CN210317319U - Small-section shield tunneling machine for coal mine - Google Patents
Small-section shield tunneling machine for coal mine Download PDFInfo
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- CN210317319U CN210317319U CN201921001293.XU CN201921001293U CN210317319U CN 210317319 U CN210317319 U CN 210317319U CN 201921001293 U CN201921001293 U CN 201921001293U CN 210317319 U CN210317319 U CN 210317319U
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Abstract
The utility model belongs to tunnel tunnelling equipment for the colliery provides a little section shield tunnelling machine for colliery, including the blade disc, the front shield body, prop the boots system, the trailer, girder and waste rock conveying system, the blade disc rotates with the front end of the front shield body to be connected, prop the thrust cylinder that the boots system includes the saddle and is connected the front end of saddle and the rear end of the front shield body, the rear end of saddle is connected with the front end of trailer, be equipped with hydraulic system on the trailer, the electric cabinet, river system and control chamber, the girder passes the saddle, both ends are connected with the front shield body and trailer respectively around the girder, waste rock conveying system includes first belt conveyor and second belt conveyor. The utility model provides a traditional entry driving machine can't cut the hard rock, the problem that only can big gun was dug realizes combining of hard rock, superhard rock roadway and digs, has avoided environmental pollution and personnel in the big gun was dug, and equipment injury has improved tunnelling efficiency, has reduced the tunnelling cost.
Description
Technical Field
The utility model belongs to tunnelling equipment for the colliery, concretely relates to little section shield tunnelling machine for colliery.
Background
Coal mine tunnels are comprehensively considered from the aspects of economy, efficiency, safety, well descending and transition of hard rock heading machines and the like, and the coal mine tunnels are required to be small in diameter, and the diameter is generally less than 3 meters. For many years, key technical problems of hard rock tunneling, simultaneous operation of tunneling and anchoring, one-step section forming, working surface dust removal and the like of coal mines become common problems to be solved urgently in the coal industry. At present, the main equipment for roadway excavation of coal mines is a cantilever type tunneling machine or a continuous miner, which plays a great role in coal roadways and semi-coal-rock roadways; however, in rock roadway excavation, when the single compressive strength of rock is greater than 80MPa, the existing cantilever type tunneling machine at home and abroad is difficult to be applied. Therefore, the research and popularization of the coal mine shield machine which is suitable for the coal mine tunnel excavation with the diameter of less than 3 meters is the requirement and the inevitable trend of the development of the shield machine industry and the coal machine industry, and the requirement of solving the current rapid excavation of the coal enterprises is met. The method has great significance for safely and efficiently tunneling the coal mine and reducing the labor intensity.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a little section shield tunnelling machine for coal mine makes it can be applied to the hard rock tunnelling of diameter 3 meters below to solve the current needs of drivage fast of coal enterprise.
In order to achieve the purpose, the utility model provides a small-section shield tunneling machine for coal mine, which comprises a cutter head, a front shield body, a supporting shoe system, a trailer, a main beam and a gangue conveying system, wherein the cutter head is rotatably connected with the front end of the front shield body, the front shield body is provided with a driving device for driving the cutter head to rotate, the supporting shoe system comprises a saddle and a thrust cylinder for connecting the front end of the saddle with the rear end of the front shield body, the rear end of the saddle is connected with the front end of the trailer, the trailer is provided with a hydraulic system, an electric cabinet, a water system and an operation room, the main beam passes through the saddle, the front end and the rear end of the main beam are respectively connected with the front shield body and the trailer, the front end and the rear end of the main beam are respectively provided with a front support and a rear support, the gangue conveying system comprises a first belt conveyor and a second belt conveyor, the first belt conveyor is installed on the main beam, the second belt conveyor is installed on the trailer, and traveling wheels are arranged on the second belt conveyor.
