Heat dissipation and dust removal assembly, clutch heat dissipation composite oil way and harvester

Abstract

The utility model discloses a heat dissipation dedusting assembly, clutch heat dissipation composite oil circuit and harvester, heat dissipation dedusting assembly includes heat dissipation fan and one-way valve, heat dissipation fan includes hydraulic motor and fan blade, fan blade is coaxially fixed on the drive shaft of hydraulic motor, and the one-way valve is fixed on the drive shaft of hydraulic motor. An oil inlet of the one-way valve and an oil inlet of the hydraulic motor converge to form an oil inlet connector, and an oil outlet of the one-way valve and an oil outlet of the hydraulic motor converge to form an oil outlet connector. In this way, hydraulic oil preferentially passes through the hydraulic motor to drive the hydraulic motor to drive the fan blades to rotate to blow dust on the radiator outer cover, when the radiator outer cover is seriously blocked by the dust and is difficult to dredge in a blowing mode, the load of the hydraulic motor is gradually increased at the moment, and when the load of the hydraulic motor is increased, the fan blades are driven to rotate. When the pressure difference is larger than the opening pressure of the one-way valve, the one-way valve is conducted at the moment, part of hydraulic oil flows through the one-way valve, and the rotating speed of the hydraulic motor is decreased at the moment.

Description

Technical Field

[0001] This utility model belongs to the field of harvesters, and particularly relates to a heat dissipation and dust removal component, a clutch heat dissipation composite oil circuit, and a harvester. Background Technology

[0002] When a harvester is in operation, its radiator cover is easily clogged with dust. Once clogged, airflow is obstructed, which affects the heat dissipation effect and may even cause the engine to overheat and alarm, affecting the normal operation of the harvester. At this time, it is usually necessary to manually clean the dust on the radiator cover, but this will affect the harvester's operating efficiency. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, one of the objectives of this utility model is to provide a heat dissipation and dust removal component with a simple structure that can automatically blow away the dust on the outer casing of the radiator.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A heat dissipation and dust removal component includes a cooling fan and a one-way valve. The cooling fan includes a hydraulic motor and fan blades. The fan blades are coaxially and fixedly mounted on the drive shaft of the hydraulic motor. The oil inlet of the one-way valve merges with the oil inlet of the hydraulic motor to form an oil inlet interface, and the oil outlet of the one-way valve merges with the oil outlet of the hydraulic motor to form an oil outlet interface.

[0005] The beneficial effects of this invention are as follows: Hydraulic oil is preferentially passed through the hydraulic motor to drive the fan blades and blow away dust from the radiator casing. When the dust on the radiator casing is severely clogged and difficult to clear by blowing, the load on the hydraulic motor gradually increases. As the load increases, the pressure difference between the inlet and outlet of the hydraulic motor increases. When the pressure difference exceeds the opening pressure of the check valve, the check valve opens, and some hydraulic oil flows through it, causing the speed of the hydraulic motor to decrease.

[0006] Based on the above solution, the heat dissipation and dust removal component of this utility model can be further improved as follows:

[0007] Furthermore, it also includes a speed sensor connected to the drive shaft of the hydraulic motor, which is used to monitor the speed of the hydraulic motor.

[0008] The beneficial effect of adopting the above-mentioned further solution is that the speed of the hydraulic motor can be monitored by the speed sensor, and the speed sensor can be electrically connected to the ECU of the harvester. If the speed of the hydraulic motor drops to a certain value, an early warning can be issued through the instrument panel of the harvester, informing the operator to clean the dust on the radiator cover manually.

[0009] The second objective of this invention is to provide a combined hydraulic clutch and heat dissipation / dust removal system to reduce costs.

[0010] To achieve the above objectives, the technical solution of this utility model is as follows: a clutch-heat dissipation composite oil circuit, comprising a hydraulic clutch assembly and a heat dissipation and dust removal assembly as described above, wherein the hydraulic clutch assembly and the heat dissipation and dust removal assembly are connected in series.

[0011] The beneficial effect of this utility model is that it allows hydraulic oil to flow continuously to the hydraulic clutch assembly through the heat dissipation and dust removal components, meaning that the addition of the heat dissipation and dust removal components does not affect the normal operation of the original hydraulic clutch assembly.

