CN117068635A - A safe transportation device for mining gravel and its transportation method - Google Patents

Abstract

The invention relates to the technical field of conveying devices, in particular to a mining broken stone safety conveying device and a conveying method thereof. According to the invention, the first conveying mechanism, the dust removing assembly and the water supply mechanism are arranged, so that when the device conveys crushed stones, the net-shaped conveying belt can be driven to rotate through the rotation of the first motor, the crushed stones are separated and continuously conveyed under the action of the first baffle, and meanwhile, the rotation of the first motor can pour water pre-poured into the fixed box into the pipeline through the water outlet pipe and spray the crushed stones through the atomizing nozzle to carry out dust fall treatment.

Description

A safe transportation device for mining gravel and its transportation method

Technical field

The present invention relates to the technical field of conveying devices, specifically a mining gravel safety conveying device and a conveying method thereof.

Background technique

Mining refers to the process of extracting useful mineral resources and metals from the surface or underground, and also refers to the mining technology of specific mineral resources or metals. It is the oldest industry in human history. Tens of thousands of years ago, African residents mined bronze. The ancient Egyptians mined metals. Ancient Indians made the earliest gold and silver amulets in Indian history. It can be seen from this that mining has already a long history. Generally speaking, mining is mainly divided into two types: open pit mining and underground mining. Open-pit mining is to mine metal ore on the surface of the mining area, and obtain useful ore materials through excavation, mixing, crushing, grading and other processes; underground mining is to drill for useful mineral deposits, establish corresponding underground workstations, and then drill in deep rock layers Metal ores are mined and useful ores are obtained through crushing and transportation. During the mining process, the gravel generated during mining needs to be transported and processed.

China Patent Network Announcement Number: CN107458820A discloses a gravel conveying device for mining, which includes a base. A motor is fixedly connected to the top of the base. A first pulley is fixedly connected to the output shaft of the motor. The surface of the first pulley is connected through a belt drive. There is a second pulley, the first gear is fixedly connected to the back of the second pulley, and the surface of the gear belt is connected to a transportation device through a rotating shaft, and a buffer spring is fixedly connected between the transportation device and the opposite side of the gear belt.

The above-mentioned patented technology proposes a gravel conveying device for mining, which makes the transportation of gravel very convenient. At the same time, the device is very stable, preventing deviation during transportation, greatly reducing the waste of time, and making it possible to effectively The transportation of gravel can also prevent the gravel from falling during transportation, which greatly ensures the safety of construction workers, reduces cleaning time, and greatly improves work efficiency. However, in the actual process of transporting gravel, although it can prevent the gravel from falling, as more and more gravel enters the box, the size of the box decreases. The opening of the box is getting smaller and smaller. During the process of adding gravel, it is easy for the gravel to fall out. Moreover, several boxes are used to load the gravel, resulting in low transportation efficiency.

In view of this, the present invention proposes a mining gravel safety conveying device and its conveying method to solve the above problems.

Contents of the invention

In order to achieve the above objects, the present invention provides the following technical solutions:

A mining gravel safety conveying device and a conveying method thereof, including a base and a conveying frame provided on the upper surface of the base. The inner walls of the conveying frame are respectively provided with a first conveying mechanism and a second conveying mechanism. The first conveying mechanism It includes two symmetrical first rotating shafts rotatably arranged on the inner wall of the conveying frame, and first conveying rollers sleeved on the surfaces of the two first rotating shafts, and mesh conveyor belts are sleeved on the surfaces of the two first conveying rollers. A plurality of first baffles are fixed at equal intervals on the surface of the mesh conveyor belt, and a first motor for driving a first rotating shaft to rotate is provided on the back of the conveyor frame;

A dust removal component for dusting gravel is provided above the transport frame. The dust removal component includes installation pipes fixed on the front and back of the transport frame, and pipes embedded in the surface of the installation pipe and connected to the installation pipe. And the lower surface of the pipe is provided with several atomizing nozzles;

The front side of the transport frame is provided with a water supply mechanism for supplying water to the inside of the pipeline. The water supply mechanism includes a fixed box fixed on the front side of the transport frame, and a sealing extrusion plate slidingly provided on the inner wall of the fixed box, as described below The end of the first rotating shaft extends to the inside of the fixed box and is fixed with a first bevel gear. The inner wall of the fixed box is provided with a reciprocating screw, and the surface of the reciprocating screw is fixed with the first conical gear. The second bevel gears of the gears mesh with each other. The water supply mechanism also includes a sliding plate slidably arranged on the inner wall of the fixed box for pushing the sealing extrusion plate. The surface of the sliding plate is provided with a threaded connection with the surface of the reciprocating screw. Threaded hole.

