CN219483860U - Hydraulic hard pipe bending equipment - Google Patents
Hydraulic hard pipe bending equipment Download PDFInfo
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- CN219483860U CN219483860U CN202320740789.9U CN202320740789U CN219483860U CN 219483860 U CN219483860 U CN 219483860U CN 202320740789 U CN202320740789 U CN 202320740789U CN 219483860 U CN219483860 U CN 219483860U
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- bending wheel
- workbench
- hydraulic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The utility model relates to the technical field of pipeline bending, in particular to hydraulic hard pipe bending equipment, which comprises a workbench, and further comprises a bending mechanism and a limiting mechanism, wherein the bending mechanism comprises a rotating disc, a first bending wheel, a second bending wheel, a third bending wheel, a rotating assembly and a fixing assembly, the rotating disc rotates above the workbench, the third bending wheel, the second bending wheel and the first bending wheel are sequentially arranged above the rotating disc, the diameters of the third bending wheel, the second bending wheel and the first bending wheel are sequentially decreased, the limiting mechanism comprises a limiting seat and a driving assembly, and the third bending wheel, the second bending wheel and the first bending wheel with the diameters decreasing in sequence are arranged.
Description
Technical Field
The utility model relates to the technical field of pipeline bending, in particular to hydraulic hard pipe bending equipment.
Background
In engineering construction, the direction of pipeline laying is often required to be changed, so that in order to ensure the continuity of the pipeline, a hard pipe bending device is required to bend the pipeline.
The Chinese patent publication No. CN217393395U discloses a manual pipe bending device, which comprises a fixed platform and a limiting column, wherein one side of the fixed platform, which is provided with the limiting column, is also provided with a fixed clamping fixture, a gap for accommodating a bent pipe fitting is arranged between the limiting column and the fixed clamping fixture, the manual pipe bending device also comprises a handle taking the central line of the fixed clamping fixture as a rotating shaft, a movable clamping fixture matched with the fixed clamping fixture for accommodating the bent pipe fitting is arranged on the handle, the pipe fitting is inserted between the movable clamping fixture and the fixed clamping fixture, passes through the space between the fixed clamping fixture and the limiting column, and a small-pipe-diameter bent pipe with a corresponding angle can be obtained by rotating the handle to a corresponding angle.
The manual pipe bending device can realize pipe bending work of a pipeline, but because the diameter of the fixed clamping fixture is fixed, the pipeline can only be bent into radian with a specific diameter in pipe bending work, the bending size of the pipeline cannot be changed according to needs, when the diameter of a bending part needs to be changed, pipe bending equipment with different types needs to be replaced, the production cost is greatly increased, the use requirement cannot be met, and aiming at the problem, the hydraulic hard pipe bending device is provided.
Disclosure of Invention
The utility model aims to provide hydraulic hard pipe bending equipment so as to solve the problem that the bending radian of a pipeline cannot be changed according to requirements in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the hydraulic hard pipe bending equipment comprises a workbench, a bending mechanism and a limiting mechanism;
the bending mechanism comprises a rotating disc, a first bending wheel, a second bending wheel, a third bending wheel, a rotating assembly and a fixing assembly, wherein the rotating disc rotates above the workbench, the third bending wheel, the second bending wheel and the first bending wheel are sequentially arranged above the rotating disc, the diameters of the third bending wheel, the second bending wheel and the first bending wheel are sequentially decreased, the fixing assembly is arranged on one side of the rotating disc and used for fixing a pipeline, and the rotating assembly is positioned inside the workbench and used for driving the rotating disc to rotate;
the limiting mechanism comprises a limiting seat and a driving assembly, wherein the limiting seat is used for limiting the pipeline, and the driving assembly is fixed at the top end of the workbench and used for driving the limiting seat to move.
