Scraper conveyor capable of automatically relieving pressure of load

Abstract

The invention relates to the field of conveyors, in particular to an automatic load pressure relief scraper conveyor which comprises a rack, a groove plate, a transmission chain, a motor, a chain wheel and a plurality of scrapers, and each scraper is composed of two scraping and conveying modules symmetrically arranged with the center plane between two side plates of the rack as the symmetry plane. The scraping and conveying module comprises an end part fixing plate, a plurality of strain movable plates and an elastic plate; the transmission chain comprises an inner chain and an outer chain, the end fixing plates are located between the strain movable plates and the side plates, the tops of the end fixing plates are connected with the outer chain, the bottoms of the end fixing plates are connected with the inner chain, and the elastic plates are distributed on the adjacent strain movable plates and the junctions of the strain movable plates and the end fixing plates. In the conveying direction, the elastic plate is located on the back faces of the strain movable plate and the end fixing plate. The adjacent strain movable plates are rotationally connected with each other with the axis perpendicular to the groove plate as the rotating center line, and the strain movable plates and the end fixing plates are rotationally connected with each other with the axis perpendicular to the groove plate as the rotating center line.

Description

Technical Field

[0001] The present application relates to the field of conveyors, and in particular to a scraper conveyor with automatic load unloading. Background Art

[0002] Scraper conveyors, as a transportation device widely used in the field of industrial material handling, usually have a core structure that includes a motor drive system, a precision transmission chain assembly, a high-strength scraper component, and a stable frame structure. The equipment provides the necessary upward lifting force or propulsion force for the material through the continuous circulation of the scraper on the bottom plate of the conveying trough built into the frame. It is particularly good at handling material conveying tasks at an oblique upward angle, and shows excellent adaptability when facing heavy and slippery materials.

[0003] In the current scraper conveyor technology system, its basic design follows a relatively intuitive and simple principle: the motor drives a series of scrapers through a transmission chain to perform a one-way circular motion along a predetermined path on the bottom plate of the conveyor trough. During this process, the scrapers are in direct contact with the material and use the extrusion force to gradually push the material to the target direction. However, this traditional design has several limitations when facing specific working conditions, especially when handling hard materials (such as ore, gravel, etc.).

[0004] Specifically, when hard materials are over-extruded or blocked during transportation, the load on the scraper increases dramatically, which not only tests the strength limit of the scraper material, but may also cause the scraper structure to break or deform severely due to being overloaded, thus affecting the stability and reliability of the entire conveying system. In addition, the material is squeezed and crushed and splashed, or the scraper breaks and flies out, which brings safety hazards to the working environment. To solve this problem, some existing technologies use chain tension monitoring as a preventive measure, by installing sensors on the transmission chain or torque sensors on the main shaft of the sprocket to monitor the tension changes on the chain in real time. Once the tension is detected to exceed the preset safety threshold (usually meaning that the material is blocked or over-extruded), the system's built-in PLC controller will respond quickly, adjust the motor output power through the control algorithm or directly stop the motor operation to avoid damage to the scraper due to overload.

[0005] Although this load-monitoring-based motor control strategy protects the scraper from damage to a certain extent, its side effects are equally significant: once the motor stops, the entire conveying operation is interrupted, which not only leads to a significant decrease in production efficiency, but may also trigger a chain reaction in other links of the production line, such as material accumulation, disruption of production rhythm, etc., ultimately affecting the overall production efficiency and cost control.

[0006] Therefore, how to ensure that the scraper conveyor can effectively prevent scraper damage when facing hard materials and complex working conditions, while minimizing production interruptions and maintaining efficient and stable transportation operations has become a technical problem that needs to be solved urgently. Summary of the invention

[0007] In view of this, a scraper conveyor with automatic load unloading is proposed to avoid damage to the scraper when the conveyed material is blocked or over-extended, thereby improving safety, reliability and work efficiency.

[0008] The present application provides a load-automatic pressure-relieving scraper conveyor, comprising a frame, a slot plate, a transmission chain, a motor, a sprocket, and a plurality of scrapers, wherein the end of the scraper is connected to the transmission chain, the sprocket is rotatably connected to the frame, the slot plate is fixedly connected to the frame, the transmission chain is wound around the sprocket, the motor is connected to one of the sprockets via a belt or chain transmission, the motor drives the sprocket to rotate via a belt or chain, thereby driving each of the scrapers to move on the slot plate in the conveying direction, the sprocket comprises a driving sprocket and a driven sprocket, and the transmission chain is wound around The driving sprocket and the driven sprocket are connected to the motor in a transmission manner; the frame includes two side plates, the slot plate is located between the two side plates and is fixedly connected to the side plates; the transmission chain includes an inner chain and an outer chain, the inner chain is arranged in parallel with the outer chain; the driving sprocket, the driven sprocket, the inner chain and the outer chain are symmetrically arranged with the central plane between the two side plates as the symmetry plane; the inner chain is located on the side of the outer chain close to the slot plate, and the inner chain is located on the inner side of the lateral projection of the area surrounded by the outer chain; The scraper is arranged perpendicularly to the trough plate, and the scraper is arranged perpendicularly to the conveying direction; at the end of the scraper, the side of the scraper away from the trough plate is connected to the outer chain, and the side of the scraper close to the trough plate is connected to the inner chain; each of the scrapers is composed of two scraping modules symmetrically arranged with the central plane between the two side plates as the symmetry plane, and the two scraping modules are contacted at the central plane between the two side plates, and the scraping modules include an end fixed plate, a plurality of strain movable plates and an elastic plate; The end fixing plate is located between the strain movable plate and the side plate, the top of the end fixing plate is connected to the outer chain, the bottom of the end fixing plate is connected to the inner chain, the strain movable plates are arranged side by side in a direction perpendicular to the side plates, and the elastic plates are distributed at the junctions of adjacent strain movable plates and the strain movable plates and the end fixing plates; one side of one of the elastic plates is fixedly connected to the end fixing plate, and the other side is connected to the strain movable plate, and the two sides of the remaining elastic plates are respectively connected to two adjacent strain movable plates; in the conveying direction, the elastic plate is located on the back sides of the strain movable plate and the end fixing plate; the adjacent strain movable plates are rotatably connected with the axis of the slot plate as the rotation center line, and the strain movable plate and the end fixing plate are rotatably connected with the axis of the slot plate as the rotation center line.

