Aggregate feeding and batching system of concrete mixing plant

Abstract

The invention relates to the technical field of concrete mixing plants, and discloses a concrete mixing plant aggregate feeding and batching system which comprises a feeding unit, a storage bin, a batching unit and a mixing tank. The multiple storage bins are arranged in the linear direction. The feeding unit is used for supplementing materials to the storage bin; the batching unit is arranged between the storage bin and the stirring tank and is used for conveying aggregate discharged from the storage bin into the stirring tank; the feeding unit comprises a discharging pit which is sunken downwards relative to the ground; the discharging hopper is located in the discharging pit, a feeding port is formed in the upper portion, and a discharging port is formed in the bottom; the lifting device extends from the blanking pit to the storage bin on the edge and is used for conveying the aggregate from the discharge hole to the top of the storage bin; and the material distributing device is used for receiving the aggregate conveyed by the lifting device and distributing the aggregate into the corresponding material storage bins. The condition of aggregate overflow can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of concrete mixing plants, and particularly to an aggregate feeding and batching system for a concrete mixing plant. Background Art

[0002] A concrete mixing plant is used for mixing concrete raw materials, and usually has a mixing tank and multiple bins. Different bins store different aggregates, such as crushed stones, gravel, etc. The bins convey the raw materials to the mixing tank through conveyor belts for mixing.

[0003] For example, the Chinese patent document with the publication number CN202572645U discloses a batching device for a concrete mixing plant, which includes a bin, a feeding belt conveyor and an inclined belt conveyor. The bin discharges the aggregate onto the feeding belt conveyor, and then the feeding belt conveyor carrying various aggregates transports the aggregate to the inclined belt conveyor for transportation.

[0004] Currently, considering that the inlet position at the top of the bin is relatively high, in order to replenish the bin, a ramp is usually set beside the bin. During replenishment, the feeding truck drives onto the ramp and aligns the dumping outlet of the feeding truck with the opening at the top of the bin. However, the above method of replenishing the bin has high requirements for the accuracy of the position of the feeding truck, and it is easy to cause a deviation between the dumping outlet of the feeding truck and the opening of the bin due to the lack of driving skills, resulting in aggregate spillage. Summary of the Invention

[0005] In order to reduce the situation of aggregate spillage, this application provides an aggregate feeding and batching system for a concrete mixing plant.

[0006] This application provides an aggregate feeding and batching system for a concrete mixing plant, adopting the following technical solutions: An aggregate feeding and batching system for a concrete mixing plant includes a feeding unit, a storage bin, a batching unit and a mixing tank; a plurality of storage bins are arranged in a straight line; the feeding unit is used to replenish the storage bins; the batching unit is arranged between the storage bins and the mixing tank and is used to convey the aggregate discharged from the storage bins to the mixing tank; the feeding unit includes, a feeding pit, which is recessed downward relative to the ground; a discharging hopper, which is located in the feeding pit, has a feeding port at the upper part and a discharging port at the bottom; a lifting device, which extends from the feeding pit to the storage bin at the edge and is used to convey the aggregate from the discharging port to the top of the storage bin; a distributing device, which is used to receive the aggregate conveyed by the lifting device and distribute the aggregate to the corresponding storage bins.

[0007] By adopting the above technical solution, the vehicle can drive to the blanking pit on the flat ground through the blanking pit, that is, unloading can be carried out. After the aggregate is unloaded into the unloading hopper, it is successively conveyed into the corresponding storage bin through the lifting device and the distributing device, thereby improving the convenience of the feeder vehicle unloading and the requirement for the position accuracy of the feeder vehicle, reducing the risk of aggregate overflow, and improving the safety of feeding.

