A scraper conveyor

Abstract

This application relates to the field of transportation equipment technology, and in particular to a scraper conveyor, which includes a front scraper conveyor, a middle scraper conveyor and a rear scraper conveyor connected in sequence, as well as at least one guide rail, a sliding member and a driving member; wherein, the middle scraper conveyor and the rear scraper conveyor are rotatably connected; the sliding member is connected to the middle scraper conveyor and is also slidably connected to the guide rail; the driving member is rotatably connected to a first position of the sliding member and is also rotatably connected to a second position of the rear scraper conveyor, so as to change the distance between the first position and the second position by the driving member, thereby driving the driving member to move along the guide rail and driving the rear scraper conveyor to rotate around the connection point with the middle scraper conveyor, thereby not only concentrating the falling material, but also avoiding material accumulation.

Description

Technical Field

[0001] This application relates to the field of transportation equipment technology, and more particularly to a scraper conveyor. Background Technology

[0002] During the operation of a tunnel boring machine, the cutterhead breaks up rock strata and produces a large amount of rock debris. This rock debris needs to be transported away from the tunnel by a conveying mechanism. Therefore, the conveying mechanism is a relatively important component of the tunnel boring machine.

[0003] Scraper conveyors are a commonly used conveying mechanism in tunneling machines. They utilize a motor-driven sprocket and chain to move scrapers within a chute, achieving continuous material transport. A scraper conveyor mainly consists of a drive unit, scraper chain, front scraper conveyor, middle scraper conveyor, and rear scraper conveyor. The various sections of the scraper conveyor are fixedly connected by bolts. The drive unit rotates the scraper chain, causing the scrapers to push material from the front scraper conveyor to the rear scraper conveyor.

[0004] This design of the scraper conveyor makes it easy for materials to accumulate on the downstream scraper conveyor, affecting the material conveying efficiency. Utility Model Content

[0005] This application provides a scraper conveyor to solve the problem that in existing scraper conveyors, materials tend to accumulate on the downstream scraper, affecting the conveying effect.

[0006] To solve the above problems, this application adopts the following technical solution:

[0007] This application provides a scraper conveyor, including a front scraper conveyor, a middle scraper conveyor and a rear scraper conveyor connected in sequence, as well as at least one guide rail, a sliding member and a driving member;

[0008] The intermediate scraper conveyor and the rear scraper conveyor are rotatably connected; the sliding member is connected to the intermediate scraper conveyor and is also slidably connected to the guide rail; the driving member is rotatably connected to a first position of the sliding member and is also rotatably connected to a second position of the rear scraper conveyor, so as to change the distance between the first position and the second position by the driving member, thereby driving the driving member to move along the guide rail and driving the rear scraper conveyor to rotate around the connection point with the intermediate scraper conveyor.

[0009] In some possible designs, the guide rail has grooves on opposite sides, the grooves extending in the same direction as the guide rail, the sliding member includes a base and at least two rollers, the rollers are rotatably connected to the base, and the rollers at least partially extend into the grooves and are tactilely connected to the grooves.

[0010] In some possible designs, the sliding member further includes at least two bearings, with at least one bearing on each side of the guide rail, the bearings being located outside the guide rail, and a roller being mounted on one of the bearings.

[0011] In some possible designs, the guide rail is located below the intermediate scraper conveyor, and the sliding component also includes two main stiffening plates, which are fixed to opposite sides of the base. The main stiffening plates are triangular plates, and the apex of the main stiffening plates are connected to the intermediate scraper conveyor.

[0012] In some possible designs, two first connecting blocks and a first pin are also included. The first connecting block includes a cylindrical segment and a polygonal prism segment connected to each other. The size of the cylindrical segment is larger than that of the polygonal prism segment. Both the cylindrical segment and the polygonal prism segment are provided with a fourth connecting hole for the first pin to pass through. The end of the polygonal prism segment away from the cylindrical segment can also be detachably provided with a first shaft baffle to restrict the position of the first pin.

[0013] The middle section scraper is provided with a first connecting hole on each of its opposite sides. The rear section scraper is provided with a first connecting seat extending between the two first connecting holes. The first connecting seat is provided with a second connecting hole that mates with the first connecting hole. The cylindrical sections of the two first connecting blocks are inserted into the two first connecting holes respectively. The first pin passes through the fourth connecting hole of the polygonal prism section and the cylindrical section and extends into the second connecting hole.

[0014] Two sliding members are provided, and the two sliding members are symmetrically arranged on both sides of the middle section scraper. A third connecting hole is provided on the main stiffener plate to cooperate with the polygonal prism section.

