CN214217155U

CN214217155U - Scraper conveyor for mining steep-dip extremely-thin coal seam

Info

Publication number: CN214217155U
Application number: CN202022253871.8U
Authority: CN
Inventors: 郭臣业; 黄昌文; 李文树; 陈朝鲜; 赵宁德; 侯光奎; 陈均浩; 许刚; 刘朝富; 王小岑; 张晓波; 杨光林; 毛迅; 胡勇; 许增亮; 刘向东; 游祖峰; 龙雯
Original assignee: Chongqing Neng Touyu New Energy Co ltd; CHONGQING ENERGY INVESTMENT GROUP TECHNOLOGY CO LTD
Current assignee: Chongqing Neng Touyu New Energy Co ltd; CHONGQING ENERGY INVESTMENT GROUP TECHNOLOGY CO LTD
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-09-17
Anticipated expiration: 2030-10-12

Abstract

The utility model belongs to the technical field of coal mining equipment, a scraper conveyor for mining of steeply inclined extremely thin coal seam is provided, include: the middle groove comprises a transition groove group and a middle groove group, the two transition groove groups are arranged oppositely, the middle groove groups are sequentially arranged between the two transition grooves at intervals, and the machine head transmission part is arranged at one end of the middle groove; the tail transmission part is arranged at the other end of the middle groove; and the scraper chain assembly is arranged between the middle grooves, and two ends of the scraper chain assembly are respectively in transmission connection with the machine head transmission part and the machine tail transmission part. The utility model provides a scraper conveyor for mining of steeply inclined extremely thin coal seam is applicable to the steeply inclined extremely thin coal seam.

Description

Scraper conveyor for mining steep-dip extremely-thin coal seam

Technical Field

The utility model relates to a coal mining equipment technical field, concretely relates to scraper conveyor for mining of steeply inclined extremely thin coal seam.

Background

In the coal mining production of China, the development of medium and thick coal seam mining is leap and leap, and the international advanced level is basically reached. The development of ultra-thin coal seam mining is relatively slow. At present, the mining process of the ultra-thin coal seam is laggard, the yield is low, and the working strength of workers is high. Particularly in the coal seam of 0.6-0.8 m, the mechanization degree is very low at present, so that the development of novel, high-reliability and high-applicability ultra-thin coal seam mining equipment is very necessary for coal mine development. Due to the special geological conditions of mining of the ultra-thin coal seam, the space is very small, mining equipment is required to be flexible and changeable, and the replaceability is stronger.

However, the conventional scraper conveyor has problems that: due to the limitation of the matching structure and the positioning mode of the toothed rail (pin column) and the coal mining machine, the integral height of the comprehensive coal mining equipment is difficult to meet the requirement of a working surface of an extremely thin coal seam, so that the comprehensive coal mining equipment is not suitable for the extremely thin coal seam with a steep inclination.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a scraper conveyor for mining of steeply inclined extremely thin coal seam makes it be applicable to steeply inclined extremely thin coal seam.

In order to achieve the above object, the utility model provides a scraper conveyor for mining of steeply inclined extremely thin coal seam, include:

middle part groove, it includes:

the transition groove groups are oppositely arranged and comprise transition groove bodies, a first rack is arranged on the coal wall side of each transition groove body and comprises a plurality of first pin columns which are sequentially arranged along the length direction of each transition groove body at intervals, the pin columns are in a cantilever form and are integrally formed with the transition groove bodies, two first bridging guide pipes are arranged on the operation side of each transition groove body, and the two first bridging guide pipes are sequentially arranged along the length direction of each transition groove body at intervals; and

the middle trough group comprises a middle trough body, a second rack rail is arranged on the coal wall side of the middle trough body and comprises a plurality of second pin columns which are sequentially arranged at intervals along the length direction of the middle trough body, the second pin columns are in a cantilever form and are integrally formed with the middle trough body, two second bridging guide pipes are arranged on the operation side of the middle trough body, and the two second bridging guide pipes are sequentially arranged at intervals along the length direction of the middle trough body;

the machine head transmission part is arranged at one end of the middle groove;

the tail transmission part is arranged at the other end of the middle groove; and

and the scraper chain assembly is arranged on the middle groove, and two ends of the scraper chain assembly are respectively in transmission connection with the machine head transmission part and the machine tail transmission part.

