CN112875158A - Method for replacing fully mechanized coal mining face conveyor chain - Google Patents
Method for replacing fully mechanized coal mining face conveyor chain Download PDFInfo
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- CN112875158A CN112875158A CN202110125449.0A CN202110125449A CN112875158A CN 112875158 A CN112875158 A CN 112875158A CN 202110125449 A CN202110125449 A CN 202110125449A CN 112875158 A CN112875158 A CN 112875158A
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- 238000005065 mining Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims 1
- 238000012546 transfer Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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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
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
- B65G19/20—Traction chains, ropes, or cables
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/24—Equipment for mounting belts, ropes, or chains
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- General Engineering & Computer Science (AREA)
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Abstract
The application discloses a method for replacing a fully mechanized coal mining face conveyor chain, which comprises the following steps: arranging a conveyor in a gate-way connecting roadway; installing a winch in the gateway; disconnecting an old chain of a conveyor from a head and breaking the old chain into a top chain and a bottom chain; dragging the waste section of the top chain to be replaced to the outside of the gate-way connection; connecting the top chain by using winch traction; connecting one end of a new chain with the bottom chain of the conveyor; starting a transporter and a winch to drag the new chain and replace at least part of the bottom chain; and circulating the steps until all the old chains of the conveyor are replaced. The invention can improve the chain replacement efficiency and save the replacement time.
Description
Technical Field
The application relates to the technical field of operation and maintenance of conveyors, in particular to a method for replacing a chain of a conveyor of a fully mechanized coal mining face.
Background
In the safety production process of a coal mine, the whole replacement of the chain of the scraper conveyor on the fully mechanized mining face is time-consuming and labor-consuming work and has potential safety hazards. Generally, when the chain of the scraper conveyor is replaced on the fully mechanized mining face, the top chain of the conveyor is disconnected from a relatively wide place of a machine head or a machine tail, one end of the disconnected chain is connected with a coal mining machine, the other end of the disconnected chain is connected with a new chain, and the chain is replaced through traction of the coal mining machine. Therefore, due to the fact that the conveyor is unevenly stressed, the toothed rail wheel and the sliding shoe of the coal mining machine are seriously abraded, the replacing speed is low, meanwhile, the replaced old scraper chain is difficult to transport outwards, manpower and material resources are wasted, and great potential safety hazards exist.
Based on the technical problems in the chain replacement process of the scraper conveyor, no relevant solution exists, and therefore, an effective solution is urgently needed to solve the problems.
Disclosure of Invention
The utility model aims to overcome the not enough of prior art, provide a method of changing combine and adopt working face conveyer chain, can improve the chain and change efficiency, save the change time.
The technical scheme of the application provides a method for replacing a fully mechanized mining face conveyor chain, which comprises the following steps:
arranging a conveyor in a gate-way connecting roadway;
installing a winch in the gateway;
disconnecting an old chain of the conveyor from a handpiece and causing the old chain to break into a top chain and a bottom chain;
dragging the waste section of the top chain to be replaced to the outside of the gate-way connection;
connecting the top chain by using winch traction;
connecting one end of a new chain with the bottom chain of the conveyor;
starting a transporter and a winch to drag the new chain and replace at least part of the bottom chain;
and circulating the steps until all the old chains of the conveyor are replaced.
Preferably, a plurality of sections of the new chains are loaded into the chain bucket, the chain bucket is placed on the side, close to the front upper, of the standby auxiliary transportation sequential groove, and the opening direction of the chain bucket faces the machine head.
Preferably, the winches are secured by sets of hydraulic props.
Preferably, the hydraulic prop near one side of the transporter is mounted in a prop type.
Preferably, the step of disconnecting the old chain of the conveyor from the head comprises in particular:
inserting the chain stopper into a chain stopper hole of the machine head, pressing a motor of the machine head, and installing a safety pin after the motor is pressed in place;
contracting a tensioning oil cylinder at the tail of the machine, and closing a liquid inlet stop valve of the tensioning oil cylinder after the tensioning oil cylinder is completely withdrawn;
reversing the motor to loosen the old chain to a state that the chain ring can be removed, removing the chain ring at the machine head, and operating the motor to rotate the bottom chain out of the chain wheel;
the motor is unlocked, a safety pin is installed after the motor is completely disengaged from the old chain, and the chain stopper is removed.