As a preferred technical solution, the upper surface of the fixed box is embedded with a water outlet pipe connected to the installation pipe. The bottom end of the water outlet pipe extends to the inner bottom of the fixed box, and the surface of the water outlet pipe is provided with a water outlet one-way valve. .

A water inlet pipe is embedded in the side of the fixed box, and the end of the water inlet pipe is connected to a hose connected to the external water tank through a quick connector. A water inlet one-way valve is provided on the surface of the water inlet pipe.

Two symmetrical push rods are fixed on the side of the slide plate, and one end of the two push rods away from the slide plate is fixedly connected to the surface of the sealing extrusion plate.

The surface of the reciprocating screw is fixed with two limiting plates for limiting the movement range of the slide plate.

The second conveying mechanism includes two symmetrical second rotating shafts that are rotatably arranged on the inner wall of the conveying frame, and second conveying rollers nested on the surfaces of the two second rotating shafts. The surfaces of the two second conveying rollers are nested on the surfaces of the two second rotating shafts. There is a conveyor belt, and the conveyor belt is located inside the mesh conveyor belt. A second motor for driving a second rotating shaft is provided on the back of the conveyor frame. Several second motors are fixed at equal distances on the surface of the conveyor belt. bezel.

The lower surface of the top of the conveyor frame is provided with a first discharge port for discharging the large gravel transported by the mesh conveyor belt, and the front and back of the conveyor frame are provided with small openings for conveying the conveyor belt. The second discharge port for discharging granular gravel.

A discharging assembly corresponding to the second discharging port is provided inside the conveying frame. The discharging assembly includes a discharging plate fixed on the inner wall of the conveying frame, and a trapezoidal block fixed on the upper surface of the discharging plate. , both inclined surfaces of the trapezoidal block are provided with rectangular grooves, and the inner walls of the two rectangular grooves are rotated with ejection plates. Two ejection springs are fixed on the lower surface of the ejection plate, and the two ejection springs The bottom ends are all fixedly connected to the inner bottom wall of the rectangular slot.

The discharging assembly also includes a cylindrical cavity opened inside the trapezoidal block, and a slider slidably disposed on the inner wall of the cylindrical cavity. A fixed rod is fixed on the inner wall of the cylindrical cavity, and the upper surface of the slider is provided with a A sliding hole for the fixed rod to slide. The surface of the fixed rod is covered with a return spring, and the two ends of the return spring are fixedly connected to the lower surface of the slider and the inner bottom wall of the cylindrical cavity respectively. The surface of the slider Two symmetrical pull ropes are fixed, and the other ends of the two pull ropes are fixedly connected to the surfaces of the two ejection plates respectively. The inner walls of the rectangular groove and the cylindrical cavity are provided with sliding holes for the pull ropes to slide. An elastic metal pressing piece corresponding to the second baffle is fixed on the upper surface of the slide block, and a limiting opening is provided on the front side of the trapezoidal block for the elastic metal pressing piece to slide.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. By arranging the first conveying mechanism, the dust removal assembly and the water supply mechanism, the present invention enables the device to put the gravel into the conveying frame and start the first motor when transporting the gravel. The rotation of the first motor drives the The mesh conveyor belt rotates, and the gravel is separated for continuous transportation under the action of the first baffle. At the same time, the rotation of the first motor can pour the water pre-filled in the fixed box into the pipe through the water outlet pipe and spray it through the atomizing nozzle. The dust reduction treatment is carried out on the gravel, so as to achieve the purpose of continuously supplying water to the pipeline and removing dust from the gravel.

