CN111256931A - Steel frame shock resistance detection equipment and detection method - Google Patents
Steel frame shock resistance detection equipment and detection method Download PDFInfo
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- CN111256931A CN111256931A CN202010118593.7A CN202010118593A CN111256931A CN 111256931 A CN111256931 A CN 111256931A CN 202010118593 A CN202010118593 A CN 202010118593A CN 111256931 A CN111256931 A CN 111256931A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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Abstract
The invention relates to the technical field of steel frame anti-seismic detection, in particular to a steel frame anti-seismic detection device and a detection method, which comprises a base, a controller, a fixing mechanism, a lifting mechanism and a traction mechanism, wherein the fixing mechanism comprises a plurality of groups of positioning components, the lifting mechanism comprises a lifting plate, a driving component and two groups of lifting components, the traction mechanism comprises a sliding plate, an attachment component, a connecting component and a transmission component, and the driving component, the connecting component and the transmission component are electrically connected with the controller. And then guaranteed the accuracy of survey data, improved the practicality of this equipment.
Description
Technical Field
The invention relates to the technical field of steel frame earthquake resistance detection, in particular to steel frame earthquake resistance detection equipment and a detection method.
Background
Chinese patent application No.: CN 201510421965.2; the publication date is as follows: 2015.11.18 discloses a detachable recyclable shear wall seismic performance test loading frame and a test method. The wall steel frame device comprises a loading beam, a steel frame wall body and steel frame wall body supporting rods, wherein the inclined strut type steel frame wall body supporting rods are arranged on two sides of the steel frame wall body; the lateral movement resisting assembly comprises a fixed steel frame and a lateral movement resisting pull rod, and two ends of the lateral movement resisting pull rod are respectively hinged with the fixed steel frame and a steel frame wall body support rod in the wall body steel frame device; the shear-span ratio of the shear wall test piece can be improved, the requirement of the anti-seismic performance test on the shear-span ratio larger than 3 is met, the axial pressure can be applied to the shear wall test piece, and the requirement of the shear wall test on different axial-pressure ratios is met.
Chinese patent application No.: CN 201510161155.8; the publication date is as follows: 2015.12.16 discloses a device and a method for detecting the anti-seismic performance of a sleeve slurry anchor connecting piece, which comprises a computer, a vibration exciter, a vibration table, a sleeve, a connecting base and a mass ball, wherein a steel bar is arranged in the sleeve, the steel bar is connected with the sleeve in a grouting manner, the upper end of the sleeve is connected with the mass ball, the lower end of the sleeve is fixed on the vibration table through the connecting base, the sleeve is fixed on the connecting base through the steel bar, the computer is used for controlling the size of seismic waves and sending and receiving signals to the vibration exciter, the mass ball is round and solid, has uniform quality, and cannot generate eccentric damage during vibration, and the vibration frequency provided by the vibration table is 50Hz at most.
The above two inventive structures have the following disadvantages:
1. the concrete drive structure who is used for applying the detection with loading force to the steelframe that is designed not, the loading force value is unstable, therefore can cause the deviation to the steelframe antidetonation data of surveying, and the data that detect is accurate enough can direct influence detection effect, and the practicality remains to be promoted.
2. The mode of the measured steel frame is single, and the adhesive force between the connecting part and the measured steel frame cannot be adjusted, so that the corresponding damage degree of the steel frame to different earthquake intensities in practical application cannot be simulated, and the earthquake resistance of the steel frame in practical application cannot be accurately detected.
3. In the detection work, the process of loading is only one-way process when each loading process is finished, the condition of inaccurate test caused by sudden application of a large load value cannot be avoided, and meanwhile, the service life of the transmission assembly is not prolonged.
According to the deficiencies of the prior art, it is necessary to design a steel frame anti-seismic property detection device and a detection method, which have stable lifting function and transmission function and can adjust the adhesive force between the connecting part and the steel frame to detect the actual anti-seismic effect of the steel frame.
Disclosure of Invention
The invention aims to provide a steel frame shock resistance detection device and a detection method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a steelframe shock resistance check out test set, including the base, still include controller, fixed establishment, elevating system and drive mechanism, the fixed top of establishing at the base of controller, fixed establishment establishes at the top of base in order to fix the steelframe when detecting the shock resistance, and fixed establishment includes a plurality of locating component of group, and a plurality of locating component of group are the symmetry setting, elevating system establishes at the top of base in order to be used for supporting the drive mechanism lift, and elevating system includes lifter plate, drive assembly and two sets of jacking subassemblies, drive assembly establishes at the top of base, and two sets of jacking subassemblies are the symmetry and establish in drive assembly's both sides to all be connected with the drive assembly transmission through the rotation axis, the lifter plate is established at the top of two sets of jacking subassemblies, drive mechanism establishes at the top of elevating system in order to detect the shock resistance performance of steelframe, and drive mechanism, Attached component, coupling assembling and drive assembly, the fixed top of establishing at the lifter plate of drive assembly, the fixed support frame that is equipped with in top of lifter plate, the slide establish on the support frame and with drive assembly sliding connection, coupling assembling establishes on the slide, attached component establishes the one end of keeping away from the slide at coupling assembling, drive assembly, coupling assembling and drive assembly are electric connection with the controller.
Further, drive assembly includes servo motor, first connecting rod, second connecting rod, connecting rod and bottom plate, servo motor passes through the fixed top of establishing at the lifter plate of frame, first connecting rod is fixed to be established on servo motor's output, the articulated one end that sets up servo motor at first connecting rod is kept away from, the one end of keeping away from first connecting rod at the second connecting rod is established in the connecting rod is articulated to the both ends of connecting rod are the symmetry and are provided with two first gears, and two first gears all rotate with the connecting rod and are connected, the bottom plate is fixed to be established at the top of lifter plate and lie in the slide under, the first rack of fixedly connected with on the bottom plate, the bottom fixedly connected with second rack of slide, first rack, second rack all link with two first gear engagement, servo motor is connected with the controller electricity.
