CN112098067B - Damping ratio experiment device for steel spring floating slab track vibration isolator - Google Patents
Damping ratio experiment device for steel spring floating slab track vibration isolator Download PDFInfo
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- 238000013016 damping Methods 0.000 title claims abstract description 31
- 238000007667 floating Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 22
- 239000010959 steel Substances 0.000 title claims abstract description 22
- 238000002474 experimental method Methods 0.000 title abstract description 19
- 238000001179 sorption measurement Methods 0.000 claims abstract description 28
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- 230000005540 biological transmission Effects 0.000 claims description 44
- 230000008093 supporting effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 2
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- 238000006073 displacement reaction Methods 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 1
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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
- G01M13/00—Testing of machine parts
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- E—FIXED CONSTRUCTIONS
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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
- G01M7/025—Measuring arrangements
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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
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Abstract
The invention discloses a damping ratio experiment device for a steel spring floating slab track vibration isolator, and relates to the technical field of floating slab tracks. This steel spring floating slab track isolator damping ratio experimental apparatus, including the concrete piece, adsorption equipment, positioner and data acquisition device, the rear of concrete piece is provided with adsorption equipment, adsorption equipment includes the adsorption stage, spout one and telescopic link one, spout one has been seted up to the front surface of adsorption stage, the place ahead of spout one is provided with telescopic link one, the inside of spout one is inserted to the rear end of telescopic link one, the inner rod hole has been seted up to the front end of telescopic link one, spout two has been seted up on the left inner wall in inner rod hole, the place ahead of telescopic link one is provided with telescopic link two, this steel spring floating slab track isolator damping ratio experimental apparatus's application method realizes the automation and the intellectuality of isolator damping ratio experiment, good experimental condition is laid down for the precision and the high efficiency that improve the experiment.
Description
Technical Field
The invention relates to the technical field of floating slab tracks, in particular to a damping ratio experimental device for a steel spring floating slab track vibration isolator.
Background
The floating slab track has good vibration reduction and noise reduction characteristics, and is widely applied to urban subways, the technical key lies in the vibration absorption effect of the vibration isolator, in the traditional railway engineering experiment, the test of the damping ratio usually needs to press a concrete block on the surface of the vibration isolator, then four vibration pickers are arranged on the upper surface of the concrete block at equal intervals, the center of the four vibration pickers is knocked by a drop hammer, the vibration pickers can transmit the collected acceleration and displacement data to a computer at the moment, and the damping ratio data of the vibration isolator can be obtained through a theoretical algorithm.
However, the existing damping ratio experiment is often carried out by adopting an artificial method, so that the defects exist, the vibration isolator is difficult to ensure to be just placed in the center of the lower surface of the concrete block, the experiment precision is greatly reduced, the experiment efficiency is influenced, and meanwhile, the automation and the intelligence of the experiment can not be realized by knocking the concrete block and often adopting the artificial method.
Disclosure of Invention
The invention aims to provide a damping ratio experiment device of a steel spring floating slab track vibration isolator, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a steel spring floating slab track isolator damping ratio experimental apparatus, includes concrete piece, adsorption equipment, positioner and data acquisition device, the rear of concrete piece is provided with adsorption equipment, adsorption equipment includes adsorption platform, spout one and telescopic link one, its characterized in that: the front surface of the adsorption platform is provided with a first sliding groove, a first telescopic rod is arranged in front of the first sliding groove, the rear end of the first telescopic rod is inserted into the first sliding groove, the front end of the first telescopic rod is provided with an inner rod hole, the left inner wall of the inner rod hole is provided with a second sliding groove, a second telescopic rod is arranged in front of the first telescopic rod, the positioning device comprises a positioning platform, a first sleeve rope and a second sleeve rope, the positioning platform comprises a clamping port, a threaded hole and a threaded rod, the positioning platform is provided with the clamping port at one end close to a concrete block, the upper surface of the positioning platform is provided with the threaded hole, the threaded rod is arranged in the threaded hole and is connected with the threaded hole through threads, the lower end of the threaded rod is provided with a motor, an output shaft of the motor is fixedly connected with the lower end of the threaded rod, the positioning platform comprises four positioning platforms, the four positioning platforms are respectively positioned at four corners of a concrete block, the lower end of each positioning platform is provided with a first sleeve rope, the number of the first sleeve ropes is two, and the two first sleeve ropes are respectively sleeved on the positioning platforms at opposite angles.
