CN219416068U

CN219416068U - Large deformation extensometer

Info

Publication number: CN219416068U
Application number: CN202320065884.3U
Authority: CN
Inventors: 冯玉华; 逯世海; 魏健; 陈凯
Original assignee: Shandong Netest Intelligent Equipment Co ltd
Current assignee: Shandong Netest Intelligent Equipment Co ltd
Priority date: 2023-01-07
Filing date: 2023-01-07
Publication date: 2023-07-25
Anticipated expiration: 2033-01-07

Abstract

The utility model provides a large deformation extensometer, relates to mechanical field, includes a support, the support includes the bottom plate, install vertical support board on the bottom plate, the vertical support board top is equipped with the roof, be equipped with slide mechanism in the vertical support board, last holder and lower holder are installed to slide mechanism on, install actuating mechanism on the roof, actuating mechanism can make last holder and lower holder be close to or keep away from relatively along slide mechanism. The utility model can realize the bidirectional stretching of the component by means of the positive and negative screw rods, so as to solve the technical defects that the component in the prior art is stretched and shortened in one direction, and the component is easy to locally stretch and compress to deform, so that the measurement of the stretching value of the component is inaccurate.

Description

Large deformation extensometer

Technical Field

The utility model relates to the field of machinery, in particular to a large deformation extensometer.

Background

Extensometer is an instrument that measures the deformation of a line between two points of a member and other objects, and is generally composed of three parts, namely a sensor, an amplifier and a recorder. When the extensometer measures the elongation value of the elastic material, the extensometer and the electronic universal tester are matched for use, the extensometer is clamped on the elastic body through two knife-edge type clamps of the extensometer, and the extensometer can automatically record the deformation value when the elastic body is stretched. Chinese patent CN109724869a discloses a novel large deformation extensometer which can only extend and shorten the member in one direction, and local stretching and compression deformation of the member easily occurs, resulting in inaccurate measurement of the extension value of the member.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a large deformation extensometer which can avoid the problems.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a large deformation extensometer, includes a support, the support includes the bottom plate, install vertical support board on the bottom plate, the vertical support board top is equipped with the roof, be equipped with slide mechanism in the vertical support board, last holder and lower holder are installed on the slide mechanism, install actuating mechanism on the roof, actuating mechanism can make last holder and lower holder be close to relatively or keep away from along slide mechanism.

Further, the sliding mechanism comprises a sliding rail, the sliding rail is fixedly connected to the vertical supporting plate, an upper sliding block and a lower sliding block are arranged on the sliding rail, an upper locking knob is arranged on the upper sliding block, the upper sliding block can move along the sliding rail and is positioned at one position on the sliding rail, a lower locking knob is arranged on the lower sliding block, and the lower sliding block can move along the sliding rail and is positioned at one position on the sliding rail.

Further, the driving mechanism comprises a driving motor, the output shaft of the driving motor penetrates through the top plate and then is connected with a positive and negative screw rod, the positive and negative screw rod comprises a clockwise screw rod and a counterclockwise screw rod, the clockwise screw rod is connected with the counterclockwise screw rod, the end part of the clockwise screw rod is connected with the driving motor, and the lower end part of the counterclockwise screw rod is rotationally connected on the bottom plate.

Further, the upper clamp comprises an upper lifting sleeve, the upper lifting sleeve is matched with the clockwise screw rod, the upper lifting sleeve is fixedly connected to the upper sliding block, and the upper knife edge type clamp is arranged on the upper lifting sleeve.

Further, an upper reinforcing plate is arranged between the upper knife edge type clamp holder and the upper lifting sleeve.

Further, the lower clamp holder comprises a lower lifting sleeve, the lower lifting sleeve is matched with the anticlockwise screw rod, the lower lifting sleeve is fixedly connected to the lower sliding block, and the lower knife edge clamp holder is arranged on the lower lifting sleeve.

Further, a lower reinforcing plate is arranged between the lower knife edge type clamp holder and the lower lifting sleeve.

The beneficial effects of the utility model are as follows: the utility model can realize the bidirectional stretching of the component by means of the positive and negative screw rods, so as to solve the technical defects that the component in the prior art is stretched and shortened in one direction, and the component is easy to locally stretch and compress to deform, so that the measurement of the stretching value of the component is inaccurate.

Drawings

FIG. 1 is a front view of the present utility model;

in the figure: the device comprises a bracket, a bottom plate, a vertical supporting plate, a top plate, a sliding mechanism, a sliding rail, a sliding block, a locking knob, a sliding block, a driving mechanism, a driving motor, a clockwise screw, a counterclockwise screw, a clamping device, a lifting sleeve, a lifting clamp, a lifting plate, a reinforcing plate, a clamping device, a lifting sleeve, a reinforcing plate, a lifting plate, a reinforcing plate and a clamping device.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, a large deformation extensometer comprises a bracket 1, the bracket comprises a bottom plate 11, a vertical support plate 12 is installed on the bottom plate, a top plate 13 is arranged at the top of the vertical support plate, a sliding mechanism 2 is arranged on the vertical support plate, an upper clamp 4 and a lower clamp 5 are installed on the sliding mechanism, a driving mechanism 3 is installed on the top plate, and the driving mechanism can enable the upper clamp 4 and the lower clamp 5 to be relatively close to or far away from each other along the sliding mechanism.

In at least one embodiment, the sliding mechanism comprises a sliding rail 21, the sliding rail is fixedly connected to a vertical supporting plate, an upper sliding block 22 and a lower sliding block 24 are installed on the sliding rail, an upper locking knob 23 is installed on the upper sliding block, the upper locking knob can enable the upper sliding block to move along the sliding rail and be positioned at one position on the sliding rail, a lower locking knob 25 is installed on the lower sliding block, and the lower sliding block can be enabled to move along the sliding rail and be positioned at one position on the sliding rail.

In at least one embodiment, the driving mechanism comprises a driving motor 31, an output shaft of the driving motor penetrates through the top plate and is connected with a positive and negative screw rod, the positive and negative screw rod comprises a clockwise screw rod 32 and a counterclockwise screw rod 33, the clockwise screw rod is connected with the counterclockwise screw rod, the end part of the clockwise screw rod is connected with the driving motor, and the lower end part of the counterclockwise screw rod is rotatably connected on the bottom plate.

In at least one embodiment, the upper gripper comprises an upper lifting sleeve 41, the upper lifting sleeve is matched with a clockwise screw rod, the upper lifting sleeve is fixedly connected to the upper sliding block, and an upper knife edge gripper 42 is installed on the upper lifting sleeve.

Further, an upper reinforcing plate 43 is arranged between the upper knife edge type clamp holder and the upper lifting sleeve.

In at least one embodiment, the lower gripper comprises a lower lifting sleeve 51, the lower lifting sleeve is matched with the counterclockwise screw rod, the lower lifting sleeve is fixedly connected to the lower sliding block, and a lower knife edge gripper 53 is installed on the lower lifting sleeve.

Further, a lower reinforcing plate 52 is arranged between the lower knife edge type clamp and the lower lifting sleeve.

Other than the technical features described in the specification, all are known to those skilled in the art.

Claims

1. The utility model provides a large deformation extensometer, its characterized in that, includes a support, the support includes the bottom plate, install vertical support board on the bottom plate, the vertical support board top is equipped with the roof, be equipped with slide mechanism in the vertical support board, last holder and lower holder are installed to slide mechanism on, install actuating mechanism on the roof, actuating mechanism can make last holder and lower holder be close to or keep away from relatively along slide mechanism.

2. The large deformation extensometer of claim 1 wherein the sliding mechanism includes a sliding rail fixedly connected to the vertical support plate, an upper slider and a lower slider are mounted on the sliding rail, an upper locking knob is mounted on the upper slider, the upper locking knob can enable the upper slider to move along the sliding rail and be positioned at one place on the sliding rail, a lower locking knob is mounted on the lower slider, and the lower locking knob can enable the lower slider to move along the sliding rail and be positioned at one place on the sliding rail.

3. The large deformation extensometer of claim 2 wherein the drive mechanism includes a drive motor, the output shaft of the drive motor is connected with a positive and negative screw rod after passing through the top plate, the positive and negative screw rod includes a clockwise screw rod and a counterclockwise screw rod, the clockwise screw rod is connected with the counterclockwise screw rod, the end of the clockwise screw rod is connected with the drive motor, and the lower end of the counterclockwise screw rod is rotatably connected with the bottom plate.

4. A large deformation extensometer according to claim 3 wherein the upper holder includes an upper lifting sleeve which mates with a clockwise lead screw, the upper lifting sleeve being fixedly connected to the upper slider, the upper lifting sleeve having an upper knife-edge holder mounted thereon.

5. The large deformation extensometer of claim 4 wherein an upper reinforcing plate is provided between the upper knife-edge holder and the upper lifting sleeve.

6. The large deformation extensometer of claim 5 wherein the lower holder includes a lower lifting sleeve which mates with a counter-clockwise lead screw, the lower lifting sleeve being fixedly connected to a lower slider, the lower lifting sleeve having a lower knife-edge holder mounted thereon.

7. The large deformation extensometer of claim 6 wherein a lower reinforcing plate is provided between the lower knife-edge holder and the lower lifting sleeve.