Weighing sensor with micro-vibration suppression structure

Abstract

The utility model discloses a weighing sensor with a micro-vibration suppression structure, which relates to the technical field of weighing sensors and comprises a bottom plate, a weighing sensor assembly and a bearing portion, a protection assembly is mounted on the upper side of the bottom plate, and the weighing sensor assembly is mounted on the upper side of the protection assembly. A lifting plate is arranged on the upper side of the weighing sensor assembly, a bearing part is installed on the upper side of the lifting plate, and the bearing part comprises a damping rubber pad, a bearing plate, a rubber block and a buffer spring. According to the weighing sensor with the micro-vibration suppression structure, the interior of the damping rubber pad is of a honeycomb structure, so that micro-vibration can be absorbed and buffered, vibration transmitted to the precision weighing sensor is reduced, and the influence of the micro-vibration on the measurement precision is reduced; buffer springs connected with the bearing plate or the lifting plate are arranged in the rubber blocks on the lower sides of the left sides and the right sides of the bearing plate and the lifting plate, the multiple buffer springs can attenuate vibration, and the multi-layer vibration isolation effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of weighing sensor technology, specifically a weighing sensor with a micro-vibration suppression structure. Background Technology

[0002] A load cell is essentially a device that converts a mass signal into a measurable electrical signal output. Load cells are classified into eight types according to their conversion method: photoelectric, hydraulic, electromagnetic, capacitive, magnetic pole changing, vibration, gyroscopic, and resistance strain gauge.

[0003] While existing load cells can perform weighing operations, in actual use, there is an impact force when placing the item to be weighed. The impact force causes the sensor to vibrate, which in turn affects the reading accuracy, resulting in large fluctuations and deviations in the weighing results. Summary of the Invention

[0004] The purpose of this invention is to provide a weighing sensor with a micro-vibration suppression structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a weighing sensor with a micro-vibration suppression structure, comprising a base plate, a weighing sensor assembly, and a support portion. A protective assembly is installed on the upper side of the base plate, and the weighing sensor assembly is installed on the upper side of the protective assembly. A lifting plate is provided on the upper side of the weighing sensor assembly, and the support portion is installed on the upper side of the lifting plate. The support portion includes a shock-absorbing rubber pad, a support plate, a rubber block, and a buffer spring. Two shock-absorbing rubber pads are symmetrically arranged, and the bottom and top surfaces of the shock-absorbing rubber pads are fixedly connected to the lifting plate and the support plate, respectively. Rubber blocks are fixed on the lower left and right sides of the support plate and the lifting plate, and the rubber blocks have a hollow structure. A buffer spring is provided in the middle of the interior of the rubber block, and the top surface of the buffer spring is fixedly connected to the support plate or the lifting plate.

[0006] Furthermore, both sides of the base plate are provided with positioning and mounting holes, and both the base plate and the bearing plate are rectangular plates.

[0007] Furthermore, the protective component includes a viscoelastic damper and a first rubber pad, with the first rubber pad fixed to the lower sides of both sides of the viscoelastic damper.

[0008] Furthermore, the protective component also includes a first fixing plate, which is adhered to the lower side of the first rubber pad, and the two first fixing plates are fixedly connected to the base plate.

[0009] Furthermore, the weighing sensor assembly includes a precision weighing sensor, a second rubber pad, and a second fixing plate. The second rubber pad is fixed to the lower sides of both sides of the precision weighing sensor, and the second fixing plate is adhered to the lower side of the second rubber pad.

[0010] Furthermore, the weighing sensor assembly also includes a first elastic body and a second elastic body. The first elastic body is fixed on both sides below the two second fixing plates, and the second elastic body is provided on the inner side of the first elastic body.

[0011] Furthermore, the shock-absorbing rubber pad has an "L" shaped structure, and the interior of the shock-absorbing rubber pad has a honeycomb structure.

[0012] This utility model provides a weighing sensor with a micro-vibration suppression structure, which has the following beneficial effects:

[0013] This utility model is equipped with a bearing part, and an "L"-shaped shock-absorbing rubber pad is used to connect the lifting plate and the bearing plate. The internal structure of the shock-absorbing rubber pad is honeycomb, which can absorb and buffer micro-vibrations, reduce the vibration transmission to the precision weighing sensor, and thus reduce the impact of micro-vibrations on measurement accuracy. The rubber blocks on the lower left and right sides of the bearing plate and the lifting plate are equipped with buffer springs connected to the bearing plate or the lifting plate. Several buffer springs can attenuate vibration and play a multi-layer vibration isolation role.

