A weighing module which is easy to install and height-adjustable

Abstract

The utility model discloses a kind of weighing module of being convenient for installation, height adjustable, belong to weighing sensor technical field, including base, weighing sensor is installed on the base, the loading end of the weighing sensor is fixedly connected with pressure bolt through thin nut, pressure bolt is sequentially sleeved with top plate and spherical gasket from top to bottom, the top plate is used to directly connect the object to be weighed, height adjusting assembly is also connected on the pressure bolt.The utility model is to solve the technical problem of the height adjustment inaccuracy and the complicated installation of existing weighing module.

Description

Technical Field

[0001] This utility model belongs to the field of weighing sensor technology, specifically relating to a weighing module that is easy to install and has adjustable height. Background Technology

[0002] Weighing modules, as a crucial component of industrial automation and informatization, are key devices integrating weighing sensors, load transfer devices, and mounting connectors. They are widely used in weight monitoring and batching control of equipment such as tanks, reactors, silos, and conveying systems in various industries including manufacturing, logistics, chemicals, food, mining, and steel metallurgy. Their core function is to convert weight signals into electrical signals, providing a precise data foundation for production process control, quality management, and cost accounting.

[0003] Existing weighing modules typically consist of a top plate, a bottom plate, a sensor assembly (including the sensor itself and upper and lower pressure heads), and necessary connecting and limiting structures. Installation often involves initial fixing and height adjustment using support bolts or anti-overturning bolts to meet the installation requirements of different equipment legs and for flatness compensation.

[0004] However, traditional weighing modules have significant drawbacks in terms of height control accuracy and ease of installation: 1) Low weighing accuracy: Many existing modules, such as the Chinese patent CN223295506U which discloses an adjustable-height weighing module, use bolts and height-adjusting nuts to connect the sensor loading end and the connecting plate. The sensor's height can be freely adjusted by turning the height-adjusting nut. However, this weighing module relies on a single adjusting nut to change the height of the connecting plate or top plate. This adjustment method lacks fine-grained control, requiring repeated attempts to adjust the bolt and nut during operation. It is difficult to accurately set and lock the position, and it is prone to loosening due to vibration or load changes, affecting weighing accuracy and long-term stability. 2) Complex installation and maintenance process: Traditional modules typically require on-site assembly and debugging of components (such as sensors and connecting plates), necessitating accurate alignment. This process is time-consuming, labor-intensive, and demands high technical skills from installers. The components are dispersed and not pre-integrated before transportation and installation, leading to numerous on-site assembly steps and increased costs due to installation errors and time commitment. When sensors require repair or replacement, the entire weighing module or its supporting equipment (such as a material tank) often needs to be lifted, which is extremely inconvenient and poses safety risks. Although some designs, such as patent CN223295506U, consider using support frames or other structures, they do not fundamentally simplify this process. Utility Model Content In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a weighing module that is easy to install and has an adjustable height, so as to solve the technical problems of inaccurate height adjustment and complex installation of existing weighing modules.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a weighing module that is easy to install and has an adjustable height, including a base on which a weighing sensor is installed. The loading end of the weighing sensor is fixedly connected to a bearing bolt by a thin nut. A top plate and a spherical washer are sequentially fitted on the bearing bolt from top to bottom. The top plate is used to directly connect to the object being weighed. A height adjustment component is also connected to the bearing bolt.

[0006] Preferably, the height adjustment assembly includes an upper nut and a lower nut. The upper nut is disposed above the top plate and is threadedly connected to the bearing bolt. The lower nut is disposed below the spherical washer and is threadedly connected to the bearing bolt.

[0007] Preferably, a washer is also fitted onto the bearing bolt, and the washer is positioned between the upper nut and the top plate.

[0008] Preferably, the diameter of the bearing bolt is smaller than the hole diameter of the top plate, and the difference between the diameter of the bearing bolt and the hole diameter of the top plate is less than 3 mm; the diameter of the bearing bolt is smaller than the hole diameter of the spherical washer, and the difference between the diameter of the bearing bolt and the hole diameter of the spherical washer is less than 3 mm.

