CN221581841U - Steel bar bending machine - Google Patents
Steel bar bending machine Download PDFInfo
- Publication number
- CN221581841U CN221581841U CN202322922134.6U CN202322922134U CN221581841U CN 221581841 U CN221581841 U CN 221581841U CN 202322922134 U CN202322922134 U CN 202322922134U CN 221581841 U CN221581841 U CN 221581841U
- Authority
- CN
- China
- Prior art keywords
- connecting plate
- clamping
- frame
- bending machine
- fixing member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005452 bending Methods 0.000 title claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 title abstract description 24
- 239000010959 steel Substances 0.000 title abstract description 24
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 28
- 230000000712 assembly Effects 0.000 claims description 14
- 238000000429 assembly Methods 0.000 claims description 14
- 238000013459 approach Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The utility model relates to a steel bar bending machine which comprises a frame, a bending mechanism and an auxiliary assembly, wherein a workbench is arranged on the upper side of the frame; the bending mechanism is rotatably arranged on the workbench along the axis of the vertical direction and is used for bending the reinforcing steel bars; the auxiliary assembly comprises a connecting plate and a clamping mechanism, wherein the connecting plate is rotatably arranged on one side of the frame along an axis in a first direction so as to have a working state of rotating upwards to be flush with the workbench and a avoidance state of rotating downwards to be opposite to the side face of the frame, and the clamping mechanism is arranged on the connecting plate so as to be used for clamping reinforcing steel bars in the working state. The utility model reduces the labor intensity of operation and eliminates the potential safety hazard.
Description
Technical Field
The utility model relates to the technical field of steel bar processing equipment, in particular to a steel bar bending machine.
Background
With the continuous development of building engineering, the reinforced bars are used as the skeleton of the concrete to form reinforced concrete, so that the reinforced concrete becomes a main material with wide application range and large quantity in the building structure. The steel bar bending machine is one of the machines for processing steel bars, and can process the steel bars into a bending state with a certain radian.
CN219074202U is a steel bar bending machine, comprising an organic table and a rotary table arranged on the table, wherein a rotary central shaft is arranged in the middle of the rotary table, a bending pin shaft is eccentrically arranged on the rotary table, the rotary table is driven by a rotary driving device to horizontally rotate, and a limiting block, a fixing frame and a supporting component for limiting steel bars are also arranged on the table; the fixing frame is provided with at least one roll shaft, the limiting block is provided with a limiting part for supporting the side face of the steel bar, and the limiting part is eccentrically arranged relative to the rotating central shaft; the limiting part is positioned between the bending pin shaft and the roll shaft, and a steel bar placing gap is formed between the limiting part and the rotating central shaft.
However, in the prior art, because the area of the table top of the machine is small, when the steel bar is bent, an operator is required to hold one end of the steel bar for bending operation, so that the labor intensity of the operator is increased, and a certain potential safety hazard exists.
Disclosure of utility model
In view of the above, it is necessary to provide a bending machine for reinforcing steel bars, which is used for solving the technical problems that in the prior art, the area of the table surface of the machine is small, when the reinforcing steel bars are bent, an operator is required to hold one end of the reinforcing steel bars for bending operation, the labor intensity of the operator is increased, and a certain potential safety hazard exists.
The utility model provides a steel bar bending machine, which comprises:
the machine frame is provided with a workbench at the upper side;
The bending mechanism is rotatably arranged on the workbench along the axis in the vertical direction and is used for bending the reinforcing steel bars;
the auxiliary assembly comprises a connecting plate and a clamping mechanism, wherein the connecting plate is rotatably arranged on one side of the frame along an axis in the first direction so as to have a working state of rotating upwards to be flush with the workbench and a avoidance state of rotating downwards to be opposite to the side face of the frame, and the clamping mechanism is arranged on the connecting plate so as to be used for clamping reinforcing steel bars in the working state.
