Weighing limiting device and weighing system thereof

Abstract

The utility model relates to a weighing limiting device and a weighing system thereof, and the weighing limiting device comprises a mounting plate, a limiting assembly, a rolling assembly, and a pedestal. The limiting assembly is arranged on the mounting plate in a penetrating manner; the rolling assembly is rotatably mounted on the base; limiting gaps are formed in the transverse direction and the longitudinal direction of the limiting assembly and the rolling assembly. The weighing limiting device can reduce the shaking and inclination of the weighing platform, effectively improves the measurement precision of the weighing device, and protects the weighing device.

Description

Technical Field

[0001] The utility model belongs to the technical field of weighing devices, and in particular relates to a weighing limit device and a weighing system thereof. Background Art

[0002] Weighing systems often use column-type load cells as weighing devices. These cells typically feature a double-spherical rocker structure. While this design offers numerous advantages, such as compactness, strong overload capacity, and fast dynamic response, if the weighing system lacks a suitable limit stop, the entire column-type load cell will become unstable, failing to ensure the stability and reliability of the weighing system itself. Excessive sway or tilt in the weighing platform of a weighing system can cause weighing errors and reduce measurement accuracy. Furthermore, excessive movement can cause the weighing system to collide with other structures, potentially damaging the weighing system. More seriously, for large or heavy equipment, such as large truck scales or weighing systems on production lines, excessive load cell swing without appropriate limit stops can even lead to serious accidents such as the scale tipping over. Current column-type load cell weighing systems often utilize a universal joint tie rod design. This module has specific directional requirements for installation and can only provide position limits in certain directions. Consequently, the position limits and anti-tilt protection are ineffective, making it difficult to ensure the load cell's measurement accuracy and posing safety risks.

[0003] Therefore, how to provide a limit device that can reduce the shaking and tilting of the weighing platform, effectively improve the measurement accuracy of the weighing device, and protect the weighing device is an urgent problem to be solved in this field. Utility Model Content

[0004] In order to solve at least one of the above technical problems, the present invention provides a weighing limit device, comprising: a mounting plate, a limit assembly, a rolling assembly and a base;

[0005] A limit assembly is provided on the mounting plate;

[0006] A rolling assembly is rotatably mounted on the base;

[0007] A limited gap is set between the limit component and the rolling component in the horizontal and vertical directions.

[0008] Furthermore, the limiting components are symmetrically arranged on both sides of the rolling component.

[0009] Furthermore, the limiting gap between the limiting assembly and the rolling assembly is smaller than the maximum gap of elastic deformation of the weighing sensor.

[0010] Furthermore, the limiting clearance between the limiting assembly and the rolling assembly is 1-9 mm, and the maximum clearance of the elastic deformation of the weighing sensor is 2-15 mm;

[0011] Furthermore, the rolling assembly includes: a rotating shaft, a rotating support member and a limiting roller;

[0012] A rotating support member is provided between the rotating shaft and the limiting roller;

[0013] The limiting roller is rotatably arranged on the rotating shaft.

[0014] Furthermore, the rotating support member includes: rotating bearings arranged at both ends of the limiting roller, and a roller buffer member arranged between the rotating bearings and the base.

[0015] Furthermore, the limiting roller includes: protrusions symmetrically arranged on both sides and a waist-shaped groove arranged in the center.

[0016] Furthermore, the base includes: a limiting platform and a reinforcing plate;

[0017] The limit platforms are symmetrically arranged above both sides of the base;

[0018] Reinforcement plates are symmetrically arranged on both sides of the limit platform;

[0019] The rolling assembly is rotatably mounted between symmetrically arranged limit platforms.

[0020] Furthermore, the base also includes: limit adjustment parts arranged on both sides of the base.

[0021] A weighing system, comprising: a limit device and a weighing sensor;

[0022] The limit device is arranged on one side of the weighing sensor;

[0023] The limiting device is any one of the above-mentioned weighing limiting devices.

