A driving device heat dissipation system and engineering machinery

Abstract

The present invention discloses a drive device heat dissipation system and engineering machinery, including: a reducer; a reducer lubricating oil box body, which is connected to the reducer; a transmission device box body, in which a transmission device and a first heat dissipation device are arranged, the transmission device is connected to the reducer, the first heat dissipation device is immersed in the first lubricating oil of the transmission device box body, and is connected between the first oil port and the second oil port of the transmission device box body, and the second oil port is connected to the reducer; a first pumping device, connected between the reducer lubricating oil box body and the first oil port, is used to absorb the second lubricating oil in the reducer lubricating oil box body and pump it into the first heat dissipation device, so that the second lubricating oil flows into the reducer through the first heat dissipation device. Through the first heat dissipation device, the second lubricating oil leading to the reducer is heat-exchanged with the first lubricating oil in the transmission device box body, the second lubricating oil in the reducer is cooled, the heat generation of the reducer is avoided during operation, and the problem of excessively high temperature of the lubricating oil in the reducer is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation of a drive device, and more specifically, to a heat dissipation system for a drive device. In addition, the present invention also relates to an engineering machine comprising the heat dissipation system for the drive device. Background Art

[0002] As the power component of construction machinery, the drive device plays an important role in the equipment construction process. The drive device includes a power source, a reducer connected to the power source, and a transmission device connected to the reducer. The power source is a high-speed rotating moving part. The output motion is decelerated and torque-increased by the reducer, and then the torque is transmitted to the next-level transmission device through the reducer.

[0003] In the related technology, the reducer itself has a high operating speed and rotates at high speed during the working process. The lubricating oil is stirred and splashed during the working process of the reducer, causing the lubricating oil to heat up and generate high temperature. The high temperature easily causes the lubricating oil to deteriorate, resulting in a short maintenance and replacement cycle of the lubricating oil; and the high temperature easily causes the seals to age and degenerate, causing some parts of the reducer to leak oil frequently after working for a period of time, requiring the replacement of oil seals or even the entire reducer; in addition, the high temperature is also easy to affect the material properties, shortening the service life of the reducer. In short, as the reducer runs at high speed, it generates serious heat during the working process, which leads to a series of problems, ultimately resulting in high maintenance costs and high failure rates of the reducer.

[0004] Therefore, how to reduce the temperature of the lubricating oil during the operation of the reducer is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a heat dissipation system for a drive device, which can reduce the temperature of lubricating oil during the operation of the reducer.

[0006] Another object of the present invention is to provide an engineering machine comprising the above-mentioned drive device heat dissipation system, which can reduce the temperature of the lubricating oil during the operation of the reducer.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A drive device heat dissipation system, comprising:

[0009] Reducer;

[0010] A reducer lubricating oil box body, connected to the reducer;

[0011] A transmission device housing, in which a transmission device and a first heat sink are arranged, the transmission device is connected to the reducer, the first heat sink is immersed in the first lubricating oil of the transmission device housing and is connected between the first oil port and the second oil port of the transmission device housing, and the second oil port is communicated with the reducer;

[0012] The first pumping device is connected between the reducer lubricating oil box and the first oil port, and is used to absorb the second lubricating oil in the reducer lubricating oil box and pump it into the first heat sink, so that the second lubricating oil flows into the reducer through the first heat sink.

[0013] Optionally, a second heat sink is provided in the reducer lubricating oil box, the second heat sink is immersed in the second lubricating oil, and the second heat sink is connected between the third oil port and the fourth oil port of the reducer lubricating oil box, and the fourth oil port is connected to the transmission device box;

[0014] It also includes a second pumping device, which is connected between the transmission housing and the third oil port and is used to absorb the first lubricating oil in the transmission housing and pump it to the second heat dissipation device, so that the first lubricating oil flows into the transmission housing through the second heat dissipation device.

