A tripper for coal production

Abstract

A transfer machine for coal production, relating to the field of transfer machines, includes a transfer machine body with two conveyor chains mounted on it. Multiple scraper strips are mounted on the two conveyor chains, and baffles are installed on the transfer machine body. It also includes a pressure-bearing scraping device. It should be noted that in this invention, when a large amount of coal falls onto the transfer machine body, the scraper strips move to push and disperse the excess coal, preventing damage to the scraper strips and conveyor chains due to excessive pressure caused by a large amount of coal. If the weight of the coal is too great, the active locking frame is engaged with the baffle, thereby supporting the top side of the transfer machine body through multiple rotating push rods, preventing the entire weight of the coal from directly pressing on the scraper strips and conveyor chains and causing damage. Furthermore, as the conveyor chains move, the lateral swing of the transverse brush frame cleans the conveyor chains, preventing excessive impurities adhering to the conveyor chains from affecting coal conveying.

Description

Technical Field

[0001] This invention relates to the field of transfer machine technology, and more particularly to a transfer machine for coal production. Background Technology

[0002] The full name of the transfer conveyor is scraper transfer conveyor for roadways. It is a bridge-type scraper conveyor installed in the section transport roadway at the lower exit of the working face in a mine. During operation, one end connects to the conveyor at the working face, and the other end connects to the tail of the belt conveyor. Furthermore, in the three-machine system of large-scale fully mechanized mining, the transfer conveyor's role is to transfer the coal transported by the scraper conveyor at the mining face, raised from the roadway floor, and then transferred to the belt conveyor.

[0003] It should be noted that when the transfer conveyor transports coal, it uses a drive motor to drive two conveyor chains, which in turn drive multiple scraper blades to move and transport the coal that falls onto the transfer conveyor. However, coal mining is not uniform. When a large amount of coal falls onto the working face, causing the transfer conveyor to be overloaded, the lack of any unblocking measures causes the conveyor chains and scraper blades to be subjected to enormous pressure, which can easily lead to chain breakage or scraper blade damage, thus requiring the transfer conveyor to be shut down for maintenance. In addition, the lack of any cleaning measures during use allows stones, coal, or other foreign objects to easily get stuck on the chains, causing excessive wear on the conveyor chains or the transfer conveyor, which can also damage the transfer conveyor and interrupt coal mining operations. Summary of the Invention

[0004] The purpose of this invention is to provide a transfer machine for coal production to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A transfer machine for coal production includes a transfer machine body, on which two conveyor chains are mounted, and multiple scraper strips are mounted on the two conveyor chains. A baffle is also mounted on the transfer machine body. It also includes a pressure-bearing scraping device, which is installed on the transfer machine body and is used to support and protect the multiple scraper strips. The pressure-bearing scraping device includes scraping strips, which are rotatably installed on the transfer machine body. The scraping strips rotate to scrape off the coal. Each of the multiple scraper strips has a pressure-bearing groove, and a pressure-bearing shell is movably installed in each of the multiple pressure-bearing grooves. Multiple pressure-bearing springs are installed on the inner wall of the pressure-bearing grooves, and the multiple pressure-bearing springs are all installed on the pressure-bearing shells. The pressure-bearing shells are drively connected to the scraper strips. The downward movement of the pressure-bearing shells is used to drive the scraper strips to rotate. Multiple rotating push rods are movably installed on the transfer machine body, and the multiple rotating push rods are movably installed on the scraper strips. It also includes a locking protection device, which is installed on the pressure-bearing scraping device and is used to lock the pressure-bearing scraping device on the baffle. The locking protection device includes multiple active locking frames, which are rotatably installed on the bottom side of the scraping strip. Push-locking blocks are movably installed on both sides of the active locking frames. The baffle has multiple locking holes, and the active locking frames are respectively inserted into the multiple locking holes to lock the scraping strip. The two push-locking blocks are unfolded to lock the active locking frames on the baffle.

[0006] Furthermore, in a preferred embodiment of the present invention, the pressure scraping device further includes an integrated pusher frame, which is movably installed inside the transfer machine body, and two active rotating shafts are installed on the rotating push rod, which are rotatably installed inside the transfer machine body; A push plate is installed on the active rotating shaft. The integrated push frame moves to push the push plate to rotate, thereby driving the rotating push rod to rotate.

