NL2023125A - Side wall conveying system, a forming method and a conveying method for an explosion-proof coal mine roadway - Google Patents
Side wall conveying system, a forming method and a conveying method for an explosion-proof coal mine roadway Download PDFInfo
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- NL2023125A NL2023125A NL2023125A NL2023125A NL2023125A NL 2023125 A NL2023125 A NL 2023125A NL 2023125 A NL2023125 A NL 2023125A NL 2023125 A NL2023125 A NL 2023125A NL 2023125 A NL2023125 A NL 2023125A
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- 239000003245 coal Substances 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012546 transfer Methods 0.000 claims abstract description 48
- 238000009434 installation Methods 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims description 184
- 230000008093 supporting effect Effects 0.000 claims description 24
- 238000005452 bending Methods 0.000 claims description 13
- 238000005065 mining Methods 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 claims description 3
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- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
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- 238000004073 vulcanization Methods 0.000 description 1
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Classifications
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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
- B65G41/00—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames
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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
- E21F13/02—Transport of mined mineral in galleries
-
- 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
- B65G13/00—Roller-ways
-
- 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
- B65G25/00—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement
- B65G25/04—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement the carrier or impeller having identical forward and return paths of movement, e.g. reciprocating conveyors
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Abstract
The invention relates to a side wall conveying system, a forming method and a conveying method for an explosion-proof coal mine roadway. The conveying end of the side wall conveying system for the explosion-proof coal mine roadway is higher than the receiving end, and the ratio of the height difference between the conveying end and the receiving end to the distance from the conveying end to the receiving end is the installation slope, and multiple anchor rods (1) uniformly distributed from the conveying end to the receiving end are vertically inserted into the side wall of the explosion-proof coal mine roadway based on the installation slope, when the article is passed through the transfer shaft (1 1),the meshing wheel (18) rotates with the rotation of the meshing gear (l7)and the self-expanding rod sleeve (20) is moved toward the side wall by the connecting rod (19) under the driving of the meshing wheel (18), so that the conical spring (24) expands conical outer sleeve (26) against the wall, when the conveying article leaves the transfer shaft (1 l), the conical spring (24) elastically causes the self-expanding rod sleeve (20) to move in the opposite direction to the side wall to release the expanding conical outer sleeve (26).
Description
Technical Field
The invention belongs to the field of coal mine roadway transportation, and particularly relates to a side wall type conveying system, a forming method and a conveying method for an explosion-proof coal mine roadway.
Background Technique
With the continuous development of conveyor technology, the current conveyor has created a colorful new world, not only limited to the original start trough conveyor and belt conveyor can only linear transmission, more innovative according to the production site of different conditions of the production environment design more suitable conveyor model. Although there are great differences between the type and structure of the conveyor, it can be generally classified according to the structure, transport characteristics and other methods, generally divided into the following:
Fixed conveyor: As its name suggests, its rollers and racks are fixed. They are solidified into the environment according to the on-site production conditions. The whole conveyor body is solidified into one body. It is characterized by long service life and good stability. The foundation surface is flat and can not be inclined. It is widely used in coal transportation systems in coal mines, power transmission systems in coal mines, and port cargo transportation systems.
Retractable conveyor: The length of its conveyor belt can be adjusted according to the actual situation of on-site production. The environment under the initial mine is changeable. As the mining distance increases, the conveying length and conveying direction will inevitably change. In order to solve this contradiction, a retractable conveyor has been developed. Compared with the conventional fixed conveyor, it has a new device inside, which can store some spare conveyor belts when the production environment changes. These conveyor belts can be removed (or stored) and added (or reduced) to the rack to meet production needs. The plug-in connection is usually adopted between the frames, and the entire frame is fixed by pins, which is convenient for disassembly and reassembly.
Mobile belt conveyor: It is characterized by its convenience. The product has been assembled since it came out of the factory. It can be applied to a variety of terrains and can be moved very conveniently.
In addition, there are steel cord belt conveyors, wire friction belt conveyors, flat curved belt conveyors, large angle belt conveyors, air cushion belt conveyors, and the like.
Belt conveyor is an indispensable transportation equipment in coal mine production. It mainly undertakes horizontal transportation and inclined transportation of materials. It has the characteristics of simple and convenient operation and large transportation capacity. It is widely used in coal mine production, whether it is underground roadway or ground. Conveyor systems are also used in open-pit mines where belt conveyors are used for continuous transport. The belt conveyor mainly consists of 2 rollers and 1 conveyor belt. Wherein the conveyor belt is closed to the tight sleeve drum, and the two rollers are respectively a drive roller for rotating the conveyor belt and a redirecting roller for changing the conveying direction of the conveyor belt. The drive roller is usually mounted at the discharge end to increase traction and prevent slippage. The drive roller is powered by an electric motor and the power is transmitted to the conveyor belt by friction between the drum and the conveyor belt. The material usually enters from the redirected end of the drum and falls onto the conveyor belt, unloading as the belt rotates to the end of the drive drum.
