A self-cleaning conveying and unloading structure

Abstract

The present invention relates to the field of conveying technology, specifically to a self-cleaning conveying unloading structure, including a conveying frame, the number of which is two, and a conveying unloading assembly is arranged between the two conveying frames, the conveying unloading assembly includes two chains distributed front and back, and a plurality of equally distributed connecting plates are fixedly installed on the side surfaces of the two chains that are close to each other, and the connecting plates are fixedly installed on the links of the chains by bolts. During the unloading and transportation process, the upper and lower clamping arms and the two clamping heads are closed together to the middle to clamp the front and rear sealing edges of the water reducer packaging bag located at the top of the support bar, so that the water reducer packaging bag will not roll over during the transportation process along the top of the support bar, further ensuring the safety of unloading, and at the same time ensuring that the moving speed of the water reducer packaging bag is the same as the moving speed of the support bar, that is, the water reducer packaging bag will not slide along the inclined surface of the inclined unloading structure, so as to prevent the water reducer packaging bag from directly sliding off and causing the bag to be hit and opened.

Description

Technical Field

[0001] The invention relates to the technical field of conveying, in particular to a self-cleaning conveying material unloading structure. Background Art

[0002] Water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete. Most of them are anionic surfactants, such as lignin sulfonate, naphthalenesulfonic acid formaldehyde condensate sodium salt, etc. After being added to the concrete mixture, it has a dispersing effect on cement particles, can improve its workability, reduce water consumption, and improve the fluidity of the concrete mixture. After production, water reducer is usually packaged in packaging bags and transported off the line through a conveyor;

[0003] According to a Chinese patent with application publication number CN111302005A, a material unloading structure of a roller conveyor is disclosed. By arranging a support column, a support frame, a fixed shell, a connecting rod, a baffle, a first groove, a second groove, a third groove, a bearing seat, a limit mechanism, a buckle mechanism, a first through hole, a handle, a connecting rod, a first slider, a first slide slot, a second through hole, a third through hole, a limit slot, a second slider and a second slide slot, the problem that the existing roller conveyor is too high from the storage box during unloading, causing the goods to fall and be damaged, and being inconvenient for users to collect, is solved. However, during the unloading process, if the inclination angle of the above-mentioned unloading structure is too large, it is very easy to cause the goods to roll over, and the goods are easily damaged by collision on the baffle due to the excessively fast sliding speed of the falling. For this reason, we propose a self-cleaning conveying unloading structure to solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention provides the following technical solution: a self-cleaning conveying and unloading structure, comprising a conveying frame, wherein the number of the conveying frames is two, and a conveying and unloading assembly is provided between the two conveying frames;

[0005] The conveying and unloading assembly comprises two chains distributed front and back, a plurality of equally spaced connecting pieces are fixedly mounted on the adjacent side of the two chains, a support bar is fixedly mounted between the two adjacent connecting pieces, a clearance groove is formed through the side of the connecting piece close to the support bar, and an anti-rolling assembly is arranged inside the clearance groove;

[0006] The anti-roll assembly includes two clamping arms symmetrically distributed in the upper and lower parts, and a clamping head is fixedly installed on the end of the clamping arms, and two sealing plates distributed left and right are fixedly installed on the side of the connecting piece away from the support bar, and two arc guide rails distributed symmetrically in the upper and lower parts are fixedly installed on the side where the two sealing plates are close to each other, and two path pins distributed front and back are fixedly installed on the left side and rear side of the clamping arm, and slots are provided on the side where the upper and lower clamping arms are close to each other, and bolt strips are commonly inserted in the upper and lower slots, and a push strip is fixedly installed in the middle of the bolt strip, and a wheel groove is provided at the end of the push strip, and a guide wheel is rotatably installed in the wheel groove, and a roller guide strip is fixedly installed on the side where the two conveying frames are close to each other, and inclined guide surfaces are provided at both ends of the roller guide strip.

[0007] As a preferred solution of the present invention, the positions of the upper and lower arc guide rails correspond one-to-one to the positions of the upper and lower clamp arms, and the inner wall of the arc guide rail is slidably connected to the outer walls of the front and rear path pins at the corresponding positions.

