CN112170896A - Full-automatic perforating machine for building steel pipes - Google Patents
Full-automatic perforating machine for building steel pipes Download PDFInfo
- Publication number
- CN112170896A CN112170896A CN202011065389.XA CN202011065389A CN112170896A CN 112170896 A CN112170896 A CN 112170896A CN 202011065389 A CN202011065389 A CN 202011065389A CN 112170896 A CN112170896 A CN 112170896A
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- Prior art keywords
- cavity
- motor
- slideway
- push wheel
- main
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/064—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding elongated workpieces, e.g. pipes, bars or profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a full-automatic perforating machine for building steel pipes, which comprises a base and a drilling device, wherein a low base is fixedly mounted at the lower end of the base, a main slide way with a forward opening is formed at the front end of the low base, a rotatable sleeve is slidably mounted in the main slide way, an outward sleeve gear cavity is formed in the circumferential position of the rotatable sleeve, and a sleeve gear is fixedly mounted in the sleeve gear cavity.
Description
Technical Field
The invention relates to a full-automatic perforating machine for a building steel pipe, and mainly relates to the technical field of building machinery.
Background
In the building construction process, there is the use of a large amount of steel pipes, processing, the steel pipe punches, be the demand that the building construction in-process often, but the present steel pipe operation process that punches now mostly uses the magnetic drill, the magnetic drill installation is troublesome, and if need a large amount of, the punching of multiple angle is then wasted time and energy, extravagant manpower and materials, unable convenient punching fast, inefficiency, and if less steel pipe still need face the unable fixed problem of magnetic drill.
In conclusion, the building steel pipe drilling machine is difficult in drilling and low in drilling efficiency, and the building steel pipe drilling machine is improved aiming at the defects.
Disclosure of Invention
The invention aims to solve the technical problem of providing a full-automatic perforating machine for building steel pipes, and overcomes the problems.
The invention is realized by the following technical scheme.
The invention relates to a full-automatic perforating machine for building steel pipes, which comprises a base and a drilling device, wherein a lower base is fixedly arranged at the lower end of the base, a main slideway with a forward opening is arranged at the front end of the lower base, a rotatable sleeve is slidably arranged in the main slideway, an outward sleeve gear cavity is arranged at the circumferential position of the rotatable sleeve, a sleeve gear is fixedly arranged in the sleeve gear cavity, the sleeve gear is meshed with a driving sleeve gear fixedly arranged at the bottom end of a rotating shaft of a main slideway motor, the main slideway motor is fixedly arranged in a main slideway motor cavity, a downward opening of the main slideway motor cavity is arranged in a main slideway motor box, the main slideway motor box is fixedly arranged at the right end of a main slideway motor supporting rod, the main slideway motor supporting rod is fixedly arranged at the right end of the base, a vertically through steel pipe cavity is arranged at the center of the rotatable sleeve, three drilling devices and a driving wheel pushing cavity which are opened towards the, the driving push wheel is rotatably arranged in the driving push wheel cavity, a driving push wheel transmission gear is fixedly arranged in the driving push wheel, the driving push wheel transmission gear is meshed with a driving push wheel gear, the driving push wheel gear is fixedly arranged at the upper end of a rotating shaft of a driving push wheel motor, the driving push wheel motor is fixedly arranged in a driving push wheel motor cavity with an upward opening at the bottom end and communicated with the driving push wheel motor cavity, the driving push wheel cavity is arranged in a bilateral symmetry manner, a driven push wheel cavity is upwards opened at the bottom end of the steel tube cavity, a driven push wheel is rotatably arranged in the driven push wheel cavity, an auxiliary slideway motor box is fixedly arranged at the right end of the base, an upward and downward auxiliary slideway motor cavity is arranged in the auxiliary slideway motor box, an auxiliary