CN110821546B - Equipment and process method for preventing spontaneous combustion of goaf by accurately injecting inert gas - Google Patents
Equipment and process method for preventing spontaneous combustion of goaf by accurately injecting inert gas Download PDFInfo
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- CN110821546B CN110821546B CN201911008911.8A CN201911008911A CN110821546B CN 110821546 B CN110821546 B CN 110821546B CN 201911008911 A CN201911008911 A CN 201911008911A CN 110821546 B CN110821546 B CN 110821546B
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- 238000000034 method Methods 0.000 title claims abstract description 96
- 230000008569 process Effects 0.000 title claims abstract description 62
- 239000011261 inert gas Substances 0.000 title claims description 26
- 238000002485 combustion reaction Methods 0.000 title abstract description 7
- 230000002269 spontaneous effect Effects 0.000 title abstract description 7
- 238000002347 injection Methods 0.000 claims abstract description 245
- 239000007924 injection Substances 0.000 claims abstract description 245
- 230000005540 biological transmission Effects 0.000 claims abstract description 179
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000009467 reduction Effects 0.000 claims description 58
- 230000033001 locomotion Effects 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000012806 monitoring device Methods 0.000 claims description 7
- 239000002390 adhesive tape Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 14
- 239000003245 coal Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 8
- 238000005065 mining Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/006—Equipment transport systems
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses equipment and a process method for accurately injecting inertness to prevent spontaneous combustion of a goaf, and relates to the technical field of goaf inertness injection fire prevention and extinguishment. The method comprises the following steps: the device comprises a traction moving device, an automatic resetting device and an idler injection pipe; a base of the traction moving device is provided with a travelling mechanism and a first speed reducing motor, and a first transmission sleeve is connected to a shaft of the first speed reducing motor; the automatic reset device comprises a base, a second speed reducing motor is arranged on the base, a second transmission sleeve is connected to the shaft of the second speed reducing motor, a first transmission thread is arranged on the inner wall of the second transmission sleeve, and a working mode switching assembly which enables the automatic reset device to be fixed and capable of walking is further arranged on the base; the second transmission thread section is arranged on the idle injection pipe, the air inlet end of the idle injection pipe is fixedly connected into the first transmission sleeve, and the idle injection end of the idle injection pipe penetrates through the second transmission sleeve and is in transmission connection with the first transmission thread section in a matched mode through the second transmission thread section. The phenomenon that the injection inerting pipeline is broken in the process of injecting inerting can be avoided to a certain extent.
Description
Technical Field
The invention relates to the technical field of goaf inert injection fire prevention and extinguishing, in particular to goaf inert injection equipment and a goaf inert injection fire prevention and extinguishing method.
Background
With the rapid development of coal mining methods and coal mining equipment in recent years, the coal yield is greatly increased, the rapid development of economy is promoted, the amount of residual coal in a goaf is increased, the probability of fire in the goaf is greatly improved, spontaneous combustion accidents of the coal in the goaf are frequent, coal mine fire is caused, gas explosion accidents can be caused under severe conditions, and the prevention and the control of the fire in the goaf become problems to be solved urgently.
At present, the common technology for controlling natural ignition in mine goafs is an inertia injection fire prevention and extinguishing technology, wherein the precise inertia injection technology is gradually popularized and applied in practical production work due to the advantages of self inertia injection pipeline recycling, precision of inertia injection points and the like in several inertia injection implementation modes. However, the requirement of the precise inert injection equipment at the present stage on the geological condition of the implementation mine is high, and the inert injection pipeline is generally pulled hard by hard dragging in the forward propelling process along with the coal mining working face in the inert injection implementation process and is often pulled apart.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a goaf inerting injection device and method, which can avoid the phenomenon that an inerting injection pipeline is broken in an inerting injection process to a certain extent, so as to improve the reliability of the device.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a goaf inert injection device, including: the device comprises a traction moving device, an automatic resetting device and an idler injection pipe;
the traction moving device comprises a base, a travelling mechanism and a first speed reducing motor are arranged on the base, and a first transmission sleeve is connected to a shaft of the first speed reducing motor;
the automatic resetting device comprises a base, a second speed reducing motor is arranged on the base, a second transmission sleeve is connected to the shaft of the second speed reducing motor, first transmission threads are arranged on the inner wall of the second transmission sleeve, and a working mode switching assembly enabling the automatic resetting device to be fixed and capable of walking is further arranged on the base;
the idle injection pipe is provided with a second transmission thread section, the air inlet end of the idle injection pipe is fixedly connected into the first transmission sleeve, and the idle injection end of the idle injection pipe penetrates through the second transmission sleeve and is in matched transmission connection with the first transmission thread section through the second transmission thread section.
Optionally, guide cylinders are symmetrically arranged on the machine base and located on two sides of the second speed reduction motor, a parking column penetrates through the guide cylinders, and a limiting part for preventing the parking column from being pulled out of the guide cylinders is arranged at the lower end of the parking column;
the working mode switching assembly comprises a first hydraulic or pneumatic lifting assembly, the first hydraulic or pneumatic lifting assembly comprises a cylinder barrel and a jacking piston rod capable of moving up and down relative to the cylinder barrel, a travelling wheel is arranged at the lower end of the cylinder barrel, and the upper end of the jacking piston rod is fixedly connected with the parking column through a first connecting piece;
when the first hydraulic or pneumatic lifting component is not lifted, the lower end of the parking column is grounded, the travelling wheels are lifted off the ground, and the automatic resetting device is in a fixed mode;
under the lifting state of the first hydraulic or pneumatic lifting assembly, the jacking piston rod rises relative to the cylinder barrel to drive the parking column to rise, the lower end of the parking column is lifted off, the travelling wheels are grounded, and the automatic resetting device is in a walking mode.
Optionally, the second transmission sleeve is of a stepped cylindrical structure and comprises a first stepped cylinder section and a second stepped cylinder section, the diameter of the first stepped cylinder section is smaller than that of the second stepped cylinder section, a sleeve seat is arranged below the machine base, and the second transmission sleeve is rotatably arranged in the sleeve seat through the first stepped cylinder section;
the second stepped cylinder section is positioned outside the end part of the sleeve seat, a first gear is mounted on the periphery of the second stepped cylinder section, a second gear is connected to the shaft of the second speed reducing motor, and the second gear is meshed with the first gear; alternatively, the first and second electrodes may be,
the second step section of thick bamboo is located outside the cover cylinder seat tip, installs first sprocket on the second step section of thick bamboo periphery, be connected with the second sprocket on the second gear motor shaft, the second sprocket with first sprocket passes through chain drive and is connected.
