A kind of automatic calibration detection device of load cell

Abstract

The utility model relates to weighing sensor detection technical field especially for a kind of weighing sensor automation calibration detection device, including operation platform, the top end fixedly connected with the side plate of symmetrical arrangement of operation platform, the top end fixedly connected with the top plate of side plate, the bottom end fixedly connected with the limiting rod of top plate, the outside fixedly connected with the limiting strip of symmetrical arrangement of limiting rod, the bottom end fixedly connected with the support plate of limiting rod, in the utility model, more simple mechanical structure limiting rod and limiting strip limit the direction of weight, set first hydraulic rod and second hydraulic rod cooperation, the fixed and placement of weight is realized by the bolt structure that spring, telescopic link, locating block and fixed hole constitute, guiding groove realizes the accurate positioning of weight using simple mechanical principle, reduce its damage probability, unlike gear structure, even if wear also cannot affect the normal fixed and placement function of weight.

Description

Technical Field

[0001] This utility model relates to the field of weighing sensor detection technology, specifically to an automated calibration and detection device for weighing sensors. Background Technology

[0002] Weighing sensors are core components used to convert weight signals into electrical signals. They are widely used in industrial weighing, metering equipment, automated production lines, and other fields. Their accuracy and stability directly affect the reliability of measurement results. Therefore, calibration and testing before leaving the factory are crucial. Traditional manual calibration and testing methods suffer from problems such as low efficiency, large errors, and poor consistency. Automated calibration and testing devices, by integrating mechanical structures, control systems, and data acquisition and analysis modules, realize the full automation of weighing sensor calibration and testing, significantly improving efficiency and accuracy.

[0003] Existing automated calibration and testing devices for weighing sensors have relatively precise structures. The weight group switching mechanism (such as gears and buckles), ball screw, and guide rail are prone to gaps or wear, which leads to a decrease in the stability of the loading force. This is especially noticeable in high-frequency, high-load testing scenarios, resulting in the inaccurate loading of weights. The complex structure and relatively high maintenance costs make this a necessary solution to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide an automated calibration and testing device for weighing sensors to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An automated calibration and testing device for weighing sensors includes an operating table. Symmetrically arranged side plates are fixedly connected to the top of the operating table. A top plate is fixedly connected to the top of the side plates. A limit rod is fixedly connected to the bottom of the top plate. Symmetrically arranged limit strips are fixedly connected to the outer side of the limit rod. A support plate is fixedly connected to the bottom of the limit rod. A first buffer layer located outside the limit rod is fixedly connected to the top of the support plate. A weight is slidably connected to the outer side of the limit rod and limit strips. A second buffer layer is fixedly connected to the bottom of the weight. Guide grooves are formed on both sides of the weight. Fixing holes are formed on both sides of the weight below the guide grooves. A positioning block is provided inside the fixing hole. A symmetrically arranged limit strip is fixedly connected to the end of the positioning block away from the limit rod. A telescopic rod is provided. A spring is fixedly connected to one side of the positioning block and located between the telescopic rods. A first hydraulic rod is fixedly connected to the end of the telescopic rod and the spring away from the positioning block. A second hydraulic rod is symmetrically arranged inside the operating table. A support block located below the weight is fixedly connected to the top of the second hydraulic rod. A fixed frame is fixedly connected to the top of the operating table. Slide grooves are provided on both sides of the fixed frame. A slider is slidably connected inside the slide groove. A connecting plate is symmetrically arranged fixedly connected to the outside of the slider. A tension spring is fixedly connected between the two connecting plates. A positioning plate located inside the fixed frame is fixedly connected between the two sliders. An anti-slip layer is fixedly connected to the side of the positioning plate away from the fixed frame. A weighing sensor body is provided between the two anti-slip layers.

[0007] Preferably, the chamfer on the surface of the positioning block matches the chamfer inside the guide groove, and the diameter of the positioning block matches the inner diameter of the fixing hole.

[0008] Preferably, the inner shape of the weight matches the shape of the combined limiting rod and limiting strip, and the inner dimensions of the weight match the dimensions of the combined limiting rod and limiting strip.

[0009] Preferably, the inner shape of the groove matches the shape of the slider, both being square, and the inner height of the groove matches the height of the slider.

