Efficient grading counterweight device and method

Abstract

The invention discloses an efficient grading counterweight device and method, and the device comprises a feeding mechanism, a conveying mechanism, a weighing mechanism and a discharging mechanism, and the feeding mechanism, the conveying mechanism, the weighing mechanism and the discharging mechanism are sequentially arranged; the weighing mechanism comprises a rotary table conveyor, a plurality of measuring balances and a counterweight assembly, the rotary table conveyor is provided with the plurality of measuring balances, the counterweight assembly is connected with the rotary table conveyor, and each measuring balance comprises a base, a balance rod, a first tray, a second tray and a first electric push rod; the weight of the product is measured by arranging the measuring balance, the counterweight ball and other components, the weight of the counterweight ball can be replaced according to requirements, whether the weight of the measured target product meets the requirements or not is judged according to the weight of the balance rod in the measuring balance during counterweight, and the weighing mode does not need to use a weighing sensor to measure the weight of the product; therefore, the grading counterweight device can be used in some special environments, and in conclusion, the application range of the grading counterweight device can be enlarged.

Description

Technical Field

[0001] The present invention relates to the technical field of graded weight balancing devices, and in particular to a high-efficiency graded weight balancing device and method. Background Art

[0002] Grading and weighing devices are commonly used in the food, logistics and other industries. They are devices that grade and sort products according to their weight.

[0003] The principle of common graded counterweight devices is mainly based on the coordinated work of components such as weighing sensors, controllers and mechanical transmissions to accurately measure and grade objects, and then transport the objects to the designated location for counterweighting through mechanical transmission devices according to preset counterweight requirements.

[0004] However, the load cell in the above-mentioned graded weight balancing device can only bear a limited weight. When the load cell bears a weight exceeding its design range, it may be damaged or its performance may degrade. Therefore, during use, the weight of the product should be controlled within the load-bearing value of the load cell. The service life of the load cell will be shortened when it works in some special environments such as high temperature, high humidity or strong electromagnetic interference. Therefore, it should be avoided to work in special environments during use. In summary, the above-mentioned problems will reduce the scope of use of the graded weight balancing device. Summary of the invention

[0005] The object of the present invention is to provide a high-efficiency graded weight balancing device and method, which can increase the application range of the graded weight balancing device.

[0006] To achieve the above-mentioned purpose, a high-efficiency graded counterweight device and method are provided, which include: a feeding mechanism, a conveying mechanism, a weighing mechanism and a unloading mechanism, wherein the feeding mechanism, the conveying mechanism, the weighing mechanism and the unloading mechanism are arranged in sequence; the weighing mechanism includes a turntable conveyor, a measuring scale and a counterweight assembly, a plurality of measuring scales are arranged on the turntable conveyor, the counterweight assembly is connected to the turntable conveyor, the measuring scale includes a base, a balance bar, a first tray, a second tray and a first electric push rod, the bottom of the base is connected to the turntable conveyor, the balance bar is located at the top of the base, the middle part of the balance bar is rotatably connected to the base, the first tray and the second tray are respectively provided at the two ends of the balance bar, the bottom of the first tray is rotatably connected to the balance bar, the first electric push rod is tilted, the movable end of the first electric push rod is connected to a side wall of the first tray, the fixed end of the first electric push rod is fixedly connected to the balance bar, the first electric push rod is connected to the balance bar A fixed rod is arranged between them, and the second tray is fixedly connected to the balance rod; the counterweight assembly comprises a column, a rotating rod, a pull rope, a counterweight ball and a second electric push rod, and the columns are arranged in plurality at intervals, and the plurality of columns are vertically arranged above the turntable conveyor, the tops of the plurality of columns are rotatably arranged with rotating rods, one ends of the plurality of rotating rods are arranged with pull ropes, and the bottoms of the plurality of pull ropes are respectively arranged with counterweight balls of different weights, and the plurality of counterweight balls are located above the second tray, and the other ends of the plurality of rotating rods are connected by a connecting rod, and a slider is slidably arranged at the bottom of the rotating rod in the middle, the movable end of the second electric push rod is rotatably connected to the slider, the fixed end of the second electric push rod is fixedly connected to the column in the middle, and a reinforcing rod is arranged between the second electric push rod and the column in the middle; the base is provided with sensors under the first tray and the second tray, and the sensors, the first electric push rod and the second electric push rod are all electrically connected to the control integration.

