Heat sink system for a pile driver

Abstract

The application discloses a pile driver heat dissipation system and belongs to the technical field of building equipment. The heat dissipation system comprises a box body, an oil inlet pipe, an oil return pipe and a heat exchange pipe. A striking motor is arranged on the box body. The oil inlet pipe and the oil return pipe are both connected by iron pipes and hoses. One end of the oil inlet pipe is connected to the main valve of the excavator through auxiliary arms, small arms and large arms. The other end of the oil inlet pipe is communicated with the oil inlet of the striking motor. One end of the heat exchange pipe is communicated with the oil return port of the striking motor. The other end of the heat exchange pipe is communicated with the oil return pipe. The end of the oil return pipe, which is far away from the heat exchange pipe, is connected to the main oil return pipeline of the excavator through auxiliary arms, small arms and large arms. The application can prolong the service life of bearings and gears, reduce the possibility of burning out bearings, gears and other components in the box body due to high temperature in the box body without increasing the heat dissipation load of the excavator.

Description

Technical Field

[0001] This invention relates to the technical field of building equipment, and more particularly to a heat dissipation system for a pile driver. Background Technology

[0002] A pile driver is a type of pile driving and extraction machine widely used in various foundation construction projects such as urban construction, bridges, and ports. It is suitable for driving and extracting various types of steel sheet piles and steel pipe piles, and can also be used for foundation treatment operations such as concrete piles, lime piles, and sand piles.

[0003] Regarding the aforementioned related technologies, the applicant discovered that during the piling process, the piling machine uses a motor to drive an eccentric block to rotate for piling. When the eccentric block rotates, the bearings at both ends generate a large amount of heat under heavy load and high speed. Due to the large thickness of the piling machine housing material, heat dissipation is poor, so a heat dissipation device is needed to dissipate heat. Existing piling machines generally rely on the surface of the housing for heat dissipation, which is insufficient and affects the service life of internal parts such as bearings inside the housing, thus greatly reducing the service life of the piling machine. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a heat dissipation system for pile drivers.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] A heat dissipation system for a pile driver, wherein the heat dissipation system is installed on the auxiliary arm of the pile driver, the auxiliary arm being connected to the forearm via a flexible hose, and includes a housing, an oil inlet pipe, an oil return pipe, and a heat exchange pipe;

[0007] The housing is equipped with a striking motor;

[0008] One end of the oil inlet pipe is located on the auxiliary arm, and the other end of the oil inlet pipe is connected to the oil inlet of the impact motor.

[0009] The heat exchange tube is used to exchange heat with high-temperature lubricating oil. One end of the heat exchange tube is connected to the oil return port of the impact motor, and the other end of the heat exchange tube is connected to the oil return pipe. The end of the oil return pipe away from the heat exchange tube is located on the auxiliary arm.

[0010] Furthermore, the heat exchange pipe is disposed inside the casing.

[0011] Furthermore, the heat exchange tubes are arranged in an "S" shape inside the casing.

[0012] Furthermore, the heat exchange pipe is wrapped around the outside of the housing and is thermally connected to the housing.

[0013] Furthermore, the oil inlet pipe includes an oil inlet iron pipe and an oil inlet hose, and the oil return pipe includes an oil return iron pipe and an oil return hose. The oil inlet iron pipe and the oil return iron pipe are installed on the boom and arm of the excavator, and heat dissipation fins are provided on the outside of the oil inlet iron pipe and the oil return iron pipe.

[0014] Furthermore, the heat dissipation fins are arranged in a spiral pattern on the oil inlet pipe and the oil return pipe.

[0015] Furthermore, the heat dissipation fins are made of metal.

[0016] In summary, compared with the prior art, the beneficial effects of the above technical solution are:

[0017] (1) The oil in the inlet pipe is low-temperature hydraulic oil. After the low-temperature hydraulic oil flows to the impact motor and drives the impact motor, the maximum temperature of the hydraulic oil can reach 80℃, while the temperature of the lubricating oil in the tank can reach 120℃. The low-temperature hydraulic oil flows into the heat exchange pipe from the end of the heat exchange pipe. The oil in the tank is high-temperature lubricating oil. When the low-temperature hydraulic oil flows to the heat exchange pipe, the high-temperature lubricating oil and the low-temperature hydraulic oil exchange heat. The heat of the lubricating oil is transferred to the hydraulic oil and carried out of the tank by the hydraulic oil. The low-temperature hydraulic oil flows back to the excavator hydraulic oil tank through the return pipe and is circulated again by the hydraulic pump to drive the impact motor and other operations. By reducing the overall temperature inside the tank, the possibility of the bearings, gears and other parts inside the tank being burned due to excessive temperature inside the tank can be reduced.