Furthermore, the cutter head comprises a cutter head body, a first cutter frame, a second cutter frame, a third cutter frame, a fourth cutter frame and a manhole are arranged on the front working surface of the cutter head body, the first cutter frame is positioned at the center of the front working face, a plurality of double-edged hobs are arranged in the first cutter frame, two double-edged hobs are respectively arranged on the second cutter frame and the third cutter frame, and are distributed around the first cutter frame, a double-edged hob is arranged in the second cutter frame, a single-edged hob is arranged in the third cutter frame, a plurality of fourth cutter frames are arranged, and are all distributed on the edge of the front working face, a single-edge hob is installed in the fourth hob frame, a fifth hob frame is arranged on the side surface of the hob body, and a scraper is installed in the fifth knife frame, and slag discharge ports are arranged on one sides of the first knife frame, the second knife frame, the third knife frame, the fourth knife frame and the fifth knife frame.
Furthermore, the cutter head body is formed by splicing a first cutter head body and a second cutter head body, and the first cutter head body is provided with the first cutter frame.
Further, the anterior shield body is including the anterior segment barrel, middle section barrel and the back end barrel that connect gradually, be equipped with the link plate in the anterior segment barrel, the both sides of anterior segment barrel are provided with a steering cylinder respectively, steering cylinder's free end is connected with and turns to the roof, be provided with two mounting brackets that are used for installing the advanced rig at least along circumference in the middle section barrel, the bottom inboard of middle section barrel is equipped with the sediment stuff pump that is used for the drainage, be provided with a plurality of support frames that are used for installing the dust excluding hood along circumference in the back end barrel, the bottom inboard of middle section barrel and back end barrel is equipped with the running-board that supplies the workman to pass.
Further, the preceding shield body still includes one end and is in the gliding adjustable fender in top of back end barrel, adjustable fender follows the extending direction of back end barrel slides, adjustable fender's other end symmetry is provided with two connecting pieces, the upper end of connecting piece with adjustable fender the other end is articulated.
Furthermore, the inside of the top of the rear section cylinder body is relatively provided with two guide pieces, and a sliding groove for the movable baffle to slide is formed between the guide pieces and the inner wall of the rear section cylinder body.
Further, the movable baffle comprises a first plate body and a second plate body, one end of the first plate body is located in the sliding groove, the second plate body is connected with the other end of the first plate body, the second plate body is located on the outer side of the first plate body, and the outer peripheral face of the second plate body is coplanar with the outer peripheral face of the rear section cylinder body.
Further, gangue conveying system still includes third belt conveyor, spiral material loading machine and fourth belt conveyor, third belt conveyor's feed end is located the below of second belt conveyor's discharge end, third belt conveyor is telescopic belt conveyor, third belt conveyor's discharge end is located the feed end of spiral material loading machine, spiral material loading machine's discharge end is located the top of fourth belt conveyor's feed end, fourth belt conveyor's discharge end is equipped with the gangue and transports the dolly.
Furthermore, a sand removing machine is arranged between the spiral feeding machine and the fourth belt conveyor, the feeding end of the sand removing machine is located below the discharging end of the spiral feeding machine, and the discharging end of the sand removing machine is located above the feeding end of the fourth belt conveyor.
Further, the second belt conveyor comprises an inclined conveying part and a horizontal conveying part, and the feeding end of the inclined conveying part is positioned below the discharging end of the first belt conveyor.
The utility model has the advantages that:
1. the problem that a traditional heading machine cannot cut hard rocks and only can dig by blasting is solved, comprehensive digging of hard rocks and superhard rock roadways is realized, and environmental pollution, personnel and equipment injury in blasting digging are avoided.
2. The tunneling efficiency is improved, for example, the tunneling of a certain gas tunnel is carried out by using ① original blasting working face tunneling 120 meters per month, the shield tunneling machine normally tunneling 420 meters per month, the efficiency is improved to 350 percent, ② original blasting man-uniform tunneling footage is 5 meters per month, the shield tunneling machine tunneling 420 meters in 7 months, man-uniform footage is 10 meters per month, the efficiency is improved by 100 percent, ③ full rock tunnel equivalent tunneling progress is 420 meters, the ordinary blasting tunneling needs 84 persons, the shield tunneling machine needs 42 persons, the number of persons is reduced, and the person reduction efficiency is up to 50 percent.
3. The problem that a traditional all-rock roadway can only be dug by blasting is solved, the tunneling efficiency of the all-rock roadway is improved, and the mine deployment pressure is effectively relieved.
4. The shield machine is adopted for tunneling, so that the mechanization level of the whole rock roadway is improved by 100 percent.