[0009] Preferably, the weighing sensor is mounted on the base plate by a first fixing component, the first fixing component including a pad and a plurality of pad mounting bolts, the pad having a plurality of through holes, each through hole being threaded with a pad mounting bolt.

[0010] Preferably, the first fixing component is connected to the sensor via sensor mounting bolts.

[0011] Preferably, the base plate has a plurality of waist-shaped mounting holes.

[0012] Preferably, there are four waist-shaped mounting holes, located at the four corners of the base plate.

[0013] Preferably, the top plate has mounting holes for connecting the object to be weighed.

[0014] Preferably, the weighing sensor is a shear beam type weighing sensor.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an easy-to-install, height-adjustable weighing module. Through the synergistic action of the bearing bolt and the height adjustment component, precise control of the top plate height is achieved. Simultaneously, the spherical gasket design adaptively adjusts the pressure distribution. Specifically: First, the bearing bolt, as the core component for force transmission, works with the height adjustment component through a threaded structure. Rotating the bearing bolt or adjusting the thin nut changes the relative height of the top plate. This mechanical thread adjustment method, based on the principle of helical transmission, converts rotational motion into linear displacement, achieving height adjustment with micron-level precision. Second, the spherical gasket design utilizes the principle of spherical self-adaptation. When the object being weighed is slightly tilted or the mounting plane is not parallel, the spherical surface automatically adjusts the contact angle to ensure the load acts perpendicularly on the weighing sensor, reducing the impact of lateral forces on measurement accuracy. Finally, the modular integrated design of the pre-assembled sensor, bolt, and adjustment component reduces on-site debugging time. Installation only requires fixing with the base plate, significantly reducing installation complexity.

[0016] Furthermore, the upper and lower nuts form a two-way locking mechanism, based on the self-locking principle of thread friction to prevent the bearing bolt from loosening. The upper nut mainly bears the working load, while the lower nut serves as a backup to prevent loosening, constituting a redundant design. This enhances the stability and reliability of height adjustment, avoids height drift caused by vibration or long-term use, and ensures long-term measurement accuracy.

[0017] Furthermore, the gasket increases the contact area, reduces local pressure, and fills the surface micro-irregularities through material deformation, preventing the nut from damaging the top plate surface, distributing the load evenly, and reducing the impact of stress concentration on measurement accuracy.

[0018] Furthermore, the fit clearance is strictly controlled (<3mm) to ensure that the bolt can only swing slightly in the hole, which allows for angle adaptation while limiting excessive lateral displacement. Under the premise of ensuring flexibility, the vertical force transmission path is maximized, thereby improving measurement repeatability and accuracy.

[0019] Furthermore, the pad provides a rigid support platform, and the pre-tightening force of multiple mounting bolts ensures that the bottom surface of the sensor is fully in contact with the base, avoiding sensor deformation caused by installation plane errors, reducing measurement errors introduced by installation stress, ensuring that the sensor works under ideal stress conditions, and improving the accuracy of basic measurements.

[0020] Furthermore, by using sensor mounting bolts to connect the sensor, the strong fastening property of the threads ensures that the sensor is rigidly fixed to the pad, eliminating relative displacement, improving the overall rigidity of the system, making the sensor more sensitive to load changes, and improving dynamic measurement performance.

[0021] Furthermore, the waist-shaped hole design allows the bolts to be continuously adjusted within a certain range, compensating for the positional error of the equipment installation foundation based on the adjustable support principle. This significantly reduces the machining accuracy requirements of the foundation installation plane, simplifies the installation preparation process, and improves the adaptability and installation efficiency of the module.

[0022] Furthermore, the four-point support layout constitutes a statically determinate and stable structure, ensuring no torsional stress after the base plate is installed and providing optimal anti-overturning stability, making it suitable for harsh working conditions.

[0023] Furthermore, the design of the mounting holes allows the weighed object to be quickly fixed to the top plate by means of bolt or pin connection, providing a flexible, reliable and easy-to-disassemble connection method, shortening equipment connection time and facilitating maintenance.

