Building material blanking device with metering scale

Abstract

The invention relates to the technical field of building materials, in particular to a building material discharging device with a metering weigher.The building material discharging device comprises a workbench and a conveying belt arranged in the workbench, a weighing machine is arranged on one side of the conveying belt, a sorting table is fixedly connected to the weighing machine, and a rotating sleeve is rotationally arranged on the side, away from the weighing machine, of the conveying belt; a first motor is fixedly connected to one end, located on the outer wall of the workbench, of a rotating shaft of the conveying belt, a transmission belt is connected between a rotating shaft of the rotating sleeve and the rotating shaft of the conveying belt, and a slag discharging groove is formed in the lower end of the side, away from the weighing device, of the workbench. According to the building material discharging device with the metering scale, the corresponding blocking strips move downwards, notches where the blocking strips are located are larger than the outer diameters of steel pipes, when the outer diameters of the steel pipes are uncertain, the steel pipes cannot be clamped during screening, the steel pipes with the outer diameters within the same range can be discharged and classified, and through the automatic grinding mechanism, the working efficiency is greatly improved. Steel pipes can be automatically fixed, and efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to a building material unloading device with a weighing scale. Background Art

[0002] With the development of society and the improvement of construction level, steel pipes are often used as supporting materials for scaffolding and other construction facilities during construction. The surface of steel pipes is prone to rust when not properly stored, and needs to be derusted and lubricated by equipment. When recycling scrap steel pipes, some steel pipes can be used directly after derusting, and usually manual or grinding equipment is required to grind and derust the steel pipes.

[0003] For example, in the invention with publication number CN108581778A, the inner and outer walls of the steel pipe can be effectively polished to achieve waste recycling, which is safe, stable and has a wide range of applications. However, most of the devices need to fix the steel pipe with a clamping device before polishing, which reduces the overall efficiency.

[0004] Moreover, during recycling, the thickness of the outer wall of the steel pipe is random due to the different degrees of rust on the outer wall before grinding. Therefore, if the diameter screening is placed before grinding, the diameters of some pipes are close, and the outer diameter of the rusted steel pipe will be close to the critical point of the screening tank, causing blockage. Steel pipes of different diameters after grinding require another machine for sorting, which further reduces the overall efficiency. For example, in the invention with publication number CN112934711A, parts of different diameters are made to fall from different tanks to different layers. However, when recycling steel pipes, the outer wall diameters of steel pipes with different rust thicknesses after grinding are also uncertain. In order to improve efficiency during sorting, multiple steel pipes are sorted at the same time. If one layer is blocked due to excessive discharge or the outer diameter of the steel pipe after grinding is close to the critical point of the screening tank, it will affect the subsequent sorting process. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a construction material unloading device with a weighing scale.

[0006] The present invention adopts the following technical scheme: a construction material unloading device with a weighing scale, comprising a workbench and a conveyor belt arranged in the workbench, a weighing device is arranged on one side of the conveyor belt, and a sorting platform is fixedly connected to the weighing device, a rotating sleeve is rotatably arranged on the side of the conveyor belt away from the weighing device, one end of the rotating shaft of the conveyor belt is located on the outer wall of the workbench and is fixedly connected to a motor, a transmission belt is connected between the rotating shaft of the rotating sleeve and the rotating shaft of the conveyor belt, a slag discharge groove is opened at the lower end of the side of the workbench away from the weighing device, and further comprises: The blocking bar is used to allow steel pipes of different diameters to be fed separately. The blocking bar is inserted up and down on the lower surface of the workbench, and the blocking bar is located at the lower side of the rotating sleeve. An air pump is fixedly connected between the upper surface of the bottom end of the blocking bar and the bottom end of the workbench; An automatic grinding mechanism, used for automatically clamping the recovered steel pipes of different diameters, wherein the automatic grinding mechanism is arranged on the rotating sleeve; And an automatic sorting mechanism, which is used for grinding the steel pipes and automatically sorting the steel pipes, wherein the automatic sorting mechanism is arranged in the automatic grinding mechanism.

[0007] As a further description of the above technical scheme: the automatic grinding mechanism includes a ring plate fixedly connected to the rotating sleeve, the upper side of the ring plate is located in the rotating sleeve and a grinding sleeve is provided, the inner wall of one side of the rotating sleeve is fixedly connected to a fixed block, a trapezoidal block is provided on the outer side of the fixed block, and one end of the trapezoidal block is close to the grinding sleeve, a rotating column is provided on the outer side of the other end of the trapezoidal block, and the rotating column is rotatably arranged in the rotating sleeve, the end of the rotating column away from the grinding sleeve is fixedly connected to a motor 2, a spring 3 is fixedly connected between the trapezoidal block and the rotating column, an insertion sleeve is fixedly connected to the end of the trapezoidal block close to the grinding sleeve, and the insertion sleeve is movably inserted in the trapezoidal block, a limiting groove is provided in the trapezoidal block, an inclined block is inserted in the limiting groove, and the inclined block is movably inserted in the insertion sleeve, a spring 4 is fixedly connected between one end of the inclined block and the insertion sleeve, and a threaded block is slidably provided on the side wall opposite to the fixed block.

[0008] As a further description of the above technical solution: the inner thread of the threaded block is connected to a threaded rod, and the end of the threaded rod extending outside the rotating sleeve is fixedly connected to a lever, a torsion spring is fixedly connected between the outer wall of the threaded rod and the rotating sleeve, an insertion block is movably inserted on the upper side of the end of the threaded block close to the grinding sleeve, a pressure rod is fixedly connected to the end of the insertion block away from the grinding sleeve, the other end of the pressure rod is in contact with a rotating rod, and the rotating rod is rotatably arranged in the threaded block, a torsion spring is fixedly connected between one end of the rotating shaft of the rotating rod and the threaded block, an insertion rod is movably inserted at the bottom end of the rotating rod, and the A slider is rotatably provided at the bottom end of the insertion rod, and the slider is slidably provided in the threaded block, an end of the threaded block close to the grinding sleeve is fixedly connected with an extrusion bevel ring, and the extrusion bevel ring is slidably provided in the threaded block, the other end of the extrusion bevel ring abuts against a plurality of slides arranged in a ring shape with equal intervals, and the slide is slidably provided up and down in the threaded block, a spring 1 is fixedly connected between the upper end of the slide and the threaded block, one end of the slide away from the extrusion bevel ring extends to the outside of the threaded block, a support block is movably inserted at the upper end of the slide, and a spring 2 is fixedly connected between the bottom end of the support block and the slide.

[0009] As a further description of the above technical solution: the automatic sorting mechanism includes a rotating shaft arranged in the grinding sleeve, the end of the rotating shaft away from the threaded block is fixedly connected to a motor three, and the motor three is fixedly connected to the outer wall of the grinding sleeve, the middle outer wall of the rotating shaft is fixedly connected to a rotating plate, the rotating plate is rotatably arranged on the inner wall of the grinding sleeve, the opposite sides of the outer wall of the rotating shaft are fixedly connected to a fixed sleeve, the end of the fixed sleeve away from the rotating shaft is movably inserted with a grinding strip, and a spring five is fixedly connected between one end of the grinding strip and the fixed sleeve, and the grinding strip is fixedly connected to A counterweight block, a lifting frame is fixedly connected to the grinding strip, the upper end of the lifting frame is slidably arranged in the rotating shaft, the upper part of one end of the lifting frame located in the rotating shaft extends outside the rotating shaft, and the end of the lifting frame extending outside the rotating shaft is staggered with the threaded block, a trigger rod is provided above the lifting frame located on the lower side, and the trigger rod is movably inserted in the rotating sleeve, a spring six is ​​fixedly connected between one end of the outer wall of the trigger rod and the rotating sleeve, the other end of the spring six extends outside the rotating sleeve, and a plurality of rebound buttons three are provided on the inner wall of the lower side of the rotating sleeve.

[0010] As a further description of the above technical solution: the blocking bars are distributed at equal intervals, and the upper ends of the blocking bars and the inner walls of the bottom ends of the rotating sleeve are both provided with inclined surfaces, and the top ends of the blocking bars are flush with the inner walls of the rotating sleeve.

[0011] As a further description of the above technical solution: a plurality of ring plates are provided on the rotating sleeve, and the plurality of ring plates are arranged in a ring shape with equal intervals.

[0012] As a further description of the above technical solution: a rebound button 1 is provided on the outer wall of one side of the rotating sleeve located on the side of motor 2, a squeeze bar 1 is fixedly connected to the inner wall of the workbench, and the squeeze bar 1 is located on the upper part of the side of the workbench away from the weighing device, and squeeze bars 2 and 3 are fixedly connected to the inner wall on the other side of the workbench, a rebound button 2 is provided at one end of the grinding sleeve close to the threaded block, and one end of the rebound button 2 is abutted against a sliding rod, the sliding rod is movably inserted in the rotating sleeve, and the other end of the sliding rod extends outside the rotating sleeve, the rebound button 2 and the rebound button 1 respectively control motor 3 and motor 2, and each rebound button 3 respectively controls each air pump.

[0013] As a further description of the above technical solution: the slots where the blocking strips are located are larger than the outer diameter of the steel pipe, and the second spring is a hard spring.

