CN110465563B - A steel structure part bending auxiliary device and use method thereof - Google Patents
A steel structure part bending auxiliary device and use method thereof Download PDFInfo
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- CN110465563B CN110465563B CN201910763714.0A CN201910763714A CN110465563B CN 110465563 B CN110465563 B CN 110465563B CN 201910763714 A CN201910763714 A CN 201910763714A CN 110465563 B CN110465563 B CN 110465563B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 70
- 239000010959 steel Substances 0.000 title claims abstract description 70
- 238000005452 bending Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000003825 pressing Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 3
- 239000010953 base metal Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
本发明涉及一种钢结构零件折弯辅助装置及其使用方法，包括底座和压头机构，底座上设辊轴系统，辊轴系统包括固定辊和移动辊；移动辊支撑架底部安装移动滑轨，移动滑轨通过液压推拉系统控制移动辊移动，实现辊间距可调，压头机构设于底座之上、固定辊与移动辊之间，包括压头基架和安装在压头基架底部的压头；对支设于固定辊和移动辊之上的钢结构零件施加竖向力。本发明钢结构零件通过辊轴与压头配合，完成钢结构制作过程中各类非平面钢结构零件的折弯工作；结构简单，尺寸小，能动性大，对空间要求低，可应用于狭窄施工现场；制作简单，可就地取材自制，也可工厂批量加工定制；可根据施工需求灵活调节辊间距，满足钢结构零件多样化的需求。
The present invention relates to a steel structure part bending auxiliary device and a method of using the device, including a base and a pressure head mechanism, a roller system is arranged on the base, and the roller system includes a fixed roller and a movable roller; a movable slide rail is installed at the bottom of the movable roller support frame, and the movable slide rail controls the movement of the movable roller through a hydraulic push-pull system to achieve adjustable roller spacing, and the pressure head mechanism is arranged on the base, between the fixed roller and the movable roller, and includes a pressure head base frame and a pressure head installed at the bottom of the pressure head base frame; a vertical force is applied to the steel structure parts supported on the fixed roller and the movable roller. The steel structure parts of the present invention cooperate with the roller shaft and the pressure head to complete the bending work of various non-planar steel structure parts in the steel structure manufacturing process; the structure is simple, the size is small, the activity is large, the space requirement is low, and it can be applied to narrow construction sites; the production is simple, and it can be made by hand using local materials, or it can be customized by batch processing in factories; the roller spacing can be flexibly adjusted according to construction requirements to meet the diversified needs of steel structure parts.
Description
Technical Field
The invention relates to the technical field of steel knot bending, in particular to a steel structure part bending auxiliary device and a use method thereof.
Background
In the field of steel structures, bent steel structure parts are widely distributed in various variable-section steel columns, variable-section steel beams and special-shaped components.
The traditional steel structure part bending method comprises a heating press bending method and a fixed mould cold bending method. The heating and bending efficiency is low, the energy consumption is high, toxic and harmful waste gas is easy to generate, the influence on the workshop environment is large, and the performance of the base metal is more adversely affected after high-temperature heating; the device used for fixing the mould cold bending method is characterized in that all parts are fixed, a parent metal is easy to scratch in the bending process, the stress generated in the process is large, the rebound of the material is easy to cause, and a certain safety risk exists.
In addition, the distance between the support rollers of the existing bending equipment is fixed, flexibility is poor, and applicability is poor for some steel structure parts with special size requirements. Therefore, a steel structure part bending device with convenience, high efficiency, safety and wide application range is needed.
