Multifunctional steel performance determination teaching experiment device

Abstract

The utility model provides a multifunctional steel performance determination teaching experiment device. The multifunctional steel performance determination teaching experiment device comprises a main body, an upper cavity area located at the upper part of the main body, a lower cavity area located at the lower part of the main body and a central processing part, the top and the bottom of the upper cavity area are respectively provided with a first accommodating part for accommodating the end part of a sample to be tested, and at least one first accommodating part is of a telescopic structure; the top and the bottom of the lower cavity area are respectively provided with a second accommodating part for accommodating the end part of a sample to be tested, and at least one second accommodating part is of a telescopic structure; the central processing part comprises a data acquisition module and a display module; the data acquisition module is provided with a plurality of connecting ends which are electrically connected with strain acquisition lines on a to-be-tested sample; and the display module is electrically connected with the data acquisition module. According to the utility model, the experiment display efficiency can be improved, diversified experiment requirements can be met, the visualization effect of experiment teaching can be effectively improved, and the experiment safety can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of experimental teaching devices, specifically relating to a multifunctional teaching experimental device for determining the properties of steel. Background Technology

[0002] Traditional experimental teaching equipment for steel structure principles has limited functionality and cannot simultaneously meet the experimental needs of multiple components such as beams, columns, and joints. Existing equipment suffers from problems such as complex specimen replacement, low data acquisition efficiency, and insufficient safety protection, making it difficult to intuitively demonstrate load-deformation relationships and stress distribution within joints. This experimental platform, through integrated structural design and a multi-channel data acquisition system, achieves efficient and safe comprehensive teaching experimental functions. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a multifunctional teaching experimental device for measuring the properties of steel. It aims to achieve the integrated and synchronous demonstration of multiple experiments through a specific structural design, and further realize visualized teaching by combining hardware and software.

[0004] One aspect of this utility model provides a multifunctional teaching experimental device for determining the properties of steel, comprising: a main body, an upper cavity area located at the top of the main body, a lower cavity area located at the bottom of the main body, and a central processing unit;

[0005] The upper cavity area is provided with a first receiving part at the top and bottom for accommodating the end of the test sample, and at least one of the first receiving parts is a retractable structure;

[0006] The lower cavity is provided with a second receiving part at the top and bottom for accommodating the end of the test sample, and at least one of the second receiving parts is a retractable structure;

[0007] The central processing unit includes a data acquisition module and a display module;

[0008] The data acquisition module is equipped with several connection terminals that are electrically connected to the strain acquisition line on the test sample.

[0009] The display module is electrically connected to the data acquisition module.

[0010] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the telescopic structure is specifically a hydraulic actuator. The device also includes an oil pump located at the bottom of the main body. The oil pump includes an oil pump body and an oil pump handle. The oil pump body is connected to the oil pump handle and the hydraulic actuator respectively.

[0011] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the central processing unit further includes a control module, which is electrically connected to the retractable first accommodating part and the retractable second accommodating part respectively.

[0012] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the retractable structure is specifically an actuator, and the control module is electrically connected to the actuator.

[0013] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the ends of the first accommodating part and the second accommodating part are provided with fixing parts for fixing the end of the test sample. The fixing parts include clamping parts, slots, screw holes and / or tenons.

[0014] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the main body also includes a central control area located between the upper cavity area and the lower cavity area, and the central control area is provided with the central processing unit.

[0015] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the upper cavity area is detachably fastened to the top of the central control area.

[0016] In a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the test sample is divided into several test areas, and each test area is connected to a strain acquisition line. In another preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, at least one side of the upper cavity and the lower cavity is a hollow structure.

[0017] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the connection end is an aviation plug.

[0018] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the opposite sides of the lower cavity are hollow structures, and the opposite sides of the lower cavity are also provided with crossbeams of equal height.

[0019] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the first accommodating part located at the bottom of the upper cavity and the second accommodating part located at the top of the lower cavity are retractable structures.

[0020] As a preferred embodiment of the multifunctional steel performance testing teaching experimental device of this utility model, the device further includes a protective cover located outside the main body, the protective cover being a transparent structure.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This utility model can simultaneously conduct experimental demonstrations in both the upper and lower cavity areas, improving the efficiency of experimental demonstration;

[0023] 2. The lower cavity of this utility model can be used for both longitudinal and transverse performance testing of steel structures, thus better meeting diverse experimental needs.

[0024] 3. This utility model improves the visualization effect of experimental teaching by setting a display module to synchronously display the stress change process during the experiment;

[0025] 4. This utility model improves the safety of experiments by setting up a protective cover. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the device structure of this utility model;

[0027] Figure 2 A schematic diagram of the structure for conducting a beam load test on the device of this utility model;

[0028] Figure 3 This is a schematic diagram of the connection structure between the device of this utility model and the strain acquisition line of the test sample;

[0029] Figure 4 This is a stress distribution cloud map obtained from the experiment of this utility model;

[0030] Among them, 1-upper cavity area, 2-lower cavity area, 3-central processing unit, 4-first accommodating part, 5-second accommodating part, 6-crossbeam, 7-test sample, 8-distribution beam, 9-oil pump, 10-oil pump handle, 11-strain acquisition line, 12-aviation plug, 13-data acquisition module. Detailed Implementation

[0031] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] like Figure 1 As shown, one embodiment of this utility model provides a multifunctional steel performance testing teaching experimental device, including: a main body, an upper cavity area 1 located at the upper part of the main body, a lower cavity area 2 located at the lower part of the main body, and a central control area located between the upper cavity area and the lower cavity area, wherein the central control area is provided with the central processing unit 3;

[0033] Both the front and rear sides of the upper cavity 1 and the lower cavity 2 are hollow structures;

[0034] The upper cavity 1 is provided with a first receiving part 4 at the top and bottom for receiving the end of the test sample. The first receiving part 4 at the bottom is extended and retracted by an actuator. The end of the first receiving part for connecting the test sample is provided with a slot structure.

[0035] The lower cavity 2 is provided with a second receiving part 5 at the top and bottom for receiving the end of the test sample. The second receiving part 5 at the top is extended and retracted by an actuator. The end of the second receiving part for connecting the test sample is provided with a threaded hole.

[0036] The central processing unit includes a control module, a data acquisition module, and a display module;

[0037] The control module is electrically connected to the actuators on the first accommodating part 4 and the second accommodating part 5, respectively.

[0038] The data acquisition module is equipped with several connection terminals that are electrically connected to the strain acquisition line on the test sample.

[0039] The display module is electrically connected to the data acquisition module;

[0040] The device is powered by an external power source.

[0041] In this utility model, the specific type and structure of the actuator are not particularly limited. Any actuator in the art that can realize the extension and retraction of the electrically controlled accommodating part can be applied to this utility model.

[0042] During the experimental demonstration, holes are first drilled at both ends of the test sample 7, and then aligned with the threaded holes on the second receiving part 5. Bolts are then used to securely connect it to the second receiving part 5. The strain acquisition line on the test sample 7 is electrically connected to the connection terminal of the data acquisition module. The control module in the central processing unit controls the actuator on the second receiving part 5 to extend it according to the set parameters. At this time, the pressure exerted on the test sample 7 is transmitted to the display module for display via the data acquisition module, thus realizing a teaching demonstration of steel pressure testing.

[0043] Based on this, another test sample can be simultaneously processed at both ends to fit the slots of the first receiving part, and then placed inside the first receiving part. The strain acquisition line set on the test sample is electrically connected to the connection terminal of the data acquisition module. Similarly, the actuator on the first receiving part 4 is controlled by the control module in the central processing unit to drive the first receiving part 4 to retract according to the set parameters. At this time, the tensile force on the test sample is transmitted to the display module for display through the data acquisition module, thereby realizing the teaching demonstration of steel tensile testing.

[0044] In another embodiment of this utility model, the four sides of the upper cavity 1 and the lower cavity 2 are hollow structures, which allows for direct observation of the physical changes of the test sample in various directions under the action of force.

[0045] In another embodiment of this utility model, the upper cavity 1 is detachably fastened to the top of the central control area.

[0046] In another embodiment of this utility model, the opposite sides of the lower cavity (e.g., the front and rear sides or the left and right sides) are hollow structures, and a horizontal beam 6 of equal height is set on each of these opposite sides as a support. This allows for load testing experiments on the sample to be tested. In use, the sample to be tested is placed horizontally on the two beams 6, with a hinge support placed between the sample and the beams 6. The strain acquisition line on the sample is electrically connected to the connection terminal of the data acquisition module. The control module in the central processing unit controls the hydraulic actuator on the second accommodating part 5 to extend the second accommodating part 5 according to the set parameters. At this time, the bending stress on the sample is transmitted to the display module for display through the data acquisition module, thereby realizing a teaching demonstration of the bending performance testing of steel.

[0047] See Figure 2 This utility model also provides a manually operated multifunctional steel performance testing teaching experimental device, including: a main body, an upper cavity area 1 located at the top of the main body, a lower cavity area 2 located at the bottom of the main body, a central control area located between the upper cavity area and the lower cavity area, the central control area being provided with the central processing unit 3, and an oil pump located at the bottom of the main body;

[0048] Both the front and rear sides of the upper cavity 1 and the lower cavity 2 are hollow structures;

[0049] The upper cavity 1 is provided with a first receiving part 4 at the top and bottom for receiving the end of the test sample. The first receiving part 4 at the bottom is driven to extend and retract by a hydraulic actuator. The end of the first receiving part is provided with a slot structure.

[0050] The lower cavity 2 is provided with a second receiving part 5 at the top and bottom for receiving the end of the test sample. The second receiving part 5 at the top is driven to extend and retract by a hydraulic actuator. The end of the second receiving part is provided with a screw hole.

[0051] The central processing unit includes a data acquisition module and a display module;

[0052] The data acquisition module is equipped with several connection terminals that are electrically connected to the strain acquisition line on the test sample.

[0053] The display module is electrically connected to the data acquisition module;

[0054] The oil pump includes upper and lower oil circuits, an oil circuit switching switch, an oil pump body, and an oil pump handle, thereby driving the hydraulic actuator to move up and down. The hydraulic actuator is a double-outlet piston type, and the piston outlets are respectively connected to the first accommodating part 4 at the bottom of the upper cavity 1 and the second accommodating part 5 at the top of the lower cavity 2 to drive its movement.

[0055] The device is powered by an external power source.

[0056] During the experimental demonstration, the test sample is first fixed to the accommodating parts of the upper cavity 1 and the lower cavity 2 respectively. The oil pump handle 10 is shaken to drive the hydraulic actuator to move up and down, thereby realizing the extension and retraction of the first accommodating part at the bottom of the upper cavity and the second accommodating part at the top of the lower cavity, and thus applying and releasing the experimental load on the test sample.

[0057] See Figure 2 In another embodiment of this utility model, a distribution beam 8 can be provided at the end of the second receiving part 5 at the top of the lower cavity to transfer the pressure load to the test sample, thereby conducting a bending test on the steel beam.

[0058] See Figure 3 In another embodiment of this utility model, the test sample is divided into 5×6 test areas, and each test area is connected to a strain acquisition line 11. The data acquisition module 13 is connected to the strain acquisition line 11 via an aviation connector 12 (male and female connectors on both sides). During the experiment, the data acquisition module 13 acquires the strain value of each test area, converts it, and transmits it to the display module, thereby displaying a stress distribution cloud map (e.g., Figure 4 In the cloud map, the values ​​represent the stress values ​​of each region.

[0059] In another embodiment of the present invention, the device further includes a protective cover located outside the main body. The protective cover is a transparent structure, thereby improving safety during the demonstration experiment.

[0060] It should be noted that, based on the above embodiments of this utility model, those skilled in the art can fully realize the scope of the independent claims and dependent claims of this utility model, and the implementation process and methods are the same as those in the above embodiments; and the parts of this utility model not described in detail belong to the well-known technology in the art. However, the protection scope of this utility model is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A multifunctional teaching experimental device for determining the properties of steel, characterized in that, include: Main body, upper cavity area located at the top of the main body, lower cavity area located at the bottom of the main body, central processing unit; The upper cavity area is provided with a first receiving part at the top and bottom for accommodating the end of the test sample, and at least one of the first receiving parts is a retractable structure; The lower cavity is provided with a second receiving part at the top and bottom for accommodating the end of the test sample, and at least one of the second receiving parts is a retractable structure; The central processing unit includes a data acquisition module and a display module; The data acquisition module is equipped with several connection terminals that are electrically connected to the strain acquisition line on the test sample. The display module is electrically connected to the data acquisition module.

2. The teaching experimental apparatus as described in claim 1, characterized in that, The retractable structure is specifically a hydraulic actuator. The device also includes an oil pump located at the bottom of the main body. The oil pump includes an oil pump body and an oil pump handle. The oil pump body is connected to the oil pump handle and the hydraulic actuator, respectively.

3. The teaching experimental apparatus as described in claim 1, characterized in that, The central processing unit also includes a control module, which is electrically connected to the retractable first accommodating part and the retractable second accommodating part, respectively.

4. The teaching experimental apparatus as described in claim 3, characterized in that, The retractable structure is specifically an actuator, and the control module is electrically connected to the actuator.

5. The teaching experimental apparatus as described in any one of claims 1-4, characterized in that, Both the first accommodating part and the second accommodating part are provided with a fixing part for fixing the end of the test sample. The fixing part includes a clamping member, a slot, a screw hole and / or a tenon.

6. The teaching experimental apparatus as described in any one of claims 1-4, characterized in that, The main body also includes a central control area located between the upper cavity area and the lower cavity area, the central control area being provided with the central processing unit, and the upper cavity area being closable and snapped onto the top of the central control area.

7. The teaching experimental apparatus as described in any one of claims 1-4, characterized in that, The test sample is divided into several test areas, and each test area is connected to a strain acquisition line.

8. The teaching experimental apparatus as described in any one of claims 1-4, characterized in that, At least one side of the upper cavity and the lower cavity is a hollow structure.

9. The teaching experimental apparatus as described in any one of claims 1-4, characterized in that, The opposite sides of the lower cavity are hollow structures, and crossbeams of equal height are also provided on the opposite sides of the lower cavity.

10. The teaching experimental apparatus according to any one of claims 1-4, characterized in that, The device also includes a protective cover located outside the main body, the protective cover being a transparent structure.

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