[0007] Furthermore, in a preferred embodiment of the present invention, the transfer machine body is provided with a plurality of push slots, and the plurality of active rotating shafts are respectively rotatably installed in the plurality of push slots; A torsion spring is installed on the inner wall of the drive groove, and the torsion spring is mounted on the drive shaft; A pusher seat is rotatably mounted on another of the said active rotating shafts, and the pusher seat is mounted on the scraping strip.

[0008] Furthermore, in a preferred embodiment of the present invention, two downward pressing plates are movably mounted on the scraper strip, and a driving pusher is mounted on one of the downward pressing plates. The driving pusher moves to push the integrated pusher to move. Rotating downward pressure rods are rotatably mounted on both sides of the two downward pressure plates, and rotating seats are rotatably mounted on the two rotating downward pressure rods. The rotating seats are mounted on the scraper strips.

[0009] Furthermore, in a preferred embodiment of the present invention, a synchronous rotating groove is provided on the rotating seat, and two synchronous rotating shafts are installed on the rotating pressing rod. One synchronous rotating shaft is rotatably installed on the pressing driving plate, and the other synchronous rotating shaft is rotatably installed in the synchronous rotating groove. A reset torsion spring is installed on the inner wall of the synchronous rotating groove, and the reset torsion spring is mounted on the synchronous rotating shaft.

[0010] Furthermore, in a preferred embodiment of the present invention, a driving groove is provided on the bottom side of the pressing driving plate, and a pressing limiting frame is slidably installed in the driving groove; The scraper bar has two vertical grooves, and the downward pressure limiting frame is slidably installed in the vertical grooves.

[0011] Furthermore, in a preferred embodiment of the present invention, the locking protection device further includes a plurality of positioning shafts, all of which are mounted on the bottom side of the scraping strip, and each of the plurality of active locking frames is provided with a drive slot, and the plurality of positioning shafts are rotatably mounted in the plurality of drive slots respectively; A drive torsion spring is mounted on the positioning shaft, and the drive torsion spring is mounted on the inner wall of the drive rotary groove.

[0012] Furthermore, in a preferred embodiment of the present invention, both sides of the active locking frame are provided with outward push grooves, and the two outward push locking blocks are respectively slidably installed in the two outward push grooves; An outward push spring is installed on the inner wall of the outward push groove, and the outward push spring is installed on the outward push lock block; The transfer machine is equipped with multiple blocking plates, which are used to block the active locking frame.

[0013] Furthermore, in a preferred embodiment of the present invention, a chain cleaning device is also included. The chain cleaning device is installed on the transfer machine body and is used to perform rotational cleaning on the conveyor chain. The chain cleaning device includes multiple transverse brush frames, which are slidably mounted on multiple scraper strips. The transverse brush frames move to clean the conveyor chain.

[0014] Furthermore, in a preferred embodiment of the present invention, the chain cleaning device further includes a plurality of pushing protrusions, which are respectively installed on the inner walls of both sides of the transfer machine body. Each of the plurality of transverse brush frames is equipped with a pressing push plate, which is pressed by the pushing protrusions to drive the transverse brush frame to move. The scraper bar has two transverse sliding grooves, and the two transverse brush holders are slidably installed in the two transverse sliding grooves respectively. The transverse brush holders are equipped with a return spring, which is installed on the inner wall of the transverse sliding groove.

[0015] The beneficial effects of the transfer machine for coal production proposed in this invention are: In this invention, by setting up a pressure scraping device, when the conveyor chain moves and drives multiple scraper bars to move, thereby conveying coal, the coal presses against the pressure shell and moves downward, which in turn causes the rotating push rod to rotate and drive the push seat to rotate through another active rotating shaft. The push seat drives the scraper bars to move, and when multiple rotating push rods rotate, they drive the scraper bars to move laterally, pushing and dispersing excess coal, thus avoiding damage to the scraper bars and conveyor chain due to excessive pressure caused by a large amount of coal.

