CN108526802B - Elbow fitting welding clamping device for water conservancy construction - Google Patents
Elbow fitting welding clamping device for water conservancy construction Download PDFInfo
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- CN108526802B CN108526802B CN201810680825.0A CN201810680825A CN108526802B CN 108526802 B CN108526802 B CN 108526802B CN 201810680825 A CN201810680825 A CN 201810680825A CN 108526802 B CN108526802 B CN 108526802B
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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
- 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
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Abstract
The invention belongs to the field of water conservancy construction, and particularly relates to a elbow joint welding and clamping device for water conservancy construction. The invention aims to solve the technical problem of providing a elbow joint welding and clamping device for water conservancy construction, which is simple and convenient to operate and is convenient for welding gun operation and welding wire feeding during welding. A bent pipe joint welding and clamping device for water conservancy construction comprises a first clamping plate, a first fixing plate, a second fixing plate, a first bolt, a second clamping plate, a circular pipe, a first nut, a third clamping plate, a second nut, a screw rod and the like; the other end is fixedly connected with the first fixing plate; one end of the second clamping plate is hinged with the first circular plate, and the other end of the second clamping plate is fixedly connected with the second fixing plate; the first fixing plate is provided with a first through hole, the second fixing plate is provided with a second through hole, and the first nut is fixedly connected to the bottom of the first fixing plate. The invention can conveniently clamp the bent pipe and align the welding points at the two ends, thereby achieving the effect of accelerating the welding speed.
Description
Technical Field
The invention belongs to the field of water conservancy construction, and particularly relates to a elbow joint welding and clamping device for water conservancy construction.
Background
At present, in the hydraulic engineering construction, the laying of the drainage pipe is needed, in the construction process, the pipeline is often bent due to the terrain, the obstacle is avoided, when the pipeline is bent, the pipeline is bent to a designed angle in advance, then the pipeline is welded on site, when the pipeline is welded, because the bent part is peculiar in shape, a right-angle bent pipe, an S shape and the like exist, the outer wall of the bent pipeline is not in a straight line, the butt joint is difficult, people need to be stabilized, and because the general production of the bent part and the like are that two ends are connected, one end is slightly deviated, the welding of the other end cannot be aligned, the laying of the pipeline is influenced, the two ends are required to be simultaneously butted and clamped, but most of the existing butt joints are butted through a manually matched hoisting device and are butted one-to-one, the low efficiency, some butt joint fixing device mechanisms are complicated, and the operation of welder and the giving of welding wire when being not convenient for weld need urgently to develop an elbow joint welding clamping device for water conservancy construction of doing of welder and the giving of welding wire when consequently easy and simple to handle and be convenient for weld.
Disclosure of Invention
The invention aims to overcome the defects that the existing butt joint fixing device is complex in mechanism and inconvenient to operate a welding gun and feed welding wires during welding, and the technical problem to be solved by the invention is to provide the elbow joint welding and clamping device for water conservancy construction, which is simple and convenient to operate and feed the welding gun and the welding wires during welding.
