CN109720990B - automatic driving, hoisting and stacking device for high-temperature tubular pile flange end plate crane - Google Patents
automatic driving, hoisting and stacking device for high-temperature tubular pile flange end plate crane Download PDFInfo
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- CN109720990B CN109720990B CN201910053406.9A CN201910053406A CN109720990B CN 109720990 B CN109720990 B CN 109720990B CN 201910053406 A CN201910053406 A CN 201910053406A CN 109720990 B CN109720990 B CN 109720990B
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Abstract
The invention discloses an automatic driving, hoisting and stacking device of a high-temperature tubular pile flange end plate crane, which comprises a cooling bed 1, a red blank transfer device 2 and a crane 3, wherein red blanks of the high-temperature tubular pile flange end plate are transferred from the upper process through the red blank transfer device 2 and are automatically hoisted and transported to the cooling bed 1 through the crane 3 to be automatically stacked up for centralized cooling treatment, the cooling speed is high, the cooling efficiency is high, the time of a cooling link is reduced, batch production can be realized, the production efficiency of the tubular pile flange end plate is greatly improved, and the cost is reduced.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to an automatic driving, lifting and stacking device for high-temperature pipe pile flange end plate cranes.
[ background of the invention ]
At present, the manufacturing process of the tubular pile flange end plate is to roll a plate into a tubular shape, then cut the plate into tubular pile flange end plates, and then perform post-process treatment, in the whole manufacturing and forming process, a plurality of processes need to perform high-temperature treatment, after treatment, the red blank of the high-temperature tubular pile flange end plate is usually cooled and then manually transported to a lower work station, the waiting time is long, the production efficiency is low, the labor cost is high, under the trend that the labor cost and the site space cost are increasingly rising, the existing processing equipment cannot meet the cost requirement of the product, the production efficiency is improved, and the reduction of the production cost becomes an important subject to be solved urgently by technical personnel in the field.
[ summary of the invention ]
The invention aims to solve the technical problem of providing automatic driving, hoisting and stacking devices of a high-temperature tubular pile flange end plate crane, which have a simple structure and a high production effect.
The invention is realized by the following technical scheme:
kind of high temperature tubular pile flange end plate hoist autopilot handling pile device, its characterized in that includes:
the cooling bed 1 comprises a cooling pool 11, a plurality of support frames 12 used for supporting the high-temperature tubular pile flange end plate red blank 10 are arranged above the cooling pool 11 side by side at intervals along the Y-axis direction, the center distance between every two adjacent support frames 12 is smaller than the diameter of the red blank 10 which is twice, the bottoms of the support frames 12 are communicated with the cooling pool 11, a cooling groove 13 is formed between every two adjacent support frames 12, each support frame 12 is provided with a plurality of storage positions 121 along the X-axis, and a plurality of columns of the support frames 12 and a plurality of storage positions 121 in each column form a plurality of columns and rows of red blank storage areas;
the red blank transfer device 2 comprises a trolley track 21 arranged on the side of a cooling bed 1 , wherein the trolley track 21 is provided with a transfer trolley 22 capable of moving along the trolley track 21 and used for conveying a red blank 10, and a driving device 23 used for driving the transfer trolley 22, the front end of the trolley track 21 positioned at a lifting position is provided with a stroke induction buffer switch 24 used for inducing the transfer trolley 22 to start entering the lifting position, the red blank transfer device 2 further comprises an in-place photoelectric induction switch 25 arranged at the rear end of the lifting position and used for inducing the transfer trolley 22 to reach the lifting position, and a lifting photoelectric induction switch 26 corresponding to the lifting position and used for inducing the red blank 10 on the transfer trolley 22 to be lifted away, and the stroke induction buffer switch 24, the in-place photoelectric induction switch 25 and the lifting photoelectric induction switch 26 are respectively and electrically connected with the driving device 23;
the crane 3 comprises a hoisting beam 31 which stretches across the upper part of the hoisting positions of the cooling bed 1 and the trolley rail 21 and can move along the Y-axis direction, a crane 32 which can move along the X-axis is arranged on the hoisting beam 31, a hook 33 which can lift relative to the hoisting beam 31 is arranged on the crane 32, a hanger 34 is connected below the hook 33, a suspender 35 is arranged on the hanger 34 along the X-axis, the suspender 35 is fixed on the hanger 34, the other end is suspended and faces the red blank transfer device 2, a plurality of crane parking space sensors 36 for sensing the crane 32 are arranged on the hoisting beam 31 along the X-axis direction, wherein the crane parking space sensors 36 are correspondingly arranged on the hoisting beam 31 corresponding to each row of the storage positions 121;
the cold bed 1 is equipped with a plurality of infrared ray gratings along the Y axle direction relatively little car track 21 in addition side and deposits centering inductor 4, every cooling bath 13 between support frame 12 and two adjacent support frames 12 corresponds infrared ray gratings respectively and deposits centering inductor 4, just the infrared ray grating that support frame 12 corresponds deposits centering inductor 4 and is located the lower floor, the infrared ray grating that cooling bath 13 corresponds deposits centering inductor 4 and is located the upper strata, be equipped with on the jib 35 and be used for depositing centering inductor 4 matched with infrared ray grating centering induction receiving switch 37 with the infrared ray grating, be equipped with between little car track 21 and the cold bed 1 and be used for getting material centering inductor 5 with infrared ray grating centering induction receiving switch 37 matched with infrared ray grating.
