CN210087247U - Drill bit for highway coring test - Google Patents

Abstract

A drill bit for a road coring test relates to a coring drill bit. Two vertical openings have been seted up to the drill bit body, there is the promotion plectane inside the drill bit body, it is protruding to promote the plectane, the fixture block arch respectively with vertical opening sliding connection, the inner wall bonding of drill bit body is fixed with a plurality of wear-resisting antiskid circles, go up the sliding ring and establish at the drill bit body outside that the sliding ring all slides the cover down, go up the sliding ring through fastening bolt can with drill bit body fastening position, go up the vertical many elastic telescopic support poles that are fixed with of sliding ring lower surface, the vertical many foot poles that are fixed with of lower sliding ring lower surface. The drill bit body is internally provided with a pushing circular plate and a plurality of wear-resistant anti-slip rings, so that the concrete core block can be conveniently taken out, and the shockproof and tremble component set is also arranged, thereby effectively reducing the adverse effect caused by tremble.

Description

Drill bit for highway coring test

Technical Field

The utility model relates to a coring bit, especially a highway coring test uses drill bit.

Background

In the highway engineering, in order to master the physical properties of a concrete pavement, a sampling detection test is required, and at present, a concrete core drilling machine is basically used for drilling the pavement to take out concrete core blocks. However, after the core bit used by the existing concrete core drilling machine is used for drilling, the concrete core block is left in the hole, the core bit is difficult to take out, even the concrete core block is damaged by hard clamping and lifting of an external tool, and the core bit generates large vibration just contacting with the concrete pavement before drilling into the concrete pavement, so that the core bit is not beneficial to smooth core operation. Therefore, there is a need for a coring bit that facilitates the removal of concrete pellets while also being effective in reducing chatter.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a highway coring test uses drill bit, it promotes plectane and a plurality of wear-resisting antiskid circle in this internal setting of drill bit, and taking out of the concrete pellet of being convenient for still is equipped with the shockproof component of quivering and organizes, can effectively reduce the adverse effect because of the tremor causes.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model provides a highway coring test uses drill bit, includes the drill bit body, drill bit body appearance is the pipe form, and its upper end system has the connector, and its lower extreme evenly is fixed with a plurality of PDC cutting teeth along the circumferencial direction, and two vertical openings have been seted up to the pipe wall top symmetry of drill bit body, and drill bit body internal clearance is provided with the promotion plectane, it is protruding to promote plectane circumferential position system has two fixture blocks, two fixture block protruding symmetries set up and respectively with two vertical opening sliding connection, the inner wall below of drill bit body is provided with a plurality of rubber ring constant head tanks along vertical equidistant, and through a plurality of rubber ring constant head tank bonds and is fixed with a plurality of wear-resisting anti-slip rings, every the inner ring surface of wear-resisting anti-slip ring all bulges the inner wall setting of drill bit body, highway coring test uses drill bit still is equipped with shockproof component, The upper sliding ring and the lower sliding ring are sleeved outside the pipe wall of the drill body in a sliding manner, the upper sliding ring is provided with a threaded through hole along the radial direction and is matched and screwed with a fastening bolt, the upper sliding ring and the drill bit body can be tightly fixed in position through the fastening bolts, a plurality of elastic telescopic supporting rods are vertically fixed on the lower surface of the upper sliding ring at equal angles, the elastic telescopic supporting rod comprises an outer pipe, an inner rod and a high-strength pressure spring, the upper end of the outer pipe is fixedly connected with the upper sliding ring, the upper end of the inner rod is inserted into the lower end of the outer pipe in a sliding manner, the upper end surface of the inner rod is fixedly connected with the corresponding position of the upper slip ring through the high-strength pressure spring, the lower end surface of the inner rod is provided with a spherical groove and is provided with a ball, the ball is abutted against the upper surface of the lower sliding ring, a plurality of supporting foot rods are vertically fixed on the lower surface of the lower sliding ring at equal angles, and the lower ends of the supporting foot rods are made to be conical.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses set up a plurality of wear-resisting antiskid circles in this internal setting of drill bit, get the back concrete core piece and can directly lift up with the drill bit body together under the frictional action of wear-resisting antiskid circle, add simultaneously and promote the plectane and be convenient for ejecting the concrete core piece, convenient operation, the drill bit body still is equipped with shockproof tremble component group in addition, can effectively reduce the adverse effect that the drill bit body caused because of tremble before drilling into the concrete, simple and practical has good using value.

