WO2020199462A1 - Sealed weighing sensor - Google Patents

Sealed weighing sensor Download PDF

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Publication number
WO2020199462A1
WO2020199462A1 PCT/CN2019/101730 CN2019101730W WO2020199462A1 WO 2020199462 A1 WO2020199462 A1 WO 2020199462A1 CN 2019101730 W CN2019101730 W CN 2019101730W WO 2020199462 A1 WO2020199462 A1 WO 2020199462A1
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WO
WIPO (PCT)
Prior art keywords
main body
overload protection
elastic
elastic part
fixed end
Prior art date
Application number
PCT/CN2019/101730
Other languages
French (fr)
Chinese (zh)
Inventor
龚小林
Original Assignee
苏州钮曼精密机电科技有限公司
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Publication of WO2020199462A1 publication Critical patent/WO2020199462A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G21/00—Details of weighing apparatus
    • G01G21/14—Beams
    • G01G21/16—Beams of composite construction; Connections between different beams
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G21/00—Details of weighing apparatus
    • G01G21/30—Means for preventing contamination by dust
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports

Definitions

  • the invention relates to the field of weighing, in particular to a sealed weighing sensor.
  • the load cell is actually a device that converts the quality signal into a measurable electrical signal output.
  • the actual working environment of the sensor should be considered first when using the sensor. This is very important for the correct selection of the load cell. It is related to the normal operation of the sensor, its safety and service life, and the reliability and safety of the entire weighing instrument. Sex. In the basic concepts and evaluation methods of the main technical indicators of load cells, there are qualitative differences between the old and new national standards. There are several styles such as S type, cantilever type, spoke type, plate ring type, bellows type, bridge type, column type and so on.
  • the existing cantilever type load cell is very easy to deposit dirt and is not easy to clean. Therefore, the sensor with this structure is not suitable for use in occasions that often need to be cleaned, such as some food and beverage weighing equipment applications.
  • the technical problem to be solved by the present invention is to provide a sealed weighing sensor, which is not easy to deposit dirt and is easy to clean.
  • the present invention provides a sealed load cell, including:
  • An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end, and the elastic part includes:
  • the main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
  • An overload protection block the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end
  • An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end;
  • Resistance strain gauges the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam;
  • a cylindrical sealing housing, the cylindrical sealing housings are respectively fixed to the elastic part main body by means of laser welding to seal the elastic part main body, and the side surface of the cylindrical sealing housing is concave inward;
  • a fixed end which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
  • a first circuit board the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
  • a fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding;
  • a first cable the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
  • the electrical signal is a digital signal.
  • the cylindrical sealed housing is made of stainless steel.
  • the fixed end cover is made of stainless steel.
  • the upper gap and the lower gap have the same width.
  • a sealed load cell including:
  • An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
  • the main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
  • An overload protection block the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end
  • An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end;
  • Resistance strain gauges the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam;
  • a cylindrical sealing housing, the cylindrical sealing housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the cross-sectional area of the middle part of the side surface of the cylindrical sealing housing is smaller than the cross-sectional area of both ends;
  • a fixed end which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
  • a first circuit board the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
  • a fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding;
  • a first cable the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
  • the electrical signal is a digital signal.
  • the cylindrical sealed housing is made of stainless steel.
  • the fixed end cover is made of stainless steel.
  • the upper gap and the lower gap have the same width.
  • a sealed load cell including:
  • An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
  • the main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
  • An overload protection block the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end
  • An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end;
  • Resistance strain gauges the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam;
  • a cylindrical sealed housing wherein the cylindrical sealed housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the shape of the cylindrical sealed housing is formed by rotating a concave curve around a rotation axis;
  • a fixed end which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
  • a first circuit board the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
  • a fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding;
  • a first cable the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
  • the electrical signal is a digital signal.
  • the cylindrical sealed housing is made of stainless steel.
  • the fixed end cover is made of stainless steel.
  • the upper gap and the lower gap have the same width.
  • Figure 1 is a schematic diagram of the overall structure of the sealed load cell of the present invention.
  • Figure 2 is an exploded schematic diagram of the sealed load cell of the present invention.
  • a sealed load cell including:
  • the elastic part 200, one end of the elastic part is laser-welded and fixedly connected to the stressed end, and the elastic part includes:
  • the elastic portion main body 210 includes a first elastic beam 211 and a second elastic beam 212 integrally formed; the elastic portion main body is provided with an overload protection block between the first elastic beam and the second elastic beam Block placement slot 213;
  • An overload protection block 220 the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end
  • One end of the part, the other end and the end of the overload protection stop placement slot close to the stressed end respectively form an upper gap and a lower gap;
  • the resistance strain gauge 230 the number of the resistance strain gauge is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam;
  • a cylindrical sealing housing 240 wherein the cylindrical sealing housing fixes the elastic part main body by laser welding to seal the elastic part main body, and the side surface of the cylindrical sealing housing is concaved inward;
  • the fixed end 300 is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
  • a first circuit board 320 the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electrical signal;
  • a fixed end cover plate 330, the fixed end cover plate is sealed on the front side of the fixed end body, and the sealing is welded by laser welding;
  • the first cable 340 is fixedly connected to an end of the fixed end main body away from the elastic part main body, and the first cable is electrically connected to the first circuit board.
