CN223720447U - A petal-shaped mounting structure for printing presses - Google Patents
A petal-shaped mounting structure for printing pressesInfo
- Publication number
- CN223720447U CN223720447U CN202520029858.4U CN202520029858U CN223720447U CN 223720447 U CN223720447 U CN 223720447U CN 202520029858 U CN202520029858 U CN 202520029858U CN 223720447 U CN223720447 U CN 223720447U
- Authority
- CN
- China
- Prior art keywords
- petal
- adjusting
- locking
- mounting
- arm
- 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
Landscapes
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
本实用新型公开一种印刷机用花瓣式安装结构，包括机架，机架上两个安装板相对的一侧均设有花瓣座，所述花瓣座上方架设有版辊，所述花瓣座包括设置在安装板正面的第一花瓣臂和第二花瓣臂，所述第一花瓣臂和第二花瓣臂通过第一转轴可转动连接，所述安装板上设有驱动花瓣座上下活动的第一调节组件，所述安装板上还设有第二调节组件，所述第二调节组件包括第一调节螺丝和第二调节螺丝，所述第一调节螺丝与第一花瓣臂远离第二花瓣臂的一端相抵，所述第二调节螺丝与第二花瓣臂远离第一花瓣臂的一端相抵；通过设置第一调节组件和第二调节组件，在拆卸版辊时使花瓣座将版辊快速抬起，使版辊与承印辊快速分离，解决版辊更换效率低的问题。
This utility model discloses a petal-shaped mounting structure for a printing press, including a frame. Two mounting plates on the frame each have a petal seat on one side facing each other. A printing roller is mounted above the petal seats. Each petal seat includes a first petal arm and a second petal arm disposed on the front side of the mounting plate. The first and second petal arms are rotatably connected by a first rotating shaft. The mounting plate has a first adjustment component for driving the petal seats to move up and down, and a second adjustment component. The second adjustment component includes a first adjustment screw and a second adjustment screw. The first adjustment screw abuts against the end of the first petal arm away from the second petal arm, and the second adjustment screw abuts against the end of the second petal arm away from the first arm. By setting the first and second adjustment components, the petal seats can quickly lift the printing roller when disassembling it, allowing the printing roller to quickly separate from the printing roller, thus solving the problem of low printing roller replacement efficiency.
Description
Technical Field
The utility model relates to the technical field of printing machinery, in particular to a petal type mounting structure for a printing machine.
Background
The petal type mounting structure is an important structure in the printer, the structure comprises two petal arms which are rotationally connected through a rotating shaft, arc-shaped parts matched with the outer circular outline of the plate roller are arranged on the petal arms, two ends of the plate roller can be erected on the petal type mounting structure, in order to enable the plate roller and the printing roller to keep the same rotating speed, the plate roller and the printing roller are usually connected through gear meshing with dense saw teeth, and when the printing roller is replaced, the plate roller and the printing roller cannot be separated by manpower due to the fact that the weight of the plate roller and two gears with dense saw teeth are meshed with each other, therefore, an adjusting screw is usually arranged on the petal type mounting structure, the adjusting screw is used for pushing the end face of one end, away from each other, of the two petal arms, so that the plate roller is supported by the petal arms to be separated from the printing roller, and the replacement is carried out.
The existing petal-type mounting structure has the defects that the adjusting screw is adopted for adjustment, and the adjusting screw is required to be screwed to push the end face of one end of the petal arm for adjustment during adjustment, so that the plate roller is supported, the adjusting efficiency is low, the operation is time-consuming and labor-consuming, and the plate roller replacement time is long, and the efficiency is reduced.