[0024] In this embodiment, a weighing limit device is provided. When in use, a mounting plate is connected to a weighing platform of an upper weighing device. A limit assembly is provided through the mounting plate and a horizontal and vertical limit gap is set between the limit roller and the limit roller. The sway and tilt of the weighing platform are limited to the limit gap, thereby ensuring the stability of the weighing platform or the object being measured and reducing the sway and tilt distance of the weighing platform. Even if the weighing platform swings too much, it can prevent the weighing platform from overturning, protect the weighing sensor and other accessories, and improve the service life and safety of the weighing device. At the same time, when the weighing platform is subjected to external force swing or the object being measured is weighed, there will be dynamic impacts in all directions. The existence of this limit gap allows the weighing sensor to move freely within a specific range, avoiding measurement errors caused by uneven force and position offset of the object during the weighing process, improving the measurement accuracy of the weighing device in various different environments, and effectively reducing the interference of vibration and impact on the weighing result even in scenarios with certain vibration or impact. The rolling assembly is mounted on the base and can rotate flexibly. When impacted, it can turn, converting the impact force into kinetic energy of the limit assembly, thus providing a better buffering effect. In summary, the weighing limit device provided in this embodiment can reduce the shaking and tilting of the weighing platform, effectively improve the measurement accuracy of the weighing device, and protect the weighing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be derived based on the structures shown in these drawings without inventive effort. In the drawings, the same parts are marked with the same reference numerals. The drawings are not drawn to scale.

[0026] Figure 1 This is a schematic diagram of an embodiment of a weighing limit device of the present utility model;

[0027] Figure 2 This is a cross-sectional view of an embodiment of a weighing limit device of the present utility model;

[0028] Figure 3 This is a schematic diagram of an embodiment of a limit roller of a weighing limit device of the present invention;

[0029] Figure 4 The figure is a schematic diagram of an embodiment of a base of a weighing limit device of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0032] It should also be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly. In addition, if the embodiments of the present invention involve descriptions such as "first, second", "S1, S2", "step one, step two", etc., such descriptions are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that anything that does not violate the key points of the utility model under the technical concept of the utility model should be included in the scope of protection of the utility model.

[0033] The utility model provides a weighing limit device, referring to Figure 1-2 , including: a mounting plate 1, a limiting component 2, a rolling component 3 and a base 4;

[0034] The limiting component 2 is provided on the mounting plate 1 through the mounting plate 1;

[0035] The rolling assembly 3 is rotatably mounted on the base 4;

[0036] A limiting gap is set between the limiting component 2 and the rolling component 3 in the horizontal and vertical directions.

[0037] In this embodiment, a weighing limit device of the present invention is provided. When in use, the mounting plate is connected to the weighing platform of the weighing device, the limit assembly is arranged through the mounting plate, and a horizontal and vertical limit gap is set between the limit roller and the limit rod. When the weighing platform shakes or tilts, it drives the limit rod to move in the same direction. At this time, the rotating rolling assembly abuts against the limit assembly to play a limiting role. On the one hand, there is a certain buffering effect to avoid a strong collision between the limit assembly and the rolling assembly, which may cause damage to the device; on the other hand, the shaking or tilting of the weighing platform can be limited to the horizontal and vertical limit gaps, thereby ensuring the stability of the weighing platform and the object to be measured, and reducing the shaking and tilting of the weighing platform; even if the weighing platform swings too much, it can prevent the weighing platform from overturning, and prevent the weighing sensor and other accessories from being damaged due to overturning, thereby improving the service life and safety of the weighing device. At the same time, when the weighing platform is subjected to external force swing or the object to be measured is weighed, there will be dynamic impacts in all directions. The existence of this limit gap allows the weighing sensor to move freely within a specific range, avoiding the measurement error caused by uneven force and position offset of the weighing sensor during the weighing process, improving the measurement accuracy of the weighing device in various environments, and even in scenarios with certain vibrations or impacts, it can effectively reduce the interference of vibrations and impacts on the weighing results. The rolling assembly is installed on the base and can rotate flexibly. It can rotate when impacted, converting the impact force into the kinetic energy of the rolling assembly, playing a better buffering role. In summary, the weighing limit device provided in this embodiment can reduce the shaking and tilting of the weighing platform, effectively improve the measurement accuracy of the weighing device, and protect the weighing device.

[0038] Preferably, the limiting components 2 are symmetrically arranged on both sides of the rolling component 3.

[0039] In this embodiment, the limiting components include two, preferably cylindrical limiting rods, which can be symmetrically arranged on both sides of the rolling component by welding or other means. During the weighing process or when subjected to a lateral impact, the limiting components on both sides can contact the rolling component. During the rolling process of the rolling component, the limiting rods abut against each other to play a limiting role and achieve a better limiting effect.

[0040] Preferably, the limiting gap between the limiting assembly 2 and the rolling assembly 3 is smaller than the maximum gap of elastic deformation of the weighing sensor.

