Intelligent heat dissipation compensation hydraulic system of tractor

Abstract

The utility model discloses an intelligent heat dissipation compensation hydraulic system of a tractor, relates to the technical field of agricultural machinery, and solves the problems that the oil temperature in the operation of the tractor is easily influenced by the environment temperature, the operation conformity, the operation mode and other conditions, and the optimal temperature range of oil is difficult to keep. The temperature sensor and the compensation heat dissipation pump are arranged, heat dissipation is started when the oil temperature is higher than a calibration value, heat dissipation is stopped when the oil temperature is lower than the calibration value, the oil temperature of efficient areas of a hydraulic system and a lubricating system is guaranteed, and stable operation of equipment is guaranteed; the oil outlet pipe of the compensation heat dissipation pump is connected with the lifting hydraulic pump, so that the oil absorption resistance of the lifting hydraulic pump is reduced. Therefore, the working efficiency and the service life of the hydraulic pump and the gearbox are improved, and the failure rate is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of agricultural machinery, especially to a tractor intelligent heat dissipation compensation hydraulic system. BACKGROUND

[0002] In modern tractors, the scheme of sharing oil by hydraulic system and transmission lubrication system of gearbox is adopted, and oil temperature is crucial for improving the working efficiency, service life and reducing failure rate of hydraulic pump and gearbox. However, in the operation of the tractor, the oil temperature is easily affected by environmental temperature, operation compliance, operation mode and other conditions, and it is difficult to maintain the optimal temperature range of the oil. SUMMARY

[0003] In view of the problem that the oil temperature in the operation of the tractor is easily affected by environmental temperature, operation compliance, operation mode and other conditions, and it is difficult to maintain the optimal temperature range of the oil, the utility model aims to provide a tractor intelligent heat dissipation compensation hydraulic system.

[0004] In order to achieve the above purpose, the utility model takes the technical scheme that:

[0005] A tractor intelligent heat dissipation compensation hydraulic system, comprising: a multi-way valve 1, a first oil pipe 2, a gearbox 3, a filter 4, a second oil pipe 5, a third oil pipe 6, a fourth oil pipe 7, a temperature sensor 8, a radiator 9, a plunger pump 10, a compensation heat dissipation pump 11, a fifth oil pipe 12, a reversing valve 13, a sixth oil pipe 14, a seventh oil pipe 15 and an eighth oil pipe 16, the gearbox 3 is provided with a first working area and a second working area which are not communicated with each other, the multi-way valve 1, the filter 4, the temperature sensor 8, the plunger pump 10 and the compensation heat dissipation pump 11 are all installed on the gearbox 3;

[0006] The first working area of the gearbox 3 and the liquid inlet of the compensation heat dissipation pump 11 are communicated through the third oil pipe 6, and the liquid outlet of the compensation heat dissipation pump 11 and the liquid inlet of the reversing valve 13 are communicated through the fifth oil pipe 12;

[0007] The second working area of the gearbox 3, the first liquid outlet of the reversing valve 13 and the liquid inlet of the plunger pump 10 are communicated through the fourth oil pipe 7, the liquid inlet of the filter 4 and the liquid outlet of the plunger pump 10 are communicated through the second oil pipe 5, and the liquid inlet of the multi-way valve 1 and the liquid outlet of the filter 4 are communicated through the first oil pipe 2;

[0008] The second working area of the gearbox 3 and the second liquid outlet of the reversing valve 13 are communicated through the eighth oil pipe 16, the second working area of the gearbox 3 and the liquid inlet of the radiator 9 are communicated through the seventh oil pipe 15, and the first working area of the gearbox 3 and the liquid outlet of the radiator 9 are communicated through the sixth oil pipe 14;

[0009] The temperature sensor 8 is used for detecting the temperature of the oil liquid in the gearbox 3, and the temperature sensor 8 and the reversing valve 13 are in signal communication with the control system, and the opening and closing of the reversing valve 13 is controlled by the control system to realize switching of the oil liquid discharged by the compensation heat dissipation pump 11 to flow into the fourth oil pipe 7 or the eighth oil pipe 16.

[0010] The tractor intelligent heat dissipation compensation hydraulic system, wherein the liquid inlet of the radiator 9 is located at the top of the front side of the radiator 9, and the liquid outlet of the radiator 9 is located at the top of the rear side of the radiator 9.

[0011] The tractor intelligent heat dissipation compensation hydraulic system, wherein the inside of the radiator 9 is provided with a plurality of first partitions arranged from front to back, the left and right side edges of each first partition are connected with the inner wall of the radiator 9, and the top side edge of each first partition is connected with the inner wall of the radiator 9.

