Bidirectional spiral squeezing and expanding drill bit

Abstract

The utility model belongs to the technical field of squeezing and expanding drill bits, and particularly relates to a bidirectional spiral squeezing and expanding drill bit which comprises a connecting end, an abutting ring is fixed to the bottom end of the connecting end, a connecting rod is connected to the lower portion of the abutting ring, and a drill bit body is fixed to the bottom end of the connecting rod. An abutting mechanism is arranged outside the connecting rod; when the drill bit main body drills, the sleeve enters a hole along with the drill bit main body under the abutting of the abutting ring to support the hole so as to avoid loosening and collapsing, the clamping block is fixed through the abutting plate, and the clamping block is matched with the clamping groove to keep the sleeve to slide stably so as to avoid deviation. And meanwhile, the abutting ring drives the connecting rod to rotate smoothly through the sliding groove and the universal wheel, the clamping block is matched to prevent the sleeve from rotating along with the abutting ring, the stability of the drilling process is kept, and meanwhile it is guaranteed that the hole is prevented from inclining.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of extrusion and expansion drill bits, specifically a kind of bidirectional spiral extrusion and expansion drill bits, belong to extrusion and expansion drill bit technical field. BACKGROUND

[0002] In the existing building pile foundation construction, the bearing capacity of pile is mainly designed according to side friction, and the pile with large bearing capacity can only be realized by increasing pile length or increasing pile diameter, so the construction method of bidirectional spiral extrusion and expansion bored pile is widely applied, in the process of pile forming, drill bit completely extrudes the soil in pile hole into the soil around the pile hole, forming cylindrical completely extruded soil bored pile, the physical extrusion and compaction effect of soil around pile is realized by this means, so that the stress level of annular soil rises and the main shear strength improves, finally the macro performance is that pile side friction, ultimate bearing capacity greatly improves and pile deformation performance greatly improves.

[0003] In the prior art, such as the bidirectional spiral closed extrusion and expansion drill disclosed in the announcement No. CN218206585U, the utility model is provided with an extension rod and a shock-absorbing spring, when the bottom of the extrusion and expansion drill contacts the rock layer inside the soil, the shock-absorbing spring is elastically deformed under the impact force, driving the extension rod to contract, thereby absorbing the impact force generated after the whole extrusion and expansion drill contacts the rock layer, reducing the risk of fracture of the extrusion and expansion drill, and improving the use experience of the extrusion and expansion drill.

[0004] However, in the implementation of the related technology, it is found that the above-mentioned bidirectional spiral closed extrusion and expansion drill has the following problems: in the prior art, by cooperating with the shock-absorbing spring and other components, the drill bit has shock-absorbing property during the extrusion and expansion process, but in actual use, when the drill bit is inserted into the ground and drilled too deep, it may cause vibration to the inner wall of the hole, and without support, the inner wall of the hole may be inclined due to vibration, therefore, a bidirectional spiral extrusion and expansion drill bit is provided to overcome the above-mentioned defects. UTILITY MODEL CONTENTS

[0005] The utility model provides a bidirectional spiral extrusion and expansion drill bit to solve the technical problem that when the drill bit is inserted into the ground and drilled too deep, it may cause vibration to the inner wall of the hole, and without support, the inner wall of the hole may be inclined due to vibration.

[0006] The utility model realizes the above-mentioned purpose through the following technical scheme: a bidirectional spiral extrusion and expansion drill bit, comprising a connecting end, a contact ring is fixed at the bottom end of the connecting end, a connecting rod is connected below the contact ring, a drill bit main body is fixed at the bottom end of the connecting rod, and a contact mechanism is arranged outside the connecting rod.

[0007] The conflict mechanism comprises a sleeve, the sleeve is sleeved on the outer wall of the connecting rod, a sliding groove is formed at the top end of the sleeve, a universal wheel is embedded at the bottom end of the conflict ring corresponding to the position of the sliding groove, a clamping groove is formed on the outer wall of the sleeve, and a conflict plate is arranged outside the sleeve, and a clamping block is fixed inside the conflict plate corresponding to the position of the clamping groove.

[0008] As a further scheme of the utility model: the conflict ring and the sleeve are closely attached through the rotating structure formed between the universal wheel and the sliding groove.

[0009] As a further scheme of the utility model: the conflict plate and the sleeve form a sliding structure through the sliding structure formed between the clamping block and the clamping groove.

[0010] As a further scheme of the utility model: the corresponding positions of the outer walls of the sleeve and the conflict plate are fixed with a connecting seat, and a supporting mechanism is arranged inside the connecting seat.