The invention is achieved by the following specific technical means:
a bent pipe joint welding clamping device for water conservancy construction comprises a first clamping plate, a first fixing plate, a second fixing plate, a first bolt, a second clamping plate, a circular pipe, a first nut, a third clamping plate, a second nut, a screw, a second bolt, a fourth clamping plate, a first connecting rod, a third bolt, a second connecting plate, a third connecting plate, a fourth bolt, a second connecting rod, a fourth connecting plate, a third fixing plate, a fourth fixing plate, a first circular plate and a second circular plate; one end of the first clamping plate is hinged with the first circular plate, and the other end of the first clamping plate is fixedly connected with the first fixing plate; one end of the second clamping plate is hinged with the first circular plate, and the other end of the second clamping plate is fixedly connected with the second fixing plate; the first fixing plate is provided with a first through hole, the second fixing plate is provided with a second through hole, a first nut is fixedly connected to the bottom of the first fixing plate, a first bolt penetrates through the first through hole and the second through hole to be in threaded connection with the first nut, the circular pipe is fixedly connected to the side part of the first circular plate, and the inner wall of the circular pipe is provided with internal threads; one end of the third clamping plate is hinged with the second circular plate, and the other end of the third clamping plate is fixedly connected with the fourth fixing plate; one end of the fourth clamping plate is hinged with the second circular plate, and the other end of the fourth clamping plate is fixedly connected with the third fixing plate; the third fixing plate is provided with a third through hole, the fourth fixing plate is provided with a fourth through hole, the second nut is fixedly connected to the bottom of the fourth fixing plate, and the second bolt penetrates through the third through hole and the fourth through hole and is in threaded connection with the second nut; one end of the screw rod is hinged with the second circular plate, and the other end of the screw rod is in threaded connection with the internal thread in the circular pipe;
a first connecting plate is arranged in the middle of the fourth clamping plate, the first connecting rod is hinged with the first connecting plate, the two second connecting plates are hinged with each other, a second groove for the first connecting rod to insert into is formed in each second connecting plate, and a second threaded hole is formed in the top of the second groove; the third bolt is in threaded connection with the second threaded hole and is in contact connection with the first connecting rod; a fourth connecting plate is arranged in the middle of the third clamping plate, the second connecting rod is hinged with the fourth connecting plate, the two third connecting plates are hinged with each other, a first groove for the second connecting rod to insert is formed in each third connecting plate, and a first threaded hole is formed in the bottom in each first groove; the fourth bolt is in threaded connection with the first threaded hole and is in contact connection with the second connecting rod;
the device also comprises a third connecting rod, a first rotating button, a first screw rod, a first arc-shaped plate, a second screw rod, a second rotating button and a fourth connecting rod; the third connecting rod is hinged with the side part, far away from the first connecting plate, of the fourth clamping plate, the third connecting rod is provided with a third threaded hole, the first screw rod is in threaded connection with the third threaded hole, the first rotating button is fixedly connected to the top of the first screw rod, the first arc-shaped plate is fixedly connected to the bottom of the first screw rod, the fourth connecting rod is hinged with the side part, far away from the fourth connecting plate, of the third clamping plate, the fourth connecting rod is provided with a fourth threaded hole, the second screw rod is in threaded connection with the fourth threaded hole, the second rotating button is fixedly connected to the bottom of the second screw rod, and the second arc-shaped;
the device also comprises a first stop lever and a second stop lever; the first stop lever is fixedly connected to the side part of the fourth clamping plate and is positioned below the third connecting rod; the second stop lever is fixedly connected to the side part of the third clamping plate and is positioned above the fourth connecting rod;
the anti-skid rubber also comprises first anti-skid rubber, second anti-skid rubber, third anti-skid rubber and fourth anti-skid rubber; the first anti-slip rubber is fixedly connected to the inner wall of the second clamping plate, the second anti-slip rubber is fixedly connected to the inner wall of the first clamping plate, the third anti-slip rubber is fixedly connected to the inner wall of the fourth clamping plate, and the fourth anti-slip rubber is fixedly connected to the inner wall of the third clamping plate.
Furthermore, the first rotating button and the second rotating button are provided with grains.
Compared with the prior art, the invention has the following beneficial effects:
the pipe can be conveniently clamped through the mutual matching of the first clamping plate, the second clamping plate, the third clamping plate and the fourth clamping plate; the position of the fixed elbow can be conveniently adjusted under the mutual matching of the third bolt, the second connecting plate, the first connecting rod, the fourth bolt, the third connecting plate and the second connecting rod, so that the elbow can be better fixed; the welding end can be conveniently aligned under the mutual matching of the screw and the circular tube; the invention can conveniently clamp the bent pipe and align the welding points at the two ends, thereby achieving the effect of accelerating the welding speed.
Drawings
Fig. 1 is a first front view structure diagram of the present invention.
Fig. 2 is a first right-view structural diagram of the present invention.
FIG. 3 is a first right sectional structural view of the present invention.
Fig. 4 is a second front view structure diagram of the present invention.
Fig. 5 is a third schematic view of the present invention.
Fig. 6 is a second right-view structural diagram of the present invention.