[0014] The present invention provides a construction material unloading device with a weighing scale through improvement, which has the following improvements and advantages compared with the prior art: First, the steel pipe will squeeze the grinding strip and the lifting frame upward, causing the lifting frame to stop at a certain position, causing the lifting frame to squeeze a certain trigger rod. When the rotating sleeve continues to rotate, the other end of a certain trigger rod will squeeze the corresponding rebound button three times, causing the air pump to start, thereby moving the corresponding blocking strip downward. The slots where the blocking strips are located are larger than the outer diameter of the steel pipe. This means that when the outer diameter of the steel pipe is uncertain, it will not get stuck during screening, so that steel pipes with outer diameters in the same range can be discharged and classified through the slots where the corresponding blocking strips are located; Second, the steel pipe will squeeze the insert inward, so that the slider can squeeze the extrusion bevel ring toward the grinding sleeve, so that the slide can approach the inner wall of the steel pipe, and then each support block will contact the inner wall of the steel pipe, thereby fixing the steel pipes of various outer diameters, and the grinding sleeve starts to rotate, and the bottom end of the grinding bar starts to grind and remove rust from the outer wall of the steel pipe. Through the automatic grinding mechanism, the steel pipe can be automatically fixed and ground, improving work efficiency; Thirdly, the unpolished grinding strip on the upper side rotates downward, which allows the polished grinding strip on the lower side to have time to cool down, preventing the continuous polishing from affecting the grinding strip, and when the lower grinding strip rotates to the inner cavity of the grinding sleeve, the impurities on the grinding strip can also be scraped off by the bottom end of the grinding sleeve, and when the upper grinding strip rotates downward, due to the elastic force of the spring five, the grinding strip will be quickly ejected outward, and the grinding strip can not only grind, but also knock on the outer wall of the steel pipe to shake off the impurities adhering to the outer wall of the steel pipe, and at this time, the corresponding steel pipe rotates to the slag discharge groove, and the impurities will be shaken out, and a counterweight block is provided so that when the upper grinding strip rotates, due to the centrifugal force, the grinding strip will be ejected from the grinding sleeve with greater force, further increasing the knocking and cleaning effect; To summarize, the corresponding blocking strips are moved downward, and the slots where the blocking strips are located are larger than the outer diameter of the steel pipe. This ensures that when the outer diameter of the steel pipe is uncertain, it will not get stuck during screening, so that steel pipes with outer diameters in the same range can be classified through the slots where the corresponding blocking strips are located. Through the automatic grinding mechanism, the steel pipes can be automatically fixed and ground, thereby improving work efficiency. The grinding strips can not only grind, but also knock on the outer wall of the steel pipe to shake off impurities adhered to the outer wall of the steel pipe. At this time, the corresponding steel pipe rotates to the slag discharge trough, and the impurities will be shaken out. A counterweight block is provided so that when the upper grinding strip rotates, due to the centrifugal force, the grinding strip pops out of the grinding sleeve with greater force, further increasing the knocking and cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments: Figure 1 A schematic diagram of a construction material unloading device with a weighing scale provided in an embodiment of the present invention Figure 1 ; Figure 2A schematic diagram of a construction material unloading device with a weighing scale provided in an embodiment of the present invention Figure 2 ; Figure 3 A three-dimensional cross-sectional view of a workbench provided by an embodiment of the present invention; Figure 4 A three-dimensional cross-sectional view of a rotating sleeve provided in an embodiment of the present invention; Figure 5 A schematic diagram of the structure of a ring plate provided in an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a grinding sleeve provided in an embodiment of the present invention; Figure 7 A three-dimensional cross-sectional view of a threaded block provided in an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a slide provided by an embodiment of the present invention; Fig. 9 A schematic diagram of the structure of a trapezoidal block provided in an embodiment of the present invention; Fig.10 A schematic diagram of the structure of a socket provided in an embodiment of the present invention; Fig.11 A three-dimensional cross-sectional view of a limiting groove provided in an embodiment of the present invention; Fig.12 A schematic diagram of the structure of a rotating shaft provided in an embodiment of the present invention; Fig.13 A schematic diagram of the structure of a rotating plate provided in an embodiment of the present invention; Fig.14 A three-dimensional cross-sectional view of a rotating shaft provided in an embodiment of the present invention; Fig.15 A partial cross-sectional view of a workbench provided by an embodiment of the present invention; Fig.16 for Figure 4 The enlarged view of point A in the middle; Fig.17 for Figure 5 The enlarged view of point B in the middle; Fig.18 for Figure 7 Enlarged view of point C in the middle; Fig.19 for Figure 7 The enlarged view of point D in the middle; Fig. 20 for Fig.15 Enlarged view of point E in the middle.

