CN110255063B - Method and system for mounting chain and hopper of chain bucket conveyor - Google Patents
Method and system for mounting chain and hopper of chain bucket conveyor Download PDFInfo
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- CN110255063B CN110255063B CN201910559432.9A CN201910559432A CN110255063B CN 110255063 B CN110255063 B CN 110255063B CN 201910559432 A CN201910559432 A CN 201910559432A CN 110255063 B CN110255063 B CN 110255063B
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- chain
- hopper
- winch
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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
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/12—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
- B65G17/126—Bucket elevators
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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
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/30—Details; Auxiliary devices
- B65G17/32—Individual load-carriers
- B65G17/36—Individual load-carriers having concave surfaces, e.g. buckets
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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
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/30—Details; Auxiliary devices
- B65G17/38—Chains or like traction elements; Connections between traction elements and load-carriers
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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
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/02—Belt- or chain-engaging elements
- B65G23/04—Drums, rollers, or wheels
- B65G23/06—Drums, rollers, or wheels with projections engaging abutments on belts or chains, e.g. sprocket wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/20—Chain, belt, or friction drives, e.g. incorporating sheaves of fixed or variable ratio
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chain Conveyers (AREA)
Abstract
The invention discloses a method and a system for mounting a chain and a hopper of a chain hopper conveyor. The chain bucket conveyor is divided into a lower horizontal section, a vertical section and an upper horizontal section, and the installation method comprises the following steps: an assembling platform is erected at the end part of the lower horizontal section, and a fixed frame is erected at the top part of the vertical section; mounting a chain and a hopper in the conveying direction; mounting a chain and a hopper in the return direction; connecting the chain at the end part of the conveying direction with the chain at the end part of the returning direction to form an annular chain; the chain and the hopper in the conveying direction and the returning direction are installed in the same mode, the chain and the hopper are pulled by a winch, and the chain and the hopper are installed in a mode of pulling and assembling at the same time. The chain and hopper can be installed without being limited by hoisting space and site by adopting the invention while assembling, and the chain and hopper has the advantages of safety, stability, easy control and continuous construction.
Description
Technical Field
The invention relates to the technical field of material conveying equipment installation, in particular to a method and a system for installing a chain and a hopper of a bucket chain conveyor.
Background
There are many material conveying systems in the production process of iron and steel enterprises, wherein the process involving a vertical conveying link needs to adopt a chain bucket conveyor. The conveying principle of the chain bucket conveyor is that a conveying chain drives a small hopper to convey materials, so that the chain and the hopper are main components of the conveyor. The traditional installation method is to assemble a plurality of sections of units by chains and hoppers, and then to hoist the units by a hoisting machine in sections to penetrate into a conveyor box body from a high position. However, this method is limited in installation space, and the hoisting machinery is expensive and uneconomical, and installation is performed in stages, which makes continuous construction impossible.
Disclosure of Invention
Based on the above problems, the present invention aims to provide a method and a system for installing a chain and a hopper of a chain bucket conveyor, so that the installation of the chain and the hopper is not limited by a hoisting space and a site, and the method and the system have the advantages of safety, stability, easy control and continuous construction.
The above purpose is realized by the following technical scheme:
according to one aspect of the present invention, there is provided a chain and hopper installation method for a bucket conveyor, the bucket conveyor being divided into a lower horizontal section, a vertical section, and an upper horizontal section, the installation method comprising: erecting an assembling platform and a fixing frame, wherein the assembling platform is arranged at the end part of the lower horizontal section, and the fixing frame is arranged at the top of the vertical section; mounting a chain and a hopper in the conveying direction; mounting a chain and a hopper in the return direction; connecting the chain at the end part of the conveying direction with the chain at the end part of the returning direction to form an annular chain; wherein, the step of installing the chain and the hopper in the conveying direction and the returning direction is the same, and the steps comprise the following steps:
assembling a chain and a hopper on the assembling platform, and simultaneously, horizontally pulling the starting end of the chain to the lower part of the vertical section by a winch to complete the installation of the lower horizontal section and disconnect the connection of the winch and the chain;
fixing a pulley of a winch on the fixing frame, enabling a wire rope of the winch to penetrate through the pulley and be connected with a chain starting end located below the vertical section, starting the winch to lift the chain, continuously assembling the chain and the hopper at the tail part of the chain, stopping traction when the chain starting end is lifted above the vertical section, fixing the chain starting end on the fixing frame, completing installation of the vertical section, and disassembling the wire rope of the winch;
connecting the winch with the starting end of the chain above the vertical section, starting the winch, horizontally pulling the chain, continuously assembling the chain and the hopper at the tail part of the chain at the same time until the starting end of the chain is positioned at the end part of the upper horizontal section, stopping pulling, completing the installation of the upper horizontal section, and disconnecting the connection of the winch and the chain.
