Bridge type transfer conveyor for coal mining

Abstract

The invention discloses a bridge type transfer conveyor for coal mining, relates to the technical field of conveying, and aims to solve the technical problem that the capacity of pretreating coal briquettes before conveying is weak in the limited space of a thin coal seam. The bridge type transfer conveyor comprises a bridge type transfer conveyor main body, and a coal feeding mechanism is arranged at the lower end of the bridge type transfer conveyor main body; a coal discharging port is formed in the high end of the bridge type transfer conveyor body, the coal feeding mechanism comprises two fixed side plates, the two fixed side plates are of a symmetrical structure and are connected through a screening plate and a feeding plate, the screening plate is arranged above the feeding plate, the side wall of the screening plate is connected with an impurity leading-out plate, and the impurity leading-out plate is connected with a coal discharging port. A feeding frame is arranged at the top of the fixed side plate, a coal briquette crushing assembly is arranged between the screening plate and the feeding plate, and an impurity removing assembly is arranged on the side wall of the coal briquette crushing assembly. The coal crushing and impurity removing device has the advantages that coal can be subjected to pre-crushing and impurity removing operation, and the coal pretreatment capacity is improved.

Description

Technical Field

[0001] The present invention relates to the field of conveying technology, and more specifically, to a bridge-type transfer conveyor for coal mining. Background Art

[0002] The bridge transfer conveyor for thin coal seam mining is a device specially used to transport coal in a thin coal seam environment with a thickness of less than 1.3 meters. It moves coal and other materials in the middle trough from the tail to the head of the machine, thereby realizing continuous transportation of coal.

[0003] When mining thin coal seams, the coal mining machine cuts the coal body on the coal wall to make it loose coal blocks, which are then loaded into the front end of the bridge transfer conveyor and transported out from the rear end. Due to the limited space in the thin coal seam, the space of the coal mining tunnel is also limited, and the mechanical equipment contained in the coal mining tunnel is also limited, which limits the size of the bridge transfer conveyor. When pre-processing the coal blocks before transportation, workers are usually arranged near the feed port of the bridge transfer conveyor to manually pick out large pieces of gangue, branches and other impurities in the coal flow. Workers visually inspect and pick out obvious impurities from the coal flow to prevent them from entering the bridge transfer conveyor, causing blockage or affecting the transportation effect. The manual picking method is prone to omissions, and it is difficult to crush large pieces of coal, resulting in a weak ability to pre-process the coal blocks before transportation. In view of this, we propose a bridge transfer conveyor for coal mining. Summary of the invention

[0004] The object of the present invention is to provide a bridge type transfer conveyor for coal mining, so as to solve the technical problem of the weak ability to pre-treat coal blocks before transportation in the limited space of thin coal seams.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a bridge-type transfer conveyor for coal mining, comprising a bridge-type transfer conveyor main body, a coal feeding mechanism is arranged at the lower end of the bridge-type transfer conveyor main body, a coal discharge port is arranged at the high end of the bridge-type transfer conveyor main body, the coal feeding mechanism comprises two fixed side plates, the two fixed side plates are mutually symmetrical structures, the two fixed side plates are connected by a screening plate and a feeding plate, the screening plate is arranged above the feeding plate, the side wall of the screening plate is connected to an impurity outlet plate, a feeding frame is arranged on the top of the fixed side plate, the screening plate is used to screen the coal, so that large pieces of coal and impurities are kept The coal remains on the top of the screening plate, so that the crushed coal enters the top of the feed plate, and then is transported through the bridge-type transfer conveyor body. A coal block crushing assembly is arranged between the screening plate and the feed plate, and a dust removal assembly is arranged on the side wall of the coal block crushing assembly; the coal block crushing assembly has a reciprocating translational motion state, and the coal block crushing assembly can crush the coal on the top of the screening plate during the reciprocating translational motion, so that the block coal is broken into multiple pieces of crushed coal. At the same time, the coal block crushing assembly can drive the dust removal assembly to repeatedly move the impurities on the top of the screening plate to the top of the impurity outlet plate during the reciprocating translational motion to perform dust removal operations.

[0006] Preferably, the top of the screening plate is composed of a plurality of strip plates, a screening channel is formed between every two of the strip plates, and the top of the strip plates is arranged as a circular arc convex structure; a guiding inclined block is connected to the top of the screening plate, and the side wall of the guiding inclined block is arranged as an inclined surface, and the guiding inclined block is used to shield the coal on the top of the screening plate; the impurity outlet plate is an arc curved plate-shaped structure, which is used to divert impurities away.

[0007] Preferably, the side wall of the fixed side plate is provided with a lower movable groove and an upper movable groove; the side wall of the fixed side plate is connected with a support frame and a support plate, the top surface of the support plate is provided with a wheel rail, and the top surface of the support frame is arranged with a multi-stage oil cylinder; the top of the lower movable groove is provided with a plurality of tooth openings, and the bottom of the lower movable groove is provided with an inclined structure; the upper movable groove is an inclined long strip groove, and the support plate is arranged at the groove opening of the upper movable groove.

