Power head reducer heat dissipation system and engineering equipment

Abstract

The utility model provides a power head reduction gear heat dissipation system and engineering equipment, this power head reduction gear heat dissipation system includes heat dissipation subassembly and drive component, heat dissipation subassembly includes lubricating oil tank, oil feed pump and reduction gear that connect gradually, and reduction gear is connected with lubricating oil tank to constitute circulating oil circuit, drive component is transmission connection with oil feed pump, and drive component is used to drive oil feed pump operation to with lubricating oil tank in the lubricating oil of reduction gear is transported to, to reduction gear is cooled down. This power head reduction gear heat dissipation system can carry out heat dissipation cooling to reduction gear, guarantees the working stability of reduction gear, and prolongs the service life of reduction gear.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a power head reducer heat dissipation system and engineering equipment. Background Technology

[0002] Rotary drilling rigs are a common type of construction machinery. The power head is the core component of a rotary drilling rig. The power head is driven to rotate by a hydraulic motor. Specifically, the hydraulic motor is connected to a reducer, which in turn is connected to the power head. When the hydraulic motor is running, it drives the power head to rotate through the reducer.

[0003] Under certain operating conditions, the power head rotates at a high speed, resulting in a heavy workload on the reducer directly connected to the power head and generating a significant amount of heat. Currently, rotary drilling rigs generally do not equip the reducer with a cooling system, making it prone to overheating. This not only affects the normal operation of the reducer but also reduces its service life. Utility Model Content

[0004] The purpose of this invention is to provide a cooling system for a power head reducer, which can dissipate heat and cool the reducer, ensure the working stability of the reducer, and extend the service life of the reducer.

[0005] This utility model provides a heat dissipation system for a power head reducer, including a heat dissipation component and a drive component. The heat dissipation component includes a lubricating oil tank, an oil pump, and a reducer connected in sequence. The reducer is connected to the lubricating oil tank to form a circulating oil circuit. The drive component is driven by the oil pump and is used to drive the oil pump to operate, so as to deliver the lubricating oil in the lubricating oil tank to the reducer, thereby cooling the reducer.

[0006] Furthermore, the heat dissipation assembly also includes a control unit and a temperature sensor. The temperature sensor is connected to the reducer and is used to detect the temperature of the lubricating oil inside the reducer. The control unit is electrically connected to the temperature sensor and the drive assembly respectively. The control unit is used to control the operation of the drive assembly based on the temperature of the lubricating oil detected by the temperature sensor, thereby controlling the operation of the oil pump.

[0007] Furthermore, the drive assembly includes a hydraulic oil tank, a hydraulic pump, a flow control valve, and a hydraulic motor connected in sequence. The hydraulic motor is connected to the hydraulic oil tank to form a circulating oil circuit. The hydraulic motor is driven by the oil pump and is used to drive the oil pump to operate. The control unit is electrically connected to the flow control valve; the control unit is used to control the opening and / or opening degree of the flow control valve according to the temperature of the lubricating oil detected by the temperature sensor.

[0008] Furthermore, the drive assembly includes a drive motor, which is connected to the oil pump and is used to drive the oil pump to operate; The control unit is electrically connected to the drive motor; the control unit is used to control the operation of the drive motor according to the temperature of the lubricating oil detected by the temperature sensor.

[0009] Furthermore, the oil pump is a gear pump.

[0010] Furthermore, a radiator is provided in the oil line between the reducer and the lubricating oil tank.

[0011] Furthermore, a check valve is provided in the oil line between the oil pump and the reducer.

[0012] Furthermore, a first filter device is provided in the oil line between the lubricating oil tank and the oil pump; and / or, a second filter device is provided in the oil line between the reducer and the lubricating oil tank.

[0013] Furthermore, the second filtration device includes a return oil filter, a hydraulic check valve, and a pressure switch. The return oil filter and the hydraulic check valve are connected in parallel. The inlet of the return oil filter and the inlet of the hydraulic check valve are both connected to the oil outlet of the reducer. The outlet of the return oil filter and the outlet of the hydraulic check valve are both connected to the oil inlet of the lubricating oil tank. The pressure switch is connected to the inlet of the return oil filter.