Preferably, the step of connecting one end of the new chain to the bottom chain of the conveyor specifically comprises:
and installing and fixing a chain guide groove on the machine head, pulling out the new chain to be arranged in the chain guide groove, connecting the new chain with the bottom chain by using a chain connecting ring, and installing an expansion pin.
Preferably, the step of dragging the waste section of the top chain to be replaced to the outside of the gate way along the gate way specifically comprises:
an operator drags the top chain from the position where the head is disconnected to the tail direction to form the waste section;
and drawing the waste sections to the outside of the crossheading connecting roadway by a special vehicle to be sequentially paved.
Preferably, the length of the scrap section is the same as the length of the new chain for each replacement.
Preferably, after all the old chains are replaced, the top chain and the bottom chain of the new chain at the machine head are connected through the chain connecting ring, the tension is measured through the chain measuring device, the conveyor is started to run without load for 2-3 cycles, the tension is tested again, and normal production is recovered after the tension requirement is met.
Preferably, the step of disconnecting the old chain of the conveyor from the head further comprises, before:
stopping cutting coal when a chain wheel of the machine head is pushed to a mining stopping line;
completely emptying the coal in the top chain and the bottom groove of the conveyor, and stopping the conveyor after a chain connecting ring of the conveyor is rotated to a machine head position;
the working face support side protection plate and the telescopic beam are all punched out;
and closing the liquid inlet stop valve of the support in the operation area, locking the support in the operation area, and powering off, locking and locking the conveyer, the reversed loader and the crusher.
After adopting above-mentioned technical scheme, have following beneficial effect: according to the method, the chain is replaced by adopting the cooperation of the conveyor and the winch, so that the chain replacing efficiency can be improved, and meanwhile, in the replacing process, no operating personnel need to be arranged in the conveyor, so that the operation safety can be ensured.
Drawings
The disclosure of the present application will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:
FIG. 1 is a schematic process flow diagram of one embodiment of the present invention;
FIG. 2 is a schematic diagram of a work surface arrangement in one embodiment of the present invention.
Reference symbol comparison table:
a gateway connecting lane 10, a main and auxiliary transportation gateway 11, a transportation gateway 12 and a standby and auxiliary transportation gateway 13;
the conveyor 20: a head 21 and a tail 22;
Detailed Description
Embodiments of the present application are further described below with reference to the accompanying drawings.
It is easily understood that according to the technical solutions of the present application, those skilled in the art can substitute various structures and implementations without changing the spirit of the present application. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present application, and should not be construed as limiting or restricting the technical solutions of the present application in their entirety.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Throughout the description of the present application, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The foregoing is to be understood as belonging to the specific meanings in the present application as appropriate to the person of ordinary skill in the art.
In an embodiment of the present invention, a method for replacing a chain of a fully mechanized mining face conveyor 20 is disclosed, comprising the steps of:
placing the conveyor 20 in the gateway 10;
arranging a winch 30 in the gateway 10;
disconnecting the old chain of the conveyor 20 from the head 21 and breaking the old chain into a top chain and a bottom chain;
dragging the waste section of the top chain to be replaced out of the gate way 10;
connecting the top chain by using a winch 30 in a traction manner;
connecting one end of the new chain to the bottom chain of the conveyor 20;
starting the transporter 20 and the winch 30 to drag a new chain and replace at least part of the bottom chain;
the above steps are cycled until all of the old chains of conveyor 20 have been replaced.
By the method, the mode that the chain is changed by the aid of the cooperative traction of the transporter 20 and the winch 30 can be used for improving the time for changing the chain, so that economic benefits are improved, in addition, in the changing process, operating personnel do not need to be arranged in the transporter 20, operation safety can be guaranteed, the changed old chain is dragged out of the crossheading roadway 10, the area of changing operation cannot be affected, later-stage recycling can be facilitated, and normal coal cutting production cannot be affected by recycling the old chain.
In some embodiments of the invention, new lengths of chain are loaded into hopper 40 and hopper 40 is placed on the side of standby hopper 13 adjacent to the highwall, with the opening of hopper 40 facing nose 21. The novel chain that will the multistage needs to be changed is placed in chain bucket 40, when changing, shifts the chain bucket 40 that will load one section new chain to the change region at every turn and changes, and the occupation space of new chain is less when changing the chain like this.