Optionally, two groups of vertical guide rails are arranged on the base and located on two sides of the first speed reduction motor, each group of vertical guide rails at least comprises two vertical guide rails arranged at intervals, a vertical plate is arranged in each group of vertical guide rails in a sliding manner, the vertical plate is in a T-shaped structure, the shoulder of the vertical plate is pressed at the upper end of each guide rail, and the first speed reduction motor is connected to the two groups of vertical plates and located in a space defined by the two groups of vertical guide rails and the two groups of vertical plates;
and the base is provided with second hydraulic or pneumatic lifting components corresponding to four corners of the first speed reduction motor and positioned on the outer side of the vertical guide rail, each second hydraulic or pneumatic lifting component comprises a cylinder barrel and a jacking piston rod capable of moving up and down relative to the cylinder barrel, the lower end of the cylinder barrel is connected to the base, and the upper end of the jacking piston rod is connected with the shoulder of the vertical plate.
Optionally, the upper end of the jacking piston rod is hinged to the shoulder of the vertical plate.
Optionally, the traveling direction of the traveling mechanism is consistent with the axial direction of the idle pipe, the traveling mechanism comprises a front wheel and a rear wheel, the front end of the base is provided with a protruding front fork, the rear end of the base is provided with a protruding rear fork, rotating shafts are respectively arranged in the front fork and the rear fork, the front wheel is obliquely arranged inwards at two ends of the rotating shaft of the front fork, the rear wheel is obliquely arranged inwards at two ends of the rotating shaft of the rear fork, and the front wheel and the rear wheel are respectively arranged in a shape of Chinese character 'jia'.
Optionally, the inclination angles of the front wheel and the rear wheel to the vertical plane are respectively 5-10 °.
Optionally, a torque monitoring device for monitoring the output torque of the first speed reduction motor is arranged on the idler injection pipe.
In a second aspect, an inertia injecting method for a gob according to an embodiment of the present invention is implemented based on any one of the inertia injecting apparatuses in the first aspect, and includes the steps of:
arranging the idle injection equipment on the pushing side of the stope face in the adhesive tape crossheading, wherein an idle injection port of an idle injection pipe of the idle injection equipment extends into a goaf formed behind the stope face, the idle injection port of the idle injection pipe is arranged at a preset distance from the stope face, and an air inlet of the idle injection pipe is connected to an inert gas source and used for injecting inert gas into the goaf in the stope process;
fixing an automatic resetting device of the inert injection equipment through the working mode switching assembly; a second transmission sleeve of the automatic resetting device is positioned at one end, close to the traction moving device, of a second transmission thread section of the idler injection pipe;
starting a first speed reducing motor of a traction moving device along with the forward propulsion of a stope face to drive a first transmission sleeve connected with a shaft of the first speed reducing motor to rotate, and converting the rotation motion of an idle injection pipe fixedly connected to the first transmission sleeve into linear motion which is axially opposite to a second transmission sleeve of the traction moving device and faces the traction moving device through a second transmission thread section;
when the idler injection pipe moves to the second transmission sleeve of the automatic resetting device along the axial direction and is positioned at one end, far away from the traction moving device, of the second transmission thread section of the idler injection pipe, the first speed reduction motor is closed;
the automatic resetting device is switched to a walking working mode through the working mode switching assembly, a second speed reducing motor is started to drive a second transmission sleeve to be in matched transmission with the second transmission thread through the first transmission thread, the second transmission sleeve is reset at one end, close to the traction moving device, of a second transmission thread section of the idle injection pipe, and resetting of the automatic resetting device is achieved; during the resetting process, the injection idler pipe is pressed into the goaf and is fixed relative to the automatic resetting device;
and (4) repeating the steps in the stoping process to draw the inerting injection pipe to move until the inerting injection of the goaf formed in the stoping process is completed.
Optionally, the step of repeatedly drawing the inerting injection pipe to move in the stoping process until the inerting injection of the goaf formed in the stoping process is completed includes: when the working face is pushed to a position 10-20 m away from the stoping line, the step of dragging the idle injection pipe to move is not carried out, and the idle injection pipe is buried in the goaf, so that the natural ignition of the goaf in the area near the stoping line after sealing is prevented and controlled.
Optionally, before activating the first reduction motor of the traction movement device, the method further comprises: and the jacking piston rod of the second hydraulic or pneumatic lifting assembly moves up and down relative to the cylinder barrel to drive the vertical plate and the first speed reducing motor on the vertical plate to move up and down along the vertical guide rail, and the height of the first speed reducing motor is adjusted so that the torque output by the first speed reducing motor is concentric with the idle injection pipe.
Optionally, the method further comprises: when the road surface is uneven in the traction process of the idler injection pipe, the jacking piston rod of the second hydraulic or pneumatic lifting assembly at the corresponding position on the base moves up and down relative to the cylinder barrel to drive the vertical plate and the first speed reduction motor on the vertical plate to move up and down along the vertical guide rail, and the inclination angle of the first speed reduction motor is adjusted.
Optionally, after activating the first reduction motor of the traction movement device, the method further comprises: monitoring the output torque of the first speed reducing motor through a torque monitoring device;
when the monitored torque change exceeds a preset threshold value, the first speed reducing motor performs a preset positive and negative rotation cycle rotation period, and the time of each rotation period is 10-15 s;
and when the monitored torque change is recovered to be within the preset threshold range, controlling the first speed reducing motor to rotate in a single direction according to the preset rotating direction so as to draw the inerter injection pipe to move.
