CN210347035U

CN210347035U - Spring detection device

Info

Publication number: CN210347035U
Application number: CN201921438510.1U
Authority: CN
Inventors: 巩小康; 巩日道; 唐柏芬
Original assignee: Yangzhou Hengwang Hardware Machinery Co ltd
Current assignee: Yangzhou Hengwang Hardware Machinery Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-04-17
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a spring detection device, include: a base for placement on a work platform; a top plate disposed above the base; a movable plate located between the top plate and the base and capable of moving vertically; the piston rod of the oil cylinder penetrates through the top plate downwards and is connected to the movable plate, and the movable plate is driven by the piston rod to move up and down; the strain gauge is annular and is arranged on the lower plate surface of the top plate; a distance sensor disposed on the base for measuring a distance to the top plate; wherein: the spring is arranged between the movable plate and the base, and the upper end of the spring is abutted to the strain gauge.

Description

Spring detection device

Technical Field

The utility model relates to a detect spring elastic coefficient's device.

Background

The spring constant index of the spring is very important for the use of the spring, for example, when the spring is used as the force application member, if the spring constant is stable and uniform, this enables the spring to provide a linearly varying force, and if the spring constant is unstable and non-uniform, the spring cannot provide the linearly varying force. At present, the device for detecting the spring constant of the spring is generally static, that is, the spring constant of the spring is detected only by detecting the elastic force of the spring at a certain expansion and contraction amount.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem that exists among the prior art, the embodiment of the utility model provides a spring detection device.

For solving the technical problem, the embodiment of the utility model adopts the following technical scheme:

a spring testing apparatus comprising:

a base for placement on a work platform;

a top plate disposed above the base;

a movable plate located between the top plate and the base and capable of moving vertically;

the piston rod of the oil cylinder penetrates through the top plate downwards and is connected to the movable plate, and the movable plate is driven by the piston rod to move up and down;

the strain gauge is annular and is arranged on the lower plate surface of the top plate;

a distance sensor disposed on the base for measuring a distance to the top plate; wherein:

the spring is arranged between the movable plate and the base, and the upper end of the spring is abutted to the strain gauge.

Preferably, the lower end of the piston rod of the cylinder is connected by a hinge mechanism.

Preferably, the hinge mechanism includes:

the base body is fixed on the movable plate, and a spherical recess is formed in the upper end face of the base body;

the ball head is formed at the lower end of the piston rod and is embedded in the spherical recess;

and the pressing plate is fixed at the upper end of the base body by a fastener so as to limit the ball head from falling out of the spherical recess.

Preferably, a plurality of guide posts are arranged between the base and the top plate, and the guide posts penetrate through the movable plate to guide the movable plate.

Preferably, the guide posts comprise four, and four guide posts are arranged in a matrix.

Preferably, the bottom of roof is provided with first spacing post, the base with the position that first spacing post is corresponding is provided with the spacing post of second, first spacing post certainly the upper end of spring stretches into one section, the spacing post of second certainly the lower extreme of spring stretches into one section.

Preferably, the oil cylinder is fixed on the top plate through a first flange plate.

Preferably, the base is fixed to the movable plate by a second flange.

Preferably, the distance sensor is an infrared distance sensor.

Preferably, a reference column is disposed at a position of the movable plate opposite to the distance sensor, and the distance sensor is used for measuring a distance from a lower end surface of the reference column.

Compared with the prior art, the utility model discloses a spring detection device's beneficial effect is: borrow by the utility model provides a whether the device can detect the elastic coefficient of spring even, promptly, whether the elasticity and the compressive capacity of spring are linear relation.

The summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments, by way of example and not by way of limitation, and together with the description and claims, serve to explain the embodiments of the invention. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

Fig. 1 is a schematic structural diagram of a spring detection device according to an embodiment of the present invention.

Fig. 2 is a usage state diagram of the spring detection device according to the embodiment of the present invention.

Reference numerals:

10-a base; 20-a top plate; 30-a movable plate; 40-oil cylinder; 41-a piston rod; 42-a first flange; 50-a hinge mechanism; 51-a seat body; 52-ball head; 53-a platen; 54-a second flange; 60-distance sensors; 70-a guide post; 80-a reference column; 91-a first limit post; 92-a second restraint post; 100-spring.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1, the disclosed embodiment of the present invention discloses a spring detection device, which is used for detecting the elastic coefficient index of a spring 100. The device includes: the device comprises a base 10, a top plate 20, a movable plate 30, an oil cylinder 40, a strain gauge and a distance sensor 60.