[0009] In some embodiments of the above-mentioned scraper conveyor with automatic load unloading, a slide groove is provided on the back side of the strain movable plate, and the slide groove passes through one side of the strain movable plate in the direction away from the end fixed plate; one side of one of the elastic plates is fixedly connected to the end fixed plate, and the other side is slidably connected to the slide groove on the adjacent strain movable plate, and the remaining elastic plates are fixedly connected to the strain movable plate on one side close to the end fixed plate, and are slidably connected to the slide groove on the adjacent strain movable plate on one side away from the end fixed plate; a spring is provided inside the slide groove, and the extension and contraction direction of the spring is parallel to the slide groove, one end of the spring is connected to the elastic plate, and the other end of the spring is connected to the strain movable plate.

[0010] In some embodiments of the above-mentioned scraper conveyor with automatic load unloading, fixing bars are fixedly connected to both sides of the elastic plate, and the two fixing bars are respectively fixedly connected to the back sides of two adjacent strain movable plates, and a slider is fixedly connected to one side of one of the fixing bars close to the back side of the strain movable plate, and the slider is located in the slide groove and is slidably connected to the slide groove, and a limiting block is fixedly connected inside the port of the slide groove, and an adjusting guide rod is provided inside the slide groove, one end of the adjusting guide rod is rotatably connected to the limiting block, and the other end of the adjusting guide rod passes through the slider and is slidably connected to the slider, and the adjusting guide rod passes through one end of the slider and is rotatably connected to the strain movable plate, and the central axis of the adjusting guide rod is parallel to the central axis of the slide groove, and the spring is sleeved on the adjusting guide rod, and an adjusting nut is threadedly connected to the adjusting guide rod, and the spring is located between the adjusting nut and the slider, and the two ends of the spring are respectively pressed and matched with the slider and the adjusting nut on a side close to each other.

[0011] In some embodiments of the above-mentioned scraper conveyor with automatic load unloading, the cross-sectional shape of the fixed bar is a U-shaped shape, the edge of the elastic plate is clamped in the U-shaped cavity of the fixed bar, the elastic plate and the back side of the strain movable plate are spaced apart, the rotation center of the strain movable plate is located in the middle position between the two fixed bars, the shape of the elastic plate is arc-shaped, and the distance between the middle of the elastic plate and the strain movable plate is smaller than the distance between the two sides of the elastic plate and the strain movable plate.

[0012] In some embodiments of the above-mentioned scraper conveyor with automatic load unloading, the side of the end fixing plate close to the side plate is fixedly connected with an outer support and an inner support, the outer support is located on the side of the end fixing plate away from the trough plate, the inner support is located on the side of the end fixing plate close to the trough plate, the inner support is located on the outside of the inner chain and fixedly connected to the inner chain, and the outer support is located on the outside of the outer chain and fixedly connected to the outer chain.

[0013] In some embodiments of the above-mentioned scraper conveyor with automatic load unloading, between two adjacent strain movable plates, the upper and lower ends of one of the strain movable plates are fixedly connected with end rotating supports, and the middle position of the other strain movable plate is fixedly connected with an intermediate rotating support, the intermediate rotating support is located between the end rotating supports, the upper and lower ends of the intermediate rotating support are fixedly connected with a rotating shaft, and a socket corresponding to the rotating shaft is provided on a side of the end rotating support close to the intermediate rotating support, and the rotating shaft is plugged into the socket, and the two adjacent strain movable plates are connected through the end rotating supports and the intermediate rotating supports. , the rotating shaft is rotatably connected; the upper and lower ends of the end fixing plate close to the strain movable plate are fixedly connected with end rotating supports, the middle position of the strain movable plate close to the end fixing plate is fixedly connected with an intermediate rotating support, the intermediate rotating support is located between the end rotating supports, the upper and lower ends of the intermediate rotating support are fixedly connected with a rotating shaft, a side of the end rotating support close to the intermediate rotating support is provided with a socket corresponding to the rotating shaft, the rotating shaft is plugged into the socket, the end fixing plate and the strain movable plate are rotatably connected through the end rotating support, the intermediate rotating support and the rotating shaft.

[0014] In some embodiments of the above-mentioned scraper conveyor with automatic load unloading, a shielding flange is fixedly connected to the front edge of the end fixed plate close to the strain movable plate, the shape of the shielding flange close to the strain movable plate is cylindrical, the shape of the strain movable plate close to the end fixed plate is cylindrical, and the shielding flange is tightly matched with the side of the strain movable plate close to each other and is slidably connected; between two adjacent strain movable plates, one of the strain movable plates is fixedly connected to the front edge with a shielding flange, and the shape of the other strain movable plate close to the shielding flange is cylindrical and is tightly matched with the shielding flange and is slidably connected.

[0015] In some embodiments of the above-mentioned scraper conveyor with automatic load unloading, between the two scraping modules in the same scraper, a rounded corner avoidance portion is provided in front of the two strain movable plates, and the rounded corner radius of the rounded corner avoidance portion is greater than or equal to the distance between the front of the strain movable plate and the central axis of relative rotation of the two adjacent strain movable plates and is less than the thickness of the strain movable plate.

