CN110640206A - 350-ton hydraulic shear automatic equal-dividing shearing production line for cogging line - Google Patents
350-ton hydraulic shear automatic equal-dividing shearing production line for cogging line Download PDFInfo
- Publication number
- CN110640206A CN110640206A CN201910855280.7A CN201910855280A CN110640206A CN 110640206 A CN110640206 A CN 110640206A CN 201910855280 A CN201910855280 A CN 201910855280A CN 110640206 A CN110640206 A CN 110640206A
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- shearing
- billet
- hydraulic
- line
- cogging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/006—Accessories for shearing machines or shearing devices for obtaining pieces of a predetermined length, e.g. control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/12—Equipment for indicating where to cut
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
Abstract
The invention provides a 350-ton hydraulic shear automatic equal-division shearing production line of a cogging line, and belongs to the technical field of billet shearing machinery. The technical scheme is as follows: a350-ton hydraulic shear automatic equal-division shearing production line comprises a billet roller way conveying mechanism, a hydraulic shear arranged on one side of a billet roller way conveying mechanism, and a billet output structure arranged on the other side of the hydraulic shear and conveyed to a feeding and consignment assembly. The invention has the beneficial effects that: according to the invention, the laser range finder is additionally arranged on the site, and the hydraulic shearing machine is controlled to automatically equally divide and shear the billet material, so that the workload of workers is reduced, the yield of the billet cutting line is improved, manual input is cancelled in the existing hydraulic shearing machine, full-automatic equally dividing and shearing are realized, the yield is improved by 0.5, the laser range finder and the high-temperature pressure sensor are additionally arranged, the precision of the measured length of the billet after cogging can be improved, and the two billets sheared by the hydraulic shearing machine are ensured to be consistent in length.
Description
Technical Field
The invention relates to the technical field of billet shearing machines, in particular to an automatic equally-dividing shearing production line of a 350-ton hydraulic shear of a cogging line.
Background
The existing hydraulic shear for the blooming line has the advantages that the length of a billet to be sheared needs to be manually input due to the fact that the function of measuring the length of the billet to be sheared is not available, the lengths of two sheared finished products are inconsistent, manpower is wasted, the yield cannot be improved, and the production cost cannot be reduced.
The positioning inaccuracy of the cogging line is mainly caused by the following reasons: the encoder is inaccurate in calculation, the conveying roller ways of the billets to be sheared are individually blocked, and the length of the billets to be sheared is inaccurate in calculation.
How to solve the above technical problems is the subject of the present invention.
Disclosure of Invention
The invention aims to provide an automatic equally-dividing shearing production line of a 350-ton hydraulic shear in a cogging line.
The invention is realized by the following measures: a350-ton hydraulic shear automatic equal-dividing and shearing production line of a cogging line is disclosed, wherein a billet roller bed conveying mechanism 1, a hydraulic shear 2 arranged on one side of the billet roller bed conveying mechanism 1, and a billet output structure 3 arranged on the other side of the hydraulic shear 2 are conveyed to a feeding and conveying assembly;
the input end of the billet roller way conveying mechanism 1 is provided with a high-temperature pressure sensor, and the output port of the billet roller way conveying mechanism is provided with a laser range finder; the high-temperature pressure sensor is arranged on a conical driving roller 14 of the billet roller way conveying mechanism 1; the probe of the laser range finder is arranged on one side of the output port of the billet roller conveying mechanism 1 and is used for measuring the cogging line distance of billets; and the high-temperature pressure sensor electric control circuit and the input end of the laser range finder are respectively connected with the controller to form a control loop.
The method comprises the following steps that a high-temperature pressure sensor is additionally arranged to detect whether a high-temperature processed steel billet exceeds a steel billet at a temperature of 400 ℃ or is lower than the steel billet at the temperature of 400 ℃, a controller controls the high-temperature pressure sensor to detect the steel billet at the temperature of 400 ℃, a control end of the controller controls a vibration motor of a steel billet roller way conveying mechanism 1 to stop, and the steel billet cannot be normally conveyed; the laser range finder is mainly used for measuring the distance of the billet to be sheared, which needs to be sheared.
As a further optimized scheme of the 350-ton hydraulic shearing automatic equal-division shearing production line provided by the invention, the hydraulic shearing machine 2 comprises a base 20, a shearing cavity 21 arranged on an inclined surface at the top of the base 20, and a shearing part 22 arranged inside the shearing cavity 21, wherein the shearing part 22 comprises a movable shearing part 220 and a fixed shearing part 221.