[0008] As a preferred solution of the present invention, the slot is provided at an end of the clamp arm surface away from the clamp head, and the outer wall of the bolt strip is slidably connected to the inner wall of the slot.

[0009] As a preferred solution of the present invention, a sliding groove is formed through the adjacent side surfaces of the two sealing plates, and a sliding pin is fixedly installed on the left and right sides of the push strip, and the sliding pin is slidably installed inside the sliding groove.

[0010] As a preferred solution of the present invention, a puzzle board is fixedly installed between the two sealing plates, and the puzzle board is located at the end of the sealing plate away from the connecting plate. A square slot hole is penetrated through the side of the puzzle board close to the connecting plate, and the inner wall of the square slot hole is slidably connected to the outer wall of the push strip. Two reset springs distributed up and down are fixedly installed between the puzzle board and the slot.

[0011] As a preferred solution of the present invention, two wheel axles distributed left and right are rotatably installed between the two conveying frames, and two sprockets distributed front and back are fixedly installed on the outer walls of the wheel axles. The chain is sleeved on the periphery of the two left and right sprockets. A reduction motor is fixedly provided at the end of one of the conveying frames, and the output shaft of the reduction motor is fixedly connected to the end of one of the wheel axles.

[0012] As a preferred solution of the present invention, a gantry round tube frame is fixedly installed on the top of the two conveying frames, and a metering probe is fixedly installed on the horizontal end of the outer wall of the gantry round tube frame.

[0013] As a preferred solution of the present invention, sliding columns are fixedly installed at the bottom of the two conveying frames, and the number of the sliding columns is two. A support plate is slidably installed on the outer walls of the two sliding columns together, and a cleaning brush is detachably installed on the top of the support plate by bolts. A locking nut is screwed on the lower part of the outer wall of the sliding column, and the locking nut is located at the bottom of the support plate. A top spring is fixedly installed between the top of the locking nut and the bottom of the support plate.

[0014] As a preferred solution of the present invention, the connecting piece is fixedly mounted on the chain link by bolts, and the gap between two adjacent left and right supporting bars is 1.5 to 2 cm.

[0015] As a preferred solution of the present invention, the outer wall of the chuck is sleeved with a rubber sleeve.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the chain operation drives the connecting piece and the supporting strip to operate, and the water reducer packaging bag is transported downward from the conveyor belt. During the movement of the connecting piece along with the operation of the chain, the two clamping arms together with the clamping head and the pushing strip are further driven to move together. The pushing strip moves through the wheel groove to drive the guide wheel to move. When the guide wheel moves to the end of the roller guide strip, the guide inclined surface provided at the end of the roller guide strip causes the guide wheel to roll along the inclined surface at the end of the roller guide strip, and the pushing strip is pushed toward the direction close to the connecting piece. The movement of the push strip drives the bolt strip to move together. The movement of the bolt strip causes the upper and lower return springs to be compressed, and the bolt strip moves with the push strip through the connection with the two slots, pushing the two clamping arms together with the two clamping heads to move. The movement of the clamp arm is affected by the sliding connection between the path pin and the arc guide rail, which makes the movement of the clamp arm and the clamp head more stable. At the same time, due to the arc setting of the arc guide rail, when the path pin moves along the arc guide rail, the upper and lower clamp arms and the two clamp heads are closed together to the middle, and the front and rear sealed edges of the water reducer packaging bag located on the top of the support bar are clamped, so that the water reducer packaging bag will not roll over during the transportation along the top of the support bar, further ensuring the safety of material discharge. At the same time, it can ensure that the moving speed of the water reducer packaging bag is the same as the moving speed of the support bar, that is, the water reducer packaging bag will not slide along the inclined surface of the inclined material discharge structure, so as to prevent the water reducer packaging bag from directly sliding off and causing the bag to open due to impact.

[0018] 2. In the present invention, when the water-reducing agent packaging bag is conveyed to the rightmost position of the conveying frame, the guide wheel just rolls to the rightmost position of the roller guide bar, and the upper and lower return springs are rebounded, pulling the bolt bar to move in the direction away from the connecting piece, and through the connection with the upper and lower slots, the upper and lower clamping arms and the two clamps are driven to move together, so that the path pin slides in the opposite direction along the arc guide rail, further causing the upper and lower clamps to open, releasing the clamping effect on the front and rear edge sealing of the water-reducing agent packaging bag, making it convenient for the water-reducing agent packaging bag to be separated from this structure, and avoiding the water-reducing agent packaging bag from being stirred to the bottom of this feeding structure.

[0019] 3. In the present invention, a gantry round tube rack is provided to fix and support the metering probe to ensure the stability of the metering probe. The metering probe is further used to calculate the number of water reducer packaging bags passing through the bottom thereof, thereby automatically counting the number of water reducer packaging bags discharged, eliminating the need for manual counting of the number of discharged materials, thereby improving practicality.

[0020] 4. In the present invention, after the support bar moves to the bottom position, its surface rubs against the end of the cleaning brush during movement, so that the surface of the support bar is cleaned by the cleaning brush to remove the residual water reducer. At the same time, the elastic force of the top spring can ensure that the end of the cleaning brush has good contact with the surface of the support bar, thereby improving the cleaning effect of the support bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A schematic diagram of a partial cross-sectional structure;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0024] Figure 4 It is a structural schematic diagram of the conveying and unloading assembly in the present invention;

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of the plane structure;

[0026] Figure 6 It is a schematic diagram of the structure of the anti-roll assembly in the present invention;

[0027] Figure 7 It is a schematic diagram of the local detail structure of the anti-roll assembly in the present invention;

[0028] Figure 8 For the present invention Figure 4 A schematic diagram of the enlarged structure of part B;

[0029] Fig. 9 It is a schematic diagram of the structure of the cleaning brush in the present invention.

[0030] In the figure: 100, conveying frame; 201, chain; 202, connecting piece; 203, support bar; 204, give way groove; 205, clamping arm; 206, clamping head; 207, sealing plate; 208, arc guide rail; 209, path pin; 2010, slot; 2011, bolt bar; 2012, push bar; 2013, wheel groove; 2014, guide wheel; 2015, roller guide bar; 2016, return spring; 2017, slide groove; 2018, sliding pin; 2019, puzzle board; 2020, square slot hole; 300, sprocket; 301, wheel axle; 400, reduction motor; 500, gantry round tube rack; 600, metering probe; 701, slide column; 702, support plate; 703, cleaning brush; 704, locking nut; 705, top spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 9 The technical solution provided by the present invention specifically includes the following embodiments:

[0033] Embodiment 1: A self-cleaning conveying and unloading structure includes a conveying frame 100, the number of the conveying frames 100 is two, and a conveying and unloading assembly is provided between the two conveying frames 100;

[0034] The conveying and unloading assembly includes two chains 201 distributed front and back, and a plurality of equally spaced connecting pieces 202 are fixedly installed on the adjacent side of the two chains 201, and the connecting pieces 202 are fixedly installed on the chain links of the chains 201 by bolts, and a support bar 203 is fixedly installed between the front and rear connecting pieces 202, and the gap between the two adjacent support bars 203 on the left and right is 1.5 to 2 cm, and a clearance groove 204 is penetrated through the side of the connecting piece 202 close to the support bar 203, and an anti-rolling assembly is arranged inside the clearance groove 204;

[0035] The anti-roll assembly includes two clamping arms 205 symmetrically distributed up and down, with a clamping head 206 fixedly installed at the end of the clamping arm 205, and a rubber sleeve sleeved on the outer wall of the clamping head 206; two sealing plates 207 distributed left and right are fixedly installed on the side of the connecting piece 202 away from the support bar 203, and two arc guide rails 208 distributed symmetrically up and down are fixedly installed on the side where the two sealing plates 207 are close to each other; two path pins 209 distributed front and back are fixedly installed on the left side and rear side of the clamping arm 205, and the positions of the arc guide rails 208 distributed up and down correspond to the positions of the upper and lower clamping arms 205 one by one, and the inner wall of the arc guide rail 208 corresponds to the two front and rear path pins 209 at the corresponding positions. The outer wall is slidably connected, and a slot 2010 is provided on the side where the upper and lower clamping arms 205 are close to each other. The slot 2010 is provided at the end of the clamping arm 205 surface away from the clamping head 206. A bolt bar 2011 is inserted into the upper and lower slots 2010. The outer wall of the bolt bar 2011 is slidably connected to the inner wall of the slot 2010. A push bar 2012 is fixedly installed in the middle of the bolt bar 2011. A wheel groove 2013 is provided at the end of the push bar 2012. A guide wheel 2014 is rotatably installed inside the wheel groove 2013. A roller guide bar 2015 is fixedly installed on the side where the two conveying frames 100 are close to each other. Both ends of the roller guide bar 2015 are provided with inclined guide surfaces.

