CN105598627A - Automatic tailor-welding tool for reel sprinkler underbed - Google Patents
Automatic tailor-welding tool for reel sprinkler underbed Download PDFInfo
- Publication number
- CN105598627A CN105598627A CN201610092699.8A CN201610092699A CN105598627A CN 105598627 A CN105598627 A CN 105598627A CN 201610092699 A CN201610092699 A CN 201610092699A CN 105598627 A CN105598627 A CN 105598627A
- Authority
- CN
- China
- Prior art keywords
- underframe
- reel
- sprinkler
- workpiece
- control
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- 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.)
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Classifications
-
- 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
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
-
- 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
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0252—Steering means
-
- 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
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention discloses an automatic tailor-welding tool for a reel sprinkler underbed. The automatic tailor-welding tool comprises a supporting underbed (1), turnover shafts (2), a workpiece supporting part (3), a welding mechanical arm (4) and an electric control device (5), wherein the supporting underbed is fixedly installed on the ground, the turnover shafts are installed on the inner side faces of the upper portion of the supporting underbed, and at least one turnover shaft is provided with a turnover driving device (21); the two ends of the workpiece supporting part are fixedly connected with the turnover shafts respectively, the workpiece supporting part comprises a workpiece supporting plate (31) of a flat plate structure, multiple pressing devices (32), multiple locating devices (33) and a hollow groove-type structure are arranged on the upper surface of the workpiece supporting plate, and the electric control device comprises an industrial control computer respectively and electrically connected with the turnover driving device and the welding mechanical arm. The automatic tailor-welding tool for the reel sprinkler underbed can achieve automatic operation, the influence on production schedule of the reel underbed by human factors is reduced, production efficiency is high, and meanwhile the tailor-welding quality of the reel underbed can be ensured.
Description
Technical field
The present invention relates to a kind of tailor-welding tool, specifically a kind of automatic butt welding frock of sprinkler with reel underframe, belongs to sprinkling irrigation equipment equipment technology field.
Background technology
Sprinkling irrigation is to utilize the special equipments such as shower nozzle that pressure water is sprayed onto in the air, and formation water droplet is fallen the irrigation method of ground spray and filling surface and crop surface, and irrigation sprinkler claims again sprayirrigation, sprinkling irrigation unit, the special equipment that sprinkling irrigation adopts.
Reel sprinkling irrigation machine is one more common in irrigation sprinkler, that traction PE pipe is wrapped on capstan winch, utilizes Irrigation Pressure water-driven gearbox to drive capstan winch rotation, and draw the irrigation machinery of shower nozzle car automated movement and sprinkling, sprinkler with reel can be irrigated large-area farmland, also can be according to the size of shower nozzle control injection flow rate, to meet the different requirements of user to the sprinkling irrigation water yield, it is the sprinkling irrigation equipment that farmland water-saving irrigation is selected conventionally.
The underframe of reel sprinkling irrigation machine is as load bearing component, the parts such as wheel, reel, control cabinet are all arranged on underframe, the triangle that underframe is normally welded into by shaped steel such as channel-section steels or rectangular frame structure, generally include main frame beam and support and connection beam, for ensureing enough support strengths, conventionally underframe is more abundant, quality is heavier, and weld seam welding requirements and quality requirement are higher, spell point and welding process in for preventing that welding deformation from need to repeatedly overturn conventionally, and conventionally adopting manual operation welding, there is following defect in this traditional processing mode:
1. underframe overturns in spelling point and welding process needs to adopt crane gear to overturn conventionally, and switching process operating personnel not only labour intensity are large, and underframe workpiece has the risk of colliding with and being out of shape and falling apart in switching process;
2. manually spell a little and welding operation owing to adopting, therefore operating personnel's the human factor such as sense of responsibility, mood is larger on the impact of manufacturing schedule, and automation degree of equipment is low, and utilization rate of equipment and installations is low, and production capacity can not ensure;
3. artificial spell point, technical ability and the qualification of welding operation to operating personnel had relatively high expectations, multiple operating personnel's skilled operation degree is uneven is also affecting manufacturing schedule in varying degrees, and easily causes unstable product quality.
Summary of the invention
For the problems referred to above, the invention provides a kind of sprinkler with reel underframe automatic butt welding frock, can realize automation mechanized operation, reduce the impact of human factor on reel underframe manufacturing schedule, production efficiency is high, can ensure the welding quality of reel underframe simultaneously.