[0016] In some embodiments of the above-mentioned load-automatic pressure-relief scraper conveyor, the driving sprocket comprises a driving shaft and a power input sprocket, a driving outer sprocket, and a driving inner sprocket fixedly connected to the driving shaft, the groove plate is fixedly connected to a reinforcement plate near the sprocket, the driving shaft is rotatably connected to the reinforcement plate, the diameter of the driving inner sprocket is smaller than the diameter of the driving outer sprocket, the driving inner sprocket is located on the side of the driving outer sprocket close to the center plane between the two side plates, the power input sprocket is located on the side of one of the driving outer sprockets away from the center plane between the two side plates, and the power input sprocket is connected to the motor transmission through a belt or chain; the driven sprocket comprises a driven shaft and a driven outer sprocket and a driven inner sprocket fixedly connected to the driven shaft, the driven shaft and The reinforcing plate is rotatably connected, the outer chain is wrapped around the driving outer sprocket and the driven outer sprocket, and the inner chain is wrapped around the driving inner sprocket and the driving outer sprocket; the inner side surface of the side plate is fixedly connected with an inner support guide plate, and the inner support guide plate is arranged along the inner chain, and the outer side surface of the inner support guide plate is provided with an inner support guide groove, and the inner chain is located in the inner support guide groove, and the two ends of the inner support guide plate are respectively slidably connected with the driving inner sprocket and the outer side surface of the driven inner sprocket; the top surface and the bottom surface of the side plate are provided with outer support guide grooves, and the outer chain is located in the outer support guide groove, and the two ends of the side plate are respectively slidably connected with the driving outer sprocket and the outer side surface of the driving inner sprocket; the two end surfaces of the groove plate are respectively fixedly connected with the inner support guide plate.

[0017] In some embodiments of the above-mentioned scraper conveyor with automatic load unloading, the frame includes support legs, the support legs are located on the outer side of the side plate, and the upper ends of the support legs are fastened to the outer side surfaces of the side plates by bolts; the scraper conveyor with automatic load unloading also includes a fixed block, an operating port is provided on the side wall of the side plate, the operating port passes through the side plate, the fixed block is located at the operating port, the fixed block is located on the inner side of the trough plate, one end of the fixed block is fastened to the inner support guide plate by bolts, and the other end of the fixed block is fastened to the trough plate by bolts.

[0018] Beneficial effects of the present invention: During operation, the motor drives the sprocket to rotate through a chain or belt, and the sprocket drives each scraper to move on the outer side of the slot plate through a transmission chain to scrape the material on the slot plate in the conveying direction. When the material in front of the local scraper is too much, the friction is too large, or it is squeezed and stuck, the scraper can automatically rotate to the back to relieve pressure. The scraper can adaptively scrape the load to avoid damage, thereby improving safety, service life and work efficiency. Preferably, the closer the elastic plate is to the side plate, the greater the elastic force it exerts on the strain movable plate. When the load is too large, each strain movable plate gradually rotates from far to near relative to the side plate to avoid missed scraping.

[0019] When the strain movable plate rotates toward the back, the slider slides along the slide groove, the elastic plate bends, and the spring is compressed at the same time. The spring and the elastic plate together provide a damping effect for the strain movable plate to inhibit further rotation. The initial compression degree of the spring can be adjusted by adjusting the nut, thereby adjusting the resistance of the slider to slide during the bending process of the corresponding elastic plate, thereby adjusting the resistance of the corresponding strain movable plate to rotate toward the back. When the material, structure and installation status of each elastic plate are exactly the same, the closer the spring is to the side plate, the higher the initial compression degree, and the closer the elastic plate is to the side plate, the greater the elastic force applied to the strain movable plate. This greatly improves versatility and reduces the production cost of elastic plate-related components. It can also be adjusted at any time according to usage without the need for disassembly and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0021] Figure 1 is a schematic diagram of the structure of a scraper conveyor with automatic load unloading in an embodiment of the present application; Figure 2 It is a schematic diagram of the connection structure of the scraper, groove plate, side plate and sprocket in the embodiment of the present application; Figure 3It is a schematic diagram of the connection structure of the sprocket, the transmission chain, and the scraper in the embodiment of the present application; Figure 4 is a schematic diagram of the sprocket, transmission chain, and scraper connection structure in the embodiment of the present application from a front side perspective; Figure 5 It is a schematic diagram of the structure of the scraper in the embodiment of the present application; Figure 6 is a schematic diagram of the structure of the end fixing plate in an embodiment of the present application; Figure 7 It is a structural schematic diagram of the strain movable plate in the embodiment of the present application; Figure 8 It is a structural schematic diagram of the connection between the end fixed plate and the strain movable plate in the embodiment of the present application; Fig. 9 is a schematic diagram of the structure in which the elastic plate is connected to the adjusting guide rod in an embodiment of the present application; Fig.10 It is a schematic structural diagram of two strain movable plates connected to each other in two scraping and conveying modules in an embodiment of the present application; Fig.11 Schematic diagram of the back structure of the scraping and conveying module in the embodiment of the present application; Fig.12 is along Fig.11 Sectional view along line AA; Fig.13 is a schematic diagram of the structure of the connection between the sprocket and the side plate in the embodiment of the present application; Fig.14 It is a schematic diagram of the structure in which the side plate and the inner support guide plate are connected in an embodiment of the present application; Fig.15 It is a schematic diagram of the structure of the slot plate in the embodiment of the present application; Fig.16 It is a schematic diagram of the structure in which the driving sprocket is connected to the driving shaft in the embodiment of the present application; Fig.17 It is a schematic diagram of the connection structure between the driven sprocket and the driven shaft in an embodiment of the present application.

[0022] Description of reference numerals: 100, slot plate; 102, motor; 104, scraper; 106, driving sprocket; 108, driven sprocket; 110, side plate; 112, inner chain; 114, outer chain; 116, scraper module; 118, end fixing plate; 120, strain movable plate; 122, elastic plate; 124, slideway; 126, spring; 128, fixing strip; 130, slider; 132, limit block; 134, adjustment guide rod; 136, adjustment nut; 138, outer support; 140, inner support; 142, end rotation Support; 144, intermediate rotating support; 146, rotating shaft; 148, socket; 150, shielding flange; 152, rounded corner avoidance portion; 154, driving shaft; 156, power input sprocket; 158, driving outer sprocket; 160, driving inner sprocket; 162, reinforcement plate; 164, driven shaft; 166, driven outer sprocket; 168, driven inner sprocket; 170, inner support guide plate; 172, inner support guide groove; 174, outer support guide groove; 176, support leg; 178, fixing block; 180, operation port. DETAILED DESCRIPTION

[0023] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same figure numbers in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings need not be drawn to scale unless otherwise specified. The special word "exemplary" here means "used as an example, embodiment or illustrative". Any embodiment described here as "exemplary" is not necessarily interpreted as being superior to or better than other embodiments. In addition, in order to better illustrate the present application, those skilled in the art should understand that numerous specific details are given in each embodiment below. Without certain specific details, the present application can also be implemented. In some embodiments, methods, means and elements well known to those skilled in the art are not described in detail to highlight the subject matter of the present application.

