A discharging device for logistics transportation

Abstract

The present invention relates to the technical field of logistics transportation, and discloses a unloading device for logistics transportation, including a belt conveying device, which is composed of a loading rack, a conveyor belt and a servo motor. The conveyor belt is rotatably installed on the inner wall of the loading rack, and the servo motor is fixed on a side wall of the loading rack away from the conveyor belt. The output shaft of the servo motor penetrates through the side wall of the loading rack away from the conveyor belt. For this unloading device for logistics transportation, through the arranged cleaning part and driven part, the cleaning roller can clean the surface of the conveyor belt, and after cleaning for a period of time, the cleaning roller can be controlled to move up and down, so that the cleaning roller does not always keep in contact with the conveyor belt, avoiding the cleaning roller always contacting the conveyor belt and the cleaning roller and the conveyor belt always maintaining a friction state, which accelerates the wear of the conveyor belt. It realizes that while the conveyor belt can be cleaned, the service life of the conveyor belt is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics transportation, and particularly to a unloading device for logistics transportation. Background Art

[0002] Loading and unloading play an important role in logistics costs. In logistics activities, loading and unloading activities occur continuously and repeatedly, and their occurrence frequency is higher than that of other logistics activities. Moreover, each loading and unloading activity wastes a long time, so it often becomes the key to determine the logistics speed.

[0003] Currently, when unloading in logistics transportation, a belt conveyor is usually used for conveying. For example, a unloading device for logistics transportation and convenient classification disclosed in the publication number "CN109178826B" realizes unloading by placing the transported items on the belt conveyor for conveying. However, during the use process, due to the diversity of transported items, there is a high possibility that some dirt will adhere to the belt during the conveying process of the belt conveyor. After long-term use, sharp particles, hard blocks, etc. in the dirt will scratch and wear the belt, shortening the service life of the belt. Moreover, with continuous use, the dirt may enter the bearing parts of the rollers and idlers, affecting the normal operation of the bearings, accelerating the wear of the bearings, and affecting the service life of the belt conveyor. Therefore, we propose a unloading device for logistics transportation. Summary of the Invention

[0004] The purpose of the present invention is to provide a unloading device for logistics transportation to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A unloading device for logistics transportation, including a belt conveying device, the belt conveying device is composed of a loading rack, a conveyor belt and a servo motor. The conveyor belt is rotatably installed on the inner wall of the loading rack, the servo motor is fixed on a side wall of the loading rack away from the conveyor belt, the output shaft of the servo motor penetrates through a side wall of the loading rack away from the conveyor belt, and the output shaft of the servo motor is fixedly connected to the driving shaft of the conveyor belt. A support is fixed on the side wall of the loading rack, and a cleaning part for cleaning the conveyor belt and a driven part for controlling the up and down movement of the cleaning part are arranged on the support;

[0006] The cleaning part includes a sliding plate which penetrates through one side wall of the bracket close to the conveyor belt. The sliding plate and the bracket are penetrated by a rotating rod and are rotatably connected to the rotating rod. A disc is fixed to one end of the rotating rod away from the bracket, and a cleaning roller is fixed to one side of the disc away from the bracket. By contacting the surface of the conveyor belt with the cleaning roller, the cleaning roller can wipe and clean the conveyor belt, avoiding dirt sticking to the conveyor belt and affecting the service life of the conveyor belt. The side of the sliding plate is made of rubber and has a certain frictional force with the bracket, so that the sliding plate can move only when it is subjected to a certain degree of external force.

[0007] Preferably, the driven part includes: a transmission roller, which is in transmission connection with the conveyor belt. The transmission roller penetrates through the bracket and is rotatably connected to the bracket. A driving gear is fixed on one side of the transmission roller close to the bracket. The driving gear meshes with a driven gear. The driven gear and the bracket are penetrated by a rotating shaft. The rotating shaft is fixedly connected to the driven gear. The rotating shaft is rotatably connected to the bracket. Both the rotating shaft and the transmission roller penetrate through and are fixed with half gears. There are two groups of half gears. One group of half gears is fixed to the rotating shaft, and the other group of half gears is fixed to the transmission roller. A large gear is rotatably installed on one side of the sliding plate close to the conveyor belt. A transverse groove is formed on one side of the sliding plate close to the large gear. A spiral groove is formed on one side of the large gear close to the sliding plate. A slider is slidably installed inside the transverse groove. One end of the slider close to the large gear is inserted inside the spiral groove. The top of the sliding plate is penetrated by a vertical rod and is slidably connected to the vertical rod. A support rod is hinged to one side of the vertical rod away from the slider. One end of the support rod away from the slider is hinged to a fixed block. The fixed block is fixed on one side of the bracket close to the sliding plate. The vertical rod, the support rod and the fixed block are all provided with two groups, and the two groups of vertical rods, support rods and fixed blocks are symmetrically arranged. When the conveyor belt works, the transmission roller is driven to rotate. The transmission roller drives the driving gear to rotate. At this time, the driven gear drives the rotating shaft to rotate in the opposite direction. The transmission roller drives the half gear fixed on itself to rotate. When the teeth of the half gear rotate to mesh with the large gear, the large gear rotates. As the large gear gradually rotates, since the slider is limited by the transverse groove and can only move left and right, the large gear pushes the slider to slide along the transverse groove through the spiral groove formed on itself. When the slider abuts against a group of vertical rods and pushes the vertical rods to move together, since the fixed block cannot move, the vertical rods squeeze the support rods, thereby realizing pushing the whole sliding plate to move downward. After the sliding plate drives the large gear to move downward, the large gear moves to the position of the rotating shaft. As the rotating shaft drives the half gear fixed to itself to rotate, after the half gear rotates to mesh with the large gear, the large gear can rotate. Since the half gear fixed to the rotating shaft rotates in the opposite direction to the half gear fixed to the transmission roller, at this time the large gear can gradually control the slider to reset. As the slider abuts against the other group of vertical rods, the other group of vertical rods can push the whole sliding plate to reset upward by abutting against the support rods, realizing controlling the cleaning roller to move up and down, so that the cleaning roller does not always keep in contact with the conveyor belt, avoiding the cleaning roller always being in contact with the conveyor belt, and there is always a friction state between the cleaning roller and the conveyor belt, accelerating the wear of the conveyor belt. It realizes that while the conveyor belt can be cleaned, the service life of the conveyor belt is further improved.