Optionally, the auxiliary assembly includes two stay bar assemblies, two stay bar assemblies are located respectively the frame is followed the opposite both sides of first direction, and each stay bar assembly's both ends respectively with the frame with the connecting plate rotates to be connected, the stay bar assembly is used for the drive the connecting plate is in the operating condition with dodge the state and make a round trip to switch.
Optionally, the clamping mechanism includes mounting, clamping piece and actuating mechanism, the mounting is located the outside of connecting plate, the clamping piece along be close to and keep away from the direction movable mounting of mounting in the connecting plate is used for compressing tightly the reinforcing bar on the mounting when the clamping piece is close to the mounting, actuating mechanism locates the inboard of connecting plate, actuating mechanism is used for the drive the clamping piece activity.
Optionally, the connecting plate is provided with two mounting holes, and the two mounting holes are respectively positioned at two opposite ends of the fixing piece along the first direction;
The driving mechanism comprises two connecting shafts, connecting seats and hydraulic cylinders, the two connecting shafts correspond to the two mounting holes one by one, each connecting shaft is slidably mounted in the corresponding mounting hole, one end of each connecting shaft is connected with the clamping piece, the connecting seats are connected with one ends, away from the clamping piece, of the two connecting shafts respectively, the hydraulic cylinders are arranged on the inner sides of the connecting plates, and push rods of the hydraulic cylinders are connected with the connecting seats and used for driving the connecting seats to move.
Optionally, a side surface of the fixing piece facing one side of the clamping piece is provided with a first anti-slip structure, and a side surface of the clamping piece facing one side of the fixing piece is provided with a second anti-slip structure.
Optionally, the fixing member and the clamping member are each disposed to extend in the first direction.
Optionally, the auxiliary assembly further includes a support rotatably mounted on the end of the connection board away from the frame along the axis in the first direction, and located on the inner side of the connection board, so as to have a supporting state of rotating downward and a stowage state of rotating upward to a stowing state opposite to the inner side of the connection board, so that when in the supporting state, the support is used for abutting against the ground to support the connection board.
Optionally, the support includes two vertical beams and first crossbeam and second crossbeam, two vertical beams are followed the first direction interval is laid, first crossbeam with two one end of vertical beams is connected, the second crossbeam with two the middle part of vertical beams is connected, wherein, first crossbeam follow the axis rotation in the first direction install in the connecting plate keep away from the one end of frame.
Optionally, an end face of one end of each vertical beam, which is far away from the first cross beam, is arranged in a connecting hole;
The auxiliary assembly further comprises two telescopic beams, the two telescopic beams correspond to the two vertical beams one by one, one end of each telescopic beam is slidably mounted in the connecting hole, and the length of each telescopic beam extending out of the connecting hole can be adjusted.
Optionally, two auxiliary assemblies are provided, and the two auxiliary assemblies are arranged on two opposite sides of the frame.
Compared with the prior art, the workbench is arranged on the upper side of the rack, the bending mechanism is rotatably arranged on the workbench along the axis in the vertical direction, the connecting plate is rotatably arranged on one side of the rack along the axis in the first direction, so that the bending mechanism has a working state of being rotated upwards to be parallel to the workbench and a avoidance state of being rotated downwards to be opposite to the side face of the rack, the clamping mechanism is arranged on the connecting plate, when the bending mechanism is particularly used, when longer reinforcing steel bars need to be bent, the connecting plate is rotated to enable the connecting plate to be in the working state, at the moment, the connecting plate is parallel to the workbench, the area of a working table is enlarged, reinforcing steel bars are conveniently placed, and then the reinforcing steel bars are fixedly clamped through the clamping mechanism.