[0007] The working principle and beneficial effects of the present invention: the turntable conveyor, the first electric push rod and the second electric push rod are all existing technologies and will not be described in detail here; the fixing rod can strengthen the connection between the first electric push rod and the balance rod, and the reinforcing rod can strengthen the connection between the second electric push rod and the column; the sensor, the first electric push rod and the second electric push rod are all electrically connected to the control integration, and when the sensor receives the contact signal of the first pallet and the second pallet, it will feed back the signal to the control integration, and the control integration will use this to judge the operation of the first electric push rod and the second electric push rod; when the graded weight counterweight device is working, the products to be graded and counterweighted are placed in the feeding mechanism, and the conveying mechanism conveys the products in the feeding mechanism to the weighing mechanism. When the product arrives at the weighing mechanism, the product is located at the first tray in the measuring scale, and the turntable conveyor transports the measuring scale to the counterweight assembly. The counterweight assembly works, the second electric push rod extends, the balance bar tilts, one end of the counterweight ball moves downward, and the counterweight ball falls into the second tray. When the balance bar is horizontal or has a small inclination angle, the first tray and the second tray do not touch the sensor at the bottom, and the product meets the weight requirement of the corresponding grade of the counterweight ball. The first electric push rod extends, the first tray rotates, and the product in the first tray falls into the discharging mechanism; when the balance bar has a large inclination angle, and one of the first tray and the second tray touches the sensor at the bottom, the product does not meet the weight requirement of the corresponding grade of the counterweight ball.

[0008] By setting up components such as a measuring balance and a balancing ball to measure the weight of the product, the weight of the balancing ball can be replaced as needed. When balancing, the weight of the balance bar in the measuring balance is used to determine whether the weight of the measured target product meets the requirements. This weighing method does not require the use of a weighing sensor to measure the weight of the product, so it can be used in some special environments. In summary, the above schemes can increase the scope of use of the graded balancing device.

[0009] According to the described efficient graded weight balancing device and method, the feeding mechanism includes a mounting frame, a collecting hopper and a hydraulic cylinder. The collecting hopper is arranged on the top of the mounting frame. The collecting hopper is provided with an opening on the side opposite to the conveying mechanism. The bottom of the collecting hopper is rotatably connected to the mounting frame at one end of the opening. The fixed end of the hydraulic cylinder is connected to the mounting frame, and the movable end of the hydraulic cylinder is connected to the bottom of the collecting hopper. The hydraulic cylinder is located at the end away from the conveying mechanism.

[0010] When the feeding mechanism is working, the products to be graded and weighed are placed in the collecting hopper, and the products in the collecting hopper reach the conveying mechanism through the opening. When there are fewer products at the opening of the collecting hopper, the hydraulic cylinder is started and extended. The hydraulic cylinder lifts the end of the collecting hopper away from the opening, thereby concentrating the products in the collecting hopper to the opening of the collecting hopper.

[0011] According to the described efficient graded weight balancing device and method, the conveying mechanism includes a belt conveyor and a diverter assembly, one end of the belt conveyor is arranged with a left-right spacing from the opening end of the collecting hopper, the other end of the belt conveyor is provided with a diverter assembly, and the other end of the belt conveyor is arranged with a vertical spacing from the first tray.

[0012] The belt conveyor is a climbing belt conveyor, which is a prior art and will not be described in detail here; the belt conveyor transports the product in the collecting hopper to the weighing mechanism, and uses a diversion component to divert the product before reaching the weighing mechanism.

[0013] According to the described efficient graded weight balancing device and method, the diversion component includes a cross bar and a partition, both ends of the cross bar are mounted on the belt conveyor, and a plurality of partitions are provided, and the plurality of partitions are arranged at intervals.

[0014] The position of the partition in the diversion assembly is adjustable, and the distance between two adjacent partitions is smaller than the sum of the average widths of the two products, thereby ensuring that the number of products falling into the first tray is one.

[0015] According to the described efficient grading and balancing weight device and method, the unloading mechanism includes an unloading track, a grading frame, a frame and an aggregate frame. There are multiple unloading tracks, and the multiple unloading tracks are all tiltedly arranged on the frame. The high ends of the multiple unloading tracks are located below the first tray, and the lower ends of the multiple unloading tracks are all spaced apart with grading frames, and the aggregate frame is located on one side of the unloading track.