[0015] Optionally, the transmission device housing is provided with a lubricating oil port, the lubricating oil port is communicated with the fourth oil port, and the lubricating oil port leads to the location of the moving parts at the connection between the transmission device and the reducer.

[0016] Optionally, at least one of the connecting pipes between the transmission case and the second pumping device, between the second pumping device and the third oil port, and between the fourth oil port and the transmission case is provided with a first filter.

[0017] Optionally, at least one of the connecting pipes between the reducer lubricating oil tank and the first pumping device, between the first pumping device and the first oil port, and between the second oil port and the reducer is provided with a second filter.

[0018] Optionally, a one-way valve is provided between the second oil port and the reducer, and an inlet of the one-way valve is connected to the second oil port.

[0019] Optionally, the reducer includes a fifth oil port located at the lower part of the reducer and a sixth oil port located at the upper part of the reducer, the second oil port is connected to the fifth oil port, and the sixth oil port is connected to the reducer lubricating oil tank.

[0020] Optionally, the number of the reducers is at least two, and all the reducers are connected to the reducer lubricating oil tank and are connected to the second oil port.

[0021] Optionally, at least one seventh oil port is provided on the top of the transmission housing, and the fourth oil port is connected to the seventh oil port.

[0022] An engineering machine comprises the above-mentioned drive device heat dissipation system.

[0023] The beneficial effects of the drive device heat dissipation system provided by the present invention are as follows:

[0024] By adding a reducer lubricating oil box and a first pumping device, the reducer lubricating oil box, the first pumping device, the first heat sink in the transmission box, and the reducer form a first circuit. When the first pumping device is working, the second lubricating oil in the reducer lubricating oil box enters the first pumping device, flows out from the first pumping device, reaches the first oil port of the transmission box, flows through the first heat sink, and completes heat exchange with the first lubricating oil with a lower temperature in the transmission box through the first heat sink to form the second lubricating oil with a lower temperature. The second lubricating oil with a lower temperature flows out from the second oil port of the transmission box, and finally enters the reducer to complete the lubrication of the moving parts in the reducer. The excess second lubricating oil in the reducer flows into the reducer lubricating oil box.

[0025] It can be understood by those skilled in the art that, because the reducer itself is relatively small in size, the heat dissipation area is small, and the heat dissipation is slow, the heat generated by stirring the second lubricating oil when the reducer rotates at a high speed is large, so that the temperature of the second lubricating oil is high; while the size of the transmission device housing is large, the heat dissipation area is large, and the heat dissipation is fast, and because the transmission device rotates slowly, the heat generated by stirring the first lubricating oil is not much, so that the temperature of the first lubricating oil is low, and it can be quickly dissipated to the surrounding environment, so that the temperature value inside the transmission device housing is still far from the maximum allowable working temperature. Therefore, based on the temperature difference between the lubricating oil in the reducer and the transmission device housing, the present invention sets a reducer lubricating oil housing and a first pumping device, and through the first heat dissipation device, the second lubricating oil leading to the reducer is heat exchanged with the first lubricating oil in the transmission device housing, so as to achieve effective cooling of the second lubricating oil in the reducer, avoid the serious heating of the reducer during operation, solve the problem of excessively high temperature of the lubricating oil in the reducer, thereby avoiding a series of problems caused by excessively high temperature in the reducer, reducing the failure rate of the reducer, reducing the maintenance cost, improving the reliability of the product, and extending the service life of the product.

[0026] In addition, it is understandable that the second lubricating oil inside the reducer and the first lubricating oil inside the transmission device housing have different requirements for the cleanliness of the lubricating oil, and the degree of external pollution is also different. The drive device heat dissipation system provided by the present invention, when completing the heat exchange, the second lubricating oil leading to the reducer passes through the first heat dissipation device to exchange heat with the first lubricating oil in the transmission device housing, and the first lubricating oil and the second lubricating oil are separated by the first heat dissipation device. That is, during the heat exchange process, the second lubricating oil inside the reducer and the first lubricating oil inside the transmission device housing are not mixed together, which effectively avoids the situation where lubricating oils of different cleanliness are mixed together during long-term use.

