CN219061519U

CN219061519U - Anchor rod pore-forming enlarged bit device

Info

Publication number: CN219061519U
Application number: CN202223057553.XU
Authority: CN
Inventors: 陈亚飞
Original assignee: Anhui Zhonghui Urban Planning Survey & Design Institute Co ltd
Current assignee: Anhui Zhonghui Urban Planning Survey & Design Institute Co ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-05-23
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses a drill bit device for a hole forming and head enlarging of an anchor rod, which relates to the field of slope and foundation pit supporting construction and comprises a connecting rod, a drill bit and a drilling mechanism. According to the utility model, the drilling mechanism is arranged, the bottom drill bit is driven to reach the designed depth through the hole drilled by the previous anchor rod by pushing the connecting rod, the bottom drill bit is extruded by continuously pressing the connecting rod, the inclined planes of the outer walls of the two side drill bits are extruded, the second telescopic springs are stretched, the outer walls of the connecting rod are moved into the soil layer by moving the sliding grooves, at the moment, the connecting rod rotates along with the two side drill bits, the two side drill bits rotate together with the connecting rod as the center of a circle, surrounding soil can be cut through the drilling teeth of the outer walls of the side drill bits, namely, the expansion operation of the hole heads is completed, and the service life of the drill bit can be prolonged through independent arrangement of the two side drill bits.

Description

Anchor rod pore-forming enlarged bit device

Technical Field

The utility model relates to the field of slope and foundation pit supporting construction, in particular to an anchor rod pore-forming enlarged bit device.

Background

The construction of a soil layer anchor rod is carried out, after a reinforced concrete pile, a filling pile or an underground diaphragm wall of a foundation pit support structure is finished, the anchor rod is matched with the excavation progress of the foundation pit, when the depth of the anchor rod is designed, the anchor rod is constructed inside the soil layer, the anchor rod construction procedure is that holes are formed in the soil layer, the anchor rod is inserted, grouting and tensioning are carried out, in the existing anchor rod construction engineering, the diameters of an anchoring section and a free section of a traditional anchor rod are equal, the pulling resistance provided by the anchoring section is generally smaller than that of an expanded anchor rod, the expanded anchor rod is limited by geological conditions or surrounding environments, and the expanded anchor rod has more general universality.

In the engineering of adopting the body-expanding anchor rod, anchor rod reaming construction is required to be carried out in a matched mode, an existing anchor rod pore-forming enlarged bit device is provided with a reaming bit in an internal folding mode, and then the hole is enlarged by extending and cutting the internal space of the hole through the reaming bit, so that the folding reaming bit is easy to deform after cutting the soil layer for a long time, and the device is damaged.

Disclosure of Invention

The utility model aims at: in order to solve the problems of low durability and easy damage of the existing drill bit, the drill bit device for enlarging the hole of the anchor rod is provided.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the drill bit device comprises a connecting rod and a bottom drill bit which is connected inside the connecting rod in a sliding way and extends to the bottom, wherein drilling mechanisms are arranged outside and inside the connecting rod;

the drilling mechanism comprises two side drills which are symmetrically arranged inside the connecting rod and extend to the outer surface of the connecting rod, drilling teeth are fixedly connected to one side of the outer wall, away from each other, of the side drills, a second telescopic spring is arranged between the two side drills, a connecting chute is arranged inside the connecting rod, a first telescopic spring is fixedly connected to the top end of the connecting chute, and a moving chute extending to the outer wall is symmetrically arranged inside the connecting rod.

As still further aspects of the utility model: the internal structure of the movable chute is matched with the integral structure of the side drill, and the side drill is in sliding connection with the connecting rod through the movable chute.

As still further aspects of the utility model: and one side of the outer wall of the side drill close to each other is provided with an inclined surface structure.

As still further aspects of the utility model: the drill teeth are arranged in a plurality, and the drill teeth are fixedly connected to one side of the outer wall of the side drill bit at equal intervals.

As still further aspects of the utility model: the inner wall diameter of the connecting chute is matched with the outer wall diameter of the bottom drill bit, and the bottom drill bit is in sliding connection with the connecting rod through the connecting chute.

As still further aspects of the utility model: and two ends of the second telescopic spring are fixedly connected with one side of the outer wall, which is close to the side drills, respectively.

As still further aspects of the utility model: the other end of the first telescopic spring is fixedly connected with the bottom drill bit and is staggered with the first telescopic spring.

Compared with the prior art, the utility model has the beneficial effects that:

through setting up drilling mechanism, drive the hole that the bottom drill bit was bored through preceding stock through promoting the connecting rod and reach the design degree of depth, and extrude the bottom drill bit through lasting pushing down the connecting rod, make the bottom drill bit extrude the inclined plane of two side drill bit outer walls, the inclined plane of two side drill bits receives the extrusion, tensile second expansion spring, and move into the soil layer inside through the outer wall that removes the spout to the connecting rod, rotate the connecting rod this moment will rotate along with two side drill bits together, two side drill bits rotate as the centre of a circle, it can be to the soil body around to bore the cutting through the brill tooth of side drill bit outer wall, accomplish the expansion operation to the hole head promptly, the life of drill bit can be improved through the independent setting of two both sides drill bit.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of a connecting rod of the present utility model;

FIG. 3 is a schematic view of the internal cavity of the connecting rod according to the present utility model.

