CN108746256B - Rail transit maintenance device - Google Patents
Rail transit maintenance device Download PDFInfo
- Publication number
- CN108746256B CN108746256B CN201810643816.4A CN201810643816A CN108746256B CN 108746256 B CN108746256 B CN 108746256B CN 201810643816 A CN201810643816 A CN 201810643816A CN 108746256 B CN108746256 B CN 108746256B
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- frame
- outer frame
- workbench
- plate
- groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The invention provides a rail transit maintenance device, which belongs to the field of rail transit maintenance equipment and comprises a frame, wherein the frame is provided with a workbench, the middle part of the workbench is provided with a through groove, a left fixed table and a right fixed table are arranged on the workbench, and the left fixed table and the right fixed table are respectively arranged on two sides of the through groove; a punching machine is arranged on the frame and provided with a press roller, and the press roller is vertically arranged above the through groove; the frame is also provided with a top shaft which is in threaded connection with the frame, the top shaft is positioned under the compression roller, and the top shaft is positioned under the workbench. The maintenance device can be used for maintaining and correcting mechanical parts used in rail transit, has reasonable structural design, is suitable for the mechanical parts used in the rail transit, and can bring convenience to maintenance work.
Description
Technical Field
The invention relates to the field of rail transit maintenance equipment, in particular to a rail transit maintenance device.
Background
At present, a plurality of mechanical parts are used in the field of rail transit, and some parts can be bent, deformed and the like in the use process, so that the mechanical parts are required to be maintained.
In the prior art, maintenance facilities specially designed for rail transit are fewer, so that the mechanical parts of the rail transit are not easy to find suitable equipment in the maintenance process, and the mechanical parts of the rail transit are inconvenient to maintain quickly.
Disclosure of Invention
The invention provides a rail transit maintenance device, which aims to solve the problems in the prior art.
The invention is realized in the following way:
the rail transit maintenance device comprises a frame, wherein the frame is provided with a workbench, a through groove is formed in the middle of the workbench, a left fixing table and a right fixing table are arranged on the workbench, and the left fixing table and the right fixing table are respectively arranged on two sides of the through groove; the machine frame is provided with a punching machine which is provided with a pressing roller, and the pressing roller is vertically arranged above the through groove; the machine frame is also provided with a top shaft which is in threaded connection with the machine frame, the top shaft is positioned under the press roller, and the top shaft is positioned under the workbench.
Further, the frame includes the fixed plate, the fixed plate sets up along the horizontal direction, the fixed plate is located under the workstation, the jackshaft spiro union in the fixed plate.
Further, the bottom end of the top shaft is connected with a rotating wheel, and the rotating wheel is positioned below the fixed plate.
Further, a chute is arranged on the workbench, and the length direction of the chute is perpendicular to the through groove; the bottom of left fixed station and right fixed station is provided with the slider, the slider is arranged in the spout makes left fixed station and right fixed station can slide on the workstation.
Further, the left fixing table comprises an outer frame and a bottom plate, the outer frame is in a shape of a circle, the bottom plate is arranged at the bottom of the outer frame, and the bottom plate is rotationally connected with the outer frame, so that the outer frame can rotate along a vertical axis; the sliding block is arranged at the bottom of the bottom plate; the top of the outer frame is connected with a compression bolt in threaded connection with the outer frame, and two sides of the outer frame are provided with a jacking screw in threaded connection with the outer frame.
Further, the bottom of the outer frame is a bottom strip, the bottom strip is connected with the bottom plate, the bottom plate is round, jackscrews are arranged on the bottom strip, and the bottom ends of the jackscrews are abutted against the bottom plate; the top of the bottom strip is provided with a U-shaped accommodating groove, a U-shaped supporting piece is arranged in the accommodating groove, and two sides of the supporting piece are hinged with the accommodating groove; and when the supporting piece rotates to the vertical state, the height of the jacking screw is higher than the top surface of the supporting piece.
Further, the bottom end of the compression bolt is connected with a pressing plate, the pressing plate is rotationally connected with the compression bolt, and the bottom surface of the pressing plate is arc-shaped.
Further, the frame comprises a plurality of supporting legs, the supporting legs are located below the workbench, and two ends of the fixing plate are connected to the supporting legs.