[0027] Moreover, in the related art, the speed reducer and the transmission device both adopt a splashing passive lubrication method, that is, during the operation of the speed reducer and the transmission device, the moving parts inside the speed reducer and the transmission device are operated to drive the lubricating oil to splash, so as to achieve the lubrication of the moving parts by the lubricating oil, while the parts where the lubricating oil cannot splash cannot be lubricated, which easily leads to the phenomenon of insufficient lubrication and damage to the moving parts. The heat dissipation system of the drive device provided by the present invention delivers the second lubricating oil in the lubricating oil box of the speed reducer into the speed reducer through the first heat dissipation device through the first pumping device, so as to achieve the active circulation of the second lubricating oil, which is conducive to the second lubricating oil flowing into the speed reducer through the first heat dissipation device to fully lubricate the moving parts in the speed reducer, and reduce the phenomenon of damage to the moving parts in the speed reducer due to insufficient lubrication.

[0028] The engineering machinery provided by the present invention includes the above-mentioned drive device heat dissipation system and has the same beneficial effects as the above-mentioned drive device heat dissipation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of a heat dissipation system for a drive device provided in a specific embodiment of the present invention.

[0031] Reference numerals:

[0032] 1-reducer; 2-reducer lubricating oil box; 3-transmission device box; 4-first heat dissipation device; 5-first pumping device; 6-second heat dissipation device; 7-second pumping device; 8-first filter; 9-second filter; 10-check valve; A-first oil port; B-second oil port; C-third oil port; D-fourth oil port; E-lubricating oil port; F-fifth oil port; G-sixth oil port; H-seventh oil port. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The core of the present invention is to provide a drive device heat dissipation system, which can reduce the temperature of lubricating oil during the operation of the reducer. Another core of the present invention is to provide an engineering machine including the above drive device heat dissipation system, which can reduce the temperature of lubricating oil during the operation of the reducer.

[0035] Please refer to Figure 1 The embodiment of the present invention provides a heat dissipation system for a drive device, including a reducer 1, a reducer lubricating oil box 2, a transmission device box 3 and a first pumping device 5, wherein the reducer lubricating oil box 2 is connected to the reducer 1; a transmission device and a first heat dissipation device 4 are arranged in the transmission device box 3, the transmission device is connected to the reducer 1, the first heat dissipation device 4 is immersed in the first lubricating oil of the transmission device box 3, and is connected between the first oil port A and the second oil port B of the transmission device box 3, and the second oil port B is connected to the reducer 1; the first pumping device 5 is connected between the reducer lubricating oil box 2 and the first oil port A, and is used to absorb the second lubricating oil in the reducer lubricating oil box 2 and pump it into the first heat dissipation device 4, so that the second lubricating oil flows into the reducer 1 via the first heat dissipation device 4.

[0036] That is to say, the heat dissipation system of the drive device forms a first circuit by adding a reducer lubricating oil box 2 and a first pumping device 5, so that the reducer lubricating oil box 2, the first pumping device 5, the first heat sink 4 in the transmission device box 3 and the reducer 1. When the first pumping device 5 is working, the second lubricating oil in the reducer lubricating oil box 2 enters the first pumping device 5, flows out from the first pumping device 5, reaches the first oil port A of the transmission device box 3, flows through the first heat sink 4, and completes heat exchange with the first lubricating oil with a lower temperature in the transmission device box 3 through the first heat sink 4 to form the second lubricating oil with a lower temperature. The second lubricating oil with a lower temperature flows out from the second oil port B of the transmission device box 3, and finally enters the reducer 1 to complete the lubrication of the moving parts in the reducer 1. The excess second lubricating oil in the reducer 1 flows into the reducer lubricating oil box 2.