2. The present invention sets up a second conveying mechanism and a discharging assembly. When conveying gravel through a mesh conveyor belt, the second motor is started to drive the conveyor belt to rotate. At this time, small particles of gravel can fall to the conveyor belt. on the top, and after the small-grained gravel is transported to the top under the action of the second baffle, it is discharged through the second discharge port to achieve the purpose of screening and transporting the gravel, and can achieve the purpose of rapid discharge and avoid The gravel blocks the second discharge port.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of the three-dimensional structure of the present invention;

Figure 2 is a schematic cross-sectional structural diagram of the present invention;

Figure 3 is a schematic rear view structural diagram of the present invention;

Figure 4 is a schematic diagram of the three-dimensional structure of the fixed box of the present invention;

Figure 5 is a schematic cross-sectional structural diagram of the fixed box of the present invention;

Figure 6 is a schematic diagram of the overall structure of the discharging assembly of the present invention;

Figure 7 is a schematic diagram of the three-dimensional structure of the discharge plate of the present invention;

Figure 8 is a schematic cross-sectional structural diagram of the discharge plate of the present invention.

In the figure: 1. Conveyor frame; 2. First conveyor mechanism; 201, first rotating shaft; 202, first conveyor roller; 203, mesh conveyor belt; 204, first baffle; 205, first motor; 3. Second conveying mechanism; 301. Second rotating shaft; 302. Second conveying roller; 303. Conveying belt; 304. Second motor; 305. Second baffle; 4. Dust removal component; 401. Pipe; 402. Atomizing nozzle ; 5. Water supply mechanism; 501. Fixed box; 502. Sealing extrusion plate; 503. First bevel gear; 504. Reciprocating screw; 505. Second bevel gear; 506. Slide plate; 507. Water outlet pipe; 508 , water outlet one-way valve; 509, water inlet pipe; 5010, water inlet one-way valve; 5011, push rod; 5012, limit plate; 6, first discharge port; 7, second discharge port; 8, discharge Components; 801, discharge plate; 802, trapezoidal block; 803, ejection plate; 804, ejection spring; 805, slider; 806, fixed rod; 807, return spring; 808, pull rope; 809, elastic metal pressing piece.

Detailed ways

In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation modes.

As shown in Figures 1-5, embodiments of the present invention provide a safe transportation device for mining gravel and a transportation method thereof, including a base and a transportation frame 1 disposed on the upper surface of the base. The inner walls of the transportation frame 1 are respectively provided with third A conveying mechanism 2 and a second conveying mechanism 3. The first conveying mechanism 2 includes two symmetrical first rotating shafts 201 rotatably arranged on the inner wall of the conveying frame 1, and a first conveying roller sleeved on the surface of the two first rotating shafts 201. 202. A mesh conveyor belt 203 is set on the surface of the two first conveyor rollers 202. A number of first baffles 204 are fixed at equal intervals on the surface of the mesh conveyor belt 203, and the back of the conveyor frame 1 is provided with a a first motor 205 that rotates the first rotating shaft 201;

A dust removal assembly 4 for removing gravel is provided above the transport frame 1. The dust removal assembly 4 includes installation pipes fixed on the front and back of the transportation frame 1, and a pipe 401 embedded on the surface of the installation pipe and connected to the installation pipe. , and several atomizing nozzles 402 are provided on the lower surface of the pipe 401;

A water supply mechanism 5 for supplying water to the inside of the pipe 401 is provided on the front of the transport frame 1. The water supply mechanism 5 includes a fixed box 501 fixed on the front of the transport frame 1, and a sealing extrusion plate 502 slidably provided on the inner wall of the fixed box 501. , the end of the lower first rotating shaft 201 extends to the inside of the fixed box 501 and is fixed with a first bevel gear 503. A reciprocating screw 504 is rotated on the inner wall of the fixed box 501, and the surface of the reciprocating screw 504 is fixed. There is a second bevel gear 505 that meshes with the first bevel gear 503. The water supply mechanism 5 also includes a slide plate 506 slidably provided on the inner wall of the fixed box 501 for pushing the sealing extrusion plate 502. The surface of the slide plate 506 has openings There is a threaded hole threaded with the surface of the reciprocating screw 504.

The upper surface of the fixed box 501 is embedded with a water outlet pipe 507 that communicates with the installation pipe. The bottom end of the water outlet pipe 507 extends to the inner bottom of the fixed box 501 , and a water outlet one-way valve 508 is provided on the surface of the water outlet pipe 507 .

A water inlet pipe 509 is embedded in the side of the fixed box 501, and the end of the water inlet pipe 509 is connected to a hose connected to the external water tank through a quick connector. A water inlet one-way valve 5010 is provided on the surface of the water inlet pipe 509.