The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and its details set forth in the accompanying drawings. Specific embodiments of the present utility model are given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of a steel bar bending machine according to the present utility model;
fig. 2 is a front view of the bending machine of fig. 1;
Fig. 3 is a schematic perspective view of the bending machine for reinforcing steel bars in fig. 1, wherein two connecting plates are in an operating state;
Fig. 4 is a front view of the bending machine of fig. 3, in which two connection plates are in operation;
Fig. 5 is a perspective view of the bending machine for reinforcing steel bars of fig. 1, in which one of the connection plates is in an operating state.
Reference numerals illustrate:
1-frame, 11-workstation, 2-mechanism of bending, 3-auxiliary component, 31-connecting plate, 311-mounting hole, 32-clamping mechanism, 321-mounting, 322-clamping piece, 323-actuating mechanism, 3231-connecting axle, 3232-connecting seat, 3233-pneumatic cylinder, 33-vaulting pole subassembly, 34-support, 341-vertical beam, 342-second crossbeam, 35-telescopic beam.
Detailed Description
The following detailed description of preferred embodiments of the utility model is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the utility model, are used to explain the principles of the utility model and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 5, the steel bar bending machine comprises a frame 1, a bending mechanism 2 and an auxiliary assembly 3, wherein a workbench 11 is arranged on the upper side of the frame 1; the bending mechanism 2 is rotatably arranged on the workbench 11 along the axis of the vertical direction, and the bending mechanism 2 is used for bending the reinforcing steel bars; the auxiliary assembly 3 comprises a connecting plate 31 and a clamping mechanism 32, wherein the connecting plate 31 is rotatably mounted on one side of the frame 1 along an axis in a first direction so as to have an operating state of being rotated upwards to be flush with the workbench 11 and an avoidance state of being rotated downwards to be opposite to the side surface of the frame 1, and the clamping mechanism 32 is arranged on the connecting plate 31 so that the clamping mechanism 32 is used for clamping reinforcing steel bars in the operating state.
According to the steel bar bending machine provided by the utility model, the workbench 11 is arranged on the upper side of the machine frame 1, the bending mechanism 2 is rotatably arranged on the workbench 11 along the axis in the vertical direction, the connecting plate 31 is rotatably arranged on one side of the machine frame 1 along the axis in the first direction so as to have a working state of being flush with the workbench 11 and an avoidance state of being arranged opposite to the side surface of the machine frame 1, the clamping mechanism 32 is arranged on the connecting plate 31, when a longer steel bar is required to be bent, the connecting plate 31 is rotated so that the connecting plate 31 is in the working state, at the moment, the connecting plate 31 is flush with the workbench 11, the area of the surface of the workbench 11 is enlarged, the steel bar is conveniently placed, then the steel bar is fixedly clamped through the clamping mechanism 32, the steel bar can be fixed through the clamping mechanism 32, the labor intensity of operation is reduced, the potential safety hazard is avoided, the connecting plate 31 can be rotated so that the connecting plate 31 is in the avoidance state after the machining is finished, the occupied area of the equipment is reduced, and the storage is convenient.
It should be noted that, the bending mechanism 2 is in the prior art and will not be described herein in detail.
Further, referring to fig. 3 to 4, the specific form of driving the connection plate 31 to rotate is not limited, in this embodiment, the auxiliary assembly 3 includes two strut assemblies 33, the two strut assemblies 33 are respectively located at two opposite sides of the frame 1 along the first direction, and two ends of each strut assembly 33 are respectively connected with the frame 1 and the connection plate 31 in a rotating manner, and the strut assemblies 33 are used for driving the connection plate 31 to switch back and forth between the working state and the avoiding state.
Further, the specific form of the strut assembly 33 is not limited, and may be an electric strut, an air strut, or a hydraulic strut.