[0037] It can be understood by those skilled in the art that, since the reducer 1 itself is relatively small in size, has a small heat dissipation area and slow heat dissipation, a lot of heat is generated by stirring the second lubricating oil when the reducer 1 rotates at high speed, thereby making the temperature of the second lubricating oil high; while the transmission device housing 3 is large in size, has a large heat dissipation area and fast heat dissipation, and since the transmission device rotates slowly, not much heat is generated by stirring the first lubricating oil, thereby making the temperature of the first lubricating oil low and able to be quickly dissipated to the surrounding environment, thereby making the temperature value inside the transmission device housing 3 far from the maximum allowable operating temperature. Therefore, based on the temperature difference between the lubricating oil in the reducer 1 and the transmission device housing 3, the embodiment of the present invention provides a reducer lubricating oil housing 2 and a first pumping device 5, and through the first heat dissipation device 4, the second lubricating oil leading to the reducer 1 is heat exchanged with the first lubricating oil in the transmission device housing 3, thereby achieving effective cooling of the second lubricating oil in the reducer 1, avoiding serious heating of the reducer 1 during operation, and solving the problem of excessively high temperature of the lubricating oil in the reducer 1, thereby avoiding a series of problems caused by excessively high temperature in the reducer 1, reducing the failure rate of the reducer 1, reducing maintenance costs, improving product reliability, and extending product service life.

[0038] In addition, it can be understood that the second lubricating oil inside the reducer 1 and the first lubricating oil inside the transmission device housing 3 have different requirements for the cleanliness of the lubricating oil, and the degree of external pollution is also different. The drive device heat dissipation system provided in the embodiment of the present invention, when completing the heat exchange, the second lubricating oil leading to the reducer 1 passes through the first heat dissipation device 4 and exchanges heat with the first lubricating oil in the transmission device housing 3, and the first lubricating oil and the second lubricating oil are separated by the first heat dissipation device 4. That is, during the heat exchange process, the second lubricating oil inside the reducer 1 and the first lubricating oil inside the transmission device housing 3 are not mixed together, which effectively avoids the situation where lubricating oils of different cleanliness are mixed together during long-term use.

[0039] Moreover, in the related art, the speed reducer 1 and the transmission device both adopt a splashing passive lubrication method, that is, during the operation of the speed reducer 1 and the transmission device, the moving parts inside the speed reducer 1 and the transmission device are operated to drive the lubricating oil to splash, so as to achieve the lubrication of the moving parts by the lubricating oil, while the parts where the lubricating oil cannot splash cannot be lubricated, which easily leads to the phenomenon of insufficient lubrication and damage to the moving parts. The heat dissipation system of the drive device provided in the embodiment of the present invention delivers the second lubricating oil in the speed reducer lubricating oil box 2 into the speed reducer 1 through the first heat dissipation device 4 through the first pumping device 5, so as to achieve the active circulation of the second lubricating oil, which is conducive to the second lubricating oil flowing into the speed reducer 1 through the first heat dissipation device 4 to fully lubricate the moving parts in the speed reducer 1, and reduce the phenomenon of damage to the moving parts in the speed reducer 1 due to insufficient lubrication.

[0040] It should be noted that the embodiment of the present invention does not limit the specific structure of the transmission housing 3. Those skilled in the art may refer to relevant technologies. For example, the transmission housing 3 includes a housing body, a ring gear or a large gear with a larger diameter arranged in the housing body, and one or at least two small gears with a smaller diameter arranged in the housing body. The ring gear or the large gear and the small gear mesh to form a gear train to achieve torque transmission and amplify torque. Lubricating oil is added to the housing body. Usually, the housing body is a large housing with a larger volume.

[0041] In order to further improve the effect of cooling the second lubricating oil inside the reducer 1, in some embodiments, a second heat sink 6 is provided in the reducer lubricating oil tank 2, the second heat sink 6 is immersed in the second lubricating oil, and the second heat sink 6 is connected between the third oil port C and the fourth oil port D of the reducer lubricating oil tank 2, and the fourth oil port D is connected to the transmission device housing 3; the drive device heat dissipation system also includes a second pumping device 7, the second pumping device 7 is connected between the transmission device housing 3 and the third oil port C, the second pumping device 7 is used to absorb the first lubricating oil in the transmission device housing 3 and pump it to the second heat sink 6, so that the first lubricating oil flows into the transmission device housing 3 via the second heat sink 6.

