Vertical all-geological hole-forming and hole-expanding drilling machine

Abstract

The utility model discloses a vertical all-geological hole-forming and hole-expanding drilling machine which comprises a carrying frame, the upper portion of the carrying frame is transversely connected with a drilling machine spinning core transmission system in a sliding mode through a concave sliding groove, and the drilling machine spinning core transmission system is detachably connected with a vertically-arranged drilling machine anti-leakage and anti-sticking power rotating pipe system. And the lower part of the carrying frame is connected with a coil pipe guide structure of the anti-leakage and anti-sticking power coil pipe system of the drilling machine. According to the vertical all-geological hole-forming and hole-expanding drilling machine provided by the utility model, the drill bit has strong cutting and tunneling capability on all geological stratums including hard rocks, so that the function of barrier-free hole-forming construction under all-geological conditions is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the full geological hole forming and hole expanding field, especially to a vertical full geological hole forming and hole expanding drilling machine. BACKGROUND

[0002] The existing large-diameter cast-in-place pile hole forming construction methods all have difficulties that are difficult to overcome:

[0003] 1) Manual hole digging: it is extremely easy to cause casualties in the presence of toxic gas, quicksand, high water level, silt and the like, and it needs to stop work for special treatment in the presence of karst caves and underground rivers.

[0004] 2) Punch pile machine hole forming: poor hole forming quality, large concrete loss, large environmental pollution, and inability to expand holes, and it needs to stop work for special treatment in the presence of hammer drop and underground rivers.

[0005] 3) Rotary drilling pile machine hole forming: general hole forming quality, certain concrete loss, and inability to expand holes, and it needs to stop work for special treatment in the presence of inclined rock, hard rock, large karst caves and underground rivers.

[0006] 4) Sinking pipe rotary drilling pile machine: inability to expand holes, and it needs to stop work for special treatment in the presence of inclined rock, hard rock, large karst caves and underground rivers.

[0007] In order to fundamentally overcome the difficulties of existing underground hole forming, after years of research and development, the "rotary pipe pressure digging pile machine" project covering patents 202110577984X, 2021105779939 and the like has passed the simulation mathematical research (a research report can be provided) in Harbin Institute of Technology. The project's engineering prototype test, technical improvement, model design, and related specification formulation are also in smooth progress. On this basis, the "vertical full geological hole forming and hole expanding drilling machine" is developed.

[0008] According to the project research report, the "rotary pipe pressure digging pile machine" can realize barrier-free construction of large-diameter hole forming under land full geological conditions, and has the purposes of low energy consumption, small pollution, high safety and fast progress in the construction process, but still needs to be improved, including:

[0009] 1) The drill bit separation equipment is complex and difficult to operate.

[0010] 2) The hole expanding equipment is fixed on the drill disc, which is easy to damage and difficult to maintain.

[0011] 3) The rotary pipe is easy to bond with concrete, which is not conducive to pipe pulling; the hoisting hole of the rotary pipe is exposed, causing excessive underground water to flow into the rotary pipe, affecting construction.

[0012] 4) When encountering very hard rock layers, the entire pile machine may be lifted.

[0013] 5) pile machine support pair of spin tube lower part is not fixed, causes spin tube to be easy to deviate; the pile machine support is separated from the crane, causes the lifting operation to be difficult. Practical new type content

[0014] The utility model discloses a vertical full-geological hole-forming and hole-expanding drilling machine which can solve the above technical problems.

[0015] To achieve the above object, the utility model provides a vertical full-geological hole-forming and hole-expanding drilling machine, including the carrier, the carrier upper portion is connected with the drilling machine rotary pressure core transmission system through the concave sliding groove horizontal sliding, the drilling machine rotary pressure core transmission system is detachably connected with the vertical arrangement drilling machine leakproof and anti-adhesion solid power rotary tube system, and the carrier lower portion is connected with the rotary tube guide structure of drilling machine leakproof and anti-adhesion solid power rotary tube system.

[0016] Further, the carrier is connected with the crane.

[0017] Further, the lower end of the drilling machine leakproof and anti-adhesion solid power rotary tube system is provided with a power rotary tube drill bit section, and the inner side of the power rotary tube drill bit section is provided with a drilling machine hole-forming and hole-expanding drill bit system; the drilling machine hole-forming and hole-expanding drill bit system includes a drill disc main body, and the drill disc main body includes drill disc inner clamping steel columns, a drill disc base plate and a base plate sharp head which are sequentially connected along an axis from top to bottom; the middle part of the drill disc inner clamping steel columns is detachably connected with a split hole expander; the drill disc base plate is connected with a drill disc connection locking mechanism which can lock the drill disc main body and the power rotary tube drill bit section located on the outer side; and the outer edge of the drill disc base plate is provided with a rotating disc outer stiffening ring.

[0018] Further, the drill disc connection locking mechanism includes a pin column and a guide support mounted on the drill disc base plate; the pin column and the drill disc base plate are connected with a pin column driving device; the sidewall of the rotating disc outer stiffening ring is provided with a first interlocking matching hole which is in sliding cooperation with the pin column; the pin column driving device includes a plurality of guide wheels which are rotatably connected to the guide support, and further includes a steel cable which is matched with the plurality of guide wheels; the two ends of the steel cable are connected with steel cable connecting rod heads, the steel cable connecting rod heads are connected with a circular rod through mounting connecting bolts, the circular rod is connected with a cross-section conversion arc-shaped plate, and the cross-section conversion arc-shaped plate is provided with at least two pin columns.

[0019] Further, the drill disc inner clamping steel column comprises a clamping groove transversely penetrating the middle part thereof; an entry clamping mouth is arranged at the upper end of the drill disc inner clamping steel column, and the entry clamping mouth is in communication with the upper part of the clamping groove; the split-type hole expanding machine is transversely arranged in the clamping groove; the split-type hole expanding machine comprises a machine shell which is detachably connected with the middle part of the drill disc inner clamping steel column, a bidirectional push-pull inner screw cylinder is rotationally connected in the machine shell, two symmetrically arranged push rod screw segments are threadedly connected with the bidirectional push-pull inner screw cylinder, a push rod square segment, a push rod cross section conversion plate and a push rod wedge head are sequentially connected at one end of the push rod screw segment, and a first cutter is arranged on the push rod wedge head; the push rod square segment is in sliding fit with the end part of the bidirectional push-pull inner screw cylinder, the push rod cross section conversion plate, the push rod wedge head and the first cutter are all located outside the bidirectional push-pull inner screw cylinder; the split-type hole expanding machine further comprises a first cutter telescopic transmission mechanism; the first cutter telescopic transmission mechanism comprises a middle transmission helical gear and a rotary push piece helical gear transmission disc which are engaged with each other; the rotary shaft of the middle transmission helical gear is in rotational fit with the machine shell and extends out of the machine shell; the rotary push piece helical gear transmission disc is arranged in the middle part of the bidirectional push-pull inner screw cylinder and is coaxially fixedly connected with the bidirectional push-pull inner screw cylinder.