[0008] Preferably, the bracket is also provided with an auxiliary part for cleaning the cleaning roller and an interference part for controlling the auxiliary part, the auxiliary part includes a reciprocating screw, the reciprocating screw is rotatably installed on a side wall of the bracket close to the conveyor belt, the reciprocating screw penetrates the moving block and is threadedly connected to the moving block, the moving block is penetrated by a guide rod and is slidably connected to the guide rod, the guide rod is fixed on a side wall of the bracket close to the reciprocating screw, the top of the moving block is connected to the cleaning brush through a linkage mechanism, when the reciprocating screw rotates, the moving block can move back and forth with the linkage mechanism and the cleaning brush, the cleaning brush can clean the cleaning roller back and forth, to avoid dirt remaining on the cleaning roller.

[0009] Preferably, the linkage mechanism includes: a link one, the bottom of the link one is fixed on the top of the moving block, the top of the moving block is hinged with a link two, the link one is hinged with a link three on the side close to the link two, the top of the link two is hinged with a link four, the end of the link three away from the link one is hinged at the bottom of the link four, the end of the link four away from the link two is hinged with a link five, the top of the link five is fixed to the cleaning brush, the link five is hinged with a link six on the side close to the link four, the end of the link six away from the link five is hinged at the top of the link three, the bottom of the link three is fixed with a torsion spring, the end of the torsion spring away from the link three is fixed to the link one, under the action of the torsion spring, the link three can swing upward at the position hinged with the link one, thereby driving the overall linkage mechanism to lift the cleaning brush and move it upward, but due to the limiting effect of the link six, the cleaning brush can move upward smoothly and always maintain a vertical state.

[0010] Preferably, the abutting portion includes a connecting gear which is rotatably mounted on the inner wall of the bracket. The connecting gear meshes with the driven gear. A ring gear is provided on the side of the connecting gear away from the conveyor belt. The connecting gear and the reciprocating lead screw are penetrated by a connecting rod. The reciprocating lead screw is slidably connected to the connecting rod. A return spring is fixed on the inner wall of the reciprocating lead screw. One end of the return spring away from the reciprocating lead screw is fixed to the connecting rod. One end of the connecting rod close to the bracket is hinged with a latch. The end of the latch away from the connecting rod contacts the connecting gear. A ring is rotatably mounted on the surface of the reciprocating lead screw. A connecting ring is slidably mounted on the surface of the ring. A hinge rod is hinged on the surface of the connecting ring. The end of the hinge rod away from the connecting ring is hinged to the bottom of the U-shaped frame. The U-shaped frame is slidably mounted on the side wall of the bracket close to the conveyor belt. An extrusion roller is fixed on the side of the disc away from the cleaning roller. An L-shaped abutting rod is fixed to the bottom of the U-shaped frame. The L-shaped abutting rod contacts the top of the third connecting rod. A fixed disc is fixed to the end of the rotating rod away from the disc. An elastic telescopic rod is hinged to the side of the fixed disc away from the rotating rod. The end of the elastic telescopic rod away from the fixed disc is hinged to the inner wall of the bracket. A spring plate is fixed to the inner wall of the bracket. One end of the spring plate away from the bracket is fixed to the elastic telescopic rod. It should be noted that the elastic telescopic rod is composed of a telescopic rod and a spring. The spring provides elastic force for the telescopic rod, so that it can bounce off when not stressed. It is assembled simply from existing technologies. When the sliding plate moves downward, the sliding plate drives the rotating rod, the disc and the fixed disc to move downward together. The fixed disc squeezes the elastic telescopic rod. At this time, under the limiting action of the spring plate, the elastic telescopic rod cannot swing to the side away from the spring plate. Therefore, the fixed disc can only squeeze the elastic telescopic rod to contract. As the fixed disc continues to move downward, the elastic telescopic rod can be squeezed to change its angle, thereby controlling the rotation of the fixed disc. When the sliding plate can no longer move downward, at this time the fixed disc just rotates 180°. The fixed disc drives the disc to rotate together through the rotating rod. The disc drives the cleaning roller to rotate, so that the cleaning roller rotates to the bottom position, so that the cleaning brush can contact the side of the cleaning roller in contact with the conveyor belt for cleaning. And when the disc rotates, the disc drives the extrusion roller to rotate together. The extrusion roller can no longer abut against the top of the U-shaped frame. Therefore, the U-shaped frame cannot continue to apply a downward force to the third connecting rod through the L-shaped abutting rod. Thus, the linkage mechanism can lift the cleaning brush to contact the bottom of the cleaning roller. When the sliding plate moves upward, the rotating rod drives the fixed disc to move upward together. At this time, under the pushing action of the spring plate, the elastic telescopic rod swings back to its original position, and the elastic telescopic rod gradually returns to its original position under its own elastic action, pushing the fixed disc to rotate 180° again, thereby realizing the control of the reset of the cleaning roller. After the cleaning roller moves upward and resets, it can re-abut against the bottom of the conveyor belt to achieve cleaning.