slideway motor is fixedly arranged in the auxiliary slideway motor cavity, and a rotating shaft extending upwards and downwards from the auxiliary slideway motor is an auxiliary slideway motor shaft, the motor shaft of the auxiliary slideway is connected to a transmission box, a transmission cavity with an opening in the direction of the auxiliary slideway motor box is arranged in the transmission box, the transmission cavity is also opened leftwards, the motor shaft of the auxiliary slideway extends into the transmission cavity and is meshed with a driven bevel gear, the driven bevel gear is fixedly arranged at the left end of a screw rod, the front end of a base is provided with an auxiliary slideway with an opening upwards leftwards, the driven bevel gear is rotatably arranged in the auxiliary slideway, two clamping blocks are slidably arranged in the auxiliary slideway, the rear part of each clamping block is provided with a threaded cavity which is communicated leftwards and rightwards, the threaded cavity is in threaded connection with the screw rod, the clamping block at the left end is in threaded connection with a left screw rod section at the left side of the screw rod, the clamping block at the right end is in threaded connection with a right thread section at the right side of the screw rod, the thread direction of the, the rear end of the drilling device is a drilling ferrule, the front end of the drilling ferrule is fixedly provided with a drilling box, the drilling box is internally provided with an upper slideway and a lower slideway which are communicated from front to back, a drill sleeve is arranged in the upper slideway and the lower slideway in a front-back sliding manner, the front end of the drill sleeve is fixedly provided with a main motor box, the main motor box is internally provided with a main motor cavity which is opened backwards, a main motor is fixedly arranged in the main motor cavity, a rotating shaft of the main motor extends backwards into a drill transmission cavity, the rear end of the rotating shaft of the main motor is fixedly connected with a drill, the right end of the drilling box is fixedly provided with a drill lifting motor box, the drill lifting motor box is internally provided with a drill lifting motor cavity which is opened forwards, the drill lifting motor cavity is fixedly provided with a drill lifting motor, the front end of a push rod of the drill lifting motor is fixedly connected with a drill lifting, the middle position of the drilling ferrule is a drilling cavity which is communicated up and down.
Furthermore, the rotatable sleeve is provided with an upward and downward auxiliary sliding block, the lower base is provided with an upward and downward opening auxiliary slideway, the auxiliary sliding block is slidably mounted in the auxiliary slideway, and the rotatable sleeve is assisted to rotate around the circle center.
Furthermore, the right end of the left end clamping block and the left end of the right end clamping block are both provided with clamping cavities, and rubber blocks are fixedly mounted on the clamping cavities for assisting in fixing the steel pipes.
Furthermore, vice slide and front end thereof the clamp splice, right side screw thread section mirror image with vice slide motor symmetry is installed two for supplementary fixed steel pipe.
Furthermore, the driving push wheel, the driven push wheel and the rubber block are made of rubber materials, certain elasticity and friction force are guaranteed, and the steel pipe can be placed into the steel pipe cavity.
The invention has the beneficial effects that: according to the invention, the conveying mechanism and the punching mechanism are combined, so that the automation of punching the building steel pipe is realized, a large amount of manpower and material resources are saved, a large amount of working efficiency is improved, manual operation is reduced, the punching angle can be adjusted, manual steering is not needed, the fine-assembly degree and efficiency are ensured, the accident rate of manual operation is reduced, and the safety of workers is ensured.
Drawings
In order to more clearly illustrate the embodiments of the 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, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic view of the structure at B-B in FIG. 1;
FIG. 4 is a schematic view of the structure at C-C in FIG. 1;
FIG. 5 is an enlarged schematic view of the driving wheel pushing device 39 in FIG. 1;
FIG. 6 is a side cross-sectional schematic view of the main slide 12 of FIG. 2.
