CN217425165U

CN217425165U - SMA fiber and ECC matrix bonding mechanical property testing device

Info

Publication number: CN217425165U
Application number: CN202221190645.2U
Authority: CN
Inventors: 龚晓俊; 杨曌
Original assignee: Wuhan University of Science and Engineering WUSE
Current assignee: Wuhan University of Science and Engineering WUSE
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-09-13
Anticipated expiration: 2032-05-18

Abstract

The utility model discloses a SMA fibre and ECC base member bonding mechanical properties testing arrangement, the on-line screen storage device comprises a base, box, support frame and driving motor are placed to the upper surface difference fixedly connected with base member of base, driving motor's output fixedly connected with lead screw, the top of lead screw and the surface rotation of support frame are connected, spacing guiding hole has been seted up in the front of support frame. This SMA fibre and ECC base member bonding mechanical properties testing arrangement, through setting up the support frame, driving motor, the lead screw, the activity regulating block, spacing frame, screw thread push rod and spacing clamp plate, when testing, can insert the fibre in the spacing jack on spacing frame surface, rethread rotation screw thread push rod drives spacing clamp plate and presses down and fix spacing, it is upwards tensile with the fibre to drive spacing frame by driving motor again, thereby make things convenient for the staff to test the cohesive force of fibre and engineering cement base member, and is convenient for operate, convenient to use, the efficiency of detection achievement has been improved.

Description

SMA fiber and ECC matrix bonding mechanical property testing device

Technical Field

The utility model relates to a material detection technical field specifically is a SMA fibre and ECC base member bonding mechanical properties testing arrangement.

Background

The engineering cement-based composite material, ECC for short, has the characteristics of strain hardening and multi-slit cracking, can effectively prevent the invasion of external harmful substances, improves the durability and toughness of the structure, and has high energy absorption capacity, the addition of the reinforcing fiber into the ECC mixture becomes an effective means for improving the performance of an ECC matrix, the addition of the SMA fiber into the ECC matrix can improve the high-temperature stability, the low-temperature crack resistance and the water stability of the ECC, and can effectively improve the tensile strength, the compressive strength, the shearing strength and the impact strength, thereby greatly improving the performance of the asphalt matrix.

In order to research the bonding strength of the SMA fiber and the ECC matrix interface and the effect of the fiber length on the performance enhancement of the ECC matrix, a tensile test is usually utilized for carrying out a bonding force performance test, but the limit and fixing operation of the existing tensile test device on the fiber is complex, inconvenient and low in stability, and the fiber is easy to send and fall off in the drawing test process, so that the efficiency of the test work is influenced. Therefore, the testing device for the mechanical property of the bonding of the SMA fiber and the ECC matrix is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a SMA fibre and ECC base member bonding mechanical properties testing arrangement to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a SMA fibre and ECC base member bonding mechanical properties testing arrangement, the on-line screen storage device comprises a base, box, support frame and driving motor are placed to the upper surface difference fixedly connected with base member of base, driving motor's output fixedly connected with lead screw, the top of lead screw is rotated with the surface of support frame and is connected, spacing guiding hole has been seted up in the front of support frame, the surperficial threaded connection of lead screw has the activity regulating block, activity regulating block and spacing guiding hole sliding connection, and the positive fixedly connected with mounting panel of activity regulating block, the lower fixed surface of mounting panel is the spacing frame of U font, the screw hole has been seted up to the upper surface of mounting panel, and the inner wall threaded connection of screw hole has the screw thread push rod, and the bottom of screw thread push rod extends to the inside of spacing frame, and the bottom rotation of screw thread push rod is connected with spacing clamp plate.

Preferably, the front surface and the rear surface of the limiting frame are provided with limiting jacks corresponding in position, and the surface of the limiting pressure plate is connected with the inner wall of the limiting frame in a sliding mode.

Preferably, the lower surface of the limiting pressure plate is fixedly connected with a plurality of anti-skid rubber strips.

Preferably, the surface that the box was placed to the base member is provided with electric heating plate, and the upper surface that the box was placed to the base member rotates and is connected with two corresponding lamina tecti in position.