[0024] Furthermore, the shear beam sensor is based on the principle of separating shear stress and normal stress measurement. When its elastic body is loaded, the shear strain is only related to the shear force and is not sensitive to changes in the point of application. It has the advantages of high precision, resistance to off-center loads, and strong resistance to lateral forces. It is suitable for modular applications with slight off-center loads and can significantly improve the overall accuracy and reliability of the system. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the weighing module of this utility model; Among them, 1-base plate; 2-pad plate; 3-pad plate mounting bolt; 4-weighing sensor; 5-sensor mounting bolt; 6-pressure bearing bolt; 7-upper nut; 8-washer; 9-top plate; 10-spherical washer; 11-lower nut; 12-thin nut. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Example 1 This embodiment provides a weighing module that is easy to install and has an adjustable height, such as... Figure 1 The system includes a base plate 1 with four oblong holes, each through which an expansion bolt passes. The base plate 1 is fixed to the foundation at the application site by the four expansion bolts or anchor bolts. A sensor 4 is fixed to a pad 2 by sensor mounting bolts 5. The pad 2 is mounted on the base plate 1 by pad mounting bolts 3. A pressure-bearing bolt 6 passes through the sensor 4 from bottom to top and is fixed by a thin nut 12. An upper nut 7 and a lower nut 11 are threaded onto the pressure-bearing bolt 6. A top plate 9 is positioned between the upper nut 7 and the lower nut 11, and the top plate 9 is secured by the lower nut 11. The upper nut 7 is fixed to the bearing bolt 6; a washer 8 is provided between the upper nut 7 and the top plate 9; a spherical washer 10 is installed between the lower nut 11 and the top plate 9; there is a gap between the bearing bolt 6 and the top plate 9; there is a gap between the bearing bolt 6 and the spherical washer 10; the bearing bolt 6 passes through the object being weighed (the support leg of the tank) and is fixed to the top plate 9 by the upper nut 7. After removing the upper nut 7, passing the bearing bolt 6 through the support leg hole of the object being weighed, and then reinstalling the upper nut 7, a convenient installation function can be achieved; the height can be freely adjusted by turning the lower nut 11 up and down.

[0029] How to use the weighing module of this utility model: I. Installation Preparation and Inspection Confirm basic conditions: The foundation of the installation point should be flat and firm. It is recommended that the difference in elevation between the installation points be controlled within 3mm, and the levelness of the same foundation surface should preferably be controlled within 1mm / m. In addition, the bearing capacity of the foundation must be greater than the weighing range of the weighing module. Inspection of components: Confirm that the base plate 1, pad plate 2, pad plate mounting bolt 3, sensor 4, sensor mounting bolt 5, bearing bolt 6, upper nut 7, washer 8, top plate 9, spherical washer 10, lower nut 11 and thin nut 12 are complete and in good condition; Prepare tools: Prepare appropriate wrenches, levels, bolts and other installation tools.

[0030] II. Installation and Fixing Fixing the base plate: Securely fix the base plate 1 to the pre-prepared foundation using expansion bolts or anchor bolts through the four oblong holes on the base plate 1. The oblong hole design allows for minor position adjustments during fixing, facilitating alignment; Install the sensor: Fix the load cell 4 to the pad 2 with the sensor mounting bolt 5, and then install the pad 2 onto the base plate 1 with the pad mounting bolt 3. Assemble the core force transmission components: Pass the pressure-bearing bolt 6 through the center hole of the sensor 4 from bottom to top, and lock it in place with the thin nut 12 to ensure that the force can be transmitted correctly.

[0031] III. Height Adjustment and Horizontal Adjustment Initial height adjustment: Rotating the lower nut 11 can change the initial height of the top plate 9, achieving a coarse adjustment of the entire module; Place the top plate and spherical washer: Place the spherical washer 10 on the adjusted lower nut 11, and then install the top plate 9. The spherical washer can adaptively adjust the pressure distribution, compensate for uneven mounting surfaces, and reduce measurement errors caused by off-center loading; Finally, fix the top plate: screw the upper nut 7 into the upper end of the bearing bolt 6, add a washer 8 between it and the top plate 9, and then tighten the upper nut 7 to fix the top plate 9.