For achieving the above object, this sprinkler with reel underframe automatic butt welding frock comprises support underframe, trip shaft, workpiece support parts, electroplating equipment wielding machine arm and electric control gear;
It is two that described support underframe is symmetrical arranged, be fixedly installed in ground;
Described trip shaft is set to two, and two trip shafts arrange with one heart, and one end of two trip shafts is arranged on the upper inner face of support underframe by bearing block, and at least one trip shaft is provided with and is arranged on support underframe or ground overturning drive device;
The two ends of described workpiece support parts are fixedly connected with the other end of trip shaft respectively, comprise the workpiece supporting plate of disk slab construction, on the upper surface of workpiece supporting plate, be along the circumferential direction provided with multiple hold down gags and positioner, hold down gag comprises the supporting seat being fixedly mounted on workpiece supporting plate, be arranged on the pushing handle telescopic control mechanism on supporting seat and be arranged on the pressure head on pushing handle telescopic control mechanism telescopic end, positioner comprises centring ring detent mechanism, brace rod detent mechanism, backplate detent mechanism and center support board positioning mechanism, on workpiece supporting plate, the position of corresponding underframe lateral surface weld seam is also provided with the trench structure of hollow out,
Described electroplating equipment wielding machine arm fixedly mounts on the ground or on support underframe, comprises coordinate control mechanism and the welding gun that is arranged on end;
Described electric control gear comprises industrial control computer, electric power loop, spelling point control loop, upset control loop and welding control loop, and industrial control computer is electrically connected with overturning drive device and electroplating equipment wielding machine arm respectively.
As one embodiment of the present invention, described overturning drive device comprises motor and gearbox, the output shaft of motor is fixedly connected with the power shaft of gearbox, the output shaft of gearbox is connected with trip shaft by bindiny mechanism, and the industrial control computer of described electric control gear is connected with the electric electromechanics of overturning drive device.
As another embodiment of the invention, this sprinkler with reel underframe automatic butt welding frock also comprises hydraulic power unit, hydraulic power unit comprises control valve group, described overturning drive device comprises hydraulic motor, the control valve group of hydraulic power unit is connected with hydraulic motor by fluid pressure line, the output shaft of hydraulic motor is connected with trip shaft by bindiny mechanism, and the industrial control computer of described electric control gear is electrically connected with hydraulic power unit and control valve group.
Scheme as a further improvement on the present invention, the pushing handle telescopic control mechanism of described hold down gag is hydraulic cylinder, hydraulic cylinder is connected with the control valve group of hydraulic power unit by fluid pressure line.
Scheme as a further improvement on the present invention, this sprinkler with reel underframe automatic butt welding frock also comprises pressure gas source, pressure gas source comprises control valve group, the pushing handle telescopic control mechanism of described hold down gag is cylinder, cylinder is connected with the control valve group of pressure gas source by gas circuit pipeline, and the industrial control computer of described electric control gear is electrically connected with the control valve group of pressure gas source.
Scheme as a further improvement on the present invention, the welding gun on described electroplating equipment wielding machine arm is provided with range sensor, and described range sensor is electrically connected with the industrial control computer of described electric control gear.
Compared with prior art, this sprinkler with reel underframe automatic butt welding frock is to put a datum level using the upper surface of the slab construction workpiece supporting plate of level as spelling, utilize positioner and hold down gag by each position components of underframe workpiece and be pressed on the accurate location location that can ensure to spell each parts before point on the upper surface of workpiece supporting plate, when spelling point or welding, can make workpiece support section part overturn 180 ° along the axis that drives trip shaft by controlling overturning drive device, realize turning over of workpiece support parts, and then realization reduces operating personnel's labour intensity, prevent the distortion of colliding with of underframe workpiece, because the position of corresponding underframe baseplane weld seam on workpiece supporting plate is also provided with the trench structure of hollow out, therefore can the position of need welding be spelled a little or be welded from the hollow out trench structure at the workpiece supporting plate back side, do not need after dismounting, underframe workpiece to be turn over, the efficiency of spelling point and welding is higher, owing to being provided with electroplating equipment wielding machine arm and electric control gear, therefore can realize automatic spelling point and welding by industrial control computer according to the action of setting program control electroplating equipment wielding machine arm, not only can reduce impact, the production efficiency of human factor on reel underframe manufacturing schedule high, and can ensure the welding quality of reel underframe, be specially adapted to spelling point and the welding sequence of sprinkler with reel reel underframe.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
In figure: 1, support underframe, 2, trip shaft, 21, overturning drive device, 3, workpiece support parts, 31, workpiece supporting plate, 32, hold down gag, 33, positioner, 4, electroplating equipment wielding machine arm, 5, electric control gear.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, this sprinkler with reel underframe automatic butt welding frock comprises support underframe 1, trip shaft 2, workpiece support parts 3, electroplating equipment wielding machine arm 4 and electric control gear 5.