Further, the attachment component includes connecting plate and four fixed bolts, it is the first jack of symmetry a plurality of to be provided with on the steelframe, the impartial interval of all first jacks is arranged, four fixed bolts are vertical to be inserted and establish the inside at four first jacks, the connecting plate cover is established in the bottom of four fixed bolts, the connecting plate is cross structure to be the symmetry on the connecting plate and be provided with the first spliced eye of a plurality of, the impartial interval of all first spliced eyes is arranged, and every first jack all is unanimous with the axis direction of a first spliced eye, the top of connecting plate is the symmetry and is provided with four montants, equal vertical through-hole that is equipped with on every montant, every first bolt all passes and is inserted with a first spliced eye from a first jack and a through-hole and establish the connection.
Further, the fixed cylindricality montant that is equipped with of one end that the connecting plate is close to the slide, equidistant a plurality of balls of being provided with on the outer wall of cylindricality montant are buckled, and every ball is buckled and is made by the rubber material, coupling assembling includes loop bar and arm-tie, the one end that the arm-tie is close to the connecting plate at the slide is fixed to be established through the connecting rod that two symmetries set up, the loop bar is inserted and is established at the center of arm-tie, and the one end installation force sensor of connecting plate is kept away from to the loop bar, and force sensor's side fixedly connected with anticreep cap to the loop bar is kept away from force sensor's other end fixedly connected with ferrule, the ferrule is established with cylindricality montant cover and is connected to equidistant a plurality of locking.
Furthermore, the driving assembly comprises a long shaft cylinder, a third rack and a second gear, the long shaft cylinder is fixedly arranged at the top of the base, the third rack is fixedly arranged at the output of the long shaft cylinder, a sliding groove for the third rack to stretch out and draw back is fixedly arranged at the top of the base, the second gear is sleeved on the outer wall of the middle part of the rotating shaft, the second gear is meshed with the third rack and connected with the two supporting plates, two supporting plates are sleeved at the two ends of the rotating shaft, each supporting plate is provided with a mounting hole in a forming mode, a bearing is arranged inside each mounting hole, the outer ring of each bearing is fixedly connected with the inner wall of each mounting hole, the inner ring of each bearing is fixedly connected with the outer wall of the rotating shaft, and the long shaft cylinder is electrically connected with.
Further, every group the jacking subassembly all includes swing arm and ejector pin, the swing arm is fixed to be set up on the outer wall of rotation axis, the articulated one end that keeps away from the backup pad at the swing arm that sets up of ejector pin, the bottom of lifter plate is the symmetry and is provided with two connecting blocks to the top of every connecting block all with the bottom fixed connection of lifter plate, every connecting block all with the ejector pin keep away from the swing arm one end articulated, the top of base is the symmetry and is provided with four guide bars, every guide bar all inserts with the lifter plate and establishes the connection, and the equal fixedly connected with anticreep cover in top of every guide bar.
Furthermore, each group of positioning components comprises a first tight fitting sleeve and a second tight fitting sleeve which are symmetrically arranged, the first tightening sleeve and the second tightening sleeve are both in U-shaped structures, a second jack is arranged on the outer wall of the first tightening sleeve, a positioning bolt is horizontally inserted in the second jack, a second inserting hole is arranged on the inner wall of the second tightening sleeve, one end of the second bolt passes through the first tightening sleeve, the other end of the base is inserted into the second inserting hole to be connected with the second inserting hole, the first tightening sleeve and the second tightening sleeve are symmetrically arranged on the side wall of the first tightening sleeve and the second tightening sleeve, each grounding block is provided with a through hole, a limiting pin is inserted into each through hole in the same side wall of the first tightening sleeve and the second tightening sleeve, the top of the base is provided with a pin hole for fixing the limiting pin, and each limiting pin penetrates through the two through holes and is inserted into the two pin holes.
Further, servo motor's the vertical bracing piece that is provided with of top one end is kept away from to the lifter plate, the top level of bracing piece is provided with the mounting panel, the fixed scale that is provided with on the mounting panel, the one end that the arm-tie is close to the scale is fixed establishes the horizontal pole, the fixed toper indicator that is provided with of one end that the arm-tie was kept away from to the horizontal pole, the directional scale of toper indicator.
A steel frame shock resistance detection device and a detection method comprise the following steps:
s1: setting the termination conditions of the applied load, wherein the termination conditions are divided into the following three types:
s10: the set number of times is reached, and in the invention, the set number of times does not exceed 55 times;
s11: the set load value is reached, the balance standard of the load value can be a force value, a speed value or a combination of the force value and the speed value, specifically, when the load is applied, the force can be applied according to the force, namely the force per second, and the speed can be applied according to the displacement of stretching or compression per minute, and in the invention, the force value does not exceed 50000N;
s12: the displacement that the steelframe that awaits measuring takes place surpasss the setting value, means the steelframe at this moment and has already exceeded the bearing limit, promptly has been destroyed.
The termination conditions in steps S10 and S11 may exist individually or be combined together as the basis for judgment.
S2: applying an alternating load to the steel frame, specifically in the following stages:
s20: applying a load in a certain direction to the steel frame, gradually loading the load until the load reaches a constant value which is 2000N, and then gradually returning to zero, wherein the speed of returning to zero is equal to the speed of loading, and the time of the whole loading sub-process is 0.25S;
s21, applying acting forces with the same magnitude and opposite directions on the same acting point of the steel frame, wherein the loading process, the loading method and the acting time are the same as those in the step S10;
s22: steps S20 and S21 are each completed once, referred to as a cycle, and the cycle is repeated until a set number of cycles is reached, the set number being 15, which is the first stage of load loading;
s23: after the 15 th pass, the second phase of load loading is entered. And each time the cycle is completed, correspondingly increasing the load value on the basis of the previous time, wherein the increasing mode is multiplication, namely the load value of the next time is multiple times of the load value of the previous time, and the multiplication value is 1.0351.
By adopting the two-section type loading process, a buffering process can be given to the steel frame to be tested and the transmission assembly, so that the inaccuracy in testing caused by sudden application of a large load value is avoided, and the service life of the transmission assembly is prolonged.