[0012] Based on the above solution, the clutch-cooling composite oil circuit of this utility model can be further improved as follows:

[0013] Furthermore, the hydraulic clutch assembly includes a hydraulic clutch element and a two-position three-way valve. The two-position three-way valve has an oil inlet, a working oil port, and a return oil port. The oil inlet of the two-position three-way valve is connected to the oil outlet, and the working oil port of the two-position three-way valve is connected to the oil port of the hydraulic clutch element.

[0014] The beneficial effect of adopting the above-mentioned further solution is that it enables the hydraulic clutch element to switch operating states under the control of a two-position three-way valve.

[0015] Furthermore, there are two hydraulic clutch components and two two-position three-way valves, and the two hydraulic clutch components and two two-position three-way valves correspond one-to-one. The working oil port of each two-position three-way valve is connected to the oil port of the corresponding hydraulic clutch component.

[0016] The beneficial effect of adopting the above-mentioned further solution is that it allows the two hydraulic clutch components to operate independently without interfering with each other.

[0017] Furthermore, the two hydraulic clutch components are a main clutch cylinder and a grain unloading clutch cylinder, respectively.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the transmission system and unloading box of the harvester are both controlled by the clutch cooling composite oil circuit.

[0019] Furthermore, it also includes a hydraulic oil tank and a hydraulic oil pump, wherein the oil inlet of the hydraulic oil pump is connected to the inside of the hydraulic oil tank, the oil outlet of the hydraulic oil pump is connected to the oil inlet, and the oil return port of the two-position three-way valve is connected to the inside of the hydraulic oil tank.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the hydraulic oil pump can draw oil from the hydraulic oil tank and pump it sequentially to the heat dissipation and dust removal components and the hydraulic clutch components, while the hydraulic oil can flow back to the hydraulic oil tank through the hydraulic clutch components.

[0021] Furthermore, it also includes an oil filter, which is located at the outlet of the hydraulic oil pump.

[0022] The beneficial effect of adopting the above-mentioned further solution is that it enables the oil filter to filter the hydraulic oil pumped by the hydraulic oil pump.

[0023] Furthermore, it also includes an overflow valve, through which the outlet of the hydraulic oil pump is connected to the interior of the hydraulic oil tank.

[0024] The beneficial effect of adopting the above-mentioned further solution is that when the hydraulic pressure at the outlet of the hydraulic oil pump is too high, the pressure can be relieved by the relief valve.

[0025] The third objective of this utility model is to provide a harvester that automatically blows away dust from the radiator cover.

[0026] To achieve the above objectives, the technical solution of this utility model is as follows: a harvester, including the clutch-heat dissipation composite oil circuit as described above.

[0027] The beneficial effect of this utility model is that the harvester has the function of automatically blowing away the dust on the radiator cover. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the heat dissipation and dust removal component described in Embodiment 1 of this utility model;

[0029] Figure 2 This is a schematic diagram of the clutch-heat dissipation composite oil circuit described in Embodiment 2 of this utility model;

[0030] Figure 3 This is a schematic diagram of the hydraulic clutch assembly in Embodiment 2 of this utility model.

[0031] In the diagram: 1. Heat dissipation and dust removal assembly; 11. Cooling fan; 111. Hydraulic motor; 112. Fan blade; 12. Check valve; 13. Speed ​​sensor; 14. Oil inlet port; 15. Oil outlet port; 2. Hydraulic clutch assembly; 21. Hydraulic clutch element; 22. Two-position three-way valve; 3. Hydraulic oil tank; 4. Hydraulic oil pump; 5. Oil filter; 6. Relief valve. Detailed Implementation

[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0033] Example 1

[0034] like Figure 1 As shown, this embodiment provides a heat dissipation and dust removal assembly, including a cooling fan 11 and a one-way valve 12. The cooling fan 11 includes a hydraulic motor 111 and a fan blade 112. The fan blade 112 is coaxially and fixedly mounted on the drive shaft of the hydraulic motor 111. The oil inlet of the one-way valve 12 merges with the oil inlet of the hydraulic motor 111 to form an oil inlet interface 14, and the oil outlet of the one-way valve 12 merges with the oil outlet of the hydraulic motor 111 to form an oil outlet interface 15. The opening pressure of the check valve described in this embodiment is determined by needs. A check valve with an opening pressure that meets the requirements can be selected. This heat dissipation and dust removal component allows hydraulic oil to preferentially pass through the hydraulic motor to drive the fan blades to rotate and blow away the dust on the radiator cover. When the dust on the radiator cover is so severe that it is difficult to clear by blowing, the load on the hydraulic motor will gradually increase. When the load on the hydraulic motor increases, the pressure difference between its inlet and outlet will increase. When the pressure difference is greater than the opening pressure of the check valve, the check valve will open, and some hydraulic oil will flow through the check valve. At this time, the speed of the hydraulic motor will decrease.