[0042] That is to say, the transmission housing 3, the second pumping device 7, the second heat sink 6 in the reducer lubricating oil housing 2, and the reducer 1 form a second circuit. When the second pumping device 7 is working, the first lubricating oil with a relatively low temperature inside the transmission housing 3 enters the second pumping device 7, and after going out of the second pumping device 7, reaches the third oil port C of the reducer lubricating oil housing 2, flows through the second heat sink 6, completes heat exchange with the second lubricating oil with a relatively high temperature in the reducer lubricating oil housing 2, flows out from the fourth oil port D of the reducer lubricating oil housing 2, and then flows into the transmission housing 3.

[0043] That is to say, this embodiment uses the first lubricating oil with a relatively low temperature through the second heat sink 6 to exchange heat with the second lubricating oil with a higher temperature in the reducer lubricating oil box 2, which can further reduce the temperature of the second lubricating oil in the reducer lubricating oil box 2, thereby further reducing the temperature of the second lubricating oil entering the reducer 1 through the first heat sink 4, and further cooling the second lubricating oil in the reducer 1, so that the cooling effect is better. The heat brought to the first lubricating oil in the second heat sink 6 eventually enters the transmission device case 3 and neutralizes with the first lubricating oil in the transmission device case 3 to release the temperature. Since the transmission device case 3 is large in size, has a large heat dissipation area, and has fast heat dissipation, and the transmission speed is slow, the heat generated by stirring the oil is not much, and the temperature rise of the first lubricating oil in the transmission device case 3 is not high. Therefore, the temperature of the first lubricating oil in the transmission device case 3 is relatively low, and it can be quickly dissipated to the surrounding environment.

[0044] Further, in some embodiments, the transmission device housing 3 is provided with a lubricating oil port E, which is in communication with the fourth oil port D, and the lubricating oil port E leads to the position of the moving parts at the connection between the transmission device and the reducer 1. That is to say, in this embodiment, the first lubricating oil flowing out of the fourth oil port D not only flows back into the transmission device housing 3, but also flows into the lubricating oil port E, and flows from the lubricating oil port E to the position of the moving parts at the connection between the transmission device and the reducer 1, so as to achieve the function of lubricating the moving parts at the connection between the transmission device and the reducer 1, for example, lubricating the bearings and gears at the connection between the transmission device and the reducer 1.

[0045] In addition, in the related art, the first lubricating oil in the transmission housing 3 is easily contaminated, and the cleanliness is difficult to ensure. On the one hand, there is pollution caused by the external environment, because the transmission housing 3 is in a dusty working environment. Due to the gaps between the structures of the transmission housing 3 itself or the gaps caused by long-term work wear, external dust, rainwater and other pollutants will gradually penetrate into the transmission housing 3 to cause pollution. There is also external pollution caused by the disassembly and assembly of parts during the maintenance of the transmission. On the other hand, there is metal particle pollution caused by the wear of the transmission itself during operation, that is, wear and tear is inevitable during the operation of the transmission, and the metal particles under wear will always exist in the transmission housing 3 to form pollutants. The pollutants generated in these two situations will have a great impact on the operation of the transmission, accelerating the wear and damage of the transmission.

[0046] In order to solve the technical problem that the first lubricating oil in the transmission housing 3 is easily contaminated and the cleanliness is difficult to ensure, in some embodiments, at least one of the connecting pipes between the transmission housing 3 and the second pumping device 7, between the second pumping device 7 and the third oil port C, and between the fourth oil port D and the transmission housing 3 is provided with a first filter 8. That is to say, in the second circuit formed by the transmission housing 3, the second pumping device 7, the second heat sink 6 in the reducer lubricating oil housing 2, and the reducer 1, a first filter 8 is provided, and the first filter 8 is used to filter the first lubricating oil circulating in the second circuit, thereby solving the technical problem that the first lubricating oil in the transmission housing 3 is easily contaminated and the cleanliness is difficult to ensure.