Disclosure of Invention
The invention aims to provide a steel structure part bending auxiliary device and a use method thereof, and the steel structure part bending auxiliary device is used for completing bending work of various non-planar steel structure parts in the steel structure manufacturing process by matching a roll shaft and a press head, so that the problems of low heating bending efficiency, high energy consumption, generation of toxic and harmful waste gas and more adverse effects on the performance of a base material in the prior art, and the problems of easy scratch of the base material, high stress generated in the process, easy material rebound and safety risk of the base material in the fixing device used in the cold bending method of a fixing mould are solved.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
The utility model provides a steel construction part auxiliary device that bends which characterized in that: comprises a base and a pressure head mechanism; the base is arranged on the supporting surface and comprises a base and a roll shaft system arranged on the base; the roll shaft system comprises a fixed roll and a movable roll which are arranged on the base in parallel;
the fixed roller comprises a first roller shaft and a first supporting frame, the first supporting frame comprises two supporting plates which are oppositely arranged, the bottoms of the supporting plates are fixed on the base, the tops of the supporting plates are provided with reserved holes, bearings are arranged in the reserved holes, and two ends of the first roller shaft are rotatably connected to the first supporting frame through the bearings;
The movable roller comprises a second roller shaft, a second supporting frame, two movable sliding rails and a hydraulic push-pull system, wherein the two movable sliding rails are arranged on the base in parallel, and the extending direction of the movable sliding rails is perpendicular to the axis of the second roller shaft; the second support frame also comprises two support plates which are oppositely arranged, the support plates are correspondingly arranged on the movable slide rail, the bottoms of the support plates are provided with female grooves which are matched with the movable slide rail, the tops of the support plates are provided with preformed holes, bearings are arranged in the preformed holes, and two ends of the second roll shaft are rotatably connected to the second support frame through the bearings; the hydraulic push-pull system is connected with the second supporting frame and controls the movement and the fixation of the second supporting frame;
The pressure head mechanism is arranged on the base and between the fixed roller and the movable roller and comprises a pressure head base frame and a pressure head arranged at the bottom of the pressure head base frame; the pressure head base frame is connected with a press; the pressure head is vertically arranged, and vertical force is applied to steel structure parts supported on the fixed roller and the movable roller.
The hydraulic push-pull system comprises a hydraulic cylinder, a hydraulic cylinder controller and an oil pump; the two groups of hydraulic cylinders are correspondingly arranged on one side, far away from the first support frame, of the two support plates of the second support frame, the telescopic rods of the hydraulic cylinders are fixedly connected with the support plates, and the tail parts of the telescopic rods are fixed on the base through base connecting pieces of the hydraulic cylinders; the hydraulic cylinder controller and the oil pump are arranged outside the base, the oil pump is connected with the two hydraulic cylinders through oil pipes respectively, and the hydraulic cylinder controller is connected with the oil pump through signal cables.
Further, the backup pad of first support frame, second support frame and pneumatic cylinder pedestal connection spare is steel set square, the top of pneumatic cylinder pedestal connection spare is articulated with the pneumatic cylinder afterbody, and the bottom welded fastening is on the base.
Further, the first support frame, the second support frame, the movable slide rail, the hydraulic cylinder and the hydraulic cylinder base connecting piece on the same side of the base are positioned on the same vertical plane.
Further, the pressure head base frame is T-shaped and comprises a horizontal fixing plate at the top and a vertical connecting plate at the bottom, and rabbets are arranged at intervals at the bottom of the vertical connecting plate; the pressure head is a vertical plate, the top of the pressure head is provided with bulges at intervals, and the bulges are fixedly connected with the matched rabbets through bolts which are arranged in a penetrating way on the side surfaces.
Further, the pressure head is a wide pressure head, a medium-wide pressure head or a narrow pressure head; the wide pressure head is formed by widening the bottom of the middle wide pressure head, the width range is 30 mm-60 mm, the narrow pressure head is formed by symmetrically cutting the bottom of the middle wide pressure head, and the width range is 10 mm-30 mm.
Further, the bottom end part of the pressure head is a round head.
Furthermore, the first roll shaft and the second roll shaft have the same size and specification, and the planes of the axes of the first roll shaft and the second roll shaft are parallel to the base.
Further, the outer surfaces of the first roll shaft and the second roll shaft are provided with wedge-shaped grooves along the length direction, and wedge-shaped anti-slip rubber strips are arranged in the wedge-shaped grooves and have the function of preventing steel structure parts from slipping and surface scratches.
In addition, the invention also provides a using method of the steel structure part bending auxiliary device, which comprises the following steps:
Step one, positioning steel structure parts: placing the steel structure part to be bent above the two roll shafts and below a pressure head mechanism, wherein the pressure head mechanism is arranged on a press rod of the press;
step two, determining the required distance between the two roll shafts: determining the required distance between the two roll shafts according to the size and bending requirements of the steel structure part;
Starting a hydraulic push-pull system, driving the movable roller to slide along the movable slide rail through the expansion and contraction of the telescopic rod of the hydraulic cylinder until the distance from the fixed roller reaches the width required by the angle;
Step three, positioning a pressure head mechanism: the movable pressure head mechanism is positioned at the middle position right above the movable roller and the fixed roller;
Step five, starting the press machine: starting a press machine, wherein the press machine drives a pressure head to press the steel structure part, so that the steel structure part generates plastic bending deformation under the restraint of the roll shafts, and in the whole process, the first roll shaft and the second roll shaft do not slide relatively with the steel structure part;
Step six, closing the press, packing up a press rod of the press, and taking out the bent steel structure part;
and step seven, repeating the step one to the step six until all the steel structure parts are bent.