The goaf inert injection equipment and the goaf inert injection method provided by the embodiment of the invention comprise the following steps: the device comprises a traction moving device, an automatic resetting device and an idler injection pipe; the traction moving device comprises a base, a travelling mechanism and a first speed reducing motor are arranged on the base, and a first transmission sleeve is connected to a shaft of the first speed reducing motor; the automatic resetting device comprises a base, a second speed reducing motor is arranged on the base, a second transmission sleeve is connected to the shaft of the second speed reducing motor, first transmission threads are arranged on the inner wall of the second transmission sleeve, and a working mode switching assembly enabling the automatic resetting device to be fixed and capable of walking is further arranged on the base; the second transmission thread section is arranged on the idle injection pipe, the air inlet end of the idle injection pipe is fixedly connected into the first transmission sleeve, and the idle injection end of the idle injection pipe penetrates through the second transmission sleeve and is in matched transmission with the first transmission thread section through the second transmission thread section; fixing an automatic resetting device of the inert injection equipment through the working mode switching assembly; a second transmission sleeve of the automatic resetting device is positioned at one end, close to the traction moving device, of a second transmission thread section of the idler injection pipe; starting a first speed reducing motor of a traction moving device along with the forward propulsion of a stope face to drive a first transmission sleeve connected with a shaft of the first speed reducing motor to rotate, and converting the rotation motion of an idle injection pipe fixedly connected to the first transmission sleeve into linear motion which is axially opposite to a second transmission sleeve of the traction moving device and faces the traction moving device through a second transmission thread section; when the idler injection pipe moves to the second transmission sleeve of the automatic resetting device along the axial direction and is positioned at one end, far away from the traction moving device, of the second transmission thread section of the idler injection pipe, the first speed reduction motor is closed; the automatic resetting device is switched to a walking working mode through the working mode switching assembly, a second speed reducing motor is started to drive a second transmission sleeve to be in matched transmission with the second transmission thread through the first transmission thread, the second transmission sleeve is reset at one end, close to the traction moving device, of a second transmission thread section of the idle injection pipe, and resetting of the automatic resetting device is achieved; during the resetting process, the injection idler pipe is pressed into the goaf and is fixed relative to the automatic resetting device; and the steps are repeated in a circulating manner, so that the inerting injection pipeline can be dragged and moved in the inerting injection process. According to the equipment provided by the embodiment, in the process of dragging and moving the injection idler pipe, the rotation of the first speed reducing motor is transmitted to the injection idler pipe through the matching of the dragging and moving device and the automatic resetting device, and then the second transmission thread section on the injection idler pipe is in matched transmission with the first thread section of the second transmission sleeve in the automatic resetting device, so that the injection idler pipe linearly moves towards the dragging and moving device, the injection idler pipe moves forwards along with the stope face, the phenomenon that the injection idler pipe is broken in the process of injecting the idler pipe is avoided to a certain extent, and the reliability of the equipment is improved; further, smooth development and implementation of the inert injection process can be guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic plan view of a goaf inerting injection device in a stoping work area according to an embodiment of the present invention;
FIG. 2 is a front view of one embodiment of the towing mobile device of FIG. 1;
FIG. 3 is a left side view of one embodiment of the towing mobile device of FIG. 1;
FIG. 4 is a front view of one embodiment of the automatic reset device of FIG. 1;
FIG. 5 is a right side view of one embodiment of the automatic reset device of FIG. 1;
FIG. 6 is a top view of an embodiment of the automatic reset device of FIG. 1;
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
To assist in understanding the technical solution of the present application, a brief description will now be made of the layout of the coal mining work area: the coal mining working area is also called a stoping working area and comprises a stoping working surface (also called a coal mining working surface), a track crossheading (also called an upper crossheading) and a rubber belt crossheading (also called a lower crossheading), wherein the rubber belt crossheading is mainly used for arranging transportation equipment and the like.
FIG. 1 is a schematic plan view of a goaf inerting injection device in a stoping work area according to an embodiment of the present invention; it should be noted that, in order to clearly show the structure of the idle injection device of the present application, fig. 1 is a schematic plan layout view of the goaf idle injection device in the stoping working area, which is drawn by taking a vertical plane of the adhesive tape gateway as a view direction, wherein the idle injection device is arranged in the adhesive tape gateway, and an idle injection port of the idle injection pipe faces the goaf behind the stoping working surface.
Referring to fig. 1, the goaf inert gas injection device provided by the embodiment of the invention is suitable for goaf fire prevention and extinguishing engineering of coal mines, mines and the like, and facilitates development and implementation of a process for preventing spontaneous combustion of the goaf by injecting inert gas.
Said inerting device comprises: the method comprises the following steps: the device comprises a traction moving device 10, an automatic resetting device 20 and an idler filling pipe 30.
As shown in fig. 2 to fig. 6, the traction moving device 10 includes a base 100, a traveling mechanism 101 and a first speed reduction motor 102 are disposed on the base 100, and a first transmission sleeve 103 is connected to a shaft of the first speed reduction motor 102.
The idle injection pipe 30 is used for injecting an inert gas into a goaf in a stoping process, a second transmission thread section (a part matched with a second transmission sleeve in fig. 1, and the details cannot be shown in the drawing) is arranged on the idle injection pipe 30, an air inlet end of the idle injection pipe 30 is fixedly connected into the first transmission sleeve 103, and an idle injection end of the idle injection pipe 30 penetrates through the second transmission sleeve 203 and is in transmission connection with the first transmission thread section through matching of the second transmission thread section.
Wherein the rotating speed of the inert injection pipe 30 is 10-20 r/min; first transmission screw thread and second transmission screw thread are double thread, can increase transmission efficiency, and the pitch is 8 ~ 12mm, and the frictional force that forms similar to lead screw and nut spiral closure is less, the transmission strength is big, does not have too big power's loss basically, and the comparison is used for transmitting power and motion, and the transmission is stable firm to the reliability of the moment of torsion continuation transmission that second gear motor 202 transmitted second transmission sleeve 203 has been guaranteed.
It is understood that the first reduction motor 102 and the second reduction motor 202 have a braking function; in this embodiment, the traction moving device 10 and the automatic resetting device 20 further include motor control devices for controlling the start, stop, and/or forward and reverse rotation of the first reduction motor 102 and the second reduction motor 202, respectively, and are mainly used for controlling the traction moving device 10 and the automatic resetting device 20 to cooperate with each other to realize that the injection idler pipe 30 moves adaptively along with the advance of the stope working face in the process of injecting the idler, and the motor control devices may be integrated in the traction moving device or may be additionally arranged; the working process of the idle injecting device for realizing the traction of the idle injecting pipe 30 to move in the coal mining process is as follows:
fixing the automatic resetting device 20 relative to the ground through the working mode switching assembly, wherein a second transmission sleeve 203 of the automatic resetting device 20 is positioned at one end, close to the traction moving device 10, of a second transmission thread section of the idler injection pipe 30;
as the stope face is pushed forward, the first speed reduction motor 102 of the traction moving device 10 is started to drive the first transmission sleeve 103 connected with the shaft of the first speed reduction motor 102 to rotate, and the idle injection pipe 30 fixedly connected to the first transmission sleeve 103 converts the rotation motion of the idle injection pipe into linear motion which is axially opposite to the second transmission sleeve 203 of the traction moving device 10 and faces the traction moving device 10 through the second transmission thread section;
when the idler injection pipe 30 moves axially to the end, away from the traction moving device 10, of the second transmission sleeve 203 of the automatic resetting device 20, of the second transmission thread section of the idler injection pipe 30, the movement of the idler injection pipe 30 at one time is realized, and the first speed reduction motor 102 is turned off through the motor control device; when the automatic resetting device 20 is fixed, the second speed reducing motor 202 does not work, and due to the braking function of the first speed reducing motor 102, the second transmission sleeve 203 is locked, so that the automatic resetting device 20 is integrally fixed relative to the ground, which is equivalent to providing a supporting and guiding function for the second transmission thread section of the idle injection pipe 30, and is similar to a guide rail.