[0016] In the figure: 1, workbench; 2, conveyor belt; 3, weighing device; 4, sorting table; 5, motor 1; 6, rotating sleeve; 7, automatic grinding mechanism; 71, ring plate; 72, motor 2; 73, rebound button 1; 74, extrusion strip 1; 75, grinding sleeve; 76, fixed block; 77, trapezoidal block; 78, motor 3; 79, threaded block; 710, lever; 711, torsion spring 1; 712, extrusion strip 2; 713, insert block; 714, pressure rod; 715, rotating rod; 716, slider; 717, insert rod; 718, extrusion bevel ring; 719, carriage; 720, spring 1; 72 1. Support block; 722. Spring 2; 723. Rotating column; 724. Spring 3; 725. Insert sleeve; 726. Limiting groove; 727. Oblique block; 728. Spring 4; 729. Torsion spring 2; 8. Automatic sorting mechanism; 81. Rotating shaft; 82. Rebound button 2; 83. Fixed sleeve; 84. Grinding strip; 85. Lifting frame; 86. Sliding rod; 87. Extrusion strip 3; 88. Rotating plate; 89. Spring 5; 810. Counterweight block; 811. Trigger rod; 812. Spring 6; 813. Rebound button 3; 9. Air pump; 10. Slag discharge trough; 11. Transmission belt; 12. Blocking strip. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0018] See also Figure 1 - Fig. 20 The embodiment of the present invention provides a technical solution: a construction material unloading device with a weighing scale, comprising a workbench 1 and a conveyor belt 2 arranged in the workbench 1, a weighing device 3 is arranged on one side of the conveyor belt 2, and a sorting platform 4 is fixedly connected to the weighing device 3, a rotating sleeve 6 is rotatably arranged on the side of the conveyor belt 2 away from the weighing device 3, one end of the rotating shaft of the conveyor belt 2 is located on the outer wall of the workbench 1 and is fixedly connected to a motor 5, a transmission belt 11 is connected between the rotating shaft of the rotating sleeve 6 and the rotating shaft of the conveyor belt 2, a slag discharge trough 10 is opened at the lower end of the side of the workbench 1 away from the weighing device 3, and further comprising: The blocking bar 12 is used to allow steel pipes of different diameters to be fed separately. The blocking bar 12 is inserted up and down on the lower surface of the workbench 1, and the blocking bar 12 is located at the lower side of the rotating sleeve 6. An air pump 9 is fixedly connected between the upper surface of the bottom end of the blocking bar 12 and the bottom end of the workbench 1; An automatic grinding mechanism 7 is used to automatically clamp the recovered steel pipes of different diameters, and the automatic grinding mechanism 7 is arranged on the rotating sleeve 6; And an automatic sorting mechanism 8 is used for grinding the steel pipes and automatically sorting the steel pipes. The automatic sorting mechanism 8 is arranged in the automatic grinding mechanism 7.

[0019] There are a plurality of ring plates 71 on the rotating sleeve 6 , and the ring plates 71 are arranged in a ring shape with equal intervals.

[0020] Specifically, the steel pipe will squeeze the insert block 713 inward, so that the slider 716 can squeeze the extrusion bevel ring 718 toward the grinding sleeve 75, so that the slide 719 can approach the inner wall of the steel pipe, and then each support block 721 will abut against the inner wall of the steel pipe, thereby fixing the steel pipes of various outer diameters, and the grinding sleeve 75 starts to rotate, and the bottom end of the grinding strip 84 starts to grind and remove rust from the outer wall of the steel pipe. Through the automatic grinding mechanism 7, the steel pipe can be automatically fixed and ground, thereby improving work efficiency; The unpolished grinding strip 84 on the upper side rotates downward, which allows the polished grinding strip 84 on the lower side to have time to cool down, preventing continuous polishing from affecting the grinding strip 84, and when the lower grinding strip 84 rotates to the inner cavity of the grinding sleeve 75, the impurities on the grinding strip 84 can also be scraped off by the bottom end of the grinding sleeve 75. When the upper grinding strip 84 rotates downward, due to the elastic force of the spring 5 89, the grinding strip 84 will be quickly ejected outward and knock on the outer wall of the steel pipe to shake off the impurities adhering to the outer wall of the steel pipe. At this time, the corresponding steel pipe rotates to the slag discharge groove 10, and the impurities will be shaken out. The counterweight block 810 is provided so that when the upper grinding strip 84 rotates, due to the centrifugal force, the grinding strip 84 will be ejected from the grinding sleeve 75 with greater force, further increasing the knocking and cleaning effect. The steel pipe will squeeze the grinding strip 84 and the lifting frame 85 upward, so that the lifting frame 85 stops at a certain position, and the lifting frame 85 squeezes a certain trigger rod 811. When the rotating sleeve 6 continues to rotate, the other end of a certain trigger rod 811 will squeeze the corresponding rebound button three 813, so that the air pump 9 is started, thereby moving the corresponding blocking strip 12 downward, and the slots where the blocking strips 12 are located are larger than the outer diameter of the steel pipe. This ensures that when the outer diameter of the steel pipe is uncertain, it will not get stuck during screening, so that steel pipes with outer diameters in the same range can be discharged and classified through the slots where the corresponding blocking strips 12 are located.

[0021] In another embodiment provided by the present invention, the automatic grinding mechanism 7 includes a ring plate 71 fixedly connected to the rotating sleeve 6, a grinding sleeve 75 is provided on the upper side of the ring plate 71 and located in the rotating sleeve 6, a fixing block 76 is fixedly connected to the inner wall of one side of the rotating sleeve 6, two trapezoidal blocks 77 are provided on the outer side of the fixing block 76, and one end of the trapezoidal block 77 is close to the grinding sleeve 75, and a rotating column 723 is provided on the outer side of the other end of the trapezoidal block 77, and the rotating column 723 is rotatably arranged in the rotating sleeve 6, and the end of the rotating column 723 away from the grinding sleeve 75 is fixedly connected to the motor 2 72, A spring three 724 is fixedly connected between the trapezoidal block 77 and the rotating column 723, a sleeve 725 is fixedly connected to one end of the trapezoidal block 77 close to the grinding sleeve 75, and the sleeve 725 is movably inserted in the trapezoidal block 77, a limiting groove 726 is provided in the trapezoidal block 77, an inclined block 727 is inserted in the limiting groove 726, and the inclined block 727 is movably inserted in the sleeve 725, a spring four 728 is fixedly connected between one end of the inclined block 727 and the sleeve 725, and a threaded block 79 is slidably provided on the side wall of the rotating sleeve 6 opposite to the fixed block 76.