As a further scheme of the utility model: the top of rolling disc is fixed with multiunit double-screw bolt, third bending wheel, second bending wheel, first bending wheel cup joint in proper order on the double-screw bolt, the top of first bending wheel is equipped with the locating plate, the locating plate cup joint on the double-screw bolt just the top of locating plate is equipped with multiunit nut, the nut cup joint in on the double-screw bolt and with double-screw bolt threaded connection.
As a further scheme of the utility model: the fixed component comprises a fixed frame, a fixed block, a lifting piece and a moving piece;
the fixed frame is fixed on the surfaces of the rotating disc and the positioning plate, the fixed block is located in the middle of the fixed frame, the lifting part is fixed in the fixed frame and used for driving the fixed block to lift, and the moving part is arranged on one side of the lifting part and used for driving the fixed block to move.
As a further scheme of the utility model: the lifting piece comprises a motor, a screw rod, a sliding block and a guide rod;
the screw rod is positioned in the middle of the fixing frame and is rotationally connected with the fixing frame, the motor is arranged at the top end of the fixing frame, and the output end of the motor is fixedly connected with the end part of the screw rod;
the sliding block is sleeved on the surface of the screw rod and is in threaded connection with the screw rod;
the guide rods are arranged on two groups and symmetrically arranged on two sides of the sliding block, the guide rods penetrate through the sliding block, and the sliding block is connected with the guide rods in a sliding mode.
As a further scheme of the utility model: the moving part comprises an electric push rod, the fixed end of the electric push rod is fixedly connected with the sliding block, and the output end of the electric push rod is fixedly connected with the fixed block.
As a further scheme of the utility model: the rotating assembly comprises a second hydraulic rod, a rack, a gear and a guide rail;
the bottom end of the rotating disc penetrates through the workbench and stretches into the workbench, and the gear is fixed on the surface of the rotating disc and is positioned in the workbench;
the guide rail is fixed on the inner wall of the inner cavity of the workbench, the rack slides in the guide rail, the rack is meshed with the gear, the second hydraulic rod is fixed on one side of the workbench, and the output end of the second hydraulic rod is fixedly connected with the rack.
As a further scheme of the utility model: the driving assembly comprises a fixed seat and a first hydraulic rod;
the fixing seat is fixed on the surface of the workbench, the first hydraulic rod is located above the fixing seat, the fixed end of the first hydraulic rod is fixedly connected with the fixing seat, and the output end of the first hydraulic rod is fixedly connected with the limiting seat.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the hydraulic hard pipe bending equipment, the third bending wheel, the second bending wheel and the first bending wheel with the diameters decreasing in sequence are arranged, and when a hard pipe is bent, the bending wheels with different diameters can be selected according to the needs, so that the hard pipe can be bent into radians with different diameters, the bending size is changed, equipment with different sizes is not required to be replaced, the production cost is greatly reduced, the use requirement is met, and the defects that the conventional pipe bending equipment can only bend the pipe into the radians with specific diameters in operation, the bending size of the pipe cannot be changed according to the needs, and the pipe bending equipment with different types is required to be replaced when the diameter of a bending part is required to be changed are overcome.
2. According to the hydraulic hard pipe bending equipment, the stud, the nut and the positioning plate are arranged, so that the third bending wheel, the second bending wheel and the first bending wheel can be conveniently and sequentially installed and detached, when one group of bending wheels is damaged, the third bending wheel, the second bending wheel and the first bending wheel can be detached and replaced, the whole bending equipment does not need to be replaced, the service life of the bending equipment is prolonged, and the cost is further reduced.
3. According to the hydraulic hard pipe bending equipment, the position of the fixed block can be adjusted through the fixed block, the lifting piece and the moving piece, so that the fixed block can correspond to bending wheels with different diameters, the hard pipe can be fixed, the hard pipe can rotate around the bending wheels, bending of the hard pipe is achieved, and the bending efficiency is high.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic view of a part of the structure of the present utility model.
Fig. 3 is an enlarged schematic view of the portion a of fig. 2 according to the present utility model.
Fig. 4 is a schematic structural view of a rotary assembly according to the present utility model.