[0016] By setting up a feeding mechanism, the graded products fall into the feeding track and enter the corresponding grading frame through the feeding track.

[0017] According to the described efficient grading weight balancing device and method, a plurality of electronic scales are arranged on the frame, and the grading frame is located above the electronic scales.

[0018] The electronic scale is a detachable structure. By setting up the electronic scale, the total weight of the product after grading can be measured.

[0019] An efficient graded weight balancing device and method, comprising the following steps:

[0020] S1. Debug the equipment and replace the corresponding weight ball according to the classification requirements of the product to be weighed;

[0021] When the product classification is determined to be J=1, 2, 3, ..., n-1, the corresponding product weight is M1, M2, M3, ..., Mn-1, and the corresponding weight ball weight is M1, M2, M3, ..., Mn-1. The unloading track and the material distribution frame corresponding to the first tray in the weight assembly under the weight ball with a weight of M1 are the unloading channel and temporary storage area for the product with a weight classification of 1, and the unloading track and the material distribution frame corresponding to the first tray in the weight assembly under the weight ball with a weight of M2 are the unloading channel and temporary storage area for the product with a weight classification of 2, and so on.

[0022] S2. Convey products, place the products to be graded in the collecting hopper, turn on the equipment, and start the belt conveyor and turntable conveyor;

[0023] The belt conveyor conveys the products in the collecting hopper to the diversion component. The diversion component separates the products on the belt conveyor to ensure that the number of products falling on the first tray is 1. When there is a product on the first tray, the bottom of the first tray touches the corresponding sensor, and the height of the first tray is lower than that of the second tray.

[0024] The turntable conveyor drives a plurality of measuring scales to move along the turntable conveyor;

[0025] S3. Weight screening: Assuming that the weight of the product in the first tray is G, the measuring balance containing the product moves to the bottom of the counterweight ball through the turntable conveyor, and the second electric push rod extends, so that the counterweight ball falls into the corresponding second tray;

[0026] S31. The turntable conveyor conveys the product to the bottom of the counterweight ball corresponding to level 1. When G is equal to M1, the balance bar is in a horizontal state or a state with a small inclination angle, and the first tray and the second tray do not touch the sensor at the bottom thereof. The weight of the product meets the weight requirement of level 1, and the first electric push rod works;

[0027] S32. The turntable conveyor conveys the product to the bottom of the counterweight ball corresponding to level 1. When G is greater than M1 or G is less than M1, the tilt angle of the balance bar is large, the first tray continuously touches the sensor at its bottom or the second tray touches the sensor at its bottom. The weight of the product does not meet the weight requirement of level 1, and the first electric push rod does not work;

[0028] S33. By analogy with the steps of S31 and S32, the product can be transported to the working state below the counterweight ball corresponding to level 2, 3, ..., n-1;

[0029] S4. When the first electric push rod is working, the first electric push rod is extended, the first tray is rotated, the products in the first tray are poured out and fall into the corresponding unloading track, and then reach the corresponding grading frame through the unloading track;

[0030] S5. When the turntable conveyor transports the measuring scale to the aggregate frame, the first electric push rod works, and some products that do not meet the weight requirements of the levels 1, 2, 3, ..., n-1 will fall into the aggregate frame;

[0031] S6. The electronic scale under the grading frame can measure the total weight of the products in that grade after grading.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0034] Figure 1 It is a three-dimensional diagram of a high-efficiency graded weight balancing device and method.

[0035] Figure 2 The present invention is a partial stereoscopic diagram of a weighing mechanism of a high-efficiency graded weight balancing device and method.

[0036] Figure 3 A three-dimensional diagram of a measuring balance for a high-efficiency graded weight balancing device and method.

[0037] Figure 4 The present invention is a stereoscopic diagram of a counterweight assembly of a high-efficiency graded counterweight device and method.

[0038] Figure 5 The present invention is a three-dimensional diagram of a conveying mechanism of a high-efficiency graded weight balancing device and method.

[0039] Figure 6 The present invention is a three-dimensional diagram of a feeding mechanism of a high-efficiency graded weight balancing device and method.

[0040] Figure 7 The present invention is a stereoscopic diagram of a material discharging mechanism of a high-efficiency graded weight balancing device and method.