Detailed Description
The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
With reference to the accompanying drawings 1-6, the full-automatic perforating machine for the building steel pipe comprises a base 43 and a drilling device 37, wherein the lower end of the base 43 is fixedly provided with a low base 11, the front end of the low base 11 is provided with a main slideway 12 with a forward opening, a rotatable sleeve 13 is slidably arranged in the main slideway 12, the circumferential position of the rotatable sleeve 13 is provided with an outward sleeve gear cavity 44, a sleeve gear 33 is fixedly arranged in the sleeve gear cavity 44, the sleeve gear 33 is engaged with a driving sleeve gear 32 fixedly arranged at the bottom end of a rotating shaft of a main slideway motor 29, the main slideway motor 29 is fixedly arranged in a main slideway motor cavity 31, the main slideway motor cavity 31 is opened downwards in a main slideway motor box 30, the main slideway motor box 30 is fixedly arranged at the right end of a main slideway motor supporting rod 28, the main slideway motor supporting rod 28 is fixedly arranged at the right end of the base 43, and a through steel pipe cavity 40 is arranged at the, the drilling device 37 and the driving push wheel cavity 69 with three openings towards the circle center position are uniformly arranged on the inner wall of the steel tube cavity 40, a driving push wheel 71 is installed in the driving push wheel cavity 69 in a rotating mode, a driving push wheel transmission gear 72 is fixedly installed in the driving push wheel 71, the driving push wheel transmission gear 72 is meshed with the driving push wheel gear 68, the driving push wheel gear 68 is fixedly installed at the upper end of a rotating shaft of the driving push wheel motor 74, the driving push wheel motor 74 is fixedly installed at a 64 bottom end upward opening and is communicated with a driving push wheel motor cavity 75 communicated with the 64, the 64 end opening is circular and is communicated with the driving push wheel cavity 69, the driving push wheel cavity 69 is arranged in a bilateral symmetry mode, a driven push wheel cavity 47 is opened upwards at the bottom end of the steel tube cavity 40, a driven push wheel 34 is installed in the driven push wheel cavity 47 in a rotating mode, an auxiliary slideway motor box 25 is fixedly installed at the right end of the base 43, an upward and downward auxiliary slideway motor cavity 23 is formed in the auxiliary slideway motor box 25, an auxiliary slideway motor 24 is fixedly installed in the auxiliary slideway motor cavity 23, a rotating shaft extending upwards and downwards from the auxiliary slideway motor 24 is an auxiliary slideway motor shaft 26, the auxiliary slideway motor shaft 26 is connected to a transmission box 27, a transmission cavity 53 with an opening in the direction of the auxiliary slideway motor box 25 is formed in the transmission box 27, the transmission cavity 53 is also opened towards the left, the auxiliary slideway motor shaft 26 extends into the transmission cavity 53 and is meshed with a driven bevel gear 57, the driven bevel gear 57 is fixedly installed at the left end of a screw rod 52, an auxiliary slideway 62 with an opening towards the left is formed in the front end of a base 43, the driven bevel gear 57 is rotatably installed in the auxiliary slideway 62, two clamping blocks 48 are slidably installed in the auxiliary slideway 62, and a left-right through threaded cavity 63 is formed in the rear part of each clamping block 48, the screw cavity 63 is in threaded connection with the screw rod 52, the clamping block 48 at the left end is in threaded connection with the left screw rod section 60 at the left side of the screw rod 52, the clamping block 48 at the right end is in threaded connection with the right screw thread section 51 at the right side of the screw rod 52, the screw thread direction of the right screw thread section 51 is opposite to that of the left screw rod section 60, the upper end of the base 43 is fixedly provided with the drilling device 37, the rear end of the drilling device 37 is a drilling ferrule 16, the front end of the drilling ferrule 16 is fixedly provided with the drilling box 17, the drilling box 17 is provided with an upper and lower slideway 58 which is through from front to back, the upper and lower slideway 58 is internally provided with the drill bit sleeve 54 which can slide from front to back, the front end of the drill bit sleeve 54 is fixedly provided with the main motor box 19, the main motor cavity 66 which is provided with a rear opening is arranged in the main motor cavity 66, the rotating shaft of the, the drill bit lifting mechanism is characterized in that a drill bit 59 is fixedly connected to the rear end of a rotating shaft of the main motor 18, a drill bit lifting motor box 20 is fixedly mounted at the right end of the drilling box 17, a drill bit lifting motor cavity 36 with a front opening is formed in the drill bit lifting motor box 20, a drill bit lifting motor 35 is fixedly mounted in the drill bit lifting motor cavity 36, a drill bit lifting motor rod 21 is fixedly connected to the front end of a push rod of the drill bit lifting motor 35, the drill bit lifting motor rod 21 is fixedly connected to the drill bit sleeve 54, and a drilling cavity 65 which is through up and down is arranged in the middle of the drilling ferrule 16.
Advantageously, the rotatable sleeve 13 has an auxiliary sliding block 15 which is upward and downward, the lower base 11 has an auxiliary sliding way 14 which is upward and downward opened, the auxiliary sliding block 15 is slidably mounted in the auxiliary sliding way 14 to assist the rotatable sleeve 13 to rotate around the center of a circle.
Beneficially, the right end of the left end clamping block 48 and the left end of the right end clamping block 48 are both provided with clamping cavities 50, and rubber blocks 49 are fixedly mounted on the walls of the clamping cavities 50 and used for assisting in fixing the steel pipes.