[0011] Compared with the prior art, the present invention provides a discharging device for logistics transportation, which has the following beneficial effects:

[0012] 1. The unloading device for logistics transportation, through the cleaning part and the driven part provided, the cleaning roller can clean the surface of the conveyor belt, and after cleaning for a period of time, the cleaning roller can be controlled to move up and down, so that the cleaning roller does not always keep in contact with the conveyor belt, avoiding the cleaning roller always contacting the conveyor belt, and always maintaining a friction state between the cleaning roller and the conveyor belt, accelerating the wear of the conveyor belt. It realizes that while the conveyor belt can be cleaned, the service life of the conveyor belt is further improved.

[0013] 2. The unloading device for logistics transportation, through the linkage mechanism provided, when the third connecting rod is not resisted, under the action of the torsion spring, the third connecting rod can swing upward around the position hinged to the first connecting rod, thereby driving the overall linkage mechanism to lift the cleaning brush upward. However, due to the limiting effect of the sixth connecting rod, the cleaning brush can move upward stably and always remain in a vertical state to squeeze the cleaning roller, realizing that the cleaning brush can clean the cleaning roller stably and effectively; at the same time, squeezing the water stains absorbed on the surface of the cleaning roller, avoiding damage to the surface of the conveyor belt caused by impurities adhering to the surface of the cleaning roller, which affects the service life of the conveyor belt.

[0014] 3. The unloading device for logistics transportation, when the cleaning roller moves downward and no longer contacts the conveyor belt, the elastic telescopic rod can pull the fixed disk to rotate, thereby controlling the cleaning roller to rotate to the bottom position, realizing that when the cleaning brush cleans the position where the cleaning roller contacts the conveyor belt, avoiding the splashing of the brushed-off impurities onto the surface of the conveyor belt, resulting in the phenomenon of re-adhesion. When the cleaning roller moves upward, under the pushing action of the elastic sheet, the elastic telescopic rod can swing back to its original position, so that the fixed disk drives the cleaning roller to rotate back to its original position again, thereby realizing that the cleaning roller can re-contact the conveyor belt and realizing that the conveyor belt can be cleaned again. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present invention;

[0016] Figure 2 is the sectional view structural schematic diagram of the present invention;

[0017] Figure 3 is the connection structural schematic diagram of the bracket, the driven part and the cleaning part of the present invention;

[0018] Figure 4 is the structural schematic diagram of the driven part in the state of removing the bracket of the present invention;

[0019] Figure 5 is the exploded sectional view structural schematic diagram of the connection between the large gear and the sliding plate of the present invention;

[0020] Figure 6 is the connection structural schematic diagram of the auxiliary part and the resisting part of the present invention;

[0021] Figure 7 Schematic structural diagram of the linkage mechanism of the present invention;

[0022] Figure 8 Schematic cross-sectional structural diagram of the connection between the reciprocating lead screw and the abutting part of the present invention;

[0023] Figure 9 Schematic structural diagram of the connection between the connecting gear, the connecting rod and the clamping rod of the present invention.

