CN209976486U

CN209976486U - Drill bit end structure of drilling rod

Info

Publication number: CN209976486U
Application number: CN201920586713.9U
Authority: CN
Inventors: 陈亚东; 陆凡; 邱全; 蔡江东; 孙华圣; 曹茂柏
Original assignee: Huaiyin Institute of Technology
Current assignee: Huaiyin Institute of Technology
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-01-21
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a drill bit end structure of drilling rod, the drilling rod is inside has the chamber that fills that link up from top to bottom in the axle center, and the drilling rod bottom is the back taper form, including the valve gap that the chamber was filled to the pole bottom and stifled, the pole body lateral wall excavation breach in the chamber was filled to the pole bottom, and the draw-in groove is seted up to the bottom of another side, and the connecting rod is established on one side upper portion of valve gap and is articulated in the breach, and the another side is established protruding ka tai joint in the draw-in groove, and the cone. When the pump pressure concrete is lifted, the valve cover is opened under impact, the structure is simple, and the operability is good. The utility model discloses the shutoff fills the valve gap and the drilling rod end internal connection in chamber, and the outer peripheral face forms the back taper, can not form the virtual soil in the bottom of punching, promotes the joint strength of stake and ground.

Description

Drill bit end structure of drilling rod

Technical Field

The utility model relates to a civil engineering becomes stake technical field, more specifically says that it relates to a drill bit end structure of drilling rod.

Background

And (3) piling the foundation, namely drilling a hole in the deep part of the foundation by using a drill rod, turning the drill rod upwards when the designed depth is reached, opening a valve cover of which the end plug is used for plugging the pouring cavity, pumping fluid concrete into the hole under high pressure, and forming the pile after the concrete is solidified. At present, the structure of a drill bit end is mostly shown in figure 1, two vertical outer connecting columns are arranged on two sides of the conical surface of an inverted cone-shaped rod body at the bottom end of a drill rod, a valve cover is composed of a valve plate and a plurality of cones on the bottom surface of the valve plate, one side of the valve plate is rotatably connected to the connecting columns through a rotating shaft, an unlocking buckle is arranged on the connecting column on the other side of the valve plate, and the valve plate is. Because the connecting column for connecting the valve cover is arranged on the conical surface of the drill rod, loose and floating soil is easily generated at the bottom of the drill hole, and the connecting force between the pile and the foundation after pile forming is influenced.

Disclosure of Invention

Not enough to prior art exists, the utility model aims to provide a solve the drill bit end structure of a drilling rod of above-mentioned problem, the shutoff fills the valve gap and the drilling rod end internal connection in chamber, and the outer peripheral face forms the back taper, can not form the virtual soil bottom punching, promotes the joint strength who becomes stake and ground.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a drill bit end structure of drilling rod, the drilling rod is inside to have the axle center to link up from top to bottom fills the chamber, and the drilling rod bottom is the back taper, fills the valve gap in chamber including pole bottom and shutoff, and one side pole body lateral wall excavation breach in chamber is filled to the pole bottom, and the draw-in groove is seted up to the bottom of another side, and the connecting rod is established on one side upper portion of valve gap and is articulated in the breach, and the another side is established protruding ka zhu and is connect in the draw-in groove, and the. When the pump pressure concrete is lifted, the valve cover is opened under impact, the structure is simple, and the operability is good.

The utility model discloses further improve technical scheme and be, the dress is worn in the pivot to the connecting rod top rotation, and the pivot is installed in the breach.

The utility model discloses further improve technical scheme and be, the lateral wall is equipped with the elastic clamping part about in the draw-in groove. The specific elastic clamping part is a spring with the rear end fixed on the side wall of the clamping groove, and the front end of the spring is connected with a clamping plate. The convex clamping platform of the valve cover is clamped in the clamping groove more stably and cannot fall off randomly by utilizing the elastic support of the spring.

The utility model discloses further improve technical scheme again and be, the drill point is the pressure sensor who connects on the valve gap, establishes the cable passageway in the valve gap, and fills the cable access connection of establishing in the chamber, and the dress is worn in the cable passageway to the signal cable, and is terminal to be connected with pressure sensor. The pressure sensor measures pressure in real time in the drilling process, and proper operation can be conveniently carried out according to actual working conditions.

