Efficient excavator oil way heat dissipation structure

Abstract

The utility model discloses an efficient excavator oil way heat dissipation structure, and belongs to the technical field of engineering machinery. The heat dissipation mechanism comprises an oil tank, a cooling part is arranged in the oil tank, a gap is formed between the cooling part and the inner wall of the oil tank, an overflow barrel is arranged at the top of the oil tank and fixedly connected with the cooling part through a flow guide part used for guiding oil into the gap, and the bottom of the overflow barrel is fixedly connected with an oil pumping pipe. The oil pump pipe is connected with an oil pump mechanism used for pumping oil into the overflow barrel, and a cooling pipe set is attached to the inner side of the cooling piece. Oil in the oil tank is continuously pumped into the overflow barrel through the oil pump pipe by means of the oil pump mechanism, and the oil overflows outwards after the overflow barrel is filled with the oil; oil liquid enters the gap between the cooling piece and the oil tank through guiding of the flow guiding piece, the width of the gap is small so that the oil liquid flow can be reduced, the oil liquid makes full contact with the cooling piece and the oil tank, and therefore the temperature of the oil liquid can be rapidly taken away by the cooling piece.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a high-efficiency oil circuit heat dissipation structure for an excavator. Background Art

[0002] An excavator is an earth-moving machine that uses a bucket to dig materials above or below the bearing surface and loads them into transport vehicles or unloads them to a stockpile. The operation of the excavator's mechanical arm is mainly powered by a hydraulic system. As the mechanical arm continues to move, the oil temperature will continue to rise due to friction with the inner walls of various hydraulic components. The rise in oil temperature will cause the viscosity of the oil to decrease, resulting in consequences such as oil leakage or damage to hydraulic components. Therefore, an efficient oil circuit heat dissipation structure is required. Utility Model Content

[0003] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures specifically pointed out in the description and other drawings of the description.

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a high-efficiency excavator oil circuit heat dissipation structure.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: an efficient excavator oil circuit heat dissipation structure, including an oil tank, a cooling element is arranged in the oil tank, a gap is provided between the cooling element and the inner wall of the oil tank, an overflow bucket is arranged on the top of the oil tank, the overflow bucket is fixedly connected to the cooling element by a guide element for guiding oil into the gap, an oil pump pipe is fixedly connected to the bottom of the overflow bucket, the oil pump pipe is connected to an oil pump mechanism for pumping oil into the overflow bucket, and a cooling pipe group is attached to the inner side of the cooling element.

[0006] By adopting the above technical solution, the oil in the oil tank is continuously pumped into the overflow barrel through the oil pump pipe by means of the oil pump mechanism. The oil will overflow outward after filling the overflow barrel, and enter the gap between the cooling element and the oil tank through the guidance of the guide member. The smaller width of the gap will reduce the oil flow rate, and fully contact the cooling element and the oil tank, so that the temperature of the oil can be quickly taken away by the cooling element. A cooling pipe group is fitted on the inner side of the cooling element. The coolant circulates in the cooling pipe group to reduce the temperature of the cooling element, so that there is always a temperature difference between the cooling element and the oil, thereby ensuring the heat dissipation efficiency.

[0007] Preferably, a plurality of partitions are provided between the cooling element and the inner wall of the oil tank, and a plurality of gaps are formed between the cooling element and the inner wall of the oil tank by the plurality of partitions. The utility model further increases the number of gaps by using partitions, dissipates heat from the oil liquid through a plurality of gaps at the same time, and improves heat dissipation efficiency.

[0008] Preferably, a flow divider is provided at the entrance of each of the gaps, the cross section of each of the flow dividers is triangular, and both sides of the flow divider have oil drain ports, and the flow divider is fixedly connected to the partition or the cooling element. The utility model utilizes a flow divider to divert the oil, allowing the oil to flow along the surface of the cooling element or the partition, thereby ensuring full contact between the oil and the cooling element and the partition. At the same time, the flow divider can further reduce the thickness of the oil when it flows on the surface of the cooling element and the partition, further accelerating the heat dissipation efficiency.

