Telescopic supporting leg of underground geological drilling rig

Abstract

The utility model relates to a telescopic supporting leg of an underground geological drilling rig, and belongs to the technical field of underground operation equipment. According to the technical scheme, a supporting base (8) is of an integrated structure composed of a chassis (81) and a hollow cylinder (82) fixed to the chassis (81), a screw rod (4), a transmission gear set (5) and a motor (6) are located in the hollow cylinder (82), the motor (6) is fixed to the chassis (81) and is in driving connection with the transmission gear set (5), the transmission gear set (5) is meshed with the screw rod (4), and a nut (3) is arranged on the screw rod (4); the supporting platform (1) is located above the supporting base (8), the transmission rod (2) is fixed below the supporting platform (1), the lower end of the transmission rod (2) is of a hollow structure, and the nut (3) is fixed in a hollow cavity in the lower end of the transmission rod (2). The utility model has the benefits that the support height can be accurately controlled, and the requirements of different well depths can be met.

Description

Technical Field

[0001] This utility model relates to a telescopic support leg for an underground geological drilling rig, belonging to the technical field of underground operation equipment. Background Technology

[0002] In my country, professional fields such as hydrogeology, engineering geology, environmental geology, and mineral geology rely heavily on downhole drilling technology to obtain data on underground strata, rocks, and groundwater. Downhole geological drilling is an exploration operation conducted within a wellbore. Compared to surface drilling, it is spatially limited and requires more sophisticated drilling equipment.

[0003] Traditional downhole geological drilling mainly uses tripod-type fixed support, which supports the drilling rig by direct contact between the support rod feet and the well wall. This support method has the following problems:

[0004] 1) The support height is fixed and cannot adapt to changes in well depth;

[0005] 2) The foot support is prone to movement and loosening between itself and the well wall;

[0006] 3) Due to the wellbore's control and inadequate support arrangement, excessive load is generated;

[0007] 4) When the support is tilted, the drill will tilt and become eccentric, affecting drilling accuracy.

[0008] To address the aforementioned issues, some improved solutions employ hydraulically adjustable telescopic support legs, which can extend and retract to adjust height. However, hydraulic transmission is complex, and control precision and stability are difficult to guarantee. Therefore, there is an urgent need for a retractable support leg for drilling rigs that features a reasonable structure, precise control, and stable support, in order to improve the downhole drilling working environment and ensure drilling accuracy and operational safety. Utility Model Content

[0009] The purpose of this invention is to provide a telescopic support leg for a downhole geological drilling rig, which can precisely control the support height to meet the needs of different well depths and solve the problems existing in the background technology.

[0010] The technical solution of this utility model is:

[0011] A retractable support leg for an downhole geological drilling rig includes a support platform, a transmission rod, a nut, a auger, a transmission gear set, a motor, and a support base. The support base is an integral structure consisting of a chassis and a hollow column fixed to the chassis. The auger, transmission gear set, and motor are located inside the hollow column. The motor is fixed to the chassis and is driven by the transmission gear set, which meshes with the auger. The auger is vertical and has a nut on it. The support platform is located above the support base, and the transmission rod is fixed below the support platform. The lower end of the transmission rod is hollow, and the nut is fixed inside the hollow cavity at the lower end of the transmission rod.

[0012] The lower end of the transmission rod extends into the hollow column, and the transmission rod and the hollow column are arranged concentrically.

[0013] The support platform is square, and each corner of the support platform has a bolt hole for mounting a drilling rig.

[0014] The base of the support is square, and the hollow column fixed on the base is cylindrical.

[0015] The beneficial effects of this utility model are:

[0016] 1) The use of a screw rod telescopic structure allows for precise control of the support height, meeting the needs of different well depths;

[0017] 2) Achieve multi-directional adaptive support to adapt to uneven underground ground conditions;

[0018] 3) The screw drive is stable and reliable, avoiding the problems caused by hydraulic transmission;

[0019] 4) It can effectively improve support stability;

[0020] 5) High control precision, which can significantly improve the working environment of the drilling rig;

[0021] 6) It is highly adaptable and can be widely used in downhole geological drilling operations. Attached Figure Description

[0022] Figure 1 This is the front view of the present utility model;

[0023] Figure 2 This is a top view of the present invention;

[0024] Figure 3 This is a side view of the present invention;

[0025] Figure 4 This is a cross-sectional view of the present invention;

[0026] In the diagram: 1. Support platform; 2. Transmission rod; 3. Nut; 4. Helical rod; 5. Transmission gear set; 6. Motor; 7. Power supply; 8. Support base; 9. Bolt hole; 81. Chassis; 82. Hollow column. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and examples.