The utility model discloses the further improvement technical scheme is again, fills the signal cable that the corner of cable channel junction worn the dress in intracavity cable passageway and the valve gap is PUR shielding type spiral signal line. Prevent that the signal line from bending at the corner and breaking, influence signal transmission's stability.

The utility model discloses beneficial effect:

one, the utility model discloses the shutoff fills valve gap and the drilling rod end internal connection in chamber, the outer peripheral face forms the back taper, can not form the virtual soil bottom punching, promotes the joint strength who becomes stake and ground.

And secondly, the drill point of the drill rod adopts a pressure sensor, the foundation layered structure can be detected during drilling, the foundation layered structure is compared and verified with the numerical value obtained by static sounding in geological exploration data, and the drilling depth operation is controllable.

Drawings

FIG. 1 is a schematic view of a prior art drill bit end configuration;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic structural view when the valve cover of the utility model is opened;

fig. 4 is an enlarged view of a part of the card slot.

Detailed Description

Fig. 1 is the drill bit end structure sketch map of current drilling rod, fig. 2 to 4 show that is a drill bit end structure of drilling rod, 1 inside of drilling rod have the axle center to link up from top to bottom fill the chamber 11, 1 bottom of drilling rod is the back taper form, fill the valve gap 2 in chamber including 12 pole bottoms and shutoff, one side pole body lateral wall excavation breach 13 in chamber is filled to the pole bottom, draw-in groove 14 is seted up to the bottom of another side, valve gap 2 one side upper portion is established connecting rod 21 and is rotated through pivot 24 and articulate in breach 13, the another side is established protruding ka tai 22 joint in draw-in groove 14, the conical end of valve gap bottom forms drill point 23.

The left side wall and the right side wall in the clamping groove are provided with elastic clamping parts, the specific elastic clamping parts are springs 15 with rear ends fixed on the side walls of the clamping groove, and the front ends of the springs are connected with clamping plates 16.

The drill tip 23 is a pressure sensor connected to the valve cover, a cable channel is arranged in the valve cover 2 and connected with a cable channel 17 arranged in the filling cavity, a signal cable penetrates through the cable channel, and the tail end of the signal cable is connected with the pressure sensor. The signal cable which is arranged at the corner of the joint of the cable channel in the filling cavity and the cable channel in the valve cover in a penetrating way is a PUR shielding type spiral signal wire 3.

Claims

1. The utility model provides a drill bit end structure of drilling rod, drilling rod (1) inside have filling chamber (11) that link up from top to bottom in the axle center, its characterized in that: drilling rod (1) bottom is the back taper, including pole bottom (12) and stifled valve gap (2) that fills the chamber, pole body lateral wall excavation breach (13) on one side that the chamber was filled to the pole bottom, draw-in groove (14) are seted up to the bottom on another side, and connecting rod (21) are established on one side upper portion of valve gap (2) and articulate in breach (13), and the other side is established protruding card platform (22) joint in draw-in groove (14), and the cone end of valve gap bottom forms drill point (23).

2. A bit end construction for a drill rod as claimed in claim 1, wherein: the top of the connecting rod (21) is rotatably arranged on the rotating shaft (24) in a penetrating way, and the rotating shaft (24) is arranged in the notch (13).

3. A bit end construction for a drill rod as claimed in claim 1, wherein: the left side wall and the right side wall in the clamping groove are provided with elastic clamping parts.

4. A bit end construction for a drill rod according to claim 3, wherein: the elastic clamping component is a spring (15) with the rear end fixed on the side wall of the clamping groove, and the front end of the spring is connected with a clamping plate (16).

5. A bit end construction for a drill rod as claimed in claim 1, wherein: the drill point (23) is a pressure sensor connected to the valve cover, a cable channel is arranged in the valve cover (2) and is connected with a cable channel (17) arranged in the filling cavity, a signal cable penetrates through the cable channel, and the tail end of the signal cable is connected with the pressure sensor.

6. A bit end construction for a drill rod as claimed in claim 1, wherein: the signal cable which is arranged at the corner of the joint of the cable channel in the perfusion cavity and the cable channel in the valve cover in a penetrating way is a PUR shielding type spiral signal wire (3).