[0036] Specifically, the present embodiment supports the material discharging structure by installing a steel frame, installs the material discharging structure at the material discharging end of the conveyor belt, and sets the material discharging structure in an inclined state. The conveyor belt transports the water reducing agent packaging bag to the material discharging structure, and drives the connecting piece 202 and the supporting bar 203 to operate through the operation of the chain 201, so that the water reducing agent packaging bag is transported downward from the conveyor belt. During the movement of the connecting piece 202 along with the operation of the chain 201, the two clamping arms 205 and the clamping head 206 are further driven to The push bar 2012 moves together, and the push bar 2012 moves through the wheel groove 2013 to drive the guide wheel 2014 to move. When the guide wheel 2014 moves to the end of the roller guide bar 2015, the guide inclined surface set at the end of the roller guide bar 2015 causes the guide wheel 2014 to roll along the inclined surface at the end of the roller guide bar 2015, pushing the push bar 2012 in the direction close to the connecting piece 202. The movement of the push bar 2012 drives the bolt bar 2011 to move together, and the movement of the bolt bar 2011 causes the upper and lower two The return spring 2016 is compressed, and the bolt bar 2011 moves with the push bar 2012 through the connection with the two slots 2010, pushing the two clamping arms 205 together with the two clamping heads 206 to move. The movement of the clamping arms 205 is affected by the sliding connection between the path pin 209 and the arc guide rail 208, making the movement of the clamping arms 205 and the clamping heads 206 more stable. At the same time, due to the arc setting of the arc guide rail 208, the upper and lower clamping arms are in a state of being moved along the arc guide rail 208. 205 and the two clamps 206 are closed together to the middle to clamp the front and rear sealed edges of the water-reducing agent packaging bag located on the top of the support bar 203, so that the water-reducing agent packaging bag will not roll over during the transportation along the top of the support bar 203, further ensuring the safety of material discharge. At the same time, it can ensure that the moving speed of the water-reducing agent packaging bag is the same as the moving speed of the support bar 203, that is, the water-reducing agent packaging bag will not slide along the inclined surface of the inclined material discharge structure, so as to prevent the water-reducing agent packaging bag from directly sliding off and causing the bag to be hit and opened.

[0037] It is necessary to additionally explain that, when the water-reducing agent packaging bag is conveyed to the rightmost position of the conveying frame 100, the guide wheel 2014 just rolls to the rightmost position of the roller guide bar 2015, and the upper and lower return springs 2016 are rebounded, pulling the bolt bar 2011 to move away from the connecting piece 202, and through the connection with the upper and lower slots 2010, the upper and lower clamping arms 205 and the two clamps 206 are driven to move together, so that the path pin 209 slides in the opposite direction along the arc guide rail 208, further causing the upper and lower clamps 206 to open, releasing the clamping effect on the front and rear edge sealing of the water-reducing agent packaging bag, facilitating the water-reducing agent packaging bag to be separated from this structure, and avoiding the water-reducing agent packaging bag being stirred to the bottom of this unloading structure.

[0038] Furthermore, a slide groove 2017 is formed through the adjacent side surfaces of the two sealing plates 207, and a slide pin 2018 is fixedly installed on the left and right sides of the push strip 2012, and the slide pin 2018 is slidably installed inside the slide groove 2017;

[0039] By providing the sliding action of the sliding pin 218 and the sliding groove 217 , a precise guiding effect can be provided to the bolt bar 2011 , thereby ensuring the stability and smoothness of the movement of the bolt bar 2011 .