In some embodiments of the invention, the drawworks 30 are secured by multiple sets of hydraulic struts. The winch 30 is arranged at the intersection of the gateway 10 and the transportation gateway 12 and is close to the 1.5-meter position of the corner of the gateway 10, 3 DW38-300/120 type single hydraulic supports are respectively used for fixing the left side and the right side of the winch 30, 2 DW42-200/100 type single hydraulic supports are respectively used for fixing the front side and the rear side, the angle between each single hydraulic support and a roadway bottom plate is about 70 degrees, and the anti-falling rope is hung on each single hydraulic support.
In some embodiments of the invention, the hydraulic prop near one side of the conveyor 20 is prop mounted. In this way, the installation robustness of the winch 30 can be improved.
In some embodiments of the invention, the step of disconnecting the old chain of conveyor 20 from head 21 comprises in particular:
inserting the chain stopper into a chain stopper hole of the machine head 21, pressing a motor of the machine head 21, and installing a safety pin after the motor is pressed in place;
contracting the tensioning oil cylinder of the tail 22, and closing a liquid inlet stop valve of the tensioning oil cylinder after the tensioning oil cylinder is completely withdrawn;
reversing the motor to loosen the old chain to a state that the chain connecting ring can be removed, removing the chain connecting ring at the machine head 21, and operating the motor to rotate the bottom chain out of the chain wheel;
the motor is unlocked, the safety pin is installed after the motor is completely disengaged from the old chain, and the chain stopper is removed.
In some embodiments of the present invention, the step of connecting one end of the new chain to the bottom chain of the conveyor 20 specifically comprises:
a fixed chain guide groove is arranged on the machine head 21, a new chain is pulled out and arranged in the chain guide groove, the new chain is connected with the bottom chain by using a chain connecting ring, and an expansion pin is arranged.
In some embodiments of the present invention, the step of dragging the waste segment of the top chain to be replaced to the outside of the gate roadway 10 specifically includes:
an operator drags the top chain from the position where the head 21 is disconnected to the direction of the tail 22 to form a waste section;
and drawing the waste sections to the outside of the gate road 10 by the special vehicle 50 to be sequentially spread.
In some embodiments of the invention, the length of the scrap section is the same as the length of the new chain for each replacement. Each time a new chain is replaced, in correspondence with the length of the scrap section, so that the corresponding old chain is not stacked or pushed out of the head 21.
In some embodiments of the present invention, after all the old chains are replaced, the top chain and the bottom chain of the new chain at the head 21 are connected by using the chain connecting ring, the tension is measured by using the chain measuring device, the conveyor 20 is started to run without load for 2-3 cycles, the tension is tested again, and the normal production is resumed after the tension requirement is met.
In some embodiments of the invention, the step of disconnecting the old chain of conveyor 20 from head 21 is preceded by:
stopping cutting coal when the chain wheel of the machine head 21 is pushed to the mining stopping line;
completely emptying the coal in the top chain and the bottom groove of the conveyor 20, and stopping the conveyor 20 after the chain connecting ring is rotated to the position of the machine head 21;
the working face support side protection plate and the telescopic beam are all punched out;
and closing the liquid inlet stop valve of the bracket in the operation area, locking the bracket in the operation area, and powering off, locking and locking the conveyor 20, the reversed loader and the crusher.
Example 1:
the embodiment discloses a method for replacing a chain of a fully mechanized mining face conveyor 20, which comprises the following steps as shown in fig. 1:
s1: placing the conveyor 20 in the gateway 10;
s2: arranging a winch 30 in the gateway 10;
s3: disconnecting the old chain of the conveyor 20 from the head 21 and breaking the old chain into a top chain and a bottom chain;
s4: dragging the waste section of the top chain to be replaced out of the gate way 10;
s5: connecting the top chain by using a winch 30 in a traction manner;
s6: connecting one end of the new chain to the bottom chain of the conveyor 20;
s7: starting the transporter 20 and the winch 30 to drag a new chain and replace at least part of the bottom chain;
s8: the above steps are cycled until all of the old chains of conveyor 20 have been replaced.
As shown in fig. 2, a main and auxiliary transport gateway 11, a transport gateway 12, and a standby and auxiliary transport gateway 13, which are parallel to each other, and a gateway 10 communicating the main and auxiliary transport gateway 11, the transport gateway 12, and the standby and auxiliary transport gateway 13 are sequentially provided from top to bottom.
