CN110900048A - Welding equipment for solar vacuum tube connecting frame - Google Patents
Welding equipment for solar vacuum tube connecting frame Download PDFInfo
- Publication number
- CN110900048A CN110900048A CN201911286877.0A CN201911286877A CN110900048A CN 110900048 A CN110900048 A CN 110900048A CN 201911286877 A CN201911286877 A CN 201911286877A CN 110900048 A CN110900048 A CN 110900048A
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- Prior art keywords
- nut
- vacuum tube
- tube connecting
- rod
- frame
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses welding equipment for a solar vacuum tube connecting frame, which structurally comprises a rack, an adjusting structure, rolling rollers, a welding device, a pressing roller, a fixed rod and a bracket, wherein the rolling rollers which are uniformly distributed into a row are arranged on the bottom surface inside the rack, the welding device is fixed in the middle of the rack, the fixed rod is connected between two sides of the welding device and the rack, the pressing roller is arranged above the rolling rollers and is arranged on the fixed rod, the adjusting structure is respectively arranged on two sides inside the rack, the bracket is connected on the right side of the rack, the pressing roller comprises a top plate, a spring rod, a spring, a wheel carrier and a roller, the top plate is arranged above the fixed rod, the top of the spring rod is vertically connected with the top plate, and the bottom of the: the vacuum tube connecting frame is compressed tightly by the force of pressing down through the spring instead of a cylinder body, so that the cost of equipment is reduced, the vacuum tube connecting frames with different sizes can be fixed through the relative movement of the nuts on the two sides, and the application range of the equipment is widened.
Description
Technical Field
The invention relates to the field of welding equipment, in particular to welding equipment for a solar vacuum tube connecting frame.
Background
The welding machine equipment can weld two metal workpieces to enable the two metal workpieces to be connected together, and the solar vacuum tube connecting frame needs to be bent firstly after punching is completed and then welded after bending is completed.
The existing welding equipment for the solar vacuum tube connecting frame is characterized in that a left roller and a right roller are adopted to clamp and roll, the top portion of the welding equipment is limited by the rollers for the solar vacuum tube connecting frame, the solar vacuum tube connecting frame is in a square tube shape, the height of the top roller needs to be adjusted through a cylinder body according to different sizes of the solar vacuum tube connecting frame, the equipment cost is high, the rollers on the left side and the right side are fixed, the roller cannot be adjusted according to the size of the solar vacuum tube connecting frame, and the welding equipment can only be used for the solar vacuum tube connecting frame with the same size.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provide welding equipment for a solar vacuum tube connecting frame.
The invention is realized by adopting the following technical scheme: the utility model provides a welding equipment of solar energy vacuum tube link, its structure includes frame, adjustment structure, rolls roller, welding ware, pinch roller, dead lever, bracket, the inside bottom surface of frame is equipped with evenly distributed becomes one row of roll roller, the welding ware is fixed in the middle of the frame, be connected with the dead lever between the both sides of welding ware and the frame, the pinch roller is established and is being established in roll roller top and install on the dead lever, the adjustment structure is installed respectively to the inside both sides of frame, the bracket connection is on the frame right side.
As an optimization, the pinch roller comprises a top plate, a spring rod, a spring, a wheel carrier and a roller, wherein the top plate is arranged above the fixed rod, the top of the spring rod is vertically connected with the top plate, the bottom of the spring rod penetrates through the fixed rod to be connected with the wheel carrier, the roller is arranged on the wheel carrier, and the spring is arranged between the fixed rod and the wheel carrier and sleeved on the spring rod.
Preferably, the adjusting structure comprises a power device, a screw, a movable nut pair and a bearing, the top of the screw is connected to the top of the rack through the bearing, the bottom of the screw is movably connected with the power device through the bearing, and the movable nut pair is installed on the screw.
As an optimization, the movable nut pair comprises a through hole, a first nut, a penetrating rod, a second nut and a fixed rod, the first nut and the second nut are distributed at the upper end and the lower end of the screw rod in a mirror image mode, the first nut and the second nut are connected with the screw rod through threads, the first nut is provided with 2 through holes which penetrate up and down, the penetrating rod is arranged in the through hole, the bottom of the penetrating rod is connected with the second nut, and the bottom of the second nut is connected with the fixed rod.
Preferably, the power device comprises a driven wheel, a belt, a driving wheel and a motor, wherein the motor is connected with the driving wheel, and the driving wheel is in transmission connection with the driven wheel through the belt.