Compared with the prior art, the invention has the technical advantages that:
1. The steel structure part is matched with the pressing head through the roll shaft, so that bending work of various non-planar steel structure parts in the steel structure manufacturing process is completed, the problems that the existing heating and bending efficiency is low, the energy consumption is high, toxic and harmful waste gas is generated, and the performance of a base metal is more adversely affected are effectively solved, and the problems that all parts of a device used for fixing a mould cold bending method are fixed, the base metal is easily scratched in the bending process, the stress generated in the process is large, material rebound is easily caused, and the safety risk exists are effectively solved;
2. The bending auxiliary device has the advantages of simple structure, ingenious design, small size, high mobility and low space requirement, and can be applied to narrow construction sites; the preparation is simple, the materials can be locally obtained for self-making, and batch processing and customization can be realized in factories;
3. the fixed roller is used as a fixed end to provide counter force for bending the steel structure part, the bottom of the movable roller frame body is provided with a female groove, the female groove is cohesive with the movable sliding rail to provide counter force on the other side of the steel structure part during bending, the roller spacing can be flexibly adjusted according to construction requirements, and the requirement of diversification of the steel structure part is met;
4. The rubber strips are embedded on the roll shafts, so that the friction force between the parts and the roll shafts can be effectively increased, and the slipping of the parts is prevented; certain buffering can be provided, the acting force between the part and the roll shaft is reduced, and the parent metal is prevented from being scratched;
5. The hydraulic device is used for controlling the distance between the roll shafts, so that the labor intensity is reduced, and the operation precision is improved.
Drawings
The foregoing and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative only and not limiting of the invention, wherein:
fig. 1 is a schematic diagram of the whole structure of the steel structure part bending auxiliary device according to the present invention.
FIG. 2 is a schematic view of a base according to the present invention;
FIG. 3 is a schematic view of the cooperation of the roller and the support frame;
FIG. 4 is a schematic diagram illustrating the assembly of the second support frame and the movable rail;
FIG. 5 is a schematic view showing the surface structure of the first roller or the second roller;
FIG. 6 is a schematic view of a ram mechanism according to the present invention;
FIG. 7 is a front view of FIG. 6;
FIG. 8 is a schematic perspective view of a wide ram according to the present invention;
fig. 9 is a front view of fig. 8;
FIG. 10 is a schematic perspective view of a medium-width ram according to the present invention;
fig. 11 is a front view of fig. 10;
FIG. 12 is a schematic perspective view of a narrow ram according to the present invention;
Fig. 13 is a front view of fig. 12;
Reference numerals: 1-base, 2-fixed roller, 2.1-first roller, 2.2-first support frame, 3-movable roller, 3.1-second roller, 3.2-second support frame, 3.3-movable slide rail, 3.4-hydraulic push-pull system, 3.41-hydraulic cylinder, 3.42-hydraulic cylinder controller, 3.43-oil pump, 3.44-hydraulic cylinder base connector, 3.45-oil pipe, 3.46-signal cable, 4-bearing, 5-pressure head base frame, 6-pressure head, 6.1-wide pressure head, 6.2-medium-wide pressure head, 6.3-narrow pressure head, 7-bolt, 8-steel structural part, 9-antiskid rubber strip.
Detailed Description
Hereinafter, embodiments of the steel structural part bending assisting apparatus and the method of using the same of the present invention will be described with reference to the accompanying drawings.
The examples described herein are specific embodiments of the present application, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the application to the embodiments and scope of the application. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification, including those adopting any obvious substitutions and modifications to the embodiments described herein.
The drawings in the present specification are schematic views, which assist in explaining the concept of the present invention, and schematically show the shapes of the respective parts and their interrelationships. Note that, in order to clearly show the structures of the components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention. Referring to fig. 1, a steel structural part bending auxiliary device is characterized in that: comprises a base and a pressure head mechanism; the base is arranged on the supporting surface and comprises a base 1 and a roll shaft system arranged on the base 1; the roller system comprises a fixed roller 2 and a movable roller 3 which are arranged on a base 1 in parallel.
The fixed roller 2 is used as a fixed end to provide a counterforce for bending the steel structure part 8, and comprises a first roller shaft 2.1 and a first support frame 2.2, wherein the first support frame 2.2 comprises two support plates which are oppositely arranged, the bottom of each support plate is fixed on the base 1, a reserved hole is formed in the top of each support plate, a bearing 4 is arranged in each reserved hole, and as shown in fig. 3, two ends of the first roller shaft 2.1 are rotationally connected to the first support frame 2.2 through the bearing 4; the bearing 4 can reduce resistance and ensure the free rotation of the roll shaft.