[0009] Preferably, the cooling element and the plurality of the partitions are connected as one through a heat-conducting rod, a plurality of the heat-conducting rods are provided, and the plurality of the heat-conducting rods are evenly distributed, and the cooling element and the plurality of the partitions are fixedly connected to the oil tank through the heat-conducting rods. The cooling element and the partition of the utility model are connected as one through the heat-conducting rods, thereby increasing the contact area between the partition and the cooling plate, facilitating the mutual conduction of heat, thereby preventing the partition from having an excessively high temperature that affects the heat dissipation efficiency.

[0010] Preferably, the cooling tube group includes a plurality of looped tubes, and the plurality of looped tubes are interconnected through a connecting tube. The two looped tubes located at both ends of the cooling tube group are connected with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe extend to the outside of the oil tank. The position of the connecting tube of the utility model alternates back and forth on both sides of the looped tube, and two adjacent connecting tubes will not be located on the same side of the looped tube. In this way, the cooling water can enter the next looped tube through the connecting tube only after completely flowing through one of the looped tubes, thereby ensuring that each looped tube is filled with cooling water. The cooling water is pumped into the water inlet pipe by a water pump and enters the first looped tube, and finally discharged from the water outlet pipe after passing through the last looped tube.

[0011] Preferably, the water inlet pipe is located at the top of the cooling tube group, and the water outlet pipe is located at the bottom of the cooling tube group. The utility model adopts this arrangement to allow cooling water to flow from bottom to top, and cooling water that has not yet absorbed heat first contacts the lower half of the cooling element. Since the oil has absorbed part of the heat when it is located in the lower half of the cooling element, the temperature is relatively low. Through the top-down flow of cooling water, the lower half of the cooling element can also maintain a relatively low temperature, so that there can be a large temperature difference between the relatively low temperature oil and the cooling element, further accelerating the heat dissipation efficiency.

[0012] Preferably, the cooling tube group is provided with two groups, and the other group of the cooling tube group is attached to the outside of the oil tank. The utility model can dissipate heat from the oil tank itself by using the other group of cooling tube groups. Since the oil tank itself also absorbs the heat of the oil, and the partition and the cooling plate are in contact with the oil tank through the heat-conducting rod, the cooling tube group can be used to lower the temperature of the oil tank itself, which can further improve the heat dissipation efficiency.

[0013] Preferably, each of the looped tubes is fixedly connected to the oil tank or the cooling element via a heat conducting member. The utility model utilizes the heat conducting member to increase the contact area between the oil tank and the cooling element and the looped tube, thereby further improving the heat dissipation efficiency.

[0014] In summary, the beneficial effects of the utility model are:

[0015] 1. Use the oil pump mechanism to continuously pump the oil in the oil tank into the overflow barrel through the oil pump pipe. The oil will overflow after filling the overflow barrel and enter the gap between the cooling element and the oil tank through the guidance of the guide piece. The smaller the width of the gap, the smaller the oil flow rate will be, and the oil will fully contact the cooling element and the oil tank, so that the temperature of the oil can be quickly taken away by the cooling element.

[0016] 2. Use separators to further increase the number of gaps, dissipate heat from the oil through multiple gaps at the same time, and improve heat dissipation efficiency.

[0017] 3. Using diverters to divert the oil allows the oil to flow along the surface of the cooler or separator, thereby ensuring full contact between the oil and the cooler and separator. At the same time, the diverter can further reduce the thickness of the oil when it flows on the surface of the cooler and separator, further accelerating the heat dissipation efficiency.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0019] Undoubtedly, these and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments described with reference to various figures and drawings.

[0020] In order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, one or several preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0022] In the drawings, the same reference numerals are used for the same components and the drawings are schematic and not necessarily drawn to scale.

[0023] In order to more clearly illustrate the embodiments of the utility model 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 one or several embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on such drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure;

[0026] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0027] Figure 4 It is a schematic diagram of the structure of the cooling element, the diverter element and the separator element.

[0028] Explanation of main figure marks: 1. Oil tank; 2. Cooling element; 3. Gap; 4. Overflow bucket; 5. Flow guide; 6. Oil pump pipe; 7. Partition; 8. Diverter; 9. Oil drain port; 10. Heat transfer rod; 11. Meander pipe; 12. Connecting pipe; 13. Water inlet pipe; 14. Water outlet pipe; 15. Heat transfer element; 16. Oil pump mechanism. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model, but not to limit the utility model.