FIG. 7 is a second right sectional structural view of the present invention.
The labels in the figures are: 1-a first clamping plate, 2-a first through hole, 3-a first fixing plate, 4-a second fixing plate, 5-a second through hole, 6-a first bolt, 7-a second clamping plate, 8-a round tube, 9-a first nut, 10-a third clamping plate, 11-a second nut, 12-a screw, 13-an internal thread, 14-a second bolt, 15-a fourth clamping plate, 16-a first connecting plate, 17-a first connecting rod, 18-a third bolt, 19-a second connecting plate, 20-a third connecting plate, 21-a fourth bolt, 22-a second connecting rod, 23-a fourth connecting plate, 24-a first threaded hole, 25-a first groove, 26-a second groove, 27-a second threaded hole, 28-a third through hole, 29-third fixing plate, 30-fourth fixing plate, 31-fourth through hole, 32-first circular plate, 33-second circular plate, 34-third connecting rod, 35-first knob, 36-first screw rod, 37-third threaded hole, 38-first arc-shaped plate, 39-second arc-shaped plate, 40-fourth threaded hole, 41-second screw rod, 42-second knob, 43-fourth connecting rod, 44-first stop lever, 45-second stop lever, 46-first anti-slip rubber, 47-second anti-slip rubber, 48-third anti-slip rubber and 49-fourth anti-slip rubber.
Detailed Description
The invention is further described below with reference to the figures and examples.
Examples
A bent pipe joint welding and clamping device for water conservancy construction is shown in figures 1-7 and comprises a first clamping plate 1, a first fixing plate 3, a second fixing plate 4, a first bolt 6, a second clamping plate 7, a circular pipe 8, a first nut 9, a second nut 3, a first clamping plate 3, a second clamping plate 4, a second clamping plate 7, a circular pipe 8, a first clamping plate, a second clamping plate, a,
A third clamping plate 10, a second nut 11, a screw 12, a second bolt 14, a fourth clamping plate 15, a first connecting plate 16, a first connecting rod 17, a third bolt 18, a second connecting plate 19, a third connecting plate 20, a fourth bolt 21, a second connecting rod 22, a fourth connecting plate 23, a third fixing plate 29, a fourth fixing plate 30, a first circular plate 32 and a second circular plate 33; one end of the first clamping plate 1 is hinged with the first circular plate 32, and the other end is fixedly connected with the first fixing plate 3; one end of the second clamping plate 7 is hinged with the first round plate 32, and the other end is fixedly connected with the second fixing plate 4; the first fixing plate 3 is provided with a first through hole 2, the second fixing plate 4 is provided with a second through hole 5, a first nut 9 is fixedly connected to the bottom of the first fixing plate 3, a first bolt 6 penetrates through the first through hole 2 and the second through hole 5 to be in threaded connection with the first nut 9, a circular tube 8 is fixedly connected to the side part of the first circular plate 32, and the inner wall of the circular tube 8 is provided with an internal thread 13; one end of the third clamping plate 10 is hinged with the second circular plate 33, and the other end is fixedly connected with the fourth fixing plate 30; one end of the fourth clamping plate 15 is hinged with the second circular plate 33, and the other end is fixedly connected with the third fixing plate 29; the third fixing plate 29 is provided with a third through hole 28, the fourth fixing plate 30 is provided with a fourth through hole 31, the second nut 11 is fixedly connected to the bottom of the fourth fixing plate 30, and the second bolt 14 penetrates through the third through hole 28 and the fourth through hole 31 to be in threaded connection with the second nut 11; one end of the screw 12 is hinged with the second circular plate 33, and the other end is in threaded connection with the internal thread 13 in the circular tube 8;
a first connecting plate 16 is arranged in the middle of the fourth clamping plate 15, the first connecting rod 17 is hinged with the first connecting plate 16, the two second connecting plates 19 are hinged with each other, a second groove 26 for inserting the first connecting rod 17 is formed in each second connecting plate 19, and a second threaded hole 27 is formed in the top of the second groove 26; the third bolt 18 is screwed with the second threaded hole 27 and is in contact connection with the first connecting rod 17; a fourth connecting plate 23 is arranged in the middle of the third clamping plate 10, the second connecting rod 22 is hinged with the fourth connecting plate 23, the two third connecting plates 20 are hinged with each other, the third connecting plate 20 is provided with a first groove 25 for the second connecting rod 22 to be inserted into, and the bottom in the first groove 25 is provided with a first threaded hole 24; the fourth bolt 21 is screwed with the first threaded hole 24 and is in contact connection with the second connecting rod 22.