[0020] Further, the drill rig anti-leakage and anti-sticking power rotary tube system comprises a power rotary tube joint segment, the power rotary tube joint segment is detachably connected with the drill rig rotary core transmission system; a power rotary tube standard segment is connected between one end of the power rotary tube joint segment and the power rotary tube drill bit segment; the power rotary tube standard segment comprises a first main body steel tube, an inner lining anti-sticking tube is sleeved on the inner wall of the first main body steel tube; a toothed portion is arranged on the end of the power rotary tube drill bit segment away from the power rotary tube standard segment; a hole expanding and soil discharging hole and a hole expanding machine matching hole are arranged on the side wall of the power rotary tube drill bit segment, and the first cutter of the split-type hole expanding machine is telescopically matched with the hole expanding machine matching hole; an inner lining steel ring is arranged on the inner wall of the joint between the power rotary tube standard segment and the power rotary tube drill bit segment.

[0021] Further, the drill rig rotary core transmission system comprises a follow-up platform and a rotary core transmission ring which are arranged above and below respectively and are rotationally connected with each other; a power rotary tube joint segment mounting portion is arranged on the rotary core transmission ring; a wide spiral convex portion is arranged on the outer side wall of the rotary core transmission ring, a plurality of outer teeth are arranged on the wide spiral convex portion along the length direction thereof; a clamping slide block support is further arranged on the follow-up platform in sliding connection, at least two clamping slide blocks are arranged on the clamping slide block support and are arranged around the rotary core transmission ring, and a clamping slide block thread is arranged on the clamping slide block and is matched with the wide spiral convex portion; a motor and a transmission are mounted on the follow-up platform, the motor and the transmission are linked with a gear transmission shaft, and the gear transmission shaft is engaged with the outer teeth of the wide spiral convex portion.

[0022] Further, the radial sliding fit between the occlusal slider and the occlusal slider support along the spinning core transmission ring, the occlusal slider support is provided with occlusal slider driving structure matched with the occlusal slider; the occlusal slider support includes an intermediate substrate located outside the occlusal slider, the intermediate substrate is provided with a slider sleeve matched with the side wall of the occlusal slider in sliding mode, and a pre-pressing elastic element is arranged between the back side of the occlusal slider and the intermediate substrate; the back side of the occlusal slider is provided with a U-shaped pull plate, the U-shaped pull plate passes through the intermediate substrate and the two are in sliding fit; the occlusal slider driving structure includes a push-pull device mounted on the intermediate substrate, and the power output end of the push-pull device is connected with a plug plate, the plug plate includes a plug plate thick section, a plug plate inclined section and a plug plate thin section arranged in sequence, and the plug plate thin section passes through the U-shaped pull plate; the intermediate substrate is provided with a U-shaped guide portion matched with the plug plate thick section in sliding mode.

[0023] Further, the intermediate substrate is at least two, and the occlusal slider support further includes an annular sleeve beam, and each intermediate substrate is connected with the annular sleeve beam; the annular sleeve beam includes at least a pair of slidable U-shaped sleeve beams arranged symmetrically and in parallel, and the slidable U-shaped sleeve beam is matched with the concave sliding groove of the carrier in sliding mode.

[0024] Further, the follow-up platform includes a platform panel, and a square annular ring is connected at the circular hole in the middle of the platform panel; the inner side of the spinning core transmission ring is provided with an annular protrusion, the annular protrusion is located below the square annular ring and the first ball is arranged between the two; further including a U-shaped limiting clamp, the upper and lower ends of the U-shaped limiting clamp are located above the square annular ring and below the annular protrusion respectively; the upper end of the U-shaped limiting clamp is connected with the square annular ring; a sliding sleeve is connected on the platform panel; the occlusal slider support is provided with a vertical positioning sliding rod, and the positioning sliding rod is matched with the sliding sleeve in sliding mode.

[0025] Advantages

[0026] Compared with the prior art, the vertical full-geological hole-forming and hole-expanding drilling machine has the following advantages:

[0027] 1. The drill bit has strong cutting and tunneling capacity for all geological layers including hard rock, thereby realizing the function of unobstructed hole-forming construction under full-geological conditions.

[0028] 2. The split hole-expanding machine can be quickly positioned or separated to realize the hole-expanding function.

[0029] 3. The drill disc connection and locking mechanism can realize simple separation of the drill disc system and the rotary pipe at the hole bottom by pulling the separation pull ring of the drill disc connection and locking mechanism through the lifting hook, and the maintenance is convenient.

[0030] 4. The power rotary pipe standard section includes a first main body steel pipe, and an inner lining anti-sticking cylinder is sleeved on the inner wall of the first main body steel pipe to form a composite rotary pipe. The inner lining anti-sticking cylinder is made of plastic material. Since plastic and concrete are oily and alkaline respectively, they cannot be bonded with each other, and have good leakage prevention effect.

[0031] 5. The swivel tube can transmit huge swivel pressure and pull-out force, forming a perfect protective wall for the borehole wall and providing perfect internal space for construction.

[0032] 6. Through the cooperation of the connector convex plate and the connector recess, a quick and reliable connection and separation can be achieved between the power rotary drill bit section and the power rotary standard section, as well as between adjacent power rotary standard sections.

[0033] 7. The core drive system of the drilling rig can provide powerful spinning power for the swirl tube, and is easy to operate. When dealing with ultra-hard formations, a split drilling method can be adopted.

[0034] 8. The motor and gearbox are linked to the outer teeth of the spinning core drive ring through the gear drive shaft, which makes the spinning core drive ring rotate. The wide spiral protrusion of the spinning core drive ring is engaged with the thread of the biting slider. When the spinning core drive ring rotates relative to the biting slider, the thread of the biting slider can drive the spinning tube to rise and fall, which can greatly reduce the speed and amplify the power, thereby providing a strong spinning power to the spinning tube.