As a further optimized scheme of the 350-ton hydraulic shear automatic equal-division shearing production line of the cogging line provided by the invention, a guide rail 200 is arranged on the inclined surface of the top of the machine base 20, and the movable shearing part 220 in sliding fit with the guide rail 200 is arranged in the guide rail.
As a further optimized scheme of the 350-ton hydraulic shearing automatic equal-division shearing production line of the cogging line provided by the invention, the movable shearing piece 220 is composed of a movable seat 2200 in sliding fit with the guide rail 200, and a main V-shaped shearing arm 2201 and an auxiliary V-shaped shearing arm 2202 which are arranged on the movable seat 2200, the tops of the main V-shaped shearing arm 2201 and the auxiliary V-shaped shearing arm 2202 are hinged with each other, the bottom of the auxiliary V-shaped shearing arm 2202 is fixedly connected to the movable seat 2200, and the bottom of the main V-shaped shearing arm 2201 is connected with a power rod of a driving cylinder 5.
As a further optimized scheme of the 350-ton hydraulic shear automatic equal-division shearing production line of the cogging line provided by the invention, the fixed shearing piece 221 is a rectangular cavity and penetrates through one side surface of the shearing cavity 21, and a wedge-shaped shearing blade is arranged at a port of the fixed shearing piece 221, which is positioned in the shearing cavity 21.
As a further optimized scheme of the 350-ton hydraulic shear automatic equal-division shearing production line of the cogging line provided by the invention, the billet roller bed conveying mechanism 1 is composed of a plurality of buffer transmission assemblies 10 arranged at equal intervals, each buffer transmission assembly comprises a base 10, two support frames 11 oppositely arranged on the base 10, elastic parts 12 respectively arranged inside the two support frames 11, a polarization transmission shaft 13 bridged between the two support frames 11, and a conical transmission roller 14 sleeved on the polarization transmission shaft 13; the polarization transmission shaft 13 is coaxially arranged with the output shaft of the vibration motor.
As a further optimized scheme of the 350-ton hydraulic shear automatic equal-division shearing production line of the cogging line provided by the invention, the billet output structure 3 comprises a fixed part 31 connected to a supporting plate 30, a tension spring 32 with one end connected to the fixed part 31, a fixed frame 33 connected to the other end of the tension spring 32, a driving gear 34 and a driven gear 35 inserted in the fixed frame 33, the driving gear 34 is meshed with the driven gear 35, a conical friction member 36 coaxially arranged with the driven gear 35, a transmission member 37 abutted against the inner side surface of the conical friction member 36, a sliding member 38 embedded in the transmission member 37, a fixed guide seat 39 in sliding fit with the sliding member 38, a guide screw rod on the end surface of the sliding member 38 is in threaded connection with the fixed guide seat 39, and the end part of the transmission member 37 is provided with a transmission roller 40 coaxial with the transmission member, and a transmission shaft of the driving gear 34 is coaxially arranged with an output shaft of the speed reducing motor.
As a further optimization scheme of the 350-ton hydraulic shear automatic equal-division shearing production line of the cogging line, the feeding and consignment component comprises a steering engine and a feeding supporting arm connected with the driving end of the steering engine, and the feeding supporting arm is used for conveying steel billets to a refrigeration output roller way for natural refrigeration.
When the invention is actually used: the method comprises the steps that a billet needing to be sheared is transversely moved from one side to the other side through a transverse bracket on a billet machining and shearing production line, a high-temperature pressure sensor detects that the billet which is machined at a high temperature is smoothly transmitted to a hydraulic shearing machine for shearing if the temperature of the billet exceeds 400 ℃, and the billet which is machined at a temperature lower than 400 ℃ is detected by a controller, the controller controls a vibration motor of a billet roller way conveying mechanism to stop, and the billet cannot be continuously transmitted; the laser range finder measures the distance between the billet to be sheared and transmits the billet to the hydraulic shearing machine for shearing through an input roller way of the billet roller way conveying mechanism, the sheared billet is transmitted to a feeding supporting arm of the feeding consignment assembly, and the feeding supporting arm transmits the sheared billet to a refrigerating output roller way for natural refrigeration.