Fig. 5 is a schematic diagram of a disassembling structure of a rotating disc and a positioning plate in the utility model.
Fig. 6 is a schematic structural view of a limiting mechanism in the present utility model.
Wherein: 11. a work table; 12. a rotating disc; 13. a positioning plate; 14. a first bending wheel; 15. a second bending wheel; 16. a third bending wheel; 17. a fixing frame; 18. a motor; 19. a screw rod; 20. a slide block; 21. a guide rod; 22. an electric push rod; 23. a fixed block; 24. a fixing seat; 25. a first hydraulic lever; 26. a limit seat; 27. a second hydraulic lever; 28. a rack; 29. a gear; 30. avoidance holes; 31. a guide rail; 32. a stud; 33. a nut; 34. a limit groove; 35. graduation marks.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
The present utility model provides the following preferred embodiments:
1-6, a hydraulic hard pipe bending device comprises a workbench 11, a bending mechanism and a limiting mechanism;
the bending mechanism comprises a rotating disc 12, a first bending wheel 14, a second bending wheel 15, a third bending wheel 16, a rotating component and a fixing component, wherein the rotating disc 12 rotates above the workbench 11, the third bending wheel 16, the second bending wheel 15 and the first bending wheel 14 are sequentially arranged above the rotating disc 12, the diameters of the third bending wheel 16, the second bending wheel 15 and the first bending wheel 14 are sequentially decreased, and particularly, bending grooves for storing pipelines are formed in the surfaces of the third bending wheel 16, the second bending wheel 15 and the first bending wheel 14, so that the pipelines can rotate around the bending grooves to bend hard pipes, the fixing component is arranged on one side of the rotating disc 12 and is positioned in the workbench 11 and used for driving the rotating disc 12 to rotate;
by arranging the third bending wheel 16, the second bending wheel 15 and the first bending wheel 14 with diameters decreasing in sequence, when the hard pipe is bent, the bending wheels with different diameters can be selected according to the needs, so that the hard pipe can be bent into radians with different diameters, the bending size is changed, equipment with different sizes is not required to be replaced, the production cost is greatly reduced, and the use requirement is met;
the limiting mechanism comprises a limiting seat 26 and a driving assembly, the limiting seat 26 is used for limiting a pipeline, the driving assembly is fixed at the top end of the workbench 11 and used for driving the limiting seat 26 to move, and here, one side of the limiting seat 26, which is close to the rotating disc 12, is provided with a limiting groove 34 matched with the bending grooves on the third bending wheel 16, the second bending wheel 15 and the first bending wheel 14, and the limiting groove is used for limiting the pipeline, so that the situation that the position of the pipeline is deviated and the bending effect is affected when the pipeline is bent is avoided;
when the pipeline is required to be bent, the pipeline is placed in a bending groove on the side face of a bending wheel with a proper diameter, then the pipeline is fixed by using a fixing component, so that the pipeline can be fixed in the bending groove, then the limiting seat 26 is driven by a driving component to move, the limiting groove 34 on the limiting seat 26 can move to one side of the pipeline, limiting of the pipeline is realized, the rotating component is used for driving the rotating disc 12 to rotate, the turning wheel is driven to rotate, the pipeline can rotate around the bending wheel, bending of a hard pipe is realized, and the bending efficiency is high
As shown in fig. 5, a plurality of groups of studs 32 are fixed at the top end of the rotating disc 12, the third bending wheel 16, the second bending wheel 15 and the first bending wheel 14 are sequentially sleeved on the studs 32, a positioning plate 13 is arranged at the top end of the first bending wheel 14, the positioning plate 13 is sleeved on the studs 32, specifically, through holes which are convenient for the studs 32 to pass are formed in the third bending wheel 16, the second bending wheel 15, the first bending wheel 14 and the positioning plate 13, a plurality of groups of nuts 33 are arranged above the positioning plate 13, and the nuts 33 are sleeved on the studs 32 and are in threaded connection with the studs 32;
when the installation is carried out, the third bending wheel 16, the second bending wheel 15, the first bending wheel 14 and the positioning plate 13 are sequentially arranged above the rotating disc 12, the stud 32 passes through the perforation, and then the nut 33 is screwed, so that the rotating disc 12, the positioning plate 13, the first bending wheel 14, the second bending wheel 15 and the third bending wheel 16 can be fixed, the installation can be completed, the third bending wheel 16, the second bending wheel 15 and the first bending wheel 14 can be conveniently and sequentially installed and disassembled, when one group of bending wheels is damaged, the third bending wheel 16, the second bending wheel 15 and the first bending wheel 14 can be disassembled and replaced without replacing the whole bending equipment, the service life of the bending equipment is prolonged, and the cost is further reduced.