[0035] 9. The spinning core drive ring and follow-up platform both adopt a hollow design, leaving space for a series of construction actions such as spun pipe removal. At the same time, the spinning core drive system of this drilling rig can achieve sliding displacement by matching with the external sliding groove through at least one pair of sliding U-shaped sleeve beams, making the pipe connection process simple and quick.

[0036] 10. This system can achieve separate drilling when dealing with ultra-hard strata, solving the problem of jacking up pile drivers in extremely hard rock formations.

[0037] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A top view of a vertical all-geological drilling rig;

[0040] Figure 2 This is a front view of a vertical all-geological drilling and borehole leading rig.

[0041] Figure 3 This is a side view of a vertical all-geological drilling and borehole leading rig;

[0042] Figure 4 Side view of the drill rig hole making reamer system;

[0043] Figure 5 Top view of the drill rig hole making reamer system;

[0044] Figure 6 Bottom view of the drill head body;

[0045] Figure 7 Frontal cross-sectional view of the drill head body;

[0046] Figure 8 Frontal cross-sectional view of the split reamer;

[0047] Figure 9 Hoisting schematic of the split reamer;

[0048] Figure 10 Top view of the drill head connection locking mechanism;

[0049] Figure 11 Frontal view of the drill head connection locking mechanism;

[0050] Figure 12 Top view of the drill head body connected to the power auger bit segment via the drill head connection locking mechanism;

[0051] Figure 13 Frontal view of the drill rig leak-proof and stick-proof power auger system;

[0052] Figure 14 Frontal view of the power auger standard segment;

[0053] Figure 15 Cross-sectional view of the power auger standard segment;

[0054] Figure 16 Frontal view of the power auger bit segment;

[0055] Figure 17 Cross-sectional view of the power auger bit segment;

[0056] Figure 18 Frontal view of the drill rig flow forming core drive system;

[0057] Figure 19 Side view of the drill rig flow forming core drive system;

[0058] Figure 20 Top view of the drill rig flow forming core drive system;

[0059] Figure 21 A-A view of Figure 20

[0060] ​Figure 22 for Figure 21 A magnified view of a portion of the image;

[0061] Figure 23 This is a top view of the spinning core drive ring;

[0062] Figure 24 This is a front view of the spinning core drive ring;

[0063] Figure 25 This is a top view of the servo platform;

[0064] Figure 26 This is a top view of the biting slider bracket;

[0065] Figure 27 for Figure 26 A partial sectional view;

[0066] Figure 28 This is a side view of the bite slider bracket;

[0067] Figure 29 for Figure 28 A magnified view of a portion of the image;

[0068] Figure 30 for Figure 26 BB view. Detailed Implementation

[0069] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0070] Example

[0071] The specific embodiments of this utility model are as follows: Figures 1 to 30 As shown, a vertical all-geological drilling and borehole enlargement rig includes a carrier frame 7. A drilling rig spinning core transmission system 10 is laterally slidably connected to the upper part of the carrier frame 7 via a concave sliding groove 731. The drilling rig spinning core transmission system 10 is detachably connected to a vertically arranged drilling rig anti-leakage and anti-adhesion power spinning pipe system 5. A spinning pipe guide structure for the drilling rig anti-leakage and anti-adhesion power spinning pipe system 5 is connected to the lower part of the carrier frame 7. In this embodiment, the spinning pipe guide structure includes at least two sliding clamp mechanisms 783, the specific structure of which has been disclosed in patent application CN2023110650541. Each sliding clamp mechanism 783 is arranged around the centerline of the drilling rig anti-leakage and anti-adhesion power spinning pipe system 5, guiding the lifting and rotation of the drilling rig anti-leakage and anti-adhesion power spinning pipe system 5.

[0072] A crane 101 is connected to the carrier frame 7. In addition, the carrier frame 7 is connected to multiple carrier legs 8, which include lateral telescopic structures and vertical telescopic structures, enabling it to lift the entire carrier frame 7. The carrier frame 7 is also connected to steering wheels and directional wheels, and does not have its own power source for movement; it relies on other power sources to move it.

[0073] The lower end of the drilling rig leak-proof and anti-sticking power swivel system 5 is provided with a power swivel drill bit section 54, and the inner side of the power swivel drill bit section 54 is provided with a drilling rig hole-forming reamer system 6.

[0074] The drilling rig hole-forming reamer system 6 comprises a drill disc body 61, which comprises a drill disc inner clamping steel column 611, a drill disc base plate 612 and a base plate sharp head 613 connected in sequence along the axis from top to bottom. A detachable reamer 62 is detachably connected to the middle part of the drill disc inner clamping steel column 611. The drill disc base plate 612 is connected with a drill disc connection locking mechanism 63 capable of locking the drill disc body 61 and the power swivel drill bit section 54 located on the outer side.

[0075] The outer edge of the drill disc base plate 612 is provided with a rotating disc outer reinforcing ring 617. The sidewall of the drill disc inner clamping steel column 611 is provided with a lifting hole 616. During installation, the power swivel drill bit section 54 is sleeved on the outer side of the rotating disc outer reinforcing ring 617.

[0076] The base plate sharp head 613 is located in the middle of the bottom surface of the drill disc base plate 612. The outer side of the drill disc base plate 612, where the base plate sharp head 613 is located, is provided with a plurality of soil outlet holes 610, a hob hole 619 and a second cutter 6192. The hob hole 619 is rotatably connected with a hob 6191. The soil outlet holes 610 and the hob 6191 are arranged along the radial direction of the drill disc base plate 612.

[0077] The drill disc connection locking mechanism 63 comprises a pin column 632 and a guide support 631 installed on the drill disc base plate 612. The pin column 632 is connected with a pin column driving device and the drill disc base plate 612. The sidewall of the rotating disc outer reinforcing ring 617 is provided with a first interlocking profile hole 618 which is in sliding fit with the pin column 632. The sidewall of the power swivel drill bit section 54 is provided with a second interlocking profile hole 547 which is matched with the first interlocking profile hole 618. When the pin column 632 passes through the first interlocking profile hole 618 of the rotating disc outer reinforcing ring 617 and the second interlocking profile hole 547 of the power swivel drill bit section 54 at the same time, the drill disc body 61 and the power swivel drill bit section 54 located on the outer side thereof are locked with each other.