Preferably, in the installation method, the hoist is towed or lifted by being connected to chains located at both sides of the hopper.
Preferably, the set-up assembly platform comprises: building an assembly platform by adopting two tracks, a plurality of support legs and a plurality of connecting beams; and arranging the built assembling platform on the lower platform foundation at the lower horizontal section.
Preferably, the set-up assembly platform further comprises: and adjusting the height of the assembling platform.
Preferably, the set-up fixture comprises: constructing a door-shaped fixing frame by using profile steel; and fixedly arranging the bottom of the fixing frame on the upper platform foundation at the upper horizontal section.
Preferably, the hoist performs the pulling or lifting of the chain by passing the wire rope through manholes provided at the lower horizontal section end, the vertical section top, and the upper horizontal section end.
Preferably, when the starting end of the chain is lifted to the upper part of the vertical section, the chain starting end is hooked by a chain block and fixed on the fixed frame.
According to another aspect of the present invention, there is provided a chain and hopper mounting system for a bucket conveyor, the system comprising: the chain bucket conveyor comprises a chain bucket conveyor, an assembling platform, a traction device and a fixing frame, wherein the chain bucket conveyor is divided into a lower horizontal section, a vertical section and an upper horizontal section, a lower platform foundation is arranged at the lower horizontal section, and an upper platform foundation is arranged at the upper horizontal section; the assembling platform is arranged on the lower platform foundation and positioned at the end part of the lower horizontal section and used for assembling the chain and the hopper; the fixed frame is arranged on the upper platform base and is positioned right above the vertical section and used for fixing the chain and assisting the traction device in chain traction and lifting; the traction device is arranged on the lower platform foundation or the upper platform foundation and is used for realizing chain traction of the lower horizontal section, the vertical section and the upper horizontal section so as to finish the installation of the chain and the hopper.
Preferably, the assembly platform comprises: the device comprises two parallel tracks, a plurality of support legs positioned at the bottoms of the tracks and a plurality of connecting beams connected between the two tracks; the top of the track is provided with a groove, and when the chain and the hopper are assembled, the chain is arranged in the groove; and when in traction, the traction device is connected with the two chains in the groove to finish traction.
Preferably, the fixed frame is a door-shaped frame, and the traction device is a winch; and pulleys of a winch are arranged on the door-shaped frame to finish traction and lifting of the vertical section of chain. Further, when the chain is lifted to the top of the vertical section, the starting end of the chain is fixed on the door-shaped frame through a hand hoist, so that the chain of the subsequent upper horizontal section is installed in a traction manner.
Compared with the prior art, the chain and hopper installation method and system of the chain bucket conveyor complete the installation of the chain bucket of the conveyor by adopting the winch to pull the chain and the hopper; the chain and the hopper can be continuously installed while the chain and the hopper are assembled. The invention ensures that the installation is not limited by hoisting space and site, and the continuous construction can be realized; and the traction structure is stable, and the traction process is stable, safe and easy to control. The invention can use local materials, is simple to implement, has sufficient theoretical basis, and has popularization value in the installation of chains and hoppers in limited space.
Drawings
FIG. 1a is a schematic view of the construction of the bucket conveyor of the present invention;
FIG. 1b is a cross-sectional view taken at A-A of FIG. 1 a;
FIG. 1c is a cross-sectional view taken at B-B of FIG. 1 a;
FIG. 1d is a cross-sectional view of the hopper at C-C in FIG. 1 b;
FIG. 2a is a schematic view of the chain installation of the bucket conveyor of the present invention;
FIG. 2b is a side view of the chain in the bucket conveyor of the present invention;
FIG. 2c is a schematic view of the chain and sprocket drive of the bucket conveyor of the present invention;
FIG. 3a is a front view of the assembly platform of the present invention;
FIG. 3b is a side view of the assembly platform of the present invention;
FIG. 3c is a top view of the assembly platform of the present invention;
FIG. 4 is a schematic view of the installation of the lower horizontal strand of chain and hopper in the conveying direction of the present invention;
FIG. 5 is a schematic view of the vertical strand chain and hopper installation of the present invention in the conveying direction;
FIG. 6 is a schematic view of the mounting of the chain and hopper of the upper horizontal run of the present invention in the conveying direction;
FIG. 7 is a schematic view of the installation process of the return direction chain and hopper of the present invention, including a lower horizontal section, a vertical section, and an upper horizontal section;
fig. 8 is a schematic view of the chain connection at the end of the conveying direction and the return direction in the present invention.