[0022] Specifically, during rotation, the two trapezoidal blocks 77 can be alternately separated from the grinding sleeve 75 to ensure that the fixed block 76 can play a role in resisting one end of the steel pipe, while also not hindering the rotation of the grinding sleeve 75 driven by the rotating column 723.

[0023] In another embodiment provided by the present invention, a threaded rod is connected to the inner thread of the threaded block 79, and a lever 710 is fixedly connected to one end of the threaded rod extending outside the rotating sleeve 6, a torsion spring 711 is fixedly connected between the outer wall of the threaded rod and the rotating sleeve 6, an insert block 713 is movably inserted on the upper side of one end of the threaded block 79 close to the grinding sleeve 75, a pressure rod 714 is fixedly connected to the end of the insert block 713 away from the grinding sleeve 75, the other end of the pressure rod 714 is in contact with a rotating rod 715, and the rotating rod 715 is rotatably set in the threaded block 79, a torsion spring 729 is fixedly connected between one end of the rotating shaft of the rotating rod 715 and the threaded block 79, an insert rod 717 is movably inserted at the bottom end of the rotating rod 715, and the bottom end of the insert rod 717 is rotatably set There is a slider 716, and the slider 716 is slidably set in the threaded block 79. An extrusion bevel ring 718 is fixedly connected to one end of the threaded block 79 close to the grinding sleeve 75, and the extrusion bevel ring 718 is slidably set in the threaded block 79. The other end of the extrusion bevel ring 718 abuts against a plurality of slides 719 arranged in a ring shape with equal intervals, and the slide 719 is slidably set up and down in the threaded block 79. A spring 1 720 is fixedly connected between the upper end of the slide 719 and the threaded block 79. One end of the slide 719 away from the extrusion bevel ring 718 extends to the outside of the threaded block 79. A support block 721 is movably inserted at the upper end of the slide 719, and a spring 2 722 is fixedly connected between the bottom end of the support block 721 and the slide 719.

[0024] Specifically, the steel pipe will squeeze the insert block 713 inward, so that the slider 716 can squeeze the extrusion bevel ring 718 toward the grinding sleeve 75, so that the slide 719 can approach the inner wall of the steel pipe, and then each support block 721 will abut against the inner wall of the steel pipe, thereby fixing the steel pipes of various outer diameters, and the grinding sleeve 75 starts to rotate, and the bottom end of the grinding strip 84 starts to grind and remove rust from the outer wall of the steel pipe.

[0025] In another embodiment provided by the present invention, the automatic sorting mechanism 8 includes a rotating shaft 81 arranged in the grinding sleeve 75, and the end of the rotating shaft 81 away from the threaded block 79 is fixedly connected to the motor 3 78, and the motor 3 78 is fixedly connected to the outer wall of the grinding sleeve 75, and the middle outer wall of the rotating shaft 81 is fixedly connected to a rotating plate 88, and the rotating plate 88 is rotatably arranged on the inner wall of the grinding sleeve 75, and the opposite sides of the outer wall of the rotating shaft 81 are fixedly connected to a fixed sleeve 83, and the end of the fixed sleeve 83 away from the rotating shaft 81 is movably inserted with a grinding strip 84, and a spring 5 89 is fixedly connected between one end of the grinding strip 84 and the fixed sleeve 83, and a counterweight block is fixedly connected to the grinding strip 84 810, a lifting frame 85 is fixedly connected to the grinding strip 84, and the upper end of the lifting frame 85 is slidably arranged in the rotating shaft 81, and the upper part of one end of the lifting frame 85 located in the rotating shaft 81 extends to the outside of the rotating shaft 81, and the end of the lifting frame 85 extending to the outside of the rotating shaft 81 is staggered with the threaded block 79, and a trigger rod 811 is provided above the lifting frame 85 located on the lower side, and the trigger rod 811 is movably inserted in the rotating sleeve 6, and a spring six 812 is fixedly connected between one end of the outer wall of the trigger rod 811 and the rotating sleeve 6, and the other end of the spring six 812 extends to the outside of the rotating sleeve 6, and a plurality of rebound buttons three 813 are provided on the inner wall of the lower side of the rotating sleeve 6.

[0026] The outer wall of one side of the rotating sleeve 6 is located on the side of the motor 2 72 and is provided with a rebound button 1 73. The inner wall of the workbench 1 is fixedly connected with an extrusion strip 1 74. The extrusion strip 1 74 is located on the upper part of the side of the workbench 1 away from the weighing device 3. The inner wall of the other side of the workbench 1 is fixedly connected with an extrusion strip 2 712 and an extrusion strip 3 87. The end of the grinding sleeve 75 close to the threaded block 79 is provided with a rebound button 2 82, and one end of the rebound button 2 82 is abutted against a sliding rod 86. The sliding rod 86 is movably inserted in the rotating sleeve 6, and the other end of the sliding rod 86 extends to the outside of the rotating sleeve 6. The rebound button 2 82 and the rebound button 1 73 respectively control the motor 3 78 and the motor 2 72, and each rebound button 3 813 respectively controls each air pump 9.