[0041] In this embodiment, when the object to be measured moves to the weighing platform, it will generate lateral or longitudinal impact forces on the weighing sensor, and these impact forces will directly spread to the weighing limit device. At this time, since the limiting gap between the limiting component and the rolling component is smaller than the maximum gap of elastic deformation of the weighing sensor, the limiting component will first contact the rolling component, and most of the impact force will be absorbed or dispersed by the limiting component and the rolling component, thereby avoiding the weighing sensor from bearing excessive unexpected loads, reducing the risk of damage to the weighing sensor due to overload, and extending the service life of the weighing device. It is worth noting that the maximum gap of elastic deformation of the weighing sensor mentioned here refers to the maximum spacing of elastic deformation generated by the weighing sensor when it is impacted. The weighing sensor has a pre-set measurement accuracy within the maximum gap range of elastic deformation and can return to its initial position after the impact ends. For example, the limiting gap between the limiting assembly and the rolling assembly is 3 mm, and the maximum elastic deformation gap of the weighing sensor is 5 mm; at this time, even if the weighing sensor is impacted and produces an offset exceeding the maximum elastic deformation gap of the weighing sensor, that is, greater than 5 mm, since the limiting gap between the limiting assembly and the rolling assembly is 3 mm, the maximum offset of the weighing sensor caused by the impact is limited to within 3 mm, effectively avoiding the weighing sensor from exceeding the maximum elastic deformation gap due to the impact, thereby effectively avoiding damage to the weighing sensor and improving the measurement accuracy of the weighing sensor.

[0042] Preferably, reference Figure 2 The rolling assembly 3 includes a rotating shaft 31, a rotating support member 32 and a limiting roller 33;

[0043] The rotating support member 32 is provided between the rotating shaft 31 and the limiting roller 33;

[0044] The limiting roller 33 is rotatably arranged on the rotating shaft 31. Preferably, the limiting roller 33 is detachably mounted on the rotating shaft 31 and the rotating support member 32.

[0045] In this embodiment, the rotating shaft is used to support the rotating support member and the limiting roller, and plays the task of supporting the load. The rotating support member is arranged between the rotating shaft and the limiting roller, and converts the friction between the limiting roller and the rotating shaft into the friction between the limiting roller and the rotating support member, thereby improving the service life of the limiting roller as a key component. For example, the rotating support member is made of wear-resistant, high-strength materials, such as bearing steel or alloy steel, to ensure that friction and wear can be reduced during the rotation process, and the smoothness and accuracy of the rotation are improved. The limiting roller is rotatably arranged on the rotating shaft. The limiting roller can rotate flexibly and can rotate when impacted, converting the impact force into the kinetic energy of the limiting roller, thereby playing a better buffering role. The limiting roller, the rotating shaft and the rotating support member are detachably installed. This detachable installation design allows the limiting roller to be easily replaced or repaired when needed, thereby improving the maintainability and service life of the rolling assembly.

[0046] Preferably, the rotary support member includes: rotary bearings arranged at both ends of the limiting roller, and a roller buffer member arranged between the rotary bearings and the base.

[0047] In this embodiment, the rotary bearing is used to further reduce friction and wear of the limiting roller, improving the smoothness and precision of rotation, and extending the service life of the entire device. The roller buffer is used to reduce or even offset lateral impact transmitted from the limiting assembly, thereby reducing the wobble and tilt of the weighing device and improving the measurement accuracy of the weighing device. It is understood that the roller buffer can be a spring, a rubber cushion, or other element with elastic reset and buffering functions.

[0048] Preferably, reference Figure 3 The limiting roller 32 includes: protrusions 32a symmetrically arranged on both sides and a waist-shaped groove 32b arranged in the center.

[0049] In this embodiment, protrusions are symmetrically provided on both sides of the limiting roller, so that the limiting assembly is restricted between the two protrusions when subjected to a lateral impact; a waist-shaped groove is provided in the center of the limiting roller, which cooperates with the limiting assembly so that the limiting gaps between the limiting assembly and the limiting roller are equal in all directions; when the weighing platform is subjected to external force swing or the object to be measured is weighed, no matter which direction the impact is, the limiting roller can fully contact the limiting assembly and be evenly stressed on the arc surface of the waist-shaped groove. This uniform force not only helps to maintain the stability of the weighing platform and improve the measurement accuracy of the weighing device, but also disperses friction, thereby reducing the wear of the limiting assembly and the limiting roller, and extending the service life of the limiting roller and the limiting assembly. More preferably, a buffer pad is provided on the waist-shaped groove to achieve a better buffering effect.