In step S1, before the chain is replaced, it is determined in advance that the machine head 21 is located in the gateway 10 while ensuring the straightness of the conveyor 20 and the smoothness of the fully mechanized mining face to the maximum, and the production is stopped when the sprocket of the machine head 21 is pushed to the center line position of the gateway 10.
In addition, the height of the roadway with 10 openings of the crossheading roadway is measured in advance, and the requirement of the special vehicle 50 on the minimum height required for replacing the chain is met. Wherein the model number of the special vehicle 50 is ED25 special vehicle 50.
In this embodiment, a crane is used to load a new chain to be replaced into the bucket 40 every 50 meters, the new chain is firmly bound with the bucket 40 by using a double strand 8# iron wire, the bucket 40 loaded with the new chain is placed to the side of the standby auxiliary transportation gateway 13 close to the head side by about 20 meters away from the gateway 10, and the opening direction of the bucket 40 faces the direction of the machine head 21.
In step S2, the winch 30 is installed at the intersection of the gateway 10 and the transportation gateway 12 and at a position 1.5 m close to the corner of the gateway 10, and fixed by 10 single hydraulic props, wherein the left and right sides are fixed by 3 DW38-300/120 single hydraulic props, the front and rear sides are fixed by 2 DW42-200/100 single hydraulic props, the 2 single hydraulic props at the side of the transporter 20 adopt prop-prop type driving, the angle between the single hydraulic props and the roadway floor is about 70 °, and the fall-proof rope is hung on the single hydraulic props.
Between the step S2 and the step S3, the chain wheel of the machine head 21 is pushed to a mining stopping line to stop coal cutting, the top chain and the coal in the bottom groove of the conveyor 20 are all pulled to be empty, the chain connecting ring is turned to the position of the machine head 21 and then the machine is stopped, the side protecting plate and the telescopic beam of the working face support are all driven out, so that the initial supporting force meets the requirement, the support liquid inlet stop valve in the working area is closed, and the support in the working area is locked.
The operator stops the power supply of the conveyor 20, the reversed loader and the crusher, locks the conveyor, hangs a warning board for people to operate and forbid closing the breaker, and can allow the operator to enter the field operation area after checking the safety of the field operation area.
The operator removes the coal baffle plate of the reversed loader at the machine head 21, places the reversed loader at a position which does not influence the in and out of the chain, and hangs the pipeline at the machine head 21 at a position which does not influence the operation area.
The operator inserts the chain stopper into the hole of the chain stopper of the head 21 and withdraws the person in the conveyor 20. The operator presses the motor of the head 21, the safety pin is inserted after the motor is pressed in place, then the tail 22 of the tensioning oil cylinder is contracted, and the liquid inlet stop valve of the tensioning oil cylinder is closed after the oil cylinder is completely withdrawn.
In step S3, the operator checks the motor system reliability of the head 21 and confirms that the chain is loosened by reversing the motor without error until the chain link can be removed. After the chain link at the head 21 is removed, the personnel and tools in the conveyor 20 are removed, and the operator operates the motor to rotate the broken scraper chain out of the sprocket. The operator unlocks the motor and takes the chain stopper out of the chute when the motor is completely disengaged and the safety pin is installed.
The operator pulls out the cable plug of the motor of the reversed loader from the load side of the combined switch of the transporter 20, the reversed loader and the crusher, sets 'corresponding circuit starting forbidding' on the switch, then adjusts the rotating speed of the motor of the transporter 20 to 300 r/min from the programmable control box, and sets the motor of the nose 21 to 'operation forbidding'.
The operator drags the top chain disconnected from the machine head 21 to the machine tail 22 for about 50m by using the chain block, and removes the chain connecting ring of the top chain.
An operator connects one end of a rope head of a 20m phi 32mm steel wire rope with the ED25 special vehicle 50, and the other end of the rope head is connected with a top chain disconnected at the machine head 21 through a 40T chain. A driver of an ED25 special vehicle 50 is guided by an interphone to pull a top chain of 50m which is disconnected outside the gateway 10, and the top chain is sequentially spread out, and the steel wire rope is removed after the top chain is in place.
