closing structure. The third pipeline 23 includes a first tube wall 231, a second tube wall 232 and a third tube wall 233, wherein the first tube wall 231 is connected to the connecting tube wall 122 and is located at a side close to the inner tube wall 121, the second tube wall 232 is connected to an end of the first tube wall 231 away from the connecting tube wall 122, the third tube wall 233 is connected to the second tube wall 232 and is located at a side close to the outer tube wall 123, and the third tube wall 233 and the outer tube wall 123 are arranged in parallel and spaced apart to enclose the air outlet 25, and the second pipeline 22 is connected to the second tube wall 232. Thus, the discharge of hot air in the heat dissipation pipe 20 can be better guided by the third tube wall 233 and the outer tube wall 123.

[0035] Preferably, the third tube wall 233 includes a straight tube wall 2331 and an arc tube wall 2332, wherein the straight tube wall 2331 is connected to the second tube wall 232 and is arranged parallel to and spaced from the outer tube wall 123, and the arc tube wall 2332 is connected to an end of the straight tube wall 2331 away from the second tube wall 232. Thus, the hot air can be better guided to flow outward through the arc tube wall 2332, thereby better ensuring the heat dissipation effect.

[0036] Preferably, the heat pipe on-off control component 30 is a three-way valve. More preferably, the heat pipe on-off control component 30 is a one-way three-way valve. This can further prevent the backflow of hot air and better ensure the heat dissipation effect. Specifically, the air inlet end of the heat pipe on-off control component 30 is located on a side close to the space enclosed by the hood 11, and the air outlet end of the heat pipe on-off control component 30 is located on a side close to the exhaust tail pipe 12. The other interface of the heat pipe on-off control component 30 can be externally connected to air or other components, so that the introduction of gas through the interface can achieve a larger flow rate of blowing, better improve the circulation rate of hot air, and further improve the heat dissipation effect.

[0037] Preferably, the controller 50 is a PID controller, thereby effectively improving reliability.

[0038] Preferably, the air inlet 24 is located near the engine of the rotary tiller body 10, so that the hot air can be discharged better and more directly.

[0039] The heat dissipation structure 100 of the rotary tiller uses exhaust gas as a power source to extract hot air from the hood 11, thereby reducing the temperature of the machine and improving the use environment. When the temperature sensor 40 detects that the temperature in the hood 11 is greater than a predetermined temperature, the controller 50 controls the three-way valve to open. The exhaust gas enters the exhaust tail pipe 12, and the wind speed and pressure of the exhaust gas are increased after passing through the air guide notch of the exhaust tail pipe 12. The high-speed flow of the exhaust gas passes through the exhaust tail pipe 12, so that the rear section of the exhaust tail pipe 12 generates negative pressure, so that the hot air in the hood 11 is guided and discharged from the rear of the exhaust tail pipe 12, thereby reducing the temperature of the machine.

[0040] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A heat dissipation structure of a rotary tiller, characterized in that: It includes a rotary tiller body, a heat dissipation pipe, a heat dissipation pipe on-off control component, a temperature sensor and a controller; The air inlet of the heat dissipation pipe is communicated with the space enclosed by the hood of the rotary tiller body, and the air outlet of the heat dissipation pipe is communicated with the exhaust tail pipe of the rotary tiller body; The heat dissipation pipe on-off control component is arranged in the heat dissipation pipe, and the heat dissipation pipe on-off control component is used to control the on-off between the air inlet and the air outlet; The temperature sensor is arranged on the hood of the rotary tiller body, and the detection probe of the temperature sensor is located in the space enclosed by the hood of the rotary tiller body; The controller is electrically connected to the temperature sensor and the heat pipe on-off control component respectively, and the controller is used to control the operation of the heat pipe on-off control component according to the detection signal of the temperature sensor; The heat dissipation pipe comprises a first pipe, a second pipe and a third pipe, the first pipe is connected to the hood of the rotary tiller body, the third pipe is connected to the exhaust tail pipe of the rotary tiller body, the two ends of the second pipe are respectively connected to the first pipe and the third pipe, and the heat dissipation pipe on-off control component is installed on the second pipe; The third pipeline is arranged around the exhaust tail pipe of the rotary tiller body; The third pipeline is installed at the rear of the exhaust tail pipe of the rotary tiller body; The exhaust tail pipe of the rotary tiller body comprises an inner pipe wall, a connecting pipe wall and an outer pipe wall which are connected in sequence, and the outer pipe wall is inclined inward from the direction close to the connecting pipe wall to the direction away from the connecting pipe wall; The third pipeline includes a first tube wall, a second tube wall and a third tube wall, the first tube wall is connected to the connecting tube wall and is located on a side close to the inner tube wall, the second tube wall is connected to an end of the first tube wall away from the connecting tube wall, the third tube wall is connected to the second tube wall and is located on a side close to the outer tube wall, and the third tube wall is parallel to the outer tube wall and spaced apart to form the gas outlet; The second pipeline is connected to the second pipe wall; The third tube wall includes a straight tube wall and an arc tube wall. The straight tube wall is connected to the second tube wall and is arranged parallel to and spaced from the outer tube wall. The arc tube wall is connected to one end of the straight tube wall away from the second tube wall.

2. The heat dissipation structure of the rotary tiller according to claim 1, characterized in that: The heat dissipation pipe on-off control component is a three-way valve.

3. The heat dissipation structure of the rotary tiller according to claim 2, characterized in that: The heat dissipation pipe on-off control component is a one-way three-way valve.

4. The heat dissipation structure of the rotary tiller according to claim 1, characterized in that: The controller is a PID controller.

5. The heat dissipation structure of the rotary tiller according to claim 1, characterized in that: The air inlet of the heat dissipation pipe is located near the engine of the rotary tiller body.

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