CN111975712A - Straight thread sleeve steel bar installation device and operation method thereof - Google Patents
Straight thread sleeve steel bar installation device and operation method thereof Download PDFInfo
- Publication number
- CN111975712A CN111975712A CN202010731269.2A CN202010731269A CN111975712A CN 111975712 A CN111975712 A CN 111975712A CN 202010731269 A CN202010731269 A CN 202010731269A CN 111975712 A CN111975712 A CN 111975712A
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- straight thread
- thread sleeve
- driven wheel
- switch
- driving wheel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000009434 installation Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title abstract description 13
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims 1
- 238000011017 operating method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 208000011092 Hand injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The invention provides a straight thread sleeve steel bar installation device, which comprises a base, a fixed support, a clamping and rotating system, a power system and a control system, wherein: centre gripping rotating system is including being provided with the action wheel, first from driving wheel, second from driving wheel, third from driving wheel and friction belt, the action wheel first from the driving wheel the second from the driving wheel the third is the V font and distributes from the driving wheel, wherein first from the driving wheel with the second is set up in two ends of V font from the driving wheel, the third is set up in the interior base angle of V font from the driving wheel, the action wheel sets up in the outer base angle of V font. The invention also provides an operation method of the straight thread sleeve steel bar. The mounting device provided by the invention has the advantages of simple structure, easiness in control, easiness in material obtaining, easiness in manufacturing, operation perpendicular to the workpiece, suitability for workpieces with different diameters, universality in use, capability of being operated by a single person, capability of effectively reducing labor, and improvement on labor productivity and operation safety.
Description
Technical Field
The invention belongs to the field of building auxiliary tools, and particularly relates to a straight thread sleeve steel bar installation device and an operation method thereof.
Background
At present, the installation and connection of the straight thread sleeve and the steel bar in the building engineering mainly depend on manual work, and usually two workers use a working wrench or a pipe wrench to screw the steel bar thread head into the straight thread sleeve and screw the steel bar thread head tightly. The operation method has the advantages of large workload, manpower consumption, high labor cost, low working efficiency and easy hand injury of constructors.
Disclosure of Invention
In view of the above problems, the invention provides a straight thread sleeve steel bar installation device and an operation method thereof, the device is easy to obtain materials, simple to manufacture, perpendicular to a workpiece to operate, suitable for workpieces with different diameters, universal to use, capable of being operated by a single person, capable of effectively reducing labor, and improving labor productivity and operation safety.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a straight thread sleeve pipe reinforcing bar installation device, includes base, fixed bolster, centre gripping rotating system, driving system and control system, wherein:
the clamping and rotating system comprises a driving wheel, a first driven wheel, a second driven wheel, a third driven wheel and a friction belt, wherein the driving wheel, the first driven wheel, the second driven wheel and the third driven wheel are distributed in a V shape; the first driven wheel and the second driven wheel are arranged at two ends of the V shape, the third driven wheel is arranged at the inner bottom angle of the V shape, and the driving wheel is arranged at the outer bottom angle of the V shape;
the fixed support is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft, the first driven wheel, the second driven wheel and the third driven wheel are correspondingly arranged on the first rotating shaft, the second rotating shaft and the third rotating shaft, and the driving wheel is arranged on a motor spindle;
the friction belts are wound on the driving wheel, the first driven wheel, the second driven wheel and the third driven wheel and are distributed in a V shape; when the friction belt is used, the driving wheel drives the friction belt to rotate, a steel bar or a straight thread sleeve is placed in a V-shaped groove formed by the friction belt, and the steel bar or the straight thread sleeve is driven to rotate to complete installation;
the power system is connected with the control system;
the fixed support, the power system and the control system are all installed on the base.
Further, the power system comprises a motor and a battery.
Furthermore, a protective cover is arranged on the outer sides of the motor and the battery.
Further, the control system comprises a handle, a first switch and a second switch.
Further, the first switch is a starting switch, and the second switch is a direction adjusting switch.
Further, the diameter of the third driven wheel is smaller than that of the reinforcing steel bar or the straight threaded sleeve, and the diameters of the first driven wheel and the second driven wheel are both larger than that of the reinforcing steel bar or the straight threaded sleeve.
Further, the number of teeth of the first driven wheel and the second driven wheel is 60.
Further, the number of the third driven gear teeth is 12.
Further, the first rotating shaft, the second rotating shaft and the third rotating shaft are all M12 round steel.
