Heavy plate feeder for material conveying

Abstract

The present application relates to the technical field of plate feeder, and provides a heavy plate feeder for material conveying, which comprises a rack, two traction chains rotatably arranged, and a plurality of connecting assemblies arranged on each traction chain; a plurality of chain plates are arranged, and the two ends of each chain plate are slidably arranged on the corresponding connecting assemblies of the two traction chains; the chain plate can slide close to or away from the traction chain; a reciprocating lifting assembly is arranged on the rack and located between the two traction chains, and the reciprocating lifting assembly is used for spacing and pushing the chain plate upwards to make the chain plate vibrate up and down; the reciprocating lifting assembly and the chain plate are slidably arranged on the connecting assembly, the vibration of the chain plate during movement is realized, so that the material on the chain plate is redistributed under the action of vibration, and the uniformity of the material is improved. The technical problem of uneven distribution of material on the heavy plate feeder in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plate feeders, in particular to a heavy plate feeder for material conveying. BACKGROUND

[0002] The heavy plate feeder is also called heavy plate feeder, which is a continuous conveying equipment with heavy chain plate as the bearing, designed for handling large and heavy materials. It is usually installed below the storage bin as a conveying equipment between the bin and the primary crusher.

[0003] In the prior art, the heavy plate feeder can stably convey large load materials, but in actual use, due to the inverted conical shape of the bin and the uneven size of the materials inside the bin, it is easy to cause uneven thickness of materials at different positions after the valve plate at the bottom of the bin is opened. After the plate feeder delivers the materials to the primary crusher, the positions with more material accumulation will cause accumulation at the inlet of the primary crusher, while the positions with less material accumulation will be in an idle state at the inlet of the primary crusher, thereby affecting the working efficiency of the crusher. SUMMARY

[0004] To overcome the above-mentioned defects, the embodiments of the present application provide a heavy plate feeder for material conveying, which solves the technical problem of uneven distribution of materials on the heavy plate feeder in the prior art.

[0005] A heavy plate feeder for material conveying, comprising:

[0006] A rack is rotatably provided with two traction chains, and each traction chain is provided with a plurality of connection assemblies;

[0007] A plurality of chain plates are provided, and the two ends of the chain plate are respectively slidably arranged on the corresponding connection assemblies of the two traction chains, and the chain plate can slide close to or away from the traction chain;

[0008] A reciprocating lifting assembly is liftably arranged on the rack, and the reciprocating lifting assembly is located between the two traction chains, and the reciprocating lifting assembly is used for spacing and pushing the chain plate upward to make the chain plate vibrate up and down.

[0009] As a further technical solution, the reciprocating lifting assembly comprises:

[0010] A rotating rod is rotatably arranged on the rack and horizontally penetrates the annular cavities of the two traction chains, and the rotating rod is used for transmission connection with the driving member;

[0011] A connecting rod is swingably arranged at one end of the rotating rod, and the swing axis is arranged eccentrically to the rotating axis of the rotating rod;

[0012] A lifting top piece is arranged in a lifting manner on the frame and is rotationally connected to the other end of the connecting rod, the lifting top piece is located between the two traction chains, and the lifting top piece can be driven by the connecting rod to push the chain plates apart to lift the chain plates.

[0013] As a further technical solution, the lifting top piece is provided with a strip-shaped plate extending in the material conveying direction, and the lifting top piece is located between the two traction chains, the lifting top piece is provided with a buffer piece at the top, and the lifting top piece can drive the buffer piece to push the chain plates apart.

[0014] As a further technical solution, it further comprises a limiting assembly arranged on the frame and used for limiting the lifting movement of the traction chain, the limiting assembly comprises:

[0015] A plurality of support top wheels are rotationally arranged on the frame and are distributed along the length direction of the traction chain, and the support top wheels are used for supporting the chain links of the upper traction chain;

[0016] A limiting rod is arranged on the traction chain and is arranged along the main shaft parallel to the support top wheel;

[0017] An upper baffle is arranged on the frame, and a limiting space for limiting the lifting movement of the limiting rod is formed between the upper baffle and the support top wheel.

[0018] As a further technical solution, the connecting assembly comprises:

[0019] A frame body is arranged on the traction chain;

[0020] A sliding frame is slidingly arranged on the frame body and is connected to the chain plate;

[0021] An elastic piece acts on the frame body and the sliding frame at both ends, respectively, the elastic piece can provide a force for the sliding frame to move away from the frame body, so that the chain plate moves away from the traction chain.

