CN211144377U

CN211144377U - Drill bit of rotary drilling rig

Info

Publication number: CN211144377U
Application number: CN201921477508.5U
Authority: CN
Inventors: 潘茜; 周灿朗; 林湘; 陈相宇; 刘加福; 游杰; 邓嘉宁; 李江; 李甫福
Original assignee: Foshan Track Traffic Design Research Institute Co ltd
Current assignee: Foshan Track Traffic Design Research Institute Co ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-07-31
Anticipated expiration: 2029-09-05

Abstract

The utility model relates to a dig rig technical field soon, disclose a dig rig drill bit soon, including digging the rig drill bit body soon, the surface of digging the rig drill bit body soon is equipped with the first lifting hook group and a set of second lifting hook group that are parallel to each other, first lifting hook group is including the first lifting hook of a plurality of annular equipartitions, second lifting hook group is including the second lifting hook of a plurality of annular equipartitions, first lifting hook with the shape of second lifting hook is different. The utility model provides a dig rig drill bit soon sets up the different first lifting hook of a plurality of shapes and second lifting hook through the surface at the rig drill bit body of digging soon, and the anchor rope winding after cutting off is after digging the surface of rig drill bit body soon, can be in hanging of first lifting hook and second lifting hook, under the pulling action, along with digging the anchor rope of rig drill bit body soon and carrying to ground completely, avoids tunneling the construction to the shield and brings the risk. The utility model discloses simple structure, excellent in use effect easily uses widely.

Description

Drill bit of rotary drilling rig

Technical Field

The utility model relates to a dig rig technical field soon, especially relate to a dig rig drill bit soon.

Background

The shield method becomes the main construction method of domestic underground tunnels and is widely applied to underground railway construction. In the subway shield construction process, when encountering the existing anchor cable, the anchor cable is usually cut off by a rotary drilling rig, the tensile stress of the anchor cable is released, however, for the conventional rotary drilling bit, the side wall is smooth, the carrying and wrapping capacity is poor, so that the anchor cable after being partially cut off slides down and still remains in the soil body, and great risk is brought to shield tunneling construction.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides a dig rig drill bit soon can cut off and carry it to ground completely behind the anchor rope in underground works, avoids bringing the risk to the shield tunnelling construction.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a rotary drilling rig drill bit, includes rotary drilling rig drill bit body, rotary drilling rig drill bit body's surface is equipped with first lifting hook group and at least a set of second lifting hook group that are parallel to each other, first lifting hook group includes the first lifting hook of a plurality of annular equipartitions, second lifting hook group includes the second lifting hook of a plurality of annular equipartitions, first lifting hook with the shape of second lifting hook is different.

Preferably, the shape of the first hook is isosceles trapezoid, and the shape of the second hook is L.

Preferably, the upper bottom side of the first hook is 4-6 cm, the lower bottom side is 8-12 cm, the height is 13-17 cm, and the thickness is 1.5-2.5 cm.

Preferably, the height of the second hook is 13-17 cm, the thickness is 1.5-2.5 cm, and the width is 8-12 cm.

Preferably, the first lifting hook group is arranged at the upper end of the drill bit body of the rotary drilling rig, and the upper end of the first lifting hook exceeds the end face of the upper end of the drill bit body of the rotary drilling rig.

Preferably, the second lifting hook groups comprise two groups which are arranged in parallel, and the two groups of second lifting hook groups are respectively arranged in the middle and the lower part of the drill bit body of the rotary drilling rig.

Preferably, the first hooks of the first hook group and the second hooks of the two second hook groups are arranged in a staggered manner in the vertical direction.

Preferably, the number of the first hooks of the first hook group is 4.

Preferably, the number of the second hooks of one set of the second hook set is 4.

Preferably, the upper end of the first lifting hook exceeds the end face of the upper end of the drill bit body of the rotary drilling rig by 4-6 cm.

The utility model discloses a dig rig drill bit soon compares with prior art, and its beneficial effect lies in: the first lifting hooks and the second lifting hooks in a plurality of different shapes are arranged on the surface of the drill bit body of the rotary drilling rig, the cut anchor cable is wound on the surface of the drill bit body of the rotary drilling rig, and can be completely carried to the ground along with the lifting of the drill bit body of the rotary drilling rig under the hanging and dragging effects of the first lifting hooks and the second lifting hooks, so that the risk of shield tunneling construction is avoided. The utility model discloses simple structure, excellent in use effect easily uses widely.

Drawings

Fig. 1 is the utility model discloses a dig the structure sketch map of rig drill bit soon.

Wherein: 1-a drill bit body of the rotary drilling rig, 2-a first lifting hook and 3-a second lifting hook.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1, the utility model provides a dig rig drill bit soon of preferred embodiment, including digging rig drill bit body 1 soon, it is equipped with first lifting hook group and at least a set of second lifting hook group that is parallel to each other to dig rig drill bit body 1's surface soon, first lifting hook group is including the first lifting hook 2 of a plurality of annular equipartitions, second lifting hook group is including the second lifting hook 3 of a plurality of annular equipartitions, first lifting hook 2 with the shape of second lifting hook 3 is different.