Disclosure of utility model
The utility model provides a petal type mounting structure for a printing machine, which aims at the defects in the prior art, can enable the petal type mounting structure to quickly lift up a plate roller when the plate roller is dismounted, enable the plate roller to be quickly separated from a printing roller, realize quick removal and replacement of the plate roller, and improve the efficiency.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a petal type mounting structure for printing machine, includes the frame, the frame has two mounting panels that set up relatively, and one side that two mounting panels are relative all is equipped with the petal seat, the version roller is erect to petal seat top, and the version roller both ends are erect on the petal seat through the axle bed respectively, the petal seat is including setting up positive first petal arm and the second petal arm at the mounting panel, first petal arm and second petal arm are rotatable through first pivot to be connected, be equipped with the first adjusting part of drive petal seat up-and-down activity on the mounting panel, still be equipped with the second adjusting part on the mounting panel, the second adjusting part includes first adjusting screw and second adjusting screw, first adjusting screw offsets with the one end that the second petal arm was kept away from to first petal arm, the second adjusting screw offsets with the one end that the first petal arm was kept away from to the second petal arm, through setting up first adjusting part and second adjusting part, makes the petal seat lift up the version roller fast when dismantling the version roller, makes version roller and hold up the quick separation of version roller, version roller change inefficiency problem.
As a preferable scheme, the first adjusting component is an adjusting cylinder, the first rotating shaft is connected with a connecting rod, the output end of the adjusting cylinder is abutted on the connecting rod, and an elastic piece which enables the connecting rod to be always abutted on the output end of the adjusting cylinder is further arranged on the mounting plate.
As a preferred scheme, the connecting rod is located the side of first pivot and is equipped with the second pivot, the connecting rod passes through the rotatable installation of second pivot on the mounting panel, during operation, adjust the cylinder and promote the connecting rod and rotate around the second pivot, make first pivot drive the petal seat and reciprocate.
As a preferable scheme, the first adjusting component is arranged on the back of the mounting plate, the mounting plate is further provided with a first mounting hole for the first rotating shaft to move up and down, the first rotating shaft penetrates through the first mounting hole to be connected with the connecting rod, and the mounting plate is further provided with a second mounting hole for mounting the second rotating shaft.
As a preferred scheme, the mounting plate is further provided with a first adjusting block and a second adjusting block, the first adjusting screw and the second adjusting screw are respectively arranged on the first adjusting block and the second adjusting block, the free end of the first adjusting screw penetrates through the first adjusting block to be abutted against the end face of the first petal arm far away from the second petal arm, and the free end of the second adjusting screw penetrates through the second adjusting block to be abutted against the end face of the second petal arm far away from the first petal arm.
The first guide groove is formed between the first baffle strip and the mounting plate, one end of the first petal arm, which is far away from the second petal arm, is located in the first guide groove, the free end of the first adjusting screw penetrates through the first adjusting block and penetrates out of the first guide groove to be in butt joint with the first petal arm, the second baffle strip, which extends out of one side of the mounting plate, is arranged on the front side of the second adjusting block, a second guide groove is formed between the second baffle strip and the mounting plate, one end of the second petal arm, which is far away from the first petal arm, is located in the second guide groove, the free end of the second adjusting screw penetrates through the second adjusting block and penetrates out of the second guide groove to be in butt joint with the second petal arm, a first fixing piece for fixing the first adjusting screw is further arranged on the first adjusting block, and a second fixing piece for fixing the second adjusting screw is further arranged on the second adjusting block.
As a preferable scheme, the mounting plate is provided with mounting grooves penetrating through two sides of the mounting plate, and the mounting grooves are provided with locking components.
As a preferable scheme, the locking assembly comprises a locking cylinder and a locking seat, wherein a locking piece is rotatably arranged on the locking seat, a locking rod is arranged on the locking piece, and when the locking assembly is assembled, the output end of the locking cylinder stretches out and abuts against the locking piece, so that the locking rod compresses the shaft seat.
As a preferable scheme, the free end of the locking rod is provided with a pressing part, the locking rod presses the shaft seat through the pressing part, and the locking rod is also provided with a avoidance inclined plane.