[0041] Among them: 1. feeding mechanism; 11. mounting frame; 12. collecting hopper; 13. hydraulic cylinder; 2. conveying mechanism; 21. belt conveyor; 22. diversion assembly; 221. cross bar; 222. partition; 3. weighing mechanism; 31. turntable conveyor; 32. measuring balance; 321. base; 322. balance bar; 323. first tray; 324. second tray; 325. first electric push rod; 326. fixed rod; 33. counterweight assembly; 331. column; 332. rotating rod; 333. pull rope; 334. counterweight ball; 335. second electric push rod; 336. slider; 337. reinforcing rod; 4. unloading mechanism; 41. unloading track; 42. grading frame; 43. rack; 44 collecting frame; 45 electronic scale. DETAILED DESCRIPTION

[0042] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In the description of the present invention, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0045] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0046] Reference Figure 1-Figure 7 , a high-efficiency graded weight balancing device and method of the present invention, comprising: referring to Figure 1-Figure 7The invention discloses an efficient graded weight balancing device and method, which comprises: a feeding mechanism 1, a conveying mechanism 2, a weighing mechanism 3 and a feeding mechanism 4, wherein the feeding mechanism 1, the conveying mechanism 2, the weighing mechanism 3 and the feeding mechanism 4 are arranged in sequence; the weighing mechanism 3 comprises a turntable conveyor 31, a measuring balance 32 and a weight balancing assembly 33, wherein a plurality of measuring balances 32 are arranged on the turntable conveyor 31, the weight balancing assembly 33 is connected to the turntable conveyor 31, the measuring balance 32 comprises a base 321, a balancing rod 322, a first tray 323, a second tray 324 and a first electric push rod 325 The bottom of the base 321 is connected to the turntable conveyor 31, the balance bar 322 is located at the top of the base 321, the middle of the balance bar 322 is rotatably connected to the base 321, the two ends of the balance bar 322 are respectively provided with a first tray 323 and a second tray 324, the bottom of the first tray 323 is rotatably connected to the balance bar 322, the first electric push rod 325 is arranged obliquely, the movable end of the first electric push rod 325 is connected to a side wall of the first tray 323, the fixed end of the first electric push rod 325 is fixedly connected to the balance bar 322, and a fixed The second tray 324 is fixedly connected to the balance rod 322; the counterweight assembly 33 includes a column 331, a rotating rod 332, a pull rope 333, a counterweight ball 334 and a second electric push rod 335. The columns 331 are arranged at intervals, and the multiple columns 331 are vertically arranged above the turntable conveyor 31. The tops of the multiple columns 331 are rotatably provided with rotating rods 332, and one end of the multiple rotating rods 332 is provided with pull ropes 333. The bottoms of the multiple pull ropes 333 are respectively provided with counterweight balls 334 of different weights, and the multiple counterweight balls 334 are located on the second tray 324. The other ends of the plurality of rotating rods 332 are connected by a connecting rod, a slider 336 is slidably arranged at the bottom of the rotating rod 332 in the middle, the movable end of the second electric push rod 335 is rotatably connected to the slider 336, the fixed end of the second electric push rod 335 is fixedly connected to the column 331 in the middle, and a reinforcing rod 337 is arranged between the second electric rod 335 and the column 331 in the middle; the base 321 is provided with sensors under the first tray 323 and the second tray 324, and the sensor, the first electric push rod 325 and the second electric push rod 335 are all electrically connected to the control integration.

