CN217877433U - Testing device for measuring precision of thimble displacement sensor - Google Patents

Abstract

The utility model discloses an inspection device for measuring accuracy of a thimble displacement sensor, which comprises a thimble displacement sensor arranged on a mounting base, and also includes a baffle, a positioning piece and a scale; the baffle and the positioning piece are arranged on the upper surface of the mounting base , respectively located at both ends of the mounting seat, the elastic thimble of the thimble displacement sensor is connected to the baffle; the other end of the thimble displacement sensor is connected to one end of the threaded rod; the threaded rod is covered with a sleeve with internal thread; the scale is set on the installation seat, and parallel to the thimble displacement sensor. Read the translational distance of the thimble displacement sensor through the scale, combine the values detected before and after the displacement of the thimble displacement sensor, compare the measurement results of the two, check the measurement accuracy of the displacement sensor, and ensure the measurement accuracy of the thimble displacement sensor during use. On the other hand, this device can be used in experimental teaching to demonstrate the measurement principle of the thimble displacement sensor for students, which is convenient for teaching.

Description

An inspection device for the measurement accuracy of a thimble displacement sensor

technical field

The utility model relates to the field of sensor detection, in particular to an inspection device for measuring accuracy of a thimble displacement sensor.

Background technique

Displacement sensor, also known as linear sensor, is a linear device belonging to metal induction. The function of the sensor is to convert various measured physical quantities into electricity. In the production process, the measurement of displacement is generally divided into two types: measuring the physical size and mechanical displacement. kind. The thimble displacement meter is an intelligent digital inductance frequency modulation displacement meter, which is composed of a displacement meter, a measuring rod, a fixing kit, an elastic thimble, and a protective cover. It is widely used to observe the relative displacement changes of steel structures, tanks, walls, foundations and other objects that cannot be attached and installed. The thimble type displacement meter fixes the elastic thimble at the fixed point and the measured point, and the internal spring of the sensor is connected. When the measured point is displaced, the thimble rod stretches the thimble rod in the displacement sensor through the spring, and the position of the thimble rod changes. , the inductance frequency output by the coil outside the thimble measuring rod will also change accordingly, and the built-in data processor of the sensor can perform AD conversion on the electrical signal and convert it into digital information. In actual use, there is no mechanical device that can detect the measurement accuracy of the thimble displacement meter, and cannot guarantee the measurement accuracy of the thimble displacement meter. Moreover, when explaining the principle of the thimble displacement meter, it only stays in theoretical knowledge , there is no device for demonstration, which is not easy for students to understand.

Utility model content

In order to solve the above problems, the purpose of this utility model is to provide an inspection device for the measurement accuracy of the thimble displacement sensor, to detect the measurement accuracy of the thimble displacement sensor, to ensure the accuracy of the measurement data, and to facilitate teaching explanations and demonstrations.

In order to achieve the above object, the technical scheme adopted by the utility model:

A device for checking the measurement accuracy of a thimble displacement sensor, comprising a thimble displacement sensor arranged on a mounting base, and also including a baffle, a positioning piece and a scale; the baffle and the positioning piece are arranged on the upper surface of the mounting base, They are respectively located at both ends of the mounting seat, and the thimble displacement sensor is arranged between the baffle and the positioning member; the elastic thimble of the thimble displacement sensor is connected to the baffle; the other of the thimble displacement sensor One end is connected to one end of the threaded rod; the other end of the threaded rod passes through the positioning piece; the threaded section between the threaded rod and the positioning piece is covered with a sleeve with internal thread; the scale is set on the on the mounting base and parallel to the thimble displacement sensor.

Preferably, the positioning member is provided with a positioning hole, and the threaded rod passes through the positioning hole; and the positioning hole is on the same axis as the thimble displacement sensor.

Preferably, the outer diameter of the sleeve is larger than the diameter of the positioning hole.

Preferably, a pointer is provided on the side of the thimble displacement sensor close to the scale; the pointer points to the scale.

Preferably, a thimble groove is provided on the baffle, and the thimble of the thimble displacement sensor is set in the thimble groove.