The movable roller 3 comprises a second roller shaft 3.1, a second supporting frame 3.2, two movable slide rails 3.3 and a hydraulic push-pull system 3.4, wherein the two movable slide rails 3.3 are arranged on the base 1 in parallel, and the extending direction of the movable slide rails is vertical to the axis of the second roller shaft 3.1; the second supporting frame 3.2 also comprises two supporting plates which are oppositely arranged, the supporting plates are correspondingly arranged on the movable sliding rail 3.3, as shown in fig. 4, the bottoms of the supporting plates are provided with female grooves which are matched with the movable sliding rail 3.3, the female grooves are in locking engagement with the movable sliding rail to provide the counterforce on the other side when the steel structure part is bent, the tops of the supporting plates are provided with preformed holes, bearings 4 are arranged in the preformed holes, and two ends of the second roll shaft 3.1 are rotationally connected to the second supporting frame 3.2 through the bearings 4; the hydraulic push-pull system 3.4 is connected with the second supporting frame 3.2 and controls the movement and the fixation of the second supporting frame.
The hydraulic push-pull system 3.4 comprises a hydraulic cylinder 3.41, a hydraulic cylinder controller 3.42 and an oil pump 3.43; the two groups of hydraulic cylinders 3.41 are correspondingly arranged on one side, far away from the first support frame 2.2, of the two support plates of the second support frame 3.2, the telescopic rods of the hydraulic cylinders 3.41 are fixedly connected with the support plates, and the tail parts of the telescopic rods are fixed on the base 1 through hydraulic cylinder base connecting pieces 3.44; the hydraulic cylinder controller 3.42 and the oil pump 3.43 are arranged outside the base 1, the oil pump 3.43 is respectively connected with the two hydraulic cylinders 3.41 through oil pipes 3.45, and the hydraulic cylinder controller 3.42 is connected with the oil pump 3.43 through signal cables 3.46. The hydraulic cylinder controller can control the hydraulic cylinder to stretch out and draw back, and the push-pull slidable roll shaft support frame moves forward or backward on the roll shaft support frame guide rail so as to change the interval between two groups of roll shaft support frames and adapt to the requirement of bending angles of different steel structure parts on the interval.
As shown in fig. 5, the outer surfaces of the first roll shaft 2.1 and the second roll shaft 3.1 are provided with wedge-shaped grooves along the length direction, and wedge-shaped anti-slip rubber strips 9 are arranged in the wedge-shaped grooves. The dimensions of the first roll shaft 2.1 and the second roll shaft 3.1 are the same, and the plane where the axes of the two are located is parallel to the base 1.
As shown in fig. 6, the pressure head mechanism is arranged on the base and between the fixed roller 2 and the movable roller 3, and comprises a pressure head base frame 5 and a pressure head 6 arranged at the bottom of the pressure head base frame 5; the pressure head base frame 5 is connected with a press; the ram 6 is arranged vertically, exerting a vertical force on the steel structural part 8 supported on the fixed roller 2 and the mobile roller 3. The pressure head base frame 5 is T-shaped and comprises a horizontal fixing plate 5.1 at the top and a vertical connecting plate 5.2 at the bottom, and rabbets 5.3 are arranged at the bottom of the vertical connecting plate 5.2 at intervals; the pressing head 6 is a vertical plate, the top of the pressing head is provided with protrusions 6.4 at intervals, as shown in fig. 7, the protrusions 6.4 are fixedly connected with the tongue-and-groove 5.3 through bolts 7 which are arranged in a penetrating way on the side face after being matched with the tongue-and-groove, and when in use, the required pressing head is placed in the tongue-and-groove of the pressing head base frame, and the pressing head is inserted into the pressing head base frame and the bolt holes on the side face of the pressing head by using the bolts, so that the pressing head is connected with the pressing head base frame. The pressure head 6 is a wide pressure head 6.1, a medium-wide pressure head 6.2 or a narrow pressure head 6.3; as shown in fig. 8 and 9, the wide pressure head 6.1 is formed by widening the bottom of the middle wide pressure head 6.2, the width range is 30 mm-60 mm, as shown in fig. 10 and 11, the structure of the middle wide pressure head 6.2 is schematically shown in fig. 12 and 13, the narrow pressure head 6.3 is formed by symmetrically cutting the bottom of the middle wide pressure head 6.2, and the width range is 10 mm-30 mm. The bottom end of the pressure head 6 is a round head.