Beneficially, two of the auxiliary slideway 22 and the clamping block 48 at the front end thereof are symmetrically installed with the auxiliary slideway motor 24 in a mirror image manner by the right threaded section 51, and are used for assisting in fixing the steel pipe.
Advantageously, the driving push wheel 71, the driven push wheel 34 and the rubber block 49 are made of rubber, so as to ensure a certain elasticity and friction force, and enable the steel pipe to be placed into the steel pipe cavity 40.
Sequence of mechanical actions of the whole device: 1. when a steel pipe is put in, the steel pipe is plugged into the steel pipe cavity 40, the upper end of the steel pipe is drilled with the upper end of the ferrule 16, then the auxiliary slideway motor 24 is started to drive the auxiliary slideway motor shaft 26 to rotate, drive the driving bevel gear 56 and the driven bevel gear 57 meshed with the driving bevel gear to rotate, and drive the right thread section 51 to rotate, and the left thread section 51 and the left screw rod section 60 which are in different directions are screwed, so that the left clamping block 48 and the right clamping block 48 of the thread cavity 63 which are in threaded connection with the screw rod section are close to each other, the steel pipe is.
2. After the fixing is finished, the main motor 18 is started to drive the rotating shaft and the drill bit 59 to rotate, the drill bit lifting motor 35 is started to drive the drill bit lifting motor rod 21 and the drill bit sleeve 54 to translate backwards, after the drill bit 59 touches the steel pipe, the drill bit sleeve 54 continues to translate backwards to drill the steel pipe, and after the drilling is finished, the drill bit lifting motor 35 rotates backwards to enable the drill bit sleeve 54 to move forwards, so that the drill bit 59 is taken out of the inner cavity of the steel pipe. 3. After a hole is drilled, when the position needs to be adjusted, the auxiliary slideway motor 24 rotates reversely to separate the two clamping blocks 48, the driving push wheel motor 74 is started to drive the driving push wheel gear 68 to rotate, then the driving push wheel transmission gear 72 meshed with the clamping blocks 48 also rotates to drive the driving push wheel 71 to rotate, so that the steel pipe moves upwards or downwards, the position is adjusted, then the main slideway motor 29 is started to drive the driving sleeve gear 32 to rotate, the driving sleeve gear 32 enables the rotatable sleeve 13 to rotate around the circle center of the steel pipe cavity 40 through the sleeve gear 33 meshed with the driving sleeve gear 32, and the rotation angle of the steel pipe is adjusted.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a full-automatic puncher of building steel pipe, includes base and drilling equipment, its characterized in that: the lower end of the base is fixedly provided with a low base, the front end of the low base is provided with a main slideway with a forward opening, a rotatable sleeve is arranged in the main slideway in a sliding manner, the circumferential position of the rotatable sleeve is provided with an outward sleeve gear cavity, a sleeve gear is fixedly arranged in the sleeve gear cavity, the sleeve gear is meshed with a driving sleeve gear fixedly arranged at the bottom end of a rotating shaft of a main slideway motor, the main slideway motor is fixedly arranged in the main slideway motor cavity, the downward opening of the main slideway motor cavity is arranged in a main slideway motor box, the main slideway motor box is fixedly arranged at the right end of a main slideway motor supporting rod, the main slideway motor supporting rod is fixedly arranged at the right end of the base, the center of the rotatable sleeve is provided with a vertically through steel pipe cavity, the inner wall of the steel pipe cavity is uniformly provided with three drilling devices and a driving, the driving push wheel is rotatably arranged in the driving push wheel cavity, a driving push wheel transmission gear is fixedly arranged in the driving push wheel, the driving push wheel transmission gear is meshed with a driving push wheel gear, the driving push wheel gear is fixedly arranged at the upper end of a rotating shaft of a driving push wheel motor, the driving push wheel motor is fixedly arranged in a driving push wheel motor cavity with an upward opening at the bottom end and communicated with the driving push wheel motor cavity, the driving push wheel cavity is arranged in a bilateral symmetry manner, a driven push wheel cavity is upwards opened at the bottom end of the steel tube cavity, a driven push wheel is rotatably arranged in the driven push wheel cavity, an auxiliary slideway motor box is fixedly arranged at the right end of the base, an upward and downward auxiliary slideway motor cavity is arranged in the auxiliary slideway motor box, an auxiliary slideway motor is fixedly arranged in the auxiliary slideway motor cavity, and a rotating shaft extending upwards and downwards from the auxiliary slideway motor is an auxiliary slideway motor