The belt conveyor is mainly composed of a conveyor belt, a roller at both ends, a tensioning device, a roller frame and a transmission. The conveyor belt bypasses the rollers at both ends, and uses a belt clip or vulcanization to join the ends to form a closed loop structure. The belt is supported by the rollers, which are then tensioned by the tensioning device and retain the proper tension. When the drive roller starts to work, the conveyor belt begins to rotate by the frictional force with the drive roller, and the material is discharged as the conveyor belt moves to the reversing drum end.
In the coal mine roadway, some of the roadways are explosion-proof coal mine roadways. In the roadway, the use of electric power or internal combustion engine and other power equipment is likely to lead to safety accidents. A transmission system specially used in explosion-proof coal mine roadway is of great significance for ensuring coal mine safety production. It has no power or other power drive, can automatically control speed, wear parts are replaced independently, site adaptability, flexibility and flexibility.
The above information disclosed in the Background section is only for enhancement of understanding of the background of the invention, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art.
Summary Of The Invention
The present inventors conducted intensive studies in order to achieve the above object, in particular, The invention relates to a side wall conveying system, a forming method and a conveying method for an explosion-proof coal mine roadway. The conveying end of the side wall conveying system for the explosion-proof coal mine roadway is higher than the receiving end, and the ratio of the height difference between the conveying end and the receiving end to the distance from the conveying end to the receiving end is the installation slope, and the conveying system includes:
Multiple anchor rods , multiple anchor rods evenly distributed from the conveying end to the receiving end are vertically inserted into the side walls of the explosion-proof coal mine roadway based on the installation slope, and the anchor rods are provided for supporting anchor plate,
The telescopic frame, the telescopic frame supported on the anchor plate comprises multiple x type telescopic units which are stretchable and compressible, and a support frame for supporting the x type telescopic unit .The x type telescopic unit comprises the main frame of a telescopic frame for supporting a pivotable point of the conveyor belt, and a part of the x type telescopic unit connect the first axis at its pivot point ;at the bottom of the main frame of telescopic frame of a part of the x type telescopic unit is connected to the second axis , and the support frame is connected to one end of the x type telescopic unit, the other end is connected to the anchor rods, and the telescopic frame is provided with a lateral transmission wheel on one side or both sides.
A conveyor belt, a conveyor belt for conveying a conveyed article includes a rotatable transfer shaft provided at a top end of the main frame of telescopic frame and multiple transmission wheels uniformly distributed on the transfer shaft, where in the transmission wheel is detachably coupled to the transfer shaft,
A transmission speed control unit, which includes
A first bevel gear fixedly coupled to the transfer shaft and rotated as the transfer shaft rotates,
A second bevel gear, a second bevel gear that engages the first bevel gear is fixedly coupled to the top end of the transmission rod and causes the transmission rod to rotate perpendicular to the conveying direction,
Meshing gear, the meshing gear fixedly attached to the bottom end of the transmission rod rotates with the rotation of the transmission rod,
The meshing wheel comprises a first engaging gear portion of the meshing gear,
Connecting rod , one end of which is connected with the meshing wheel and the other end is connected with the self-expanding rod sleeve rod, wherein, the selfexpanding rod sleeve is driven by the meshing wheel via a connecting rod,
The self-expanding rod comprises a self-expanding rod transmission inner shaft and a self-expanding rod sleeve rod having the self-expanding rod transmission inner shaft, the self-expanding rod transmission inner shaft is fixedly disposed in the side wall via a support member, and a tapered spring with a larger diameter toward the side wall is arranged on a self-expanding rod transmission inner shaft through a spring retaining ring for limiting the conical spring ,the self-expanding rod sleeve rod comprises a conical outer sleeve of the conical spring, when the article is passed through the transfer shaft, the meshing wheel rotates with the rotation of the meshing gear and the self-expanding rod sleeve is moved toward the side wall by the connecting rod under the driving of the meshing wheel, so that the conical spring expands conical outer sleeve against the wall, when the conveying article leaves the transfer shaft, the conical spring elastically causes the self-expanding rod sleeve to move in the opposite direction to the side wall to release the expanding conical outer sleeve.
In the side wall transmission system used for explosion-proof coal mine roadway, the length L of each anchor includes the Length LI exposed from side wall to support anchor plate and depth L2 inserted into side wall, the ultimate load q of the conveyor
M lnax = —qL} 2 system satisfies the maximum bending moment 2 ,and maximum deflection ®πκκ “---8£7 ,where El is the bending stiffness of the anchor and the maximum pull-out force of the bolt
I., I·, ris’T ................... ...2. jsf7e ^1!»,·« = = απ/ί[τ]|' e dx = anD'^E / 8κ[τ](1 - e 2i! ) in the formula a is the coefficient of influence of residual bond shear stress, 1 is the K = J^_ bond strength of the binder on the surface of the rod 1 2 ,K1 is the shear strength of the binder, K2 is the shear strength of the surrounding rock mass, ε is the tensile strain of the rod body, and D is the gap width between the rod body and the borehole.