[0008] Preferably, the coal crushing assembly includes a cylinder, the side wall of the cylinder is connected to a push frame through a plurality of inclined rods, and a plurality of pulleys are arranged inside the push frame; wherein the inclined rods are movably arranged in the upper movable groove; the push frame is slidingly engaged with the wheel rail through a plurality of pulleys; and the output end of the multi-stage cylinder is connected to the side wall of the push frame.

[0009] Preferably, a rotating column is movably arranged in the inner cavity of the cylinder, one end of the rotating column passes through the side wall of the cylinder and is movably arranged in the lower movable groove, one end of the rotating column is connected to a gear, and the gear is meshed with the toothed opening; The circumferential outer wall of the rotating cylinder is connected to multiple rotating plates 1 and multiple rotating plates 2; one side wall of the rotating plate is a ring-shaped concave-convex arc surface structure, the rotating plate 2 has the same structure as one side wall of the rotating plate, and the rotating plate 2 and the concave-convex arc surface structure of the rotating plate one side wall are staggered and distributed with each other; the multiple rotating plates 1 and the multiple rotating plates 2 are alternately arranged.

[0010] Preferably, a wheel groove is provided on one side wall of the rotating plate, and a first breaker rod is arranged above the rotating plate one, the first breaker rod passes through the top of the cylinder body and movably cooperates with the top of the cylinder body, the bottom of the first breaker rod is connected to a wheel frame, a rolling wheel is arranged in the wheel frame, and the rolling wheel is movably arranged in the wheel groove, a spring is sleeved on the circumferential outer wall of the first breaker rod, and the spring is arranged above the wheel frame; a second breaker rod is arranged above the rotating plate two, and the second breaker rod and the first breaker rod are arranged with the same structural components.

[0011] Preferably, the top of the first breaker bar is set as a conical structure, the circumferential outer wall of the first breaker bar is connected to a plurality of toothed plates, the second breaker bar has the same structure as the first breaker bar, the conical structure is used to penetrate and crush the coal, and the toothed plates are used to cut and crush the coal.

[0012] Preferably, the outer wall of the cylinder is connected to a plurality of support columns through a fixed plate, one end of the support column is connected to a material guide plate, the bottom of the support column is rotatably connected to an arc rod, and the bottom of the arc rod is connected to a feed scraper; wherein, the material guide plate is an arc curved plate structure, and the material guide plate is used to guide the coal falling from the screening plate into the front of the feed scraper when the coal block crushing assembly moves back and forth.

[0013] Preferably, the impurity removing assembly comprises a plurality of sliding ridges connected to the outer wall of the cylinder body, the side walls of the sliding ridges are provided with impurity removing rods, the side walls of the impurity removing rods are provided with T-shaped grooves, and the impurity removing rods are slidably engaged with the sliding ridges through the T-shaped grooves; there are a plurality of impurity removing rods, and every two impurity removing rods are connected by a guide rod.

[0014] Preferably, the impurity removal component also includes a guide plate connected to the inner wall of the fixed side plate, the guide plate side wall is provided with a guide groove, and one end of the guide rod is movably arranged in the guide groove; wherein, a to-be-determined groove is arranged in the guide groove, and a limiting plate is movably arranged on the inner wall of the guide groove, and the limiting plate is arranged in the to-be-determined groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention designs a coal feeding mechanism, and transmits the coal mined from the coal seam into the bridge transfer conveyor body for transportation through the coal feeding mechanism. The coal is crushed by the coal block crushing component in the coal feeding mechanism, so that the coal entering the bridge transfer conveyor body is in the form of loose fragments. The relatively obvious large impurities in the coal, such as branches and stones, are removed by the impurity removal component, which can effectively prevent the problem that large pieces of coal and impurities are easily caused to block the main body of the bridge transfer conveyor, so that the present invention can effectively pre-crush and remove impurities on the coal, and the broken coal can be easily transported by the bridge transfer conveyor body, thereby improving the stability and work efficiency of the bridge transfer conveyor body in coal transportation, and improving the ability to pre-treat the coal.

[0016] 2. The present invention also designs the concave and convex arc surface structures of the side walls of the rotating plate 1 and the rotating plate 2 to be distributed in an interlaced manner, so that multiple first crushing rods and multiple second crushing rods can perform alternate up and down reciprocating movements, and alternately crush the large pieces of coal retained above the screening channel, thereby improving the crushing effect. The cylinder body performs reciprocating translational motion under the screening plate, so that the first crushing rod and the second crushing rod can perform reciprocating translational motion when performing alternate crushing operations in the screening channel, thereby achieving comprehensive crushing operations on the coal above the screening channel, reducing the crushing blind area, and making the crushing effect more comprehensive.