The automatic driving, lifting and stacking device for high-temperature tubular pile flange end plate cranes is characterized in that the red blank transfer devices 2 are more than groups, each group of red blank transfer devices 2 is provided with two trolley tracks 21 side by side, and each trolley track 21 is provided with a transfer trolley 22.
The automatic driving, hoisting and stacking device for the high-temperature tubular pile flange end plate crane is characterized in that a splayed upper and lower centering guide plate 27 of a suspender with a large opening at the upper end and a small opening at the lower end is arranged between the hoisting position of the trolley track 21 and the cooling bed 1, a splayed left and right centering guide plate 28 of the suspender is arranged on the transport trolley 22 towards the end of the cooling bed 1, the opening of the left and right centering guide plate 28 of the suspender towards the end of the cooling bed 1 is large, and the opening of the end facing the red blank 10 is small.
The automatic driving, lifting and stacking device for the high-temperature tubular pile flange end plate crane is characterized in that the lifting hook 33 is movably connected to the middle position of the lifting frame 34, the crane 32 is provided with a boom guide steel wire rope 38, the end of the boom guide steel wire rope is fixedly connected with the lifting frame 34 and can be folded and unfolded, and the direction of the boom 35 is adjusted by folding and unfolding the boom guide steel wire rope 38.
The automatic driving, lifting and stacking device for the high-temperature tubular pile flange end plate cranes is characterized in that more than high-temperature tubular pile flange end plate cranes are arranged on the cooling bed 1 along the Y-axis direction.
Compared with the prior art, the invention has the following advantages:
1. the invention has simple structure, transfers the red blank of the high-temperature tubular pile flange end plate from the upper process through the red blank transfer device 2, automatically hoists the red blank to the cooling bed 1 through the crane 3, automatically deposits and stacks the red blank for centralized cooling treatment, has high cooling speed and high cooling efficiency, reduces the time of a cooling link, can produce the red blank in batches, greatly improves the production efficiency of the tubular pile flange end plate and reduces the cost.
2. The invention realizes the automatic transfer, lifting and stacking of the red blanks and has safe production.
[ description of the drawings ]
The invention is described in further detail at with reference to the accompanying drawings, in which:
FIG. 1 is a top view of the present invention;
FIG. 2 is a top view of the cooling bed of the present invention;
FIG. 3 is a schematic structural diagram of a red blank stacking area of a flange end plate of a high-temperature pipe pile;
fig. 4 is a partial enlarged view a of fig. 1;
FIG. 5 is a schematic view of the construction of the crane according to the present invention;
FIG. 6 is a schematic view of the structure of the boom of the present invention, which guides the boom in the descending process by centering the guide plate up and down.
[ detailed description ] embodiments
The invention is further described with reference to the following figures:
the automatic driving, lifting and stacking device for the high-temperature pipe pile flange end plate cranes, which is shown in fig. 1 to 6, comprises a cooling bed 1, a red blank transfer device 2 and a crane 3.
