High-speed multichannel dynamic weighing device

Abstract

The invention belongs to the technical field of weighing, and particularly relates to a high-speed multi-channel dynamic weighing device which is internally provided with a main box body, the upper end face of the main box body is fixedly provided with a pneumatic telescopic rod capable of performing telescopic motion, the other end of the pneumatic telescopic rod is fixedly provided with a supporting rack, and the front side and the rear side of the supporting rack are fixedly provided with two sets of lifting racks which are symmetrical front and back. A shock-proof cavity with an upward opening is formed in the lifting rack, two sets of weighing sensors which are symmetrical front and back are fixedly arranged in the lifting rack, a positioning rack is fixedly arranged on the upper end faces of the weighing sensors, a threaded cavity with an upward opening is formed in the positioning rack, and two sets of threaded sliding blocks which can move oppositely and are opposite in thread are arranged in the threaded cavity. Therefore, classified statistics of the weight is achieved, it is ensured that each vehicle can accurately display the weight, whether the weights of different goods are correct or not can be further conveniently calculated, and the accuracy and precision of follow-up statistics are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of weighing, and particularly to a high-speed multi-channel dynamic weighing device. Background Art

[0002] For a high-speed multi-channel digital dynamic weighing system, a digital weighing sensor integrates a high-performance MCU, an ADC, a signal amplification and filtering circuit, an analog weighing sensor, a communication circuit, etc., compensates and adjusts analog signals, integrates other sensors, corrects performance such as non-linearity and hysteresis, and adopts a CAN bus method for topology. In the process of using an existing high-speed multi-channel dynamic weighing device, the installation and disassembly are relatively complex. Thus, once a detection device fails, it is not convenient for subsequent maintenance and repair, resulting in poor practicability. Moreover, it is impossible to accurately grasp the weighing time of a train, so it is very easy to perform measurement before a train has completely passed, resulting in too small measured weight. In addition, the existing technology cannot perform grouped measurements according to the length of the train, and due to the vibration generated during the dynamic weighing of the train, the weighing value of the weighing device has an error, further affecting subsequent statistics and records. Summary of the Invention

[0003] An object of the present invention is to provide a high-speed multi-channel dynamic weighing device to overcome the above-mentioned defects in the prior art.

[0004] According to a high-speed multi-channel dynamic weighing device of the present invention, it includes a main box body. An air-operated telescopic rod capable of telescopic movement is fixedly provided on the upper end surface of the main box body. The other end of the air-operated telescopic rod is fixedly provided with a support frame. Two groups of front and rear symmetric lifting frames are fixedly provided on the front and rear sides of the support frame. An opening-up shock-absorbing cavity is provided inside the lifting frame. Two groups of front and rear symmetric weighing sensors are fixedly provided inside the lifting frame. A positioning frame is fixedly provided on the upper end surface of the weighing sensor. A threaded cavity with an upward opening is provided inside the positioning frame. Two groups of threaded sliders capable of moving towards each other and having opposite threads are provided inside the threaded cavity. Clamping frames are respectively fixedly provided on the upper end surfaces of the two groups of threaded sliders. C-shaped grooves are provided on the opposite side end surfaces of the two groups of clamping frames.

[0005] As a further technical solution of the present invention, two groups of left and right symmetric limiting sleeves are fixedly provided on the upper end surface of the main box body. A limiting cavity is provided inside the limiting sleeve. A limiting shaft is fixedly provided on the lower end surface of the support frame and inserted into the limiting cavity. A telescopically movable limiting spring is provided directly between the lower end surface of the limiting shaft and the upper end surface of the main box body.

[0006] As a further technical solution of the present invention, a telescopically movable shock-absorbing spring is fixedly provided on the upper end surface of the shock-absorbing cavity. The other end of the shock-absorbing spring is fixedly connected to the lower end surface of the positioning frame.

[0007] As a further technical solution of the present invention, a threaded lead screw is rotatably provided between the front and rear walls of the threaded cavity. One end face of the threaded lead screw penetrates through one end face of the positioning frame away from the symmetry center. A rotating nut is fixedly provided on the end face of the threaded lead screw away from the symmetry center. The threaded lead screw is in threaded cooperation with the threaded slider.

[0008] As a further technical solution of the present invention, a track body is provided between the symmetrically arranged clamping frames on the left and right.

[0009] As a further technical solution of the present invention, uniformly distributed transmission lines are fixedly provided on the front end face of the weighing sensor, and a sensor signal box is fixedly provided at the other end of the transmission lines.

