CN219694730U

CN219694730U - Stretching detection device

Info

Publication number: CN219694730U
Application number: CN202321297566.6U
Authority: CN
Inventors: 王楠楠; 张家伟; 黄畅; 刘凯; 熊良建
Original assignee: Civil Aviation Flight University of China
Current assignee: Civil Aviation Flight University of China
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-09-15
Anticipated expiration: 2033-05-26

Abstract

The utility model discloses a stretching detection device, which comprises a workbench, wherein L-shaped supporting plates are respectively arranged at the left end and the right end of the workbench, a bidirectional threaded rod is rotatably arranged between the L-shaped supporting plates, the directions of threads at the left end and the right end of the bidirectional threaded rod are opposite, the right end of one L-shaped supporting plate is provided with a motor, an output shaft of the motor penetrates through a through hole arranged in the L-shaped supporting plate and is fixedly connected with the right end of the bidirectional threaded rod, a movable frame is respectively arranged at the left end and the right end of the bidirectional threaded rod in a threaded manner, the movable frame is respectively in sliding connection with a sliding groove arranged on the workbench, and the front end and the rear end of the bottom of the movable frame are respectively in sliding connection with sliding rails symmetrically arranged on the front surface and the rear surface of the top of the workbench.

Description

Stretching detection device

Technical Field

The utility model relates to the technical field of composite material detection, in particular to a stretching detection device.

Background

The composite material is a material formed by mixing two or more than two different materials according to a certain proportion, has the excellent performances of light weight, high strength, high rigidity, corrosion resistance, heat resistance, wear resistance and the like, and is widely applied to the fields of aerospace, ship manufacturing, automobiles, buildings and the like. In the design and manufacturing process of composite materials, the evaluation of mechanical properties, durability, fatigue properties and the like of the composite materials is important, and a tensile test is one of standard methods for evaluating mechanical properties of materials;

at present, the traditional tensile test method adopts a tensile testing machine and a clamp to carry out tensile test on a composite material, however, when the tensile test is carried out, as the clamp clamps the composite material, if the friction force between the clamp and the composite material is smaller or the clamping and fixing effects are unstable, the detection data result is easy to influence, and in order to reduce the deviation and ensure the accuracy of the detection data result, the tensile test device is provided.

Disclosure of Invention

In view of the problems existing in the prior art, the utility model discloses a stretching detection device, which adopts the technical scheme that the stretching detection device comprises a workbench, wherein L-shaped support plates are respectively arranged at the left end and the right end of the workbench, a bidirectional threaded rod is rotatably arranged between the L-shaped support plates, the threads at the left end and the right end of the bidirectional threaded rod are opposite, a motor is arranged at the right end of one L-shaped support plate, an output shaft of the motor penetrates through a through hole arranged in the L-shaped support plate to be fixedly connected with the right end of the bidirectional threaded rod, a movable frame is respectively and spirally arranged at the left end and the right end of the bidirectional threaded rod, the movable frame is respectively and slidably connected with a sliding groove arranged on the workbench, the front end and the rear end of the bottom of the movable frame are respectively and longitudinally symmetrically arranged on the surface of the top of the workbench, clamping units are respectively arranged at the front end and the rear end of the movable frame, and displacement sensors are respectively and fixedly arranged in the middle of the front end of the outer side of the movable frame.

As a preferable technical scheme of the utility model, the clamping unit comprises an electric telescopic rod, racks, gears, clamping blocks and connecting shafts, wherein the two groups of connecting shafts are arranged, the connecting shafts are respectively and rotatably arranged at the front end and the rear end of the movable frame, the clamping blocks are respectively and fixedly arranged at the top ends of the connecting shafts, the clamping blocks are in a psittacosis-shaped structure, the gears are respectively and fixedly arranged at the bottoms of the connecting shafts, the two groups of electric telescopic rods are arranged, the electric telescopic rods are respectively and symmetrically arranged at the bottoms of the movable frame, the racks are respectively and fixedly arranged at the telescopic ends of the electric telescopic rods, and the racks are respectively meshed with teeth arranged on the gears. The rack is controlled to move through the electric telescopic rod, so that the rack can drive the clamping blocks to rotate relatively through the gear driving connecting shaft, and the clamping blocks are of a psittacosis-shaped structure, so that composite materials with different sizes can be firmly clamped.