[0032] IV. Connecting the object to be weighed Remove the upper nut 7 and washer 8; Pass the top of the bearing bolt 6 through the support leg mounting hole of the object being weighed (such as a tank); Reinstall the gasket 8 and tighten the nut 7 to complete the connection with the object being weighed.

[0033] V. Final Leveling and Inspection Fine height adjustment: By finely adjusting nut 11 again, the levelness of the entire object being weighed (such as a material tank) can be precisely adjusted; Check level and clearance: Use a level to check and confirm the levelness, ensuring that the angle between the top plate 9 and the horizontal plane in both length and width directions is no greater than 0.5°. If the deviation exceeds the tolerance, it can be adjusted by fine-tuning the lower nut 11 or adding stainless steel shims; Confirm that the diameter of the bearing bolt 6 and the hole diameter of the top plate 9 are less than 3mm, and the difference between the diameter of the bearing bolt 6 and the hole diameter of the spherical washer 10 is less than 3mm, to ensure that there is no obstruction and the force is applied smoothly.

[0034] VI. Electrical Connections and System Commissioning Install the junction box: Install the junction box in a location where the sensor cable can be easily connected and away from the scale body, and secure it securely. Do not install the junction box directly on the scale body. Connecting sensor cables: Strictly follow the color codes of the sensor cables to correctly connect the cables of each weighing module to the junction box; Connect the weighing instrument: Connect the output of the junction box to the weighing terminal or weight transmitter.

[0035] System debugging: Perform zero-point calibration (without scale). Use standard weights or materials of known weight to calibrate the measurement range; If multiple modules are used, the angle difference can be adjusted through the junction box to ensure consistent weighing.

[0036] The above content is only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed in this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A weighing module that is easy to install and has an adjustable height, characterized in that, Includes a base (1), on which a weighing sensor (4) is installed. The loading end of the weighing sensor (4) is fixedly connected to a bearing bolt (6) by a thin nut (12). A top plate (9) and a spherical washer (10) are sequentially fitted on the bearing bolt (6) from top to bottom. The top plate (9) is used to connect the object to be weighed. A height adjustment component is also connected to the bearing bolt (6).

2. The weighing module that is easy to install and height-adjustable according to claim 1, characterized in that, The height adjustment assembly includes an upper nut (7) and a lower nut (11). The upper nut (7) is located above the top plate (9) and is threadedly connected to the pressure bolt (6). The lower nut (11) is located below the spherical washer (10) and is threadedly connected to the pressure bolt (6).

3. The weighing module that is easy to install and height-adjustable according to claim 2, characterized in that, A washer (8) is also fitted on the bearing bolt (6), and the washer (8) is placed between the upper nut (7) and the top plate (9).

4. The weighing module that is easy to install and height-adjustable according to claim 1, characterized in that, The difference between the diameter of the bearing bolt (6) and the hole diameter of the top plate (9) is less than 3 mm, and the difference between the diameter of the bearing bolt (6) and the hole diameter of the spherical gasket (10) is less than 3 mm.

5. A weighing module that is easy to install and height-adjustable according to claim 1, characterized in that, The weighing sensor (4) is mounted on the base plate (1) by a first fixing component. The first fixing component includes a pad (2) and several pad mounting bolts (3). Several through holes are provided on the pad (2), and a pad mounting bolt (3) is threaded into each through hole.

6. A weighing module that is easy to install and height-adjustable according to claim 5, characterized in that, The first fixing component is connected to the sensor (4) by the sensor mounting bolt (5).

7. A weighing module that is easy to install and height-adjustable according to claim 1, characterized in that, The base plate (1) has several waist-shaped mounting holes.

8. A weighing module that is easy to install and height-adjustable according to claim 7, characterized in that, The number of waist-shaped mounting holes is four, located at the four corners of the base plate (1).

9. A weighing module that is easy to install and height-adjustable according to claim 1, characterized in that, The top plate (9) has mounting holes for connecting the object to be weighed.

10. A weighing module that is easy to install and height-adjustable according to claim 1, characterized in that, The weighing sensor (4) is a shear beam type weighing sensor.

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