[0027] Specifically, the unpolished grinding strip 84 on the upper side rotates downward, which allows the polished grinding strip 84 on the lower side to have time to cool down, preventing continuous polishing from affecting the grinding strip 84, and when the lower grinding strip 84 rotates to the inner cavity of the grinding sleeve 75, the impurities on the grinding strip 84 can also be scraped off by the bottom end of the grinding sleeve 75. When the upper grinding strip 84 rotates downward, due to the elastic force of the spring 5 89, the grinding strip 84 will be quickly ejected outward and knock on the outer wall of the steel pipe to shake off the impurities adhering to the outer wall of the steel pipe. At this time, the corresponding steel pipe rotates to the slag discharge groove 10, and the impurities will be shaken out. The counterweight block 810 is provided so that when the upper grinding strip 84 rotates, due to the centrifugal force, the grinding strip 84 will be ejected from the grinding sleeve 75 with greater force, further increasing the knocking and cleaning effect. The steel pipe will squeeze the grinding strip 84 and the lifting frame 85 upward, so that the lifting frame 85 stops at a certain position, and the lifting frame 85 squeezes a certain trigger rod 811. When the rotating sleeve 6 continues to rotate, the other end of a certain trigger rod 811 will squeeze the corresponding rebound button three 813, so that the air pump 9 is started, thereby moving the corresponding blocking strip 12 downward, and the slots where the blocking strips 12 are located are larger than the outer diameter of the steel pipe. This ensures that when the outer diameter of the steel pipe is uncertain, it will not get stuck during screening, so that steel pipes with outer diameters in the same range can be discharged and classified through the slots where the corresponding blocking strips 12 are located.

[0028] In another embodiment provided by the present invention, the blocking bars 12 are distributed at equal intervals, and the upper ends of the blocking bars 12 and the inner wall of the bottom end of the rotating sleeve 6 are both provided with inclined surfaces, and the top ends of the blocking bars 12 are flush with the inner wall of the rotating sleeve 6.

[0029] The slots where each blocking strip 12 is located are larger than the outer diameter of the steel pipe, and the second spring 722 is a hard spring.

[0030] Specifically, an inclined surface is provided to facilitate the steel pipe to roll down into the groove where the corresponding blocking strip 12 is located. The second spring 722 is a hard spring, which can fix steel pipes with different inner diameters and prevent the steel pipe from moving during grinding.

[0031] Working principle: When in use, the recycled steel pipes are first screened by the length screening machine, so that the steel pipes of the same length are placed on the sorting platform 4 for weighing. If the steel pipe is too heavy, it means that there are too many foreign objects adsorbed on the steel pipe, so that this part of the steel pipe is removed from the sorting platform 4. If the weight of the steel pipe is reasonable, this part of the steel pipe is placed from the sorting platform 4 to the conveyor belt 2 for transportation. The steel pipe is transported to the rotating sleeve 6, and the rotating sleeve 6 and the conveyor belt 2 are driven by the transmission belt 11 to rotate in the same direction. When the steel pipe on the conveyor belt 2 falls, it will roll onto the ring plate 71, and then the rotating sleeve 6 continues to rotate clockwise, and the steel pipe on the ring plate 71 rolls to The polishing sleeve 75 is directly below the lever 710, and then the lever 710 is squeezed by the second squeeze bar 712, so that the lever 710 rotates, so that the threaded rod can move the threaded block 79 toward the polishing sleeve 75. When the threaded block 79 moves, the two ends of the steel pipe will be squeezed by the threaded block 79 and the fixed block 76 respectively, and the steel pipe will squeeze the plug block 713 inward, so that the slider 716 can squeeze the extrusion bevel ring 718 toward the polishing sleeve 75, so that the slide 719 can approach the inner wall of the steel pipe, and then each support block 721 will abut against the inner wall of the steel pipe, thereby fixing the steel pipes of various outer diameters, so that the steel pipes are separated from the ring plate 71; After that, the rebound button 1 73 will be pressed inward by the extrusion bar 1 74, so that the motor 2 72 is started, the grinding sleeve 75 starts to rotate, and the bottom end of the grinding strip 84 starts to grind and remove rust from the outer wall of the steel pipe. After the grinding is completed, the grinding sleeve 75 still stops at the initial position. Then, when the rotating sleeve 6 rotates, the sliding bar 86 is squeezed inward by the extrusion bar 3 87, so that the sliding bar 86 squeezes the rebound button 2 82. Then, the motor 3 78 is started, so that the rotating shaft 81 rotates 180 degrees, so that the grinding strip 84 on the lower side that has been grinded is rotated to the inner cavity of the grinding sleeve 75, and the grinding strip 84 on the upper side that has not been grinded is rotated to the bottom, which allows the grinding strip 84 on the lower side to have time to cool down after being grinded, thereby preventing continuous The grinding affects the grinding strip 84, and when the lower grinding strip 84 rotates to the inner cavity of the grinding sleeve 75, the impurities on the grinding strip 84 can also be scraped off by the bottom end of the grinding sleeve 75. When the upper grinding strip 84 rotates to the bottom, due to the elastic force of the spring 5 89, the grinding strip 84 will be quickly ejected outward and knock on the outer wall of the steel pipe to shake off the impurities adhering to the outer wall of the steel pipe. At this time, the corresponding steel pipe rotates to the slag discharge groove 10, and the impurities will be shaken out. The counterweight block 810 is provided so that when the upper grinding strip 84 rotates, due to the centrifugal force, the grinding strip 84 will be ejected from the grinding sleeve 75 with greater force, further increasing the knocking and cleaning effect. When the upper grinding strip 84 moves to the lower side, the bottom end of the grinding strip 84 can be tightly attached to the outer wall of the steel pipe, and the steel pipe will squeeze the grinding strip 84 and the lifting frame 85 upward, so that the lifting frame 85 stops at a certain position, so that the lifting frame 85 squeezes a certain trigger rod 811. When the rotating sleeve 6 continues to rotate, the other end of a certain trigger rod 811 will squeeze the corresponding rebound button three 813, so that the air pump 9 is started, thereby moving the corresponding blocking strip 12 downward. At this time, the lever 710 also disengages from the squeezing strip two 712, so that the steel pipe is no longer clamped, and the steel pipe can be discharged from the corresponding notch below. The notches where the blocking strip 12 is located are larger than the outer diameter of the steel pipe. This ensures that when the outer diameter of the steel pipe is uncertain, it will not get stuck during screening, so that steel pipes with outer diameters in the same range can be discharged and classified through the notches where the corresponding blocking strips 12 are located.