[0012] The tractor intelligent heat dissipation compensation hydraulic system, wherein the plurality of first partitions are arranged between the liquid inlet of the radiator 9 and the liquid outlet of the radiator 9.

[0013] The tractor intelligent heat dissipation compensation hydraulic system, wherein the inside of the radiator 9 is provided with a plurality of first partitions arranged from front to back, the left and right side edges of each first partition are connected with the inner wall of the radiator 9, and the top side edge of each first partition is connected with the inner wall of the radiator 9.

[0014] The tractor intelligent heat dissipation compensation hydraulic system, wherein the top of the second working area of the gearbox 3 and the second liquid outlet of the reversing valve 13 are communicated through the eighth oil pipe 16.

[0015] The tractor intelligent heat dissipation compensation hydraulic system, wherein the first liquid outlet of the reversing valve 13 and the bottom of the second working area of the gearbox 3 are communicated.

[0016] The tractor intelligent heat dissipation compensation hydraulic system, wherein the bottom of the first working area of the gearbox 3 and the liquid inlet of the compensation heat dissipation pump 11 are communicated through the third oil pipe 6.

[0017] The tractor intelligent heat dissipation compensation hydraulic system, wherein the outer surface of the radiator 9 is provided with a plurality of heat dissipation rib plates for increasing the heat dissipation area.

[0018] The tractor intelligent heat dissipation compensation hydraulic system, wherein the outer surface of the radiator 9 is provided with a cooling device.

[0019] The tractor intelligent heat dissipation compensation hydraulic system, wherein the outer surface of the radiator 9 is provided with a cooling device.

[0020] (1) The utility model discloses a temperature sensor and compensation heat dissipation pump are equipped with, and the oil temperature is higher than the calibration value and opens heat dissipation, and the oil temperature is lower than the calibration value and closes heat dissipation, guarantee the oil temperature of the high -efficient area of hydraulic system and lubricating system, guarantee equipment steady operation.

[0021] (2) The utility model discloses a compensation heat dissipation pump oil outlet pipe links to each other with the lifting hydraulic pump, has reduced the oil suction resistance of lifting hydraulic pump, and thus has improved the working efficiency, service life of hydraulic pump and gearbox, reduced failure rate. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a tractor intelligent heat dissipation compensation hydraulic system's structure schematic diagram of the utility model.

[0023] Figure 2 It is a tractor intelligent heat dissipation compensation hydraulic system's first partial enlarged view from left to right of the utility model.

[0024] Figure 3 It is a tractor intelligent heat dissipation compensation hydraulic system's second partial enlarged view from left to right of the utility model.

[0025] Figure 4 It is a tractor intelligent heat dissipation compensation hydraulic system's third partial enlarged view from left to right of the utility model.

[0026] Figure 5 It is a tractor intelligent heat dissipation compensation hydraulic system's fourth partial enlarged view from left to right of the utility model.

[0027] In the drawing, 1, multipath valve, 2, first oil pipe, 3, gearbox, 4, filter, 5, second oil pipe, 6, third oil pipe, 7, fourth oil pipe, 8, temperature sensor, 9, radiator, 10, plunger pump, 11, compensation heat dissipation pump, 12, fifth oil pipe, 13, reversing valve, 14, sixth oil pipe, 15, seventh oil pipe, 16, eighth oil pipe. DETAILED DESCRIPTION

[0028] The utility model will be further explained in the following in conjunction with the drawing and specific embodiment, but not as the limitation of the utility model.

[0029] Please refer to Figures 1 to 5As shown, a tractor intelligent heat dissipation compensation hydraulic system is shown, which comprises: a multi-way valve 1, a first oil pipe 2, a gearbox 3, a filter 4, a second oil pipe 5, a third oil pipe 6, a fourth oil pipe 7, a temperature sensor 8, a radiator 9, a plunger pump 10, a compensation heat dissipation pump 11, a fifth oil pipe 12, a reversing valve 13, a sixth oil pipe 14, a seventh oil pipe 15 and an eighth oil pipe 16, the gearbox 3 is provided with a first working area and a second working area which are not communicated with each other, and the multi-way valve 1, the filter 4, the temperature sensor 8, the plunger pump 10 and the compensation heat dissipation pump 11 are all installed on the gearbox 3;

[0030] The first working area of the gearbox 3 and the liquid inlet of the compensation heat dissipation pump 11 are communicated through the third oil pipe 6, and the liquid outlet of the compensation heat dissipation pump 11 and the liquid inlet of the reversing valve 13 are communicated through the fifth oil pipe 12;