[0017] 3. The present invention also sets the top of the first crushing rod and the second crushing rod as a conical structure, so that the first crushing rod and the second crushing rod are easier to insert into the coal, thereby realizing the crushing operation of the coal, and by connecting a toothed plate to the outer wall of the circumference of the first crushing rod and utilizing the serrated structure of the side wall of the toothed plate, the first crushing rod and the second crushing rod can form a cutting and crushing effect on the coal above the screening channel and stuck inside the screening channel during the lifting process, thereby further improving the crushing effect of the coal.

[0018] 4. In the present invention, when the cylinder moves forward, it can drive the guide rod to slide forward along the lower end slot section of the guide slot, so that the impurity removal rod always remains in the same position on the sliding convex strip until the guide rod is pushed out from one side of the limiting plate and enters the to-be-determined slot. The cylinder moves back, thereby driving the guide rod to slide upward from the other side of the limiting plate and enter the high end slot section of the guide slot, further driving the impurity removal rod to slide upward along the sliding convex strip and enter above the screening channel. As the cylinder continues to move back, it drives the guide rod to slide back along the high end slot section of the guide slot, so that the impurity removal rod always remains on the screening channel. The position of the impurity removal rod remains unchanged. When the impurity removal rod moves back with the cylinder, it can push larger impurities above the screening channel, such as branches and stones, to the top of the impurity lead-out plate, and the impurities slide out through the impurity lead-out plate. When the cylinder moves back to the end point, the guide rod moves from the high-end trough section to the low-end trough section of the guide trough, forming a cycle. When the cylinder moves forward, the coal crushing assembly crushes the coal above the screening channel, and the impurity removal rod is in a retracted state to avoid interference with the crushing operation. When the cylinder moves back, the impurity removal rod is in an extended state to remove the impurities above the screening channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of another viewing angle of the overall structure of the present invention; Figure 3 It is a schematic diagram of the structure of the coal feeding mechanism of the present invention; Figure 4 This is a schematic diagram of the split structure of the coal feeding mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the screening plate and the impurity extraction plate of the present invention; Figure 6 It is a schematic diagram of the cross-section structure of the coal feeding mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the coal block crushing assembly of the present invention; Figure 8 It is a schematic diagram of the coal block crushing assembly structure of the present invention from another perspective; Fig. 9 This is a schematic diagram of the internal structure of the coal block crushing assembly of the present invention; Fig.10 for Fig. 9 Schematic diagram of the structure of point A in FIG. Fig.11 This is a schematic diagram of the top structure of the first breaker bar of the present invention; Fig.12 It is a schematic diagram of the structure of the feeding scraper of the present invention; Fig.13 It is a schematic diagram of the structure of the impurity removal rod of the present invention; Fig.14It is a schematic diagram of the structure of the guide plate of the present invention; Fig.15 for Fig.14 Schematic diagram of the structure of point B in .

[0020] Description of the numbers in the figure: 1. Bridge-type transfer conveyor body; 2. Coal feeding mechanism; 3. Coal discharge port; 21. Fixed side plate; 22. Screening plate; 23. Feeding plate; 24. Impurity extraction plate; 25. Feeding frame; 26. Coal block crushing assembly; 27. Impurity removal assembly; 2101, lower movable groove; 2102, upper movable groove; 2103, support frame; 2104, support plate; 2105, wheel rail; 2106, multi-stage oil cylinder; 2107, tooth mouth; 2201, strip plate; 2202, guide ramp; 2601, cylinder; 2602, inclined rod; 2603, push frame; 2604, pulley; 2605, rotating column; 2606, gear; 2607, rotating plate 1; 2608, rotating plate 2; 2609, wheel groove; 2610, first crushing rod; 26101, toothed plate; 2611, wheel frame; 2612, rolling wheel; 2613, spring; 2614, second crushing rod; 2615, fixed plate; 2616, support column; 2617, guide plate; 2618, arc rod; 2619, feed scraper; 2701, sliding convex strip; 2702, debris removal rod; 2703, T-shaped groove; 2704, guide rod; 2705, guide plate; 2706, guide groove; 2707, limiting plate; 2708, to-be-determined groove. DETAILED DESCRIPTION

[0021] like Figures 1 to 15 As shown, the present invention relates to a bridge-type transfer conveyor for coal mining, comprising a bridge-type transfer conveyor body 1, a coal feeding mechanism 2 is arranged at the lower end of the bridge-type transfer conveyor body 1, and a coal discharge port 3 is arranged at the high end of the bridge-type transfer conveyor body 1, wherein the bridge-type transfer conveyor body 1 is the prior art in the example, and in a thin coal seam, after the coal seam is mined, the bridge-type transfer conveyor body 1 transports the coal at the lower end to the high end through the bridge-type transfer conveying mechanism inside it.

[0022] It usually utilizes the cooperation of the scraper chain and the driving device, and the motor drives the sprocket to rotate, and the sprocket drives the scraper chain to do a circular motion in the middle groove, and the scraper on the scraper chain pushes the coal and other materials to move from the tail to the head in the middle groove, thereby realizing the continuous transportation of coal. Of course, in addition to the cooperation of the scraper chain and the driving device for transportation, there is also a bridge-type transfer conveyor using belt transportation. Whether it is a bridge-type transfer conveyor using the cooperation of the scraper chain and the driving device or a bridge-type transfer conveyor using belt transportation, it is suitable for the present invention.