[0032] It should be noted that the thickness of the upper end of the lifting frame 85 is slightly larger than the spacing between adjacent trigger rods 811. This means that if the outer diameter of the steel pipe is at a critical value, two adjacent trigger rods 811 will be squeezed and two adjacent blocking bars 12 will be able to move downward. Since the outer diameter of the steel pipe is at a critical value, the steel pipe can fall into the grooves where the two blocking bars 12 are located.

[0033] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A construction material unloading device with a weighing scale, comprising a workbench (1) and a conveyor belt (2) arranged in the workbench (1), a weighing device (3) being arranged on one side of the conveyor belt (2), and a sorting platform (4) being fixedly connected to the weighing device (3), a rotating sleeve (6) being rotatably arranged on the side of the conveyor belt (2) away from the weighing device (3), one end of the rotating shaft of the conveyor belt (2) being located on the outer wall of the workbench (1) and fixedly connected to a motor (5), a transmission belt (11) being connected between the rotating shaft of the rotating sleeve (6) and the rotating shaft of the conveyor belt (2), a slag discharge trough (10) being provided at the lower end of the side of the workbench (1) away from the weighing device (3), characterized in that: Also includes: A blocking bar (12) is used to allow steel pipes of different diameters to be fed separately. The blocking bar (12) is inserted up and down on the lower surface of the workbench (1), and the blocking bar (12) is located on the lower side of the rotating sleeve (6). An air pump (9) is fixedly connected between the upper surface of the bottom end of the blocking bar (12) and the bottom end of the workbench (1); An automatic grinding mechanism (7) is used to automatically clamp the recovered steel pipes of different diameters, and the automatic grinding mechanism (7) is arranged on the rotating sleeve (6); and an automatic sorting mechanism (8) for grinding the steel pipes and automatically sorting the steel pipes, wherein the automatic sorting mechanism (8) is arranged in the automatic grinding mechanism (7).

2. A construction material unloading device with a weighing scale according to claim 1, characterized in that: The automatic grinding mechanism (7) comprises a ring plate (71) fixedly connected to the rotating sleeve (6); a grinding sleeve (75) is provided on the upper side of the ring plate (71) and is located in the rotating sleeve (6); a fixing block (76) is fixedly connected to the inner wall of one side of the rotating sleeve (6); a trapezoidal block (77) is provided on the outer side of the fixing block (76); one end of the trapezoidal block (77) is in close contact with the grinding sleeve (75); a rotating column (723) is provided on the outer side of the other end of the trapezoidal block (77); the rotating column (723) is rotatably arranged in the rotating sleeve (6); a motor 2 (72) is fixedly connected to one end of the rotating column (723) away from the grinding sleeve (75); the trapezoidal block (77) A spring three (724) is fixedly connected to the rotating column (723); an insert sleeve (725) is fixedly connected to one end of the trapezoidal block (77) close to the grinding sleeve (75), and the insert sleeve (725) is movably inserted in the trapezoidal block (77); a limiting groove (726) is provided in the trapezoidal block (77), an inclined block (727) is inserted in the limiting groove (726), and the inclined block (727) is movably inserted in the insert sleeve (725); a spring four (728) is fixedly connected between one end of the inclined block (727) and the insert sleeve (725); and a threaded block (79) is slidably provided on a side wall of the rotating sleeve (6) opposite to the fixed block (76).