The track traffic maintenance device provided by the invention can be used for maintaining, correcting and the like mechanical components used in track traffic, has reasonable structural design, is suitable for the mechanical components used in the track traffic, and can bring convenience to maintenance work.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a rail transit maintenance device according to an embodiment of the present invention;
fig. 2 is a schematic top view of a workbench in a rail transit maintenance device according to an embodiment of the present invention, where a left fixed table and a right fixed table are parallel;
FIG. 3 is a schematic side view of a left fixed table in the rail transit maintenance device according to the embodiment of the present invention, in which the supporting member is disposed outside the accommodating groove;
FIG. 4 is a schematic top view of the connection between the bottom bar and the bottom plate in the rail transit maintenance device according to the embodiment of the present invention, wherein the supporting member is disposed in the accommodating groove;
fig. 5 is a schematic top view of a workbench in a rail transit maintenance device according to an embodiment of the invention, in which the left and right fixed tables are tilted.
Summarizing the reference numerals: the device comprises a frame 11, a workbench 12, a through groove 13, a left fixed table 14, a right fixed table 15, a punching machine 16, a compression roller 17, a top shaft 18, a fixed plate 19, a rotating wheel 20, a sliding chute 21, a sliding block 22, an outer frame 23, a bottom plate 24, a compression bolt 25, a top screw 26, a bottom strip 27, a top wire 28, a containing groove 29, a supporting piece 30, a pressing plate 31 and a supporting leg 32.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
See fig. 1-5 for an example.
The embodiment provides a track traffic maintenance device, can maintain, correct etc. work to the mechanical parts that uses in the track traffic through this kind of maintenance device, and its structural design is reasonable, is fit for the mechanical parts that uses in the track traffic, can bring convenience for maintenance work.
As shown in fig. 1, the rail transit maintenance device comprises a frame 11, wherein the frame 11 is provided with a workbench 12, a through groove 13 is formed in the middle of the workbench 12, a left fixing table 14 and a right fixing table 15 are arranged on the workbench 12, and the left fixing table 14 and the right fixing table 15 are respectively arranged on two sides of the through groove 13; a punching machine 16 is arranged on the frame 11, the punching machine 16 is provided with a pressing roller 17, and the pressing roller 17 is vertically arranged above the through groove 13; the machine frame 11 is further provided with a top shaft 18, the top shaft 18 is in threaded connection with the machine frame 11, the top shaft 18 is located right below the press roller 17, and the top shaft 18 is located below the workbench 12.
As shown in fig. 1, the frame 11 includes a fixing plate 19, the fixing plate 19 is disposed along a horizontal direction, the fixing plate 19 is located directly below the table 12, and the top shaft 18 is screwed to the fixing plate 19. The bottom end of the top shaft 18 is connected with a rotating wheel 20, and the rotating wheel 20 is located below the fixing plate 19.
As shown in fig. 2, the workbench 12 is provided with a chute 21, and the length direction of the chute 21 is perpendicular to the through slot 13; the bottoms of the left fixing table 14 and the right fixing table 15 are provided with sliding blocks 22, and the sliding blocks 22 are arranged in the sliding grooves 21 so that the left fixing table 14 and the right fixing table 15 can slide on the workbench 12.
As shown in fig. 3, the left fixing table 14 includes an outer frame 23 and a bottom plate 24, the outer frame 23 is in a shape of a loop, the bottom plate 24 is disposed at the bottom of the outer frame 23, and the bottom plate 24 is rotatably connected with the outer frame 23, so that the outer frame 23 can rotate along a vertical axis; the sliding block 22 is arranged at the bottom of the bottom plate 24; the top of the outer frame 23 is connected with a compression bolt 25 which is in threaded connection with the outer frame, and two sides of the outer frame 23 are provided with a jacking screw 26 which is in threaded connection with the outer frame.
As shown in fig. 3, the bottom of the outer frame 23 is a bottom strip 27, the bottom strip 27 is connected with the bottom plate 24, the bottom plate 24 is circular, the bottom strip 27 is provided with a top thread 28, and the bottom end of the top thread 28 is abutted against the bottom plate 24; the top of the bottom strip 27 is provided with a U-shaped accommodating groove 29, a U-shaped supporting piece 30 is arranged in the accommodating groove 29, and two sides of the supporting piece 30 are hinged with the accommodating groove 29; rotating the support 30 can rotate the support 30 to a vertical state and extend the support 30 to above the accommodating groove 29, and when the support 30 rotates to a vertical state, the height of the tightening screw 26 is higher than the top surface of the support 30.