[0010] Preferably, the two positioning plates, the slider and the tension spring are arranged as a group, and there are two groups in total. The two positioning plates, the slider and the tension spring are symmetrically arranged on the left and right sides of the positioning plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, by setting components such as a limiting rod, limiting strip, weight, guide groove, fixing hole, positioning block, telescopic rod, spring, first hydraulic rod, second hydraulic rod, and support block, the mechanical structure of the limiting rod and limiting strip can more simply restrict the direction of the weight. The first hydraulic rod and the second hydraulic rod are set to cooperate, and the pin structure composed of spring, telescopic rod, positioning block and fixing hole realizes the fixing and placement of the weight. The guide groove realizes the accurate positioning of the weight using a simple mechanical principle, reducing the probability of damage. Unlike gear structure, even if wear occurs, it will not affect the normal fixing and placement function of the weight. This solves the problems of existing automated calibration and detection devices for weighing sensors, which have relatively precise structures, weight group switching mechanisms (such as gears, buckles), ball screws, guide rails, etc. are prone to gaps or wear, resulting in a decrease in the stability of the loading force, especially in high-frequency, high-load detection scenarios, where the weight cannot be accurately loaded, and the structure is complex and the maintenance cost is relatively high.

[0013] 2. In this utility model, the fixed frame, sliding groove, slider, connecting plate and tension spring and other components can be used to position the weighing sensor body of various sizes, which is more compatible, simple in structure and lower in maintenance cost. The anti-slip layer can further enhance the fixing effect of the weighing sensor body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Operating platform; 2. Side plate; 3. Top plate; 4. Limiting rod; 5. Limiting strip; 6. Support plate; 7. First buffer layer; 8. Weight; 9. Second buffer layer; 10. Guide groove; 11. Fixing hole; 12. Positioning block; 13. Telescopic rod; 14. Spring; 15. First hydraulic rod; 16. Second hydraulic rod; 17. Support block; 18. Fixing frame; 19. Slide groove; 20. Slider; 21. Connecting plate; 22. Tension spring; 23. Positioning plate; 24. Anti-slip layer; 25. Weighing sensor body. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0020] Please see Figure 1-2 This utility model provides a technical solution:

[0021] An automated calibration and testing device for weighing sensors includes an operating table 1. A symmetrically arranged side plate 2 is fixedly connected to the top of the operating table 1. A top plate 3 is fixedly connected to the top of the side plate 2. A limit rod 4 is fixedly connected to the bottom of the top plate 3. A symmetrically arranged limit strip 5 is fixedly connected to the outer side of the limit rod 4. A support plate 6 is fixedly connected to the bottom of the limit rod 4. A first buffer layer 7 located outside the limit rod 4 is fixedly connected to the top of the support plate 6. A weight 8 is slidably connected to the outer side of the limit rod 4 and the limit strip 5. A second buffer layer 9 is fixedly connected to the bottom of the weight 8. Guide grooves 10 are provided on both sides of the weight 8. Fixing holes 11 are provided on both sides of the weight 8 below the guide grooves 10. A positioning block 12 is provided inside the fixing hole 11. A telescopic rod 13 is fixedly connected to the end of the positioning block 12 away from the limit rod 4. A spring 14 is fixedly connected to the side between the telescopic rods 13. A first hydraulic rod 15 is fixedly connected to the end of the telescopic rods 13 and springs 14 away from the positioning block 12. A second hydraulic rod 16 is symmetrically arranged inside the operating table 1. A support block 17 located below the weight 8 is fixedly connected to the top of the second hydraulic rod 16. A fixed frame 18 is fixedly connected to the top of the operating table 1. Slide grooves 19 are opened on both sides of the fixed frame 18. A slider 20 is slidably connected inside the slide grooves 19. A connecting plate 21 is symmetrically arranged fixedly connected to the outside of the slider 20. A tension spring 22 is fixedly connected between the two connecting plates 21. A positioning plate 23 located inside the fixed frame 18 is fixedly connected between the two sliders 20. An anti-slip layer 24 is fixedly connected to the side of the positioning plate 23 away from the fixed frame 18. A weighing sensor body 25 is provided between the two anti-slip layers 24.

[0022] The chamfer on the surface of the positioning block 12 matches the chamfer inside the guide groove 10, and the diameter of the positioning block 12 matches the inner diameter of the fixing hole 11, which can effectively guide the positioning block 12 and facilitate its entry into the fixing hole 11. The inner shape of the weight 8 matches the shape of the combination of the limiting rod 4 and the limiting strip 5, and the inner dimensions of the weight 8 match the dimensions of the combination of the limiting rod 4 and the limiting strip 5, which can prevent the weight 8 from rotating and shaking during its fall. The inner shape of the slide groove 19 matches the shape of the slider 20, both being square, and the inner height of the slide groove 19 matches the height of the slider 20, making the movement process more stable. Two positioning plates 23, sliders 20 and a tension spring 22 form a group, and there are two groups in total. The two positioning plates 23, sliders 20 and a tension spring 22 are symmetrically arranged on the left and right sides of the positioning plate 23.