In step S4, the wire rope head of the winch 30 is connected to the top chain disconnected at a position 50m inside the transporter 20 with a 40T chain.
In step S5, the operator firmly welds the machined chain guide groove to the head 21, pulls out a new chain in the chain bucket 40 by using the chain block, places the new chain in the chain guide groove, connects the chain connecting ring to the bottom chain disconnected from the head 21, and attaches the tension pin in place.
In step S6, the operator starts the transporter 20, issues a start command with the interphone after hearing the last warning of the start of the transporter 20, the driver of the winch 30 receives the command and starts the winch 30 to pull at the same time, the operator observes the remaining condition of the chain in the chain bucket 40, and when one scraper remains in the chain bucket 40, the operator issues a stop command with the interphone to stop the pulling of the winch 30 and the transporter 20.
After the step S6 is finished, the operator arranges the special vehicle 50 to transport the empty bucket 40 to a position where other buckets 40 do not affect the entrance of the other buckets 40, places the bucket 40 holding the chain of the new conveyor 20 at the installation position of the gate 10, and after the new bucket 40 is placed, the operator connects the bottom chain of the conveyor 20 with the new chain by using a chain connecting link.
In step S8, the above steps S1-S7 are repeated, one cycle for each 50m new chain replacement, until the chain replacement is completed. After the replacement is completed, the operator pulls out the new chain from the chain wheel of the machine head 21, and the top and bottom chains at the chain wheel of the machine head 21 are connected by using the chain connecting ring.
After step S7 is completed, the operator measures the tension using the tension cylinder of the tail 22 using the chain measuring device, restores the transfer conveyor coal deflector, and fastens the connecting bolt.
After no abnormity exists in the inspection operation site, cable plugs and related settings of the transfer conveyor of the combination switch are recovered, the settings of a programmable control box of a motor of the conveyor 20 are recovered, an operator supplies power to the conveyor 20, the transfer conveyor and the crusher, and the conveyor 20 is started singly for 2-3 cycles of no-load operation to check the operation condition.
And after confirming that the conveyor 20 normally operates, the operator stops the conveyor 20, locks the conveyor, tests the tension force again, and confirms that the normal production is recovered without releasing the lock by mistake.
What has been described above is merely the principles and preferred embodiments of the present application. It should be noted that, for a person skilled in the art, several other modifications can be made on the basis of the principle of the present application, and these should also be considered as the scope of protection of the present application.
Claims (10)
1. A method for replacing a fully mechanized mining face conveyor chain is characterized by comprising the following steps:
arranging a conveyor (20) in the gateway (10);
installing a winch (30) in the gateway (10);
disconnecting the old chain of the conveyor (20) from the head (21) such that the old chain is broken into a top chain and a bottom chain;
dragging the waste section of the top chain to be replaced out of the gate way (10);
connecting the top chain by using a winch (30) in a traction way;
connecting one end of a new chain to the bottom chain of the conveyor (20);
starting a transporter (20) and a winch (30) to drag the new chain and replace at least part of the bottom chain;
and circulating the steps until all the old chains of the conveyor (20) are replaced.
2. The method for replacing a fully mechanized mining face conveyor chain according to claim 1, characterized in that a plurality of lengths of the new chain are loaded into a bucket (40) and the bucket (40) is placed on a side of the spare auxiliary gateway (13) near the highwall, the bucket (40) opening direction facing the head (21).
3. The method of replacing a fully mechanized mining face conveyor chain of claim 1, wherein the winch (30) is secured by a plurality of sets of hydraulic props.
4. A method of changing a fully mechanized mining face conveyor chain according to claim 3, characterized in that the hydraulic prop near the side of the conveyor (20) is mounted in a prop.
5. Method for replacing a fully mechanized mining face conveyor chain according to claim 1, characterized in that the step of disconnecting the old chain of the conveyor (20) from the head (21) comprises in particular:
inserting the chain stopper into a chain stopper hole of the machine head (21), pressing a motor of the machine head (21), and installing a safety pin after the motor is pressed in place;
a tensioning oil cylinder of the contraction tail (22), and a liquid inlet stop valve of the tensioning oil cylinder is closed after the tensioning oil cylinder is completely retracted;
reversing the motor to loosen the old chain to a state that the chain ring can be removed, removing the chain ring at the machine head (21), and operating the motor to rotate the bottom chain out of the chain wheel;
the motor is unlocked, a safety pin is installed after the motor is completely disengaged from the old chain, and the chain stopper is removed.