An operation method for installing straight thread sleeve reinforcing steel bars adopts the installation device, and comprises the following steps:
s1: screwing the lower part of the steel bar into one end of the straight thread sleeve and connecting the lower part of the steel bar with the straight thread sleeve in a buckling way;
s2: placing the straight thread sleeve into a V-shaped groove, and tensioning the straight thread sleeve towards the bottom angle of the V-shaped groove to enable the outer surface of the straight thread sleeve to be in contact with the friction belt;
s3: setting the rotation direction of a motor in the power system through a second switch in the control system, starting the motor by opening a first switch in the control system, driving the driving wheel to rotate by the motor, further driving the friction belt to rotate, driving the straight thread sleeve to rotate by the friction belt, and screwing all the steel bars on the lower part into the thread opening of the straight thread sleeve;
s4: closing the first switch, and taking down the connected straight thread sleeve and the lower part of the steel bar;
s5: screwing the upper reinforcing steel bar into the other end of the straight thread sleeve and connecting the upper reinforcing steel bar with the straight thread sleeve in a buckling manner;
s6: putting the straight thread sleeve into a V-shaped groove, and tensioning the straight thread sleeve towards the bottom angle of the V-shaped groove so as to enable the outer surface of the straight thread sleeve to be in contact with the friction belt;
s7: setting the rotation direction of a motor through the second switch, starting the motor by turning on the first switch, driving the driving wheel to rotate by the motor, further driving the friction belt to rotate, driving the straight thread sleeve to rotate by the friction belt, and screwing the upper reinforcing steel bar into the thread opening of the straight thread sleeve;
s8: and closing the first switch, and taking down the connected upper reinforcing steel bars, the straight thread sleeves and the lower reinforcing steel bars.
The invention has the beneficial effects that: the clamping and rotating system is in a V shape, a workpiece can be vertically operated with the device, and the clamping and rotating device is suitable for straight threaded sleeves or steel bars with different diameters; the friction belt is V-shaped, so that a straight thread sleeve or a steel bar can be conveniently clamped, the clamping force can be adjusted by approaching or departing from a V-shaped angle, and an additional clamping system is not needed; the motor and the battery are provided with protective covers, so that potential safety hazards are reduced to the maximum extent, and the safety of the device is guaranteed; only 1 worker is needed when the device is used, the labor intensity is low, the working efficiency is high, and the labor cost can be effectively reduced; the invention changes the traditional manual process for connecting the straight thread sleeve or the steel bar into a semi-mechanical process, realizes mechanical operation, greatly improves the working efficiency and the working quality, has simple structure and strong working stability, and can be suitable for connecting the steel bars with various diameters.
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, and 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 these drawings without creative efforts.
FIG. 1 is a schematic structural view of a fixing device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a spin chuck system according to an embodiment of the present invention;
FIG. 3 is a schematic view of a rotary shaft coupled to a driven wheel according to an embodiment of the present invention;
FIG. 4 is a cross-sectional schematic view of a friction belt according to an embodiment of the present invention;
FIG. 5 is a schematic view of the operation direction of the fixing device according to an embodiment of the present invention.
In the figure:
10. base 20, fixed bracket 21, first rotation axis
22. Second rotation shaft 23, third rotation shaft 30, clamping rotation system
31. A driving wheel 32, a first driven wheel 33 and a second driven wheel
34. Third driven wheel 35, friction belt 40 and power system
41. Motor 42, battery 43, protective cover
50. Control system 51, handle 52, first switch
53. Second switch 60, reinforcing bar or straight threaded sleeve
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The embodiment of the invention provides a device for installing a straight thread sleeve reinforcing steel bar and an operation method thereof, and as shown in figure 1, the device comprises: comprises a base 10, a fixed bracket 20, a clamping and rotating system 30, a power system 40 and a control system 50, which are described in detail below.
As shown in fig. 1 to 4, in the present embodiment, an installation apparatus for a straight-threaded sleeve steel bar includes a base 10, a fixed bracket 20, a clamping and rotating system 30, a power system 40, and a control system 50. The base 10 is used for fixing the fixed bracket 20, the clamping and rotating system 30, the power system 40 and the control system 50, is an integral connecting component of the whole device, and is made of nodular cast iron in the embodiment.