S30: and when the load application is stopped when the termination condition is reached, recording the whole displacement of the steel frame, and printing and outputting the result. Meanwhile, the information of the tested piece and the related test parameters are stored in a system of the controller, so that the same type of steel frame can be conveniently and quickly tested later.
The invention has the beneficial effects that:
1. according to the invention, through designing a specific traction mechanism, which comprises a sliding plate, an attachment component, a connecting component and a transmission component, and through mutual cooperation of the sliding plate, the attachment component, the connecting component and the transmission component, deviation of the measured steel frame anti-seismic data can not be caused, so that the accuracy of the measured data is ensured, the practicability of the equipment is improved, and the height of the traction mechanism is adjusted in real time through the lifting mechanism, so that the connecting component and the transmission component which are used for connecting the steel frame to be measured are always positioned on the same horizontal plane, therefore, no additional moment is generated, the variable is reduced, the test process is simpler, and the result is more accurate.
2. According to the invention, through designing the attachment assembly, the first jacks and the first inserting holes which are arranged at equal intervals and correspond to each other one by one are arranged on the steel frame and the connecting plate, so that the adhesive force between the connecting plate and the steel frame can be changed by adjusting the positions of the four fixing bolts together, and the corresponding damage degree of the steel frame to different earthquake intensities in practical application can be simulated by changing the adhesive force value, thereby conveniently detecting the earthquake resistance of the steel frame in practical application.
3. According to the invention, by designing the sliding plate, the pulling plate and the graduated scale to be matched with the transmission assembly, when the sliding plate slides, the sliding distance of the pulling plate can be obtained in real time according to the sliding distance of the sliding plate, and the sliding distance of the pulling plate is matched with the force sensor, so that the size relation between the sliding distance of the pulling plate and a pulling force value can be obtained, the size relation between the horizontal shaking distance of the steel tapping frame generated due to earthquake and the force value generated due to shaking in practical application can be further simulated, and the detection efficiency is further improved.
4. The detection method provided by the invention adopts a two-section type loading process when the loading force is applied to the steel frame, and can provide a buffering process for the steel frame to be detected and the transmission assembly, thereby not only avoiding inaccurate test caused by suddenly applying a large load value, but also prolonging the service life of the transmission assembly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments of the present invention are briefly described below.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an exploded perspective view of the positioning assembly of the present invention;
FIG. 3 is an exploded perspective view of the attachment assembly of the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 3;
FIG. 5 is a first perspective view of the coupling assembly and the transmission assembly of the present invention;
FIG. 6 is a schematic perspective view of the connecting assembly and the transmission assembly of the present invention;
FIG. 7 is an enlarged view of FIG. 6 at B;
FIG. 8 is a schematic perspective view of the lifting mechanism of the present invention;
FIG. 9 is an enlarged view at C of FIG. 8;
in the figure: the base 1, the controller 2, the fixing mechanism 3, the positioning assembly 30, the first clamping sleeve 300, the second clamping sleeve 301, the positioning bolt 302, the grounding block 303, the limiting pin 304, the lifting mechanism 4, the lifting plate 40, the support frame 400, the scale 401, the cross bar 402, the conical indicator 403, the driving assembly 41, the long-axis cylinder 410, the third rack 411, the second gear 412, the jacking assembly 42, the rotary rod 420, the push rod 421, the traction mechanism 5, the sliding plate 50, the second rack 500, the attachment assembly 51, the connecting plate 510, the fixing bolt 511, the vertical rod 512, the cylindrical vertical rod 513, the ball buckle 514, the connecting assembly 52, the loop bar 520, the pull plate 521, the force sensor 522, the pipe clamp 523, the transmission assembly 53, the servo motor 530, the first link 531, the second link 532, the connecting rod 533, the bottom plate 534, the first gear 535, the first rack 536, the rotating shaft 6, and the supporting plate 60.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.
Referring to fig. 1 to 9, the steel frame shock resistance detection device comprises a base 1, a controller 2, a fixing mechanism 3, a lifting mechanism 4 and a traction mechanism 5, wherein the controller 2 is fixedly arranged at the top of the base 1, the fixing mechanism 3 is arranged at the top of the base 1 to fix a steel frame during shock resistance detection, the fixing mechanism 3 comprises a plurality of sets of positioning assemblies 30, the plurality of sets of positioning assemblies 30 are symmetrically arranged, the lifting mechanism 4 is arranged at the top of the base 1 to support the traction mechanism 5 to lift, the lifting mechanism 4 comprises a lifting plate 40, a driving assembly 41 and two sets of lifting assemblies 42, the driving assembly 41 is arranged at the top of the base 1, the two sets of lifting assemblies 42 are symmetrically arranged at two sides of the driving assembly 41 and are in transmission connection with the driving assembly 41 through a rotating shaft 6, the lifting plate 40 is arranged at the top of the two sets of lifting assemblies 42, traction mechanism 5 establishes at elevating system 4's top in order to be used for detecting the anti-seismic performance of steelframe, and traction mechanism 5 includes slide 50, adheres to subassembly 51, coupling assembling 52 and drive assembly 53, drive assembly 53 is fixed to be established at the top of lifter plate 40, and the fixed support frame 400 that is equipped with in top of lifter plate 40, slide 50 slide establish on support frame 400 and with drive assembly 53 sliding connection, coupling assembling 52 establishes on slide 50, adhere to subassembly 51 and establish the one end of keeping away from slide 50 at coupling assembling 52, drive assembly 41, coupling assembling 52 and drive assembly 53 are electric connection with controller 2.