As a preferable technical scheme of the utility model, the outer side surfaces of the clamping blocks are respectively provided with an anti-skid pad, and the anti-skid pads are silica gel pads. The friction force between the clamping block and the detected composite material can be improved, so that the occurrence of deviation is reduced, and the accuracy of the detection data result is ensured.

As a preferable technical scheme of the utility model, mounting holes are respectively arranged at the front end and the rear end of the bottom of the L-shaped supporting plate. The staff of being convenient for fix the workstation.

As a preferable technical scheme of the utility model, the right end of the front side of the workbench is provided with a controller, the output end of the controller is electrically connected with the input ends of the motor and the electric telescopic rod, and the input end of the controller is electrically connected with the output ends of the displacement sensor and the external power supply. The staff can control motor and electric telescopic handle respectively through the controller, and displacement sensor can carry out real-time detection with the distance data of the movable frame that detects.

The utility model has the beneficial effects that: according to the utility model, the rack at the telescopic end of the electric telescopic rod drives the gear to rotate by starting the electric telescopic rod, and the gear drives the clamping block to rotate relatively through the connecting shaft when rotating, and as the clamping block is of a psittacosis-shaped structure, composite materials with different sizes can be firmly clamped, and the anti-slip pad can improve the friction force between the clamping block and the composite materials, so that the occurrence of deviation of detection data is reduced;

after the composite material is fixedly clamped, the motor is controlled to rotate reversely, the bidirectional threaded rod is used for controlling the movable frame to move towards the left end and the right end of the workbench at the same time, the displacement sensor can detect the moving distance of the movable frame in real time in the moving process of the movable frame, and the maximum bearing tensile strength of the composite material can be obtained after the composite material is stretched to break;

in summary, this tensile testing device, the operation of being convenient for can carry out firm clamp to the combined material of equidimension not, can improve simultaneously the frictional force between clamp block and the combined material to reduce the thing emergence that the deviation appears in the detected data, make the accuracy of detected data result obtain the assurance, can solve the traditional tensile test method that puts forward in the above-mentioned prior art and adopt tensile testing machine and anchor clamps to carry out tensile detection to the combined material, however when tensile detection, because anchor clamps carry out clamp to the combined material, if the frictional force between anchor clamps and the combined material is less or clamp the fixed effect unstable, the problem of easily influencing the detected data result.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the bottom structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model.

In the figure: the device comprises a workbench 1, a 2L-shaped supporting plate, a controller 3, a motor 4, a clamping unit 5, an electric telescopic rod 51, a rack 52, a gear 53, a clamping block 54, an anti-slip pad 55, a connecting shaft 56, a sliding rail 6, a sliding chute 7, a moving frame 8, a displacement sensor 9, a bidirectional threaded rod 10 and a mounting hole 11.

Detailed Description

Example 1

As shown in fig. 1 to 3, the utility model discloses a stretching detection device, which adopts the technical scheme that the stretching detection device comprises a workbench 1, wherein an L-shaped supporting plate 2 is respectively arranged at the left end and the right end of the workbench 1, mounting holes 11 are respectively arranged at the front end and the rear end of the bottom of the L-shaped supporting plate 2, a worker can fix the workbench 1 by respectively penetrating an external mounting bolt through the mounting holes 11 to be connected with external reserved screw holes, a bidirectional threaded rod 10 is rotatably arranged between the L-shaped supporting plates 2, the screw thread directions of the left end and the right end of the bidirectional threaded rod 10 are opposite, a motor 4 is arranged at the right end of one L-shaped supporting plate 2, an output shaft of the motor 4 passes through a through hole arranged on the L-shaped supporting plate 2 and is fixedly connected with the right end of the bidirectional threaded rod 10, a movable frame 8 is respectively arranged at the left end and the right end of the bidirectional threaded rod 10 in a screw thread way, the movable frame 8 is respectively connected with a chute 7 arranged on the workbench 1 in a sliding way, the front and back ends of the bottom of the movable frame 8 are respectively and slidably connected with the sliding rails 6 which are arranged in front and back symmetry on the top surface of the workbench 1, the motor 4 is operated to drive the output shaft of the motor 4 to rotate the bidirectional threaded rod 10, the movable frame 8 relatively slides along the sliding chute 7 due to the opposite screw directions of the left and right ends of the bidirectional threaded rod 10, the bottom of the movable frame 8 is slidably connected with the sliding rails 6 to improve the stability of the movable frame 8 during movement, the front and back ends of the movable frame 8 are respectively provided with the clamping units 5, the clamping units 5 comprise the electric telescopic rods 51, racks 52, gears 53, clamping blocks 54 and connecting shafts 56, the connecting shafts 56 are respectively and rotatably arranged at the front and back ends of the movable frame 8, the clamping blocks 54 are respectively and fixedly arranged at the top ends of the connecting shafts 56, the clamping blocks 54 are in a parrot-shaped structure, the bottom of connecting axle 56 is fixed mounting respectively has gear 53, electric telescopic handle 51 is provided with two sets of, electric telescopic handle 51 is bilateral symmetry respectively and is set up in the bottom of carriage 8, telescopic end of electric telescopic handle 51 is fixed mounting respectively has rack 52, rack 52 meshes with the tooth that sets up on gear 53 respectively, the outside surface of clamping block 54 is provided with slipmat 55 respectively, slipmat 55 is the silica gel pad, place the combined material that needs tensile test between clamping block 54, through starting electric telescopic handle 51, make the rack 52 of electric telescopic handle 51 telescopic end drive gear 53 rotate, gear 53 is at the time of rotation, drive clamping block 54 through connecting axle 56 and carry out relative rotation, because clamping block 54 is "psittacosis" column structure, thereby can carry out firm clamp to the combined material of equidimension not, and slipmat 55 can improve the frictional force between clamping block 54 and the combined material, thereby reduce the thing emergence of detecting data deviation, the outside front end middle part of carriage 8 is fixed mounting respectively has displacement sensor 9, the front right-hand member of workstation 1 is provided with controller 3, can carry out the electric motor 3 with the electric motor 4 at the side end of controller 3, can carry out the mutual displacement sensor 4 at the carriage 4, can carry out the two-way input to the combined material is carried out to the carriage 8 at the outside of the carriage, the two-way electrical power supply, the high-tension control end is connected to the electric power supply 8, the input device is far-reaching the combined material, the real-time is detected, and can be moved to the electric power station is moved, and is moved and is far from the end and is moved, and is far from the end, and is moved to the end and is far from the end.

The working principle of the utility model is as follows: when in use, the distance between the movable frames 8 is adjusted according to the size of the composite material to be detected, when the distance between the movable frames 8 is adjusted, the motor 4 is started by the controller 3, the output shaft of the motor 4 drives the bidirectional threaded rod 10 to rotate, the movable frames 8 relatively slide along the sliding grooves 7 due to the opposite screw directions of the left and right ends of the bidirectional threaded rod 10, the bottom of the movable frames 8 is in sliding connection with the sliding rails 6, so that the stability of the movable frames 8 during movement is improved, after the movable frames 8 are adjusted, the composite material to be stretched and detected is placed between the clamping blocks 54, at the moment, the electric telescopic rod 51 is started by a worker through the controller 3, as the racks 52 at the telescopic end of the electric telescopic rod 51 are meshed with teeth on the gears 53, and when the telescopic end of the electric telescopic rod 51 extends, thus, the rack 52 drives the gear 53 to rotate, and when the gear 53 rotates, the connecting shaft 56 drives the clamping block 54 to relatively rotate, as the clamping block 54 is of a 'psittacosis' structure, composite materials with different sizes can be firmly clamped, after the composite materials are fixedly clamped, the motor 4 is controlled to rotate reversely, the bidirectional threaded rod 10 is used for controlling the movable frame 8 to simultaneously move towards the left end and the right end of the workbench 1, the movable frame 8 can detect the moving distance of the movable frame 8 in real time in the moving process, after the composite materials are stretched and broken, the maximum bearing tensile strength of the composite materials can be obtained, and the anti-slip pad 55 at the outer side of the clamping block 54 can improve the friction force between the clamping block 54 and the composite materials, so that the occurrence of deviation of detected data is reduced.

The circuit connection related to the utility model is a conventional means adopted by the person skilled in the art, can obtain technical teaching through limited tests, and belongs to the widely used prior art.

The components not described in detail herein are prior art.

Although the specific embodiments of the present utility model have been described in detail, the present utility model is not limited to the above embodiments, and various changes and modifications without inventive labor may be made within the scope of the present utility model without departing from the spirit of the present utility model, which is within the scope of the present utility model.

Claims

1. The utility model provides a tensile detection device, includes workstation (1), its characterized in that, both ends are provided with L shape backup pad (2) respectively about workstation (1), rotate between L shape backup pad (2) and install bi-directional threaded rod (10), the screw thread opposite direction at both ends about bi-directional threaded rod (10), one of them the right-hand member of L shape backup pad (2) is provided with motor (4), the output shaft of motor (4) passes through the through-hole that sets up on L shape backup pad (2) and bi-directional threaded rod (10) right-hand member fixed connection, both ends are threaded respectively about bi-directional threaded rod (10) have movable rack (8), movable rack (8) respectively with spout (7) sliding connection that set up on workstation (1), both ends are provided with clamp unit (5) respectively around the bottom of movable rack (8) with slide rail (6) sliding connection that symmetry set up around the top surface, movable rack (8) outside front end middle part fixed mounting has displacement sensor (9) respectively.

2. A stretch testing device according to claim 1, wherein: the clamping unit (5) comprises an electric telescopic rod (51), racks (52), gears (53), clamping blocks (54) and a connecting shaft (56), wherein the connecting shaft (56) is provided with two groups, the connecting shaft (56) is respectively rotatably installed at the front end and the rear end of the movable frame (8), the clamping blocks (54) are respectively fixedly installed at the top ends of the connecting shaft (56), the clamping blocks (54) are of a psittacosis-shaped structure, the gears (53) are respectively fixedly installed at the bottoms of the connecting shaft (56), the electric telescopic rod (51) is provided with two groups, the electric telescopic rod (51) is respectively symmetrically arranged at the bottom of the movable frame (8), the telescopic ends of the electric telescopic rod (51) are respectively fixedly installed with the racks (52), and the racks (52) are respectively meshed with teeth arranged on the gears (53).

3. A stretch testing device according to claim 2, wherein: and the outer side surfaces of the clamping blocks (54) are respectively provided with an anti-slip pad (55), and the anti-slip pads (55) are silica gel pads.

4. A stretch testing device according to claim 1, wherein: mounting holes (11) are respectively formed in the front end and the rear end of the bottom of the L-shaped supporting plate (2).

5. A stretch testing device according to claim 1, wherein: the workbench is characterized in that a controller (3) is arranged at the right end of the front side of the workbench (1), the output end of the controller (3) is electrically connected with the input ends of the motor (4) and the electric telescopic rod (51), and the input end of the controller (3) is electrically connected with the output ends of the displacement sensor (9) and the external power supply.