In the side wall transmission system used for explosion-proof coal mine roadway, the transmission line of the conveying system is divided into a c type transmission route and an s type transmission route and the straight line transmission route, the side turning wheel is provided at the turn of the c type transmission route and the s type transmission route, and the x type telescopic unit is in a stretching state on the outside of the turn and a contracting on the inside of the wall.
In the side wall transmission system used for explosion-proof coal mine roadway, the conveying friction coefficient of the conveyor belt is substantially equal to the tangent value of the installation slope, the transmission wheel includes a bearing inner ring connecting the transmission shaft and a bearing outer ring for rolling around the transmission shaft, the receiving end is provided with a buffer unit for stopping the conveyance of the article.
In the side wall transmission system used for explosion-proof coal mine roadway, the Length LI exposed from side wall to support anchor plate is 2 m and the depth L2 inserted into side wall is 2 m, the ultimate load q is 3 KN/m and the transmission friction coefficient u is 0.2.
In the side wall transmission system used for explosion-proof coal mine roadway, the transmission speed control unit includes a rack, the meshing wheel includes a first engaging gear portion that engages the meshing gear and a second engaging gear portion that engages the rack gear , the rack engages the second engaging gear portion and is connected to the self-expanding rod sleeve , wherein The self-expanding rod sleeve rod moves in a straight line driven by the meshing wheel through the rack.
In the side wall transmission system used for explosion-proof coal mine roadway, the number of meshing gear of the first meshing gear portion and/or the second meshing gear portion is smaller than the predetermined number. So that the self-expanding rod sleeve rod moves less than half of the length of the conical outer sleeve.
According to another aspect of the invention, a method for forming a sidewall transmission system used in an explosion-proof coal mine roadway includes the following steps:
In a first step, determining a conveying end, a receiving end and the installation slope, and the conveying end is higher than the receiving end, the ratio of the height difference between the conveying end and the receiving end to the distance from the conveying end to the receiving end is the installation slope.
In a second step, multiple anchor rods, multiple anchor rods evenly distributed from the conveying end to the receiving end are vertically inserted into the side walls of the explosion-proof coal mine roadway based on the installation slope, and the anchor rods are provided for supporting anchor plate, the anchor rod an anchor plate for supporting is provided, wherein the length LI for supporting the anchor plate from the side wall is determined based on the minimum of the maximum bending moment and the maximum disturbance formed by the ultimate load q that can be withstood, and the depth L2 inserted into the side wall is determined based on the maximum pullout force,
In a third step, he support frame is connected to one end of the x type telescopic unit, the other end is connected to the anchor rods, a part of the x type telescopic unit connect the first axis at its pivot point; at the bottom of the main frame of telescopic frame of a part of the x type telescopic unit is connected to the second axis , the telescopic frame is provided with a lateral transmission wheel on one side or both sides.
In the fourth step, the transfer shaft is arranged at the top of the telescopic main frame, and multiple transmission wheels uniformly distributed on the transfer shaft , wherein the transmission wheel is detachably coupled to the transfer shaft,
In a fifth step , the first bevel gear fixedly coupled to the transfer shaft, a second bevel gear that engages the first bevel gear is fixedly coupled to the top end of the transmission rod, the meshing gear is fixedly attached to the bottom end of the transmission rod, the meshing wheel comprises a first engaging gear portion of the meshing gear , connecting rod, one end of which is connected with the meshing wheel and the other end is connected with the self-expanding rod sleeve rod, the self-expanding rod sleeve rod comprises a conical outer sleeve of the conical spring, the self-expanding rod transmission inner shaft is fixedly disposed in the side wall via a support member, and a tapered spring with a larger diameter toward the side wall is arranged on a selfexpanding rod transmission inner shaft through a spring retaining ring for limiting the conical spring .
In the formation method, the transmission route of the transmission system forms a C type transmission route, an S type transmission route and a straight line transmission route.
According to another aspect of the invention, a method for forming a sidewall transmission system used in an explosion-proof coal mine roadway includes the following steps:
the transport item is placed at the transport end of the transport system, and the transport item is transported by gravity to the receiving end via the drive belt based on the installation gradient, wherein when the article is passed through the transfer shaft, the meshing wheel rotates with the rotation of the meshing gear and the self-expanding rod sleeve is moved toward the side wall by the connecting rod under the driving of the meshing wheel, so that the conical spring expands conical outer sleeve , when the conveying article leaves the transfer shaft, the conical spring elastically causes the selfexpanding rod sleeve to move in the opposite direction to the side wall to release the expanding conical outer sleeve ,and the conveyed article reaches the receiving end via the speed limit control unit.