[0030] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0033] like Figure 1-4 As shown, a high-efficiency excavator oil circuit heat dissipation structure includes an oil tank 1, a cooling member 2 is arranged in the oil tank 1, a gap 3 is provided between the cooling member 2 and the inner wall of the oil tank 1, an overflow bucket 4 is arranged on the top of the oil tank 1, the overflow bucket 4 is fixedly connected to the cooling member 2 through a guide member 5 for guiding oil into the gap 3, an oil pump pipe 6 is fixedly connected to the bottom of the overflow bucket 4, the oil pump pipe 6 is connected to an oil pump mechanism 16 for pumping oil into the overflow bucket 4, and a cooling pipe group is attached to the inner side of the cooling member 2.

[0034] By adopting the above technical solution, the oil in the oil tank 1 is continuously pumped into the overflow barrel 4 through the oil pump pipe 6 by means of the oil pump mechanism 16. The oil will overflow outward after filling the overflow barrel 4, and enter the gap 3 between the cooling element 2 and the oil tank 1 through the guidance of the guide member 5. The smaller width of the gap 3 will reduce the oil flow rate, and fully contact the cooling element 2 and the oil tank 1, so that the temperature of the oil can be quickly taken away by the cooling element 2. A cooling pipe group is fitted on the inner side of the cooling element 2. The coolant circulating in the cooling pipe group can reduce the temperature of the cooling element 2, so that there is always a temperature difference between the cooling element 2 and the oil, thereby ensuring the heat dissipation efficiency.

[0035] A plurality of partitions 7 are provided between the cooling element 2 and the inner wall of the oil tank 1, and a plurality of gaps 3 are formed between the cooling element 2 and the inner wall of the oil tank 1 through the plurality of partitions 7. The number of gaps 3 is further increased by using the partitions 7, and the oil is cooled by the plurality of gaps 3 at the same time, thereby improving the cooling efficiency.

[0036] A flow divider 8 is provided at the entrance of each gap 3, and the cross section of each flow divider 8 is triangular. Both sides of the flow divider 8 are provided with oil discharge ports 9, and the flow divider 8 is fixedly connected to the partition 7 or the cooling element 2. By using the flow divider 8 to divide the oil, the oil can flow along the surface of the cooling element 2 or the partition 7, thereby ensuring full contact between the oil and the cooling element 2 and the partition 7. At the same time, the flow divider 8 can further reduce the thickness of the oil when it flows on the surface of the cooling element 2 and the partition 7, further accelerating the heat dissipation efficiency.

[0037] The cooling element 2 and the plurality of partitions 7 are connected as a whole through the heat-conducting rod 10. A plurality of heat-conducting rods 10 are provided and evenly distributed. The cooling element 2 and the plurality of partitions 7 are fixedly connected to the oil tank 1 through the heat-conducting rod 10. The cooling element 2 and the partitions 7 are connected as a whole through the heat-conducting rod 10, thereby increasing the contact area between the partition 7 and the cooling plate, facilitating the mutual conduction of heat, and thus preventing the partition 7 from having an excessively high temperature that affects the heat dissipation efficiency.

[0038] The cooling pipe group includes a plurality of loop pipes 11, which are interconnected through connecting pipes 12. The two loop pipes 11 at both ends of the cooling pipe group are connected with a water inlet pipe 13 and a water outlet pipe 14, which extend to the outside of the oil tank 1. The positions of the connecting pipes 12 alternate back and forth on both sides of the loop pipes 11, and two adjacent connecting pipes 12 will not be located on the same side of the loop pipes 11. In this way, the cooling water can enter the next loop pipe 11 through the connecting pipe 12 only after it has completely flowed through one of the loop pipes 11, thereby ensuring that each loop pipe 11 is filled with cooling water. The cooling water is pumped into the water inlet pipe 13 and enters the first loop pipe 11 through a water pump, and finally discharged from the water outlet pipe 14 after passing through the last loop pipe 11.