As shown in fig. 2-3, the fixing assembly comprises a fixing frame 17, a fixing block 23, a lifting member and a moving member;
the fixing frame 17 is fixed on the surfaces of the rotating disc 12 and the positioning plate 13, specifically, two ends of the fixing frame 17 are detachably connected with the rotating disc 12 and the positioning plate 13 through bolts respectively, so that the fixing frame 17 is convenient to detach, and further the subsequent installation and detachment of the third bending wheel 16, the second bending wheel 15 and the first bending wheel 14 are convenient, the fixing block 23 is positioned in the middle of the fixing frame 17, the lifting piece is fixed in the fixing frame 17 and used for driving the fixing block 23 to lift, and the moving piece is installed on one side of the lifting piece and used for driving the fixing block 23 to move;
through fixed block 23, lifting part and moving part, can adjust the position of fixed block 23 for fixed block 23 can correspond with the bending wheel of different diameters, can fix the hard tube, makes the hard tube can rotate round the bending wheel, realizes buckling the hard tube, and the bending efficiency is high.
As shown in fig. 3, the lifting member includes a motor 18, a screw 19, a slider 20, and a guide rod 21;
the screw rod 19 is positioned in the middle of the fixed frame 17 and is rotationally connected with the fixed frame 17, the motor 18 is arranged at the top end of the fixed frame 17, and the output end of the motor 18 is fixedly connected with the end part of the screw rod 19;
the sliding block 20 is sleeved on the surface of the screw rod 19, and the sliding block 20 is in threaded connection with the screw rod 19;
the guide rods 21 are provided with two groups and are symmetrically arranged on two sides of the sliding block 20, the guide rods 21 penetrate through the sliding block 20, and the sliding block 20 is in sliding connection with the guide rods 21;
the moving part comprises an electric push rod 22, the fixed end of the electric push rod 22 is fixedly connected with a sliding block 20, the output end of the electric push rod 22 is fixedly connected with a fixed block 23, specifically, one side of the fixed block 23, which is close to the electric push rod 22, is provided with a plurality of groups of connecting rods, the connecting rods penetrate through the sliding block 20 and are in sliding connection with the sliding block 20, the fixed frame 17 is provided with a strip-shaped groove which is convenient for the connecting rods to penetrate through, and the arrangement of the connecting rods is used for guiding the fixed block 23 so as to increase the stability of the fixed block 23 during movement;
when the height of the fixed block 23 needs to be adjusted, the motor 18 is controlled to work, the motor 18 drives the screw rod 19 to rotate, and the screw rod 19 is in threaded connection with the sliding block 20, so that the sliding block 20 can be driven to move when the screw rod 19 rotates due to the sliding connection between the sliding block 20 and the guide rod 21, and then the fixed block 23 is driven to move through the electric push rod 22, so that the fixed block 23 can move to one side of the bending wheel, and the positioning of a pipeline inside the bending groove is realized.