The technical effects of the invention are as follows:
According to the sidewall transmission system, formation method and transmission method used in the explosion-proof coal mine roadway, the sidewall transmission system used in the explosion-proof coal mine roadway is specially used in the explosion-proof coal mine roadway without the need of electric drive, strong site adaptability, independent replacement of wear parts, flexible expansion and automatic control of transmission speed. The invention based on vertical installation incline to insert multiple anchor formation of explosion-proof wall of roadway in coal mine using the transmission system of gravity, the telescopic flexible bearing conveyor belt use, strong adaptability, driving wheel can remove the ground connection transmission shaft makes easy wear of wheel is easy to change, increase of the explosion-proof type coal mine roadway maintenance convenience, the speed control unit uses the transmission article to drive the rotation of the transmission shaft of the ground, and the self-expanding rod sleeve is moved toward the side wall by the connecting rod via the connecting rod, so that the conical spring expands the conical outer sleeve to abut a wall, which enables the system to automatically control the speed, particularly when cornering, when the conveying article leaves the conveying shaft, the conical spring elastically moves the self-expanding rod sleeve in a direction opposite to the side wall direction to release the conical outer sleeve26, that is, returns to the initial position, so that it can enable the next batch of transported articles to continue to operate, the present invention can be safely, energyefficiently, economically, efficiently and conveniently transported in an explosion-proof roadway.
Description Of The Figures
Figure 1 is a schematic diagram of the overall structure of an embodiment of the side wall conveying system for explosion-proof coal mine roadways of the present invention.
Figure 2 is a schematic cross-sectional view of an extension frame of an embodiment of the side wall conveying system for explosion-proof coal mine roadways of the present invention.
Figure 3 is a schematic structural view of a telescopic frame of an embodiment of the side wall conveying system for explosion-proof coal mine roadways of the present invention.
Figure 4 is a schematic view showing a tensile structure of a telescopic frame of an embodiment of the side wall conveying system for explosion-proof coal mine roadways of the present invention.
Figure 5 is a schematic view showing a contraction structure of a telescopic frame of an embodiment of the side wall conveying system for explosion-proof coal mine roadways of the present invention.
Figure 6 is a top plan view of one embodiment of a side wall conveyor system for an explosion-proof coal mine roadway of the present invention.
Figure 7 is a top plan view of another embodiment of a side wall conveyor system for an explosion-proof coal mine roadway of the present invention.
Figure 8 is a schematic structural view of a speed control unit of an embodiment of a side wall conveying system for an explosion-proof coal mine roadway according to the present invention.
Figure 9 is a schematic structural view of an engaging wheel of one embodiment of a side wall conveying system for an explosion-proof coal mine roadway according to the present invention.
Figure 10 is a schematic structural view of a self-expanding rod of one embodiment of a side wall conveying system for an explosion-proof coal mine roadway according to the present invention.
Figure 11 is a schematic structural view of a speed control unit of another embodiment of a side wall conveyor system for an explosion-proof coal mine roadacway cording to the present invention.
Figure 12 is a schematic structural view of another embodiment of the side wall conveying system for explosion-proof coal mine roadways of the present invention.
Figure 13 is a schematic view showing the steps of a method for forming a side wall conveying system for explosion-proof coal mine roadway of the present invention.
Figure 14 is a schematic view showing three transmission routes of a method for forming a side wall conveying system for an explosion-proof coal mine roadway of the present invention.
Detailed Implementation Methods
Specific embodiments of the invention are described in more detail below with reference to the attached drawings. Although specific embodiments of the invention are shown in the accompanying drawings, it should be understood that the invention may be implemented in various forms and shall not be restricted by the embodiments described herein. Rather, these embodiments are provided for a more thorough understanding of the invention and for the complete communication of the scope of the invention to technicians in the field.
It should be noted that certain terms are used in the specification and claims to refer to specific components. The technical person in the field should understand that the technical person may use different terms for the same component. This specification and claims do not take differences in terms as a way to distinguish components, but take differences in functions of components as a criterion to distinguish. If include or include mentioned in the entire prospectus and claims is an open term, it shall be interpreted as include without limitation. The subsequent description of the specification is a better embodiment of the invention, but the description is for the purpose of the general principles of the specification and is not intended to limit the scope of the invention. The scope of protection of the invention shall be subject to the definition of the attached claims.
For the sake of understanding the embodiments of the present invention, the following detailed description of the embodiments of the present invention is not to be construed as limited.