As a preferable scheme, the locking piece is further provided with a waist-shaped hole penetrating through the locking piece, the waist-shaped hole is inclined at a certain angle relative to the driving direction of the locking cylinder, the locking seat is further provided with a third mounting hole, the locking seat is provided with a limiting rod through the third mounting hole, and the limiting rod penetrates through the waist-shaped hole.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, in particular, the first adjusting component and the second adjusting component are arranged, the second adjusting component limits one ends of the first petal supporting arm and the second petal supporting arm, the petal seat of the first adjusting component moves up and down, the petal seat lifts up the plate roller quickly when the plate roller is disassembled, the plate roller is separated from the printing roller quickly, the detaching and replacing efficiency of the plate roller is improved, and the production efficiency is further improved.
For a clearer description of the structural features, technical means, and specific objects and functions achieved by the present utility model, the present utility model will be further described in detail with reference to the accompanying drawings and specific embodiments:
Drawings
FIG. 1 is a schematic diagram of an assembled structure of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the internal structural installation of an embodiment of the present utility model;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2 at A;
FIG. 4 is an exploded view of the internal structure of an embodiment of the present utility model;
fig. 5 is a schematic structural view of a locking assembly according to an embodiment of the present utility model.
The attached drawings are used for identifying and describing:
10-a frame, 11-a mounting plate, 12-a first mounting hole, 13-a second mounting hole, 14-a first petal arm, 15-a second petal arm, 16-a mounting groove, 17-a plate roller, 171-a shaft seat and 18-a first rotating shaft;
20-adjusting cylinder, 21-connecting rod, 22-second rotating shaft, 23-elastic piece;
30-first adjusting screws, 31-first adjusting blocks, 32-first baffle strips, 33-first guide grooves, 34-first fixing pieces, 35-second adjusting screws, 36-second adjusting blocks, 37-second baffle strips, 38-second guide grooves and 39-second fixing pieces;
40-locking cylinder, 41-locking seat, 42-locking piece, 43-locking rod, 431-avoiding inclined plane, 432-pressing part, 44-waist-shaped hole, 45-limit rod and 46-third mounting hole.
Detailed Description
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the positions or elements referred to must have specific directions, be configured and operated in specific directions, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.
As shown in fig. 1-5, the utility model discloses a petal type mounting structure for a printing machine, which comprises a frame 10, wherein the frame 10 is provided with two mounting plates 11 which are oppositely arranged, petal seats are arranged on opposite sides of the two mounting plates 11, a plate roller 17 is arranged above the petal seats, two ends of the plate roller 17 are respectively arranged on the petal seats through shaft seats 171, the petal seats comprise a first petal arm 14 and a second petal arm 15 which are arranged on the front surface of the mounting plate 11, the first petal arm 14 and the second petal arm 15 are rotatably connected through a first rotating shaft 18, a first adjusting component which drives the petal seats to move up and down is arranged on the mounting plate 11, a second adjusting component which comprises a first adjusting screw 30 and a second adjusting screw 35 is further arranged on the mounting plate 11, the first adjusting screw 30 is propped against one end of the first petal arm 14, the second adjusting screw 35 is propped against one end of the second petal arm 15, which is away from the first petal arm 14, and the plate roller 17 is quickly separated from the plate roller 17 when the plate roller 17 is dismounted through the first adjusting component and the second adjusting component, so that the plate roller 17 is quickly separated from the plate roller 17 is quickly replaced.
The first adjusting component is an adjusting cylinder 20, the first rotating shaft 18 is connected with a connecting rod 21, the output end of the adjusting cylinder 20 is abutted to the connecting rod 21, an elastic piece 23 enabling the connecting rod 21 to always abut against the output end of the adjusting cylinder 20 is further arranged on the mounting plate 11, a second rotating shaft 22 is arranged beside the first rotating shaft 18, the connecting rod 21 is rotatably mounted on the mounting plate 11 through the second rotating shaft 22, when the adjusting cylinder 20 works, the connecting rod 21 is pushed to rotate around the second rotating shaft 22 by the adjusting cylinder 20, the first rotating shaft 18 drives the petal seat to move up and down, the first adjusting component is arranged on the back surface of the mounting plate 11, the mounting plate 11 is further provided with a first mounting hole 12 for the first rotating shaft 18 to move up and down, the first rotating shaft 18 penetrates through the first mounting hole 12 to be connected with the connecting rod 21, the mounting plate 11 is further provided with a second mounting hole 13 for mounting the second rotating shaft 22, and the petal seat can be moved up and down through the cooperation of the adjusting cylinder 20 and the connecting rod 21, so that the plate roller 17 and the printing roller can be separated.