The base 10 is used for being placed on a working platform; the top plate 20 is arranged above the base 10, and the four guide posts 70 arranged in a matrix are arranged between the top plate 20 and the base 10; the movable plate 30 is disposed between the top plate 20 and the base 10, and the four guide posts 70 penetrate through the movable plate 30, so that the movable plate 30 can strictly move up and down under the guidance of the guide posts 70. The cylinder body of the oil cylinder 40 is installed on the top plate 20, the piston rod 41 of the oil cylinder 40 downwardly penetrates through the top plate 20, the lower end of the piston rod 41 is connected to the movable plate 30, and the movable plate 30 is driven by the oil cylinder 40 to move up and down.

The strain gauge is disposed on the lower plate surface of the movable plate 30, the spring 100 to be tested is disposed between the movable plate 30 and the base 10, and the upper end of the spring 100 abuts against the strain gauge, in a preferred embodiment, a pad is disposed between the strain gauge and the spring 100 to make the strain gauge stressed more uniformly.

The distance sensor 60 is disposed on the base 10 for detecting a distance between the base and the movable plate 30, and thereby obtaining a compression amount of the spring 100.

The working principle of the above device is described as follows:

as shown in fig. 2, the piston rod 41 of the cylinder 40 is extended, and the distance from the movable plate 30 is detected by the distance sensor 60, so that the compression amount of the spring 100 can be obtained, and the strain gauge is pressed by the elastic force of the spring 100 to obtain the elastic force of the spring 100 at this time, that is, the elastic force of the spring 100 with different compression amounts can be obtained by the device, and by establishing a coordinate system, the coordinate point of the elastic force-compression amount is obtained, and if the coordinate point is not on the same straight line, the non-uniform elastic coefficient of the spring 100 is explained.

In some embodiments, the lower end of the piston rod 41 of the cylinder 40 is connected by a hinge mechanism 50. Specifically, the hinge mechanism 50 includes: a base 51, a ball 52 and a pressure plate 53. The seat body 51 is fixed on the movable plate 30, and a spherical recess is formed on the upper end surface of the seat body 51; the ball head 52 is formed at the lower end of the piston rod 41 and is embedded in the spherical recess; the pressing plate 53 is fixed on the upper end of the base body 51 by a fastener to limit the ball head from falling out of the spherical recess. The hinge mechanism 50 enables the movable plate 30 to receive only a vertical driving force without generating a horizontal component force.

In some embodiments, the top plate 20 is provided with a first position-limiting pillar 91 at the bottom thereof, and the base 10 is provided with a second position-limiting pillar 92 at a position corresponding to the first position-limiting pillar 91, the first position-limiting pillar 91 extends into a section from the upper end of the spring 100, and the second position-limiting pillar 92 extends into a section from the lower end of the spring 100. In these embodiments, the first restraint post 91 and the second restraint post 92 are used to restrain the spring 100 from lateral movement.

In some embodiments, the cylinder 40 is secured to the top plate 20 by a first flange 42, the first flange 42 providing a removable connection between the cylinder 40 and the top plate 20.

In some embodiments, the base 51 is fixed to the movable plate 30 by a second flange 54, and the second flange 54 enables the base 51 to be detachably connected to the movable plate 30.

In some embodiments, the distance sensor is an infrared distance sensor 60.

In some embodiments, a position of the movable plate 30 opposite to the distance sensor 60 is provided with a reference column 80, and the distance sensor 60 is used to measure a distance from a lower end surface of the reference column 80. The distance measuring process of the distance sensor 60 has a reference by providing the reference post 80, and thus the accuracy of detecting the compression amount of the spring 100 can be improved.

Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or variations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. Additionally, in the foregoing detailed description, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. A spring testing apparatus, comprising:

a base for placement on a work platform;

a top plate disposed above the base;

2. The spring detecting device according to claim 1, wherein the lower end of the piston rod of the cylinder is connected by a hinge mechanism.

3. The spring rate detection device of claim 2, wherein the articulation mechanism comprises:

4. The spring detecting device according to claim 1, wherein a plurality of guiding posts are disposed between the base and the top plate, and the guiding posts penetrate through the movable plate to guide the movable plate.

5. The spring tester of claim 4, wherein the guide posts comprise four, four of which are arranged in a matrix.

6. The spring detection device according to claim 1, wherein a first limiting column is disposed at the bottom of the top plate, a second limiting column is disposed at a position of the base corresponding to the first limiting column, the first limiting column extends into one section from the upper end of the spring, and the second limiting column extends into one section from the lower end of the spring.

7. The spring rate detection device of claim 1, wherein said cylinder is secured to said top plate by a first flange.

8. The spring testing device of claim 3, wherein said housing is fixed to said movable plate by a second flange.

9. The spring detection apparatus of claim 1, wherein the distance sensor is an infrared distance sensor.

10. The spring detecting device according to claim 9, wherein a reference column is provided at a position of the movable plate opposite to the distance sensor, and the distance sensor is configured to measure a distance from a lower end surface of the reference column.