[0022] As a further technical solution, the connecting assembly further comprises:

[0023] A guide rod is connected at one end to the sliding frame and is slidingly penetrated through the frame body at the other end, one end of the guide rod penetrating through the frame body is threadedly connected to a limiting nut, when the chain plate follows the traction chain to below the traction chain, the limiting nut is used for hanging the chain plate below the traction chain.

[0024] As a further technical solution, the connecting assembly further comprises:

[0025] The limiting top rod is arranged on the frame body, and when the sliding frame is pressed to be close to the frame body, the limiting top rod can be supported under the sliding frame to limit the downward displacement of the sliding frame.

[0026] As a further technical solution, it further comprises:

[0027] The extension rod is arranged on the sliding frame;

[0028] The limiting track is arranged on the rack and located at the feeding end of the traction chain, the inlet end of the limiting track is flared, the extension rod can enter the limiting track and move in the limiting track, and the height of the chain plate located in the limiting track section is higher than the height of the chain plate above the lifting top piece.

[0029] As a further technical solution, the chain plate comprises:

[0030] The main body is arranged on the sliding frame;

[0031] The connecting part is arranged at the front end of the main body, and the connecting part can be lapped on the main body of the adjacent chain plate;

[0032] The elastic baffle is arranged at one end of the front end of the connecting part, and the other end is attached to the top of the main body of the adjacent chain plate.

[0033] As a further technical solution, it further comprises:

[0034] The side baffle has two, both arranged on the rack, and two side baffles are located on both sides of the upper chain plate, the side baffle can block the material from falling off from the side of the chain plate, the side baffle has a plurality of negative pressure suction ports, the negative pressure suction port is communicated with the negative pressure device, and the dust between the two side baffles can be negatively adsorbed.

[0035] The beneficial effects of the present application are:

[0036] In this invention, a reciprocating lifting assembly is used to periodically push the chain plate, causing it to vibrate up and down. This vibration causes the material on the chain plate to shift and adjust during conveying, thereby improving the material distribution. Specifically, when material falls from the hopper onto the chain plate and forms an uneven distribution, the vibration of the chain plate causes material in thicker areas to move to thinner areas, reducing local accumulation. Simultaneously, the chain plate is slidably mounted on the connecting assembly, providing space for vibration and ensuring effective vibration action. The synchronous movement of the two traction chains ensures smooth conveying of the chain plate, preventing uneven material distribution from worsening due to unstable conveying. Compared to existing technologies that lack structures for actively adjusting material distribution, this solution fundamentally solves the problem of uneven material distribution through vibration as an active intervention, thus preventing subsequent efficiency reduction in the crusher due to uneven feeding and improving the overall operational stability of the production line. Furthermore, the reciprocating lifting assembly is located between the two traction chains, its placement does not interfere with the normal operation of the traction chains, and its compact structure is compatible with the basic framework of existing heavy-duty plate feeders, facilitating implementation and application. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 This is a front view structural diagram of the present invention;

[0040] Figure 3 This is a schematic diagram of the right-side structure of the present invention;

[0041] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the middle AA direction;

[0042] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0043] Figure 6 This is a schematic diagram of the structure after concealing the chain plate and a traction chain;

[0044] Figure 7 for Figure 6 Enlarged structural diagram at point C;

[0045] Figure 8 for Figure 6Enlarged structural view at D;

[0046] Figure 9 For Figure 6 Enlarged structural view at E;

[0047] Figure 10 For Figure 6 Schematic view of the bottom structure;

[0048] Figure 11 For Figure 10 Enlarged structural view at F;

[0049] Figure 12 Schematic view of the upper baffle and limiting track structure in the application;

[0050] Figure 13 Schematic view of two adjacent chain plates in the application;

[0051] Figure 14 For Figure 13 Schematic view of the cross-sectional structure;

[0052] In the figure: 100, rack, 110, sprocket, 120, traction chain, 200, connecting assembly, 130, chain plate, 300, reciprocating lifting assembly, 310, rotating rod, 320, driving piece, 330, connecting rod, 340, lifting top piece, 350, buffer piece, 400, limiting assembly, 410, support top wheel, 420, limiting rod, 430, upper baffle, 210, frame body, 220, sliding frame, 230, elastic piece, 240, guide rod, 250, limiting nut, 260, limiting top rod, 270, extension rod, 280, limiting track, 131, main body, 132, connecting part, 133, elastic baffle, 500, side baffle. DETAILED DESCRIPTION

[0053] The application will be further described below in conjunction with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the application, and not to limit the application.