[0078] The pin column driving device comprises three guide wheels 637 rotatably connected to the guide support 631, and a steel cable 636 matched with the guide wheels 637. In this embodiment, the connecting line of the three guide wheels 637 is in the shape of an isosceles triangle. The steel cable 636 is bent to form a separation pull ring 6361 by passing around the lower sides of the two side guide wheels 637 and the upper side of the middle guide wheel 637.

[0079] The steel cable 636 is connected with a steel cable connecting rod head 634 at both ends, and the steel cable connecting rod head 634 is connected with a circular rod 633 through a mounting connecting bolt 635. The cross section of the circular rod 633 is a straight rod in a circular shape, which is arranged along the radial direction of the drilling disc base plate 612. The guide support 631 is located inside the drilling disc inner clamping steel column 611, and the middle part of the steel cable connecting rod head 634 penetrates through the side wall of the drilling disc inner clamping steel column 611 and is in sliding fit with the drilling disc inner clamping steel column 611. The circular rod 633 is connected with a cross section conversion arc plate 6331, and the cross section conversion arc plate 6331 is provided with at least two pin columns 632.

[0080] The drilling disc inner clamping steel column 611 includes a clamping groove 615 penetrating through the middle part in the transverse direction. The drilling disc inner clamping steel column 611 is provided with an entering clamping mouth 614 at the upper end, and the entering clamping mouth 614 is in communication with the upper part of the clamping groove 615. The split type hole expanding machine 62 is arranged in the clamping groove 615 in the transverse direction.

[0081] The split type hole expanding machine 62 includes a machine shell 621 which is detachably connected with the clamping groove 615 in the middle part of the drilling disc inner clamping steel column 611. The machine shell 621 is rotatably connected with a bidirectional push-pull inner screw cylinder 623. The two ends of the bidirectional push-pull inner screw cylinder 623 are provided with circular clamping support plates 6232 which protrude from the side wall of the bidirectional push-pull inner screw cylinder 623. The machine shell 621 is provided with a circular clamping groove 6211, and the circular clamping support plates 6232 are located in the circular clamping groove 6211 and are in rotational fit with the circular clamping groove 6211, so as to prevent the bidirectional push-pull inner screw cylinder 623 from moving along the axial direction of the machine shell 621.

[0082] The bidirectional push-pull inner screw cylinder 623 is threadedly connected with two symmetrically arranged push rod screw segments 625. One end of the push rod screw segment 625 is sequentially connected with a push rod square segment 6272, a push rod cross section conversion plate 6271 and a push rod wedge head 627. The push rod wedge head 627 is provided with a plurality of first cutters 626. The push rod square segment 6272 is in guided sliding fit with the square hole at the end of the bidirectional push-pull inner screw cylinder 623. The push rod cross section conversion plate 6271, the push rod wedge head 627 and the first cutters 626 are all located outside the bidirectional push-pull inner screw cylinder 623. The push rod cross section conversion plate 6271 has a cross section larger than the square hole at the end of the bidirectional push-pull inner screw cylinder 623, so as to play a limiting role. The split type hole expanding machine 62 further includes a first cutter telescopic transmission mechanism.

[0083] The first cutter telescopic transmission mechanism includes an intermediate transmission helical gear 622 and a rotary push piece helical gear transmission disc 6231 which are in engagement. The rotating shaft of the intermediate transmission helical gear 622 is in rotational fit with the machine shell 621 and protrudes out of the machine shell 621. The rotary push piece helical gear transmission disc 6231 is arranged in the middle part of the bidirectional push-pull inner screw cylinder 623 and is fixedly connected with the bidirectional push-pull inner screw cylinder 623 in coaxial lines.

[0084] The split-type hole-expanding machine 62 is hoisted by the lifting support 65 and slid into the bottom of the clamping groove 615 from top to bottom, and then the rotation of the rotating shaft of the intermediate transmission bevel gear 622 driven by the motor 64 installed in the lifting support 65 can make the two symmetrically arranged push rod screw segments 625 simultaneously extend outward from the retracted state and pass through the hole-expanding machine matching holes 549 on the sidewalls of the power spiral drill bit segment 54, and the relative positions of the split-type hole-expanding machine 62 and the power spiral drill bit segment 54 are limited by the hole-expanding machine matching holes 549. With the rotation of the power spiral drill bit segment 54 at the lower end of the spiral, the lower end of the power spiral drill bit segment 54 drills a hole, and the split-type hole-expanding machine 62 also rotates, and the first cutter 626 protruding from the sidewall of the power spiral drill bit segment 54 plays a role in hole expansion. The stone and soil can enter the inside of the power spiral drill bit segment 54 from the hole-expanding soil discharge hole 548. The lifting support 65 and the motor 64 can be separated from the split-type hole-expanding machine 62.

[0085] (1) The drill disc main body 61 is connected with the power spiral drill bit segment 54 of the spiral through the drill disc connection locking mechanism 63, and obtains the rotary pressure transmitted by the spiral. The hob 6191 installed on the drill disc base plate 612 first cracks the rock, and then the second cutter 6192 cuts the rock, and the slag is discharged to the inner cavity of the spiral through the soil discharge hole 610. Thus, the drill bit has strong cutting and excavation capacity for all geological layers including hard rock, thereby realizing the function of unobstructed hole forming construction under all geological conditions.

[0086] (2) The split-type hole-expanding machine 62 can be hoisted into automatic clamping connection with the drill disc main body 61 when hole expansion is needed. The push-pull mechanism of the split-type hole-expanding machine 62 is controlled to push out the hole-expanding push rod and connect with the spiral, and the rotary pressure transmitted by the spiral is used to realize the hole expansion function.

[0087] The process of hole expansion: the spiral drills to the bottom of the hole expansion segment - the bottom of the spiral is lifted to the top of the hole expansion segment - the split-type hole-expanding machine 62 is hoisted into position - the rotary pressure of the spiral and the pushing pressure of the hole-expanding machine are started at the same time - the cutter head of the split-type hole-expanding machine 62 cuts the rock of the hole expansion segment under the action of rotary pressure and horizontal pushing force - the slag is discharged to the inner cavity of the spiral through the hole-expanding soil discharge hole on the sidewall of the power spiral drill bit segment 54 - the spiral is rotated from the top of the hole expansion segment to the bottom of the hole expansion segment - the power of the spiral is turned off and the hole-expanding push rod is retracted - the split-type hole-expanding machine 62 is hoisted out - the hole expansion is completed.

