CN212747661U

CN212747661U - Special extensometer calibration equipment

Info

Publication number: CN212747661U
Application number: CN202021130415.8U
Authority: CN
Inventors: 于中民; 张军锋
Original assignee: Cangzhou Hanton Science Test Instruments Co ltd
Current assignee: Xianxian Xingyu Test Instrument Technology Development Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-03-19
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a special extensometer calibration device, which comprises a differential head, a cylindrical locking device and a back plate, wherein the cylindrical locking device comprises a track disc, a grab and a tray, the track disc and the tray are fixedly connected through a cylindrical locking device fixing screw, a plurality of grabs are arranged between the track disc and the tray and movably connected with a transmission screw, and a groove is arranged on the track disc, the utility model controls the rotation of the rotating disc by rotating a butterfly nut, further controls the grab to move, thereby completing the clamping of a movable cylinder, and the telescopic rod on the rotating disc descends by rotating the rotating disc, so that a sliding support contacted between the telescopic rods of the rotating disc moves downwards under the action of self gravity, and the accurate distance between two arms of the extensometer can be obtained through the rotating disc, the utility model has the advantages of practicality, convenience and accurate measurement.

Description

Special extensometer calibration equipment

Technical Field

The utility model relates to a measuring instrument equipment technical field specifically is a special extensometer calibration equipment.

Background

Extensometers are devices that measure the rate of tensile deformation of a cylindrical or sheet-like material and are typically manufactured using the strain gauge principle. The cutting edge of the extensometer is only hooped on the measured cylindrical material through the clamp spring of the extensometer, and when the measured material is subjected to a tensile test, the two cutting edges of the extensometer move along with the deformation of the material, so that the deformation rate of the measured material is measured. When calibrating the extensometer, the distance between two cutting edges of the extensometer needs to be accurately read out and then is compared with a standard displacement meter, so that the data accuracy of the extensometer is corrected.

Due to the limitation of the structure of the extensometer, the distance of the cutting edge of the extensometer cannot be accurately measured without other devices.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special extensometer calibration equipment to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a special extensometer calibration device comprises a differential head, a cylindrical locking device and a back plate, wherein two sides of the back plate are detachably connected with two side plates, an optical axis lower support is installed at the bottom of the back plate, an optical axis upper support is arranged above the optical axis lower support at intervals, the optical axis lower support and the optical axis upper support are detachably connected with the back plate, an optical axis is installed between the optical axis lower support and the optical axis upper support, the optical axis lower support and the optical axis upper support are detachably connected, a sliding support is slidably connected on the optical axis, the cylindrical locking device is detachably connected on the sliding support, a movable cylinder is detachably connected in the cylindrical locking device, two cylindrical fixed supports are installed above the back plate, and the cylindrical fixed supports are fixedly connected with the back plate, can dismantle on the cylinder fixing support and be connected with fixed cylinder be provided with the extensometer between fixed cylinder and the activity cylinder, the both arms of extensometer respectively with can dismantle the connection between fixed cylinder and the activity cylinder sliding support's below is provided with the differential head, the telescopic link of differential head contacts with between the sliding support.

As a further aspect of the present invention: the cylindrical locking device comprises a track disc, a grab and a tray, the track disc and the tray are fixedly connected through 4 fixing screws of the cylindrical locking device, a plurality of grippers are arranged between the track disc and the tray, the grippers are movably connected with the conveying screws, a groove is arranged on the track disc, the conveying screw is connected with the groove in a sliding way, a rotating disc is fixedly connected at the other end of the conveying screw, the conveying screw is provided with a sliding rotating shaft which is matched with a guide rail arranged on the track disc, the sliding rotating shaft is connected with the guide rail in a sliding way, and one side of the lower part of the tray is connected with a swing screw in a sliding way, the other end of the swing screw is connected with one of the plurality of conveying screws, and the other end of the swing screw is connected with a butterfly nut through threads.

As a further aspect of the present invention: the number of the grabs is not less than 4.

As a further aspect of the present invention: and a handle is arranged on the rotating disc.

As a further aspect of the present invention: the fixed cylinder, the movable cylinder, the cylinder locking device and the differential head are coaxially arranged.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a rotate and rotate the differential head, the telescopic rod down motion of differential head, thereby make with the sliding support of contact moves down under self action of gravity between the telescopic link of rotating disc to pull open the two arms of extensometer, through the reading of reading the differential head, thereby obtain the distance between the two arms of extensometer. The utility model has the advantages of practicality, convenience and accurate measurement.

Drawings

FIG. 1 is a front view of a special extensometer calibration device

Fig. 2 is a schematic three-dimensional structure diagram of the special extensometer calibration device.

Fig. 3 is a schematic diagram of the positions of the differential head and the extensometer in the dedicated extensometer calibration device.

Fig. 4 is a top view of a cylinder lock in a special extensometer calibration set.

Fig. 5 is a schematic three-dimensional structure of a cylinder locking device in the special extensometer calibration device.

Fig. 6 is a schematic two of a three-dimensional structure of a cylinder locking device in the special extensometer calibration device.

Fig. 7 is a top view of the special extensometer calibration device in a locked state with a cylinder locking device.

Fig. 8 is a three-dimensional structure diagram of a cylinder locking device in the special extensometer calibration device.

In the figure; 1. differentiating the head; 2. a side vertical plate; 3. an optical axis lower support; 4. a cylindrical locking device; 5. a sliding support; 6. an extensometer; 7. a back vertical plate; 8. a cylindrical fixed support; 9. a support on the optical axis; 10. an optical axis; 11. fixing the cylinder; 12. A movable cylinder; 21. rotating the disc; 22. a track disc; 23. a delivery screw; 24. fixing screws; 25. a butterfly nut; 26. grabbing; 27. a tray; 28. a sliding shaft; 29. and (4) a movable joint screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, other embodiments obtained by a person of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the term "center". The directional or positional relationships "length," "width," "height," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "side," and the like are indicative of the directional or positional relationships illustrated in fig. 1, merely to facilitate description and to simplify description, and are not indicative or implied that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.

Example 1

Referring to fig. 1-8, a special extensometer calibration device includes a differential head 1, a cylindrical locking device 4, an extensometer 6 and a back plate 7, two sides of the back plate 7 are detachably connected with two side plates 2, the back plate 7 is stably supported by the two side plates 2, a lower optical axis 10 support 3 is installed at the bottom of the back plate 7, upper optical axis 10 supports 9 are arranged above the lower optical axis 10 support 3 at intervals, the lower optical axis 10 support 3 and the upper optical axis 10 support 9 are detachably connected with the back plate 7, an optical axis 10 is installed between the lower optical axis 10 support 3 and the upper optical axis 10 support 9, the optical axis 10 is detachably connected with the lower optical axis 10 support 3 and the upper optical axis 10 support 9, a sliding support 5 is slidably connected with the optical axis 10, so that the sliding support 5 can move on the optical axis 10 along a vertical direction, the sliding support 5 is detachably connected with a cylinder locking device 4, a movable cylinder 12 (used for simulating a tested piece of a tensile experiment together with a fixed cylinder 11) is detachably connected in the cylinder locking device 4, two cylinder fixed supports 8 are installed above the back plate 7, the cylinder fixed supports 8 are fixedly connected with the back plate 7, a fixed cylinder 11 (used for simulating a tested piece of a tensile experiment together with the movable cylinder 12) is detachably connected on the cylinder fixed supports 8, an extensometer 6 is arranged between the fixed cylinder 11 and the movable cylinder 12, two arms of the extensometer 6 are respectively detachably connected with the fixed cylinder 11 and the movable cylinder 12, so that when the movable cylinder 12 moves together with the cylinder locking device 4, one wall of the extensometer 6 is driven to move together, the differential head 1 is arranged below the sliding support 5, the telescopic rod of the differential head 1 is in contact with the sliding support 5, and the sliding support 5 is controlled to fall by rotating the differential head 1, so that the deformation length of the sliding support 5 can be accurately measured.

As a further aspect of this embodiment: the cylinder locking device 4 comprises a track disc 22, a plurality of grippers 26 and a tray 27, the track disc 22 is fixedly connected with the tray 27 through 4 fixing screws 24 of the cylinder locking device, the grippers 26 are arranged between the track disc 22 and the tray 27 and movably connected with a conveying screw 23, a groove is arranged on the track disc 22, the conveying screw 23 is slidably connected with the groove, the other end of the conveying screw 23 is fixedly connected with a rotating disc 21, a sliding rotating shaft 28 is arranged on the conveying screw 23, the sliding rotating shaft 28 is matched with a guide rail arranged on the track disc 22, the sliding rotating shaft 28 is slidably connected with the guide rail, so that when the rotating disc 21 is rotated, the conveying screw 23 is driven to slide in the groove, and the grippers 26 are controlled to move, the distance between the grippers 26 is reduced under the matching of the sliding rotating shaft 28 and the guide rail, so as to complete the clamping work of the test piece, a swing screw 29 is connected to one side below the tray 27 in a sliding manner, the other end of the swing screw 29 is connected with one of the plurality of conveying screws 23, a butterfly nut 25 is connected to the other end of the swing screw 29 through threads, and the rotation of the rotating disc 21 is controlled through rotating the butterfly nut 25, so that the purpose of locking the test piece is achieved.

Example 2

This embodiment is a further limitation and improvement of embodiment 1 on the basis of embodiment 1, and a special extensometer 6 checking device comprises all the technical features of embodiment 1, and in addition,

as a further aspect of this embodiment: in order to ensure that the tested piece can be firmly fixed, the number of the grippers 26 is not less than 4.

As a further aspect of this embodiment: in order to facilitate the experimenter to operate the rotating disc 21, a handle is arranged on the rotating disc 21.

As a further aspect of this embodiment: the fixed cylinder 11, the movable cylinder 12, the cylinder locking device 4 and the differential head 1 are coaxially arranged.

The utility model discloses a working method is:

the utility model discloses the during operation will be surveyed a both ends by the experimenter and be fixed in respectively cylinder fixing support 8 and on the cylinder locking device 4, wherein cylinder locking device 4 is through rotating butterfly nut 25 can be controlled rotating disc 21 drives grab 26 and remove and accomplish clamping work, will later draw the both ends of extensometer 6 respectively with the both ends of being surveyed a are fixed mutually, later through rotating first 1 of differential makes on the first 1 of differential with the telescopic link that contacts between the sliding support 5 descends, sliding support 5 and with can dismantle the cylinder locking device 4 of connection between it will stimulate under self action of gravity the being surveyed a, make deformation takes place for the being surveyed a, through reading out the last registration of differential first 1 can be accurate measure the deformation volume of being surveyed a.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The special extensometer checking device comprises a differential head (1), a cylindrical locking device (4) and a back plate (7), and is characterized in that two side plates (2) are detachably connected with two sides of the back plate (7), an optical axis (10) lower support (3) is installed at the bottom of the back plate (7), optical axis (10) upper supports (9) are arranged above the optical axis (10) lower support (3) at intervals, the optical axis (10) lower support (3) and the optical axis (10) upper support (9) are detachably connected with the back plate (7), an optical axis (10) is installed between the optical axis (10) lower support (3) and the optical axis (10) upper support (9), the optical axis (10) is detachably connected with the optical axis (10) lower support (3) and the optical axis (10) upper support (9), a sliding support (5) is slidably connected with the optical axis (10), can dismantle on sliding support (5) and be connected with cylinder locking device (4), can dismantle in cylinder locking device (4) and be connected with activity cylinder (12) two cylinder fixing support (8) are installed to the top of back of the body board (7), cylinder fixing support (8) with fixed connection between back of the body board (7) can dismantle on cylinder fixing support (8) and be connected with fixation cylinder (11) be provided with extensometer (6) between fixation cylinder (11) and activity cylinder (12), the both arms of extensometer (6) respectively with can dismantle the connection between fixation cylinder (11) and the activity cylinder (12) the below of sliding support (5) is provided with differential head (1), the telescopic link of differential head (1) contacts with between sliding support (5).

2. The special extensometer calibration set of claim 1, characterized in that the cylinder locking device (4) includes a track disc (22), a grab (26) and a tray (27), the track disc (22) and the tray (27) are fixedly connected through 4 fixing screws (24) of the cylinder locking device (4), a plurality of grabs (26) are arranged between the track disc (22) and the tray (27), the grab (26) is movably connected with the transmission screw (23), a groove is arranged on the track disc (22), the transmission screw (23) is slidably connected with the groove, a rotating disc (21) is fixedly connected with the other end of the transmission screw (23), a sliding rotating shaft (28) is arranged on the transmission screw (23), the sliding rotating shaft (28) is matched with a guide rail arranged on the track disc (22), the sliding rotating shaft (28) is connected with the guide rail in a sliding mode, a swing screw (29) is connected to one side of the lower portion of the tray (27) in a sliding mode, the other end of the swing screw (29) is connected with one of the conveying screws (23), and a butterfly nut (25) is connected to the other end of the swing screw (29) through threads.

3. A dedicated extensometer calibration device as claimed in claim 2, characterized in that the number of grippers (26) is not less than 4.

4. A special extensometer calibration device according to claim 2, characterized in that the rotating disc (21) is provided with a handle.

5. A special extensometer calibration device according to claim 4, characterized in that the fixed cylinder (11), the movable cylinder (12), the cylinder locking device (4) and the differential head (1) are arranged coaxially.