Drawings

FIG. 1 is an isometric view of the overall construction of a road coring test drill of the present invention;

FIG. 2 is an isometric view of the utility model showing a split structure of the road coring test drill bit;

fig. 3 is an axonometric view of the split structure of the upper slide ring and a plurality of elastic telescopic supporting rods of the utility model;

fig. 4 is an enlarged view of a portion a of fig. 3.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

The first embodiment is as follows: as shown in figures 1-4, the utility model discloses a drill bit for road coring test, which comprises a drill bit body 1, wherein the drill bit body 1 is in a shape of a circular tube, the upper end of the drill bit body 1 is integrally provided with a connector 1-1, the lower end of the drill bit body is uniformly fixed with a plurality of PDC cutting teeth 1-2 along the circumferential direction, two vertical notches 1-3 are symmetrically arranged above the tube wall of the drill bit body 1, a pushing circular plate 2 is arranged in the inner gap of the drill bit body 1, two fixture block bulges 2-1 are integrally arranged at the circumferential position of the pushing circular plate 2, the two fixture block bulges 2-1 are symmetrically arranged and are respectively connected with the two vertical notches 1-3 in a sliding manner, a plurality of rubber ring positioning grooves are arranged along the vertical direction at equal intervals below the inner wall of the drill bit body 1, a plurality of wear-resistant anti-skid rings 3 are fixedly bonded through the rubber ring positioning grooves, and the inner ring surface of, the drill bit for the highway coring test is further provided with a vibration prevention component set, the vibration prevention component set comprises an upper sliding ring 4, a lower sliding ring 8, a plurality of elastic telescopic supporting rods and a plurality of supporting rod 9, the upper sliding ring 4 and the lower sliding ring 8 are slidably sleeved on the outer portion of the pipe wall of the drill bit body 1, the upper sliding ring 4 is provided with a threaded through hole along the radial direction and is matched and screwed with a fastening bolt 4-1, the fastening bolt 4-1 can be tightly fixed with the drill bit body 1 in position, the lower surface of the upper sliding ring 4 is equiangularly and vertically fixed with the plurality of elastic telescopic supporting rods, the elastic telescopic supporting rods comprise an outer pipe 5, an inner rod 6 and a high-strength pressure spring 7, the upper end of the outer pipe 5 is fixedly connected with the upper sliding ring 4, the upper end of the inner rod 6 is slidably inserted into the lower end of the outer pipe 5, the upper end face of the inner rod 6 is fixedly connected with the, the ball 6-1 is abutted against the upper surface of the lower sliding ring 8, a plurality of supporting rod rods 9 are vertically fixed on the lower surface of the lower sliding ring 8 at equal angles, and the lower ends of the supporting rod rods 9 are made to be conical.

The second embodiment is as follows: as shown in fig. 2, in this embodiment, a first embodiment is further described, the pushing circular plate 2 is provided with a central hole, and the middle positions of the outer end surfaces of the two latch protrusions 2-1 are respectively provided with a concave hole.

The third concrete implementation mode: as shown in fig. 2, the first embodiment is further described in the present embodiment, and the wear-resistant anti-slip ring 3 protrudes 1-3 mm from the inner wall of the drill body 1.