[0088] The drill disc connection locking mechanism 63: the drill disc main body 61 and the spiral are locked and connected on the ground, and after the drilling is completed, the split-type hole-expanding machine 62 is hoisted into position - the rotary pressure of the spiral and the pushing pressure of the hole-expanding machine are started at the same time - the cutter head of the split-type hole-expanding machine 62 cuts the rock of the hole expansion segment under the action of rotary pressure and horizontal pushing force - the slag is discharged to the inner cavity of the spiral through the hole-expanding soil discharge hole on the sidewall of the power spiral drill bit segment 54 - the spiral is rotated from the top of the hole expansion segment to the bottom of the hole expansion segment - the power of the spiral is turned off and the hole-expanding push rod is retracted - the split-type hole-expanding machine 62 is hoisted out - the hole expansion is completed.

[0089] The drill rig leak-proof and anti-sticking power rotary tube system 5 further comprises a power rotary tube joint segment 51, an upper segment of the power rotary tube joint segment 51 is sleeved between the rotary tube core transmission ring 1 of the drill rig rotary tube core transmission system 10 and is detachably connected through a plurality of mounting screws. A power rotary tube standard segment 52 is connected between one end of the power rotary tube joint segment 51 and a power rotary tube drill bit segment 54. The power rotary tube standard segment 52 comprises a first main body steel pipe 521, and an inner lining anti-sticking cylinder 526 is sleeved on an inner wall of the first main body steel pipe 521, and the inner lining anti-sticking cylinder 526 is made of plastic. The power rotary tube drill bit segment 54 is provided with a toothed section 546 at an end away from the power rotary tube standard segment 52.

[0090] The lower end of the power rotary tube joint segment 51 and the power rotary tube standard segment 52 adjacent thereto are detachably connected through an automatic connection mechanism 50. The structure of the automatic connection mechanism 50 is disclosed in the document with the patent number 2021105779892.

[0091] The power rotary tube drill bit segment 54 is provided with a hole expanding and soil discharging hole 548 and a hole expanding machine matching hole 549 on a side wall thereof, and a first cutter 626 of a split hole expanding machine 62 is telescopically matched with the hole expanding machine matching hole 549. In the embodiment, the edges of the hole expanding and soil discharging hole 548 and the hole expanding machine matching hole 549 are connected in communication. The hole expanding machine matching hole 549 comprises a hole wall horizontal pressure bearing edge 5491 arranged vertically and a hole wall vertical pressure bearing edge 5492 arranged horizontally.

[0092] The first main body steel pipe 521 of the power rotary tube standard segment 52 is provided with a first joint convex plate 532 and a first joint recess 522 at edges of both ends thereof. The power rotary tube drill bit segment 54 comprises a second main body steel pipe 541, and the wall thickness of the second main body steel pipe 541 is greater than that of the first main body steel pipe 521. The second main body steel pipe 541 is provided with a second joint convex plate 543 and a second joint recess 542 at an edge of an end thereof away from the toothed section 546. The first joint convex plate 532 of the power rotary tube standard segment 52 is spliced with the second joint recess 542 of the power rotary tube drill bit segment 54, and the first joint recess 522 of the power rotary tube standard segment 52 is spliced with the second joint convex plate 543 of the power rotary tube drill bit segment 54. A joint lining steel ring is arranged on an inner wall at a splicing position between the power rotary tube standard segment 52 and the power rotary tube drill bit segment 54. The joint lining steel ring can strengthen the strength of the joint and the stability of the connection.

[0093] In this embodiment, the first joint tab 532, the first joint notch 522, the second joint tab 543 and the second joint notch 542 are dovetail-shaped. Taking two adjacent power spiral standard sections 52 as an example, when the two power spiral standard sections 52 are spliced, a joint plate 532 is arranged between the first joint tab 532 of one of the two power spiral standard sections 52 and the first joint tab 532 of the other power spiral standard section 52 to fill the gap between the two, and the power spiral standard section 52 and the joint plate 532 are fixed by the spring pin 531. Through the joint plate 532 and the spring pin 531, the problem of relative rotation between the adjacent power spiral standard sections 52 can be prevented.

[0094] The joint lining steel ring includes a first joint lining steel ring 524 located inside the end of the power spiral standard section 52, and a section of the first joint lining steel ring 524 adjacent to the end of the lining anti-sticking cylinder 526 is arranged at the inner wall of the first main body steel pipe 521, and a section of the first joint lining steel ring 524 away from the lining anti-sticking cylinder 526 is located inside the first joint tab 532.

[0095] The joint lining steel ring also includes a second joint lining steel ring 544 located inside the end of the power spiral drill bit section 54, and a section of the second joint lining steel ring 544 close to the tooth 546 is arranged at the inner wall of the second main body steel pipe 541, and a section of the second joint lining steel ring 544 away from the tooth 546 is located inside the second joint tab 543. The second joint lining steel ring 544 located in the power spiral drill bit section 54 is arranged adjacent to the first joint lining steel ring 524 in the power spiral standard section 52 adjacent thereto.

[0096] The first joint lining steel ring 524 is provided with a first lifting hole 525, and the second joint lining steel ring 544 is provided with a second lifting hole 545. After the splicing is completed, the lifting holes are covered by the joint tabs, which plays a good leak-proof role.

[0097] The number of the power spiral standard sections 52 is at least two and arranged in sequence along the axial direction. In the two adjacent power spiral standard sections 52, the first joint tab 532 of one of the two power spiral standard sections 52 is spliced with the first joint notch 522 of the other power spiral standard section 52. The inner wall of the splicing part of the two adjacent power spiral standard sections 52 is provided with the first joint lining steel ring 524.

[0098] The drilling machine spinning core transmission system 10 comprises a follow-up platform 2 and a spinning core transmission ring 1 arranged above and below respectively and connected with each other in rotation. The spinning core transmission ring 1 is provided with a power spinning pipe joint segment installation part, and the power spinning pipe joint segment installation part and the upper segment of the power spinning pipe joint segment 51 are connected with each other in a sleeved manner and are detachably connected through installation screws. The outer side wall of the spinning core transmission ring 1 is provided with a wide spiral convex part 13, and a plurality of outer teeth 11 are arranged on the wide spiral convex part 13 along the length direction thereof. The drilling machine spinning core transmission system 10 further comprises a clamping sliding block support 3 which is connected with the follow-up platform 2 in sliding mode, and the clamping sliding block support 3 is provided with at least two clamping sliding blocks 33 which are arranged around the spinning core transmission ring 1, and the clamping sliding blocks 33 are provided with clamping sliding block threads 331 which are matched with the wide spiral convex part 13. A motor and a speed changer 64 are installed on the follow-up platform 2, and the motor and the speed changer 64 are connected with a gear transmission shaft 65, and the gear transmission shaft 65 is engaged with the outer teeth 11 of the wide spiral convex part 13.