[0011] As a further scheme of the utility model: the supporting mechanism comprises a penetrating rod, the penetrating rod is rotationally connected inside the connecting seat, and a sleeving rod is penetrated into one end of the penetrating rod penetrating into the connecting seat.

[0012] As a further scheme of the utility model: the supporting mechanism further comprises a limiting ring, the limiting ring is fixed to the outer wall of one end of the penetrating rod inside the sleeving rod, and a damping spring is installed on one end of the penetrating rod penetrating into the sleeving rod.

[0013] As a further scheme of the utility model: the penetrating rod and the sleeving rod form a sliding structure, and the sleeving rod and the limiting ring form a sliding structure.

[0014] The utility model discloses the beneficial effect is: when the drill head main body drills, the sleeve is under the resistance of the conflict ring, and the sleeve is supported in the hole along with the drill head main body and avoids the situation that the loose collapse appears, the clamping block fixed through the conflict plate cooperates the clamping groove and keeps the sleeve stable sliding and avoids the deviation, and the sleeve and the connecting rod are driven to rotate smoothly through the sliding groove and the universal wheel, and the sleeve is kept from rotating through the clamping block, the stability in the drilling process is kept, and the hole is kept from being inclined.

[0015] The utility model discloses the beneficial effect is: the telescopic rod is formed in the form of the penetrating rod and the sleeving rod, and is rotationally connected between two connecting seats, can be stably supported when the sleeve slides along the conflict plate, and can be telescopic sliding position adjustment angle and length, cooperates the limiting ring and avoids the penetrating rod from separating from the sleeving rod, and has certain damping nature through the damping spring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is whole structure schematic diagram of the utility model;

[0017] Fig. 2 It is the schematic view of the connecting rod structure of the utility model;

[0018] Fig. 3 It is the schematic view of the chute structure of the utility model;

[0019] Fig. 4 It is the schematic view of the damping spring structure of the utility model.

[0020] In the drawing: 1, connecting end; 2, abutting ring; 3, connecting rod; 4, drill head main body; 5, abutting mechanism; 501, sleeve; 502, chute; 503, universal wheel; 504, clamping groove; 505, abutting plate; 506, clamping block; 6, connecting seat; 7, supporting mechanism; 701, penetrating rod; 702, sleeving rod; 703, limiting ring; 704, damping spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. Embodiment one

[0022] As Figs. 1 to 4As shown, a bidirectional spiral extrusion drill bit, including a connecting end 1, the bottom end of the connecting end 1 is fixed with a resisting ring 2, the lower part of the resisting ring 2 is connected with a connecting rod 3, the bottom end of the connecting rod 3 is fixed with a drill bit main body 4, the outside of the connecting rod 3 is provided with a resisting mechanism 5; the resisting mechanism 5 includes a sleeve 501, the sleeve 501 is sleeved on the outer wall of the connecting rod 3, the top end of the sleeve 501 is provided with a sliding groove 502, the bottom end of the resisting ring 2 is embedded with a universal wheel 503 at the position corresponding to the sliding groove 502, the outer wall of the sleeve 501 is provided with a clamping groove 504, the outside of the sleeve 501 is provided with a resisting plate 505, the inside of the resisting plate 505 is fixed with a clamping block 506 at the position corresponding to the clamping groove 504, the resisting ring 2 and the sleeve 501 are tightly combined, the resisting plate 505 and the sleeve 501 constitute a sliding structure; when the drill bit main body 4 drills, the sleeve 501 is resisted by the resisting ring 2 and enters the hole to support to avoid loose collapse, the clamping block 506 fixed by the resisting plate 505 cooperates with the clamping groove 504 to keep the sleeve 501 stable sliding to avoid deviation, at the same time, the resisting ring 2 and the connecting rod 3 are smoothly rotated through the sliding groove 502 and the universal wheel 503, and the sleeve 501 is prevented from rotating by cooperating with the clamping block 506, which keeps the drilling process stable and ensures that the hole is not inclined. Example two

[0023] In addition to including all the technical features in example one, the outside of the sleeve 501 and the resisting plate 505 is fixed with a connecting seat 6 at the corresponding position, the connecting seat 6 is provided with a supporting mechanism 7 inside, the supporting mechanism 7 includes a penetrating rod 701, the penetrating rod 701 is rotationally connected inside the connecting seat 6, one end of the penetrating rod 701 penetrating the connecting seat 6 is penetrated with a sleeving rod 702, the supporting mechanism 7 further includes a limiting ring 703, the limiting ring 703 is fixed on the outer wall of the penetrating rod 701 at the end inside the sleeving rod 702, one end of the penetrating rod 701 penetrating the sleeving rod 702 is installed with a damping spring 704, the penetrating rod 701 and the sleeving rod 702 constitute a sliding structure, the sleeving rod 702 and the limiting ring 703 constitute a sliding structure; the penetrating rod 701 and the sleeving rod 702 constitute an extension rod, which is rotationally connected between two connecting seats 6, can stably support and can extend and slide to adjust the angle and length when the sleeve 501 slides along the resisting plate 505, cooperates with the limiting ring 703 to prevent the penetrating rod 701 from separating from the sleeving rod 702, and has certain damping property through the damping spring 704.