[0010] As a further technical solution of the present invention, two sets of power frames that are symmetrically arranged front and rear are respectively fixedly provided on the front and rear end faces of the main box body. A laser emitter is fixedly provided on one end face of one of the power frames close to the symmetry center, and a laser receiver is fixedly provided on one end face of the other set of power frames close to the symmetry center. The laser receiver cooperates with the laser emitter, and the laser receiver and the laser emitter reach the middle height of the train.

[0011] As a further technical solution of the present invention, a pneumatic suction cup is fixedly provided on the upper end face of the positioning frame.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. When the train passes between the laser emitter and the laser receiver in the present invention, the light emitted by the laser emitter is blocked. However, due to multiple sets of laser receivers and laser emitters, the light passing through the gaps between each carriage of the train can pass smoothly, so as to calculate the length of the train and conduct grouped measurement for each carriage of the train, thereby ensuring the accurate positioning measurement time. When the weight of the train presses on the track body, the gravity is finally transmitted to the weighing sensor through the clamping frame, the threaded slider, and the positioning frame, so that the weighing sensor realizes the gravity measurement of each carriage of the moving train. Finally, it is transmitted to the sensor signal box through the transmission line, so as to realize the classification and statistics of the weight, and further ensure that the weight of each vehicle can be accurately displayed, which is further convenient for calculating whether the weight of different goods is correct, and further facilitates the accuracy and precision of subsequent statistics.

[0014] 2. By rotating the rotating nut, the threaded lead screw is driven to rotate, thereby driving the threaded slider and the clamping frame to move towards each other. Then, the track body is inserted into the C-shaped groove of the clamping frame, thus achieving the rapid clamping and fixing of the track body. At the same time, the pneumatic suction cup starts to adsorb the lower end face of the track body, thereby achieving double fixation of the track body, ensuring the stability during weighing, further ensuring the rapid installation and disassembly of the device, changing the traditional and cumbersome disassembly and assembly process, simplifying the disassembly process, facilitating repair and replacement of internal parts, reducing standby time, and greatly enhancing the working efficiency and practicality.

[0015] 3. When the vibration brought by the train movement reaches the track body, the track body, the clamping frame, and the positioning frame start to move up and down, and the transmitted vibration is passed to the weighing sensor. At the same time, the shock-absorbing spring plays a role in supporting and shock-absorbing, thus ensuring the maximum degree of impact cancellation, reducing the error caused by vibration, and further ensuring the accuracy during dynamic detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the left view of the present invention;

[0017] Figure 2 is the right view of the present invention;

[0018] Figure 3 is the left view of the present invention;

[0019] Figure 4 is the front view of the present invention;

[0020] Figure 5 is the present invention Figure 4 schematic diagram of A-A in;

[0021] Figure 6 is the present invention Figure 3 schematic diagram of B-B in;

[0022] Figure 7 is the present invention Figure 5 partial enlarged schematic diagram at the lifting frame component in the present invention.

[0023] In the figure:

[0024] 11. Main box body; 12. Pneumatic telescopic rod; 13. Support frame; 14. Lifting frame; 15. Weighing sensor; 16. Positioning frame; 17. Shock-absorbing cavity; 18. Shock-absorbing spring; 19. Thread cavity; 20. Threaded lead screw; 21. Threaded slider; 22. Clamping frame; 23. Rail body; 24. Transmission line; 25. Sensor signal box; 26. Power frame; 27. Laser emitter; 28. Limit sleeve; 29. Limit spring; 30. Limit shaft; 31. Limit cavity; 32. Laser receiver; 33. Pneumatic suction cup; 34. Rotating nut. Detailed implementation manner

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention:

[0026] Refer to the attached Figures 1 - 7 , a high-speed multi-channel dynamic weighing device according to an embodiment of the present invention includes a main box body 11. An extendable pneumatic telescopic rod 12 is fixedly provided on the upper end surface of the main box body 11. The pneumatic telescopic rod 12 is used for height adjustment. The other end of the pneumatic telescopic rod 12 is fixedly provided with a support frame 13. Two groups of symmetrically arranged front and rear lifting frames 14 are fixedly provided on the front and rear sides of the support frame 13. A shock-absorbing cavity 17 with an upward opening is provided in the lifting frame 14. Two groups of symmetrically arranged front and rear weighing sensors 15 are fixedly provided in the lifting frame 14. The weighing sensors 15 are used for weight measurement. A positioning frame 16 is fixedly provided on the upper end surface of the weighing sensor 15. A thread cavity 19 with an upward opening is provided in the positioning frame 16. Two groups of thread sliders 21 that can move towards each other and have opposite threads are provided in the thread cavity 19. Clamping frames 22 are fixedly provided on the upper end surfaces of the two groups of thread sliders 21 respectively. Furthermore, the clamping frames 22 ensure the quick fixing and installation of the track. C-shaped grooves are provided on the opposite side end surfaces of the two groups of clamping frames 22, thereby increasing the adhesion force during fixing.