[0014] This utility model also provides an engineering device, including the power head reducer cooling system described above.

[0015] The power head reducer cooling system provided by this utility model uses a drive component to drive an oil pump. After the oil pump is running, it can deliver lubricating oil with a lower temperature in the lubricating oil tank to the reducer, thereby cooling the reducer. Moreover, the circulating lubricating oil can more fully lubricate the gears inside the reducer, improving the lubrication effect inside the reducer. This can ensure the working stability of the reducer and extend its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the heat dissipation system of the power head reducer in an embodiment of this utility model.

[0017] Figure 2This is a schematic diagram of the control logic of the control unit in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the cooling system of the power head reducer in another embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the control logic of the control unit in another embodiment of the present invention. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0021] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0022] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.

[0023] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a power head reducer cooling system for engineering equipment. The power head reducer cooling system includes a cooling component 1 and a drive component 2. The cooling component 1 includes a lubricating oil tank 11, an oil pump 12, and a reducer 13 connected in sequence. The reducer 13 is connected to the lubricating oil tank 11 to form a circulating oil circuit. Specifically, the lubricating oil tank 11 stores lubricating oil (specifically gear oil, which is one type of lubricating oil). The oil outlet of the lubricating oil tank 11 is connected to the oil inlet of the oil pump 12 via a pipeline. The oil outlet of the oil pump 12 is connected to the oil inlet of the reducer 13 via a pipeline. The oil outlet of the reducer 13 is connected to the oil inlet of the lubricating oil tank 11 via a pipeline, thereby forming a circulating oil circuit between the lubricating oil tank 11, the oil pump 12, the reducer 13, and the lubricating oil tank 11.

[0024] The drive assembly 2 is connected to the oil pump 12 in a transmission manner. When the drive assembly 2 is running, the power can be transmitted to the oil pump 12. The drive assembly 2 is used to drive the oil pump 12 to operate, so as to deliver the lubricating oil in the lubricating oil tank 11 to the reducer 13, thereby cooling the reducer 13. At the same time, the lubricating oil re-enters the lubricating oil tank 11 after flowing through the reducer 13, so as to dissipate heat and cool down.

[0025] The power head reducer cooling system provided in this embodiment of the utility model uses the drive component 2 to drive the oil pump 12 to operate. After the oil pump 12 is running, it can deliver the lubricating oil with a lower temperature in the lubricating oil tank 11 to the reducer 13, thereby cooling the reducer 13. Moreover, the circulating lubricating oil can more fully lubricate the gears inside the reducer 13, improving the lubrication effect inside the reducer 13. This can ensure the working stability of the reducer and extend its service life.

[0026] Furthermore, such as Figure 1 and Figure 2 As shown, in this embodiment, the heat dissipation assembly 1 further includes a control unit 14 and a temperature sensor 131. The temperature sensor 131 is connected to the reducer 13 and is used to detect the temperature of the lubricating oil inside the reducer 13. The control unit 14 is electrically connected to both the temperature sensor 131 and the drive assembly 2. The control unit 14 controls the operation of the drive assembly 2 based on the lubricating oil temperature detected by the temperature sensor 131, thereby controlling the operation of the oil pump 12, and further controlling whether the oil pump 12 delivers lubricating oil to the reducer 13 and controlling the flow rate of the lubricating oil delivered by the oil pump 12 to the reducer 13. Specifically, the control unit 14 controls the opening and closing and / or rotation speed of the drive assembly 2 based on the lubricating oil temperature detected by the temperature sensor 131, thereby controlling the opening and closing and / or rotation speed of the oil pump 12.

[0027] Specifically, this embodiment uses a control unit 14 and a temperature sensor 131 to detect the temperature of the lubricating oil inside the reducer 13. Based on this temperature sensor, the operation of the drive assembly 2 and the oil pump 12 is controlled. This precisely controls the circulation flow rate and heat dissipation of the lubricating oil drawn by the oil pump 12, ensuring that the heat dissipation of the lubricating oil matches the heat generation of the reducer 13. Consequently, the temperature of the lubricating oil inside the reducer 13 is maintained within a suitable range, improving the working stability and service life of the reducer 13. Moreover, this power head reducer cooling system can effectively ensure the stability of the internal temperature of the reducer 13 under different regional and ambient temperatures.

[0028] Furthermore, in this embodiment, the control unit 14 is a PLC controller (i.e., a programmable logic controller). Of course, in other embodiments, the control unit 14 may also be other control devices.

[0029] Furthermore, such as Figure 1 and Figure 2As shown, in this embodiment, the drive assembly 2 includes a hydraulic oil tank 21, a hydraulic pump 22, a flow control valve 23, and a hydraulic motor 24 connected in sequence. The hydraulic motor 24 is connected to the hydraulic oil tank 21 to form a circulating oil circuit. The hydraulic motor 24 is driven by the oil pump 12. Specifically, the hydraulic oil tank 21 stores hydraulic oil. The outlet of the hydraulic oil tank 21 is connected to the inlet of the hydraulic pump 22 through a pipeline. The outlet of the hydraulic pump 22 is connected to the inlet of the flow control valve 23 through a pipeline. The outlet of the flow control valve 23 is connected to the inlet of the hydraulic motor 24 through a pipeline. The outlet of the hydraulic motor 24 is connected to the inlet of the hydraulic oil tank 21 through a pipeline, thereby forming a circulating oil circuit between the hydraulic oil tank 21, the hydraulic pump 22, the flow control valve 23, the hydraulic motor 24, and the hydraulic oil tank 21. The control unit 14 is electrically connected to the flow control valve 23. The control unit 14 is used to control the opening and closing and / or opening degree of the flow control valve 23 according to the temperature of the lubricating oil detected by the temperature sensor 131, thereby controlling the opening and closing and / or speed of the hydraulic motor 24, and further controlling the opening and closing and / or speed of the oil pump 12.

[0030] Specifically, when the temperature of the lubricating oil detected by the temperature sensor 131 reaches the set value, the control unit 14 controls the flow control valve 23 to open, and at the same time the hydraulic pump 22 operates (the hydraulic pump 22 is driven by an engine or electric motor). The hydraulic pump 22 draws hydraulic oil from the hydraulic oil tank 21 and pressurizes the hydraulic oil. The pressurized hydraulic oil flows through the flow control valve 23 and enters the hydraulic motor 24, driving the hydraulic motor 24 to rotate. Then the hydraulic oil flows back to the hydraulic oil tank 21. The hydraulic motor 24 is coaxially connected to the oil pump 12. When the hydraulic motor 24 rotates, it drives the oil pump 12 to rotate, so that the oil pump 12 draws lubricating oil from the lubricating oil tank 11 for circulation. Meanwhile, the control unit 14 controls the opening of the flow control valve 23 based on the temperature of the lubricating oil detected by the temperature sensor 131. The higher the temperature of the lubricating oil detected by the temperature sensor 131, the larger the opening of the flow control valve 23 controlled by the control unit 14, resulting in a larger flow rate of hydraulic oil entering the hydraulic motor 24, a higher speed of the hydraulic motor 24, and a higher speed of the oil pump 12. This results in a larger circulating flow rate of lubricating oil drawn by the oil pump 12 and a larger heat dissipation. Conversely, the lower the temperature of the lubricating oil detected by the temperature sensor 131, the smaller the opening of the flow control valve 23 controlled by the control unit 14, resulting in a smaller flow rate of hydraulic oil entering the hydraulic motor 24, a lower speed of the hydraulic motor 24, and a lower speed of the oil pump 12. This results in a smaller circulating flow rate of lubricating oil drawn by the oil pump 12 and a smaller heat dissipation.

[0031] Furthermore, such as Figure 1 and Figure 2As shown, in this embodiment, the flow control valve 23 includes a main valve 231 and an electrically controlled pilot-operated proportional pressure reducing valve 232. The electrically controlled pilot-operated proportional pressure reducing valve 232 is connected to the main valve 231. The main valve 231 is located in the oil circuit between the hydraulic pump 22 and the hydraulic motor 24. The control unit 14 is electrically connected to the electrically controlled pilot-operated proportional pressure reducing valve 232. When the temperature of the lubricating oil detected by the temperature sensor 131 reaches the set value, the control unit 14 transmits a certain amount of control current to the electrically controlled pilot-operated proportional pressure reducing valve 232. The electrically controlled pilot-operated proportional pressure reducing valve 232 controls the main valve 231 to open, thereby allowing the hydraulic oil output by the hydraulic pump 22 to flow through the main valve 231. At the same time, the control unit 14 transmits different amounts of control current to the electrically controlled pilot-operated proportional pressure reducing valve 232, thereby causing the main valve 231 to have different opening degrees, and thus regulating the flow rate of the hydraulic oil flowing through the main valve 231.

[0032] Specifically, the electrically controlled pilot-operated proportional pressure reducing valve 232 is connected to a pilot oil line (not shown in the figure). Pilot oil in the pilot oil line flows into the electrically controlled pilot-operated proportional pressure reducing valve 232, and then enters the main valve 231, pushing the valve core of the main valve 231 to move, thus opening the main valve 231. Simultaneously, upon receiving different control current signals, the electrically controlled pilot-operated proportional pressure reducing valve 232 can output pilot oil of different pressures to the main valve 231, thereby controlling the movement distance of the valve core of the main valve 231 and thus controlling the opening degree of the main valve 231 to regulate the flow rate of hydraulic oil flowing through the main valve 231. The structure and working principle of the electrically controlled pilot-operated proportional pressure reducing valve 232 and the main valve 231 can be found in existing technology and will not be elaborated here. Of course, in other embodiments, the flow control valve 23 can also be other types of valves.

[0033] Furthermore, such as Figure 1 As shown, in this embodiment, the flow control valve 23 (main valve 231) is also located in the oil line between the hydraulic motor 24 and the hydraulic oil tank 21. That is, the flow control valve 23 is simultaneously located between the oil outlet of the hydraulic pump 22 and the oil inlet of the hydraulic motor 24, and between the oil outlet of the hydraulic motor 24 and the oil inlet of the hydraulic oil tank 21. The flow control valve 23 can simultaneously control the oil inlet and return flow of the hydraulic motor 24 (the oil inlet and return flow of the hydraulic motor 24 are generally equal). Of course, the flow control valve 23 can also control only the oil inlet flow of the hydraulic motor 24 without controlling the oil return flow. In other embodiments, the flow control valve 23 can also be located only between the oil outlet of the hydraulic pump 22 and the oil inlet of the hydraulic motor 24, in which case the flow control valve 23 only controls the oil inlet flow of the hydraulic motor 24. All these methods can achieve control of the rotational speed of the hydraulic motor 24.

[0034] like Figure 3 and Figure 4As shown, in another embodiment, the drive assembly 2 includes a drive motor 25, which is connected to the oil pump 12 via a transmission connection. Specifically, the drive motor 25 is coaxially connected to the oil pump 12, and the drive motor 25 is used to drive the oil pump 12 to operate. The control unit 14 is electrically connected to the drive motor 25; the control unit 14 is used to control the operation of the drive motor 25 based on the temperature of the lubricating oil detected by the temperature sensor 131, thereby controlling the operation of the oil pump 12. Specifically, the control unit 14 is used to control the start / stop and / or speed of the drive motor 25 based on the temperature of the lubricating oil detected by the temperature sensor 131, thereby controlling the start / stop and / or speed of the oil pump 12.