[0099] The clamping sliding blocks 33 and the clamping sliding block support 3 are connected in sliding mode along the radial direction of the spinning core transmission ring 1, and the clamping sliding block support 3 is provided with a clamping sliding block driving structure which is matched with the clamping sliding blocks 33.

[0100] In the embodiment, the occlusion slider support 3 comprises an intermediate base plate 31 located outside the occlusion slider 33, and the intermediate base plate 31 is vertically arranged. The intermediate base plate 31 is provided with a slider sleeve ring 312 in sliding fit with the side wall of the occlusion slider 33, and a pre-pressing elastic element 36 is arranged between the back side of the occlusion slider 33 and the intermediate base plate 31. The pre-pressing elastic element 36 is two and symmetrically arranged on the left and right sides of the occlusion slider 33. The pre-pressing elastic element 36 is a pre-pressing high-elastic rubber strip. The back side of the occlusion slider 33 is provided with a U-shaped pull plate 332, and the U-shaped pull plate 332 vertically penetrates through the intermediate base plate 31 and is in sliding fit with the intermediate base plate 31. The occlusion slider driving structure comprises a push-pull device 35 mounted on the intermediate base plate 31, and the push-pull device 35 is provided with upper and lower power output ends. The push-pull device 35 can adopt a hydraulic piston cylinder. The upper and lower power output ends of the push-pull device 35 are respectively connected with an insertion plate 34, and the insertion plate 34 comprises an insertion plate thick section 341, an insertion plate inclined section 342 and an insertion plate thin section 343 arranged in sequence. The insertion plate thin section 343 penetrates through the U-shaped pull plate 332 and is in sliding fit with the U-shaped pull plate 332. The outer side wall of the intermediate base plate 31 is fixedly connected with a U-shaped guide portion 313 in sliding fit with the insertion plate thick section 341. The push-pull device 35 drives the insertion plate 34 to slide relative to the U-shaped guide portion 313. When only the insertion plate thin section 343 penetrates through the U-shaped pull plate 332, the occlusion slider 33 is pressed to the spinning core transmission ring 1 under the action of the pre-pressing elastic element 36 and is engaged with the spinning core transmission ring 1. At this time, the wide spiral convex part 13 of the spinning core transmission ring 1 is matched with the occlusion slider thread 331. When the push-pull device 35 drives the insertion plate 34 to move, the insertion plate inclined section 342 starts to pass through the U-shaped pull plate 332, the occlusion slider 33 overcomes the elastic force of the pre-pressing elastic element 36 and moves radially away from the spinning core transmission ring 1. At this time, the wide spiral convex part 13 of the spinning core transmission ring 1 is separated from the occlusion slider thread 331. One occlusion slider 33 is provided with upper and lower U-shaped pull plates 332 to ensure that the upper and lower ends of the occlusion slider 33 move synchronously.

[0101] The intermediate base plate 31 is at least two, and the occlusion slider support 3 further comprises an annular sleeve beam 32, and each intermediate base plate 31 is connected with the annular sleeve beam 32. The annular sleeve beam 32 comprises at least one pair of slidable U-shaped sleeve beams 321 symmetrically and parallelly arranged. In the embodiment, the intermediate base plate 31 is two and symmetrically arranged on both sides of the spinning core transmission ring 1. The upper and lower sections of the two intermediate base plates 31 are connected through one annular sleeve beam 32. The projection of each annular sleeve beam 32 is square, comprising two slidable U-shaped sleeve beams 321 parallelly arranged. The ends of the two slidable U-shaped sleeve beams 321 are connected through a sleeve beam connecting rod 322. The two intermediate base plates 31 are respectively connected with the slidable U-shaped sleeve beams 321 on both sides.

[0102] The slidable U-shaped sleeve beam 321 is in sliding fit with the horizontally arranged concave sliding groove 731 on the carrier 7, the inner side of the slidable U-shaped sleeve beam 321 is provided with a first semicircular sliding groove 323, and the first semicircular sliding groove 323 is provided with a ball between the concave sliding groove 731 of the drilling carrier and the hoisting system. The carrier 7 and the annular sleeve beam 32 are connected through the electric push-pull device 66. The electric push-pull device 66 is transversely arranged, and a linear motor can be used, and in addition, a telescopic hydraulic cylinder can also be used to achieve the same function.

[0103] The follow-up platform 2 comprises a platform panel 21, and a square circular ring 22 is connected to a circular hole in the middle of the platform panel 21. The square circular ring 22 is made of a bent square tube. The inner side of the spinning core transmission ring 1 is provided with a circular annular protrusion 15, and the annular protrusion 15 is located below the square circular ring 22 and is provided with a first ball 42 therebetween. The drilling spinning core transmission system further comprises U-shaped limiting clamps 4, the upper and lower ends of the U-shaped limiting clamps 4 are located above the square circular ring 22 and below the annular protrusion 15 respectively, and are used to limit the axial distance between the two. The upper end of the U-shaped limiting clamp 4 is connected to the square circular ring 22 through a clamp fixing bolt 41. In the embodiment, the number of the U-shaped limiting clamps 4 is six and is uniformly distributed around the axis of the spinning core transmission ring 1.

[0104] A gear transmission shaft hole 25 is arranged on the platform panel 21 near the square circular ring 22. The vertical gear transmission shaft 65 penetrates through the gear transmission shaft hole 25.

[0105] The platform panel 21 is connected with a sliding sleeve 23 at the edge thereof. The intermediate base plate 31 of the clamping sliding block support 3 is provided with vertical positioning sliding rods 311 on both sides thereof, the positioning sliding rods 311 are sleeved with the sliding sleeve 23 and are in sliding fit therebetween.