shaft, the motor shaft of the auxiliary slideway is connected to a transmission box, a transmission cavity with an opening in the direction of the auxiliary slideway motor box is arranged in the transmission box, the transmission cavity is also opened leftwards, the motor shaft of the auxiliary slideway extends into the transmission cavity and is meshed with a driven bevel gear, the driven bevel gear is fixedly arranged at the left end of a screw rod, the front end of a base is provided with an auxiliary slideway with an opening upwards leftwards, the driven bevel gear is rotatably arranged in the auxiliary slideway, two clamping blocks are slidably arranged in the auxiliary slideway, the rear part of each clamping block is provided with a threaded cavity which is communicated leftwards and rightwards, the threaded cavity is in threaded connection with the screw rod, the clamping block at the left end is in threaded connection with a left screw rod section at the left side of the screw rod, the clamping block at the right end is in threaded connection with a right thread section at the right side of the screw rod, the thread direction of the, the rear end of the drilling device is a drilling ferrule, the front end of the drilling ferrule is fixedly provided with a drilling box, the drilling box is internally provided with an upper slideway and a lower slideway which are communicated from front to back, a drill sleeve is arranged in the upper slideway and the lower slideway in a front-back sliding manner, the front end of the drill sleeve is fixedly provided with a main motor box, the main motor box is internally provided with a main motor cavity which is opened backwards, a main motor is fixedly arranged in the main motor cavity, a rotating shaft of the main motor extends backwards into a drill transmission cavity, the rear end of the rotating shaft of the main motor is fixedly connected with a drill, the right end of the drilling box is fixedly provided with a drill lifting motor box, the drill lifting motor box is internally provided with a drill lifting motor cavity which is opened forwards, the drill lifting motor cavity is fixedly provided with a drill lifting motor, the front end of a push rod of the drill lifting motor is fixedly connected with a drill lifting, the middle position of the drilling ferrule is a drilling cavity which is communicated up and down.
2. The full-automatic perforating machine for construction steel pipes as claimed in claim 1, characterized in that: but on the rotatable sleeve to the supplementary slider of ascending decurrent, there is the supplementary slide of ascending downward open-ended in the low base, supplementary slider slidable mounting in the supplementary slide, supplementary rotatable sleeve rotates around the centre of a circle.
3. The full-automatic perforating machine for construction steel pipes as claimed in claim 1, characterized in that: the right-hand member of left end clamp splice, the left end of right-hand member clamp splice all opens and has pressed from both sides the chamber, fixed mounting has the rubber piece on the chamber wall of pressing from both sides for supplementary fixed steel pipe.
4. The full-automatic perforating machine for construction steel pipes as claimed in claim 1, characterized in that: the auxiliary slideway and the clamping block at the front end of the auxiliary slideway are symmetrically provided with two right-thread section mirror images and two auxiliary slideway motors for assisting in fixing the steel pipe.
5. The full-automatic perforating machine for construction steel pipes as claimed in claim 1, characterized in that: the driving push wheel, the driven push wheel and the rubber block are made of rubber materials, certain elasticity and friction force are guaranteed, and the steel pipe can be placed into the steel pipe cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011065389.XA CN112170896A (en) | 2020-09-30 | 2020-09-30 | Full-automatic perforating machine for building steel pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011065389.XA CN112170896A (en) | 2020-09-30 | 2020-09-30 | Full-automatic perforating machine for building steel pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112170896A true CN112170896A (en) | 2021-01-05 |
Family
ID=73948228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011065389.XA Withdrawn CN112170896A (en) | 2020-09-30 | 2020-09-30 | Full-automatic perforating machine for building steel pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112170896A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112548631A (en) * | 2021-01-07 | 2021-03-26 | 义乌市燕荔贸易有限公司 | Multi-pipe-diameter pipeline rapid drilling equipment |
-
2020
- 2020-09-30 CN CN202011065389.XA patent/CN112170896A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112548631A (en) * | 2021-01-07 | 2021-03-26 | 义乌市燕荔贸易有限公司 | Multi-pipe-diameter pipeline rapid drilling equipment |
| CN112548631B (en) * | 2021-01-07 | 2022-10-04 | 义乌市燕荔贸易有限公司 | Multi-pipe-diameter pipeline rapid drilling equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210105 |