[0016] Furthermore, in this invention, by setting up a locking protection device, if the weight of the coal is too large, causing the scraper bar to move excessively, the scraper bar will drive multiple active locking frames to disengage from the blocking plate. Then, under the rebound force of multiple drive torsion springs, the active locking frames will rotate, and under the drive of the scraper bar, the active locking frames will be inserted into the locking holes. At the same time, the two outward pushing locking blocks will be squeezed and retracted into the two outward pushing grooves, causing the two outward pushing springs to be stressed. Therefore, under the continuous movement of the scraper bar, the active locking frames will pass through the locking holes. At this time, under the rebound force of the two outward pushing springs, the two outward pushing locking blocks will pop out, causing the active locking frames to be stuck on the baffle plate. This achieves the support of the top side of the transfer machine body by multiple rotating push rods, preventing all the weight of the coal from directly pressing on the scraper bar and conveyor chain and causing damage.

[0017] Furthermore, in this invention, by setting up a chain cleaning device, when the conveyor chain moves and drives multiple scraper strips to move, it drives two transverse brush frames to move, causing the extrusion push plate to be squeezed by the push protrusion, thereby causing the extrusion push plate to drive the transverse brush frames to move laterally. The transverse brush frames slide horizontally in the transverse sliding groove, and the return spring is stressed. When the scraper strips continue to move, the extrusion push plate disengages from the push protrusion, and then the transverse brush frames are reset under the rebound force of the return spring. This realizes the transverse swing of the transverse brush frames to clean the conveyor chain, avoiding the impact of coal conveying due to too many impurities adhering to the conveyor chain. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of a transfer machine for coal production provided in an embodiment of the present invention; Figure 2 A partial structural schematic diagram of a transfer conveyor for coal production provided in an embodiment of the present invention; Figure 3 A transfer machine for coal production is provided as an embodiment of the present invention. Figure 2 A schematic diagram of the structure of part A; Figure 4 This is a partial cross-sectional view of the connection between the push plate and the drive push frame of a transfer machine for coal production, provided in an embodiment of the present invention. Figure 5 This is a cross-sectional structural diagram showing the connection between the pressure drive plate and the pressure limiting frame of a transfer machine used in coal production, as provided in an embodiment of the present invention. Figure 6 This is a cross-sectional structural diagram showing the connection between the rotating pressure rod and the rotating seat of a transfer machine used in coal production, as provided in an embodiment of the present invention. Figure 7 A partial structural diagram of the connection between the rotating push rod and the pushing plate of a transfer machine for coal production, provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the connection between the active locking frame and the external locking block of a transfer machine for coal production, provided by an embodiment of the present invention. Figure 9 This is a cross-sectional structural diagram showing the connection between the active locking frame and the positioning shaft of a transfer machine used in coal production, as provided in an embodiment of the present invention. Figure 10 This is a cross-sectional structural diagram showing the connection between the active locking frame and the external locking block of a transfer machine used in coal production, as provided in an embodiment of the present invention. Figure 11 A partial structural diagram illustrating the connection between a pushing protrusion and an extrusion pusher plate, etc., in a transfer machine for coal production, provided as an embodiment of the present invention. Figure 12 This is a partial cross-sectional view of the connection between the pressure shell and the transverse brush frame of a transfer machine used in coal production, as provided in an embodiment of the present invention.

[0019] In the diagram: 1-Transfer machine body; 2-Conveyor chain; 3-Scraper bar; 4-Baffle; 5-Pressure scraping device; 501-Scraping bar; 502-Rotating push rod; 503-Push seat; 504-Drive shaft; 505-Push chute; 506-Push torsion spring; 507-Push plate; 508-Integrated push frame; 509-Drive push frame; 510-Rotating downward pressure rod; 511-Rotating seat; 512-Downward pressure drive plate; 513-Drive slide; 514-Downward pressure limiting frame; 515-Synchronous shaft; 516-Synchronous chute; 5 17-Reset torsion spring; 518-Pressure housing; 519-Pressure groove; 520-Pressure spring; 521-Vertical slide groove; 6-Locking protection device; 601-Active locking frame; 602-Drive rotating groove; 603-Positioning shaft; 604-Drive torsion spring; 605-Blocking plate; 606-Push groove; 607-Push locking block; 608-Push spring; 609-Locking hole; 7-Chain cleaning device; 701-Horizontal brush holder; 702-Horizontal slide groove; 703-Pushing protrusion; 704-Extrusion push plate; 705-Reset spring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] Furthermore, in the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "perpendicular" do not imply that components must be absolutely vertical, but rather that they can be slightly tilted. For example, "vertical" simply means that its direction is more vertical relative to "horizontal," not that the structure must be completely vertical, but can be slightly tilted.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Please refer to the attached instruction manual. Figures 1-12 The present invention provides a transfer machine for coal production, which includes a transfer machine body 1, two conveyor chains 2 are installed on the transfer machine body 1, a plurality of scraper strips 3 are installed on the two conveyor chains 2, and a baffle 4 is installed on the transfer machine body 1.

