CN213580746U

CN213580746U - Measuring device for measuring the bending behavior of a bimetallic element

Info

Publication number: CN213580746U
Application number: CN202022738392.5U
Authority: CN
Inventors: 陈翔; 章尧
Original assignee: Siemens Circuit Protection Systems Ltd
Current assignee: Siemens Circuit Protection Systems Ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-06-29
Anticipated expiration: 2030-11-23

Abstract

The utility model provides a measuring device for be used for measuring bimetallic element bending property, including a centre gripping body, a grip block, a bracket component and a sensor support. The clamping body and the clamping block are made of insulating materials. The clamping block is used for clamping a sample to be tested in cooperation with the clamping body. The bracket component is used for clamping the clamping body and the clamping block. The bracket component comprises a connecting piece and a fastening piece, the bracket component is connected to the clamping body through the connecting piece, and the fastening piece is used for adjusting the clamping force between the clamping body and the clamping block. The first sensor support is arranged on one of the clamping body and the clamping block, and a displacement sensor is arranged on the first sensor support. The displacement sensor is used for measuring the displacement of the deformation part of the sample to be measured. The utility model discloses a current heats bimetallic element and measures the corresponding crooked degree of bimetallic element, can measure the influence of bimetallic element internal resistance to its crooked degree.

Description

Measuring device for measuring the bending behavior of a bimetallic element

Technical Field

The utility model relates to a low pressure electric field especially relates to a measuring device for measuring bimetallic element bending characteristic.

Background

In the prior art, the method for measuring the bending property of the bimetal element is to heat a sample to be measured in a bath to a specific temperature for measurement. For example, fig. 1 shows a conventional bimetal element bending characteristic measuring device. The measurement holder 81 of the measuring apparatus is provided with a sample holder 83, a measuring rod 84, and a thermometer 85. During testing, bath 82 is filled with oil and sample holder 83 holds one end of the sample. When the oil in bath 82 is heated to a specified temperature, the sample deforms so that its other end abuts against measuring rod 84, and contacts indicator 86 to indicate. However, since the measuring rod 84 performs measurement by the solenoid sensor, the measurement result thereof is affected by the self weight of the measuring rod 84, resulting in inaccurate measurement result.

In addition, the existing measuring device adopts the oil temperature heating mode to measure, the bending degree of the bimetallic element is only influenced by the oil temperature, the influence of the internal resistance of the bimetallic element on the bending degree of the bimetallic element is not considered, and the bending characteristic of the bimetallic element cannot be accurately measured.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a measuring device for measuring bimetallic element bending property, it can measure the influence of bimetallic element internal resistance to bimetallic element bending degree, and measuring result is more accurate.

The utility model provides a measuring device for be used for measuring bimetallic element bending property, including a centre gripping body, a grip block, a bracket component and a sensor support. The clamping body is made of insulating materials. The clamping block is used for being matched with the clamping body to clamp a sample to be tested, and the clamping block is made of insulating materials. The bracket component is used for clamping the clamping body and the clamping block. The bracket component comprises a connecting piece and a fastening piece, the bracket component is connected to the clamping body through the connecting piece, and the fastening piece is used for adjusting the clamping force between the clamping body and the clamping block. The first sensor support is arranged on the clamping body and one of the clamping blocks, and a displacement sensor is arranged on the first sensor support. The displacement sensor is used for measuring the displacement of the deformation part of the sample to be measured. The utility model discloses a current of flowing through bimetallic element heats bimetallic element and measures the corresponding degree of curvature of bimetallic element (for example, measure the displacement of deformation part), can measure the influence of bimetallic element internal resistance to bimetallic element degree of curvature.

In a further exemplary embodiment of the measuring device, the measuring device further comprises a current sensor for measuring a value of current flowing through the sample to be measured.

In a further exemplary embodiment of the measuring device, the measuring device further comprises a second sensor carrier. The second sensor support is disposed on the other of the clamping body and the clamping block. And a temperature sensor is arranged on the second sensor support and is used for measuring the temperature of the sample to be measured. The bending characteristics of the bimetal element can be measured more accurately by providing the temperature sensor.

In another exemplary embodiment of the measuring device, the displacement sensor and the temperature sensor are contactless sensors. By adopting the non-contact sensor, the interference of the dead weight of the sensor or the resistance of the sensor on the measurement result can be prevented, and the measurement accuracy is improved.

In another exemplary embodiment of the measuring device, the measuring device further comprises a recorder, which is connected to the displacement sensor and the temperature sensor. The recorder can record the values of the sensors in real time to form corresponding analysis tables and analysis data.

In another exemplary embodiment of the measuring device, the clamping body is provided with a connecting hole, and the bracket assembly further comprises a first bracket and a second bracket. The first support is provided with the fastener, and the first support is connected to the connecting hole through the connecting piece. The second bracket is connected with the first bracket through the connecting piece. The measuring device of the embodiment has a simple structure and is easy to produce and manufacture.