Referring to fig. 1 and 2, a drill bit body 1 is fixedly connected with a concrete core drilling machine through a connector 1-1, after the drill bit body 1 drills and cores, a concrete core block is lifted along with the drill bit body 1 under the friction action of a plurality of wear-resistant anti-skid rings 3, the concrete core block can be ejected out by moving the push circular plate 2 downwards, the central hole of the circular plate 2 is pushed to enable the upper air pressure and the lower air pressure to be consistent, the jacks on the outer end surfaces of two fixture block bulges 2-1 can be inserted through hard rod-shaped objects such as thin steel bars and the like to facilitate the movement of the push circular plate 2, the anti-vibration component group can reduce the adverse effect caused by vibration before the drill bit body 1 drills into concrete, when in use, PDC cutting teeth 1-2 of the drill bit body 1 are firstly close to or contacted with the concrete pavement, a lower sliding ring 8 slides downwards to enable a plurality of supporting foot rods 9 to be supported on the concrete pavement, and then an, the fastening bolt 4-1 is screwed for positioning, then the drill bit body 1 is rotated and descended by a small amplitude to make the drill bit body initially drill into a concrete pavement, the upper sliding ring 4 drives a plurality of elastic telescopic supporting rods to rotate along with the drill bit body 1, meanwhile, the sliding ring 8 is pressed down all the time, the lower ends of the plurality of supporting foot rods 9 are made into a conical shape and supported on the concrete pavement without rotating, the vibration of the drill bit body 1 is limited, when the drill bit body 1 is descended by a small amplitude, referring to fig. 3 and 4, the high-strength compression spring 7 of the elastic telescopic supporting rod is compressed, the inner rod 6 is pressed into the outer tube 5, and the arrangement of the ball 6-1 can ensure that the inner rod 6 stably supports the lower sliding ring 8 without influencing the rotation, then the fastening bolt 4-1 is unscrewed to simultaneously move the upper sliding ring 4 and the lower sliding ring 8 upwards to be separated from the drill bit body 1, and the drill bit body 1 can continue to rotate and descend until the coring task is completed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other forms of embodiment without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (3)

1. The utility model provides a highway coring test uses drill bit, includes drill bit body (1), drill bit body (1) appearance is the pipe form, and its upper end system has connector (1-1), and its lower extreme evenly is fixed with a plurality of PDC cutting teeth (1-2), its characterized in that along the circumferencial direction: two vertical openings (1-3) have been seted up to the pipe wall top symmetry of drill bit body (1), and drill bit body (1) internal clearance is provided with promotes plectane (2), promote plectane (2) circumferential position system has two fixture block archs (2-1), two fixture block archs (2-1) symmetry set up and respectively with two vertical openings (1-3) sliding connection, the inner wall below of drill bit body (1) is provided with a plurality of rubber ring constant head tanks along vertical equidistant, and pass through a plurality of rubber ring constant head tanks bonding fixation have a plurality of wear-resisting anti-skidding rings (3), every the inner wall setting of the equal protrusion drill bit body (1) of interior anchor ring (3), the highway is experimental with the drill bit still is equipped with and takes precautions against earthquakes and quivers the mechanism group, take precautions against earthquakes the mechanism group and include slip ring (4), core slip ring (8) down, The drill bit comprises a plurality of elastic telescopic supporting rods and a plurality of supporting foot rods (9), wherein an upper sliding ring (4) and a lower sliding ring (8) are sleeved outside the pipe wall of a drill bit body (1) in a sliding mode, the upper sliding ring (4) is provided with a threaded through hole along the radial direction and is screwed with a fastening bolt (4-1) in a matching mode, the upper sliding ring (4) can be fastened and positioned with the drill bit body (1) through the fastening bolt (4-1), the lower surface of the upper sliding ring (4) is vertically fixed with the plurality of elastic telescopic supporting rods at equal angles, each elastic telescopic supporting rod comprises an outer pipe (5), an inner rod (6) and a high-strength pressure spring (7), the upper end of the outer pipe (5) is fixedly connected with the upper sliding ring (4), the upper end of the inner rod (6) is inserted into the lower end of the outer pipe (5) in a sliding mode, the upper end face of the inner rod (6) is fixedly, the ball (6-1) is abutted against the upper surface of the lower sliding ring (8), a plurality of supporting foot rods (9) are vertically fixed on the lower surface of the lower sliding ring (8) at equal angles, and the lower ends of the supporting foot rods (9) are made to be conical.

2. The drill bit for road coring test as set forth in claim 1, wherein: the pushing circular plate (2) is provided with a center hole, and the middle positions of the outer end faces of the two clamping block protrusions (2-1) are respectively provided with a jack in a concave mode.

3. The drill bit for road coring test as set forth in claim 1, wherein: the wear-resistant anti-slip ring (3) protrudes out of the inner wall of the drill bit body (1) by 1-3 mm.

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