[0024] Combination Figures 1 to 5As shown, the embodiment of the present application provides a scraper conveyor with automatic load unloading, including a frame, a slot plate 100, a transmission chain, a motor 102, a sprocket, and a plurality of scrapers 104. The ends of the scrapers 104 are connected to the transmission chain, the sprocket is rotatably connected to the frame, the slot plate 100 is fixedly connected to the frame, the transmission chain is wound around the sprocket, the motor 102 is connected to one of the sprockets through a belt or chain transmission, the motor 102 drives the sprocket to rotate through the belt or chain, thereby driving each scraper 104 to move in the conveying direction on the slot plate 100, the sprocket includes a driving sprocket 106 and a driven sprocket 108, the transmission chain is wound around the driving sprocket 106 and the driven sprocket 108, the driving sprocket 106 is driven by the motor 102 The frame includes two side plates 110, and the slot plate 100 is located between the two side plates 110 and is fixedly connected to the side plates 110; the transmission chain includes an inner chain 112 and an outer chain 114, and the inner chain 112 is arranged in parallel with the outer chain 114; the driving sprocket 106, the driven sprocket 108, the inner chain 112, and the outer chain 114 are symmetrically arranged with the central plane between the two side plates 110 as the symmetry plane; the inner chain 112 is located on the side of the outer chain 114 close to the slot plate 100, and the inner chain 112 is located on the inner side of the lateral projection of the area surrounded by the outer chain 114; the scraper 104 is arranged perpendicular to the slot plate 100, and the scraper 104 is arranged perpendicular to the conveying direction; at the end of the scraper 104, the scraper 104 is away from the slot One side of the plate 100 is connected to the outer chain 114, and the side of the scraper 104 close to the slot plate 100 is connected to the inner chain 112; each scraper 104 is composed of two scraping modules 116 symmetrically arranged with the central plane between the two side plates 110 as the symmetry plane, and the two scraping modules 116 are contacted at the central plane between the two side plates 110. The scraping module 116 includes an end fixing plate 118, a plurality of strain movable plates 120 and an elastic plate 122; the end fixing plate 118 is located between the strain movable plate 120 and the side plate 110, the top of the end fixing plate 118 is connected to the outer chain 114, and the bottom of the end fixing plate 118 is connected to the inner chain 112, and the strain movable plate 120 is perpendicular to the side. The plates 110 are arranged side by side in the direction of each other, and the elastic plates 122 are distributed at the junction of adjacent strain movable plates 120 and the strain movable plates 120 and the end fixed plates 118; one side of one of the elastic plates 122 is fixedly connected to the end fixed plate 118, and the other side is connected to the strain movable plate 120, and the two sides of the remaining elastic plates 122 are respectively connected to two adjacent strain movable plates 120; in the conveying direction, the elastic plates 122 are located on the back of the strain movable plates 120 and the end fixed plates 118; the adjacent strain movable plates 120 are rotatably connected with the axis perpendicular to the slot plate 100 as the rotation center line, and the strain movable plate 120 and the end fixed plate 118 are rotatably connected with the axis perpendicular to the slot plate 100 as the rotation center line.

[0025] During operation, the motor 102 drives the sprocket to rotate through a chain or belt, and the sprocket drives each scraper 104 to move on the outer side of the slot plate 100 through a transmission chain, and scrapes the material on the slot plate 100 in the conveying direction. When the material in front of the local scraper 104 is too much, the friction is too large, or it is squeezed and stuck, the scraper 104 can automatically rotate to the back to relieve pressure (remove the front squeeze load). The scraper 104 can adaptively scrape the load to avoid damage, thereby improving safety, service life and work efficiency. Preferably, the closer the elastic plate 122 is to the side plate 110, the greater the elastic force applied to the strain movable plate 120. When the load is too large, each strain movable plate 120 gradually rotates from far to near relative to the side plate 110 to avoid missed scraping.

[0026] In some exemplary implementations of the present embodiment, a slide groove 124 is provided on the back side of the strain movable plate 120, and the slide groove 124 passes through one side of the strain movable plate 120 in a direction away from the end fixed plate 118; one side of one of the elastic plates 122 is fixedly connected to the end fixed plate 118, and the other side is slidably connected to the slide groove 124 on the adjacent strain movable plate 120, and the remaining elastic plates 122 are fixedly connected to the strain movable plate 120 on one side close to the end fixed plate 118, and are slidably connected to the slide groove 124 on the adjacent strain movable plate 120 on one side away from the end fixed plate 118; a spring 126 is provided inside the slide groove 124, and the extension direction of the spring 126 is parallel to the slide groove 124, one end of the spring 126 is connected to the elastic plate 122, and the other end of the spring 126 is connected to the strain movable plate 120.

[0027] Combination Figures 6 to 10 As shown, in some exemplary implementations of the present embodiment, the two sides of the elastic plate 122 are fixedly connected with fixing strips 128, and the two fixing strips 128 are respectively fixedly connected to the back sides of the two adjacent strain movable plates 120, and one of the fixing strips 128 is fixedly connected to a slider 130 on a side close to the back side of the strain movable plate 120, and the slider 130 is located in the slide groove 124 and is slidably connected to the slide groove 124, and a limited block 132 is fixedly connected to the port of the slide groove 124, and an adjustment guide rod 134 is provided inside the slide groove 124, and one end of the adjustment guide rod 134 is rotated with the limit block 132 The spring 126 is mounted on the adjusting guide rod 134, and an adjusting nut 136 is threadedly connected to the adjusting guide rod 134. The spring 126 is located between the adjusting nut 136 and the slider 130, and the two ends of the spring 126 are respectively pressed and fitted with the slider 130 and the adjusting nut 136 on the side close to each other.

