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CN-116658091-B - Self-adaptive clamping device and clamping method

CN116658091BCN 116658091 BCN116658091 BCN 116658091BCN-116658091-B

Abstract

The invention provides a self-adaptive clamping device and a clamping method, wherein the self-adaptive clamping device comprises a pair of mounting seats and 2 pairs of floating seats, a clamping space for clamping a drill rod is formed between opposite surfaces of the pair of mounting seats, a pair of floating grooves which are distributed up and down along the radial direction of the drill rod are formed on each mounting seat, each floating groove comprises a middle groove and a side groove which are communicated with each other, the inner wall of the middle groove is attached to a first part of the floating seat to be matched with the floating seat, the floating seat can rotate along the inner wall of the corresponding middle groove, a second part of the floating seat is fixed on the first part, a mounting groove for mounting clamping tiles is formed on the side surface of the floating seat facing the clamping space, clamping teeth for contacting with external thread buckles of the drill rod are formed on slip sheets along the radial direction of the drill rod, each side groove is used for mounting a baffle plate, and the baffle plate is used for limiting the floating seat along the axial direction of the drill rod. The invention can realize direct clamping of drill rods with different diameters under the condition of not changing slips.

Inventors

  • NIU XIAOBO
  • YANG MING
  • LI MING
  • JIANG JIE
  • LI SHUYA
  • SHAN CHENGMING

Assignees

  • 徐州徐工基础工程机械有限公司

Dates

Publication Date
20260505
Application Date
20230719

Claims (7)

  1. 1. An adaptive clamping device, comprising: A pair of mounting seats (601) and 2 pairs of floating seats (602), wherein a clamping space for clamping a drill rod is formed between opposite surfaces of the pair of mounting seats (601), and the clamping space extends along the radial direction of the drill rod; The drill rod clamping device comprises a pair of mounting seats (601), a pair of floating grooves, a pair of clamping devices and a pair of connecting rods, wherein the mounting seats (601) are far away from each other to form an open state; The inner wall of the middle groove is attached to the first part of the floating seat (602) to be matched, the floating seat (602) can rotate along the inner wall of the corresponding middle groove, the second part of the floating seat (602) is fixed on the first part, and the side surface of the second part facing the clamping space is provided with a mounting groove for mounting a clamping tile (603), the clamping tile (603) extends along the axial direction of the drill rod, and is provided with clamping teeth for contacting with an external thread buckle of the drill rod; the side groove is used for installing the baffle plate (604) and comprises a bayonet used for clamping the baffle plate (604); and the baffle plate (604) is used for limiting the floating seat (602) along the axial direction of the drill rod and limiting the rotation of the floating seat (602), is arranged corresponding to the floating seat (602), is fixed on the first part of the floating seat (602) through the locking piece, is matched with the corresponding side groove and covers the second part of the floating seat (602).
  2. 2. The adaptive clamping device according to claim 1, wherein the baffle (604) comprises: A fixed part connected with the first part of the floating seat (602) through a fastener and matched with the side groove of the floating groove; The end cover is fixed at one end of the fixing part extending out of the side groove, and a clamping groove matched with the bayonet of the side groove is formed between the end cover and the fixing part; The end cover is rotated to drive the fixed part of the baffle plate (604) to rotate in the middle groove of the floating groove, and when the bayonet of the side groove is matched with the clamping groove, the baffle plate (604) stops rotating.
  3. 3. The adaptive clamping device according to claim 1, further comprising a floating base (1) for limiting the mounting base (601), comprising: A fixed seat (101); the pin shaft (102) is rotatably arranged on the fixed seat (101) along the radial direction of the drill rod; One end of the sliding bottom plate (104) is clamped with the through groove of the lower section of the corresponding mounting seat (601), the through groove can slide along the corresponding sliding bottom plate (104) to realize an open or closed state, and the other end of the sliding bottom plate (104) is matched with the corresponding pin shaft (102); And the floating spring (103) is used for enabling the mounting seat (601) to float along the direction of the drill rod when the drill rod is tripped so as to avoid damaging the external thread buckle of the drill rod, is sleeved on the corresponding pin shaft (102) and is positioned between the corresponding fixing seat (101) and the sliding bottom plate (104).
  4. 4. The adaptive clamping device of claim 1, further comprising: the large oil cylinder (2) is used for separating the two mounting seats (601) to form an open state, the cylinder body is fixedly arranged, the piston rod of the large oil cylinder extends along the radial direction of the drill rod and is fixed on a jacking cylinder, the jacking cylinder is sleeved on the cylinder body, the end surface of the jacking cylinder far away from the cylinder body is provided with a jacking pin, and the jacking pin penetrates through one mounting seat (601) close to the jacking pin and contacts with the end surface of the other mounting seat (601); And the small oil cylinder (9) is used for enabling the two mounting seats (601) to be close to form a clamping state, the cylinder body of the small oil cylinder is fixedly arranged, and the piston rod of the small oil cylinder extends along the radial direction of the drill rod and is fixed on one mounting seat (601) far away from the large oil cylinder (2).
  5. 5. The adaptive clamping device of claim 4, further comprising: The device comprises a screw (3) and a sleeve (5), wherein the screw (3) is used for guiding a pair of mounting seats (601) and sequentially penetrates through a cylinder body fixing seat of a large oil cylinder (2), the pair of mounting seats (601) and a cylinder body fixing seat of a small oil cylinder (9); The sleeve (5) is used for limiting the position of the mounting seat (601) close to the large oil cylinder (2), is matched with the screw rod (3) and sleeved on the corresponding screw rod (3), and the sleeve (5) is positioned between the cylinder body fixing seat and the mounting seat (601) of the large oil cylinder (2); The first locking nut (4) is used for adjusting the distance between the large oil cylinder (2) and the small oil cylinder (9) so as to adjust normally closed clamping force, and is matched with one end of the screw rod (3) extending out of a cylinder body fixing seat of the large oil cylinder (2) so as to fix the cylinder body of the large oil cylinder (2) on the screw rod (3).
  6. 6. The adaptive clamping device of claim 5, further comprising: the second locking nut (8) and the clamping spring (7) are used for adjusting the clamping force of different drilling rods, and are arranged between a cylinder body fixing seat of the small oil cylinder (9) and a mounting seat (601) far away from the large oil cylinder (2); the clamping spring (7) is sleeved on the screw (3), the second locking nut (8) is in threaded connection with the screw (3), one end of the clamping spring (7) is contacted with one mounting seat (601) far away from the large oil cylinder (2), and the other end of the clamping spring is contacted with the second locking nut (8).
  7. 7. An adaptive clamping method, comprising the steps of: the piston rod of the large oil cylinder (2) stretches out to drive the jacking cylinder to move along the radial direction of the drill rod, the jacking pin pushes the installation seat (601) contacted with the jacking cylinder to move on the corresponding sliding bottom plate (104), and the pair of installation seats (601) are mutually far away to form an open state; The piston rod of the small oil cylinder (9) stretches out to drive one mounting seat (601) far away from the large oil cylinder (2) to move on a corresponding sliding bottom plate (104), a pair of mounting seats (601) are close to each other, after slip sheets (603) contact a drill rod, a floating seat (602) rotates along the inner wall of a middle groove and drives a clamping tile (603) to be self-adaptively attached to the outer surfaces of drill rods with different diameters, so that a clamping state is formed; The clamping force is adjusted to adapt to different drill rods, the second locking nut (8) sleeved on the screw rod (3) is screwed in the direction of the large oil cylinder (2), the clamping spring (7) between the second locking nut (8) and the mounting seat (601) far away from the large oil cylinder (2) is compressed, the clamping force between the pair of mounting seats (601) is increased through the elastic force change of the clamping spring (7), and the clamping requirements of drill rods with different diameters can be adapted without changing clamping tiles (603) after adjustment.

Description

Self-adaptive clamping device and clamping method Technical Field The invention belongs to the technical field of drill rod clamping, and particularly relates to a self-adaptive clamping device and a self-adaptive clamping method. Background In order to ensure the safe production of coal mines, intelligent exploitation, the requirements for advanced drilling equipment such as gas extraction, water prevention and control and the like are rapidly increased, and a coal mine tunnel drilling machine and a directional drilling machine are main equipment for drilling construction. The advanced drilling technology for gas extraction, water prevention and the like is to firstly form a pilot hole in a high-gas stratum by using a drilling machine, then to perform reaming, screen pipe feeding and the like according to actual conditions, and then to perform gas extraction after pipeline embedding, or prevent water after casing embedding. In the process, the diameters of the sieve tube, the sleeve and the drill rod are not completely the same, and pipeline pre-burying is carried out by adopting slip replacement or even manual mode. If the slips are replaced in construction, the slips are easy-damaged parts, the management of manufacturers and spare parts of construction parties is inconvenient, the conventional slips are large in size and high in cost, and pipelines are pre-buried in a manual mode, so that a great amount of time is occupied, and meanwhile, the manual and construction risks exist. Under the condition, the invention provides the self-adaptive drill rod clamping device applicable to the tunnel drilling machine. Disclosure of Invention The invention aims to provide a self-adaptive clamping device and a clamping method, and the device can realize direct clamping of drill rods with different diameters under the condition of not changing slips. In order to achieve the above purpose, the following technical scheme is adopted: An adaptive clamping device, comprising: a pair of mounting seats 601 and 2 pairs of floating seats 602, a clamping space for clamping the drill rod is formed between opposite surfaces of the pair of mounting seats 601, and the clamping space extends along the radial direction of the drill rod; a pair of mounting seats 601 are far away from each other to form an open state; a pair of mounting seats 601 are close to stones to form a clamping state, and each mounting seat 601 is provided with a pair of floating grooves which are distributed up and down along the radial direction of a drill rod, wherein the floating grooves are arranged corresponding to the floating seats 602 and comprise a middle groove and a side groove which are communicated with each other; The inner wall of the middle groove is attached to the first part of the floating seat 602 to be matched, the floating seat 602 can rotate along the inner wall of the corresponding middle groove, the second part of the floating seat 602 is fixed on the first part, and the side surface of the second part facing the clamping space is provided with a mounting groove for mounting a clamping tile 603, the clamping tile 603 extends along the radial direction of the drill rod, and is provided with clamping teeth for contacting with an external thread buckle of the drill rod; the side groove is used for installing the baffle 604 and comprises a bayonet for clamping the baffle 604; And a baffle 604, configured to limit the floating seat 602 along the axial direction of the drill pipe, and limit the rotation of the floating seat 602, and configured to correspond to the floating seat 602, and be fixed to a first portion of the floating seat 602 by a locking member, adapted to a corresponding side groove, and cover a second portion of the floating seat 602. Preferably, the baffle 604 includes: a fixing portion connected to the first portion of the floating mount 602 by a fastener and adapted to a side groove of the floating groove; The end cover is fixed at one end of the fixing part extending out of the side groove, and a clamping groove matched with the bayonet of the side groove is formed between the end cover and the fixing part; The end cap is rotated to drive the first portion of the baffle 604 to rotate in the middle slot of the floating slot, and the baffle 604 stops rotating when the bayonet of the side slot is mated with the bayonet of the card slot. Preferably, the floating base 1 is used for limiting the mounting seat 601, and comprises: A fixing base 101; the pin 102 is rotatably arranged on the fixed seat 101 along the radial direction of the drill rod; One end of the sliding bottom plate 104 is clamped with a through groove of the lower section of the corresponding mounting seat 601, and the through groove can slide along the corresponding sliding bottom plate 104 to realize an open or closed state, and the other end of the sliding bottom plate 104 is matched with the corresponding pin shaft 102; And the floating spring 103 is used f