CN116877672A - Gear shifting type portable core drilling machine power head - Google Patents

Gear shifting type portable core drilling machine power head Download PDF

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Publication number
CN116877672A
CN116877672A CN202310872258.XA CN202310872258A CN116877672A CN 116877672 A CN116877672 A CN 116877672A CN 202310872258 A CN202310872258 A CN 202310872258A CN 116877672 A CN116877672 A CN 116877672A
Authority
CN
China
Prior art keywords
gear
shifting
shaft
box body
gear shifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310872258.XA
Other languages
Chinese (zh)
Inventor
高鹏举
王庆晓
李文秀
伍晓龙
杜垚森
汤小仁
董向宇
王晓赛
赵远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Exploration Technology Chinese Academy of Geological Sciences
Original Assignee
Institute of Exploration Technology Chinese Academy of Geological Sciences
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Exploration Technology Chinese Academy of Geological Sciences filed Critical Institute of Exploration Technology Chinese Academy of Geological Sciences
Priority to CN202310872258.XA priority Critical patent/CN116877672A/en
Publication of CN116877672A publication Critical patent/CN116877672A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/32—Gear shift yokes, e.g. shift forks

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention discloses a gear-shifting type portable core drilling machine power head, which relates to the technical field of geological exploration equipment and comprises a box body, a box cover, an input shaft, a gear-shifting gear, a shifting fork, an output shaft, a plurality of gear gears and a gear-shifting driving mechanism; an input shaft and an output shaft are arranged in the box body; the gear shifting gears are arranged on the input shaft, and the gear shifting gears are arranged on the output shaft; the circumference of gear that shifts is provided with the groove of shifting, and the actuating mechanism that shifts sets up on the box, and shift fork one end is connected with the actuating mechanism that shifts, and the shift fork other end stretches into the inslot of shifting. The gear shifting mechanism is arranged in the gear box; no special case is required; the occupied volume is small; the transportation and the installation are convenient; the gear shifting mechanism adopts a lever structure; the labor is saved and the operation is easy; the gear shifting is convenient; the problem that a power head of a portable drilling machine is frequently replaced in drilling construction is solved; the labor intensity is reduced; avoiding accidental personal injury. The influence on a connecting piece between the motor and the reduction gearbox is reduced; the service life is prolonged; saving auxiliary time.