[0031] The second working area of the gearbox 3, the first liquid outlet of the reversing valve 13 and the liquid inlet of the plunger pump 10 are communicated through the fourth oil pipe 7, the liquid inlet of the filter 4 and the liquid outlet of the plunger pump 10 are communicated through the second oil pipe 5, and the liquid inlet of the multi-way valve 1 and the liquid outlet of the filter 4 are communicated through the first oil pipe 2;

[0032] The second working area of the gearbox 3 and the second liquid outlet of the reversing valve 13 are communicated through the eighth oil pipe 16, the second working area of the gearbox 3 and the liquid inlet of the radiator 9 are communicated through the seventh oil pipe 15, and the first working area of the gearbox 3 and the liquid outlet of the radiator 9 are communicated through the sixth oil pipe 14;

[0033] The temperature sensor 8 is used for detecting the temperature of the oil liquid in the gearbox 3, and the temperature sensor 8 and the reversing valve 13 are both communicated with the control system signal, and the opening and closing of the reversing valve 13 is controlled by the control system to realize switching the oil liquid discharged by the compensation heat dissipation pump 11 to flow into the fourth oil pipe 7 or the eighth oil pipe 16.

[0034] Further, in a preferred embodiment, the liquid inlet of the radiator 9 is located at the top end of the front side thereof, and the liquid outlet of the radiator 9 is located at the top end of the rear side thereof.

[0035] Further, in a preferred embodiment, it further comprises: a first partition plate, a plurality of first partition plates are arranged from front to back in the interior of the radiator 9, the left and right side edges of each first partition plate are connected with the inner wall of the radiator 9, and the top side edge of each first partition plate is connected with the inner wall of the radiator 9.

[0036] Further, in a preferred embodiment, the plurality of first partition plates are all arranged between the liquid inlet of the radiator 9 and the liquid outlet of the radiator 9.

[0037] Further, in a preferred embodiment, a second partition plate is arranged between any two adjacent first partition plates, and the left and right side edges of each second partition plate are connected to the inner wall of the radiator 9, and the bottom side edge of each second partition plate is connected to the inner wall of the radiator 9.

[0038] Further, in a preferred embodiment, the top of the second working area of the gearbox 3 and the second drain port of the reversing valve 13 are communicated through an eighth oil pipe 16.

[0039] Further, in a preferred embodiment, the first drain port of the reversing valve 13 and the bottom of the second working area of the gearbox 3 are communicated.

[0040] Further, in a preferred embodiment, the bottom of the first working area of the gearbox 3 and the inlet of the compensating radiator pump 11 are communicated through a third oil pipe 6.

[0041] Further, in a preferred embodiment, the outer surface of the radiator 9 is arranged with a plurality of heat dissipation ribs for increasing the heat dissipation area.

[0042] Further, in a preferred embodiment, the outer surface of the radiator 9 is provided with a cooling device.

[0043] The above is only a preferred embodiment of the present application, and does not limit the implementation manner and protection scope of the present application.

[0044] The present application has the following implementation manners on the basis of the above:

[0045] In a further embodiment of the present application, the multi-way valve 1, the filter 4, the temperature sensor 8, the plunger pump 10, and the compensating radiator pump 11 are sequentially installed on the gearbox 3; the first oil pipe 2 is connected to the multi-way valve 1 and the filter 4; the second oil pipe 5 is connected to the filter 4 and the plunger pump 10; the third oil pipe 6 is connected to the gearbox 3 and the compensating radiator pump 11; the fourth oil pipe 7 is connected to the gearbox 3, the reversing valve 13, and the plunger pump 10; the fifth oil pipe 12 is connected to the compensating radiator pump 11 and the reversing valve 13; the sixth oil pipe 14 is connected to the radiator 9 and the gearbox 3; the seventh oil pipe 15 is connected to the radiator 9 and the gearbox 3; and the eighth oil pipe 16 is connected to the gearbox 3 and the reversing valve 13.

[0046] In a further embodiment of the present application, the temperature sensor 8 and the compensating radiator pump 11 are provided, the radiator is started when the oil temperature is higher than the standard value, and the radiator is stopped when the oil temperature is lower than the standard value, so that the oil temperature of the efficient area of the hydraulic system and the lubricating system is ensured, and the equipment is stably operated; the compensating radiator pump outlet pipe is connected to the lifting hydraulic pump, and the oil suction resistance of the lifting hydraulic pump is reduced, so that the working efficiency, service life, and failure rate of the hydraulic pump and the gearbox are improved.