The transmission assembly 53 comprises a servo motor 530, a first connecting rod 531, a second connecting rod 532, a connecting rod 533 and a bottom plate 534, the servo motor 530 is fixedly arranged at the top of the lifting plate 40 through the base, the first connecting rod 531 is fixedly arranged at the output end of the servo motor 530, the second connecting rod 532 is hinged at one end of the first connecting rod 531 far away from the servo motor 530, the connecting rod 533 is hinged at one end of the second connecting rod 532 far away from the first connecting rod 531, two ends of the connecting rod 533 are symmetrically provided with two first gears 535, the two first gears 535 are both rotatably connected with the connecting rod 533, the bottom plate 534 is fixedly arranged at the top of the lifting plate 40 and is positioned right below the sliding plate 50, the bottom plate 534 is fixedly connected with a first rack 536, the bottom of the sliding plate 50 is fixedly connected with a second rack 500, the first rack 536 and the second rack 500 are both meshed and linked with the two first gears 535, the servo motor 530 is electrically connected with the controller 2, when all preparation work is finished, the anti-vibration detection of the steel frame is started, firstly, the servo motor 530 is started through the controller 2, so that the first connecting rod 531 on the output of the servo motor is driven to rotate, the second connecting rod 532 is driven to rotate because one end of the first connecting rod 531, far away from the servo motor 530, is hinged with the second connecting rod 532, the end of the second connecting rod 532, far away from the first connecting rod 531, is hinged with the connecting rod 533, the two ends of the connecting rod 533 are rotatably connected with the two first gears 535, the first rack 536 and the second rack 500 are both meshed with the two first gears 535, in addition, the sliding plate 50 is connected with the support frame 400 in a sliding manner, and the bottom plate 534 is fixedly connected with the lifting plate 40, so that the sliding.
The attachment component 51 comprises a connecting plate 510 and four fixing bolts 511, the steel frame is symmetrically provided with a plurality of first jacks, all the first jacks are arranged at equal intervals, the four fixing bolts 511 are vertically inserted into the four first jacks, the connecting plate 510 is sleeved at the bottoms of the four fixing bolts 511, the connecting plate 510 is of a cross structure, the connecting plate 510 is symmetrically provided with a plurality of first jacks, all the first jacks are arranged at equal intervals, each first jack is consistent with the axial direction of one first jack, the top of the connecting plate 510 is symmetrically provided with four vertical rods 512, each vertical rod 512 is vertically provided with a through hole, each first bolt penetrates through one first jack and one through hole and is inserted and connected with one first jack, the attachment component 51 is used for attaching to the bottom of the steel frame and is connected with the transmission component 53 through the connecting component 52, so that the transmission component 53 can detect the anti-seismic performance of the steel frame, when the steel frame is connected with the attachment component 51, firstly, a plurality of first jacks are symmetrically drilled at the top of the steel frame by a drill bit by a detector, all the first jacks must be arranged at equal intervals, then a worker inserts the four fixing bolts 511 along the four first jacks and penetrates through the through holes on the four vertical rods 512 until the bottoms of the four fixing bolts 511 are inserted into the four first inserting holes on the connecting plate 510, namely, the connecting plate 510 is attached to the steel frame, because the steel frame and the connecting plate 510 are both provided with the first jacks and the first inserting holes which are arranged at equal intervals and correspond to one another, the adhesive force between the connecting plate 510 and the steel frame can be changed by adjusting the positions of the four fixing bolts 511 together, so that the damage degree of the steel frame to different seismic strengths in practical application can be simulated by the way of changing the adhesive force value, and then the earthquake resistance of the steel tapping frame in practical application can be conveniently detected.
The connecting plate 510 is fixedly provided with a cylindrical vertical rod 513 at one end close to the sliding plate 50, a plurality of ball buckles 514 are arranged on the outer wall of the cylindrical vertical rod 513 at equal intervals, each ball buckle 514 is made of rubber material, the connecting assembly 52 comprises a sleeve rod 520 and a pull plate 521, the pull plate 521 is fixedly arranged at one end of the sliding plate 50 close to the connecting plate 510 through two connecting rods 533 which are symmetrically arranged, the sleeve rod 520 is inserted in the center of the pull plate 521, one end of the sleeve rod 520 far away from the connecting plate 510 is provided with a force sensor 522, the side of the force sensor 522 is fixedly connected with an anti-falling cap, the other end of the sleeve rod 520 far away from the force sensor 522 is fixedly connected with a pipe hoop 523, the pipe hoop 523 is connected with the cylindrical vertical rod 513 in a sleeved mode, a plurality of locking holes are arranged at equal intervals on the inner wall of the pipe hoop 523, each ball buckle 514, firstly, the pipe hoop 523 is sleeved on the cylindrical vertical rod 513, each ball buckle 514 is clamped with a locking hole at the moment, the pipe hoop 523 is fixedly connected with the sleeve rod 520, the sleeve rod 520 is inserted into the pull plate 521 to be connected, and the pull plate 521 is fixedly connected with the sliding plate 50 through the two connecting rods 533, so that when the pipe hoop 523 is sleeved with the cylindrical vertical rod 513, the connecting plate 510 and the sliding plate 50 can be connected into a whole, the detection work is started, the design of the force sensor 522 is convenient when the pull plate 521 slides, the tension value of the pull plate 521 is detected in real time, and the force sensor 522 is consistent with the measured height plane of the steel frame, so that the error can be effectively reduced, and the measured data are more accurate.
The driving assembly 41 comprises a long shaft cylinder 410, a third rack 411 and a second gear 412, the long shaft cylinder 410 is fixedly arranged at the top of the base 1, the third rack 411 is fixedly arranged at the output of the long shaft cylinder 410, a sliding chute for the third rack 411 to stretch is fixedly arranged at the top of the base 1, the second gear 412 is sleeved on the outer wall of the middle part of the rotating shaft 6, the second gear 412 is meshed with the third rack 411, two supporting plates 60 are sleeved at two ends of the rotating shaft 6, a mounting hole is uniformly formed in each supporting plate 60 in a one-piece manner, a bearing is arranged inside each mounting hole, the outer ring of each bearing is fixedly connected with the inner wall of the mounting hole, the inner ring of each bearing is fixedly connected with the outer wall of the rotating shaft 6, the long shaft cylinder 410 is electrically connected with the controller 2, when the driving assembly 41 is started, the long shaft cylinder 410 is started through the controller 2, thereby driving the third rack 411 at the output end to extend out to the end far away from the long axis cylinder 410 in the chute, and driving the rotation shaft 6 to rotate due to the meshed connection of the second gear 412 and the third rack 411.