As shown in fig. 4, the rotating assembly includes a second hydraulic rod 27, a rack 28, a gear 29, and a guide rail 31;
the bottom end of the rotating disc 12 passes through the workbench 11 and extends into the workbench 11, and the gear 29 is fixed on the surface of the rotating disc 12 and is positioned in the workbench 11;
the guide rail 31 is fixed on the inner wall of the inner cavity of the workbench 11, the rack 28 slides in the guide rail 31, the rack 28 is meshed with the gear 29, the second hydraulic rod 27 is fixed on one side of the workbench 11, the output end of the second hydraulic rod 27 is fixedly connected with the rack 28, and specifically, the workbench 11 is provided with an avoidance hole 30 which is convenient for the rack 28 to pass through;
when the pipeline is required to be bent, after the pipeline is fixed, the second hydraulic rod 27 is controlled to work, the second hydraulic rod 27 drives the rack 28 to move in the guide rail 31, and as the rack 28 and the gear 29 are meshed with each other, the rack 28 can drive the gear 29 to rotate when moving, and then drive the rotating disc 12 to rotate, and the rotating disc 12 can drive the bending wheel above the rotating disc 12 to rotate, so that the pipeline can rotate around the bending wheel, and bending of the hard pipe is realized;
it should be noted that, the top of the workbench 11 is provided with a scale mark 35, in an initial state, the fixing frame 17 is aligned with a zero scale mark on the scale mark 35, when the rotating disc 12 rotates, the fixing frame 17 can be driven to rotate, and then the pipeline is bent, and when the fixing frame 17 rotates, the radian of bending of the pipeline is conveniently controlled by observing the scale value on the scale mark 35 corresponding to the fixing frame 17.
As shown in fig. 6, the driving assembly includes a fixing base 24 and a first hydraulic rod 25;
the fixing seat 24 is fixed on the surface of the workbench 11, the first hydraulic rod 25 is located above the fixing seat 24, the fixed end of the first hydraulic rod 25 is fixedly connected with the fixing seat 24, the output end of the first hydraulic rod 25 is fixedly connected with the limiting seat 26, specifically, guide blocks are fixed on two sides of the bottom end of the limiting seat 26, guide grooves are formed on two sides of the upper surface of the fixing seat 24, the guide blocks slide in the guide grooves, and stability of the limiting seat 26 during movement can be improved by utilizing sliding connection between the guide blocks and the guide grooves;
when the pipeline is limited, the first hydraulic rod 25 is controlled to work, the first hydraulic rod 25 can drive the limiting seat 26 to move, and the limiting groove 34 on the limiting seat 26 can move, so that the limiting groove 34 can correspond to the bending groove on the bending wheel, so that the pipeline can pass through, and the limiting effect on the pipeline is realized.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the utility model.
Claims (7)
1. The hydraulic hard pipe bending equipment comprises a workbench (11) and is characterized by further comprising a bending mechanism and a limiting mechanism;
the bending mechanism comprises a rotating disc (12), a first bending wheel (14), a second bending wheel (15), a third bending wheel (16), a rotating assembly and a fixing assembly, wherein the rotating disc (12) rotates above the workbench (11), the third bending wheel (16), the second bending wheel (15) and the first bending wheel (14) are sequentially arranged above the rotating disc (12), the diameters of the third bending wheel (16), the second bending wheel (15) and the first bending wheel (14) are sequentially decreased, the fixing assembly is arranged on one side of the rotating disc (12) and used for fixing a pipeline, and the rotating assembly is positioned inside the workbench (11) and used for driving the rotating disc (12) to rotate;
the limiting mechanism comprises a limiting seat (26) and a driving assembly, wherein the limiting seat (26) is used for limiting a pipeline, and the driving assembly is fixed at the top end of the workbench (11) and used for driving the limiting seat (26) to move.
2. The hydraulic hard tube bending equipment according to claim 1, wherein a plurality of groups of studs (32) are fixed at the top end of the rotating disc (12), the third bending wheel (16), the second bending wheel (15) and the first bending wheel (14) are sequentially sleeved on the studs (32), a positioning plate (13) is arranged at the top end of the first bending wheel (14), the positioning plate (13) is sleeved on the studs (32), a plurality of groups of nuts (33) are arranged above the positioning plate (13), and the nuts (33) are sleeved on the studs (32) and are in threaded connection with the studs (32).