[0054] In order to make the drawing simple, only the parts related to the application are shown in each figure, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some figures, only one of the parts with the same structure or function is shown, or only one of them is marked. In this text, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0055] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0058] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0059] like Figures 1-14 As shown, a heavy-duty plate feeder for material conveying according to an embodiment of the present invention is illustrated, including a frame 100, a plurality of connecting components 200, a plurality of chain plates 130 and a reciprocating lifting component 300. Two sets of sprockets 110 are rotatably mounted on the frame 100 via bearings. The two sets of sprockets 110 are rotatably connected to the frame 100 via axles. A drive motor is connected to one set of sprockets 110 via a gear set. Two traction chains 120 respectively mesh with the two sets of sprockets 110, and the chain links are rotatably connected by chain pins to form a closed ring transmission structure.

[0060] The connecting assembly 200 comprises a frame 210 fixedly arranged on the chain link of the traction chain 120, and the connection mode can be welding or bolt connection. The frame 210 is arranged with a sliding frame 220 in a lifting mode, the sliding frame 220 is slidably connected with the frame 210 through a guide rod 240, one end of the guide rod 240 is fixed on the sliding frame 220 through welding, the other end penetrates through a limiting hole on the frame 210 and is threadedly connected with a limiting nut 250, an elastic member 230 is sleeved outside the guide rod 240, and both ends are respectively abutted against the frame 210 and the sliding frame 220; the chain plate 130 comprises a main body 131, a connecting portion 132 and an elastic baffle 133. The main body 131 is fixed at one end of the sliding frame 220 away from the frame 210, the connecting portion 132 is integrally formed or welded to the front end of the main body 131 and can cover the main body 131 of the adjacent chain plate 130, one end of the elastic baffle 133 is fixed at the front end of the connecting portion 132, and the other end is attached to the top of the main body 131 of the adjacent chain plate 130, forming a continuous bearing surface. When the chain plate 130 is subjected to the gravity of the material, the lifting frame can be lowered along the guide rod 240 relative to the frame 210, and the elastic member 230 is compressed; when the reciprocating lifting assembly 300 lifts the chain plate 130, the elastic member 230 is stretched. Or after the material leaves the chain plate 130, the elastic member 230 restores the deformation and drives the lifting frame to rise and reset.

[0061] In the embodiment, the lifting frame is connected with the frame 210 through the guide rod 240, which provides a guiding effect for the lifting movement of the lifting frame and ensures the linearity and stability of the lifting movement of the lifting frame. The arrangement of the elastic member 230 enables the lifting frame to produce elastic displacement when subjected to external force and restores to the original position after the external force disappears. The elastic buffering effect enables the chain plate 130 not to be damaged due to rigid stress when subjected to the gravity of the material or the thrust of the lifting top piece 340, and the elastic potential energy accumulated by the elastic member 230 can enhance the vibration effect of the chain plate 130, promote the material to be more effectively redistributed, further solve the problem of uneven distribution of the material and improve the quality of material conveying.

[0062] When the chain plate 130 moves to the lower layer under the action of the traction chain 120, the chain plate 130 is located below the traction chain 120, at this time, the chain plate 130 drives the sliding frame 220 to descend under the action of gravity, the limiting nut 250 can be hung on the frame 210 on the one hand to avoid the sliding frame 220 from falling off, and on the other hand can utilize the collision between the limiting nut 250 and the frame 210 to generate slight vibration, thereby vibrating and falling the material particles remaining on the chain plate 130.

[0063] Further, a limiting top rod 260 is arranged on the frame body 210 by welding or bolt connection, and the position of the limiting top rod 260 corresponds to the position of the lifting frame when the lifting frame is pressed to be close to the frame body 210. When the lifting frame is close to the frame body 210 under the action of the gravity of the material or other external force, the limiting top rod 260 can support the lifting frame to limit the maximum displacement of the descending of the lifting frame, so as to prevent the damage of the elastic member 230 or the influence on the normal operation of the chain plate 130 caused by the excessive descending of the lifting frame.