Further, referring to fig. 3 to 5, in the present embodiment, the clamping mechanism 32 includes a fixing member 321, a clamping member 322 and a driving mechanism 323, the fixing member 321 is disposed on the outer side of the connecting plate 31, the clamping member 322 is movably mounted on the connecting plate 31 along a direction approaching and separating from the fixing member 321, so as to be used for pressing the reinforcing steel bar on the fixing member 321 when the clamping member 322 approaches the fixing member 321, the driving mechanism 323 is disposed on the inner side of the connecting plate 31, and the driving mechanism 323 is used for driving the clamping member 322 to move. Specifically, when in the working state, the clamping piece 322 and the fixing piece 321 are arranged at intervals from top to bottom, the clamping piece 322 moves along the vertical direction, when in use, the reinforcing steel bar is placed between the fixing piece 321 and the clamping piece 322, then the clamping piece 322 is driven by the driving mechanism 323 to move vertically downwards, the reinforcing steel bar is pressed on the fixing piece 321, the reinforcing steel bar is fixed through the arrangement, manual holding is avoided, the labor intensity is reduced, the driving mechanism 323 is arranged on the inner side of the connecting plate 31, and when in the avoidance state, the driving mechanism 323 is contained in the frame 1, so that the whole equipment is compact in structure, the occupied area is reduced, and the storage is convenient.
The outer side of the connection plate 31 refers to the side of the connection plate 31 facing upward in the operating state, and the inner side of the connection plate 31 refers to the side of the connection plate 31 facing downward.
Further, the mounting manner of the clamping member 322 is not limited, and referring to fig. 3 to 4, in this embodiment, the connecting plate 31 is provided with two mounting holes 311, and the two mounting holes 311 are respectively located at two opposite ends of the fixing member 321 along the first direction; the driving mechanism 323 includes two connecting shafts 3231, a connecting base 3232 and a hydraulic cylinder 3233, the two connecting shafts 3231 are in one-to-one correspondence with the two mounting holes 311, each connecting shaft 3231 is slidably mounted in the mounting hole 311, one end of the connecting shaft 3231 is connected with the clamping piece 322, the connecting base 3232 is connected with one end of the connecting shaft 3231 away from the clamping piece 322, the hydraulic cylinder 3233 is arranged on the inner side of the connecting plate 31, and a push rod of the hydraulic cylinder 3233 is connected with the connecting base 3232 and is used for driving the connecting base 3232 to move. When the clamping device is specifically used, the hydraulic cylinder 3233 drives the connecting seat 3232 to move towards a direction away from the connecting plate 31, the connecting seat 3232 drives the connecting shaft 3231 to slide, and the connecting shaft 3231 drives the clamping piece 322 to move towards the direction of the fixing piece 321, so that the clamping and fixing of the reinforcing steel bars are realized.
Further, in order to better clamp the reinforcing steel bar, a side surface of the fixing member 321 facing the clamping member 322 is provided with a first anti-slip structure, and a side surface of the clamping member 322 facing the fixing member 321 is provided with a second anti-slip structure. The friction force between the fixing member 321 and the clamping member 322 and the reinforcing steel bar is increased by providing the first and second anti-slip structures, thereby preventing the reinforcing steel bar from moving.
Further, the first anti-slip structure and the second anti-slip structure are not limited in particular, and in this embodiment, the first anti-slip structure and the second anti-slip structure are all arranged in a reticulate pattern.
Further, when some of the reinforcing bars are bent, they are disposed obliquely, and in order to clamp the obliquely disposed reinforcing bars, referring to fig. 3 to 5, in this embodiment, the fixing member 321 and the clamping member 322 are disposed to extend along the first direction. That is, the fixing member 321 and the clamping member 322 are all arranged in a strip shape, so that the obliquely placed reinforcing steel bars can be clamped.
Further, referring to fig. 3 to 4, in the present embodiment, the auxiliary assembly 3 further includes a bracket 34, where the bracket 34 is rotatably mounted on an end of the connecting plate 31 away from the frame 1 along the axis in the first direction, and is located on the inner side of the connecting plate 31, so as to have a supporting state of rotating downward and a stowing state of rotating upward to be disposed opposite to the inner side of the connecting plate 31, so that in the supporting state, the bracket 34 is used to abut against the ground to support the connecting plate 31. The support 34 can assist in supporting the connecting plate 31, so that stability of the connecting plate 31 in the working state is improved.