3. A hydraulic pipe bending apparatus according to claim 2, wherein the fixed assembly comprises a fixed frame (17), a fixed block (23), a lifting member and a moving member;
the fixed frame (17) is fixed on the surfaces of the rotating disc (12) and the positioning plate (13), the fixed block (23) is located in the middle of the fixed frame (17), the lifting part is fixed in the fixed frame (17) and used for driving the fixed block (23) to lift, and the moving part is arranged on one side of the lifting part and used for driving the fixed block (23) to move.
4. A hydraulic hard tube bending apparatus according to claim 3, wherein the lifting member comprises a motor (18), a screw (19), a slider (20) and a guide bar (21);
the screw rod (19) is positioned in the middle of the fixing frame (17) and is rotationally connected with the fixing frame (17), the motor (18) is arranged at the top end of the fixing frame (17), and the output end of the motor (18) is fixedly connected with the end part of the screw rod (19);
the sliding block (20) is sleeved on the surface of the screw rod (19), and the sliding block (20) is in threaded connection with the screw rod (19);
the guide rods (21) are arranged on two groups and symmetrically arranged on two sides of the sliding block (20), the guide rods (21) penetrate through the sliding block (20), and the sliding block (20) is connected with the guide rods (21) in a sliding mode.
5. The hydraulic hard pipe bending equipment according to claim 4, wherein the moving part comprises an electric push rod (22), a fixed end of the electric push rod (22) is fixedly connected with the sliding block (20), and an output end of the electric push rod (22) is fixedly connected with the fixed block (23).
6. A hydraulic hard tube bending apparatus according to claim 5, wherein the rotating assembly comprises a second hydraulic lever (27), a rack (28), a gear (29) and a guide rail (31);
the bottom end of the rotating disc (12) penetrates through the workbench (11) and stretches into the workbench (11), and the gear (29) is fixed on the surface of the rotating disc (12) and is positioned in the workbench (11);
the guide rail (31) is fixed on the inner wall of the inner cavity of the workbench (11), the rack (28) slides in the guide rail (31), the rack (28) is meshed with the gear (29), the second hydraulic rod (27) is fixed on one side of the workbench (11), and the output end of the second hydraulic rod (27) is fixedly connected with the rack (28).
7. A hydraulic hard tube bending apparatus according to claim 6, wherein the drive assembly comprises a fixed seat (24) and a first hydraulic lever (25);
the fixing seat (24) is fixed on the surface of the workbench (11), the first hydraulic rod (25) is located above the fixing seat (24), the fixed end of the first hydraulic rod (25) is fixedly connected with the fixing seat (24), and the output end of the first hydraulic rod (25) is fixedly connected with the limiting seat (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320740789.9U CN219483860U (en) | 2023-04-03 | 2023-04-03 | Hydraulic hard pipe bending equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320740789.9U CN219483860U (en) | 2023-04-03 | 2023-04-03 | Hydraulic hard pipe bending equipment |
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| Publication Number | Publication Date |
|---|---|
| CN219483860U true CN219483860U (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320740789.9U Active CN219483860U (en) | 2023-04-03 | 2023-04-03 | Hydraulic hard pipe bending equipment |
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| CN (1) | CN219483860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117299892A (en) * | 2023-11-28 | 2023-12-29 | 山东贝斯特集成房屋有限公司 | Diagonal brace bending equipment |
-
2023
- 2023-04-03 CN CN202320740789.9U patent/CN219483860U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117299892A (en) * | 2023-11-28 | 2023-12-29 | 山东贝斯特集成房屋有限公司 | Diagonal brace bending equipment |
| CN117299892B (en) * | 2023-11-28 | 2024-02-13 | 山东贝斯特集成房屋有限公司 | Diagonal brace bending equipment |
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