The automatic resetting device 20 is switched to a walking working mode through the working mode switching assembly, the second speed reducing motor 202 is started to drive the second transmission sleeve 203 to be in matched transmission with the second transmission thread through the first transmission thread, so that the second transmission sleeve 203 is reset at one end, close to the traction moving device 10, of the second transmission thread section of the idle injection pipe 30, and the resetting of the automatic resetting device 20 is realized; during the resetting process, the idle injection pipe 30 is pressed into the goaf and fixed relative to the automatic resetting device 20, the idle injection pipe 30 is fixed, and the automatic resetting device 20 moves on a second transmission thread section of the idle injection pipe 30;
and repeating the steps in the stoping process to realize the traction of the inerting injection pipe 30 to move until the inerting injection of the goaf formed in the stoping process is completed.
The goaf inert injection equipment provided by the embodiment of the invention comprises: the device comprises a traction moving device 10, an automatic resetting device 20 and an idler injection pipe 30; the traction moving device 10 comprises a base 100, wherein a traveling mechanism 101 and a first speed reduction motor 102 are arranged on the base 100, and a first transmission sleeve 103 is connected to a shaft of the first speed reduction motor 102; the automatic reset device 20 comprises a base 201, a second speed reduction motor 202 is arranged on the base 201, a second transmission sleeve 203 is connected to the shaft of the second speed reduction motor 202, a first transmission thread is arranged on the inner wall of the second transmission sleeve 203, and a working mode switching component which enables the automatic reset device 20 to be fixed and capable of walking is further arranged on the base 201; a second transmission thread section is arranged on the idler injection pipe 30, an air inlet end of the idler injection pipe 30 is fixedly connected into the first transmission sleeve 103, and an idler injection end of the idler injection pipe 30 penetrates through the second transmission sleeve 203 to be in matched transmission with the first transmission thread section through the second transmission thread section; fixing the automatic resetting device 20 of the inerting injection equipment through the working mode switching assembly; the second transmission sleeve 203 of the automatic resetting device 20 is positioned at one end of the second transmission thread section of the idle injection pipe 30 close to the traction moving device 10; as the stope face is pushed forward, the first speed reduction motor 102 of the traction moving device 10 is started to drive the first transmission sleeve 103 connected with the shaft of the first speed reduction motor 102 to rotate, and the idle injection pipe 30 fixedly connected to the first transmission sleeve 103 converts the rotation motion of the idle injection pipe into linear motion which is axially opposite to the second transmission sleeve 203 of the traction moving device 10 and faces the traction moving device 10 through the second transmission thread section; when the idler injection pipe 30 moves axially to the end, away from the traction moving device 10, of the second transmission sleeve 203 of the automatic resetting device 20, of the second transmission thread section of the idler injection pipe 30, the first speed reduction motor 102 is turned off; the automatic resetting device 20 is switched to a walking working mode through the working mode switching assembly, the second speed reducing motor 202 is started to drive the second transmission sleeve 203 to be in matched transmission with the second transmission thread through the first transmission thread, so that the second transmission sleeve 203 is reset at one end, close to the traction moving device 10, of the second transmission thread section of the idle injection pipe 30, and the resetting of the automatic resetting device 20 is realized; wherein, in the resetting process, the idle injection pipe 30 is pressed into the goaf and fixed relative to the automatic resetting device 20; and the steps are repeated in a circulating manner, so that the 30-way traction movement of the inerting injection pipe can be realized in the inerting injection process. Through the equipment provided by the embodiment, in the process of towing and moving the injection idler pipe 30, the rotation of the first speed reduction motor 102 is transmitted to the injection idler pipe 30 through the cooperation of the towing and moving device 10 and the automatic resetting device 20, then the second transmission thread section on the injection idler pipe 30 is in cooperative transmission with the first thread section of the second transmission sleeve 203 in the automatic resetting device 20, so that the injection idler pipe 30 linearly moves towards the direction of the towing and moving device 10, the injection idler pipe 30 moves along with the stope face forwards in the process, the phenomenon that the injection idler pipe 30 is broken in the process of injecting the idler pipe to a certain extent is avoided, and the reliability of the equipment is improved.
Further, the dragging movement of the idler injection pipe 30 in the idler injection process can be realized through the idler injection device, so that the automation of the idler injection process is convenient to realize, and the manual operation intensity can be reduced.
In addition, the inerting injection device further comprises a goaf beam tube monitoring system and an inerting injection control system (not shown in the figure), wherein the goaf beam tube monitoring system is used for monitoring the variation of goaf index gases, and the index gases comprise gases such as CO, C2H6, CH4, C2H4, 2H2 and Δ 02(Δ 02 is oxygen consumption); the inerting injection control system is connected with the goaf beam tube monitoring system and comprises an inerting injection flow control valve, the inerting injection flow control valve is arranged on an inert gas source pipeline in front of an air inlet of the inerting injection tube 30, and the inerting injection control system controls the injection amount of inert gas according to the concentration of index gas collected by the goaf beam tube monitoring system in the goaf so as to realize real-time accurate matching of the inerting injection amount and the goaf spontaneous combustion conditions and realize accurate inerting injection.
In the process of injecting the inert gas, the inert gas injection port of the inert gas injection pipe 30 is always kept at a certain distance from the stope face, so that the accuracy of an inert gas injection point and the continuity of the distribution of the inert gas after the inert gas is injected into the goaf are realized, and the effectiveness of preventing and treating fire in the goaf is improved.
