CN213205615U

CN213205615U - Automatic salvage and dig drill bit device soon

Info

Publication number: CN213205615U
Application number: CN202022247270.6U
Authority: CN
Inventors: 吴国师
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-05-14
Anticipated expiration: 2030-10-12

Abstract

The utility model discloses an automatic salvage and dig drill bit device soon, main technical characteristic is: including the square head body, the couple fixer, the couple limiting plate, couple and bolt, set up the cotter hole on the square head body, the couple fixer welds the lower terminal surface at the square head body, the couple upper end sets up the round hole, the bolt passes the round hole of couple respectively and installs the couple on the couple fixer, the bottom of couple sets up an inclined plane respectively, the top on inclined plane sets up an acute angle incision, acute angle notched minor face parallels with the bottom face of couple fixer, the couple limiting plate is installed respectively at the bottom face of couple fixer and makes a side of couple limiting plate coincide with the vertical section of couple respectively, the acute angle notched long limit of couple is connected with the vertical section of couple. The beneficial effects are that: the drill bit is salvaged without a diver diving, so that accidents are avoided, and the salvage efficiency of the rotary drilling drill bit is improved.

Description

Automatic salvage and dig drill bit device soon

Technical Field

The utility model relates to a fishing device, especially an automatic salvage dig drill bit device soon.

Background

With the continuous development of infrastructure construction in China, pile foundation construction is rapidly developed, and pile foundation construction in buildings adopts cast-in-place piles according to the requirements of bearing capacity of high-rise buildings, super high-rise buildings, large bridges and the like.

The rotary drilling rig is a soil taking and hole forming construction machine, and has the characteristics of high construction speed, high hole forming quality, small environmental pollution, flexible and convenient operation, high safety performance and strong applicability, so that the rotary drilling rig is widely applied to hole forming operation of building foundation engineering and becomes a preferred construction device for drilling cast-in-place piles. However, when the rotary drilling rig is constructed, the drill bit falls off in the hole due to various reasons, a diver generally dives the fishing drill bit for conventional fishing, and due to underwater operation, uncertain factors are too many, so that serious safety accidents are caused once danger occurs, the diver has life danger, and particularly, the underwater fishing drill bit with a long pile foundation and a large pile diameter can cause personal safety once an accident occurs.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome not enough among the above-mentioned technical problem, provide an automatic salvage and dig drill bit device soon.

In order to overcome the technical problem, the utility model discloses a technical scheme is:

including the square head body, the couple fixer, the couple limiting plate, couple and bolt, set up the cotter hole on the square head body, the couple fixer welds the lower terminal surface at the square head body, the couple upper end sets up the round hole, the bolt passes the round hole of couple respectively and installs the couple on the couple fixer, the bottom of couple sets up an inclined plane respectively, the top on inclined plane sets up an acute angle incision, acute angle notched minor face parallels with the bottom face of couple fixer, the couple limiting plate is installed respectively at the bottom face of couple fixer and makes a side of couple limiting plate coincide with the vertical section of couple respectively, the acute angle notched long limit of couple is connected with the vertical section of couple.

Furthermore, the diameter of the round hole at the upper end of the hook is larger than that of the bolt.

Compared with the prior art, the beneficial effects of the utility model are that: the drill bit is salvaged without a diver diving, so that accidents are avoided, and the salvage efficiency of the rotary drilling drill bit is improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the operation of the present invention.

Detailed Description

As shown in the figure 1-2, the rotary drilling rig comprises a square head body 1, a hook fixer 2, a hook limiting plate 3, a hook 4 and a bolt 5, wherein a pin hole 6 is arranged on the square head body 1, a drill rod of the rotary drilling rig is arranged in the square head body 1, pass the connection that pin hole 6 is used for the drilling rod through the pin and fix, couple fixer 2 welding is at the lower terminal surface of

square head body

1, 4 upper ends of couple set up round hole 7, bolt 5 passes round hole 7 of couple 4 respectively and installs couple 4 on couple fixer 2, the bottom of couple 4 sets up an inclined plane 8 respectively, the top of inclined plane 8 sets up an acute angle incision 9, the minor face of acute angle incision 9 parallels with the bottom face of couple fixer 2, couple limiting plate 3 is installed respectively at the bottom face of couple fixer 2 and makes a side of couple limiting plate 3 coincide with the vertical section 10 of couple 4 respectively, the long limit of the acute angle incision 9 of couple 4 is connected with the vertical section 10 of couple 4.

Furthermore, the diameter of a round hole 7 at the upper end of the hook 4 is larger than that of the bolt 5, so that the hook can rotate freely.

Referring to fig. 2, it can be seen that: when automatic fishing of the rotary drilling bit is implemented, a drill rod of the rotary drilling rig is arranged in the square head body 1, the square head body 1 carries out fishing of the rotary drilling bit in water under rotation of the drill rod of the rotary drilling rig, the hook 4 can only expand outwards due to the limitation of the hook limiting plate 3 on the hook 4 in the rotation process of the square head body 1, and when the hook 4 contacts the underwater drill rod, the inclined surface 8 of the hook 4 contacts the rotary drilling bit firstly, as shown in a diagram a in fig. 2. As shown in the diagram b in fig. 2, as the drill rod of the rotary drilling rig drives the square head body 1 to move downwards continuously, when the inclined plane of the hook contacts and crosses the maximum profile of the underwater rotary drilling bit, the vertical section 10 of the hook 4 is overlapped through one side surface of the hook limiting plate 3, the square head body 1 is lifted by the rotary drilling rig, the acute angle notches 9 of the hooks 4 on the left side and the right side are clamped at the bottom end surface of the maximum profile of the underwater rotary drilling bit, and the hooks 4 on the front side and the rear side are clamped in the aperture of the rotary drilling bit, as shown in the diagram c in fig. 2, the rotary drilling bit is fished out along with the continuous upward lifting of the square head body 1.

Therefore, the drill bit is salvaged without diving by a diver, accidents are avoided, and the salvage efficiency of the rotary drilling drill bit is improved.

The present invention is not limited to the precise arrangements described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An automatic salvage rotary drilling bit device comprises a square head body, a hook fixing device, a hook limiting plate, a hook and a bolt, and is characterized in that a pin hole is formed in the square head body, the hook fixing device is welded to the lower end face of the square head body, a round hole is formed in the upper end of the hook, the bolt penetrates through the round hole of the hook respectively to install the hook on the hook fixing device, an inclined plane is arranged at the bottom end of the hook respectively, an acute-angle notch is formed in the top end of the inclined plane, the short edge of the acute-angle notch is parallel to the bottom end face of the hook fixing device, the hook limiting plate is installed on the bottom end face of the hook fixing device respectively, one side face of the hook limiting plate is made to coincide.

2. The automatic fishing rotary drilling bit device according to claim 1, is characterized in that: the round hole at the upper end of the hook is larger than the diameter of the bolt.