A drill rod torque transmission mechanism

Abstract

A drill pipe torque transmission mechanism includes a gearbox including an output sleeve, a frame including two lifting pulley frames, two top drive heads, a drill pipe including multiple T-shaped locking grooves with transverse grooves and straight grooves, an upper end external joint, and a lower end internal joint. The output sleeve includes an inner ferrule and multiple locking rod blocks located on the inner wall of the inner ferrule. The frame is fixed to the rear portion of the upper end surface of the gearbox. The lifting pulley frames are symmetrically arranged at the upper end of the frame. The top drive heads are symmetrically arranged at the input ends on the left and right sides of the gearbox. The output sleeve is arranged at the center of the gearbox in a manner that vertically passes through the gearbox. The locking rod blocks are radially symmetrically arranged in the middle of the inner wall of the inner ferrule. The T-shaped locking grooves of the drill pipe are radially symmetrically arranged on the outer peripheral surface below the upper end external joint of the drill pipe. The transverse grooves are arranged on the outer wall of the drill pipe in one direction. The present invention uses the locking rod blocks of the output sleeve of the gearbox to match and connect with the T-shaped locking grooves of the drill pipe to effectively improve the construction efficiency of the drilling operation.

Description

Technical Field

[0001] The invention relates to the field of pile foundation construction, and in particular to a drill rod torque transmission mechanism. Background Art

[0002] In the process of urban construction and development, the country has actively promoted the industrialization of construction and green construction, and put forward higher requirements for construction companies. A static drilling root pile construction technology that integrates drilling, deep mixing, bottom expansion and prefabricated pile technologies has been rapidly promoted and developed. This construction technology has the function of non-soil squeezing piles that penetrate various rock and soil layers, large diameter and high bearing capacity, greatly reduces mud emissions, saves water and land, and protects the environment. Resources can be fully utilized and will replace bored piles under certain conditions in the future.

[0003] Existing static drilling rooting construction methods generally use a dual-power head drilling machine and a large dual-guide column pile frame configuration, which significantly increases the equipment procurement costs of construction companies. By installing two power heads on the two sets of guide rails of the large pile frame column, the lower end of the first power head is fixed with multiple sections of drill rods and drilling tools, and the lower end of the second power head is fixed with multiple sections of drill rods. When the first power head and its drill rods and drilling tools have drilled into the formation to a depth corresponding to the length of the connected drill rods and drilling tools, the output end of the power head is disconnected from the drill rod entering the formation and loosened, and then the power head is lifted to a certain height along the guide rails of the pile frame column. The pile frame column is then manipulated to rotate a certain angle so that the second power head and the connected drill rod are located above the multiple sections of drill rods and drilling tools that have entered the formation. The winch mechanism is then manipulated to lower the power head and its drill rod. After the drill rods are docked and locked with the drill rods entering the formation, the second power head and its drill rods and drilling tools are driven to continue drilling, lifting and stirring until the designed drilling depth is reached. Therefore, in order to reduce the cost of equipment purchase, it is necessary to develop a torque transmission mechanism for quickly connecting and locking and releasing the connection lock between the power head and the drill rod of the static drilling root pile drilling rig, to ensure that the power head drive part and the drill rod are easy to connect and disassemble, and effectively improve the operating efficiency of the static drilling root pile. Summary of the Invention

[0004] The main purpose of the present invention is to overcome the shortcomings of existing drilling construction equipment and provide a drill rod torque transmission mechanism. By adopting a method in which the locking rod block of the output sleeve of the drive unit gear box and the T-shaped locking groove of the drill rod are matched and connected and locked with each other, the drill rod of the static drilling root pile drilling rig and the output sleeve of the gear box can be quickly connected and disassembled conveniently, ensuring that the power torque of the driving unit is transmitted to the drill rod, and effectively improving the construction efficiency of the static drilling root pile.