[0035] The heat dissipation and dust removal assembly also includes a speed sensor 13, which is connected to the drive shaft of the hydraulic motor 111 to monitor the speed of the hydraulic motor 111. The speed sensor can be an encoder, coaxially mounted on the drive shaft of the hydraulic motor, with its stator connected to the housing of the hydraulic motor and its rotor connected to the drive shaft. This allows the speed sensor to monitor the speed of the hydraulic motor, and the sensor can be electrically connected to the harvester's ECU (engine control unit). If the hydraulic motor speed drops to a certain value (which can be a preset value), a warning can be issued via the harvester's dashboard, informing the operator to manually clean the dust from the radiator cover.

[0036] In this embodiment, the cooling fan is located inside the radiator casing, and its air outlet direction is towards the radiator casing. This can accelerate the heat dissipation of the radiator. However, when the radiator casing is blocked by dust and cannot be blown out, the load on the cooling fan increases, causing internal pressure buildup. This results in a gradual increase in the pressure difference between the oil inlet and outlet. Once the pressure difference exceeds the opening pressure of the check valve, the check valve will be in the open state, and the speed of the hydraulic motor will further decrease.

[0037] Example 2

[0038] like Figure 2 As shown, this embodiment provides a clutch-heat dissipation composite oil circuit, including a hydraulic clutch assembly 2 and a heat dissipation and dust removal assembly 1 as described in Embodiment 1. The hydraulic clutch assembly 2 and the heat dissipation and dust removal assembly 1 are connected in series, so that hydraulic oil can flow continuously to the hydraulic clutch assembly through the heat dissipation and dust removal assembly. That is, after adding the heat dissipation and dust removal assembly, the normal operation of the original hydraulic clutch assembly is not affected.

[0039] The hydraulic clutch assembly 2 includes a hydraulic clutch element 21 and a two-position three-way valve 22. The two-position three-way valve 22 has an oil inlet, a working oil port, and an oil return port. The oil inlet of the two-position three-way valve 22 is connected to the oil outlet 15, and the working oil port of the two-position three-way valve 22 is connected to the oil port of the hydraulic clutch element 21. This allows the hydraulic clutch element to switch operating states under the control of the two-position three-way valve.

[0040] Preferred, such as Figure 2 and Figure 3 As shown, there are two hydraulic clutch elements 21 and two two-position three-way valves 22, and the two hydraulic clutch elements 21 and the two two-position three-way valves 22 correspond one to one. The working oil port of each two-position three-way valve 22 is connected to the oil port of the corresponding hydraulic clutch element 21, so that the two hydraulic clutch elements can operate independently without interfering with each other.

[0041] Specifically, the two hydraulic clutch components 21 are the main clutch cylinder and the unloading clutch cylinder, so that the transmission system and unloading box of the harvester are both controlled by the clutch cooling composite oil circuit.

[0042] in, Figure 3 In the diagram, 'a' represents the inlet port of the two-position three-way valve, 'b' represents the working port of the two-position three-way valve, and 'c' represents the return port of the two-position three-way valve.

[0043] like Figure 2As shown, the clutch cooling composite oil circuit also includes a hydraulic oil tank 3 and a hydraulic oil pump 4. The oil inlet of the hydraulic oil pump 4 is connected to the inside of the hydraulic oil tank 3, the oil outlet of the hydraulic oil pump 4 is connected to the oil inlet 14, and the oil return port of the two-position three-way valve 22 is connected to the inside of the hydraulic oil tank 3. This allows the hydraulic oil pump to draw oil from the hydraulic oil tank and pump it sequentially to the cooling and dust removal component 1 and the hydraulic clutch component 2, while the hydraulic oil can flow back to the hydraulic oil tank through the hydraulic clutch component.

[0044] like Figure 2 As shown, the clutch cooling composite oil circuit also includes an oil filter 5, which is located at the oil outlet of the hydraulic oil pump 4, so that the oil filter can filter the hydraulic oil pumped by the hydraulic oil pump.

