Search

CN-121993060-A - Self-control follow-up frame of rotary drilling rig

CN121993060ACN 121993060 ACN121993060 ACN 121993060ACN-121993060-A

Abstract

The invention provides an automatic control type follow-up frame of a rotary drilling rig, which effectively solves the problems of large difficulty in aligning a sliding lug with a track, poor safety and lack of a reliable compensation mechanism for the sliding lug; the technical scheme includes that the device comprises a support frame, a sliding lug, a slewing bearing and a holding unit, wherein the sliding lug comprises a U-shaped plate with an inward opening, movable units are arranged on three side walls of the U-shaped plate, each movable unit comprises a semicircular shell, rotating shafts coaxial with the semicircular shells are fixed at two ends of the semicircular shells, the rotating shafts are hinged to the side walls of the U-shaped plate through torsion springs, wear-resistant plates are arranged at the openings of the semicircular shells, the holding unit comprises a swinging rod, one end of the swinging rod is hinged to the side edge of the support frame through torsion springs, an arc-shaped plate is fixed at the other end of the swinging rod, the arc-shaped plate is coaxial with the slewing bearing, a side rod is fixed at one end of the swinging rod, a winding wheel is arranged on the U-shaped plate at one side of the swinging rod, a steel wire rope is connected between the winding wheel and the side rod, and the rotating shafts at one end of the semicircular shells are fixed together.

Inventors

  • WANG YULING
  • LI BINGJIE
  • ZHANG JIAFAN
  • LIU CHANGCHENG

Assignees

  • 平顶山冠宏矿山技术装备有限公司

Dates

Publication Date
20260508
Application Date
20260330

Claims (10)

  1. 1. The self-control follow-up frame of the rotary drilling rig is characterized by comprising a support frame (1), a sliding lug (2), a slewing bearing and a holding unit, wherein the sliding lug (2) comprises a U-shaped plate (3) with an inward opening, movable units are arranged on three side walls of the U-shaped plate (3), each movable unit comprises a semicircular shell (4) with a semicircular opening towards the center of the U-shaped plate (3), rotating shafts (5) coaxial with the semicircular shells are fixed at two ends of the semicircular shells (4), the rotating shafts (5) are hinged on the side walls of the U-shaped plate (3) through torsion springs, the wear-resistant plates (6) are arranged at the openings of the semicircular shells (4), three wear-resistant plates (6) in the same cavity of the U-shaped plate (3) are arranged in a U shape, and a track can pass through the middle of the three wear-resistant plates (6), in an initial state, when the track is positioned in the middle of the three wear-resistant plates (6), the upper ends of the three wear-resistant plates (6) are forced to be separated, and the track is in an outward vertical state; The enclasping unit comprises a swinging rod (7), one end of the swinging rod (7) is hinged to the side edge of a supporting frame (1) through a torsion spring, an arc plate (8) is fixed to the other end of the swinging rod (7), the arc plate (8) is coaxial with a slewing bearing, when the arc plate (8) enclasps an outer ring (20) of the slewing bearing, the outer ring (20) of the slewing bearing is fixed and does not rotate, a side rod (9) is fixed to one end of the swinging rod (7) hinged to the supporting frame (1), a wire winding wheel (10) is arranged on a U-shaped plate (3) at one side of the swinging rod (7), a steel wire rope (11) is connected between the wire winding wheel (10) and the side rod (9), the wire winding wheel (10) is fixed to a rotating shaft (5) at the end of one semicircular shell (4), and when a track gradually passes through the middle of three wear plates (6), the track forces the semicircular shell (4) where the track is located to rotate through the wear plates (6), the wire winding wheel (10) can drive the side rod (9) to rotate through the wire rope (11), and finally the side rod (9) drives the side rod (8) to move to the side far away from the slewing bearing to the outer ring (20) and restore to a free rotating state.
  2. 2. The self-control follow-up frame of a rotary drilling rig according to claim 1, wherein the inside of the semicircular shell (4) is provided with a screw (12), the screw (12) is perpendicular to the wear-resisting plate (6), one end of the screw (12) far away from the wear-resisting plate (6) penetrates through the side wall of the semicircular shell (4), the screw (12) and the side wall of the semicircular shell (4) are screwed together through a thread structure, the screw (12) is provided with a first connecting rod (13) up and down, one end of the first connecting rod (13) far away from the wear-resisting plate (6) is gradually close to the screw (12) and hinged on the inner side wall of the semicircular shell (4), one end of the first connecting rod (13) close to the wear-resisting plate (6) is provided with a rectangular sliding block (14), the wear-resisting plate (6) is provided with a vertical sliding groove (15), the sliding block (14) can slide in the sliding groove (15), one end of the screw (12) close to the wear-resisting plate (6) is sleeved with a cylinder (16), two first connecting rods (17) corresponding to the first connecting rods (13) are hinged on the cylinder (16), when the first connecting rods (17) are hinged on the cylinder (16) one by one end, and the first connecting rods (17) are hinged on the middle part far away from the first connecting rod (13), the screw rod (12) moves along the axial direction with the cylinder (16) under the action of threads, the cylinder (16) drives the first connecting rods (13) to swing through the two second connecting rods (17), and the two first connecting rods (13) drive the wear-resisting plates (6) to be close to or far away from the semicircular shell (4) through the sliding blocks (14) on the first connecting rods, so that the compensation of the abrasion loss of the wear-resisting plates (6) is realized.
  3. 3. The self-control type follow-up frame of the rotary drilling rig according to claim 2, wherein the sliding block (14) is a rectangular block, a T-shaped structure is formed by arranging a bulge on the rectangular block, and the sliding groove (15) is in the form of a T-shaped groove.
  4. 4. A self-controlled follower bracket of a rotary drilling rig according to claim 2 or 3, wherein the slide block (14) is hinged with the second connecting rod (17).
  5. 5. The self-control type follow-up frame of the rotary drilling rig according to claim 4, wherein a cylinder (18) is fixed on one end of the second connecting rod (17) close to the wear plate (6), a groove matched with the cylinder (18) is formed on the surface of the rectangular block, and the cylinder (18) is hinged in the groove.
  6. 6. The self-control follow-up frame of the rotary drilling rig according to claim 2, wherein a flat plate is fixed on the outer side of the semicircular shell (4), the flat plate is parallel to the wear-resisting plate (6), a plurality of compression screws (19) penetrate through the flat plate, the compression screws (19) are in threaded connection with the flat plate, a plurality of blind holes which are in one-to-one correspondence with the compression screws (19) are formed in the wear-resisting plate (6), and the screws are pressed against the bottoms of the blind holes corresponding to the blind holes to enable the wear-resisting plate (6) to be fixed on the semicircular shell (4).
  7. 7. The self-control type follow-up frame for the rotary drilling rig according to claim 1, wherein a plurality of clamping grooves (21) are formed in the outer edge of the outer ring (20) of the rotary support, clamping blocks (22) matched with the clamping grooves (21) are formed in the arc-shaped plate (8), and when the arc-shaped plate (8) is coaxial with the rotary support, the clamping blocks (22) are clamped into the clamping grooves (21) to enable the outer ring (20) of the rotary shaft (5) to be fixed and not rotated.
  8. 8. The self-control follow-up frame of the rotary drilling rig according to claim 2, wherein the side wall of the U-shaped plate (3) is provided with a vertical abdication groove (23), and one end of the screw rod (12) far away from the wear-resisting plate (6) extends out of the U-shaped plate (3) through the abdication groove (23).
  9. 9. The self-control follow-up frame of the rotary drilling rig according to claim 1, wherein a rectangular cylinder (24) is fixed on one end of the U-shaped frame, which is close to the support, and the end of the support frame (1) is inserted into the rectangular cylinder (24), and the rectangular cylinder (24) and the support frame (1) are fixed together through a plurality of fastening pins.
  10. 10. The self-control type follow-up frame of the rotary drilling rig according to claim 9, wherein a plurality of cushion blocks (25) are fixed on one end, close to the U-shaped plate (3), of the cavity of the rectangular cylinder (24), so that the support frame (1) can be prevented from touching or extruding the screw (12) at the position.

Description

Self-control follow-up frame of rotary drilling rig Technical Field The invention relates to the technical field of rotary drilling rigs, in particular to a self-control follow-up frame of a rotary drilling rig. Background The rotary drilling rig has a considerable position in the high-end equipment manufacturing industry and is widely applied to the fields of mine drilling, petroleum drilling, geological exploration, building foundation construction and the like. The follow-up frame is used as one of key working parts of the rotary drilling rig and mainly comprises a support frame, a rotary support connected with the support frame and a sliding lug, and in the process of installing a drill rod, the follow-up frame is not welded on the drill rod in a dead mode, but is sleeved at the upper end of the drill rod through a part called the rotary support, an outer ring of the rotary support is connected with the drill rod, and an inner ring of the rotary support is connected with the follow-up frame, so that the follow-up frame can freely rotate relative to the drill rod. When the drill rod is lifted, the follow-up frame is suspended in mid-air, and an operator can only control the up-down and approximate front-back positions of the drill rod through the main winch in the cab, but cannot directly control the rotation angle of the follow-up frame. In order to align the slide lugs with the rails, the gravity and inertia of the follower rack can be used to 'you' to the correct position only through the fine movements of the elevator and the drill rod, and the process is very dependent on feel and experience. If weather factors such as windy or windy weather are superimposed again, the difficulty of aligning the slide lugs with the track is doubled. Regarding the stubborn diseases existing in the alignment process of the sliding lugs and the tracks, although the problems are generally existed in the field, some solutions exist in the industry, for example, patent document CN103696701a proposes that the sliding lugs are semi-fixed firstly, then the angles of masts or drill rods are adjusted, and finally the sliding lugs are buckled on the tracks, although the alignment problem is solved in the method, but the method is not in line with the operation habit of the industry seriously, personnel need to work aloft, in addition, a platform capable of working aloft is needed, the defects are obvious, CN111021951a realizes quick alignment by arranging a slope with guiding function at the upper end of the tracks, but in practice, the sliding lugs frequently strike the masts and the tracks in the alignment process due to the fact that the follow-up frame can swing along with the swing relative to the drill rods, the difficulty of aligning the sliding lugs on the follow-up frame with the tracks is still great, and the installation efficiency of the drill rods is low. It is emphasized that, because in dismantling the drilling rod, the drilling rod upper end hangs in the mid-air, and the follow-up frame produces the shake along with the hoist engine operation this moment, and the follow-up frame can swing at random on the drilling rod, and the faster the hoist engine rolling or the speed of unwrapping wire, the more obvious the follow-up frame's swing phenomenon, has the potential safety hazard. In addition, in the prior art, the sliding lugs are usually welded and fixed, the plates such as nylon scraping plates or wear plates are installed in the sliding lugs, and after a period of time, the plates are worn, so that the noise is loud, the precision is low, the shaking is severe, and the drill rod is damaged seriously, although patent document CN103696701a mentions that the gap between the sliding lugs and the track is automatically compensated by using a hydraulic driving contact head, so that the stability is improved, in fact, the sliding lugs are difficult to be in fact, because the follow-up frame is in high-frequency vibration in work and is not suitable for being provided with a hydraulic station or a power supply electric pump, the wear plates are replaced in the best mode compared with the prior art, but the wear plates are required to be disassembled, the maintenance efficiency is low, and timely adjustment and compensation cannot be carried out according to the site. In order to solve the problems, an automatic control type follow-up frame of a rotary drilling rig is provided. Disclosure of Invention Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the self-control follow-up frame of the rotary drilling rig, which effectively solves the problems of large difficulty in aligning the sliding lug with the track, poor safety and lack of a reliable compensation mechanism for the sliding lug. The technical scheme includes that the sliding lug comprises a U-shaped plate with an inward opening, movable units are arranged on three side walls of the U-shaped plate, each movable u