[0040] Furthermore, a jigsaw puzzle 2019 is fixedly installed between the two sealing plates 207. The jigsaw puzzle 2019 is located at one end of the sealing plate 207 away from the connecting piece 202. A square slot 2020 is penetrated through one side of the jigsaw puzzle 2019 close to the connecting piece 202. The inner wall of the square slot 2020 is slidably connected to the outer wall of the push strip 212. Two reset springs 2016 distributed up and down are fixedly installed between the jigsaw puzzle 2019 and the slot 2010.

[0041] By setting up the puzzle board 2019, the ends of the two sealing plates 207 are connected. On the one hand, the stability between the two sealing plates 207 is guaranteed. On the other hand, by opening the square groove hole 2020 on the surface of the puzzle board 2019, a precise guiding effect is provided for the push bar 2012 to ensure the stability and smoothness of the movement of the push bar 2012.

[0042] Embodiment 2: Two axles 301 distributed left and right are rotatably installed between two conveying frames 100, and two sprockets 300 distributed front and back are fixedly installed on the outer walls of the axles 301. The chain 201 is sleeved on the periphery of the two sprockets 300 on the left and right. A reduction motor 400 is fixedly installed at the end of one of the conveying frames 100, and the output shaft of the reduction motor 400 is fixedly connected to the end of one of the axles 301;

[0043] Specifically, the output shaft of the reduction motor 400 drives the wheel axle 301 to rotate, and the rotation of the wheel axle 301 drives the sprocket 300 to rotate together. Further, with the cooperation of the left and right wheel axles 301 and the left and right sprockets 300, the chain 201 rotates around the left and right sprockets 300, and the movement of the chain 201 drives the support bar 203 to rotate together, so as to transport and discharge the water reducer packaging bags.

[0044] Embodiment 3: A gantry round tube rack 500 is fixedly installed on the top of the two conveying frames 100, and a metering probe 600 is fixedly installed on the horizontal end of the outer wall of the gantry round tube rack 500;

[0045] Specifically, the present embodiment provides a gantry round tube rack 500 for fixing and supporting the metering probe 600 to ensure the stability of the metering probe 600, and further uses the metering probe 600 to calculate the number of water reducer packaging bags passing through the bottom thereof, thereby automatically counting the number of water reducer packaging bags discharged, eliminating the need for manual counting of the number of discharged materials, thereby improving practicality.

[0046] Embodiment 4: A slide post 701 is fixedly installed at the bottom of the two conveying frames 100. There are two slide posts 701. A support plate 702 is slidably installed on the outer walls of the two slide posts 701. A cleaning brush 703 is detachably installed on the top of the support plate 702 through bolts. A locking nut 704 is screwed on the lower part of the outer wall of the slide post 701. The locking nut 704 is located at the bottom of the support plate 702. A top spring 705 is fixedly installed between the top of the locking nut 704 and the bottom of the support plate 702.

[0047] Specifically, in this embodiment, after the support bar 203 moves to the bottom position, its surface rubs against the end of the cleaning brush 703 during movement, so that the surface of the support bar 203 is cleaned by the cleaning brush 703 to remove the residual water reducing agent. At the same time, the elastic force of the top spring 705 can ensure that the end of the cleaning brush 703 has good contact with the surface of the support bar 203, thereby improving the cleaning effect of the support bar 203.

[0048] In the present scheme, a self-cleaning conveying and unloading structure is supported by installing a steel frame when working, and the unloading structure is installed at the unloading end of the conveyor belt. At the same time, the unloading structure is set to an inclined state, and the conveyor belt conveys the water reducer packaging bag to the unloading structure. During this period, the output shaft of the reduction motor 400 drives the wheel shaft 301 to rotate, and the rotation of the wheel shaft 301 drives the sprocket 300 to rotate together. Further, under the cooperation of the left and right wheel shafts 301 and the left and right sprockets 300, the chain 201 is made to rotate around the left and right sprockets 300, and the operation of the chain 201 drives the connecting piece 202 and the support bar 203 to operate, so that the water reducer packaging bag is conveyed downward from the conveyor belt.