Firstly, screwing out a first bolt 6, then, unscrewing a first clamping plate 1 and a second clamping plate 7, placing the end part of a straight pipe to be welded on the second clamping plate 7, covering the first clamping plate 1 and screwing in the first bolt 6, fixing the straight pipe in such a way, fixing another straight pipe to be welded on the other end of the device by the above method, then, screwing out a second bolt 14, unscrewing a third clamping plate 10 and a fourth clamping plate 15, placing a bent pipe to be welded on two third clamping plates 10, unscrewing a third bolt 18 and a fourth bolt 21, adjusting the clamped part according to the shape and length of the bent pipe, after the adjustment is completed, screwing down the third bolt 18 and the fourth bolt 21, covering the fourth clamping plate 15, then, screwing in the second bolt 14, thus, fixing the bent pipe, then, rotating a screw 12, rotating the screw 12 to drive a circular pipe 8 to move, further driving the straight pipe to move, thus, conveniently aligning the welded end, the welding of the workers is convenient, the two ends of the bent pipe are aligned to the welding ends, and the bent pipe can be prevented from being welded askew.
As shown in fig. 4, the elbow joint welding and clamping device for construction further includes a third connecting rod 34, a first rotating button 35, a first lead screw 36, a first arc-shaped plate 38, a second arc-shaped plate 39, a second lead screw 41, a second rotating button 42 and a fourth connecting rod 43; the third connecting rod 34 is hinged to the side portion of the fourth clamping plate 15 far away from the first connecting plate 16, the third connecting rod 34 is provided with a third threaded hole 37, the first screw rod 36 is in threaded connection with the third threaded hole 37, the first rotating button 35 is fixedly connected to the top of the first screw rod 36, the first arc-shaped plate 38 is fixedly connected to the bottom of the first screw rod 36, the fourth connecting rod 43 is hinged to the side portion of the third clamping plate 10 far away from the fourth connecting plate 23, the fourth connecting rod 43 is provided with a fourth threaded hole 40, the second screw rod 41 is in threaded connection with the fourth threaded hole 40, the second rotating button 42 is fixedly connected to the bottom of the second screw rod 41, and the second arc-shaped plate 39 is fixedly connected to the.
When the welding end needs to be aligned, the first rotating button 35 and the second rotating button 42 are screwed, the first arc-shaped plate 38 and the second arc-shaped plate 39 are driven to be drawn close to each other, the first arc-shaped plate 38 and the second arc-shaped plate 39 are drawn close to each other and then clamp the welding end, after the welding end is aligned, the first rotating button 35 and the second rotating button 42 are reversely screwed to be loosened, and therefore the welding end can be rapidly aligned conveniently.
As shown in fig. 5, the elbow joint welding and clamping device for construction further includes a first stopper 44 and a second stopper 45; the first stop lever 44 is fixedly connected to the side of the fourth clamping plate 15 and is located below the third connecting rod 34; the second blocking rod 45 is fixedly connected to the side of the third clamping plate 10 and is located above the fourth connecting rod 43.
The first and second stop levers 44 and 45 can prevent the third and fourth connecting rods 34 and 43 from swinging up and down around the hinge point, so that the welding ends cannot be aligned.
As shown in fig. 6 and 7, the elbow joint welding and clamping device for construction further includes a first anti-slip rubber 46, a second anti-slip rubber 47, a third anti-slip rubber 48, and a fourth anti-slip rubber 49; the first anti-slip rubber 46 is fixedly connected to the inner wall of the second splint 7, the second anti-slip rubber 47 is fixedly connected to the inner wall of the first splint 1, the third anti-slip rubber 48 is fixedly connected to the inner wall of the fourth splint 15, and the fourth anti-slip rubber 49 is fixedly connected to the inner wall of the third splint 10.