3. The construction material unloading device with a weighing scale according to claim 2 is characterized in that: The threaded block (79) is internally threadedly connected to a threaded rod, and one end of the threaded rod extending outside the rotating sleeve (6) is fixedly connected to a lever (710), a torsion spring (711) is fixedly connected between the outer wall of the threaded rod and the rotating sleeve (6), an insert block (713) is movably inserted on the upper side of one end of the threaded block (79) close to the grinding sleeve (75), a pressure rod (714) is fixedly connected to one end of the insert block (713) away from the grinding sleeve (75), the other end of the pressure rod (714) abuts against a rotating rod (715), and the rotating rod (715) is rotatably arranged in the threaded block (79), a torsion spring (729) is fixedly connected between one end of the rotating shaft of the rotating rod (715) and the threaded block (79), an insert rod (717) is movably inserted at the bottom end of the rotating rod (715), and a slider (717) is rotatably arranged at the bottom end of the insert rod (717) 6), and the slider (716) is slidably arranged in the threaded block (79), one end of the threaded block (79) close to the grinding sleeve (75) is fixedly connected with an extrusion bevel ring (718), and the extrusion bevel ring (718) is slidably arranged in the threaded block (79), the other end of the extrusion bevel ring (718) abuts against a plurality of slides (719) arranged in an annular shape and at equal intervals, and the slide (719) is slidably arranged in the threaded block (79) up and down, a spring 1 (720) is fixedly connected between the upper end of the slide (719) and the threaded block (79), one end of the slide (719) away from the extrusion bevel ring (718) extends to the outside of the threaded block (79), a support block (721) is movably inserted at the upper end of the slide (719), and a spring 2 (722) is fixedly connected between the bottom end of the support block (721) and the slide (719).

4. The construction material unloading device with a weighing scale according to claim 2 is characterized in that: The automatic sorting mechanism (8) comprises a rotating shaft (81) arranged in a grinding sleeve (75), one end of the rotating shaft (81) away from the threaded block (79) is fixedly connected to a motor three (78), and the motor three (78) is fixedly connected to the outer wall of the grinding sleeve (75), a rotating plate (88) is fixedly connected to the outer wall of the middle part of the rotating shaft (81), and the rotating plate (88) is rotatably arranged on the inner wall of the grinding sleeve (75), and the opposite sides of the outer wall of the rotating shaft (81) are fixedly connected to fixed sleeves (83), and a grinding strip (84) is movably inserted at one end of the fixed sleeve (83) away from the rotating shaft (81), and a spring five (89) is fixedly connected between one end of the grinding strip (84) and the fixed sleeve (83), and a counterweight block (810) is fixedly connected to the grinding strip (84). A lifting frame (85) is fixedly connected to the grinding strip (84), and the upper end of the lifting frame (85) is slidably arranged in the rotating shaft (81). The upper part of one end of the lifting frame (85) located in the rotating shaft (81) extends outside the rotating shaft (81), and the end of the lifting frame (85) extending outside the rotating shaft (81) is staggered with the threaded block (79). A trigger rod (811) is provided above the lifting frame (85) located on the lower side, and the trigger rod (811) is movably inserted in the rotating sleeve (6). A spring six (812) is fixedly connected between one end of the outer wall of the trigger rod (811) and the rotating sleeve (6), and the other end of the spring six (812) extends outside the rotating sleeve (6). A plurality of rebound buttons three (813) are provided on the inner wall of the lower side of the rotating sleeve (6).

5. The construction material unloading device with a weighing scale according to claim 1, characterized in that: The blocking strips (12) are distributed at equal intervals, and the upper ends of the blocking strips (12) and the inner wall of the bottom end of the rotating sleeve (6) are both provided with inclined surfaces, and the top ends of the blocking strips (12) are flush with the inner wall of the rotating sleeve (6).

6. The construction material unloading device with a weighing scale according to claim 1, characterized in that: A plurality of ring plates (71) are provided on the rotating sleeve (6), and the plurality of ring plates (71) are arranged in a ring shape at equal intervals.

7. The construction material unloading device with a weighing scale according to claim 4, characterized in that: The outer wall of one side of the rotating sleeve (6) is located on the side of the second motor (72) and is provided with a rebound button (73); the inner wall of the workbench (1) is fixedly connected with an extrusion strip (74), and the extrusion strip (74) is located on the upper part of the side of the workbench (1) away from the weighing device (3); the inner wall of the other side of the workbench (1) is fixedly connected with an extrusion strip (712) and an extrusion strip (87); the end of the grinding sleeve (75) close to the threaded block (79) is provided with a rebound button (82), and one end of the rebound button (82) is in contact with a sliding rod (86), and the sliding rod (86) is movably inserted in the rotating sleeve (6), and the other end of the sliding rod (86) extends outside the rotating sleeve (6); the rebound button (82) and the rebound button (73) respectively control the third motor (78) and the second motor (72), and each of the rebound buttons (813) respectively controls each air pump (9).

8. The construction material unloading device with a weighing scale according to claim 3 is characterized by: The slots where the blocking strips (12) are located are larger than the outer diameter of the steel pipe, and the second spring (722) is a hard spring.

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