[0015] In some possible designs, a first limiting block is also included, which includes a first limiting part and a second limiting part;

[0016] There are two first connecting seats. The first limiting part is located between the two first connecting seats, and the first limiting part is provided with a fifth connecting hole for the first pin to be inserted. The second limiting part bypasses the first connecting seat and abuts against the end of the first connecting block away from the main stiffening plate.

[0017] In some possible designs, the drive unit includes at least two hydraulic cylinders arranged side by side, one end of which is rotatably connected to the rear scraper conveyor, and the other end of which is rotatably connected to the sliding member.

[0018] In some possible designs, a cover plate assembly is also included, with one cover plate assembly respectively provided on the top of the front scraper, the middle scraper, and the rear scraper, so as to cover the top of the front scraper, the middle scraper, and the rear scraper through the cover plate assembly.

[0019] In some possible designs, the cover plate assembly includes multiple cover plates arranged side by side, with adjacent sides of adjacent cover plates fitting together, and both sides of the front scraper, the middle scraper, and the rear scraper are connected to the cover plates by bolts.

[0020] In some possible designs, a water spraying device is provided at the end of the rear scraper away from the middle scraper, the water spraying device being used to spray water mist or high-pressure water jets into the rear scraper.

[0021] The beneficial effects of this application are as follows: The scraper conveyor provided by this application, by rotatably connecting the intermediate scraper conveyor and the rear scraper conveyor, connects the sliding member to the intermediate scraper conveyor and slides it along the guide rail, and rotatably connects the drive member to the first position of the sliding member and to the second position of the rear scraper conveyor, allows the drive member to change the linear distance between the first and second positions during material conveying. At this time, because the rear scraper conveyor is rotatably connected to the intermediate scraper conveyor, and the guide rail restricts the sliding member to reciprocate only along the guide rail... The movement allows the rear scraper conveyor to rotate around its connection point with the middle scraper conveyor, changing the angle of inclination of the rear scraper conveyor relative to the ground. This helps the material on the rear scraper conveyor fall off, reducing material accumulation and improving the high-slope transport capacity of the scraper conveyor. At the same time, the cooperation of the sliding and driving components can improve the support force on the rear scraper conveyor, preventing it from swaying left and right, and making the material falling from the rear scraper conveyor more concentrated. This improves the transport efficiency of the scraper conveyor and facilitates the collection of the material transported by the scraper conveyor. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Obviously, the drawings described below are some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the scraper conveyor provided in an embodiment of this application;

[0024] Figure 2 for Figure 1 A schematic diagram of the sliding component in the diagram;

[0025] Figure 3 for Figure 2 A schematic diagram of the roller structure in the diagram;

[0026] Figure 4 for Figure 1 BB cross-section diagram in the middle;

[0027] Figure 5 for Figure 4 A schematic diagram of the structure of the first connecting block in the diagram;

[0028] Figure 6 for Figure 1 AA section view in the middle;

[0029] Figure 7 for Figure 1 A magnified view of a section at point I.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Front section scraper conveyor, 2-Middle section scraper conveyor, 3-Sliding component, 4-Rear section scraper conveyor, 5-Drive device, 6-Drive component, 7-Roller, 8-First pin, 9-First connecting block, 10-Guide rail, 11-Second pin, 12-Second connecting block, 13-Slide groove, 14-Water spray device, 15-Scraper chain, 16-First limiting block, 17-Cover plate assembly, 18-Ear plate, 19-First connecting seat, 20-Main stiffener plate, 21-Shaft seat, 22-First shaft baffle, 23-Second shaft baffle, 24-Second limiting block, 25-Cover plate, 26-Sliding frame.

[0032] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0034] Secondly, it should be noted that in the description of this application, the terms "inner" and "outer," etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0035] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] A scraper conveyor is a device that uses a motor to drive a sprocket, which in turn moves a chain mounted on the sprocket, causing scrapers to slide along a chute to continuously transport materials. Due to its reliable structure, stable operation, large conveying capacity, long service life, and safe operation, it is widely used in industries such as metallurgy, coal mining, mining, power, cement, ports, building materials, chemicals, and grain.

[0037] During the use of scraper conveyors, if the accumulated material is not cleaned up in time, scraper conveyor failures will occur frequently and maintenance will be inconvenient. Once the scraper conveyor stops running, it will inevitably affect the entire production chain and thus affect the overall economic benefits.

[0038] To avoid the aforementioned problems, this application provides a scraper conveyor in which a drive component provides driving force during operation and is positioned by a sliding component and guide rail, causing the rear scraper conveyor to rotate relative to the connection point with the middle scraper conveyor. This enhances the support force on the rear scraper conveyor through the sliding component, preventing the rear scraper conveyor from shaking, while also clearing the material accumulated on the rear scraper conveyor, preventing material buildup, and improving the high-slope transport capacity of the scraper conveyor.