[0024] In the figure: 11, loading rack; 12, conveyor belt; 13, servo motor; 2, driven part; 21, driving roller; 22, driving gear; 23, driven gear; 24, rotating shaft; 25, half gear; 26, large gear; 27, transverse groove; 28, spiral groove; 29, slider; 210, vertical rod; 211, support rod; 212, fixed block; 3, cleaning part; 31, sliding plate; 32, rotating rod; 33, disc; 34, cleaning roller; 4, auxiliary part; 41, reciprocating lead screw; 42, moving block; 43, guide rod; 44, linkage mechanism; 45, cleaning brush; 441, connecting rod one; 442, connecting rod two; 443, connecting rod three; 444, connecting rod four; 445, connecting rod five; 446, connecting rod six; 447, torsion spring; 5, abutting part; 51, connecting gear; 52, connecting rod; 53, return spring; 54, clamping rod; 55, ring; 56, connecting ring; 57, articulated rod; 58, U-shaped frame; 59, pressing roller; 510, L-shaped abutting rod; 511, fixed disc; 512, elastic telescopic rod; 513, elastic sheet; 6, support. Specific embodiments

[0025] As Figures 1-9 shown, the present invention provides a technical solution: a unloading device for logistics transportation, including a belt conveying device, the belt conveying device is composed of a loading rack 11, a conveyor belt 12 and a servo motor 13, the conveyor belt 12 is rotatably installed on the inner wall of the loading rack 11, the servo motor 13 is fixed on a side wall of the loading rack 11 away from the conveyor belt 12, the output shaft of the servo motor 13 penetrates through a side wall of the loading rack 11 away from the conveyor belt 12, the output shaft of the servo motor 13 is fixedly connected with the driving shaft of the conveyor belt 12, a support 6 is fixed on the side wall of the loading rack 11, and a cleaning part 3 for cleaning the conveyor belt 12 and a driven part 2 for controlling the up and down movement of the cleaning part 3 are arranged on the support 6.

[0026] Among them, the cleaning part 3 includes a sliding plate 31. The sliding plate 31 penetrates through one side wall of the bracket 6 close to the conveyor belt 12. The sliding plate 31 and the bracket 6 are penetrated by a rotating rod 32 and are rotatably connected to the rotating rod 32. A disc 33 is fixed to one end of the rotating rod 32 away from the bracket 6. A cleaning roller 34 is fixed to one side of the disc 33 away from the bracket 6. By contacting the surface of the conveyor belt 12 with the cleaning roller 34, the cleaning roller 34 can wipe and clean the conveyor belt 12, avoiding dirt sticking to the conveyor belt 12 and affecting the service life of the conveyor belt 12. The side surface of the sliding plate 31 is made of rubber and has a certain frictional force with the bracket 6, so that the sliding plate 31 can move only when it is subjected to a certain degree of external force.

[0027] Among them, the driven part 2 includes a transmission roller 21. The transmission roller 21 is in transmission connection with the conveyor belt 12. The transmission roller 21 penetrates through the bracket 6 and is rotatably connected to the bracket 6. A driving gear 22 is fixed on one side of the transmission roller 21 close to the bracket 6. The driving gear 22 meshes with a driven gear 23. The driven gear 23 and the bracket 6 are penetrated by a rotating shaft 24. The rotating shaft 24 is fixedly connected to the driven gear 23. The rotating shaft 24 is rotatably connected to the bracket 6. Both the rotating shaft 24 and the transmission roller 21 penetrate through and are fixed with half gears 25. There are two groups of half gears 25. One group of half gears 25 is fixed to the rotating shaft 24, and the other group of half gears 25 is fixed to the transmission roller 21. A large gear 26 is rotatably installed on one side of the sliding plate 31 close to the conveyor belt 12. A transverse groove 27 is opened on one side of the sliding plate 31 close to the large gear 26. A spiral groove 28 is opened on one side of the large gear 26 close to the sliding plate 31. A slider 29 is slidably installed inside the transverse groove 27. One end of the slider 29 close to the large gear 26 is inserted inside the spiral groove 28. The top of the sliding plate 31 is penetrated by a vertical rod 210 and is slidably connected to the vertical rod 210. One side of the vertical rod 210 away from the slider 29 is hinged to a support rod 211. One end of the support rod 211 away from the slider 29 is hinged to a fixed block 212. The fixed block 212 is fixed on one side of the bracket 6 close to the sliding plate 31. There are two groups of the vertical rod 210, the support rod 211 and the fixed block 212, and the two groups of the vertical rod 210, the support rod 211 and the fixed block 212 are symmetrically arranged. When the conveyor belt 12 works, the transmission roller 21 is driven to rotate. The transmission roller 21 drives the driving gear 22 to rotate. At this time, the driven gear 23 drives the rotating shaft 24 to rotate in the opposite direction. The transmission roller 21 drives the half gear 25 fixed on itself to rotate. When the teeth of the half gear 25 rotate to mesh with the large gear 26, the large gear 26 rotates. As the large gear 26 gradually rotates, since the slider 29 is limited by the transverse groove 27 and can only move left and right, the large gear 26 pushes the slider 29 to slide along the transverse groove 27 through the spiral groove 28 opened on itself. When the slider 29 abuts against a group of vertical rods 210 and pushes the vertical rod 210 to move together, since the fixed block 212 cannot move, the vertical rod 210 squeezes the support rod 211, thereby realizing pushing the whole sliding plate 31 to move downward. After the sliding plate 31 drives the large gear 26 to move downward, the large gear 26 moves to the position of the rotating shaft 24. As the rotating shaft 24 drives the half gear 25 fixed to itself to rotate, after the half gear 25 rotates to mesh with the large gear 26, the large gear 26 can rotate. Since the half gear 25 fixed to the rotating shaft 24 rotates in the opposite direction to the half gear 25 fixed to the transmission roller 21, at this time, the large gear 26 can gradually control the slider 29 to reset. As the slider 29 abuts against the other group of vertical rods 210, the other group of vertical rods 210 can push the whole sliding plate 31 to reset upward by abutting against the support rod 211, realizing controlling the cleaning roller 34 to move up and down, so that the cleaning roller 34 does not always keep in contact and abut against the conveyor belt 12, and avoiding the cleaning roller 34 always abutting against the conveyor belt 12.The cleaning roller 34 and the conveyor belt 12 are kept in a friction state, which accelerates the wear of the conveyor belt 12, thereby achieving the cleaning of the conveyor belt 12 and further improving the service life of the conveyor belt 12.