[0047] Specifically, the turntable conveyor 31, the first electric push rod 325 and the second electric push rod 335 are all existing technologies and are not described in detail here; the fixing rod 326 can strengthen the connection between the first electric push rod 325 and the balance rod 322, and the reinforcing rod 337 can strengthen the connection between the second electric push rod 335 and the column 331; the sensor, the first electric push rod 325 and the second electric push rod 335 are all electrically connected to the control integration. When the sensor receives the contact signal of the first tray 323 and the second tray 324, it will feed back this signal to the control integration, and the control integration will use this to judge the operation of the first electric push rod 325 and the second electric push rod 335; when the graded weight balancing device is working, the products to be graded and weighed are placed in the feeding mechanism 1, and the conveying mechanism 2 conveys the products in the feeding mechanism 1 to the weighing mechanism 3. When the products arrive at the weighing mechanism 3, The product is located at the first tray 323 in the measuring scale 32, and the turntable conveyor 31 conveys the measuring scale 32 to the counterweight assembly 33. The counterweight assembly 33 works, the second electric push rod 335 extends, the balance bar 322 tilts, one end of the counterweight ball 334 moves downward, and the counterweight ball 334 falls into the second tray 324. When the balance bar 322 is horizontal or has a small tilt angle, the first tray 323 and the second tray 324 do not touch the sensor at the bottom thereof, and the product meets the weight requirement of the corresponding grade of the counterweight ball 334. The first electric push rod 325 extends, the first tray 323 rotates, and the product in the first tray 323 falls into the discharging mechanism; when the balance bar 322 has a large tilt angle, and one of the first tray 323 and the second tray 324 touches the sensor at the bottom thereof, the product does not meet the weight requirement of the corresponding grade of the counterweight ball 334.

[0048] Optionally, the feeding mechanism 1 includes a mounting frame 11, a collecting hopper 12 and a hydraulic cylinder 13. The collecting hopper 12 is arranged on the top of the mounting frame 11. The collecting hopper 12 is provided with an opening on the side opposite to the conveying mechanism 2. The bottom of the collecting hopper 12 is rotatably connected to the mounting frame 11 at one end of the opening. The fixed end of the hydraulic cylinder 13 is connected to the mounting frame 11, and the movable end of the hydraulic cylinder 13 is connected to the bottom of the collecting hopper 12. The hydraulic cylinder 13 is located at the end away from the conveying mechanism 2.

[0049] Optionally, the conveying mechanism 2 includes a belt conveyor 21 and a diverter assembly 22, one end of the belt conveyor 21 is spaced apart from the opening end of the collecting hopper 12 to the left and right, the other end of the belt conveyor 21 is provided with a diverter assembly 22, and the other end of the belt conveyor 21 is spaced apart from the first tray 323 to the top and bottom.

[0050] Optionally, the diversion component 22 includes a cross bar 221 and a partition 222 , both ends of the cross bar 221 are mounted on the belt conveyor 21 , and a plurality of partitions 222 are provided, and the plurality of partitions 222 are arranged at intervals.

[0051] Optionally, the unloading mechanism 4 includes an unloading track 41, a grading frame 42, a frame 43 and an aggregate frame 44. There are multiple unloading tracks 41, and the multiple unloading tracks 41 are all tilted on the frame 43. The high ends of the multiple unloading tracks 41 are located below the first tray 323, and the lower ends of the multiple unloading tracks 41 are each spaced apart with a grading frame 42, and the aggregate frame 44 is located on one side of the unloading track 41.

[0052] Optionally, a plurality of electronic scales 45 are disposed on the frame 43 , and the grading frame 42 is located above the electronic scales 45 .

[0053] Specifically, an efficient graded weight balancing device and method comprises the following steps:

[0054] S1. Debug the equipment and replace the corresponding weight ball according to the classification requirements of the product to be weighed;

[0055] When the product classification is determined to be J=1, 2, 3, ..., n-1, the corresponding product weight is M1, M2, M3, ..., Mn-1, and the corresponding weight of the counterweight ball 334 is M1, M2, M3, ..., Mn-1. The unloading track 41 and the material distribution frame corresponding to the first tray 323 in the counterweight assembly 33 below the counterweight ball 334 with a weight of M1 are the unloading channel and temporary storage area for the product with a weight classification of 1, and the unloading track 41 and the material distribution frame corresponding to the first tray 323 in the counterweight assembly 33 below the counterweight ball 334 with a weight of M2 are the unloading channel and temporary storage area for the product with a weight classification of 2, and so on.

[0056] S2 conveying products, the product to be graded is placed in the collecting hopper 12, the equipment is turned on, the belt conveyor 21 and the turntable conveyor 31 are started;

[0057] The belt conveyor 21 conveys the products in the collecting hopper 12 to the diverter assembly 22. The diverter assembly 22 separates the products on the belt conveyor 21 to ensure that the number of products falling on the first tray 323 is 1. When there is a product on the first tray 323, the bottom of the first tray 323 touches the corresponding sensor, and the height of the first tray 323 is lower than the height of the second tray 324.