The clamping and rotating system 30 is used for clamping a steel bar or a straight thread sleeve 60, and is used for rotating the steel bar or the straight thread sleeve 60 after clamping, the device mainly comprises a driving wheel 31, a first driven wheel 32, a second driven wheel 33, a third driven wheel 34 and a friction belt 35, the driving wheel 31, the first driven wheel 32, the second driven wheel 33 and the third driven wheel 34 are distributed in a V shape, wherein the first driven wheel 32 and the second driven wheel 33 are arranged at the end points of the two ends of the V shape, the third driven wheel 34 is arranged at the inner bottom corner of the V shape, and the driving wheel 31 is arranged at the outer bottom corner of the V shape. The first driven pulley 32, the second driven pulley 33, and the third driven pulley 34 are respectively mounted on the first rotating shaft 21, the second rotating shaft 22, and the third rotating shaft 23 of the fixed bracket 20, and the driving pulley 31 is connected to the motor 41 in a dark rotation manner.
The friction belt 35 is wound on the driving wheel 31, the first driven wheel 32, the second driven wheel 33 and the third driven wheel 34, and the friction belt is also distributed in a V shape after being wound, so that when the friction belt is used, the steel bars or the straight thread sleeves 60 are placed in V-shaped grooves formed in the friction belt 35, the batteries 42 provide power for the motors 41, the motors 41 are started through the control system 50, the motors 41 drive the driving wheel 31 to rotate, the driving wheel 31 drives the friction belt 35 to rotate, and at the moment, the steel bars or the straight thread sleeves 60 are in contact friction with the friction belt 35 to drive the steel bars or the straight thread sleeves 60 to rotate to complete installation.
Wherein the power system 40 is connected to the control system 50 via signal transmission lines and electrical wires.
Further, the power system 40 includes a motor 41 and a battery 42.
Further, the control system includes a handle 51, a first switch 52, and a second switch 53.
Further, the first switch is a starting switch, and the second switch is a direction adjusting switch.
Further, the diameter of the third driven wheel 34 is smaller than that of the reinforcing steel bar or the straight threaded sleeve 60, and the diameters of the first driven wheel 32 and the second driven wheel 33 are respectively larger than that of the reinforcing steel bar or the straight threaded sleeve 60, so that the V-shaped opening is inevitably larger than that of the reinforcing steel bar or the straight threaded sleeve 60, and the V-shaped opening is convenient to enter.
Furthermore, the number of teeth of the first driven wheel 32 and the second driven wheel 33 is 60, and the number of teeth of the third driven wheel 34 is 12.
Further, the first rotating shaft 21, the second rotating shaft 22, and the third rotating shaft 23 are all M12 round steel.
Further, a protective cover 43 is mounted on the motor 41 and the battery 42.
An operation method for installing steel bars in a straight thread sleeve is shown in fig. 5, and comprises the following steps:
firstly, a user screws one end of the straight thread sleeve into a lower reinforcing steel bar buckle; then, the straight thread sleeve is placed into the V-shaped groove, and is tensioned towards the bottom angle direction of the V-shaped groove, so that the outer surface of the straight thread sleeve is in contact with the friction belt 35; the rotation direction of the motor 41 is set through the second switch 53, the first switch 52 is turned on to start the motor 41, the motor 41 drives the driving wheel 31 to rotate, the friction belt 35 is further driven to rotate, the friction belt 35 drives the straight thread sleeve to rotate, and the straight thread sleeve is screwed into all the openings of the steel bars; closing the first switch 52, and taking down the connected straight thread sleeve and the lower steel bar; the connection between the straight thread sleeve and the lower steel bar is completed.
Next, the other end of the straight thread sleeve is screwed into a buckle of the upper reinforcing steel bar; putting the straight thread sleeve into the V-shaped groove, and tensioning the straight thread sleeve towards the bottom angle of the V-shaped groove so as to enable the outer surface of the straight thread sleeve to be in contact with the friction belt 35; the rotation direction of the motor 41 is set through the second switch 53, the first switch 52 is turned on to start the motor 41, the motor 41 drives the driving wheel 31 to rotate, the friction belt 35 is further driven to rotate, the friction belt 35 drives the straight thread sleeve to rotate, and the straight thread sleeve is screwed into all the openings of the steel bars; the first switch 52 is closed and the connected upper reinforcement, straight threaded sleeve, lower reinforcement are removed.
At this time, the integral connection work of the upper reinforcing steel bar, the straight thread sleeve and the lower reinforcing steel bar is completed.
Compared with the prior art, the device and the method for installing the straight thread sleeve and the steel bar have the advantages that the clamping and rotating system in the device is V-shaped, a workpiece can be vertically operated with the device, and meanwhile, the device and the method are suitable for straight thread sleeves or steel bars with different diameters; the friction belt is V-shaped, so that a straight thread sleeve or a steel bar can be conveniently clamped, the clamping force can be adjusted by approaching or departing from a V-shaped angle, and an additional clamping system is not needed; the motor and the battery are provided with protective covers, so that potential safety hazards are reduced to the maximum extent, and the safety of the device is guaranteed; only 1 worker is needed when the device is used, the labor intensity is low, the working efficiency is high, and the labor cost can be effectively reduced; the invention changes the traditional manual process for connecting the straight thread sleeve or the steel bar into a semi-mechanical process, realizes mechanical operation, greatly improves the working efficiency and the working quality, has simple structure and strong working stability, and can be suitable for connecting the steel bars with various diameters.