[0047] In further embodiments of the utility model, the normal working temperature of the tractor gearbox is usually between 90 to 100 degrees Celsius. In this temperature range, the gearbox has the best efficiency, which can ensure the normal working of the tractor under different working conditions. If the oil temperature of the gearbox exceeds the normal range for a long time, it may cause significant damage to the gearbox. When the oil temperature reaches 143 DEG C, the gearbox oil is likely to lose its lubricating properties, which will cause the internal components of the gearbox to malfunction due to frictional overheating.

[0048] In further embodiments of the utility model, when the temperature sensor 8 measures that the oil temperature in the gearbox 3 is lower than the calibration value, the reversing valve 13 closes the eighth oil pipe 16 oil circuit, at this time the compensation heat pump 11 absorbs oil from the third oil pipe 6, the oil is discharged from the fifth oil pipe 12 to the fourth oil pipe 7, the plunger pump 10 absorbs oil from the fourth oil pipe 7, and the oil is discharged from the second oil pipe 5 to the filter 4, the first oil pipe 2 to the multi-way valve 1, which can output power externally.

[0049] In further embodiments of the utility model, when the temperature sensor 8 measures that the oil temperature in the gearbox 3 is higher than the calibration value, the reversing valve 13 closes the fourth oil pipe 7 oil circuit, at this time the compensation heat pump 11 absorbs oil from the third oil pipe 6, the oil is discharged from the fifth oil pipe 12 to the eighth oil pipe 16, the seventh oil pipe 15, the radiator 9, and then returns to the gearbox 3 through the sixth oil pipe 14 to complete heat dissipation. Such adjustment can ensure that the oil temperature is within the optimal working range, improve the working efficiency, service life and reduce the failure rate of the hydraulic pump and the gearbox.

[0050] In further embodiments of the utility model, the calibration value of the oil temperature in the gearbox 3 in the application is 100 degrees to 135 degrees, and the preferred range is 105 degrees to 115 degrees.

[0051] In further embodiments of the utility model, the inlet of the radiator 9 is located at the top of the front side, and the outlet of the radiator 9 is located at the top of the rear side, and a plurality of first partitions and a plurality of second partitions are arranged inside the radiator 9, the plurality of first partitions and the plurality of second partitions are arranged alternately to divide the inside of the radiator 9 into an S-shaped one-way flow path, which is communicated with the inlet and the outlet of the radiator 9 respectively, to avoid the accumulation of oil inside the radiator 9, and at the same time, the travel path of the oil is extended, and the heat dissipation effect is improved.

[0052] In further embodiments of the utility model, the inlet of the radiator 9 is located at the top of the front side, and the outlet of the radiator 9 is located at the top of the rear side, and only a plurality of first partitions are arranged inside the radiator 9, the accumulated oil between the plurality of first partitions is mixed with the newly flowing oil to exchange heat, which avoids the influence of too low temperature on the normal working of the tractor gearbox.

[0053] In a further embodiment of the utility model, the liquid inlet of the radiator 9 is located at the top, middle or bottom of the front side, and the liquid outlet of the radiator 9 is located at the top, middle or bottom of the back side, and the internal baffle structure is arranged to improve the walking path and the heat dissipation effect, and the baffle structure can be designed as S-shaped, spiral-shaped or other linear or arc-shaped and S-shaped structure and spiral-shaped structure.

[0054] In a further embodiment of the utility model, the top of the second working area of the gearbox 3 and the second liquid outlet of the reversing valve 13 are communicated through the eighth oil pipe 16, so as to ensure the stable injection of oil in the second working area of the gearbox 3.

[0055] In a further embodiment of the utility model, the first liquid outlet of the reversing valve 13 and the bottom of the second working area of the gearbox 3 are communicated, so as to avoid the accumulation of high-temperature oil in the second working area of the gearbox 3.

[0056] In a further embodiment of the utility model, the bottom of the first working area of the gearbox 3 and the liquid inlet of the compensating radiator pump 11 are communicated through the third oil pipe 6, so as to avoid the accumulation of high-temperature oil in the first working area of the gearbox 3.

[0057] In a further embodiment of the utility model, the outer surface of the radiator 9 is arranged with a plurality of heat dissipation ribs for increasing the heat dissipation area, and the plurality of heat dissipation ribs can adopt a coaxial arrangement of annular structures with the inner diameter increasing from inside to outside, or adopt a long strip-shaped structure arranged from top to bottom or from left to right.

[0058] In a further embodiment of the utility model, the outer surface of the radiator 9 is provided with a cooling device, which can be a fan or a water cooling device, to improve the heat dissipation effect of the radiator 9.