In addition, the first support frame 2.2, the second support frame 3.2, the movable slide rail 3.3, the hydraulic cylinder 3.41 and the hydraulic cylinder base connector 3.44 on the same side of the base 1 are positioned on the same vertical plane. The support plates of the first support frame 2.2, the second support frame 3.2 and the hydraulic cylinder base connecting piece 3.44 are steel triangular plates, the top of the hydraulic cylinder base connecting piece 3.44 is hinged with the tail of the hydraulic cylinder 3.41, and the bottom end of the hydraulic cylinder base connecting piece is welded and fixed on the base 1.
When the steel structure part bending auxiliary device is used, the method comprises the following steps of:
Step one, positioning a steel structure part 8: placing the steel structure part 8 to be bent above the two roll shafts and below the pressure head mechanism, wherein the pressure head mechanism is arranged on a press rod of the press;
step two, determining the required distance between the two roll shafts: determining the required distance between the two roll shafts according to the size and bending requirements of the steel structure part 8;
Starting a hydraulic push-pull system 3.4, driving a movable roller 3 to slide along a movable sliding rail 3.3 through the expansion and contraction of a telescopic rod of a hydraulic cylinder 3.41 until the distance from the fixed roller 2 reaches the width required by the angle, and keeping a hydraulic cylinder controller on, wherein the output pressure is kept at a fixed value;
Step three, positioning a pressure head mechanism: the pressure head mechanism is moved to be positioned at the middle position right above the moving roller 3 and the fixed roller 2;
Step five, starting the press machine: starting a press machine, wherein the press machine drives a pressure head to press the steel structure part 8, so that the steel structure part 8 generates plastic bending deformation under the restraint of a roll shaft, and in the whole process, the first roll shaft 2.1, the second roll shaft 3.1 and the steel structure part 8 do not slide relatively;
step six, closing the press, retracting a press rod of the press, and taking out the bent steel structure part 8;
and step seven, repeating the step one to the step six until all the steel structural parts 8 are bent.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
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| CN201910763714.0A CN110465563B (en) | 2019-08-19 | 2019-08-19 | A steel structure part bending auxiliary device and use method thereof |
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| CN110524856A (en) * | 2019-09-28 | 2019-12-03 | 江西德新达智能机械有限公司 | A film blowing machine cold water tank nip roll and gap adjustment method using cold water to adjust the pitch |
| CN115415374A (en) * | 2022-09-22 | 2022-12-02 | 佛山市阿玛达机械科技有限公司 | Cold-bending forming machine capable of adjusting roller spacing and working method thereof |
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| CN205324408U (en) * | 2016-01-18 | 2016-06-22 | 平湖市华海造船有限公司 | Bending machine |
| CN210475077U (en) * | 2019-08-19 | 2020-05-08 | 中建二局安装工程有限公司 | Steel structure part auxiliary device that bends |
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| CN1833989A (en) * | 2006-04-19 | 2006-09-20 | 崔波 | Special load/unload lifter for bulk-cargo |
| CN202824283U (en) * | 2012-08-10 | 2013-03-27 | 河南神州重型封头有限公司 | Plate bending device with forked tail structure |
| CN103551532B (en) * | 2013-10-30 | 2017-01-11 | 宝山钢铁股份有限公司 | Thin-strip continuous casting machine and working method thereof |
| CN204142502U (en) * | 2014-11-05 | 2015-02-04 | 河南省机械设计研究院有限公司 | Safety unit of tractor intensity test bench |
| CN205324409U (en) * | 2016-01-18 | 2016-06-22 | 平湖市华海造船有限公司 | Bending machine |
| CN205926690U (en) * | 2016-07-13 | 2017-02-08 | 合肥星火工贸有限公司 | Steel plate bending machine |
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| CN206153327U (en) * | 2016-11-17 | 2017-05-10 | 中冶建工集团有限公司 | Steel sheet bending device |
| CN107175269A (en) * | 2017-07-28 | 2017-09-19 | 芜湖富创新型建材有限公司 | A kind of automatic plate bending machine that tank wall manufacture is loaded for aerated blocks |
| CN107716627A (en) * | 2017-10-26 | 2018-02-23 | 天津天重中直科技工程有限公司 | A kind of large-scale pressure bending system |
| CN108971279A (en) * | 2018-07-02 | 2018-12-11 | 上海建工集团股份有限公司 | A kind of steel plate bending device and method |
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| CN205324408U (en) * | 2016-01-18 | 2016-06-22 | 平湖市华海造船有限公司 | Bending machine |
| CN210475077U (en) * | 2019-08-19 | 2020-05-08 | 中建二局安装工程有限公司 | Steel structure part auxiliary device that bends |
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