CN220908395U - Reverse punching device for hole guiding power head - Google Patents
Reverse punching device for hole guiding power head Download PDFInfo
- Publication number
- CN220908395U CN220908395U CN202322217902.8U CN202322217902U CN220908395U CN 220908395 U CN220908395 U CN 220908395U CN 202322217902 U CN202322217902 U CN 202322217902U CN 220908395 U CN220908395 U CN 220908395U
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- bearing
- power head
- cavity
- bearing seat
- shank body
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- 230000002441 reversible effect Effects 0.000 title claims abstract description 17
- 238000004080 punching Methods 0.000 title claims description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 241000227287 Elliottia pyroliflora Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to the technical field of power head reverse-driving equipment, and provides a reverse-driving device for a hole-guiding power head, which comprises a shell, wherein cavities penetrating through two ends are formed in the shell, and the shell comprises a first cavity and a second cavity; the bearing seat is rotationally connected in the first cavity; the rotating body is embedded and arranged in the second cavity; the drill bit tail body is axially pushed into the bearing seat and the rotating body in turn and extends out of the shell, the transmission part is arranged on the outer side of the drill bit tail body, and when the reverse driving device of the power head with the guide hole is lifted, the drill bit tail body can be contacted with and drive the bearing seat to rotate together.
Description
Technical Field
The utility model relates to the technical field of power head reverse-driving equipment, in particular to a hole guiding power head reverse-driving device.
Background
In the existing engineering construction, pile foundations are a common foundation engineering technology, a pile driving base adopts a hole guiding technology, the pile driving base is not separated from the use of a power head, a drill shank is used as an output part of the power head to be connected with a drill rod, and when the traditional power head reverse driving device is lifted upwards, the rotary drill shank can be contacted with the surface of a bearing seat fixed in a shell and is subjected to dynamic friction, so that the loss of the drill shank and the bearing seat is serious;
The copper bush is sleeved on the outer side of the existing drill bit tail, the fit clearance between the drill bit tail and the copper bush reaches 0.5mm, the power head shakes relatively greatly in the actual running process, the requirements of large-scale capital construction projects on hole guiding cannot be met, and particularly the requirements of large-scale capital construction projects such as river-crossing bridges, high-speed rails and the like on the perpendicularity of pile foundations are higher and higher, for example, the Haitai Yangtze bridge and the perpendicularity of a rotary spraying hole reach 3/1000. Therefore, we propose a reverse punching device for the hole guiding power head.
Disclosure of utility model
(One) solving the technical problems
The utility model provides a reverse driving device for a drill bit body, which is characterized in that a transmission part is arranged on the drill bit body, a bearing seat is assembled in a thrust roller bearing and a deep groove ball bearing, when the drill bit body is lifted upwards, the transmission part is contacted with the bearing seat, a rotary drill bit body is pressed on the bearing seat under the action of the gravity of a drill rod, at the moment, the drill bit body drives the bearing seat to rotate in a shell, static friction is arranged between the bearing seat and the bearing seat, and compared with the original dynamic friction, the abrasion degree of a contact surface of the drill bit body and the deep groove ball bearing can be greatly reduced. Through setting up bearing, can reduce original copper sheathing and bore bit shank body fit clearance 0.5mm to 0.01-0.02mm, reduce the shake range of unit head in the operation in-process, be rolling friction between bore bit shank body and the bearing pin simultaneously, when horizontal punching, original copper sheathing design takes place sliding friction with the bore bit shank body, can reduce both wearing and tearing degrees after turning into rolling friction.
(II) technical scheme
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
a pilot power head reverse-driving device, comprising:
The shell is internally provided with cavities penetrating through two ends and comprises a first cavity and a second cavity;
the bearing seat is rotationally connected in the first cavity;
the rotating body is embedded and arranged in the second cavity;
The drill bit tail body is axially pushed into the bearing seat and the rotating body in turn and extends out of the shell, the transmission part is arranged on the outer side of the drill bit tail body, and when the reverse driving device of the power head with the guide hole is lifted, the drill bit tail body can be contacted with and drive the bearing seat to rotate together.
Preferably, the inner wall of the first cavity is provided with a rest part, which comprises a first rest part and a second rest part positioned below the first rest part, wherein the first rest part is internally provided with a thrust roller bearing, and the second rest part is internally provided with a deep groove ball bearing.