[0023] In the embodiment of the present invention, the coal feeding mechanism 2 includes two fixed side plates 21, the two fixed side plates 21 are symmetrical structures, the two fixed side plates 21 are connected by a screening plate 22 and a feeding plate 23, the screening plate 22 is arranged above the feeding plate 23, the side wall of the screening plate 22 is connected to an impurity lead-out plate 24, and a feeding frame 25 is arranged on the top of the fixed side plate 21; the screening plate 22 is used to screen the coal, so that large pieces of coal and impurities are retained on the top of the screening plate 22, and the crushed coal enters the top of the feeding plate 23, and then is transported through the bridge-type transfer conveyor body 1; a coal block crushing assembly 26 is arranged between the screening plate 22 and the feeding plate 23, and a de-impurity assembly 27 is arranged on the side wall of the coal block crushing assembly 26; the coal block crushing assembly 26 has a reciprocating translational motion state, and the coal block crushing assembly 26 can crush the coal on the top of the screening plate 22 during the reciprocating translational motion, so that the block coal The coal is crushed into a plurality of pieces of coal. At the same time, the coal block crushing component 26 can drive the impurity removal component 27 to repeatedly move the impurities on the top of the screening plate 22 to the top of the impurity outlet plate 24 during the reciprocating translational motion to perform the impurity removal operation. The present invention designs a coal feeding mechanism 2, and transmits the coal mined from the thin coal seam into the bridge transfer conveyor body 1 through the coal feeding mechanism 2 for transportation. The coal is crushed by the coal block crushing component 26 in the coal feeding mechanism 2, so that the coal entering the bridge transfer conveyor body 1 is in the form of loose pieces. The impurity removal component 27 is used to remove the more obvious large impurities in the coal, such as branches and stones, so that the problem of large pieces of coal and impurities easily causing blockage inside the bridge transfer conveyor body 1 can be effectively prevented, and the broken coal can be easily transported by the bridge transfer conveyor body 1, thereby improving the transportation efficiency.

[0024] As another embodiment of the present invention, the top of the screening plate 22 is composed of a plurality of strip plates 2201, a screening channel is formed between every two strip plates 2201, and the top of the strip plates 2201 is arranged as an arc convex structure, which can guide the coal into the screening channel, thereby reducing the problem of easy accumulation of coal on the top surface of the strip plates 2201; a guiding inclined block 2202 is connected to the top of the screening plate 22, and the side wall of the guiding inclined block 2202 is arranged as an inclined surface, and the guiding inclined block 2202 is used to shield the coal on the top of the screening plate 22; the impurity lead-out plate 24 is an arc curved plate-like structure, which is used to divert impurities out.

[0025] As another embodiment of the present invention, a lower movable groove 2101 and an upper movable groove 2102 are provided on the side wall of the fixed side plate 21; a support frame 2103 and a support plate 2104 are connected to the side wall of the fixed side plate 21; a wheel track 2105 is provided on the top surface of the support plate 2104; a multi-stage oil cylinder 2106 is arranged on the top surface of the support frame 2103; the multi-stage oil cylinder 2106 is a prior art in the example, also known as a telescopic hydraulic cylinder, which is a hydraulic cylinder with a multi-stage sleeve-shaped piston rod that can obtain a longer working stroke; a plurality of tooth openings 2107 are provided on the top of the lower movable groove 2101, and the bottom of the lower movable groove 2101 is provided with an inclined structure, which can effectively reduce the situation in which coal may be retained at the bottom of the lower movable groove 2101; the upper movable groove 2102 is an inclined long strip groove, and the function of the inclined long strip groove is to prevent coal from entering and causing blockage, and the support plate 2104 is arranged at the groove mouth of the upper movable groove 2102.