[0039] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0040] Please see Figure 1 As shown, this embodiment provides a scraper conveyor, which is similar in structure to existing scraper conveyors in that it includes a front scraper conveyor 1, a middle scraper conveyor 2 and a rear scraper conveyor 4, as well as components such as a scraper chain 15, a drive device 5, and scrapers.

[0041] Each of the front scraper conveyor 1, the middle scraper conveyor 2, and the rear scraper conveyor 4 is equipped with a conveying trough extending along its length. These conveying troughs are interconnected to form a material conveying channel. The scraper chain 15 is connected to the sprocket of the drive device 5. The scraper chain 15 is arranged above the bottom plate of the front scraper conveyor 1, the middle scraper conveyor 2, and the rear scraper conveyor 4, forming a material conveying trough between the scraper chain 15 and the bottom plate. The scrapers are mounted on the scraper chain 15. When the scraper chain 15 is driven by the drive device 5, the scrapers can move within the material conveying trough along with the scraper chain 15, realizing continuous material conveying. Its specific structure and principle are well known to those skilled in the art, and will not be described in detail here.

[0042] It is understood that the scraper conveyor provided in this embodiment can be applied to tunneling machines for conveying rock cuttings, or it can be applied to other situations requiring the transportation of materials, such as coal transportation. This embodiment does not limit its application. For ease of understanding, this embodiment will use its application on a rotary cutter rock tunneling machine as an example for explanation.

[0043] In this embodiment, the front scraper 1 and the middle scraper 2 can be fixedly connected or rotatably connected. This embodiment does not impose any restrictions on this connection. The rear scraper 4 and the middle scraper 2 need to be rotatably connected. That is, the end of the middle scraper 2 away from the front scraper 1 is rotatably connected to the end of the rear scraper 4, so that the rear scraper 4 can rotate relative to its connection with the middle scraper 2, thereby changing the tilt angle of the rear scraper 4 relative to the ground.

[0044] The scraper conveyor provided in this embodiment also includes a guide rail 10, a sliding member 3, and a driving member 6. The sliding member 3 is connected to the intermediate scraper conveyor 2 and is also slidably connected to the guide rail 10, that is, the sliding member 3 can reciprocate along the guide rail 10, thereby driving the intermediate scraper conveyor 2 to move synchronously. The driving member 6 is rotatably connected to the first position of the sliding member 3 and is also rotatably connected to the second position of the rear scraper conveyor 4, so that when the driving member 6 is in motion, the distance between the first position and the second position can be changed by the driving member 6, thereby providing driving force to make the driving member 6 move along the guide rail 10 and drive the rear scraper conveyor 4 to rotate around the connection point with the intermediate scraper conveyor 2. Of course, at this time, the intermediate scraper conveyor 2 and the rear scraper conveyor 4 also move along the guide rail 10 with the sliding member 3.

[0045] Specifically, the scraper conveyor is located above the chassis of the tunneling machine, and the guide rail 10 can be fixed to the tunneling machine. The extension direction of the guide rail 10 is consistent with the extension direction of the scraper conveyor. In addition, a sliding frame 26 can be installed on the chassis of the tunneling machine to support the scraper conveyor. That is, the sliding frame 26 can move back and forth relative to the chassis of the tunneling machine. Specifically, its movement trajectory can be restricted by structures such as sliding rails, so that the scraper conveyor can only move back and forth along the extension direction of the guide rail 10 and will not swing in other directions.

[0046] It is understood that one, two or more guide rails 10 can be set. When multiple guide rails 10 are set, they can be set at any position of the middle scraper conveyor 2, as long as the guide rails 10 are parallel to each other. This embodiment does not limit this.

[0047] For example, a guide rail 10 is provided, which is located directly below the intermediate scraper 2. A sliding member 3 is also provided, which can be connected to the intermediate scraper 2 from the bottom or sides.

[0048] For example, there are two guide rails 10, which can be respectively set on both sides of the extension direction of the middle section scraper 2. Each guide rail 10 is provided with a corresponding sliding member 3 to support the middle section scraper 2 and the rear section scraper 4 from both sides, thereby improving the support effect.

[0049] When the front scraper conveyor 1 and the rear scraper conveyor 4 are not rotating, they will only move back and forth along the extension direction of the guide rail 10. At this time, the sliding frame 26 can be connected to the front scraper conveyor 1 and the middle scraper conveyor 2 at the same time, which improves the overall support effect of the scraper conveyor.