[0047] Furthermore, in some embodiments, the first filter 8 is disposed on the connecting pipe between the transmission device housing 3 and the second pumping device 7 .

[0048] In addition, in order to reduce the risk of the second lubricating oil in the reducer 1 being easily contaminated, in some embodiments, at least one of the connecting pipes between the reducer lubricating oil box 2 and the first pumping device 5, between the first pumping device 5 and the first oil port A, and between the second oil port B and the reducer 1 is provided with a second filter 9. That is to say, in this embodiment, a second filter 9 is provided in the first circuit formed by the reducer lubricating oil box 2, the first pumping device 5, the first heat sink 4 in the transmission device box 3, and the reducer 1, and the second filter 9 is used to filter the second lubricating oil circulating in the first circuit, thereby solving the technical problem that the second lubricating oil in the reducer 1 is easily contaminated and the cleanliness is difficult to ensure.

[0049] Furthermore, in some embodiments, the second filter 9 is disposed on the connecting pipe between the second oil port B and the reducer 1 .

[0050] In addition, in some embodiments, a one-way valve 10 is provided between the second oil port B and the reducer 1, and the inlet of the one-way valve 10 is connected to the second oil port B. In other words, by providing the one-way valve 10, the second lubricating oil can only flow into the reducer 1 from the second oil port B, and the second lubricating oil in the reducer 1 is prevented from flowing back to the second oil port B.

[0051] In addition, in some embodiments, the reducer 1 includes a fifth oil port F and a sixth oil port G, the fifth oil port F is located at the lower part of the reducer 1, the sixth oil port G is located at the upper part of the reducer 1, the second oil port B is connected to the fifth oil port F, and the sixth oil port G is connected to the reducer lubricating oil tank 2. That is to say, the second lubricating oil flowing out of the second oil port B enters the reducer 1 through the fifth oil port F, and the second lubricating oil in the reducer 1 flows back from the sixth oil port G to the reducer lubricating oil tank 2, so that the moving parts in the reducer 1 can be lubricated more fully.

[0052] In addition, the above embodiments do not limit the specific number of reducers 1, and the number of reducers 1 can be one or at least two.

[0053] In some embodiments, there are at least two reducers 1, and all reducers 1 are connected to the reducer lubricating oil tank 2 and are connected to the second oil port B. That is, all reducers 1 participate in the oil circuit circulation of the first circuit and the second circuit described above, ensuring that the lubricating oil in each reducer 1 can be cooled.

[0054] In addition, in some embodiments, at least one seventh oil port H is provided on the top of the transmission housing 3, and the fourth oil port D is connected to the seventh oil port H. That is, after the first lubricating oil flows out through the second heat sink 6 through the fourth oil port D, it flows back into the transmission housing 3 from the seventh oil port H on the top of the transmission housing 3, which is beneficial to fully lubricate the various moving parts in the upper part of the transmission housing 3.

[0055] It should be noted that the embodiment of the present invention does not limit the specific structure of the first pumping device 5 and the second pumping device 7, as long as the lubricating oil can be sucked and pumped. For example, the first pumping device 5 and the second pumping device 7 can be oil pumps respectively.

[0056] In addition, the embodiment of the present invention does not limit the specific structure of the first heat sink 4 and the second heat sink 6, as long as the first heat sink 4 and the second heat sink 6 can respectively allow the lubricating oil to pass through and dissipate the heat of the lubricating oil passing through. For example, the first heat sink 4 and the second heat sink 6 can be heat pipes respectively. It is understood that the heat pipe has a high thermal conductivity to achieve heat exchange of the lubricating oil temperature inside and outside the heat pipe.