Description

Gear shifting type portable core drilling machine power head
Technical Field
The invention relates to the technical field of geological exploration equipment, in particular to a gear shifting type portable core drilling machine power head.
Background
Drilling is a direct means of obtaining physical data such as underground cores. Rotary drilling has evolved from percussive drilling to rotary drilling as drilling methods have evolved from drilling methods. Core drilling rigs have also evolved from wireline percussion devices to gyrator type rotary drilling devices.
Many mountainous areas, hills and other areas with complex terrains are difficult to enter, and conventional drilling equipment is heavy and inconvenient to detach; meanwhile, the problems of narrow construction sites, high production cost and the like are solved. The portable core drilling machine has the characteristics of modularization, light weight, miniaturization, hydraulic driving and the like; can solve the drilling and construction problem in the difficult-to-access area.
The power head is used as a core component of the rotary drilling equipment; the rotating speed and the torque required by drilling are provided; transmitting the weight on bit required for drilling and the lifting force required for lifting the drill. The carrying capacity and stability of the power head directly influence the working performance of the drilling machine. The power head of the conventional rotary drilling equipment adopts a motor and gear shifting type reduction gearbox mode; according to different drilling conditions; adjusting the gear of the reduction gearbox; realizing high-low speed adjustment. The gear shifting mechanism needs to be installed in a special box body; the shape is complex; occupying space; the operation on site is inconvenient.
The patent with publication number CN101392629A discloses a portable full-hydraulic core drilling machine, the basic type is a power head type multifunctional full-hydraulic core drilling machine with hydraulic drive, control and long-stroke cylinder feeding, which comprises: the hydraulic system comprises an electric control cabinet, three hydraulic oil pumps (20), a hydraulic control valve (23), a hydraulic oil tank and cooler (22), a hydraulic motor (1), a power head (2), a water joint (3), a column (5), a guide frame (4), supporting legs, two lifting oil cylinders (16), a crown block (7), a hydraulic clamp holder (18), a hydraulic rope coring winch (27) and other components; the whole machine adopts planar layout, is in modularized design, is convenient to assemble and disassemble, has light weight of parts, is convenient to move, and is particularly suitable for mountain areas or mine tunnels to drill.
The portable core drilling machine adopts a mode of a plurality of motors (most 3) +reduction boxes; during the construction process; the rotation speed is adjusted by replacing the high-speed motor and the low-speed motor. The field drilling environment is crude; the matched hoisting arrangement is absent; the replacement of the motor needs to be completed manually; the labor intensity is high; accidental personal injury is easy to occur. The motor is replaced frequently at the same time; the connecting mechanism between the motor and the reduction gearbox is easy to damage; affecting the operational stability of the power head.
Disclosure of Invention
In order to solve the technical problems, the invention provides a gear shifting type portable core drilling machine power head, wherein a gear shifting mechanism is arranged in a reduction gearbox; only the gear shift lever is required to be lifted and pressed during gear shifting; the rotation speed adjustment is ensured; and the portability and the attractive appearance are considered. The manual replacement of the motor is omitted. The power head has a simple structure; the operation is simple and convenient; the work is safe, stable and reliable; the labor intensity is low; short auxiliary time and the like.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a gear-shifting type portable core drilling machine power head which comprises a box body, a box cover, an input shaft, a gear shifting gear, a shifting fork, an output shaft, a plurality of gear gears and a gear shifting driving mechanism, wherein the box body is provided with a gear shifting mechanism; the box cover is arranged on one side of the box body; the input shaft and the output shaft are arranged in parallel in the box body; the gear shifting gears are arranged on the input shaft, and the gear gears are arranged on the output shaft; a gear shifting groove is formed in the circumference of the gear shifting gear, the gear shifting driving mechanism is arranged on the box body, one end of the shifting fork is connected with the gear shifting driving mechanism, and the other end of the shifting fork stretches into the gear shifting groove; the gear shifting gears comprise a plurality of driving gears which are coaxially arranged and fixedly connected, and the gear gears are respectively matched with one driving gear.
Optionally, the gear shifting driving mechanism comprises a handle shaft, a gear shifting shaft, a handle seat and a long shaft sleeve; the long shaft sleeve is arranged in the box body, the gear shifting shaft is arranged in the long shaft sleeve, the middle part of the handle shaft is rotationally connected with the top end of the gear shifting shaft, the handle seat is arranged outside the box body, and the other end of the handle shaft is rotationally connected with the handle seat; the handle shaft is connected with one end of the shifting fork.
Optionally, the gear shift shaft includes axle and shifting block, the axle set up in the major axis cover, be provided with the through groove on the major axis cover lateral wall, the one end of shifting block with the axle is connected, the other end of shifting block through the fourth bolt with the one end of shift fork is connected.