  • the electrical signal is a digital signal.
  • the cylindrical sealed housing is made of stainless steel.
  • the fixed end cover is made of stainless steel.
  • the upper gap and the lower gap have the same width.
  • a sealed load cell including:
  • An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
  • the main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
  • An overload protection block the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end
  • An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end;
  • Resistance strain gauges the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam;
  • a cylindrical sealing housing, the cylindrical sealing housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the cross-sectional area of the middle part of the side surface of the cylindrical sealing housing is smaller than the cross-sectional area of both ends;
  • a fixed end which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
  • a first circuit board the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
  • a fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding;
  • a first cable the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
  • the electrical signal is a digital signal.
  • the cylindrical sealed housing is made of stainless steel.
  • the fixed end cover is made of stainless steel.
  • the upper gap and the lower gap have the same width.
  • a sealed load cell including:
  • An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
  • the main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
  • An overload protection block the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end
  • An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end;
  • Resistance strain gauges the number of said resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam;
  • a cylindrical sealed housing wherein the cylindrical sealed housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the shape of the cylindrical sealed housing is formed by rotating a concave curve around a rotation axis;
  • a fixed end which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
  • a first circuit board the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
  • a fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding;
  • a first cable the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
  • the electrical signal is a digital signal.
  • the cylindrical sealed housing is made of stainless steel.
  • the fixed end cover is made of stainless steel.
  • the upper gap and the lower gap have the same width.
  • the side surface of the cylindrical sealed housing is recessed, so that when the sensor is cleaned, the cleaning liquid is not likely to remain on the surface of the sensor.
  • the cleaning liquid is not easy to get into the laser welding part of the elastic part, the stressed end part, and the fixed end part, so that the laser welding part is not easy to corrode, provide service life, and ensure the welding sealing effect.
  • Adopting a non-porous groove design such as a fixed end cover the whole is easy to clean.
  • the built-in overload protection block is adopted to achieve overload protection and easy to clean.
  • the overload protection stopper is arranged on the main body of the elastic part.
  • the overload protection stopper between the first elastic beam and the second elastic beam is placed in a through slot, which matches well with the two-beam design, that is, maintains the resistance of the two beams. Partial load capacity has overload protection.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Force In General (AREA)

Abstract

Disclosed is a sealed weighing sensor. The sealed weighing sensor comprises: a force-receiving end portion (100); an elastic portion (200), wherein one end of the elastic portion (200) is fixedly connected to the force-receiving end portion (100) by means of laser welding, and the elastic portion (200) comprises an elastic portion main body (210), with the elastic portion main body (210) comprising a first elastic beam (211) and a second elastic beam (212), which are integrally formed, and the elastic portion main body (210) being provided, between the first elastic beam (211) and the second elastic beam (212), with an overload protection stopper placement through-groove (213); and an overload protection stopper (220), wherein the overload protection stopper (220) is arranged in the overload protection stopper placement through-groove (213), with one end of the overload protection stopper (220) being fixed at one end, far away from the force-receiving end portion (100), of the overload protection stopper placement through-groove (213), and the other end of the overload protection stopper and one end, close to the force-receiving end portion (100), of the overload protection stopper placement through-groove (213) respectively forming an upper clearance and a lower clearance. A columnar sealing housing (240) is fixed by means of laser welding so as to seal the elastic portion main body (210), and a side surface of the columnar sealing housing (240) is recessed inward. Dirt is not easily deposited on the sensor, and the sensor can be easily cleaned.

Description

密封式称重传感器Sealed load cell 技术领域Technical field
本发明涉及称重领域，具体涉及一种密封式称重传感器。The invention relates to the field of weighing, in particular to a sealed weighing sensor.
背景技术Background technique
称重传感器实际上是一种将质量信号转变为可测量的电信号输出的装置。用传感器应先要考虑传感器所处的实际工作环境，这点对正确选用称重传感器至关重要，它关系到传感器能否正常工作以及它的安全和使用寿命，乃至整个衡器的可靠性和安全性。在称重传感器主要技术指标的基本概念和评价方法上，新旧国标有质的差异。主要有S型、悬臂型、轮辐式、板环式、膜盒式、桥式、柱筒式等几种样式。The load cell is actually a device that converts the quality signal into a measurable electrical signal output. The actual working environment of the sensor should be considered first when using the sensor. This is very important for the correct selection of the load cell. It is related to the normal operation of the sensor, its safety and service life, and the reliability and safety of the entire weighing instrument. Sex. In the basic concepts and evaluation methods of the main technical indicators of load cells, there are qualitative differences between the old and new national standards. There are several styles such as S type, cantilever type, spoke type, plate ring type, bellows type, bridge type, column type and so on.