In the figure: 1. a connecting rod; 2. a bottom drill bit; 3. a drilling mechanism; 301. drilling teeth; 302. a side drill; 303. the connecting chute; 304. a first extension spring; 305. a second extension spring; 306. and (5) moving the chute.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 3, in an embodiment of the present utility model, an anchor rod hole-forming enlarged bit device includes a connecting rod 1 and a bottom bit 2 slidably connected inside the connecting rod 1 and extending to the bottom, wherein drilling mechanisms 3 are disposed outside and inside the connecting rod 1;

the drilling mechanism 3 comprises two side drills 302 which are symmetrically arranged inside the connecting rod 1 and extend to the outer surface of the connecting rod 1, drill teeth 301 are fixedly connected to one side of the outer wall of the connecting rod 1, which is far away from each other, second telescopic springs 305 are arranged between the two side drills 302, a connecting chute 303 is arranged inside the connecting rod 1, first telescopic springs 304 are fixedly connected to the top end of the connecting chute 303, movable chute 306 which extends to the outer wall are symmetrically arranged inside the connecting rod 1, the side drills 302 are arranged on the side of the outer wall, which is close to each other, of the moving chute 306, the inner structure of the moving chute 306 is matched with the integral structure of the side drills 302, the side drills 302 are in sliding connection with the connecting rod 1 through the movable chute 306, the inner wall diameter of the connecting chute 303 is matched with the outer wall diameter of the bottom drill 2, the bottom drill 2 is in sliding connection with the connecting rod 1 through the connecting chute 303, and two ends of the second telescopic springs 305 are respectively fixedly connected with one side, which is close to each other, of the outer wall of the two side drills 302.

In this embodiment: when the anchor rod is constructed, firstly, the anchor rod is drilled to the designed depth, then the anchor rod is pulled out and replaced by the anchor rod, the bottom drill bit 2 is driven by the pushing connecting rod 1 to reach the designed depth through the hole drilled by the anchor rod before, the connecting rod 1 is continuously pressed down to extrude the bottom drill bit 2 after the bottom drill bit 2 reaches the designed depth, the bottom drill bit 2 is extruded to move upwards into the inside of the connecting chute 303, the second expansion springs 305 are extruded and the inclined surfaces of the outer walls of the two side drill bits 302 are extruded, the inclined surfaces of the two side drill bits 302 are extruded, the second expansion springs 305 are stretched, the moving chute 306 moves to the outer walls of the connecting rod 1 to enter the soil layer, at the moment, the rotating connecting rod 1 rotates along with the two side drill bits 302, the two side drill bits 302 rotate by taking the connecting rod 1 as the circle center, the drill teeth 301 on the outer walls of the side drill bits 302 can cut the surrounding soil body, namely, after the construction operation is finished, the expansion operation of the hole head is finished, the bottom drill bit 2 is released by lifting the connecting rod 1, the inclined surfaces of the two side drill bits 302 are extruded downwards under the reset action of the first expansion springs 304, the two side drill bits 302 are extruded, the two side drill bit 302 are independently, the two side drill bit 2 can be prevented from moving downwards under the reset action of the reset springs 302, the two side drill bit 302 can be independently, and the life of the two side drill bits can be prolonged, and the life of the two side drill bit can be prolonged, and the life can be prolonged.

Referring to fig. 1-3, a plurality of drilling teeth 301 are provided, and the plurality of drilling teeth 301 are fixedly connected to one side of the outer wall of the side drill 302 at equal distances.

In this embodiment: through the structure, when the rotary connecting rod 1 drives the two side drills 302 to rotate, the soil layer is efficiently cut.

Referring to fig. 1-3, the other end of the first extension spring 304 is fixedly connected to the bottom drill 2, and is offset from the first extension spring 304.

In this embodiment: by this structural arrangement, the mounting operation of the first extension spring 304 and the second extension spring 305 can be facilitated.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The drill bit device for the anchor rod pore-forming enlarged bit comprises a connecting rod (1) and a bottom drill bit (2), and is characterized in that drilling mechanisms (3) are arranged outside and inside the connecting rod (1);

the drilling mechanism (3) comprises two side drills (302) which are symmetrically arranged inside the connecting rod (1) and extend to the outer surface of the connecting rod (1), drilling teeth (301) are fixedly connected to one side of the outer wall of each side drill (302), which is far away from each other, and a second telescopic spring (305) is arranged between the two side drills (302).

2. A rock bolt hole enlarging bit arrangement according to claim 1, wherein the drilling mechanism (3) further comprises a moving chute (306) for moving two of the side bits (302).

3. An enlarged footing drill bit assembly for forming holes in an anchor rod according to claim 1, characterized in that said side drills (302) are each provided with a bevel structure on the side of the outer wall adjacent to each other.

4. The anchor rod hole-forming enlarged-head drill bit device according to claim 1, wherein a plurality of drill teeth (301) are provided, and the plurality of drill teeth (301) are fixedly connected to one side of the outer wall of the side drill bit (302) at equal distances.

5. A rock bolt hole enlarging bit arrangement according to claim 1, wherein the drilling mechanism (3) further comprises a connecting chute (303) for the movement of the bottom bit (2).

6. An enlarged footing drill bit apparatus for forming holes in a rock bolt according to claim 1, characterized in that said drilling means (3) further comprises a first extension spring (304) for driving said bottom drill bit (2) for a resetting operation.

7. The anchor rod hole-forming enlarged-head drill bit device according to claim 6, wherein the other end of the first expansion spring (304) is fixedly connected with the bottom drill bit (2), and is offset from the first expansion spring (304).