CN210395324U

CN210395324U - Cable drilling tool for pile foundation construction in anchor cable area

Info

Publication number: CN210395324U
Application number: CN201920893904.XU
Authority: CN
Inventors: 刘昊宇; 费交龙; 朱楠; 李波
Original assignee: China Construction Eighth Engineering Division Co Ltd
Current assignee: China Construction Eighth Engineering Division Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-04-24
Anticipated expiration: 2029-06-14

Abstract

The utility model discloses a cable drilling tool for pile foundation construction in an anchor cable area, which comprises a barrel drill bit (1) and a pair of cable toothed bars (2), wherein the end parts of the pair of cable toothed bars (2) are respectively fixed on the barrel drill bit (1) and synchronously rotate with the barrel drill bit (1); the pair of the cable toothed bars (2) is symmetrical about the center line of the barrel drilling drill bit (1), the pair of the cable toothed bars (2) are arranged in parallel to the outer wall direction of the barrel drilling drill bit (1), and the barrel drilling drill bit (1) and the pair of the cable toothed bars (2) form an inverted V-shaped drilling tool structure; the surface of the cable rack rod (2) is provided with spiral teeth (21). The utility model discloses can have the operating mode of existing anchor rope in the underground under, cut off the anchor rope and draw outside the hole, ensure the security and the construction quality of pore-forming when drilling bored concrete pile is under construction.

Description

Cable drilling tool for pile foundation construction in anchor cable area

Technical Field

The utility model relates to a hank cable drilling tool especially relates to a hank cable drilling tool is used in regional pile foundation construction of anchor rope.

Background

The cast-in-situ bored pile can increase the bearing capacity of the foundation and is widely used in the field of building construction. The cast-in-situ bored pile is cast and reinforced in the following ways: and (5) forming holes by using a rotary drilling rig, lowering a reinforcement cage, and finally pouring concrete to form a pile. However, when the underground soil layer has the working condition that the anchor cable is supported by the peripheral structure and the anchor cable structure cannot be avoided at the engineering pile point, the existing anchor cable cannot be cut off by the common rotary drilling rig, so that the hole forming quality cannot be guaranteed. In addition, cutting the cable bolt with brute force is likely to cause damage to the drill bit of the drilling rig, resulting in cost loss.

Disclosure of Invention

An object of the utility model is to provide an anchor rope is hank cable drilling tool for regional pile foundation construction, can exist under the operating mode of existing anchor rope in the underground, cut off the anchor rope and draw outside the hole, the security and the construction quality of pore-forming when ensureing the bored concrete pile construction.

The utility model discloses a realize like this:

a cable drilling tool for pile foundation construction in an anchor cable area comprises a barrel drill bit and a pair of cable toothed bars, wherein the end parts of the pair of cable toothed bars are respectively fixed on the barrel drill bit and synchronously rotate with the barrel drill bit; the pair of the cable toothed bars are symmetrical about the center line of the barrel drilling drill bit, the pair of the cable toothed bars are arranged in a direction parallel to the outer wall of the barrel drilling drill bit, and the barrel drilling drill bit and the pair of the cable toothed bars form an inverted V-shaped drilling tool structure; the surface of the cable rack rod is provided with spiral teeth.

The spiral teeth on the cable tooth rods are positioned below the barrel drill bit, so that when the pair of cable tooth rods are clamped on two sides of the anchor cable, the spiral teeth can rotate to cut the anchor cable laterally.

The distance between the pair of the cable tooth rods is smaller than the inner diameter of the drill rig casing, so that the cable drill can work in the drill rig casing.

The diameter of the stranded cable gear rod is 50mm, and the length of the stranded cable gear rod is 1 m.

The utility model discloses can have under the operating mode of existing anchor rope underground, cut off the anchor rope and draw outside the hole from the side to cooperate long protecting tube to carry out the pore-forming protection to the soil body, avoided phenomenons such as the hole that collapses that appears in the hank cable process, do not influence the construction of engineering pile, carry out normal pore-forming operation again, ensure the security of pore-forming and pile-forming quality when the bored concrete pile is under construction; the utility model has the advantages of simple structure, convenient manufacture, low cost and the like.

Drawings

Fig. 1 is a front view of a hoist drilling tool for pile foundation construction in an anchor cable area according to the present invention;

fig. 2 is a front view of a rope tooth rod of the rope drilling tool for pile foundation construction in the anchor cable area;

FIG. 3 is an enlarged view of a welded joint of the hoist drill for pile foundation construction in the anchor cable area of the present invention;

fig. 4 is the utility model discloses the overhead view of the welded joint of hank cable drilling tool for the regional pile foundation construction of anchor rope.

In the figure, 1 cylinder drill bit, 2 cable tooth bar, 21 helical tooth, 3 welding seam.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Referring to the attached

drawings

1 and 2, the strop drill for pile foundation construction in an anchor cable area comprises a barrel drill bit 1 and a pair of strop toothed bars 2, wherein the end parts of the pair of strop toothed bars 2 are respectively fixed on the barrel wall of the barrel drill bit 1 and synchronously rotate with the barrel drill bit 1; the pair of the cable toothed bars 2 are symmetrical about the center line of the cylindrical drilling bit 1, the pair of the cable toothed bars 2 are arranged in a direction parallel to the outer wall of the cylindrical drilling bit 1, and the cylindrical drilling bit 1 and the pair of the cable toothed bars 2 form an inverted V-shaped drilling tool structure; the surface of the rope toothed bar 2 is provided with helical teeth 21.

