CN110607816A - Mechanical arm of earth boring machine - Google Patents
Mechanical arm of earth boring machine Download PDFInfo
- Publication number
- CN110607816A CN110607816A CN201910765174.XA CN201910765174A CN110607816A CN 110607816 A CN110607816 A CN 110607816A CN 201910765174 A CN201910765174 A CN 201910765174A CN 110607816 A CN110607816 A CN 110607816A
- Authority
- CN
- China
- Prior art keywords
- lead screw
- drill bit
- boring machine
- earth boring
- plate
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000003028 elevating effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/16—Machines for digging other holes in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/16—Machines for digging other holes in the soil
- E02F5/20—Machines for digging other holes in the soil for vertical holes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention aims to provide a mechanical arm of a hole digger, which comprises a lifting device and a variable-diameter drill bit device arranged on the lifting device, and is characterized in that the variable-diameter drill bit device comprises: the variable-diameter drill bit comprises an inverted U-shaped fixing plate, a second lead screw in transmission connection with the inverted U-shaped fixing plate, a fixed mounting seat in transmission connection with the second lead screw, an expanding push rod fixedly arranged at the bottom of the fixed mounting seat and a spiral drill bit fixedly connected with the expanding push rod. The invention can solve the problems that the existing hole digger for digging holes on the tower pole of the power grid can not change the diameter, the drill bits with different diameters are required to be arranged in different hole diameters, and the digging efficiency is low.
Description
Technical Field
The invention belongs to the technical field of earth boring machines, and particularly relates to an earth boring machine mechanical arm, belonging to the field of electric power machinery.
Background
When the existing power supply line telegraph pole is used for erecting, construction is generally carried out manually or by matching a crane with manual work, the labor intensity is high, the pit digging cost is high, and then the problems are solved by the aid of a pit digging machine.
However, the mechanical arm of the earth boring machine for the power grid tower pole in the prior art adopts helical blades, and the earth boring machine mechanical arm has the following defects: the diameter of the hole can not be changed, the drill bits with different diameters are required to be arranged in different hole diameters, and the soil discharging rate is low.
Disclosure of Invention
The present invention is directed to a variable diameter drill bit to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a hole digger arm, includes elevating gear and installs but variable diameter drill bit device on elevating gear, its characterized in that but variable diameter drill bit device includes: the variable-diameter drill bit comprises an inverted U-shaped fixing plate, a second lead screw in transmission connection with the inverted U-shaped fixing plate, a fixed mounting seat in transmission connection with the second lead screw, an expanding push rod fixedly arranged at the bottom of the fixed mounting seat and a spiral drill bit fixedly connected with the expanding push rod.
Preferably, a handle fixedly connected with the input end of the second screw rod is arranged on the outer side surface of the inverted U-shaped fixing plate.
Preferably, one end of the second screw rod, which is far away from the center of the disc, is provided with a first slot.
Preferably, a fixing device is arranged on the circumferential direction of the disc corresponding to the position of the inverted U-shaped fixing plate, and the fixing device is used for fixing the two screw rods.
Preferably, the fixing device comprises a fixing arm and a fixing shaft, a second slot is formed in the position, corresponding to the first slot, of the fixing arm, and the fixing arm can be inserted into the first slot and the second slot to fix the second lead screw.
Preferably, a second sliding block is formed on one side, close to the U-shaped fixing plate, of the fixing mounting seat, and a second sliding chute in sliding connection with the second sliding block is formed in the U-shaped fixing plate.
Preferably, the lifting device comprises a v-21274and a v-21274, the v-21274is connected with a first screw rod through a first screw rod bearing and a second screw rod bearing in a transmission manner, the first screw rod is connected with a fixed seat with a lifting plate in a transmission manner, and the lifting plate is fixedly arranged on the fixed seat.
Preferably, a first sliding block is formed on one side of the fixed seat, which is far away from the lifting plate, and the v-shaped 21274is provided with a first sliding groove in sliding connection with the first sliding block.
Preferably, the top of the v-21274-shaped fixing plate is fixedly provided with a first motor and a speed reducer, an input shaft of the first screw rod is in transmission connection with an output shaft of the speed reducer, and an input shaft of the speed reducer is in transmission connection with an output shaft of the first motor through a coupler.