[0035] Specifically, when the temperature of the lubricating oil detected by the temperature sensor 131 reaches the set value, the control unit 14 controls the drive motor 25 to start. The drive motor 25 drives the oil pump 12 to rotate, causing the oil pump 12 to draw lubricating oil from the lubricating oil tank 11 for circulation. At the same time, the control unit 14 controls the speed of the drive motor 25 according to the temperature of the lubricating oil detected by the temperature sensor 131. The higher the temperature of the lubricating oil detected by the temperature sensor 131, the higher the speed of the drive motor 25 controlled by the control unit 14, and the higher the speed of the oil pump 12, thereby increasing the circulation flow rate of the lubricating oil drawn by the oil pump 12 and the heat dissipation. Conversely, the lower the temperature of the lubricating oil detected by the temperature sensor 131, the lower the speed of the drive motor 25 controlled by the control unit 14, and the lower the speed of the oil pump 12, thereby decreasing the circulation flow rate of the lubricating oil drawn by the oil pump 12 and the heat dissipation.

[0036] Of course, in other embodiments, the driving component 2 can also be other driving forms.

[0037] Furthermore, in this embodiment, the oil pump 12 is a gear pump. Gear pumps not only have the advantages of simple and compact structure, small size, and low cost, but are also insensitive to oil contamination and can withstand impact loads, thus facilitating maintenance and upkeep. Of course, in other embodiments, the oil pump 12 can also be other types of pumps, such as screw pumps, rotary pumps, etc.

[0038] Furthermore, such as Figure 1 and Figure 2As shown, in this embodiment, a radiator 15 is provided in the oil passage between the reducer 13 and the lubricating oil tank 11. The radiator 15 is used to cool the lubricating oil. After the lubricating oil flows through the reducer 13, its temperature rises. The heated lubricating oil is cooled by the radiator 15 and then flows back to the lubricating oil tank 11. Since the lubricating oil tank 11 itself has relatively low heat dissipation efficiency, the radiator 15 is provided to assist in cooling the lubricating oil. In other embodiments, when the heat dissipation efficiency of the lubricating oil tank 11 itself can meet the heat dissipation requirements, the radiator 15 may not be provided. In this embodiment, the radiator 15 is an air-cooled radiator. The control unit 14 is electrically connected to the radiator 15, and the control unit 14 can control the opening and closing of the radiator 15. Of course, in other embodiments, the control unit 14 may also control the heat dissipation power of the radiator 15 according to the temperature of the lubricating oil detected by the temperature sensor 131; for example, the higher the temperature of the lubricating oil detected by the temperature sensor 131, the greater the heat dissipation power of the radiator 15 controlled by the control unit 14, and vice versa, the lower the temperature of the lubricating oil detected by the temperature sensor 131, the smaller the heat dissipation power of the radiator 15 controlled by the control unit 14.

[0039] Furthermore, such as Figure 1 As shown, in this embodiment, a one-way valve 16 is provided in the oil line between the oil pump 12 and the reducer 13. The inlet of the one-way valve 16 is connected to the oil outlet of the oil pump 12, and the outlet of the one-way valve 16 is connected to the oil inlet of the reducer 13, so that the lubricating oil can only flow from the oil pump 12 to the reducer 13 in one direction, and cannot flow in the opposite direction.

[0040] Furthermore, such as Figure 1 As shown, in this embodiment, a first filter device 17 is provided in the oil line between the lubricating oil tank 11 and the oil pump 12. The first filter device 17 is used to filter the lubricating oil to prevent impurities in the lubricating oil from entering the reducer 13 and affecting its normal operation. In this embodiment, the first filter device 17 includes an oil suction filter element, which is used to filter the lubricating oil and is disposed inside the lubricating oil tank 11. Of course, in other embodiments, the first filter device 17 may also be disposed outside the lubricating oil tank 11.