[0028] When the strain movable plate 120 rotates backward, the slider 130 slides along the chute 124, the elastic plate 122 bends, and at the same time, the spring 126 is compressed. The spring 126 and the elastic plate 122 jointly provide a damping effect to inhibit the further rotation of the strain movable plate 120. By adjusting the nut 136, the initial compression degree of the spring 126 can be adjusted, so as to adjust the resistance for pushing the slider 130 to slide during the bending process of the corresponding elastic plate 122, and thus the resistance for the corresponding strain movable plate 120 to rotate backward can be adjusted. For example, when the materials, structures and installation states of the elastic plates 122 are exactly the same, the closer the spring 126 is to the side plate 110, the higher the initial compression degree is, and the greater the elastic force exerted by the elastic plate 122 closer to the side plate 110 on the strain movable plate 120 can be realized. This greatly improves the versatility, reduces the production cost of the components related to the elastic plate 122, and can be adjusted at any time according to the usage situation without disassembly and replacement.

[0029] Combined with Fig.11 and Fig.12 As shown in

[0030] In some exemplary embodiments of the present embodiment, the cross-sectional shape of the fixing strip 128 is a U shape, the edge of the elastic plate 122 is clamped in the U-shaped cavity of the fixing strip 128, the elastic plate 122 is spaced from the back surface of the strain movable plate 120, the rotation center of the strain movable plate 120 is located at the middle position between the two fixing strips 128, the shape of the elastic plate 122 is arc-shaped, and the distance between the middle of the elastic plate 122 and the strain movable plate 120 is less than the distance between the two sides of the elastic plate 122 and the strain movable plate 120.

[0031] Combined with Figure 3 and Figure 6As shown, in some exemplary embodiments of the present embodiment, an outer support 138 and an inner support 140 are fixedly connected to one side of the end fixing plate 118 close to the side plate 110, the outer support 138 is located on the side of the end fixing plate 118 away from the slot plate 100, the inner support 140 is located on the side of the end fixing plate 118 close to the slot plate 100, the inner support 140 is located on the outside of the inner chain 112 and fixedly connected to the inner chain 112, and the outer support 138 is located on the outside of the outer chain 114 and fixedly connected to the outer chain 114.

[0032] The movement speeds of the inner chain 112 and the outer chain 114 are consistent, so they can drive the upper and lower ends of the end fixing plate 118 to move synchronously, avoiding tilting due to differential speed, and at the same time providing more stable power for the scraper 104 and improving the load strength of the scraper 104. It should be noted that the vertical arrangement of the scraper 104 and the slot plate 100 should be understood as an embodiment of the present invention, and it is not only necessary to set it vertically. The scraper 104 is tilted relative to the slot plate 100 in actual applications. Therefore, "vertical" should be understood as a general relative position. When a tilted arrangement is required, it is only necessary to stagger the inner support 140 and the outer support 138 at the upper and lower ends of the end fixing plate 118 in the front-to-back direction.

[0033] Combination Figures 6 to 10 As shown, in some exemplary implementations of the present embodiment, between two adjacent strain movable plates 120, the upper and lower ends of one strain movable plate 120 are fixedly connected to end rotating supports 142, and the middle position of the other strain movable plate 120 is fixedly connected to an intermediate rotating support 144, the intermediate rotating support 144 is located between the end rotating supports 142, and the upper and lower ends of the intermediate rotating support 144 are fixedly connected to a rotating shaft 146, and a side of the end rotating support 142 close to the intermediate rotating support 144 is provided with a socket 148 corresponding to the rotating shaft 146, and the rotating shaft 146 is plugged into the socket 148, and the two adjacent strain movable plates 120 are connected through the end rotating supports 142, the intermediate rotating supports 144, and the rotating shaft 146. The shaft 146 is rotatably connected; the end fixed plate 118 is fixedly connected to the end rotating support 142 at the upper and lower ends of one side close to the strain movable plate 120, and the middle rotating support 144 is fixedly connected to the middle position of one side close to the end fixed plate 118 of the strain movable plate 120. The middle rotating support 144 is located between the end rotating supports 142, and the upper and lower ends of the middle rotating support 144 are fixedly connected to the rotating shaft 146. The end rotating support 142 is provided with a socket 148 corresponding to the rotating shaft 146 on one side close to the middle rotating support 144. The rotating shaft 146 is plugged into the socket 148, and the end fixed plate 118 and the strain movable plate 120 are rotatably connected through the end rotating support 142, the middle rotating support 144, and the rotating shaft 146.

[0034] The rotation fulcrums of the strain movable plate 120 are distributed at the upper and lower ends, which can provide more stable support for the strain movable plate 120 when it rotates, avoid the strain movable plate 120 from tilting relative to the slot plate 100 when the upper and lower loads are uneven (if the initial state is already tilted, this statement should be understood as avoiding changes in the degree of tilt), and improve the stability and reliability of the rotational movement of the strain movable plate 120 (when the strain movable plate 120 changes relative to the initial tilt state, it is usually prone to getting stuck, so preventing the tilt state from changing is conducive to improving stability and reliability).

[0035] Combination Figure 6 , Fig.10 and Fig.12 As shown, in some exemplary implementations of the present embodiment, a shielding flange 150 is fixedly connected to the front edge of one side of the end fixing plate 118 close to the strain movable plate 120, and the shape of the side of the shielding flange 150 close to the strain movable plate 120 is cylindrical, and the shape of the side of the strain movable plate 120 close to the end fixing plate 118 is cylindrical, and the shielding flange 150 and the side of the strain movable plate 120 close to each other are tightly matched and slidably connected; between two adjacent strain movable plates 120, one of the strain movable plates 120 is fixedly connected to the front edge of the shielding flange 150, and the shape of the side of the other strain movable plate 120 close to the shielding flange 150 is cylindrical and tightly matched and slidably connected to the shielding flange 150.