It is two that described support underframe 1 is symmetrical arranged, be fixedly installed in ground.
Described trip shaft 2 is set to two, two trip shafts 2 arrange with one heart, one end of two trip shafts 2 is arranged on the upper inner face of support underframe 1 by bearing block, at least one trip shaft 2 is provided with and is arranged on support underframe 1 or ground overturning drive device 21, and overturning drive device 21 can drive trip shaft 2 along rotating within the scope of at least 180 °, its axis.
The two ends of described workpiece support parts 3 are fixedly connected with the other end of trip shaft 2 respectively, comprise the workpiece supporting plate 31 of slab construction, on the upper surface of workpiece supporting plate 31, be provided with multiple hold down gag 32 and positioner 33, hold down gag 32 comprises the supporting seat being fixedly mounted on workpiece supporting plate 31, be arranged on the pushing handle telescopic control mechanism on supporting seat and be arranged on the pressure head on pushing handle telescopic control mechanism telescopic end, positioner 33 comprises for each main frame beam being carried out to the main frame beam detent mechanism of location, position and for support and connection beam being carried out to the support and connection beam detent mechanism of location, position, on workpiece supporting plate 31, on corresponding underframe bottom surface, the position of weld seam is also provided with the trench structure of hollow out.
Described electroplating equipment wielding machine arm 4 fixedly mount on the ground or support underframe 1 on, comprise coordinate control mechanism and be arranged on the welding gun of end, coordinate control mechanism can control electroplating equipment wielding machine arm 4 and move the welding gun that makes to be arranged on electroplating equipment wielding machine arm 4 and spell a little and weld near underframe workpiece.
Described electric control gear 5 comprises industrial control computer, electric power loop, spelling point control loop, upset control loop and welding control loop, and industrial control computer is electrically connected with overturning drive device 21 and electroplating equipment wielding machine arm 4 respectively.
This sprinkler with reel underframe automatic butt welding frock before use, above the upper surface of the workpiece supporting plate 31 of slab construction is positioned at, in horizontal original state, the original state of hold down gag 32 in being totally released, electroplating equipment wielding machine arm 4 is positioned at the initial position away from working region.
In use, using the upper surface of the workpiece supporting plate 31 of level as datum level, first the main frame beam of underframe be placed on the upper surface of workpiece supporting plate 31 and carry out location, position by main frame beam detent mechanism, support and connection beam is placed on successively to the position between main frame beam and carries out location, position and compression by support and connection beam detent mechanism and hold down gag 32, complete the entirety location of underframe workpiece and compress, open the power supply of electric control gear 5, after starting working in spelling point control loop, industrial control computer control electroplating equipment wielding machine arm 4 makes to be arranged on welding gun on electroplating equipment wielding machine arm 4 and moves to the dead-center position of the underframe workpiece of program setting according to setting program action, then industrial control computer control electroplating equipment wielding machine arm 4 knee-actions carry out striking and spell a little, then next position, operating point that industrial control computer control electroplating equipment wielding machine arm 4 moves to the underframe workpiece of program setting is continued striking and spells a little, the like, after completing striking and spell point to last position, operating point of the underframe workpiece of program setting, complete the spelling point work of plane on underframe, electroplating equipment wielding machine arm 4 moves to initial position,
Upset control loop is started working, 21 actions of industrial control computer control overturning drive device make workpiece support parts 3 overturn 180 ° along the axis that drives trip shaft 2, the baseplane of workpiece supporting plate 31 is positioned at top, described in the same, industrial control computer control electroplating equipment wielding machine arm 4 has moved the spelling point work of underframe baseplane;
Welding control loop is started working, industrial control computer moves underframe workpiece is welded according to the seam track control electroplating equipment wielding machine arm 4 of program setting, in welding process industrial control computer according to program setting overturn in good time workpiece support parts 3 to the angle of program setting fillet in parallel shear is welded and to be prevented welding deformation, during to the seam track end of the underframe workpiece of program setting, complete the integral solder work of underframe medial surface and lateral surface, electroplating equipment wielding machine arm 4 moves to initial position, after unclamping hold down gag 32, underframe assembly entirety can be hung out.