[0027] Further, please refer to the appendix to the instruction manual. Figures 2-7The present invention provides a transfer machine for coal production, which further includes a pressure-bearing scraping device 5. The pressure-bearing scraping device 5 is installed on the transfer machine body 1 and is used to support and protect multiple scraper bars 3. Specifically, the pressure-bearing scraping device 5 includes scraper bars 501, which are rotatably installed on the transfer machine body 1. The scraper bars 501 rotate to scrape off coal. Each of the multiple scraper bars 3 has a pressure-bearing groove 519. Each of the multiple pressure-bearing grooves 519 has a pressure-bearing shell 518 movably installed in it. Multiple pressure-bearing springs 520 are installed on the inner wall of the pressure-bearing grooves 519. The multiple pressure-bearing springs 520 are all installed on the pressure-bearing shells 518. The pressure-bearing shells 518 are connected to the scraper bars 501 in a transmission manner. The pressure-bearing shells 518 move downward to drive the scraper bars 501 to rotate. Multiple rotating push rods 502 are movably installed on the transfer machine body 1. The multiple rotating push rods 502 are movably installed on the scraper bars 501. It should be noted that in this embodiment of the invention, when a large amount of coal falls, the coal presses down on the pressure shell 518, causing it to move downwards. The pressure shell 518 moves within the pressure groove 519, causing multiple pressure springs 520 to be stressed. The downward movement of the pressure shell 518 compresses the two downward pressure driving plates 512, thereby driving the scraper strip 501 to move and push away the excess coal, thus preventing the scraper strip 3 and the conveyor chain 2 from being damaged due to excessive pressure caused by a large amount of coal.

[0028] More specifically, in this embodiment of the invention, a locking protection device 6 is also included. The locking protection device 6 is installed on the pressure-bearing scraping device 5 and is used to lock the pressure-bearing scraping device 5 onto the baffle 4. The locking protection device 6 includes multiple active locking frames 601, which are rotatably installed on the bottom side of the scraping strip 501. Push-out locking blocks 607 are movably installed on both sides of the active locking frame 601. Multiple locking holes 609 are provided on the baffle 4. The active locking frames 601 are respectively inserted into the multiple locking holes 609 to lock the scraping strip 501. The two push-out locking blocks 607 are unfolded to lock the active locking frame 601 onto the baffle 4. It should be noted that, in this embodiment of the invention, when the scraping strip 501 is excessively squeezed and moved, the scraping strip 501 drives multiple active locking frames 601 to disengage from the blocking plate 605. Then, under the rebound force of multiple driving torsion springs 604, the active locking frames 601 rotate, and under the drive of the scraping strip 501, the active locking frames 601 are inserted into the locking hole 609, thereby causing the two outward pushing locking blocks 607 to be squeezed and retracted into the two outward pushing grooves 606, while the two outward pushing springs 608 are subjected to force.

[0029] It should be further explained that as the scraper bar 501 continues to move, the active locking frame 601 passes through the locking hole 609. At this time, the rebound force of the two outward push springs 608 causes the two outward push locking blocks 607 to pop out, thereby causing the active locking frame 601 to be locked on the baffle 4. This enables the top side of the transfer machine body 1 to be supported by multiple rotating push rods 502, preventing all the weight of the coal from directly pressing on the scraper bar 3 and the conveyor chain 2 and causing damage.