As optimization, a cavity is arranged in the driven wheel, a micro motor is arranged in the cavity and connected with the bottom of the screw rod, and a through hole is formed in the side face of the cavity of the driven wheel and is penetrated by the fixing rod.
Preferably, the screw is divided into an upper part and a lower part by a midpoint, the upper part threads are opposite to the lower part threads in direction, the upper part threads are matched with the first nut, and the lower part threads are matched with the second nut in direction.
As optimization, the first nut and the second nut are consistent in structure size and distributed in a vertically mirror image mode, the first nut is wide at the top and narrow at the bottom, and the second nut is narrow at the top and wide at the bottom.
And optimally, the outer sides of the first nut and the second nut are provided with silica gel layers.
Advantageous effects
When the invention works, the vacuum tube connecting frame is placed on the roller, the pressing wheel can press the vacuum tube connecting frame downwards due to the spring, so that the vacuum tube connecting frame is fixed between the roller and the roller, the roller and the roller can roll, the vacuum tube connecting frame is convenient to move, the vacuum tube connecting frame is prevented from being worn, the adjusting structures at the two sides of the vacuum tube connecting frame can clamp the two sides of the vacuum tube connecting frame and drive the vacuum tube connecting frame to be butted through the welding device, when the adjusting structures clamp the vacuum tube connecting frame, the size of the vacuum tube connecting frame is inconsistent, therefore, the micromotor is started to drive the screw rod to rotate, as the second nut is connected with the driven wheel through the fixing rod, the axial position of the second nut and the driven wheel can be kept fixed, and the second nut is connected with the first nut through the penetrating rod, therefore, the axial positions of the second nut and the first nut can be kept fixed, and therefore, when the driven wheel does not rotate, the first nut and the second nut also keep not rotating, when the screw rotates, the first nut and the second nut can simultaneously move towards the middle under the condition of keeping the axial positions unchanged due to the fact that the upper threads are opposite to the lower threads, until the first nut and the second nut simultaneously contact the upper end and the lower end of the vacuum tube connecting frame, the two sides of the vacuum tube connecting frame can be fixed, then the motor drives the driven wheel to rotate through the belt, and the first nut and the second nut rotate to drive the vacuum tube connecting frame to move for butt joint work.
Compared with the prior art, the invention has the beneficial effects that: the vacuum tube connecting frame is compressed tightly by the force of pressing down through the spring instead of a cylinder body, so that the cost of equipment is reduced, the vacuum tube connecting frames with different sizes can be fixed through the relative movement of the nuts on the two sides, and the application range of the equipment is widened.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a top view of a welding device for a solar vacuum tube connecting rack of the present invention.
Figure 2 is a front view of the puck of the present invention.
Fig. 3 is a side view of the adjustment structure of the present invention.
Fig. 4 is a schematic structural diagram of the power device of the invention.
Fig. 5 is a cross-sectional view of the driven wheel of the present invention.
In the figure: the welding machine comprises a frame 1, an adjusting structure 2, a roller 3, a welder 4, a pinch roller 5, a fixed rod 6, a bracket 7, a top plate 50, a spring rod 51, a spring 52, a wheel carrier 53, a roller 54, a power device 20, a screw 21, a movable nut pair 22, a bearing 23, a through hole 220, a first nut 221, a penetrating rod 222, a second nut 223, a fixed rod 224, a driven wheel 20a, a belt 20b, a driving wheel 20c, a motor 20d, a micro motor a1 and a through hole a 2.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the present invention provides a technical solution of a welding device for a solar vacuum tube connection frame: its structure includes frame 1, adjustment structure 2, rolls roller 3, welder 4, pinch roller 5, dead lever 6, bracket 7, 1 inside bottom surface of frame is equipped with evenly distributed and becomes one row of roller 3, welder 4 fixes in the middle of frame 1, be connected with dead lever 6 between welder 4's both sides and the frame 1, pinch roller 5 is establishing and is rolling 3 tops of roller and install on dead lever 6, adjustment structure 2 is installed respectively to 1 inside both sides of frame, bracket 7 is connected on 1 right side of frame.
The pinch roller 5 comprises a top plate 50, a spring rod 51, a spring 52, a wheel frame 53 and a roller 54, wherein the top plate 50 is arranged above the fixing rod 6, the top of the spring rod 51 is vertically connected with the top plate 50, the bottom of the spring rod 51 penetrates through the fixing rod 6 to be connected with the wheel frame 53, the roller 54 is arranged on the wheel frame 53, the spring 52 is arranged between the fixing rod 6 and the wheel frame 53 and sleeved on the spring rod 51, and the roller 54 can roll to facilitate the movement of the vacuum tube connecting frame.