[0028] In this embodiment, the bracket 6 is also provided with an auxiliary part 4 for cleaning the cleaning roller 34 and a resistance part 5 for controlling the auxiliary part 4. The auxiliary part 4 includes a reciprocating screw 41, which is rotatably installed on a side wall of the bracket 6 close to the conveyor belt 12. The reciprocating screw 41 penetrates the moving block 42 and is threadedly connected to the moving block 42. The moving block 42 is penetrated by the guide rod 43 and is slidably connected to the guide rod 43. The guide rod 43 is fixed on the side wall of the bracket 6 close to the reciprocating screw 41. The top of the moving block 42 is connected to the cleaning brush 45 through a linkage mechanism 44. When the reciprocating screw 41 rotates, the moving block 42 can move back and forth with the linkage mechanism 44 and the cleaning brush 45, and the cleaning brush 45 can clean the cleaning roller 34 back and forth to avoid dirt remaining on the cleaning roller 34.

[0029] It is worth noting that the linkage mechanism 44 includes a link rod 1 441, the bottom of the link rod 1 441 is fixed to the top of the moving block 42, the top of the moving block 42 is hinged with a link rod 2 442, the link rod 1 441 is hinged with a link rod 3 443 on one side close to the link rod 2 442, the top of the link rod 2 442 is hinged with a link rod 444, the end of the link rod 3 443 away from the link rod 1 441 is hinged to the bottom of the link rod 444, the end of the link rod 444 away from the link rod 2 442 is hinged with a link rod 5 445, the top of the link rod 5 445 is fixed to the cleaning brush 45, and the link rod 5 445 is hinged to the end of the link rod 444. The side is hinged with connecting rod six 446, and the end of connecting rod six 446 away from connecting rod five 445 is hinged at the top of connecting rod three 443, and a torsion spring 447 is fixed to the bottom of connecting rod three 443, and the end of torsion spring 447 away from connecting rod three 443 is fixed to connecting rod one 441. Under the action of torsion spring 447, connecting rod three 443 can swing upward at the position hinged with connecting rod one 441, thereby driving the overall linkage mechanism 44 to lift the cleaning brush 45 and move it upward, but due to the limiting effect of connecting rod six 446, the cleaning brush 45 can move upward smoothly and always maintain a vertical state. This structure is consistent with the pantograph structure.