As shown in fig. 3, a pressing plate 31 is connected to the bottom end of the pressing bolt 25, the pressing plate 31 is rotatably connected to the pressing bolt 25, and the bottom surface of the pressing plate 31 is arc-shaped.
As shown in fig. 1, the frame 11 includes a plurality of legs 32, the legs 32 are located below the table 12, and two ends of the fixing plate 19 are connected to the legs 32.
The frame 11 is a main body structure of the maintenance device, and the workbench 12 of the frame 11 is approximately positioned in the middle of the frame 11 and is suitable for the height of a human body. The through groove 13 formed in the middle of the table 12 allows the press roller 17 of the press 16 to have a space for downward movement, and allows the top shaft 18 at the bottom of the frame 11 to have a space for upward movement. And facilitate the staff to extend other maintenance tools into the location.
Two fixing tables are arranged on the workbench 12, and two ends or two parts of the mechanical component can be fixed through the two fixing tables, so that the mechanical component cannot shake in the maintenance process.
The frame 11 is provided with a punching machine 16, the punching machine 16 is a relatively existing device, and a pressing roller 17 of the punching machine 16 can provide pressure downwards to provide punching force for deformed mechanical parts so as to restore the deformed mechanical parts to original shape.
A top shaft 18 is also arranged below the frame 11, the top shaft 18 is arranged coaxially with the press roller 17, and the top shaft 18 and the press roller 17 can be matched for use. The top shaft 18 is screwed to the frame 11, so that the top shaft 18 can be adjusted upward, the top shaft 18 is adjusted to the lower side of the mechanical component, the press machine 16 is opened, the press roller 17 is made to apply pressure to the mechanical component from the upper side of the mechanical component, the press roller 17 and the top shaft 18 are made to clamp the mechanical component in the middle, and the mechanical component can be restored to the original state by pressing for a certain time or a plurality of times. Or the punching machine 16 is adjusted to press the pressing roller 17 on the upper surface of the mechanical component, then the top shaft 18 is screwed, the top shaft 18 moves downwards, the pressing roller 17 is pressed downwards in the process of downwards moving the top shaft 18, and the mechanical component can be restored to the original state more gently through the slower action.
A fixing plate 19 is provided below the frame 11, the fixing plate 19 being used for connecting the top shaft 18. Four supporting legs 32 are arranged below the workbench 12, the workbench 12 is supported at a higher position through the supporting legs 32, two transverse plates are connected between the supporting legs 32, two ends of the fixing plate 19 are connected to the two transverse plates, the fixing plate 19 is basically positioned at a middle position, and the top shaft 18 can be positioned under the compression roller 17.
The rotating wheel 20 is arranged at the bottom end of the top shaft 18, and the rotating wheel 20 can drive the top shaft 18 to rotate, so that the rotation of the top shaft 18 is labor-saving.
The sliding groove 21 is arranged on the workbench 12, and the two fixed tables are in sliding connection with the workbench 12, so that the distance between the two fixed tables can be adjusted during use, the maintenance device can adapt to mechanical parts with different lengths, and the application range of the maintenance device is wider.
In the embodiment, the structures of the left fixing table 14 and the right fixing table 15 are basically consistent, so that the connection of mechanical parts is facilitated; and the left fixed table 14 and the right fixed table 15 are symmetrically arranged, so that the mechanical parts are relatively stable after being connected.
The left fixing base 14 is configured by the outer frame 23 and the bottom plate 24, so that the mechanical components can be conveniently connected, and the fixing base can be fixedly connected with mechanical components with various different shapes, such as plate-shaped, strip-shaped, cylindrical, circular arc-shaped and the like.
The outer frame 23 has a loop-shaped structure, and the end of the machine member can be inserted into the outer frame 23, and the end of the machine member is fixed by the pressing bolt 25, the pressing screw 26, and the like. The bottom plate 24 sets up in the bottom of frame 23, and bottom plate 24 and frame 23 rotate to be connected for frame 23 can rotate for bottom plate 24, can adjust the angle of frame 23 according to the shape of mechanical parts when connecting mechanical parts, makes two fixed stations cooperate better, more stably carries out the centre gripping with mechanical parts.
As shown in fig. 5, the two fixed tables are adjusted to be inclined, so that the circular arc-shaped mechanical member can be connected between the two fixed tables, and the mechanical member having such a structure can be stably connected to the table 12.