Specifically, FIG. 1 is the overall structure diagram of an embodiment of the sidewall transmission system used in the explosion-proof coal mine roadway of the ίο invention. As shown in FIG. 1, the sidewall transmission system used in the explosionproof coal mine roadway of the invention has a conveying end higher than the receiving end, the ratio of the height difference between the conveying end and the receiving end to the distance from the conveying end to the receiving end is the installation slope, the conveying system includes,
Multiple anchor rods (1), multiple anchor rods (1) evenly distributed from the conveying end to the receiving end are vertically inserted into the side walls of the explosion-proof coal mine roadway based on the installation slope, and the anchor rods (1) are provided for supporting anchor plate,
FIG.2 is a schematic diagram of a telescopic frame section of an embodiment of the sidewall transmission system used in the explosion-proof coal mine roadway, as shown in the figure, the telescopic frame, the telescopic frame supported on the anchor plate comprises multiple x type telescopic units which are stretchable and compressible, and a support frame for supporting the x type telescopic unit. The x type telescopic unit comprises the main frame of a telescopic frame for supporting a pivotable point of the conveyor belt, and a part of the x type telescopic unit connect the first axis at its pivot point; at the bottom of the main frame of telescopic frame of a part of the x type telescopic unit is connected to the second axis , and the support frame is connected to one end of the x type telescopic unit, the other end is connected to the anchor rods, and the telescopic frame is provided with a lateral transmission wheel on one side or both sides. Figure 3 is a schematic structural view of a telescopic frame of an embodiment of the side wall conveying system for explosion-proof coal mine roadways of the present invention. Figure 4 is a schematic view showing a tensile structure of a telescopic frame of an embodiment of the side wall conveying system for explosion-proof coal mine roadways of the present invention. Figure 5 is a schematic view showing a contraction structure of a telescopic frame of an embodiment of the side wall conveying system for explosion-proof coal mine roadways of the present invention, the length of the telescopic frame can be stretched and compressed according to the demand, and the lateral driving wheel is set on both sides of the telescopic frame to guide the transportation direction of the goods in case of sharp bend of the conveyor belt and prevent the goods from falling, the telescopic frame of this system can be stretched and contracted, and it is applied flexibly in coal mine roadway.
Figure 6 is a top plan view of one embodiment of a side wall conveyor system for an explosion-proof coal mine roadway of the present invention, a conveyor belt 5, a conveyor belt for conveying a conveyed articles includes a rotatable transfer shaft 1 Iprovided at a top end of the main frame of telescopic frame 7 and multiple transmission wheels 12uniformly distributed on the transfer shaft 11 , where in the transmission wheel 12 is detachably coupled to the transfer shaft 11,Figure 7 is a top plan view of another embodiment of a side wall conveyor system for an explosion-proof coal mine roadway of the present invention. The transmission wheel 12 May be in the form of a roller. In one embodiment, when the transmission wheel or the transmission roller is in normal operation due to wear and tear, it can be replaced independently to avoid the disadvantage of the belt conveyor being replaced as a whole, which is more convenient and economical. The transported goods are divided into whole goods and broken goods. The whole goods are transported by the transmission wheel, while the broken goods are transported by the transmission roller.
Figure 8 is a schematic structural view of a speed control unit of an embodiment of a side wall conveying system for an explosion-proof coal mine roadway according to the present invention. A transmission speed control unit 13, which includes
A first bevel gear 14 fixedly coupled to the transfer shaft 11 and rotated as the transfer shaft 11 rotates,
A second bevel gear 15, a second bevel gear 15 that engages the first bevel gear 14 is fixedly coupled to the top end of the transmission rod 16 and causes the transmission rod 16 to rotate perpendicular to the conveying direction,
Meshing gear 17, the meshing gear 17 fixedly attached to the bottom end of the transmission rod 16 rotates with the rotation of the transmission rod 16,
The meshing wheel 18 comprises a first engaging gear portion 30 of the meshing gear 17,
Figure 9 is a schematic structural view of an engaging wheel of one embodiment of a side wall conveying system for an explosion-proof coal mine roadway according to the present invention. The meshing wheel 18 comprises a first engaging gear portion 30 of the meshing gear 17,
Connecting rod 19, one end of which is connected with the meshing wheel 18 and the other end is connected with the self-expanding rod sleeve rod 20,wherein, the selfexpanding rod sleeve 20 is driven by the meshing wheel 18 via a connecting rod 19,
Figure 10 is a schematic structural view of a self-expanding rod of one embodiment of a side wall conveying system for an explosion-proof coal mine roadway according to the present invention, the self-expanding rod 21 comprises a self-expanding rod transmission inner shaft 22 and a self-expanding rod sleeve rod 20 having the selfexpanding rod transmission inner shaft 22, the self-expanding rod transmission inner shaft 22 is fixedly disposed in the side wall via a support member 23, and a tapered spring 24 with a larger diameter toward the side wall is arranged on a self-expanding rod transmission inner shaft 22 through a spring retaining ring 25 for limiting the conical spring 24,the self-expanding rod sleeve rod 20 comprises a conical outer sleeve 26 of the conical spring 24, when the article is passed through the transfer shaft 11,the meshing wheel 18 rotates with the rotation of the meshing gear 17 and the self-expanding rod sleeve 20 is moved toward the side wall by the connecting rod 19 under the driving of the meshing wheel 18, so that the conical spring 24 expands conical outer sleeve 26 against the wall, when the conical outer sleeve is expanded to a certain extent, friction with the wall creates resistance, lowers the rotational speed and thus controls the maximum transport speed of the transported article, preventing the article from falling or the system tipping over, when the conveying article leaves the transfer shaft 11, the conical spring 24 elastically causes the self-expanding rod sleeve 20 to move in the opposite direction to the side wall to release the expanding conical outer sleeve 26.