The mounting plate 11 is further provided with a first adjusting block 31 and a second adjusting block 36, the first adjusting screw 30 and the second adjusting screw 35 are respectively arranged on the first adjusting block 31 and the second adjusting block 36, the free end of the first adjusting screw 30 penetrates through the first adjusting block 31 to be abutted against the end face of the first petal arm 14 far away from the second petal arm 15, and the free end of the second adjusting screw 35 penetrates through the second adjusting block 36 to be abutted against the end face of the second petal arm 15 far away from the first petal arm 14; the front side of the first adjusting block 31 is provided with a first blocking strip 32 extending to one side of the mounting plate 11, a first guide groove 33 is formed between the first blocking strip 32 and the mounting plate 11, one end of the first petal arm 14, which is far away from the second petal arm 15, is located in the first guide groove 33, the free end of the first adjusting screw 30 penetrates through the first adjusting block 31 and penetrates out of the first guide groove 33 to be in abutting connection with the first petal arm 14, the front side of the second adjusting block 36 is provided with a second blocking strip 37 extending to one side of the mounting plate 11, a second guide groove 38 is formed between the second blocking strip 37 and the mounting plate 11, one end of the second petal arm 15, which is far away from the first petal arm 14, is located in the second guide groove 38, the free end of the second adjusting screw 35 penetrates through the second adjusting block 36 and penetrates out of the second guide groove 38 to be in abutting connection with the second petal arm 15, the first adjusting screw 30 is fixed on the first adjusting block 31, the second adjusting block 36 is also provided with a second fixing piece 34 for fixing the second adjusting screw 35, and the second fixing piece 39 is arranged on the second adjusting block 36, and the setting of the second fixing piece 39 can be further prevented from moving due to the arrangement of the second adjusting screw.
The mounting plate 11 is provided with mounting grooves 16 penetrating through two sides of the mounting plate 11, the mounting grooves 16 are provided with locking assemblies, each locking assembly comprises a locking cylinder 40 and a locking seat 41, a locking piece 42 is rotatably arranged on each locking seat 41, each locking piece 42 is provided with a locking rod 43, when the mounting plate is assembled, the output end of each locking cylinder 40 extends out and abuts against each locking piece 42 to enable the locking rods 43 to press the corresponding shaft seats 171, and the plate roller 17 is fixed on the petal seats through the arrangement of the locking assemblies, so that the running stability of equipment is improved.
The free end of the locking lever 43 is provided with a pressing part 432, the locking lever 43 presses the shaft seat 171 through the pressing part 432, the locking lever 43 is further provided with a avoidance slope 431, and the pressing part 432 can be smoothly pressed on the shaft seat 171 through the arrangement of the avoidance slope 431.
The locking piece 42 is further provided with a waist-shaped hole 44 penetrating the locking piece 42, the waist-shaped hole 44 is inclined at a certain angle relative to the driving direction of the locking cylinder 40, the locking seat 41 is further provided with a third mounting hole 46, the locking seat 41 is provided with a limiting rod 45 through the third mounting hole 46, the limiting rod 45 penetrates the waist-shaped hole 44, and limiting of the locking piece 42 can be achieved through arrangement of the waist-shaped hole 44.
The use method of the utility model comprises the steps of starting the adjusting cylinder 20 to adjust the petal rack to the lowest end during assembly, erecting the plate roller 17 on the petal rack, adjusting the second adjusting component to enable the plate roller 1717 to be positioned at a proper position, starting the locking cylinder 40 to lock the plate roller 17, starting the locking cylinder 40 to unlock the plate roller 17 during disassembly, starting the adjusting cylinder 20 to lift the petal seat to separate the plate roller 17 from the printing roller, and taking down the plate roller 17 to finish the disassembly.