[0041] Furthermore, such as Figure 1As shown, in this embodiment, a second filter device 18 is provided in the oil line between the reducer 13 and the lubricating oil tank 11. The second filter device 18 is used to filter the lubricating oil so that impurities in the reducer 13 can be intercepted and filtered after flowing out with the lubricating oil. In this embodiment, the second filter device 18 has filter element blockage protection and alarm functions. The second filtration device 18 includes a return oil filter 181, a hydraulic check valve 182, and a pressure switch 183. The return oil filter 181 includes a return oil filter element. The return oil filter 181 and the hydraulic check valve 182 are connected in parallel. The inlet of the return oil filter 181 and the inlet of the hydraulic check valve 182 are both connected to the oil outlet of the reducer 13. The outlet of the return oil filter 181 and the outlet of the hydraulic check valve 182 are both connected to the oil inlet of the lubricating oil tank 11. The pressure switch 183 is connected to the inlet of the return oil filter 181. When the return oil filter element in the return oil filter 181 becomes clogged, the pressure at the inlet of the return oil filter 181 increases, the hydraulic check valve 182 opens, and the lubricating oil flows to the lubricating oil tank 11 through the hydraulic check valve 182 to avoid oil circuit blockage affecting normal operation. At the same time, the pressure switch 183 issues an alarm signal to prompt the replacement of the filter element.

[0042] Furthermore, such as Figure 1 As shown, in this embodiment, the radiator 15 is disposed in the oil line between the second filter device 18 and the lubricating oil tank 11. That is, the lubricating oil flowing out of the reducer 13 needs to be filtered by the second filter device 18 before entering the radiator 15 for cooling. This can prevent impurities in the lubricating oil from accumulating in the radiator 15 and causing blockage and damage to the radiator 15. Of course, in other embodiments, the second filter device 18 may also be disposed in the oil line between the radiator 15 and the lubricating oil tank 11.

[0043] This utility model embodiment also provides a power head reducer heat dissipation method based on the power head reducer heat dissipation system described above, the power head reducer heat dissipation method includes: Temperature sensor 131 is used to detect the temperature of the lubricating oil inside the reducer 13; When the temperature of the lubricating oil detected by the temperature sensor 131 is lower than the set value, the control unit 14 controls the drive assembly 2 to stop operating, and the heat dissipation assembly 1 also stops working. When the temperature of the lubricating oil detected by the temperature sensor 131 is greater than or equal to a set value, the control unit 14 controls the drive assembly 2 to start and controls the rotation speed of the drive assembly 2 according to the lubricating oil temperature detected by the temperature sensor 131, thereby controlling the rotation speed of the oil pump 12, and thus controlling the flow rate of lubricating oil delivered by the oil pump 12 to the reducer 13. Specifically, the higher the temperature of the lubricating oil detected by the temperature sensor 131, the higher the rotation speed of the drive assembly 2 controlled by the control unit 14, and the higher the rotation speed of the oil pump 12, thus resulting in a larger flow rate of lubricating oil delivered by the oil pump 12 to the reducer 13, and a larger heat dissipation of the reducer 13; the lower the temperature of the lubricating oil detected by the temperature sensor 131, the lower the rotation speed of the drive assembly 2 controlled by the control unit 14, and the lower the rotation speed of the oil pump 12, thus resulting in a smaller flow rate of lubricating oil delivered by the oil pump 12 to the reducer 13, and a smaller heat dissipation of the reducer 13.

[0044] The set value can be set according to the normal operating temperature of the lubricating oil, for example, 70℃~100℃.

[0045] This utility model embodiment also provides an engineering device, including the power head reducer cooling system described above. This engineering device includes, but is not limited to, rotary drilling rigs, etc.

[0046] Furthermore, in this embodiment, the engineering equipment also includes a main hydraulic motor (not shown) and a power head (not shown). The input end of the reducer 13 is connected to the main hydraulic motor, and the output end of the reducer 13 is connected to the power head. When the main hydraulic motor is running, it drives the power head to rotate through the reducer 13. Simultaneously, the engineering equipment also includes a main hydraulic pump (not shown). The inlet of the main hydraulic pump is connected to the outlet of the hydraulic oil tank 21, the outlet of the main hydraulic pump is connected to the inlet of the main hydraulic motor, and the outlet of the main hydraulic motor is connected to the inlet of the hydraulic oil tank 21, forming a circulating oil circuit. The main hydraulic pump is used to pressurize the hydraulic oil to drive the main hydraulic motor. In this embodiment, the lubricating oil tank 11 in the heat dissipation assembly 1 and the hydraulic oil tank 21 in the drive assembly 2 are original components of the engineering equipment, while the hydraulic motor 24 in the drive assembly 2 is an added component. In addition to providing power to the hydraulic motor 24, the hydraulic pump 22 in the drive assembly 2 can also provide hydraulic power to other hydraulic components of the engineering equipment (such as outrigger cylinders). In this embodiment, the power and size of the hydraulic motor 24 are smaller than those of the main hydraulic motor.