[0026] As another embodiment of the present invention, the coal block crushing assembly 26 includes a cylinder 2601, the side wall of the cylinder 2601 is connected to a push frame 2603 through a plurality of inclined rods 2602, and a plurality of pulleys 2604 are arranged inside the push frame 2603; wherein the inclined rods 2602 are movably arranged in the upper movable groove 2102; the push frame 2603 is slidably matched with the wheel rail 2105 through a plurality of pulleys 2604; the output end of the multi-stage oil cylinder 2106 is connected to the side wall of the push frame 2603; the present invention pushes the push frame 2603 to slide on the wheel rail 2105 through the operation of the multi-stage oil cylinder 2106, and the push frame 2603 drives the cylinder 2601 to move, and performs reciprocating telescopic motion through the output end of the multi-stage oil cylinder 2106, driving the cylinder 2601 to perform reciprocating translational motion under the screening plate 22; Furthermore, a rotating column 2605 is movably arranged in the inner cavity of the cylinder 2601, one end of the rotating column 2605 passes through the side wall of the cylinder 2601 and is movably arranged in the lower movable groove 2101, one end of the rotating column 2605 is connected to a gear 2606, and the gear 2606 is meshed and connected with the tooth mouth 2107; a plurality of rotating plates 1 2607 and a plurality of rotating plates 2 2608 are connected to the circumferential outer wall of the rotating column 2605; the side wall of the rotating plate 1 2607 is a ring-shaped concave-convex arc surface structure, and the rotating plate 2 2608 has the same structure as the side wall of the rotating plate 1 2607, and the concave-convex arc surface structures of the rotating plate 2 2608 and the side wall of the rotating plate 1 2607 are staggered with each other; a plurality of rotating plates 1 2607 and a plurality of rotating plates 2 2608 are alternately arranged, and the side wall of the rotating plate 1 2607 is provided with a wheel The first breaker bar 2610 is arranged above the rotating plate 1 2607, and the first breaker bar 2610 passes through the top of the cylinder 2601 and is movably matched with the top of the cylinder 2601. The bottom of the first breaker bar 2610 is connected to a wheel frame 2611, and a rolling wheel 2612 is arranged in the wheel frame 2611. The rolling wheel 2612 is movably arranged in the wheel groove 2609. The outer wall of the circumference of the first breaker bar 2610 is sleeved with a spring 2613, and the spring 2613 is arranged above the wheel frame 2611; the second breaker bar 2614 is arranged above the rotating plate 2608, and the second breaker bar 2614 is arranged with the same structural components as the first breaker bar 2610. The first breaker bar (2610) and the second breaker bar (2614) are arranged in the screening channel; Furthermore, the cylinder 2601 performs reciprocating translational motion under the screening plate 22, driving the rotating column 2605 to slide reciprocatingly in the lower movable groove 2101, further causing the gear 2606 to reciprocate along the tooth opening 2107, so that the gear 2606 rotates and moves, further driving the rotating column 2605 to perform reciprocating rotational motion in the lower movable groove 2101, and during the rotational movement of the rotating column 2605, the plurality of rotating plates 1 2607 and the plurality of rotating plates 2 2608 are driven to rotate, and the rolling wheel 2612 is affected by the annular concave-convex arc surface structure of the side wall of the rotating plate 1 2607, so that the rolling wheel 2612 and the wheel groove 2609 are relatively moved. During the sliding process, the rolling wheel 2612 reciprocates up and down in the vertical direction, further driving the first crushing rod 2610 to reciprocate up and down. Similarly, the second crushing rod 2614 also reciprocates up and down. Since the concave and convex arc surface structures of the side walls of the rotating plate 2608 and the rotating plate 1 2607 are staggered, the multiple first crushing rods 2610 and the multiple second crushing rods 2614 reciprocate up and down alternately. During the upward movement of the first crushing rod 2610 and the second crushing rod 2614, they can be inserted upward from the screening channel to crush the large pieces of coal retained above the screening channel, and the crushed coal falls from the screening channel. The present invention staggers the concave and convex arc structures of the side walls of the rotating plate 1 2607 and the rotating plate 2 2608 so that a plurality of first crushing rods 2610 and a plurality of second crushing rods 2614 can perform alternate up and down reciprocating movements to crush the large pieces of coal retained above the screening channel. The cylinder 2601 performs reciprocating translational motion below the screening plate 22 so that the first crushing rod 2610 and the second crushing rod 2614 can perform reciprocating translational movements while performing alternate crushing operations in the screening channel, thereby achieving comprehensive crushing operations on the coal above the screening channel, reducing the crushing blind area, and making the crushing effect more comprehensive.

[0027] As another embodiment of the present invention, the top of the first crushing rod 2610 is set to a conical structure, and a plurality of toothed plates 26101 are connected to the circumferential outer wall of the first crushing rod 2610, and the side wall of the toothed plate 26101 is a serrated structure. The second crushing rod 2614 has the same structure as the first crushing rod 2610, and the conical structure is used for piercing and crushing the coal, and the toothed plates 26101 are used for cutting and crushing the coal. The present invention sets the top of the first crushing rod 2610 and the second crushing rod 2614 to a conical structure, so that the first crushing rod 2610 and the second crushing rod 2614 are easier to insert into the coal, thereby realizing the crushing operation of the coal, and by connecting the toothed plate 26101 to the circumferential outer wall of the first crushing rod 2610 and utilizing the serrated structure of the side wall of the toothed plate 26101, the first crushing rod 2610 and the second crushing rod 2614 can form a cutting and crushing effect on the coal above the screening channel and stuck inside the screening channel during the lifting process, thereby further improving the crushing effect of the coal.

