CN208981961U - A kind of combined type bottom expanding drill body - Google Patents
A kind of combined type bottom expanding drill body Download PDFInfo
- Publication number
- CN208981961U CN208981961U CN201821202673.5U CN201821202673U CN208981961U CN 208981961 U CN208981961 U CN 208981961U CN 201821202673 U CN201821202673 U CN 201821202673U CN 208981961 U CN208981961 U CN 208981961U
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- CN
- China
- Prior art keywords
- extending arm
- main body
- drill
- case
- arm case
- Prior art date
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Abstract
The utility model discloses a kind of combined type bottom expanding drill bodies, including extending arm case, drill main body, widen main body, the extending arm case and widens main body and pass through screw respectively and connect with drill main body, oil cylinder, extending arm are set on extending arm case, described oil cylinder one end connects extending arm case, the other end connects extending arm, and the extending arm is connected by screw to extending arm case.Extending arm in the utility model and to widen main part detachable, easy to disassemble and transport, remaining bit part can be used alone, and not limit its use occasion because bit diameter increases, drill bit possesses another kind of change shape outside multi-level hierarchical variation simultaneously, possesses more small size diameters.
Description
Technical field
The utility model relates to engineering machinery field, specifically a kind of combined type bottom expanding drill body.
Background technique
The investment with the country in infrastructure construction field continued to increase in recent years, and corresponding infrastructural project is mechanical
Demand is also being constantly increasing, and in infrastructure engineering equipment, such as drilling machine, mill pile foundation, shield machine, frequently encounter fortune
Defeated problem, when bit body diameter is excessive, transport would generally be highly difficult, at this moment will carry out splitting to equipment and transport, existing
Integral (drill) bit body is not easy to installation, transport, lifting, upper in application for the other sizes of later period repacking also without flexibility, i.e.,
Make to bit body carry out grading design, the minimum diameter of the bit body of major diameter be also it is very big, just when machine need to bore aperture
It is inconvenient.
Summary of the invention
The purpose of this utility model is to provide a kind of combined type bottom expanding drill bodies, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the utility model provides the following technical solutions: a kind of combined type bottom expanding drill body, including stretches
Swing arm case, drill main body widen main body, the extending arm case and widen main body and pass through screw respectively and connect with drill main body, stretch
Oil cylinder, extending arm are set on swing arm case, and described oil cylinder one end connects extending arm case, and the other end connects extending arm, the extending arm
It is connected by screw to extending arm case.
As a further solution of the present invention: the extending arm quantity can be three, four or six.
Compared with prior art, the utility model has the beneficial effects that
1. aperture size is more；
2. combined type is small in size, weight saving, it is readily transported assembly；
3. combination type drill bit can make larger diameter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of extending arm case in the utility model.
Fig. 3 is the structural schematic diagram for widening main body in the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1~3, a kind of combined type bottom expanding drill body, including extending arm case 1, drill main body 4, widen main body 5,
The extending arm case 1 and widens main body 5 and connect with drill main body 4 by screw respectively, it is easy to disassemble and transport, while main body exists
Small-bore drilling is still adapted in the case where broadening diameter, and oil cylinder 2, extending arm 3, the extending arm 3 are set on extending arm case 1
Extending arm case 1 can be connected for three arms or four arms or six arms, described 2 one end of oil cylinder, the other end connects extending arm 3, stretches for driving
Swing arm 3 is unfolded, and the extending arm 3 is connected by screw to extending arm case 1, easy to disassemble.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (2)
1. a kind of combined type bottom expanding drill body, it is characterised in that: including extending arm case, drill main body, widen main body, the stretching, extension
Arm case and widen main body and pass through screw respectively and connect with drill main body, oil cylinder, extending arm, the oil cylinder one are set on extending arm case
End connection extending arm case, the other end connect extending arm, and the extending arm is connected by screw to extending arm case.
2. a kind of combined type bottom expanding drill body according to claim 1, it is characterised in that: the extending arm quantity can be
Three, four or six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821202673.5U CN208981961U (en) | 2018-07-27 | 2018-07-27 | A kind of combined type bottom expanding drill body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821202673.5U CN208981961U (en) | 2018-07-27 | 2018-07-27 | A kind of combined type bottom expanding drill body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208981961U true CN208981961U (en) | 2019-06-14 |
Family
ID=66780558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821202673.5U Active CN208981961U (en) | 2018-07-27 | 2018-07-27 | A kind of combined type bottom expanding drill body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208981961U (en) |
-
2018
- 2018-07-27 CN CN201821202673.5U patent/CN208981961U/en active Active
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