The invention has the beneficial effects that: according to the invention, the laser range finder is additionally arranged on the site, and the hydraulic shearing machine is controlled to automatically equally divide and shear the billet material, so that the workload of workers is reduced, the yield of the billet cutting line is improved, manual input is cancelled in the existing hydraulic shearing machine, full-automatic equally dividing and shearing are realized, the yield is improved by 0.5, the laser range finder and the high-temperature pressure sensor are additionally arranged, the length precision of the billet after billet cutting can be improved, the length consistency of two billets sheared by the hydraulic shearing machine is ensured, and in addition, the guarantee is provided for canceling the manual input and realizing automatic shearing.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic overall structure diagram of the embodiment of the present invention.
Fig. 3 is a schematic overall structure diagram of the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a hydraulic shearing machine according to an embodiment of the present invention.
FIG. 5 is a schematic structural diagram illustrating a positional relationship between a hydraulic shear and a billet output structure according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a billet output structure according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a buffer transmission assembly according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a polarization transmission shaft according to an embodiment of the present invention.
Wherein the reference numerals are: 1. a billet roller way conveying mechanism; 10. a buffer transfer assembly; 11. a support frame; 12. an elastic member; 13. a polarizing transmission shaft; 14. a conical driving roller; 2. a hydraulic shearing machine; 20. a machine base; 200. a guide rail; 21. a shear chamber; 22. a shear member component; 220. moving the shearing member; 2200. a movable seat; 2201. a primary V-shaped shear arm; 2202. a secondary V-shaped shear arm; 221. fixing the shearing part; 3. a billet output structure; 5. a driving cylinder; 30. a support plate; 31. a fixing member; 32. a tension spring; 33. a fixing frame; 34. a driving gear; 35. a driven gear; 36. a conical friction member; 37. a transmission member; 38. a slider; 39. fixing a guide seat; 40. and (5) driving rollers.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Referring to fig. 1 to 8, the present invention is: a350-ton hydraulic shear automatic equal-division shearing production line of a cogging line is disclosed, wherein a billet roller bed conveying mechanism 1, a hydraulic shear 2 arranged on one side of the billet roller bed conveying mechanism 1, and a billet output structure 3 arranged on the other side of the hydraulic shear 2 are conveyed to a loading and delivery assembly;
the input end of the billet roller way conveying mechanism 1 is provided with a high-temperature pressure sensor, and the output port of the billet roller way conveying mechanism is provided with a laser range finder; the high-temperature pressure sensor is arranged on a conical driving roller 14 of the billet roller way conveying mechanism 1; a probe of the laser range finder is arranged on one side of an output port of the billet roller way conveying mechanism 1 and is used for measuring the cogging line distance of the billet; the high-temperature pressure sensor electric control circuit and the input end of the laser range finder are respectively connected with the controller to form a control loop.
The method comprises the following steps that a high-temperature pressure sensor is additionally arranged to detect whether a high-temperature processed steel billet exceeds a steel billet at a temperature of 400 ℃ or is lower than the steel billet at the temperature of 400 ℃, a controller controls the high-temperature pressure sensor to detect the steel billet at the temperature of 400 ℃, a control end of the controller controls a vibration motor of a steel billet roller way conveying mechanism 1 to stop, and the steel billet cannot be normally conveyed; the laser range finder is mainly used for measuring the distance of the billet to be sheared, which needs to be sheared.
Specifically, the hydraulic shearing machine 2 includes a frame 20, a shearing chamber 21 provided on an inclined surface of a top of the frame 20, a shearing member 22 provided inside the shearing chamber 21, the shearing member 22 including a movable shearing member 220 and a fixed shearing member 221.
Specifically, a guide rail 200 is provided on the inclined surface of the top of the machine base 20, and a movable cutting member 220 is provided in the guide rail 200 in sliding fit therewith.
Specifically, the movable shearing part 220 is composed of a movable seat 2200 matched with the guide rail 200 in a sliding manner, a main V-shaped shearing arm 2201 and an auxiliary V-shaped shearing arm 2202 are arranged on the movable seat 2200, the tops of the main V-shaped shearing arm 2201 and the auxiliary V-shaped shearing arm 2202 are hinged with each other, the bottom of the auxiliary V-shaped shearing arm 2202 is fixedly connected to the movable seat 2200, and the bottom of the main V-shaped shearing arm 2201 is connected with a power rod of a driving cylinder 5.