Preferably, the top of lifter plate is provided with the second motor, the output shaft of second motor passes through shaft coupling and runs through in the pivot fixed connection of lifter plate, the tip of pivot output with the disc is fixed spiro union.
Preferably, the number of the variable-diameter drill bits is 3 or 4.
The invention has the following beneficial effects:
the variable-diameter drill bit drives the second screw rod to rotate through the rotating handle, so that the movement of the fixed mounting seat in the horizontal direction is controlled, the diameter-expanding push rod and the spiral drill bit are driven to horizontally move, and the diameter of the whole variable-diameter drill bit is changed;
the invention adopts the cooperation of a plurality of spiral drill bits, thereby enhancing the digging effect and enhancing the unearthing efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a robot arm of a earth boring machine of the present invention;
FIG. 2 is a schematic structural diagram of the variable diameter drill bit apparatus of the present invention;
fig. 3 is a schematic structural view of a U-shaped fixing plate according to the present invention.
In the figure: 1. \ 21274and a shaped fixing plate; 2. a second lead screw; 3. a lifting plate; 4. a fixed seat; 5. a speed reducer; 6. a first motor; 7. a motor support frame; 8. a motor; 9. a rotating shaft; 10. a disc; 11. a variable diameter pit digging device; 12. a U-shaped fixing plate; 13. a first lead screw; 14. fixing the mounting seat; 15. expanding the push rod; 16. a helical drill bit; 17. a handle; 18. a first slider; 19. a second slider; 20. installing a fixed panel; 21. a first screw bearing; 22. a second screw bearing; 23. a first slot; 24. a fixed arm; 25. a second slot; 26. a fixed shaft; 27. and (4) a fixing device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a mechanical arm of a hole digger shown in figures 1-3, which consists of a lifting device and a variable-diameter drill bit device.
The lifting device comprises a v-21274, a shaped fixing plate 1, wherein the v-21274is connected to a first lead screw 2 through a first lead screw bearing 21 and a second lead screw bearing 22 in a transmission manner, the first lead screw 2 is connected to a fixing seat 4 with a lifting plate 3 through a lead screw nut in a transmission manner, and the lifting plate 3 is fixedly arranged on the fixing seat 4. A first sliding block 18 is formed on the side of the fixed seat 4 away from the lifting plate 3, and the v-21274is provided with a first sliding groove (not shown) connected with the first sliding block 18 in a sliding manner on the fixing plate 1, so as to increase the stability and strength of the up-and-down movement of the fixed seat 4. The input shaft of the first screw rod 2 is in transmission connection with the output shaft of a speed reducer 5 through a gear box (not shown in the figure), the input shaft of the speed reducer 5 is in transmission connection with the output shaft of a first motor 6 through a coupler (not shown in the figure), the speed reducer 5 and the first motor 6 are both arranged on a motor support frame 7 at the top of the V-shaped fixing plate 1, and the first motor 6 is a servo motor.
The variable diameter drill bit device includes: the drilling tool comprises a disc 10, wherein at least one variable-diameter drill 11 is fixedly arranged at the bottom of the disc 10, and 4 variable-diameter drills 11 are annularly and equidistantly arranged at the bottom of the disc 10.
Each variable-diameter drill bit 11 comprises an inverted U-shaped fixing plate 12, a second screw rod 13 in transmission connection with the inverted U-shaped fixing plate 12, a fixed mounting seat 14 in transmission connection with the second screw rod 13 through a screw nut, an expanding push rod 15 fixedly arranged at the bottom of the fixed mounting seat 14 and a spiral drill bit 16 fixedly connected with the expanding push rod 15, a handle 17 fixedly connected with the input end of the second screw rod 13 is arranged on the outer side surface of the inverted U-shaped fixing plate 12, and a first slot 21 is formed in one end, far away from the center of the disc 10, of the second screw rod 13.
The disc 10 is provided with 4 fixing devices 27 at positions corresponding to the positions of the inverted U-shaped fixing plate 12 in the circumferential direction, and the fixing devices 27 are used for fixing the two lead screws 13. Fixing device 27 includes fixed arm 24 and fixed axle 26, fixed arm 24 is provided with second slot 25 for first slot 21 position, will fixed axle 26 along first slot 21 and second slot 25 insert, realize fixing of fixing device 27 to second lead screw 13 to increase the stability of variable diameter drill bit 11 operation, guarantee that handle 17 is not become flexible in the operation of digging a pit, second lead screw 13 does not rotate.