[0106] The power spinning pipe joint segment mounting portion of the spinning core transmission ring 1 comprises a plurality of spinning pipe connecting holes 14 arranged on the side wall of the spinning core transmission ring 1. The power spinning pipe joint segment mounting portion of the spinning core transmission ring 1 is fixedly connected with the power spinning pipe joint segment through screws.

[0107] During operation, the power of the motor is greatly reduced through the transmission, the gear transmission shaft and the spinning core transmission ring 1, forming strong rotating power of the spinning pipe. The self-weight load of the drilling rig is transmitted to the spinning pipe through the movable clamping sliding block support 3 and the spinning core transmission ring 1, forming strong pressure of the spinning pipe.

[0108] When the spinning pipe lifts the drilling carrier due to super-hard stratum, the clamping sliding block 33 is separated from the spinning core transmission ring 1 by retracting the clamping sliding block 33, the motor still drives the spinning pipe to rotate through the spinning core transmission ring 1, and the spinning pipe and the follow-up platform 2 rely on the self-weight to quickly penetrate the super-hard stratum in the mode of low pressure and fast rotation.

[0109] A complete hole forming construction process is as follows:

[0110] (1) Drilling rig is in place;

[0111] (2) The center point of the drilling rig is vertically aligned with the center of the borehole;

[0112] (3) Three pairs of load-bearing legs are lowered;

[0113] (4) The drilling rig's rotary core transmission system is slid away from the borehole to create space for lifting;

[0114] (5) The power auger bit section is lifted in;

[0115] (6) The drill head main body is lifted in;

[0116] (7) The drill head main body is locked with the power auger bit section using the drill head connecting and locking mechanism;

[0117] (8) The power auger standard section is lifted in and connected with the power auger bit section;

[0118] (9) The drilling rig's rotary core transmission system is slid back to the center point of the operation;

[0119] (10) The motor is started, the drilling rig's rotary core transmission system is pressed down, automatically connected with the power auger standard section, and normally rotates and drills into the stratum;

[0120] (11) The soil basket 68 is lifted into the auger and automatically connected with the drill head main body, and normally rotates and installs the soil inside the pipe;

[0121] (12) When the soil basket 68 is full of soil, it is lifted out and unloaded through the unloading rack 67, and then lifted back into the auger for operation;

[0122] (13) Steps (11) and (12) are repeated to realize the soil removal function of the drilling operation;

[0123] (14) When the drilling rig's rotary core transmission system presses the auger down by one standard section height, the machine is stopped for pipe connection operation;

[0124] (15) The drilling rig's rotary core transmission system is automatically separated from the auger, the drilling rig's rotary core transmission system is slid away from the borehole to create space for pipe connection, and the drilling rig's rotary core transmission system is lifted to the initial drilling height;

[0125] (16) The auger is lifted in and connected;

[0126] (17) Steps (9), (10), (14), (15), and (16) are repeated to realize the rotary drilling and excavation hole-forming function of the drilling operation;

[0127] (18) When the auger drills to the depth of the hole expansion, it first drills to the bottom of the hole expansion section, and then lifts the drill bit to the top of the hole expansion section;

[0128] (19) stop, lift into the separate hole-expanding machine and drill disc main body automatic clamping, and extend the push rod, so that the separate hole-expanding machine and the power spiral drill bit segment clamping connection;

[0129] (20) simultaneously start the drill press spinning core transmission system, the separate hole-expanding machine motor starts to expand the hole operation;

[0130] (21) spiral drill to the bottom of the hole-expanding section, complete the hole-expanding;

[0131] (22) reverse the separate hole-expanding machine motor, realize the separate hole-expanding machine and the spiral pipe separation, and lift out the separate hole-expanding machine;

[0132] (23) hook pull the separate pull ring of the drill disc connection locking mechanism, realize the separation of the rotary drill disc and the spiral pipe, and lift out the drill disc, complete the whole hole operation;

[0133] (23) subsequent to the hole function, may also need to be pulled out (reverse operation of the hole), hole cleaning and other work.

[0134] The utility model has been described above in combination with the best embodiment, but the utility model is not limited to the above disclosed embodiments, and should cover various modifications, equivalent combinations according to the essence of the utility model.

Claims

1. A vertical all-geological drilling rig, characterized in that, Includes a carrier frame (7), the upper part of the carrier frame (7) is slidably connected to a drilling rig spinning core transmission system (10) via a concave groove (731), the drilling rig spinning core transmission system (10) is detachably connected to a vertically arranged drilling rig anti-leakage and anti-adhesion power spinning pipe system (5), and the lower part of the carrier frame (7) is connected to the spinning pipe guide structure of the drilling rig anti-leakage and anti-adhesion power spinning pipe system (5).

2. The vertical all-geological drilling rig according to claim 1, characterized in that, A crane (101) is connected to the carrier (7).

3. A vertical all-geological drilling rig according to claim 1, characterized in that, The lower end of the drilling rig anti-leakage and anti-adhesion power swivel system (5) is provided with a power swivel drill bit section (54), and the inside of the power swivel drill bit section (54) is provided with a drilling rig hole forming and hole enlargement drill bit system (6); the drilling rig hole forming and hole enlargement drill bit system (6) includes a drill disc body (61), the drill disc body (61) includes a drill disc inner positioning steel column (611), a drill disc base plate (612) and a base plate tip (613) connected sequentially from top to bottom along the axis; a separate hole enlargement machine (62) is detachably connected to the middle of the drill disc inner positioning steel column (611); a drill disc connection locking mechanism (63) is connected on the drill disc base plate (612) to lock the drill disc body (61) and the power swivel drill bit section (54) located on the outside; a turntable outer stiffening ring (617) is provided on the outer edge of the drill disc base plate (612).

4. A vertical all-geological drilling rig according to claim 3, characterized in that, The drill disk connection locking mechanism (63) includes a pin (632) and a guide support (631) mounted on the drill disk base plate (612); a pin drive device is connected between the pin (632) and the drill disk base plate (612); a first interlocking matching hole (618) is provided on the side wall of the turntable outer stiffening ring (617) to slide with the pin (632); the pin drive device includes a plurality of guide wheels (637) rotatably connected to the guide support (631), and a steel cable (636) cooperating with the plurality of guide wheels (637); both ends of the steel cable (636) are connected to steel cable connecting rod heads (634), and the steel cable connecting rod heads (634) are connected to a circular rod (633) by mounting connecting bolts (635), and a cross-section conversion arc plate (6331) is connected to the circular rod (633), and at least two of the pins (632) are provided on the cross-section conversion arc plate (6331).