[0050] During the material conveying process of the scraper conveyor, if the amount of material on the scraper conveyor reaches a certain level, the drive component 6 can be activated to shorten the straight-line distance between the first position and the second position. At this time, the rear scraper 4 rotates, and the angle between it and the horizontal plane increases, that is, the rear scraper 4 tilts more towards the ground. Combined with the shaking caused by the rotation and displacement of the rear scraper 4, the material on the rear scraper 4 can slide off quickly. At this time, the front scraper 1, the middle scraper 2 and the rear scraper 4 will all move along the guide rail 10 away from the middle scraper 2 under the drive of the sliding component 3. After the material falls, the drive component 6 increases its movement, increasing the straight-line distance between the first position and the second position. At this time, the rear scraper 4 rotates in the opposite direction, and the front scraper 1, the middle scraper 2 and the rear scraper 4 will all move in the opposite direction under the drive of the sliding component 3. The initial tilt angle and the adjusted tilt angle of the rear scraper 4 can be set according to the actual use environment. This embodiment does not limit them.

[0051] This transportation method, on the one hand, enhances the support for the rear scraper conveyor 4 through the guide rail 10 and sliding component 3, preventing the rear scraper conveyor 4 from swaying left and right. That is, the rear scraper conveyor 4 can only move back and forth along the guide rail 10 and rotate relative to the middle scraper conveyor 2, achieving concentrated material discharge. On the other hand, as the sliding component 3 moves along the guide rail 10, it allows the rear scraper conveyor 4 to move and rotate accordingly, enabling timely clearing of accumulated materials, reducing material buildup, and maintaining a clean and hygienic operating environment. These two aspects combined not only improve the material conveying effect of the scraper conveyor but also help reduce energy consumption, increase the working efficiency of the scraper conveyor, and extend its service life.

[0052] For some possible implementations, please refer to Figure 2 and Figure 3 As shown, the guide rail 10 has grooves 13 on both sides opposite to each other. The grooves 13 extend in the same direction as the guide rail 10. The sliding member 3 includes a base and at least two rollers 7. That is, each groove 13 is provided with at least one roller 7. The rollers 7 can be rotatably connected to the base through components such as bearings and shafts. At the same time, the rollers 7 extend at least partially into the groove 13 and are tactilely connected to the groove 13.

[0053] It is understood that multiple rollers 7 can be provided in each groove 13. That is, there are two wheel sets under the base corresponding to the guide rail 10. Each wheel set can contain one or more rollers 7. The specific number of rollers 7 can be selected according to actual usage requirements. This embodiment does not limit it.

[0054] After the roller 7 engages between the two side walls of the slide groove 13, the relative position of the guide rail 10 and the sliding member 3 can be restricted by the roller 7, preventing the sliding member 3 and the guide rail 10 from separating during use, thereby improving the stability of the connection.

[0055] Furthermore, the sliding component 3 also includes at least two bearing seats 21. The bearing seats 21 can be connected to the base plate by welding or other means, or they can be integrally formed with the base plate. At least one bearing seat 21 is provided on each side of the guide rail 10. The bearing seats 21 are located on the outside of the guide rail 10, and the bearing seats 21 have through holes for mounting the rollers 7. A mounting plate that is rotatably connected to the rollers 7 can be provided on the end of the rollers 7 away from the slide groove 13. The size of the mounting plate is larger than the size of the through hole. When mounting the rollers 7, the mounting plate can be fixed to the side of the bearing seat 21 away from the slide groove 13 by bolts. Of course, one roller 7 is mounted on one bearing seat 21, that is, the number of bearing seats 21 is matched with the number of rollers 7. The bearing seats 21 can have a small gap with the edge of the guide rail 10 to prevent friction between the bearing seats 21 and the edge of the guide rail 10 when the rollers 7 move along the guide rail 10. In addition, the openings of the two slide grooves 13 face the side away from each other, that is, the openings of the slide grooves 13 face the outside of the guide rail 10.

[0056] When assembling the guide rail 10 and the sliding component 3, first install the roller 7 on the bearing seat 21. The slide groove 13 is open at least one end. Then, slide the roller 7 into the slide groove 13 from the open end of the slide groove 13 to complete the assembly of the guide rail 10 and the sliding component 3. During use, the bearing seat 21 is located on both sides of the guide rail 10 and its size is larger than the width of the slide groove 13, which can effectively limit the position of the roller 7 and prevent the roller 7 from separating from the slide groove 13.

[0057] The main stiffening plate 20 needs to withstand significant pressure. To improve its load-bearing capacity, it can be designed as a triangular plate. It is understood that the triangular plate mentioned in this embodiment does not necessarily mean it must be a triangle; the main stiffening plate 20 only needs to have a triangular-like structure.