Two symmetrical push rods 5011 are fixed on the side of the slide plate 506, and the ends of the two push rods 5011 away from the slide plate 506 are fixedly connected to the surface of the sealing extrusion plate 502.

Two limiting plates 5012 are fixed on the surface of the reciprocating screw 504 for limiting the movement range of the slide plate 506 .

Among them, the present invention provides the first conveying mechanism 2, the dust removal assembly 4 and the water supply mechanism 5, so that when the device transports gravel, it can put the gravel into the transport frame 1 and start the first motor 205. The rotation of a motor 205 drives the mesh conveyor belt 203 to rotate. Under the action of the first baffle 204, the gravel is separated for continuous transportation, and the materials are carried through the first discharge port 6. When the rotation of the first motor 205 first During the rotation of the rotating shaft 201, the first bevel gear 503 and the second bevel gear 505 can drive the reciprocating screw 504 to rotate. The rotation of the reciprocating screw 504 drives the sliding plate 506 to move back and forth. When the sliding plate 506 moves to the right, The sealing extrusion plate 502 is driven to move to the right, so that the water pre-filled in the fixed box 501 can be poured into the pipe 401 through the water outlet pipe 507 and sprayed through the atomizing nozzle 402 to reduce dust on the gravel. At the same time, the sliding plate 506 moves to the left. When moving, the sealing extrusion plate 502 is driven to move to the left, so that the water in the external water tank is poured into the fixed box 501 through the water inlet pipe 509, thereby achieving the purpose of continuously supplying water to the pipe 401 and removing dust from the gravel.

As shown in FIGS. 1-3 and 6-8 , on the basis of Embodiment 1, and different from Embodiment 1, the second conveying mechanism 3 includes two symmetrical third rotatably arranged on the inner wall of the conveying frame 1 . The two rotating shafts 301 and the second conveying rollers 302 are set on the surfaces of the two second rotating shafts 301. The surfaces of the two second conveying rollers 302 are set with conveying belts 303, and the conveying belts 303 are located inside the mesh conveying belt 203. A second motor 304 for driving a second rotating shaft 301 to rotate is provided on the back of the conveyor frame 1 , and a plurality of second baffles 305 are fixed at equal intervals on the surface of the conveyor belt 303 .

The top lower surface of the conveyor frame 1 is provided with a first discharge port 6 for discharging the large gravel conveyed by the mesh conveyor belt 203. The front and back of the conveyor frame 1 are provided with a first discharge port 6 for conveying the conveyor belt 303. The second discharge port 7 is used for discharging small particles of gravel.

A discharging assembly 8 corresponding to the second discharging port 7 is provided inside the conveying frame 1. The discharging assembly 8 includes a discharging plate 801 fixed on the inner wall of the conveying frame 1, and a discharging plate 801 fixed on the upper surface of the discharging plate 801. The trapezoidal block 802 has rectangular grooves on both inclined surfaces of the trapezoidal block 802, and the inner walls of the two rectangular grooves are rotated with ejection plates 803. Two ejection springs 804 are fixed on the lower surface of the ejection plate 803, and The bottom ends of the two ejection springs 804 are fixedly connected to the inner bottom wall of the rectangular slot.

The discharging assembly 8 also includes a cylindrical cavity opened inside the trapezoidal block 802, and a slider 805 slidably disposed on the inner wall of the cylindrical cavity. A fixed rod 806 is fixed on the inner wall of the cylindrical cavity, and the upper surface of the slider 805 is provided with a There is a sliding hole for the fixed rod 806 to slide. The surface of the fixed rod 806 is covered with a return spring 807, and the two ends of the return spring 807 are fixedly connected to the lower surface of the slider 805 and the inner bottom wall of the cylindrical cavity respectively. The slider Two symmetrical pull cords 808 are fixed on the surface of 805, and the other ends of the two pull cords 808 are fixedly connected to the surfaces of the two ejection plates 803 respectively. The inner walls of the rectangular groove and the cylindrical cavity are provided with holes for the pull cords 808 to slide. The upper surface of the slide block 805 is fixed with an elastic metal pressing piece 809 corresponding to the second baffle 305, and the front side of the trapezoidal block 802 is provided with a limit opening for the elastic metal pressing piece 809 to slide.