[0008] Optionally, the distributing device includes a support frame, a first conveying mechanism and a second conveying mechanism; the support frame is opposite to the storage bin, multiple groups of the first conveying mechanism and the second conveying mechanism are alternately arranged along the distribution direction of the storage bin, and both the first conveying mechanism and the second conveying mechanism are located above the storage bin, and the number of groups of the second conveying mechanism is the same as the number of groups of the storage bin; Each group of the first conveying mechanism includes conveying rollers and a first conveyor belt; two conveying rollers are arranged horizontally and are both rotatably connected to the support frame; the first conveyor belt is conveyed on the conveying rollers along the distribution direction of the storage bin; Each group of the second conveying mechanism includes a limiting roller, a moving roller, a connecting rod, a second conveyor belt and a driving source; the limiting roller is rotatably connected to the support frame, and the limiting roller is parallel to the conveying roller; the moving roller is located on the side of the limiting roller close to the lifting device, and the moving roller is parallel to the limiting roller, and the two ends of the connecting rod away from each other are respectively rotatably sleeved on the limiting roller and the moving roller; the second conveyor belt is simultaneously sleeved and conveyed on the limiting roller and the moving roller; the driving source is installed on the support frame and is connected to the moving roller for driving the moving roller to swing around the axial direction of the limiting roller; Wherein, all the conveying rollers are located on the same horizontal plane, the limiting roller is located above the adjacent conveying roller, the moving roller is located below the adjacent conveying roller, and the moving roller is opposite to the top of the storage bin.

[0009] By adopting the above technical solution, the rotation of the limiting roller can drive the moving roller to swing around the limiting roller, so as to adjust the distance between the first conveyor belt and the second conveyor belt, so that a space for the aggregate to fall into the storage bin can be formed between the first conveyor belt and the second conveyor belt, and by adjusting the conveying direction of the second conveyor belt, the aggregate can be guided. Specifically, adjusting the conveying direction of the second conveyor belt above the storage bin that needs to be fed to be opposite to the conveying direction of the aggregate on the first conveyor belt can convey the aggregate falling on the second conveyor belt into the storage bin.

[0010] Optionally, the limiting roller includes an inner shaft one and a sleeve rod one, the inner shaft one is rotatably connected to the support frame, and the sleeve rod one is coaxially and rotatably sleeved on the outer wall of the inner shaft one; The moving roller includes an inner shaft II and a sleeve rod II, and the sleeve rod II is rotatably sleeved on the outer wall of the inner shaft II; the second conveyor belt is simultaneously sleeved and transmitted on the sleeve rod I and the sleeve rod II; The driving source has a base end and a telescopic end, the telescopic end can telescopically move relative to the base section, and the base end is hinged to the support frame, and the telescopic end is connected to the inner shaft II.

[0011] By adopting the above technical solution, the telescopic movement of the driving source can drive the moving roller to swing circumferentially around the axis of the limiting roller, so as to adjust the position of the second conveyor belt.

[0012] Optionally, the second conveying mechanism further includes a rotating source, the rotating source is connected to the telescopic end or the inner shaft II, and the rotating source controls the rotation of the sleeve rod II through a linkage member.

[0013] By adopting the above technical solution, the rotation of the sleeve rod II is controlled by the linkage member to drive the second conveyor belt to convey.

[0014] Optionally, a synchronizing member is arranged between the sleeve rod I and the adjacent conveying roller, so that the sleeve rod I and the adjacent conveying roller rotate synchronously.

[0015] By adopting the above technical solution, the synchronizing member enables the sleeve rod I and the adjacent conveying roller to rotate synchronously, so as to improve the continuity and stability of the aggregate during the conveying process.

[0016] Optionally, the second conveyor belt is a skirt baffle type belt.

[0017] By adopting the above technical solution, the skirt baffle type belt is used as the second conveyor belt, which has better load-bearing capacity and anti-leakage performance, so that the aggregate is not easy to overflow or spill during the conveying process, and the safety and cleanliness of the device are improved.

[0018] Optionally, the lifting device includes a first elevator and a second elevator; the first elevator is installed in the blanking pit, the second elevator is installed on the ground, and the feeding end of the first elevator is opposite to the discharge port, the discharging end of the first elevator is opposite to the feeding end of the second elevator, and the discharging end of the second elevator is opposite to the distributing device.

[0019] Optionally, a cover plate is hinged to the feeding port of the discharging hopper.

[0020] By adopting the above technical solution, a cover plate is hinged at the feeding port of the discharging hopper, and the feeding port of the discharging hopper can be closed when the discharging hopper is idle, so as to improve the installation property.

[0021] Optionally, a plurality of guide plates are alternately distributed on the inner side walls of the two opposite sides of the discharge hopper along the direction close to the discharge port, and the guide plates extend obliquely downward along the direction away from the inner side wall of the connected discharge hopper.