[0047] When the engineering equipment is a rotary drilling rig, the power head rotates at a high speed when the rig is working on deep mixing piles. Specifically, deep mixing piles are a soft soil foundation reinforcement technology. They involve drilling into the foundation and using deep mixing to forcibly mix cement slurry or other chemicals with the soil, changing the soil properties and forming individual, strong, and stable piles, thereby increasing bearing capacity. In deep mixing pile operations, the power head rotates at a high speed and needs to operate continuously for extended periods. This results in a heavy workload on the reducer 13, generating significant heat. Currently, rotary drilling rigs generally do not have a cooling system for the reducer, making it prone to overheating. This not only affects the reducer's normal operation but also reduces its service life. This application addresses this issue by incorporating a cooling system for the power head reducer, effectively dissipating and cooling the reducer 13, enabling it to be well-suited for deep mixing pile operations, ensuring its operational stability, and extending its service life.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A heat dissipation system for a power head reducer, characterized in that, The device includes a heat dissipation assembly (1) and a drive assembly (2). The heat dissipation assembly (1) includes a lubricating oil tank (11), an oil pump (12), and a reducer (13) connected in sequence. The reducer (13) is connected to the lubricating oil tank (11) to form a circulating oil circuit. The drive assembly (2) includes a hydraulic oil tank (21), a hydraulic pump (22), a flow control valve (23), and a hydraulic motor (24) connected in sequence. The hydraulic motor (24) is connected to the hydraulic oil tank (21) to form a circulating oil circuit. The hydraulic motor (24) is driven by the oil pump (12) to drive the oil pump (12) to transport the lubricating oil in the lubricating oil tank (11) to the reducer (13) to cool the reducer (13). The heat dissipation assembly (1) also includes a control unit (14) and a temperature sensor (131). The temperature sensor (131) is connected to the reducer (13) and is used to detect the temperature of the lubricating oil inside the reducer (13). The control unit (14) is electrically connected to the temperature sensor (131) and the flow control valve (23) respectively. The control unit (14) is used to control the opening and closing and / or opening degree of the flow control valve (23) according to the temperature of the lubricating oil detected by the temperature sensor (131), thereby controlling the operation of the oil pump (12).

2. The power head reducer cooling system as described in claim 1, characterized in that, The oil pump (12) is a gear pump.

3. The power head reducer cooling system as described in claim 1, characterized in that, A radiator (15) is provided on the oil line between the reducer (13) and the lubricating oil tank (11).

4. The power head reducer cooling system as described in claim 1, characterized in that, A check valve (16) is provided on the oil line between the oil pump (12) and the reducer (13).

5. The heat dissipation system for the power head reducer as described in any one of claims 1-4, characterized in that, A first filter device (17) is provided on the oil line between the lubricating oil tank (11) and the oil pump (12); and / or, a second filter device (18) is provided on the oil line between the reducer (13) and the lubricating oil tank (11).

6. The power head reducer cooling system as described in claim 5, characterized in that, The second filtration device (18) includes a return oil filter (181), a hydraulic check valve (182), and a pressure switch (183). The return oil filter (181) and the hydraulic check valve (182) are connected in parallel. The inlet of the return oil filter (181) and the inlet of the hydraulic check valve (182) are both connected to the oil outlet of the reducer (13). The outlet of the return oil filter (181) and the outlet of the hydraulic check valve (182) are both connected to the oil inlet of the lubricating oil tank (11). The pressure switch (183) is connected to the inlet of the return oil filter (181).

7. An engineering device, characterized in that, Includes the power head reducer cooling system as described in any one of claims 1-6.

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