[0064] Further, the reciprocating lifting assembly 300 includes a rotating rod 310, a connecting rod 330 and a lifting top piece 340. The rotating rod 310 is rotatably arranged on the rack 100 by a bearing to ensure the stability of the rotation thereof. One end of the rotating rod 310 is in transmission connection with a driving piece 320 (such as a motor) through a shaft coupling, so that the driving piece 320 can drive the rotating rod 310 to rotate around the axis thereof. One end of the connecting rod 330 is swingably arranged on the rotating rod 310 through a pin shaft, and the axis of the pin shaft is not collinear with the rotation axis of the rotating rod 310, so as to realize the swinging action of the connecting rod 330 when the rotating rod 310 rotates. The lifting top piece 340 is arranged on the rack 100 in a lifting manner through a sliding block guide rail structure, so that the lifting top piece 340 can stably lift in the vertical direction along the guide rail. The other end of the connecting rod 330 is also swingably arranged on the lifting top piece 340 through a pin shaft. When the driving piece 320 drives the rotating rod 310 to rotate, the connecting rod 330 on the rotating rod 310 swings, and in turn drives the lifting top piece 340 to lift on the rack 100. The lifting top piece 340 intermittently pushes the chain plate 130 to lift in the lifting process, so that the chain plate 130 generates up-down vibration.

[0065] In the embodiment, the transmission connection between the rotating rod 310 and the driving piece 320 provides a power source for the entire reciprocating lifting assembly 300, and ensures the stable operation of the assembly. The swing connection of the connecting rod 330 at two ends with the rotating rod 310 and the lifting top piece 340 respectively converts the circular motion of the rotating rod 310 into the lifting motion of the lifting top piece 340, and this motion conversion mode is simple in structure and efficient. Through such a structural arrangement, the chain plate 130 can generate regular up-down vibration, so as to promote the redistribution of the unevenly distributed part of the material on the chain plate 130 under the action of vibration, effectively solve the problem of uneven distribution of the material, improve the uniformity of the material conveying, and avoid the influence of the uneven accumulation of the material on the working efficiency of the subsequent crusher.

[0066] The top of the lifting top piece 340 is provided with a long strip plate extending along the conveying direction of the traction chain 120. The lifting top piece 340 is fixed on the sliding block by welding or bolt connection, and the sliding block cooperates with the guide rail on the rack 100 to realize the lifting setting of the lifting top piece 340. At the top of the lifting top piece 340, a buffer piece 350 is arranged by bonding or clamping. When the lifting top piece 340 is lifted under the driving of the connecting rod 330, the buffer piece 350 at the top first contacts and pushes the chain plate 130 passing above the lifting top piece 340.

[0067] In the embodiment, the long strip plate at the top of the lifting top piece 340 can cover multiple chain plates 130, so that multiple chain plates 130 can be pushed up and down at the same time, ensuring the consistency of the overall vibration of the chain plates 130 within a certain distance. The arrangement of the buffer piece 350 avoids the rigid collision between the lifting top piece 340 and the chain plate 130, reduces the wear and noise during the operation of the equipment, and prolongs the service life of the chain plate 130 and the lifting top piece 340. When the buffer piece 350 contacts the chain plate 130, the elastic deformation of the buffer piece 350 can make the chain plate 130 receive a softer pushing force, further improving the stability of the vibration of the chain plate 130, helping the material to be more evenly distributed on the chain plate 130, improving the stability and uniformity of the material conveying, and ensuring the stability of the subsequent crusher feeding.

[0068] Further, the limiting assembly 400 includes a support top wheel 410 and an upper baffle 430. The support top wheel 410 is rotatably arranged on the rack 100 through a shaft and a bearing, and the shaft is fixedly connected with the rack 100. The support top wheel 410 rotates around the shaft. A plurality of support top wheels 410 are uniformly and spacedly arranged along the length direction of the traction chain 120. The top of each support top wheel 410 contacts the chain link above the straight track of the traction chain 120, providing an upward supporting force for the traction chain 120. The limiting rod 420 is fixed on the chain pin of the traction chain 120 by welding or pin, and extends outward along the axis direction of the chain pin. The upper baffle 430 is arranged on the rack 100 by bolt connection or welding. The limiting space is formed between the upper baffle 430 and the support top wheel 410, and the limiting rod 420 on the chain pin of the traction chain 120 is located in the limiting space.

[0069] In this embodiment, the support top wheel 410 is distributed along the length direction of the traction chain 120, which can uniformly support the traction chain 120, ensure the stability of the traction chain 120 when running on the upper linear track, and prevent the traction chain 120 from being excessively stretched due to heavy material, thereby causing damage to the traction chain 120. The limiting space formed by the limiting rod 420 and the upper baffle 430 limits the upward displacement of the traction chain 120 in the vertical direction, further enhancing the stability of the traction chain 120 in operation. The setting of such a limiting assembly 400 makes the traction chain 120 maintain a stable position during operation, avoids the traction chain 120 from being stretched under the action of gravity of the material or the sliding action of the chain plate 130, ensures the uniformity of material conveying, and avoids the phenomenon of reducing the service life of the chain due to the instability of the traction chain 120.