[0022] By adopting the above technical solution, the alternately distributed guide plates can guide the movement of the aggregate in the discharge hopper, extend the movement path of the aggregate, and reduce the impact force when the aggregate falls to the discharge port.

[0023] Optionally, one end of the guide plate connected to the inner wall of the discharge hopper is connected by a hinge, and an extension shaft is connected to the end of the guide plate far from its hinge end; there is a travel groove on the wall of the discharge hopper for the extension shaft to move, the travel groove is in an arc shape coaxial with the hinge end of the guide plate, and an elastic member for supporting the extension shaft is arranged in the travel groove of the discharge hopper.

[0024] By adopting the above technical solution, the elastic member supports the guide plate so as to cause the vibration of the guide plate when the aggregate moves on the guide plate, thereby improving the smoothness of the aggregate moving on the guide plate.

[0025] In summary, the present application includes at least one of the following beneficial effects: 1. Through the arrangement of the blanking pit, the feeding vehicle can drive on the ground to the blanking pit for discharging, so as to improve the convenience of discharging of the feeding vehicle and reduce the influence of the driving skills of the driver on the feeding accuracy of the storage bin. 2. During the alternating transmission of the aggregate between the first conveyor belt and the second conveyor belt, through the height difference between the first conveyor belt and the second conveyor belt, the aggregate falls multiple times, and part of the agglomeration in the aggregate can be shaken and broken, improving the quality of the aggregate stored in the storage bin. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of an embodiment of the present application; Figure 2 is a schematic structural diagram of the cooperation between the support frame and the storage bin in the embodiment of the present application; Figure 3 is a schematic structural diagram of the cooperation between the discharge hopper and the second elevator in the embodiment of the present application; Figure 4 is a perspective view of the storage bin in the embodiment of the present application; Figure 5 is a schematic structural diagram of the cooperation between the material distribution device and the storage bin in the embodiment of the present application; Figure 6 is a schematic structural diagram of the cooperation between the material distribution device and the support frame in the embodiment of the present application; Figure 7 is a perspective view of the first transmission mechanism and the second transmission mechanism in the embodiment of the present application; Figure 8 It is a schematic structural diagram of the first conveying mechanism and the second conveying mechanism in the embodiment of the present application.

[0027] Explanation of reference numerals: 1. Storage bin; 2. Stirring tank; 3. Feeding pit; 4. Discharge hopper; 5. Inlet; 6. Outlet; 7. Lifting device; 71. First elevator; 72. Second elevator; 8. Material distribution device; 81. Support frame; 82. First conveying mechanism; 821. Conveyor roller; 822. First conveyor belt; 83. Second conveying mechanism; 831. Limiting roller; 8311. Inner shaft one; 8312. Sleeve rod one; 832. Moving roller; 8321. Inner shaft two; 8322. Sleeve rod two; 833. Connecting rod; 834. Second conveyor belt; 835. Driving source; 84. Rotating source; 85. Linkage member; 851. First gear; 852. Second gear; 9. Synchronizing member; 91. First sprocket; 92. Second sprocket; 93. Chain; 10. Cover plate; 11. Guide plate; 12. Extension shaft; 13. Stroke groove; 14. Elastic member; 15. Loading port; 16. Opening and closing cover; 17. Enclosure; 18. Initial end; 19. End end; 20. Driving motor; 21. Batching conveyor; 22. Third elevator. Detailed implementation manners

[0028] The following will further describe the present application in detail with reference to the Figure 1-8 accompanying drawings.

[0029] An aggregate feeding and batching system for a concrete mixing plant is disclosed in the embodiment of the present application. Referring to Figure 1 , the aggregate feeding and batching system of the concrete mixing plant includes a feeding unit, a storage bin 1, a batching unit, and a stirring tank 2 that are distributed in sequence. The feeding unit is used to replenish the storage bin 1, and the batching unit is used to convey the falling materials of the storage bin 1 into the stirring tank 2.

[0030] Among them, there are multiple storage bins 1. Different storage bins 1 store different types of aggregates respectively. The multiple storage bins 1 are evenly spaced along the same straight line direction, and the storage bin 1 with higher caking tendency of the stored aggregate is closer to the stirring tank 2. The storage bin 1 has a loading port 15 for the aggregate to enter at the top, and an opening and closing cover 16 for opening and closing the loading port 15 is horizontally moved at the loading port 15 of the storage bin 1 through a multi-stage electric telescopic rod.

