Lubricating oil circulating device for gearbox of drilling machine

Abstract

The utility model relates to a lubricating oil circulating device for a gearbox of a drilling machine, which belongs to the technical field of drilling machines, comprises a gearbox and a hydraulic motor mounted on the gearbox, and is characterized by further comprising an oil pump, a filter cup and an oil collecting box which are mounted on the surface of the gearbox, oil suction ports are formed in the surface of the gearbox; the oil suction port is communicated with the filter cup through an oil pipe I; the filter cup is communicated with the oil pump through an oil pipe II; the oil pump is communicated with the oil collecting box through an oil pipe III; and the oil collecting box outputs a plurality of oil pipes. The oil pump and the oil pipe are arranged outside the gear box to form a lubricating oil circulating device, lubricating oil can be pumped to the bearing position at the high position through the oil pump and the oil pipe, a bearing at the bearing position at the upper end of the rotating shaft of the power head can be well lubricated in time, and good work and operation of the power head are guaranteed.

Description

Technical Field

[0001] The utility model relates to a lubricating oil circulation device for a drill rig gearbox, belonging to the technical field of drill rigs. Background Art

[0002] An engineering drill rig is provided with a power head, which drives a drill pipe to drill holes. The power head is provided with a motor. Since the rotation speed of the motor is very fast, a gearbox is required to reduce the speed. After the speed reduction by the gearbox, the output speed can be suitable for the drilling work of the drill pipe. The gearbox has an input shaft and an output shaft. The input shaft is connected to the motor, and the output shaft is connected to the drill pipe. A gear transmission is arranged between the input shaft and the output shaft to reduce the speed. Bearings are required when installing the input shaft and the output shaft, so lubrication is needed. The gears in the gearbox also need lubrication during operation. The input shaft and the output shaft are vertically arranged. Therefore, one of the bearings at both ends is at a high position and the other is at a low position. The bearing at the low position is immersed in the lubricating oil and can be well lubricated. However, for the bearing at the high position, when the liquid level of the lubricating oil is not high enough, it cannot be well lubricated, which affects the operation of the power head. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a lubricating oil circulation device for a drill rig power head gearbox, so that the lubricating oil can lubricate the bearing at the high position.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is:

[0005] A lubricating oil circulation device for a drill rig power head gearbox includes a gearbox and a hydraulic motor installed on the gearbox, and is characterized in that: it further includes an oil pump, a filter cup and an oil collecting box installed on the surface of the gearbox; an oil suction port is arranged on the surface of the gearbox; a first oil pipe is used to connect the oil suction port and the filter cup; a second oil pipe is used to connect the filter cup and the oil pump; a third oil pipe is used to connect the oil pump and the oil collecting box; several oil pipes are output from the oil collecting box.

[0006] A further improvement of the technical scheme of the utility model is that: the oil collecting box outputs two oil pipes, namely a fifth oil pipe and a sixth oil pipe.

[0007] A further improvement of the technical scheme of the utility model is that: the fifth oil pipe is communicated with the upper bearing position of the input shaft; the sixth oil pipe is communicated with the upper bearing position of the output shaft.

[0008] Due to adopting the above technical scheme, the technical effects obtained by the utility model are:

[0009] The utility model sets an oil pump and an oil pipe outside the gearbox to form a lubricating oil circulation device. Through the oil pump and the oil pipe, the lubricating oil can be pumped to the bearing position at a high place, so that the bearings at the upper bearing positions on the rotating shaft of the power head can also be lubricated well in time, ensuring the good operation of the power head.

[0010] The utility model is provided with an oil collecting box in the oil circuit of the circulation system. The oil collecting box is set in a form of one inlet and multiple outlets, which can realize the lubrication of multiple bearing positions. A filter cup is set in the circulation system, which can filter the lubricating oil. Brief Description of the Drawings

[0011] Figure 1 is a three-dimensional schematic diagram of the utility model Figure 1 ;

[0012] Figure 2 is a three-dimensional schematic diagram of the utility model Figure 2 ;

[0013] Figure 3 is the front view of the utility model;

[0014] Among them, 1. Gearbox, 2. Hydraulic motor, 3. Oil pump, 4. Filter cup, 5. Oil collecting box, 6. Oil suction port, 7. Oil pipe 1, 8. Oil pipe 2, 9. Oil pipe 3, 10. Oil pipe 4, 11. Oil pipe 5. Detailed Description of the Preferred Embodiments

[0015] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the utility model will be further described below in conjunction with the specific embodiments.

[0016] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0017] The utility model is a lubricating oil circulation device for the gearbox of a drilling rig power head, which is applied to the power head of a drilling rig and is used to circulate lubricating oil to the bearing positions at a high position through an oil pump.

[0018] Such as Figure 1 , Figure 2 , Figure 3As shown in the figure, the device includes a gearbox 1 and a hydraulic motor 2 mounted on the gearbox 1. The hydraulic motor 2 serves as the input power of the gearbox 1. The gearbox 1 has an input shaft and an output shaft. The input shaft is high-speed and the output shaft is low-speed. Both the input shaft and the output shaft of the gearbox 1 are vertically arranged, and bearings are provided at both the upper and lower ends. The bearing at the lower end is directly immersed in the lubricating oil for good lubrication, while the bearing at the upper end cannot be directly lubricated well. This device can supply lubricating oil to the bearing position at the upper end.

[0019] The device also includes an oil pump 3, a filter cup 4, and an oil sump 5 mounted on the surface of the gearbox 1. The gearbox 1 is enclosed and has lubricating oil inside during operation. An oil suction port 6 is provided on the surface of the gearbox 1, and a filter cup 4 is also provided. The oil suction port 6 is connected to the filter cup 4 by a first oil pipe 7. The filter cup 4 has a filter element inside, which can filter the lubricating oil. The filter cup 4 is also connected to the oil pump 3 by a second oil pipe 8. Through the oil pump 8, the lubricating oil can be discharged from the gearbox 1 through the oil suction port 6, and then enter the oil pump 3 after being filtered by the filter cup 4. The oil pump 3 provides the power for the lubricating oil circulation. The output end of the oil pump 3 is connected to the oil sump 5 by a third oil pipe 9. Further, the oil sump 5 outputs several oil pipes, and the output end of the oil sump 5 is connected to different bearing positions through the oil pipes to achieve lubrication of the bearing positions at the upper end. Each pipeline is compactly arranged outside the outer surface of the gearbox 1.

[0020] In a specific implementation, usually two oil pipes are set for the oil sump 5 to output, namely the fourth oil pipe 10 and the fifth oil pipe 11. Further, specifically, the fourth oil pipe 10 is connected to the upper bearing position of the input shaft; the fifth oil pipe 11 is connected to the upper bearing position of the output shaft to achieve lubrication of the two upper bearing positions. After the lubricating oil lubricates the bearings at the high positions, it falls back into the gearbox, and the lubricating oil circulates continuously. The oil sump 5 realizes the splitting of the oil delivery pipeline into two.

[0021] The utility model forms a lubricating oil circulation device by setting an oil pump, which can enable the bearings at the upper bearing positions to be lubricated well in a timely manner, ensuring the good operation of the power head.

[0022] The above shows and describes the basic principles, main features, and advantages of the utility model. Those skilled in the art of this industry should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A lubricating oil circulation device for a drilling rig gearbox, comprising a gearbox (1) and a hydraulic motor (2) installed on the gearbox (1), characterized in that: It also includes an oil pump (3), a filter cup (4) and an oil collecting box (5) installed on the surface of the gearbox (1); an oil suction port (6) is arranged on the surface of the gearbox (1); a first oil pipe (7) is used to connect between the oil suction port (6) and the filter cup (4); a second oil pipe (8) is used to connect between the filter cup (4) and the oil pump (3); a third oil pipe (9) is used to connect between the oil pump (3) and the oil collecting box (5); several oil pipes are output from the oil collecting box (5).

2. The lubricating oil circulation device for a drilling rig gearbox according to claim 1, wherein: The oil collecting box (5) outputs two oil pipes, namely a fourth oil pipe (10) and a fifth oil pipe (11).

3. The lubricating oil circulation device for a drilling rig gearbox according to claim 2, wherein: The fourth oil pipe (10) is connected to the upper bearing position of the input shaft; the fifth oil pipe (11) is connected to the upper bearing position of the output shaft.

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