[0070] The side baffle 500 is fixed on the rack 100 by the support bar, is located at both ends of the upper linear segment chain plate 130, the negative pressure suction port opened in the inner side is communicated with the negative pressure device through the pipeline, and the filter screen is arranged at the front end of the negative pressure suction port to avoid the blockage of the negative pressure suction port caused by the material entering the negative pressure suction port.

[0071] Further, it further includes an extension rod 270, the extension rod 270 is fixed on the sliding frame 220 by welding or bolt connection, extends outward along the axial direction of the sprocket 110, the limiting rail 280 is fixed on the rack 100 by bolt or welding and is located below the hopper and behind the reciprocating lifting assembly 300, the inlet end is flared, which is convenient for the extension rod 270 to enter the limiting rail 280 when the extension rod 270 moves with the traction chain 120.

[0072] The extension rod 270 and the limiting rail 280 can make the chain plate 130 always at the same height when the material falls from the hopper to the chain plate 130, avoid the collision between the material and the top of the chain plate 130 when the falling speed is the fastest, and at the same time, the reciprocating lifting assembly 300 at the bottom of the chain plate 130 rises to support the chain plate 130, thereby causing the chain plate 130 to be subjected to excessive force. On the other hand, the height of the chain plate 130 in this segment is higher than that of the chain plate 130 above the lifting top piece 340.

[0073] The working principle is that, in the conveying direction of the traction chain 120, the chain plate 130 passes through the feeding section, the vibrating section, the discharging section and the bottom circulating section in turn. When the driving motor starts, the sprocket 110 drives the traction chain 120 to circulate, and the chain plate 130 moves with the traction chain 120. When passing through the feeding section, the extension rod 270 enters the limiting track 280, and the extension rod 270 slides along the limiting track 280, so that the chain plate 130 is lifted to a certain height, and the transfer of the material in the silo to the chain plate 130 is completed in this section. Then the chain plate 130 enters the vibrating section, the rotating rod 310 in the vibrating section rotates under the drive of the driving part 320, the lifting top part 340 reciprocatingly lifts and lowers through the connecting rod 330, the buffer part 350 pushes the passing chain plate 130 from the bottom at intervals, so that the chain plate 130 rises with the sliding frame 220 and the elastic part 230 resets, and the up-and-down vibration is realized. At this time, the elastic baffle 133 rises and falls with the chain plate 130 to fit the adjacent chain plate 130, so as to avoid the material from falling through the gap, the negative pressure suction port of the side baffle 500 synchronously suctions the dust, the supporting top wheel 410 cooperates with the upper baffle 430 to limit the traction chain 120, and the stable transmission is ensured.