Further, the head transmission portion includes:

a headstock;

a first sprocket set disposed at an end of the headstock remote from the central slot,

a first chain divider disposed on a side of the first sprocket set facing the center groove; and

the first power part is arranged on one side of the machine head frame and is used for driving the first chain wheel set to rotate.

Further, the tail transmission part includes:

a tailstock;

a second chain wheel set arranged at one end of the tail frame far away from the middle groove,

a second chain splitter disposed on a side of the second sprocket set facing the center groove; and

and the second power part is arranged on one side of the tail frame and is used for driving the second chain wheel set to rotate.

Further, the scraper chain assembly comprises:

the two scraper chains are oppositely arranged, and two ends of each scraper chain are respectively in transmission connection with the machine head transmission part and the machine tail transmission part;

the scraper plates are arranged along the length direction of the scraper chain at intervals in sequence, and any one of the scraper plates is fixedly connected with the scraper chain.

The scraper chain driving device comprises a middle groove, a machine head transmission part and scraper chain blocking devices, wherein the middle groove is arranged at the front end of the machine head transmission part, and the scraper chain blocking devices are arranged at the front end of the middle groove and are used for blocking the scraper chain.

Further, the first chain wheel set comprises a mandrel, a chain wheel, rollers, screw plugs, bearings, bearing seats and bearing end covers, the chain wheel is arranged in the middle of the mandrel and connected with the mandrel through a first transmission key, the two rollers are respectively arranged on two sides of the chain wheel and connected with the mandrel through a second transmission key, an oil cavity is arranged on the inner side of the roller and communicated with a gap between the chain wheel and the mandrel, a plurality of engine oil adding holes are formed in the roller, the screw plugs are used for sealing the engine oil adding holes, the two bearings are respectively arranged on one sides of the two rollers, which are deviated from each other, and connected with the mandrel, the two bearing seats are respectively sleeved on the two bearings and rotatably connected with the roller, the bearing seats are provided with oil ducts, and the oil ducts are used for transferring the engine oil in the engine oil cavity to the bearings, the two bearing end covers are respectively arranged on one sides of the two bearing seats, which are deviated from each other, and are connected with the bearing seats through bolts.

Further, first power portion includes explosion-proof type motor, elasticity plum blossom shaft coupling, stopper and speed reducer, the power input end of elasticity plum blossom shaft coupling with the power take off end of explosion-proof type motor is connected, the stopper sets up deviating from of elasticity plum blossom shaft coupling one side of sprocket group, the power input end of speed reducer with the power take off end of elasticity plum blossom shaft coupling is connected, the power take off end of speed reducer with the power input end of sprocket group is connected.

The utility model has the advantages that:

the utility model provides a scraper conveyor for mining of steeply inclined extremely thin coal seam is through passing through the bridge structural connection with scraper conveyor and coal-winning machine to set up first rack and middle part cell body, second rack and transition cell body into the integrated into one piece structure, thereby effectively reduced the height of synthesizing coal mining equipment, thereby be applicable to the exploitation in the steeply inclined extremely thin coal seam.

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 a scraper conveyor for mining a steeply inclined extremely thin coal seam according to an embodiment of the present invention;

FIG. 2 is a top view of the face conveyor shown in FIG. 1;

FIG. 3 is a front view of a transition groove set of the face conveyor of FIG. 1;

FIG. 4 is a left side view of the transition groove set shown in FIG. 3;

FIG. 5 is a top view of the transition groove set shown in FIG. 3;

FIG. 6 is a front view of a middle slot set of the face conveyor of FIG. 1;

FIG. 7 is a top view of the transition groove set shown in FIG. 6;

FIG. 8 is a left side view of the transition groove set shown in FIG. 6;

FIG. 9 is a front view of a nose drive section of the face conveyor shown in FIG. 1;

FIG. 10 is a top view of the head drive section shown in FIG. 9;

FIG. 11 is a cross-sectional view taken along line A-A of FIG. 9;

FIG. 12 is a cross-sectional view of a sprocket set of the scraper conveyor shown in FIG. 1;

FIG. 13 is an enlarged view of FIG. 12 at B

Fig. 14 is a plan view of the scraper conveyor shown in fig. 1, namely, a transmission portion.

Reference numerals:

1000-middle groove, 1100-transition groove group 1100, 1110-transition groove body, 1120-first middle plate, 1130-first bottom plate, 1140-first rack rail, 1141-first pin column, 1150-first bridging guide pipe, 1160-first positioning pin, 1161-first U-shaped clamp, 1170-connecting part, 1200-middle groove group, 1210-middle groove body, 1220-second middle plate, 1230-second bottom plate, 1240-second rack rail, 1241-second pin column, 1250-second bridging guide pipe, 1260-second positioning pin, 1270-second U-shaped clamp, 1280-dumbbell connecting hole, 1290-dumbbell connecting part, 2000-head transmission part, 2100-head frame, 2200-first chain wheel group, 2210-mandrel, 2211-first transmission key, 2212-second transmission key, 2220-chain wheel, 2230-roller, 2240-plug screw, 2250-bearing, 2260-bearing seat, 2270-bearing end cover, 2201-engine oil cavity, 2202-engine oil adding hole, 2203-oil duct, 2204-first O-shaped ring, 2205-floating seal ring group, 2206-second O-shaped ring, 2207-shaft elastic retainer ring, 2208-oil seal, 2209-distance sleeve, 2300-first chain divider, 2400-first power part, 2410-explosion-proof motor, 2420-elastic plum blossom coupling, 2430-brake, 2440-speed reducer, 2500-connecting plate, 2510-positioning key, 2600-guard plate, 2700-limiting block, 3000-tail transmission part, 3100-tail frame, 3200-second chain wheel group, 3300-second chain divider, 3400-second power part, 4000-flight chain assembly, 4100-flight chain, 4200-flight, 5000-chain stopper.

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", etc. 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. 1-14, the utility model provides a scraper conveyor for mining of steeply inclined extremely thin coal seam, including middle part groove 1000, aircraft nose drive 2000, tail drive 3000 and scraper chain subassembly 4000.

Wherein the middle slot 1000 includes two transition slot sets 1100 and a plurality of middle slot sets 1200. The middle trough 1000 is connected with a coal mining machine through a gap bridge structure. The body of the coal mining machine is arranged in parallel with the conveyor, so that the overall height can be reduced.

Two transition groove sets 1100 are oppositely disposed. Transition slot set 1100 includes transition slot 1110.

Specifically, the length of the transition groove body 1110 is 1500mm, the total width is 630mm meters, the groove width is 520mm, the thickness of the first middle plate 1120 is 20mm, and the thickness of the first bottom plate 1130 is 10 mm.

The first rack 1140 is arranged on the coal wall side of the transition trough body 1110, and the rack moment can be reduced by arranging the first rack 1140 on the coal wall side of the transition trough body 1110.

First rack 1140 includes a plurality of first round pin posts 1141 that set up along transition cell body 1110 length direction at interval in proper order, and first round pin post 1141 adopts cantilever form and with transition cell body 1110 integrated into one piece, preferably, the downside of first round pin post 1141 is provided with the strengthening rib that is used for strengthening its intensity. By integrally casting the first rack 1140 with the transition trough body 1110, the height of the transition trough can be effectively lowered.

Specifically, the coal wall sides of the first pins 1141 are independent from each other, that is, the coal wall sides of the first pins 1141 are not connected to each other, so that the problem of coal blocking in the rack can be effectively solved.

Two first intermediate ducts 1150 are installed on the operation side of the transition groove body 1110, and the two first intermediate ducts 1150 are sequentially arranged at intervals along the length direction of the transition groove body 1110. The first gap bridge guide pipe 1150 is connected with a gap bridge of a coal mining machine and used for guiding, and the structure is simple and the resistance is small.

Specifically, the transition groove body 1110 is connected with the first bridging conduit 1150 through a bolt, a first positioning pin 1160 is arranged on the operation side of the transition groove body 1110, wherein the first positioning pin 1160 and the first transition groove body 1110 are integrally formed, the first positioning pin 1160 is used for positioning the first bridging conduit 1150, a first U-shaped card 1161 is arranged between the first positioning pin 1160 and the transition groove body 1110, specifically, the first U-shaped card 1161 is a KJ10U type card, and the manufacturing material is 65 Mn.

This configuration may enable quick positioning and connection of first conduit 1150 and transition channel 1110 to facilitate bolting.

Specifically, one side connection portion 1170 of the transition groove body 1110 facing the middle groove group 1200, specifically, the connection portion 1170 is a dumbbell connection hole or a dumbbell connection pin. Therefore, the transition slot group 1100 and the middle slot group 1200 can be quickly positioned and connected through the dumbbell structure.

A plurality of middle groove groups 1200 are sequentially arranged between the two transition groove groups 1100 at intervals.

The middle groove group 1200 includes a middle groove body 1210, specifically, the length of the middle groove body 1210 is 1500mm, the total width is 630mm meters, the height is 170mm, the groove width is 520mm, the thickness of the second middle plate 1220 is 20mm, and the thickness of the second bottom plate 1230 is 10 mm.

Wherein, the coal wall side of the middle trough body 1210 is provided with a second rack 1240, and the rack moment can be reduced by arranging the second rack 1240 on the coal wall side of the middle trough 1000.

The second rack 1240 includes a plurality of second round pin 1241 that set up along middle part cell body 1210 length direction interval in proper order, and second round pin 1241 adopts the cantilever form and with middle part cell body 1210 integrated into one piece, and preferably, the bottom of second round pin 1241 is provided with the strengthening rib that increases round pin intensity, and the strengthening rib is triangle-shaped. The height of the central groove 1000 can be effectively lowered by casting the rack integrally with the central groove body 1210. Specifically, the coal wall sides of the second pins 1241 are independent of each other, that is, the coal wall sides of the second pins 1241 are not connected to each other, so that the problem of coal blocking of the rack can be effectively solved.

Two second bridging guide pipes 1250 are installed on the operation side of the middle groove body 1210, and the two second bridging guide pipes 1250 are sequentially arranged at intervals along the length direction of the middle groove body 1210. The gap bridge guide pipe is connected with a gap bridge of the coal mining machine and used for guiding, and the structure is simple and the resistance is small.

Specifically, the middle groove body 1210 is connected with the second intermediate conduit 1250 through a bolt, a second positioning pin 1260 is arranged on the operation side of the middle groove body 1210, wherein the second positioning pin 1260 and the middle groove body 1210 are integrally formed, the second positioning pin 1260 is used for positioning the second intermediate conduit 1250, a second U-shaped card 1270 is arranged between the second positioning pin 1260 and the middle groove body 1210, specifically, the second U-shaped card 1270 is a KJ10U type card, and the manufacturing material is 65 Mn.

This configuration allows for quick positioning and attachment of the second conduit 1250 and the central channel 1210 to facilitate bolting.

Specifically, the front side and the rear side of the middle groove body 1210 are respectively provided with a dumbbell connecting hole 1280 and a dumbbell connecting part 1290 which are matched with each other. Thus, the front and rear middle cell groups 1200 can be quickly positioned and connected with each other through the dumbbell structure.

A head transmission part 2000, the head transmission part 2000 being disposed at one end of the middle groove 1000; a tail transmission part 3000 disposed at the other end of the middle tank 1000; and

and the scraper chain assembly 4000 is arranged on the middle groove 1000, and two ends of the scraper chain assembly are in transmission connection with the machine head transmission part 2000 and the machine tail transmission part 3000 respectively.

In one embodiment, the handpiece power train 2000 includes:

a head frame 2100;

a first sprocket set 2200 disposed at an end of the head frame 2100 remote from the central groove 1000,

a first chain divider 2300 disposed at a side of the first sprocket set 2200 facing the central groove 1000; and

a first power portion 2400, disposed on one side of the head frame 2100, for driving the first sprocket set 2200 to rotate.

In one embodiment, the tail drive 3000 includes:

a tail frame 3100;

a second sprocket group 3200 disposed at an end of the tail frame 3100 distal from the central slot 1000,

a second chain splitter 3300 provided at a side of the second sprocket group 3200 facing the central groove 1000; and

and a second power part 3400 provided at one side of the tail frame 3100, for driving the second sprocket group 3200 to rotate.

In one embodiment, scraper chain assembly 4000 comprises:

the two scraper chains 4100 are oppositely arranged, and two ends of the two scraper chains 4100 are respectively in transmission connection with the machine head transmission part 2000 and the machine tail transmission part 3000;

the scraper plates 4200 are sequentially arranged at intervals along the length direction of the scraper chain, and any scraper plate 4200 is fixedly connected with the two scraper chains.

Wherein the specification of the scraper chain is

18×64mm。

In one embodiment, a chain stopper 5000 is further included, and two chain stoppers 5000 are disposed at an end of the middle groove 1000 facing the head driving part 2000, and are respectively used for stopping two scraper chains.

In one embodiment, the first sprocket set 2200 includes a spindle 2210, a sprocket 2220, a roller 2230, a plug 2240, a bearing 2250, a bearing housing 2260, and a bearing end cover 2270.

A sprocket 2220 is mounted in the middle of spindle 2210 and is drivingly connected to spindle 2210 through a first drive key 2211. Compared with the transmission connection through interference fit, the transmission connection through the transmission key has the advantages of convenience in disassembly, long service life and the like. Specifically, the mandrel 2210 is made of 40Cr and the sprocket 2220 is made of 42 CrMo. The first driving key 2211 is made of 45# steel, has the size of 28 x 200mm, and is two in number.

Wherein the number of the rollers 2230 is two, and the two rollers 2230 are respectively installed at both sides of the sprocket 2220 and connected with the spindle 2210 through the second driving key 2212. And an organic oil chamber 2201 is arranged inside the roller 2230. Specifically, the roller 2230 is made of 40 Cr. The second driving key 2212 is made of 45# steel and has the size of 14 x 30 mm.

Oil chamber 2201 communicates with the gap between sprocket 2220 and spindle 2210 so that oil in oil chamber 2201 can flow into the gap between sprocket 2220 and spindle 2210 to lubricate them.

A plurality of oil supply holes 2202 are formed in the drum 2230, so that oil can be supplied into the oil chamber 2201 through the oil supply holes 2202 after a certain period of use.

A plug screw 2240 is installed in the oil charge hole 2202, which seals the oil charge hole 2202. Specifically, the number of the screw plugs 2240 is four, that is, two oil addition holes 2202 are opened in each of the rollers 2230. The screw plug 2240 is made of 45# steel and is M22 x 1.5mm in size.

The number of the bearings 2250 is two, and two bearings 2250 are respectively installed on the sides of the two rollers 2230 facing away from each other and connected to the spindle 2210.

The number of the bearing blocks 2260 is two, and the two bearing blocks 2260 are respectively sleeved on the two bearings 2250 and rotatably connected with the drum 2230. Specifically, a sliding groove is formed at a side of the bearing block 2260 facing the drum 2230, and a connecting portion matched with the sliding groove is formed at a side of the drum 2230 facing the bearing block 2260. Specifically, the bearing housing 2260 is made of 45# steel.

The bearing block 2260 is provided with an oil passage 2203, wherein the oil passage 2203 is used for transferring the engine oil in the engine oil chamber 2201 to the bearing 2250, that is, the oil passage 2203 is communicated with the engine oil chamber 2201.

The two bearing end covers 2270 are respectively disposed on the sides of the two bearing seats 2260 facing away from each other and are connected to the bearing seats 2260 by bolts. Specifically, the bearing end cap 2270 is made of Q235. The bolt is an inner hexagon cylindrical head bolt, the specification is M12 × 25mm, the number is sixteen, and the material Q235.

Specifically, a first O-ring 2204 is installed on a side of the drum 2230 facing the sprocket 2220, and the first O-ring 2204 serves to prevent oil from flowing out from a gap between the sprocket 2220 and the drum 2230. Specifically, one side of the drum 2230 facing the sprocket 2220 is provided with a first step shape, and both sides of the sprocket 2220 are provided with a second step shape that fits the first step shape. The first O-ring 2204 is installed in the middle of the first step shape and the second step shape. This further facilitates sealing. Specifically, the first O-ring 2204 is made of rubber and has a size of 170 × 5.3 mm.

This structure contributes to sealing between the roller 2230 and the sprocket 2220, so that it is possible to effectively prevent oil from flowing out from the gap between the sprocket 2220 and the roller 2230.

Specifically, a floating seal ring set 2205 is installed between the drum 2230 and the bearing housing 2260, and the floating seal ring set 2205 is used for preventing oil from flowing out from a gap between the sprocket 2220 and the bearing housing 2260.

This structure facilitates sealing between the drum 2230 and the bearing housing 2260, so that oil can be effectively prevented from flowing out from the gap between the sprocket 2220 and the drum 2230.

Specifically, a second O-ring 2206 is mounted between the bearing end cover 2270 and the bearing housing 2260, the second O-ring 2206 being used to prevent oil from flowing out of the gap between the bearing end cover 2270 and the bearing housing 2260. Specifically, the end of the bearing housing 2270 facing the bearing housing 2260 is inserted into the bearing housing 2260, and the second O-ring 2206 is mounted on the end of the bearing housing 2270 inserted into the bearing housing 2260, which is more beneficial for sealing. Specifically, the second O-ring 2206 is made of rubber and has a size of 190 × 5.3 mm.

This structure contributes to sealing between the bearing end cover 2270 and the bearing housing 2260, so that it is possible to effectively prevent oil from flowing out from the gap between the bearing end cover 2270 and the bearing housing 2260.

Specifically, a shaft circlip 2207 is provided on the side of the bearing 2250 away from the sprocket 2220, and the shaft circlip 2207 serves to restrict axial movement of the bearing 2250. Thus, the bearing 2250 is more securely and reliably coupled to the shaft. Specifically, the material of the circlip for shaft 2207 is 65 Mn.

Specifically, an oil seal 2208 is installed between the bearing end cover 2270 located at the power input end of the spindle 2210 and the spindle 2210, and the oil seal 2208 is used for preventing oil from flowing out from the gap between the spindle 2210 and the bearing end cover 2270. Specifically, the oil seal 2208 is made of rubber, 120 × 150 × 12mm in size, and is mounted on the side of the bearing end cover 2270 facing the sprocket 2220.

Specifically, the bearing 2250 is a self-aligning roller bearing.

Specifically, one end of the bearing 2250 facing the roller 2230 is mounted with a distance sleeve 2209. Specifically, distance sleeve 2209 is located inside of floating seal ring set 2205, which is used to adjust the play and preload of bearing 2250, while also avoiding wear of mandrel 2210 by floating seal ring set 2205.

In one embodiment, the first power part 2400 includes an explosion-proof motor 2410, an elastic plum coupling 2420, a brake 2430, and a speed reducer 2440. The power of the explosion-proof motor 2410 is 55 Kw.

The explosion-proof motor 2410 can prevent the motor from generating sparks in operation, thereby preventing inflammable matters in a mine from exploding.

The elastic plum blossom coupling 2420 is only subjected to extrusion force in the process of transmitting torque, is not subjected to the torque normally borne by a rotating piece, is not easy to wear in the using process, greatly prolongs the service life, and is connected with the power input end of the explosion-proof motor 2410.

A brake 2430 is mounted on the side of the resilient tulip coupling 2420 facing away from the sprocket set for slowing, stopping or holding the coupling in a stopped state, etc. Therefore, when the scraper conveyor runs abnormally, the scraper conveyor can be quickly braked and stopped.

The power input end of the speed reducer 2440 is connected with the power output end of the elastic plum coupling 2420, and the power output end of the speed reducer 2440 is connected with the power input end of the chain wheel set.

In one embodiment, the head driving part 2000 further includes a connection plate 2500, the connection plate 2500 is installed between the first power part 2400 and the head frame 2100, and is connected to the first power part 2400 and the head frame 2100 through bolts, a positioning key 2510 is installed on a side of the connection plate 2500 facing the head frame 2100, and the positioning key 2510 is connected to the connection plate 2500 through bolts. The positioning and connection between the headstock 2100 and the connecting plate 2500 can be completed quickly through the positioning key 2510, and the positioning key 2510 is connected with the connecting plate 2500 through a bolt, so that when the positioning key 2510 is damaged, only the positioning key 2510 needs to be detached, and the whole connecting plate 2500 does not need to be replaced.

In one embodiment, the head gear 2000 further comprises a guard plate 2600, the guard plate 2600 is mounted on a side of the sprocket assembly facing the middle slot 1000, and is used for filling a gap between the sprocket assembly and the chute to prevent coal lumps or coal dust from falling.

In one embodiment, the head driving part 2000 further includes a stopper 2700, and the stopper 2700 is installed on a side of the chain splitter facing the middle groove 1000 and used for limiting the movement of the chain splitter so that the chain splitter cannot move away from the sprocket set, thereby enabling the chain splitter to work stably.

It should be noted that the first sprocket set, the second sprocket set, and the first power part and the second power part have similar structures, and therefore, redundant description is not repeated here.

The chain speed of the scraper conveyor was 1.1 m/s.

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

1. A scraper conveyor for mining steeply inclined extremely thin coal seams is characterized in that: the method comprises the following steps:

middle part groove, it includes:

the machine head transmission part is arranged at one end of the middle groove;

2. The face conveyor for mining steeply dipping extremely thin coal seams as claimed in claim 1, wherein: the head transmission part includes:

a headstock;

3. The face conveyor for mining steeply dipping extremely thin coal seams as claimed in claim 1, wherein: the tail transmission part comprises:

a tailstock;

4. The face conveyor for mining steeply dipping extremely thin coal seams as claimed in claim 1, wherein: the scraper chain assembly comprises:

5. The face conveyor for mining steeply dipping extremely thin coal seams as claimed in claim 1, wherein: the scraper chain conveying device is characterized by further comprising two chain blocking devices, wherein the two chain blocking devices are arranged at one end, facing the machine head transmission part, of the middle groove and are respectively used for blocking the two scraper chains.

6. A face conveyor for mining steeply dipping extremely thin coal seams as defined in claim 2, wherein: the first chain wheel set comprises a mandrel, a chain wheel, rollers, screw plugs, bearings, bearing seats and bearing end covers, the chain wheel is arranged in the middle of the mandrel and connected with the mandrel through a first transmission key, the two rollers are respectively arranged on two sides of the chain wheel and connected with the mandrel through a second transmission key, an oil cavity is arranged on the inner side of the roller and communicated with a gap between the chain wheel and the mandrel, a plurality of engine oil adding holes are formed in the rollers, the screw plugs are used for sealing the engine oil adding holes, the two bearings are respectively arranged on one sides of the two rollers, which are far away from each other, and connected with the mandrel, the two bearing seats are respectively sleeved on the two bearings and rotatably connected with the rollers, the bearing seats are provided with oil ducts which are used for transmitting the engine oil in the engine oil cavity to the bearings, the two bearing end covers are respectively arranged on one sides of the two bearing seats, which are deviated from each other, and are connected with the bearing seats through bolts.

7. A face conveyor for mining steeply dipping extremely thin coal seams as defined in claim 2, wherein: first power portion includes explosion-proof type motor, elasticity plum blossom shaft coupling, stopper and speed reducer, the power input end of elasticity plum blossom shaft coupling with the power take off end of explosion-proof type motor is connected, the stopper sets up deviating from of elasticity plum blossom shaft coupling one side of sprocket group, the power input end of speed reducer with the power take off end of elasticity plum blossom shaft coupling is connected, the power take off end of speed reducer with the power input end of sprocket group is connected.