The cooling bed 1 comprises a cooling pool 11, a plurality of support frames 12 used for supporting the high-temperature tubular pile flange end plate red blanks 10 are arranged above the cooling pool 11 side by side at intervals along the Y-axis direction, the center distance between two adjacent support frames 12 is smaller than the diameter of the red blank 10 which is twice, and then two adjacent red blanks 10 which are arranged side by side can be used as supports for stacking new red blanks 10 above the two red blanks 10 to form an upper-layer and lower-layer storage structure; each support frame 12 is provided with a plurality of storage positions 121 along the X axis, a plurality of rows of support frames 12 and each row of a plurality of storage positions 121 form a red blank storage area with a plurality of rows and a plurality of columns, an upper layer stacking structure and a lower layer stacking structure are combined to form a red blank storage area with a plurality of layers, a plurality of columns and a plurality of rows, and each storage position 121 in the red blank storage area is provided with a corresponding coding instruction.
The red blank storage device is characterized in that a circulating flowing substance such as cold water can be introduced into the cooling pool 11 to accelerate cooling of the red blanks 10 in the red blank storage area and improve cooling speed, the bottoms of the support frames 12 are communicated with the cooling pool 11 and used for cooling the red blanks 10 on the lower layer, a cooling groove 13 is formed between every two adjacent support frames 12, the cooling groove 13 is over against the red blanks 10 on the second layer, in order to avoid mutual interference of two adjacent red blanks 10, the center distance between every two adjacent support frames 12 is inevitably not less than times of the diameter of the red blank 10, preferably, the center distance between every two adjacent support frames 12 is greater than times of the diameter of the red blank 10, a gap exists between the two red blanks 10 on the lower layer, and the cooling pool 11 can cool the red blanks 10 on the upper layer through the gap and the cooling groove 13 and can cool both sides of the red blanks 10 on the lower layer.
Red base transfer device 2 is including locating the dolly track 21 of cold bed 1 side, be equipped with on the dolly track 21 and follow dolly track 21 and remove and be used for transporting the transportation dolly 22 of red base 10 to and be used for driving the drive arrangement 23 of transporting dolly 22, drive arrangement 23 can be servo motor, band pulley and the drive structure of connecting band pulley and transportation dolly 22 hawser constitution, also can be other drive structure, the front end that lies in the handling position on dolly track 21 is equipped with the stroke response buffer switch 24 that is used for responding to the transport dolly 22 and begins to get into the handling position, red base transfer device 2 is still including locating the rear end of handling position and being used for responding to the photoelectric sensing switch 25 that targets in place that the transportation dolly 22 reachd the handling position to and the corresponding photoelectric sensing switch 26 that hangs away of red base 10 that is used for responding to the transportation dolly 22 of handling position, stroke response buffer switch 24, photoelectric sensing switch 25 that targets in place and hang away photoelectric sensing switch 26 are connected with drive arrangement 23 electricity respectively.
The crane 3 includes the crane beam 31 that spanes in the top of the handling position of cold bed 1 and dolly track 21 and can move along the Y axle direction, be equipped with the crane 32 that can move along the X axle on the crane beam 31, be equipped with the lifting hook 33 that can go up and down relative to the crane beam 31 on the crane 32, lifting hook 33 below is connected with gallows 34, be equipped with jib 35 along the X axle on the gallows 34, jib 35 end is fixed on gallows 34, end is unsettled and towards red base transfer device 2 in addition, be equipped with a plurality of crane parking stall inductors 36 that are used for responding to crane 32 along the X axle direction on the crane beam 31, wherein all correspond on every row of the position 121 on the crane beam 31 and be provided with crane parking stall inductor 36 to the crane 3 stacks red base according to the row.
The cold bed 1 is provided with a plurality of infrared grating storage centering sensors 4 along the Y-axis direction relative to the other side of the trolley track 21, each of the support frames 12 and the cooling grooves 13 between the two adjacent support frames 12 respectively correspond to infrared gratings for storing the centering sensors 4, the infrared grating storage centering sensors 4 corresponding to the support frames 12 are located on the lower layer, the infrared grating storage centering sensors 4 corresponding to the cooling grooves 13 are located on the upper layer, the boom 35 is provided with an infrared grating centering sensing receiving switch 37 used for being matched with the infrared grating storage centering sensors 4, and an infrared grating material taking centering sensor 5 used for being matched with the infrared grating centering sensing receiving switch 37 is arranged between the trolley track 21 and the cold bed 1, so that the crane 3 can stack red blanks according to layers and in series.