[0031] Referring to Figure 1 and Figure 3, the feeding unit includes a blanking pit 3, a discharging hopper 4, a lifting device 7 and a material distributing device 8. Among them, the blanking pit 3 is excavated on the ground, the discharging hopper 4 is supported in the blanking pit 3, the discharging hopper 4 has a feeding port 5 at the top and a discharging port 6 at the bottom, and the top of the discharging hopper 4 is close to the ground. The lifting device 7 is located between the discharging hopper 4 and the storage bin 1 near the blanking pit 3 for conveying the blanking at the discharging hopper 4 to the material distributing device 8. The material distributing device 8 receives the aggregate conveyed by the lifting device 7 and distributes the aggregate to the corresponding blanking devices according to the type of the aggregate. When the feeding truck discharges materials, it drives to the side of the blanking pit 3 and turns the dumping outlet towards the feeding port 5 of the discharging hopper 4, so that the aggregate can be dumped into the discharging hopper 4.

[0032] Specifically, the blanking pit 3 is square, and enclosing plates 17 are arranged around the top of the blanking pit 3 to limit vehicles from driving into the blanking pit 3. The upper part of the discharging hopper 4 is square and the lower part is in the shape of a hopper with a gradually decreasing diameter, and the discharging hopper 4 is located on one side of the blanking pit 3. Three adjacent sides of the upper part of the discharging hopper 4 are attached to the inner wall of the blanking pit 3, and vehicles can approach the discharging hopper 4 from three directions. In addition, the extending width of each side of the discharging hopper 4 is greater than the width of the dumping outlet of the discharging truck.

[0033] Refer to Figure 3 and Figure 4 , further, a plurality of guide plates 11 are hinged to the inner walls of the two opposite sides of the discharging hopper 4 through pin shafts. The guide plates 11 on both sides of the discharging hopper 4 are alternately distributed vertically. There is a space for the aggregate to pass between the upper and lower adjacent guide plates 11, and the vertical projections of the upper and lower adjacent guide plates 11 have overlapping parts. A extending shaft 12 is fixedly penetrated through the end of the guide plate 11 far from its hinged end. The axis of the extending shaft 12 is parallel to the axis of the pin shaft, and the end of the extending shaft 12 extends out of the side of the guide plate 11. A travel groove 13 for the extending shaft 12 to abut and slide into is opened on the inner wall of the discharging hopper 4. The travel groove 13 is in an arc shape coaxial with the pin shaft of the guide plate 11, and the rotation angle of the guide plate 11 is limited by the cooperation of the travel groove 13 and the extending shaft 12.

[0034] When the extending shaft 12 moves in the travel groove 13, the end of the guide plate 11 far from its hinged end is always lower than the hinged end of the guide plate 11, so that the plate surface of the guide plate 11 is always inclined downward in the direction away from the hinged end. An elastic member 14 is installed in the travel groove 13 of the discharging hopper 4. The elastic member 14 is a spring. The spring is located below the extending shaft 12, and the two ends of the spring away from each other are respectively connected to the extending shaft 12 and the discharging hopper 4.

[0035] When there is no aggregate on the material guiding plate 11, the material guiding plate 11 is supported by a spring, causing the extension shaft 12 to move to the upper middle part of the stroke groove 13. When the feeding truck discharges materials into the discharge hopper 4, the material guiding plate 11 is impacted by the aggregate and rotates downward by compressing the spring. The elastic force of the spring will give the material guiding plate 11 a tendency to rotate upward, so that the material guiding plate 11 vibrates to discharge materials. Since the material guiding plates 11 are arranged alternately, the aggregate moves in a meandering path in the discharge hopper 4 towards the discharge port 6, so as to reduce the impact force when the aggregate moves to the discharge port 6, and prevent the aggregate from overly impacting the lifting device 7 and causing damage to the lifting device 7.

[0036] Referring to Figure 1 and Figure 3 Furthermore, on one side of the top of the discharge hopper 4 that does not abut against the inner wall of the blanking pit 3, a cover plate 10 is hinged by a pin shaft, and at the same time, a motor for driving the pin shaft to rotate is connected. The cover plate 10 can open and close the feeding port 5 by flipping.