[0005] In order to achieve the above objectives, the solution adopted by the present invention is:

[0006] A drill pipe torque transmission mechanism includes a gear box including an output sleeve, a frame including two lifting pulley frames, two top drive heads, a drill pipe including a plurality of T-shaped locking grooves with transverse grooves and straight grooves, an upper end external joint, and a lower end internal joint, wherein:

[0007] The output sleeve of the gearbox includes an inner ring and a plurality of locking rod blocks located on the inner wall of the inner ring;

[0008] Its characteristics are:

[0009] The frame is fixed to the rear of the upper end surface of the gear box; the lifting pulley frames are symmetrically arranged on the left and right sides of the upper end of the frame, and the steel wire ropes drawn from the two crane winches of the external pile frame pass through the top pulley frame and the lifting pulley frame of the pile frame respectively, so that the frame and its gear box can be lowered or lifted along the guide rail of the external pile frame;

[0010] The top drive head is symmetrically arranged at the input ends on the left and right sides of the gear box;

[0011] The output sleeve is arranged at the center of the gear box in a manner of vertically passing through the gear box; the inner ring is arranged in the through hole of the output sleeve; the lock rod block is arranged in the middle of the inner wall of the inner ring in a radially symmetrical manner;

[0012] The T-shaped locking groove of the drill pipe is arranged on the outer wall below the upper end external joint in a radially symmetrical manner; the transverse groove of the T-shaped locking groove is arranged on the outer wall of the drill pipe in one direction;

[0013] The width and height of the locking rod block of the output sleeve of the gear box are matched with the straight groove and the transverse groove of the T-shaped locking groove of the drill pipe, respectively, to ensure that the locking rod block is smoothly inserted into the straight groove of the T-shaped locking groove and locked on the transverse groove after being rotated clockwise by an angle;

[0014] When the output sleeve of the gear box is connected to the drill pipe, the gear box is controlled to move downward with the frame, and the top drive head is started by the control system to transmit power to the output sleeve of the gear box. When the locking rod block is aligned with the straight groove of the T-shaped locking groove of the drill pipe, the power is turned off to stop the rotation of the output sleeve, and the frame is controlled to continue to move downward; when the locking rod block of the output sleeve reaches the transverse groove position of the T-shaped locking groove, the output sleeve of the gear box stops moving downward, and the top drive head is started by the control system to control the output sleeve to rotate clockwise by an angle. In this way, the locking rod block enters the transverse groove of the T-shaped locking groove, thereby realizing the connection and locking of the output sleeve and the drill pipe;

[0015] When the drill pipe is disconnected from the output sleeve of the gear box, the control system starts the top drive head and manipulates the output sleeve to rotate counterclockwise by an angle, so that the locking rod block of the output sleeve enters the straight groove from the transverse groove of the T-shaped locking groove of the drill pipe, and the top drive head is closed to stop the rotation of the output sleeve; the frame and its gear box are manipulated to be lifted or lowered, so that the locking rod block is disengaged from the straight groove of the T-shaped locking groove of the drill pipe, thereby releasing the lock between the output sleeve and the drill pipe.

[0016] The present invention may be that two, three, or four locking rod blocks of the output sleeve are symmetrically arranged along the radial direction of the output sleeve, and two, three, or four T-shaped locking grooves of the drill pipe are symmetrically arranged along the radial direction of the drill pipe and are respectively adapted to the locking rod blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the drill rod torque transmission mechanism of the present invention;

[0018] Figure 2 It is a partial structural diagram of the drill rod in the drill rod torque transmission mechanism of the present invention;

[0019] Figure 3 yes Figure 1 Schematic diagram of the structure of the removed frame and drill rod;

[0020] Figure 4 yes Figure 3 A top view of

[0021] Figure 5 yes Figure 4 Middle AA section view. DETAILED DESCRIPTION

[0022] like Figure 1-5 As shown, a drill pipe torque transmission mechanism includes a gear box 212 including an output sleeve 2121, a frame 210 including two lifting pulley frames 211, two top drive heads 213, a drill pipe 23 including multiple T-shaped locking grooves 234 with transverse grooves 2342 and straight grooves 2341, an upper end external joint 231, and a lower end internal joint. The output sleeve 2121 of the gear box 212 includes an inner ring 2123 and multiple locking rod blocks 2122 located on the inner wall of the inner ring.

[0023] The frame 210 is fixed to the rear part of the upper end surface of the gear box 212; the lifting pulley frame 211 is symmetrically arranged on the left and right sides of the upper end of the frame 210, and the steel wire ropes led out from the two crane winches of the external pile frame pass through the top pulley frame and the lifting pulley frame 211 of the pile frame respectively, so that the frame 210 and its gear box 212 can be lowered or lifted along the guide rail of the external pile frame.

[0024] The top drive heads 213 are symmetrically arranged at the left and right input ends of the gear box 212 .

[0025] The output sleeve 2121 is arranged at the center of the gear box 212 in a manner of vertically passing through the gear box 212; the inner ring 2123 is arranged in the through hole of the output sleeve 2121; and the locking rod block 2122 is arranged in the middle of the inner wall of the inner ring 2123 in a radially symmetrical manner.

[0026] The T-shaped locking groove 234 of the drill rod 23 is arranged on the outer wall below the upper end external joint 231 thereof in a radially symmetrical manner; the transverse groove 2342 of the T-shaped locking groove 234 is arranged on the outer wall of the drill rod 23 in one direction.

[0027] The width and height of the locking rod block 2122 of the output sleeve 2121 of the gearbox 212 respectively match the through slot 2341 and transverse slot 2342 of the T-shaped locking slot 234 of the drill rod 23, ensuring that the locking rod block 2122 smoothly inserts into the through slot 2341 of the T-shaped locking slot 234 and locks into the transverse slot 2342 after being rotated clockwise by a certain angle. The output sleeve 2121 may have two, three, or four locking rod blocks 2122 symmetrically arranged along the radial direction of the output sleeve 2121, and the drill rod 23 may have two, three, or four T-shaped locking slots 234 symmetrically arranged along the radial direction of the drill rod 23, respectively matching the locking rod blocks 2122. This further improves the reliability of the torque transmission from the power head to the bare drill rod assembly or the mixing drill rod assembly, and effectively increases the service life of the output sleeve and the drill rod.

[0028] When the output sleeve 2121 of the gear box 212 is connected to the drill pipe 23, the gear box 212 is operated to move downward with the frame 210, and the top drive head 213 is started by the control system to transmit power to the output sleeve 2121 of the gear box 212. When the locking rod block 2122 of the output sleeve 2121 is aligned with the straight groove 2341 of the T-shaped locking groove 234 of the drill pipe 23, the power is turned off to stop the rotation of the output sleeve 2121, and the frame 210 is operated to continue to move downward; when the locking rod block 2122 reaches the position of the transverse groove 2342 of the T-shaped locking groove 234, the output sleeve 2121 of the gear box 212 is stopped from moving downward, and the top drive head 213 is started by the control system to operate the output sleeve 2121 to rotate clockwise by an angle. In this way, the locking rod block 2122 enters the transverse groove 2342 of the T-shaped locking groove 234, thereby realizing the connection and locking of the output sleeve 2121 and the drill pipe 23.

[0029] When the drill rod 23 is disconnected from the output sleeve 2121 of the gear box 212, the control system starts the top drive head 213 and manipulates the output sleeve 2121 to rotate counterclockwise by an angle, so that the locking rod block 2122 of the output sleeve 2121 enters the straight groove 2341 from the transverse groove 2342 of the T-shaped locking groove 234 of the drill rod 23, and the top drive head 213 is closed to stop the rotation of the output sleeve 2121; the frame 210 and its gear box 212 are manipulated to be lifted or lowered, so that the locking rod block 2122 is disengaged from the straight groove 2341 of the T-shaped locking groove 234 of the drill rod 23, thereby releasing the lock between the output sleeve 2121 and the drill rod 23.

[0030] The drill rod torque transmission mechanism of the present invention adopts a method in which the locking rod block of the output sleeve of the gear box of the driving part matches and connects with the T-shaped locking groove of the drill rod, which can realize the rapid connection and convenient disassembly of the drill rod of the static drilling root pile drilling rig and the output sleeve of the gear box, effectively ensuring that the power torque of the driving part is transmitted to the drill rod, and further improving the construction efficiency of the static drilling root pile.

Claims

1. A drill pipe torque transmission mechanism, comprising a gear box (212) including an output sleeve (2121), a frame (210) including two lifting pulley frames (211), two top drive heads (213), a drill pipe (23) including a plurality of T-shaped locking grooves (234) having transverse grooves (2342) and straight grooves (2341), an upper end external joint (231), and a lower end internal joint, wherein: The output sleeve (2121) of the gear box (212) comprises an inner ring (2123) and a plurality of locking rod blocks (2122) located on the inner wall of the inner ring; Its characteristics are: The frame (210) is fixed to the rear portion of the upper end surface of the gear box (212); the lifting pulley frame (211) is symmetrically arranged on the left and right sides of the upper end of the frame (210); the steel wire ropes drawn from the two hoist winches of the external pile frame pass through the top pulley frame and the lifting pulley frame (211) of the pile frame respectively, so that the frame (210) and its gear box (212) are lowered or lifted along the guide rail of the external pile frame; The top drive head (213) is symmetrically arranged at the input ends on the left and right sides of the gear box (212); The output sleeve (2121) is arranged at the center of the gear box (212) in a manner of vertically passing through the gear box (212); the inner ring (2123) is arranged in the through hole of the output sleeve (2121); and the locking rod block (2122) is arranged in the middle of the inner wall of the inner ring (2123) in a radially symmetrical manner. The T-shaped locking groove (234) of the drill rod (23) is arranged on the outer wall below the upper end external joint (231) thereof in a radially symmetrical manner; the transverse groove (2342) of the T-shaped locking groove (234) is arranged on the outer wall of the drill rod (23) in one direction; The width and height of the locking rod block (2122) of the output sleeve (2121) of the gear box (212) respectively match the straight groove (2341) and the transverse groove (2342) of the T-shaped locking groove (234) of the drill rod (23), so as to ensure that the locking rod block (2122) is smoothly inserted into the straight groove (2341) of the T-shaped locking groove (234) and is locked on the transverse groove (2342) after being rotated clockwise by an angle; When the output sleeve (2121) of the gear box (212) is connected to the drill rod (23), the gear box (212) is operated to move downward along with the frame (210), the top drive head (213) is started by the control system to transmit power to the output sleeve (2121) of the gear box (212), and when the locking rod block (2122) is aligned with the straight groove (2341) of the T-shaped locking groove (234) of the drill rod (23), the power is turned off to stop the output sleeve (2121) from rotating, and the frame (210) is operated to continue to move downward; When the locking rod block (2122) of the output sleeve (2121) reaches the position of the transverse groove (2342) of the T-shaped locking groove (234), the output sleeve (2121) of the gear box (212) is stopped from descending, the top drive head (213) is started by the control system, and the output sleeve (2121) is manipulated to rotate clockwise by an angle, so that the locking rod block (2122) enters the transverse groove (2342) of the T-shaped locking groove (234), thereby achieving a connection and locking between the output sleeve (2121) and the drill pipe (23); When the drill rod (23) is disconnected from the output sleeve (2121) of the gear box (212), the top drive head (213) is started by the control system, and the output sleeve (2121) is manipulated to rotate counterclockwise by an angle, so that the locking rod block (2122) of the output sleeve (2121) enters the straight groove (2341) from the transverse groove (2342) of the T-shaped locking groove (234) of the drill rod (23), and the top drive head (213) is closed to stop the output sleeve (2121) from rotating; the frame (210) and its gear box (212) are manipulated to be lifted or lowered, so that the locking rod block (2122) is disengaged from the straight groove (2341) of the T-shaped locking groove (234) of the drill rod (23), thereby realizing the release of the locking of the output sleeve (2121) and the drill rod (23).

2. The drill rod torque transmission mechanism according to claim 1, characterized in that Two, three, or four locking rod blocks (2122) of the output sleeve (2121) are symmetrically arranged along the radial direction of the output sleeve (2121), and two, three, or four T-shaped locking grooves (234) of the drill rod (23) are symmetrically arranged along the radial direction of the drill rod (23) and respectively adapted to the locking rod blocks (2122).

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