6. The method of claim 1, wherein the step of connecting an end of a new chain to the bottom chain of the conveyor (20) comprises:
and a fixed chain guide groove is arranged on the machine head (21), the new chain is pulled out and arranged in the chain guide groove, the new chain is connected with the bottom chain by using a chain connecting ring, and an expansion pin is arranged.
7. The method for replacing the fully mechanized mining face conveyor chain according to claim 1, wherein the step of dragging the waste section of the top chain to be replaced out of the gateway (10) comprises:
an operator drags the top chain from the position where the head (21) is disconnected to the tail (22) direction to form the waste section;
and drawing the waste sections to the outside of the gate-crossing roadway (10) through a special vehicle (50) to be sequentially spread.
8. The method of replacing a fully mechanized mining face conveyor chain of claim 7, wherein the length of the scrap section is the same as the length of the new chain for each replacement.
9. The method for replacing a fully mechanized mining face conveyor chain according to claim 1, wherein after all the old chains are replaced, the new chain is connected to the top chain and the bottom chain at a machine head (21) by using a connecting link;
and measuring the tension by using a chain measuring device, starting the conveyer (20) to run without load for 2-3 cycles without errors, testing the tension again, and recovering normal production after meeting the requirement of the tension.
10. The method of replacing a fully mechanized mining face conveyor chain of claim 1, wherein the step of disconnecting the old chain of the conveyor (20) from a head (21) further comprises, prior to:
stopping coal cutting when a chain wheel of the machine head (21) is pushed to a mining stopping line;
completely emptying the coal in the top chain and the bottom groove of the conveyor (20), and stopping the conveyor after a chain connecting ring of the conveyor (20) is rotated to a machine head (21) position;
the working face support side protection plate and the telescopic beam are all punched out;
and closing the liquid inlet stop valve of the bracket in the operation area, locking the bracket in the operation area, and powering off, locking and locking the conveyor (20), the reversed loader and the crusher.
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| CN202110125449.0A CN112875158A (en) | 2021-01-29 | 2021-01-29 | Method for replacing fully mechanized coal mining face conveyor chain |
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| CN202110125449.0A CN112875158A (en) | 2021-01-29 | 2021-01-29 | Method for replacing fully mechanized coal mining face conveyor chain |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114313807A (en) * | 2022-02-25 | 2022-04-12 | 淮南矿业(集团)有限责任公司 | Method for integrally and quickly recovering chain scraper of fully mechanized mining face conveyor of coal mine |
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| CN208057158U (en) * | 2018-04-13 | 2018-11-06 | 陕煤集团神南产业发展有限公司 | A kind of device being laid with for fully-mechanized mining equipment bottom chain |
| CN108974772A (en) * | 2018-06-26 | 2018-12-11 | 山西天地王坡煤业有限公司 | A kind of method of the main tunnel rubber belt conveyor replacement adhesive tape in underground |
| CN111252474A (en) * | 2020-03-27 | 2020-06-09 | 陕西朗浩传动技术有限公司 | Electro-hydraulic control chain tightening device and method for scraper conveyor |
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| CN103738477A (en) * | 2014-01-26 | 2014-04-23 | 中国海洋石油总公司 | Method for replacing upper anchor cable of mooring anchor legs |
| CN104329117A (en) * | 2014-08-28 | 2015-02-04 | 江苏中矿立兴能源科技有限公司 | Installation method of comprehensive mechanized filling, coal mining and open-off cutting equipment |
| CN105730988A (en) * | 2016-04-14 | 2016-07-06 | 长安益阳发电有限公司 | Online replacement method for scraper chain of submerged chain conveyor |
| US20180251308A1 (en) * | 2017-03-06 | 2018-09-06 | Joy Mm Delaware, Inc. | Chain conveyor with cast sections |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114313807A (en) * | 2022-02-25 | 2022-04-12 | 淮南矿业(集团)有限责任公司 | Method for integrally and quickly recovering chain scraper of fully mechanized mining face conveyor of coal mine |
| CN114313807B (en) * | 2022-02-25 | 2024-02-23 | 淮南矿业(集团)有限责任公司 | Integral quick recovery method for chain scraper of fully mechanized coal mining face conveyor |
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