[0037] Referring to 1 and Figure 3 For the lifting device 7, the lifting device 7 includes a first elevator 71 and a second elevator 72. Both the first elevator 71 and the second elevator 72 are existing skirt baffle type belt elevators (the skirt of the belt is not shown in the figure). The first elevator 71 is fixedly installed in the blanking pit 3, and the second elevator 72 is fixedly installed on the ground and is located between the first elevator 71 and the storage bin 1. The feeding end of the first elevator 71 is directly below the discharge port 6 of the discharge hopper 4. The discharge end of the first elevator 71 extends above the ground, and the feeding end of the second elevator 72 is directly below the first elevator 71. The aggregate is sent from the discharge port 6 to the second elevator 72 through the first elevator 71, and then sent to the material distribution device 8 through the second elevator 72. In addition, a grid-shaped protective plate is installed at the top of the blanking pit 3 opposite to the second elevator 72.

[0038] Referring to Figure 2 and Figure 5 For the material distribution device 8, the material distribution device 8 includes a support frame 81, a first conveying mechanism 82 and a second conveying mechanism 83. The support frame 81 is fixed on the ground and is close to the periphery of the storage bin 1. The support frame 81 gives way to the opening and closing cover 16 in the extending direction of the opening and closing cover 16 of the storage bin 1. One end of the support frame 81 close to the second elevator 72 is the initial end 18, and the end of the support frame away from the second elevator 72 is the end 19. Both the first conveying mechanism 82 and the second conveying mechanism 83 are connected to the frame, and multiple groups of the first conveying mechanism 82 and the second conveying mechanism 83 are arranged alternately along the distribution direction of the storage bin 1. Both the first conveying mechanism 82 and the second conveying mechanism 83 correspond to the storage bin 1 one by one, and the mutually close ends of the first conveying mechanism 82 and the second conveying mechanism 83 distributed in sequence from the initial end 18 towards the direction close to the end 19 are opposite to the feeding port 15 at the top of the storage bin 1.

[0039] Referring to Figure 6 and Figure 7 wherein, each first conveying mechanism 82 includes a conveying roller 821 and a first conveyor belt 822. The number of the conveying rollers 821 is two. The two conveying rollers 821 are parallel to each other and the axial direction is perpendicular to the distribution direction of the storage bin 1. At the same time, the two ends of the conveying rollers 821 away from each other are rotatably connected to the support frame 81. The first conveyor belt 822 is a belt with skirts (the skirts are not shown in the figure). The first conveyor belt 822 is sleeved and conveyed on the two conveying rollers 821 at the same time. In addition, the two conveying rollers 821 are located on the same horizontal plane so that the first conveyor belt 822 is conveyed in the horizontal direction. The feeding end of the first conveyor belt 822 close to the second elevator 72 is directly below the discharging end of the second elevator 72 so that the second elevator 72 can feed the aggregate onto the first conveyor belt 822.

[0040] Each second conveying mechanism 83 includes a limiting roller 831, a moving roller 832, a connecting rod 833, a second conveyor belt 834 and a driving source 835. The limiting roller 831 and the moving roller 832 are parallel to each other and are both parallel to the conveying roller 821. The moving roller 832 is closer to the initial end 18 than the limiting roller 831 so that the moving roller 832 is close to the first conveying mechanism 82 on the side of the second conveying mechanism 83 close to the initial end 18, and the limiting roller 831 is close to the first conveying mechanism 82 on the side of the second conveying mechanism 83 close to the end 19.

[0041] The limiting roller 831 includes an inner shaft one 8311 and a sleeve rod one 8312 coaxially and rotatably sleeved on the outer wall of the inner shaft one 8311. The two ends of the inner shaft one 8311 away from each other extend out of the ends of the sleeve rod one 8312; the moving roller 832 includes an inner shaft two 8321 and a sleeve rod two 8322. The two ends of the inner shaft two 8321 away from each other extend out of the ends of the sleeve rod two 8322. The connecting rod 833 is in a long strip shape, and the two ends of the connecting rod 833 away from each other are respectively rotatably sleeved on the ends of the inner shaft one 8311 and the inner shaft two 8321 to limit the distance between the inner shaft one 8311 and the inner shaft two 8321. The second conveyor belt 834 is a skirt baffle belt (the skirts are not shown in the figure). The second conveyor belt 834 is sleeved and conveyed on the sleeve rod one 8312 and the sleeve rod two 8322 at the same time.