Optionally, the gear shifting driving mechanism further comprises a positioning assembly, wherein the positioning assembly comprises a ball seat, a steel ball, a spring, a stud and a nut; the ball seat is arranged on one side of the long shaft sleeve, a plurality of grooves are formed in the handle shaft, and the positions of the grooves are matched with gears with different gears on the gear shifting gear; the steel ball set up in the ball seat orientation the one end of handle axle, the ball seat other end is provided with the nut, the double-screw bolt with the nut passes through threaded fit, just the one end of double-screw bolt stretches into in the ball seat, the one end of double-screw bolt with be provided with between the steel ball the spring.
Optionally, one end of the long shaft sleeve is connected with the box body through a pin, and a second end cover is arranged on the outer wall of the box body at the other end of the long shaft sleeve.
Optionally, a rotating joint is arranged at the top of the gear shifting shaft, and the rotating joint is rotationally connected with the top of the gear shifting shaft through a first pin; the handle shaft penetrates through the rotary joint.
Optionally, one end of the handle shaft is provided with a handle head, the other end of the handle shaft is provided with a rotating head, and the rotating head is rotationally connected with the handle seat through a second pin.
Optionally, an input shaft shoulder is arranged at the lower part of the input shaft, a first bearing is arranged below the input shaft shoulder, a first end cover is arranged on the outer wall of the box body below the first bearing, and the first end cover is connected with the box body through a third bolt; a second bearing is arranged between the upper part of the input shaft and the box body, and a first check ring and a second check ring are respectively arranged above and below the second bearing on the input shaft.
Optionally, an output shaft shoulder is arranged at the lower part of the output shaft, and a thrust ball bearing, a second bearing, a deep groove ball bearing and a lower end cover are sequentially arranged below the output shaft shoulder; the lower end cover is connected with the box body through a second bolt; the gear gears, the thrust ball bearings, the first bearing seats, the deep groove ball bearings and the upper end covers are sequentially arranged above the shaft shoulders of the output shaft; the upper end cover is connected with the box body through a first bolt.
Optionally, the box body is connected with the box cover through a fifth bolt.
Compared with the prior art, the invention has the following technical effects:
(1) The gear shifting mechanism is arranged in the gear box; no special case is required; the occupied volume is small; the transportation and the installation are convenient;
(2) The gear shifting mechanism adopts a lever structure; the labor is saved and the operation is easy; the gear shifting is convenient;
(3) Under the action of spring force, the steel balls are positioned at the grooves on the gear shifting shaft, so that the gear disengagement or gear disorder is avoided;
(4) The gear shifting power head solves the problem that the power head of the portable drilling machine is frequently replaced in drilling construction; the labor intensity is greatly reduced; avoiding accidental personal injury. The influence on a connecting piece between the motor and the reduction gearbox is reduced; the service life is prolonged; saving auxiliary time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a power head of a portable core drilling machine with gear shifting according to the present invention;
fig. 2 is a schematic A-A sectional structure of a power head of a gear shifting type portable core drilling machine.
Reference numerals illustrate: 1. a first bolt; 2. an upper end cap; 3. a first deep groove ball bearing; 4. a first bearing seat; 5. a first thrust ball bearing; 6. a gear II; 7. III gear; 8. a case; 9. a sleeve; 10. a gear I; 11. a second thrust ball bearing; 12. a second bearing seat; 13. a second deep groove ball bearing; 14. a lower end cap; 15. a second bolt; 16. an output shaft; 17. a first end cap; 18. a first bearing; 19. a third bolt; 20. an input shaft; 21. a pin; 22. a fourth bolt; 23. a shift shaft; 23-1, a shifting block; 23-2, shaft; 24. a shifting fork; 25. a long shaft sleeve; 26. a shift gear; 27. a second end cap; 28. a handle head; 29. a handle shaft; 30. a first pin; 31. a rotary joint; 32. a handle base; 33. a rotating head; 34. a second pin; 35. a first retainer ring; 36. a second bearing; 37. the second check ring; 38. a case cover; 39. a ball seat; 40. a steel ball; 41. a spring; 42. a stud; 43. a nut; 44. and a fifth bolt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, the present embodiment provides a gear shifting portable core drilling machine power head, which comprises a box body 8, a box cover 38, an input shaft 20, a gear shifting gear 26, a shifting fork 24, an output shaft 16, a plurality of gear gears and a gear shifting driving mechanism; a box cover 38 is arranged on one side of the box body 8; an input shaft 20 and an output shaft 16 are arranged in parallel in the box body 8; a shift gear 26 is provided on the input shaft 20, and a plurality of gear gears are provided on the output shaft 16; a gear shifting groove is formed in the circumference of the gear shifting gear 26, a gear shifting driving mechanism is arranged on the box body 8, one end of a shifting fork 24 is connected with the gear shifting driving mechanism, and the other end of the shifting fork 24 stretches into the gear shifting groove; the shift gear 26 includes a plurality of driving gears disposed coaxially 23-2 and fixedly connected, and a plurality of gear gears are respectively matched with one driving gear.
The shift fork 24 is driven by the shift driving mechanism, so that the position of the shift gear 26 on the input shaft 20 is changed, the gears on the shift gear 26 are meshed with different gear positions, and the speed change of the output shaft 16 is realized.