Because electronic control is easy to realize, therefore as one embodiment of the present invention, described overturning drive device 21 comprises motor and gearbox, the output shaft of motor is fixedly connected with the power shaft of gearbox, the output shaft of gearbox is connected with trip shaft 2 by bindiny mechanism, the industrial control computer of described electric control gear 5 is connected with the electric electromechanics of overturning drive device 21, can realize the upset of workpiece support parts 3 by the rotating of industrial control computer control motor.
Because hydraulic control has higher stable power output, be beneficial to the heavier workpiece support parts 3 of integrated overturn, and can prevent the overload of motor, therefore as another embodiment of the invention, this sprinkler with reel underframe automatic butt welding frock also comprises hydraulic power unit, hydraulic power unit comprises control valve group, described overturning drive device 21 comprises hydraulic motor, the control valve group of hydraulic power unit is connected with hydraulic motor by fluid pressure line, the output shaft of hydraulic motor is connected with trip shaft 2 by bindiny mechanism, the industrial control computer of described electric control gear 5 is electrically connected with hydraulic power unit and control valve group, by industrial control computer control hydraulic power unit and the work of control valve group and then realize fluid motor-driven workpiece support parts 3 and overturn.
In order to alleviate operating personnel's labour intensity in spelling point operation process, scheme as a further improvement on the present invention, the pushing handle telescopic control mechanism of described hold down gag 32 is hydraulic cylinders, hydraulic cylinder is connected with the control valve group of hydraulic power unit by fluid pressure line, realizes and compresses underframe workpiece, alleviates operating personnel's labour intensity by industrial control computer control hydraulic power unit and the work of control valve group.
Because air pressure control has swift feature, and compress underframe workpiece and conventionally do not need too large strength, therefore scheme as a further improvement on the present invention, this sprinkler with reel underframe automatic butt welding frock also comprises pressure gas source, pressure gas source comprises control valve group, the pushing handle telescopic control mechanism of described hold down gag 32 is cylinders, cylinder is connected with the control valve group of pressure gas source by gas circuit pipeline, the industrial control computer of described electric control gear 5 is electrically connected with the control valve group of pressure gas source, realize and compress underframe workpiece by industrial control computer controlled pressure source of the gas and the work of control valve group, alleviate operating personnel's labour intensity.
In order to realize command range more accurately, underframe workpiece is carried out to striking spelling point and welding, scheme as a further improvement on the present invention, welding gun on described electroplating equipment wielding machine arm 4 is provided with range sensor, described range sensor is electrically connected with the industrial control computer of described electric control gear 5, in the process that electroplating equipment wielding machine arm 4 moves, industrial control computer can accurately control by the feedback information of range sensor the distance that welding gun moves up and down, and then realizes more accurately underframe workpiece is carried out to striking spelling point and welding.
This sprinkler with reel underframe automatic butt welding frock is to put a datum level using the upper surface of the slab construction workpiece supporting plate 31 of level as spelling, utilize positioner 33 and hold down gag 32 by each position components of underframe workpiece and be pressed on the accurate location location that can ensure to spell each parts before point on the upper surface of workpiece supporting plate 31, spelling point or when welding can make workpiece support section part 3 along 180 ° of axis upsets that drive trip shafts 2 by controlling overturning drive device 21, realize turning over of workpiece support parts 3, and then realization reduces operating personnel's labour intensity, prevent the distortion of colliding with of underframe workpiece, because the position of corresponding underframe baseplane weld seam on workpiece supporting plate 31 is also provided with the trench structure of hollow out, therefore can the position of need welding be spelled a little or be welded from the hollow out trench structure at workpiece supporting plate 31 back sides, do not need after dismounting, underframe workpiece to be turn over, the efficiency of spelling point and welding is higher, owing to being provided with electroplating equipment wielding machine arm 4 and electric control gear 5, therefore can realize automatic spelling point and welding by industrial control computer according to the action of setting program control electroplating equipment wielding machine arm 4, not only can reduce impact, the production efficiency of human factor on reel underframe manufacturing schedule high, and can ensure the welding quality of reel underframe, be specially adapted to spelling point and the welding sequence of sprinkler with reel reel underframe.