传统技术存在以下技术问题：Traditional technology has the following technical problems:
现有悬臂型称重传感器非常容易沉积污垢，并且不容易清洗，因此这种结构的传感器不适合使用在经常需要清洗的场合，例如一些食品饮料称重设备的应用。The existing cantilever type load cell is very easy to deposit dirt and is not easy to clean. Therefore, the sensor with this structure is not suitable for use in occasions that often need to be cleaned, such as some food and beverage weighing equipment applications.
发明内容Summary of the invention
本发明要解决的技术问题是提供一种密封式称重传感器，不容易沉积污垢，容易清洗。The technical problem to be solved by the present invention is to provide a sealed weighing sensor, which is not easy to deposit dirt and is easy to clean.
为了解决上述技术问题，本发明提供了一种密封式称重传感器，包括：In order to solve the above technical problems, the present invention provides a sealed load cell, including:
受力端部；Force end
弹性部，所述弹性部的一端激光焊接固定连接所述受力端部，所述弹性部 包括：An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end, and the elastic part includes:
弹性部主体，所述弹性部主体包括整体一体成型的第一弹性梁和第二弹性梁；所述弹性部主体在位于第一弹性梁和第二弹性梁之间设有过载保护挡块放置通槽；The main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
过载保护挡块，所述过载保护挡块设置在所述过载保护挡块放置通槽内，所述过载保护挡块的一端固定在所述过载保护挡块放置通槽远离所述受力端部的一端，另一端与所述过载保护挡块放置通槽靠近所述受力端部的一端分别形成上部间隙和下部间隙；以及An overload protection block, the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end; and
电阻应变片，所述电阻应变片的数量为两个，分别设置在所述第一弹性梁的上端面和所述第二弹性梁的下端面；以及Resistance strain gauges, the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam; and
柱状密封外壳，所述柱状密封外壳通过激光焊接的方式分别固定所述弹性部主体从而密封所述弹性部主体，所述柱状密封外壳的侧面向内凹；A cylindrical sealing housing, the cylindrical sealing housings are respectively fixed to the elastic part main body by means of laser welding to seal the elastic part main body, and the side surface of the cylindrical sealing housing is concave inward;
固定端部，所述固定端部通过激光焊接固定连接所述弹性部远离所述受力端部的一端，所述固定端部包括：A fixed end, which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
固定端部主体；Fixed end body;
第一电路板，所述第一电路板位于所述固定端部主体内，所述第一电路板将所述电阻应变片的电阻转换成电信号；A first circuit board, the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
固定端部盖板，所述固定端部盖板密封在所述固定端部主体的前侧面上，密封采用激光焊接的方式焊接；以及A fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding; and
第一线缆，所述第一线缆固定连接在所述固定端部主体远离所述弹性部主体的一端，所述第一线缆电连接第一电路板。A first cable, the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
在其中一个实施例中，所述电信号是数字信号。In one of the embodiments, the electrical signal is a digital signal.
在其中一个实施例中，所述柱状密封外壳是不锈钢材料。In one of the embodiments, the cylindrical sealed housing is made of stainless steel.
在其中一个实施例中，所述固定端部盖板是不锈钢材料。In one of the embodiments, the fixed end cover is made of stainless steel.
在其中一个实施例中，所述上部间隙和下部间隙的宽度相等。In one of the embodiments, the upper gap and the lower gap have the same width.
一种密封式称重传感器，包括：A sealed load cell, including:
受力端部；Force end
弹性部，所述弹性部的一端激光焊接固定连接所述受力端部，所述弹性部包括：An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
弹性部主体，所述弹性部主体包括整体一体成型的第一弹性梁和第二弹性梁；所述弹性部主体在位于第一弹性梁和第二弹性梁之间设有过载保护挡块放置通槽；The main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
过载保护挡块，所述过载保护挡块设置在所述过载保护挡块放置通槽内，所述过载保护挡块的一端固定在所述过载保护挡块放置通槽远离所述受力端部的一端，另一端与所述过载保护挡块放置通槽靠近所述受力端部的一端分别形成上部间隙和下部间隙；以及An overload protection block, the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end; and
电阻应变片，所述电阻应变片的数量为两个，分别设置在所述第一弹性梁的上端面和所述第二弹性梁的下端面；以及Resistance strain gauges, the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam; and
柱状密封外壳，所述柱状密封外壳通过激光焊接的方式分别固定所述弹性部主体从而密封所述弹性部主体，所述柱状密封外壳的侧面的中部的截面积小于两端的截面积；A cylindrical sealing housing, the cylindrical sealing housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the cross-sectional area of the middle part of the side surface of the cylindrical sealing housing is smaller than the cross-sectional area of both ends;
固定端部，所述固定端部通过激光焊接固定连接所述弹性部远离所述受力端部的一端，所述固定端部包括：A fixed end, which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
固定端部主体；Fixed end body;
第一电路板，所述第一电路板位于所述固定端部主体内，所述第一电路板将所述电阻应变片的电阻转换成电信号；A first circuit board, the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
固定端部盖板，所述固定端部盖板密封在所述固定端部主体的前侧面上， 密封采用激光焊接的方式焊接；以及A fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding; and
第一线缆，所述第一线缆固定连接在所述固定端部主体远离所述弹性部主体的一端，所述第一线缆电连接第一电路板。A first cable, the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
在其中一个实施例中，所述电信号是数字信号。In one of the embodiments, the electrical signal is a digital signal.