In the embodiment, the output shaft 16 is provided with a gear 6, a gear 7 and a gear 10, the gear 6, the gear 7 and the gear 10 are connected with the output shaft 16 through splines, and a sleeve 9 is arranged between the gear 7 and the gear 10. The gear shifting gear 26 includes three gears integrally provided, the gear shifting gear 26 is in spline connection with the input shaft 20, three gears in the gear shifting gear 26 are respectively engaged with the gear 6 of the second gear, the gear 7 of the third gear and the gear 10 of the first gear, and when the gear shifting gear 26 is moved to a specific position by driving the shifting fork 24 through the gear shifting driving mechanism, one gear in the gear shifting gear 26 is engaged with the gear 6 of the second gear, the gear 7 of the third gear or the gear 10 of the first gear, so that the speed change of the output shaft 16 is realized.
The gear shifting driving mechanism comprises a handle shaft 29, a gear shifting shaft 23, a handle seat 32 and a long shaft sleeve 25; the long shaft sleeve 25 is arranged in the box body 8, the gear shifting shaft 23 is arranged in the long shaft sleeve 25, the middle part of the handle shaft 29 is rotationally connected with the top end of the gear shifting shaft 23, the handle seat 32 is arranged outside the box body 8, and the other end of the handle shaft 29 is rotationally connected with the handle seat 32; the handle shaft 29 is connected to one end of the fork 24.
The gear shifting shaft 23 comprises a shaft 23-2 and a shifting block 23-1, the shaft 23-2 is arranged in a long shaft sleeve 25, a through groove is formed in the side wall of the long shaft sleeve 25, one end of the shifting block 23-1 is connected with the shaft 23-2, and the other end of the shifting block 23-1 is connected with one end of a shifting fork 24 through a fourth bolt 22.
The gear shifting driving mechanism further comprises a positioning assembly, wherein the positioning assembly comprises a ball seat 39, a steel ball 40, a spring 41, a stud 42 and a nut 43; the ball seat 39 is arranged on one side of the long shaft sleeve 25, three grooves are formed in the handle shaft 29, and the positions of the grooves are matched with gears with different gears on the gear shifting gear 26; the steel ball 40 is arranged at one end of the ball seat 39 facing the handle shaft 29, a nut 43 is arranged at the other end of the ball seat 39, the stud 42 is in threaded fit with the nut 43, one end of the stud 42 extends into the ball seat 39, and a spring 41 is arranged between one end of the stud 42 and the steel ball 40. The gear shifting shaft 23 is moved downwards or upwards by pressing or lifting the handle shaft 29, one gear of the gear shifting gears 26 is meshed with the gear II 6, the gear III 7 or the gear I10, meanwhile, the steel balls enter a groove under the pressure of the spring 41, and the steel balls can be pressed in the groove by utilizing the elasticity of the spring 41, so that the gear shifting shaft 23 is positioned, and the gear shifting or gear disorder is prevented. When the gear is required to be shifted again; the shift shaft 23 moves to enable the steel balls to be separated from the grooves; when the shift shaft 23 is moved to a new gear position; the steel balls are pressed on the corresponding grooves.
One end of the long shaft sleeve 25 is connected with the box body 8 through a pin 21, and a second end cover 27 is arranged on the outer wall of the box body 8 at the other end of the long shaft sleeve 25.
The top of the gear shifting shaft 23 is provided with a rotary joint 31, and the rotary joint 31 is rotationally connected with the top of the gear shifting shaft 23 through a first pin 30; the handle shaft 29 penetrates the swivel joint 31.
The handle shaft 29 is provided with a handle head 28 at one end and a swivel head 33 at the other end of the handle shaft 29, the swivel head 33 being rotatably connected to the handle base 32 via a second pin 34.
The lower part of the input shaft 20 is provided with an input shaft shoulder, a first bearing 18 is arranged below the input shaft shoulder, a first end cover 17 is arranged on the outer wall of the box body 8 below the first bearing 18, and the first end cover 17 is connected with the box body 8 through a third bolt 19; a second bearing 36 is provided between the upper part of the input shaft 20 and the housing 8, and a first check ring 35 and a second check ring 37 are provided on the input shaft 20 above and below the second bearing 36, respectively.
The lower part of the output shaft 16 is provided with an output shaft shoulder, and a second thrust ball bearing 11, a second bearing seat 12, a second deep groove ball bearing 13 and a lower end cover 14 are sequentially arranged below the output shaft shoulder; the lower end cover 14 is connected with the box body 8 through a second bolt 15; a plurality of gear gears, a first thrust ball bearing 5, a first bearing seat 4, a first deep groove ball bearing 3 and an upper end cover 2 are sequentially arranged above the shaft shoulder of the output shaft; the upper end cover 2 is connected with the box body 8 through a first bolt 1.
The case 8 and the case cover 38 are connected by a fifth bolt 44.
When shifting gears, the power head stops working first; lifting or pressing the handle shaft 29 according to the desired gear; the swivel joint 31 slides on the handle shaft 29; the gear shifting shaft 23 is driven to slide in the inner hole of the long shaft sleeve 25.
A movable fork 24 connected to the shift shaft 23 drives a shift gear 26 to slide on the spline of the input shaft 20. The shift shaft 23 slides while being slid; the steel ball is pressed against the shift shaft 23 by the elastic force of the spring 41. The gear shifting shaft 23 is provided with three grooves; the shift gears 26 are moved to positions corresponding to the shift shafts 23 when engaged with the gears on the input shaft 20, respectively; the groove corresponding to the gear just moves to the steel ball; under the elastic force of the spring 41; ensuring that no gear disengagement or gear disorder occurs.
When the gear is required to be shifted again; the shift shaft 23 moves to enable the steel balls to be separated from the grooves; when the shift shaft 23 is moved to a new gear position; the steel balls are pressed on the corresponding grooves.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims (10)

