CN215572670U

CN215572670U - Piezoelectric proportional valve displacement sensor linearity testing device

Info

Publication number: CN215572670U
Application number: CN202120911498.2U
Authority: CN
Inventors: 贺晨光; 顾守东; 刘泽康
Original assignee: Changzhou Gaokai Electronics Co ltd
Current assignee: Changzhou Gaokai Electronics Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-01-18
Anticipated expiration: 2031-04-29

Abstract

The utility model provides a linearity testing device for a displacement sensor of a piezoelectric proportional valve, which comprises a fixed block, a sliding block, a fixed seat, a knob and a base, wherein the fixed block is fixedly connected with a valve core of the piezoelectric proportional valve; the sliding block is fixedly connected with the fixed block and can slide relative to the fixed seat; the knob is arranged on the fixed seat, and the sliding block moves relative to the fixed seat by rotating the knob; the fixing base is fixedly installed on the base, the problem that no device for testing the linearity of the piezoelectric proportional valve displacement sensor exists in the market is solved, the blank of the device for testing the linearity of the piezoelectric proportional valve displacement sensor in the market is filled, the device is convenient to measure and use, and the measurement precision is high.

Description

Piezoelectric proportional valve displacement sensor linearity testing device

Technical Field

The utility model relates to the technical field of detection of piezoelectric proportional valves, in particular to a linearity testing device for a displacement sensor of a piezoelectric proportional valve.

Background

Be provided with displacement sensor in the piezoelectric proportional valve for detect the position distance of case, displacement sensor's principle is through hall components and parts with displacement data conversion to electric quantity signal, but the linearity of signal of telecommunication is poor, need detect and collect data to it constantly, and carry out debugging and correction on next step with the data of collecting, but there is not the device to piezoelectric proportional valve displacement sensor linearity test yet on the existing market.

SUMMERY OF THE UTILITY MODEL

The linearity testing device for the piezoelectric proportional valve displacement sensor disclosed by the utility model solves the problem that no linearity testing device for the piezoelectric proportional valve displacement sensor exists in the market, fills the blank of the linearity testing device for the piezoelectric proportional valve displacement sensor in the market, and is convenient to measure and use and high in measurement precision.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model discloses a linearity testing device for a displacement sensor of a piezoelectric proportional valve, which comprises a fixed block, a sliding block, a fixed seat, a knob and a base, wherein the fixed block is fixedly connected with a valve core of the piezoelectric proportional valve; the sliding block is fixedly connected with the fixed block and can slide relative to the fixed seat; the knob is arranged on the fixed seat, and the sliding block slides relative to the fixed seat by rotating the knob; the fixing seat is fixedly arranged on the base.

Further, the linearity testing device for the piezoelectric proportional valve displacement sensor further comprises a base, and the base is fixedly installed on the base.

Furthermore, a first scale bar is arranged on the fixed seat.

Furthermore, a second scale bar is arranged on the sliding block, and the second scale bar is opposite to the first scale bar in position.

Furthermore, the slider is T type groove for the terminal surface of fixing base, T type groove is followed the slider length direction extends.

Furthermore, a groove extending along the length direction is formed in the fixing seat, and the groove is opposite to the T-shaped groove.

Further, T type groove with be provided with the gear plate between the recess, the gear plate with slider fixed connection, the gear plate orientation be provided with the rack on the terminal surface of base.

Furthermore, the end of the knob, which is in contact with the gear plate, is provided with helical teeth, and the helical teeth are meshed with the rack.

The beneficial technical effects are as follows:

1. the utility model discloses a linearity testing device for a displacement sensor of a piezoelectric proportional valve, which comprises a fixed block, a sliding block, a fixed seat, a knob and a base, wherein the fixed block is fixedly connected with a valve core of the piezoelectric proportional valve; the sliding block is fixedly connected with the fixed block and can slide relative to the fixed seat; the knob is arranged on the fixed seat, and the sliding block moves relative to the fixed seat by rotating the knob; the fixed seat is fixedly arranged on the base, so that the problem that no device for testing the linearity of the piezoelectric proportional valve displacement sensor exists in the market is solved, the blank of the device for testing the linearity of the piezoelectric proportional valve displacement sensor in the market is filled, the measurement is convenient to use, and the measurement precision is high;

2. according to the utility model, the first scale bar is arranged on the fixed seat, the second scale bar is arranged on the sliding block, and the second scale bar is opposite to the first scale bar in position, so that a tester can conveniently observe relative displacement.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic overall structure diagram of a device for testing the linearity of a displacement sensor of a piezoelectric proportional valve according to the present invention;

fig. 2 is a schematic structural diagram of a sliding block of the device for testing the linearity of the displacement sensor of the piezoelectric proportional valve, which is disclosed by the utility model;

fig. 3 is a schematic structural diagram of a fixing seat of the linearity testing device for the piezoelectric proportional valve displacement sensor according to the present invention;

fig. 4 is a schematic structural diagram of a gear plate of the linearity testing device for the piezoelectric proportional valve displacement sensor according to the present invention;

FIG. 5 is a schematic structural diagram of a device for testing linearity of a piezoelectric proportional valve displacement sensor according to the present invention, in which a gear plate is engaged with a knob;

fig. 6 is a cross-sectional view of a device for testing the linearity of a displacement sensor of a piezoelectric proportional valve according to the present invention.

The device comprises a fixed block 1, a sliding block 2, a T-shaped groove 21, a fixed seat 3, a groove 31, a knob 4, a helical tooth 41, a base 5, a base 6, a gear plate 7, a rack 71, a piezoelectric proportional valve 8, a valve core 81 and a displacement sensor 82.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The utility model discloses a linearity testing device for a piezoelectric proportional valve displacement sensor, which comprises a fixed block 1, a sliding block 2, a fixed seat 3, a knob 4 and a base 5, and is shown in figures 1 and 6.

As an embodiment of the present invention, the fixed block 1 is fixedly connected to a spool 81 of the piezoelectric proportional valve 8; the slider 2 with fixed block 1 fixed connection to be configured as can slide for fixing base 3, specifically, see fig. 2, the terminal surface of slider 2 for fixing base 3 is T type groove 21, and T type groove 21 extends along slider 2 length direction, and preferably, slider 2 is provided with first scale bar on the side towards test operation personnel for it is more convenient and the measuring accuracy is higher to test.

As an embodiment of the present invention, the fixing base 3 is fixedly installed on the base 5, the fixing base 3 is provided with a groove 31 extending along the length direction, referring to fig. 3, the T-shaped groove 21 is opposite to the groove 31, preferably, a first scale bar is arranged on the side surface of the fixing base 3 facing the test operator, the first scale bar arranged on the fixing base 1 is opposite to the second scale bar arranged on the sliding block 2, and both are opposite to the knob 4, so that the test operator can observe the relative displacement conveniently; a gear plate 7 is arranged between the T-shaped groove 21 and the groove 31, the gear plate 7 is fixedly connected with the sliding block 2, and referring to fig. 4, a rack 71 is arranged on the end face, facing the base 5, of the gear plate 7; the knob 4 is mounted on the fixed seat 3, and the slider 2 slides relative to the fixed seat 3 by rotating the knob, specifically, referring to fig. 5, the end of the knob 4 contacting the gear plate 7 is provided with helical teeth 41, and the helical teeth 41 are engaged with the rack 71.

As the preferred embodiment of the utility model, the linearity testing device of the piezoelectric proportional valve displacement sensor further comprises a base 6, and the base 5 is fixedly arranged on the base 6.

The working process of the linearity testing device for the piezoelectric proportional valve displacement sensor disclosed by the utility model is as follows:

the valve core 81 of the piezoelectric proportional valve 8 is fixedly connected with the fixed block 1, the rotary knob 4 is rotated by a test operator, helical teeth 41 on the rotary knob 4 are meshed with racks 71 on the gear plate 7, so that the gear plate 7 slides for a certain distance, the gear plate 7 is fixedly connected with the sliding block 2, and further the sliding block 2 is driven to slide for a certain distance relative to the fixed seat 3, because the sliding block 2 is fixedly connected with the fixed block 1, the sliding block 2 moves to drive the sliding block 1 to slide, so that the valve core of the piezoelectric proportional valve moves for a certain distance, signals of the piezoelectric proportional valve displacement sensor are collected, when the sliding block slides for a certain position, the signals of the piezoelectric proportional valve displacement sensor are changed, the recorded moving distance and the recorded electric signal change parameters are drawn into a curve graph, the linearity of the curve graph is observed, and the linearity of the piezoelectric proportional valve displacement sensor can be intuitively obtained.

The linearity testing device for the piezoelectric proportional valve displacement sensor disclosed by the utility model fills the blank of the linearity testing device for the piezoelectric proportional valve displacement sensor in the market, and is convenient to measure and use and high in measurement precision.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a piezoelectricity proportional valve displacement sensor linearity testing arrangement which characterized in that includes:

the fixed block (1), the said fixed block (1) connects the valve core (81) of the piezoelectric proportional valve (8) fixedly;

the sliding block (2) is fixedly connected with the fixed block (1) and is configured to slide relative to the fixed seat (3);

a fixed seat (3);

the knob (4) is mounted on the fixed seat (3), and the sliding block (2) slides relative to the fixed seat (3) by rotating the knob (4);

the fixing seat (3) is fixedly arranged on the base (5).

2. The linearity testing device of the piezoelectric proportional valve displacement sensor is characterized by further comprising a base (6), wherein the base (5) is fixedly installed on the base (6).

3. The linearity testing device for the displacement sensor of the piezoelectric proportional valve is characterized in that a first scale bar is arranged on the fixed seat (3).

4. The linearity testing device for the displacement sensor of the piezoelectric proportional valve is characterized in that a second scale bar is arranged on the sliding block (2) and is opposite to the first scale bar in position.

5. The linearity testing device for the displacement sensor of the piezoelectric proportional valve is characterized in that the end face of the sliding block (2) relative to the fixed seat (3) is a T-shaped groove (21), and the T-shaped groove (21) extends along the length direction of the sliding block (2).

6. The linearity testing device for the displacement sensor of the piezoelectric proportional valve is characterized in that a groove (31) extending in the length direction is formed in the fixed seat (3), and the groove (31) is opposite to the T-shaped groove (21).

7. The linearity testing device for the displacement sensor of the piezoelectric proportional valve is characterized in that a gear plate (7) is arranged between the T-shaped groove (21) and the groove (31), the gear plate (7) is fixedly connected with the sliding block (2), and a rack (71) is arranged on the end face, facing the base (5), of the gear plate (7).

8. The linearity testing device of the piezoelectric proportional valve displacement sensor is characterized in that one end, in contact with the gear plate (7), of the knob (4) is provided with inclined teeth (41), and the inclined teeth (41) are meshed with the rack (71).