A second sliding block 19 is formed on one side of the fixed mounting seat 14, which is close to the U-shaped fixed plate 12, and a second sliding chute which is slidably connected with the second sliding block 19 is formed on the U-shaped fixed plate 12, so as to increase the stability and strength of the horizontal movement of the fixed mounting seat 14.
The 21274; the mounting and fixing panel 20 is arranged on the shaped fixing plate 1 and is used for fixedly mounting the Contraband type fixing plate 1 on the earth boring machine.
The top of lifter plate 3 is provided with second motor 8, the output shaft of second motor 8 passes through shaft coupling (not shown in the figure) and runs through in lifter plate 3's pivot 9 fixed connection, the tip and the fixed spiro union of disc 10 of pivot 9 output.
When the device is used, the lifting device is powered by the first motor 6, is in transmission output with an output shaft of the speed reducer 5 through a gear box (not shown in the figure), and drives the fixed seat 4 and the lifting plate 3 to move in the vertical direction through the transmission of the first screw rod 2, so that the variable-diameter drill bit device consisting of the disc 10 and the variable-diameter drill bit 11 is driven to move up and down, and the spiral drill bit 16 moves up and down.
The diameter-variable drill bit device is driven by the second motor 8 to rotate the rotating shaft 9 to realize the rotation of the disc 10 and realize the power output of the diameter-variable drill bit 11.
When the radius of the variable diameter drill bit 11 needs to be adjusted, the fixing shaft 26 is drawn out from the first slot 21 and the second slot 25, and the limitation of the fixing device 27 on the second screw rod 13 is released. The variable-diameter drill bit 11 drives the second screw rod 13 to rotate through the rotating handle 17, so that the movement of the fixed mounting seat 14 in the horizontal direction is controlled, the diameter-expanding push rod 15 and the spiral drill bit 16 are driven to horizontally move, the diameter of the whole variable-diameter drill bit 11 is changed, and the problems that the existing hole digger for digging holes on the tower pole of the power grid cannot be changed in diameter and different hole diameters are provided with drill bits with different diameters can be solved.
When the radius of the variable diameter drill bit 11 is adjusted, the fixing shaft 26 is inserted into the first slot 21 and the second slot 25, so that the fixing device 27 fixes the second screw rod 13, the operation stability of the variable diameter drill bit 11 is improved, the handle 17 is not loosened during pit digging operation, and the second screw rod 13 is not rotated.
The invention adopts the cooperation of a plurality of spiral drill bits 16, enhances the digging effect, enhances the unearthing efficiency and solves the problem of low unearthing rate of the traditional drill bit.
In addition, the variable-diameter drill bit and the variable-diameter drill bit device provided by the embodiment of the invention are described in detail, the principle and the embodiment of the invention are explained by applying specific examples, and the description of the above embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a hole digger arm, includes elevating gear and installs but variable diameter drill bit device on elevating gear, its characterized in that but variable diameter drill bit device includes: the variable-diameter drill bit comprises an inverted U-shaped fixing plate, a second lead screw in transmission connection with the inverted U-shaped fixing plate, a fixed mounting seat in transmission connection with the second lead screw, an expanding push rod fixedly arranged at the bottom of the fixed mounting seat and a spiral drill bit fixedly connected with the expanding push rod.
2. The earth boring machine arm of claim 1, wherein a handle is fixedly attached to an input end of the second lead screw on an outer side of the inverted U-shaped securing plate.
3. The earth boring machine arm of claim 1, wherein an end of said second lead screw remote from a center of said disk is provided with a first slot.
4. The earth boring machine arm of claim 3 wherein said disk is provided with securing means circumferentially located relative to said inverted U-shaped securing plate for securing said two lead screws.
5. The mechanical arm of the earth boring machine as claimed in claim 4, wherein said fixing device comprises a fixing arm and a fixing shaft, said fixing arm is provided with a second slot corresponding to said first slot, said fixing arm can be inserted into said first slot and said second slot to fix said second lead screw.
6. The mechanical arm of the earth boring machine of claim 1, wherein a second slide block is formed on the side of the fixed mounting seat adjacent to the U-shaped fixed plate, and a second sliding slot connected with the second slide block is formed on the U-shaped fixed plate in a sliding manner.