[0030] In addition, the resistance part 5 includes a connecting gear 51, which is rotatably mounted on the inner wall of the bracket 6, the connecting gear 51 is meshed with the driven gear 23, and an annular tooth is provided on the side of the connecting gear 51 away from the conveyor belt 12. The connecting gear 51 and the reciprocating screw rod 41 are penetrated by a connecting rod 52, and the reciprocating screw rod 41 is slidably connected to the connecting rod 52. A return spring 53 is fixed on the inner wall of the reciprocating screw rod 41, and one end of the return spring 53 away from the reciprocating screw rod 41 is fixed to the connecting rod 52. A clamping rod 54 is hinged at one end of the connecting rod 52 close to the bracket 6, and one end of the clamping rod 54 away from the connecting rod 52 contacts with the connecting gear 51, a circular ring 55 is rotatably mounted on the surface of the reciprocating screw rod 41, and a connecting ring 56 is slidably mounted on the surface of the circular ring 55, and the surface of the connecting ring 56 The surface is hinged with a hinge rod 57, and one end of the hinge rod 57 away from the connecting ring 56 is hinged at the bottom of the U-shaped frame 58. The U-shaped frame 58 is slidably installed on a side wall of the bracket 6 close to the conveyor belt 12. A squeezing roller 59 is fixed to the side of the disc 33 away from the cleaning roller 34. An L-shaped resistance rod 510 is fixed to the bottom of the U-shaped frame 58. The L-shaped resistance rod 510 contacts the top of the connecting rod three 443. A fixed disk 511 is fixed to the end of the rotating rod 32 away from the disc 33. An elastic telescopic rod 512 is hinged to the side of the fixed disk 511 away from the rotating rod 32. The end of the elastic telescopic rod 512 away from the fixed disk 511 is hinged on the inner wall of the bracket 6. A spring piece 513 is fixed to the inner wall of the bracket 6. The end of the spring piece 513 away from the bracket 6 is fixed to the elastic telescopic rod 512. It is worth noting that the elastic telescopic rod 512 is composed of a telescopic rod and a spring. The spring provides elastic force to the telescopic rod so that it can be ejected when no force is applied. It is a simple assembly of the prior art. When the slide plate 31 moves downward, the slide plate 31 moves downward with the rotating rod 32, the disk 33 and the fixed disk 511. The fixed disk 511 squeezes the elastic telescopic rod 512. At this time, under the restriction of the spring sheet 513, the elastic telescopic rod 512 cannot swing to the side away from the spring sheet 513, and then the fixed disk 511 can only squeeze the elastic telescopic rod 512 to contract. As the fixed disk 511 continues to move downward, the elastic telescopic rod 512 can be squeezed to change its angle, thereby controlling the rotation of the fixed disk 511. When the slide plate 31 cannot continue to move downward, At this time, the fixed plate 511 rotates 180 degrees, and the fixed plate 511 drives the disc 33 to rotate together through the rotating rod 32, and the disc 33 drives the cleaning roller 34 to rotate, so that the cleaning roller 34 rotates to the bottom position, so that the cleaning brush 45 can contact the side of the cleaning roller 34 that contacts the conveyor belt 12 for cleaning, and when the disc 33 rotates, the disc 33 drives the squeezing roller 59 to rotate together, and the squeezing roller 59 cannot continue to resist the top of the U-shaped frame 58, and then the U-shaped frame 58 cannot continue to apply downward force to the connecting rod three 443 through the L-shaped resistance rod 510, so that the linkage mechanism 44 can lift the cleaning brush 45 to contact the bottom of the cleaning roller 34, and when the slide plate 31 moves upward, the rotating rod 32 drives the fixed plate 511 to move upward together,At this time, under the pushing action of the elastic piece 513, the elastic telescopic rod 512 swings and resets, and the elastic telescopic rod 512 gradually resets under its own elastic action, pushing the fixed disk 511 to rotate 180° again, so as to realize the reset of the cleaning roller 34. After the cleaning roller 34 moves upward and resets, it can re-contact the bottom of the conveyor belt 12 to realize cleaning.

[0031] As an application of this embodiment:

[0032] By starting the servo motor 13 to drive the conveyor belt 12 to work, the goods are unloaded through the conveyor belt 12. When the conveyor belt 12 is working, the cleaning roller 34 contacts the surface of the conveyor belt 12 to realize cleaning.

[0033] When the conveyor belt 12 is working, the driving roller 21 rotates. As the driving roller 21 rotates continuously, the driving roller 21 drives the semi-gear 25 fixed on itself to rotate. When the teeth of the semi-gear 25 rotate to mesh with the large gear 26, the large gear 26 rotates. As the large gear 26 gradually rotates, since the slider 29 is limited by the transverse groove 27 and can only move left and right, the large gear 26 pushes the slider 29 to slide along the transverse groove 27 through the spiral groove 28 opened on itself. When the slider 29 abuts against a group of vertical rods 210 and pushes the vertical rods 210 to move together, since the fixed block 212 cannot move, the vertical rods 210 squeeze the support rods 211, so as to realize the overall downward movement of the sliding plate 31. After the sliding plate 31 drives the large gear 26 to move downward, the large gear 26 moves to the position of the rotating shaft 24. As the rotating shaft 24 drives the semi-gear 25 fixed to itself to rotate, after the semi-gear 25 rotates to mesh with the large gear 26, the large gear 26 can rotate. Since the semi-gear 25 fixed to the rotating shaft 24 rotates in the opposite direction to the semi-gear 25 fixed to the driving roller 21, at this time, the large gear 26 can gradually control the slider 29 to reset. When the slider 29 abuts against another group of vertical rods 210, the other group of vertical rods 210 can push the sliding plate 31 to reset upward as a whole by abutting against the support rods 211, so as to realize the up and down movement control of the cleaning roller 34, so that the cleaning roller 34 will not always be in contact with the conveyor belt 12, avoiding the cleaning roller 34 always abutting against the conveyor belt 12, and always maintaining a friction state between the cleaning roller 34 and the conveyor belt 12, accelerating the wear of the conveyor belt 12, realizing the cleaning of the conveyor belt 12 while further improving the service life of the conveyor belt 12.