Further, referring to fig. 3, in this embodiment, the bracket 34 includes two vertical beams 341, and a first beam and a second beam 342, where the two vertical beams 341 are arranged at intervals along the first direction, the first beam is connected to one ends of the two vertical beams 341, and the second beam 342 is connected to a middle portion of the two vertical beams 341, and the first beam is rotatably mounted on an end, far away from the frame 1, of the connection plate 31 along an axis in the first direction. So set up, the structure is firm, supports steadily.
Further, referring to fig. 3 and 5, in this embodiment, an end surface of one end of each vertical beam 341 away from the first cross beam is disposed in a connection hole; the auxiliary assembly 3 further comprises two telescopic beams 35, the two telescopic beams 35 are in one-to-one correspondence with the two vertical beams 341, and one end of each telescopic beam 35 is slidably mounted in the connecting hole, so that the length of the telescopic beam 35 extending out of the connecting hole can be adjusted. So set up, on the one hand through setting up flexible roof beam 35 can adapt to the uneven bottom surface of height, avoid the unsettled unable supporting role that plays of support 34, on the other hand reduces the occupation of land space of support 34, the convenience is taken in support 34, avoid with frame 1 takes place to interfere.
Further, the steel bar bending machine can generally feed steel bars on two opposite sides, so in this embodiment, two auxiliary assemblies 3 are provided, and two auxiliary assemblies 3 are provided on two opposite sides of the frame 1.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (10)
1. A bar bender, characterized in that it comprises:
the machine frame is provided with a workbench at the upper side;
The bending mechanism is rotatably arranged on the workbench along the axis in the vertical direction and is used for bending the reinforcing steel bars;
the auxiliary assembly comprises a connecting plate and a clamping mechanism, wherein the connecting plate is rotatably arranged on one side of the frame along an axis in the first direction so as to have a working state of rotating upwards to be flush with the workbench and a avoidance state of rotating downwards to be opposite to the side face of the frame, and the clamping mechanism is arranged on the connecting plate so as to be used for clamping reinforcing steel bars in the working state.
2. A bending machine according to claim 1, wherein the auxiliary assembly comprises two strut assemblies, the two strut assemblies are respectively located at two opposite sides of the frame along the first direction, two ends of each strut assembly are respectively connected with the frame and the connecting plate in a rotating manner, and the strut assemblies are used for driving the connecting plate to switch back and forth between the working state and the avoiding state.
3. A bending machine according to claim 2, wherein the clamping mechanism comprises a fixing member, a clamping member and a driving mechanism, the fixing member is arranged on the outer side of the connecting plate, the clamping member is movably mounted on the connecting plate in a direction approaching to and separating from the fixing member so as to be used for pressing the reinforcing steel bar on the fixing member when the clamping member approaches to the fixing member, the driving mechanism is arranged on the inner side of the connecting plate, and the driving mechanism is used for driving the clamping member to move.
4. A bending machine for reinforcing steel bars according to claim 3, wherein the connecting plate is provided with two mounting holes, the two mounting holes being respectively located at opposite ends of the fixing member in the first direction;
The driving mechanism comprises two connecting shafts, connecting seats and hydraulic cylinders, the two connecting shafts correspond to the two mounting holes one by one, each connecting shaft is slidably mounted in the corresponding mounting hole, one end of each connecting shaft is connected with the clamping piece, the connecting seats are connected with one ends, away from the clamping piece, of the two connecting shafts respectively, the hydraulic cylinders are arranged on the inner sides of the connecting plates, and push rods of the hydraulic cylinders are connected with the connecting seats and used for driving the connecting seats to move.
5. A bending machine according to claim 3, wherein the side of the fixing member facing the side of the clamping member is provided with a first anti-slip structure and the side of the clamping member facing the side of the fixing member is provided with a second anti-slip structure.