In another exemplary embodiment of the measuring device, the measuring device can act on the clamping body via the fastening element and on the clamping block via the second holder for clamping the sample to be measured.

In another exemplary embodiment of the measuring device, a portion of the connecting piece located in the connecting hole can move towards the clamping block to ensure that the clamping body can be firmly abutted against the clamping block under the action of the fastener.

In another exemplary embodiment of the measuring device, the first and second brackets are U-shaped members and the fastening member is a screw.

In another exemplary embodiment of the measuring device, a positioning rod is further disposed on the second support, and one end of the positioning rod can penetrate through the clamping block and extend into the clamping body. Through setting up a locating lever, can make grip block, centre gripping body only can follow the radial direction relative motion of locating lever, convenient to use.

In another exemplary embodiment of the measuring device, a limiting bump is arranged on the clamping body, and a limiting groove matched with the limiting bump is arranged on the clamping block. Through setting up spacing lug, not only can inject the degree of depth of the sample centre gripping that awaits measuring, can also restrict the relative motion between centre gripping body and the grip block for measuring device is more stable when the centre gripping awaits measuring the sample.

In another exemplary embodiment of the measuring device, a positioning groove is provided on the clamping block, and the positioning groove can accommodate the sample to be measured.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Fig. 1 shows a conventional bimetal bending characteristic measuring apparatus.

Fig. 2 is a schematic configuration diagram for explaining an exemplary embodiment of the measuring apparatus.

Fig. 3 is a schematic structural view of the measuring apparatus of fig. 2 with the first and second supports removed.

Wherein the reference numbers are as follows:

10 clamping body 50 second sensor holder

11 connecting hole 51 temperature sensor

12 position limiting lug 60 current sensor

20 clamping block 70 sample to be measured

31 connecting piece 81 measuring support

32 fastener 82 bath

33 first support 83 sample holder

34 second support 84 measuring rod

40 first sensor holder 85 thermometer

41 displacement sensor 86 contact indicator

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings denote the same components or similar components.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, for simplicity and clarity of understanding, only one of the components having the same structure or function is schematically illustrated or labeled in some of the drawings.

In this document, "one" means not only "only one" but also a case of "more than one". In this document, "first", "second", and the like are used only for distinguishing one from another, and do not indicate their degree of importance, order, and the like.

Fig. 2 is a schematic configuration diagram for explaining an exemplary embodiment of the measuring apparatus. Referring to fig. 2, the measuring apparatus includes a holding body 10, a holding block 20, a bracket assembly, and a first sensor bracket 40. The clamping body 10 and the clamping block 20 can cooperate with each other to clamp a sample 70 to be measured. The bracket assembly is used for providing clamping force for clamping the body 10 and the clamping block 20 to clamp the sample 70 to be tested. The first sensor holder 40 is disposed on the holding body 10, and a displacement sensor 41 is mounted thereon to measure a displacement of the sample 70 to be measured due to bending deformation. The measuring device can measure the influence of the internal resistance of the bimetal element on the bending characteristic of the bimetal, and has simple structure and convenient production and use.

Specifically, the clamping body 10 and the clamping block 20 are made of heat-resistant and insulating materials, such as glass, ceramic, and the like. The bracket assembly includes a first bracket 33, a second bracket 34, a connector 31, and a fastener 32. The first bracket 33 and the second bracket 34 are connected by a connecting member 31. The first bracket 33 is coupled to the coupling hole 11 of the clamping body 10 by the coupling member 31. The portion of the connecting member 31 located in the connecting hole 11 can move toward the holding block 20. The fastener 32 is disposed on the first bracket 33, and is used for adjusting the magnitude of the clamping force between the clamping body and the clamping block. The first and

second brackets

33 and 34 may be U-shaped members, and the fastening member 32 may be a screw. The sample 70 to be measured is connected with two current connection wires for providing heating current for the sample 70 to be measured. One of the current connecting leads is also connected to a current sensor 60, and the current sensor 60 is capable of detecting a current flowing through the sample 70 to be measured. A second sensor mount 50 may also be provided on the clamp block 20. A temperature sensor 51 is mounted on the second sensor holder 50. The temperature sensor 51 is used for measuring the temperature of the sample 70 to be measured. The displacement sensor 41 and the temperature sensor 51 are preferably non-contact displacement sensors, so that the self weight of the sensors or the resistance of the sensors can be prevented from interfering with the measurement result, and the measurement accuracy can be improved. The measuring device is also provided with a recorder. The recorder is connected with the displacement sensor, the temperature sensor and the current sensor, and records the numerical values of the displacement sensor, the temperature sensor and the current sensor in real time to form a corresponding analysis table and analysis data.

The process of measuring the sample to be measured is as follows, the sample to be measured 70 connected with the current connection wire is put between the clamping body 10 and the clamping block 20. Tightening the fastener 32 to move the end portion thereof toward the clamp body 10 and press the clamp body 10; the clamping body 10 moves towards the clamping block 20 under the action of the fastener 32 and presses the clamping block 20 against the second bracket 34; the sample 70 to be measured is firmly held between the holding body 10 and the holding block 20. A heating current is supplied to the sample 70 to be measured to heat the sample 70 to be measured, and the current magnitude of the heating current is measured by the current sensor 60. The sample 70 to be measured is subjected to bending deformation, the displacement sensor 41 measures the displacement of one end of the sample 70 to be measured due to the deformation, and the temperature sensor 51 measures the temperature of the sample 70 to be measured. The recorder records the detected displacement and temperature.

Fig. 3 is a schematic structural view of the measuring apparatus of fig. 2 with the first and second supports removed. Referring to fig. 3, the length of the coupling hole of the clamp body 10 in the radial direction of the fastener 32 is greater than the outer diameter of the coupling member 31. The clamping body 10 is provided with a limit bump 12. The clamping block 20 is provided with a limiting groove matched with the limiting convex block 12. Through setting up spacing lug, not only can inject the degree of depth of the sample centre gripping that awaits measuring, can also restrict the relative motion between centre gripping body and the grip block for measuring device is more stable when the centre gripping awaits measuring the sample. The clamping block 20 is further provided with a positioning groove, and the positioning groove can accommodate the sample 70 to be tested, so that the sample 70 to be tested can be conveniently and rapidly placed.

The second bracket 34 may further be provided with a positioning rod, one end of the positioning rod is detachably fixed to the second bracket 34, and the other end of the positioning rod penetrates through the clamping block 20 and extends into the clamping body 10. Through setting up a locating lever, can make grip block, centre gripping body only can follow the radial direction relative motion of locating lever, convenient to use.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above list of details is only for the practical examples of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of the features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.

Claims

1. A measuring device for measuring the bending characteristics of a bimetallic element, comprising:

a clamping body (10) made of insulating material;

the clamping block (20) is used for being matched with the clamping body (10) to clamp a sample (70) to be tested, and the clamping block (20) is made of an insulating material;

a bracket assembly for clamping the clamping body (10) and the clamping block (20), the bracket assembly comprising a connector (31) and a fastener (32), the bracket assembly being connected to the clamping body (10) via the connector (31), the fastener (32) being used for adjusting the clamping force between the clamping body (10) and the clamping block (20); and

a first sensor support (40) disposed on one of the clamping body (10) and the clamping block (20), a displacement sensor (41) disposed on the first sensor support (40), the displacement sensor (41) being configured to measure a displacement of a deformation portion of the sample (70) to be measured.

2. A measuring device for measuring the bending properties of a bimetal element according to claim 1, further comprising a current sensor (60), said current sensor (60) being adapted to measure the value of current flowing through said sample (70) to be measured.

3. A measuring device for measuring the bending properties of a bimetallic element as in claim 1, further comprising:

a second sensor support (50) disposed on the other of the clamping body (10) and the clamping block (20), a temperature sensor (51) disposed on the second sensor support (50), the temperature sensor (51) being configured to measure a temperature of the sample (70).

4. A measuring device for measuring the bending properties of a bimetallic element according to claim 3, characterised in that the displacement sensor (41) and the temperature sensor (51) are non-contact sensors.

5. A measuring device for measuring the bending characteristics of a bimetallic element according to claim 4, characterised in that it also comprises a recorder connected to said displacement sensor (41) and to said temperature sensor (51).

6. A measuring device for measuring the bending characteristics of bimetallic elements according to claim 1, characterised in that said clamping body (10) is provided with a coupling hole (11), said support assembly further comprising:

a first bracket (33) on which the fastening member (32) is provided, the first bracket (33) being connected to the connection hole (11) through the connection member (31); and

a second bracket (34) connected to the first bracket (33) by the connecting member (31).

7. The measuring device for measuring the bending properties of bimetallic elements according to claim 6, characterized in that it is able to act on the clamping body (10) through the fastener (32) and on the clamping block (20) through the second bracket (34) to clamp the sample (70) to be measured.

8. A measuring device for measuring the bending properties of a bimetal element according to claim 7, characterized in that the part of the connecting piece (31) located in the connecting hole (11) is movable in the direction of the clamping block (20).

9. The measuring device for measuring the bending properties of a bimetallic element according to claim 8, characterised in that the first bracket (33) and the second bracket (34) are U-shaped pieces and the fastening means (32) are screws.

10. The device for measuring the bending characteristics of a bimetallic element according to claim 8, characterised in that the second support (34) is further provided with a positioning rod, one end of which can penetrate the clamping block (20) and protrude inside the clamping body (10).

11. The device for measuring the bending characteristics of a bimetallic element according to claim 8, characterised in that the clamping body (10) is provided with a limit projection (12) and the clamping block (20) is provided with a limit groove cooperating with the limit projection (12).

12. The device for measuring the bending characteristics of bimetallic elements according to claim 11, characterized in that said clamping block (20) is provided with a positioning slot capable of receiving said sample (70) to be measured.