[0018] (2) The S-shaped arrangement of the heat exchange tubes inside the box can increase the heat exchange area of ​​the low-temperature hydraulic oil inside the box, further improve the heat exchange efficiency, and achieve the purpose of reducing the temperature inside the box.

[0019] (3) After the oil undergoes heat exchange in the heat exchange pipe, it returns to the inlet / return oil pipe on the main boom. Based on the heat dissipation fins installed on the inlet / return oil pipe, the heat exchange area with the air is expanded, and the temperature of the hydraulic oil is released back into the surrounding air. This reduces the temperature of the housing without increasing the burden on the excavator's cooling system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure in Embodiment 1 of the present invention. Figure 2 ;

[0022] Figure 3 This is a cross-sectional view along the AA direction in Embodiment 1 of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection between the heat dissipation system and the piling machine in Embodiment 1 of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the heat dissipation fins in Embodiment 1 of the present invention;

[0025] Figure 6 This is a schematic diagram of the overall structure in Embodiment 2 of the present invention.

[0026] Explanation of reference numerals in the attached diagram: 1. Auxiliary arm; 2. Housing; 3. Oil inlet pipe; 31. Oil inlet iron pipe; 32. Oil inlet hose; 4. Oil return pipe; 41. Oil return iron pipe; 42. Oil return hose; 5. Heat exchange pipe; 6. Heat dissipation fins; 7. Strike motor; 8. Main arm; 9. Forearm. Detailed Implementation

[0027] The principles and features of the present invention are described below with reference to all the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0028] This invention discloses a heat dissipation system for a pile driver.

[0029] Example 1

[0030] Reference Figures 1-5 A heat dissipation system for a pile driver is provided. The heat dissipation system is installed on the auxiliary arm 1 of the pile driver. The auxiliary arm is connected to the main arm. The main arm includes a boom 8 and a forearm 9. The heat dissipation system includes a housing 2, an oil inlet pipe 3, an oil return pipe 4, and a heat exchange pipe 5.

[0031] A striking motor 7 is installed on the outside of the housing 2. One end of the oil inlet pipe 3 is located on the auxiliary arm 1, and the other end of the oil inlet pipe 3 is connected to the hydraulic oil inlet of the striking motor 7, using the oil in the oil inlet pipe 3 to drive the striking motor 7. The heat exchange pipe is used for heat exchange with high-temperature lubricating oil. One end of the heat exchange pipe 5 is connected to the hydraulic oil return port of the striking motor 7, so that the hydraulic oil after driving the striking motor 7 to move flows into the heat exchange pipe 5, and the other end of the heat exchange pipe 5 extends into the housing 2. One end of the return pipe 4 is connected to the heat exchange pipe 5, and the end of the return pipe 4 away from the heat exchange pipe 5 is located on the auxiliary arm. The auxiliary arm is equipped with a quick connector that mates with the oil inlet pipe / return pipe, and the quick connector is connected to the main arm.

[0032] It should be emphasized that the oil temperature in the oil inlet pipe only reaches a maximum of 80°C after the oil drives the impact motor, while the temperature inside the chamber can reach a maximum of 120°C. Temperature fusion is achieved through temperature difference to reduce the temperature inside the chamber. Even if the oil temperature after driving the impact motor can reach 80°C, it is still considered low compared to the oil temperature inside the chamber.

[0033] Reference Figure 3The heat exchange tube 5 is arranged in an "S" shape inside the housing 2, which can increase the heat exchange area of ​​the low-temperature hydraulic oil inside the housing 2, further improve the heat exchange efficiency, and achieve the purpose of reducing the temperature inside the housing 2.

[0034] Reference Figure 4 and Figure 5 The oil inlet pipe 3 includes an oil inlet iron pipe 31 and an oil inlet hose 32, and the oil return pipe 4 includes an oil return iron pipe 41 and an oil return hose 42. The oil inlet iron pipe 31 and the oil return iron pipe 41 are installed on the excavator's boom 8 and arm 9. Heat dissipation fins are provided on the oil inlet iron pipe 31 and the oil return iron pipe 41, without increasing the burden on the excavator's own cooling system. The heat dissipation fins 6 are spirally arranged on the oil inlet iron pipe and the oil return iron pipe. The heat dissipation fins 6 are made of metal and can be connected to the oil inlet iron pipe and the oil return iron pipe by welding, bolting, or other methods. The heat dissipation fins 6 can be made of copper, aluminum, iron, or other materials.