[0059] The above is only the preferred embodiment of the utility model, and is not intended to limit the implementation and protection scope of the utility model. For those skilled in the art, it should be realized that any equivalent replacement and obvious changes made according to the content of the utility model specification and drawings should be included in the protection scope of the utility model.

Claims

1. A tractor intelligent heat dissipation compensation hydraulic system, characterized in that: include: A multi-way valve (1), a first oil pipe (2), a gearbox (3), a filter (4), a second oil pipe (5), a third oil pipe (6), a fourth oil pipe (7), a temperature sensor (8), a radiator (9), a plunger pump (10), a compensating heat dissipation pump (11), a fifth oil pipe (12), a reversing valve (13), a sixth oil pipe (14), a seventh oil pipe (15) and an eighth oil pipe (16); a first working area and a second working area which are not connected to each other are provided in the gearbox (3); and the multi-way valve (1), the filter (4), the temperature sensor (8), the plunger pump (10) and the compensating heat dissipation pump (11) are all installed on the gearbox (3); The first working area of ​​the gearbox (3) and the liquid inlet of the compensating heat dissipation pump (11) are connected through a third oil pipe (6), and the discharge port of the compensating heat dissipation pump (11) and the liquid inlet of the reversing valve (13) are connected through a fifth oil pipe (12); The second working area of ​​the gearbox (3), the first discharge port of the reversing valve (13) and the liquid inlet of the plunger pump (10) are connected via a fourth oil pipe (7), the liquid inlet of the filter (4) and the liquid discharge port of the plunger pump (10) are connected via a second oil pipe (5), and the liquid inlet of the multi-way valve (1) and the liquid discharge port of the filter (4) are connected via a first oil pipe (2); The second working area of ​​the gearbox (3) and the second liquid discharge port of the reversing valve (13) are communicated through an eighth oil pipe (16), the second working area of ​​the gearbox (3) and the liquid inlet of the radiator (9) are communicated through a seventh oil pipe (15), and the first working area of ​​the gearbox (3) and the liquid discharge port of the radiator (9) are communicated through a sixth oil pipe (14); The temperature sensor (8) is used to detect the temperature of the oil in the gearbox (3). The temperature sensor (8) and the reversing valve (13) are both in signal communication with the control system. The control system controls the opening and closing of the reversing valve (13) to switch the oil discharged by the compensation heat dissipation pump (11) into the fourth oil pipe (7) or the eighth oil pipe (16).

2. The intelligent heat dissipation compensation hydraulic system for tractors according to claim 1, characterized in that: The liquid inlet of the radiator (9) is located at the top end of the front side thereof, and the liquid outlet of the radiator (9) is located at the top end of the rear side thereof.

3. The intelligent heat dissipation compensation hydraulic system for tractors according to claim 2, characterized in that: Also includes: A plurality of first partitions are arranged inside the radiator (9) from front to back, the left and right sides of each first partition are connected to the inner wall of the radiator (9), and the top side of each first partition is connected to the inner wall of the radiator (9).

4. The intelligent heat dissipation compensation hydraulic system for tractors according to claim 3, characterized in that: The plurality of first partitions are all arranged between the liquid inlet of the radiator (9) and the liquid outlet of the radiator (9).

5. The intelligent heat dissipation compensation hydraulic system for tractors according to claim 4, characterized in that: Also includes: A second partition is provided between any two adjacent first partitions, the left and right side edges of each second partition are connected to the inner wall of the radiator (9), and the bottom side edges of each second partition are connected to the inner wall of the radiator (9).

6. The intelligent heat dissipation compensation hydraulic system for tractors according to claim 1, characterized in that: The top of the second working area of ​​the gearbox (3) and the second drain port of the reversing valve (13) are communicated with each other through an eighth oil pipe (16).

7. The intelligent heat dissipation compensation hydraulic system for tractors according to claim 1, characterized in that: The first liquid discharge port of the reversing valve (13) is communicated with the bottom of the second working area of ​​the gearbox (3).

8. The intelligent heat dissipation compensation hydraulic system for tractors according to claim 1, characterized in that: The bottom of the first working area of ​​the gearbox (3) and the liquid inlet of the compensation heat dissipation pump (11) are communicated through a third oil pipe (6).

9. The intelligent heat dissipation compensation hydraulic system for tractors according to claim 1, characterized in that: The outer surface of the radiator (9) is provided with a plurality of heat dissipation ribs for increasing the heat dissipation area.

10. The intelligent heat dissipation compensation hydraulic system for tractors according to claim 1, characterized in that: The outer surface of the radiator (9) is provided with a temperature reduction device.

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