As shown in figure 6, a splayed suspender up-and-down centering guide plate 27 with a large upper end opening and a small lower end opening is arranged between the lifting position of the trolley track 21 and the cooling bed 1, as shown in figure 4, a splayed suspender left-and-right centering guide plate 28 is arranged on the transfer trolley 22 and faces to the end of the cooling bed 1, the opening of the end end of the cooling bed 1 of the splayed suspender left-and-right centering guide plate 28 is large, the opening of the end end facing the red blank 10 is small, the suspender 35 can be guided to descend through the suspender up-and-down centering guide plate 27, the suspender 35 can be guided from the left side and the right side through the suspender left-and-right centering guide plate 28 to be inserted into the red blank 10, a crane parking space sensor 36 can be arranged on the lifting beam 31 at the position corresponding to the suspender up-and-down centering guide plate 27 and the lifting position corresponding to the trolley track 21 to sense and position the crane 32, and the crane 32 can also be positioned through the moving mode of.
When the lifting device works, the transfer trolley 22 receives a red blank 10 of a flange end plate of a high-temperature tubular pile coming out of an upper work station, the red blank 10 moves to the cooling bed 1 side along the trolley track 21 under the driving of the driving device 23, when the lifting device starts to enter a lifting position, the stroke sensing buffer switch 24 senses the transfer trolley 22 and feeds back signals, the driving device 23 decelerates the transfer trolley 22 through the driving device 23, after the transfer trolley 22 completely enters and reaches the lifting position, the in-position photoelectric sensing switch 25 senses the transfer trolley 22 and feeds back signals, the driving device 23 controls the transfer trolley 22 to stop at the lifting position and simultaneously sends signals to the crane 3, the lifting beam 31 moves to the trolley track 21 corresponding to the in-position photoelectric sensing switch 25 sending signals along the Y-axis direction, the lifting rod 35 moves and lifts and centers along the X-axis under the driving of the crane 32, the red blank enters the curling of the red blank 10 through the grating infrared ray centering material taking sensor 5 after the primary guiding of the lifting rod centering guide plate 27 and the left and right centering guide plate 28 of the lifting rod, the red blank 10 is driven by the grating infrared ray centering guide plate 27, the lifting device drives the red blank 10 to return to the lifting device to the red blank storage layer and the lifting device to the grating infrared ray storage layer to the corresponding storage layer, and the grating transfer trolley 22 to the grating transfer trolley 22, and the grating inductive switch to be driven by the grating storage layer, and the grating inductive switch 23, and the.
More than groups, every group are organized to red base transfer device 2 has two dolly tracks 21 side by side, and all is equipped with transport dolly 22 on every dolly track 21 to two transport dollies 22 can alternate toward the handling position transport red base 10, reduce hoist 3's latency, improve the efficiency of red base handling pile.
The lifting hook 33 is movably connected to the middle position of the hanger 34, the crane 32 is provided with a boom guide wire rope 38 of which the end is fixedly connected with the hanger 34 and can be retracted, and the direction of the boom 35 is adjusted by retracting the boom guide wire rope 38.
As shown in fig. 1, or more cold beds are arranged along the Y-axis direction of each cold bed 1 so as to store a large number of red billets 10, as shown in fig. 2 and 3, each cold bed 1 has twelve rows of four storage areas on the lower layer, and has ten rows of four storage areas on the upper layer, each storage area can be identified by five-digit codes, the th code represents the cold bed number, the second digit code represents the number of layers, the third and fourth digit codes represent the number of columns, and the fifth digit code represents the number of rows, so that a control command is set, automatic driving, lifting and stacking are realized, a plurality of red billets 10 are cooled, the cooling efficiency is high, the time of a cooling link is reduced, the production efficiency of a flange end plate of a pipe pile is greatly improved, and the cost is reduced.