Wherein, 110 chains, 112 chain connecting pins, 111 chain links; a 120 hopper; 130 a box body; 131 inner rails of the box body; 140 manhole holes; 150 sprocket wheels; 190 a platform foundation; 180 lower platform foundation; 200 assembling a platform; 210 tracks; 220 legs; 230 connecting the beams; 300 a traction device; a 400-door frame; 410 a pulley.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention:
fig. 1a to 1c schematically show the structure of a bucket conveyor.
As shown in fig. 1a, the bucket conveyor is generally divided into a lower horizontal section provided with a lower platform base 180, a vertical section provided with an upper platform base 190, and an upper horizontal section according to the arrangement position.
As shown in fig. 1a to 1d, the bucket conveyor includes a box 130, a sprocket 150, a hopper 120, and a driving device (not shown) according to the function of the apparatus; the box body 130 is a structural part of a bucket conveyor, and the two sides in the box body are provided with box body inner rails 131 on which chain wheels 150 run; the sprocket 150 and the hopper 120 are the main material conveying mechanism, the sprocket 150 is arranged inside the box body 130, and the hopper 120 is arranged between the two chains 110, as shown in fig. 1 b; the driving device is composed of a motor and a speed reducer and is used for driving the chain 110 to drive the hopper 120 to convey materials.
As shown in fig. 1a, the chain 110 includes a conveying direction (forward direction) and a return direction (return direction); wherein, the conveying direction is above the chain wheel 150 and is the material conveying direction; the return direction is below the sprocket 150 and is the direction of return of the chain 110.
As shown in fig. 1a, the box 130 at the end of the lower horizontal segment, the top of the vertical segment and the end of the upper horizontal segment is respectively provided with an access hole 140 for facilitating the installation of the chain 110 and the hopper 120, and an access hole door can be installed at the access hole 140.
Fig. 2a to 2c schematically show the manner of connection of the chain 110 in the bucket conveyor and the manner of driving between the chain 110 and the sprocket 150. As shown in fig. 2a to 2c, the chain 110 is formed by inserting the protruding end of the chain connecting pin 112 into the connecting pin hole of two adjacent links 111 to connect the links 111. As shown in fig. 2c, the sprocket 150 rotates in one direction to move the chain 110 and the hopper 120 connected thereto.
Fig. 3a to 3c schematically show the structure of the assembly platform 200. As shown in fig. 3a to 3c, the assembly platform 200 is mainly composed of two rails 210 located at the upper part, a plurality of legs 220 located at the lower part and fixed at the bottom of the rails 210, and a plurality of coupling beams 230 connected between the two rails 210. Further, the rails 210, the legs 220, and the coupling beams 230 are made of channel steel, and the grooves of the rails 210 face upward so that the chains 110 are placed in the grooves when the chains 110 and the bins 120 are assembled.
Fig. 4 to 6 schematically show the mounting flow in the forward direction. Meanwhile, fig. 4 and 5 also schematically show the mounting system of the present invention, including: the chain bucket conveyor comprises a chain bucket conveyor, an assembly platform 200, a traction device 300 and a fixing frame, wherein the assembly platform 200 is positioned at the end part of a lower horizontal section, the traction device 300 is a winch, and the fixing frame is a door-shaped frame 400, is positioned on an upper platform foundation 190 and is positioned right above a vertical section. Fig. 7 schematically shows the installation flow in the return direction. Fig. 8 schematically shows a structure in which the ends of the chain 110 in the forward and return directions are closed. As shown in fig. 4 to 8, a preferred embodiment of the present invention provides a method for mounting a chain 110 and a hopper 120 of a bucket conveyor: the method comprises the following steps:
s10, the assembling platform 200 is set up. An assembling platform 200 is erected at the tail part of the lower horizontal section on the lower platform foundation 180; the rails 210, the legs 220 and the coupling beams 230 of the assembly platform 200 are made of channel steel, and the groove side of the channel steel rail 210 faces upward, so that the chains 110 and the hoppers 120 can be assembled. Wherein the tail of the lower horizontal segment is the lower end of the bucket conveyor shown in fig. 4.