The first anti-slip rubber 46, the second anti-slip rubber 47, the third anti-slip rubber 48 and the fourth anti-slip rubber 49 can increase the friction force with the pipe, and further the pipe can be fixed more firmly.
Wherein, the first knob 35 and the second knob 42 are provided with lines; the texturing can increase friction with the fingers to better control the rotation of the first and second knobs 35, 42.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (2)
1. A bent pipe joint welding clamping device for water conservancy construction is characterized by comprising a first clamping plate (1), a first fixing plate (3), a second fixing plate (4), a first bolt (6), a second clamping plate (7), a round pipe (8), a first nut (9), a third clamping plate (10), a second nut (11), a screw (12), a second bolt (14), a fourth clamping plate (15), a first connecting plate (16), a first connecting rod (17), a third bolt (18), a second connecting plate (19), a third connecting plate (20), a fourth bolt (21), a second connecting rod (22), a fourth connecting plate (23), a third fixing plate (29), a fourth fixing plate (30), a first circular plate (32) and a second circular plate (33); one end of the first clamping plate (1) is hinged with the first circular plate (32), and the other end is fixedly connected with the first fixing plate (3); one end of the second clamping plate (7) is hinged with the first circular plate (32), and the other end is fixedly connected with the second fixing plate (4); a first through hole (2) is formed in the first fixing plate (3), a second through hole (5) is formed in the second fixing plate (4), a first nut (9) is fixedly connected to the bottom of the first fixing plate (3), a first bolt (6) penetrates through the first through hole (2) and the second through hole (5) to be in threaded connection with the first nut (9), a circular pipe (8) is fixedly connected to the side portion of the first circular plate (32), and internal threads (13) are formed in the inner wall of the circular pipe (8); one end of the third clamping plate (10) is hinged with the second circular plate (33), and the other end is fixedly connected with the fourth fixing plate (30); one end of the fourth clamping plate (15) is hinged with the second circular plate (33), and the other end is fixedly connected with the third fixing plate (29); a third through hole (28) is formed in the third fixing plate (29), a fourth through hole (31) is formed in the fourth fixing plate (30), a second nut (11) is fixedly connected to the bottom of the fourth fixing plate (30), and a second bolt (14) penetrates through the third through hole (28) and the fourth through hole (31) to be in threaded connection with the second nut (11); one end of the screw rod (12) is hinged with the second circular plate (33), and the other end of the screw rod is in threaded connection with the internal thread (13) in the circular tube (8);
a first connecting plate (16) is arranged in the middle of the fourth clamping plate (15), a first connecting rod (17) is hinged with the first connecting plate (16), two second connecting plates (19) are hinged with each other, a second groove (26) for the first connecting rod (17) to insert into is formed in each second connecting plate (19), and a second threaded hole (27) is formed in the top of the inner portion of each second groove (26); the third bolt (18) is in threaded connection with the second threaded hole (27) and is in contact connection with the first connecting rod (17); a fourth connecting plate (23) is arranged in the middle of the third clamping plate (10), the second connecting rod (22) is hinged with the fourth connecting plate (23), the two third connecting plates (20) are hinged with each other, a first groove (25) for the second connecting rod (22) to insert is formed in each third connecting plate (20), and a first threaded hole (24) is formed in the bottom of each first groove (25); the fourth bolt (21) is in threaded connection with the first threaded hole (24) and is in contact connection with the second connecting rod (22);