7. The mechanical arm of the earth boring machine as claimed in claim 1, wherein the lifting device comprises a v-21274h-shaped fixing plate, the v-21274h-shaped fixing plate is in transmission connection with a first lead screw through a first lead screw bearing and a second lead screw bearing, the first lead screw is in transmission connection with a fixed seat with a lifting plate, and the lifting plate is fixedly arranged on the fixed seat.
8. The mechanical arm of the earth boring machine as claimed in claim 7, wherein a first slide block is formed on the side of the fixing base away from the lifting plate, and a first sliding groove connected with the first slide block in a sliding manner is formed on the v-shaped fixing plate.
9. The mechanical arm of the earth boring machine as claimed in claim 8, wherein a first motor and a speed reducer are fixedly mounted on the top of the v-shaped fixing plate, an input shaft of the first screw rod is in transmission connection with an output shaft of the speed reducer, and an input shaft of the speed reducer is in transmission connection with an output shaft of the first motor through a coupling.
10. The mechanical arm of the earth boring machine as claimed in claim 8, wherein a second motor is provided on the top of the lifting plate, an output shaft of the second motor is fixedly connected with a rotating shaft penetrating the lifting plate through a coupling, and an end of an output end of the rotating shaft is fixedly screwed with the disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765174.XA CN110607816A (en) | 2019-08-19 | 2019-08-19 | Mechanical arm of earth boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765174.XA CN110607816A (en) | 2019-08-19 | 2019-08-19 | Mechanical arm of earth boring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110607816A true CN110607816A (en) | 2019-12-24 |
Family
ID=68889897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910765174.XA Pending CN110607816A (en) | 2019-08-19 | 2019-08-19 | Mechanical arm of earth boring machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110607816A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110607990A (en) * | 2019-08-19 | 2019-12-24 | 广西电网有限责任公司贵港供电局 | Variable-diameter drill bit and variable-diameter drill bit device |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130140979A (en) * | 2012-06-15 | 2013-12-26 | (주)하이탑 | Excavation hammer apparatus with assembling and separating type of extendable bit |
| CN106869797A (en) * | 2017-03-30 | 2017-06-20 | 中国五冶集团有限公司 | A kind of expanding method of the broaching equipment on construction site |
| CN107046868A (en) * | 2017-04-25 | 2017-08-18 | 嘉兴景园园林建设有限公司 | A kind of pit-picker |
| CN107182372A (en) * | 2017-06-27 | 2017-09-22 | 陈德忠 | A kind of planting tree pit-picker |
| CN107333493A (en) * | 2017-09-12 | 2017-11-10 | 盐城市隆祥机械制造厂 | A kind of agriculture sapling pit-picker with fixing device |
| CN207995661U (en) * | 2018-03-29 | 2018-10-23 | 穆可卿 | Agriculture digging apparatus that is a kind of convenient and stablizing |
| CN108702895A (en) * | 2018-05-03 | 2018-10-26 | 魏焰 | A kind of adjustable digging apparatus of forestry |
| CN109005764A (en) * | 2018-10-11 | 2018-12-18 | 柳州市长林苗木种植专业合作社 | A kind of seedling growth pit-picker |
| CN208291610U (en) * | 2018-04-24 | 2018-12-28 | 惠州市芊华实业有限公司 | One production of soap packing hoisting mechanism |
| CN109307128A (en) * | 2018-11-12 | 2019-02-05 | 梁茵茵 | It is a kind of to watch height-adjustable domestic TV |
| CN208691711U (en) * | 2018-08-10 | 2019-04-05 | 湖北润景园林绿化股份有限公司 | A kind of pit-picker |
| CN208895620U (en) * | 2018-08-22 | 2019-05-24 | 福建跃升机械有限公司 | A kind of pin shaft locating machining clamp |
| CN209061995U (en) * | 2018-11-13 | 2019-07-05 | 惠东县达坤科技有限公司 | Pneumatic press is used in shock-proof front-fork assembly production |
| CN211200523U (en) * | 2019-08-19 | 2020-08-07 | 广西电网有限责任公司贵港供电局 | Mechanical arm of earth boring machine |
-
2019