Specifically, the fixed cutting member 221 is a rectangular cavity, and penetrates through one side surface of the cutting cavity 21, and a wedge-shaped cutting edge is arranged at a port of the fixed cutting member 221 located inside the cutting cavity 21.
Specifically, the billet roller way conveying mechanism 1 is composed of a plurality of buffer conveying assemblies 10 arranged at equal intervals, each buffer conveying assembly comprises a base 10, two support frames 11 arranged on the base 10 oppositely, elastic parts 12 arranged in the two support frames 11 respectively, a polarization transmission shaft 13 bridged between the two support frames 11, and a conical transmission roller 14 sleeved on the polarization transmission shaft 13; the polarization transmission shaft 13 is arranged coaxially with the output shaft of the vibration motor.
Specifically, the billet output structure 3 includes a fixed member 31 connected to the support plate 30, a tension spring 32 with one end connected to the fixed member 31, a fixed frame 33 connected to the other end of the tension spring 32, a driving gear 34 and a driven gear 35 inserted into the fixed frame 33, the driving gear 34 engaged with the driven gear 35, a conical friction member 36 coaxially disposed with the driven gear 35, a transmission member 37 abutted with the inner side of the conical friction member 36, a sliding member 38 engaged with the transmission member 37, a fixed guide seat 39 slidably engaged with the sliding member 38, a guide screw threaded on the end surface of the sliding member 38 connected to the fixed guide seat 39, a transmission roller 40 coaxially disposed at the end of the transmission member 37, and a transmission shaft of the driving gear 34 coaxially disposed with an output shaft of the speed reduction motor.
Specifically, the feeding consignment component comprises a steering engine and a feeding supporting arm connected with the driving end of the steering engine, and the feeding supporting arm is used for conveying steel billets to a refrigeration output roller way for natural refrigeration.
When the invention is actually used: the method comprises the steps that a billet needing to be sheared is transversely moved from one side to the other side through a transverse bracket on a billet machining and shearing production line, a high-temperature pressure sensor detects that if the temperature of the billet which is subjected to high-temperature machining exceeds 400 ℃, the billet is smoothly transmitted to a hydraulic shearing machine 2 to be sheared, and if the temperature of the billet is lower than 400 ℃, a controller controls the high-temperature pressure sensor to detect the billet lower than 400 ℃, a vibration motor of a billet roller way conveying mechanism 1 is controlled to stop by the controller, and the billet cannot be continuously transmitted; the laser range finder measures the distance to be cut by a billet to be cut and the billet is transmitted to the hydraulic shearing machine 2 through the input roller way of the billet roller way conveying mechanism 1 to be cut, the cut billet is transmitted to the feeding bracket arm of the feeding delivery assembly, and the feeding bracket arm transmits the cut billet to the cold storage output roller way to be naturally cold stored.
The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (8)
1. The 350-ton hydraulic shear automatic equal-division shearing production line of the cogging line is characterized in that a billet roller way conveying mechanism (1), a hydraulic shear (2) arranged on one side of the billet roller way conveying mechanism (1) and a billet output structure (3) arranged on the other side of the hydraulic shear (2) are conveyed to a loading and carrying assembly;
the input end of the billet roller conveying mechanism (1) is provided with a high-temperature pressure sensor, and the output port of the billet roller conveying mechanism is provided with a laser range finder; the high-temperature pressure sensor is arranged on a conical driving roller (14) of the billet roller way conveying mechanism (1); the probe of the laser range finder is arranged on one side of the output port of the billet roller conveying mechanism (1) and is used for measuring the cogging line distance of the billet; and the high-temperature pressure sensor electric control circuit and the input end of the laser range finder are respectively connected with the controller to form a control loop.
2. The line according to claim 1, wherein the hydraulic shearing machine (2) comprises a base (20), a shearing cavity (21) arranged on the top inclined surface of the base (20), a shearing member (22) arranged inside the shearing cavity (21), the shearing member (22) comprising a movable shearing member (220) and a fixed shearing member (221).
3. The line according to claim 1 or 2, wherein the machine base (20) is provided with a guide rail (200) on the top inclined surface, and the guide rail (200) is provided with the movable shearing part (220) in sliding fit with the guide rail (200).