在其中一个实施例中，所述柱状密封外壳是不锈钢材料。In one of the embodiments, the cylindrical sealed housing is made of stainless steel.
在其中一个实施例中，所述固定端部盖板是不锈钢材料。In one of the embodiments, the fixed end cover is made of stainless steel.
在其中一个实施例中，所述上部间隙和下部间隙的宽度相等。In one of the embodiments, the upper gap and the lower gap have the same width.
一种密封式称重传感器，包括：A sealed load cell, including:
受力端部；Force end
弹性部，所述弹性部的一端激光焊接固定连接所述受力端部，所述弹性部包括：An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
弹性部主体，所述弹性部主体包括整体一体成型的第一弹性梁和第二弹性梁；所述弹性部主体在位于第一弹性梁和第二弹性梁之间设有过载保护挡块放置通槽；The main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
过载保护挡块，所述过载保护挡块设置在所述过载保护挡块放置通槽内，所述过载保护挡块的一端固定在所述过载保护挡块放置通槽远离所述受力端部的一端，另一端与所述过载保护挡块放置通槽靠近所述受力端部的一端分别形成上部间隙和下部间隙；以及An overload protection block, the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end; and
电阻应变片，所述电阻应变片的数量为两个，分别设置在所述第一弹性梁的上端面和所述第二弹性梁的下端面；以及Resistance strain gauges, the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam; and
柱状密封外壳，所述柱状密封外壳通过激光焊接的方式分别固定所述弹性部主体从而密封所述弹性部主体，所述柱状密封外壳的形状是由内凹曲线绕旋转轴线旋转一圈而成；A cylindrical sealed housing, wherein the cylindrical sealed housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the shape of the cylindrical sealed housing is formed by rotating a concave curve around a rotation axis;
固定端部，所述固定端部通过激光焊接固定连接所述弹性部远离所述受力端部的一端，所述固定端部包括：A fixed end, which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
固定端部主体；Fixed end body;
第一电路板，所述第一电路板位于所述固定端部主体内，所述第一电路板将所述电阻应变片的电阻转换成电信号；A first circuit board, the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
固定端部盖板，所述固定端部盖板密封在所述固定端部主体的前侧面上，密封采用激光焊接的方式焊接；以及A fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding; and
第一线缆，所述第一线缆固定连接在所述固定端部主体远离所述弹性部主体的一端，所述第一线缆电连接第一电路板。A first cable, the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
在其中一个实施例中，所述电信号是数字信号。In one of the embodiments, the electrical signal is a digital signal.
在其中一个实施例中，所述柱状密封外壳是不锈钢材料。In one of the embodiments, the cylindrical sealed housing is made of stainless steel.
在其中一个实施例中，所述固定端部盖板是不锈钢材料。In one of the embodiments, the fixed end cover is made of stainless steel.
在其中一个实施例中，所述上部间隙和下部间隙的宽度相等。In one of the embodiments, the upper gap and the lower gap have the same width.
本发明的有益效果：The beneficial effects of the present invention:
不容易沉积污垢，容易清洗。Not easy to deposit dirt, easy to clean.
附图说明Description of the drawings
图1是本发明密封式称重传感器的整体结构示意图。Figure 1 is a schematic diagram of the overall structure of the sealed load cell of the present invention.
图2是本发明密封式称重传感器的爆炸示意图。Figure 2 is an exploded schematic diagram of the sealed load cell of the present invention.
具体实施方式detailed description
下面结合附图和具体实施例对本发明作进一步说明，以使本领域的技术人 员可以更好地理解本发明并能予以实施，但所举实施例不作为对本发明的限定。The present invention will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention, but the examples cited are not intended to limit the present invention.