According to the rotary drilling rig drill bit based on the technical characteristics, the first lifting hooks 2 and the second lifting hooks 3 in a plurality of different shapes are arranged on the surface of the rotary drilling rig drill bit body 1, the cut anchor cable is wound on the surface of the rotary drilling rig drill bit body 1, the cut anchor cable can be completely carried to the ground along with the lifting of the rotary drilling rig drill bit body 1 under the hanging and dragging effects of the first lifting hooks 2 and the second lifting hooks 3, and the risk brought to shield tunneling construction is avoided. The utility model discloses simple structure, excellent in use effect easily uses widely.

In this embodiment, the first hook 2 is shaped like an isosceles trapezoid, the upper bottom side of the first hook 2 is 4-6 cm, the lower bottom side of the first hook 2 is 8-12 cm, the height of the first hook is 13-17 cm, and the thickness of the first hook is 1.5-2.5 cm, preferably, the upper bottom side of the first hook 2 is 5 cm, the lower bottom side of the first hook 2 is 10 cm, the height of the second hook is 15 cm, and the thickness of the second hook 3 is 2 cm, the height of the second hook 3 is L type, the thickness of the second hook 3 is 13-17 cm, the thickness of the second hook is 1.5-2.5 cm, and the width of the second hook is 8-12 cm, preferably, the height of the second hook 3 is 15 cm, the thickness of the second hook is 2 cm, and the width of the second hook is 10 cm, the first hook 2 and the second hook 3 are both connected to the drill bit body 1 of the rotary drilling rig in a welding manner, and can be cut off after an anchor cable is removed, so that.

In this embodiment, the first hook group is arranged at the upper end of the drill bit body 1 of the rotary drilling rig, and the upper end of the first hook 2 exceeds the end surface of the upper end of the drill bit body 1 of the rotary drilling rig, so that the anchor cable can be hung conveniently. Specifically, the upper end of the first hook 2 exceeds the end surface of the upper end of the rotary drilling rig bit body 1 by 4-6 cm, preferably by 5 cm.

In this embodiment, the second hook groups include two groups arranged in parallel, and the two groups of second hook groups are respectively arranged in the middle and the lower part of the drill bit body 1 of the rotary drilling rig. The first lifting hooks 2 of the first lifting hook group and the second lifting hooks 3 of the two second lifting hook groups are arranged in a staggered mode in the vertical direction, and therefore a better hanging effect can be achieved on the anchor cable.

In this embodiment, preferably, the number of the first hooks 2 of the first hook group is 4; the number of the second hooks 3 of one set of the second hook set is 4.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A rotary drilling rig drill bit is characterized in that: the drill bit body of the rotary drilling rig is included, a first lifting hook group and at least one group of second lifting hook groups which are parallel to each other are arranged on the outer surface of the drill bit body of the rotary drilling rig, the first lifting hook group comprises first lifting hooks which are uniformly distributed in a plurality of rings, the second lifting hooks comprise second lifting hooks which are uniformly distributed in a plurality of rings, and the first lifting hooks are different from the second lifting hooks in shape.

2. The drill bit of the rotary drilling rig according to claim 1, wherein the first hook is shaped like an isosceles trapezoid, and the second hook is shaped like L.

3. The rotary drilling rig drill bit of claim 2, wherein: the length of the upper bottom edge of the first lifting hook is 4-6 cm, the length of the lower bottom edge of the first lifting hook is 8-12 cm, the height of the first lifting hook is 13-17 cm, and the thickness of the first lifting hook is 1.5-2.5 cm.

4. The rotary drilling rig drill bit of claim 2, wherein: the height of the second hook is 13-17 cm, the thickness of the second hook is 1.5-2.5 cm, and the width of the second hook is 8-12 cm.

5. The rotary drilling rig drill bit of claim 1, wherein: the first lifting hook group is arranged at the upper end of the rotary drilling rig drill bit body, and the upper end of the first lifting hook exceeds the end face of the upper end of the rotary drilling rig drill bit body.

6. The rotary drilling rig drill bit according to any one of claims 1 to 5, characterized in that: the second lifting hook groups comprise two groups which are arranged in parallel, and the two groups of second lifting hook groups are respectively arranged in the middle and the lower part of the drill bit body of the rotary drilling rig.

7. The rotary drilling rig drill bit of claim 6, wherein: the first lifting hooks of the first lifting hook group and the second lifting hooks of the two groups of second lifting hook groups are arranged in a staggered mode in the vertical direction.

8. The rotary drilling rig drill bit according to any one of claims 1 to 5, characterized in that: the number of the first hooks of the first hook group is 4.

9. The rotary drilling rig drill bit according to any one of claims 1 to 5, characterized in that: the number of the second hooks of one set of the second hook set is 4.

10. The rotary drilling rig drill bit of claim 5, wherein: the upper end of the first lifting hook exceeds the end face of the upper end of the rotary drilling rig drill bit body by 4-6 cm.