Preferably, the front surface of the support frame is provided with scale marks, and the positions of the scale marks correspond to the limiting guide holes.

Preferably, the top end of the threaded push rod is fixedly connected with a hand wheel, and the position of the limiting frame corresponds to the base body placing box.

Advantageous effects

The utility model provides a SMA fibre and ECC base member bonding mechanical properties testing arrangement possesses following beneficial effect:

1. this SMA fibre and ECC base member bonding mechanical properties testing arrangement, through setting up the support frame, driving motor, the lead screw, the activity regulating block, spacing frame, screw thread push rod and spacing clamp plate, when testing, can insert the fibre in the spacing jack on spacing frame surface, rethread rotation screw thread push rod drives spacing clamp plate and presses down and fix spacing, it is upwards tensile with the fibre to drive spacing frame by driving motor again, thereby make things convenient for the staff to test the cohesive force of fibre and engineering cement base member, and is convenient for operate, convenient to use, the efficiency of detection achievement has been improved.

2. This SMA fibre and ECC base member bonding mechanical properties testing arrangement places box and electrical heating board through setting up the base member, utilize the electrical heating board to place the box to the base member and carry out the heat treatment, thereby can test engineering cement base member and fibrous bonding property under high temperature environment, be provided with the scale mark through the surface at the support frame, can be at the fibrous in-process of spacing frame upwards pulling, detect the displacement distance of spacing frame, thereby play the purpose that supplementary staff detected fibre and base member tensile strength.

Drawings

FIG. 1 is a schematic view of the front cut structure of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

fig. 3 is the schematic diagram of the side-cut structure of the limit frame of the present invention.

In the figure: the device comprises a base body placing box 1, a support frame 2, a driving motor 3, a lead screw 4, a limiting guide hole 5, a movable adjusting block 6, a mounting plate 7, a limiting frame 8, a threaded push rod 9, a limiting pressing plate 10, a limiting jack 11, an anti-skid rubber strip 12, an electric heating plate 13, scale marks 14 and a hand wheel 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a SMA fibre and ECC base member bonding mechanical properties testing arrangement, includes the base, and the box 1 is placed to the upper surface difference fixedly connected with base member of base, support frame 2 and driving motor 3, and the surface that the box 1 was placed to the base member is provided with electrical heating board 13, and the upper surface rotation that the box 1 was placed to the base member is connected with two corresponding lamina tecti in position, leaves the gap between two lamina tecti, can make the fibre pass between two lamina tecti.

Place box 1 and electric heating plate 13 through setting up the base member, utilize electric heating plate 13 to place box 1 to the base member and carry out heat treatment to can test engineering cement base member and fibrous adhesive property under high temperature environment.

The output end of the driving motor 3 is fixedly connected with a screw rod 4, the top end of the screw rod 4 is rotatably connected with the surface of the support frame 2, a limiting guide hole 5 is formed in the front of the support frame 2, scale marks 14 are arranged on the front of the support frame 2, and the positions of the scale marks 14 correspond to the limiting guide hole 5.

The surface thread of the screw rod 4 is connected with a movable adjusting block 6, the movable adjusting block 6 is connected with a limit guide hole 5 in a sliding way, the front surface of the movable adjusting block 6 is fixedly connected with a mounting plate 7, the lower surface of the mounting plate 7 is fixedly connected with a U-shaped limit frame 8, and the position of the limit frame 8 corresponds to the base body placing box 1.

Through being provided with scale mark 14 on the surface at support frame 2, can be at the fibrous in-process of the upwards pulling of spacing frame 8, detect the displacement distance of spacing frame 8 to the staff of being convenient for detects fibrous tensile strength.

Threaded hole is seted up to the upper surface of mounting panel 7, and the inner wall threaded connection of threaded hole has screw thread push rod 9, and screw thread push rod 9's top fixedly connected with hand wheel 15, and screw thread push rod 9's bottom extends to the inside of spacing frame 8, and screw thread push rod 9's bottom rotates and is connected with spacing clamp plate 10.

The corresponding spacing jack 11 in position is all seted up to the front and back surface of spacing frame 8, the surface of spacing clamp plate 10 and the inner wall sliding connection of spacing frame 8, and the lower fixed surface of spacing clamp plate 10 is connected with a plurality of anti-skidding rubber strip 12.

Through setting up support frame 2, driving motor 3, lead screw 4, activity regulating block 6, spacing frame 8, screw thread push rod 9 and spacing clamp plate 10, when testing, can insert the fibre in the spacing jack 11 on spacing frame 8 surface, rethread rotation screw thread push rod 9 drives spacing clamp plate 10 and presses down and fix spacing, it upwards stretches the fibre to drive spacing frame 8 by driving motor 3 again, thereby make things convenient for the staff to test the cohesive force of fibre and engineering cement base member, and is convenient for operation, convenient to use, the efficiency of detection achievement has been improved.

The working principle is as follows: when the testing device is used, firstly, an ECC engineering cement base material is placed into the base body placing box 1, then SMA fibers are placed into the base body placing box 1 and are bonded with the engineering cement base material, then the top ends of the fibers penetrate through the limiting insertion holes 11 in the surface of the limiting frame 8, the hand wheel 15 is rotated to drive the threaded push rod 9 to rotate, then the limiting press plate 10 is driven to press and fix the fibers in the limiting frame 8 downwards, then the driving motor 3 is started to drive the screw rod 4 to rotate, the screw rod 4 drives the movable adjusting block 6 to move upwards, and then the mounting plate 7 and the limiting frame 8 are driven to pull the fibers upwards, so that the purpose of testing the bonding force of the fibers and the base body by auxiliary workers is achieved according to the displacement distance of the limiting frame 8 moving upwards.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a SMA fibre and ECC base member bonding mechanical properties testing arrangement, includes the base, its characterized in that: the upper surface of the base is respectively and fixedly connected with a substrate placing box (1), a support frame (2) and a driving motor (3), the output end of the driving motor (3) is fixedly connected with a screw rod (4), the top end of the screw rod (4) is rotationally connected with the surface of the support frame (2), the front surface of the support frame (2) is provided with a limiting guide hole (5), the surface of the screw rod (4) is in threaded connection with a movable adjusting block (6), the movable adjusting block (6) is in sliding connection with the limiting guide hole (5), the front surface of the movable adjusting block (6) is fixedly connected with a mounting plate (7), the lower surface of the mounting plate (7) is fixedly connected with a U-shaped limiting frame (8), the upper surface of the mounting plate (7) is provided with a threaded hole, the inner wall of the threaded hole is in threaded connection with a threaded push rod (9), and the bottom end of the threaded push rod (9) extends to the inside of the limiting frame (8), and the bottom end of the thread push rod (9) is rotatably connected with a limit pressure plate (10).

2. The device for testing the bonding mechanical property of the SMA fiber and the ECC matrix, according to claim 1, is characterized in that: the front surface and the rear surface of the limiting frame (8) are provided with limiting insertion holes (11) corresponding in position, and the surface of the limiting pressing plate (10) is connected with the inner wall of the limiting frame (8) in a sliding mode.

3. The device for testing the bonding mechanical property of the SMA fiber and the ECC matrix, according to claim 1, is characterized in that: the lower surface of the limiting pressure plate (10) is fixedly connected with a plurality of anti-skidding rubber strips (12).

4. The device for testing the bonding mechanical property of the SMA fiber and the ECC matrix, according to claim 1, is characterized in that: the surface that box (1) was placed to the base member is provided with electric heating board (13), and the upper surface that box (1) was placed to the base member rotates and is connected with two corresponding lamina tecti in position.

5. The device for testing the bonding mechanical property of the SMA fiber and the ECC matrix, according to claim 1, is characterized in that: the front surface of the support frame (2) is provided with scale marks (14), and the positions of the scale marks (14) correspond to the limiting guide holes (5).

6. The device for testing the bonding mechanical property of the SMA fiber and the ECC matrix, according to claim 1, is characterized in that: the top end of the threaded push rod (9) is fixedly connected with a hand wheel (15), and the position of the limiting frame (8) corresponds to the base body placing box (1).