CN109175871A - A kind of accurate type wear-resistant chute automatic welding device - Google Patents
A kind of accurate type wear-resistant chute automatic welding device Download PDFInfo
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- CN109175871A CN109175871A CN201811327379.1A CN201811327379A CN109175871A CN 109175871 A CN109175871 A CN 109175871A CN 201811327379 A CN201811327379 A CN 201811327379A CN 109175871 A CN109175871 A CN 109175871A
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- resistant chute
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- 238000003466 welding Methods 0.000 title claims abstract description 54
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention proposes a kind of accurate type wear-resistant chute automatic welding devices, including preceding weldering positioning transporting device, preceding welder matched with preceding weldering positioning transporting device, automatic turning device, afterwards weldering positioning transporting device, rear welder matched with rear weldering positioning transporting device;The cylinder that weldering positioning transporting device includes bracket, the rollgang on bracket, the objective table on rollgang, the prelocalization plate being located on objective table and rear position plate, connect with prelocalization plate before described, the objective table go forward to be equipped with multiple pre-determined bit slide posts between positioning plate and rear position plate；Present device accurate positioning, cylinder, limited block complete the positioning of horizontal direction jointly, are pre-positioned adjustable height in slide post vertical direction, realize three-dimensional be accurately positioned；Overturning transmission process in be transversely to the conveying direction, the relative position of wear-resistant chute be almost it is constant, maintain accurate positioning during transportation.
Description
Technical field
The present invention relates to coal excavation apparatus, toolings to safeguard recovery technique field, particularly relate to a kind of accurate type wear-resistant chute from
Dynamicization welder.
Background technique
Wear-resistant chute is that the open type channel for carrying out ore-rock gravity haulage is dug using landform, and country estate Coal Mine Design uses
Wear-resistant chute shape as shown in Figure 1, is welded to plate conveyor two sides by the two blocks of wing plates in left and right and is made, chute design requires one weld seam
It is smaller, secondly even weld, thirdly wing plates on two sides is consistent with plate conveyor welds joint angle vertical, its more than four a chute shape
Stable homogeneous.Traditional wear-resistant chute is formed by worker's manual welding, not only inefficiency, and can not overcome shape, weld seam
It can not stable homogeneous defect, it would be highly desirable to which research and development adapt to promote wear-resistant chute product with the automatic welding equipment of wear-resistant chute production
Matter, improving production efficiency save factory cost;The first generation wear-resistant chute automatic welding device of applicant's research and development is in welding
An existing problem be in automatic turning device switching process wear-resistant chute due to shake can change position or generation and side
The collision of position baffle reduces production efficiency, needs to improve so overturning positioning is inaccurate.
Summary of the invention
The present invention proposes a kind of accurate type wear-resistant chute automatic welding device, realizes the automatic welding of wear-resistant chute
Production.
The technical scheme of the present invention is realized as follows:
A kind of accurate type wear-resistant chute automatic welding device, including preceding weldering positioning transporting device and preceding weldering positioning transporting device
Matched preceding welder, automatic turning device, afterwards weld positioning transporting device, with afterwards weld positioning transporting device it is matched after be welded
It sets;Weldering positioning transporting device includes bracket, the rollgang on bracket, the objective table on rollgang, is located at loading before described
Prelocalization plate and rear position plate on platform, the cylinder connecting with prelocalization plate, the objective table are gone forward positioning plate and rear position plate
Between be equipped with multiple pre-determined bit slide posts；Pre-determined bit slide post includes location nut, positioning screw and is embedded in positioning screw
Ball；Preceding welder includes track, the ball-screw for setting weldment in orbit, driving weldment, is slided in weldment by first
Block be equipped with the first welding gun, by the second sliding block be equipped with the second welding gun, the first welding gun, the second welding gun respectively with wire feeder and atmosphere
Protective device connection；The automatic turning device includes bearing support, the rollover stand being rotatablely connected with bearing support, is located on rollover stand
Overturning motor, lower conveyer belt is equipped with by lower stepper motor in rollover stand, upper conveyor belt is equipped with by upper stepper motor, under it is defeated
It send and takes equipped with lifting motor, when lifting motor adjusts lower conveyer belt far from upper conveyor belt, lower conveyer belt is concordant with rollgang.
Preferably, the rollover stand includes overturning column and rotation column, and lifting motor is by being located on overturning column
Transmission device is connect with lower conveyer belt, and overturning motor is connect by rotating column with rollover stand.
Preferably, the rear weldering positioning transporting device welds bracket, the rear rear weldering rollgang welded on bracket after including, when upper
When conveyer belt is located at immediately below lower conveyer belt, upper conveyor belt is concordant in rear weldering rollgang height.