[0027] Among them, two groups of symmetrically arranged left and right limit sleeves 28 are fixedly provided on the upper end surface of the main box body 11. A limit cavity 31 is provided in the limit sleeve 28. A limit shaft 30 is fixedly provided on the lower end surface of the support frame 13 and inserted into the limit cavity 31. A limit spring 29 that can move telescopically is directly provided between the lower end surface of the limit shaft 30 and the upper end surface of the main box body 11. Furthermore, the limit spring 29 plays a role in ensuring the stability of the up and down movement of the support frame 13 and sharing the pressure.

[0028] Among them, a shock-absorbing spring 18 capable of telescopic movement is fixedly arranged on the upper end surface of the shock-absorbing cavity 17, and the other end of the shock-absorbing spring 18 is fixedly connected to the lower end surface of the positioning frame 16.

[0029] Among them, a threaded lead screw 20 is rotatably arranged between the front and rear walls of the threaded cavity 19. One side end surface of the threaded lead screw 20 penetrates through the side end surface of the positioning frame 16 away from the symmetry center. A rotating nut 34 is fixedly arranged on the side end surface of the threaded lead screw 20 away from the symmetry center. The threaded lead screw 20 is in threaded cooperation with the threaded slider 21.

[0030] Among them, a track body 23 is arranged between the symmetrically arranged clamping frames 22 on the left and right.

[0031] Among them, uniformly distributed transmission lines 24 are fixedly arranged on the front end surface of the weighing sensor 15. The other ends of the transmission lines 24 are fixedly provided with a sensor signal box 25, and the sensor signal box 25 functions to record and display the weight.

[0032] Among them, two sets of power frames 26 that are symmetrically arranged front and rear are respectively fixedly arranged on the front and rear side end surfaces of the main box body 11. A laser emitter 27 is fixedly arranged on the side end surface of one power frame 26 close to the symmetry. A laser receiver 32 is fixedly arranged on the side end surface of the other set of power frames 26 close to the symmetry. The laser receiver 32 cooperates with the laser emitter 27, and the laser receiver 32 and the laser emitter 27 reach the middle height of the train, thereby ensuring accurate measurement of the entry time and entry length of the train.

[0033] Among them, a pneumatic suction cup 33 is fixedly arranged on the upper end surface of the positioning frame 16.

[0034] The working process of a high-speed multi-channel dynamic weighing device of the present invention is as follows:

[0035] During operation, multiple groups of main boxes 11, support frames 13, and power frames 26 are laid below the track body 23. When the train enters the track body 23 and reaches the designated measurement area, when the train passes between the laser emitter 27 and the laser receiver 32, the light emitted by the laser emitter 27 is blocked. However, due to multiple groups of laser receivers 32 and laser emitters 27, the light passing through the gaps between each carriage of the train can pass smoothly, thereby calculating the length of the train and measuring each carriage of the train separately, ensuring the accuracy of the measurement. When the weight of the train presses on the track body 23, the gravity is transmitted to the clamping frame 22, the threaded slider 21, and the positioning frame 16, and finally transmitted to the load cell 15. Thus, the load cell 15 measures the gravity of each carriage of the moving train. Finally, it is transmitted to the sensor signal box 25 through the transmission line 24, realizing the classification and statistics of the weight, ensuring that the weight of each vehicle can be accurately displayed, further facilitating the calculation of whether the weight of different goods is correct, and further facilitating the accuracy and precision of subsequent statistics.