[0042] The two ends of the inner shaft one 8311 away from each other are rotatably connected to the support frame 81. The inner shaft two 8321 can swing in an arc around the axis of the inner shaft one 8311 under the drive of the driving source 835. Specifically, the driving source 835 is an electric telescopic rod, which has a base end and a telescopic end. The base end is hinged to the support frame 81 through a pin shaft, and the hinge axis of the base end is parallel to the axis of the inner shaft two 8321; the telescopic end is fixed to the end of the inner shaft two 8321.

[0043] The moving roller 832 is located below the first conveyor mechanism 82 on the side of the second conveyor mechanism 83 close to the initial end 18, and the moving roller 832 faces the first conveyor belt 822 between the two conveyor rollers 821 of the first conveyor mechanism 82, so that the aggregate can be conveyed from the first conveyor belt 822 to the second conveyor belt 834 along the direction close to the end 19. When the telescopic end of the drive source 835 retracts, the moving roller 832 is at the highest point and above the storage bin 1. When the telescopic end of the drive source 835 extends, it drives the inner shaft two 8321 to move downward, so that the second conveyor belt 834 can swing downward into the storage bin 1.

[0044] Meanwhile, the limiting roller 831 is located above the first conveyor mechanism 82 on the side of the second conveyor mechanism 83 close to the end 19, and the limiting roller 831 faces the first conveyor belt 822 between the two conveyor rollers 821 of the first conveyor mechanism 82, so that the aggregate can be conveyed upward from the second conveyor belt 834 to the next first conveyor belt 822 along the direction close to the end 19.

[0045] Referring to Figure 2 and Figure 7 , therefore, when it is necessary to refill one of the storage bins 1, the second conveyor belt 834 above the storage bin 1 is rotated to extend into the storage bin 1, and this second conveyor belt 834 is set to convey in the opposite direction to the first conveyor belt 822 on the side of the second conveyor belt 834 close to the initial end 18. Thus, when the aggregate is conveyed to the first conveyor belt 822 of the storage bin 1 to be refilled, the aggregate falls from the side of the first conveyor belt 822 close to the end 19 onto the second conveyor belt 834, and the second conveyor belt 834 conveys the aggregate downward into the storage bin 1. Among them, the aggregate passes through the buffer of the second conveyor belt 834 to reduce the impact load on the storage bin 1.

[0046] Referring to Figure 7 and Figure 8 , in order to drive the first conveyor belt 822 and the second conveyor belt 834 to convey, the second conveyor mechanism 83 further includes a rotating source 84 and a linkage member 85. The rotating source 84 controls the rotation of the sleeve rod two 8322 through the linkage member 85 to drive the second conveyor belt 834 to convey; and there is a synchronizing member 9 between the second conveyor mechanism 83 and the first conveyor mechanism 82 on the side of the second conveyor mechanism 83 close to the end 19. The synchronizing member 9 is used to drive the conveyor roller 821 of the first conveyor mechanism 82 and the limiting roller 831 of the second conveyor mechanism 83 to rotate synchronously to drive the first conveyor belt 822 to convey.

[0047] Specifically, the rotation source 84 is a rotating motor fixedly connected to the second inner shaft 8321 through a connecting seat, and the rotation source 84 can be rotated forward and reversely. The linkage member 85 includes a first gear 851 and a second gear 852. The first gear 851 is coaxially fixedly sleeved on the outer wall of the second sleeve rod 8322, and the second gear 852 is coaxially fixed on the output end of the rotation source 84, and the first gear 851 is meshed with the second gear 852. The rotation source 84 drives the second gear 852 to rotate, thereby driving the first gear 851 and the second sleeve rod 8322 to rotate, and then drives the second conveyor belt 834 to transmit.

[0048] The synchronous member 9 includes a first sprocket 91, a second sprocket 92 and a chain 93. The first sprocket 91 is coaxially sleeved and fixed on the outer wall of the sleeve rod 1 8312, the second sprocket 92 is coaxially fixed and sleeved on the outer wall of the end of the conveying roller 821 near the sleeve rod 1 8312, and the chain 93 is sleeved and meshed with the first sprocket 91 and the second sprocket 92 at the same time, so that when the second conveyor belt 834 is transmitted to drive the sleeve rod 1 8312 to rotate, the first conveyor belt 822 of the second conveying mechanism 83 near the end end 19 is driven to be transmitted synchronously and in the same direction through the rotation of the conveying roller 821.