The working principle is as follows: the during operation is placed vacuum tube link on the roller 3, pinch roller 5 is owing to be equipped with spring 52, can push down the vacuum tube link, make the vacuum tube link fix between roller 3 and gyro wheel 54, roller 3 can roll with gyro wheel 54, the vacuum tube link of being convenient for removes, avoid causing wearing and tearing to the vacuum tube link, and the adjustment structure 2 of vacuum tube link both sides can press from both sides the vacuum tube link both sides tightly and drive the vacuum tube link and dock, weld through welder 4.
Example 2
Referring to fig. 1-5, the present invention provides a technical solution of a welding device for a solar vacuum tube connection frame: its structure includes frame 1, adjustment structure 2, rolls roller 3, welder 4, pinch roller 5, dead lever 6, bracket 7, 1 inside bottom surface of frame is equipped with evenly distributed and becomes one row of roller 3, welder 4 fixes in the middle of frame 1, be connected with dead lever 6 between welder 4's both sides and the frame 1, pinch roller 5 is establishing and is rolling 3 tops of roller and install on dead lever 6, adjustment structure 2 is installed respectively to 1 inside both sides of frame, bracket 7 is connected on 1 right side of frame.
The pinch roller 5 comprises a top plate 50, a spring rod 51, a spring 52, a wheel frame 53 and a roller 54, wherein the top plate 50 is arranged above the fixing rod 6, the top of the spring rod 51 is vertically connected with the top plate 50, the bottom of the spring rod 51 penetrates through the fixing rod 6 to be connected with the wheel frame 53, the roller 54 is arranged on the wheel frame 53, and the spring 52 is arranged between the fixing rod 6 and the wheel frame 53 and sleeved on the spring rod 51.
The adjusting structure 2 comprises a power device 20, a screw 21, a movable nut pair 22 and a bearing 23, the top of the screw 21 is connected to the top of the inside of the frame 1 through the bearing 23, the bottom of the screw is movably connected with the power device 20 through the bearing 23, the movable nut pair 22 is installed on the screw 21, and the power device 20 drives the screw 21 to rotate, so that the movable nut pair 22 clamps the vacuum tube connecting frame.
The movable nut pair 22 comprises a through hole 220, a first nut 221, a penetrating rod 222, a second nut 223 and a fixing rod 224, the first nut 221 and the second nut 223 are distributed at the upper end and the lower end of the screw rod 21 in a mirror image mode, the first nut 221 and the second nut 223 are connected with the screw rod 21 through threads, the first nut 221 is provided with 2 through holes 220 penetrating from top to bottom, the penetrating rod 222 is arranged in the through hole 220, the bottom of the penetrating rod 222 is connected with the second nut 223, the bottom of the second nut 223 is connected with the fixing rod 224, the axial positions of the first nut 221 and the second nut 223 can be fixed through 2 penetrating rods 222, and the axial positions of the first nut 221 and the second nut 223 are kept consistent.
The power device 20 comprises a driven wheel 20a, a belt 20b, a driving wheel 20c and a motor 20d, wherein the motor 20d is connected with the driving wheel 20c, the driving wheel 20c is in transmission connection with the driven wheel 20a through the belt 20b, and the motor 20d can be buffered through transmission of power through the belt 20 b.
The driven wheel 20a is internally provided with a cavity, a micro motor a1 is installed in the cavity, the micro motor a1 is connected with the bottom of the screw rod 21, the side surface of the cavity of the driven wheel 20a is provided with a through hole a2, the through hole a2 is penetrated by the fixing rod 224, and the axial position between the driven wheel 20a and the second nut 223 can be fixed through the fixing rod 224.
The screw 21 is divided into upper and lower portions at a midpoint, and the upper portion screw thread and the lower portion screw thread are opposite in direction, the upper portion screw thread is engaged with the first nut 221, and the lower portion screw thread is engaged with the second nut 223, so that the first nut 221 and the second nut 223 can be moved relatively.
The first nut 221 and the second nut 223 are identical in structure size and distributed in a vertical mirror image mode, the first nut 221 is wide at the top and narrow at the bottom, the second nut 223 is narrow at the top and wide at the bottom, and the square pipes with different sizes can be clamped through relative movement of the first nut 221 and the second nut 223.