In one embodiment, referring to fig. 4 to 6, guide cylinders 204 are symmetrically disposed on the base 201 on both sides of the second reduction motor 202, a parking column 205 is disposed through the guide cylinders 204, and a limiting portion for preventing the parking column 205 from being pulled out of the guide cylinders 204 is disposed at a lower end of the parking column 205;
the working mode switching assembly comprises a first hydraulic or pneumatic lifting assembly 206, the first hydraulic or pneumatic lifting assembly comprises a cylinder 2061 and a lifting piston rod 2062 which can move up and down relative to the cylinder, a travelling wheel 207 is arranged at the lower end of the cylinder, and the upper end of the lifting piston rod is fixedly connected with the parking column 205 through a first connecting piece 208;
when the first hydraulic or pneumatic lifting component is not lifted, the lower end of the parking column 205 is grounded, the traveling wheels are lifted, and the automatic resetting device 20 is in a fixed mode;
in the lifting state of the first hydraulic or pneumatic lifting assembly, the lifting piston rod rises relative to the cylinder barrel to drive the parking column 205 to rise, the lower end of the parking column 205 is lifted off, the traveling wheels are grounded, and the automatic resetting device 20 is in a walking mode.
It can be understood that, in this embodiment, when the working mode switching assembly includes the first hydraulic lifting assembly, the first hydraulic lifting assembly further includes a hydraulic pipeline connected to the hydraulic cylinder to drive the jacking piston rod to move up and down relative to the cylinder. When the working mode switching assembly comprises a first pneumatic lifting assembly, the first pneumatic lifting assembly further comprises a pneumatic pipeline connected with an air source so as to drive the jacking piston rod to move up and down relative to the cylinder barrel.
Specifically, the second transmission sleeve 203 is of a stepped cylindrical structure and comprises a first stepped cylinder section and a second stepped cylinder section, the diameter of the first stepped cylinder section is smaller than that of the second stepped cylinder section, a sleeve seat is arranged below the base 201, and the second transmission sleeve 203 is rotatably arranged in the sleeve seat through the first stepped cylinder section; it can be understood that, in the state that the second speed reducing motor is not started, because the second transmission sleeve is connected with the second speed reducing motor, the second speed reducing motor is in the braking state in the stop state, so that the second transmission sleeve connected with the second speed reducing motor is also in the locking state.
The second stepped cylinder section is positioned outside the end part of the cylinder seat, a first gear 209 is arranged on the periphery of the second stepped cylinder section, a second gear 210 is connected to the shaft of the second speed reducing motor 202, and the second gear 210 is meshed with the first gear 209; the transmission of power is realized through gear meshing transmission, so that the transmission of the idler injection pipe 30 relative to the automatic resetting device 20 is more accurate and reliable.
In another optional embodiment, the second stepped cylinder section is located outside the end of the sleeve seat, a first sprocket is installed on the outer circumference of the second stepped cylinder section, a second sprocket is connected to the shaft of the second speed reducing motor 202, and the second sprocket is connected to the first sprocket through a chain transmission. Through adopting the chain drive mode to realize the transmission of power, can make the notes equipment of lazy of annotating of this embodiment be applicable to in the more adverse circumstances such as dust is big, low-speed heavy load.
Referring to fig. 2 and 3, in a traction moving device 10, during a process of traction and idle injection pipe 30 walking, when going up and down a slope or otherwise, a situation that a first transmission sleeve 103 connected to a first speed reduction motor 102 is not coaxial with the idle injection pipe 30 may occur, in order to ensure that a torque output by the first speed reduction motor 102 is concentric with the idle injection pipe 30, in some specific implementation structures of the traction moving device 10, two sets of vertical guide rails 104 are provided on the base 100 on both sides of the first speed reduction motor 102, each set of vertical guide rails 104 includes at least two spaced apart vertical plates 105, a vertical plate 105 is slidably provided in each set of vertical guide rails 104, specifically, the vertical plate 105 is provided in the guide rails 104 through guide blocks 106 at edges of the vertical plates, the vertical plate 105 has a "T" shape, a shoulder 1051 of the vertical plate 105 is pressed on the upper ends of the guide rails 104, and the first speed reduction motor 102 is connected to the two sets of vertical plates 105, And is positioned in the space enclosed by the two groups of vertical guide rails 104 and the two groups of vertical plates 105; the vertical plate 105 is in a T-shaped structure, and can be similar to the T-shaped structure; riser 105 can be any structure having a shoulder.
The base 100 is provided with second hydraulic or pneumatic lifting assemblies 107 corresponding to four corners of the first speed reduction motor 102 and located outside the vertical guide rail 104, each second hydraulic or pneumatic lifting assembly 107 comprises a cylinder 1071 and a lifting piston rod 1072 capable of moving up and down relative to the cylinder, the lower end of the cylinder 1071 is connected to the base 100, and the upper end of the lifting piston rod 1072 is connected to the shoulder 1051 of the vertical plate 105.
Therefore, the second hydraulic or pneumatic lifting assemblies at four corners of the first speed reducing motor 102 on the base 100 can lift up and down through the lifting piston rod in the cylinder to drive the vertical plate 105 and the first speed reducing motor 102 on the vertical plate 105 to move up and down in the vertical guide rail 104, so that the height of the first speed reducing motor 102 can be adjusted, the output torque of the first speed reducing motor 102 or the concentricity between the traction force and the idle injection pipe 30 is ensured, and the idle injection pipe 30 is prevented from being broken in the traction process and other accidents are prevented from influencing the normal idle injection construction.
Specifically, the upper ends of the jacking piston rods 1072 are respectively hinged to the shoulders 1051 of the vertical plates 105, and the hinge points are 1052. Therefore, when the vehicle runs up and down a slope or a rough road surface, the second hydraulic or pneumatic lifting component 107 arranged at a certain angle can independently lift or descend, and the shaft inclination angle alpha of the first speed reducing motor 102 can be adjusted, so that the output torque of the first speed reducing motor 102 is concentric with the idler injection pipe 30, and the risk that the idler injection pipe 30 is broken due to the fact that the traction force is not concentric in the traction process is avoided.
The traveling direction of the traveling mechanism 101 is the same as the axial direction of the idle pipe 30, the traveling mechanism 101 comprises a front wheel and a rear wheel, the front end of the base 100 is provided with a protruding front fork 1001, the rear end of the base 100 is provided with a protruding rear fork 1002, the front fork 1001 and the rear fork 1002 are respectively provided with a rotating shaft 1003, two ends of the rotating shaft of the front fork are provided with the front wheel in an inward inclining manner, two ends of the rotating shaft of the rear fork are provided with the rear wheel in an inward inclining manner, and the front wheel and the rear wheel are respectively arranged in a shape of Chinese character 'jia'. Preferably, the inclination angles beta of the front wheel and the rear wheel with the vertical plane are respectively 5-10 degrees. Through being preceding, rear wheel and interior splayed setting, can prevent to equip and move the skew about the in-process, guaranteed to annotate the stability of lazy equipment in annotating lazy in-process.