[0028] As another embodiment of the present invention, the outer wall of the cylinder 2601 is connected to a plurality of support columns 2616 through a fixed plate 2615, one end of the support column 2616 is connected to a guide plate 2617, the bottom of the support column 2616 is rotatably connected to an arc rod 2618, and the bottom of the arc rod 2618 is connected to a feed scraper 2619; wherein the guide plate 2617 is an arc curved plate-shaped structure, and the guide plate 2617 is used to guide the coal falling from the screening plate 22 into the front of the feed scraper 2619 when the coal block crushing assembly 26 moves back and forth; in the present invention, the coal falling from the screening channel of the screening plate 22 enters the top of the feed plate 2, and when the cylinder 2601 moves forward, it can drive the feed scraper 2619 to scrape forward, and the feed scraper 2619 scrapes the coal on the top of the feed plate 2 into the main body of the bridge-type transfer conveyor. 1, a part of the coal continuously falling in the screening channel of the screening plate 22 slides from the top of the cylinder 2601 into the bottom of the cylinder 2601, that is, into the top of the feed plate 2, and the other part slides into the bottom of the cylinder 2601 through the arc curved plate structure of the guide plate 2617, that is, into the top of the feed plate 2. When the cylinder 2601 moves back, the bottom of the feed scraper 2619 is hindered by the coal, so that the feed scraper 2619 rotates along the bottom of the support column 2616, and the bottom of the feed scraper 2619 loses the coal scraping function, which can avoid scraping the coal back, and then moves forward again through the cylinder 2601, driving the feed scraper 2619 to scrape the coal on the top of the feed plate 2 into the inside of the bridge-type transfer conveyor body 1 for transportation, and this cycle is repeated to achieve a continuous coal transportation effect.

[0029] As another embodiment of the present invention, the impurity removal component 27 includes a plurality of sliding ridges 2701 connected to the outer wall of the cylinder 2601, and the side wall of the sliding ridge 2701 is arranged with an impurity removal rod 2702, and the side wall of the impurity removal rod 2702 is provided with a T-shaped groove 2703, and the impurity removal rod 2702 slides with the sliding ridge 2701 through the T-shaped groove 2703; there are multiple impurity removal rods 2702, and every two impurity removal rods 2702 are connected by a guide rod 2704; the impurity removal component 27 also includes a guide plate 2705 connected to the inner wall of the fixed side plate 21, and the side wall of the guide plate 2705 is provided with a guide groove 2706, and the guide rod 2704 One end is movably arranged in the guide groove 2706; wherein the guide groove 2706 is a closed annular structure, the guide groove 2706 includes a high-end groove section and a low-end groove section, the high-end groove section and the low-end groove section are connected by an oblique groove section, a to-be-determined groove 2708 is arranged in the low-end groove section of the guide groove 2706, and a limiting plate 2707 is movably arranged on the inner side wall of the guide groove 2706, and the limiting plate 2707 is arranged in the to-be-determined groove 2708; in the present invention, when the cylinder 2601 moves forward, it can drive the guide rod 2704 to slide forward along the low-end groove section of the guide groove 2706, so that the impurity removal rod 2702 always remains on the sliding convex strip 27 01, until the guide rod 2704 is pushed out from one side of the limiting plate 2707 and enters the pending groove 2708, the cylinder 2601 moves back, thereby driving the guide rod 2704 to slide upward from the other side of the limiting plate 2707 and enter the high-end groove section of the guide groove 2706, further driving the impurity removal rod 2702 to slide upward along the sliding convex strip 2701 and enter the top of the screening channel. As the cylinder 2601 continues to move back, it drives the guide rod 2704 to slide back along the high-end groove section of the guide groove 2706, so that the impurity removal rod 2702 always remains in the position above the screening channel. The impurity removal rod 2702 follows the cylinder 2 During the backward movement of 601, larger impurities above the screening channel, such as branches and stones, can be pushed to the top of the impurity outlet plate 24, and the impurities slide out through the impurity outlet plate 24. When the cylinder 2601 moves back to the end point, the guide rod 2704 moves from the high-end slot section of the guide slot 2706 to the low-end slot section, forming a cycle, so that when the cylinder 2601 moves forward, the coal crushing assembly 26 crushes the coal above the screening channel, and the impurity removal rod 2702 is in a retracted state to avoid interference with the crushing operation. When the cylinder 2601 moves back, the impurity removal rod 2702 is in an extended state to remove impurities above the screening channel.