Preferably, the bracket is connect by connection sheet with rollgang, and bracket is equipped with and is bolted connection piece
Rack groove is conveniently replaceable position adjusting.
Preferably, the rollgang crossbeam is equipped with the crossbeam groove for being bolted connection piece, is conveniently replaceable position
It adjusts.
Preferably, the objective table is equipped with limited block, and limited block connects with the limiting cylinder for being located at objective table bottom end
It connects, limited block is used as positioning datum.
Apparatus of the present invention use process is as follows, before welding, the wing plate of the left and right sides is welded in plate conveyor by artificial spot welding,
What is completed first before welding is positioning of the wear-resistant chute on objective table, and positioning datum is rear position plate；Along roller-way advance side
Upwards, limited block positions wear-resistant chute, is pre-positioned slide post at this time and withstands in plate conveyor, plate conveyor is applied under ball action
Add a small active force, wear-resistant chute can move, and realize that wear-resistant chute easily moves, and moreover, be pre-positioned slide post
High and low position is adjustable, rotational positioning screw rod, thus it is possible to vary positioning screw and location nut relative position, to be turned up or adjust
Low ball position, changes the height of wear-resistant chute, to sum up realizes the pre-determined bit in three directions, this makees for pre-determined bit slide post
With；The switch of cylinder is opened, cylinder pushes prelocalization plate to clamp wear-resistant chute, realizes that wear-resistant chute is accurately fixed in objective table
Position；According to the wear-resistant chute of different model, the first sliding block, the second sliding block relative position are adjusted, allows the first welding gun and the second welding gun
It is directed at weld seam, motor drives ball-screw, and weldment can be moved along track, can be in track for the wear-resistant chute of different model
Upper setting limit switch realizes multi-pass welding, completes the welding in a face；It is resistance under rollgang promotion after being soldered a face
It grinds chute to move ahead along rollgang, lifting motor adjusts lower conveyer belt far from upper conveyor belt, at this time lower conveyer belt and conveying roller
Road is concordant, and lower stepper motor, which is opened, drives lower conveyer belt rotation, and lower conveyer belt drives wear-resistant chute Forward, when wear-resistant chute is complete
When being moved in lower conveyer belt, lower conveyer belt is driven to rise for lifting motor until wear-resistant chute will be wear-resisting after contacting with upper conveyor belt
Chute has been clipped between lower conveyer belt, upper conveyor belt, and then overturn motor open, drive rollover stand rotate 180 °, at this time on
Conveyer belt is located at right above lower conveyer belt and upper conveyor belt is concordant in rear weldering rollgang height, lifts after the completion of 180 ° of overturnings
Motor is again started up, and drives lower conveyer belt far from upper conveyor belt, and and then upper stepper motor drives upper conveyor belt rotation, will be wear-resisting
Chute welds rollgang after being transferred to from upper conveyor belt, completes the overturning and conveying of wear-resistant chute, and in transmission process
Be transversely to the conveying direction, the relative position of wear-resistant chute be almost it is constant, maintain accurate positioning during transportation；Finally
The welding in one face, as an implementation, rear welder are identical as preceding welder functional parts configuration, are by rear first
The positioning that positioning transporting device completes three directions is welded, rear welder completes weld seam welding, and entire welding process terminates.
The invention has the benefit that (1) present device accurate positioning, cylinder, limited block complete level side jointly
To positioning, be pre-positioned adjustable height in slide post vertical direction, realize it is three-dimensional be accurately positioned, and adapt in different model
Wear-resistant chute；(2) two-sided welding realizes streamlined operation together with overturning, and work efficiency is high, perpendicular to defeated in transmission process
Send direction, the relative position of wear-resistant chute be almost it is constant, maintain accurate positioning during transportation;(3) people is reduced
The failure rate of work welding, avoids the defect that human weld part is unable to stable homogeneous.
Detailed description of the invention
The position Fig. 1 wear-resistant chute structural schematic diagram;
Fig. 2 is the first structure diagram of the accurate type wear-resistant chute automatic welding device of the present invention；
Fig. 3 is the second structural schematic diagram of the accurate type wear-resistant chute automatic welding device of the present invention；
Fig. 4 is preceding weldering positioning transporting device structural schematic diagram；
Fig. 5 is automatic turning device first structure diagram.
