A load cell protection device

Abstract

The application provides a kind of weighing sensor protection device, belongs to weighing sensor technical field, including protection mounting plate, the fixed pedestal is installed on the protection mounting plate, the weighing sensor body is arranged above the fixed pedestal, the support platform is installed on the protection mounting plate, the protection mounting plate is connected with the fixed pedestal by fixed bolt, the support platform and the fixed pedestal are symmetrically distributed in the two sides of protection mounting plate, the central axis of protection mounting plate and weighing sensor body is collinear, the support platform and the fixed pedestal are located on the two sides of weighing sensor body respectively, the surface of the support platform protrudes from the protection mounting plate, the middle part of the weighing sensor body is provided with a hollow structure, the thickness of the middle part of weighing sensor body is less than the thickness of the two sides of weighing sensor body.The application solves the existing weighing sensor protection device.

Description

Technical Field

[0001] This utility model relates to the field of weighing sensor technology, and more specifically, to a weighing sensor protection device. Background Technology

[0002] The main function of a load cell is to convert the weight of an object into an electrical signal, providing real-time weight data to the system. However, existing load cells have some shortcomings. For example, utility model patent CN216283902U discloses a load cell protection device, including a protective bracket containing a load cell. An upper buffer plate is fixedly mounted on the upper end of the load cell, and a weighing pan is mounted on the upper buffer plate. The weighing pan is connected to the protective bracket by fixing bolts. A positioning pin is also provided on the weighing pan, with its end close to an adjustable bolt. The adjustable bolt is mounted on the protective bracket and can be adjusted vertically to adjust the distance between the end of the positioning pin and the adjustable bolt. This device aims to prevent large impacts on the load cell during overload or to protect the load cell from exceeding its measuring range.

[0003] While the aforementioned sensors offer protective functions, during the weighing process, the item being weighed often impacts the weighing pan at a certain speed, or a person's weight presses on the item, transmitting the weight to the load cell through the weighing pan. These actions can cause the load cell to momentarily exceed its weighing range, resulting in damage. Using a larger range sensor can increase the weighing range and reduce the damage caused by these actions, but it reduces weighing accuracy, making it impossible to accurately measure the item and meet weighing requirements. Utility Model Content

[0004] The purpose of this utility model is to address the current problem that during the weighing process, when the item being weighed is placed, it usually impacts the weighing tray directly at a certain speed, or the weight of the person pressing on the item is transmitted to the weighing sensor through the weighing tray, which can easily damage the sensor.

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

[0006] A load cell protection device is provided to improve the above-mentioned problems.

[0007] The application is as follows:

[0008] The device includes a protective mounting plate, on which a fixed base is mounted. A load cell body is positioned above the fixed base. A support platform is mounted on the protective mounting plate. The load cell body is connected to the fixed base via fixing bolts.

[0009] As a preferred technical solution of this application, the support platform and the fixed base are symmetrically distributed on both sides of the protective mounting plate, and the central axes of the protective mounting plate and the weighing sensor body are collinear.

[0010] As a preferred technical solution of this application, the support platform and the fixed base are located on both sides of the weighing sensor body, and there is a gap between the weighing sensor body and the support platform.

[0011] As a preferred technical solution of this application, the support platform protrudes from the surface of the protective mounting plate.

[0012] As a preferred technical solution of this application, the weighing sensor body has a hollow structure in the middle, and the thickness of the middle part of the weighing sensor body is less than the thickness of the two sides of the weighing sensor body.

[0013] As a preferred technical solution of this application, two fixing bolts are provided, and the fixing bolts are threadedly connected to both the protective mounting plate and the fixing base.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] 1. The device is equipped with a load cell and a support platform, and there is a certain distance between the load cell and the support platform. If the load is normal, the load cell does not contact the support platform, and the measured force passes through the load cell without affecting its performance. When the load is too large or when a heavy object is placed, the load cell contacts the support platform, and the force exceeding the measurement range of the load cell is transmitted to the support platform, thus protecting the sensor.

[0017] 2. The device is equipped with a support platform and a mounting plate. The protection capability can be controlled by adjusting the gap between the support platform and the sensor on the mounting plate at the bottom of the sensor. Different bottom mounting plates with different protection capabilities can be designed and manufactured according to actual needs, which enhances the applicability of the device and solves the problem that although large-range sensors can increase the weighing range of the sensor and thus reduce the damage to the sensor caused by the above operations, the weighing accuracy will be reduced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0020] Figure 3 This is a side view of the structure of this utility model.

[0021] The diagram shows: 1. Protective mounting plate; 2. Support platform; 3. Fixed base; 4. Weighing sensor body; 5. Fixing bolts. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0023] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Example 1:

[0028] like Figures 1-3As shown, this embodiment proposes a load cell protection device, including a protective mounting plate 1, a fixed base 3 mounted on the protective mounting plate 1, a load cell body 4 disposed above the fixed base 3, and a support platform 2 mounted on the protective mounting plate 1. The load cell body 4 is connected to the fixed base 3 by fixing bolts 5. The fixing bolts 5 are used to fix the load cell body 4 and the fixed base 3 to prevent the load cell body 4 from shifting. If the load is normal, the load cell body 4 does not contact the support platform 2, and the measured force is entirely transmitted through the load cell body 4, thus not affecting the performance of the load cell. If the load is too large or the instantaneous impact is too large when placing a heavy object, the load cell body 4 comes into contact with the support platform 2, and the force exceeding the measurement range of the load cell body 4 is transmitted to the support platform 2, thus protecting the sensor.

[0029] Example 2:

[0030] The following section provides a further description of the scheme in Example 1, focusing on its specific working method. See the description below for details:

[0031] like Figure 1 As shown, in a preferred embodiment, based on the above method, the support platform 2 and the fixed base 3 are symmetrically distributed on both sides of the protective mounting plate 1. The support platform 2 and the fixed base 3 are used to support both sides of the support platform 2 and the fixed base 3. The central axis of the protective mounting plate 1 and the weighing sensor body 4 are collinear, ensuring the overall stability of the device.

[0032] like Figure 3 As shown, in a preferred embodiment, based on the above method, the support platform 2 and the fixed base 3 are located on both sides of the weighing sensor body 4, and there is a gap between the weighing sensor body 4 and the support platform 2. The gap between the weighing sensor body 4 and the support platform 2 can cooperate with the support platform 2 to achieve a protective function when the load is too large.

[0033] like Figure 2 As shown, in a preferred embodiment, based on the above method, the support platform 2 protrudes from the surface of the protective mounting plate 1 to ensure that the support platform 2 can stably support the weight sensor body 4.

[0034] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, a hollow structure is further provided in the middle of the weighing sensor body 4, and the thickness of the middle part of the weighing sensor body 4 is less than the thickness of the two sides of the weighing sensor body 4, so that the weighing sensor body 4 can contact the support platform 2 after being pressed, and realize the auxiliary support function.

[0035] like Figure 2As shown, in a preferred embodiment, based on the above method, two fixing bolts 5 are further provided. The fixing bolts 5 are threadedly connected to both the load cell body 4 and the fixing base 3. Subsequently, the position of the fixing base 3 can be adjusted by adjusting the fixing bolts 5, so as to adjust the position of the load cell body 4 and thus adjust the protection effect of the device.

[0036] Specifically, when using this weighing sensor protection device: (e.g.) Figure 1 and Figure 2 As shown, by adjusting the gap between the support platform 2 on the protective mounting plate 1 and the weighing sensor body 4 by fixing bolt 5, the support platform 2 can play a positive role in resisting impact and overload protection for the weighing sensor body 4.

[0037] like Figure 3 As shown, when the load cell body 4 is under normal stress, it does not contact the support platform 2, and the measured force passes entirely through the load cell body 4, thus not affecting its performance. When the load cell body 4 is overloaded, the stress point contacts the support platform 2, and the force exceeding the measurement range of the load cell body 4 is transmitted to the support platform 2, thus protecting the sensor.

[0038] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A weighing sensor protection device, comprising a protective mounting plate (1), characterized in that, A fixed base (3) is installed on the protective mounting plate (1), and a weighing sensor body (4) is provided above the fixed base (3). A support platform (2) is installed on the protective mounting plate (1), and the weighing sensor body (4) is connected to the fixed base (3) by fixing bolts (5).

2. The weighing sensor protection device according to claim 1, characterized in that, The support platform (2) and the fixed base (3) are symmetrically distributed on both sides of the protective mounting plate (1), and the central axis of the protective mounting plate (1) and the weighing sensor body (4) are collinear.

3. The weighing sensor protection device according to claim 1, characterized in that, The support platform (2) and the fixed base (3) are located on both sides of the weighing sensor body (4), and there is a gap between the weighing sensor body (4) and the support platform (2).

4. The weighing sensor protection device according to claim 1, characterized in that, The support platform (2) protrudes from the surface of the protective mounting plate (1).

5. A weighing sensor protection device according to claim 1, characterized in that, The weighing sensor body (4) has a hollow structure in the middle, and the thickness of the middle part of the weighing sensor body (4) is less than the thickness of the two sides of the weighing sensor body (4).

6. A weighing sensor protection device according to claim 1, characterized in that, There are two fixing bolts (5), and the fixing bolts (5) are threadedly connected to the weighing sensor body (4) and the fixing base (3).

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