The outer sides of the first nut 221 and the second nut 223 are provided with silica gel layers, so that friction force between the first nut 221 and the vacuum tube connecting frame can be increased, and the vacuum tube connecting frame can be better driven to move.
The working principle is as follows: based on embodiment 1, when the vacuum clamp is clamped by the adjustment structure 2, the vacuum clamp is not of the same size, so the micro motor a1 is started to drive the screw 21 to rotate, the second nut 223 is connected to the driven wheel 20a through the fixing rod 224, the axial positions of the second nut 223 and the driven wheel 20a can be kept fixed, and the second nut 223 is connected to the first nut 221 through the penetrating rod 222, so the axial positions of the second nut 223 and the first nut 221 can be kept fixed, therefore, when the driven wheel 20a is not rotated, the first nut 221 and the second nut 223 are also kept not rotated, when the screw 21 is rotated, the upper thread and the lower thread are opposite, the first nut 221 and the second nut 223 can be moved to the middle simultaneously while keeping the axial positions unchanged, until the first nut 221, The second nut 223 contacts the upper and lower ends of the vacuum tube connecting frame at the same time, so that the two sides of the vacuum tube connecting frame can be fixed, and then the motor 20d drives the driven wheel 20a to rotate through the belt 20b, so that the first nut 221 and the second nut 223 rotate to drive the vacuum tube connecting frame to move for butt joint work.
Compared with the prior art, the invention has the technical progress that: the vacuum tube connecting frame is compressed tightly by the force of pressing down through the spring instead of a cylinder body, so that the cost of equipment is reduced, the vacuum tube connecting frames with different sizes can be fixed through the relative movement of the nuts on the two sides, and the application range of the equipment is widened.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a welding equipment of solar energy vacuum tube link, its structure includes frame (1), adjustment structure (2), roller (3), welding ware (4), pinch roller (5), dead lever (6), bracket (7), its characterized in that: frame (1) inside bottom surface is equipped with evenly distributed becomes one row and rolls roller (3), welder (4) are fixed in the middle of frame (1), be connected with dead lever (6) between the both sides of welder (4) and frame (1), pinch roller (5) are established and are being established and are rolling roller (3) top and install on dead lever (6), adjustment structure (2) are installed respectively to frame (1) inside both sides, bracket (7) are connected on frame (1) right side.
2. The welding device for the solar vacuum tube connecting rack as claimed in claim 1, wherein: pinch roller (5) include roof (50), spring beam (51), spring (52), wheel carrier (53), gyro wheel (54), roof (50) are established in dead lever (6) top, spring beam (51) top is connected with roof (50) are perpendicular, dead lever (6) are passed to spring beam (51) bottom and are connected with wheel carrier (53), gyro wheel (54) are installed on wheel carrier (53), spring (52) are established between dead lever (6) and wheel carrier (53) and are established on spring beam (51).
3. The welding device for the solar vacuum tube connecting rack as claimed in claim 1, wherein: the adjusting structure (2) comprises a power device (20), a screw rod (21), a movable nut pair (22) and a bearing (23), the top of the screw rod (21) is connected to the top of the rack (1) through the bearing (23), the bottom of the screw rod is movably connected with the power device (20) through the bearing (23), and the movable nut pair (22) is installed on the screw rod (21).
4. The welding device for the solar vacuum tube connecting rack as claimed in claim 3, wherein: the movable nut pair (22) comprises a through hole (220), a first nut (221), a penetrating rod (222), a second nut (223) and a fixing rod (224), the first nut (221) and the second nut (223) are distributed at the upper end and the lower end of the screw rod (21) in a mirror image mode, the first nut (221), the second nut (223) and the screw rod (21) are connected through threads, the first nut (221) is provided with 2 through holes (220) which penetrate through the screw rod from top to bottom, the penetrating rod (222) is arranged in the through hole (220), the bottom of the penetrating rod (222) is connected with the second nut (223), and the bottom of the second nut (223) is connected with the fixing rod (224).
5. The welding device for the solar vacuum tube connecting rack as claimed in claim 3, wherein: the power device (20) comprises a driven wheel (20 a), a belt (20 b), a driving wheel (20 c) and a motor (20 d), wherein the motor (20 d) is connected with the driving wheel (20 c), and the driving wheel (20 c) is in transmission connection with the driven wheel (20 a) through the belt (20 b).