[0034] When the skateboard 31 moves downward, the skateboard 31 drives the rotating rod 32, the disc 33 and the fixed disc 511 to move downward together. The fixed disc 511 squeezes the elastic telescopic rod 512. At this time, under the limiting action of the elastic piece 513, the elastic telescopic rod 512 cannot swing to the side away from the elastic piece 513. Furthermore, the fixed disc 511 can only squeeze the elastic telescopic rod 512 to contract, and as the fixed disc 511 continues to move downward, the elastic telescopic rod 512 can be squeezed to change its angle, thereby controlling the rotation of the fixed disc 511. When the skateboard 31 can no longer move downward, at this time the fixed disc 511 just rotates 180°. The fixed disc 511 drives the disc 33 to rotate together through the rotating rod 32. The disc 33 drives the cleaning roller 34 to rotate, so that the cleaning roller 34 rotates to the position at the bottom, so that the cleaning brush 45 can contact the side of the cleaning roller 34 in contact with the conveyor belt 12 for cleaning. And when the disc 33 rotates, the disc 33 drives the pressing roller 59 to rotate together. The pressing roller 59 can no longer press against the top of the U-shaped frame 58. Furthermore, the U-shaped frame 58 cannot continue to apply a downward force to the link three 443 through the L-shaped abutting rod 510. Under the action of the torsion spring 447, the link three 443 can swing upward around the position hinged to the link one 441, thereby driving the overall linkage mechanism 44 to lift the cleaning brush 45 upward, so that the cleaning brush 45 contacts the bottom of the cleaning roller 34.

[0035] At this time, the link three 443 pushes the U-shaped frame 58 to move upward by abutting against the L-shaped abutting rod 510. The U-shaped frame 58 pulls the connecting ring 56 to move away from the connecting rod 52 through the hinge rod 57. Under the action of the return spring 53, the connecting rod 52 moves toward the side close to the reciprocating lead screw 41. The connecting rod 52 pushes the latch 54, so that the latch 54 is caught in the annular teeth on the connecting gear 51. Thus, the connecting gear 51 can drive the reciprocating lead screw 41 to rotate through the latch 54 and the connecting rod 52. At this time, the moving block 42 can drive the linkage mechanism 44 and the cleaning brush 45 to move back and forth, and the cleaning brush 45 can clean the cleaning roller 34 back and forth to prevent dirt from remaining on the cleaning roller 34.

[0036] When the skateboard 31 moves upward, the rotating rod 32 drives the fixed disk 511 to move upward together. At this time, under the pushing action of the elastic piece 513, the elastic telescopic rod 512 swings back to its original position, and the elastic telescopic rod 512 gradually returns to its original position under its own elasticity, pushing the fixed disk 511 to rotate 180° again, so as to control the cleaning roller 34 to return to its original position. After the cleaning roller 34 moves upward and returns to its original position, it can re-contact the bottom of the conveyor belt 12 to realize cleaning. At the same time, the pressing roller 59 abuts against the U-shaped frame 58, pushing the U-shaped frame 58 to move downward. The U-shaped frame 58 abuts against the link three 443 through the L-shaped abutting rod 510 to swing downward, so as to control the cleaning brush 45 to move downward. At the same time, the U-shaped frame 58 pushes the connecting ring 56 to move toward the side close to the connecting rod 52 through the hinge rod 57, realizing the reset of the connecting rod 52. The connecting rod 52 can then pull the clamping rod 54, so that the clamping rod 54 no longer gets stuck on the annular teeth, thus realizing the control of the reciprocating lead screw 41 to stop rotating.