Each group of jacking assemblies 42 comprises a rotating rod 420 and an ejector rod 421, the rotating rod 420 is fixedly arranged on the outer wall of the rotating shaft 6, the ejector rod 421 is hinged to one end of the rotating rod 420 far away from the support plate 60, the bottom of the lifting plate 40 is symmetrically provided with two connecting blocks, the top of each connecting block is fixedly connected with the bottom of the lifting plate 40, each connecting block is hinged to one end of the ejector rod 421 far away from the rotating rod 420, the top of the base 1 is symmetrically provided with four guide rods, each guide rod is inserted and connected with the lifting plate 40, and the top of each guide rod is fixedly connected with an anti-falling sleeve, because the heights of steel frames are different, the height of the traction mechanism 5 needs to be adjusted to ensure that the connecting assembly 52 and the transmission assembly 53 which are used for connecting the steel frames are measured to be located on the same horizontal plane, so as to avoid generating extra additional moment and reduce the variation, the testing process is more concise, the result is more accurate, when the height of the traction mechanism 5 is adjusted, since the traction mechanism 5 is located on the top of the lifting plate 40, and therefore the height of the lifting plate 40 needs to be adjusted, the driving assembly 41 is first activated, so that the rotating shaft 6 is rotated by the driving assembly 41, because the rotary rod 420 is fixedly connected with the outer wall of the rotating shaft 6, the top rod 421 is hinged with one end of the rotary rod 420 far away from the supporting plate 60, and because the bottom of the lifting plate 40 is fixedly connected with the connecting block which is hinged with one end of the top rod 421 far away from the rotary rod 420, and in addition, both ends of the rotating shaft 6 are connected with all the supporting plates 60 through bearings, each rotary rod 420 is fixedly connected with the outer wall of the rotating shaft 6, so that by the rotation of the two rotary rods 420, and then drives the two push rods 421 to push up to drive the lifting plate 40 to ascend until the height of the connecting assembly 52 is consistent with that of the transmission assembly 53.
Each group of the positioning assemblies 30 comprises a first fastening sleeve 300 and a second fastening sleeve 301, the first fastening sleeve 300 and the second fastening sleeve 301 are symmetrically arranged, the first fastening sleeve 300 and the second fastening sleeve 301 are both in a U-shaped structure, a second jack is arranged on the outer wall of the first fastening sleeve 300, a positioning bolt 302 is horizontally inserted in the second jack, a second inserting hole is arranged on the inner wall of the second fastening sleeve 301, one end of the second bolt penetrates through the first fastening sleeve 300, the other end of the second bolt is inserted in and connected with the second inserting hole, two grounding blocks 303 are symmetrically arranged on the side walls of the first fastening sleeve 300 and the second fastening sleeve 301, each grounding block 303 is provided with a through hole, a limiting pin 304 is inserted in each through hole on the same side wall of the first fastening sleeve 300 and the second fastening sleeve 301, a pin hole for fixing the limiting pin 304 is arranged on the top of the base 1, each limiting pin 304 penetrates through two through holes and is inserted into the two pin holes, when the connecting plate 510 is connected with the sliding plate 50 into a whole, the supporting leg of the steel frame is fixed, firstly, a drill bit is used for drilling a hole at the bottom of each supporting leg of the steel frame by a tester, then the first fastening sleeve 300 and the second fastening sleeve 301 are symmetrically arranged along the outer wall of the supporting leg, then, the fastening is carried out until the opposite outer walls of the first fastening sleeve and the second fastening sleeve are in a joint state, then, the positioning bolt 302 is inserted into the second inserting hole on the supporting leg of the steel frame along the second inserting hole on the first fastening sleeve 300 and penetrates through the drilled hole on the supporting leg of the steel frame until the other end of the second bolt is inserted into the second inserting hole on the inner wall of the second fastening sleeve 301, then, the two limiting pins 304 are respectively inserted into the through holes on the two connecting blocks on the same side wall of the first fastening sleeve 300 and the, and then, fixing the rest supporting legs of the steel frame with the bottom of the base 1 in sequence according to the steps, so that the fixing effect of the steel frame is achieved, the fixing effect of the steel frame in practical application is simulated as much as possible, and the anti-seismic data and the anti-seismic performance of the steel frame in practical application are accurately detected.
A support rod is vertically arranged at one end of the top of the lifting plate 40, which is far away from the servo motor 530, a mounting plate is horizontally arranged at the top of the support rod, a graduated scale 401 is fixedly arranged on the mounting plate, a cross rod 402 is fixedly arranged at one end of the pulling plate 521, which is close to the graduated scale 401, a conical indicator 403 is fixedly arranged at one end of the cross rod 402, which is far away from the pulling plate 521, the conical indicator 403 points to the graduated scale 401, when the pulling plate 521 slides, because the sliding plate 50 is fixedly connected with the pulling plate 521, the cross rod 402 is fixedly connected with the pulling plate 521, and the cross rod 402 is fixedly connected with the conical indicator 403, and because the conical indicator 403 is consistent with the pulling plate 521 in position, the conical indicator points to the graduated scale 401, when the sliding plate 50 slides, the sliding distance of the pulling plate 521 can be obtained in real time according to the sliding distance of the sliding plate 50, and the sliding distance of, and then the relation between the horizontal shaking distance of the steel frame generated due to earthquake in practical application and the force value generated due to shaking is simulated, and meanwhile, if the displacement distance of the conical indicating head 403 exceeds a set value, the steel frame is beyond the bearing limit, namely is destroyed, so that the earthquake-resistant data of the steel frame and the earthquake-resistant performance of the steel frame in practical application can be further conveniently and accurately obtained.
A steel frame shock resistance detection device and a detection method comprise the following steps:
s1: setting the termination conditions of the applied load, wherein the termination conditions are divided into the following three types:
s10: the set number of times is reached, and in the invention, the set number of times does not exceed 55 times;
s11: the set load value is reached, the balance standard of the load value can be a force value, a speed value or a combination of the force value and the speed value, specifically, when the load is applied, the force can be applied according to the force, namely the force per second, and the speed can be applied according to the displacement of stretching or compression per minute, and in the invention, the force value does not exceed 50000N;
s12: the displacement that the steelframe that awaits measuring takes place surpasss the setting value, means the steelframe at this moment and has already exceeded the bearing limit, promptly has been destroyed.