In addition, when the idle injection pipe 30 extends into the goaf, part of the idle injection pipe is pressed and stuck by gangue, particles and the like falling from the goaf by roof caving, in the prior art, hard pulling is still adopted to move the idle injection pipe 30 in the coal mining advancing direction, so that the idle injection pipe 30 is difficult to move backwards, and the idle injection pipe 30 is easy to break. When the inertia injection device provided by the embodiment is used for traction, if the first speed reduction motor 102 is difficult to unscrew during normal torque output, the first speed reduction motor 102 should be stopped from continuing to rotate so as to prevent the inertia injection pipe 30 from being twisted off. In order to avoid that the output torque of the first speed reduction motor 102 is too large during the towing process, the inertia charging pipe 30 is twisted off, and as an alternative embodiment, a torque monitoring device for monitoring the output torque of the first speed reduction motor 102 is arranged on the inertia charging pipe 30. When the torque variation of the output torque of the first reduction motor 102 exceeds a predetermined threshold, the predetermined threshold is, for example, 10% to 20%; the idle injection pipe 30 may be stuck in the goaf and cannot be moved out, at this time, the first speed reduction motor 102 is controlled by the motor control device to rotate forward and backward for a plurality of periods, the idle injection pipe 30 pressed into the goaf is loosened, traction recovery under the condition that the idle injection pipe 30 is stuck is realized, and then the idle injection pipe 30 is moved.
Example two
Based on the first equipment for injecting the inertness provided by the embodiment, the invention also provides a method for injecting the inertness in the goaf, which is implemented based on the first equipment for injecting the inertness provided by the embodiment and comprises the following steps:
arranging the idle injection equipment on the pushing side of the stope face in the adhesive tape crossheading, wherein an idle injection port of an idle injection pipe 30 of the idle injection equipment extends into a goaf formed behind the stope face, the idle injection port of the idle injection pipe 30 is arranged at a preset distance from the stope face, and an air inlet of the idle injection pipe 30 is connected to an inert gas source and is used for injecting inert gas into the goaf in the stope process;
fixing the automatic resetting device 20 of the inerting injection equipment through the working mode switching assembly; the second transmission sleeve 203 of the automatic resetting device 20 is positioned at one end of the second transmission thread section of the idle injection pipe 30 close to the traction moving device 10;
as the stope face is pushed forward, the first speed reduction motor 102 of the traction moving device 10 is started to drive the first transmission sleeve 103 connected with the shaft of the first speed reduction motor 102 to rotate, and the idle injection pipe 30 fixedly connected to the first transmission sleeve 103 converts the rotation motion of the idle injection pipe into linear motion which is axially opposite to the second transmission sleeve 203 of the traction moving device 10 and faces the traction moving device 10 through the second transmission thread section;
when the idler injection pipe 30 moves axially to the end, away from the traction moving device 10, of the second transmission sleeve 203 of the automatic resetting device 20, of the second transmission thread section of the idler injection pipe 30, the first speed reduction motor 102 is turned off;
the automatic resetting device 20 is switched to a walking working mode through the working mode switching assembly, the second speed reducing motor 202 is started to drive the second transmission sleeve 203 to be in matched transmission with the second transmission thread through the first transmission thread, so that the second transmission sleeve 203 is reset at one end, close to the traction moving device 10, of the second transmission thread section of the idle injection pipe 30, and the resetting of the automatic resetting device 20 is realized; wherein, in the resetting process, the idle injection pipe 30 is pressed into the goaf and fixed relative to the automatic resetting device 20;
and (4) repeating the steps to draw the inerting injection pipe 30 to move in the stoping process until the inerting injection of the goaf formed in the stoping process is completed.
According to the goaf inerting injection method provided by the embodiment of the invention, the inerting injection equipment is arranged in the adhesive tape crossheading according to the manner, the traction moving device 10 of the inerting injection equipment is matched with the automatic resetting device 20, the traction moving device 10 is matched with the automatic resetting device 20 to transmit the rotation of the first speed reduction motor 102 to the inerting injection pipe 30 in the traction moving process of the inerting injection pipe 30, and then the second transmission thread section on the inerting injection pipe 30 is matched with the first thread section of the second transmission sleeve 203 in the automatic resetting device 20 for transmission, so that the inerting injection pipe 30 linearly moves towards the direction of the traction moving device 10, the inerting injection pipe 30 moves forwards along with the stope face, the phenomenon that the path of the inerting injection pipe 30 is broken in the inerting injection process is avoided to a certain extent, and the smooth development and implementation of the inerting injection process are ensured.
The existing inert injection technology can only perform fire prevention and extinguishing of spontaneous combustion of coal in a goaf on a few mines with simpler geological conditions, cannot adapt to fire prevention and control in areas near a stoping line, is poor in applicability, needs to be reconfigured with other prevention and control technologies if fire prevention and extinguishing in the goaf near the stoping line are required, needs to invest a large amount of resources, and greatly improves production cost. In order to solve the technical problem, in this implementation, as an optional embodiment, the above steps are repeated in the stoping process to draw the inerting injection pipe 30 to move until the inerting injection of the goaf formed in the stoping process is completed includes: when the working face is pushed to a position 10-20 m away from the stoping line, the step of dragging the idle injection pipe 30 to move is not carried out, and the idle injection pipe 30 is buried in the goaf, so that the natural ignition of the goaf in the area near the stoping line after sealing is prevented and controlled. Therefore, the technical problem that the requirement on geological conditions is high due to movement of the idle injection pipe 30 can be solved, the method can be suitable for fire prevention and control in the area near the stoping line, and the applicability is good; moreover, fire prevention and extinguishing measures do not need to be rearranged, so that the capital investment for rearranging the fire prevention and extinguishing measures is greatly reduced.
When the base 100 of the traction moving device 10 is provided with second hydraulic or pneumatic lifting assemblies 107 corresponding to four corners of the first gear motor 102 and located outside the vertical guide rails, before the first gear motor 102 is started, the method further includes: the jacking piston rod 1072 of the second hydraulic or pneumatic lifting assembly 107 moves up and down relative to the cylinder barrel to drive the vertical plate 105 and the first speed reducing motor 102 on the vertical plate 105 to move up and down along the vertical guide rail 104, and the height of the first speed reducing motor 102 is adjusted to make the torque output by the first speed reducing motor 102 concentric with the idle injection pipe 30, so that the traction force output by the first speed reducing motor 102 is ensured to be concentric with the idle injection pipe 30, and the idle injection pipe 30 is prevented from being twisted off.
Specifically, when the upper ends of the jacking piston rods 1072 are respectively hinged with the shoulders 1051 of the vertical plates 105, the method further comprises: when the road surface is uneven in the traction process of the idler injection pipe 30, the jacking piston rod 1072 of the second hydraulic or pneumatic lifting assembly 107 at the corresponding position on the base 100 moves up and down relative to the cylinder barrel to drive the vertical plate 105 and the first speed reduction motor 102 on the vertical plate 105 to move up and down along the vertical guide rail 104, so as to adjust the inclination angle of the first speed reduction motor 102. Therefore, the height of the central shaft of the first speed reducing motor 102 and the first transmission sleeve 103 connected with the first speed reducing motor can be adjusted, and the concentricity of the traction force output by the first speed reducing motor 102 and the idler injecting pipe 30 is ensured.
Specifically, when the idle pipe 30 is provided with a torque monitoring device for monitoring the output torque of the first speed reduction motor 102, after the first speed reduction motor 102 of the traction moving device 10 is started, the method further includes: monitoring the output torque of the first reduction motor 102 by a torque monitoring device;
when the monitored torque change exceeds a preset threshold value, the first speed reducing motor 102 performs preset operation, for example, 5-10 forward and reverse rotation cycle rotation periods, wherein the time of each rotation period is 10-15 s;
when the monitored torque change is recovered to be within the preset threshold range, the first speed reducing motor 102 is controlled to rotate in a single direction according to the preset rotating direction so as to draw the idler injection pipe 30 to move.
Therefore, when the idle injection pipe 30 is killed by gangue and particulate matters discharged from the goaf, and the like, the idle injection pipe 30 pressed into the goaf can be loosened in the forward and reverse rotation mode, traction recovery under the blocking condition of the idle injection pipe 30 is realized, and then the idle injection pipe 30 is moved.
In order to realize the accurate control of the real-time inerting amount injection in the goaf, the method further comprises the following steps: monitoring the concentration of index gas in the goaf through a goaf bundle pipe monitoring system;
and controlling the flow of the inert gas entering the inert gas injection pipe 30 by an inert gas injection control system according to the concentration of the index gas in the goaf so as to realize accurate inert gas injection.
The goaf inert gas injection equipment and the idle gas injection method provided by the embodiment of the invention can improve the practicability and reliability of the equipment, solve the problem of breakage in the moving process of the inert gas injection pipe 30, solve the process construction of preventing fire in the area near the stoping line by injecting the inert gas, realize the prevention and control of natural ignition of the goaf in the whole process of pushing the working face, and ensure the safety and high-efficiency production of a mine.
It should be noted that, for simplicity of description, the foregoing method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and elements referred to are not necessarily required in this application. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
As used herein, the terms "upper," "lower," and the like, refer to orientations or positional relationships that are used for convenience in describing the present invention and to simplify description, but do not indicate or imply that the referenced devices or components must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. An idle equipment is annotated in collecting space area which characterized in that includes: the device comprises a traction moving device, an automatic resetting device and an idler injection pipe;
the traction moving device comprises a base, a travelling mechanism and a first speed reducing motor are arranged on the base, and a first transmission sleeve is connected to a shaft of the first speed reducing motor;
the automatic resetting device comprises a base, a second speed reducing motor with a braking function is arranged on the base, a second transmission sleeve is connected to the shaft of the second speed reducing motor, first transmission threads are arranged on the inner wall of the second transmission sleeve, and a working mode switching assembly enabling the automatic resetting device to be fixed and capable of walking is further arranged on the base;
the second transmission thread section is arranged on the idle injection pipe, the air inlet end of the idle injection pipe is fixedly connected into the first transmission sleeve, and the idle injection end of the idle injection pipe penetrates through the second transmission sleeve and is in matched transmission connection with the first transmission thread section through the second transmission thread section;
guide cylinders are symmetrically arranged on the machine base and positioned on two sides of the second speed reducing motor, a parking column penetrates through the guide cylinders, and a limiting part for preventing the parking column from being pulled out of the guide cylinders is arranged at the lower end of the parking column;
the working mode switching assembly comprises a first hydraulic or pneumatic lifting assembly, the first hydraulic or pneumatic lifting assembly comprises a cylinder barrel and a jacking piston rod capable of moving up and down relative to the cylinder barrel, a travelling wheel is arranged at the lower end of the cylinder barrel, and the upper end of the jacking piston rod is fixedly connected with the parking column through a first connecting piece;
when the first hydraulic or pneumatic lifting component is not lifted, the lower end of the parking column is grounded, the travelling wheels are lifted off the ground, and the automatic resetting device is in a fixed mode;
under the lifting state of the first hydraulic or pneumatic lifting assembly, the jacking piston rod rises relative to the cylinder barrel to drive the parking column to rise, the lower end of the parking column is lifted off, the travelling wheels are grounded, and the automatic resetting device is in a walking mode.
2. The inert injection device of claim 1, wherein the second transmission sleeve is of a stepped cylindrical structure and comprises a first stepped cylindrical section and a second stepped cylindrical section, the diameter of the first stepped cylindrical section is smaller than that of the second stepped cylindrical section, a sleeve seat is arranged below the machine seat, and the second transmission sleeve is rotatably arranged in the sleeve seat through the first stepped cylindrical section;
the second stepped cylinder section is positioned outside the end part of the sleeve seat, a first gear is mounted on the periphery of the second stepped cylinder section, a second gear is connected to the shaft of the second speed reducing motor, and the second gear is meshed with the first gear; alternatively, the first and second electrodes may be,
install first sprocket on the second step section of thick bamboo periphery, be connected with the second sprocket on the second gear motor shaft, the second sprocket with first sprocket passes through chain drive and is connected.
3. The inertia injection device according to claim 1, wherein two sets of vertical guide rails are arranged on the base and located on two sides of the first speed reduction motor, each set of vertical guide rails at least comprises two vertical guide rails arranged at intervals, a vertical plate is slidably arranged in each set of vertical guide rails, the vertical plate is in a T-shaped structure, a shoulder of the vertical plate is pressed on the upper end of each guide rail, and the first speed reduction motor is connected to the two sets of vertical plates and located in a space defined by the two sets of vertical guide rails and the two sets of vertical plates;
and the base is provided with second hydraulic or pneumatic lifting components corresponding to four corners of the first speed reduction motor and positioned on the outer side of the vertical guide rail, each second hydraulic or pneumatic lifting component comprises a cylinder barrel and a jacking piston rod capable of moving up and down relative to the cylinder barrel, the lower end of the cylinder barrel is connected to the base, and the upper end of the jacking piston rod is connected with the shoulder of the vertical plate.