[0049] Reference Figure 5 and Figure 8 In addition, since the first conveying mechanism 82 closest to the initial end 18 is not matched with the synchronous member 9, the first conveying mechanism 82 closest to the second elevator 72 is matched with the driving motor 20, the driving motor 20 is installed on the support frame 81, and the output end of the driving motor 20 is connected to one of the conveying rollers 821 in the first conveying mechanism 82 to drive the conveying roller 821 to rotate. Similarly, since the second conveying mechanism 83 closest to the end end 19 is not provided with the first conveying mechanism 82 on the side away from the second elevator 72, the second conveying mechanism 83 farthest from the second elevator 72 is not matched with the synchronous member 9.

[0050] Reference Figure 1 In addition, the batching unit includes a batching conveyor 21 and a third elevator 22. The batching conveyor 21 is a conveying device that is conveyed by a belt. The conveying belt of the batching conveyor 21 is conveyed in a horizontal direction and is opposite to the outlets at the bottom of all storage bins 1 at the same time, and the discharge end of the batching conveyor 21 corresponds to the feed end of the third elevator 22. The third elevator 22 is an existing skirt baffle belt elevator, and the discharge end of the third elevator 22 corresponds to the feed port of the mixing tank 2, so as to transport the aggregate received from the batching conveyor 21 to the mixing tank 2.

[0051] The implementation principle of the aggregate feeding and batching system of a concrete mixing plant in an embodiment of the present application is as follows: First, open the feeding port 15 of the storage bin 1 that needs to be replenished, and rotate the second conveyor belt 834 above the storage bin 1 into the storage bin 1. The feeding truck travels on a flat ground to the blanking pit 3 for discharging. The aggregate falls from the discharging hopper 4 to the first elevator 71 for conveying, and then the aggregate falls to the first conveyor belt 822 through the second elevator 72. It is alternately conveyed by the first conveyor belt 822 and the second conveyor belt 834 to the first conveyor belt 822 above the storage bin 1 that needs to be replenished. The aggregate falls from the first conveyor belt 822 to the second conveyor belt 834 and is sent to the storage bin 1 by the second conveyor belt 834.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An aggregate feeding and batching system for a concrete mixing plant, characterized in that: It includes a feeding unit, a storage bin (1), a batching unit and a mixing tank (2); a plurality of the storage bins (1) are arranged in a straight line; the feeding unit is used to replenish materials to the storage bin (1); the batching unit is arranged between the storage bin (1) and the mixing tank (2) and is used to convey the aggregate discharged from the storage bin (1) into the mixing tank (2); the feeding unit includes, a blanking pit (3), which is recessed downward relative to the ground; a discharging hopper (4), which is located in the blanking pit (3), has a feeding port (5) at the upper part and a discharging port (6) at the bottom; a lifting device (7), which extends from the blanking pit (3) to the storage bin (1) located at the edge and is used to convey the aggregate from the discharging port (6) to the top of the storage bin (1); a material distributing device (8), which is used to receive the aggregate conveyed by the lifting device (7) and distribute the aggregate into the corresponding storage bin (1).