[0058] For example, such as Figure 2 As shown, one apex of the main stiffening plate 20 is rounded, while the end connecting it to the base is straight. The apex is connected to both ends of this end, and all connections are rounded. This allows it to form a triangular support structure under stress, effectively improving the structural strength and stability of the main stiffening plate 20. Furthermore, the rounded corners not only provide a natural curve and aesthetically pleasing appearance but also eliminate sharp edges, preventing injury to workers and improving safety. In addition, this design, compared to directly making the main stiffening plate 20 a rectangle, reduces material usage, lowers its cost and weight, and also helps save space.

[0059] For example, one guide rail 10 and one sliding member 3 are provided. In this case, the guide rail 10 is located below the middle section scraper 2, and the sliding member 3 includes two main stiffening plates 20. Of course, the two main stiffening plates 20 are symmetrically arranged on opposite sides of the base, and the two main stiffening plates 20 extend to both sides of the middle section scraper 2, thereby improving the support effect without increasing the number of guide rails 10 and sliding members 3.

[0060] In addition, reinforcing ribs can be set on the main stiffening plate 20. The reinforcing ribs are also connected to the base. One or more reinforcing ribs can be set. There are two side edges connected to the base corresponding to the top corner connected to the middle scraper 2. The reinforcing ribs can be connected to any one of these side edges, thereby further improving the strength of the main stiffening plate 20 through the reinforcing ribs.

[0061] For some possible implementations, please refer to Figure 4 and Figure 5 As shown, the scraper conveyor in this embodiment also includes two first connecting blocks 9 and a first pin 8. The first connecting block 9 includes a cylindrical section and a polygonal prism section connected to each other. The size of the cylindrical section is larger than that of the polygonal prism section. Both the cylindrical section and the polygonal prism section are provided with a fourth connecting hole for the first pin 8 to pass through. The fourth connecting hole is a through hole to facilitate the entry and exit of the first pin 8. The first pin 8 and the first connecting hole are both mutually compatible circles. A first shaft baffle 22 can also be detachably provided at the end of the polygonal prism section away from the cylindrical section to restrict the position of the first pin 8 and prevent the first pin 8 from leaving the fourth connecting hole from that end. That is, the first shaft baffle 22 extends at least partially to the outside of the fourth connecting hole, and the first shaft baffle 22 can be connected to the polygonal prism section by bolts.

[0062] The middle scraper conveyor 2 has a first connecting hole on each of its opposite sides. Currently, the front scraper conveyor 1, the middle scraper conveyor 2, and the rear scraper conveyor 4 all have side plates on both sides of the transport direction. The first connecting holes can be set on the two side plates of the middle scraper conveyor 2. The rear scraper conveyor 4 is provided with a first connecting seat 19 extending between the two first connecting holes. The first connecting seat 19 is provided with a second connecting hole that mates with the first connecting hole. The cylindrical sections of the two first connecting blocks 9 are inserted into the two first connecting holes respectively. The inner diameter of the first connecting hole matches the outer diameter of the cylindrical section. The first pin 8 passes through the fourth connecting hole of the polygonal prism section and the cylindrical section and extends into the second connecting hole. The inner diameter of the second connecting hole and the fourth connecting hole matches the outer diameter of the first pin 8. The first connecting seat 19 is rotatably connected to the first pin 8 and can rotate relative to the first pin 8.

[0063] There are two sliding parts 3, and the two sliding parts 3 are symmetrically arranged on both sides of the middle section scraper 2. Correspondingly, there are also two guide rails 10, which are located on both sides of the middle section scraper 2. The main stiffening plate 20 is provided with a third connecting hole that matches the polygonal prism section. That is, the inner diameter of the third connecting hole is adapted to the outer diameter of the polygonal prism section. After the polygonal prism is inserted into the third connecting hole, the polygonal prism section cannot rotate relative to the main stiffening plate 20.

[0064] Specifically, such as Figure 4 As shown, the first connecting seat 19 is located between the two side plates of the middle section scraper 2. The first connecting hole and the second connecting hole extend in the same direction, that is, they both extend along the width direction of the middle section scraper 2. After the cylindrical section is inserted into the first connecting hole, the fourth connecting hole and the second connecting hole extend in the same direction and are interconnected with the second connecting hole. The first pin 8 can pass through the fourth connecting hole and enter the second connecting hole.

[0065] During assembly, the first connecting block 9 is inserted from the inside of the first connecting hole, that is, the polygonal prism segment enters the third connecting hole through the first connecting hole. At this time, the cylindrical segment is engaged in the first connecting hole. Since the size of the cylindrical segment is larger than that of the polygonal prism segment, the end of the cylindrical segment will engage with the main stiffening plate 20 facing the middle scraper machine side, while the other end of the cylindrical segment abuts against the first connecting seat 19. Thus, the position of the first connecting block 9 can be restricted by the first connecting seat 19 and the main stiffening plate 20, so that the first connecting block 9 cannot be separated from the middle scraper machine 2.