[0036] The inner cylindrical surface of the shielding flange 150 is tightly matched with the outer cylindrical surface at the end of the strain movable plate 120. On the one hand, it can improve the stability and load strength of the rotational movement of the strain movable plate 120. On the other hand, it can avoid the generation of a gap in the front after the strain movable plate 120 rotates to the back (this gap is not a matching gap, and should be understood as a gap larger than the matching gap). The material in the front is not easy to enter the gap to inhibit the strain movable plate 120 from rotating forward and resetting. It can also reduce the wear on the inner surface of the gap and reduce the scraping caused by the material passing through the gap.

[0037] Combination Fig.10 As shown, in some exemplary implementations of the present embodiment, between the two scraping modules 116 in the same scraper 104, a rounded corner avoidance portion 152 is provided in front of the two strain movable plates 120, and the rounded corner radius of the rounded corner avoidance portion 152 is greater than or equal to the distance between the front of the strain movable plate 120 and the central axis of relative rotation between the two adjacent strain movable plates 120 and is less than the thickness of the strain movable plate 120.

[0038] The two adjacent strain movable plates 120 between the two scraping modules 116 in the same scraper 104 preferentially rotate toward the back side when overloaded, and the rotation center axis of the strain movable plate 120 is located in the center plane between the front and back sides. Therefore, during the rotation process, the distance between the front edges of the contact positions of the two adjacent strain movable plates 120 in front of the center plane will become smaller and smaller, and the rounded corners can prevent the two adjacent strain movable plates 120 from being squeezed and stuck during the rotation process toward the back side, and also provide higher reliability for the gradual rotation of each strain movable plate 120 relative to the side plate 110 from far to near (when the two adjacent strain movable plates 120 are squeezed and stuck, the other two adjacent strain movable plates 120 will still rotate to relieve pressure, so it will not affect the entire working process, but it will reduce the reliability of the gradual rotation of each strain movable plate 120 relative to the side plate 110 from far to near, thereby affecting the effect of adaptive pressure relief and work efficiency).

[0039] Combination Figure 1 , Figures 13 to 17 As shown, in some exemplary implementations of the present embodiment, the driving sprocket 106 includes a driving shaft 154 and a power input sprocket 156, a driving outer sprocket 158, and a driving inner sprocket 160 fixedly connected to the driving shaft 154. The groove plate 100 is fixedly connected to a reinforcement plate 162 near the sprocket. The driving shaft 154 is rotatably connected to the reinforcement plate 162. The diameter of the driving inner sprocket 160 is smaller than the diameter of the driving outer sprocket 158. The driving inner sprocket 160 is located on a side of the driving outer sprocket 158 ​​close to the center plane between the two side plates 110. The power input sprocket 156 is located on a side of one of the driving outer sprockets 158 away from the center plane between the two side plates 110. The power input sprocket 156 is connected to the motor 102 through a belt or chain. The driven sprocket 108 includes a driven shaft 164 and a driven outer sprocket 166, a driven inner sprocket 168 fixedly connected to the driven shaft 164. The outer chain 114 is wound around the driving outer sprocket 158 ​​and the driven outer sprocket 166, and the inner chain 112 is wound around the driving inner sprocket 160 and the driving outer sprocket 158; the inner side surface of the side plate 110 is fixedly connected with an inner support guide plate 170, which is arranged along the inner chain 112, and the outer side surface of the inner support guide plate 170 is provided with an inner support guide groove 172, and the inner chain 112 is located in the inner support guide groove 172, the two ends of the inner support guide plate 170 are respectively slidably connected to the outer side surfaces of the driving inner sprocket 160 and the driven inner sprocket 168; the top surface and the bottom surface of the side plate 110 are provided with an outer support guide groove 174, the outer chain 114 is located in the outer support guide groove 174, and the two ends of the side plate 110 are respectively slidably connected to the outer side surfaces of the driving outer sprocket 158 ​​and the driving inner sprocket 160; the two end surfaces of the slot plate 100 are respectively fixedly connected to the inner support guide plate 170.

[0040] The inner support guide groove 172 and the outer support guide groove 174 can support, guide and protect the inner chain 112 and the outer chain 114 respectively, so as to prevent the inner chain 112 and the outer chain 114 from deviating and shaking laterally and affecting the stability of the scraper 104. Preferably, a flexible shielding sheet (not shown in the figure) is fixedly connected to the outer side of the inner chain 112 and the outer chain 114, and the flexible shielding sheet covers the inner support guide groove 172 and the outer support guide groove 174 to prevent materials from falling into the inner support guide groove 172 and the outer support guide groove 174, and to prevent the inner chain 112 and the outer chain 114 from being stuck and worn by the materials. It also avoids the impact risk caused by the materials being squeezed, crushed and splashed by the inner chain 112 and the outer chain 114, thereby improving safety.

[0041] In some exemplary implementations of the present embodiment, the frame includes a support leg 176, which is located on the outer side of the side plate 110, and the upper end of the support leg 176 is fastened to the outer side surface of the side plate 110 by bolts; the scraper conveyor with automatic load unloading also includes a fixed block 178, and an operating port 180 is provided on the side wall of the side plate 110, and the operating port 180 passes through the side plate 110, and the fixed block 178 is located at the operating port 180, and the fixed block 178 is located on the inner side of the trough plate 100, one end of the fixed block 178 is fastened to the inner support guide plate 170 by bolts, and the other end of the fixed block 178 is fastened to the trough plate 100 by bolts.

[0042] The main body of the scraper conveyor with automatic load relief in this embodiment is mainly composed of three parts: the trough plate 100, the side plate 110, and the sprocket. It is easy to assemble and disassemble, and is convenient for transportation and storage after disassembly.

[0043] After the scraper conveyor in this embodiment is equipped with a top cover plate and a bottom cover plate (the cover plate is fixedly connected to the side plate 110), it can be used as an embedded scraper conveyor, which is easy to modify and has high versatility. For an embedded scraper conveyor, although it will not cause fragments to splash and injure people after the internal jam occurs, it will damage the scraper 104, the trough plate 100, the side plate 110, and the cover plate. Therefore, the scraper 104 is self-adaptive and automatically unloaded, which is conducive to extending the service life of the conveyor, and does not require shutdown maintenance, thereby improving work efficiency.