The beneficial effects of the utility model:

The utility model provides an inspection device for the measurement accuracy of a thimble displacement sensor. The baffle plate is used to connect with the elastic thimble of the thimble displacement sensor, so that the measurement position of the thimble displacement sensor is kept fixed, and the accuracy of the device inspection is improved. The other end of the thimble displacement sensor is connected to the threaded rod, and a sleeve with internal thread is set on the threaded section between the threaded rod and the positioning piece; the sleeve is in contact with the positioning piece, and the threaded rod is adjusted by rotating the sleeve. After the adjustment is completed, the sleeve can also play a fixed role at the same time. The telescopic adjustment of the threaded rod drives the translation of the displacement sensor, and the positioning member ensures that the threaded rod will not be deflected during the telescopic adjustment, which will affect the detection result. Read the translational distance of the thimble displacement sensor through the scale, combine the values detected before and after the displacement of the thimble displacement sensor, compare the measurement results of the two, check the measurement accuracy of the displacement sensor, and ensure the measurement accuracy of the thimble displacement sensor during use. On the other hand, this device can be used in experimental teaching to demonstrate the measurement principle of the thimble displacement sensor for students, which is convenient for teaching.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is the structural representation of the positioning member of the present utility model;

Fig. 3 is a schematic diagram of the baffle structure of the present invention.

In the figure: 1. mounting seat; 2. thimble displacement sensor; 3. elastic thimble; 4. baffle; 5. scale; 6. threaded rod; 7. pointer; 8. positioning piece; 9. sleeve; 10. Positioning hole; 11, thimble groove.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further elaborated below in conjunction with the accompanying drawings. In describing the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , are constructed and operated in a specific orientation and therefore cannot be construed as limiting the invention.

Example 1

As shown in Figures 1-3, this embodiment provides an inspection device for the measurement accuracy of a thimble displacement sensor, which includes a thimble displacement sensor 2 arranged on a mounting base 1, and also includes a baffle 4, a positioning member 8 and a scale 5 The baffle plate 4 and the positioning member 8 are arranged on the upper surface of the mounting seat 1, respectively located at both ends of the mounting seat 1, and the thimble displacement sensor 2 is arranged on the baffle plate 4 and the positioning member 8 between; the elastic thimble of the thimble displacement sensor 2 is connected to the baffle plate 4; the other end of the thimble displacement sensor 2 is connected to one end of the threaded rod 6; the other end of the threaded rod 6 passes through the positioning member 8 ; The threaded section between the threaded rod 6 and the positioning member 8 is covered with a sleeve 9 with an internal thread; the scale 5 is arranged on the mounting seat 1 and is parallel to the thimble displacement sensor 2 .

An inspection device for the measurement accuracy of a thimble displacement sensor. The elastic thimble 3 of the thimble displacement sensor 2 is shrinkable, and the mounting base 1 provides a mounting platform for other parts; The elastic thimble 3 of the displacement sensor 2 is connected to ensure that the device will not deviate in position during the inspection process and ensure the accuracy of the inspection. One end of the threaded rod 6 is connected to the other end of the thimble displacement sensor 2, and the other end of the threaded rod 6 is positioned by the positioning piece 8; the threaded section between the threaded rod 6 and the positioning piece 8 is covered with a sleeve 9 with an internal thread , the sleeve 9 abuts against the positioning member 8. On the one hand, by rotating the sleeve 9, the matching state of the threaded rod 6 and the sleeve 9 is adjusted to adjust the threaded rod 6; on the other hand, through the sleeve 9 and the positioning member 8 Abutment ensures that the threaded rod 6 is fixed when it is not telescopically adjusted. The threaded rod 6 drives the thimble displacement sensor 2 to move in translation, simulating the actual use state of the thimble displacement sensor 2, and the positioning part 8 ensures that the threaded rod 6 does not shift in position during the process of driving the thimble displacement sensor 2, thereby affecting the inspection accuracy of the device , to ensure the accuracy of the overall device detection. It is worth noting that, since the elastic thimble 3 of the thimble displacement sensor 2 itself is stretchable, the sleeve 9 between the threaded rod 6 and the positioning member 8 will always be in contact with the positioning member 8 . A scale 5 is also arranged on the upper surface of the mounting base 1, and the scale 5 is arranged parallel to the sensor. The scale height of the scale 5 is the same height as the thimble displacement sensor 2, which is convenient for data reading; it can be read by reading the thimble displacement sensor 2, calculate the displacement of the thimble displacement sensor 2 from the readings of the scale 5 before and after displacement; The measurement accuracy of the displacement sensor 2 ensures that the thimble displacement sensor 2 can measure accurately during use, thereby ensuring the quality of the project. In addition, the device can be used for teaching and explaining the principle of the thimble displacement sensor 2 , and through experimental demonstration, it is convenient for students to understand the working principle of the thimble displacement sensor 2 .

Example 2

As shown in Figures 1-3, this embodiment is developed on the basis of the above-mentioned embodiments. Specifically, this embodiment provides an inspection device for a thimble displacement sensor, and the positioning member 8 is provided with a positioning hole. 10 , the threaded rod 6 passes through the positioning hole 10 ; and the positioning hole 10 is on the same axis as the thimble displacement sensor 2 . The setting of the positioning hole 10 ensures that the threaded rod 6 will not shift in position during the process of driving the thimble displacement sensor 2 to translate, so that the thimble displacement sensor 2 always maintains a linear displacement and improves the detection accuracy of the device. It is worth noting that the size of the positioning hole 10 is set according to the threaded rod 6. It should be ensured that the threaded rod 6 will not be stuck when stretching, and the position of the threaded rod 6 can be well restricted so that it There is no shift in position during adjustment.

Preferably, the outer diameter of the sleeve 9 is larger than the diameter of the positioning hole 10 . During use, due to the stretchability of the elastic thimble, the sleeve is always in contact with the positioning member. The sleeve 9 ensures that the position of the threaded rod 6 is fixed when the position is not adjusted, and there will be no position slip due to the elastic force of the elastic thimble. .

Preferably, a pointer 7 is provided on the side of the thimble displacement sensor 2 close to the scale 5 ; the pointer 7 points to the scale 5 . The setting of the pointer 7 is more convenient to read the value on the scale 5. It is worth noting that the height of the pointer 7 is consistent with the height of the scale 5, which is convenient for reading.

Preferably, the baffle plate 4 is provided with a thimble groove 11, the elastic thimble 3 of the thimble displacement sensor 2 is arranged in the thimble groove 11, and since the elastic thimble 3 has shrinkage, the elastic thimble 3 is always set In the thimble groove 11, the thimble groove 11 ensures that during the translation process of the thimble displacement sensor 2, the displacement of the elastic thimble 3 will not slip, which will affect the detection result; it is worth noting that the size of the thimble groove 11 depends on the size of the thimble The size is set, and the utility model is not limited.

Example 3

This embodiment is developed on the basis of the above embodiments. Specifically, in some preferred embodiments, the thimble displacement sensor 2 in this detection device can be replaced by a laser displacement sensor to detect the measurement accuracy of the laser sensor. The groove on the baffle can be used as the laser point of the laser sensor. During the experiment, by observing the position of the laser point of the laser sensor, it is ensured that the position of the laser sensor does not shift during the displacement process, which will affect the detection results of the device. This device can By replacing the tested part, the measurement accuracy of various similar devices can be tested, the experimental cost can be saved, and the economic effect can be improved.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A test device for measuring accuracy of a thimble displacement sensor, comprising a thimble displacement sensor (2) arranged on a mount (1), characterized in that: it also includes a baffle plate (4), a positioning member (8) and a scale (5); the baffle (4) and the locator (8) are arranged on the upper surface of the mounting seat (1), respectively located at both ends of the mounting seat (1), and the thimble displacement sensor ( 2) set between the baffle (4) and the positioning piece (8); the elastic thimble (3) of the thimble displacement sensor (2) is connected to the baffle (4); the thimble displacement sensor ( 2) the other end is connected to one end of the threaded rod (6); the other end of the threaded rod (6) passes through the positioning piece (8); the thread between the threaded rod (6) and the positioning piece (8) A sleeve (9) with an internal thread is sheathed on the section; the scale (5) is arranged on the mounting seat (1) and is parallel to the thimble displacement sensor (2). 2. The inspection device for the measurement accuracy of a thimble displacement sensor according to claim 1, characterized in that: the positioning member (8) is provided with a positioning hole (10), and the threaded rod (6) passes through the The positioning hole (10); and the positioning hole (10) is on the same axis as the thimble displacement sensor (2). 3. The inspection device for measuring accuracy of the thimble displacement sensor according to claim 2, characterized in that: the outer diameter of the sleeve (9) is larger than the diameter of the positioning hole (10). 4. The inspection device of a kind of thimble displacement sensor measurement accuracy according to claim 1, characterized in that: said thimble displacement sensor (2) is provided with a pointer (7) near the side of said scale (5); Said pointer (7) points to said scale (5). 5. The inspection device for measuring accuracy of a thimble displacement sensor according to claim 1, characterized in that: said baffle plate (4) is provided with a thimble groove (11), and said thimble displacement sensor (2) The thimble is arranged in the thimble groove (11).

Images