[0066] It is understandable that the first pin 8 can be set to two or one. When set to one, the first connecting seat 19 can be one, and the first connecting seat 19 is relatively large and is embedded between the two first connecting holes. Alternatively, there can be two first connecting seats 19, which are respectively set to correspond to the two side plates of the middle section scraper 2. In this case, the first pin 8 directly passes through the middle section scraper 2, connecting the first connecting seat 19 and the middle section scraper 2, and allowing the rear section scraper 4 to rotate relative to the middle section scraper 2. When the second pin 11 is set to two, the first connecting seat 19 can be set to two or one. It is only necessary to set a step at the corresponding position of the end of the second pin 11 to abut against the end of the second pin 11 to position the second pin 11.

[0067] This method facilitates installation and ensures a tight connection between the rear scraper conveyor 4 and the middle scraper conveyor 2, preventing them from separating.

[0068] Meanwhile, a U-shaped baffle with a certain width can be added between the middle scraper 2 and the rear scraper 4. It covers the connection between the middle scraper 2 and the rear scraper 4, connects to the middle scraper 2, and is supported by the middle scraper 2. This can make the side plates of the middle scraper 2 and the rear scraper 4 tightly connected, reducing the risk of material leakage at the connection.

[0069] When the first connecting seat 19 directly abuts against the first connecting block 9 to position the first connecting block 9, friction will occur between the first connecting block 9 and the rotating scraper 4, affecting the rotation of the scraper 4. To address this, this embodiment adds a first limiting block 16 between the two first connecting seats 19. The first limiting block 16 includes a first limiting part and a second limiting part. In this embodiment, two first connecting seats 19 and two first pins 8 are provided. The first limiting part extends between the two first connecting seats 19 and has a fifth connecting hole. The fifth connecting hole corresponds to the second connecting hole, and steps are provided at both ends of the fifth connecting hole to limit the position of the first pin 8. That is, part of the first pin 8 is inserted into the fifth connecting hole, and one end abuts against the step, while the other end of the first pin 8 passes through the second connecting hole and the fourth connecting hole and abuts against the main stiffening plate 20. The second limiting part bypasses the first connecting seat 19 and abuts against the end of the first connecting block 9 away from the main stiffening plate 20, thereby limiting the position of the first connecting block 9.

[0070] It is understandable that only one first pin 8 can be provided, and no further step needs to be provided in the fifth connecting hole. This embodiment does not impose any restrictions on this.

[0071] In addition, the scraper chain 15 is arranged in a ring shape, and it can pass over the first connecting seat 19 and the limiting baffle above and below respectively.

[0072] The front scraper conveyor 1 and the middle scraper conveyor 2 can also be connected in a similar way, such as... Figure 6As shown, two second connecting seats and a second limiting block 24 are provided at the end of the middle section scraper conveyor 2. The second connecting seats and the limiting block are located between the upper and lower scraper chains 15 and maintain a certain gap with the upper and lower scraper chains 15. A sixth connecting hole is provided on each of the two side plates of the front section scraper conveyor 1. A corresponding seventh connecting hole is provided on the second connecting seat. A ninth connecting hole is provided on the second limiting block 24, and the second limiting block 24 is located between the two second connecting seats. Two second connecting blocks 12 and two second pins 11 are added. The second connecting blocks 12 are inserted into the seventh connecting hole. An eighth connecting hole is provided on the second connecting block 12. The second pins 11 pass through the eighth connecting hole and extend into the seventh and ninth connecting holes. Of course, steps are still provided at both ends of the ninth connecting hole to limit the position of the second pins 11. A second shaft baffle 23 is also provided. The second shaft baffle 23 extends at least partially to the outside of the eighth connecting hole. The second shaft baffle 23 and the second connecting block 12 are detachably connected by bolts or the like.

[0073] like Figure 1 As shown, the sliding frame 26 is installed on the front scraper conveyor 1, and a baffle is also provided on the sliding frame 26. A bushing is provided on the baffle, which is located outside the seventh connecting hole. The second connecting block 12 passes through the bushing and extends to the outside of the bushing. The second shaft baffle 23 can be connected to the second connecting block 12 and the baffle of the sliding frame 26 by bolts, so that the second connecting block 12 cannot move or rotate under the restriction of the sliding frame 26.

[0074] The installation of the front scraper conveyor 1, the middle scraper conveyor 2, and the rear scraper conveyor 4 in this manner not only helps to increase the overall strength, but also makes installation and maintenance convenient and quick, saving time and effort, and effectively improving the working efficiency of the scraper conveyor.