[0049] When the connecting piece 202 moves with the operation of the chain 201, it further drives the two clamping arms 205 together with the clamping head 206 and the pushing bar 2012 to move. The pushing bar 2012 moves through the wheel groove 2013 to drive the guide wheel 2014 to move. When the guide wheel 2014 moves to the end of the roller guide bar 2015, the guide inclined surface set at the end of the roller guide bar 2015 causes the guide wheel 2014 to roll along the inclined surface of the end of the roller guide bar 2015, pushing the pushing bar 2012 in the direction close to the connecting piece 202. The movement of the pushing bar 2012 drives the bolt bar 2011 to move together. The movement of the bolt bar 2011 causes the upper and lower return springs 2016 to be compressed, and the bolt bar 2011 moves with the push bar 2012 through the connection with the two slots 2010, pushing the two clamping arms 205 together with the two clamping heads 206. 6 moves, the movement of the clamp arm 205 is affected by the sliding connection between the path pin 209 and the arc guide rail 208, so that the movement of the clamp arm 205 and the clamp head 206 is more stable. At the same time, due to the arc setting of the arc guide rail 208, the upper and lower clamp arms 205 and the two clamp heads 206 are closed together in the middle during the movement of the path pin 209 along the arc guide rail 208, and the front and rear sealing edges of the water reducer packaging bag located at the top of the support bar 203 are clamped, so that the water reducer packaging bag will not roll over during the transportation along the top of the support bar 203, further ensuring the safety of material discharge, and at the same time, it can ensure that the moving speed of the water reducer packaging bag is the same as the moving speed of the support bar 203, that is, the water reducer packaging bag will not slide along the inclined surface of the inclined material discharge structure, so as to prevent the water reducer packaging bag from directly sliding off and causing the bag to be hit and opened;

[0050] When the water-reducing agent packaging bag is conveyed to the rightmost position of the conveying frame 100, the guide wheel 2014 just rolls to the rightmost position of the roller guide bar 2015, and the upper and lower return springs 2016 are rebounded, pulling the bolt bar 2011 to move away from the connecting piece 202, and driving the upper and lower clamping arms 205 and the two clamping heads 206 to move together through the connection with the upper and lower slots 2010, so that the path pin 209 slides in the opposite direction along the arc guide rail 208, further causing the upper and lower clamping heads 206 to open, releasing the clamping effect on the front and rear sealed edges of the water-reducing agent packaging bag, making it easier for the water-reducing agent packaging bag to be separated from the present structure, and avoiding the water-reducing agent packaging bag from being stirred to the bottom of the present feeding structure;

[0051] After the support bar 203 moves to the bottom position, its surface rubs against the end of the cleaning brush 703 during movement, so that the surface of the support bar 203 is cleaned by the cleaning brush 703 to remove the residual water reducing agent. At the same time, the elastic force of the top spring 705 can ensure that the end of the cleaning brush 703 has a good contact effect with the surface of the support bar 203.