4. The automatic equal-dividing shearing production line of 350 tons of hydraulic shears in the blank opening line according to any one of claims 1-3, characterized in that the movable shearing part (220) is composed of a movable seat (2200) in sliding fit with the guide rail (200), a main V-shaped shearing arm (2201) and a secondary V-shaped shearing arm (2202) are arranged on the movable seat (2200), the tops of the main V-shaped shearing arm (2201) and the secondary V-shaped shearing arm (2202) are hinged with each other, the bottom of the secondary V-shaped shearing arm (2202) is fixedly connected to the movable seat (2200), and the bottom of the main V-shaped shearing arm (2201) is connected with a power rod of a driving cylinder (5).
5. A cogging line 350-ton hydraulic shear automatic equally dividing production line according to any of claims 1-4, characterized in that said fixed shearing member (221) is a rectangular cavity, which penetrates through one side of said shearing cavity (21), and a wedge-shaped shearing blade is arranged at the end of said fixed shearing member (221) located inside said shearing cavity (21).
6. The 350-ton hydraulic shear automatic equal-division production line according to any one of claims 1 to 5, wherein the billet roller conveyor (1) is composed of a plurality of buffer conveying assemblies (10) arranged at equal intervals, each buffer conveying assembly comprises a base (10), two support frames (11) oppositely arranged on the base (10), elastic parts (12) respectively arranged inside the two support frames (11), a polarization transmission shaft (13) bridged between the two support frames (11), and a conical transmission roller (14) sleeved on the polarization transmission shaft (13); the polarization transmission shaft (13) is coaxial with the output shaft of the vibration motor.
7. The line for automatically bisecting and shearing a billet according to 350 tons of hydraulic shears as claimed in any one of claims 1 to 6, wherein said billet discharging structure (3) comprises a fixed member (31) connected to a supporting plate (30), a tension spring (32) having one end connected to said fixed member (31), a fixed frame (33) connected to the other end of said tension spring (32), a driving gear (34) and a driven gear (35) inserted into said fixed frame (33), said driving gear (34) being engaged with said driven gear (35), a conical friction member (36) coaxially disposed with said driven gear (35), a transmission member (37) abutting against an inner side surface of said conical friction member (36), a sliding member (38) engaged with said transmission member (37), a fixed guide seat (39) slidably engaged with said sliding member (38), a guide screw on an end surface of said sliding member (38) being threadedly connected to said fixed guide seat (39), the end of the transmission piece (37) is provided with a transmission roller (40) coaxial with the transmission piece, and a transmission shaft of the driving gear (34) is coaxial with an output shaft of the speed reducing motor.
8. The cogging line 350-ton hydraulic shear automatic equally-dividing production line according to any one of claims 1 to 7, wherein the loading and hauling assembly comprises a steering engine and a loading bracket arm connected with a driving end of the steering engine, and the loading bracket arm is used for conveying steel billets to a cold storage output roller bed for natural cold storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910855280.7A CN110640206B (en) | 2019-09-10 | 2019-09-10 | 350-ton hydraulic shear automatic equal-dividing shearing production line for cogging line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910855280.7A CN110640206B (en) | 2019-09-10 | 2019-09-10 | 350-ton hydraulic shear automatic equal-dividing shearing production line for cogging line |
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| CN110640206A true CN110640206A (en) | 2020-01-03 |
| CN110640206B CN110640206B (en) | 2021-08-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111176218A (en) * | 2020-01-04 | 2020-05-19 | 太原理工大学 | Rolling shear quality monitoring system and method based on laser and visual detection |
| CN112296440A (en) * | 2020-10-27 | 2021-02-02 | 哈尔滨商业大学 | Intelligent cutting robot based on computer |
| CN112872235A (en) * | 2020-10-28 | 2021-06-01 | 江苏省苏中建设集团股份有限公司 | Reinforcing bar device of flare-outing for assembly type building |
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| US4923527A (en) * | 1989-03-14 | 1990-05-08 | Messer Griesheim Industries, Inc. | Apparatus and method for slag-free cutting of billets and the like |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111176218A (en) * | 2020-01-04 | 2020-05-19 | 太原理工大学 | Rolling shear quality monitoring system and method based on laser and visual detection |
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| CN112872235A (en) * | 2020-10-28 | 2021-06-01 | 江苏省苏中建设集团股份有限公司 | Reinforcing bar device of flare-outing for assembly type building |
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| Publication number | Publication date |
|---|---|
| CN110640206B (en) | 2021-08-24 |
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