The transmission system of the invention is dedicated to an explosion-proof coal mine roadway and avoids safety hazards because no power equipment such as electric power and engine is needed. The present invention utilizes gravity by vertically inserting a plurality of anchor rods in the side wall of the explosion-proof coal mine roadway based on the installation slope. The transmission system adopts the telescopic frame to carry the conveyor belt. It is flexible in use and adaptable to the site. The transmission wheel 12 is detachably connected to the transmission shaft, making the easy-to-wear transmission wheel easy to replace, improving the maintenance convenience in the explosion-proof coal mine roadway, and the speed control unit drives the transmission shaft of the ground to rotate when the article is conveyed, the self-expanding rod sleeve 20 is moved in the direction of the side wall by the connecting rod 19 via the connecting rod 19, so that the conical spring 24 expands the conical outer sleeve 26 against the wall, which enables the system to be automatically controlled speed, Particularly when cornering, when the article is transported away from the transport shaft 11, the conical spring 24 acts elastically to move the self-expanding rod sleeve 20 in the opposite direction of the side wall to unwind the tapered outer casing 26 , that is, return to the initial position, so that the next batch of delivered items can continue to operate. The system can control the speed of the transported items to the destination in a safe and energy-saving manner.
In a preferred embodiment of the side wall conveyor system for an explosion-proof coal mine roadway according to the present invention, the length L of each anchor (1) includes the Length LI exposed from side wall to support anchor plate and depth L2 inserted into side wall, the ultimate load q of the conveyor system satisfies the maximum . .- — qL 1 a> _. = bending moment ‘ 2 maximum deflection ,where El is the bending stiffness of the anchor and the maximum pull-out force of the bolt
L, L, ..................
Fliaax = J2 απΰτ(χ)(1χ = απθ[τ]|; 2 e 11 dx = adb'xl2 / 8K[τ](1 - e 2I> ) in the formula a is the coefficient of influence of residual bond shear stress, [τ 1 is the K=^k' I k' bond strength of the binder on the surface of the rod 1 2 ,K1 is the shear strength of the binder, K2 is the shear strength of the surrounding rock mass, ε is the tensile strain of the rod body, and D is the gap width between the rod body and the borehole, the conveyor system is capable of inserting the appropriate depth of the wall into the appropriate depth based on the ultimate load that needs to be transmitted, using appropriate anchor material and dimensions, and saving costs while maintaining safety.
In a preferred embodiment of the side wall conveyor system for an explosion-proof coal mine roadway according to the present invention, the transmission line of the transmission system is divided into a c type transmission route 27, an s type transmission route 28, and a linear transmission route29, a side turning wheel 10 is provided at the turn of the c type transmission route 27 and the s type transmission route 29, and the x type telescopic unit 3 is stretched outside the corner, the inside of the wall is in a contracting state.
In a preferred embodiment of the side wall conveyor system for an explosion-proof coal mine roadway according to the present invention, the conveyor system may be arranged with a speed control unit on each of the drive shafts or on a partial drive shaft, in one embodiment, the speed control unit is arranged on the transmission shaft in the c type transmission route 27 and the s type transmission route 29, and the safety of the system is improved by arranging the speed control unit at the corner.
In a preferred embodiment of the side wall conveyor system for an explosion-proof coal mine roadway according to the present invention, the conveyor belt 5 has a transmission friction coefficient substantially equal to the tangent of the installation slope, and the transmission wheel 12 includes a bearing inner ring connecting the transmission shaft 11 and a bearing outer ring for rolling around the transmission shaft 11 and the receiving end is provided with a buffer unit for stopping the conveyance of articles. In the case of the output end and the receiving end of the explosion-proof coal mine roadway and the transportation distance setting, the transmission system adjusts the conveying speed of the system by changing the transmission friction coefficient.
In a preferred embodiment of the side wall conveyor system for an explosion-proof coal mine roadway according to the present invention, the side wall is exposed for supporting the anchor plate with a length LI of 2 m and the inserted side wall having a depth L2 of 2 m, a limit load q of 3 KN/m, and a transmission friction coefficient u of 0.2.111 one embodiment, a length of 4 m is driven into the rock wall, the length outside the rock wall is 2 m, and the length of the rock wall is 2 m. The force of the bolt is a uniform load with a concentration of q=lKN/m, and the position of the maximum bending moment of the bolt is on the fixed end, the size isA/max = ^-^2 =1KN -m ; the position of the maximum deflection is the free end and the size is®max = 2_l_ = 3.26cm ,
SEI among them, El is the flexural rigidity of anchor rod. The bending moment at the fixed end will act on the anchor bracket, and the failure of the anchor bracket will affect the bearing capacity of the anchor, so the ultimate bearing capacity of the anchor bracket can be determined by the ultimate bearing capacity of the anchor bracket qimax=3KN7m. In addition, the pull-out force of the anchor rod also depends on the adhesive force τ of the adhesive, and the pull-out force Fl max reaches the maximum when the adhesive breaks to the midpoint of the anchoring length
L. ri (^,/2) ______ 1 eieë
F)max = f2 απϋτ(χ)ί& = απ0[τ]Ρ e D dx = -<? 1D ) = 50AjV , In *2,?
the formula, a is the coefficient of influence of the residual bond shear stress, which is taken as 1.5. The effect of the fixed end bending moment and the free end maximum deflection caused by the uniform load q, The maximum pullout force F Imax determines the ultimate load that the bolt can withstand q2max=4KN/m.to ensure the safety of the anchor, jWin^lmax’?2max C1, where n is the safety factor and is taken as 2.In this case
A/in(<7lniax,#2niax)l(nq) = 1.5 , Satisfy safety and does not cause excessive waste on the material properties, so it is not necessary to change the parameters, thus determining the bolt pallet specifications and the maximum pullout force of the bolt; If Arin(</lmax, </2nKiX )/(»</) the value is large or the safety requirements ΛΛπ(^1ηκιχ, ^2max)/ n > q are not met, then the calculation is performed again, and the specific method is the same as above. Determine the installation slope: the height of one end of the transported item is higher than the height of the end of the obtained item, and the ratio of the height difference to the transport distance is the installation slope. The weight of the conveyed articles is G=500N, the friction coefficient of the conveyor belt is u=0.2, the length of the transmission path is S=100m, and the installation slope is Θ. The friction force during the transportation of the article is uGcosO, and the kinetic energy consumed in the transmission path is uGScos Θ, in order to keep the speed constant during the transmission of the article, then the kinetic energy consumed by the friction needs to be equal to the kinetic energy converted by the gravitational potential energy, that is, uGScos Θ = GSsin Θ, so u = tan Θ, that is, tan Θ = 0.2, that is, the tangent of the installation slope is equal to the friction coefficient of the conveyor belt.
In a preferred embodiment of the side wall conveyor system for an explosionproof coal mine roadway according to the present invention, FIG. 11 is a schematic structural view of a speed control unit of another embodiment of a side wall conveyor system for an explosion-proof coal mine roadway according to the present invention.
is a schematic structural view of a meshing wheel of another embodiment of a side wall conveying system for an explosion-proof coal mine roadway according to the present invention; as shown in Figure 11-12,the transmission speed control unit 13 includes a rack, the meshing wheel 18 includes a first engaging gear portion 30 that engages the meshing gear 17 and a second engaging gear portion that engages the rack gear 31, the rack engages the second engaging gear portion and is connected to the selfexpanding rod sleeve 20, wherein The self-expanding rod sleeve rod 20 moves in a straight line driven by the meshing wheel 18 through the rack 19.
In a preferred embodiment of the side wall conveyor system for an explosionproof coal mine roadway according to the present invention, the number of meshing gear of the first meshing gear portion 30 and/or the second meshing gear portion 31 is smaller than the predetermined number. So that the self-expanding rod sleeve rod 20 moves less than half of the length of the conical outer sleeve 26.
Figure 13 is a schematic view showing the steps of a method for forming a side wall conveying system for explosion-proof coal mine roadway of the present invention. A method for forming a sidewall transmission system used in an explosionproof coal mine roadway includes the following steps:
In a first step si, determining a conveying end, a receiving end and the installation slope, and the conveying end is higher than the receiving end, the ratio of the height difference between the conveying end and the receiving end to the distance from the conveying end to the receiving end is the installation slope.
In a second step S2,multiple anchor rods 1, multiple anchor rods 1 evenly distributed from the conveying end to the receiving end are vertically inserted into the side walls of the explosion-proof coal mine roadway based on the installation slope, and the anchor rods 1 are provided for supporting anchor plate, the anchor rod 1 an anchor plate for supporting is provided, wherein the length LI for supporting the anchor plate from the side wall is determined based on the minimum of the maximum bending moment and the maximum disturbance formed by the ultimate load q that can be withstood, and the depth L2 inserted into the side wall is determined based on the maximum pullout force,
In a third step s3,the support frame 4 is connected to one end of the x type telescopic unit3, the other end is connected to the anchor rods, a part of the x type telescopic unit 3 connect the first axis 8 at its pivot point 6;at the bottom of the main frame of telescopic frame 7 of a part of the x type telescopic unit 3 is connected to the second axis 9 , the telescopic frame 2 is provided with a lateral transmission wheel 10 on one side or both sides.
In the fourth step s4, the transfer shaft 11 is arranged at the top of the telescopic main frame 7, and multiple transmission wheels 12 uniformly distributed on the transfer shaft 11, wherein the transmission wheel 12 is detachably coupled to the transfer shaft 11,
In a fifth step s5, the first bevel gear 14 fixedly coupled to the transfer shaft 1 l,a second bevel gear 15 that engages the first bevel gear 14 is fixedly coupled to the top end of the transmission rod 16 , the meshing gear 17 is fixedly attached to the bottom end of the transmission rod 16 ,the meshing wheel 18 comprises a first engaging gear portion 30 of the meshing gear 17, connecting rod 19, one end of which is connected with the meshing wheel 18 and the other end is connected with the self-expanding rod sleeve rod 20,the self-expanding rod sleeve rod 20 comprises a conical outer sleeve 26 of the conical spring 24,the self-expanding rod transmission inner shaft 22 is fixedly disposed in the side wall via a support member 23, and a tapered spring 24 with a larger diameter toward the side wall is arranged on a self-expanding rod transmission inner shaft 22 through a spring retaining ring 25 for limiting the conical spring 24.
In a preferred embodiment of the forming method, FIG. 14 is a schematic diagram of three transmission routes of a method for forming a side wall conveying system for an explosion-proof coal mine roadway, and the transmission route of the conveying system forms a “c” type transmission. Route 27, s type transmission route 28 and straight transmission route 29.In the straight section of the roadway, the straight line transmission route 29 is adopted; at the turning point of the roadway, the c type transmission route 27 is adopted; at the continuous inflection point of the roadway, the s type transmission route 28 is adopted, thereby ensuring the invention in different lane environments, adaptability.
The conveying method of the side wall conveying system for the explosion-proof coal mine roadway comprises the following steps:
the transported item is placed at the transport end of the transport system, and the transported item is transported by gravity to the receiving end via the belt 5 based on the installation slope, Wherein, when the conveying article passes through the conveying shaft 11, the engaging wheel 18 rotates with the rotation of the meshing gear 17, and the self-expanding lever sleeve 20 is driven to the side via the rack or the link 19 under the driving of the engaging wheel 18. The wall direction moves such that the conical spring 24 expands the conical outer sleeve 26, and when the conveying article leaves the conveying shaft 11, the conical spring 24 elastically causes the selfexpanding rod sleeve 20 to face in the opposite direction of the side wall The movement is to unwind the tapered outer casing 26, and the conveyed article reaches the receiving end via the conveying speed control unit 13 at a speed limit.
This transmission method for transport of goods to the initial speed in the expansion on the driving wheel rack, moving along the installation incline to control its maximum speed, prevent due to inertia too fast and cause system instability, each interval set a certain distance from the pole, because this system adopts purely mechanical motion, without electricity, which can effectively prevent roadway explosion accident due to leakage, etc. The system has the advantages of high efficiency and low consumption, controlling the transportation speed, ensuring the safety of the system, independent replacement of worn parts, strong adaptability of the 5 site and flexible expansion.
Industrial applicability
The side wall conveying system, the forming method and the granules for the explosion-proof coal mine roadway of the invention can be manufactured and used in the 10 field of medical preparation.
Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the specific embodiments and the fields of application described above, and the specific embodiments described above are merely illustrative and not restrictive. .A person 15 skilled in the art can make various forms under the suggestion of the present specification and without departing from the scope of the claims of the present invention, which are all protected by the present invention.
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460768.5A CN108773640A (en) | 2018-05-14 | 2018-05-14 | Lateral wall type conveyer system, forming method and transfer approach for explosion-proof coal mine roadway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL2023125A true NL2023125A (en) | 2019-11-21 |
| NL2023125B1 NL2023125B1 (en) | 2020-01-07 |
Family
ID=64027139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2023125A NL2023125B1 (en) | 2018-05-14 | 2019-05-13 | Side wall conveying system, a forming method and a conveying method for an explosion-proof coal mine roadway |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108773640A (en) |
| NL (1) | NL2023125B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3378125A (en) * | 1966-08-17 | 1968-04-16 | Rapistan Inc | Telescopic conveyor |
| CN203488205U (en) * | 2013-07-05 | 2014-03-19 | 煤炭工业济南设计研究院有限公司 | Installation arrangement of belt type transmission device in inclined drift |
| CN204675220U (en) * | 2015-03-18 | 2015-09-30 | 上海城邦自动化设备有限公司 | A kind of flange polygon cross-piece concertina type Conveyor |
-
2018
- 2018-05-14 CN CN201810460768.5A patent/CN108773640A/en active Pending
-
2019
- 2019-05-13 NL NL2023125A patent/NL2023125B1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3378125A (en) * | 1966-08-17 | 1968-04-16 | Rapistan Inc | Telescopic conveyor |
| CN203488205U (en) * | 2013-07-05 | 2014-03-19 | 煤炭工业济南设计研究院有限公司 | Installation arrangement of belt type transmission device in inclined drift |
| CN204675220U (en) * | 2015-03-18 | 2015-09-30 | 上海城邦自动化设备有限公司 | A kind of flange polygon cross-piece concertina type Conveyor |
Also Published As
| Publication number | Publication date |
|---|---|
| NL2023125B1 (en) | 2020-01-07 |
| CN108773640A (en) | 2018-11-09 |
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