Preferably, the bearing seat comprises a first bearing part and a second bearing part, the transition part of the first bearing part and the second bearing part is provided with a step, the first bearing part is in running fit with the thrust roller bearing, the second bearing part is in running fit with the deep groove ball bearing, and the deep groove ball bearing and the first shelving part are matched to provide supporting force for the bottom of the thrust roller bearing.
Preferably, the outer wall of the bearing seat is provided with a supporting part for providing supporting force to the bottom of the deep groove ball bearing in cooperation with the second placing part.
Preferably, one end of the drill shank body is connected with a power head, and the other end of the drill shank body is connected with a drill rod in a threaded manner; the drill bit tail body is in transition fit in the rotating body, the drill bit tail body is in floating fit in the bearing seat, and the drill bit tail body can move up and down in the inner shaft of the bearing seat.
Preferably, the transmission part is an annular step arranged on the outer side of the drill shank body.
Preferably, the bottom of the shell is connected with a flange plate in a threaded manner.
(III) beneficial effects
The embodiment of the utility model provides a reverse punching device for a hole guiding power head. The beneficial effects are as follows:
1. Through being provided with drive division on the bore bit body, the bearing frame is assembled in thrust roller bearing and deep groove ball bearing, when the draw hole unit head upwards lifts, and drive division contacts with the bearing frame, and rotatory bore bit body is pressed down on the bearing frame because the gravity effect of drilling rod, and the bore bit body drives the bearing frame and rotates in the casing this moment, is static friction between the two, compares original dynamic friction, can reduce the wearing and tearing degree of the contact surface of two by a wide margin.
2. Through setting up bearing, can reduce original copper sheathing and bore bit shank body fit clearance 0.5mm to 0.01-0.02mm, reduce the shake range of unit head in the operation in-process, be rolling friction between bore bit shank body and the bearing pin simultaneously, when horizontal punching, original copper sheathing design takes place sliding friction with the bore bit shank body, can reduce both wearing and tearing degrees after turning into rolling friction.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a front view and a corresponding semi-sectional schematic view of the structure of the present utility model;
FIG. 3 is a schematic cross-sectional view of a filter device according to the present utility model.
In the figure: 1. a housing; 1.1, a first cavity; 1.1.1, a first rest portion; 1.1.2, a second rest; 1.1.3, thrust roller bearings; 1.1.4, deep groove ball bearings; 1.2, a second cavity; 1.3, an installation part; 2. a bearing seat; 2.1, a first bearing part; 2.2, a second bearing part; 2.3, a supporting part; 2.4, limiting rings; 2.5, a step layer; 3. a rotating body; 4. a drill shank body; 4.1, a transmission part.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, a reverse punching device of a hole-guiding power head comprises a shell 1, wherein a cavity penetrating through the upper end and the lower end of the shell 1 is formed in the shell 1, the cavity is provided with a smooth inner wall and comprises a first cavity 1.1 and a second cavity 1.2, and the first cavity 1.1 is communicated with the second cavity 1.2; the top of the shell 1 extends outwards along the periphery to form a mounting part 1.3, the mounting part 1.3 is hollow and annular, and the inner diameter of the mounting part 1.3 is the same as the inner diameter of the cavity of the shell 1; a plurality of mounting holes are formed in the surface of the mounting part 1.3, and the shell 1 is mounted to the power head device through the cooperation of bolts and the mounting holes.
The flange is connected to the bottom of the shell 1 in a threaded manner, so that the tightness of the bottom of the device is improved, and dust or fine particles are prevented from entering the detachable shell 1 from a gap at the bottom of the shell 1 during drilling.
The inner wall of the first cavity 1.1 is provided with a rest part for mounting a bearing; the novel energy-saving type energy-saving lamp comprises a first shelving part 1.1.1 and a second shelving part 1.1.2, wherein the second shelving part 1.1.2 is positioned below the first shelving part 1.1.1, the first shelving part and the second shelving part are annular steps protruding towards the axis direction of a first cavity 1.1, and the inner diameter of the first shelving part 1.1.1 is larger than that of the second shelving part 1.1.2; the first placing part 1.1.1 is internally provided with a thrust roller bearing 1.1.3 for improving the axial load capacity when the reverse driving device is vertically used, and the second placing part 1.1.2 is internally provided with a deep groove ball bearing 1.1.4 for improving the radial load capacity when the reverse driving device is horizontally used.