4. The idle injection device of claim 3, wherein the upper ends of the jacking piston rods are respectively hinged with the shoulders of the vertical plates.
5. The inerter injection apparatus according to claim 1, wherein the traveling direction of the traveling mechanism coincides with the axial direction of the inerter injection pipe, the traveling mechanism includes a front wheel and a rear wheel, the front end of the base is provided with a front fork extending therefrom, the rear end of the base is provided with a rear fork extending therefrom, the front fork and the rear fork are respectively provided with a rotation shaft, the front wheel is provided at both ends of the rotation shaft of the front fork so as to be inclined inward, the rear wheel is provided at both ends of the rotation shaft of the rear fork so as to be inclined inward, and the front wheel and the rear wheel are respectively provided in a figure-in-the-eight shape.
6. An inerter injection apparatus according to claim 5, wherein the front and rear wheels are inclined at angles of 5 to 10 ° to the vertical plane, respectively.
7. The inerter injection device according to claim 1, wherein a torque monitoring device for monitoring the output torque of the first reduction motor is provided on the inerter injection pipe.
8. An inerting method for a goaf, which is implemented based on the inerting device in claim 3 or 4, is characterized by comprising the following steps:
arranging the idle injection equipment on the pushing side of the stope face in the adhesive tape crossheading, wherein an idle injection port of an idle injection pipe of the idle injection equipment extends into a goaf formed behind the stope face, the idle injection port of the idle injection pipe is arranged at a preset distance from the stope face, and an air inlet of the idle injection pipe is connected to an inert gas source and used for injecting inert gas into the goaf in the stope process;
fixing an automatic resetting device of the inert injection equipment through the working mode switching assembly; a second transmission sleeve of the automatic resetting device is positioned at one end, close to the traction moving device, of a second transmission thread section of the idler injection pipe;
starting a first speed reducing motor of a traction moving device along with the forward propulsion of a stope face to drive a first transmission sleeve connected with a shaft of the first speed reducing motor to rotate, and converting the rotation motion of an idle injection pipe fixedly connected to the first transmission sleeve into linear motion which is axially opposite to a second transmission sleeve of the traction moving device and faces the traction moving device through a second transmission thread section;
when the idler injection pipe moves to the second transmission sleeve of the automatic resetting device along the axial direction and is positioned at one end, far away from the traction moving device, of the second transmission thread section of the idler injection pipe, the first speed reduction motor is closed;
the automatic resetting device is switched to a walking working mode through the working mode switching assembly, a second speed reducing motor is started to drive a second transmission sleeve to be in matched transmission with the second transmission thread through the first transmission thread, the second transmission sleeve is reset at one end, close to the traction moving device, of a second transmission thread section of the idle injection pipe, and resetting of the automatic resetting device is achieved; during the resetting process, the injection idler pipe is pressed into the goaf and is fixed relative to the automatic resetting device;
and (4) repeating the steps in the stoping process to draw the inerting injection pipe to move until the inerting injection of the goaf formed in the stoping process is completed.
9. The method of claim 8, wherein the step of repeating the step of drawing the inerting pipe to move in the stoping process until the inerting of the goaf formed in the stoping process is completed comprises the following steps: when the working face is pushed to a position 10-20 m away from the stoping line, the step of dragging the idle injection pipe to move is not carried out, and the idle injection pipe is buried in the goaf, so that the natural ignition of the goaf in the area near the stoping line after sealing is prevented and controlled.
10. The method of claim 8, wherein prior to activating the first reduction motor of the traction movement device, the method further comprises: and the jacking piston rod of the second hydraulic or pneumatic lifting assembly moves up and down relative to the cylinder barrel to drive the vertical plate and the first speed reducing motor on the vertical plate to move up and down along the vertical guide rail, and the height of the first speed reducing motor is adjusted so that the torque output by the first speed reducing motor is concentric with the idle injection pipe.
11. The method of claim 10, further comprising: when the road surface is uneven in the traction process of the idler injection pipe, the jacking piston rod of the second hydraulic or pneumatic lifting assembly at the corresponding position on the base moves up and down relative to the cylinder barrel to drive the vertical plate and the first speed reduction motor on the vertical plate to move up and down along the vertical guide rail, and the inclination angle of the first speed reduction motor is adjusted.
12. The method of claim 8, wherein after activating the first reduction motor of the traction movement device, the method further comprises: monitoring the output torque of the first speed reducing motor through a torque monitoring device;
when the monitored torque change exceeds a preset threshold value, the first speed reducing motor performs a preset positive and negative rotation cycle rotation period, and the time of each rotation period is 10-15 s;
and when the monitored torque change is recovered to be within the preset threshold range, controlling the first speed reducing motor to rotate in a single direction according to the preset rotating direction so as to draw the inerter injection pipe to move.
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| CN201911008911.8A CN110821546B (en) | 2019-10-22 | 2019-10-22 | Equipment and process method for preventing spontaneous combustion of goaf by accurately injecting inert gas |
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| CN201911008911.8A CN110821546B (en) | 2019-10-22 | 2019-10-22 | Equipment and process method for preventing spontaneous combustion of goaf by accurately injecting inert gas |
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| CN106499431A (en) * | 2016-11-04 | 2017-03-15 | 大同煤矿集团有限责任公司 | Adjacent nitrogen injection in goaf method of fire protection during gob side entry driving |
| CN206439065U (en) * | 2016-12-26 | 2017-08-25 | 神华集团有限责任公司 | A kind of fire extinguishing nitrogen-filling system |
| CN107744631A (en) * | 2017-12-01 | 2018-03-02 | 中国矿业大学(北京) | A kind of nitrogen injection intelligent controlling device |
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| CN201443411U (en) * | 2009-07-23 | 2010-04-28 | 孙洪峰 | Movable nitrogen injection device |
| CN103233765A (en) * | 2013-04-28 | 2013-08-07 | 中国矿业大学(北京) | Nitrogen injection device and nitrogen injection method thereof |
| CN105525940A (en) * | 2016-01-18 | 2016-04-27 | 朱红青 | Automatic-control rotational traction type nitrogen injection fire preventing and extinguishing device |
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