Among them, the present invention provides the second conveying mechanism 3 and the discharging assembly 8. When conveying gravel through the mesh conveyor belt 203, the second motor 304 is started to drive the conveyor belt 303 to rotate. At this time, small particles of gravel can be Fall onto the conveyor belt 303, and after the small particles of gravel are transported to the top under the action of the second baffle 305, they are discharged through the second discharge port 7. During the rotation of the conveyor belt 303, when the small particles are crushed After the stone falls onto the discharging plate 801, the continued movement of the second baffle 305 will drive the elastic metal pressing piece 809 to move downward, thereby driving the slider 805 to move downward, and drive the ejection plate 803 to be stored in through the pull rope 808. Inside the rectangular groove, when the second baffle 305 and the elastic metal pressing piece 809 are staggered, the slider 805 can instantly return to its original position under the action of the return spring 807. At this time, the ejection plate 803 can quickly return to its original position under the action of the ejection spring 804. Bounce up to eject the gravel on the discharge plate 801 out of the second discharge port 7, thereby achieving the purpose of rapid material discharge and avoiding the blockage of the second discharge port 7 by the gravel.

When transporting gravel, the steps are as follows:

S1. Gravel feeding: Add the gravel from the mining area in the mine to the bottom of the conveyor frame 1 through manual labor or mechanical equipment;

S2. Gravel transportation: start the first motor 205 and the second motor 304 to transport the gravel. On the one hand, the gravel can be transported stably, safely and efficiently under the action of the conveyor frame 1 and the mesh conveyor belt 203. On the other hand, The fine particles in the gravel can be effectively screened through the mesh conveyor belt 203;

S3. Gravel unloading: The large-gravel gravel transported by the mesh conveyor belt 203 can directly fall to the ground through the first unloading port 6, while the fine gravel transported by the conveyor belt 303 can be discharged on the discharge plate. Under the action of 801, it falls into the receiving container through the two second discharging ports 7 for collection.

The basic principles, main features and advantages of the present invention are described above in conjunction with specific embodiments. Those skilled in the industry should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Under the premise, there will be various changes and improvements in the present invention, and these changes and improvements all fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a mining rubble safety conveyor, includes base and sets up transport frame (1) at the base upper surface, its characterized in that: the conveying device is characterized in that a first conveying mechanism (2) and a second conveying mechanism (3) are respectively arranged on the inner wall of the conveying frame (1), the first conveying mechanism (2) comprises two symmetrical first rotating shafts (201) which are rotatably arranged on the inner wall of the conveying frame (1), first conveying rollers (202) sleeved on the surfaces of the two first rotating shafts (201), a net-shaped conveying belt (203) is sleeved on the surfaces of the two first conveying rollers (202), a plurality of first baffle plates (204) are fixedly arranged on the surfaces of the net-shaped conveying belt (203) at equal intervals, and a first motor (205) for driving one first rotating shaft (201) to rotate is arranged on the back surface of the conveying frame (1);

the dust removing device is characterized in that a dust removing component (4) for removing dust from crushed stone is arranged above the conveying frame (1), the dust removing component (4) comprises mounting pipes fixedly arranged on the front surface and the back surface of the conveying frame (1), a pipeline (401) embedded on the surface of the mounting pipes and communicated with the mounting pipes, and a plurality of atomizing nozzles (402) are arranged on the lower surface of the pipeline (401);

the utility model provides a water supply mechanism (5) that are used for carrying out water supply to the inside of pipeline (401) are provided with to the front of carrying frame (1), water supply mechanism (5) are including setting firmly in the positive fixed case (501) of carrying frame (1) to and slip setting is at sealed stripper plate (502) of fixed case (501) inner wall, below the tip of first pivot (201) extends to the inside of fixed case (501) and has set firmly first conical gear (503), the inside wall rotation of fixed case (501) is provided with reciprocating screw (504), and reciprocating screw (504)'s surface set firmly second conical gear (505) with first conical gear (503) intermeshing, water supply mechanism (5) are still including the slide (506) that are used for carrying out propelling movement to sealed stripper plate (502) of sliding setting at fixed case (501) inner wall, screw hole with reciprocating screw (504) surface threaded connection is seted up on the surface of slide (506).