[0014] This utility model is equipped with a weighing sensor assembly. The lower sides of both sides of the precision weighing sensor are provided with second rubber pads, which can play a certain role in flexible buffering. The viscoelastic damper is located on the lower side of the precision weighing sensor and can play a role in energy dissipation and vibration reduction. The first elastic body of the outer layer on the lower side of both ends of the precision weighing sensor uses a relatively hard elastic body to bear the main weighing load, while the second elastic body of the inner layer uses a relatively soft elastic body with good damping characteristics to absorb micro-vibration energy. Thus, while ensuring weighing accuracy, it can effectively isolate and attenuate micro-vibrations and improve reading accuracy. Attached Figure Description

[0015] Figure 1 This is an exploded structural diagram of a weighing sensor with a micro-vibration suppression structure according to the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of a weighing sensor with a micro-vibration suppression structure according to the present invention;

[0017] Figure 3 This is a schematic diagram of the second elastic body structure of a weighing sensor with a micro-vibration suppression structure according to the present invention;

[0018] Figure 4 This is a schematic diagram of the buffer spring structure of a weighing sensor with a micro-vibration suppression structure according to the present invention.

[0019] In the diagram: 1. Base plate; 2. Positioning and mounting holes; 3. Protective components; 301. Viscoelastic damper; 302. First rubber pad; 303. First fixing plate; 4. Weighing sensor assembly; 401. Precision weighing sensor; 402. Second rubber pad; 403. Second fixing plate; 404. First elastomer; 405. Second elastomer; 5. Lifting plate; 6. Bearing unit; 601. Shock-absorbing rubber pad; 602. Bearing plate; 603. Rubber block; 604. Buffer spring. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] like Figure 1 and Figure 3 As shown, a load cell with a micro-vibration suppression structure includes a base plate 1, a load cell assembly 4, and a support part 6. A protective component 3 is installed on the upper side of the base plate 1, and the load cell assembly 4 is installed on the upper side of the protective component 3. The protective component 3 includes a viscoelastic damper 301 and a first rubber pad 302. The first rubber pad 302 is fixed to the lower side of both sides of the viscoelastic damper 301. The protective component 3 also includes a first fixing plate 303. The first fixing plate 303 is bonded to the lower side of the first rubber pad 302. The two first fixing plates 303 are fixedly connected to the base plate 1. The load cell assembly 4 includes a precision load cell 401, a second rubber pad 402, and a second fixing plate 403. The second rubber pad 402 is fixed to the lower side of both sides of the precision load cell 401, and the second fixing plate 403 is bonded to the lower side of the second rubber pad 402. The load cell assembly 4 also includes a first elastic body 404 and a second elastic body 405. A first elastic body 404 is fixed on both sides of the lower part of the fixed plate 403, and a second elastic body 405 is provided on the inner side of the first elastic body 404. A second rubber pad 402 is provided on the lower side of both sides of the precision weighing sensor 401, which can play a certain flexible buffering role. A first rubber pad 302 is also provided on the lower side of both sides of the viscoelastic damper 301. It is located on the lower side of the precision weighing sensor 401 and can play the role of energy dissipation and vibration reduction. The precision weighing sensors 401 are all parallel beam type weighing sensors. During the weighing process, the reading of the viscoelastic precision weighing sensor 401 may be unstable due to impact or vibration. At this time, the first elastic body 404 on the lower side of both ends of the precision weighing sensor 401 uses a harder elastic body to bear the main weighing load, and the second elastic body 405 on the inner side uses a softer elastic body with good damping characteristics to absorb micro-vibration energy. Thus, while ensuring weighing accuracy, it can effectively isolate and attenuate micro-vibration and improve reading accuracy.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, a lifting plate 5 is provided on the upper side of the weighing sensor assembly 4, and a bearing part 6 is installed on the upper side of the lifting plate 5. The bearing part 6 includes a shock-absorbing rubber pad 601, a bearing plate 602, a rubber block 603, and a buffer spring 604. Two shock-absorbing rubber pads 601 are symmetrically arranged, and the bottom and top surfaces of the shock-absorbing rubber pads 601 are fixedly connected to the lifting plate 5 and the bearing plate 602, respectively. Rubber blocks 603 are fixed on the lower sides of both the left and right sides of the bearing plate 602 and the lifting plate 5. The rubber blocks 603 have a hollow structure, and a buffer spring 604 is provided in the middle of the rubber block 603. The top surface of the buffer spring 604 is fixedly connected to the bearing plate 602 or the lifting plate 5. The shock-absorbing rubber pad 601 has an "L" shaped structure, and the interior of the shock-absorbing rubber pad 601 is honeycomb-shaped. The structure includes positioning mounting holes 2 on both sides of the base plate 1, and both the base plate 1 and the support plate 602 are rectangular plates. The positioning mounting holes 2 on both sides of the base plate 1 facilitate the installation of the base plate 1. The shock-absorbing rubber pad 601 with an "L" shaped structure is used to connect the lifting plate 5 and the support plate 602. The internal structure of the shock-absorbing rubber pad 601 is honeycomb-like, which can absorb and buffer micro-vibrations, reducing the transmission of vibration to the precision weighing sensor 401, thereby reducing the impact of micro-vibrations on measurement accuracy. The rubber blocks 603 on the lower left and right sides of the support plate 602 and the lifting plate 5 are equipped with buffer springs 604 connected to the support plate 602 or the lifting plate 5. Several buffer springs 604 can attenuate vibration and play a multi-layer vibration isolation role.

[0023] In summary, as Figures 1-4As shown, this load cell with a micro-vibration suppression structure can be used by first installing the base plate 1 through the positioning mounting holes 2 on both sides of the base plate 1. During use, the upper "L"-shaped shock-absorbing rubber pad 601 is used to connect the lifting plate 5 and the support plate 602. The internal honeycomb structure of the shock-absorbing rubber pad 601 can absorb and buffer micro-vibrations, reducing the vibration transmitted to the precision load cell 401, thereby reducing the impact of micro-vibrations on measurement accuracy. The rubber blocks 603 on the lower left and right sides of the support plate 602 and the lifting plate 5 are equipped with buffer springs 604 connected to the support plate 602 or the lifting plate 5. Several buffer springs 604 can attenuate vibrations and play a multi-layer vibration isolation role. During the weighing process, the reading of the precision load cell 401 may be affected by impact or vibration. Stable, at this time, the first elastic body 404 on the lower side of both ends of the precision weighing sensor 401 uses a relatively hard elastic body to bear the main weighing load, while the second elastic body 405 on the inner side uses a relatively soft elastic body with good damping characteristics to absorb micro-vibration energy. Thus, while ensuring weighing accuracy, it can effectively isolate and attenuate micro-vibrations and improve reading accuracy. In addition, the lower sides of both sides of the precision weighing sensor 401 are provided with second rubber pads 402, which can play a certain flexible buffering role. The lower sides of both sides of the viscoelastic damper 301 are also provided with first rubber pads 302, which are located on the lower side of the precision weighing sensor 401 and can play the role of energy dissipation and vibration reduction. The precision weighing sensor 401 is a parallel beam type weighing sensor, which can realize weighing operation. In this way, the use process of the weighing sensor with micro-vibration suppression structure is completed.

[0024] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A load cell having a micro-vibration suppressing structure, comprising a base plate (1), a load cell assembly (4) and a load bearing portion (6), characterized in that, A protective component (3) is installed on the upper side of the base plate (1), and a weighing sensor component (4) is installed on the upper side of the protective component (3). A lifting plate (5) is provided on the upper side of the weighing sensor component (4), and a bearing part (6) is installed on the upper side of the lifting plate (5). The bearing part (6) includes a shock-absorbing rubber pad (601), a bearing plate (602), a rubber block (603), and a buffer spring (604). Two shock-absorbing rubber pads (601) are symmetrically arranged, and the bottom and top surfaces of the shock-absorbing rubber pads (601) are fixedly connected to the lifting plate (5) and the bearing plate (602) respectively. Rubber blocks (603) are fixed on the lower sides of the left and right sides of the bearing plate (602) and the lifting plate (5). The rubber blocks (603) are hollow structures. A buffer spring (604) is provided in the middle of the interior of the rubber block (603), and the top surface of the buffer spring (604) is fixedly connected to the bearing plate (602) or the lifting plate (5).

2. The load cell having a micro-vibration suppression structure according to claim 1, wherein, The base plate (1) has positioning mounting holes (2) on both sides, and both the base plate (1) and the bearing plate (602) are rectangular plates.

3. The load cell with micro-vibration suppression structure according to claim 1, wherein, The protective component (3) includes a viscoelastic damper (301) and a first rubber pad (302), with the first rubber pad (302) fixed on both lower sides of the viscoelastic damper (301).

4. A weighing sensor with a micro-vibration suppression structure according to claim 3, characterized in that, The protective component (3) also includes a first fixing plate (303), and the first fixing plate (303) is bonded to the lower side of the first rubber pad (302). The two first fixing plates (303) are fixedly connected to the base plate (1).

5. The load cell having a micro-vibration suppression structure according to claim 1, wherein, The weighing sensor assembly (4) includes a precision weighing sensor (401), a second rubber pad (402), and a second fixing plate (403). The second rubber pad (402) is fixed on both lower sides of the precision weighing sensor (401), and the second fixing plate (403) is adhered to the lower side of the second rubber pad (402).

6. The load cell having a micro-vibration suppression structure according to claim 5, wherein, The weighing sensor assembly (4) further includes a first elastic body (404) and a second elastic body (405). The first elastic body (404) is fixed on both sides below the two second fixing plates (403), and the second elastic body (405) is provided on the inner side of the first elastic body (404).

7. The load cell having a micro-vibration suppression structure according to claim 1, wherein, The shock-absorbing rubber pad (601) has an "L" shaped structure, and the interior of the shock-absorbing rubber pad (601) has a honeycomb structure.

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