A pressing bolt 25 is provided at the top of the outer frame 23, and the end of the mechanical member can be pressed against the bottom of the outer frame 23 by the pressing bolt 25; the supporting screws 26 are arranged on two sides of the outer frame 23, and for some parts with complex structures or difficult to fix, the supporting screws 26 on the side parts can be used, so that the supporting screws 26 support the mechanical parts from the side parts. Such as a cylindrical member.
The bottom bar 27 is a structural member of the bottom of the outer frame 23, and the bottom plate 24 is provided in a circular shape so that the outer frame 23 can be easily rotated around an axis, and the forces between the outer frame 23 and the bottom plate 24 after the rotation are relatively balanced. The jackscrews 28 are arranged on the bottom strip 27, and the jackscrews 28 are screwed to enable the bottoms of the jackscrews 28 to be abutted against the bottom plate 24, so that the outer frame 23 and the bottom strip 27 can be clamped tightly, and the outer frame 23 can be kept at the position without shaking. Since the bottom plate 24 is circular, the top threads 28 can always touch the bottom plate 24 regardless of the rotation of the outer frame 23.
The accommodating groove and the supporting member 30 are arranged at the top of the bottom strip 27, so that the size range of the mechanical parts connected in the fixed table is wider, and the rail transit can be better suitable.
The holding groove 29 is offered at the top of sill bar 27, sets up support piece 30 in the holding groove 29, and its top can not extend to the top of sill bar 27 when support piece 30 holds in holding groove 29 for the top of sill bar 27 is comparatively level and smooth, makes platelike mechanical parts can place at the top of sill bar 27 steadily.
When smaller components are required to be connected in the fixing table, the support 30 is turned over to be above the accommodating groove 29, so that the support 30 is vertically arranged to have a certain height, the end of the mechanical component can be placed at a higher position, the distance between the bottom end of the compression bolt 25 and the top of the support 30 is relatively short, and the compression bolt 25 can compress the end of the mechanical component on the support 30 in a relatively short stroke. In addition, the support 30 is turned out of the receiving groove 29, so that a number of irregularly shaped parts, for example structural members having an H-shaped cross section, can be placed in the fixing table. And when the supporting member 30 is in a vertical state (i.e. turned to the outside of the accommodating groove 29), the height of the jacking screw 26 is still located above the top surface of the supporting member 30, so that the jacking screw 26 can play a role in jacking mechanical components on the supporting member 30 from the side, and the end parts of the mechanical components are firmly fixed on the fixed table through the cooperation of the compression bolts 25, the jacking screw 26 and the supporting member 30.
The bottom end of the compression bolt 25 is provided with a pressing plate 31, and the top surface of the mechanical component is compressed by the pressing plate 31. And the bottom surface of clamp plate 31 sets up to the arc for clamp plate 31 can compress tightly the curved part on support 30, ensures that circular part can not rock.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The rail transit maintenance device is characterized by comprising a frame, wherein the frame is provided with a workbench, a through groove is formed in the middle of the workbench, a left fixing table and a right fixing table are arranged on the workbench, and the left fixing table and the right fixing table are respectively arranged on two sides of the through groove; the machine frame is provided with a punching machine which is provided with a pressing roller, and the pressing roller is vertically arranged above the through groove; the machine frame is also provided with a top shaft which is in threaded connection with the machine frame, the top shaft is positioned right below the press roller, and the top shaft is positioned below the workbench;
the workbench is provided with a chute, and the length direction of the chute is perpendicular to the through groove; the bottoms of the left fixing table and the right fixing table are provided with sliding blocks, and the sliding blocks are arranged in the sliding grooves so that the left fixing table and the right fixing table can slide on the workbench;
the left fixed table comprises an outer frame and a bottom plate, the outer frame is in a shape of a circle, the bottom plate is arranged at the bottom of the outer frame, and the bottom plate is rotationally connected with the outer frame, so that the outer frame can rotate along a vertical axis; the sliding block is arranged at the bottom of the bottom plate; the top of the outer frame is connected with a compression bolt in threaded connection with the outer frame, and two sides of the outer frame are provided with a jacking screw in threaded connection with the outer frame;
the bottom of the outer frame is a bottom strip, the bottom strip is connected with the bottom plate, the bottom plate is round, jackscrews are arranged on the bottom strip, and the bottom ends of the jackscrews are abutted against the bottom plate; the top of the bottom strip is provided with a U-shaped accommodating groove, a U-shaped supporting piece is arranged in the accommodating groove, and two sides of the supporting piece are hinged with the accommodating groove; the supporting piece is rotated to enable the supporting piece to be rotated to a vertical state and extend to the upper side of the accommodating groove, and when the supporting piece is rotated to the vertical state, the height of the jacking screw is higher than the top surface of the supporting piece;
the frame comprises a fixed plate, the fixed plate is arranged along the horizontal direction, the fixed plate is positioned right below the workbench, and the top shaft is in threaded connection with the fixed plate;
the bottom end part of the top shaft is connected with a rotating wheel, and the rotating wheel is positioned below the fixed plate; the bottom end of the compression bolt is connected with a pressing plate, the pressing plate is rotationally connected with the compression bolt, and the bottom surface of the pressing plate is arc-shaped.