The embodiments of the present invention have been described in detail, and the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. The utility model provides a straight thread sleeve pipe reinforcing bar installation device which characterized in that, includes base, fixed bolster, centre gripping rotating system, driving system and control system, wherein:
the clamping and rotating system comprises a driving wheel, a first driven wheel, a second driven wheel, a third driven wheel and a friction belt, wherein the driving wheel, the first driven wheel, the second driven wheel and the third driven wheel are distributed in a V shape; the first driven wheel and the second driven wheel are arranged at two ends of the V shape, the third driven wheel is arranged at the inner bottom angle of the V shape, and the driving wheel is arranged at the outer bottom angle of the V shape;
the fixed support is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft, the first driven wheel, the second driven wheel and the third driven wheel are correspondingly arranged on the first rotating shaft, the second rotating shaft and the third rotating shaft, and the driving wheel is arranged on a motor spindle; the friction belts are wound on the driving wheel, the first driven wheel, the second driven wheel and the third driven wheel and are distributed in a V shape; when the friction belt is used, the driving wheel drives the friction belt to rotate, a steel bar or a straight thread sleeve is placed in a V-shaped groove formed by the friction belt, and the steel bar or the straight thread sleeve is driven to rotate to complete installation;
the power system is connected with the control system;
the fixed support, the power system and the control system are all installed on the base.
2. A straight thread casing reinforcing bar installation apparatus as claimed in claim 1, wherein said power system comprises an electric motor and a battery.
3. A straight thread sleeve reinforcing bar mounting apparatus as claimed in claim 2, wherein a protective cover is provided outside said motor and said battery.
4. A straight thread casing rebar installation device as claimed in any one of claims 1-3 wherein the control system comprises a handle, a first switch, and a second switch.
5. A straight thread casing reinforcing bar installation apparatus as claimed in claim 4, wherein said first switch is an activation switch and said second switch is a direction adjustment switch.
6. A straight thread casing reinforcing bar installation apparatus as claimed in any one of claims 1 to 3, 5, wherein the diameter of said third driven wheel is less than the diameter of said reinforcing bar or said straight thread sleeve, and the diameter of each of said first and second driven wheels is greater than the diameter of said reinforcing bar or said straight thread sleeve.
7. A straight thread casing reinforcing bar installation apparatus as claimed in claim 6, wherein the number of teeth of said first driven wheel and said second driven wheel is 60.
8. A straight thread casing reinforcing bar installation apparatus according to claim 7, wherein the number of teeth of said third driven gear is 12.
9. A straight thread casing reinforcing bar installation apparatus as claimed in any one of claims 1 to 3, 5 and 7 to 8, wherein said first rotation axis, said second rotation axis and said third rotation axis are M12 round bars.