Claims (6)
1. a sprinkler with reel underframe automatic butt welding frock, is characterized in that, comprises support underframe (1), trip shaft (2), workpiece support parts (3), electroplating equipment wielding machine arm (4) and electric control gear (5);
It is two that described support underframe (1) is symmetrical arranged, be fixedly installed in ground;
Described trip shaft (2) is set to two, two trip shafts (2) arrange with one heart, one end of two trip shafts (2) is arranged on the upper inner face of support underframe (1) by bearing block, at least one trip shaft (2) is provided with and is arranged on support underframe (1) or ground overturning drive device (21);
The two ends of described workpiece support parts (3) are fixedly connected with the other end of trip shaft (2) respectively, comprise the workpiece supporting plate (31) of slab construction, on the upper surface of workpiece supporting plate (31), be provided with multiple hold down gag (32) and positioner (33), hold down gag (32) comprises the supporting seat being fixedly mounted on workpiece supporting plate (31), be arranged on the pushing handle telescopic control mechanism on supporting seat and be arranged on the pressure head on pushing handle telescopic control mechanism telescopic end, positioner (33) comprises main frame beam detent mechanism and support and connection beam detent mechanism, on the upper corresponding underframe of workpiece supporting plate (31) bottom surface, the position of weld seam is also provided with the trench structure of hollow out,
Described electroplating equipment wielding machine arm (4) fixedly mounts on the ground or support underframe (1) is gone up, and comprises coordinate control mechanism and the welding gun that is arranged on end;
Described electric control gear (5) comprises industrial control computer, electric power loop, spelling point control loop, upset control loop and welding control loop, and industrial control computer is electrically connected with overturning drive device (21) and electroplating equipment wielding machine arm (4) respectively.
2. sprinkler with reel underframe automatic butt welding frock according to claim 1, it is characterized in that, described overturning drive device (21) comprises motor and gearbox, the output shaft of motor is fixedly connected with the power shaft of gearbox, the output shaft of gearbox is connected with trip shaft (2) by bindiny mechanism, and the industrial control computer of described electric control gear (5) is connected with the electric electromechanics of overturning drive device (21).
3. sprinkler with reel underframe automatic butt welding frock according to claim 1, it is characterized in that, this sprinkler with reel underframe automatic butt welding frock also comprises hydraulic power unit, hydraulic power unit comprises control valve group, described overturning drive device (21) comprises hydraulic motor, the control valve group of hydraulic power unit is connected with hydraulic motor by fluid pressure line, the output shaft of hydraulic motor is connected with trip shaft (2) by bindiny mechanism, and the industrial control computer of described electric control gear (5) is electrically connected with hydraulic power unit and control valve group.
4. sprinkler with reel underframe automatic butt welding frock according to claim 3, is characterized in that, the pushing handle telescopic control mechanism of described hold down gag (32) is hydraulic cylinder, and hydraulic cylinder is connected with the control valve group of hydraulic power unit by fluid pressure line.
5. according to the sprinkler with reel underframe automatic butt welding frock described in claim 1 or 2 or 3, it is characterized in that, this sprinkler with reel underframe automatic butt welding frock also comprises pressure gas source, pressure gas source comprises control valve group, the pushing handle telescopic control mechanism of described hold down gag (32) is cylinder, cylinder is connected with the control valve group of pressure gas source by gas circuit pipeline, and the described industrial control computer of electric control gear (5) and the control valve group of pressure gas source are electrically connected.
6. according to the sprinkler with reel underframe automatic butt welding frock described in claim 1 or 2 or 3, it is characterized in that, welding gun on described electroplating equipment wielding machine arm (4) is provided with range sensor, and described range sensor is electrically connected with the industrial control computer of described electric control gear (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092699.8A CN105598627A (en) | 2016-02-19 | 2016-02-19 | Automatic tailor-welding tool for reel sprinkler underbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092699.8A CN105598627A (en) | 2016-02-19 | 2016-02-19 | Automatic tailor-welding tool for reel sprinkler underbed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105598627A true CN105598627A (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610092699.8A Pending CN105598627A (en) | 2016-02-19 | 2016-02-19 | Automatic tailor-welding tool for reel sprinkler underbed |
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| CN (1) | CN105598627A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111634000A (en) * | 2020-05-29 | 2020-09-08 | 江苏华源节水股份有限公司 | Reel end PE pipe box-packed installation unit |
| CN114193063A (en) * | 2021-12-28 | 2022-03-18 | 江苏炳凯富汽车零部件制造有限公司 | Car air conditioner condenser assembly weldment work platform of multi-angle upset |
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| CN205571819U (en) * | 2016-02-19 | 2016-09-14 | 江苏华源节水股份有限公司 | Automatic frock of welding of reel sprinkling machine chassis |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111634000A (en) * | 2020-05-29 | 2020-09-08 | 江苏华源节水股份有限公司 | Reel end PE pipe box-packed installation unit |
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Application publication date: 20160525 |
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