5. The safety guarantee is improved. Firstly, the impact of the top plate is reduced, and the integrity of the top plate is effectively protected; secondly, gas accidents caused by blasting are avoided; thirdly, the accident that the rock raking machine hurts people is avoided; and fourthly, potential safety hazards such as post-standing and post-missing are avoided.
6. The tunneling cost of the shield tunneling machine (without considering the influence of geological structure zones) is 300 yuan/m lower than the blasting tunneling cost, the production cost is greatly reduced, the advantage of constructing the all-rock tunnel by adopting the shield method is more obvious, and the shield tunneling method mainly appears on the mechanization degree of all-rock tunneling, the traditional drilling and blasting method process and the safe and clean operation environment.
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 embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a front view of the cutter head of the present invention;
fig. 4 is a bottom view of the cutter head of the present invention;
fig. 5 is a schematic structural view of a cutter head body of the cutter head of the present invention;
FIG. 6 is a front view of the anterior shield body of the present invention;
FIG. 7 is a cross-sectional view taken along the line A-A in FIG. 6;
FIG. 8 is a right side view of the anterior shield of the present invention;
fig. 9 is a left side view of the anterior shield body of the present invention;
FIG. 10 is a top view of the front shoe assembly of the shoe support system of the present invention;
fig. 11 is a left side view of the front shoe assembly of the shoe support system of the present invention;
FIG. 12 is a top view of the rear shoe assembly of the shoe support system of the present invention;
fig. 13 is a right side view of the rear shoe assembly of the shoe support system of the present invention;
fig. 14 is a schematic structural diagram of a sensor assembly of the shoe support system of the present invention;
fig. 15 is a schematic structural view of the main beam of the present invention;
fig. 16 is a schematic structural view of a front support of the main beam of the present invention;
fig. 17 is a schematic structural view of a trailer according to the present invention;
fig. 18 is a partial schematic structural view of the gangue conveying system of the present invention.
Reference numerals:
10-cutter head body, 11-first cutter head body, 12-second cutter head body, 13-first cutter frame, 14-double-edge hob, 15-second cutter frame, 16-third cutter frame, 17-single-edge hob, 18-manhole, 101-fourth cutter frame, 102-fifth cutter frame, 103-scraper, 104-slag discharge port and 105-mist spray nozzle;
20-a front shield body, 21-a front section cylinder body, 211-a gear box connecting disc, 212-a first through hole, 213-a second through hole, 214-a steering oil cylinder, 215-a steering top plate, 22-a middle section cylinder body, 221-a mounting frame, 222-a slurry pump, 23-a rear section cylinder body, 231-a support frame, 232-a pedal plate, 233-a guide piece, 234-a chute, 24-a movable baffle, 241-a first plate body, 242-a second plate body and 25-a connecting piece;
30-shoe supporting system, 31-front shoe supporting component, 311-front saddle, 312-propulsion oil cylinder, 313-front shoe supporting, 314-front shoe supporting oil cylinder, 315-front telescopic beam, 32-rear shoe supporting component, 321-rear saddle, 322-rear shoe supporting, 323-rear shoe supporting oil cylinder, 33-sensor component, 331-displacement sensor, 332-sensor base, 333-sliding rail, 334-sensor bracket, 335-connecting rod, 336-curved rod ball joint bearing and 337-guide rod;
40-main beam, 41-main body frame, 42-front support, 421-upper support foot, 422-lower support foot, 423-front support oil cylinder, 43-rear support, 431-rear support foot and 432-rear support oil cylinder;
50-trailer, 51-vehicle body, 52-connecting beam and 53-thrust wheel;
60-gangue conveying system, 61-first belt conveyor, 62-second belt conveyor, 621-inclined conveying part, 622-horizontal conveying part, 623-travelling wheel, 63-third belt conveyor, 64-spiral feeding machine, 65-sand removing machine and 66-fourth belt conveyor.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
Furthermore, the terms "first," "second," "third," "fourth," "fifth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 18, the present embodiment provides a small-section shield tunneling machine for coal mines, which comprises a cutterhead, a front shield body 20, a supporting shoe system 30, a trailer 50, a main beam 40 and a gangue conveying system 60. The cutter head is rotatably connected with the front end of the front shield body 20, the front shield body 20 is provided with a driving device for driving the cutter head to rotate, and the driving mode can be motor driving or hydraulic motor driving.
