CN211648000U - Extension arm and extension drill bit - Google Patents
Extension arm and extension drill bit Download PDFInfo
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- CN211648000U CN211648000U CN201921744583.3U CN201921744583U CN211648000U CN 211648000 U CN211648000 U CN 211648000U CN 201921744583 U CN201921744583 U CN 201921744583U CN 211648000 U CN211648000 U CN 211648000U
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- shaft hole
- extension
- drill bit
- arm
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Abstract
The utility model provides an extending arm and extend drill bit, including the extending arm body, the extending arm body is equipped with the body shaft hole and extends the shaft hole, the body shaft hole set up in one side of extending arm body, extend the shaft hole set up in one side in body shaft hole is kept away from to the extending arm body, the extending arm body is equipped with drill bit cutter installation position in one side of keeping away from the body shaft hole. The beneficial effects of the utility model reside in that: the extending arm with higher gravity center in the extending state is provided, so that the extending arm has higher potential energy when falling down, and can finish automatic recovery under the action of gravity when losing supporting force.
Description
Technical Field
The utility model belongs to the technical field of capital construction drill bit structure technique and specifically relates to indicate an extension arm and extension drill bit.
Background
In the rock stratum pile foundation engineering, such as building bearing platforms, bridge piling and the like, the application of the hydraulic drill bit is very wide, when the hydraulic drill bit works, a section of hole is drilled in a contraction shape, the hole is deformed and expanded underground, then the hole is drilled continuously, and the shape of the drilled hole is small at the top and big at the bottom, like a wine bottle.
The hydraulic drill bit extending arm is extended under the action of the hydraulic cylinder, when the drilling machine stops, the hydraulic cylinder cannot automatically return oil, the hydraulic cylinder still keeps the pushing or stretching of the extending arm under the action of pressure, and external force is applied to change the state of the hydraulic cylinder so as to retract the extending arm.
Many situations can occur in the pile foundation engineering process, and if the engineering stops under an unexpected situation, the expanded under-reamed drill bit cannot be taken out, so that the prior art needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provided are a hydraulic extending arm and an extending drill bit which are easy to recover.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides an extending arm, includes the extending arm body, the extending arm body is equipped with the body shaft hole and extends the shaft hole, the body shaft hole set up in one side of extending arm body, extend the shaft hole set up in one side of body shaft hole is kept away from to the extending arm body, the extending arm body is equipped with drill bit cutter installation position in one side of keeping away from the body shaft hole.
Furthermore, the extending arm body comprises a first side plate and a second side plate, and a reinforcing rib plate is clamped between the first side plate and the second side plate.
Furthermore, a first lug plate is respectively attached to one side of the body shaft hole, which is opposite to the first side plate and the second side plate, and a first lug plate through hole is formed in the first lug plate, which corresponds to the body shaft hole; the extension shaft hole in the one side that first curb plate and second curb plate are relative respectively pastes and is equipped with the second otic placode, the second otic placode corresponds the extension shaft hole is equipped with the second otic placode through-hole.
Furthermore, wear to be equipped with first axle sleeve in body shaft hole and the first otic placode through-hole.
Further, a first arm base plate is attached to the side faces of the first side plate and the first hanging lug; and a second arm base plate is attached to the side surfaces of the second side plate and the second hanging lug.
Furthermore, an ear plate reinforcing rib plate is arranged between the second ear plate of the first side plate and the second ear plate of the second side plate.
Further, the extension shaft hole is lower than the center of gravity of the extension arm body.
Furthermore, a pineapple head cutter is arranged at the drill bit cutter mounting position.
The utility model discloses still relate to an extend drill bit, including any one of the aforesaid extension arm drill bit and drill bit main part, the side of drill bit main part is equipped with the extension arm connecting seat, the body shaft hole through the round pin axle with the extension arm connecting seat rotates to be connected, the below of extension arm connecting seat is equipped with the hydro-cylinder mount pad, the one end of hydro-cylinder through the round pin axle with the hydro-cylinder mount pad rotates to be connected, the other end of hydro-cylinder through the round pin axle with the extension shaft hole rotates to be connected.
Furthermore, the drill bit main body is provided with an oil cylinder groove, and the oil cylinder mounting seat is arranged in the oil cylinder groove.
The beneficial effects of the utility model reside in that: the extending arm with higher gravity center in the extending state is provided, so that the extending arm has higher potential energy when falling down, and can finish automatic recovery under the action of gravity when losing supporting force.
Drawings
The specific structure of the present invention is detailed below with reference to the accompanying drawings:
fig. 1 is a schematic view of the overall structure of the extending arm of the present invention;
fig. 2 is a schematic sectional structure view of the extending arm of the present invention;
fig. 3 is a schematic cross-sectional view of the extendable drill according to the present invention.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.
Referring to fig. 1 to 3, a telescopic boom includes a telescopic boom body 20, a side surface of the telescopic boom body 20 is substantially triangular, the telescopic boom body 20 is provided with a body shaft hole 102 and a telescopic shaft hole 104, the body shaft hole 102 is disposed at one side of the telescopic boom body 20 and is close to a vertex angle of the triangle, the telescopic shaft hole 104 is disposed at an opposite side of the telescopic boom body 20 away from the body shaft hole 102 and is close to the vertex angle, wherein the telescopic shaft hole 104 is substantially in the middle of the opposite side, and a drill bit tool mounting position is disposed at the side of the telescopic boom body 20 away from the body shaft hole 102.
The extension arm body 20 comprises a first side plate 100 and a second side plate 200, reinforcing rib plates are arranged between the first side plate 100 and the second side plate 200 in a clamping mode, nine reinforcing rib plates are arranged, and comprise a first reinforcing rib plate 111, a second reinforcing rib plate 112, a third reinforcing rib plate 113, a fourth reinforcing rib plate 114, a fifth reinforcing rib plate 115, a sixth reinforcing rib plate 116, a seventh reinforcing rib plate 117, an eighth reinforcing rib plate 118 and a ninth reinforcing rib plate 119, wherein the first reinforcing rib plate 111 and the second reinforcing rib plate 112 are arranged on one side of the body shaft hole 102, the fourth reinforcing rib plate 114 and the second reinforcing rib plate 112 are arranged at an angle, the second reinforcing rib plate 112, the fourth reinforcing rib plate 114, the fifth reinforcing rib plate 115, the sixth reinforcing rib plate 116, the seventh reinforcing rib plate 117 and the eighth reinforcing rib plate 118 are sequentially connected end to end, and the second reinforcing rib plate 112, the fourth reinforcing rib plate 114, the fifth reinforcing rib plate 115, the sixth reinforcing rib plate, Fifth deep floor 115, sixth deep floor 116, seventh deep floor 117 and eighth deep floor 118 surround and form a closed loop, third deep floor 113 forms the triangle-shaped closed loop structure with second deep floor 112 and fourth deep floor 114, ninth deep floor 119 and first curb plate 100 laminating setting, a side of ninth deep floor 119 meets seventh deep floor 117, another side of ninth deep floor 119 meets eighth deep floor 118, all be connected through the welded mode between deep floor and the deep floor and between deep floor and the curb plate, can guarantee the structural strength of extending arm like this by furthest, increase drill bit reliability. Furthermore, a groove is formed in each reinforcing rib plate, so that the welding area can be increased to ensure the structural strength of the extension arm.
In order to facilitate connection of the oil cylinder 30 and the extending arm 20, the first rib plate 111 is provided with a first rib plate opening 1111, the second rib plate 112 is provided with a second rib plate opening 1112, the eighth rib plate 118 is provided with an eighth rib plate opening 1181, the first rib plate opening 1111, the second rib plate opening 1112 and the eighth rib plate opening 1181 form an extending arm opening, and the movable part of the oil cylinder 30 extends into the extending arm from the extending arm opening and is connected with the extending arm in the extending shaft hole 104 through a pin shaft.
Further, a first ear plate 101 is respectively attached to one side of the body shaft hole 102 opposite to the first side plate 100 and the second side plate 200, and a first ear plate through hole is formed in the first ear plate 101 corresponding to the body shaft hole; the extending shaft hole 104 is provided with a second ear plate 105 on the opposite side of the first side plate 100 and the second side plate 200, and the second ear plate 105 is provided with a second ear plate through hole corresponding to the extending shaft hole 104.
The first ear plate 101 is attached to the first side plate 100 in a welding manner, and the second ear plate 105 is attached to the second side plate 200 in a welding manner, so that the structural strength of the body shaft hole 102 and the extension shaft hole 104 can be effectively increased.
Further, a first shaft sleeve 103 penetrates through the body shaft hole 102 and the first ear plate through hole.
Wear to establish the axle sleeve in the shaft hole, when the structural strength in multiplicable shaft hole, strengthen the wear resistance in shaft hole, effectively prolonged the life of drill bit.
Further, a first arm pad 106 is attached to the side of the first side plate 100 and the first hanging lug; and a second arm base plate is attached to the side surfaces of the second side plate and the second hanging lug.
The structural strength of the body shaft hole 102 can be increased by welding the first arm base plate 106 with the first suspension loop 101 and the first side plate 100 in a welding mode, and the structural strength of the body shaft hole can be increased by welding the second arm base plate with the second suspension loop and the second side plate in a welding mode.
Further, an ear plate reinforcing rib plate 120 is arranged between the second ear plate 105 of the first side plate 100 and the second ear plate of the second side plate 200.
One side of the ear plate reinforcing rib plate 120 is welded to the second ear plate 105 of the first side plate 100, and the other side of the ear plate reinforcing rib plate 120 is welded to the second ear plate of the second side plate 200, so that the structural strength of the extension arm can be increased.
Further, the extension shaft hole 104 is lower than the center of gravity of the extension arm body.
The extension shaft hole is lower than the gravity center of the extension arm body, so that the extension arm can obtain larger potential energy in an extension state.
Further, a pineapple head cutter 300 is arranged at the drill bit cutter mounting position.
The pineapple head cutter is adopted, so that the drill bit is more suitable for rock stratum drilling work.
From the above description, the beneficial effects of the present invention are: the extending arm with higher gravity center in the extending state is provided, so that the extending arm has higher potential energy when falling down, and can finish automatic recovery under the action of gravity when losing supporting force.
The utility model discloses still relate to an extend drill bit, including any one of the aforesaid extension arm 20 and drill bit main part 10, the side of drill bit main part 10 is equipped with the extension arm connecting seat, body shaft hole 102 through the round pin axle with the extension arm connecting seat rotates to be connected, the below of extension arm connecting seat is equipped with hydro-cylinder mount pad 12, the one end of hydro-cylinder through the round pin axle with hydro-cylinder mount pad 12 rotates to be connected, the other end of hydro-cylinder through the round pin axle with extension shaft hole 104 rotates to be connected. The drill bit main body is provided with an oil cylinder groove 11, and the oil cylinder mounting seat 12 is arranged in the oil cylinder groove 11.
In this embodiment, the pivot position of extending arm is in the side of extending arm focus, guarantees that the extending arm also can guarantee that the hydro-cylinder withdraws completely when accomodating in the drill bit main part completely.
And the oil cylinder is arranged below the extending arm, so that the oil cylinder can play a role in buffering in the process of recovering the extending arm.
Compared with the prior art, the utility model has the advantages that:
1. when the machine is stopped, the extending arm can be completely recovered by self so as to save manual operation;
2. self-recovery, slow speed and safety;
3. simple structure and high effect.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. An extension arm, characterized in that: including the extending arm body, the extending arm body is equipped with the body shaft hole and extends the shaft hole, the body shaft hole set up in one side of extending arm body, extend the shaft hole set up in one side that the body shaft hole was kept away from to the extending arm body, the extending arm body is equipped with drill bit cutter installation position in one side of keeping away from the body shaft hole.
2. The extension arm of claim 1, wherein: the extension arm body comprises a first side plate and a second side plate, and a reinforcing rib plate is clamped between the first side plate and the second side plate.
3. The extension arm of claim 2, wherein: the body shaft hole is respectively provided with a first lug plate at one side opposite to the first side plate and the second side plate in an attaching manner, and the first lug plate is provided with a first lug plate through hole corresponding to the body shaft hole; the extension shaft hole in the one side that first curb plate and second curb plate are relative respectively pastes and is equipped with the second otic placode, the second otic placode corresponds the extension shaft hole is equipped with the second otic placode through-hole.
4. The extension arm of claim 3, wherein: first axle sleeves penetrate through the body axle hole and the first lug plate through hole.
5. The extension arm of claim 4, wherein: a first arm base plate is attached to the side surfaces of the first side plate and the first hanging lug; and a second arm base plate is attached to the side surfaces of the second side plate and the second hanging lug.
6. The extension arm of claim 5, wherein: and an ear plate reinforcing rib plate is arranged between the second ear plate of the first side plate and the second ear plate of the second side plate.
7. The extension arm of claim 6, wherein: the extension shaft hole is lower than the gravity center of the extension arm body.
8. The extension arm of claim 7, wherein: the drill bit tool mounting position is provided with a pineapple head tool.
9. An extension drill bit, characterized by: the drill bit comprises the extension arm and a drill bit main body according to any one of claims 1 to 8, wherein an extension arm connecting seat is arranged on the side surface of the drill bit main body, a body shaft hole is rotatably connected with the extension arm connecting seat through a pin shaft, an oil cylinder mounting seat is arranged below the extension arm connecting seat, one end of an oil cylinder is rotatably connected with the oil cylinder mounting seat through a pin shaft, and the other end of the oil cylinder is rotatably connected with the extension shaft hole through a pin shaft.
10. The extension drill bit of claim 9, wherein: the drill bit main body is provided with an oil cylinder groove, and the oil cylinder mounting seat is arranged in the oil cylinder groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921744583.3U CN211648000U (en) | 2019-10-17 | 2019-10-17 | Extension arm and extension drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921744583.3U CN211648000U (en) | 2019-10-17 | 2019-10-17 | Extension arm and extension drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211648000U true CN211648000U (en) | 2020-10-09 |
Family
ID=72690675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921744583.3U Active CN211648000U (en) | 2019-10-17 | 2019-10-17 | Extension arm and extension drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211648000U (en) |
-
2019
- 2019-10-17 CN CN201921744583.3U patent/CN211648000U/en active Active
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