[0050] More preferably, refer to Figure 4 , the base 4 includes: a limiting platform 41 and a reinforcing plate 42;

[0051] The limiting platforms 41 are symmetrically arranged above both sides of the base 4;

[0052] The reinforcing plates 42 are symmetrically arranged on both sides of the limiting platform 41;

[0053] The rolling assembly 3 is rotatably mounted between symmetrically arranged limit platforms 41 .

[0054] In this embodiment, the rolling assembly is mounted between symmetrically arranged limit platforms, providing a stable support platform for the rolling assembly. The symmetrical arrangement of the limit platforms not only enhances the structural balance but also helps to disperse the stress and vibration generated by the rolling assembly during operation. The reinforcement plates are symmetrically arranged on both sides of the limit platforms, further enhancing the overall strength and rigidity of the base, enabling the base to better withstand external loads and impacts, ensuring the stable operation of the weighing limit device in complex environments.

[0055] Preferably, the base 4 further includes: position limiting adjustment members provided on both sides of the base.

[0056] In this embodiment, the base further includes adjustment members disposed on both sides for adjusting the horizontal position of the base and the rolling assembly, thereby improving the adjustability of the weighing limit device. For example, the limit adjustment members are limit screws symmetrically disposed on either side of the base. By adjusting the limit screws in and out, the limit base and the rolling assembly can be translated and rotated in all directions within a plane, thereby improving the adjustability and maintainability of the entire weighing limit device.

[0057] A weighing system includes a limit device and a weighing sensor.

[0058] The limit device is arranged on one side of the weighing sensor;

[0059] The limiting device is any one of the above-mentioned weighing limiting devices.

[0060] In this embodiment, a weighing system is provided, wherein a limit device is disposed on one side of a weighing sensor. When the weighing system is being weighed or subjected to other external forces, the limit device acts as a limiter and buffer for the weighing sensor, thereby protecting the weighing sensor and other weighing system accessories, reducing sway and tilt of the weighing system, effectively improving the measurement accuracy of the weighing system, and protecting the weighing system. More preferably, the weighing system includes two weighing sensors, and the weighing limit device is disposed between the two weighing sensors. When the elastic deformation of the weighing sensors exceeds the maximum gap, the limit device provides buffering and physical limitation, thereby protecting the sensors from damage and ensuring the accuracy of the measurement results.

[0061] The above-mentioned weighing system is created based on the above-mentioned weighing limit device. Its technical effects and technical features are not described in detail here. The above-mentioned embodiments only express several implementation methods of the utility model. The description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all fall within the scope of protection of the utility model.

Claims

1. A weighing limit device, characterized in that: include: Mounting plate, limit assembly, rolling assembly and base; A limit assembly is provided on the mounting plate; A rolling assembly is rotatably mounted on the base; A limited gap is set between the limit component and the rolling component in the horizontal and vertical directions.

2. The weighing limit device according to claim 1, characterized in that: The limiting components are symmetrically arranged on both sides of the rolling component.

3. The weighing limit device according to claim 1, characterized in that: The limiting gap between the limiting assembly and the rolling assembly is smaller than the maximum gap of the elastic deformation of the weighing sensor.

4. The weighing limit device according to claim 3, characterized in that: The limiting gap between the limiting component and the rolling component is 1-9 mm, and the maximum gap of the elastic deformation of the weighing sensor is 2-15 mm.

5. The weighing limit device according to claim 1, characterized in that: The rolling assembly includes: a rotating shaft, a rotating support and a limiting roller; A rotating support member is provided between the rotating shaft and the limiting roller; The limiting roller is rotatably arranged on the rotating shaft.

6. The weighing limit device according to claim 5, characterized in that: The rotary support component comprises: rotary bearings arranged at both ends of the limiting roller, and a roller buffer component arranged between the rotary bearings and the base.

7. The weighing limit device according to claim 5, characterized in that: The limiting roller comprises: protrusions symmetrically arranged on both sides and a waist-shaped groove arranged in the center.

8. The weighing limit device according to any one of claims 1 to 7, characterized in that: Base, including: limit table and reinforcement plate; The limit platforms are symmetrically arranged above both sides of the base; Reinforcement plates are symmetrically arranged on both sides of the limit platform; The rolling assembly is rotatably mounted between symmetrically arranged limit platforms.

9. The weighing limit device according to claim 8, characterized in that: The base also includes: limit adjustment parts arranged on both sides of the base.

10. A weighing system, characterized in that: include: Limit device and weighing sensor; the limit device is arranged on one side of the weighing sensor; The limiting device is the weighing limiting device described in any one of claims 1 to 9.

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