[0039] The water inlet pipe 13 is located at the top of the cooling tube group, and the water outlet pipe 14 is located at the bottom of the cooling tube group. Through this arrangement, the cooling water can flow from bottom to top, and the cooling water that has not absorbed too much heat first contacts the lower half of the cooling element 2. Since the oil has absorbed part of the heat when it is located in the lower half of the cooling element 2, the temperature is relatively low. Through the top-down flow of the cooling water, the lower half of the cooling element 2 can also maintain a relatively low temperature, so that there can be a large temperature difference between the relatively low temperature oil and the cooling element 2, further accelerating the heat dissipation efficiency.

[0040] There are two cooling tube groups, and the other cooling tube group is attached to the outside of the oil tank 1. The other cooling tube group can dissipate heat from the oil tank 1 itself. Since the oil tank 1 itself also absorbs the heat of the oil, and the partition 7 and the cooling plate are in contact with the oil tank 1 through the heat conducting rod 10, the cooling tube group can be used to lower the temperature of the oil tank 1 itself, which can further improve the heat dissipation efficiency.

[0041] Each loop pipe 11 is fixedly connected to the oil tank 1 or the cooling element 2 via the heat conducting member 15. The heat conducting member 15 is used to increase the contact area between the oil tank 1 and the cooling element 2 and the loop pipe 11, thereby further improving the heat dissipation efficiency.

[0042] It should be noted that many specific details are set forth in the above description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

Claims

1. An efficient excavator oil circuit heat dissipation structure, comprising an oil tank (1), characterized in that: A cooling element (2) is arranged in the oil tank (1), a gap (3) is provided between the cooling element (2) and the inner wall of the oil tank (1), an overflow bucket (4) is arranged on the top of the oil tank (1), the overflow bucket (4) is fixedly connected to the cooling element (2) via a guide element (5) for guiding oil into the gap (3), an oil pump pipe (6) is fixedly connected to the bottom of the overflow bucket (4), the oil pump pipe (6) is connected to an oil pump mechanism (16) for pumping oil into the overflow bucket (4), and a cooling pipe group is attached to the inner side of the cooling element (2).

2. The high-efficiency excavator oil circuit heat dissipation structure according to claim 1 is characterized by: A plurality of partitions (7) are arranged between the cooling element (2) and the inner wall of the oil tank (1), and a plurality of gaps (3) are formed between the cooling element (2) and the inner wall of the oil tank (1) through the plurality of partitions (7).

3. The high-efficiency excavator oil circuit heat dissipation structure according to claim 2 is characterized in that: A flow divider (8) is provided at the entrance of each gap (3), the cross section of each flow divider (8) is triangular, both sides of the flow divider (8) are provided with oil discharge ports (9), and the flow divider (8) is fixedly connected to the partition (7) or the cooling element (2).

4. The high-efficiency excavator oil circuit heat dissipation structure according to claim 2 is characterized by: The cooling element (2) and the plurality of partitions (7) are connected as a whole via a heat-conducting rod (10); a plurality of heat-conducting rods (10) are provided and the heat-conducting rods (10) are evenly distributed; the cooling element (2) and the plurality of partitions (7) are fixedly connected to the oil tank (1) via the heat-conducting rod (10).

5. The high-efficiency excavator oil circuit heat dissipation structure according to claim 4 is characterized in that: The cooling tube group comprises a plurality of looped tubes (11), the plurality of looped tubes (11) being interconnected via a connecting tube (12), two looped tubes (11) located at two ends of the cooling tube group being connected to a water inlet pipe (13) and a water outlet pipe (14), the water inlet pipe (13) and the water outlet pipe (14) extending to the outside of the oil tank (1).

6. The high-efficiency excavator oil circuit heat dissipation structure according to claim 5 is characterized by: The water inlet pipe (13) is located at the top end of the cooling tube group, and the water outlet pipe (14) is located at the bottom end of the cooling tube group.

7. The high-efficiency excavator oil circuit heat dissipation structure according to claim 5 is characterized by: Two groups of cooling tube groups are provided, and the other group of cooling tube groups is attached to the outside of the oil tank (1).

8. The high-efficiency excavator oil circuit heat dissipation structure according to claim 7 is characterized in that: Each of the looped pipes (11) is fixedly connected to the oil tank (1) or the cooling element (2) via a heat conducting element (15).

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