According to the utility model, the first adjusting component and the second adjusting component are arranged, the second adjusting component limits one ends of the first petal supporting arm and the second petal supporting arm, the petal seat of the first adjusting component moves up and down, and when the plate roller 17 is dismounted, the petal seat lifts the plate roller 17 quickly, so that the plate roller 17 is separated from the printing roller quickly, the dismounting efficiency of the plate roller 17 is improved, and the production efficiency is further improved.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, so any modifications, equivalents, improvements, etc. of the above embodiments according to the present utility model are still within the scope of the present utility model.
Claims (10)
1. The petal type mounting structure for the printing machine is characterized by comprising a frame, wherein the frame is provided with two mounting plates which are oppositely arranged, petal seats are arranged on opposite sides of the two mounting plates, a plate roller is arranged above the petal seats, two ends of the plate roller are respectively arranged on the petal seats through shaft seats, the petal seats comprise first petal arms and second petal arms which are arranged on the front sides of the mounting plates and are rotatably connected through first rotating shafts, a first adjusting component which drives the petal seats to move up and down is arranged on the mounting plates, a second adjusting component is further arranged on the mounting plates, the second adjusting component comprises a first adjusting screw and a second adjusting screw, the first adjusting screw is abutted against one end, far away from the second petal arms, of the first petal arms, and the second adjusting screw is abutted against one end, far away from the first petal arms, of the second petal arms.
2. The petal-type mounting structure for a printing machine according to claim 1, wherein the first adjusting component is an adjusting cylinder, the first rotating shaft is connected with a connecting rod, the output end of the adjusting cylinder is abutted on the connecting rod, and an elastic piece enabling the connecting rod to be always abutted on the output end of the adjusting cylinder is further arranged on the mounting plate.
3. The petal-type mounting structure for a printing machine according to claim 2, wherein the connecting rod is provided with a second rotating shaft at the side of the first rotating shaft, the connecting rod is rotatably mounted on the mounting plate through the second rotating shaft, and the adjusting cylinder pushes the connecting rod to rotate around the second rotating shaft when in operation, so that the first rotating shaft drives the petal seat to move up and down.
4. The petal-type mounting structure for a printing machine according to claim 3, wherein the first adjusting component is arranged on the back surface of the mounting plate, the mounting plate is further provided with a first mounting hole for the first rotating shaft to move up and down, the first rotating shaft penetrates through the first mounting hole to be connected with the connecting rod, and the mounting plate is further provided with a second mounting hole for mounting the second rotating shaft.
5. The petal-type mounting structure for a printing machine according to claim 1, wherein the mounting plate is further provided with a first adjusting block and a second adjusting block, the first adjusting screw and the second adjusting screw are respectively arranged on the first adjusting block and the second adjusting block, the free end of the first adjusting screw penetrates through the first adjusting block to be abutted against the end face of the first petal arm far away from the second petal arm, and the free end of the second adjusting screw penetrates through the second adjusting block to be abutted against the end face of the second petal arm far away from the first petal arm.
6. The petal-type mounting structure for a printing machine according to claim 5, wherein a first blocking strip extending to one side of the mounting plate is arranged on the front side of the first adjusting block, a first guide groove is formed between the first blocking strip and the mounting plate, one end, far away from the second petal arm, of the first petal arm is located in the first guide groove, the free end of the first adjusting screw penetrates through the first adjusting block and penetrates out of the first guide groove to be in butt joint with the first petal arm, a second blocking strip extending to one side of the mounting plate is arranged on the front side of the second adjusting block, a second guide groove is formed between the second blocking strip and the mounting plate, one end, far away from the first petal arm, of the second petal arm is located in the second guide groove, the free end of the second adjusting screw penetrates through the second adjusting block and penetrates out of the second guide groove to be in butt joint with the second petal arm, a first fixing piece for fixing the first adjusting screw is further arranged on the first adjusting block, and a second fixing piece for fixing the second adjusting screw is further arranged on the second adjusting block.