[0030] Please continue to refer to the instruction manual appendix. Figures 2-7 Furthermore, the transfer machine for coal production provided in this embodiment of the invention includes an integrated pusher 508, which is movably installed inside the transfer machine body 1. Two active rotating shafts 504 are installed on the rotating push rod 502, and the active rotating shafts 504 are rotatably installed inside the transfer machine body 1. Furthermore, a pusher plate 507 is installed on the active rotating shaft 504. The integrated pusher frame 508 moves to push the pusher plate 507 to rotate, thereby driving the rotating push rod 502 to rotate. It should be noted that in this embodiment of the invention, the drive pusher frame 509 pushes the integrated pusher frame 508 to move. The movement of the integrated pusher frame 508 compresses multiple pusher plates 507 to rotate synchronously, so that the pusher plate 507 drives the rotating push rod 502 to rotate through the active rotating shaft 504. The rotation of the rotating push rod 502 drives the pusher seat 503 to rotate through another active rotating shaft 504, so that the pusher seat 503 drives the scraper strip 501 to move. And when multiple rotating push rods 502 rotate, they drive the scraper strip 501 to move laterally, pushing and dispersing excess coal.

[0031] More specifically, in this embodiment of the invention, the transfer machine body 1 is provided with multiple push grooves 505, and multiple active rotating shafts 504 are rotatably installed in the multiple push grooves 505 respectively; a push torsion spring 506 is installed on the inner wall of the push groove 505, and the push torsion spring 506 is installed on the active rotating shaft 504; a push seat 503 is rotatably installed on another active rotating shaft 504, and the push seat 503 is installed on the scraping strip 501. It should be noted that, in this embodiment of the invention, when the push plate 507 is squeezed and rotated, the push plate 507 drives the rotating push rod 502 to rotate through the active rotating shaft 504, and at the same time drives the push torsion spring 506 to be stressed. The rotation of the rotating push rod 502 drives the push seat 503 to rotate through the other active rotating shaft 504, so that the push seat 503 drives the scraping strip 501 to move.

[0032] More specifically, in this embodiment of the invention, two downward pressing plates 512 are movably mounted on the scraper strip 3. A drive pusher 509 is mounted on one of the downward pressing plates 512, and the drive pusher 509 moves to push the integrated pusher 508 to move. In addition, rotating downward pressing rods 510 are rotatably mounted on both sides of the two downward pressing plates 512, and rotating seats 511 are rotatably mounted on both rotating downward pressing rods 510. The rotating seats 511 are mounted on the scraper strip 3. It should be noted that in this embodiment of the invention, when any scraper strip 3 is squeezed, the pressure shell 518 is squeezed downward, and the two downward pressing plates 512 are squeezed downward. At the same time, the downward movement of the downward pressing plates 512 drives the two rotating downward pressing rods 510 to rotate, so that the rotating downward pressing rods 510 push the downward pressing plates 512 to move laterally.

[0033] Please continue to refer to the instruction manual appendix. Figures 2-7 More specifically, in this embodiment of the invention, a synchronous rotating groove 516 is provided on the rotating seat 511, and two synchronous rotating shafts 515 are installed on the rotating pressing rod 510. One synchronous rotating shaft 515 is rotatably installed on the pressing driving plate 512, and the other synchronous rotating shaft 515 is rotatably installed in the synchronous rotating groove 516. Furthermore, a reset torsion spring 517 is installed on the inner wall of the synchronous rotating groove 516, and the reset torsion spring 517 is mounted on the synchronous rotating shaft 515. It should be noted that, in this embodiment of the invention, when the pressing drive plate 512 moves downward, it drives the two rotating pressing rods 510 to rotate, so that the rotating pressing rods 510 push the pressing drive plate 512 to move laterally through one synchronous rotating shaft 515. At the same time, the pressing drive plate 512 rotates in the synchronous rotating groove 516 through another synchronous rotating shaft 515, and the reset torsion spring 517 is subjected to force, which in turn drives the drive pusher 509 to push the integrated pusher 508 to move.

[0034] More specifically, in this embodiment of the invention, a driving groove 513 is provided on the bottom side of the pressing driving plate 512, and a pressing limiting frame 514 is slidably installed in the driving groove 513; two vertical grooves 521 are provided on the scraper strip 3, and the pressing limiting frame 514 is slidably installed in the vertical grooves 521. It should be noted that, in this embodiment of the invention, when the pressing driving plate 512 moves laterally, it slides horizontally on the pressing limiting frame 514 through the driving groove 513, and when the pressing driving plate 512 moves downward, it drives the pressing limiting frame 514 to move vertically in the vertical grooves 521.