The spiral teeth 21 on the cable-stranding toothed bars 2 are located below the cylindrical drill bit 1, so that when the pair of cable-stranding toothed bars 2 are clamped on two sides of an anchor cable, the spiral teeth 21 can rotate to cut the anchor cable laterally, good meshing with the anchor cable during lateral cutting is ensured, and damage to the cylindrical drill bit 1 is reduced.

The distance between the pair of the cable tooth rods 2 is smaller than the inner diameter of a drill rig protective cylinder of the drilling machine equipment in the prior art, so that a cable drill can operate in the drill rig protective cylinder, the quality of formed holes is favorably ensured, and the disturbance to soil is reduced. Preferably, the utility model discloses can cooperate the long section of thick bamboo that protects of drilling rig equipment of prior art to use.

Preferably, the cable tooth rod 2 can be made of a Q345 steel rod with the diameter of 50mm and the length of 1m, the strength of the cable tooth rod is the same as that of the cylindrical drill bit 1, and the cylindrical drill bit 1 can be a cylindrical drill bit of a common rotary drilling rig in the prior art, so that the cost is reduced.

Referring to fig. 3 and 4, the two cable rack bars 2 of the present invention are symmetrically welded to both sides of the barrel drill bit 1, so that the two cable rack bars 2 form a scissors shape, which is low in cost and simple in manufacturing. The cable tooth rod 2 and the barrel drill bit 1 are fixed by adopting equal-strength welding seams in a full welding mode, and the welding reliability is ensured. The overlap length between the cable tooth rod 2 and the barrel drill bit 1 can be adjusted according to actual requirements on site, the tooth pitch of the spiral teeth 21 on the cable tooth rod 2 is adjusted according to the diameter of the anchor cable to be cut off, so that the cutting requirements are met, the spiral teeth 21 can be meshed with the anchor cable in an enhanced mode, the anchor cable is prevented from being cut off, the slip phenomenon occurs, and the stress is influenced stably.

When the anchor cable pile forming device is used, a high-power rotary drilling rig (dual drive) in the prior art is adopted, a full-casing drilling tool and a driver are configured, the anchor cable is drilled to the position in advance, the full casing is left in soil and used for protecting the hole wall and preventing the anchor cable from collapsing and the like in the process of cutting off the anchor cable, the pile forming quality is prevented from being affected, and then the ordinary rotary drilling bit is replaced with a rotary drilling bit for rotary drilling and soil taking to the elevation where the anchor cable is located. Carry and bore and change the utility model discloses a strand drilling tool cuts off the anchor rope, goes into the anchor rope card and cuts the edge of a knife shape in, the cooperation uses prior art's high-power rig to drive a section of thick bamboo and bores drill bit 1 and two strand wires ratchets 2 synchronous revolution, outside utilizing the side shearing force of two strand wires ratchets 2 to cut off the anchor rope and draw it out the hole, reduces the damage to a section of thick bamboo drill bit 1. And after the anchor cable is pulled out, replacing the anchor cable with a common drill bit to take soil in the next step. And repeating the steps until all anchor cables are cut off, recovering the normal pore-forming operation, adopting a crawler crane and a hydraulic vibration hammer to pull out the full casing drilling tool after the concrete pouring of the engineering pile is finished, moving to the next pile position, and entering the next cycle.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a regional pile foundation construction of anchor rope is with hank cable drilling tool, characterized by: the drill bit comprises a barrel drill bit (1) and a pair of cable toothed bars (2), wherein the ends of the pair of cable toothed bars (2) are respectively fixed on the barrel drill bit (1) and synchronously rotate with the barrel drill bit (1); the pair of the cable toothed bars (2) is symmetrical about the center line of the barrel drilling drill bit (1), the pair of the cable toothed bars (2) are arranged in parallel to the outer wall direction of the barrel drilling drill bit (1), and the barrel drilling drill bit (1) and the pair of the cable toothed bars (2) form an inverted V-shaped drilling tool structure; the surface of the cable rack rod (2) is provided with spiral teeth (21).

2. The anchor rope area pile foundation construction hoist rope drilling tool of claim 1, characterized by: the spiral teeth (21) on the cable-stranding toothed bars (2) are positioned below the barrel drill bit (1), so that when the pair of cable-stranding toothed bars (2) are clamped at two sides of the anchor cable, the spiral teeth (21) can rotate to cut the anchor cable laterally.

3. The anchor rope area pile foundation construction hoist line drilling tool as claimed in claim 1 or 2, wherein: the distance between the pair of the cable tooth rods (2) is smaller than the inner diameter of the drill casing, so that the cable drill can work in the drill casing.

4. The anchor rope area pile foundation construction hoist line drilling tool as claimed in claim 1 or 2, wherein: the diameter of the cable tooth bar (2) is 50mm, and the length is 1 m.