the device also comprises a third connecting rod (34), a first rotating button (35), a first screw rod (36), a first arc-shaped plate (38), a second arc-shaped plate (39), a second screw rod (41), a second rotating button (42) and a fourth connecting rod (43); the third connecting rod (34) is hinged with the side part, far away from the first connecting plate (16), of the fourth clamping plate (15), a third threaded hole (37) is formed in the third connecting rod (34), the first screw rod (36) is in threaded connection with the third threaded hole (37), the first rotating button (35) is fixedly connected to the top of the first screw rod (36), the first arc-shaped plate (38) is fixedly connected to the bottom of the first screw rod (36), the fourth connecting rod (43) is hinged with the side part, far away from the fourth connecting plate (23), of the third clamping plate (10), the fourth connecting rod (43) is provided with a fourth threaded hole (40), the second screw rod (41) is in threaded connection with the fourth threaded hole (40), the second rotating button (42) is fixedly connected to the bottom of the second screw rod (41), and the second arc-shaped plate (39) is fixedly connected to the top of the second screw rod (;
the device also comprises a first stop lever (44) and a second stop lever (45); the first stop lever (44) is fixedly connected to the side part of the fourth splint (15) and is positioned below the third connecting rod (34); the second stop lever (45) is fixedly connected to the side part of the third splint (10) and is positioned above the fourth connecting rod (43);
the anti-skid rubber also comprises first anti-skid rubber (46), second anti-skid rubber (47), third anti-skid rubber (48) and fourth anti-skid rubber (49); the first anti-skid rubber (46) is fixedly connected with the inner wall of the second splint (7), the second anti-skid rubber (47) is fixedly connected with the inner wall of the first splint (1), the third anti-skid rubber (48) is fixedly connected with the inner wall of the fourth splint (15), and the fourth anti-skid rubber (49) is fixedly connected with the inner wall of the third splint (10).
2. The elbow joint welding and clamping device for water conservancy construction according to claim 1, wherein the first rotating button (35) and the second rotating button (42) are provided with lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810680825.0A CN108526802B (en) | 2018-06-27 | 2018-06-27 | Elbow fitting welding clamping device for water conservancy construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810680825.0A CN108526802B (en) | 2018-06-27 | 2018-06-27 | Elbow fitting welding clamping device for water conservancy construction |
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| Publication Number | Publication Date |
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| CN108526802A CN108526802A (en) | 2018-09-14 |
| CN108526802B true CN108526802B (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810680825.0A Active CN108526802B (en) | 2018-06-27 | 2018-06-27 | Elbow fitting welding clamping device for water conservancy construction |
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| CN109732267A (en) * | 2019-01-28 | 2019-05-10 | 江西理工大学 | A kind of heating and ventilating pipeline laying union elbow auxiliary welding equipment |
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| CN205342339U (en) * | 2016-03-03 | 2016-06-29 | 济南港华环通燃气工程有限公司 | Welding of indoor riser is to mouthpart |
| CN106794560A (en) * | 2014-10-08 | 2017-05-31 | 谢尔-阿克.奥尔森管理公司 | Method and apparatus for pipe fitting to neutralizing interim fixation |
| CN206837627U (en) * | 2017-06-30 | 2018-01-05 | 江西中烟工业有限责任公司 | Briquetting roller negative pressure system cleaning device replaceable cartridge formula outlet pipe |
| CN107877072A (en) * | 2017-12-06 | 2018-04-06 | 李广素 | A kind of water conservancy construction union elbow welds clamping device |
| CN207470962U (en) * | 2017-09-26 | 2018-06-08 | 天津惠蓬海洋工程有限公司 | A kind of high pressure line fast junction apparatus |
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2018
- 2018-06-27 CN CN201810680825.0A patent/CN108526802B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106794560A (en) * | 2014-10-08 | 2017-05-31 | 谢尔-阿克.奥尔森管理公司 | Method and apparatus for pipe fitting to neutralizing interim fixation |
| CN205342339U (en) * | 2016-03-03 | 2016-06-29 | 济南港华环通燃气工程有限公司 | Welding of indoor riser is to mouthpart |
| CN206837627U (en) * | 2017-06-30 | 2018-01-05 | 江西中烟工业有限责任公司 | Briquetting roller negative pressure system cleaning device replaceable cartridge formula outlet pipe |
| CN207470962U (en) * | 2017-09-26 | 2018-06-08 | 天津惠蓬海洋工程有限公司 | A kind of high pressure line fast junction apparatus |
| CN107877072A (en) * | 2017-12-06 | 2018-04-06 | 李广素 | A kind of water conservancy construction union elbow welds clamping device |
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