7. The petal-type mounting structure for a printing machine according to claim 1, wherein mounting grooves penetrating through two sides of the mounting plate are formed in the mounting plate, and locking assemblies are arranged on the mounting grooves.
8. The petal type mounting structure for a printing press according to claim 7, wherein the locking assembly comprises a locking cylinder and a locking seat, the locking seat is rotatably provided with a locking member, the locking member is provided with a locking rod, and when the locking member is assembled, the output end of the locking cylinder extends out and abuts against the locking member, so that the locking rod compresses the shaft seat.
9. The petal-type mounting structure for a printing press according to claim 8, wherein the free end of the locking rod is provided with a pressing part, the locking rod presses the shaft seat through the pressing part, and the locking rod is further provided with a avoidance inclined plane.
10. The petal-type mounting structure for a printing press according to claim 9, wherein the locking member is further provided with a waist-shaped hole penetrating the locking member, the waist-shaped hole is inclined at a certain angle relative to the driving direction of the locking cylinder, the locking seat is further provided with a third mounting hole, and the locking seat is provided with a limit rod through the third mounting hole, and the limit rod penetrates the waist-shaped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520029858.4U CN223720447U (en) | 2025-01-06 | 2025-01-06 | A petal-shaped mounting structure for printing presses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520029858.4U CN223720447U (en) | 2025-01-06 | 2025-01-06 | A petal-shaped mounting structure for printing presses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223720447U true CN223720447U (en) | 2025-12-26 |
Family
ID=98130020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520029858.4U Active CN223720447U (en) | 2025-01-06 | 2025-01-06 | A petal-shaped mounting structure for printing presses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223720447U (en) |
-
2025
- 2025-01-06 CN CN202520029858.4U patent/CN223720447U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115566355A (en) | New energy automobile battery disassembling bracket device and using method thereof | |
| CN110421527A (en) | A kind of regulating mechanism, a kind of adjuster and a kind of vertical double movement die sets | |
| CN212203019U (en) | Novel cathode roller transmission device | |
| CN217030713U (en) | Monitoring device for information security operation and maintenance | |
| CN117040170A (en) | Carbon brush holder for automobile start-stop motor and quick assembly device for carbon brush holder | |
| CN223719719U (en) | Milling machine | |
| CN221022502U (en) | Edge cutter frame structure convenient to install and maintain | |
| CN221027030U (en) | No computer lab elevator overhauls fixing device | |
| CN215433559U (en) | Water pump fault auxiliary maintenance device | |
| CN224042573U (en) | Drilling device for machining metal steel plate | |
| CN222276576U (en) | A double-axis rolling door machine | |
| CN224115517U (en) | Positioning device for suspension components of construction machinery vehicle frame | |
| CN113074240A (en) | Speed reducer convenient to disassemble | |
| CN218991865U (en) | Miniature gear pump convenient to firm connection | |
| CN216790569U (en) | Waste energy recovery device of air source heat pump | |
| CN219673211U (en) | Totally-enclosed screw rod sliding table convenient to install | |
| CN223164885U (en) | A dust-proof sheet for linear guide rail slider that is easy to install | |
| CN223923517U (en) | Furniture plate connecting rod structure for furniture | |
| CN223544686U (en) | Positioning mechanism with good positioning effect | |
| CN222842974U (en) | Stamping die with die head convenient to replace | |
| CN218430402U (en) | Rubber roll driving and installing mechanism of silk screen plate-making machine | |
| CN219190530U (en) | Plane assemblage machine for plate installation | |
| CN222228707U (en) | Air inlet pipe of automobile engine | |
| CN220311335U (en) | Wire drawing device of electrode wire | |
| CN221989913U (en) | Building templates cleaning equipment for building engineering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |