CN210762694U

CN210762694U - Belt type reversed loader for coal mine

Info

Publication number: CN210762694U
Application number: CN201921637675.1U
Authority: CN
Inventors: 朱云峰; 王雪松; 王震
Original assignee: Changzhou Huihui Machinery Technology Co ltd
Current assignee: Changzhou Huihui Machinery Technology Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-06-16
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a belt elevating conveyor for coal mine belongs to elevating conveyor technical field, its technical scheme main points are, including total frame, driven cylinder and motorized pulley, total frame includes the fore-stock, the intermediate frame, the tailstock, all the cover is equipped with the conveyer belt on driven cylinder and the motorized pulley, the fore-stock, intermediate frame and tailstock are articulated each other in proper order, the both sides of fore-stock all are provided with a pair of eccentric wheel, every height direction distribution along the tailstock to the eccentric wheel, the tip of driven cylinder is placed between a pair of eccentric wheel, and set up with a pair of eccentric wheel laminating of homonymy, every be provided with spacing subassembly between eccentric wheel and the fore-stock, driven cylinder sets up the tip of intermediate frame in the fore-stock, motorized pulley sets up the tip of intermediate frame in the tailstock is kept away from, motorized pulley's one end is connected with explosion-proof machine. Thereby reduce the phenomenon that the conveyer belt appears skidding, the utility model is suitable for a belt elevating conveyor's design.

Description

Belt type reversed loader for coal mine

Technical Field

The utility model belongs to the technical field of the elevating conveyor technique and specifically relates to a belt elevating conveyor for coal mine is related to.

Background

At present, the reversed loader is called a scraper reversed loader for a crossheading. The bridge scraper conveyor is arranged in a section transportation roadway at a lower outlet of a mine working face.

The utility model discloses a chinese utility model with publication number CN203239388U, which comprises a driven roller, a receiving hopper, a buffer roller, a connecting frame, a tail frame, an upper roller, a connecting plate, a lower roller, a front frame, an electric roller and a lift cylinder. The tail frame is connected with the front frame through a connecting plate, the driven roller is arranged at the rear end of the tail frame, the receiving hopper, the buffer roller and the upper roller are respectively arranged at the upper end of the tail frame, the lifting oil cylinder is arranged on the tail frame through a connecting frame, the electric roller is arranged at the front end of the front frame, and the lower roller is arranged at the lower ends of the front frame and the tail frame. The product is simple in structure and reasonable in design, can be used for a tunnel with a turn and a rear transportation device to meet working condition environments with inconsistent material receiving height requirements, achieves the continuous working function of the host in the production process under special working conditions, is flexible and convenient to operate, can achieve continuous operation, and improves the production efficiency.

The above prior art solutions have the following drawbacks: although the prior art can achieve the effect of improving the production efficiency through continuous operation, the belt of the belt type reversed loader has elasticity, and the connection between the belt and the roller is easy to loose after long-time use, so that the phenomenon of slipping occurs, and the belt type reversed loader can normally work.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a belt elevating conveyor for coal mine has the effect that reduces the production of the phenomenon of skidding between belt and the cylinder.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a belt type reversed loader for coal mines comprises a main frame, a driven roller and an electric roller, wherein the main frame comprises a front frame, a middle frame and a tail frame which are connected in sequence, a conveyer belt is sleeved on the driven roller and the electric roller, the front frame, the middle frame and the tail frame are hinged in sequence, a pair of eccentric wheels are arranged on two sides of the front frame, each pair of eccentric wheels are distributed along the height direction of the tail frame, the end part of the driven roller is placed between the pair of eccentric wheels and is attached to the pair of eccentric wheels on the same side, waist-shaped holes are formed in two sides of the front frame, two ends of the driven roller are arranged in the waist-shaped holes in a penetrating mode, a limiting component is arranged between each pair of eccentric wheels and the front frame, and the driven roller is arranged at the end part, far away from the middle frame, of the front frame, the electric roller is arranged at the end part of the tail frame far away from the middle frame, and one end of the electric roller is connected with an explosion-proof motor.

Through adopting above-mentioned technical scheme, place the material that will transport on the conveyer belt, rotate through motorized pulley, drive the conveyer belt operation. The material moves from the motorized drum in the direction of the driven drum and is then unloaded at the end of the front frame remote from the intermediate frame. Because the conveyer belt has elasticity, therefore the conveyer belt uses the back for a long time, the easy extension that warp, consequently, set up two pairs of eccentric wheels, when the conveyer belt is because lax produces the phenomenon of skidding, rotate every pair of eccentric wheels towards opposite direction, thereby can move the center pin of the driven cylinder between every pair of eccentric wheels towards the direction of keeping away from electric drum along the direction in waist type hole, then carry on spacingly to two pairs of eccentric wheels through spacing subassembly, make the eccentric wheel can fix and not rotate, thereby lengthen the centre-to-centre spacing between electric drum and the driven cylinder, can be taut with the conveyer belt, thereby reduce the phenomenon that the conveyer belt skidded.

The utility model discloses further set up to, spacing subassembly includes a plurality of limit gear, every limit gear respectively with correspond the position the coaxial setting of eccentric wheel to the limit gear and the mutual fixed connection of eccentric wheel of coaxial setting, two of homonymy equal detachable meshing has a spacing rack on the limit gear, spacing rack with tailstock interconnect sets up, spacing rack is located the tailstock is close to driven cylinder's one end, the both sides of leading truck frame all are provided with the mounting panel, be provided with the telescopic link on mounting panel (53), the telescopic link is located spacing rack with between the tailstock.

Through adopting above-mentioned technical scheme, when rotating every pair eccentric wheel, limit gear can rotate along with the eccentric wheel, and when the eccentric wheel rotated the position that needs, with two limit gear meshes simultaneously of spacing rack and homonymy to can lock two limit gear of homonymy. When the eccentric wheel rotates, the telescopic rod pushes the limiting rack towards the direction away from the limiting gear, and the limiting rack is disengaged from the two limiting gears on the same side, so that the limiting gear can rotate along with the eccentric wheel conveniently.

The utility model discloses further set up to, the front frame intermediate frame with tail frame length direction's one side evenly distributed a plurality of upper roll, the both ends of upper roll respectively with the corresponding position of total frame is rotated and is connected, the upper roll sets up to falling trapezoidally, the upper roll includes a plurality of articulated connecting rollers in proper order, the front frame intermediate frame with tail frame length direction's another side evenly distributed a plurality of snub rollers, the tail frame with the both ends that the front frame was carried on the back mutually all are provided with snub pulley, the upper roll the snub roller and snub roller all with the conveyer belt rotates to be connected.

Through adopting above-mentioned technical scheme, because the conveyer belt is soft material, has elasticity, consequently when the material was placed on the conveyer belt, the conveyer belt warp easily, consequently sets up the upper roll into down trapezoidal, and the upper roll is sunken towards the position that is close to the snub pulley promptly to can set up the upper roll into the multistage and connect the roller articulated formation, thereby can reduce the pressure that bears on the conveyer belt. Because the conveyer belt will contact with driven cylinder gradually when conveying to the fore-frame, the conveyer belt changes the process that the plane need carry out a buffering from falling trapezoidal, consequently sets up the effect that impact idler can play the buffering to the conveyer belt.

The utility model discloses further set up to, be provided with the sweeper of a plurality of V types in the total frame, the sweeper with the inner wall laminating of conveyer belt sets up, the sweeper is close to the upper roll setting, every the sweeper includes that two bracing pieces that connect into the V type and fix the brush on the bracing piece, the brush with the inner wall laminating of conveyer belt sets up, every the both ends of bracing piece all are fixed in the total frame.

Through adopting above-mentioned technical scheme, because the material of carrying on the conveyer belt is the cinder, the cinder produces the dust easily in the uninstallation, and the dust falls on the reverse side of conveyer belt easily, because contain a lot of tiny dust particles in the dust to cause the phenomenon of skidding to produce between conveyer belt and driven cylinder or the motorized pulley easily, consequently set up the brush, can clean the dust above the conveyer belt, reduce the production of the conveyer belt phenomenon of skidding.

The utility model discloses further set up to, the preceding frame is kept away from the both sides of the tip of middle frame all are provided with the baffle of unloading, the preceding frame includes a plurality of mounts and a plurality of fixed plate, every the mount all sets up to hollow structure, every the fixed plate is fixed in between two adjacent mounts of homonymy, every the mount is close to the one end of baffle of unloading is provided with square nut, square nut with through the screw connection between the mount, the baffle of unloading with pass through bolted connection between the square nut.

Through adopting above-mentioned technical scheme, when the tip of front frame was transported to the material, the material will fall from the tip of front frame, when the material whereabouts, can shelter from flying upward of partial material dust through the baffle of unloading, reduce inside the dust gets into the conveyer belt. The square nut is arranged, the inside of the fixing frame can be sealed, dust and impurities are reduced from entering the inside of the fixing frame, and therefore the service life of the fixing frame can be prolonged.

The utility model discloses further set up to, two the bottom of baffle of unloading all inclines to be provided with the guide plate, two the relative slope of guide plate sets up.

Through adopting above-mentioned technical scheme, the effect of water conservancy diversion can be played to the whereabouts of material to the setting of guide plate.

The utility model discloses further set up to, the frame is close to one side of guide plate is provided with the frame gyration roof beam, the frame gyration roof beam with driven cylinder's axis parallel arrangement, the conveyer belt wears to locate the frame gyration roof beam with between the driven cylinder, the frame gyration roof beam is kept away from driven cylinder's one end is fixed with the dead lever, the dead lever is kept away from the both ends of the one side of frame gyration roof beam all are provided with the gyro wheel.

Through adopting above-mentioned technical scheme, in daily work process, often need remove the preceding frame of whole elevating conveyor and get into the mine cave, consequently set up the removal that the elevating conveyor can be convenient for of gyro wheel.

The utility model discloses further set up to, motorized pulley with all be provided with anti-skidding arris on the driven cylinder.

Through adopting above-mentioned technical scheme, the production of the phenomenon of skidding between conveyer belt and motorized pulley and the driven roll can be reduced in the setting of anti-skidding arris.

To sum up, the utility model discloses following beneficial effect has:

1. the arrangement of the eccentric wheel, the limiting assembly and the sweeper can achieve the effect of reducing the slipping phenomenon of the conveying belt;

2. the effect of supporting the conveying belt can be achieved through the arrangement of the upper carrier roller and the buffer carrier roller;

3. through the setting of unloading fender and guide plate, can play the effect of direction to the whereabouts of material.

Drawings

Fig. 1 is a schematic view of the overall structure of a reversed loader according to an embodiment.

Fig. 2 is a schematic diagram of an eccentric wheel and stop assembly in a reversed loader according to one embodiment.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of the overall structure of the reversed loader according to an embodiment.

Fig. 5 is a partially enlarged schematic view of a portion B in fig. 2.

In the figure, 1, a main frame; 11. a front frame; 12. a middle frame; 13. a tailstock; 2. a driven drum; 21. a kidney-shaped hole; 22. anti-slip edges; 3. an electric roller; 4. a conveyor belt; 5. an eccentric wheel; 51. a limiting component; 511. a limit gear; 512. a limit rack; 513. a telescopic rod; 52. an explosion-proof motor; 53. mounting a plate; 6. an upper supporting roller; 61. a buffer roller; 62. a connecting roller; 63. a lower carrier roller; 7. a sweeper; 71. a support bar; 72. a brush; 8. a discharge baffle; 81. a fixed mount; 82. a fixing plate; 83. a square nut; 84. a baffle; 9. a gantry slewing beam; 91. fixing the rod; 92. and a roller.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses a belt elevating conveyor for coal mine, including total frame 1, rotate respectively at the both ends of total frame 1 and be connected with driven cylinder 2 and motorized pulley 3. The general rack 1 comprises a front rack 11, a middle rack 12 and a tail rack 13, wherein the front rack 11, the middle rack 12 and the tail rack 13 are hinged with each other in sequence, and generally, according to working requirements, when a long reversed loader is needed, the front rack 11, the middle racks 12 and the tail rack 13 are hinged in sequence. When the driven roller 2 and the electric roller 3 are installed, the driven roller 2 is arranged at the end part of the front frame 11 far away from the middle frame 12, the electric roller 3 is arranged at the end part of the tail frame 13 far away from the middle frame 12, one end of the electric roller 3 is connected with an explosion-proof motor 52, and the driven roller 2 and the electric roller 3 are both sleeved with a conveying belt 4. The materials to be transported are placed on the conveyer belt 4 and are rotated by the electric roller 3 to drive the conveyer belt 4 to run. The material moves from the motorized pulley 3 in the direction of the driven pulley 2 and is then unloaded at the end of the front frame 11 remote from the intermediate frame 12. In order to reduce the occurrence of slippage between the belt 4 and the driven roller 2 and the motorized roller 3, anti-slip ribs 22 (shown in fig. 2) are provided on the outer surfaces of the driven roller 2 and the motorized roller 3.

As shown in fig. 2 and 3, since the conveyor belt 4 has elasticity, the conveyor belt 4 is easily deformed and elongated after a long time use, and the conveyor belt 4 is easily slipped. Therefore, a pair of eccentric wheels 5 are arranged on two sides of the front frame 11, each pair of eccentric wheels 5 are distributed along the height direction of the tail frame 13, the end part of the driven roller 2 is placed between the pair of eccentric wheels 5 and is attached to the pair of eccentric wheels 5 on the same side, kidney-shaped holes 21 are formed in two sides of the front frame 11, two ends of the driven roller 2 are penetrated into the kidney-shaped holes 21, when the conveying belt 4 is loosened to cause a slipping phenomenon, each pair of eccentric wheels 5 rotate in opposite directions, so that the central shaft of the driven roller 2 between each pair of eccentric wheels 5 can move in a direction far away from the electric roller 3, the central distance between the electric roller 3 and the driven roller 2 is lengthened through the two pairs of eccentric wheels 5, the conveying belt 4 can be tensioned, and the slipping phenomenon of the conveying belt 4 is reduced.

Referring to fig. 3, after the conveyor belt 4 is tensioned, each pair of eccentric wheels 5 needs to be limited so that the driven roller 2 is not easy to return to the original position, and therefore a limiting assembly 51 is arranged between each pair of eccentric wheels 5 and the front frame 11. The limiting assembly 51 comprises a plurality of limiting gears 511, each limiting gear 511 is coaxially arranged with the eccentric wheel 5 at the corresponding position, the coaxially arranged limiting gears 511 and the eccentric wheels 5 are fixedly connected with each other, and when the limiting gears 511 rotate, the eccentric wheels 5 can rotate along with the limiting gears 511. The two limiting gears 511 on the same side are detachably engaged with the limiting rack 512, and when the eccentric wheel 5 rotates to a required position, the limiting rack 512 and the two limiting gears 511 on the same side are simultaneously engaged, so that the two limiting gears 511 on the same side can be locked. Spacing rack 512 and tailstock 13 interconnect sets up, spacing rack 512 is located the one end that tailstock 13 is close to driven drum 2, both sides at preceding frame 11 all are provided with mounting panel 53, be provided with telescopic link 513 on mounting panel 53, telescopic link 513 is located between spacing rack 512 and tailstock 13, when eccentric wheel 5 rotated, telescopic link 513 is with spacing rack 512 towards the direction propelling movement of keeping away from spacing gear 511, with spacing rack 512 and two spacing gears 511 of homonymy disengage, thereby can be convenient for spacing gear 511 to rotate along with eccentric wheel 5.

Referring to fig. 4, a plurality of upper carrier rollers 6 are arranged on the front frame 11, the middle frame 12 and the tail frame 13, the upper carrier rollers 6 are rotatably connected with the conveying belt 4, the upper carrier rollers 6 are distributed along one side of the front frame 11, the middle frame 12 and the tail frame 13 in the length direction respectively, each upper carrier roller 6 is arranged in an inverted trapezoid shape, each upper carrier roller 6 comprises a plurality of connecting rollers 62 hinged in sequence, and the positions of the connecting rollers 62 on the two sides are lower than the positions of the connecting rollers 62 on the middle connecting rollers 62 due to the action of gravity. Because the conveyer belt 4 is soft material, has elasticity, consequently when the material was placed on conveyer belt 4, conveyer belt 4 is easy to be out of shape, consequently sets up upper idler 6 into the trapezoidal form that falls, bears the atress on the conveyer belt 4 more easily to can reduce the pressure that bears on the conveyer belt 4. The other side of the front frame 11, the middle frame 12 and the tail frame 13 in the length direction is respectively provided with a plurality of lower supporting rollers 63, the lower supporting rollers 63 are rotatably connected with the conveying belt 4, the lower supporting rollers 63 can facilitate the conveying of the conveying belt 4 and play a certain tensioning role, and therefore the slipping phenomenon of the conveying belt 4 is reduced. Because conveyer belt 4 will contact with driven cylinder 2 gradually when conveying to front frame 11, conveyer belt 4 changes the process that the plane needs to carry out a buffering from the trapezoidal of falling into, consequently all is provided with a plurality of snub pulley 61 at the both ends that tail frame 13 and front frame 11 carried on the back mutually, and a plurality of snub pulley 61 all rotate with conveyer belt 4 and be connected.

Referring to fig. 4, the material conveyed on the conveyor belt 4 is cinder, which is easy to generate dust when being unloaded, the dust is easy to fall on the reverse side of the conveyor belt 4, and the dust contains a lot of tiny dust particles, so that the slippage phenomenon between the conveyor belt 4 and the driven roller 2 or the electric roller 3 is easy to occur. Be provided with the sweeper 7 of a plurality of V types on total frame 1, the inner wall laminating setting of sweeper 7 and conveyer belt 4, sweeper 7 is close to upper roll 6 and sets up, can clean the dust above the conveyer belt 4 through sweeper 7, reduces the production of the conveyer belt 4 phenomenon of skidding. Each sweeper 7 comprises two support rods 71 connected into a V shape and a hairbrush 72 fixed on the support rods 71, the hairbrush 72 is attached to the inner wall of the conveying belt 4, and two ends of each support rod 71 are fixed on the main frame 1.

Referring to fig. 2 and 3, in order to further reduce dust entering the conveying belt 4, the two sides of the end portion of the front frame 11 far away from the middle frame 12 are provided with the discharging baffles 8, when the material is conveyed to the end portion of the front frame 11, the material falls from the end portion of the front frame 11, and when the material falls, the flying of part of the material dust can be shielded by the discharging baffles 8, so that the dust entering the conveying belt 4 is reduced. The front frame 11 includes a plurality of fixing frames 81 and a plurality of fixing plates 82, each fixing frame 81 is set to be a hollow structure, each fixing plate 82 is fixed between two adjacent fixing frames 81 on the same side, when a material falls, generated dust easily enters the fixing frame 81, so a square nut 83 (as shown in fig. 5) is arranged at one end of each fixing frame 81 close to the discharge baffle 8, the square nut 83 is connected with the fixing frame 81 through a screw, and the discharge baffle 8 is connected with the square nut 83 through a bolt. The square nut 83 can seal the inside of the fixing frame 81, reduce dust and impurities from entering the inside of the fixing frame 81, and prolong the service life of the fixing frame 81. In order to prevent the materials from scattering everywhere when falling, the guide plates 84 are obliquely arranged at the bottoms of the two discharging baffles 8, and the two guide plates 84 are obliquely arranged relatively, so that the material falling can be guided.

Referring to fig. 2, one side of the frame close to the guide plate 84 is provided with a frame turning beam 9, the frame turning beam 9 is parallel to the axis of the driven roller 2, the conveying belt 4 penetrates between the frame turning beam 9 and the driven roller 2, one end of the frame turning beam 9 far away from the driven roller 2 is fixed with a fixing rod 91, in the daily work process, the front frame 11 of the whole transfer machine is required to be moved frequently to enter a mine hole, and therefore, two ends of one side of the fixing rod 91 far away from the frame turning beam 9 are provided with rollers 92, and the transfer machine can be moved conveniently.

The implementation principle of the above embodiment is as follows: the materials to be transported are placed on the conveyer belt 4 and are rotated by the electric roller 3 to drive the conveyer belt 4 to run. The material moves from the motorized pulley 3 in the direction of the driven pulley 2 and is then unloaded at the end of the front frame 11 remote from the intermediate frame 12. Since the conveyor belt 4 is deformed after a long time use. At this time, the telescopic rod 513 pushes the limiting rack 512 towards the direction far away from the limiting gear 511, the limiting rack 512 is disengaged from the two limiting gears 511 on the same side, then each pair of eccentric wheels 5 rotates towards the opposite direction, so that the central shaft of the driven roller 2 between each pair of eccentric wheels 5 can move towards the direction far away from the electric roller 3, when the eccentric wheels 5 rotate to a required position, the telescopic rod 513 pushes the limiting rack 512 towards the direction close to the limiting gear 511, the limiting rack 512 is simultaneously engaged with the two limiting gears 511 on the same side, so that the two limiting gears 511 on the same side can be locked, the center distance between the electric roller 3 and the driven roller 2 is lengthened, and the conveying belt 4 can be tensioned.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a belt elevating conveyor for coal mine, includes total frame (1), driven cylinder (2) and motorized pulley (3), total frame (1) is including fore-stock (11), middle frame (12), tailstock (13) that connect gradually, driven cylinder (2) with all overlap on motorized pulley (3) and be equipped with conveyer belt (4), its characterized in that: the front frame (11), the middle frame (12) and the tail frame (13) are sequentially hinged with each other, a pair of eccentric wheels (5) are arranged on two sides of the front frame (11), each pair of eccentric wheels (5) are distributed along the height direction of the tail frame (13), the end part of the driven roller (2) is placed between the pair of eccentric wheels (5) and is attached to the pair of eccentric wheels (5) on the same side, waist-shaped holes (21) are formed in two sides of the front frame (11), two ends of the driven roller (2) are arranged in the waist-shaped holes (21) in a penetrating mode, a limiting component (51) is arranged between each pair of eccentric wheels (5) and the front frame (11), the driven roller (2) is arranged at the end part, far away from the middle frame (12), of the tail frame (13), and the end part, far away from the middle frame (12), of the electric roller (3), one end of the electric drum (3) is connected with an explosion-proof motor (52).

2. The belt conveyor for coal mines as set forth in claim 1, wherein: spacing subassembly (51) include a plurality of limit gear (511), every limit gear (511) respectively with correspond the position eccentric wheel (5) coaxial setting to limit gear (511) and eccentric wheel (5) mutual fixed connection of coaxial setting, two of homonymy equal detachable meshing limit rack (512) on limit gear (511), limit rack (512) with tailstock (13) interconnect sets up, limit rack (512) are located tailstock (13) are close to the one end of driven drum (2), the both sides of preceding frame (11) all are provided with mounting panel (53), be provided with telescopic link (513) on mounting panel (53), telescopic link (513) are located limit rack (512) with between tailstock (13).

3. The belt conveyor for coal mines as set forth in claim 1, wherein: preceding frame (11) in the middle of frame (12) with tail frame (13) length direction's one side evenly distributed a plurality of upper roller (6), the both ends of upper roller (6) respectively with the corresponding position of total frame (1) is rotated and is connected, upper roller (6) set up to fall trapezoidally, upper roller (6) include a plurality of articulated connecting roller (62) in proper order, preceding frame (11) in the middle of frame (12) with tail frame (13) length direction's another side evenly distributed a plurality of snub pulley (63), tail frame (13) with both ends that preceding frame (11) carried on the back mutually all are provided with snub pulley (61), upper roller (6) snub pulley (63) and snub pulley (61) all with conveyer belt (4) are rotated and are connected.

4. The belt conveyor for coal mines as set forth in claim 3, wherein: be provided with sweeper (7) of a plurality of V types on total frame (1), sweeper (7) with the inner wall laminating setting of conveyer belt (4), sweeper (7) are close to go up bearing roller (6) setting, every sweeper (7) include two bracing pieces (71) that connect into the V type and fix brush (72) on bracing piece (71), brush (72) with the inner wall laminating setting of conveyer belt (4), every the both ends of bracing piece (71) are all fixed in on total frame (1).

5. The belt conveyor for coal mines as set forth in claim 1, wherein: the front frame (11) is far away from the two sides of the end part of the middle frame (12) and is provided with a discharging baffle (8), the front frame (11) comprises a plurality of fixing frames (81) and a plurality of fixing plates (82), each fixing frame (81) is of a hollow structure, each fixing plate (82) is fixed between two adjacent fixing frames (81) on the same side, one end, close to the discharging baffle (8), of each fixing frame (81) is provided with a square nut (83), each square nut (83) is connected with the corresponding fixing frame (81) through screws, and the discharging baffles (8) are connected with the square nuts (83) through bolts.

6. The belt conveyor for coal mines as set forth in claim 5, wherein: the bottoms of the two discharging baffles (8) are obliquely provided with guide plates (84), and the two guide plates (84) are oppositely obliquely arranged.

7. The belt conveyor for coal mines as set forth in claim 6, wherein: one side of the frame, which is close to the guide plate (84), is provided with a frame rotary beam (9), the frame rotary beam (9) and the axis of the driven roller (2) are arranged in parallel, the conveying belt (4) penetrates through the frame rotary beam (9) and the space between the driven roller (2), one end, which is far away from the driven roller (2), of the frame rotary beam (9) is fixed with a fixing rod (91), and two ends, which are far away from the frame rotary beam (9), of one face of the fixing rod (91) are provided with rollers (92).

8. The belt conveyor for coal mines as set forth in claim 1, wherein: the electric roller (3) and the driven roller (2) are both provided with anti-skid edges (22).