[0028] See attached document Figure 1-4A retractable support leg for an underground geological drilling rig includes a support platform 1, a transmission rod 2, a nut 3, a helical rod 4, a transmission gear set 5, a motor 6, and a support base 8. The support base 8 is an integral structure consisting of a chassis 81 and a hollow column 82 fixed on the chassis 81. The helical rod 4, the transmission gear set 5, and the motor 6 are located inside the hollow column 82. The motor 6 is fixed on the chassis 81 and is driven by the transmission gear set 5. The transmission gear set 5 meshes with the helical rod 4. The helical rod 4 is vertical and has a nut 3 on it. The support platform 1 is located above the support base 8, and the transmission rod 2 is fixed below the support platform 1. The lower end of the transmission rod 2 is hollow, and the nut 3 is fixed in the hollow cavity at the lower end of the transmission rod 2.

[0029] In this embodiment, refer to the appendix Figure 1-4 The support platform 1 is square, and each corner of the support platform 1 is provided with a bolt hole 9 for installing a drilling rig. During downhole drilling operations, the drilling rig is fixed on the support platform 1.

[0030] The base 81 of the support base 8 is square, and the hollow column 82 fixed on the base 81 is cylindrical. When in use, the base 81 is fixedly installed on the ground in the well.

[0031] The motor 6 is located inside the hollow column 82 and fixed on the chassis 81. The output shaft of the motor 6 meshes with the transmission gear set 5, which drives the screw rod 4 to rotate. The nut 3 is threadedly engaged with the screw rod 4, and the nut 3 moves axially along the screw rod 4, thereby driving the transmission rod 2 and the support platform 1 to perform telescopic movements.

[0032] During operation, first fix the support base 8 at a suitable position on the underground ground, aligning the support leg with the center line of the drilling rig. Then, power on the motor 6. The motor 6 drives the auger 4 to rotate via the transmission gear set 5. The auger 4 drives the nut 3 to move up or down, thereby extending or retracting the transmission rod 2 and the support platform 1, achieving the telescopic adjustment of the support leg. After adjusting to the appropriate height, fix the support height and proceed with drilling operations.

Claims

1. A telescopic support leg for a downhole geological drilling rig, characterized in that: The system includes a support platform (1), a transmission rod (2), a nut (3), a screw rod (4), a transmission gear set (5), a motor (6), and a support base (8). The support base (8) is an integral structure consisting of a chassis (81) and a hollow column (82) fixed on the chassis (81). The screw rod (4), the transmission gear set (5), and the motor (6) are located inside the hollow column (82). The motor (6) is fixed on the chassis (81). The motor (6) is driven by the transmission gear set (5). The transmission gear set (5) meshes with the screw rod (4). The screw rod (4) is vertical and has a nut (3) on it. The support platform (1) is located above the support base (8). The transmission rod (2) is fixed below the support platform (1). The lower end of the transmission rod (2) is hollow, and the nut (3) is fixed in the hollow cavity at the lower end of the transmission rod (2).

2. The telescopic support leg of a downhole geological drilling rig according to claim 1, characterized in that: The lower end of the transmission rod (2) extends into the hollow column (82), and the transmission rod (2) and the hollow column (82) are arranged concentrically.

3. The telescopic support leg of a downhole geological drilling rig according to claim 1, characterized in that: The support platform (1) is square, and each corner of the support platform (1) is provided with a bolt hole (9) for installing a drilling rig.

4. The telescopic support leg of a downhole geological drilling rig according to claim 1, characterized in that: The base (81) of the support base (8) is square, and the hollow column (82) fixed on the base (81) is cylindrical.

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