Fig. 6 is the second structural schematic diagram of automatic turning device
Wherein, 1, preceding weldering positioning transporting device, 2, preceding welder, 3, automatic turning device, 5, weld positioning transporting device afterwards, 6, after
Welder, 7, limited block, 10, cylinder, 11, bracket, 12, rollgang, 13, objective table, 14, prelocalization plate, 15, rear fixed
Position plate, 16, pre-determined bit slide post, 16a, location nut, 16b, positioning screw, 16c, ball, 17, connection sheet, 18, bracket it is recessed
Slot, 19, crossbeam groove, 21, track, 22, weldment, 23, ball-screw, the 24, first sliding block, the 25, first welding gun, 26, second is sliding
Block, the 27, second welding gun, 31, bearing support, 32, rollover stand, 33, overturning motor, 34, lower stepper motor, 32a, overturning column,
32b, rotation column, 35, lower conveyer belt, 36, upper stepper motor, 37, upper conveyor belt, 38, lifting motor, 51, weld bracket afterwards,
52, rollgang is welded afterwards.
Specific embodiment
In order to deepen the understanding of the present invention, automatic to the accurate type wear-resistant chute of the present invention below in conjunction with example and attached drawing
Change welder to be described in further detail, the embodiment is only for explaining the present invention, does not constitute the limit to the scope of the present invention
It is fixed.
As shown in figures 1 to 6, a kind of accurate type wear-resistant chute automatic welding device, including preceding weldering positioning transporting device 1, with
The matched preceding welder 2 of preceding weldering positioning transporting device 1, automatic turning device 3, rear weldering positioning transporting device 5, position with rear weldering it is defeated
Welder 6 after sending device 5 matched;It is described before weldering positioning transporting device 1 include bracket 11, the rollgang 12 on bracket 11,
Objective table 13 on rollgang 12, the prelocalization plate 14 being located on objective table 13 and rear position plate 15 connect with prelocalization plate 14
The cylinder 15 connect, the objective table 13 go forward to be equipped with multiple pre-determined bit slide posts 16 between positioning plate 14 and rear position plate 15；In advance
Positioning slide post 16 includes location nut 16a, positioning screw 16b and the ball 16c being embedded in positioning screw 16b；Before be welded
Setting 2 includes track 21, the weldment 22 being located on track 21, the ball-screw 23 for driving weldment 22, is slided in weldment 22 by first
Block 24 be equipped with the first welding gun 25, by the second sliding block 26 be equipped with the second welding gun 27, the first welding gun 25, the second welding gun 27 respectively with give
Silk mechanism is connected with atmosphere protection device；The automatic turning device 3 is turned over including bearing support 31, with what bearing support 31 was rotatablely connected
Pivoted frame 32, the overturning motor 33 being located on rollover stand 32, rollover stand 32 is interior to be equipped with lower conveyer belt 35 by lower stepper motor 34, leads to
Stepper motor 36 is crossed equipped with upper conveyor belt 37, lower conveyer belt 35 is equipped with lifting motor 38, and lifting motor 38 adjusts lower conveying
When band 35 is far from upper conveyor belt 37, lower conveyer belt 35 is concordant with rollgang 12；The rollover stand 32 include overturning column 32a and
Column 32b is rotated, lifting motor 38 passes through the transmission device being located on overturning column 32a and connect with lower conveyer belt 35, overturning electricity
Machine 33 is connect by rotating column 32b with rollover stand 32；Weldering positioning transporting device 5 welds bracket 51, rear weldering branch after described after including
Rear weldering rollgang 52 on frame 51, when upper conveyor belt 37 is located at 35 underface of lower conveyer belt, upper conveyor belt 37 welds defeated with after
It send concordant in 52 height of roller-way；The bracket 11 is connect by connection sheet 17 with rollgang 12, and bracket 11 is equipped with and uses bolt
It is fastenedly connected the rack groove 18 of piece 17；12 crossbeam of rollgang is equipped with the crossbeam groove for being bolted connection piece 17
19；The objective table 13 is equipped with limited block 7, and limited block 7 is connect with the limiting cylinder for being located at 13 bottom end of objective table.
Use process is as follows the wing plate of the left and right sides is welded in plate conveyor by artificial spot welding before welding, before welding first
What is completed is positioning of the wear-resistant chute on objective table, and positioning datum is rear position plate 15；Along in roller-way direction of advance, limit
Block 7 positions wear-resistant chute, is pre-positioned slide post 16 at this time and withstands in plate conveyor, and plate conveyor applies under ball 16c effect
One small active force, wear-resistant chute can move, and realize that wear-resistant chute easily moves, moreover, pre-determined bit sliding pillar height
Lower position is adjustable, rotational positioning screw rod 16b, thus it is possible to vary positioning screw 16b and the relative position location nut 16a, thus
It is turned up or is turned down ball position, changes the height of wear-resistant chute, to sum up realizes the pre-determined bit in three directions, this is slided for pre-determined bit
Dynamic column 16 acts on；The switch of cylinder 10 is opened, cylinder 10 pushes prelocalization plate to clamp wear-resistant chute, realizes that wear-resistant chute is carrying
Object platform is accurately positioned；According to the wear-resistant chute of different model, the first sliding block 24,26 relative position of the second sliding block are adjusted, allows first
Welding gun 25 and the second welding gun 27 are directed at weld seam, and motor drives ball-screw 23, and weldment 22 can be moved along track 21, for difference
Limit switch can be arranged in the wear-resistant chute of model on track 21, realize multi-pass welding, complete the welding in a face.
After being soldered a face, wear-resistant chute moves ahead along rollgang 12 under the promotion of rollgang 12, lifting motor 38
Lower conveyer belt 35 is adjusted far from upper conveyor belt 37, lower conveyer belt 35 is concordant with rollgang 12 at this time, and lower stepper motor 34 is opened
Lower conveyer belt 35 is driven to rotate, lower conveyer belt 35 drives wear-resistant chute Forward, when wear-resistant chute is moved fully to lower conveyer belt 35
When upper, lower conveyer belt 35 is driven to rise for lifting motor 38 until wear-resistant chute is clipped in by wear-resistant chute after contacting with upper conveyor belt 37
Between lower conveyer belt 35, upper conveyor belt 37, and then overturn motor 33 and open, rollover stand 32 is driven to rotate 180 °, at this time on
Conveyer belt 37 is located at right above lower conveyer belt 35 and upper conveyor belt 37 is concordant in rear weldering 52 height of rollgang, and 180 ° have overturn
It is again started up at rear lifting motor 38, drives lower conveyer belt 35 far from upper conveyor belt 37, and then upper stepper motor 36 drives
Conveyer belt 37 rotates, and welds rollgang 52 after wear-resistant chute is transferred to from upper conveyor belt 37, completes the overturning of wear-resistant chute
And conveying, and be transversely to the conveying direction in transmission process, the relative position of wear-resistant chute be almost it is constant, conveying
Accurate positioning is maintained in journey.
The welding in the last one face, as an implementation, rear welder 6 are configured with preceding 2 functional parts of welder
It is identical, it is the positioning that three directions are completed by rear weldering positioning transporting device 5 first, rear welder 6 completes weld seam welding, entire to weld
Termination process terminates.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of accurate type wear-resistant chute automatic welding device, which is characterized in that including preceding weldering positioning transporting device (1), with
The matched preceding welder (2) of preceding weldering positioning transporting device (1), automatic turning device (3) weld positioning transporting device (5), with after afterwards
Weld positioning transporting device (5) matched rear welder (6);
Weldering positioning transporting device (1) includes bracket (11), the rollgang (12) on bracket (11), rollgang (12) before described
On objective table (13), the prelocalization plate (14) that is located on objective table (13) and rear position plate (15), with prelocalization plate (14) even
The cylinder (10) connect, the objective table (13) are gone forward to be equipped with the sliding of multiple pre-determined bits between positioning plate (14) and rear position plate (15)
Column (16)；
Pre-determined bit slide post (16) includes location nut (16a), positioning screw (16b) and is embedded in positioning screw (16b)
Ball (16c)；
Preceding welder (2) includes track (21), the weldment (22) being located on track (21), the ball-screw for driving weldment (22)
(23), the first welding gun (25) are equipped with by the first sliding block (24) in weldment (22), are equipped with the second welding gun by the second sliding block (26)
(27), the first welding gun (25), the second welding gun (27) are connect with wire feeder and atmosphere protection device respectively；
The automatic turning device (3) includes bearing support (31), the rollover stand (32) being rotatablely connected with bearing support (31), is located at and turns over
Overturning motor (33) on pivoted frame (32), rollover stand (32) is interior to be equipped with lower conveyer belt (35) by lower stepper motor (34), passes through
Upper stepper motor (36) is equipped with upper conveyor belt (37), and lower conveyer belt (35) is equipped with lifting motor (38), and lifting motor (38) is adjusted
When saving lower conveyer belt (35) far from upper conveyor belt (37), lower conveyer belt (35) is concordant with rollgang (12).
2. a kind of accurate type wear-resistant chute automatic welding device according to claim 1, which is characterized in that the overturning
Frame (32) includes overturning column (32a) and rotation column (32b), and lifting motor (38) is by being located in overturning column (32a)
Transmission device is connect with lower conveyer belt (35), and overturning motor (33) is connect by rotating column (32b) with rollover stand (32).
3. a kind of accurate type wear-resistant chute automatic welding device according to claim 2, which is characterized in that weldering after described
Positioning transporting device (5) welds bracket (51), welds the rear weldering rollgang (52) on bracket (51) afterwards after including, work as upper conveyor belt
(37) when being located at immediately below lower conveyer belt (35), upper conveyor belt (37) is concordant in rear weldering rollgang (52) height.
4. a kind of accurate type wear-resistant chute automatic welding device according to claim 3, which is characterized in that the bracket
(11) it is connect by connection sheet (17) with rollgang (12), bracket (11) is equipped with the bracket for being bolted connection piece (17)
Groove (18).
5. a kind of accurate type wear-resistant chute automatic welding device according to claim 4, which is characterized in that the conveying
Roller-way (12) crossbeam is equipped with the crossbeam groove (19) for being bolted connection piece (17).
6. a kind of accurate type wear-resistant chute automatic welding device according to any one of claims 1 to 5, feature exist
In the objective table (13) is equipped with limited block (7), limited block (7) and the limiting cylinder for being located at objective table (13) bottom end
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811327379.1A CN109175871A (en) | 2018-11-08 | 2018-11-08 | A kind of accurate type wear-resistant chute automatic welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811327379.1A CN109175871A (en) | 2018-11-08 | 2018-11-08 | A kind of accurate type wear-resistant chute automatic welding device |
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| Publication Number | Publication Date |
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| CN109175871A true CN109175871A (en) | 2019-01-11 |
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ID=64938582
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811327379.1A Pending CN109175871A (en) | 2018-11-08 | 2018-11-08 | A kind of accurate type wear-resistant chute automatic welding device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101041280B1 (en) * | 2010-09-13 | 2011-06-14 | 김정훈 | Automatic welding machine for conveyor roller |
| CN203343676U (en) * | 2013-07-02 | 2013-12-18 | 云南农垦科赛特机械制造有限公司 | Middle trough turnover device of scrapper blade machine |
| CN204977500U (en) * | 2015-05-20 | 2016-01-20 | 卓达新材料科技集团有限公司 | Panel turnover machine |
| CN105436758A (en) * | 2015-12-17 | 2016-03-30 | 郑州市嵩阳煤机制造有限公司 | Specialized automatic assembly welding machine tool for middle trough |
| CN207361207U (en) * | 2017-10-30 | 2018-05-15 | 领跃电子科技（珠海）有限公司 | A kind of conveying device applied to surface of steel plate detection |
| CN207712788U (en) * | 2017-12-27 | 2018-08-10 | 东莞理工学院 | A kind of logistics use for laboratory ball platform |
| CN209465895U (en) * | 2018-11-08 | 2019-10-08 | 山东省田庄煤矿有限公司 | A kind of accurate type wear-resistant chute automatic welding device |
-
2018
- 2018-11-08 CN CN201811327379.1A patent/CN109175871A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101041280B1 (en) * | 2010-09-13 | 2011-06-14 | 김정훈 | Automatic welding machine for conveyor roller |
| CN203343676U (en) * | 2013-07-02 | 2013-12-18 | 云南农垦科赛特机械制造有限公司 | Middle trough turnover device of scrapper blade machine |
| CN204977500U (en) * | 2015-05-20 | 2016-01-20 | 卓达新材料科技集团有限公司 | Panel turnover machine |
| CN105436758A (en) * | 2015-12-17 | 2016-03-30 | 郑州市嵩阳煤机制造有限公司 | Specialized automatic assembly welding machine tool for middle trough |
| CN207361207U (en) * | 2017-10-30 | 2018-05-15 | 领跃电子科技（珠海）有限公司 | A kind of conveying device applied to surface of steel plate detection |
| CN207712788U (en) * | 2017-12-27 | 2018-08-10 | 东莞理工学院 | A kind of logistics use for laboratory ball platform |
| CN209465895U (en) * | 2018-11-08 | 2019-10-08 | 山东省田庄煤矿有限公司 | A kind of accurate type wear-resistant chute automatic welding device |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210727 Address after: 272000 Wangyin Town, high tech Zone, Jining City, Shandong Province Applicant after: Shandong Menglu Mining Engineering Co.,Ltd. Address before: 272000 Tianzhuang Coal Mine, high tech Development Zone, Jining City, Shandong Province Applicant before: SHANDONG TIANZHUANG COAL MINE Co.,Ltd. |
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