[0075] For some possible implementations, please refer to Figure 1 and Figure 2 As shown, the drive unit 6 includes at least two hydraulic cylinders arranged side by side. One end of each hydraulic cylinder is rotatably connected to the rear scraper conveyor 4, and the other end is rotatably connected to the sliding member 3. When the piston rod of the hydraulic cylinder extends, the distance between the first position and the second position increases; when the piston rod retracts, the distance between the first position and the second position decreases.

[0076] Multiple ear plates 18 can be provided at the end of the base plate. The multiple ear plates 18 are parallel to each other, and an installation area is formed between every two ear plates 18. The piston rod end or piston cylinder end of the hydraulic cylinder can be connected to the two ear plates 18 by bolts. At this time, the connection between the ear plate 18 and the hydraulic cylinder is the first position.

[0077] For example, the hydraulic cylinder is provided with two guide rails 10, a base plate, and ear plates 18, all located below the middle scraper 2. The hydraulic cylinder is connected to the bottom sides of the rear scraper 4, and the extension directions of the two hydraulic cylinders are parallel to each other. The connection point between the hydraulic cylinder and the rear scraper 4 is the second position, thereby improving the support effect on the rear scraper 4.

[0078] It is understandable that when multiple hydraulic cylinders are provided, they can be connected to the bottom or side plate of the rear scraper conveyor 4, as long as the extension direction of all hydraulic cylinders is the same. This embodiment does not limit this.

[0079] In addition, the driving component 6 can also be a telescopic electric cylinder, a telescopic air cylinder or other mechanical structure, as long as it can extend and retract to adjust the distance between the first position and the second position. This embodiment does not limit it.

[0080] For some possible implementations, please refer to Figure 7 As shown, the scraper conveyor in this embodiment also includes a cover plate assembly 17. A cover plate assembly 17 is respectively provided on the top of the front scraper 1, the middle scraper 2 and the rear scraper 4, so as to cover the top of the front scraper 1, the middle scraper 2 and the rear scraper 4. That is, the cover plate assembly 17 can cover the material transport trough to prevent debris from falling into the material transport trough during transportation, and can also prevent workers from accidentally falling, thus improving safety. At the same time, it can also reduce the dust generated when the scraper chain 15 moves the material, making the working environment cleaner and more hygienic.

[0081] Understandably, taking the front scraper conveyor 1 as an example, after the cover plate assembly 17 is installed on the front scraper conveyor 1, it forms a whole with the front scraper conveyor 1 and moves synchronously with the front scraper conveyor 1. That is, during operation, there will be no relative displacement with the front scraper conveyor 1. The cover plate 25 on the rear scraper conveyor 4 will also rotate synchronously with the rear scraper conveyor 4.

[0082] Specifically, the cover plate assembly 17 includes a plurality of cover plates 25 arranged side by side, with adjacent sides of adjacent cover plates 25 fitting together. The two sides of the front scraper 1, the middle scraper 2, and the rear scraper 4 are all connected to the cover plates 25 in the corresponding cover plate assembly 17 by bolts.

[0083] This allows the cover assembly 17 to be disassembled into multiple smaller cover plates 25, facilitating production and transportation. At the same time, the individual cover plates 25 are lightweight and small in size, which also reduces the difficulty of assembly.

[0084] It is understandable that the number of cover plates 25 used in the cover plate assembly 17 corresponding to the front scraper 1, the middle scraper 2 and the rear scraper 4 may be different. For example, if the rear scraper 4 needs to be connected with other equipment, there may be other parts that block the top of the rear scraper 4 at the connection point. In this case, there is no need to set a cover plate 25 at that position.

[0085] In some possible implementations, a water spraying device 14 is provided at the end of the rear scraper conveyor 4 away from the middle scraper conveyor 2. The water spraying device 14 is used to spray water mist or high-pressure water jets into the rear scraper conveyor 4. That is, the water mist or water jets are sprayed into the material transport trough to cool, reduce dust and clean the scraper chain 15 that has reached the corresponding position.

[0086] Understandably, in order to improve the cleaning effect, a water spraying device 14 can be installed on each side of the rear scraper conveyor 4 to spray water mist or high-pressure water jets from both sides to rinse the scraper chain 15.

[0087] In addition, the water spraying device 14 can adopt a conventional water spraying structure, such as the combination of a nozzle and a booster pump. It can be fixed to the rear scraper conveyor 4 by bolts or other auxiliary accessories. As long as it can spray high-pressure water mist or water column onto the scraper chain 15, it is well known to those skilled in the art, and will not be described in detail here.

