Guide device for horizontal hole drilling

Abstract

The utility model discloses a guide device for horizontal hole drilling and relates to horizontal hole drilling. The guide device is arranged in a drill tower, is positioned between a crown block and a drill hole, is connected with a cross beam of the crown block and a drill rod of the drill tower, and is characterized by comprising a traveling tackle, a rectangular frame, a steel wire rope and an elevator, and the rectangular frame is welded on the traveling tackle; the upper ends of the steel wire ropes are connected with the cross beam, and the lower ends of the steel wire ropes are connected with the mountain; linear sliding sleeves are respectively arranged at two ends of the rectangular frame, are sleeved on the steel wire ropes and slide along the steel wire ropes; the elevator is installed on the drill rod and slides along the drill rod, and the traveling pulley is connected with the elevator. According to the utility model, the orifice, the traveling pulley and the crown block are in three points and one line, the elevator and the drill rod are prevented from swinging up and down during drilling, the elevator is guided to move along the track of a drill hole, and the high efficiency and safety of tripping are guaranteed.

Description

Technical Field

[0001] This utility model relates to horizontal hole drilling, and in particular to a guiding device for horizontal hole drilling that prevents the drill rod from swinging up and down and improves drilling safety. Background Technology

[0002] Compared to vertical drilling, horizontal drilling is more difficult. Specifically, this is reflected in the following aspects:

[0003] (1) The direction of gravity of the drill bit changes from the direction of drilling. When drilling vertical holes, the direction of gravity of the drill bit is consistent with the drilling direction, which plays a constraining role in the apex angle and azimuth; however, when drilling horizontally, the direction of gravity of the drill bit is at a 90° angle to the drilling direction, which will naturally cause the drill bit to become skewed, thus deviating from the drilling azimuth.

[0004] (2) Vertical holes can be pressurized by the drill collar, and the upper drill rod is in tension; while horizontal holes must be pressurized by the drilling machine through the drill rod to generate drilling pressure, which leads to the problem of the drill rod bending under pressure.

[0005] (3) Difficulty in drilling and pulling. When a drilling operation is completed, the drilling rig uses the winch to rotate and drive the wire rope to extract the core. In addition to overcoming the weight of the drill rod and the drilling rig itself, it also needs to overcome the friction between the drill rod and the borehole wall. Therefore, compared with vertical hole drilling, horizontal hole construction requires a larger horsepower for the same hole depth, i.e., a lower speed. During the drilling process, guide pulleys need to be installed around the borehole to change the direction of the winch wire rope tension. Similarly, it is necessary to overcome the friction between the drill rod, the drill tool and the borehole wall. Moreover, during the process of pushing the drill rod into the borehole, the drill rod often bends, and the wire rope tension is decomposed into vertical and horizontal forces, which further aggravates the burden on the drilling rig.

[0006] During the drilling process of a horizontal hole, the wire rope on the drilling rig winch changes the direction of the force acting on the drill rod through the guide pulley, that is, the "tension" becomes the "thrust". Since the hoist is generally set above the hole opening, the movement trajectory of the hoist is not on the same straight line as the drilling trajectory, which increases the drilling resistance and makes the hole wall unsafe. In addition, the up and down swing of the drill rod can easily cause safety problems. Summary of the Invention

[0007] The present invention aims to solve the problems existing in the drilling process of existing horizontal hole drills, and provides a guiding device for horizontal hole drilling that avoids the drill rod swinging up and down and improves drilling safety.

[0008] This utility model discloses a guiding device for horizontal hole drilling, installed inside the drilling tower, located between the overhead crane and the borehole, and connected to the crossbeam of the overhead crane and the drill rod of the drilling tower. The guiding device comprises a traveling pulley, a rectangular frame, steel wire ropes, and a lifting device. The rectangular frame is welded to the traveling pulley; two steel wire ropes are arranged parallel to each other between the crossbeam of the overhead crane and the lower part of the mountain at the bottom of the drilling tower, with the upper end of the steel wire rope connected to the crossbeam and the lower end connected to the mountain; a straight sliding sleeve is provided at each end of the rectangular frame, and the sleeve is fitted onto the steel wire rope and slides along the steel wire rope; the lifting device is installed on the drill rod and slides along the drill rod, and the traveling pulley is connected to the lifting device.

[0009] The steel wire rope is equipped with two rope tensioners, which are located at both ends of the steel wire rope, and a rectangular frame is located between the two rope tensioners.

[0010] This utility model relates to a guiding device for horizontal hole drilling. It has a simple structure, scientific design, and is easy to use. The steel wire rope is tightened by a rope tensioner, and the traveling pulley is stabilized by the hoist and the rectangular frame. This ensures that the hole opening, the traveling pulley, and the overhead crane are in a straight line, preventing the hoist and drill rod from swinging up and down during drilling. It also guides the hoist so that it can move along the drilling trajectory, ensuring high efficiency and safety in drilling and hoisting. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the movable trolley structure of this utility model.

[0013] Among them, 1 is the drilling tower, 2 is the overhead crane, 3 is the crossbeam, 4 is the traveling pulley, 5 is the sliding sleeve, 6 is the rectangular frame, 7 is the wire rope, 8 is the rope tensioner, 9 is the hoist, and 10 is the borehole. Detailed Implementation

[0014] Example 1: A guiding device for horizontal hole drilling, installed inside a drilling rig, located between the gantry crane and the borehole, and connected to the crossbeam of the gantry crane and the drill rod of the drilling rig. The guiding device comprises a traveling block, a rectangular frame, wire ropes, and a hoist. The rectangular frame is welded to the traveling block. Two wire ropes are arranged parallel to each other between the crossbeam of the gantry crane and the lower part of the rig's rock face, with the upper end of the wire rope connected to the crossbeam and the lower end connected to the rock face. A straight-line sliding sleeve is provided at each end of the rectangular frame, and the sleeve is fitted onto the wire rope and slides along the wire rope. The hoist is installed on the drill rod and slides along the drill rod; the traveling block is connected to the hoist. Two rope tensioners are provided on the wire rope, located at both ends of the wire rope, with the rectangular frame positioned between the two rope tensioners.

[0015] Two steel wire ropes, with a diameter of φ12.5mm or more, are fixed at both ends to the mountainside and the crossbeam of the overhead crane, respectively. The ropes are taut at both ends with rope tensioners and parallel to the borehole centerline. The traveling block is connected to the hoist, which in turn is connected to the drill pipe. Two sliding sleeves on the traveling block slide along the steel wire ropes, ensuring that the borehole opening, the traveling block, and the overhead crane are aligned, guaranteeing efficient and safe drilling operations.

Claims

1. A guiding device for horizontal hole drilling, disposed within a drilling rig, located between the gantry crane and the borehole, and connected to the crossbeam of the gantry crane and the drill rod of the drilling rig, characterized in that... The guiding device includes a traveling pulley, a rectangular frame, steel wire ropes, and a hoist. The rectangular frame is welded to the traveling pulley. Two steel wire ropes are set parallel to each other between the crossbeam of the overhead crane and the mountain at the lower end of the drilling rig. The upper end of the steel wire rope is connected to the crossbeam, and the lower end is connected to the mountain. A straight sliding sleeve is set at each end of the rectangular frame. The sliding sleeve is fitted onto the steel wire rope and slides along the steel wire rope. The hoist is installed on the drill pipe and slides along the drill pipe. The traveling pulley is connected to the hoist.

2. The guiding device for horizontal hole drilling as described in claim 1, characterized in that... The steel wire rope is equipped with two rope tensioners, which are located at both ends of the steel wire rope, and a rectangular frame is located between the two rope tensioners.

Images