Small force value measuring device

Abstract

The utility model relates to a small force value measuring device which comprises a base and a stand column fixed on the base, and further comprises an equal armed lever, the equal armed lever is horizontally hinged to the upper portion of the stand column, a balance pointer is arranged on the equal armed lever and vertically fixed to the center of the equal armed lever, and a weight tray and a reverse frame are hung at the two ends of the equal armed lever respectively. The reversing frame comprises a top plate, a vertical rod and a bottom plate, the lifting frame comprises an upper plate, a connecting rod and a lower plate, the lifting frame is driven by a power device fixed on the base and is guided by the vertical rod to vertically move up and down, and a tested device station is formed between the bottom plate and the upper plate. According to the utility model, a small force value can be accurately, rapidly and reliably measured. The device is simple in structure, convenient to use, high in precision and stable in data, and is especially suitable for force value verification in a range of 0.01-10N.

Description

Technical Field

[0001] The utility model relates to force value verification, in particular to a small force value measuring device. Background Art

[0002] Small force dynamometers are usually used in materials science, biomedicine and other fields. With the development of science and technology, small force applications are becoming more and more widespread. Therefore, the verification and calibration of small forces are becoming more and more important. To a large extent, the verification and calibration of small forces are directly measured by weights, which makes the verification and calibration work extremely difficult. Not only is the accuracy low, but the stability is also poor, which often cannot meet the objective needs. Therefore, it is very necessary to design a small force measurement device with simple structure, easy use, high accuracy and stable data. Utility Model Content

[0003] The utility model aims to provide a small force value measuring device which has simple structure, convenient use, high precision and stable data.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a small force value measuring device, including a base and a column fixed on the base, characterized in that it also includes an equal-arm lever, the equal-arm lever is horizontally hinged at the upper part of the column, a balance pointer is arranged on the equal-arm lever, the balance pointer is vertically fixed at the center part of the equal-arm lever, a weight tray and a reverse frame are respectively suspended at both ends of the equal-arm lever, the reverse frame includes a top plate, a vertical rod and a bottom plate, a lifting frame includes an upper plate, a connecting rod and a lower plate, the lifting frame is driven by a power device fixed on the base and guided by the vertical rod to move vertically up and down, and a work station for a device under test is formed between the bottom plate and the upper plate.

[0005] Furthermore, a counterweight block is also arranged on the equal-arm lever.

[0006] Furthermore, the column is a quadrangular prism.

[0007] Furthermore, the power device is a stepping motor.

[0008] Furthermore, the displacement of the lifting frame is ±50 mm.

[0009] The working process of the utility model is as follows: a small force sensor to be measured is placed on the bottom plate of the reverse frame, and then leveled, the counterweight is moved to a suitable position so that both ends of the balance are in a balanced state, and then the counterweight is locked; a weight of a required force value is placed in the weight tray, and the power device is started to drive the lifting frame to descend until the upper plate of the lifting frame just contacts the lifting frame, at which time the balance is in an unbalanced state due to the weight placed on the left end; the power device causes the lifting frame to continue to slowly descend until both ends of the balance are pulled to a balanced state, and then the power device stops, at which time, the pressure on the small force sensor to be measured is exactly equal to the weight of the weight placed in the weight tray.

[0010] The utility model can accurately, quickly and reliably measure small force values. The utility model has simple structure, convenient use, high precision and stable data, and is particularly suitable for force value verification within the range of 0.01N to 10N. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the cooperation between the reverse frame and the lifting frame of the utility model.

[0013] In the figure: 1-base; 2-column; 3-equal-arm lever; 3.1-balance pointer; 4-weight tray; 5-reverse frame; 5.1-top plate; 5.2-upright pole; 5.3-bottom plate; 6-lifting frame; 6.1-upper plate; 6.2-connecting rod; 6.3-lower plate; 7-power device; 8-counterweight block. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the embodiments should not be construed as limiting the present invention.

[0015] The small force value measuring device shown in the figure includes a base 1 and a column 2 fixed on the base 1, and also includes an equal-arm lever 3. The equal-arm lever 3 is horizontally hinged on the upper part of the column 2. A balance pointer 3.1 is arranged on the equal-arm lever 3. The balance pointer 3.1 is vertically fixed to the central part of the equal-arm lever 3. A weight tray 4 and a reverse frame 5 are respectively suspended at both ends of the equal-arm lever 3. The reverse frame 5 includes a top plate 5.1, a vertical rod 5.2 and a bottom plate 5.3. The lifting frame 6 includes an upper plate 6.1, a connecting rod 6.2 and a lower plate 6.3. The lifting frame 6 is driven by a power device 7 fixed on the base 1 and guided by the vertical rod 5.2 to move vertically up and down. A device under test station is formed between the bottom plate 5.3 and the upper plate 6.1.

[0016] A preferred embodiment is: in the above solution, a counterweight block 8 is also provided on the equal-arm lever 3 .

[0017] A preferred embodiment is: in the above solution, the column 2 is a quadrangular prism.

[0018] A preferred embodiment is: in the above scheme, the power device 7 is a stepping motor.

[0019] A preferred embodiment is: in the above solution, the displacement of the lifting frame 6 is ±50 mm.

[0020] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A small force value measuring device, comprising a base (1) and a column (2) fixed on the base (1), characterized in that: The invention also comprises an equal-arm lever (3), the equal-arm lever (3) being horizontally hinged on the upper part of the column (2), a balance pointer (3.1) being arranged on the equal-arm lever (3), and the balance pointer (3.1) being vertically fixed on the central part of the equal-arm lever (3), a weight tray (4) and a reverse frame (5) being respectively suspended at both ends of the equal-arm lever (3), the reverse frame (5) comprising a top plate (5.1), a vertical rod (5.2) and a bottom plate (5.3), a lifting frame (6) comprising an upper plate (6.1), a connecting rod (6.2) and a lower plate (6.3), the lifting frame (6) being driven by a power device (7) fixed on the base (1) and guided by the vertical rod (5.2) to move vertically up and down, a device under test station being formed between the bottom plate (5.3) and the upper plate (6.1), and a counterweight block (8) being also arranged on the equal-arm lever (3).

2. The small force measuring device according to claim 1, characterized in that: The column (2) is a quadrangular column.

3. The small force measuring device according to claim 1 or 2, characterized in that: The power device (7) is a stepping motor.

4. The small force measuring device according to claim 1 or 2, characterized in that: The displacement of the lifting frame (6) is ±50 mm.

5. The small force measuring device according to claim 3, characterized in that: The displacement of the lifting frame (6) is ±50 mm.

Images