A digital mechanical properties test system for self-constrained steel structure spatial nodes

Abstract

The present invention discloses a digital mechanical property test system for a self-constrained steel structure space node, which specifically relates to the technical field of steel structure, including a base for support, on which two sets of relatively arranged pressurized test components are arranged, and the pressurized test components include a slide arranged on the top of the base, on which a slide seat is arranged, and the slide seat is slidably connected to the slide. The clamp arm of the present invention drives the clamp arm and the protective plate to squeeze the workpiece through the elasticity of the spring itself, ensuring the stability of the workpiece when it is placed, and the reinforced clamp frame and the reinforced pulling roller can approach the fixed workpiece, so that the reinforced pulling roller contacts the workpiece, and the workpiece is subjected to an extrusion test, thereby realizing the function of anti-deformation detection of the steel structure node.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structures, and more specifically to a digital mechanical property testing system for space nodes of self-constrained steel structures. Background Art

[0002] Steel structure nodes refer to the parts where the various steel components that make up the steel structure are connected together by means of connections. They are the key parts that connect rods and components. Their main function is to bear the input and output forces, torque and axial forces, and transmit them to other parts. Steel structure nodes can be divided into rigid nodes, semi-rigid nodes and flexible nodes according to their forms. Rigid nodes have very high rigidity and can effectively limit the deformation of components, ensuring that there is no relative displacement between nodes and components when subjected to force.

[0003] The main purpose of conducting experiments on steel structure nodes is to study and evaluate the mechanical properties of nodes, including bearing capacity, deformation characteristics, failure mode, etc. Through experiments, we can understand the behavior of nodes under actual stress conditions, verify the accuracy and reliability of design calculations, discover possible problems and deficiencies in node design, and provide a basis for node optimization and improvement.

[0004] At present, complex multi-directional nodes in large-span spaces are formed by the intersection of multi-directional rods. Each rod bears axial tension or pressure under the action of its own gravity and external load, thus forming a complex stress state on the node. For this purpose, a digital mechanical properties test system for self-constrained steel structure space nodes is provided. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a digital mechanical properties testing system for a self-constrained steel structure spatial node, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a digital mechanical property test system for a self-constrained steel structure space node, comprising a base for support, on which two sets of pressurized test assemblies arranged opposite to each other are arranged;

[0007] The pressurized test assembly comprises a slide arranged on the top of the base, a slide seat is arranged on the slide, the slide seat is slidably connected to the slide, a hydraulic rod for driving the slide seat to move is arranged at one end of the slide, a connecting plate for support is arranged on the top of the reinforced clamp frame, and an upper connecting frame is arranged on the top of the connecting plate;

[0008] It can be seen that in the above technical solution, the hydraulic rod drives the slide seat to slide on the slide table, so that the reinforcing clamp frame and the reinforcing roller can approach the fixed workpiece, so that the reinforcing roller contacts the workpiece and performs an extrusion test on the workpiece;

[0009] One end of the slide is provided with a transverse plate installed on the base, and both ends of the transverse plate are provided with connecting blocks for support, and both sides of the two connecting blocks are provided with limiting shafts for support, and each limiting shaft is rotatably connected with a clamping arm, and a misalignment opening for guiding is opened on the clamping arm, and a protective plate for limiting the workpiece is provided on the top of the clamping arm, and a triangular plate installed on the connecting block is slidably connected in the misalignment opening, and a spring hooked on two adjacent clamping arms is provided at the bottom of the connecting block, and a supporting plate for lifting is provided on the top of the transverse plate;

[0010] It can be seen that in the above technical solution, the clamp arm is subjected to the pressure when the workpiece is placed, so that the clamp arm rotates along the axis point where the clamp arm and the limit shaft are connected, and at the same time the spring is compressed, so that the clamp arm can easily drive the clamp arm and the protective plate to squeeze the workpiece through the elasticity of the spring itself, thereby ensuring the stability of the workpiece when it is placed;

[0011] A turntable is provided at the bottom of the transverse plate, and a first driving motor installed on a base and used for driving the transverse plate to rotate is provided at the bottom of the turntable. Reinforced clamping frames for support are provided on both sides of the transverse plate, and limited shaft seats are provided at both ends of each of the reinforced clamping frames, and a reinforcing pulling roller is provided between the two limited shaft seats. An upper connecting frame is provided on the top of the connecting plate, and a screw transmission module is provided in the upper connecting frame, and a testing machine is provided on the screw transmission module, and an industrial camera is provided at one end of the testing machine. A slot is penetrated through the connecting plate, and the bottom of the testing machine penetrates the slot and extends to the outside of the reinforcing pulling roller, and a second driving motor is provided on one of the two limited shaft seats, and the output end of the second driving motor extends to one end of the reinforcing pulling roller;

[0012] It can be seen that in the above technical solution, when the slide is displaced, the testing machine and the industrial camera can also be driven to move, and the test machine is driven by the screw transmission module to adjust the position on the slot, thereby realizing the function of anti-deformation detection of the steel structure node;

[0013] The digital mechanical properties test system of the self-constrained steel structure space node includes the following steps:

[0014] Step 1: The staff installs the device at the designated position. When testing the node performance of the workpiece, the workpiece is placed between two adjacent clamping arms and supported by a support plate. When the workpiece is placed on the support plate, the clamping arm is subjected to the pressure of the workpiece when it is placed, causing the clamping arm to rotate along the axis point where the clamping arm and the limit shaft are connected, and at the same time, the spring is compressed, making it easy for the clamping arm to drive the clamping arm and the protective plate to squeeze the workpiece through the elasticity of the spring itself, thereby ensuring the stability of the workpiece when it is placed.

[0015] Step 2: After the workpiece is fixed, the hydraulic rod drives the slide to slide on the slide, so that the reinforcing clamp frame and the reinforcing roller can approach the fixed workpiece, so that the reinforcing roller contacts the workpiece, and the workpiece is subjected to an extrusion test;

[0016] Step three: When the slide is moved, it can also drive the test machine and the industrial camera to move, and the test machine is driven by the screw transmission module to adjust the position on the slot.

[0017] Technical effects and advantages of the present invention:

[0018] 1. The present invention causes the clamp arm to rotate along the axis point where the clamp arm is connected to the limit shaft by the pressure applied to the clamp arm when the workpiece is placed, and at the same time causes the spring to be compressed, so that the clamp arm can drive the clamp arm and the protective plate to squeeze the workpiece through the elasticity of the spring itself, thereby ensuring the stability of the workpiece when it is placed;

[0019] 2. The present invention drives the slide seat to slide on the slide table through a hydraulic rod, so that the reinforcing clamp frame and the reinforcing roller can approach the fixed workpiece, so that the reinforcing roller contacts the workpiece and performs an extrusion test on the workpiece;

[0020] 3. When the slide is displaced, the present invention can also drive the test machine and the industrial camera to move, and the test machine is driven to adjust its position on the slot through the screw drive module;

[0021] To sum up, the overall design is simple and the structure is reasonable. Through the corresponding coordination of various structures, the clamp arm is subjected to the pressure when the workpiece is placed, which makes the clamp arm rotate along the axis point of the connection between the clamp arm and the limit shaft, and at the same time makes the spring compressed, so that the clamp arm can easily drive the clamp arm and the protective plate to squeeze the workpiece through the elasticity of the spring itself, thereby ensuring the stability of the workpiece when it is placed. The reinforced clamp frame and the reinforced pulling roller can be close to the fixed workpiece, so that the reinforced pulling roller contacts the workpiece, and the workpiece is subjected to an extrusion test, thereby realizing the function of anti-deformation detection of the steel structure node. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2It is a side view of the overall structure of the present invention.

[0025] Figure 3 It is a front view of the pressurized test assembly of the present invention.

[0026] Figure 4 It is a stereoscopic diagram of the reinforced pulling roller, the reinforced clamping frame and the connecting plate of the present invention.

[0027] Figure 5 It is a stereoscopic diagram of the cross plate, the supporting plate, the clamping arm and the connecting block of the present invention.

[0028] Figure 6 For the present invention Figure 5 Exploded diagram.

[0029] Figure 7 It is a stereoscopic diagram of the testing machine, slide table, slide seat and connecting plate of the present invention.

[0030] Figure 8 It is a stereoscopic diagram of the reinforced pulling roller, the reinforced clamping frame and the limiting shaft seat of the present invention.

[0031] The reference numerals are: 1, base; 101, slide; 102, slide seat; 103, hydraulic rod; 104, connecting plate; 105, upper frame;

[0032] 2. Horizontal plate; 201. Connecting block; 202. Limiting shaft; 203. Clamp arm; 204. Dislocation opening; 205. Protective plate; 206. Triangular plate; 207. Spring; 208. Support plate;

[0033] 3. Turntable; 301. First drive motor; 302. Slot hole; 303. Screw drive module; 304. Testing machine; 305. Industrial camera; 306. Strengthened clamping frame; 307. Limiting shaft seat; 308. Strengthened pulling roller; 309. Second drive motor. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0036] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] As attached Figure 1-8 A self-constrained steel structure space node digital mechanical property test system is shown. Through the pressure test assembly set on the base 1, the clamp arm 203 is subjected to the pressure when the workpiece is placed, so that the clamp arm 203 rotates along the axis point of the connection between the clamp arm 203 and the limit shaft 202, and at the same time, the spring 207 is compressed, so that the clamp arm 203 drives the clamp arm 203 and the protective plate 205 to squeeze the workpiece through the elasticity of the spring 207 itself, ensuring the stability of the workpiece when it is placed. The reinforced clamp frame 306 and the reinforced pulling roller 308 can approach the fixed workpiece, so that the reinforced pulling roller 308 contacts the workpiece, and the workpiece is subjected to an extrusion test, realizing the function of anti-deformation detection of the steel structure node, and the specific structural arrangement of the pressure test assembly is as follows;

[0038] The pressurized test assembly includes a slide 101 disposed on the top of the base 1, a slide seat 102 is disposed on the slide 101, the slide seat 102 is slidably connected to the slide 101, a hydraulic rod 103 for driving the slide seat 102 to move is disposed at one end of the slide 101, a connecting plate 104 for support is disposed on the top of the reinforcing clamp frame 306, and an upper connecting frame 105 is disposed on the top of the connecting plate 104;

[0039] One end of the slide 101 is provided with a horizontal plate 2 installed on the base 1, and both ends of the horizontal plate 2 are provided with connecting blocks 201 for support, and both sides of the two connecting blocks 201 are provided with limiting shafts 202 for support, and each limiting shaft 202 is rotatably connected with a clamping arm 203, and a misalignment opening 204 for guiding is opened on the clamping arm 203, and a protective plate 205 for limiting the workpiece is provided on the top of the clamping arm 203, and a triangular plate 206 installed on the connecting block 201 is slidably connected in the misalignment opening 204, and a spring 207 hooked on two adjacent clamping arms 203 is provided at the bottom of the connecting block 201, and a supporting plate 208 for lifting is provided on the top of the horizontal plate 2;

[0040] A turntable 3 is provided at the bottom of the transverse plate 2, and a first driving motor 301 installed on the base 1 and used for driving the transverse plate 2 to rotate is provided at the bottom of the turntable 3. Reinforced clamping frames 306 for support are provided on both sides of the transverse plate 2, and limited shaft seats 307 are provided at both ends of each reinforcing clamping frame 306, and a reinforcing pull roller 308 is provided between the two limited shaft seats 307. An upper connecting frame 105 is provided on the top of the connecting plate 104, and a screw transmission module 303 is provided in the upper connecting frame 105. A testing machine 304 is provided on the screw transmission module 303, and an industrial camera 305 is provided at one end of the testing machine 304. A slot 302 is penetrated through the connecting plate 104, and the bottom of the testing machine 304 penetrates the slot 302 and extends to the outside of the reinforcing pull roller 308. A second driving motor 309 is provided on one of the two limited shaft seats 307, and the output end of the second driving motor 309 extends to one end of the reinforcing pull roller 308.

[0041] The digital mechanical properties test system of the self-constrained steel structure space node includes the following steps:

[0042] Step 1: The staff installs the device at the designated position. When testing the node performance of the workpiece, the workpiece is placed between two adjacent clamping arms 203, and the workpiece is supported by the support plate 208. When the workpiece is placed on the support plate 208, the clamping arm 203 is subjected to the pressure of the workpiece when it is placed, so that the clamping arm 203 rotates along the axis point where the clamping arm 203 and the limit shaft 202 are connected, and the spring 207 is compressed by force, so that the clamping arm 203 is easy to drive the clamping arm 203 and the protective plate 205 to squeeze the workpiece through the elasticity of the spring 207 itself, so as to ensure the stability of the workpiece when it is placed;

[0043] Step 2: After the workpiece is fixed, the hydraulic rod 103 drives the slide 102 to slide on the slide 101, so that the reinforcing clamp frame 306 and the reinforcing roller 308 can approach the fixed workpiece, so that the reinforcing roller 308 contacts the workpiece, and the workpiece is subjected to an extrusion test;

[0044] Step three: when the slide 102 is displaced, it can also drive the testing machine 304 and the industrial camera 305 to be displaced, and the testing machine 304 is driven by the screw transmission module 303 to adjust the position on the slot 302 .

[0045] When the above structure is used, the workpiece is placed between two adjacent clamping arms 203, and the workpiece is supported by the support plate 208. When the workpiece is placed on the support plate 208, the clamping arm 203 is subjected to the pressure of the workpiece when it is placed, so that the clamping arm 203 rotates along the axis point where the clamping arm 203 and the limit shaft 202 are connected, and the spring 207 is compressed by force, so that the clamping arm 203 drives the clamping arm 203 and the protective plate 205 to squeeze the workpiece through the elasticity of the spring 207 itself, thereby ensuring the stability of the workpiece when it is placed;

[0046] The hydraulic rod 103 drives the slide 102 to slide on the slide table 101, so that the reinforcing clamp frame 306 and the reinforcing pull roller 308 can approach the fixed workpiece, so that the reinforcing pull roller 308 contacts the workpiece, and the extrusion test is performed on the workpiece;

[0047] When the slide 102 is displaced, it can also drive the testing machine 304 and the industrial camera 305 to move. The testing machine 304 is driven by the screw transmission module 303 to adjust the position on the slot 302, thereby realizing the function of anti-deformation detection of the steel structure node.

[0048] Different from the prior art, the present application discloses a digital mechanical property testing system for self-constrained steel structure spatial nodes. When the workpiece is placed, the clamp arm 203 is subjected to pressure so that the clamp arm 203 rotates along the axis point of the connection between the clamp arm 203 and the limit shaft 202, and at the same time, the spring 207 is compressed, so that the clamp arm 203 can drive the clamp arm 203 and the protective plate 205 to squeeze the workpiece through the elasticity of the spring 207 itself, thereby ensuring the stability of the workpiece when it is placed. The reinforced clamp frame 306 and the reinforced pulling roller 308 can approach the fixed workpiece, so that the reinforced pulling roller 308 is in contact with the workpiece, and the workpiece is subjected to an extrusion test, thereby realizing the function of anti-deformation detection of the steel structure node.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A digital mechanical properties test system for a self-constrained steel structure spatial node, comprising a base (1) for support, characterized in that: The base (1) is provided with two sets of pressurized test components arranged opposite to each other; The pressurized test assembly comprises a slide table (101) arranged on the top of the base (1), and a slide seat (102) is arranged on the slide table (101); A transverse plate (2) mounted on the base (1) is disposed at one end of the slide (1), connecting blocks (201) for support are disposed at both ends of the transverse plate (2), limiting shafts (202) for support are disposed on both sides of the two connecting blocks (201), and each limiting shaft (202) is rotatably connected to a clamping arm (203); A turntable (3) is provided at the bottom of the transverse plate (2), and a first drive motor (301) is provided at the bottom of the turntable (3) and is mounted on the base (1) and is used to drive the transverse plate (2) to rotate. Reinforced clamping frames (306) for support are provided on both sides of the transverse plate (2), and both ends of each of the reinforced clamping frames (306) are provided with limited shaft seats (307), and a reinforced pulling roller (308) is provided between the two limited shaft seats (307); The slide (102) is slidably connected to the slide table (101), and one end of the slide table (101) is provided with a hydraulic rod (103) for driving the slide (102) to move. The hydraulic rod (103) drives the slide (102) to slide on the slide table (101), thereby enabling the reinforcing clamping frame (306) and the reinforcing pulling roller (308) to approach the fixed workpiece, so that the reinforcing pulling roller (308) contacts the workpiece.

2. The digital mechanical properties testing system for self-constrained steel structure spatial nodes according to claim 1 is characterized by: A connecting plate (104) for support is provided on the top of the reinforcing clamp frame (306), and an upper connecting frame (105) is provided on the top of the connecting plate (104).

3. The digital mechanical properties testing system for self-constrained steel structure spatial nodes according to claim 2 is characterized by: The clamp arm (203) is provided with a misalignment opening (204) for guiding, and the top of the clamp arm (203) is provided with a protective plate (205) for limiting the position of the workpiece.

4. The digital mechanical properties testing system for self-constrained steel structure spatial nodes according to claim 3 is characterized by: A triangular plate (206) mounted on the connection block (201) is slidably connected in the dislocation opening (204); a spring (207) hooked on two adjacent clamping arms (203) is provided at the bottom of the connection block (201); and a supporting plate (208) for lifting is provided at the top of the transverse plate (2).

5. The digital mechanical properties testing system for self-constrained steel structure spatial nodes according to claim 4 is characterized by: An upper connection frame (105) is arranged on the top of the connection plate (104), a screw transmission module (303) is arranged inside the upper connection frame (105), and a testing machine (304) is arranged on the screw transmission module (303).

6. The digital mechanical properties testing system for self-constrained steel structure spatial nodes according to claim 5 is characterized by: An industrial camera (305) is provided at one end of the testing machine (304), a slot (302) is penetrated through the connecting plate (104), and the bottom of the testing machine (304) penetrates the slot (302) and extends to the outside of the reinforcing roller (308).

7. The digital mechanical properties testing system for self-constrained steel structure space nodes according to claim 6 is characterized by: A second drive motor (309) is provided on one of the two limiting shaft seats (307), and an output end of the second drive motor (309) extends to one end of the reinforcing pulling roller (308).

8. The digital mechanical properties testing system for self-constrained steel structure space nodes according to claim 7 is characterized by: The following steps are involved: Step 1: The workpiece is supported by the support plate (208), and the clamp arm (203) is subjected to pressure from the workpiece when the clamp arm (203) is placed, so that the clamp arm (203) rotates along the axis point where the clamp arm (203) and the limit shaft (202) are connected, and at the same time, the spring (207) is compressed, so that the clamp arm (203) drives the clamp arm (203) and the protective plate (205) to squeeze the workpiece through the elasticity of the spring (207); Step 2: The hydraulic rod (103) drives the slide seat (102) to slide on the slide table (101), thereby allowing the reinforcing clamp frame (306) and the reinforcing pull roller (308) to approach the fixed workpiece, so that the reinforcing pull roller (308) contacts the workpiece, and performs an extrusion test on the workpiece; Step three, when the slide seat (102) is displaced, it can also drive the testing machine (304) and the industrial camera (305) to be displaced, and the testing machine (304) is driven by the screw transmission module (303) to adjust the position on the slot (302).

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