[0058] The turntable conveyor 31 drives a plurality of measuring scales 32 to move along the turntable conveyor 31;

[0059] S3. Weight screening: Assuming that the weight of the product in the first tray 323 is G, the measuring balance 32 containing the product is moved to the bottom of the weight ball 334 through the turntable conveyor 31, and the second electric push rod 335 is extended, so that the weight ball 334 falls into the corresponding second tray 324;

[0060] S31. The turntable conveyor 31 conveys the product to the bottom of the counterweight ball 334 corresponding to level 1. When G is equal to M1, the balance bar is in a horizontal state or a state with a small inclination angle, and the first tray 323 and the second tray 324 do not touch the sensor at the bottom thereof. The weight of the product meets the weight requirement of level 1, and the first electric push rod 325 works;

[0061] S32. The turntable conveyor 31 conveys the product to the bottom of the counterweight ball 334 corresponding to level 1. When G is greater than M1 or G is less than M1, the tilt angle of the balance bar is large, the first tray 323 continuously touches the sensor at its bottom or the second tray 324 touches the sensor at its bottom. The weight of the product does not meet the weight requirement of level 1, and the first electric push rod 325 does not work;

[0062] S33. By analogy with the steps of S31 and S32, the product can be transported to the working state below the weighted ball 334 corresponding to level 2, 3, ..., n-1;

[0063] S4. When the first electric push rod 325 is working, the first electric push rod 325 is extended, the first tray 323 rotates, the products in the first tray 323 are poured out and fall into the corresponding unloading track 41, and then reach the corresponding grading frame 42 through the unloading track 41;

[0064] S5. When the turntable conveyor 31 transports the measuring balance 32 to the aggregate frame 44, the first electric push rod 325 works, and some products that do not meet the weight requirements of the levels 1, 2, 3, ..., n-1 will fall into the aggregate frame 44;

[0065] S6. The electronic scale 45 under the grading frame 42 can measure the total weight of the products at this level after grading.

[0066] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An efficient graded weight balancing device and method, characterized in that: include: A feeding mechanism, a conveying mechanism, a weighing mechanism and a feeding mechanism, wherein the feeding mechanism, the conveying mechanism, the weighing mechanism and the feeding mechanism are arranged in sequence; The weighing mechanism comprises a turntable conveyor, a measuring scale and a counterweight assembly, wherein a plurality of measuring scales are arranged on the turntable conveyor, the counterweight assembly is connected to the turntable conveyor, the measuring scale comprises a base, a balance bar, a first tray, a second tray and a first electric push rod, the bottom of the base is connected to the turntable conveyor, the balance bar is located at the top of the base, the middle of the balance bar is rotatably connected to the base, the two ends of the balance bar are respectively provided with a first tray and a second tray, the bottom of the first tray is rotatably connected to the balance bar, the first electric push rod is arranged obliquely, the movable end of the first electric push rod is connected to a side wall of the first tray, the fixed end of the first electric push rod is fixedly connected to the balance bar, a fixing rod is arranged between the first electric push rod and the balance bar, and the second tray is fixedly connected to the balance bar; The counterweight assembly includes a column, a rotating rod, a pull rope, a counterweight ball and a second electric push rod, wherein a plurality of the columns are arranged at intervals, and the plurality of columns are vertically arranged above the turntable conveyor, and the tops of the plurality of columns are rotatably provided with a rotating rod, and one end of the plurality of rotating rods is provided with a pull rope, and the bottoms of the plurality of pull ropes are respectively provided with counterweight balls of different weights, and the plurality of counterweight balls are located above the second pallet, and the other ends of the plurality of rotating rods are connected by a connecting rod, and a slider is slidably provided at the bottom of the rotating rod located in the middle, and the movable end of the second electric push rod is rotatably connected to the slider, and the fixed end of the second electric push rod is fixedly connected to the column located in the middle, and a reinforcing rod is provided between the second electric rod and the column located in the middle; The base is provided with sensors under the first tray and the second tray, and the sensors, the first electric push rod and the second electric push rod are all electrically connected to the control integration.

2. A high-efficiency graded weight balancing device and method according to claim 1, characterized in that: The feeding mechanism includes a mounting frame, a collecting hopper and a hydraulic cylinder. The collecting hopper is arranged on the top of the mounting frame. The collecting hopper is provided with an opening on the side opposite to the conveying mechanism. The bottom of the collecting hopper is rotatably connected to the mounting frame at one end of the opening. The fixed end of the hydraulic cylinder is connected to the mounting frame, and the movable end of the hydraulic cylinder is connected to the bottom of the collecting hopper. The hydraulic cylinder is located at the end away from the conveying mechanism.