[0057] In addition to the above-mentioned drive device heat dissipation system, the present invention also provides an engineering machinery including the drive device heat dissipation system disclosed in the above-mentioned embodiment. For the structures of other parts of the engineering machinery, please refer to the relevant technology and will not be described in detail herein.

[0058] The focus of this embodiment is to adopt the drive device heat dissipation system disclosed in any of the above embodiments, which has the same beneficial effects as the above drive device heat dissipation system, and will not be repeated here.

[0059] It should also be noted that, in this specification, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0060] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0061] The above is a detailed introduction to the drive device heat dissipation system and engineering machinery provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A drive device heat dissipation system, characterized in that: include: Reducer (1); A reducer lubricating oil box (2) connected to the reducer (1); A transmission device housing (3) having a transmission device and a first heat sink (4) therein, the transmission device being connected to the reducer (1), the first heat sink (4) being immersed in a first lubricating oil of the transmission device housing (3) and connected between a first oil port (A) and a second oil port (B) of the transmission device housing (3), the second oil port (B) being in communication with the reducer (1); A first pumping device (5) is connected between the reducer lubricating oil box (2) and the first oil port (A) and is used to absorb the second lubricating oil in the reducer lubricating oil box (2) and pump it into the first heat sink (4), so that the second lubricating oil flows into the reducer (1) via the first heat sink (4).

2. The drive device heat dissipation system according to claim 1, characterized in that: A second heat sink (6) is provided in the reducer lubricating oil housing (2), the second heat sink (6) is immersed in the second lubricating oil, and the second heat sink (6) is connected between a third oil port (C) and a fourth oil port (D) of the reducer lubricating oil housing (2), and the fourth oil port (D) is connected to the transmission device housing (3); The transmission device also includes a second pumping device (7), which is connected between the transmission device housing (3) and the third oil port (C) and is used to absorb the first lubricating oil in the transmission device housing (3) and pump it to the second heat sink (6), so that the first lubricating oil flows into the transmission device housing (3) via the second heat sink (6).

3. The drive device heat dissipation system according to claim 2, characterized in that: The transmission device housing (3) is provided with a lubricating oil port (E), the lubricating oil port (E) is in communication with the fourth oil port (D), and the lubricating oil port (E) leads to the location of the moving parts at the connection between the transmission device and the reducer (1).

4. The drive device heat dissipation system according to claim 2, characterized in that: At least one of the connecting pipes between the transmission case (3) and the second pumping device (7), between the second pumping device (7) and the third oil port (C), and between the fourth oil port (D) and the transmission case (3) is provided with a first filter (8).

5. The drive device heat dissipation system according to any one of claims 1 to 4, characterized in that: At least one of the connecting pipes between the reducer lubricating oil tank (2) and the first pumping device (5), between the first pumping device (5) and the first oil port (A), and between the second oil port (B) and the reducer (1) is provided with a second filter (9).

6. The drive device heat dissipation system according to any one of claims 1 to 4, characterized in that: A one-way valve (10) is provided between the second oil port (B) and the reducer (1), and an inlet of the one-way valve (10) is connected to the second oil port (B).

7. The drive device heat dissipation system according to any one of claims 1 to 4, characterized in that: The reducer (1) comprises a fifth oil port (F) located at the lower part of the reducer (1) and a sixth oil port (G) located at the upper part of the reducer, the second oil port (B) is connected to the fifth oil port (F), and the sixth oil port (G) is connected to the reducer lubricating oil tank (2).

8. The drive device heat dissipation system according to any one of claims 1 to 4, characterized in that: The number of the reducers (1) is at least two, and all the reducers (1) are connected to the reducer lubricating oil box (2) and are connected to the second oil port (B).

9. The drive device heat dissipation system according to claim 2, characterized in that: At least one seventh oil port (H) is provided on the top of the transmission device housing (3), and the fourth oil port (D) is in communication with the seventh oil port (H).

10. An engineering machine, characterized in that: A drive device heat dissipation system comprising any one of claims 1-9.

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