1. The power head of the gear shifting type portable core drilling machine is characterized by comprising a box body, a box cover, an input shaft, a gear shifting gear, a shifting fork, an output shaft, a plurality of gear gears and a gear shifting driving mechanism; the box cover is arranged on one side of the box body; the input shaft and the output shaft are arranged in parallel in the box body; the gear shifting gears are arranged on the input shaft, and the gear gears are arranged on the output shaft; a gear shifting groove is formed in the circumference of the gear shifting gear, the gear shifting driving mechanism is arranged on the box body, one end of the shifting fork is connected with the gear shifting driving mechanism, and the other end of the shifting fork stretches into the gear shifting groove; the gear shifting gears comprise a plurality of driving gears which are coaxially arranged and fixedly connected, and the gear gears are respectively matched with one driving gear.
2. The shift portable core drill power head as recited in claim 1, wherein the shift drive mechanism comprises a handle shaft, a shift shaft, a handle seat, and a long shaft sleeve; the long shaft sleeve is arranged in the box body, the gear shifting shaft is arranged in the long shaft sleeve, the middle part of the handle shaft is rotationally connected with the top end of the gear shifting shaft, the handle seat is arranged outside the box body, and the other end of the handle shaft is rotationally connected with the handle seat; the handle shaft is connected with one end of the shifting fork.
3. The gear-shifting portable core drilling machine power head according to claim 2, wherein the gear-shifting shaft comprises a shaft and a shifting block, the shaft is arranged in the long shaft sleeve, a through groove is formed in the side wall of the long shaft sleeve, one end of the shifting block is connected with the shaft, and the other end of the shifting block is connected with one end of the shifting fork through a fourth bolt.
4. The shifted portable core drill power head as recited in claim 2, wherein the shift drive mechanism further comprises a positioning assembly comprising a ball seat, a steel ball, a spring, a stud, and a nut; the ball seat is arranged on one side of the long shaft sleeve, a plurality of grooves are formed in the handle shaft, and the positions of the grooves are matched with gears with different gears on the gear shifting gear; the steel ball set up in the ball seat orientation the one end of handle axle, the ball seat other end is provided with the nut, the double-screw bolt with the nut passes through threaded fit, just the one end of double-screw bolt stretches into in the ball seat, the one end of double-screw bolt with be provided with between the steel ball the spring.
5. The gear shifting portable core drilling machine power head according to claim 2, wherein one end of the long shaft sleeve is connected with the box body through a pin, and a second end cover is arranged on the outer wall of the box body at the other end of the long shaft sleeve.
6. The gear-shifting portable core drilling machine power head according to claim 2, wherein a rotary joint is arranged at the top of the gear-shifting shaft, and the rotary joint is rotationally connected with the top of the gear-shifting shaft through a first pin; the handle shaft penetrates through the rotary joint.
7. The gear-shifting portable core drilling machine power head according to claim 2, wherein one end of the handle shaft is provided with a handle head, the other end of the handle shaft is provided with a rotating head, and the rotating head is rotatably connected with the handle seat through a second pin.
8. The gear shifting portable core drilling machine power head according to claim 1, wherein an input shaft shoulder is arranged at the lower part of the input shaft, a first bearing is arranged below the input shaft shoulder, a first end cover is arranged on the outer wall of the box body below the first bearing, and the first end cover is connected with the box body through a third bolt; a second bearing is arranged between the upper part of the input shaft and the box body, and a first check ring and a second check ring are respectively arranged above and below the second bearing on the input shaft.
9. The gear shifting type portable core drilling machine power head according to claim 1, wherein an output shaft shoulder is arranged at the lower part of the output shaft, and a thrust ball bearing, a second bearing seat, a deep groove ball bearing and a lower end cover are sequentially arranged below the output shaft shoulder; the lower end cover is connected with the box body through a second bolt; the gear gears, the thrust ball bearings, the first bearing seats, the deep groove ball bearings and the upper end covers are sequentially arranged above the shaft shoulders of the output shaft; the upper end cover is connected with the box body through a first bolt.
10. The shifted portable core drill power head as recited in claim 1, wherein the housing is connected to the cover by a fifth bolt.
CN202310872258.XA 2023-07-17 2023-07-17 Gear shifting type portable core drilling machine power head Pending CN116877672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310872258.XA CN116877672A (en) 2023-07-17 2023-07-17 Gear shifting type portable core drilling machine power head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310872258.XA CN116877672A (en) 2023-07-17 2023-07-17 Gear shifting type portable core drilling machine power head

Publications (1)

Publication Number Publication Date
CN116877672A true CN116877672A (en) 2023-10-13

Family

ID=88260018

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310872258.XA Pending CN116877672A (en) 2023-07-17 2023-07-17 Gear shifting type portable core drilling machine power head

Country Status (1)

Country Link
CN (1) CN116877672A (en)

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