S20, mounting of the forward direction chain 110 and the hopper 120. The installation order is horizontal section down, vertical section to and go up horizontal section, specifically includes the following steps:
s21, lower horizontal segment: assembling the chains 110 and the hoppers 120 on the assembly platform 200, as shown in fig. 3c, the two chains 110 are respectively placed in the grooves of the two rails 210, the hoppers 120 are installed between the two chains 110, after the chains 110 and the hoppers 120 are assembled to a certain length, for example, when the length is 15m, the winch can be placed at the head of the lower horizontal section, but not limited thereto, as long as the pulling direction is consistent with the arrow, the steel wire rope of the winch is connected with the two chains 110, the winch is started to pull the chains 110 in the horizontal direction, the front ends of the chains 110 and the hoppers 120 are pulled into the box 130, so that the chain wheel 150 runs on the inner rail 131 of the box, slowly passes through the lower horizontal section box 130, and meanwhile, the chains 110 and the hoppers 120 at the tail end continue to be assembled and lengthened; when the starting end of the chain 110 to be assembled reaches the lower part of the vertical section (the head part of the lower horizontal section), stopping traction, and completing the installation of the chain 110 and the hopper 120 of the lower horizontal section, as shown in fig. 4; the winch is then disconnected from the chain 110 in preparation for passing through the vertical section. It should be noted that: the present invention schematically illustrates the towing means 300 for more clearly understanding the towing direction, but the location of the towing means 300 is not limited as long as the towing direction is as indicated by the arrows in fig. 4 to 8.
S22, vertical segment: firstly, a portal frame 400 for hanging a pulley 410 of a winch is erected on an upper platform foundation 190 at an upper horizontal section, and the portal frame 400 is erected by section steel and is positioned right above a vertical section. Then, the steel cable of the winch is passed through the pulley 410 hung on the door-shaped frame 400, and the steel cable is passed through the top manhole 140 of the upper horizontal section and connected with the chain 110 positioned below the vertical section, as shown in fig. 5; the traction chain 110 (and the hopper 120) moves upwards slowly, and meanwhile, the chain 110 and the hopper 120 at the tail part of the lower horizontal section are continuously spliced and lengthened; stopping traction when the upper ends of the chain 110 and the hopper 120 reach the tail end of the upper horizontal section (the top of the vertical section); then, the chain 110 and the start end of the hopper 120 are fixed to the gantry 400 by a chain block (not shown); and (4) removing the steel wire rope of the winch and preparing to pass through the upper horizontal section. The gantry 400 is removable and may be retained for continued use while the return direction chain 110 and hopper 120 are installed.
S23, upper horizontal segment: according to the installation method of the chain 110 and the hopper 120 of the lower horizontal segment, a winch is connected to the starting end of the chain fixed to the gate frame 400 through a wire rope, and the chain 110 is pulled out of the upper horizontal segment, as shown in fig. 6. To this end, the forward direction chain 110 and the hopper 120 are mounted in place.
S30, return direction chain 110 and hopper 120 installation. As shown in fig. 7, the installation is performed using the same installation method and procedure as the forward direction, so that the return direction chain 110 and the hopper 120 are installed in place. It should be noted that: if the gate frame 400 is not removed after the installation of the vertical section in the forward direction, the step of setting up the gate frame 400 may be omitted when the installation of the vertical section in the return direction is performed.
S40, closing the chain 110. After the forward direction and return direction chains 110 and the hoppers 120 are installed in place, the upper and lower chains 110 at the head and tail ends of the bucket conveyor are connected and closed, and the installation of the conveyor chains 110 and the hoppers 120 is completed. That is, as shown in fig. 8, the bucket conveyor upper stage section: connecting the forward direction chain 110 above the sprocket 150 with the return direction chain 110 below the sprocket 150; lower end of bucket chain conveyor: the forward direction chain 110 above the sprocket 150 is connected to the return direction chain 110 below the sprocket 150 such that the chains 110 on each side of the hopper 120 conveyor are connected in a loop. It should be noted that the chains 110 on both sides of the hopper 120 are installed synchronously, and fig. 4 to 8 only schematically illustrate the installation on one side of the bucket conveyor, but do not limit the present invention.