2. The aggregate feeding and batching system of a concrete mixing plant according to claim 1, wherein: The material distributing device (8) includes a support frame (81), a first conveyor mechanism (82) and a second conveyor mechanism (83); the support frame (81) faces the storage bin (1), a plurality of groups of the first conveyor mechanism (82) and the second conveyor mechanism (83) are alternately arranged along the distribution direction of the storage bin (1), and both the first conveyor mechanism (82) and the second conveyor mechanism (83) are located above the storage bin (1), and the number of groups of the second conveyor mechanism (83) is the same as the number of groups of the storage bin (1); Each group of the first conveyor mechanism (82) includes a conveyor roller (821) and a first conveyor belt (822); two conveyor rollers (821) are arranged horizontally and are rotatably connected to the support frame (81); the first conveyor belt (822) is conveyed on the conveyor roller (821) along the distribution direction of the storage bin (1); Each group of the second conveyor mechanism (83) includes a limiting roller (831), a moving roller (832), a connecting rod (833), a second conveyor belt (834) and a driving source (835); the limiting roller (831) is rotatably connected to the support frame (81), and the limiting roller (831) is parallel to the conveyor roller (821); the moving roller (832) is located on the side of the limiting roller (831) close to the lifting device (7), and the moving roller (832) is parallel to the limiting roller (831), and the two ends of the connecting rod (833) away from each other are respectively rotatably sleeved on the limiting roller (831) and the moving roller (832); the second conveyor belt (834) is simultaneously sleeved and conveyed on the limiting roller (831) and the moving roller (832); the driving source (835) is installed on the support frame (81) and is connected to the moving roller (832) for driving the moving roller (832) to swing axially around the limiting roller (831); Among them, all the conveying rollers (821) are located on the same horizontal plane, the limiting roller (831) is located above the adjacent conveying roller (821), the moving roller (832) is located below the adjacent conveying roller (821), and the moving roller (832) is opposite to the top of the storage bin (1).

3. A kind of aggregate feeding and batching system for a concrete mixing plant according to claim 2, characterized in that: The limiting roller (831) includes an inner shaft one (8311) and a sleeve rod one (8312). The inner shaft one (8311) is rotatably connected to the support frame (81), and the sleeve rod one (8312) is coaxially and rotatably sleeved on the outer wall of the inner shaft one (8311). The moving roller (832) includes an inner shaft two (8321) and a sleeve rod two (8322). The sleeve rod two (8322) is rotatably sleeved on the outer wall of the inner shaft two (8321). The second conveyor belt (834) is simultaneously sleeved and conveyed on the sleeve rod one (8312) and the sleeve rod two (8322). The driving source (835) has a base end and a telescopic end. The telescopic end can telescopically move relative to the base section, and the base end is hinged to the support frame (81), and the telescopic end is connected to the inner shaft two (8321).

4. The aggregate feeding and batching system of a concrete mixing plant according to claim 3, characterized in that: The second conveying mechanism (83) further includes a rotating source (84). The rotating source (84) is connected to the telescopic end or the inner shaft two (8321), and the rotating source (84) controls the rotation of the sleeve rod two (8322) through a linkage member (85).

5. The aggregate feeding and batching system of a concrete mixing plant according to claim 4, characterized in that: A synchronizing member (9) is arranged between the sleeve rod one (8312) and the adjacent conveying roller (821) to enable the sleeve rod one (8312) and the adjacent conveying roller (821) to rotate synchronously.

6. The aggregate feeding and batching system of a concrete mixing plant according to claim 2, characterized in that: The second conveyor belt (834) is a skirt baffle type belt.

7. A kind of aggregate feeding and batching system for a concrete mixing plant according to claim 1, characterized in that: The lifting device (7) includes a first elevator (71) and a second elevator (72). The first elevator (71) is erected in the blanking pit (3), the second elevator (72) is erected on the ground, and the feeding end of the first elevator (71) is opposite to the discharge port (6), the discharging end of the first elevator (71) is opposite to the feeding end of the second elevator (72), and the discharging end of the second elevator (72) is opposite to the material distributing device (8).

8. A kind of aggregate feeding and batching system for a concrete mixing plant according to claim 1, characterized in that: A cover plate (10) is hinged to the discharging hopper (4) at the feeding port (5).

9. The aggregate feeding and batching system of a concrete mixing plant according to claim 1, characterized in that: A plurality of guide plates (11) are alternately distributed on the inner side walls of the opposite sides of the discharging hopper (4) along the direction close to the discharge port (6). The guide plates (11) extend obliquely downward along the direction away from the inner side wall of the connected discharging hopper (4).

10. A kind of aggregate feeding and batching system for a concrete mixing plant according to claim 9, characterized in that: One end of the guide plate (11) connected to the inner wall of the discharging hopper (4) is connected by a hinge. One end of the guide plate (11) far from its hinged end is connected with an extension shaft (12). A travel groove (13) for the extension shaft (12) to move is formed on the wall of the discharging hopper (4). The travel groove (13) is in an arc shape coaxial with the hinged end of the guide plate (11), and an elastic member (14) for supporting the extension shaft (12) is arranged in the discharging hopper (4) in the travel groove (13).

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