2. A mining rubble safety conveyor according to claim 1, wherein: the upper surface of fixed case (501) inlays and is equipped with outlet pipe (507) with installation pipe intercommunication, the bottom of outlet pipe (507) extends to the interior bottom of fixed case (501), and the surface of outlet pipe (507) is provided with play water check valve (508).

3. A mining rubble safety conveyor according to claim 1, wherein: the side of fixed case (501) is inlayed and is equipped with inlet tube (509), and the tip of inlet tube (509) is connected with the hose with outside water tank intercommunication through quick-operation joint, the surface of inlet tube (509) is provided with water inlet check valve (5010).

4. A mining rubble safety conveyor according to claim 1, wherein: two symmetrical ejector rods (5011) are fixedly arranged on the side face of the sliding plate (506), and one end, far away from the sliding plate (506), of each of the two ejector rods (5011) is fixedly connected with the surface of the sealing extrusion plate (502).

5. A mining rubble safety conveyor according to claim 1, wherein: two limiting plates (5012) used for limiting the moving range of the sliding plate (506) are fixedly arranged on the surface of the reciprocating screw (504).

6. A mining rubble safety conveyor according to any one of claim 1, wherein: the second conveying mechanism (3) comprises two symmetrical second rotating shafts (301) which are rotatably arranged on the inner wall of the conveying frame (1), and second conveying rollers (302) sleeved on the surfaces of the two second rotating shafts (301), conveying belts (303) are sleeved on the surfaces of the two second conveying rollers (302), the conveying belts (303) are located inside the meshed conveying belts (203), second motors (304) used for driving the second rotating shafts (301) to rotate are arranged on the back of the conveying frame (1), and a plurality of second baffles (305) are fixedly arranged on the surfaces of the conveying belts (303) at equal intervals.

7. The mining rubble safety conveyor of claim 6, wherein: the conveying frame is characterized in that a first discharging opening (6) for discharging large-particle broken stones conveyed by the mesh conveying belt (203) is formed in the lower surface of the top end of the conveying frame (1), and a second discharging opening (7) for discharging small-particle broken stones conveyed by the conveying belt (303) is formed in the front face and the back face of the conveying frame (1).

8. The mining rubble safety conveyor of claim 7, wherein: the inside of carrying frame (1) is provided with ejection of compact subassembly (8) corresponding with second feed opening (7), ejection of compact subassembly (8) are including setting firmly in ejection of compact board (801) of carrying frame (1) inner wall to and set firmly trapezoidal piece (802) at ejection of compact board (801) upper surface, rectangular channel has all been seted up to two inclined surfaces of trapezoidal piece (802), and the inner wall of two rectangular channels all rotates and is provided with ejection of compact board (803), the lower surface of ejection of compact board (803) has set firmly two ejection of compact springs (804), and the bottom of two ejection of compact springs (804) all with the interior bottom fixed connection of rectangular channel.

9. The mining rubble safety conveyor of claim 8, wherein: the discharging component (8) further comprises a cylindrical cavity formed in the trapezoid block (802) and a sliding block (805) arranged on the inner wall of the cylindrical cavity in a sliding mode, a fixing rod (806) is fixedly arranged on the inner wall of the cylindrical cavity, a sliding hole for the fixing rod (806) to slide is formed in the upper surface of the sliding block (805), a reset spring (807) is sleeved on the surface of the fixing rod (806), two ends of the reset spring (807) are fixedly connected with the lower surface of the sliding block (805) and the inner bottom wall of the cylindrical cavity respectively, two symmetrical pull ropes (808) are fixedly arranged on the surface of the sliding block (805), the other ends of the two pull ropes (808) are fixedly connected with the surfaces of the two ejection plates (803) respectively, sliding holes for the pull ropes (808) are formed in the inner walls of the rectangular groove and the cylindrical cavity, an elastic metal pressing piece (809) corresponding to the second baffle (305) is fixedly arranged on the upper surface of the sliding block (805), and a limiting opening for the elastic metal pressing piece (809) to slide is formed in the front of the trapezoid block (802).

10. A method for safely conveying crushed stone in mining, which is characterized by comprising the following steps:

s1, feeding crushed stone: adding broken stone at a mining position in a mine to the bottom end of a conveying frame through manual or mechanical equipment;

s2, conveying broken stone: realizing stable, safe and efficient conveying of broken stone;

s3, stone crushing and blanking: and blanking is carried out through the first blanking port and the second blanking port.