The bearing seat 2 is rotationally connected in the first cavity 1.1, a through hole is formed in the bearing seat 2, and the bearing seat 2 is provided with a first bearing part 2.1 and a second bearing part 2.2 which are integrally formed; the transition department of first carrier part 2.1 and second carrier part 2.2 is formed with the differential stage, and bearing frame 2 axially stretches into thrust roller bearing 1.1.3, deep groove ball axle in proper order, and its first carrier part 2.1 and thrust roller bearing 1.1.3 normal running fit, second carrier part 2.2 and deep groove ball bearing 1.1.4 normal running fit for bearing frame 2 can rotate at first cavity 1.1.
The second placing part 1.1.2 is supported at the outer diameter bottom of the deep groove ball bearing 1.1.4, and simultaneously, the outer wall of the bearing seat 2 is provided with a supporting part 2.3 for supporting the inner diameter bottom of the deep groove ball bearing 1.1.4, so that the bearing is prevented from shifting and moving when being subjected to axial load, and the bearing is ensured to be firmly fixed at a correct position;
In some embodiments, the support 2.3 may be an annular support block on which the outer wall of the bearing housing 2 is provided with a protrusion, on which the inner diameter bottom of the deep groove ball bearing 1.1.4 is placed.
In some preferred embodiments, the supporting part 2.3 may be a groove formed on the outer wall of the bearing seat 2, a retainer ring is sleeved in the groove, and the bottom of the inner diameter of the deep groove ball bearing 1.1.4 is placed on the retainer ring.
Similarly, the outer diameter bottom of the thrust roller bearing 1.1.3 is supported by the first resting portion 1.1.1, and the inner diameter bottom thereof is placed on top of the deep groove ball bearing 1.1.4, preventing the thrust roller bearing 1.1.3 from shifting and moving when subjected to axial load by providing support at both the outer diameter bottom and the inner diameter bottom of the thrust roller bearing 1.1.3.
The top outer wall of the bearing pedestal 2 is provided with a limiting ring 2.4, the limiting ring 2.4 is abutted against the top of the thrust roller bearing 1.1.3, and the thrust roller bearing 1.1.3 and the deep groove ball bearing 1.1.4 are further tightly assembled in the first cavity 1.1.
A rotor 3 mounted in the second cavity 1.2; the rotor 3 is needle bearing, and the inner wall of the second cavity 1.2 is also provided with a groove, the groove is sleeved with a retainer ring, so that when the needle bearing is subjected to axial load, upward movement is prevented, the inner wall of the second cavity 1.2 is also provided with an annular bulge, the annular bulge is supported at the bottom of the rotor 3, the rotor 3 is limited in the second cavity 1.2 through the retainer ring and the annular bulge in the second cavity 1.2, and the rotor 3 is prevented from being influenced by external force in the second cavity 1.2 to move.
The drill shank body 4 is axially pushed into the bearing seat 2 and the rotating body 3 in sequence and extends out of the shell 1, one end of the drill shank body 4 is connected with a power head, and the other end of the drill shank body is in threaded connection with a drill rod; the drill shank body 4 is in transition fit in the rotating body 3, the drill shank body 4 is in floating fit in the bearing seat 2, and the drill shank body 4 can move up and down in the axial direction of the bearing seat 2.
The outer side of the drill shank body 4 is provided with a transmission part 4.1, in some embodiments, the transmission part 4.1 can be an annular step at the outer side of the drill shank part, and the transmission part 4.1 can limit the drill shank body 4 assembled with a drill rod (the drill rod is generally 2-10 tons) from being influenced by weight to displace downwards in the shell 1;
In some embodiments, the top of the bearing seat 2 is provided with a convex step layer 2.5 which is matched with the annular step, so that the contact surface of the bearing seat 2 and the annular step is recessed downwards in the friction of the bearing seat 2 and the annular step in daily accumulation, and the displacement stroke of the drill shank body 4 is increased.
When the hole guiding power head drills downwards, the drill rod arranged at one end of the drill shank body 4 is abutted against the drilling surface, and then the hole guiding power head rotates downwards and extrudes the drilling surface, so that the drill shank body 4 is lifted upwards in the shell 1 (the shell 1 is fixed on the mounting surface of the power head device) due to extrusion force, the transmission part 4.1 of the drill shank body 4 and the bearing seat 2 which are contacted with each other are separated from each other in an unactuated state, and the abrasion of the contact surface between the transmission part 4.1 and the bearing seat 2 is reduced;
When the hole-guiding power head is lifted upwards, the drill rod and the drill shank body 4 still keep a rotating state, the transmission part 4.1 of the originally separated drill shank body 4 and the bearing seat 2 are contacted again under the action of gravity and tension, and the rotating drill shank body 4 drives the bearing seat 2 to rotate in the shell 1 through the transmission part 4.1, so that the dynamic friction between the drill shank body 4 and the bearing seat 2 in the original design is converted into static friction, and the loss of the two is reduced.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (7)
1. A pilot power head reverse-driving device, comprising:
The shell (1) is internally provided with cavities penetrating through two ends and comprises a first cavity (1.1) and a second cavity (1.2);
the bearing seat (2) is rotationally connected in the first cavity (1.1);
a rotating body (3) embedded and arranged in the second cavity (1.2);
The drill shank body (4) is axially sequentially pushed into the bearing seat (2) and the rotating body (3) and extends out of the shell (1), the transmission part (4.1) is arranged on the outer side of the drill shank body, and when the reverse punching device of the power head with the lifting hole is lifted, the drill shank body (4) can be contacted and drive the bearing seat (2) to rotate together.
2. The reverse punching device for the hole guiding power head as defined in claim 1, wherein: the inner wall of the first cavity (1.1) is provided with a placing part, the placing part comprises a first placing part (1.1.1) and a second placing part (1.1.2) positioned below the first placing part, the first placing part (1.1.1) is internally provided with a thrust roller bearing (1.1.3), and the second placing part (1.1.2) is internally provided with a deep groove ball bearing (1.1.4).
3. The reverse punching device for the hole guiding power head as defined in claim 2, wherein: the bearing seat (2) comprises a first bearing part (2.1) and a second bearing part (2.2), the transition part of the first bearing part (2.1) and the transition part of the second bearing part are provided with a step difference, the first bearing part (2.1) is in running fit with the thrust roller bearing (1.1.3), the second bearing part (2.2) is in running fit with the deep groove ball bearing (1.1.4), and the deep groove ball bearing (1.1.4) is matched with the first shelving part (1.1.1) to provide supporting force for the bottom of the thrust roller bearing.
4. A pilot power head reverse-driving device as defined in claim 3, wherein: the outer wall of the bearing seat (2) is provided with a supporting part (2.3) for providing supporting force to the bottom of the deep groove ball bearing (1.1.4) in cooperation with the second placing part (1.1.2).
5. The reverse punching device for the hole guiding power head as defined in claim 1, wherein: one end of the drill shank body (4) is connected with a power head, and the other end of the drill shank body is connected with a drill rod in a threaded manner; the drill shank body (4) is in transition fit in the rotating body (3), the drill shank body (4) is in floating fit in the bearing seat (2), and the drill shank body (4) can axially move up and down in the bearing seat (2).
6. The reverse punching device for the hole guiding power head as defined in claim 1, wherein: the transmission part (4.1) is an annular step arranged at the outer side of the drill shank body (4).
7. The reverse punching device for the hole guiding power head as defined in claim 1, wherein: the bottom of the shell (1) is connected with a flange plate in a threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322217902.8U CN220908395U (en) | 2023-08-17 | 2023-08-17 | Reverse punching device for hole guiding power head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322217902.8U CN220908395U (en) | 2023-08-17 | 2023-08-17 | Reverse punching device for hole guiding power head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220908395U true CN220908395U (en) | 2024-05-07 |
Family
ID=90912291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322217902.8U Active CN220908395U (en) | 2023-08-17 | 2023-08-17 | Reverse punching device for hole guiding power head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220908395U (en) |
-
2023
- 2023-08-17 CN CN202322217902.8U patent/CN220908395U/en active Active
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