[0088] Other embodiments of this application will readily come to mind when considering the specification and practicing the technical solutions disclosed herein.

[0089] This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary technical means in the art that are not disclosed in this application.

[0090] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An apron conveyor, characterized in that It includes a front scraper conveyor (1), a middle scraper conveyor (2) and a rear scraper conveyor (4) connected in sequence, as well as at least one guide rail (10), a sliding member (3) and a driving member (6); The middle scraper (2) and the rear scraper (4) are rotatably connected; the sliding member (3) is connected to the middle scraper (2) and is also slidably connected to the guide rail (10); the driving member (6) is rotatably connected to the first position of the sliding member (3) and is also rotatably connected to the second position of the rear scraper (4) so ​​as to change the distance between the first position and the second position by the driving member (6), thereby driving the driving member (6) to move along the guide rail (10) and driving the rear scraper (4) to rotate around the connection point with the middle scraper (2).

2. The scraper conveyor according to claim 1, characterized in that, The guide rail (10) has grooves (13) on opposite sides. The grooves (13) extend in the same direction as the guide rail (10). The sliding member (3) includes a base and at least two rollers (7). The rollers (7) are rotatably connected to the base, and the rollers (7) extend at least partially into the grooves (13) and are tumbledly connected to the grooves (13).

3. The scraper conveyor according to claim 2, characterized in that, The sliding member (3) also includes at least two bearing seats (21), and at least one bearing seat (21) is provided on each side of the guide rail (10). The bearing seat (21) is located outside the guide rail (10), and a roller (7) is installed on one of the bearing seats (21).

4. The scraper conveyor according to claim 3, characterized in that, The guide rail (10) is located below the middle section scraper (2). The sliding component (3) also includes two main stiffening plates (20). The main stiffening plates (20) are fixed on opposite sides of the base. The main stiffening plates (20) are triangular plates, and the top corners of the main stiffening plates (20) are connected to the middle section scraper (2).

5. The scraper conveyor according to claim 4, characterized in that, It also includes two first connecting blocks (9) and a first pin (8). The first connecting block (9) includes a cylindrical segment and a polygonal prism segment connected to each other. The size of the cylindrical segment is larger than that of the polygonal prism segment. Both the cylindrical segment and the polygonal prism segment are provided with a fourth connecting hole for the first pin (8) to pass through. The end of the polygonal prism segment away from the cylindrical segment is also provided with a first shaft baffle (22) to restrict the position of the first pin (8) through the first shaft baffle (22). The middle section scraper (2) has a first connecting hole on each of its opposite sides. The rear section scraper (4) is provided with a first connecting seat (19) extending between the two first connecting holes. The first connecting seat (19) is provided with a second connecting hole that mates with the first connecting hole. The cylindrical sections of the two first connecting blocks (9) are inserted into the two first connecting holes respectively. The first pin (8) passes through the fourth connecting hole and extends into the second connecting hole. Two sliding parts (3) are provided, and the two sliding parts (3) are symmetrically arranged on both sides of the middle section scraper (2). A third connecting hole is provided on the main stiffening plate (20) to cooperate with the polygonal prism section.

6. The scraper conveyor according to claim 5, characterized in that, It also includes a first limiting block (16), which includes a first limiting part and a second limiting part; There are two first connecting seats (19). The first limiting part is located between the two first connecting seats (19). The first limiting part is provided with a fifth connecting hole for the first pin (8) to be inserted. The second limiting part bypasses the first connecting seat (19) and abuts against the end of the first connecting block (9) away from the main stiffening plate (20).

7. The scraper conveyor according to any one of claims 1 to 6, characterized in that, The drive component (6) includes at least two hydraulic cylinders arranged side by side. One end of each hydraulic cylinder is rotatably connected to the rear scraper conveyor (4), and the other end is rotatably connected to the sliding component (3).

8. The scraper conveyor according to any one of claims 1 to 6, characterized in that, It also includes a cover plate assembly (17), and the top of the front scraper (1), the middle scraper (2) and the rear scraper (4) are respectively provided with a cover plate assembly (17) to cover the top of the front scraper (1), the middle scraper (2) and the rear scraper (4).

9. The scraper conveyor according to claim 8, characterized in that, The cover plate assembly (17) includes a plurality of cover plates (25) arranged side by side, and the adjacent sides of the adjacent cover plates (25) are in contact with each other. The front scraper (1), the middle scraper (2), and the rear scraper (4) are all connected to the cover plates (25) by bolts on both sides.

10. The scraper conveyor according to any one of claims 1 to 6, characterized in that, A water spraying device is provided at the end of the rear scraper away from the middle scraper, and the water spraying device is used to spray water mist or high-pressure water jet into the rear scraper.

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