[0074] In the embodiment, the reciprocating lifting assembly 300 is arranged to push the chain plate 130 at intervals, so that the chain plate 130 vibrates up and down. The vibration can promote the displacement adjustment of the material on the chain plate 130 in the conveying process, so as to improve the material distribution state. Specifically, when the material falls from the silo to the chain plate 130 to form uneven distribution, the vibration of the chain plate 130 can make the material in the thicker area move to the thinner area, so as to reduce the local accumulation. At the same time, the chain plate 130 is slidingly arranged on the connecting assembly 200, which provides a movement space for the vibration and ensures that the vibration action can be effectively implemented. The synchronous movement of the two groups of traction chains 120 ensures the stable conveying of the chain plate 130, so as to avoid the aggravation of uneven material distribution due to unstable conveying. Compared with the structure lacking in the prior art which actively adjusts the material distribution, the present scheme fundamentally solves the problem of uneven material distribution by the active intervention mode of vibration, so as to avoid the efficiency reduction of the subsequent crusher due to uneven feeding, and improve the operation stability of the overall production line. In addition, the reciprocating lifting assembly 300 is located between the two traction chains 120, and the arrangement position does not interfere with the normal operation of the traction chain 120, and the structure layout is compact, which can be adapted to the basic frame of the existing heavy plate feeder and is convenient for implementation and application.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A heavy-duty apron feeder for material handling, characterized in that The utility model relates to a chain plate vibrating feeder, including: Frame (100), rotationally arranged with two traction chains (120), a plurality of connecting assemblies (200) are arranged on each traction chain (120); Chain plate (130) has a plurality of, both ends of chain plate (130) are slidably arranged on the connecting assembly (200) of two traction chains (120) correspondingly, chain plate (130) can slide close to or away from traction chain (120); Reciprocating lifting assembly (300) is arranged on frame (100) and is located between two traction chains (120), and reciprocating lifting assembly (300) is used to interval push chain plate (130) and ascend, so that chain plate (130) vibrates up and down; Reciprocating lifting assembly (300) includes: Rotary rod (310) is rotationally arranged on frame (100) and horizontally penetrates the annular cavity of two traction chains (120), and rotary rod (310) is used to drive transmission with driving part (320); Connecting rod (330) is swingingly arranged on rotary rod (310), and swing axis is eccentrically arranged with the rotary axis of rotary rod (310); Lifting top piece (340) is arranged on frame (100) and rotationally connected with the other end of connecting rod (330), and lifting top piece (340) is located between two traction chains (120), and lifting top piece (340) can be pushed up by connecting rod (330) and interval chain plate (130) and ascend; Connecting assembly (200) includes: Frame body (210) is arranged on traction chain (120); Sliding frame (220) is slidably arranged on frame body (210) and connected with chain plate (130); Elastic member (230) acts on frame body (210) and sliding frame (220) respectively, and elastic member (230) can provide the force of sliding frame (220) away from frame body (210), so that chain plate (130) is away from traction chain (120); Extension rod (270) is arranged on sliding frame (220); Limiting track (280) is arranged on frame (100) and located at the feeding end of traction chain (120), the inlet end of limiting track (280) is flared, extension rod (270) can enter limiting track (280) and move in limiting track (280), and the height of chain plate (130) located in limiting track (280) segment is higher than the height of chain plate (130) above lifting top piece (340); Chain plate (130) includes: Main body (131) is arranged on sliding frame (220); Connecting portion (132) is arranged at the front end of main body (131), and connecting portion (132) can be lapped on the main body (131) of adjacent chain plate (130). An elastic baffle (133) is arranged at one end of the connecting part (132) and adheres to the top of the main body (131) of the adjacent chain plate (130).

2. A heavy-duty pan feeder for material handling according to claim 1, characterized in that The lifting top piece (340) is provided with a strip-shaped plate extending along the material conveying direction on the top thereof, and is located between the two traction chains (120). The lifting top piece (340) is provided with a buffer piece (350) on the top thereof, and can drive the buffer piece (350) to push the chain plate (130) at intervals.

3. The heavy-duty pan feeder for material conveying according to any one of claims 1-2, characterized in that, The limiting assembly (400) is arranged on the rack (100) and is used for limiting the lifting movement of the traction chain (120). The limiting assembly (400) comprises: A plurality of support top wheels (410) are arranged on the rack (100) and are distributed at intervals along the length direction of the traction chain (120). The support top wheels (410) are used for supporting the chain links of the upper traction chain (120). A limiting rod (420) is arranged on the traction chain (120) and is arranged along the main shaft parallel to the support top wheel (410). An upper baffle (430) is arranged on the rack (100). The upper baffle (430) and the support top wheel (410) form a limiting space for limiting the lifting movement of the limiting rod (420).

4. The heavy-duty pan feeder for material conveying according to claim 1, characterized in that, The connecting assembly (200) further comprises: A guide rod (240) is connected at one end to the sliding frame (220) and is slidably penetrated through the rack body (210). The guide rod (240) is threadedly connected to a limiting nut (250) at the end penetrating through the rack body (210). When the chain plate (130) follows the traction chain (120) to below the traction chain (120), the limiting nut (250) is used to hang the chain plate (130) below the traction chain (120).

5. The heavy-duty pan feeder for material conveying according to claim 1, characterized in that, The connecting assembly (200) further comprises: A limiting top rod (260) is arranged on the rack body (210). When the sliding frame (220) is pressed to be close to the rack body (210), the limiting top rod (260) can be supported below the sliding frame (220) to limit the downward movement of the sliding frame (220).

6. A heavy-duty pan feeder for material handling according to claim 1, wherein Further comprising: Two side baffles (500) are arranged on the rack (100). The two side baffles (500) are respectively located on the two sides of the upper chain plate (130). The side baffles (500) can block the material from falling from the side of the chain plate (130). The side baffles (500) have a plurality of negative pressure suction ports which are communicated with a negative pressure device and can negatively adsorb the dust between the two side baffles (500).

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