[0023] Workflow: When an automated calibration and testing device for a weighing sensor is required, the entire device is powered externally. First, the positioning plate 23 is pulled, and under the action of the slide groove 19 and the slider 20, they are separated. Then, the weighing sensor body 25 is placed between the anti-slip layers 24. Under the contraction force of the connecting plate 21 and the tension spring 22, the weighing sensor body 25 is fixed. Then, according to the testing requirements, the lowermost first hydraulic rod 15 is controlled to retract, causing the positioning block 12 to disengage from the fixing hole 11. Then, under the action of the second hydraulic rod 16 and the support block 17, the lowermost weight 8 is brought into contact with the weighing sensor body 25 for the first weight test. For subsequent weight increases, the first hydraulic rod 15 is retracted upwards according to the pre-set program to place the weight 8. The weight 8 will fall according to the guidance of the limit rod 4 and the limit strip 5. The second buffer layer 9 can... To mitigate collisions between weights 8 and protect them, when weights 8 need to be stored, the first hydraulic rod 15 is extended in reverse order from top to bottom, with the topmost first hydraulic rod 15 extending first. The second hydraulic rod 16 and support block 17 push the weights 8 upward. Under the action of guide groove 10 and positioning block 12, the positioning block 12, guided by telescopic rod 13, compresses spring 14. Then, the positioning block 12 smoothly enters the fixing hole 11, and under the elastic force of spring 14, the topmost weight 8 is fixed. Then, the second hydraulic rod 16 will drive the remaining three weights 8 to fall to the bottom. Then, the control program controls the second first hydraulic rod 15 to extend. After extending, the second hydraulic rod 16 repeatedly pushes the weights 8 upward, fixing the second weight 8. This process is repeated to complete the storage of all weights 8. The principle is simple and significantly reduces maintenance costs.

[0024] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for automatic calibration and detection of load cells, comprising an operating table (1), characterized in that: The top of the operating table (1) is fixedly connected to symmetrically arranged side plates (2), the top of the side plates (2) is fixedly connected to a top plate (3), the bottom of the top plate (3) is fixedly connected to a limit rod (4), the outer side of the limit rod (4) is fixedly connected to symmetrically arranged limit strips (5), the bottom of the limit rod (4) is fixedly connected to a support plate (6), the top of the support plate (6) is fixedly connected to a first buffer layer (7) located outside the limit rod (4), and the limit rod (4) and limit strips (5) are fixedly connected to each other. A weight (8) is slidably connected to the outside of the weight (8). A second buffer layer (9) is fixedly connected to the bottom end of the weight (8). Guide grooves (10) are provided on both sides of the weight (8). Fixing holes (11) located below the guide grooves (10) are provided on both sides of the weight (8). A positioning block (12) is provided inside the fixing hole (11). A telescopic rod (13) is fixedly connected to one end of the positioning block (12) away from the limiting rod (4). A telescopic rod (13) is symmetrically arranged on one side of the positioning block (12). A spring (14) is connected between the telescopic rods (13). The end of the telescopic rod (13) and the spring (14) away from the positioning block (12) is fixedly connected to a first hydraulic rod (15). The inside of the operating table (1) is provided with symmetrically arranged second hydraulic rods (16). The top of the second hydraulic rod (16) is fixedly connected to a support block (17) located below the weight (8). The top of the operating table (1) is fixedly connected to a fixed frame (18). The fixed frame (18) has sliding grooves (19) on both sides. (19) has a slider (20) inside it. The slider (20) is fixedly connected to a symmetrically arranged connecting plate (21) on the outside. A tension spring (22) is fixedly connected between the two connecting plates (21). A positioning plate (23) located inside the fixed frame (18) is fixedly connected between the two sliders (20). An anti-slip layer (24) is fixedly connected to the side of the positioning plate (23) away from the fixed frame (18). A weighing sensor body (25) is provided between the two anti-slip layers (24).

2. The automatic calibration and detection device for load cell according to claim 1, characterized in that: The chamfer on the surface of the positioning block (12) matches the chamfer inside the guide groove (10), and the diameter of the positioning block (12) matches the inner diameter of the fixing hole (11).

3. The automatic calibration and detection device for load cell according to claim 1, characterized in that: The inner shape of the weight (8) matches the shape of the limit rod (4) and the limit strip (5) combined together, and the inner size of the weight (8) matches the size of the limit rod (4) and the limit strip (5) combined together.

4. The automatic calibration and detection device for load cell according to claim 1, characterized in that: The inner shape of the groove (19) matches the shape of the slider (20), both being square, and the inner height of the groove (19) matches the height of the slider (20).

5. The automatic calibration and detection device for load cell according to claim 1, characterized in that: Two positioning plates (23), sliders (20) and a tension spring (22) are arranged as a group, and there are two groups in total. The two positioning plates (23), sliders (20) and a tension spring (22) are symmetrically arranged on the left and right sides of the positioning plate (23).

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