The cutter head comprises a cutter head body 10, a first cutter frame 13, a second cutter frame 15, a third cutter frame 16, a fourth cutter frame 101 and a manhole 18 are arranged on the front working face of the cutter head body 10, and the first cutter frame 13 is located at the center of the front working face. A plurality of double-edged hobs 14 are arranged in the first tool frame 13, and due to the small diameter of the cutter head body 10, too many double-edged hobs 14 are not suitable to be arranged in the first tool frame 13, and preferably, one double-edged hob 14 is arranged in the first tool frame 13. A plurality of mist nozzles 15 are arranged around the first knife frame 13 at intervals, and in the embodiment, the mist nozzles 15 are distributed around the first knife frame 13 at the center of the knife disc body 10, so that mud cakes in the center area of the knife disc can be effectively removed. Second sword frame 15 with third sword frame 16 is provided with two respectively, and all winds first sword frame 13 distributes, install twolip hobbing cutter 14 in the second sword frame 15, install twolip hobbing cutter 17 in the third sword frame 16, fourth sword frame 101 is provided with a plurality ofly, and all distributes the border of preceding working face, install twolip hobbing cutter 17 in the fourth sword frame 101, open the side of cutter head body 10 has fifth sword frame 102, install scraper 103 in the fifth sword frame 102, one side of first sword frame 13, second sword frame 15, third sword frame 16, fourth sword frame 101 and fifth sword frame 102 all is equipped with row cinder notch 104.
Preferably, the cutter head body 10 is formed by splicing a first cutter head body 11 and a second cutter head body 12, and the first cutter frame 13 is arranged on the first cutter head body 11. By providing the cutter head body 10 in two large and small portions, the first cutter head body 11 and the second cutter head body 12 are connected together by high-strength bolts, which facilitates disassembly and transportation.
The front shield body 20 comprises a front section cylinder 21, a middle section cylinder 22 and a rear section cylinder 23 which are connected in sequence. Anterior segment barrel 21, middle section barrel 22 and back end barrel 23 are all formed by two semi-cylindrical platelike casings through high strength bolted connection respectively, also through high strength bolted connection between front end barrel and middle section barrel 22, middle section barrel 22 and the back end barrel 23, are convenient for like this send into the tunnel from ground and assemble.
The front section cylinder 21 is provided with a first through hole 212 for the upper supporting leg 421 of the front support 42 to pass through and a second through hole 213 for the lower supporting leg 422 of the front support 42 to pass through, the number of the first through holes 212 is one, and the number of the second through holes 213 is two, so that the front support 42 can play a role. A gear box connecting disc 211 used for installing a gear box is arranged in the front section cylinder 21, the rear end of the cutter head is rotatably arranged in the gear box connecting disc 211, a plurality of gear boxes are arranged on the gear box connecting disc 211 along the circumferential direction, and the gear boxes can be driven by a motor or a hydraulic motor. Two sides of the front section cylinder 21 are respectively provided with a steering oil cylinder 214, the free end of the steering oil cylinder 214 is connected with a steering top plate 215, when the front shield 20 needs to adjust the direction, the free end of the steering oil cylinder 214 extends out, and the steering top plate 215 is propped against the inner wall of a tunnel excavated out, so that the tunneling direction of the cutterhead is controlled.
At least two mounting frames 221 for mounting the pilot drill are arranged in the middle section cylinder 22 along the circumferential direction. The bottom inner side of the middle section cylinder 22 is provided with a slurry pump 222 for draining water, the slurry pump 222 is connected with a slurry pipeline, slurry generated in the rock cutting process is discharged through the slurry pump 222, and the cut gangue is discharged through a belt type conveying system.
A plurality of support frames 231 for mounting a dust hood are circumferentially arranged in the rear section cylinder 23, preferably three support frames 231 are uniformly circumferentially arranged, a main beam 40 of the shield tunneling machine penetrates through the dust hood, and a belt conveyor for transporting gangue is mounted on the main beam 40. The inner sides of the bottoms of the middle-stage cylinder 22 and the rear-stage cylinder 23 are provided with foot pedals 232 through which workers pass. The front shield body 20 in this embodiment has a simple structure and a small volume, and is very suitable for tunneling a roadway with a diameter of less than 3 m.
The front shield body 20 further comprises a movable baffle plate 24 with one end sliding on the top of the rear section cylinder 23, the movable baffle plate 24 slides along the extending direction of the rear section cylinder 23, two connecting pieces 25 are symmetrically arranged at the other end of the movable baffle plate 24, and the upper end of each connecting piece 25 is hinged to the other end of the corresponding movable baffle plate 24. A flapper 24 is provided for adjusting the clearance distance depending on the roof conditions downhole.
Two guide pieces 233 are oppositely arranged on the inner side of the top of the rear section cylinder 23, and a sliding groove 234 for the movable baffle plate 24 to slide is formed between the guide pieces 233 and the inner wall of the rear section cylinder 23. By providing the guide 233, the slide groove 234 for the shutter 24 to slide can be formed easily and conveniently, and the assembly and disassembly are facilitated.
The flapper 24 includes a first plate 241 having one end sliding in the slide groove 234 and a second plate 242 connected to the other end of the first plate 241, the second plate 242 is located outside the first plate 241, and the outer circumferential surface of the second plate 242 is coplanar with the outer circumferential surface of the rear cylinder 23. The outer diameter of the movable baffle 24 is the same as that of the front section cylinder 21, the middle section cylinder 22 and the rear section cylinder 23, and the outer diameter of the movable baffle is matched with the diameter of a roadway to be tunneled, so that the forward shield body 20 is guaranteed to move smoothly.
The shoe system 30 includes a saddle, the rear end of which is connected to the front end of the trailer 50, and a propulsion cylinder 312 connecting the front end of the saddle to the rear end of the front shield body 20. Specifically, a front shoe assembly 31 and a rear shoe assembly 32 are included.
The front supporting shoe assembly 31 comprises a front saddle 311, a propulsion cylinder 312, a front supporting shoe 313, a front supporting shoe cylinder 314 and a front telescopic beam 315, wherein the front end of the front saddle 311 is hinged with a plurality of the propulsion cylinders 312, and the number of the cylinders is preferably four. The two sides of the front saddle 311 are respectively provided with one front supporting shoe 313, the front supporting shoe 313 is connected with the front saddle 311 through the front supporting shoe oil cylinder 314, preferably, the front supporting shoe 313 is connected with the front saddle 311 through four front supporting shoe oil cylinders 314 distributed around the circumference of the front telescopic girder 315, and thus, the structure is stable. The length of the front telescopic girder 315 is adjustable, and both ends of the front telescopic girder are respectively connected with the front support shoe 313 and the front saddle 311, and the front telescopic girder 315 is used for guiding the movement of the front support shoe 313.
The rear shoe supporting assembly 32 comprises a rear saddle 321, a rear shoe supporting 322, a rear shoe supporting cylinder 323 and a rear telescopic beam, wherein the front end of the rear saddle 321 is hinged with the rear end of the front saddle 311, two sides of the rear saddle 321 are respectively provided with the rear shoe supporting 322, the rear shoe supporting 322 is connected with the rear saddle 321 through the rear shoe supporting cylinder 323, preferably, the rear shoe supporting 322 is connected with the rear saddle 321 through four rear shoe supporting cylinders 323 distributed around the circumference of the rear telescopic beam, and thus, the structure is stable. The length of the rear telescopic beam is adjustable, two ends of the rear telescopic beam are respectively connected with the rear support shoes 322 and the rear saddle frame 321, and the rear telescopic beam is used for guiding the movement of the rear support shoes 322. Both the front saddle 311 and the rear saddle 321 are provided with a passage through which the belt conveyor passes.
The displacement sensor 331 assembly 33 further comprises a guide rod 337 arranged parallel to the slide rail 333, the guide rod 337 is arranged on the base, and the guide rod 337 passes through the sensor bracket 334 and keeps a sliding fit with the sensor bracket 334, so that the sensor bracket 334 is not easy to slide off the slide rail 333.
One end of the connecting rod 335 is connected to the sensor bracket 334 through a knee ball joint bearing 336, and the other end is connected to the front shoe 313 or the rear shoe 322 through another knee ball joint bearing 336. By means of the arrangement, the phenomenon of deflection generated in the process of unfolding or folding the front supporting shoe 313 or the rear supporting shoe 322 can be well adapted, and the connecting rod 335 is prevented from being damaged.
The main beam 40 includes a main frame 41, a front support 42 and a rear support 43 respectively disposed at the front and rear ends of the main frame 41, and the main frame 41 passes through the saddle and is slidably connected to the saddle. The front support 42 includes an upper support foot 421 and two lower support feet 422, and the upper support foot 421 and the lower support feet 422 are respectively connected to the front section of the main beam 40 through a front support cylinder 423. The rear support 43 comprises a rear support foot 431 and a rear support oil cylinder 432, the upper end of the rear support foot 431 is hinged with the rear end of the main beam 40, two ends of the rear support oil cylinder 432 are respectively hinged with the rear end of the main beam 40 and the lower end of the rear support foot 431, and the extension or retraction of the rear support foot 431 can be realized by the extension and contraction of a piston rod of the rear support oil cylinder 432.
The trailer 50 is provided with a hydraulic system, an electric cabinet, a water system, an operation room, a hydraulic winch and the like. The hydraulic support comprises a vehicle body 51, a connecting beam 52 and supporting wheels 53, wherein the front end of the vehicle body 51 is hinged with the rear end of a main body frame 41 through the connecting beam 52, and the bottom of the vehicle body 51 is provided with the supporting wheels 53 for supporting the vehicle body 51 and the hydraulic system, the electric cabinet, the water system, the operating room, the hydraulic winch and the like thereon.
The gangue conveying system 60 comprises a first belt conveyor 61 and a second belt conveyor 62 which are sequentially arranged along the gangue conveying direction, the first belt conveyor 61 is installed on the main beam 40, the second belt conveyor 62 is installed on the trailer 50, and traveling wheels 623 are arranged on the second belt conveyor 62.
The gangue conveying system 60 further comprises a third belt conveyor 63, a spiral feeding machine 64 and a fourth belt conveyor 66, the feeding end of the third belt conveyor 63 is located below the discharging end of the second belt conveyor 62, the third belt conveyor 63 is a telescopic belt conveyor, the discharging end of the third belt conveyor 63 is located at the feeding end of the spiral feeding machine 64, the discharging end of the spiral feeding machine 64 is located above the feeding end of the fourth belt conveyor 66, and the discharging end of the fourth belt conveyor 66 is provided with a gangue transfer trolley. Since the second belt conveyor 62 advances with the shield tunneling machine and the spiral feeder 64 is fixed in the tunnel, the length of the third belt conveyor 63 is automatically changed, thereby ensuring that the gangue is smoothly conveyed from the second belt conveyor 62 to the spiral feeder 64. The waste rock conveying system 60 of the embodiment is adopted to convey waste rocks, the defects of a traditional waste rock discharging mode of' a slurry pump 222+ a pipeline are avoided, and the problems that packing leakage is easy to occur to the slurry pump 222, a discharge port is smaller than a feeding port, an impeller is abraded, and the like cause pump or pipeline blockage, and when lithology changes, the amount of the waste rocks is large, the subsequent handling capacity is large, and the space is limited are solved.
A sand removing machine 65 is arranged between the spiral feeding machine 64 and the fourth belt conveyor 66, the feeding end of the sand removing machine 65 is positioned below the discharging end of the spiral feeding machine 64, and the discharging end of the sand removing machine 65 is positioned above the feeding end of the fourth belt conveyor 66. The sand remover 65 is used to remove and collect sand from the gangue, which can be used in construction work, so that the profit can be increased appropriately.
The second belt conveyor 62 includes an inclined conveying portion 621 and a horizontal conveying portion 622, and the feed end of the inclined conveying portion 621 is located below the discharge end of the first belt conveyor 61. The lower end of the inclined conveying section 621 is arranged to receive the gangue on the first belt conveyor 61 and to convey it upwards to the horizontal conveying section 622, which reduces the space taken up by the entire conveying system compared to an overall horizontal arrangement.
In the small-section shield tunneling machine for the coal mine in the embodiment, the outer diameter of the whole machine is within 3M, such as 2.8M, and the small-section shield tunneling machine is suitable for tunneling hard rock tunnels with the diameter of less than 3M. Specifically, the cutterhead rotates and the cut hard rock pieces (i.e., gangue) are transported away by a gangue transport system 60 consisting of a first belt conveyor 61, a second belt conveyor 62 and other transport devices. The cutter head is tunneled forwards under the action of the propulsion oil cylinder 312, the feeding cycle of the cutter head is 1 meter each time, after the feeding is finished, the propulsion display on the display screen in the operation room turns red and stops the feeding, the cutter head feeding and backing switch is switched to the backing position, the cutter head continuously backs for 20mm and stops the propulsion, the cutter head continuously runs for delivery, and after the first belt conveyor 61 is observed for delivering clean goods, the cutter head forward and reverse switch is switched to the stopping position. Aiming at different rock hardness, different working face gradient and slag discharge conditions, the tunneling speed, the propelling pressure and the cutter head revolution can be set so as to achieve the best working effect. The setting of the above parameters is done in the remote control system. During the feeding process, the shoe system 30 is operated, the front support 42 and the rear support 43 on the main beam 40 are retracted, and the propulsion cylinder 312 propels the cutterhead, the front shield body 20, the main beam 40, the trailer 50 and the like together. After the feeding is stopped, the front support 42 and the rear support 43 extend to be supported on the inner wall of the roadway, the supporting shoes in the supporting shoe system 30 are retracted, the propulsion oil cylinders 312 are contracted to drive the supporting shoe system 30 to move forwards, and thus, a feeding period is completed.
The utility model discloses a small cross section shield tunnelling machine for coal mine still is provided with dust pelletizing system and laser guidance system etc..
In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (10)
1. The utility model provides a little section shield tunnelling machine for coal mine which characterized in that: comprises a cutter head, a front shield body (20), a supporting shoe system (30), a trailer (50), a main beam (40) and a gangue conveying system (60), wherein the cutter head is rotationally connected with the front end of the front shield body (20), the front shield body (20) is provided with a driving device for driving the cutter head to rotate, the supporting shoe system (30) comprises a saddle and a propulsion oil cylinder (312) for connecting the front end of the saddle with the rear end of the front shield body (20), the rear end of the saddle is connected with the front end of the trailer (50), the trailer (50) is provided with a hydraulic system, an electric cabinet, a water system and an operating room, the main beam (40) penetrates through the saddle, the front end and the rear end of the main beam (40) are respectively connected with the front shield body (20) and the trailer (50), the front end and the rear end of the main beam (40) are respectively provided with a front support (42) and a rear support (43), waste rock conveying system (60) includes first belt conveyor (61) and second belt conveyor (62), first belt conveyor (61) are installed on girder (40), second belt conveyor (62) are installed on trailer (50), be provided with walking wheel (623) on second belt conveyor (62).
2. The small face shield tunneling machine for coal mines of claim 1, wherein: the cutter head comprises a cutter head body (10), a first cutter frame (13), a second cutter frame (15), a third cutter frame (16), a fourth cutter frame (101) and a manhole (18) are arranged on a front working face of the cutter head body (10), the first cutter frame (13) is located at the center of the front working face, a plurality of double-edge hobs (14) are installed in the first cutter frame (13), the second cutter frame (15) and the third cutter frame (16) are respectively provided with two cutters and are wound around the first cutter frame (13) to be distributed, the double-edge hobs (14) are installed in the second cutter frame (15), single-edge hobs (17) are installed in the third cutter frame (16), the fourth cutter frame (101) is provided with a plurality of cutters and is distributed at the edge of the front working face, the single-edge hobs (17) are installed in the fourth cutter frame (101), a fifth cutter frame (102) is arranged on the side face of the cutter head body (10), a scraper (103) is installed in the fifth knife frame (102), and slag discharge ports (104) are arranged on one sides of the first knife frame (13), the second knife frame (15), the third knife frame (16), the fourth knife frame (101) and the fifth knife frame (102).
3. The small face shield tunneling machine for coal mines of claim 2, wherein: the cutter head body (10) is formed by splicing a first cutter head body (11) and a second cutter head body (12), and the first cutter frame (13) is arranged on the first cutter head body (11).
4. The small face shield tunneling machine for coal mines of claim 1, wherein: preceding shield body (20) are including anterior segment barrel (21), middle section barrel (22) and back end barrel (23) that connect gradually, be equipped with coupling disc (211) in anterior segment barrel (21), the both sides of anterior segment barrel (21) are provided with a steering cylinder (214) respectively, the free end that turns to cylinder (214) is connected with and turns to roof (215), be provided with two mounting bracket (221) that are used for installing the leading rig at least along circumference in middle section barrel (22), the bottom inboard of middle section barrel (22) is equipped with sediment stuff pump (222) that are used for the drainage, be provided with a plurality of support frames (231) that are used for installing the dust excluding hood along circumference in back end barrel (23), the bottom inboard of middle section barrel (22) and back end barrel (23) is equipped with the running-board (232) that supplies the workman to pass.
5. The small face shield tunneling machine for coal mines of claim 4, wherein: preceding shield body (20) still include one end and are in the gliding adjustable fender (24) in top of back end barrel (23), adjustable fender (24) are followed the extending direction of back end barrel (23) slides, the other end symmetry of adjustable fender (24) is provided with two connecting pieces (25), the upper end of connecting piece (25) with adjustable fender (24) the other end is articulated.
6. The small face shield tunneling machine for coal mines of claim 5, wherein: two guide pieces (233) are oppositely arranged on the inner side of the top of the rear section cylinder body (23), and a sliding groove (234) for the movable baffle (24) to slide is formed between the guide pieces (233) and the inner wall of the rear section cylinder body (23).
7. The small face shield tunneling machine for coal mines of claim 6, wherein: the movable baffle (24) comprises a first plate body (241) with one end sliding in the sliding groove (234) and a second plate body (242) connected with the other end of the first plate body (241), the second plate body (242) is located on the outer side of the first plate body (241), and the outer peripheral surface of the second plate body (242) is coplanar with the outer peripheral surface of the rear section cylinder body (23).
8. The small face shield tunneling machine for coal mines of claim 1, wherein: waste rock conveying system (60) still includes third belt conveyor (63), spiral material loading machine (64) and fourth belt conveyor (66), the feed end of third belt conveyor (63) is located the below of the discharge end of second belt conveyor (62), third belt conveyor (63) is telescopic belt conveyor, the discharge end of third belt conveyor (63) is located the feed end of spiral material loading machine (64), the discharge end of spiral material loading machine (64) is located the top of the feed end of fourth belt conveyor (66), the discharge end of fourth belt conveyor (66) is equipped with the waste rock transportation dolly.
9. The small face shield tunneling machine for coal mines of claim 8, wherein: spiral material loading machine (64) with be equipped with sand removing machine (65) between fourth belt conveyor (66), the feed end of sand removing machine (65) with be located the below of the discharge end of spiral material loading machine (64), the discharge end of sand removing machine (65) is located the top of the feed end of fourth belt conveyor (66).
10. The small face shield tunneling machine for coal mines of claim 9, wherein: the second belt conveyor (62) comprises an inclined conveying part (621) and a horizontal conveying part (622), and the feeding end of the inclined conveying part (621) is positioned below the discharging end of the first belt conveyor (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921001293.XU CN210317319U (en) | 2019-06-28 | 2019-06-28 | Small-section shield tunneling machine for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921001293.XU CN210317319U (en) | 2019-06-28 | 2019-06-28 | Small-section shield tunneling machine for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317319U true CN210317319U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921001293.XU Expired - Fee Related CN210317319U (en) | 2019-06-28 | 2019-06-28 | Small-section shield tunneling machine for coal mine |
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| Country | Link |
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| CN (1) | CN210317319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159289A (en) * | 2019-06-28 | 2019-08-23 | 重庆市能源投资集团科技有限责任公司 | A kind of coal mine light section shield excavation machine |
-
2019
- 2019-06-28 CN CN201921001293.XU patent/CN210317319U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159289A (en) * | 2019-06-28 | 2019-08-23 | 重庆市能源投资集团科技有限责任公司 | A kind of coal mine light section shield excavation machine |
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