The termination conditions in steps S10 and S11 may exist individually or be combined together as the basis for judgment.
S2: applying an alternating load to the steel frame, specifically in the following stages:
s20: applying a load in a certain direction to the steel frame, gradually loading the load until the load reaches a constant value which is 2000N, and then gradually returning to zero, wherein the speed of returning to zero is equal to the speed of loading, and the time of the whole loading sub-process is 0.25S;
s21, applying acting forces with the same magnitude and opposite directions on the same acting point of the steel frame, wherein the loading process, the loading method and the acting time are the same as those in the step S10;
s22: steps S20 and S21 are each completed once, referred to as a cycle, and the cycle is repeated until a set number of cycles is reached, the set number being 15, which is the first stage of load loading;
s23: after the 15 th pass, the second phase of load loading is entered. And each time the cycle is completed, correspondingly increasing the load value on the basis of the previous time, wherein the increasing mode is multiplication, namely the load value of the next time is multiple times of the load value of the previous time, and the multiplication value is 1.0351.
By adopting the two-section type loading process, a buffering process can be provided for the steel frame to be tested and the transmission assembly 53, so that the inaccurate test caused by suddenly applying a large load value is avoided, and the service life of the transmission assembly 53 is prolonged.
S3: and when the load application is stopped when the termination condition is reached, recording the whole displacement of the steel frame, and printing and outputting the result. Meanwhile, the information of the tested piece and the related test parameters are stored in a system of the controller 2, so that the same type of steel frame can be conveniently and quickly tested later.
The working principle of the invention is as follows: the attachment component 51 is used for attaching to the bottom of a steel frame and is connected with the transmission component 53 through the connection component 52, so that the transmission component 53 can detect the anti-seismic performance of the steel frame, when the steel frame is connected with the attachment component 51, firstly, a plurality of first jacks are symmetrically drilled at the top of the steel frame through a drill bit by a detector, all the first jacks must be arranged at equal intervals, then, a worker inserts the four fixing bolts 511 along the four first jacks and penetrates through holes on the four vertical rods 512 until the bottoms of the four fixing bolts 511 are inserted into the four first insertion holes on the connection plate 510, namely, the connection plate 510 is attached to the steel frame, as the steel frame and the connection plate 510 are respectively provided with the first jacks and the first insertion holes which are arranged at equal intervals and correspond to each other, the position of the four fixing bolts 511 can be adjusted together, so that the adhesive force between the connection plate 510 and the steel frame can, therefore, by means of the mode of changing the magnitude of the adhesion value, the corresponding damage degree of the steel tapping frame to different earthquake intensities in practical application can be simulated, and the earthquake resistance of the steel tapping frame in practical application can be conveniently detected.
When the connecting plate 510 is connected with the slide plate 50 as a whole, that is, the supporting legs of the steel frame are fixed, firstly, a hole is drilled at the bottom of each supporting leg of the steel frame by a drill bit through a tester, then the first fastening sleeve 300 and the second fastening sleeve 301 are symmetrically arranged along the outer wall of the supporting leg, then fastened until the opposite outer walls of the first fastening sleeve 300 and the second fastening sleeve are in a joint state, then the positioning bolt 302 is inserted into the second inserting hole on the supporting leg of the steel frame along the second inserting hole on the first fastening sleeve 300 and penetrates through the drilled hole on the supporting leg of the steel frame until the other end of the second bolt is inserted into the second inserting hole on the inner wall of the second fastening sleeve 301, then the two limiting pins 304 are respectively inserted into the through holes on the two connecting blocks on the same side wall of the first fastening sleeve 300 and the second fastening sleeve 301 until the other end of the limiting pin 304 is inserted into the pin hole on the top of the base, therefore, the fixing effect of the steel frame is achieved, the fixing effect of the steel frame in practical application is simulated as much as possible, and the anti-seismic data and the anti-seismic performance of the steel frame in practical application are accurately detected.
After the connecting plate 510 is connected with the steel frame, the pipe hoop 523 is sleeved on the cylindrical vertical rod 513, each ball buckle 514 is clamped with one locking hole, the pipe hoop 523 is fixedly connected with the sleeve rod 520, the sleeve rod 520 is connected with the pull plate 521 in an inserting mode, and the pull plate 521 is fixedly connected with the sliding plate 50 through the two connecting rods 533, so that when the pipe hoop 523 is sleeved with the cylindrical vertical rod 513, the connecting plate 510 and the sliding plate 50 can be connected into a whole, detection work starts, the force sensor 522 is convenient to design, when the pull plate 521 slides, the pulling force value of the pull plate 521 is detected in real time, the force sensor 522 is consistent with the measured height plane of the steel frame, errors can be effectively reduced, and measured data are more accurate.
When all the preparation work is finished, the anti-vibration detection of the steel frame is started, firstly, the servo motor 530 is started through the controller 2, so as to drive the first connecting rod 531 output by the servo motor to rotate, because one end of the first connecting rod 531, which is far away from the servo motor 530, is hinged with the second connecting rod 532, so as to drive the second connecting rod 532 to rotate, because one end of the second connecting rod 532, which is far away from the first connecting rod 531, is hinged with the connecting rod 533, because two ends of the connecting rod 533 are rotatably connected with the two first gears 535, the first rack 536 and the second rack 500 are both meshed with the two first gears 535, in addition, the sliding plate 50 is in sliding connection with the supporting frame 400, the bottom plate 534 is fixedly connected with the lifting plate 40, so as to drive the sliding plate 50 to slide, because the sliding plate 521 is fixedly connected with the sliding plate 50, when the sliding plate 521 is in sliding, because the sliding plate 50 is, the cross rod 402 is fixedly connected with the pulling plate 521, the cross rod 402 is fixedly connected with the conical indicating head 403, the conical indicating head 403 is consistent with the pulling plate 521 in position, and the conical indicating head 403 points to the graduated scale 401, so that when the sliding plate 50 slides, the sliding distance of the pulling plate 521 can be obtained in real time according to the sliding distance of the sliding plate 50, and the sliding distance and the pulling force value of the pulling plate 521 can be obtained by matching with the force sensor 522, and further, the relationship between the horizontal shaking distance and the force value generated by shaking of the steel tapping frame in practical application can be simulated, meanwhile, if the displacement distance of the conical indicating head 403 exceeds a set value, the steel tapping frame means that the steel tapping frame exceeds a bearing limit, namely the steel tapping frame is damaged, and the anti-seismic data of the steel frame and the anti-seismic performance of the steel frame in practical application.
Because of the difference of the heights of the steel frames, the height of the traction mechanism 5 needs to be adjusted to ensure that the connecting component 52 and the transmission component 53 which are used for connecting the steel frames to be measured are positioned on the same horizontal plane, thereby generating no additional moment, reducing the variable, leading the test process to be simpler and more accurate, when the height of the traction mechanism 5 is adjusted, because the traction mechanism 5 is positioned at the top of the lifting plate 40, the position height of the lifting plate 40 needs to be adjusted, firstly, the long shaft cylinder 410 is started through the controller 2, thereby driving the third rack 411 on the output end of the long shaft cylinder to extend out from the inside of the chute to the end far away from the long shaft cylinder 410, because the second gear 412 is meshed and connected with the third rack 411, the rotating shaft 6 is driven to rotate, because the rotating rod 420 is fixedly connected with the outer wall of the rotating shaft 6, the top rod 421 is hinged with the end, because the bottom of the lifting plate 40 is fixedly connected with the connecting block, the connecting block is hinged with one end of the top rod 421 far away from the rotary rods 420, in addition, two ends of the rotary shaft 6 are connected with all the supporting plates 60 through bearings, and each rotary rod 420 is fixedly connected with the outer wall of the rotary shaft 6, so that the two rotary rods 420 rotate to drive the two top rods 421 to lift up to drive the lifting plate 40 until the height of the connecting component 52 is consistent with that of the transmission component 53.
Claims (8)
1. A steel frame shock resistance detection device comprises a base (1) and is characterized by further comprising a controller (2), a fixing mechanism (3), a lifting mechanism (4) and a traction mechanism (5), wherein the controller (2) is fixedly arranged at the top of the base (1), the fixing mechanism (3) is arranged at the top of the base (1) to fix a steel frame when the shock resistance is detected, the fixing mechanism (3) comprises a plurality of groups of positioning assemblies (30), the plurality of groups of positioning assemblies (30) are symmetrically arranged, the lifting mechanism (4) is arranged at the top of the base (1) to support the traction mechanism (5) to lift, the lifting mechanism (4) comprises a lifting plate (40), a driving assembly (41) and two groups of jacking assemblies (42), the driving assembly (41) is arranged at the top of the base (1), the two groups of jacking assemblies (42) are symmetrically arranged at two sides of the driving assembly (41), and are in transmission connection with a driving component (41) through a rotating shaft (6), the lifting plate (40) is arranged at the top of the two groups of jacking components (42), the traction mechanism (5) is arranged at the top of the lifting mechanism (4) and used for detecting the anti-seismic performance of the steel frame, the traction mechanism (5) comprises a sliding plate (50), an attachment assembly (51), a connecting assembly (52) and a transmission assembly (53), the transmission component (53) is fixedly arranged at the top of the lifting plate (40), the top of the lifting plate (40) is fixedly provided with a support frame (400), the sliding plate (50) is arranged on the supporting frame (400) in a sliding way and is connected with the transmission component (53) in a sliding way, the connecting component (52) is arranged on the sliding plate (50), the attaching component (51) is arranged at one end of the connecting component (52) far away from the sliding plate (50), the driving assembly (41), the connecting assembly (52) and the transmission assembly (53) are electrically connected with the controller (2);
the transmission assembly (53) comprises a servo motor (530), a first connecting rod (531), a second connecting rod (532), a connecting rod (533) and a bottom plate (534), the servo motor (530) is fixedly arranged at the top of the lifting plate (40) through the base, the first connecting rod (531) is fixedly arranged at the output end of the servo motor (530), the second connecting rod (532) is hinged to one end, far away from the servo motor (530), of the first connecting rod (531), the connecting rod (533) is hinged to one end, far away from the first connecting rod (531), of the second connecting rod (532), two first gears (535) are symmetrically arranged at two ends of the connecting rod (533), the two first gears (535) are rotatably connected with the connecting rod (533), the bottom plate (534) is fixedly arranged at the top of the lifting plate (40) and located right below the sliding plate (50), a first rack (536) is fixedly connected to the bottom plate (534), the bottom fixedly connected with second rack (500) of slide (50), first rack (536), second rack (500) all link with two first gear (535) meshing, servo motor (530) are connected with controller (2) electricity.
2. The attachment assembly (51) comprises a connection plate (510) and four fixing bolts (511), a plurality of first jacks are symmetrically arranged on the steel frame, all the first jacks are arranged at equal intervals, four fixing bolts (511) are vertically inserted into the four first jacks, the connecting plate (510) is sleeved at the bottoms of the four fixing bolts (511), the connecting plate (510) is of a cross structure, and a plurality of first inserting holes are symmetrically arranged on the connecting plate (510), all the first inserting holes are arranged at equal intervals, and every first jack all is unanimous with the axis direction of a first spliced eye, and the top of connecting plate (510) is the symmetry and is provided with four montants (512), all vertically is equipped with the through-hole on every montant (512), and every first bolt all passes and inserts with a first spliced eye from a first jack and a through-hole and establish the connection.
3. The steel frame earthquake resistance detection device according to claim 1, characterized in that: the connecting plate (510) is fixedly provided with a cylindrical vertical rod (513) at one end close to the sliding plate (50), the outer wall of the cylindrical vertical rod (513) is provided with a plurality of ball buckles (514) at equal intervals, each ball buckle (514) is made of rubber materials, the connecting assembly (52) comprises a loop bar (520) and a pull plate (521), the pull plate (521) is fixedly arranged at one end of the sliding plate (50) close to the connecting plate (510) through two symmetrically arranged connecting rods (533), the loop bar (520) is inserted in the center of the pull plate (521), one end of the loop bar (520) far away from the connecting plate (510) is provided with a force sensor (522), the side of the force sensor (522) is fixedly connected with an anti-falling cap, the other end of the loop bar (520) far away from the force sensor (522) is fixedly connected with a pipe hoop (523), the pipe hoop (523) is connected with the cylindrical vertical rod (513) in a sleeved mode, and the inner wall of the pipe hoop (523, each ball catch (514) engages a locking aperture.
4. The steel frame earthquake resistance detection device according to claim 2, characterized in that: the driving assembly (41) comprises a long shaft air cylinder (410), a third rack (411) and a second gear (412), the long shaft cylinder (410) is fixedly arranged at the top of the base (1), the third rack (411) is fixedly arranged at the output of the long shaft cylinder (410), a sliding groove for the third rack (411) to stretch is fixedly arranged at the top of the base (1), the second gear (412) is sleeved on the outer wall of the middle part of the rotating shaft (6), the second gear (412) is meshed and connected with the third rack (411), two supporting plates (60) are sleeved at two ends of the rotating shaft (6), mounting holes are uniformly formed in each supporting plate (60) in an integrated manner, a bearing is arranged in each mounting hole, the outer ring of the bearing is fixedly connected with the inner wall of the mounting hole, the inner ring of the bearing is fixedly connected with the outer wall of the rotating shaft (6), and the long shaft cylinder (410) is electrically connected with the controller (2).
5. The steel frame earthquake resistance detection device according to claim 3, characterized in that: every group jacking subassembly (42) all includes swing arm (420) and ejector pin (421), swing arm (420) is fixed to be set up on the outer wall of rotation axis (6), ejector pin (421) are articulated to be set up the one end of keeping away from backup pad (60) at swing arm (420), and the bottom of lifter plate (40) is the symmetry and is provided with two connecting blocks to the top of every connecting block all with the bottom fixed connection of lifter plate (40), every connecting block all with ejector pin (421) keep away from the one end of swing arm (420) articulated, the top of base (1) is the symmetry and is provided with four guide bars, and every guide bar all inserts with lifter plate (40) and establishes the connection to the equal fixedly connected with in top of every guide bar prevents taking off the cover.
6. The steel frame earthquake resistance detection device according to claim 4, characterized in that: each group of positioning assemblies (30) comprises a first fastening sleeve (300) and a second fastening sleeve (301), the first fastening sleeve (300) and the second fastening sleeve (301) are symmetrically arranged, the first fastening sleeve (300) and the second fastening sleeve (301) are of U-shaped structures, a second jack is arranged on the outer wall of the first fastening sleeve (300), a positioning bolt (302) is horizontally inserted into the second jack, a second inserting hole is formed in the inner wall of the second fastening sleeve (301), one end of the second bolt penetrates through the first fastening sleeve (300), the other end of the second bolt is inserted into the second inserting hole and connected with the second inserting hole, two grounding blocks (303) are symmetrically arranged on the side walls of the first fastening sleeve (300) and the second fastening sleeve (301), each grounding block (303) is provided with a through hole, and limiting pins (304) are inserted into the two through holes in the same side wall of the first fastening sleeve (300) and the second fastening sleeve (301), the top of the base (1) is provided with a pin hole for fixing the limiting pin (304), and each limiting pin (304) penetrates through the two through holes and is inserted into the two pin holes.
7. The steel frame earthquake resistance detection device according to claim 1, characterized in that: the utility model discloses a servo motor, including lifter plate (40), mounting panel, arm-tie (521), horizontal pole (402) are fixed to the one end that servo motor (530) was kept away from in lifter plate (40) top one end vertical be provided with the bracing piece, the top level of bracing piece is provided with the mounting panel, fixed scale (401) that is provided with on the mounting panel, the one end that arm-tie (521) are close to scale (401) is fixed to establish horizontal pole (402), the fixed toper of being provided with of one end that arm-tie (521) were kept away from in horizontal.
8. A detection method performed by the steel frame earthquake resistance detection device according to any one of claims 1 to 6, comprising the steps of:
s1: setting the termination conditions of the applied load, wherein the termination conditions are divided into the following three types:
s10: the set number of times is reached, and in the invention, the set number of times does not exceed 55 times;
s11: the set load value is reached, the balance standard of the load value can be a force value, a speed value or a combination of the force value and the speed value, specifically, when the load is applied, the force can be applied according to the force, namely the force per second, and the speed can be applied according to the displacement of stretching or compression per minute, and in the invention, the force value does not exceed 50000N;
s12: the displacement of the steel frame to be measured exceeds a set value, which means that the steel frame exceeds the bearing limit, namely the steel frame is damaged;
s2: applying an alternating load to the steel frame, specifically in the following stages:
s20: applying a load in a certain direction to the steel frame, gradually loading the load until the load reaches a constant value which is 2000N, and then gradually returning to zero, wherein the speed of returning to zero is equal to the speed of loading, and the time of the whole loading sub-process is 0.25S;
s21, applying acting forces with the same magnitude and opposite directions on the same acting point of the steel frame, wherein the loading process, the loading method and the acting time are the same as those in the step S10;
s22: steps S20 and S21 are each completed once, referred to as a cycle, and the cycle is repeated until a set number of cycles is reached, the set number being 15, which is the first stage of load loading;
s23: after 15 times, entering a second stage of load loading; when the cycle is completed once, the load value is correspondingly increased on the basis of the previous cycle, wherein the increasing mode is multiplication, namely the load value of the next cycle is several times of the load value of the previous cycle, and the multiplication value is 1.0351;
by adopting a two-section loading process, a buffering process can be provided for the steel frame to be tested and the transmission assembly (53), so that the test inaccuracy caused by sudden application of a large load value is avoided, and the service life of the transmission assembly (53) is prolonged;
s3: when the load application is stopped when the termination condition is reached, recording the whole displacement of the steel frame, and printing and outputting the result;
meanwhile, the information of the tested piece and the related test parameters are stored in a system of the controller (2), so that the same type of steel frame can be conveniently and quickly tested later.
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| CN202010118593.7A CN111256931A (en) | 2020-02-26 | 2020-02-26 | Steel frame shock resistance detection equipment and detection method |
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