参阅图1和图2，一种密封式称重传感器，包括：Refer to Figure 1 and Figure 2, a sealed load cell, including:
受力端部100； Forced end 100;
弹性部200，所述弹性部的一端激光焊接固定连接所述受力端部，所述弹性部包括：The elastic part 200, one end of the elastic part is laser-welded and fixedly connected to the stressed end, and the elastic part includes:
弹性部主体210，所述弹性部主体包括整体一体成型的第一弹性梁211和第二弹性梁212；所述弹性部主体在位于第一弹性梁和第二弹性梁之间设有过载保护挡块放置通槽213；The elastic portion main body 210 includes a first elastic beam 211 and a second elastic beam 212 integrally formed; the elastic portion main body is provided with an overload protection block between the first elastic beam and the second elastic beam Block placement slot 213;
过载保护挡块220，所述过载保护挡块设置在所述过载保护挡块放置通槽内，所述过载保护挡块的一端固定在所述过载保护挡块放置通槽远离所述受力端部的一端，另一端与所述过载保护挡块放置通槽靠近所述受力端部的一端分别形成上部间隙和下部间隙；以及An overload protection block 220, the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end One end of the part, the other end and the end of the overload protection stop placement slot close to the stressed end respectively form an upper gap and a lower gap; and
电阻应变片230，所述电阻应变片的数量为两个，分别设置在所述第一弹性梁的上端面和所述第二弹性梁的下端面；以及The resistance strain gauge 230, the number of the resistance strain gauge is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam; and
柱状密封外壳240，所述柱状密封外壳通过激光焊接的方式分别固定所述弹性部主体从而密封所述弹性部主体，所述柱状密封外壳的侧面向内凹；A cylindrical sealing housing 240, wherein the cylindrical sealing housing fixes the elastic part main body by laser welding to seal the elastic part main body, and the side surface of the cylindrical sealing housing is concaved inward;
固定端部300，所述固定端部通过激光焊接固定连接所述弹性部远离所述受力端部的一端，所述固定端部包括：The fixed end 300 is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
固定端部主体310； Fixed end body 310;
第一电路板320，所述第一电路板位于所述固定端部主体内，所述第一电路板将所述电阻应变片的电阻转换成电信号；A first circuit board 320, the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electrical signal;
固定端部盖板330，所述固定端部盖板密封在所述固定端部主体的前侧面上，密封采用激光焊接的方式焊接；以及A fixed end cover plate 330, the fixed end cover plate is sealed on the front side of the fixed end body, and the sealing is welded by laser welding; and
第一线缆340，所述第一线缆固定连接在所述固定端部主体远离所述弹性 部主体的一端，所述第一线缆电连接第一电路板。The first cable 340 is fixedly connected to an end of the fixed end main body away from the elastic part main body, and the first cable is electrically connected to the first circuit board.
在其中一个实施例中，所述电信号是数字信号。In one of the embodiments, the electrical signal is a digital signal.
在其中一个实施例中，所述柱状密封外壳是不锈钢材料。In one of the embodiments, the cylindrical sealed housing is made of stainless steel.
在其中一个实施例中，所述固定端部盖板是不锈钢材料。In one of the embodiments, the fixed end cover is made of stainless steel.
在其中一个实施例中，所述上部间隙和下部间隙的宽度相等。In one of the embodiments, the upper gap and the lower gap have the same width.
一种密封式称重传感器，包括：A sealed load cell, including:
受力端部；Force end
弹性部，所述弹性部的一端激光焊接固定连接所述受力端部，所述弹性部包括：An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
弹性部主体，所述弹性部主体包括整体一体成型的第一弹性梁和第二弹性梁；所述弹性部主体在位于第一弹性梁和第二弹性梁之间设有过载保护挡块放置通槽；The main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
过载保护挡块，所述过载保护挡块设置在所述过载保护挡块放置通槽内，所述过载保护挡块的一端固定在所述过载保护挡块放置通槽远离所述受力端部的一端，另一端与所述过载保护挡块放置通槽靠近所述受力端部的一端分别形成上部间隙和下部间隙；以及An overload protection block, the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end; and
电阻应变片，所述电阻应变片的数量为两个，分别设置在所述第一弹性梁的上端面和所述第二弹性梁的下端面；以及Resistance strain gauges, the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam; and
柱状密封外壳，所述柱状密封外壳通过激光焊接的方式分别固定所述弹性部主体从而密封所述弹性部主体，所述柱状密封外壳的侧面的中部的截面积小于两端的截面积；A cylindrical sealing housing, the cylindrical sealing housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the cross-sectional area of the middle part of the side surface of the cylindrical sealing housing is smaller than the cross-sectional area of both ends;
固定端部，所述固定端部通过激光焊接固定连接所述弹性部远离所述受力端部的一端，所述固定端部包括：A fixed end, which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
固定端部主体；Fixed end body;
第一电路板，所述第一电路板位于所述固定端部主体内，所述第一电路板将所述电阻应变片的电阻转换成电信号；A first circuit board, the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
固定端部盖板，所述固定端部盖板密封在所述固定端部主体的前侧面上，密封采用激光焊接的方式焊接；以及A fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding; and
第一线缆，所述第一线缆固定连接在所述固定端部主体远离所述弹性部主体的一端，所述第一线缆电连接第一电路板。A first cable, the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
在其中一个实施例中，所述电信号是数字信号。In one of the embodiments, the electrical signal is a digital signal.