[0024] Working principle: the connecting end 1 is used for connecting with the power equipment, so as to drive the connecting rod 3 through the abutting ring 2 to make the drill bit body 4 carry out drilling operation, the connecting rod 3 is externally sleeved with the sleeve 501, and the abutting ring 2 slides along the sliding groove 502 through the universal wheel 503, so as to be capable of pushing the sleeve 501 to follow the drill bit body 4 into the hole and supporting the inner wall of the hole, and the universal wheel 503 and the sliding groove 502 improve the rotation fluency, the clamping groove 504 and the clamping block 506 avoid the sleeve 501 from following the rotation, the abutting plate 505 is attached to the ground and cooperates with the clamping block 506 to limit the sleeve 501, improves the stability of the drilling process, between the two connecting seats 6, a plurality of penetrating rods 701 and sleeving rods 702 are arranged to form telescopic rods, the penetrating rod 701 is prevented from separating from the sleeving rod 702 through the limiting ring 703, is elastically pushed through the damping spring 704, and is rotatably connected with the penetrating rod 701 through the connecting seat 6, so as to avoid limiting when the sleeve 501 slides along the abutting plate 505, and further improve the stability of drilling, and at the same time, the damping spring 704 is elastically contracted to reserve the telescopic space and has certain shock absorption.

[0025] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0026] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A bidirectional spiral extrusion and expansion drill bit, comprising a connecting end (1), characterized in that: A resistance ring (2) is fixed to the bottom end of the connecting end (1), and a connecting rod (3) is connected below the resistance ring (2). A drill bit body (4) is fixed to the bottom end of the connecting rod (3), and a resistance mechanism (5) is provided outside the connecting rod (3); The interference mechanism (5) includes a sleeve (501), the sleeve (501) is sleeved on the outer wall of the connecting rod (3), and a sliding groove (502) is provided at the top of the sleeve (501), a universal wheel (503) is embedded at the bottom end of the interference ring (2) at a position corresponding to the sliding groove (502), a clamping groove (504) is provided on the outer wall of the sleeve (501), and a interference plate (505) is provided on the outside of the sleeve (501), and a clamping block (506) is fixed at a position corresponding to the clamping groove (504) inside the interference plate (505).

2. The bidirectional spiral extrusion and expansion drill bit according to claim 1, characterized in that: The abutment ring (2) forms a rotating structure through the universal wheel (503) and the slide groove (502), and the abutment ring (2) and the sleeve (501) are tightly fitted.

3. The bidirectional spiral extrusion and expansion drill bit according to claim 1, characterized in that: The contact plate (505) forms a sliding structure between the clamping block (506) and the clamping slot (504), and a sliding structure is formed between the contact plate (505) and the sleeve (501).

4. The bidirectional spiral extrusion and expansion drill bit according to claim 1, characterized in that: A connecting seat (6) is fixed at corresponding positions on the outer walls of the sleeve (501) and the contact plate (505), and a supporting mechanism (7) is provided inside the connecting seat (6).

5. The bidirectional spiral extrusion and expansion drill bit according to claim 4, characterized in that: The support mechanism (7) includes a penetration rod (701), the penetration rod (701) is rotatably connected to the interior of the connecting seat (6), and one end of the penetration rod (701) that penetrates the connecting seat (6) is penetrated by a sleeve rod (702).

6. The bidirectional spiral extrusion and expansion drill bit according to claim 5, characterized in that: The support mechanism (7) further comprises a limiting ring (703), wherein the limiting ring (703) is fixed to the outer wall of one end of the penetration rod (701) located inside the sleeve rod (702), and a damping spring (704) is installed at one end of the penetration rod (701) that penetrates the sleeve rod (702).

7. The bidirectional spiral extrusion and expansion drill bit according to claim 6, characterized in that: A sliding structure is formed between the penetration rod (701) and the sleeve rod (702), and a sliding structure is formed between the sleeve rod (702) and the limiting ring (703).

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