[0035] The implementation principle of Example 1 is as follows:

[0036] The oil in the inlet pipe 3 is low-temperature hydraulic oil. After the low-temperature hydraulic oil flows to the impact motor 7 and drives the impact motor 7 to operate, the low-temperature hydraulic oil flows from the end of the heat exchange pipe 5 into the heat exchange pipe 5. The oil in the housing 2 is high-temperature lubricating oil. When the low-temperature hydraulic oil flows to the heat exchange pipe 5, the high-temperature lubricating oil exchanges heat with the low-temperature hydraulic oil. The heat of the lubricating oil is transferred to the hydraulic oil and carried out of the housing by the hydraulic oil. The low-temperature hydraulic oil flows back to the hydraulic oil tank through the return pipe 4 and is circulated again by the hydraulic pump to drive the impact motor 7 and perform other operations. By reducing the overall temperature inside the housing 2, the possibility of the bearings, gears and other parts inside the housing 2 being burned due to excessive temperature inside the housing 2 can be reduced.

[0037] When the low-temperature hydraulic oil flows into the heat exchange pipe 5, it absorbs the heat of the lubricating oil and its own temperature rises. The heat dissipation fins 6 are spirally arranged on the oil inlet pipe 31 and the oil return pipe 41. Based on the increased heat exchange area between the heat dissipation fins 6 and the air, the temperature of the hydraulic oil is released into the surrounding air, and the temperature in the oil inlet pipe 31 and the oil return pipe 41 is reduced. When the oil-driven impact motor is activated, the oil temperature can be further reduced, thereby reducing the temperature inside the housing 2 and preventing damage to bearings, gears and other components when the temperature inside the housing 2 is too high.

[0038] Example 2

[0039] Reference Figure 6 The main difference between Example 2 and Example 1 is that the heat exchange tube 5 is positioned differently.

[0040] The heat exchange pipe 5 is wrapped around the outside of the housing 2. When the low-temperature hydraulic oil in the oil inlet pipe 3 drives the impact motor 7 to operate, the hydraulic oil flows into the heat exchange pipe 5. The oil in the heat exchange pipe 5 is low-temperature hydraulic oil. By contacting the housing 2, the purpose of heat exchange is achieved, thereby accelerating the speed at which the housing 2 dissipates heat to the outside and achieving the purpose of reducing the temperature inside the housing 2.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pile driver heat dissipation system, said heat dissipation system being mounted on a boom (1) of a pile driver, characterized in that, The utility model relates to a heat exchange device for excavator auxiliary arm, including box (2), oil inlet pipe (3), oil return pipe (4), heat exchange pipe (5); The box (2) is equipped with a percussion motor (7); One end of the oil inlet pipe (3) is arranged on the auxiliary arm (1), and the other end of the oil inlet pipe (3) is communicated with the oil inlet of the percussion motor (7); The heat exchange pipe (5) is used for heat exchange with high-temperature lubricating oil, one end of the heat exchange pipe (5) is communicated with the oil return port of the percussion motor (7), the other end of the heat exchange pipe (5) is communicated with the oil return pipe (4), and the oil return pipe (4) is arranged on the auxiliary arm away from the other end of the heat exchange pipe (5); The oil inlet pipe (3) includes an oil inlet iron pipe and an oil inlet hose, the oil return pipe (4) includes an oil return iron pipe and an oil return hose, the oil inlet iron pipe and the oil return iron pipe are arranged on the large arm and the small arm of the excavator, and heat dissipation fins (6) are arranged on the outer sides of the oil inlet iron pipe and the oil return iron pipe.

2. The pile driver heat removal system of claim 1, wherein: The heat exchange pipe (5) is arranged in the box (2).

3. The pile driver heat removal system of claim 2, wherein: The heat exchange pipe (5) is arranged in an S shape in the box (2).

4. The pile driver heat removal system of claim 1, wherein: The heat exchange pipe (5) is arranged on the outer side of the box (2) and is in heat conduction connection with the box (2).

5. The pile driver heat removal system of claim 1, wherein: The heat dissipation fins (6) are arranged in a spiral shape on the oil inlet iron pipe and the oil return iron pipe.

6. The pile driver heat removal system of claim 5, wherein: The heat dissipation fins (6) are made of metal.

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