10. An operating method for installing steel bars in a straight thread casing, wherein the installation device according to any one of claims 1 to 9 is used, and the steps comprise:
s1: screwing the lower part of the steel bar into one end of the straight thread sleeve and connecting the lower part of the steel bar with the straight thread sleeve in a buckling way;
s2: placing the straight thread sleeve into a V-shaped groove, and tensioning the straight thread sleeve towards the bottom angle of the V-shaped groove to enable the outer surface of the straight thread sleeve to be in contact with the friction belt;
s3: setting the rotation direction of a motor in the power system through a second switch in the control system, starting the motor by opening a first switch in the control system, driving the driving wheel to rotate by the motor, further driving the friction belt to rotate, driving the straight thread sleeve to rotate by the friction belt, and screwing all the steel bars on the lower part into the thread opening of the straight thread sleeve;
s4: closing the first switch, and taking down the connected straight thread sleeve and the lower part of the steel bar;
s5: screwing the upper reinforcing steel bar into the other end of the straight thread sleeve and connecting the upper reinforcing steel bar with the straight thread sleeve in a buckling manner;
s6: putting the straight thread sleeve into a V-shaped groove, and tensioning the straight thread sleeve towards the bottom angle of the V-shaped groove so as to enable the outer surface of the straight thread sleeve to be in contact with the friction belt;
s7: setting the rotation direction of a motor through the second switch, starting the motor by turning on the first switch, driving the driving wheel to rotate by the motor, further driving the friction belt to rotate, driving the straight thread sleeve to rotate by the friction belt, and screwing the upper reinforcing steel bar into the thread opening of the straight thread sleeve;
s8: and closing the first switch, and taking down the connected upper reinforcing steel bars, the straight thread sleeves and the lower reinforcing steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010731269.2A CN111975712B (en) | 2020-07-27 | 2020-07-27 | Straight threaded sleeve steel bar installation device and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010731269.2A CN111975712B (en) | 2020-07-27 | 2020-07-27 | Straight threaded sleeve steel bar installation device and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111975712A true CN111975712A (en) | 2020-11-24 |
| CN111975712B CN111975712B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010731269.2A Active CN111975712B (en) | 2020-07-27 | 2020-07-27 | Straight threaded sleeve steel bar installation device and operation method thereof |
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| Country | Link |
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| CN (1) | CN111975712B (en) |
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| US20020112337A1 (en) * | 2001-01-23 | 2002-08-22 | Gregel John J. | Reinforcing bar tool and method |
| CN201900598U (en) * | 2010-12-07 | 2011-07-20 | 常熟通润汽车零部件股份有限公司 | Pipe tongs with jack |
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| CN106760225A (en) * | 2016-12-14 | 2017-05-31 | 上海建工二建集团有限公司 | A kind of straight screw sleeve connection device and its application method |
| CN206263837U (en) * | 2016-11-29 | 2017-06-20 | 中冶天工集团有限公司 | Chain type spanner connector |
| CN107088747A (en) * | 2017-06-27 | 2017-08-25 | 鲁泽良 | A kind of reinforced bar straight thread sleeve connects machine automatically |
| CN108544421A (en) * | 2018-06-20 | 2018-09-18 | 齐建华 | A kind of electric tool of Fast Installation reinforced bar straight thread casing |
| CN110861036A (en) * | 2019-11-29 | 2020-03-06 | 北京城建轨道交通建设工程有限公司 | Automatic device for connecting reinforcing steel bar straight thread sleeve |
| CN210177975U (en) * | 2019-06-02 | 2020-03-24 | 山东克瑞斯重工集团有限公司 | Steel bar sleeve connecting device |
| CN210756210U (en) * | 2019-09-02 | 2020-06-16 | 无锡市龙马塑胶有限公司 | Stainless steel sleeve screwing machine |
| CN212471345U (en) * | 2020-07-27 | 2021-02-05 | 中冶天工集团有限公司 | Straight thread sleeve pipe reinforcing bar installation device |
-
2020
- 2020-07-27 CN CN202010731269.2A patent/CN111975712B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020112337A1 (en) * | 2001-01-23 | 2002-08-22 | Gregel John J. | Reinforcing bar tool and method |
| CN201900598U (en) * | 2010-12-07 | 2011-07-20 | 常熟通润汽车零部件股份有限公司 | Pipe tongs with jack |
| CN202742359U (en) * | 2012-07-03 | 2013-02-20 | 华锐风电科技(集团)股份有限公司 | Blade turnover device |
| CN206263837U (en) * | 2016-11-29 | 2017-06-20 | 中冶天工集团有限公司 | Chain type spanner connector |
| CN106760225A (en) * | 2016-12-14 | 2017-05-31 | 上海建工二建集团有限公司 | A kind of straight screw sleeve connection device and its application method |
| CN107088747A (en) * | 2017-06-27 | 2017-08-25 | 鲁泽良 | A kind of reinforced bar straight thread sleeve connects machine automatically |
| CN108544421A (en) * | 2018-06-20 | 2018-09-18 | 齐建华 | A kind of electric tool of Fast Installation reinforced bar straight thread casing |
| CN210177975U (en) * | 2019-06-02 | 2020-03-24 | 山东克瑞斯重工集团有限公司 | Steel bar sleeve connecting device |
| CN210756210U (en) * | 2019-09-02 | 2020-06-16 | 无锡市龙马塑胶有限公司 | Stainless steel sleeve screwing machine |
| CN110861036A (en) * | 2019-11-29 | 2020-03-06 | 北京城建轨道交通建设工程有限公司 | Automatic device for connecting reinforcing steel bar straight thread sleeve |
| CN212471345U (en) * | 2020-07-27 | 2021-02-05 | 中冶天工集团有限公司 | Straight thread sleeve pipe reinforcing bar installation device |
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| Publication number | Publication date |
|---|---|
| CN111975712B (en) | 2024-02-06 |
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