- 2019-08-19 CN CN201910765174.XA patent/CN110607816A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130140979A (en) * | 2012-06-15 | 2013-12-26 | (주)하이탑 | Excavation hammer apparatus with assembling and separating type of extendable bit |
| CN106869797A (en) * | 2017-03-30 | 2017-06-20 | 中国五冶集团有限公司 | A kind of expanding method of the broaching equipment on construction site |
| CN107046868A (en) * | 2017-04-25 | 2017-08-18 | 嘉兴景园园林建设有限公司 | A kind of pit-picker |
| CN107182372A (en) * | 2017-06-27 | 2017-09-22 | 陈德忠 | A kind of planting tree pit-picker |
| CN107333493A (en) * | 2017-09-12 | 2017-11-10 | 盐城市隆祥机械制造厂 | A kind of agriculture sapling pit-picker with fixing device |
| CN207995661U (en) * | 2018-03-29 | 2018-10-23 | 穆可卿 | Agriculture digging apparatus that is a kind of convenient and stablizing |
| CN208291610U (en) * | 2018-04-24 | 2018-12-28 | 惠州市芊华实业有限公司 | One production of soap packing hoisting mechanism |
| CN108702895A (en) * | 2018-05-03 | 2018-10-26 | 魏焰 | A kind of adjustable digging apparatus of forestry |
| CN208691711U (en) * | 2018-08-10 | 2019-04-05 | 湖北润景园林绿化股份有限公司 | A kind of pit-picker |
| CN208895620U (en) * | 2018-08-22 | 2019-05-24 | 福建跃升机械有限公司 | A kind of pin shaft locating machining clamp |
| CN109005764A (en) * | 2018-10-11 | 2018-12-18 | 柳州市长林苗木种植专业合作社 | A kind of seedling growth pit-picker |
| CN109307128A (en) * | 2018-11-12 | 2019-02-05 | 梁茵茵 | It is a kind of to watch height-adjustable domestic TV |
| CN209061995U (en) * | 2018-11-13 | 2019-07-05 | 惠东县达坤科技有限公司 | Pneumatic press is used in shock-proof front-fork assembly production |
| CN211200523U (en) * | 2019-08-19 | 2020-08-07 | 广西电网有限责任公司贵港供电局 | Mechanical arm of earth boring machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110607990A (en) * | 2019-08-19 | 2019-12-24 | 广西电网有限责任公司贵港供电局 | Variable-diameter drill bit and variable-diameter drill bit device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106888627B (en) | A kind of labour-saving Portable digging machine for planting trees | |
| CN103004329B (en) | Planting digging machine drill with variable diameter | |
| CN108049822A (en) | A kind of horizontal directional drilling machine of the raising Drilling Precision based on Internet of Things | |
| CN115110894B (en) | Building construction foundation pile drilling equipment | |
| CN110607816A (en) | Mechanical arm of earth boring machine | |
| CN202998807U (en) | Variable-diameter earth boring machine drill bit for tree planting | |
| CN205510758U (en) | Seedling planting digging device | |
| CN113692808B (en) | Arbor planting and pit digging device and method based on intelligent gardens | |
| CN211200523U (en) | Mechanical arm of earth boring machine | |
| CN211201767U (en) | Variable-diameter drill bit and variable-diameter drill bit device | |
| CN206458316U (en) | A kind of automatic steady fixed pattern electric pole mounting hole drills through device | |
| CN110607990A (en) | Variable-diameter drill bit and variable-diameter drill bit device | |
| CN218417732U (en) | Auxiliary planting device for tree seedlings | |
| CN111425145A (en) | Drill bit device for pipe curtain construction | |
| CN204960836U (en) | Novel simple and easy workover rig | |
| CN203206706U (en) | Portable earth drill | |
| CN210067974U (en) | Pile hole bottom expanding device | |
| CN215065619U (en) | Geological exploration table type core cutting device | |
| CN208262472U (en) | A kind of annular is redrilled with gear-hobbing machine burr remover | |
| CN209105601U (en) | A kind of municipal administration greening pit-picker | |
| CN216197883U (en) | Drilling tool for hole forming and pipe following of slope reinforcing anchor cable | |
| CN205154000U (en) | Can bore heterotype hole's rig | |
| CN216477139U (en) | Soil drilling machine for garden engineering | |
| CN205089207U (en) | Device is dug soon in crank drive formula wire pole installation hole | |
| CN218324777U (en) | Drilling straightening mechanism for engineering geological drilling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |