CN112158606A - Swing end beam adjusting device of semi-portal scraper reclaimer and adjusting method thereof - Google Patents
Swing end beam adjusting device of semi-portal scraper reclaimer and adjusting method thereof Download PDFInfo
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- CN112158606A CN112158606A CN202010984368.1A CN202010984368A CN112158606A CN 112158606 A CN112158606 A CN 112158606A CN 202010984368 A CN202010984368 A CN 202010984368A CN 112158606 A CN112158606 A CN 112158606A
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- end beam
- swing end
- portal
- jack
- scraper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/02—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads
- B65G65/06—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads with endless scraping or elevating pick-up conveyors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention relates to a swing end beam adjusting device and method of a semi-portal scraper reclaimer. According to the invention, the scraper arm support device is supported by the scraper arm support device supporting tool, the front end of the portal is lifted by the portal supporting tool so as to be separated from the swinging end beam, and finally the verticality of the swinging end beam relative to the bottom track is straightened by the swinging end beam straightening combination device, so that the high requirements on operation and safety due to the fact that a large-scale hoisting machine is used for secondary hoisting adjustment are avoided, the high-altitude operation amount is reduced, the construction efficiency is improved, the repeated utilization is realized, and the cost is low.
Description
Technical Field
The invention belongs to the technical field of installation of semi-portal scraper reclaimers, and particularly relates to a device and a method for adjusting a swing end beam of a semi-portal scraper reclaimer.
Background
The scraper reclaimer is widely used in raw material yard with bulk material stacking requirement for mine, port, thermal power plant, steel mill, coking plant, cement plant, chemical industry, etc. to convey mineral powder, coal, coke and other material. The gantry box girder bending machine has the characteristics of large volume, large span, heavy mass, special-shaped structure and self-weight downwarping of the gantry box girder, and is high in difficulty, more in constraint conditions and poor in operability in the adjusting process.
The adjustment of the swing end beam of the semi-door type scraper reclaimer is carried out after the semi-door type scraper reclaimer equipment is basically installed and a pitching device (comprising a hoisting device, a scraper arm frame device and an auxiliary lubricating system) is debugged to be qualified, and the verticality of the swing end beam installed on a track is deviated due to the effect of the downward deflection of a portal. In the prior art, when the swing end beam is adjusted, a large-scale hoisting machine is required to carry out secondary hoisting, the adjustment difficulty is high, the construction efficiency is low, and the high-altitude operation amount is large.
Disclosure of Invention
The invention aims to solve the technical problem of providing a swing end beam adjusting device of a semi-portal scraper reclaimer and an adjusting method thereof, which avoid the need of secondary hoisting by using large-scale hoisting machinery, reduce the adjusting difficulty of the swing end beam, improve the construction efficiency and reduce the high-altitude operation amount.
The technical scheme adopted by the invention for solving the technical problems is to provide a swing end beam adjusting device of a semi-portal type scraper reclaimer, which comprises a portal support tool for lifting the front end of a portal, a scraper arm support device support tool for supporting a scraper arm support device and a swing end beam straightening combination device for straightening the verticality of a swing end beam;
the gantry supporting tool comprises a support, a first connecting pipe and a first jack, the support is mounted on a steel structure at the front end of the gantry, the first jack is arranged below the support, and the support is connected with the first jack through the first connecting pipe;
the scraper arm support device supporting tool comprises a base, a supporting frame and a reinforcing rib plate, wherein the lower end of the supporting frame is fixed on the base, and the upper end of the supporting frame is fixed on the scraper arm support device;
swing end beam alignment composite set includes second jack, second connecting pipe, lug, haulage rope and draw gear, the propelling movement direction of second jack to swing end beam and the tractive direction of draw gear to swing end beam are towards swing end beam bottom mounting orbit's relative both sides respectively, be connected through the second connecting pipe between second jack and the swing end beam, the lug is installed on swing end beam, draw gear passes through the haulage rope and is connected with the lug.
And portal support tools are respectively arranged on two sides of the portal front end box body.
The portal supports the frock and is located the factory building concrete column, first jack is installed on the factory building concrete column.
The base is made of H-shaped steel, the supporting frames are arranged on two sides of the base and comprise vertical supporting tubes and inclined supporting tubes located on two sides of the vertical supporting tubes, the base is reinforced through reinforcing rib plates, and the supporting positions of the scraper arm support device are reinforced through reinforcing rib plates.
The scraper arm support device supporting tool is located on the front side of a connecting position of the scraper arm support device and the lifting arm, and the upper end of the scraper arm support device supporting tool corresponds to the position of the reinforcing rib at the first position on the front side of the connecting position on the scraper arm support device.
The second jack and the second connecting pipe are arranged between the side face of the swing end beam body and the factory concrete upright post, the second jack is installed on the factory concrete upright post, the lifting lug is installed on the same side of the swing end beam body side face relative to the second jack, and the traction device is located on the same side of the second jack relative to the swing end beam.
The first jack adopts a hydraulic jack, the second jack adopts a screw jack, and the traction device adopts a chain block.
The technical scheme adopted by the invention for solving the technical problem is to provide a method for adjusting the swing end beam of the semi-gate type scraper reclaimer, and the method uses the device for adjusting the swing end beam of the semi-gate type scraper reclaimer and comprises the following steps:
(1) starting the hoisting device, and lifting the scraper arm frame device by utilizing the lifting arm;
(2) manufacturing a scraper arm support device supporting tool, welding the scraper arm support device supporting tool below a first reinforcing rib position on the front side of a lifting arm connecting position of a scraper arm support device, and welding a reinforcing rib plate on return slideway section steel;
(3) starting the winch device, slowly putting down the steel wire rope, enabling the scraper arm support device supporting tool to be stably supported on the terrace, and enabling the steel wire rope to be in a relaxed state;
(4) manufacturing a portal support tool, symmetrically arranging two pairs of portal support tools on two sides of a box body at the front end of a portal, symmetrically welding supports on two sides of the box body, and welding reinforcing ribs on a main vertical plate of the box body;
(5) a second jack and a second connecting pipe are arranged between the side face of the beam body of the swing end beam and the plant concrete upright post, the second connecting pipe is welded and fixed with the beam body of the swing end beam and can adjust the swing end beam outwards, a lifting lug is welded on the side face of the beam body of the swing end beam, which is opposite to the plant concrete upright post, a traction device is connected with the lifting lug through a traction rope, and the end beam can be adjusted inwards;
(6) jacking the front end of a portal frame through a first jack of the two pairs of portal frame supporting tools to lift a steel structure, disassembling a connecting bolt between the portal frame and a hinged support, adjusting the vertical swing end beam by utilizing the matching between a second jack and a traction device, adjusting the upper and lower connecting plates of the hinged support to be parallel, penetrating the hinged support and a bolt at the joint of the portal frame and applying pretightening force, unloading the first jack and the second jack, and simultaneously unloading the tension of the traction device;
(7) and starting the hoisting device, lifting the scraper arm device to a horizontal state, checking whether the verticality of the swinging end beam is qualified by using the line weight and the steel plate ruler, and welding the stoppers around the upper connecting plate of the hinged support after the verticality is qualified.
And (5) if the verticality of the swing end beam is unqualified in the step (7), repeating the steps (6) and (7) until the verticality is qualified.
And after the adjustment of the swing end beam is finished, dismantling the portal support tool, the scraper arm frame device support tool and the swing end beam straightening combination device respectively.
Advantageous effects
According to the invention, the scraper arm support device is supported by the scraper arm support device supporting tool, so that the acting force of a lifting rope is unloaded, the front end of the portal frame is lifted by the portal frame supporting tool so as to be separated from the swinging end beam, and finally the verticality of the swinging end beam relative to the bottom track is straightened by the swinging end beam straightening combination device.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front structural schematic diagram of the connection between the gantry support tool and the front end of the gantry.
Fig. 3 is a schematic side structure view of the connection between the gantry support tool and the front end of the gantry.
Fig. 4 is a schematic front structural view of the scraper boom device supporting tool supporting the scraper boom device.
Fig. 5 is a schematic side structure view of the scraper boom device supporting tool supporting the scraper boom device.
Fig. 6 is a schematic structural view of the connection of the swing end beam straightening combination device and the swing end beam.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The adjusting device for the swing end beam of the semi-portal scraper reclaimer shown in fig. 1 comprises a portal supporting tool for lifting the front end of a portal 12, a scraper arm support device supporting tool for supporting a scraper arm support device 13 and a swing end beam straightening combination device for straightening the verticality of a swing end beam 14.
As shown in fig. 2 and 3, the gantry supporting tool includes a support 1, a first connecting pipe 2 and a first jack 3. The support 1 is installed on the steel structure of the front end of the portal 12, a first jack 3 is arranged below the support 1, the first jack 3 adopts a hydraulic jack, and the support 1 and the first jack 3 are connected through a first connecting pipe 2. And portal support tools are respectively arranged on two sides of the front-end box body of the portal 12. The portal support tool is located on a basic platform of a plant concrete upright post 16, and the first jack 3 is installed on the basic platform of the plant concrete upright post 16.
As shown in fig. 4 and 5, the support tool for the scraper arm support device comprises a base 6, a support frame 5 and a reinforcing rib plate 4. The lower end of the support frame 5 is fixed on the base 6, and the upper end supports the scraper arm support device 13. The base 6 adopts H shaped steel, and support frame 5 sets up in both sides around the base 6, and support frame 5 includes vertical stay tube and the slope stay tube that is located vertical stay tube both sides. The base 6 is reinforced by a reinforcing rib plate 4. The supporting position of the scraper arm support device 13 is reinforced by a reinforcing rib plate 4. The scraper arm support device supporting tool is located on the front side of the connecting position of the scraper arm support device 13 and the lifting arm 17, and the upper end of the scraper arm support device supporting tool corresponds to the position of a reinforcing rib at a first position on the front side of the connecting position on the scraper arm support device 13, namely the position of a reinforcing rib at a first position of a front-section cylinder of the movable pulley.
As shown in fig. 6, the swing end beam straightening combination device comprises a second jack 7, a second connecting pipe 8, a lifting lug 9, a traction rope 10 and a traction device 11. The pushing direction of the second jack 7 to the swinging end beam 14 and the pulling direction of the traction device 11 to the swinging end beam 14 are respectively towards two opposite sides of the mounting rail 15 at the bottom of the swinging end beam 14.
The second jack 7 and the second connecting pipe 8 are arranged between the side face of the beam body of the swing end beam 14 and the factory concrete upright post 16, the second jack 7 is installed on the factory concrete upright post 16 by adopting a screw jack, the second jack 7 is connected with the swing end beam 14 through the second connecting pipe 8, and the second connecting pipe 8 is welded and fixed with the side face of the beam body of the swing end beam 14. The lifting lug 9 is arranged on the same side of the side face of the beam body of the swing end beam 14 relative to the second jack 7, the traction device 11 is arranged on the same side of the second jack 7 relative to the swing end beam 14, the traction device 11 adopts a chain block, one end of the chain block is connected with the lifting lug 9 through a traction rope 10, and the other end of the chain block is fixed on the track.
The method for adjusting the swing end beam of the semi-gate type scraper reclaimer uses the device for adjusting the swing end beam of the semi-gate type scraper reclaimer, and comprises the following steps:
(1) and starting the hoisting device 18, and slowly lifting the scraper arm frame device 13 by about 150mm by using the lifting arm 17.
(2) A supporting tool of a scraper arm support device is manufactured, a temporary supporting tool is welded below a first reinforcing rib position of a cylinder at the front section of a movable pulley on the scraper arm support device 13, and a reinforcing rib plate 4 is welded on return slide section steel to firmly support.
(3) And starting the hoisting device 18, slowly putting down the steel wire rope, stably supporting the scraper arm frame device supporting tool on the terrace, and releasing the fixed pulley steel wire rope to eliminate the pulling force on the special-shaped gantry 12.
(4) The manufacturing method comprises the steps of manufacturing a portal support tool, symmetrically arranging two pairs of portal support tools on two sides of a box body at the front end of a portal 12 respectively, symmetrically welding support seats 1 on two sides of the box body respectively, and welding reinforcing ribs on a main vertical plate of the box body. Hydraulic jacks are respectively placed under the support 1 and connected with the support 1 through two thick-wall short-circuit steel pipes.
(5) And a second jack 7 and a second connecting pipe 8 are arranged between the side surface of the beam body of the swing end beam 14 and a plant concrete upright 16, and the second connecting pipe 8 is welded and fixed with the beam body of the swing end beam 14 and can adjust the swing end beam 14 outwards. The side face of the swing end beam 14 beam body relative to a plant concrete upright 16 is welded with a lifting lug 9, a traction device 11 is connected with the lifting lug 9 through a traction rope 10, and the end beam 14 can be adjusted inwards.
(6) Jacking the front end of a portal 12 through a first jack 3 of two pairs of portal support tools to lift a steel structure, detaching a connecting bolt between the portal 12 and a hinged support 19, adjusting the vertical swing end beam 14 by utilizing the matching between a second jack 7 and a traction device 11, adjusting the upper and lower connecting plates of the hinged support 19 to be parallel, penetrating a bolt at the joint of the hinged support 19 and the portal 12 and applying pretightening force, unloading the first jack 3 and the second jack (7), and simultaneously unloading the tension of the traction device 11;
(7) and (3) starting the hoisting device 18, lifting the scraper arm device 13 to a horizontal state, checking whether the verticality of the swinging end beam 14 is qualified by using the line weight and the steel plate ruler, welding the hinged support 19 and fixing the peripheral stop blocks of the upper connecting plate after the verticality is qualified, and repeating the steps (6) and (7) until the verticality is qualified if the verticality of the swinging end beam 14 is checked to be unqualified.
After the adjustment of the swing end beam 14 is completed, the gantry support tool, the scraper arm support device support tool and the swing end beam straightening combination device are respectively dismantled.
Claims (10)
1. The utility model provides a half gate-type scraper blade reclaimer swing end beam adjusting device which characterized in that: the device comprises a gantry supporting tool for lifting the front end of a gantry (12), a scraper arm support device supporting tool for supporting a scraper arm support device (13), and a swing end beam straightening combination device for straightening the verticality of a swing end beam (14);
the portal support tool comprises a support (1), a first connecting pipe (2) and a first jack (3), wherein the support (1) is installed on a steel structure at the front end of a portal (12), the first jack (3) is arranged below the support (1), and the support (1) is connected with the first jack (3) through the first connecting pipe (2);
the scraper arm support device supporting tool comprises a base (6) and a supporting frame (5), wherein the lower end of the supporting frame (5) is fixed on the base (6), and the upper end of the supporting frame is fixed with a scraper arm support device (13);
swing end beam alignment composite set includes second jack (7), second connecting pipe (8), lug (9), haulage rope (10) and draw gear (11), second jack (7) are towards the relative both sides of swing end beam (14) bottom mounting rail (15) respectively to the propelling movement direction of swing end beam (14) and draw gear (11) to the tractive direction of swing end beam (14), be connected through second connecting pipe (8) between second jack (7) and swing end beam (14), lug (9) are installed on swing end beam (14), draw gear (11) are connected with lug (9) through haulage rope (10).
2. The adjusting device for the swing end beam of the semi-portal scraper reclaimer of claim 1, characterized in that: and portal support tools are respectively arranged on two sides of the front end box body of the portal (12).
3. The adjusting device for the swing end beam of the semi-portal scraper reclaimer of claim 1, characterized in that: the portal supports the frock and is located factory building concrete column (16), first jack (3) are installed on factory building concrete column (16) basic platform.
4. The adjusting device for the swing end beam of the semi-portal scraper reclaimer of claim 1, characterized in that: the novel scraper arm support device is characterized in that the base (6) is made of H-shaped steel, the support frame (5) is arranged on two sides of the base (6), the support frame (5) comprises a vertical support tube and inclined support tubes located on two sides of the vertical support tube, the base (6) is reinforced through reinforcing rib plates (4), and the supporting position of the scraper arm support device (13) is reinforced through reinforcing rib plates (4).
5. The adjusting device for the swing end beam of the semi-portal scraper reclaimer of claim 1, characterized in that: the scraper arm support device supporting tool is located on the front side of a connecting position of the scraper arm support device (13) and the lifting arm (17), and the upper end of the scraper arm support device supporting tool corresponds to the position of the reinforcing rib at the first position on the front side of the connecting position on the scraper arm support device (13).
6. The adjusting device for the swing end beam of the semi-portal scraper reclaimer of claim 1, characterized in that: second jack (7) and second connecting pipe (8) set up between swing end beam (14) roof beam body side and factory's concrete column (16), install on factory's concrete column (16) second jack (7), lug (9) are installed in swing end beam (14) roof beam body side relative same one side of second jack (7), draw gear (11) relative swing end beam (14) are located same one side of second jack (7).
7. The adjusting device for the swing end beam of the semi-portal scraper reclaimer of claim 1, characterized in that: the first jack (3) adopts a hydraulic jack, the second jack (7) adopts a screw jack, and the traction device (11) adopts a chain block.
8. A method for adjusting a swing end beam of a semi-portal scraper reclaimer, which is characterized in that the device for adjusting the swing end beam of the semi-portal scraper reclaimer in claim 1 is used, and comprises the following steps:
(1) starting a hoisting device (18), and lifting a scraper arm support device (13) by using a lifting arm (17);
(2) manufacturing a scraper arm support device supporting tool, welding the scraper arm support device supporting tool below a first reinforcing rib position on the front side of a connecting position of a lifting arm (17) of a scraper arm support device (13), and welding a reinforcing rib plate (4) on a return slide profile steel;
(3) starting a hoisting device (18), slowly putting down the steel wire rope, and stably supporting the scraper arm support device supporting tool on the terrace to enable the steel wire rope to be in a relaxed state;
(4) manufacturing a portal support tool, symmetrically arranging two auxiliary portal support tools on two sides of a box body at the front end of a portal (12), symmetrically welding supports (1) on two sides of the box body, and welding reinforcing ribs on a main vertical plate of the box body;
(5) a second jack (7) and a second connecting pipe (8) are arranged between the side face of the beam body of the swing end beam (14) and the plant concrete upright post (16), the second connecting pipe (8) is welded and fixed with the beam body of the swing end beam (14) and can adjust the swing end beam (14) outwards, a lifting lug (9) is welded on the side face of the beam body of the swing end beam (14) opposite to the plant concrete upright post (16), a traction device (11) is connected with the lifting lug (9) through a traction rope (10) and can adjust the end beam (14) inwards;
(6) jacking the front end of a portal (12) by using first jacks (3) of two pairs of portal support tools to lift a steel structure, detaching connecting bolts between the portal (12) and a hinged support (19), adjusting the vertical swing end beam (14) by using the matching between a second jack (7) and a traction device (11), adjusting the upper connecting plate and the lower connecting plate of the hinged support (19) to be parallel, penetrating bolts at the joint of the hinged support (19) and the portal (12) and applying pretightening force, unloading the first jack (3) and the second jack (7), and simultaneously unloading the tension of the traction device (11);
(7) and (3) starting the hoisting device (18), lifting the scraper arm device (13) to a horizontal state, checking whether the verticality of the swinging end beam (14) is qualified by using the line weight and the steel plate ruler, and welding the upper connecting plate of the hinged support (19) and fixing the peripheral stop blocks after the verticality is qualified.
9. The method for adjusting the swing end beam of the semi-portal scraper reclaimer according to claim 8, wherein the method comprises the following steps: and (5) if the verticality of the swing end beam (14) is not qualified in the step (7), repeating the steps (6) and (7) until the verticality is qualified.
10. The method for adjusting the swing end beam of the semi-portal scraper reclaimer according to claim 8, wherein the method comprises the following steps: and after the adjustment of the swing end beam (14) is finished, the gantry support tool, the scraper arm support device support tool and the swing end beam straightening combination device are respectively dismantled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010984368.1A CN112158606B (en) | 2020-09-18 | 2020-09-18 | Swing end beam adjusting device of semi-portal scraper reclaimer and adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010984368.1A CN112158606B (en) | 2020-09-18 | 2020-09-18 | Swing end beam adjusting device of semi-portal scraper reclaimer and adjusting method thereof |
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| Publication Number | Publication Date |
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| CN112158606A true CN112158606A (en) | 2021-01-01 |
| CN112158606B CN112158606B (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010984368.1A Active CN112158606B (en) | 2020-09-18 | 2020-09-18 | Swing end beam adjusting device of semi-portal scraper reclaimer and adjusting method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2726288A1 (en) * | 1977-06-10 | 1978-12-14 | Pohlig Heckel Bleichert | Round stockpile discharge machine - has scraper conveyor supported centrally in semi-portal structure and on three point mounting on rail |
| CN103274229A (en) * | 2013-06-05 | 2013-09-04 | 北方重工集团有限公司 | Deformation adjusting device for large-span material fetching machine |
| CN105173768A (en) * | 2015-10-12 | 2015-12-23 | 大连华锐重工集团股份有限公司 | Portal-type three-scraper reclaimer for strip-shaped stockyard |
| CN108059002A (en) * | 2017-12-21 | 2018-05-22 | 中国二冶集团有限公司 | For the installation method of semi-door type scratch board reclaimer |
| CN110745574A (en) * | 2018-07-24 | 2020-02-04 | 中国二十冶集团有限公司 | Installation method of gate type scraper reclaimer |
| CN111285128A (en) * | 2020-03-25 | 2020-06-16 | 南通奥普机械工程有限公司 | Semi-portal scraper reclaimer equipment |
-
2020
- 2020-09-18 CN CN202010984368.1A patent/CN112158606B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2726288A1 (en) * | 1977-06-10 | 1978-12-14 | Pohlig Heckel Bleichert | Round stockpile discharge machine - has scraper conveyor supported centrally in semi-portal structure and on three point mounting on rail |
| CN103274229A (en) * | 2013-06-05 | 2013-09-04 | 北方重工集团有限公司 | Deformation adjusting device for large-span material fetching machine |
| CN105173768A (en) * | 2015-10-12 | 2015-12-23 | 大连华锐重工集团股份有限公司 | Portal-type three-scraper reclaimer for strip-shaped stockyard |
| CN108059002A (en) * | 2017-12-21 | 2018-05-22 | 中国二冶集团有限公司 | For the installation method of semi-door type scratch board reclaimer |
| CN110745574A (en) * | 2018-07-24 | 2020-02-04 | 中国二十冶集团有限公司 | Installation method of gate type scraper reclaimer |
| CN111285128A (en) * | 2020-03-25 | 2020-06-16 | 南通奥普机械工程有限公司 | Semi-portal scraper reclaimer equipment |
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