[0030] Working principle: This embodiment provides a bridge transfer conveyor for coal mining. When in use, the coal mined from the coal seam is put into the top of the screening plate 22 from the feeding frame 25. A part of the coal falls through the screening channel of the screening plate 22 and enters the top of the feed plate 2. When the cylinder 2601 moves forward, it can drive the feed scraper 2619 to scrape forward. The feed scraper 2619 scrapes the coal on the top of the feed plate 2 into the bridge transfer conveyor body 1 for transportation. A portion of the larger coal and impurities are screened on the top of the screening plate 22, and the output end of the multi-stage oil cylinder 2106 performs reciprocating telescopic motion, driving the cylinder 2601 to perform reciprocating translational motion below the screening plate 22, further driving the rotating column 2605 to perform reciprocating sliding in the lower movable groove 2101, further causing the gear 2606 to perform reciprocating motion along the tooth mouth 2107, so that the gear 2606 rotates and moves, further driving the rotating column 2605 to perform reciprocating rotation in the lower movable groove 2101 During the rotation and movement of the rotating column 2605, the plurality of rotating plates 1 2607 and the plurality of rotating plates 2 2608 are driven to rotate. The rolling wheel 2612 is affected by the annular concave-convex arc surface structure of the side wall of the rotating plate 1 2607, so that during the relative sliding between the rolling wheel 2612 and the wheel groove 2609, the rolling wheel 2612 reciprocates up and down in the vertical direction, further driving the first crushing rod 2610 to reciprocate up and down. Similarly, the second crushing rod 2614 also reciprocates up and down. Since the concave-convex arc surface structures of the rotating plate 2 2608 and the side wall of the rotating plate 1 2607 are staggered with each other, the plurality of first crushing rods 2610 and the plurality of second crushing rods 2614 reciprocate up and down alternately. During the upward movement of the first crushing rod 2610 and the second crushing rod 2614, they can be inserted upward from the screening channel to crush the large pieces of coal retained above the screening channel, and the crushed coal falls from the screening channel.At the same time, when the cylinder 2601 moves forward, it can drive the guide rod 2704 to slide forward along the lower end of the guide groove 2706, so that the impurity removal rod 2702 always remains in the same position on the sliding convex strip 2701, until the guide rod 2704 is pushed out from one side of the limiting plate 2707 and enters the undetermined groove 2708, and the cylinder 2601 moves back, thereby driving the guide rod 2704 to slide upward from the other side of the limiting plate 2707 and enter the high end of the guide groove 2706, further driving the impurity removal rod 2702 to slide upward along the sliding convex strip 2701 and enter the screening channel As the cylinder 2601 continues to move back, the guide rod 2704 is driven to slide back along the high-end slot section of the guide slot 2706, so that the impurity removal rod 2702 always remains at the position above the screening channel. As the impurity removal rod 2702 moves back with the cylinder 2601, it can push larger impurities above the screening channel, such as branches and stones, to the top of the impurity lead-out plate 24, and the impurities slide out through the impurity lead-out plate 24. When the cylinder 2601 moves back to the end point, the guide rod 2704 moves from the high-end slot section of the guide slot 2706 to the low-end slot section, forming a cyclic impurity removal operation. ;

[0031] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A bridge type transfer conveyor for coal mining, characterized in that: It comprises a bridge-type transfer conveyor body (1), a coal feeding mechanism (2) being arranged at the lower end of the bridge-type transfer conveyor body (1), and a coal discharge port (3) being arranged at the upper end of the bridge-type transfer conveyor body (1); The coal feeding mechanism (2) comprises two fixed side plates (21), the two fixed side plates (21) are symmetrical structures, the two fixed side plates (21) are connected via a screening plate (22) and a feeding plate (23), the screening plate (22) is arranged above the feeding plate (23), the side wall of the screening plate (22) is connected to an impurity outlet plate (24), and a feeding frame (25) is arranged on the top of the fixed side plate (21); The screening plate (22) is used to screen the coal, so that large pieces of coal and impurities are retained on the top of the screening plate (22), and the crushed coal enters the top of the feed plate (23), and then is transported through the bridge-type transfer conveyor body (1); A coal crushing assembly (26) is arranged between the screening plate (22) and the feed plate (23), and a debris removal assembly (27) is arranged on a side wall of the coal crushing assembly (26); The coal crushing component (26) has a reciprocating translational motion state. During the reciprocating translational motion, the coal crushing component (26) can crush the coal on the top of the screening plate (22) to break the lump coal into a plurality of pieces of coal. At the same time, during the reciprocating translational motion, the coal crushing component (26) can drive the impurity removal component (27) to repeatedly and continuously move the impurities on the top of the screening plate (22) to the top of the impurity outlet plate (24) to perform the impurity removal operation.

2. A bridge type transfer conveyor for coal mining according to claim 1, characterized in that: The top of the screening plate (22) is composed of a plurality of strip plates (2201), a screening channel is formed between every two of the strip plates (2201), and the top of the strip plates (2201) is configured as an arc convex structure; A guide inclined block (2202) is connected to the top of the screening plate (22); a side wall of the guide inclined block (2202) is arranged as an inclined surface; and the guide inclined block (2202) is used to shield the coal on the top of the screening plate (22); The impurity outlet plate (24) is an arc-shaped curved plate structure and is used to guide impurities out.

3. A bridge type transfer conveyor for coal mining according to claim 2, characterized in that: The side wall of the fixed side plate (21) is provided with a lower movable groove (2101) and an upper movable groove (2102); The side wall of the fixed side plate (21) is connected to a support frame (2103) and a support plate (2104); a wheel track (2105) is arranged on the top surface of the support plate (2104); and a multi-stage oil cylinder (2106) is arranged on the top surface of the support frame (2103); The top of the lower movable groove (2101) is provided with a plurality of tooth openings (2107), and the bottom of the lower movable groove (2101) is provided with an inclined surface structure; The upper movable groove (2102) is an inclined long strip groove, and the support plate (2104) is arranged at the groove opening of the upper movable groove (2102).