在其中一个实施例中，所述柱状密封外壳是不锈钢材料。In one of the embodiments, the cylindrical sealed housing is made of stainless steel.
在其中一个实施例中，所述固定端部盖板是不锈钢材料。In one of the embodiments, the fixed end cover is made of stainless steel.
在其中一个实施例中，所述上部间隙和下部间隙的宽度相等。In one of the embodiments, the upper gap and the lower gap have the same width.
一种密封式称重传感器，包括：A sealed load cell, including:
受力端部；Force end
弹性部，所述弹性部的一端激光焊接固定连接所述受力端部，所述弹性部包括：An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
弹性部主体，所述弹性部主体包括整体一体成型的第一弹性梁和第二弹性梁；所述弹性部主体在位于第一弹性梁和第二弹性梁之间设有过载保护挡块放置通槽；The main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
过载保护挡块，所述过载保护挡块设置在所述过载保护挡块放置通槽内，所述过载保护挡块的一端固定在所述过载保护挡块放置通槽远离所述受力端部的一端，另一端与所述过载保护挡块放置通槽靠近所述受力端部的一端分别形成上部间隙和下部间隙；以及An overload protection block, the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end; and
电阻应变片，所述电阻应变片的数量为两个，分别设置在所述第一弹性梁 的上端面和所述第二弹性梁的下端面；以及Resistance strain gauges, the number of said resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam; and
柱状密封外壳，所述柱状密封外壳通过激光焊接的方式分别固定所述弹性部主体从而密封所述弹性部主体，所述柱状密封外壳的形状是由内凹曲线绕旋转轴线旋转一圈而成；A cylindrical sealed housing, wherein the cylindrical sealed housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the shape of the cylindrical sealed housing is formed by rotating a concave curve around a rotation axis;
固定端部，所述固定端部通过激光焊接固定连接所述弹性部远离所述受力端部的一端，所述固定端部包括：A fixed end, which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
固定端部主体；Fixed end body;
第一电路板，所述第一电路板位于所述固定端部主体内，所述第一电路板将所述电阻应变片的电阻转换成电信号；A first circuit board, the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
固定端部盖板，所述固定端部盖板密封在所述固定端部主体的前侧面上，密封采用激光焊接的方式焊接；以及A fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding; and
第一线缆，所述第一线缆固定连接在所述固定端部主体远离所述弹性部主体的一端，所述第一线缆电连接第一电路板。A first cable, the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
在其中一个实施例中，所述电信号是数字信号。In one of the embodiments, the electrical signal is a digital signal.
在其中一个实施例中，所述柱状密封外壳是不锈钢材料。In one of the embodiments, the cylindrical sealed housing is made of stainless steel.
在其中一个实施例中，所述固定端部盖板是不锈钢材料。In one of the embodiments, the fixed end cover is made of stainless steel.
在其中一个实施例中，所述上部间隙和下部间隙的宽度相等。In one of the embodiments, the upper gap and the lower gap have the same width.
本发明的有益效果：The beneficial effects of the present invention:
不容易沉积污垢，容易清洗。具体地，柱状密封外壳的侧面向内凹，这样传感器在清洗时，清洗液不容易残留在传感器的表面。同时，由于侧面内凹，清洗液不容易沾到到弹性部与受力端部、固定端部的激光焊接处，使激光焊接处不容易腐蚀，提供使用寿命，保证焊接密封效果。采用固定端部盖板这样的无孔槽式设计，整体容易清洗。采用内置过载保护挡块的方式，即达到过载保护，又容易清洗。过载保护挡块设置在所述弹性部主体在位于第一弹性梁和第 二弹性梁之间的过载保护挡块放置通槽，与两梁式设计达到很好的配合，即保持两梁的抗偏载能力又具有过载保护。Not easy to deposit dirt, easy to clean. Specifically, the side surface of the cylindrical sealed housing is recessed, so that when the sensor is cleaned, the cleaning liquid is not likely to remain on the surface of the sensor. At the same time, because the side surface is concave, the cleaning liquid is not easy to get into the laser welding part of the elastic part, the stressed end part, and the fixed end part, so that the laser welding part is not easy to corrode, provide service life, and ensure the welding sealing effect. Adopting a non-porous groove design such as a fixed end cover, the whole is easy to clean. The built-in overload protection block is adopted to achieve overload protection and easy to clean. The overload protection stopper is arranged on the main body of the elastic part. The overload protection stopper between the first elastic beam and the second elastic beam is placed in a through slot, which matches well with the two-beam design, that is, maintains the resistance of the two beams. Partial load capacity has overload protection.
以上所述实施例仅是为充分说明本发明而所举的较佳的实施例，本发明的保护范围不限于此。本技术领域的技术人员在本发明基础上所作的等同替代或变换，均在本发明的保护范围之内。本发明的保护范围以权利要求书为准。The above-mentioned embodiments are only preferred embodiments for fully explaining the present invention, and the protection scope of the present invention is not limited thereto. The equivalent substitutions or changes made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.

Claims (10)

  1. 一种密封式称重传感器，其特征在于，包括：A sealed weighing sensor, characterized in that it comprises:
    受力端部；Force end
    弹性部，所述弹性部的一端激光焊接固定连接所述受力端部，所述弹性部包括：An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
    弹性部主体，所述弹性部主体包括整体一体成型的第一弹性梁和第二弹性梁；所述弹性部主体在位于第一弹性梁和第二弹性梁之间设有过载保护挡块放置通槽；The main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
    过载保护挡块，所述过载保护挡块设置在所述过载保护挡块放置通槽内，所述过载保护挡块的一端固定在所述过载保护挡块放置通槽远离所述受力端部的一端，另一端与所述过载保护挡块放置通槽靠近所述受力端部的一端分别形成上部间隙和下部间隙；以及An overload protection block, the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end; and
    电阻应变片，所述电阻应变片的数量为两个，分别设置在所述第一弹性梁的上端面和所述第二弹性梁的下端面；以及Resistance strain gauges, the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam; and
    柱状密封外壳，所述柱状密封外壳通过激光焊接的方式分别固定所述弹性部主体从而密封所述弹性部主体，所述柱状密封外壳的侧面向内凹；A cylindrical sealing housing, the cylindrical sealing housings are respectively fixed to the elastic part main body by means of laser welding to seal the elastic part main body, and the side surface of the cylindrical sealing housing is concave inward;
    固定端部，所述固定端部通过激光焊接固定连接所述弹性部远离所述受力端部的一端，所述固定端部包括：A fixed end, which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
    固定端部主体；Fixed end body;
    第一电路板，所述第一电路板位于所述固定端部主体内，所述第一电路板将所述电阻应变片的电阻转换成电信号；A first circuit board, the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
    固定端部盖板，所述固定端部盖板密封在所述固定端部主体的前侧面上，密封采用激光焊接的方式焊接；以及A fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding; and
    第一线缆，所述第一线缆固定连接在所述固定端部主体远离所述弹性部主体的一端，所述第一线缆电连接第一电路板。A first cable, the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
  2. 如权利要求1所述的称重传感器，其特征在于，所述电信号是数字信号。The load cell according to claim 1, wherein the electrical signal is a digital signal.
  3. 如权利要求1所述的称重传感器，其特征在于，所述柱状密封外壳是不锈钢材料。The load cell according to claim 1, wherein the cylindrical sealed housing is made of stainless steel.
  4. 如权利要求1所述的称重传感器，其特征在于，所述固定端部盖板是不锈钢材料。The load cell according to claim 1, wherein the fixed end cover is made of stainless steel.
  5. 一种密封式称重传感器，其特征在于，包括：A sealed weighing sensor, characterized in that it comprises:
    受力端部；Force end
    弹性部，所述弹性部的一端激光焊接固定连接所述受力端部，所述弹性部包括：An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
    弹性部主体，所述弹性部主体包括整体一体成型的第一弹性梁和第二弹性梁；所述弹性部主体在位于第一弹性梁和第二弹性梁之间设有过载保护挡块放置通槽；The main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
    过载保护挡块，所述过载保护挡块设置在所述过载保护挡块放置通槽内，所述过载保护挡块的一端固定在所述过载保护挡块放置通槽远离所述受力端部的一端，另一端与所述过载保护挡块放置通槽靠近所述受力端部的一端分别形成上部间隙和下部间隙；以及An overload protection block, the overload protection block is arranged in the overload protection block placement through groove, one end of the overload protection block is fixed in the overload protection block placement through groove away from the stressed end An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement slot close to the stressed end; and
    电阻应变片，所述电阻应变片的数量为两个，分别设置在所述第一弹性梁的上端面和所述第二弹性梁的下端面；以及Resistance strain gauges, the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam; and
    柱状密封外壳，所述柱状密封外壳通过激光焊接的方式分别固定所述弹性部主体从而密封所述弹性部主体，所述柱状密封外壳的侧面的中部的截面积小于两端的截面积；A cylindrical sealing housing, the cylindrical sealing housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the cross-sectional area of the middle part of the side surface of the cylindrical sealing housing is smaller than the cross-sectional area of both ends;
    固定端部，所述固定端部通过激光焊接固定连接所述弹性部远离所述受力端部的一端，所述固定端部包括：A fixed end, which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
    固定端部主体；Fixed end body;
    第一电路板，所述第一电路板位于所述固定端部主体内，所述第一电路板将所述电阻应变片的电阻转换成电信号；A first circuit board, the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
    固定端部盖板，所述固定端部盖板密封在所述固定端部主体的前侧面上，密封采用激光焊接的方式焊接；以及A fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding; and
    第一线缆，所述第一线缆固定连接在所述固定端部主体远离所述弹性部主体的一端，所述第一线缆电连接第一电路板。A first cable, the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
  6. 如权利要求5所述的称重传感器，其特征在于，所述电信号是数字信号。The load cell according to claim 5, wherein the electrical signal is a digital signal.
  7. 如权利要求5所述的称重传感器，其特征在于，所述柱状密封外壳是不锈钢材料。The load cell according to claim 5, wherein the cylindrical sealed housing is made of stainless steel.
  8. 如权利要求5所述的称重传感器，其特征在于，所述固定端部盖板是不锈钢材料。The load cell according to claim 5, wherein the fixed end cover is made of stainless steel.
  9. 一种密封式称重传感器，其特征在于，包括：A sealed weighing sensor, characterized in that it comprises:
    受力端部；Force end
    弹性部，所述弹性部的一端激光焊接固定连接所述受力端部，所述弹性部包括：An elastic part, one end of the elastic part is laser welded and fixedly connected to the stressed end part, and the elastic part includes:
    弹性部主体，所述弹性部主体包括整体一体成型的第一弹性梁和第二弹性梁；所述弹性部主体在位于第一弹性梁和第二弹性梁之间设有过载保护挡块放置通槽；The main body of the elastic part includes a first elastic beam and a second elastic beam which are integrally formed; the main body of the elastic part is provided with an overload protection block between the first elastic beam and the second elastic beam. groove;
    过载保护挡块，所述过载保护挡块设置在所述过载保护挡块放置通槽内，所述过载保护挡块的一端固定在所述过载保护挡块放置通槽远离所述受力端部 的一端，另一端与所述过载保护挡块放置通槽靠近所述受力端部的一端分别形成上部间隙和下部间隙；以及An overload protection stopper, the overload protection stopper is arranged in the overload protection stopper placement slot, one end of the overload protection stopper is fixed in the overload protection stopper placement slot away from the stressed end An upper gap and a lower gap are formed at one end and the other end of the overload protection stopper placement through slot, which is close to the stressed end; and
    电阻应变片，所述电阻应变片的数量为两个，分别设置在所述第一弹性梁的上端面和所述第二弹性梁的下端面；以及Resistance strain gauges, the number of the resistance strain gauges is two, which are respectively arranged on the upper end surface of the first elastic beam and the lower end surface of the second elastic beam; and
    柱状密封外壳，所述柱状密封外壳通过激光焊接的方式分别固定所述弹性部主体从而密封所述弹性部主体，所述柱状密封外壳的形状是由内凹曲线绕旋转轴线旋转一圈而成；A cylindrical sealed housing, wherein the cylindrical sealed housings respectively fix the elastic part main body by laser welding to seal the elastic part main body, and the shape of the cylindrical sealed housing is formed by rotating a concave curve around a rotation axis;
    固定端部，所述固定端部通过激光焊接固定连接所述弹性部远离所述受力端部的一端，所述固定端部包括：A fixed end, which is fixedly connected to an end of the elastic part away from the stressed end by laser welding, and the fixed end includes:
    固定端部主体；Fixed end body;
    第一电路板，所述第一电路板位于所述固定端部主体内，所述第一电路板将所述电阻应变片的电阻转换成电信号；A first circuit board, the first circuit board is located in the fixed end main body, and the first circuit board converts the resistance of the resistance strain gauge into an electric signal;
    固定端部盖板，所述固定端部盖板密封在所述固定端部主体的前侧面上，密封采用激光焊接的方式焊接；以及A fixed end cover plate, the fixed end cover plate is sealed on the front side of the fixed end main body, and the sealing is welded by laser welding; and
    第一线缆，所述第一线缆固定连接在所述固定端部主体远离所述弹性部主体的一端，所述第一线缆电连接第一电路板。A first cable, the first cable is fixedly connected to an end of the fixed end main body away from the elastic portion main body, and the first cable is electrically connected to a first circuit board.
  10. 如权利要求1所述的称重传感器，其特征在于，所述电信号是数字信号。The load cell according to claim 1, wherein the electrical signal is a digital signal.
PCT/CN2019/101730 2019-04-01 2019-08-21 Sealed weighing sensor WO2020199462A1 (en)

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CN110132383A (en) * 2019-04-01 2019-08-16 苏州钮曼精密机电科技有限公司 Sealed weighing sensor

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