Claims (5)
1, kind of high temperature tubular pile flange end plate hoist autopilot handling pile device, its characterized in that includes:
the cooling bed (1) comprises a cooling pool (11), a plurality of support frames (12) used for supporting the high-temperature tubular pile flange end plate red blank (10) are arranged above the cooling pool (11) side by side at intervals along the Y-axis direction, the center distance between every two adjacent support frames (12) is smaller than the diameter of the red blank (10) which is twice, the bottoms of the support frames (12) are communicated with the cooling pool (11), a cooling groove (13) is formed between every two adjacent support frames (12), each support frame (12) is provided with a plurality of storage positions (121) along the X-axis, and a plurality of columns of support frames (12) and a plurality of rows of storage positions (121) form a plurality of columns and a plurality of rows of red blank storage areas;
the red blank transfer device (2) comprises a trolley track (21) arranged on the side of a cooling bed (1), wherein the trolley track (21) is provided with a transfer trolley (22) capable of moving along the trolley track (21) and used for conveying a red blank (10), and a driving device (23) used for driving the transfer trolley (22), the front end of the trolley track (21) located at a lifting position is provided with a stroke sensing buffer switch (24) used for sensing that the transfer trolley (22) starts to enter the lifting position, the red blank transfer device (2) further comprises an in-place photoelectric sensing switch (25) arranged at the rear end of the lifting position and used for sensing that the transfer trolley (22) reaches the lifting position, and a lifting photoelectric sensing switch (26) corresponding to the lifting position and used for sensing that the red blank (10) on the transfer trolley (22) is lifted away, and the stroke sensing buffer switch (24), the in-place photoelectric sensing switch (25) and the lifting photoelectric sensing switch (26) are respectively electrically connected with the driving device (23);
the crane (3) comprises a hoisting beam (31) which stretches across the upper part of the hoisting positions of the cooling bed (1) and the trolley track (21) and can move along the Y-axis direction, a crane (32) which can move along the X-axis is arranged on the hoisting beam (31), a lifting hook (33) which can lift relative to the hoisting beam (31) is arranged on the crane (32), a lifting frame (34) is connected to the lower part of the lifting hook (33), a lifting rod (35) is arranged on the lifting frame (34) along the X-axis, the lifting rod (35) end is fixed on the lifting frame (34), the other end is suspended and faces the red blank transfer device (2), a plurality of crane parking space sensors (36) used for sensing the crane (32) are arranged on the hoisting beam (31) along the X-axis direction, and the crane parking space sensors (36) are correspondingly arranged on the positions, corresponding to each row of storage positions (121), on the hoisting beam (31);
the cooling bed is characterized in that a plurality of infrared gratings are arranged on the side of the cooling bed (1) relative to the trolley track (21) along the Y-axis direction to store the centering sensors (4), each cooling groove (13) between the support frame (12) and the two adjacent support frames (12) corresponds to infrared gratings respectively to store the centering sensors (4), the infrared gratings corresponding to the support frames (12) are stored in the centering sensors (4) and are located on the lower layer, the infrared gratings corresponding to the cooling grooves (13) are stored in the centering sensors (4) and are located on the upper layer, infrared grating centering induction receiving switches (37) matched with the centering sensors (4) are arranged on the hanging rod (35), and infrared grating material taking centering sensors (5) matched with the infrared grating centering induction receiving switches (37) are arranged between the trolley track (21) and the cooling bed (1).
2. The automatic driving, lifting and stacking device for the high-temperature pipe pile flange end plate crane according to claim 1, wherein the number of the red blank transfer devices (2) is more than , each red blank transfer device (2) is provided with two trolley rails (21) side by side, and each trolley rail (21) is provided with a transfer trolley (22).
3. The automatic driving, lifting and stacking device for the high-temperature pipe pile flange end plate crane according to claim 1, wherein a splayed upper and lower centering guide plate (27) for the suspender is arranged between the lifting position of the trolley rail (21) and the cooling bed (1), the splayed left and right centering guide plate (28) for the suspender is arranged at the end of the transfer trolley (22) facing the cooling bed (1), the opening of the left and right centering guide plate (28) for the suspender facing the end of the cooling bed (1) is large, and the opening of the end facing the red billet (10) is small.
4. The automatic driving, lifting and stacking device for the high-temperature pipe pile flange end plate crane according to claim 1, wherein the lifting hook (33) is movably connected to the middle position of the lifting frame (34), the crane (32) is provided with a boom guide wire rope (38) which is end fixedly connected with the lifting frame (34) and can be retracted, and the direction of the boom (35) is adjusted by retracting the boom guide wire rope (38).
