A variable-amplification pulley frame for rotary drilling rigs

Abstract

This utility model discloses a variable-amplification pulley frame for a rotary drilling rig, including a main column. A main winch is located on one side of the main column, and a pulley frame is fixedly mounted on the top of the main column. A main winch pulley 1, a main winch pulley 2, a main winch pulley 3, a main winch pulley 4, and a steering pulley are rotatably connected to the pulley frame. A wire rope fixing point is located below the main winch pulley 3. A power head bracket is fixedly mounted on the main column, and a power head is mounted on the power head bracket. A power head pulley is rotatably connected to the power head bracket. The main winch, main winch pulley 1, main winch pulley 2, main winch pulley 3, main winch pulley 4, steering pulley, and power head pulley are all connected by wire ropes. The variable-amplification pulley design achieves a 4-fold increase in the main winch's lifting force, meeting the high lifting force requirements of customers under the CFA method. It is easy to operate, widely applicable, and has low maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically a variable-amplification pulley frame for a rotary drilling rig. Background Technology

[0002] With the increasingly widespread application of rotary drilling rigs, new construction methods and techniques using them are becoming more common. The market demand for multi-functional rotary drilling rigs is also becoming more prevalent. Currently, in CFA (Continuous Actuation and Fiber Optic) construction methods, rotary drilling rigs require extremely high lifting force from the main winch. Most solutions currently employ enlarged main winches to meet the lifting force requirements of CFA methods. However, this approach complicates the overall design of the rotary drilling rig while satisfying the high lifting force requirement, often exceeding the customer's purchase cost. Utility Model Content

[0003] The purpose of this utility model is to provide a variable-amplification pulley frame for a rotary drilling rig to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a variable-amplification pulley frame for a rotary drilling rig, comprising a main column, a main winch on one side of the main column, a pulley frame fixedly mounted on the top of the main column, a main winch pulley 1, a main winch pulley 2, a main winch pulley 3, a main winch pulley 4 and a steering pulley rotatably connected to the pulley frame, a wire rope fixing point below the main winch pulley 3, a power head bracket fixedly mounted on the main column, a power head mounted on the power head bracket, a power head pulley rotatably connected to the power head bracket, and the main winch, main winch pulley 1, main winch pulley 2, main winch pulley 3, main winch pulley 4, steering pulley and power head pulley all connected by wire ropes.

[0005] Preferably, the wire rope exits from the main winch, winds into the second main winch pulley, winds along the pulley frame onto the first main winch pulley, winds downwards into the power head pulley, winds through the power head pulley's steering wire rope into the fourth main winch pulley, winds along the pulley frame's structure into the steering pulley, winds along the steering pulley into the third main winch pulley, winds downwards along the third main winch pulley into the power head pulley, and finally exits from the power head pulley.

[0006] Preferably, the end of the wire rope is fixedly connected to a wire rope fixing point.

[0007] Preferably, the pulley frame is provided with guide rollers, and the guide rollers correspond to the main winch pulley one, main winch pulley two, main winch pulley three, and main winch pulley four.

[0008] Compared with the prior art, the beneficial effects of this utility model are: the main winch lifting force is increased by 4 times through the variable pulley block design, which meets the customer's demand for large lifting force under the CFA method construction. It is easy to operate, widely applicable and has low maintenance cost. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] In the diagram: 1. Main column; 2. Main winch; 3. Pulley frame; 4. Main winch pulley 2; 5. Main winch pulley 1; 6. Steering pulley; 7. Main winch pulley 3; 8. Main winch pulley 4; 9. Wire rope fixing point; 10. Power head; 11. Power head pulley. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0012] Please refer to 1, an embodiment of this utility model: a rotary drilling rig variable-multiplication pulley frame, including a main column 1, a main winch 2 on one side of the main column 1, a pulley frame 3 fixedly installed at the top of the main column 1, a main winch pulley 1 5, a main winch pulley 2 4, a main winch pulley 3 7, a main winch pulley 4 8 and a steering pulley 6 rotatably connected to the pulley frame 3, a wire rope fixing point 9 below the main winch pulley 3 7, a power head bracket fixedly installed on the main column 1, a power head 10 installed on the power head bracket, a power head pulley 11 rotatably connected to the power head bracket, and the main winch 2, main winch pulley 1 5, main winch pulley 2 4, main winch pulley 3 7, main winch pulley 4 8, steering pulley 6 and power head pulley 11 are all connected by wire ropes.

[0013] The wire rope emerges from the main winch 2, winds into the main winch pulley 4, winds along the pulley frame 3 to the main winch pulley 5, winds downwards into the power head pulley 11, winds through the power head pulley 11 and winds into the main winch pulley 8, winds along the structure of the pulley frame 3 into the steering pulley 6, winds along the steering pulley 6 into the main winch pulley 7, winds downwards along the main winch pulley 7 into the power head pulley 11, and finally winds out from the power head pulley 11. By using four sets of pulleys, the lifting force of the main winch is increased by 4 times, which not only improves the lifting rate but also has a simple structure and low cost.

[0014] The end of the wire rope is fixedly connected to wire rope fixing point 9. The wire rope fixing point 9 is used to fix the end of the wire rope to ensure the stability of the connection.

[0015] The pulley frame 3 is equipped with guide rollers, which correspond to the main winch pulley 1 5, main winch pulley 2 4, main winch pulley 3 7, and main winch pulley 4 8, so as to facilitate the position restriction of the wire rope and prevent deviation.

Claims

1. A variable-amplification pulley frame for a rotary drilling rig, comprising a main column (1), characterized in that: A main winch (2) is provided on one side of the main column (1). A pulley frame (3) is fixedly provided at the top of the main column (1). The pulley frame (3) is rotatably connected to the main winch pulley 1 (5), main winch pulley 2 (4), main winch pulley 3 (7), main winch pulley 4 (8) and steering pulley (6). A wire rope fixing point (9) is provided below the main winch pulley 3 (7). A power head bracket is fixedly provided on the main column (1). A power head (10) is provided on the power head bracket. A power head pulley (11) is rotatably connected on the power head bracket. The main winch (2), main winch pulley 1 (5), main winch pulley 2 (4), main winch pulley 3 (7), main winch pulley 4 (8), steering pulley (6) and power head pulley (11) are all connected by wire rope.

2. The variable-amplification pulley frame for a rotary drilling rig according to claim 1, characterized in that: The wire rope emerges from the main winch (2), winds into the second main winch pulley (4), winds along the pulley frame (3) to the first main winch pulley (5), winds downward into the power head pulley (11), winds through the steering wire rope of the power head pulley (11) into the fourth main winch pulley (8), winds along the structure of the pulley frame (3) into the steering pulley (6), winds along the steering pulley (6) into the third main winch pulley (7), winds downward along the third main winch pulley (7) into the power head pulley (11), and finally winds out from the power head pulley (11).

3. The variable-amplification pulley frame for a rotary drilling rig according to claim 1, characterized in that: The end of the wire rope is fixedly connected to the wire rope fixing point (9).

4. The variable-amplification pulley frame for a rotary drilling rig according to claim 1, characterized in that: The pulley frame (3) is equipped with guide rollers, which correspond to the main winch pulley one (5), the main winch pulley two (4), the main winch pulley three (7), and the main winch pulley four (8).

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