[0044] The “upper, lower, front, and rear” in this embodiment refer to the viewing directions in the accompanying drawings. Figure 1 As shown by the arrow with a direction, the conveying direction in this embodiment is forward conveying.

[0045] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A scraper conveyor with automatic load relief, comprising a frame, a slot plate (100), a transmission chain, a motor (102), a sprocket, and a plurality of scrapers (104), wherein the ends of the scrapers (104) are connected to the transmission chain, the sprocket is rotatably connected to the frame, the slot plate (100) is fixedly connected to the frame, the transmission chain is wound around the sprocket, the motor (102) is connected to one of the sprockets via a belt or chain transmission, the motor (102) drives the sprocket to rotate via the belt or chain, thereby driving each of the scrapers (104) to move on the slot plate (100) in the conveying direction, characterized in that: The sprocket comprises a driving sprocket (106) and a driven sprocket (108); the transmission chain is wound around the driving sprocket (106) and the driven sprocket (108); the driving sprocket (106) is in driving connection with the motor (102); the frame comprises two side plates (110); the slot plate (100) is located between the two side plates (110) and is fixedly connected to the side plates (110); the transmission chain comprises an inner chain (112) and an outer chain (114); The inner chain (112) is arranged in parallel with the outer chain (114); the driving sprocket (106), the driven sprocket (108), the inner chain (112), and the outer chain (114) are respectively arranged symmetrically with the central plane between the two side plates (110) as a symmetry plane; the inner chain (112) is located on a side of the outer chain (114) close to the slot plate (100), and the inner chain (112) is located on the inner side of the area surrounded by the outer chain (114) along the lateral projection; The scraper (104) is arranged perpendicularly to the trough plate (100), and the scraper (104) is arranged perpendicularly to the conveying direction; at the end of the scraper (104), the side of the scraper (104) away from the trough plate (100) is connected to the outer chain (114), and the side of the scraper (104) close to the trough plate (100) is connected to the inner chain (112); each of the scrapers (104) is composed of two scraping modules (116) symmetrically arranged with the central plane between the two side plates (110) as a symmetry plane, and the two scraping modules (116) are contacted at the central plane between the two side plates (110), and the scraping modules (116) include an end fixed plate (118), a plurality of strain movable plates (120) and an elastic plate (122); The end fixing plate (118) is located between the strain movable plate (120) and the side plate (110); the top of the end fixing plate (118) is connected to the outer chain (114); the bottom of the end fixing plate (118) is connected to the inner chain (112); the strain movable plates (120) are arranged side by side in a direction perpendicular to the side plate (110); the elastic plates (122) are distributed at the junction of the adjacent strain movable plates (120) and the strain movable plates (120) and the end fixing plates (118); one side of one of the elastic plates (122) is connected to the end The fixed plate (118) is fixedly connected, and the other side is connected to the strain movable plate (120), and the two sides of the remaining elastic plates (122) are respectively connected to two adjacent strain movable plates (120); in the conveying direction, the elastic plate (122) is located on the back side of the strain movable plate (120) and the end fixed plate (118); the adjacent strain movable plates (120) are rotatably connected with the axis perpendicular to the slot plate (100) as the rotation center line, and the strain movable plate (120) and the end fixed plate (118) are rotatably connected with the axis perpendicular to the slot plate (100) as the rotation center line.

2. The scraper conveyor with automatic load relief according to claim 1, characterized in that: A slide groove (124) is provided on the back of the strain movable plate (120), and the slide groove (124) penetrates one side of the strain movable plate (120) in a direction away from the end fixing plate (118); one side of one of the elastic plates (122) is fixedly connected to the end fixing plate (118), and the other side is slidably connected to the slide groove (124) on the adjacent strain movable plate (120); the other side of the elastic plates (122) is close to the end fixing plate (118). It is fixedly connected to the strain movable plate (120), and one side away from the end fixed plate (118) is slidably connected to the slide groove (124) on the adjacent strain movable plate (120); a spring (126) is provided inside the slide groove (124), and the extension and contraction direction of the spring (126) is parallel to the slide groove (124); one end of the spring (126) is connected to the elastic plate (122), and the other end of the spring (126) is connected to the strain movable plate (120).

3. The scraper conveyor with automatic load relief according to claim 2, characterized in that: Both sides of the elastic plate (122) are fixedly connected with fixing strips (128). The two fixing strips (128) are respectively fixedly connected with the back surfaces of two adjacent strain movable plates (120). One side of one of the fixing strips (128) close to the back surface of the strain movable plate (120) is fixedly connected with a slider (130). The slider (130) is located in the chute (124) and is slidably connected with the chute (124). A limiting block (132) is fixedly connected inside the port of the chute (124). An adjusting guide rod (134) is arranged inside the chute (124). One end of the adjusting guide rod (134) is rotatably connected with the limiting block (132). The other end of the adjusting guide rod (134) penetrates through the slider (130) and is slidably connected with the slider (130). The end of the adjusting guide rod (134) penetrating through the slider (130) is rotatably connected with the strain movable plate (120). The central axis of the adjusting guide rod (134) is parallel to the central axis of the chute (124). The spring (126) is sleeved on the adjusting guide rod (134). An adjusting nut (136) is threadedly connected to the adjusting guide rod (134). The spring (126) is located between the adjusting nut (136) and the slider (130). Both ends of the spring (126) are in pressing fit with the mutually approaching surfaces of the slider (130) and the adjusting nut (136).

4. The scraper conveyor with automatic load relief according to claim 3, characterized in that: The cross-sectional shape of the fixing strip (128) is in a C shape. The edge of the elastic plate (122) is clamped inside the C-shaped cavity of the fixing strip (128). The elastic plate (122) is spaced from the back surface of the strain movable plate (120). The rotation center of the strain movable plate (120) is located at the middle position between the two fixing strips (128). The shape of the elastic plate (122) is arc-shaped. The distance between the middle of the elastic plate (122) and the strain movable plate (120) is less than the distance between both sides of the elastic plate (122) and the strain movable plate (120).