[0035] Please refer to the instruction manual attached. Figure 2 and Figures 8-10Furthermore, in this embodiment of the invention, a transfer machine for coal production includes a locking protection device 6 that further comprises multiple positioning shafts 603. Each positioning shaft 603 is mounted on the bottom side of the scraping bar 501. Each of the multiple active locking frames 601 has a drive groove 602, and the multiple positioning shafts 603 are rotatably mounted within the multiple drive grooves 602. Additionally, a drive torsion spring 604 is mounted on each positioning shaft 603, and the drive torsion spring 604 is mounted on the inner wall of the drive groove 602. It should be noted that in this embodiment of the invention, when the scraping bar 501 moves, it causes the multiple active locking frames 601 to disengage from the blocking plate 605. Then, under the restoring force of the multiple drive torsion springs 604, the active locking frames 601 rotate to the corresponding positions of the multiple locking holes 609, facilitating the active locking frames 601 to pass through the locking holes 609 and lock the scraping bar 501.

[0036] More specifically, in this embodiment of the invention, both sides of the active locking frame 601 are provided with outward push grooves 606, and two outward push locking blocks 607 are slidably installed in the two outward push grooves 606 respectively; an outward push spring 608 is installed on the inner wall of the outward push groove 606, and the outward push spring 608 is installed on the outward push locking block 607. In addition, multiple blocking plates 605 are installed on the transfer body 1, which are used to block the active locking frame 601. It should be noted that, in this embodiment of the invention, when the active locking frame 601 passes through the locking hole 609, the rebound force of the two outward push springs 608 causes the two outward push locking blocks 607 to pop out, thereby causing the active locking frame 601 to be stuck on the blocking plate 4.

[0037] Please refer to the instruction manual attached. Figure 2 and Figures 11-12 Furthermore, the transfer machine for coal production provided in this embodiment of the invention also includes a chain cleaning device 7. The chain cleaning device 7 is installed on the transfer machine body 1 and is used to rotate and clean the conveyor chain 2. Specifically, the chain cleaning device 7 includes multiple transverse brush frames 701, which are slidably mounted on multiple scraper strips 3. The transverse brush frames 701 move to clean the conveyor chain 2. It should be noted that in this embodiment of the invention, when conveying coal, the transverse brush frames 701 are used to clean the conveyor chain 2 by lateral swinging, avoiding the problem of excessive impurities adhering to the conveyor chain 2, which would affect coal conveying.

[0038] More specifically, in this embodiment of the invention, the chain cleaning device 7 further includes a plurality of pushing protrusions 703, which are respectively installed on the inner walls of both sides of the transfer machine body 1. Each of the plurality of transverse brush holders 701 is equipped with a pressing push plate 704, which is pressed by the pushing protrusions 703 to drive the transverse brush holders 701 to move. Furthermore, two transverse sliding grooves 702 are provided on the scraper strip 3, and two transverse brush holders 701 are slidably installed in the two transverse sliding grooves 702 respectively. A return spring 705 is installed on the transverse brush holder 701, and the return spring 705 is installed on the inner wall of the transverse sliding groove 702. It should be noted that, in this embodiment of the invention, when the conveyor chain 2 moves and drives the multiple scraper strips 3 to move, it drives the two transverse brush holders 701 to move, so that the pressing push plate 704 is pressed by the pushing protrusion 703, thereby causing the pressing push plate 704 to drive the transverse brush holder 701 to move laterally. The transverse brush holder 701 slides horizontally in the transverse sliding groove 702, and the return spring 705 is subjected to force. Therefore, when the scraper strip 3 continues to move, the pressing push plate 704 disengages from the pushing protrusion 703, and then under the rebound force of the return spring 705, the transverse brush holder 701 is reset, realizing the transverse swing of the transverse brush holder 701.