[0052] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A self-cleaning conveying and unloading structure, comprising a conveying frame (100), characterized in that: The number of the conveying frames (100) is two, and a conveying and unloading assembly is provided between the two conveying frames (100); The conveying and unloading assembly comprises two chains (201) distributed front and back, a plurality of equally spaced connecting plates (202) are fixedly mounted on the adjacent side surfaces of the two chains (201), a support bar (203) is fixedly mounted between the two adjacent connecting plates (202), a clearance groove (204) is formed through the side surfaces of the connecting plates (202) close to the support bar (203), and an anti-rolling assembly is provided inside the clearance groove (204); The anti-roll assembly comprises two clamping arms (205) symmetrically distributed in the upper and lower parts, a clamping head (206) is fixedly installed at the end of each clamping arm (205), two sealing plates (207) distributed in the left and right are fixedly installed on the side of each connecting piece (202) away from the support strip (203), two arc-shaped guide rails (208) distributed in the upper and lower parts are fixedly installed on the side close to each other, two path pins (209) distributed in the front and back are fixedly installed on the left side and the rear side of each clamping arm (205), the positions of the arc-shaped guide rails (208) distributed in the upper and lower parts correspond to the positions of the upper and lower clamping arms (205), and the inner wall of the arc-shaped guide rail (208) is slidably connected to the outer wall of the two path pins (209) in the front and back parts at the corresponding positions, and a slot (2010) is provided on the side close to each other of the upper and lower clamping arms (205), and a bolt strip (2010) is inserted into the two slots (2010) together. 1), a push strip (2012) is fixedly installed in the middle of the bolt strip (2011), a wheel groove (2013) is opened at the end of the push strip (2012), a guide wheel (2014) is rotatably installed inside the wheel groove (2013), a roller guide strip (2015) is fixedly installed on the adjacent side of the two conveying frames (100), and a slide groove (2017) is opened through the adjacent side of the two sealing plates (207), the push strip (2012) is provided with a wheel groove (2013), and the guide wheel (2014) is rotatably installed inside the wheel groove (2013). A sliding pin (2018) is fixedly installed on the left side and the right side of (2012), and the sliding pin (2018) is slidably installed inside the slide groove (2017). Both ends of the roller guide bar (2015) are provided with inclined guide surfaces. When the guide wheel (2014) moves to the end of the roller guide bar (2015), the inclined guide surface provided at the end of the roller guide bar (2015) causes the guide wheel (2014) to roll along the inclined guide surface at the end of the roller guide bar (2015).

2. A self-cleaning conveying and unloading structure according to claim 1, characterized in that: The slot (2010) is formed at an end of the surface of the clamp arm (205) away from the clamp head (206), and the outer wall of the bolt strip (2011) is slidably connected to the inner wall of the slot (2010).

3. A self-cleaning conveying and unloading structure according to claim 2, characterized in that: A puzzle board (2019) is fixedly installed between the two sealing plates (207), and the puzzle board (2019) is located at one end of the sealing plate (207) away from the connecting plate (202). A square slot hole (220) is penetrated through one side of the puzzle board (2019) close to the connecting plate (202), and the inner wall of the square slot hole (2020) is slidably connected to the outer wall of the push strip (2012). Two reset springs (2016) distributed up and down are fixedly installed between the puzzle board (2019) and the slot (2010).

4. A self-cleaning conveying and unloading structure according to claim 3, characterized in that: Two wheel axles (301) distributed on the left and right are rotatably mounted between the two conveying frames (100); two sprocket wheels (300) distributed front and back are fixedly mounted on the outer walls of the wheel axles (301); the chain (201) is sleeved around the outer peripheries of the two sprocket wheels (300) on the left and right; a reduction motor (400) is fixedly mounted on the end of one of the conveying frames (100); and an output shaft of the reduction motor (400) is fixedly connected to the end of one of the wheel axles (301).

5. The self-cleaning conveying and unloading structure according to claim 4 is characterized in that: A gantry round tube frame (500) is fixedly mounted on the tops of the two conveying frames (100), and a metering probe (600) is fixedly mounted on the horizontal end of the outer wall of the gantry round tube frame (500).

6. A self-cleaning conveying and unloading structure according to claim 5, characterized in that: A sliding column (701) is fixedly installed at the bottom of the two conveying frames (100), and the number of the sliding columns (701) is two. A support plate (702) is slidably installed on the outer walls of the two sliding columns (701), and a cleaning brush (703) is detachably installed on the top of the support plate (702) by bolts. A locking nut (704) is screwed on the lower part of the outer wall of the sliding column (701), and the locking nut (704) is located at the bottom of the support plate (702). A top spring (705) is fixedly installed between the top of the locking nut (704) and the bottom of the support plate (702).

7. A self-cleaning conveying and unloading structure according to claim 6, characterized in that: The connecting piece (202) is fixedly mounted on the link of the chain (201) by means of bolts, and the gap between two adjacent supporting bars (203) on the left and right is 1.5 to 2 cm.

8. The self-cleaning conveying and unloading structure according to claim 7 is characterized in that: The outer wall of the clamp (206) is sleeved with a rubber sleeve.

Images