[0037] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An unloading device for logistics transportation, comprising a belt conveying device, the belt conveying device is composed of a loading rack (11), a conveyor belt (12) and a servo motor (13), the conveyor belt (12) is rotatably installed on the inner wall of the loading rack (11), the servo motor (13) is fixed on a side wall of the loading rack (11) away from the conveyor belt (12), the output shaft of the servo motor (13) penetrates through a side wall of the loading rack (11) away from the conveyor belt (12), and the output shaft of the servo motor (13) is fixedly connected to the driving shaft of the conveyor belt (12), characterized in that: A bracket (6) is fixed to the side wall of the loading rack (11). A cleaning part (3) for cleaning the conveyor belt (12) and a driven part (2) for controlling the up and down movement of the cleaning part (3) are arranged on the bracket (6). The cleaning part (3) includes a sliding plate (31). The sliding plate (31) penetrates through the side wall of the bracket (6) close to the conveyor belt (12). The sliding plate (31) and the bracket (6) are penetrated by a rotating rod (32) and are rotatably connected to the rotating rod (32). A disc (33) is fixed to one end of the rotating rod (32) away from the bracket (6). A cleaning roller (34) is fixed to one side of the disc (33) away from the bracket (6). The driven part (2) includes a driving roller (21). The driving roller (21) is in transmission connection with the conveyor belt (12). The driving roller (21) penetrates through the bracket (6) and is rotatably connected to the bracket (6). A driving gear (22) is fixed to one side of the driving roller (21) close to the bracket (6). The driving gear (22) is meshed with a driven gear (23). The driven gear (23) and the bracket (6) are penetrated by a rotating shaft (24). The rotating shaft (24) is fixedly connected to the driven gear (23). The rotating shaft (24) is rotatably connected to the bracket (6). Both the rotating shaft (24) and the driving roller (21) are penetrated and fixed with half gears (25). There are two groups of the half gears (25). One group of the half gears (25) is fixed to the rotating shaft (24), and the other group of the half gears (25) is fixed to the driving roller (21). A large gear (26) is rotatably installed on one side of the sliding plate (31) close to the conveyor belt (12). A transverse groove (27) is formed on one side of the sliding plate (31) close to the large gear (26). A spiral groove (28) is formed on one side of the large gear (26) close to the sliding plate (31). A slider (29) is slidably installed inside the transverse groove (27). One end of the slider (29) close to the large gear (26) is inserted inside the spiral groove (28). The top of the sliding plate (31) is penetrated by a vertical rod (210) and is slidably connected to the vertical rod (210). A support rod (211) is hinged to one side of the vertical rod (210) away from the slider (29). One end of the support rod (211) away from the slider (29) is hinged to a fixed block (212). The fixed block (212) is fixed to one side of the bracket (6) close to the sliding plate (31). The bracket (6) is also provided with an auxiliary part (4) for cleaning the cleaning roller (34) and a resistance part (5) for controlling the auxiliary part (4), the auxiliary part (4) comprising a reciprocating screw (41), the reciprocating screw (41) being rotatably mounted on a side wall of the bracket (6) close to the conveyor belt (12), the reciprocating screw (41) passing through a moving block (42) and being threadedly connected to the moving block (42), the moving block (42) being passed through by a guide rod (43) and being slidably connected to the guide rod (43), the guide rod (43) being fixed on a side wall of the bracket (6) close to the reciprocating screw (41), the top of the moving block (42) being connected to a cleaning brush (45) via a linkage mechanism (44); The linkage mechanism (44) comprises: a first link (441), the bottom of the first link (441) being fixed to the top of a moving block (42), the top of the moving block (42) being hingedly connected to a second link (442), a third link (443) being hingedly connected to a side of the first link (441) close to the second link (442), a fourth link (444) being hingedly connected to the top of the second link (442), an end of the third link (443) being hingedly connected to a bottom of the fourth link (444), and the fourth link (444) being hingedly connected to a side of the first link (441) close to the second link (442). ) An end away from the second connecting rod (442) is hinged with a fifth connecting rod (445), the top of the fifth connecting rod (445) is fixed to the cleaning brush (45), a side of the fifth connecting rod (445) close to the fourth connecting rod (444) is hinged with a sixth connecting rod (446), an end of the sixth connecting rod (446) away from the fifth connecting rod (445) is hinged to the top of the third connecting rod (443), a torsion spring (447) is fixed to the bottom of the third connecting rod (443), and an end of the torsion spring (447) away from the third connecting rod (443) is fixed to the first connecting rod (441); The abutment portion (5) comprises a connecting gear (51), the connecting gear (51) being rotatably mounted on the inner wall of the bracket (6), the connecting gear (51) being meshed with the driven gear (23), the connecting gear (51) being provided with an annular tooth on the side away from the conveyor belt (12), the connecting gear (51) and the reciprocating screw rod (41) being penetrated by a connecting rod (52), the reciprocating screw rod (41) being slidably connected to the connecting rod (52), a return spring (53) being fixed on the inner wall of the reciprocating screw rod (41), one end of the return spring (53) away from the reciprocating screw rod (41) being fixed to the connecting rod (52), and one end of the connecting rod (52) close to the bracket (6) being hinged with a clamping rod (54).

2. The unloading device for logistics transportation according to claim 1, wherein: One end of the clamping rod (54) far away from the connecting rod (52) contacts the connecting gear (51). A ring (55) is rotatably mounted on the surface of the reciprocating lead screw (41). A connecting ring (56) is slidably mounted on the surface of the ring (55). A hinged rod (57) is hinged on the surface of the connecting ring (56). One end of the hinged rod (57) far away from the connecting ring (56) is hinged to the bottom of the U-shaped frame (58). The U-shaped frame (58) is slidably mounted on one side wall of the bracket (6) close to the conveyor belt (12). An extrusion roller (59) is fixed to one side of the disc (33) far away from the cleaning roller (34).

3. The unloading device for logistics transportation according to claim 2, wherein: An L-shaped abutting rod (510) is fixed to the bottom of the U-shaped frame (58). The L-shaped abutting rod (510) contacts the top of the third connecting rod (443). A fixed disc (511) is fixed to one end of the rotating rod (32) far away from the disc (33). An elastic telescopic rod (512) is hinged to one side of the fixed disc (511) far away from the rotating rod (32). One end of the elastic telescopic rod (512) far away from the fixed disc (511) is hinged to the inner wall of the bracket (6). A spring piece (513) is fixed to the inner wall of the bracket (6). One end of the spring piece (513) far away from the bracket (6) is fixed to the elastic telescopic rod (512).

Images