[0039] In summary, the working principle of a transfer machine for coal production provided by this embodiment of the invention is as follows: When the conveyor chain 2 moves and drives multiple scraper strips 3 to move, thereby conveying coal, if a large amount of coal falls, it causes the coal to press down on the pressure shell 518. The pressure shell 518 moves within the pressure groove 519, causing multiple pressure springs 520 to be stressed. The downward movement of the pressure shell 518 compresses two downward pressing plates 512, causing the downward pressing plate 512 to move downward, which in turn causes the downward pressing limit frame 514 to move vertically within the vertical slide groove 521. At the same time, the downward movement of the downward pressing plate 512 causes two rotating downward pressing rods 510 to rotate, causing the rotating downward pressing rods 510 to push the downward pressing plate 512 to move laterally through a synchronous rotating shaft 515. The lateral movement of the downward pressing plate 512 causes it to slide horizontally on the downward pressing limit frame 514 through the slide groove 513. Simultaneously, the downward pressing plate 512 rotates within the synchronous rotating groove 516 through another synchronous rotating shaft 515, causing the reset torsion spring 517 to be stressed. Furthermore, the downward pressure causes the plate 512 to move laterally, which in turn causes the drive pusher 509 to move. This causes the drive pusher 509 to push the integrated pusher 508 to move. The integrated pusher 508 moves and compresses multiple pusher plates 507 to rotate synchronously. This causes the pusher plates 507 to drive the rotating pusher 502 to rotate via the active rotating shaft 504. At the same time, this causes the pusher torsion spring 506 to be stressed. The rotation of the rotating pusher 502 drives the pusher seat 503 to rotate via another active rotating shaft 504. This causes the pusher seat 503 to drive the scraper 501 to move. When multiple rotating pushers 502 rotate, they drive the scraper 501 to move laterally, pushing and dispersing excess coal. This prevents the scraper strip 3 and the conveyor chain 2 from being damaged due to excessive pressure caused by too much coal. It should be noted that if the weight of the coal is too great, causing the scraper bar 501 to move excessively, the scraper bar 501 will drive multiple active locking frames 601 to disengage from the baffle plate 605. Then, under the rebound force of multiple drive torsion springs 604, the active locking frames 601 will rotate. In addition, driven by the scraper bar 501, the active locking frames 601 will be inserted into the locking hole 609, causing the two outward locking blocks 607 to be squeezed and retracted into the two outward pushing grooves 606. At the same time, the two outward pushing springs 608 will be stressed. Therefore, under the continuous movement of the scraper bar 501, the active locking frame 601 will pass through the locking hole 609. At this time, under the rebound force of the two outward pushing springs 608, the two outward locking blocks 607 will pop out, and the active locking frame 601 will be locked on the baffle plate 4. This will achieve the support of the top side of the transfer machine body 1 by multiple rotating push rods 502, and prevent all the weight of the coal from directly pressing on the scraper bar 3 and the conveyor chain 2 and causing damage. Furthermore, when the conveyor chain 2 moves, it drives multiple scraper strips 3 to move, which in turn drives two transverse brush holders 701 to move. This causes the pressing push plate 704 to be pressed by the pushing protrusion 703, which in turn causes the pressing push plate 704 to drive the transverse brush holder 701 to move laterally. The transverse brush holder 701 slides horizontally within the transverse sliding groove 702, and the return spring 705 is stressed. Therefore, when the scraper strips 3 continue to move, the pressing push plate 704 disengages from the pushing protrusion 703. Then, under the rebound force of the return spring 705, the transverse brush holder 701 is reset, realizing the transverse swing of the transverse brush holder 701, thereby cleaning the conveyor chain 2 and preventing the coal conveying from being affected by too many impurities adhering to the conveyor chain 2.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A transfer conveyor for coal production, characterized in that, It includes a transfer machine body, on which two conveyor chains are installed, and multiple scraper strips are installed on the two conveyor chains. Baffles are also installed on the transfer machine body. It also includes a pressure-bearing scraping device, which is installed on the transfer machine body and is used to support and protect the multiple scraper strips. The pressure-bearing scraping device includes scraping strips, which are rotatably installed on the transfer machine body. The scraping strips rotate to scrape off the coal. Each of the multiple scraper strips has a pressure-bearing groove, and a pressure-bearing shell is movably installed in each of the multiple pressure-bearing grooves. Multiple pressure-bearing springs are installed on the inner wall of the pressure-bearing grooves, and the multiple pressure-bearing springs are all installed on the pressure-bearing shells. The pressure-bearing shells are drively connected to the scraper strips. The downward movement of the pressure-bearing shells is used to drive the scraper strips to rotate. Multiple rotating push rods are movably installed on the transfer machine body, and the multiple rotating push rods are movably installed on the scraper strips. It also includes a locking protection device, which is installed on the pressure-bearing scraping device and is used to lock the pressure-bearing scraping device on the baffle. The locking protection device includes multiple active locking frames, which are rotatably installed on the bottom side of the scraping strip. Push-locking blocks are movably installed on both sides of the active locking frames. The baffle has multiple locking holes, and the active locking frames are respectively inserted into the multiple locking holes to lock the scraping strip. The two push-locking blocks are unfolded to lock the active locking frames on the baffle.