6. The welding device for the solar vacuum tube connecting rack of claim 5, wherein: the driven wheel (20 a) is internally provided with a cavity, a micro motor (a 1) is installed in the cavity, the micro motor (a 1) is connected with the bottom of the screw rod (21), the side face of the cavity of the driven wheel (20 a) is provided with a through hole (a 2), and the through hole (a 2) is penetrated by the fixing rod (224).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911286877.0A CN110900048A (en) | 2019-12-14 | 2019-12-14 | Welding equipment for solar vacuum tube connecting frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911286877.0A CN110900048A (en) | 2019-12-14 | 2019-12-14 | Welding equipment for solar vacuum tube connecting frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110900048A true CN110900048A (en) | 2020-03-24 |
Family
ID=69825754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911286877.0A Withdrawn CN110900048A (en) | 2019-12-14 | 2019-12-14 | Welding equipment for solar vacuum tube connecting frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110900048A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2702690A1 (en) * | 1993-03-15 | 1994-09-23 | Clapot Hubert | Driving of a tube, by means of rollers, in a variable-speed circular movement in order to produce cuts of various shapes and angles |
| CN205237401U (en) * | 2015-12-22 | 2016-05-18 | 秦皇岛市道天高科技有限公司 | Clamping device of core drill base member base and connecting cylinder welding usefulness |
| CN206795147U (en) * | 2017-06-20 | 2017-12-26 | 四川信息职业技术学院 | A kind of welding of mechanical part is with gripping location structure |
| CN207695929U (en) * | 2017-12-13 | 2018-08-07 | 桐乡聚业钢结构有限公司 | Machine is found convenient for the H profile steel group of positioning |
| CN109277767A (en) * | 2018-10-11 | 2019-01-29 | 安徽明光中兴阳光新能源科技有限公司 | A kind of wall-hanging solar water heater thermal-arrest copper pipe welding equipment |
| CN208513958U (en) * | 2018-07-04 | 2019-02-19 | 深圳市金永鑫精密五金制品有限公司 | A kind of combined type automatic assembling machine structure |
| CN208513955U (en) * | 2018-06-30 | 2019-02-19 | 海宁市太阳风新能源有限公司 | A kind of welding equipment of solar energy vacuum tube connection frame |
| CN208961376U (en) * | 2018-09-13 | 2019-06-11 | 仪征市永辉散热管制造有限公司 | Jig is used in a kind of welding of tubing |
| CN209532507U (en) * | 2018-12-19 | 2019-10-25 | 中铁工程装备集团钢结构有限公司 | The H profile steel group quickly positioned founds machine |
-
2019
- 2019-12-14 CN CN201911286877.0A patent/CN110900048A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2702690A1 (en) * | 1993-03-15 | 1994-09-23 | Clapot Hubert | Driving of a tube, by means of rollers, in a variable-speed circular movement in order to produce cuts of various shapes and angles |
| CN205237401U (en) * | 2015-12-22 | 2016-05-18 | 秦皇岛市道天高科技有限公司 | Clamping device of core drill base member base and connecting cylinder welding usefulness |
| CN206795147U (en) * | 2017-06-20 | 2017-12-26 | 四川信息职业技术学院 | A kind of welding of mechanical part is with gripping location structure |
| CN207695929U (en) * | 2017-12-13 | 2018-08-07 | 桐乡聚业钢结构有限公司 | Machine is found convenient for the H profile steel group of positioning |
| CN208513955U (en) * | 2018-06-30 | 2019-02-19 | 海宁市太阳风新能源有限公司 | A kind of welding equipment of solar energy vacuum tube connection frame |
| CN208513958U (en) * | 2018-07-04 | 2019-02-19 | 深圳市金永鑫精密五金制品有限公司 | A kind of combined type automatic assembling machine structure |
| CN208961376U (en) * | 2018-09-13 | 2019-06-11 | 仪征市永辉散热管制造有限公司 | Jig is used in a kind of welding of tubing |
| CN109277767A (en) * | 2018-10-11 | 2019-01-29 | 安徽明光中兴阳光新能源科技有限公司 | A kind of wall-hanging solar water heater thermal-arrest copper pipe welding equipment |
| CN209532507U (en) * | 2018-12-19 | 2019-10-25 | 中铁工程装备集团钢结构有限公司 | The H profile steel group quickly positioned founds machine |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200324 |
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| WW01 | Invention patent application withdrawn after publication |