[0036] During installation, the worker directly places the main box 11 below the traditional track body 23 and above the positioning frame 16, facing the track body 23. At the same time, the main box 11 is fixed to the flat ground. Then, the pneumatic telescopic rod 12 starts to extend, driving the support frame 13, the lifting frame 14, the positioning frame 16, and the clamping frame 22 to move upward, ensuring that the pneumatic suction cup 33 can closely adhere to the track body 23 and ensuring the height adjustment. Then, rotate the rotating nut 34, driving the threaded screw rod 20 to rotate, and then driving the threaded slider 21 and the clamping frame 22 to move towards each other. Then, the track body 23 is inserted into the C-shaped groove of the clamping frame 22, realizing the rapid clamping and fixing of the track body 23. At the same time, the pneumatic suction cup 33 starts to adsorb the lower end face of the track body 23, providing double fixation for the track body 23, ensuring the stability during weighing, further ensuring the rapid installation and disassembly of the device, changing the traditional and cumbersome disassembly and assembly process, simplifying the disassembly process, facilitating repair and replacement of internal parts, reducing the standby time, and greatly enhancing the work efficiency and practicality.

[0037] When the vibration of the moving train is transmitted to the track body 23, the track body 23, the clamping frame 22, and the positioning frame 16 start to move up and down, and the transmitted vibration is passed to the load cell 15. At the same time, the shock-absorbing spring 18 plays a role in supporting and shock-absorbing, ensuring the maximum degree of shock cancellation, reducing the error caused by vibration, and further ensuring the accuracy during dynamic detection.

[0038] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A high-speed multi-channel dynamic weighing device, comprising a main box (11), characterized in that: A pneumatic telescopic rod (12) capable of telescopic movement is fixedly provided on the upper end surface of the main box (11); a support frame (13) is fixedly provided on the other end of the pneumatic telescopic rod (12); two groups of lifting frames (14) symmetrical in front and back are fixedly provided on the front and rear sides of the support frame (13); a shock-absorbing cavity (17) opening upward is provided in the lifting frame (14); and two groups of weighing sensors (15) symmetrical in front and back are fixedly provided in the lifting frame (14); A positioning frame (16) is fixedly provided on the upper end surface of the weighing sensor (15), a threaded cavity (19) opening upward is provided in the positioning frame (16), two groups of threaded sliders (21) which can move towards each other and have opposite threads are provided in the threaded cavity (19), and opposite clamping frames (22) are fixedly provided on the upper end surfaces of the two groups of threaded sliders (21), respectively.

2. A high-speed multi-channel dynamic weighing device according to claim 1, characterized in that: The upper end surface of the main box body (11) is fixedly provided with two groups of left-right symmetrical limit sleeves (28), and a limit cavity (31) is provided in the limit sleeves (28). The lower end surface of the support frame (13) is fixedly provided with a limit shaft (30) and inserted into the limit cavity (31), and the lower end surface of the limit shaft (30) and the upper end surface of the main box body (11) are directly provided with a limit spring (29) capable of telescopic movement.

3. A high-speed multi-channel dynamic weighing device according to claim 1, characterized in that: A shock absorbing spring (18) capable of telescopic movement is fixedly arranged on the upper end surface of the shock absorbing cavity (17), and the other end of the shock absorbing spring (18) is fixedly connected to the lower end surface of the positioning frame (16).

4. A high-speed multi-channel dynamic weighing device according to claim 1, characterized in that: A threaded screw (20) is rotatably provided between the front and rear walls of the threaded cavity (19), one end surface of the threaded screw (20) passes through the end surface of the positioning frame (16) away from the symmetry center, a rotating nut (34) is fixed to the end surface of the threaded screw (20) away from the symmetry center, and the threaded screw (20) is threadably matched with the threaded slider (21).

5. A high-speed multi-channel dynamic weighing device according to claim 1, characterized in that: A track body (23) is provided between the left-right symmetrical clamping frames (22).

6. A high-speed multi-channel dynamic weighing device according to claim 1, characterized in that: The front end surface of the weighing sensor (15) is fixedly provided with evenly distributed transmission lines (24), and the other end of the transmission line (24) is fixedly provided with a sensor signal box (25).

7. A high-speed multi-channel dynamic weighing device according to claim 1, characterized in that: Two groups of power frames (26) are fixedly provided on the front and rear side end surfaces of the main box body (11), and a laser transmitter (27) is fixedly provided on the end surface of one side of the power frames (26) close to the symmetry, and a laser receiver (32) is fixedly provided on the end surface of the other side of the power frames (26) close to the symmetry, and the laser receiver (32) and the laser transmitter (27) cooperate with each other, and the laser receiver (32) and the laser transmitter (27) reach the middle height of the train.

8. The high-speed multi-channel dynamic weighing device according to claim 1, characterized in that: A pneumatic suction cup (33) is fixedly provided on the upper end surface of the positioning frame (16).

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