4. A bridge type transfer conveyor for coal mining according to claim 3, characterized in that: The coal crushing assembly (26) comprises a cylinder (2601), the side wall of the cylinder (2601) is connected to a push frame (2603) via a plurality of inclined rods (2602), and a plurality of pulleys (2604) are arranged inside the push frame (2603); Wherein, the oblique rod (2602) is movably arranged in the upper movable groove (2102); The push frame (2603) is slidably matched with the wheel rail (2105) via a plurality of pulleys (2604); The output end of the multi-stage oil cylinder (2106) is connected to the side wall of the push frame (2603).

5. A bridge type transfer conveyor for coal mining according to claim 4, characterized in that: A rotating column (2605) is movably arranged in the inner cavity of the cylinder (2601), one end of the rotating column (2605) passes through the side wall of the cylinder (2601) and is movably arranged in the lower movable groove (2101), one end of the rotating column (2605) is connected to a gear (2606), and the gear (2606) is meshedly connected with the tooth opening (2107); The outer circumferential wall of the rotating column (2605) is connected to a plurality of rotating plates 1 (2607) and a plurality of rotating plates 2 (2608); The side wall of the rotating plate 1 (2607) is a ring-shaped concave-convex arc surface structure, the rotating plate 2 (2608) has the same structure as the side wall of the rotating plate 1 (2607), and the concave-convex arc surface structures of the rotating plate 2 (2608) and the rotating plate 1 (2607) are staggered with each other; The plurality of rotating plates one (2607) and the plurality of rotating plates two (2608) are arranged alternately with each other.

6. A bridge type transfer conveyor for coal mining according to claim 5, characterized in that: A wheel groove (2609) is formed on the side wall of the rotating plate 1 (2607); a first breaker rod (2610) is arranged above the rotating plate 1 (2607); the first breaker rod (2610) passes through the top of the cylinder (2601) and movably cooperates with the top of the cylinder (2601); a wheel frame (2611) is connected to the bottom of the first breaker rod (2610); a rolling wheel (2612) is arranged in the wheel frame (2611); the rolling wheel (2612) is movably arranged in the wheel groove (2609); a spring (2613) is sleeved on the outer circumferential wall of the first breaker rod (2610); and the spring (2613) is arranged above the wheel frame (2611); A second crushing rod (2614) is arranged above the second rotating plate (2608), and the second crushing rod (2614) is arranged with the same structural components as the first crushing rod (2610).

7. A bridge type transfer conveyor for coal mining according to claim 6, characterized in that: The top of the first crushing rod (2610) is set as a conical structure, and the outer wall of the circumference of the first crushing rod (2610) is connected to a plurality of toothed plates (26101). The second crushing rod (2614) has the same structure as the first crushing rod (2610). The first crushing rod (2610) and the second crushing rod (2614) are arranged in the screening channel. The conical structure is used to penetrate and crush the coal, and the toothed plates (26101) are used to cut and crush the coal.

8. A bridge type transfer conveyor for coal mining according to claim 7, characterized in that: The outer wall of the cylinder (2601) is connected to a plurality of support columns (2616) via a fixing plate (2615); one end of the support column (2616) is connected to a material guide plate (2617); the bottom of the support column (2616) is rotatably connected to an arc-shaped rod (2618); the bottom of the arc-shaped rod (2618) is connected to a feed scraper (2619); and the feed scraper (2619) is arranged on the top of the feed plate (23); The guide plate (2617) is a circular arc curved plate structure, and the guide plate (2617) is used to guide the coal falling from the screening plate (22) into the front of the feed scraper (2619) when the coal crushing assembly (26) moves back and forth.

9. A bridge type transfer conveyor for coal mining according to claim 8, characterized in that: The impurity removal component (27) comprises a plurality of sliding convex strips (2701) connected to the outer wall of the cylinder (2601); a impurity removal rod (2702) is arranged on the side wall of the sliding convex strip (2701); a T-shaped groove (2703) is formed on the side wall of the impurity removal rod (2702); and the impurity removal rod (2702) is slidably matched with the sliding convex strip (2701) via the T-shaped groove (2703); There are a plurality of impurity removal rods (2702), and every two impurity removal rods (2702) are connected via a guide rod (2704). The impurity removal rods (2702) are arranged below the screening channel.

10. A bridge type transfer conveyor for coal mining according to claim 9, characterized in that: The impurity removal component (27) further comprises a guide plate (2705) connected to the inner side wall of the fixed side plate (21), the side wall of the guide plate (2705) being provided with a guide groove (2706), and one end of the guide rod (2704) being movably arranged in the guide groove (2706); The guide groove (2706) is a closed annular structure, and the guide groove (2706) includes a high-end groove section and a low-end groove section, and the high-end groove section and the low-end groove section are connected by an oblique groove section. A to-be-determined groove (2708) is arranged in the low-end groove section of the guide groove (2706), and a limiting plate (2707) is movably arranged on the inner side wall of the guide groove (2706), and the limiting plate (2707) is arranged in the to-be-determined groove (2708).

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