2. A transfer conveyor for coal production according to claim 1, characterized in that, The pressure scraping device also includes an integrated pusher frame, which is movably installed inside the transfer machine body. Two active rotating shafts are mounted on the rotating push rod, and the active rotating shafts are rotatably installed inside the transfer machine body. A push plate is installed on the active rotating shaft. The integrated push frame moves to push the push plate to rotate, thereby driving the rotating push rod to rotate.

3. A transfer conveyor for coal production according to claim 2, characterized in that, The transfer machine body is provided with multiple push slots, and multiple active rotating shafts are respectively rotatably installed in the multiple push slots; A torsion spring is installed on the inner wall of the drive groove, and the torsion spring is mounted on the drive shaft; A pusher seat is rotatably mounted on another of the said active rotating shafts, and the pusher seat is mounted on the scraping strip.

4. A transfer conveyor for coal production according to claim 3, characterized in that, Two downward driving plates are movably mounted on the scraper bar. A driving pusher is mounted on one of the downward driving plates. The driving pusher moves to push the integrated pusher. Rotating downward pressure rods are rotatably mounted on both sides of the two downward pressure plates, and rotating seats are rotatably mounted on the two rotating downward pressure rods. The rotating seats are mounted on the scraper strips.

5. A transfer conveyor for coal production according to claim 4, characterized in that, The rotating seat is provided with a synchronous rotating groove, and two synchronous rotating shafts are installed on the rotating pressing rod. One synchronous rotating shaft is rotatably installed on the pressing drive plate, and the other synchronous rotating shaft is rotatably installed in the synchronous rotating groove. A reset torsion spring is installed on the inner wall of the synchronous rotating groove, and the reset torsion spring is mounted on the synchronous rotating shaft.

6. A transfer conveyor for coal production according to claim 5, characterized in that, The bottom side of the pressing drive plate is provided with a drive groove, and a pressing limit frame is slidably installed in the drive groove; The scraper bar has two vertical grooves, and the downward pressure limiting frame is slidably installed in the vertical grooves.

7. A transfer conveyor for coal production according to claim 1, characterized in that, The locking protection device also includes multiple positioning shafts, all of which are mounted on the bottom side of the scraping strip. Each of the multiple active locking frames is provided with a drive slot, and the multiple positioning shafts are rotatably mounted in the multiple drive slots respectively. A drive torsion spring is mounted on the positioning shaft, and the drive torsion spring is mounted on the inner wall of the drive rotary groove.

8. A transfer conveyor for coal production according to claim 7, characterized in that, Both sides of the active locking frame are provided with outward push grooves, and the two outward push locking blocks are slidably installed in the two outward push grooves respectively; An outward push spring is installed on the inner wall of the outward push groove, and the outward push spring is installed on the outward push lock block; The transfer machine is equipped with multiple blocking plates, which are used to block the active locking frame.

9. A transfer conveyor for coal production according to claim 1, characterized in that, It also includes a chain cleaning device, which is installed on the transfer machine and is used to clean the conveyor chain by rotation. The chain cleaning device includes multiple transverse brush frames, which are slidably mounted on multiple scraper strips. The transverse brush frames move to clean the conveyor chain.

10. A transfer conveyor for coal production according to claim 9, characterized in that, The chain cleaning device also includes multiple pushing protrusions, which are respectively installed on the inner walls of both sides of the transfer machine body. Each of the multiple transverse brush frames is equipped with a pressing push plate, which is pressed by the pushing protrusions to drive the transverse brush frame to move. The scraper bar has two transverse sliding grooves, and the two transverse brush holders are slidably installed in the two transverse sliding grooves respectively. The transverse brush holders are equipped with a return spring, which is installed on the inner wall of the transverse sliding groove.

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