[0045] like Figure 2 As shown, the clutch cooling composite oil circuit also includes an overflow valve 6. The oil outlet of the hydraulic oil pump 4 is connected to the inside of the hydraulic oil tank 3 through the overflow valve 6. This allows the overflow valve to release pressure when the hydraulic pressure at the oil outlet of the hydraulic oil pump is too high (thus preventing the entire clutch cooling composite oil circuit from malfunctioning due to excessive oil pressure).

[0046] In this embodiment, the connection relationship between the hydraulic clutch assembly 2, the hydraulic oil tank 3, and the hydraulic oil pump 4 can be understood as existing technology. The core point of this embodiment is to connect the heat dissipation and dust removal assembly in series upstream of the hydraulic clutch assembly 2, so that the heat dissipation and dust removal assembly will not affect the normal operation of the hydraulic clutch assembly.

[0047] In this embodiment, the oil inlets of the two two-position three-way valves are connected to the oil outlet 15, and the oil return ports of the two two-position three-way valves merge and connect to the inside of the hydraulic oil tank.

[0048] Example 3

[0049] This embodiment provides a harvester, including the clutch-cooling composite oil circuit as described in Embodiment 2. The harvester has the function of automatically blowing away the dust on the radiator cover. An alarm device (such as an alarm light or buzzer, etc.) that is electrically connected to the ECU can be installed on the instrument panel of the harvester provided in this embodiment. When the speed of the hydraulic motor drops to below a preset value (which can be preset in the ECU), it can be considered that the radiator cover is blocked and needs to be manually cleared.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A heat dissipating dust removing assembly, characterized in that, The device includes a cooling fan (11) and a one-way valve (12). The cooling fan (11) includes a hydraulic motor (111) and a fan blade (112). The fan blade (112) is coaxially and fixedly mounted on the drive shaft of the hydraulic motor (111). The oil inlet of the one-way valve (12) merges with the oil inlet of the hydraulic motor (111) to form an oil inlet interface (14). The oil outlet of the one-way valve (12) merges with the oil outlet of the hydraulic motor (111) to form an oil outlet interface (15).

2. The heat dissipation and dust removal assembly according to claim 1, characterized in that, It also includes a speed sensor (13) connected to the drive shaft of the hydraulic motor (111) for monitoring the speed of the hydraulic motor (111).

3. A clutch-cooling composite oil circuit, characterized in that, It includes a hydraulic clutch assembly (2) and a heat dissipation and dust removal assembly as described in claim 1 or 2, wherein the hydraulic clutch assembly (2) and the heat dissipation and dust removal assembly are connected in series.

4. The clutch-cooling composite oil circuit according to claim 3, characterized in that, The hydraulic clutch assembly (2) includes a hydraulic clutch element (21) and a two-position three-way valve (22). The two-position three-way valve (22) has an oil inlet, a working oil port and an oil return port. The oil inlet of the two-position three-way valve (22) is connected to the oil outlet (15), and the working oil port of the two-position three-way valve (22) is connected to the oil port of the hydraulic clutch element (21).

5. The clutch-cooling composite oil circuit according to claim 4, characterized in that, Two hydraulic clutch elements (21) and two two-position three-way valves (22) are provided, and the two hydraulic clutch elements (21) and the two two-position three-way valves (22) correspond one to one. The working oil port of each two-position three-way valve (22) is connected to the oil port of the corresponding hydraulic clutch element (21).

6. The clutch-cooling composite oil circuit according to claim 5, characterized in that, The two hydraulic clutch components (21) are the main clutch cylinder and the unloading clutch cylinder, respectively.

7. The clutch-cooling composite oil circuit according to claim 4, characterized in that, It also includes a hydraulic oil tank (3) and a hydraulic oil pump (4), the oil inlet of the hydraulic oil pump (4) is connected to the inside of the hydraulic oil tank (3), the oil outlet of the hydraulic oil pump (4) is connected to the oil inlet (14), and the oil return port of the two-position three-way valve (22) is connected to the inside of the hydraulic oil tank (3).

8. The clutch-cooling composite oil circuit according to claim 7, characterized in that, It also includes an oil filter (5), which is located at the outlet of the hydraulic oil pump (4).

9. The clutch-cooling composite oil circuit according to claim 7, characterized in that, It also includes an overflow valve (6), through which the outlet of the hydraulic oil pump (4) is connected to the inside of the hydraulic oil tank (3).

10. A harvester, characterized in that, Includes the clutch cooling composite oil circuit as described in any one of claims 3-9.

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