5. The scraper conveyor with automatic load relief according to claim 1, characterized in that: One side of the end fixing plate (118) close to the side plate (110) is fixedly connected with an outer support (138) and an inner support (140). The outer support (138) is located on the side of the end fixing plate (118) away from the groove plate (100). The inner support (140) is located on the side of the end fixing plate (118) close to the groove plate (100). The inner support (140) is located outside the inner chain (112) and is fixedly connected with the inner chain (112). The outer support (138) is located outside the outer chain (114) and is fixedly connected with the outer chain (114).

6. The scraper conveyor with automatic load relief according to claim 1, characterized in that: Between two adjacent strain movable plates (120), one of the strain movable plates (120) is fixedly connected to an end rotating support (142) at its upper and lower ends, and the other strain movable plate (120) is fixedly connected to an intermediate rotating support (144) at its middle position, the intermediate rotating support (144) is located between the end rotating supports (142), the upper and lower ends of the intermediate rotating support (144) are fixedly connected to a rotating shaft (146), a socket (148) corresponding to the rotating shaft (146) is provided on a side of the end rotating support (142) close to the intermediate rotating support (144), the rotating shaft (146) is plugged into the socket (148), and the two adjacent strain movable plates (120) are rotatably connected via the end rotating support (142), the intermediate rotating support (144), and the rotating shaft (146); the end fixed The plate (118) is fixedly connected to end rotating supports (142) at the upper and lower ends of one side close to the strain movable plate (120); the strain movable plate (120) is fixedly connected to an intermediate rotating support (144) at the middle position of one side close to the end fixed plate (118); the intermediate rotating support (144) is located between the end rotating supports (142); the intermediate rotating support (144) is fixedly connected to a rotating shaft (146) at the upper and lower ends of the intermediate rotating support (144); a socket (148) corresponding to the rotating shaft (146) is provided on one side of the end rotating support (142) close to the intermediate rotating support (144); the rotating shaft (146) is plugged into the socket (148); the end fixed plate (118) and the strain movable plate (120) are rotatably connected via the end rotating support (142), the intermediate rotating support (144) and the rotating shaft (146).

7. The scraper conveyor with automatic load relief according to claim 6, characterized in that: A shielding flange (150) is fixedly connected to the front edge of the side of the end fixing plate (118) close to the strain movable plate (120); the side of the shielding flange (150) close to the strain movable plate (120) is cylindrical in shape; the side of the strain movable plate (120) close to the end fixing plate (118) is cylindrical in shape; the shielding flange (150) and the side of the strain movable plate (120) close to each other are tightly matched and slidably connected; between two adjacent strain movable plates (120), the front edge of one of the strain movable plates (120) is fixedly connected to the shielding flange (150); the side of the other strain movable plate (120) close to the shielding flange (150) is cylindrical in shape and tightly matched and slidably connected to the shielding flange (150).

8. The scraper conveyor with automatic load relief according to claim 1, characterized in that: Between the two scraping modules (116) in the same scraper (104), a rounded corner avoidance portion (152) is provided at the front edges of the two strain movable plates (120), and the rounded corner radius of the rounded corner avoidance portion (152) is greater than or equal to the distance between the front of the strain movable plate (120) and the central axis of relative rotation of two adjacent strain movable plates (120) and is less than the thickness of the strain movable plate (120).

9. The scraper conveyor with automatic load relief according to claim 1, characterized in that: The driving sprocket (106) comprises a driving shaft (154) and a power input sprocket (156) fixedly connected to the driving shaft (154), a driving outer sprocket (158), and a driving inner sprocket (160); the groove plate (100) is fixedly connected to a reinforcement plate (162) near the sprocket; the driving shaft (154) is rotatably connected to the reinforcement plate (162); the diameter of the driving inner sprocket (160) is smaller than the diameter of the driving outer sprocket (158); the driving inner sprocket (160) is located near the two driving outer sprockets (158); The power input sprocket (156) is located on one side of the central plane between the side plates (110), the power input sprocket (156) is located on one side of one of the driving outer sprockets (158) away from the central plane between the two side plates (110), and the power input sprocket (156) is connected to the motor (102) through a belt or a chain; the driven sprocket (108) includes a driven shaft (164) and a driven outer sprocket (166) and a driven inner sprocket (168) fixedly connected to the driven shaft (164), and the driven shaft (164) is rotatably connected to the reinforcement plate (162). The outer chain (114) is wound around the driving outer sprocket (158) and the driven outer sprocket (166), and the inner chain (112) is wound around the driving inner sprocket (160) and the driving outer sprocket (158); the inner side surface of the side plate (110) is fixedly connected to an inner support guide plate (170), the inner support guide plate (170) is arranged along the inner chain (112), the outer side surface of the inner support guide plate (170) is provided with an inner support guide groove (172), and the inner chain (112) is located in the inner support guide groove (172). The two ends of the inner support guide plate (170) are respectively slidably connected to the outer side surfaces of the driving inner sprocket (160) and the driven inner sprocket (168); the top surface and the bottom surface of the side plate (110) are provided with an outer support guide groove (174), the outer chain (114) is located in the outer support guide groove (174), and the two ends of the side plate (110) are respectively slidably connected to the outer side surfaces of the driving outer sprocket (158) and the driving inner sprocket (160); the two end surfaces of the slot plate (100) are respectively fixedly connected to the inner support guide plate (170).

10. The scraper conveyor with automatic load relief according to claim 9, characterized in that: The frame comprises a support leg (176), the support leg (176) is located on the outside of the side plate (110), and the upper end of the support leg (176) is fastened to the outer side surface of the side plate (110) by bolts; the load-automatic pressure-relieving scraper conveyor also comprises a fixed block (178), an operating port (180) is provided on the side wall of the side plate (110), the operating port (180) passes through the side plate (110), the fixed block (178) is located at the operating port (180), the fixed block (178) is located on the inner side of the slot plate (100), one end of the fixed block (178) is fastened to the inner support guide plate (170) by bolts, and the other end of the fixed block (178) is fastened to the slot plate (100) by bolts.

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