6. A bending machine according to claim 3, wherein the securing member and the clamping member are each arranged to extend in the first direction.
7. A bending machine according to claim 1, wherein the auxiliary assembly further comprises a bracket rotatably mounted to an end of the web remote from the frame along the axis in the first direction and located inwardly of the web so as to have a support position rotated downwardly and a stowed position rotated upwardly to lie opposite the inner side of the web so that in the support position the bracket is adapted to abut the ground to support the web.
8. A bending machine according to claim 7, wherein the support comprises two vertical beams and first and second beams, the two vertical beams being arranged at intervals along the first direction, the first beam being connected to one end of the two vertical beams, the second beam being connected to the middle of the two vertical beams, wherein the first beam is rotatably mounted to one end of the connection plate remote from the frame along the axis in the first direction.
9. A bending machine for reinforcing steel bars according to claim 8, wherein the end face of each of said vertical beams at the end remote from said first cross beam is provided with a connecting hole;
The auxiliary assembly further comprises two telescopic beams, the two telescopic beams correspond to the two vertical beams one by one, one end of each telescopic beam is slidably mounted in the connecting hole, and the length of each telescopic beam extending out of the connecting hole can be adjusted.
10. A bending machine according to claim 1, wherein there are two said auxiliary assemblies, two said auxiliary assemblies being provided on opposite sides of said frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322922134.6U CN221581841U (en) | 2023-10-27 | 2023-10-27 | Steel bar bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322922134.6U CN221581841U (en) | 2023-10-27 | 2023-10-27 | Steel bar bending machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221581841U true CN221581841U (en) | 2024-08-23 |
Family
ID=92405283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322922134.6U Active CN221581841U (en) | 2023-10-27 | 2023-10-27 | Steel bar bending machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221581841U (en) |
-
2023
- 2023-10-27 CN CN202322922134.6U patent/CN221581841U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100907260B1 (en) | Ceiling mobile junk car dismantling device | |
| CN211464376U (en) | Double-station bending machine | |
| CN107971682A (en) | Quick fixture replacing device | |
| CN213979799U (en) | Light partition plate mounting machine | |
| CN221581841U (en) | Steel bar bending machine | |
| CN114412203B (en) | Auxiliary device for hoisting and positioning prefabricated wall components | |
| CN212264995U (en) | Positioning and tailor-welding tool for trailer carriage plate | |
| CN109396712B (en) | Assembling table for frame in special vehicle | |
| CN220433441U (en) | Bridge is demolishd and is used support locking device | |
| KR100907256B1 (en) | Junk car demolition system | |
| CN218503067U (en) | Multi-radian bending device for steel pipe | |
| CN217967709U (en) | Cutting machine for building stones | |
| CN212198333U (en) | Portable new energy automobile maintenance platform | |
| CN112536509B (en) | Be used for steel to construct welded curb plate feed mechanism | |
| CN209908534U (en) | Cloth trolley device is hung to flexible upset arm of tunnel waterproof board | |
| CN112845706A (en) | Bending machine for plate processing and working method thereof | |
| CN218698188U (en) | Auxiliary supporting tool for combining rear axle | |
| CN216138390U (en) | Welding tool for steel structure production | |
| CN222079221U (en) | Color steel plate machining, positioning and clamping mechanism with positioning function | |
| CN212507255U (en) | Frame adjusting device of civil engineering concrete troweling machine | |
| CN218016044U (en) | Commercial car rear axle goes up distance rod support and mills a anchor clamps | |
| CN216272817U (en) | Automatic lifting plate erecting machine | |
| CN114260412B (en) | Hydraulic punching and riveting device for machining springboard | |
| CN221086810U (en) | Elevator door plant processing equipment of bending | |
| CN220061173U (en) | Mobile auxiliary structure of large-scale equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |