Digital mechanical property test system for self-constrained steel structure space node
Technical Field
The invention relates to the technical field of steel structures, in particular to a digital mechanical property test system for a self-constrained steel structure space node.
Background
The steel structure node refers to a part of each steel member forming the steel structure, which is connected together in a connecting mode, is a key part for connecting the rod piece and the member, and mainly plays a role in bearing the input force, the torque and the axial force and transmitting the input force, the torque and the axial force to other parts. The steel structure node can be divided into a rigid node, a semi-rigid node and a flexible node according to the form, wherein the rigid node has high rigidity, can effectively limit the deformation of a member, and ensures that no relative displacement exists between the node and the member when being stressed;
Experiments are mainly performed on the steel structure nodes to study and evaluate the mechanical properties of the nodes, including bearing capacity, deformation characteristics, failure modes and the like. Through experiments, the behavior of the node in the actual stress state can be known, the accuracy and the reliability of design calculation are verified, the possible problems and the possible defects in the design of the node are found, and the basis is provided for the optimization and the improvement of the node.
The existing large-span space complex multidirectional node is formed by converging multidirectional rods, each rod bears axial tension or pressure under the action of self gravity and external load, so that a complex stress state is formed on the node, and the digital mechanical property test system for the self-constrained steel structure space node is provided.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a digital mechanical property test system for a self-constrained steel structure space node, which aims to solve the problems in the background art.
In order to achieve the aim, the invention provides the technical scheme that the digital mechanical property test system for the self-constrained steel structure space node comprises a base for supporting, wherein two groups of oppositely arranged pressurizing test assemblies are arranged on the base;
The pressurizing test assembly comprises a sliding table arranged at the top of the base, a sliding seat is arranged on the sliding table and is in sliding connection with the sliding table, a hydraulic rod for driving the sliding seat to move is arranged at one end of the sliding table, a connecting plate for supporting is arranged at the top of the reinforcing clamping frame, and an upper connecting frame is arranged at the top of the connecting plate;
according to the technical scheme, the sliding seat is driven to slide on the sliding table through the hydraulic rod, so that the reinforcing clamping frame and the reinforcing pull roller can approach to the fixed workpiece, the reinforcing pull roller is contacted with the workpiece, and the workpiece is subjected to extrusion test;
One end of the sliding table is provided with a transverse plate arranged on the base, both ends of the transverse plate are provided with connecting blocks for supporting, both sides of the two connecting blocks are provided with limiting shafts for supporting, each limiting shaft is rotationally connected with a clamping arm, the clamping arm is provided with a dislocation port for guiding, the top of the clamping arm is provided with a protection plate for limiting a workpiece, a triangle plate mounted on the connecting block is connected in a sliding manner in the dislocation opening, the bottom of the connecting block is provided with springs hooked on two adjacent clamping arms, and the top of the transverse plate is provided with a supporting plate for lifting;
according to the technical scheme, the clamping arm is enabled to rotate along the axis point of the joint of the clamping arm and the limiting shaft by the pressure when the workpiece is placed, meanwhile, the spring is enabled to be stressed and compressed, the clamping arm is easy to squeeze the workpiece through the elastic driving clamping arm of the spring and the protection plate, and the stability of the workpiece when placed is ensured;
The bottom of the transverse plate is provided with a rotary table, the bottom of the rotary table is provided with a first driving motor which is arranged on the base and used for driving the transverse plate to rotate, both sides of the transverse plate are provided with reinforcing clamping frames used for supporting, both ends of each reinforcing clamping frame are provided with limiting shaft seats, a reinforcing pull roll is arranged between the two limiting shaft seats, the top of the connecting plate is provided with an upper connecting frame, a screw rod transmission module is arranged in the upper connecting frame, the screw rod transmission module is provided with a testing machine, one end of the testing machine is provided with an industrial camera, the connecting plate is provided with a slotted hole in a penetrating way, the bottom of the testing machine penetrates through the slotted hole and extends to the outer side of the reinforcing pull roll, one of the two limiting shaft seats is provided with a second driving motor, and the output end of the second driving motor extends to one end of the reinforcing pull roll;
According to the technical scheme, when the sliding seat is displaced, the tester and the industrial camera can be driven to displace, and the screw rod transmission module drives the tester to adjust the position of the slot hole, so that the function of deformation resistance detection of the steel structure node is realized;
a digital mechanical property test system for a self-constrained steel structure space node comprises the following steps:
Step one, a worker installs the device at a designated position, when the node performance of a workpiece is detected, the workpiece is placed between two adjacent clamping arms, the workpiece is supported by a supporting plate, when the workpiece is placed on the supporting plate, the clamping arms are pressed by the pressure of the workpiece when placed, so that the clamping arms rotate along the axis points of the connecting positions of the clamping arms and the limiting shafts, and meanwhile, the springs are stressed and compressed, so that the clamping arms are easy to squeeze the workpiece through the elastic driving clamping arms and the protection plates of the springs, and the stability of the workpiece when placed is ensured;
Step two, after the workpiece is fixed, the sliding seat is driven to slide on the sliding table through the hydraulic rod, so that the reinforcing clamping frame and the reinforcing pull roller can approach to the fixed workpiece, the reinforcing pull roller is contacted with the workpiece, and the workpiece is subjected to extrusion test;
and thirdly, driving the tester and the industrial camera to move when the slide seat moves, and driving the tester to adjust the position of the slot hole through the screw rod transmission module.
The invention has the technical effects and advantages that:
1. According to the invention, the clamping arm is enabled to rotate along the axis point of the joint of the clamping arm and the limiting shaft by the pressure when the clamping arm is placed by a workpiece, and meanwhile, the spring is enabled to be stressed and compressed, so that the clamping arm is easy to squeeze the workpiece through the elastic driving clamping arm of the spring and the protection plate, and the stability of the workpiece when placed is ensured;
2. According to the invention, the slide seat is driven to slide on the sliding table through the hydraulic rod, so that the reinforcing clamping frame and the reinforcing pull roller can approach to the fixed workpiece, the reinforcing pull roller is contacted with the workpiece, and the workpiece is subjected to extrusion test;
3. when the sliding seat is displaced, the invention can also drive the tester and the industrial camera to displace, and the screw rod transmission module drives the tester to adjust the position on the slotted hole;
To sum up, overall design is simple, and is rational in infrastructure, and through the corresponding cooperation of each structure use, the arm lock receives the pressure when the work piece is placed and makes the arm lock rotatory along the axle center point of arm lock and spacing hub connection department, makes the spring atress compress simultaneously, and the arm lock is easy to extrude the work piece through spring self elasticity drive arm lock and guard plate, guarantees the stability when the work piece is placed, strengthens the frame and strengthens the pull roll and can be close to the work piece after fixed for strengthen pull roll and work piece contact, carry out extrusion test to the work piece, realize carrying out the function of anti deformation detection to steel construction node.
Drawings
In order to more clearly illustrate the technical solutions of the present disclosure, the drawings that need to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings may be obtained according to these drawings to those of ordinary skill in the art. Furthermore, the drawings in the following description may be regarded as schematic diagrams, not limiting the actual size of the products, the actual flow of the methods, the actual timing of the signals, etc. according to the embodiments of the present disclosure.
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a side view of the overall structure of the present invention.
FIG. 3 is a front view of the compression testing assembly of the present invention.
Fig. 4 is a perspective view of the reinforcing pull roll, reinforcing clamping frame and connecting plate of the present invention.
Fig. 5 is a perspective view of the cross plate, pallet, clip arms and connecting block of the present invention.
Fig. 6 is an exploded view of fig. 5 in accordance with the present invention.
FIG. 7 is a perspective view of the tester, the slide and the connecting plate of the present invention.
Fig. 8 is a perspective view of the reinforcing pull roll, reinforcing clamping frame and limiting shaft seat of the present invention.
The reference numerals are 1, a base, 101, a sliding table, 102, a sliding seat, 103, a hydraulic rod, 104, a connecting plate, 105 and an upper connecting frame;
2. Transverse plates, 201, connecting blocks, 202, limiting shafts, 203, clamping arms, 204, dislocation ports, 205, protection plates, 206, triangular plates, 207, springs, 208 and supporting plates;
3. the device comprises a turntable, a first driving motor, 302, a slotted hole, 303, a screw transmission module, 304, a testing machine, 305, an industrial camera, 306, a reinforced clamping frame, 307, a limiting shaft seat, 308, a reinforced pull roller and 309, and a second driving motor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," and the like in embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
1-8, Through a pressurization test assembly arranged on a base 1, the clamp arm 203 is pressed by a workpiece to enable the clamp arm 203 to rotate along an axle center point at the joint of the clamp arm 203 and a limiting shaft 202, meanwhile, a spring 207 is stressed and compressed, the clamp arm 203 is easy to squeeze the workpiece through the elastic driving clamp arm 203 of the spring 207 and a protection plate 205, stability of the workpiece during placement is ensured, a reinforcing clamp frame 306 and a reinforcing pull roller 308 can approach to the fixed workpiece, the reinforcing pull roller 308 is enabled to contact with the workpiece, the workpiece is subjected to extrusion test, the function of deformation resistance detection on the steel structure node is realized, and the specific structure of the pressurization test assembly is set as follows;
The pressurizing test assembly comprises a sliding table 101 arranged at the top of the base 1, a sliding seat 102 is arranged on the sliding table 101, the sliding seat 102 is in sliding connection with the sliding table 101, a hydraulic rod 103 for driving the sliding seat 102 to move is arranged at one end of the sliding table 101, a connecting plate 104 for supporting is arranged at the top of a reinforcing clamping frame 306, and an upper connecting frame 105 is arranged at the top of the connecting plate 104;
One end of the sliding table 101 is provided with a transverse plate 2 which is arranged on the base 1, two ends of the transverse plate 2 are respectively provided with a connecting block 201 for supporting, two sides of each connecting block 201 are respectively provided with a limiting shaft 202 for supporting, each limiting shaft 202 is respectively connected with a clamping arm 203 in a rotating way, each clamping arm 203 is provided with a dislocation port 204 for guiding, the top of each clamping arm 203 is provided with a protection plate 205 for limiting a workpiece, the dislocation port 204 is slidably connected with a triangle 206 which is arranged on each connecting block 201, the bottom of each connecting block 201 is provided with a spring 207 which is hooked on the two adjacent clamping arms 203, and the top of each transverse plate 2 is provided with a supporting plate 208 for lifting;
The bottom of the transverse plate 2 is provided with a rotary table 3, the bottom of the rotary table 3 is provided with a first driving motor 301 which is arranged on the base 1 and is used for driving the transverse plate 2 to rotate, both sides of the transverse plate 2 are provided with reinforcing clamping frames 306 for supporting, both ends of each reinforcing clamping frame 306 are provided with limiting shaft seats 307, a reinforcing pull roll 308 is arranged between the two limiting shaft seats 307, the top of the connecting plate 104 is provided with an upper connecting frame 105, a screw rod transmission module 303 is arranged in the upper connecting frame 105, a testing machine 304 is arranged on the screw rod transmission module 303, one end of the testing machine 304 is provided with an industrial camera 305, a slotted hole 302 is formed in the connecting plate 104 in a penetrating way, the bottom of the testing machine 304 penetrates through the slotted hole 302 and extends to the outer side of the reinforcing pull roll 308, one of the two limiting shaft seats 307 is provided with a second driving motor 309, and the output end of the second driving motor 309 extends to one end of the reinforcing pull roll 308;
a digital mechanical property test system for a self-constrained steel structure space node comprises the following steps:
Step one, a worker installs the device at a designated position, when detecting the node performance of a workpiece, the workpiece is placed between two adjacent clamping arms 203, the workpiece is supported by a supporting plate 208, when the workpiece is placed on the supporting plate 208, the clamping arms 203 are pressed by the pressure when the workpiece is placed, so that the clamping arms 203 rotate along the axle center point of the connecting part of the clamping arms 203 and a limiting shaft 202, and meanwhile, the spring 207 is stressed and compressed, so that the clamping arms 203 are easy to drive the clamping arms 203 and a protection plate 205 to extrude the workpiece through the elasticity of the spring 207, and the stability of the workpiece in placing is ensured;
step two, after the workpiece is fixed, the slide seat 102 is driven to slide on the sliding table 101 through the hydraulic rod 103, so that the reinforcing clamping frame 306 and the reinforcing pull roller 308 can approach to the fixed workpiece, the reinforcing pull roller 308 contacts with the workpiece, and the workpiece is subjected to extrusion test;
Step three, when the slide 102 is displaced, the tester 304 and the industrial camera 305 are also driven to displace, and the screw driving module 303 drives the tester 304 to adjust the position of the slot 302.
According to the structure, when the workpiece is used, the workpiece is placed between two adjacent clamping arms 203, the workpiece is supported by the supporting plate 208, when the workpiece is placed on the supporting plate 208, the clamping arms 203 are pressed by the pressure when the workpiece is placed, so that the clamping arms 203 rotate along the axle center point of the connecting part of the clamping arms 203 and the limiting shaft 202, meanwhile, the springs 207 are stressed and compressed, the clamping arms 203 are easy to squeeze the workpiece through the elastic driving clamping arms 203 of the springs 207 and the protection plates 205, and the stability of the workpiece is ensured when the workpiece is placed;
The slide seat 102 is driven to slide on the sliding table 101 through the hydraulic rod 103, so that the reinforcing clamping frame 306 and the reinforcing pull roller 308 can approach to the fixed workpiece, the reinforcing pull roller 308 contacts with the workpiece, and the workpiece is subjected to extrusion test;
When the sliding seat 102 is displaced, the testing machine 304 and the industrial camera 305 can be driven to displace, and the screw transmission module 303 drives the testing machine 304 to adjust the position of the slot 302, so that the function of deformation resistance detection of the steel structure node is realized.
Compared with the prior art, the application discloses a digital mechanical property test system for a self-constrained steel structure space node, which is characterized in that the clamping arm 203 rotates along the axis point of the joint of the clamping arm 203 and a limiting shaft 202 by the pressure of the clamping arm 203 when the workpiece is placed, meanwhile, the spring 207 is stressed and compressed, the clamping arm 203 is easy to squeeze the workpiece by the elastic driving of the spring 207 and the protection plate 205, the stability of the workpiece when the workpiece is placed is ensured, the reinforcing clamping frame 306 and the reinforcing pull roller 308 can approach to the fixed workpiece, the reinforcing pull roller 308 is in contact with the workpiece, the workpiece is subjected to extrusion test, and the function of deformation resistance detection on the steel structure node is realized.
The foregoing is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.