5. The kinds of high temperature tubular pile flange end plate crane automatic driving, lifting and stacking device of claim 1, characterized in that the cooling bed (1) is provided with more than along the Y-axis direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053406.9A CN109720990B (en) | 2019-01-21 | 2019-01-21 | automatic driving, hoisting and stacking device for high-temperature tubular pile flange end plate crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053406.9A CN109720990B (en) | 2019-01-21 | 2019-01-21 | automatic driving, hoisting and stacking device for high-temperature tubular pile flange end plate crane |
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| CN109720990A CN109720990A (en) | 2019-05-07 |
| CN109720990B true CN109720990B (en) | 2020-01-31 |
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| CN201910053406.9A Active CN109720990B (en) | 2019-01-21 | 2019-01-21 | automatic driving, hoisting and stacking device for high-temperature tubular pile flange end plate crane |
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| CN114836610B (en) * | 2022-04-29 | 2023-11-28 | 重庆长征重工有限责任公司 | Charging and discharging method for tail hooking frame |
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| US3805945A (en) * | 1972-06-05 | 1974-04-23 | Mitsui Shipbuilding Eng | Apparatus for classifying flanged pipes |
| CN105460603A (en) * | 2015-12-16 | 2016-04-06 | 中山市毅马五金有限公司 | Loading and unloading device of numerical control lathe for machining flange end plate |
| CN105750835A (en) * | 2015-12-16 | 2016-07-13 | 中山市毅马五金有限公司 | Flange end plate machining process |
| CN108147006A (en) * | 2017-11-23 | 2018-06-12 | 楚兵 | Full-automatic flange ring carriage |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183287A (en) * | 2011-12-29 | 2013-07-03 | 核动力运行研究所 | Hoisting clamp specially used for reactor coolant pump main flange bolt |
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2019
- 2019-01-21 CN CN201910053406.9A patent/CN109720990B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3805945A (en) * | 1972-06-05 | 1974-04-23 | Mitsui Shipbuilding Eng | Apparatus for classifying flanged pipes |
| CN105460603A (en) * | 2015-12-16 | 2016-04-06 | 中山市毅马五金有限公司 | Loading and unloading device of numerical control lathe for machining flange end plate |
| CN105750835A (en) * | 2015-12-16 | 2016-07-13 | 中山市毅马五金有限公司 | Flange end plate machining process |
| CN108147006A (en) * | 2017-11-23 | 2018-06-12 | 楚兵 | Full-automatic flange ring carriage |
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Effective date of registration: 20211115 Address after: 528400 "Suoyi Shawei", Shazi village, Minmin Town, Zhongshan City, Guangdong Province; Add a business site, specifically: No. 2, Shazi Avenue, Shazi administrative village, Minmin Town, Zhongshan City (one photo and multiple sites) Patentee after: Guangdong Yima Group Co., Ltd Patentee after: GUANGZHOU YIMA CASTING & FORGING INDUSTRY Co.,Ltd. Patentee after: ZHONGSHAN LIULIULIU INTELLIGENT EQUIPMENT Co.,Ltd. Patentee after: ZHONGSHAN STAINLESS STEEL TECHNOLOGY CO.,LTD. Patentee after: WUZHOU YIMA HARDWARE PRODUCTS Co.,Ltd. Patentee after: GUANGDONG JINGUBANG PIPE PILE FOUNDATION Co.,Ltd. Patentee after: JURONG ZHONGSHENG BELT TECHNOLOGY CO.,LTD. Patentee after: JURONG YIMA HARDWARE PRODUCT Co.,Ltd. Patentee after: LIAONING YIMA HARDWARE Co.,Ltd. Patentee after: TIANJIN YIMA METAL PRODUCTS Co.,Ltd. Address before: 528400 Shazi Industrial Park, Minmin Town, Zhongshan City, Guangdong Province Patentee before: Guangdong Yima Group Co., Ltd Patentee before: TIANJIN YIMA METAL PRODUCTS Co.,Ltd. Patentee before: GUANGZHOU YIMA CASTING & FORGING INDUSTRY Co.,Ltd. Patentee before: ZHONGSHAN LIULIULIU INTELLIGENT EQUIPMENT Co.,Ltd. Patentee before: ZHONGSHAN STAINLESS STEEL TECHNOLOGY CO.,LTD. Patentee before: ZHONGSHAN ZHONGSHENG METAL PLATE AND STRIP TECHNOLOGY CO.,LTD. Patentee before: WUZHOU YIMA HARDWARE PRODUCTS Co.,Ltd. Patentee before: GUANGDONG JINGUBANG PIPE PILE FOUNDATION Co.,Ltd. Patentee before: JURONG ZHONGSHENG BELT TECHNOLOGY CO.,LTD. Patentee before: JURONG YIMA HARDWARE PRODUCT Co.,Ltd. Patentee before: LIAONING YIMA HARDWARE Co.,Ltd. |