5. A vertical all-geological drilling rig according to claim 3, characterized in that, The internal positioning steel column (611) of the drill bit includes a positioning groove (615) that runs horizontally through its middle; the upper end of the internal positioning steel column (611) of the drill bit is provided with an entry slot (614), which is connected to the upper part of the positioning groove (615); the separate hole-reaming machine (62) is horizontally arranged in the positioning groove (615); the separate hole-reaming machine (62) includes a housing (621) that is detachably connected to the middle of the internal positioning steel column (611) of the drill bit, and a bidirectional push-pull inner spiral cylinder (623) is rotatably connected inside the housing (621). The bidirectional push-pull inner spiral cylinder (623) is threaded with two symmetrically arranged push rod screw sections (625). One end of the push rod screw section (625) is sequentially connected to a push rod square section (6272), a push rod cross-section conversion plate (6271), and a push rod wedge head (6272). 7) A first cutter (626) is provided on the push rod wedge head (627); the push rod square section (6272) is guided and slidably engaged with the end of the bidirectional push-pull inner spiral cylinder (623); the push rod section conversion plate (6271), the push rod wedge head (627) and the first cutter (626) are all located outside the bidirectional push-pull inner spiral cylinder (623); the split hole-forming machine (62) also includes a first cutter telescopic transmission mechanism; the first cutter telescopic transmission mechanism includes a meshing intermediate transmission helical gear (622) and a rotary push component helical gear transmission disc (6231); the rotating shaft of the intermediate transmission helical gear (622) is rotatably engaged with the machine housing (621) and extends out of the machine housing (621); the rotary push component helical gear transmission disc (6231) is set in the middle of the bidirectional push-pull inner spiral cylinder (623) and the two are fixedly connected on the same axis.

6. A vertical all-geological drilling rig according to claim 5, characterized in that, The drilling rig's anti-leakage and anti-adhesion power swivel system (5) includes a power swivel joint section (51), which is detachably connected to the drilling rig's spinning core transmission system (10). One end of the power swivel joint section (51) is connected to the power swivel drill bit section (54) via a power swivel standard section (52). The power swivel standard section (52) includes a first main steel pipe (521), and an inner anti-adhesion sleeve (526) is fitted on the inner wall of the first main steel pipe (521). The end of the power rotary drill bit section (54) away from the power rotary standard section (52) is provided with a cutting tooth (546); the side wall of the power rotary drill bit section (54) is provided with a hole-drilling and soil-discharging hole (548) and a hole-drilling machine matching hole (549); the first cutter (626) of the split hole-drilling machine (62) can be telescopically matched with the hole-drilling machine matching hole (549); the inner wall of the joint between the power rotary standard section (52) and the power rotary drill bit section (54) is provided with a joint inner lining steel ring.

7. A vertical all-geological drilling rig according to claim 1, characterized in that, The drilling rig spinning core transmission system (10) includes a follower platform (2) and a spinning core transmission ring (1) arranged vertically and rotatably connected to each other; the spinning core transmission ring (1) is provided with a power spinning tube joint section installation part; the outer wall of the spinning core transmission ring (1) is provided with a wide spiral protrusion (13), and the wide spiral protrusion (13) is provided with multiple external teeth (11) along its length direction; it also includes a biting slider bracket (3) that is slidably connected to the follower platform (2) vertically, the biting slider bracket (3) is provided with at least two biting sliders (33) arranged around the spinning core transmission ring (1), and the biting sliders (33) are provided with biting slider threads (331) that cooperate with the wide spiral protrusion (13); the follower platform (2) is equipped with a motor and a gearbox (64), the motor and the gearbox (64) are linked with a gear transmission shaft (65), and the gear transmission shaft (65) meshes with the external teeth (11) of the wide spiral protrusion (13).

8. A vertical all-geological drilling rig according to claim 7, characterized in that, Each of the aforementioned biting sliders (33) and biting slider brackets (3) are radially slidably fitted together along the spinning core drive ring (1). The biting slider brackets (3) are provided with biting slider drive structures that cooperate with the biting sliders (33). The biting slider brackets (3) include an intermediate base plate (31) located outside the biting sliders (33). The intermediate base plate (31) is provided with a slider sleeve (312) that slidably cooperates with the side wall of the biting sliders (33). A pre-compression elastic element (36) is provided between the back side of the biting sliders (33) and the intermediate base plate (31). A U-shaped elastic element is provided on the back side of the biting sliders (33). The U-shaped pull plate (332) passes through the intermediate substrate (31) and the two slide together; the biting slider drive structure includes a pusher (35) mounted on the intermediate substrate (31), the power output end of the pusher (35) is connected to an insert plate (34), the insert plate (34) includes a thick section (341), a sloped section (342), and a thin section (343) arranged in sequence, the thin section (343) passes through the U-shaped pull plate (332); the intermediate substrate (31) is provided with a U-shaped guide (313) that slides together with the thick section (341).

9. A vertical all-geological drilling rig according to claim 8, characterized in that, The intermediate substrate (31) is at least two, and the interlocking slider bracket (3) also includes an annular sleeve beam (32). Each intermediate substrate (31) is connected to the annular sleeve beam (32). The annular sleeve beam (32) includes at least one pair of slidable U-shaped sleeve beams (321) arranged symmetrically and in parallel with each other. The slidable U-shaped sleeve beams (321) are slidably engaged with the concave groove (731) of the carrier (7). The carrier (7) and the annular sleeve beam (32) are connected by an electric push-pull device (66).

10. A vertical all-geological drilling rig according to claim 7, characterized in that, The follower platform (2) includes a platform panel (21), with a square ring (22) connected to the round hole in the middle of the platform panel (21); the inner side of the spinning core transmission ring (1) is provided with an annular protrusion (15), the annular protrusion (15) is located below the square ring (22) and a first ball bearing (42) is provided between the two; it also includes a U-shaped limiting clip (4), the upper and lower ends of the U-shaped limiting clip (4) are located above the square ring (22) and below the annular protrusion (15) respectively; the upper end of the U-shaped limiting clip (4) is connected to the square ring (22); a sliding sleeve (23) is connected on the platform panel (21); a vertically arranged positioning slide rod (311) is provided on the biting slider bracket (3), and the positioning slide rod (311) slides with the sliding sleeve (23).

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