In the embodiment, the chain 110 and the hopper 120 are installed by adopting the winch to pull the chain 110, and the chain 110 and the hopper 120 are assembled while pulling, so that the chain 110 and the hopper 120 can be continuously installed, and the whole installation and pulling process is stable, safe and easy to control. The traction process is more balanced and stable by adopting the mode that the winch is connected with the two chains 110; thereby for the loading and unloading of chain bucket conveyor provide powerful guarantee, make it can even running, and then prolonged life. The whole installation system is stable, compact, light and small in structure, space is saved, the installation method is not limited by hoisting space and site, local materials can be obtained, the implementation is simple, theoretical basis is sufficient, and the installation system has popularization value in installation of the chain 110 and the hopper 120 in limited space.
Claims (7)
1. A method for installing a chain and a hopper of a bucket conveyor, wherein the bucket conveyor is divided into a lower horizontal section, a vertical section and an upper horizontal section, and is characterized by comprising the following steps: erecting an assembling platform and a fixing frame, wherein the assembling platform is arranged at the end part of the lower horizontal section, and the fixing frame is arranged at the top of the vertical section; mounting a chain and a hopper in the conveying direction; mounting a chain and a hopper in the return direction; connecting the chain at the end part of the conveying direction with the chain at the end part of the returning direction to form an annular chain; wherein, the step of installing the chain and the hopper in the conveying direction and the returning direction is the same, and the steps comprise the following steps:
assembling a chain and a hopper on the assembling platform, and simultaneously, horizontally pulling the starting end of the chain to the lower part of the vertical section by a winch to complete the installation of the lower horizontal section and disconnect the connection of the winch and the chain;
fixing a pulley of a winch on the fixing frame, enabling a wire rope of the winch to penetrate through the pulley and be connected with a chain starting end located below the vertical section, starting the winch to lift the chain, continuously assembling the chain and the hopper at the tail part of the chain, stopping traction when the chain starting end is lifted to be above the vertical section, fixing the chain starting end on the fixing frame, completing installation of the vertical section, and disassembling the wire rope of the winch;
connecting the winch with the starting end of the chain above the vertical section, starting the winch, horizontally pulling the chain, continuously assembling the chain and the hopper at the tail part of the chain at the same time until the starting end of the chain is positioned at the end part of the upper horizontal section, stopping pulling, completing the installation of the upper horizontal section, and disconnecting the connection of the winch and the chain.
2. The chain and bucket installation method of claim 1 in which the hoist is pulled or lifted by connecting to chains on both sides of the bucket.
3. The method for mounting a chain and a hopper of a bucket conveyor according to any one of claims 1 to 2, wherein the erection and assembly platform comprises: building an assembly platform by adopting two tracks, a plurality of support legs and a plurality of connecting beams; and arranging the built assembling platform on the lower platform foundation at the lower horizontal section.
4. The method of claim 3, wherein the set-up assembly station further comprises: and adjusting the height of the assembling platform.
5. The method for mounting a chain and a hopper of a bucket conveyor according to any one of claims 1 to 2, wherein the step of setting up the fixing frame comprises: constructing a door-shaped fixing frame by using profile steel; and fixedly arranging the bottom of the fixing frame on the upper platform foundation at the upper horizontal section.
6. The method of claim 1, wherein the hoist tows or lifts the chain by passing a wire rope through manholes provided at the lower horizontal segment end, the top of the vertical segment, and the upper horizontal segment end.
7. The method of claim 1, wherein when the chain start end is lifted above the vertical section, the chain start end is hooked by a chain block and fixed to the fixing frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910559432.9A CN110255063B (en) | 2019-06-26 | 2019-06-26 | Method and system for mounting chain and hopper of chain bucket conveyor |
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| CN201910559432.9A CN110255063B (en) | 2019-06-26 | 2019-06-26 | Method and system for mounting chain and hopper of chain bucket conveyor |
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| CN110255063B true CN110255063B (en) | 2021-04-06 |
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Families Citing this family (3)
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| CN110775528B (en) * | 2019-09-24 | 2020-12-18 | 中国三冶集团有限公司宁波分公司 | Installation method of chain conveyor |
| CN112777234B (en) * | 2020-12-26 | 2022-11-22 | 莱芜市万方煤矿机械有限公司 | Scraper connecting device of scraper elevating conveyor |
| CN113681500A (en) * | 2021-08-30 | 2021-11-23 | 河钢股份有限公司承德分公司 | Chain changing auxiliary device for chain type suspension conveyor and chain changing method |
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