3. A high-efficiency graded weight balancing device and method according to claim 2, characterized in that: The conveying mechanism includes a belt conveyor and a diverter assembly. One end of the belt conveyor is arranged with a left-right spacing from the opening end of the collecting hopper. The other end of the belt conveyor is provided with a diverter assembly. The other end of the belt conveyor is arranged with a left-right spacing from the first tray.

4. A high-efficiency graded weight balancing device and method according to claim 3, characterized in that: The flow diversion component includes a cross bar and a partition. Both ends of the cross bar are mounted on the belt conveyor. A plurality of partitions are provided and the plurality of partitions are arranged at intervals.

5. The high-efficiency graded weight balancing device and method according to claim 1, characterized in that: The unloading mechanism includes an unloading track, a grading frame, a frame and an aggregate frame. There are multiple unloading tracks, and the multiple unloading tracks are all tilted on the frame. The high ends of the multiple unloading tracks are located below the first tray, and the lower ends of the multiple unloading tracks are each spaced apart with a grading frame, and the aggregate frame is located on one side of the unloading track.

6. A high-efficiency graded weight balancing device and method according to claim 5, characterized in that: A plurality of electronic scales are arranged on the frame, and the grading frame is located above the electronic scales.

7. A method of a high-efficiency graded weight balancing device according to claims 1-6, characterized in that: The following steps are involved: S1. Debug the equipment and replace the corresponding weight ball according to the classification requirements of the product to be weighed; When the product classification is determined to be J=1, 2, 3, ..., n-1, the corresponding product weight is M1, M2, M3, ..., Mn-1, and the corresponding weight ball weight is M1, M2, M3, ..., Mn-1. The unloading track and the material distribution frame corresponding to the first tray in the weight assembly under the weight ball with a weight of M1 are the unloading channel and temporary storage area for the product with a weight classification of 1, and the unloading track and the material distribution frame corresponding to the first tray in the weight assembly under the weight ball with a weight of M2 are the unloading channel and temporary storage area for the product with a weight classification of 2, and so on. S2. Convey products, place the products to be graded in the collecting hopper, turn on the equipment, and start the belt conveyor and turntable conveyor; The belt conveyor conveys the products in the collecting hopper to the diversion component. The diversion component separates the products on the belt conveyor to ensure that the number of products falling on the first tray is 1. When there is a product on the first tray, the bottom of the first tray touches the corresponding sensor, and the height of the first tray is lower than that of the second tray. The turntable conveyor drives a plurality of measuring scales to move along the turntable conveyor; S3. Weight screening: Assuming that the weight of the product in the first tray is G, the measuring balance containing the product moves to the bottom of the counterweight ball through the turntable conveyor, and the second electric push rod extends, so that the counterweight ball falls into the corresponding second tray; S31. The turntable conveyor conveys the product to the bottom of the counterweight ball corresponding to level 1. When G is equal to M1, the balance bar is in a horizontal state or a state with a small inclination angle, and the first tray and the second tray do not touch the sensor at the bottom thereof. The weight of the product meets the weight requirement of level 1, and the first electric push rod works; S32. The turntable conveyor conveys the product to the bottom of the counterweight ball corresponding to level 1. When G is greater than M1 or G is less than M1, the tilt angle of the balance bar is large, the first tray continuously touches the sensor at its bottom or the second tray touches the sensor at its bottom. The weight of the product does not meet the weight requirement of level 1, and the first electric push rod does not work; S33. By analogy with the steps of S31 and S32, the product can be transported to the working state below the counterweight ball corresponding to level 2, 3, ..., n-1; S4. When the first electric push rod is working, the first electric push rod is extended, the first tray is rotated, the products in the first tray are poured out and fall into the corresponding unloading track, and then reach the corresponding grading frame through the unloading track; S5. When the turntable conveyor transports the measuring scale to the aggregate frame, the first electric push rod works, and some products that do not meet the weight requirements of the levels 1, 2, 3, ..., n-1 will fall into the aggregate frame; S6. The electronic scale under the grading frame can measure the total weight of the products in that grade after grading.

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