2. The rail transit maintenance device of claim 1, wherein the frame includes a plurality of legs positioned below the table, and both ends of the fixing plate are connected to the legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643816.4A CN108746256B (en) | 2018-06-21 | 2018-06-21 | Rail transit maintenance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643816.4A CN108746256B (en) | 2018-06-21 | 2018-06-21 | Rail transit maintenance device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108746256A CN108746256A (en) | 2018-11-06 |
| CN108746256B true CN108746256B (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810643816.4A Active CN108746256B (en) | 2018-06-21 | 2018-06-21 | Rail transit maintenance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108746256B (en) |
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| CN202638972U (en) * | 2012-05-28 | 2013-01-02 | 天津市天锻压力机有限公司 | Positioning control device of automatic straightening hydraulic machine workpiece detection head |
| CN104307930A (en) * | 2014-10-23 | 2015-01-28 | 美信佳集团建设有限公司 | Construction corrector of hollow steel tubes |
| CN106625467A (en) * | 2017-01-06 | 2017-05-10 | 成都聚立汇信科技有限公司 | LED display screen maintenance working table |
| CN107009155A (en) * | 2017-05-24 | 2017-08-04 | 江苏皓羿机械制造科技有限公司 | A kind of machining workbench |
| CN206527181U (en) * | 2017-01-26 | 2017-09-29 | 李雪丽 | It is a kind of that there is the infrared construction coalignment accurately measured |
| CN107335692A (en) * | 2017-07-26 | 2017-11-10 | 吴秀女 | A kind of decorative panel for building double-side efficient apparatus for shaping |
| CN107443124A (en) * | 2017-09-25 | 2017-12-08 | 无锡智谷锐拓技术服务有限公司 | A kind of sheet fabrication fixing device |
| CN207386225U (en) * | 2017-09-07 | 2018-05-22 | 新兴铸管股份有限公司 | A kind of cast tube centrifugal machine launder apparatus for correcting |
| CN208375256U (en) * | 2018-06-21 | 2019-01-15 | 江苏远致达轨道交通发展有限公司 | A kind of rail traffic enclosed structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0203788D0 (en) * | 2002-02-19 | 2002-04-03 | Kent Frank M J | The folding of a clamping table |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202638972U (en) * | 2012-05-28 | 2013-01-02 | 天津市天锻压力机有限公司 | Positioning control device of automatic straightening hydraulic machine workpiece detection head |
| CN104307930A (en) * | 2014-10-23 | 2015-01-28 | 美信佳集团建设有限公司 | Construction corrector of hollow steel tubes |
| CN106625467A (en) * | 2017-01-06 | 2017-05-10 | 成都聚立汇信科技有限公司 | LED display screen maintenance working table |
| CN206527181U (en) * | 2017-01-26 | 2017-09-29 | 李雪丽 | It is a kind of that there is the infrared construction coalignment accurately measured |
| CN107009155A (en) * | 2017-05-24 | 2017-08-04 | 江苏皓羿机械制造科技有限公司 | A kind of machining workbench |
| CN107335692A (en) * | 2017-07-26 | 2017-11-10 | 吴秀女 | A kind of decorative panel for building double-side efficient apparatus for shaping |
| CN207386225U (en) * | 2017-09-07 | 2018-05-22 | 新兴铸管股份有限公司 | A kind of cast tube centrifugal machine launder apparatus for correcting |
| CN107443124A (en) * | 2017-09-25 | 2017-12-08 | 无锡智谷锐拓技术服务有限公司 | A kind of sheet fabrication fixing device |
| CN208375256U (en) * | 2018-06-21 | 2019-01-15 | 江苏远致达轨道交通发展有限公司 | A kind of rail traffic enclosed structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108746256A (en) | 2018-11-06 |
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