The rear end of the second telescopic rod is fixedly connected with an inner rod, the rear end of the inner rod is inserted into the inner part of the inner rod hole, the left side of the rear end of the inner rod is fixedly connected with a sliding column, the left end of the sliding column is inserted into the inner part of the second sliding groove, a limiting column is arranged in front of the second telescopic rod, the rear end of the limiting column is fixedly connected to the second telescopic rod, and a limiting rod is arranged in the limiting column.
The lower extreme of gag lever post inserts in the front ring of spacing post, gag lever post and spacing post adaptation, the lower extreme rear fixedly connected with of gag lever post drops the hammer, telescopic link two is keeping away from that one end fixedly connected with sucking disc of interior pole, the sucking disc is directly over the hammer that drops, the upper surface that the hammer that drops is adsorbed to the sucking disc, the below of concrete piece is provided with positioner.
The upper end of the positioning table is provided with two sleeve ropes, the number of the sleeve ropes is two, the two sleeve ropes are respectively sleeved on the diagonal positioning table, and the data acquisition device is arranged below the concrete block and is positioned below the positioning device.
The data acquisition device comprises a terminal, a first transmission line and a vibration isolator, the first transmission line and the second transmission line are fixedly connected in front of the terminal, the vibration isolator is fixedly connected to the front end of the first transmission line, the first vibration pickup table is fixedly connected to the front end of the second transmission line, and the second vibration pickup table is fixedly connected to the upper portion of the first vibration pickup table.
Preferably, a transmission hole is formed in the front end of the vibration pickup table II, a transmission line III is arranged in front of the transmission hole, the rear end of the transmission line III is inserted into the transmission hole, a transmission line IV is fixedly connected to the front end of the transmission line III, vibration pickers are fixedly connected to the front end of the transmission line IV, and the number of the vibration pickers is four.
The invention provides a use method of a steel spring floating slab track vibration isolator damping ratio experimental device, which comprises the following steps:
taking down the limiting rod and the drop hammer from the limiting column, and adsorbing the concrete block by using a sucking disc to lift upwards;
starting a motor and a first telescopic rod to lift the concrete block to a proper angle;
placing the vibration isolator in the cross center of the two sleeve ropes I, loosening the suction disc, and starting the motor to lower the concrete block to the upper part of the vibration isolator;
moving the adsorption device, aligning the sucker to the cross center of the second sleeve rope and then fixing the sucker;
lifting the sucker upwards, inserting the limiting rod into the limiting column, and adsorbing the drop hammer below the sucker;
placing vibration pickers on the upper surface of the concrete block in the included range of the two ropes at equal intervals;
the positioning device is integrally removed, the drop hammer is loosened through the suction disc to knock the concrete block, and then vibration data of the concrete block under the supporting effect of the vibration isolator are obtained, and the vibration data are used for further analyzing the damping ratio parameters of the vibration isolator.
Compared with the prior art, the invention has the beneficial effects that:
(1) this steel spring floating slab track isolator damping ratio experimental apparatus, through the fixed of location platform to the concrete piece, because the direct joint of joint mouth is in the four corners department of concrete piece, make the center of four location platforms coincide with the center of concrete piece, the central point that a pair of positioner bottom center of cover rope that uses the setting under the location platform put with accurate positioning concrete piece 1, the central point that can accurate positioner through the crosspoint of two cover ropes one puts, the crosspoint of two cover ropes one is arranged in to the isolator, alright place the isolator in the lower surface central point of concrete piece in order to be accurate, the measuring degree of accuracy of device has been improved.
(2) This steel spring floating slab track isolator damping ratio experimental apparatus, through the central point who seeks the positioner upper surface puts, with the cross center of sucking disc locking and second of mantle rope, through adsorbing the upper surface central authorities that the drop hammer will drop the accurate location in the concrete piece of hammer, through the absorption of contact sucking disc make the drop hammer freely fall down, because the limiting displacement of spacing post and gag lever post, the drop hammer can fall perpendicularly in appointed high department, accurate pounding is in the central authorities of concrete piece, the degree of accuracy and the controllability of device experiment have been improved.
(3) This steel spring floating slab track isolator damping ratio experimental apparatus, traditional experimental mode adopts the artifical mode of handheld weight knocking the concrete piece usually, but its placement position of the artifical mode of knocking has certain uncertainty, the size of the power of knocking the concrete face at every turn is also inhomogeneous, it is great to lead to the discrete of experimental result, and do not possess better comparability, drop hammer through the setting, make the gravity of the self of drop hammer and the height of whereabouts all have certain data nature, can be accurate carry out the record and observe, the convenience carries out specific analysis to the experimental result, the quality of experiment has been guaranteed.
(4) This steel spring floating slab track isolator damping ratio experimental apparatus when carrying out isolator damping ratio experiment, has a great deal of unsafe factor with the isolator when placing in concrete block bottom, especially supports concrete block and jacking in-process, and the concrete block has the danger of whereabouts suddenly, has brought the inconvenience for the work of placing of isolator. Through adsorption equipment's design, when the sucking disc exert adsorption, the locating platform has played the lifting effect simultaneously to the dual security of having guaranteed the concrete piece lifting in-process, and the accuracy when isolator 403 places has improved the efficiency of experiment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an adsorption apparatus according to the present invention;
FIG. 3 is an enlarged view of the invention at A;
FIG. 4 is a schematic view of the telescoping pole of the present invention;
FIG. 5 is an enlarged view of the invention at B;
FIG. 6 is an enlarged view of the present invention at C;
FIG. 7 is a schematic view of a positioning device according to the present invention;
FIG. 8 is a schematic view of a positioning table according to the present invention;
FIG. 9 is a schematic view of a data acquisition device of the present invention;
FIG. 10 is an enlarged view of the present invention at D.
In the figure: 1. the device comprises a concrete block, a 2 adsorption device, a 201 adsorption platform, a 202 sliding groove I, a 203 telescopic rod I, a 204 telescopic rod II, a 205 inner rod, a 206 inner rod hole, a 207 sliding groove II, a 208 sliding column, a 209 suction cup, a 210 limiting column, a 211 limiting rod, a 212 drop hammer, a 3 positioning device, a 301 positioning platform, a 302 clamping interface, a 303 threaded hole, a 304 threaded rod, a 305 motor, a 306 bottom column, a 307 rope sleeving I, a 308 rope sleeving II, a 4 data acquisition device, a 401 terminal, a 402 transmission line I, a 403 vibration isolator, a 404 transmission line II, a 405 vibration pickup platform I, a 406 vibration pickup platform II, a 407 transmission hole, a 408 transmission line III, a 409 transmission line IV and a 410 vibration pickup.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a technical solution: the utility model provides a steel spring floating slab track isolator damping ratio experimental apparatus, includes concrete block 1, adsorption equipment 2, positioner 3 and data acquisition device 4, and the rear of concrete block 1 is provided with adsorption equipment 2, and adsorption equipment 2 is including adsorbing platform 201, a spout 202 and a telescopic link 203, its characterized in that: the front surface of the adsorption platform 201 is provided with a first sliding groove 202, a first telescopic rod 203 is arranged in front of the first sliding groove 202, the rear end of the first telescopic rod 203 is inserted into the first sliding groove 202, the front end of the first telescopic rod 203 is provided with an inner rod hole 206, the left inner wall of the inner rod hole 206 is provided with a second sliding groove 207, a second telescopic rod 204 is arranged in front of the first telescopic rod 203, the positioning device 3 comprises a positioning platform 301, a first loop rope 307 and a second loop rope 308, the positioning platform 301 comprises a clamping interface 302, a threaded hole 303 and a threaded rod 304, the positioning platform 301 is provided with the clamping interface 302 at the end close to the concrete block 1, the upper surface of the positioning platform 301 is provided with the threaded hole 303, the threaded rod 304 is arranged inside the threaded hole 303, the threaded rod 304 is connected with the threaded hole 303 through threads, the lower end of the threaded rod 304 is provided with a motor 305, the, the number of the positioning tables 301 is four, the four positioning tables 301 are respectively located at four corners of the concrete block 1, the lower end of the positioning table 301 is provided with a first sleeve rope 307, the number of the first sleeve ropes 307 is two, and the two first sleeve ropes 307 are respectively sleeved on the diagonal positioning tables 301.
An inner rod 205 is fixedly connected to the rear end of the second telescopic rod 204, the rear end of the inner rod 205 is inserted into the inner rod hole 206, a sliding column 208 is fixedly connected to the left side of the rear end of the inner rod 205, the left end of the sliding column 208 is inserted into the second sliding groove 207, a limiting column 210 is arranged in front of the second telescopic rod 204, the rear end of the limiting column 210 is fixedly connected to the second telescopic rod 204, and a limiting rod 211 is arranged inside the limiting column 210.
The lower end of the limiting rod 211 is inserted into a front ring of the limiting column 210, the limiting rod 211 is matched with the limiting column 210, a drop hammer 212 is fixedly connected to the rear of the lower end of the limiting rod 211, a suction cup 209 is fixedly connected to one end of the telescopic rod II 204 far away from the inner rod 205, the suction cup 209 is arranged right above the drop hammer 212, the suction cup 209 adsorbs the upper surface of the drop hammer 212, and the positioning device 3 is arranged below the concrete block 1.
The upper end of the positioning table 301 is provided with two sleeve ropes 308, the number of the two sleeve ropes 308 is two, the two sleeve ropes 308 are respectively sleeved on the diagonal positioning table 301, the data acquisition device 4 is arranged below the concrete block 1, and the data acquisition device 4 is positioned below the positioning device 3.
The data acquisition device 4 comprises a terminal 401, a first transmission line 402 and a vibration isolator 403, the first transmission line 402 and a second transmission line 404 are fixedly connected in front of the terminal 401, the vibration isolator 403 is fixedly connected to the front end of the first transmission line 402, the first vibration pickup table 405 is fixedly connected to the front end of the second transmission line 404, and the second vibration pickup table 406 is fixedly connected to the upper portion of the first vibration pickup table 405.
A transmission hole 407 is formed in the front end of the second vibration pickup table 406, a transmission line three 408 is arranged in front of the transmission hole 407, the rear end of the transmission line three 408 is inserted into the transmission hole 407, a transmission line four 409 is fixedly connected to the front end of the transmission line three 408, vibration pickers 410 are fixedly connected to the front end of the transmission line four 409, and the number of the vibration pickers 410 is four.
A use method of a steel spring floating slab track vibration isolator damping ratio experimental device comprises the following steps:
(1) taking down the limiting rod and the drop hammer from the limiting column, and adsorbing the concrete block by using a sucking disc to lift upwards;
(2) after the concrete block is lifted for a certain distance, the four positioning tables are respectively placed at the four corners of the concrete block to be clamped;
(3) starting a motor and a first telescopic rod to lift the concrete block to a proper angle;
(4) placing the vibration isolator in the cross center of the two sleeve ropes I, loosening the suction disc, and starting the motor to lower the concrete block to the upper part of the vibration isolator;
(5) moving the adsorption device, aligning the sucker to the cross center of the second sleeve rope and then fixing the sucker;
(6) lifting the sucker upwards, inserting the limiting rod into the limiting column, and adsorbing the drop hammer below the sucker;
(7) placing vibration pickers on the upper surface of the concrete block in the included range of the two ropes at equal intervals;
(8) the positioning device is integrally removed, the drop hammer is loosened through the suction disc to knock the concrete block, and then vibration data of the concrete block under the supporting effect of the vibration isolator are obtained, and the vibration data are used for further analyzing the damping ratio parameters of the vibration isolator.
The working principle is as follows:
the first step is as follows: through the fixed of locating platform 301 to concrete block 1, because the direct joint of joint mouth 302 is in the four corners department of concrete block 1, make the center of four locating platforms 301 coincide with the center of concrete block 1, the central point that uses the lasso one 307 that sets up under the locating platform 301 to 3 device bottom centers of positioner with accurate positioning concrete block 1 puts, the central point that can accurate positioner 3 through the crosspoint of two lasso one 307 puts isolator 403 in the crosspoint of two lasso one 307, alright place isolator 403 in the lower surface central point of concrete block 1 with the accuracy, the measuring degree of accuracy of device has been improved.
The second step is that: through the central point who seeks positioner 3 device upper surface puts, with the cross center of sucking disc 209 locking and two 308 of cover rope, through adsorbing the drop hammer 212 with the accurate location in the upper surface central authorities of concrete block 1 of drop hammer 212, the absorption through contact sucking disc 209 makes the drop hammer 212 freely fall down, because spacing post 210 and gag lever post 211's limiting displacement, the drop hammer 212 can fall perpendicularly in appointed height department, accurate pounding is in the central authorities of concrete block 1, the degree of accuracy and the controllability of device experiment have been improved.
The third step: traditional experimental mode adopts the artifical mode that handheld weight struck the concrete piece usually, but its drop point position of the artifical mode of striking has certain uncertainty, the size of the power of striking the concrete face at every turn is also inhomogeneous, the discrete that leads to the experimental result is great, and does not have better comparability, drop hammer 212 through the setting, make the gravity of drop hammer 212 self and the height of whereabouts all have certain data nature, can be accurate carry out the record and observe, the convenience carries out specific analysis to the experimental result, the quality of experiment has been guaranteed.
The fourth step: during the experiment of the damping ratio of the vibration isolator, many unsafe factors exist when the vibration isolator 403 is placed at the bottom of the concrete block 1, particularly, in the processes of supporting the concrete block and jacking, the concrete block 1 has the risk of falling suddenly, and inconvenience is brought to the placing work of the vibration isolator 403. Through the design of adsorption equipment 2, when sucking disc 209 performance adsorption, location platform 301 has played the lifting effect simultaneously to the dual security of having guaranteed concrete block 1 lifting in-process, and the accuracy when isolator 403 places have improved the efficiency of experiment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a steel spring floating slab track isolator damping ratio experimental apparatus, includes concrete block (1), adsorption equipment (2), positioner (3) and data acquisition device (4), the rear of concrete block (1) is provided with adsorption equipment (2), adsorption equipment (2) are including adsorbing platform (201), spout (202) and telescopic link (203), its characterized in that: the front surface of the adsorption platform (201) is provided with a first sliding groove (202), a first telescopic rod (203) is arranged in front of the first sliding groove (202), the rear end of the first telescopic rod (203) is inserted into the first sliding groove (202), the front end of the first telescopic rod (203) is provided with an inner rod hole (206), the left inner wall of the inner rod hole (206) is provided with a second sliding groove (207), the front side of the first telescopic rod (203) is provided with a second telescopic rod (204), the positioning device (3) comprises a positioning platform (301), a first sleeve rope (307) and a second sleeve rope (308), the positioning platform (301) comprises a clamping interface (302), a threaded hole (303) and a threaded rod (304), the positioning platform (301) is provided with the clamping interface (302) at one end close to the concrete block (1), the upper surface of the positioning platform (301) is provided with the threaded hole (303), and the threaded rod (304) is arranged in the threaded hole (303), threaded rod (304) and screw hole (303) are in the same place through threaded connection, the lower extreme of threaded rod (304) is provided with motor (305), the lower extreme of output shaft fixed connection threaded rod (304) of motor (305), the lower extreme fixedly connected with sill pillar (306) of motor (305), the quantity of location platform (301) is four, four location platform (301) are located the four corners department of concrete piece (1) respectively, the lower extreme of location platform (301) is provided with noose one (307), the quantity of noose one (307) is two, two the noose one (307) cup joint respectively on the location platform (301) at diagonal angle.
2. The steel spring floating slab track isolator damping ratio experimental apparatus of claim 1, wherein: interior pole (205) of rear end fixedly connected with of two (204) on the telescopic link, the inside in pole hole (206) is inserted to the rear end of interior pole (205), rear end left side fixedly connected with traveller (208) of interior pole (205), the inside of spout two (207) is inserted to the left end of traveller (208), the place ahead of telescopic link two (204) is provided with spacing post (210), the rear end fixed connection of spacing post (210) is on telescopic link two (204), the inside of spacing post (210) is provided with gag lever post (211).
3. The steel spring floating slab track isolator damping ratio experimental apparatus of claim 2, wherein: the lower extreme of gag lever post (211) inserts in the front ring of spacing post (210), gag lever post (211) and spacing post (210) adaptation, lower extreme rear fixedly connected with drop hammer (212) of gag lever post (211), telescopic link two (204) are keeping away from that one end fixedly connected with sucking disc (209) of interior pole (205), sucking disc (209) are directly over drop hammer (212), the upper surface of drop hammer (212) is adsorbed in sucking disc (209), the below of concrete piece (1) is provided with positioner (3).
4. The steel spring floating slab track isolator damping ratio experimental apparatus of claim 3, wherein: the upper end of the positioning table (301) is provided with two sleeve ropes (308), the number of the two sleeve ropes (308) is two, the two sleeve ropes (308) are respectively sleeved on the diagonal positioning table (301), a data acquisition device (4) is arranged below the concrete block (1), and the data acquisition device (4) is located below the positioning device (3).
5. The steel spring floating slab track isolator damping ratio experimental apparatus of claim 4, wherein: the data acquisition device (4) comprises a terminal (401), a first transmission line (402) and a vibration isolator (403), the first transmission line (402) and the second transmission line (404) are fixedly connected to the front of the terminal (401), the vibration isolator (403) is fixedly connected to the front end of the first transmission line (402), the first vibration pickup table (405) is fixedly connected to the front end of the second transmission line (404), and the second vibration pickup table (406) is fixedly connected to the upper portion of the first vibration pickup table (405).
6. The steel spring floating slab track isolator damping ratio experimental device according to claim 5, characterized in that: pick up the front end of shaking platform two (406) and seted up transmission hole (407), the place ahead of transmission hole (407) is provided with transmission line three (408), the inside of transmission hole (407) is inserted to the rear end of transmission line three (408), the front end fixedly connected with transmission line four (409) of transmission line three (408), the front end fixedly connected with vibration pickup (410) of transmission line four (409), the quantity of vibration pickup (410) is four.
7. The use method of the steel spring floating slab track vibration isolator damping ratio experimental device according to claim 6, is characterized in that: the method comprises the following steps:
(1) taking down the limiting rod and the drop hammer from the limiting column, and adsorbing the concrete block by using a sucking disc to lift upwards;
(2) after the concrete block is lifted for a certain distance, the four positioning tables are respectively placed at the four corners of the concrete block to be clamped;
(3) starting a motor and a first telescopic rod to lift the concrete block to a proper angle;
(4) placing the vibration isolator in the cross center of the two sleeve ropes I, loosening the suction disc, and starting the motor to lower the concrete block to the upper part of the vibration isolator;
(5) moving the adsorption device, aligning the sucker to the cross center of the second sleeve rope and then fixing the sucker;
(6) lifting the sucker upwards, inserting the limiting rod into the limiting column, and adsorbing the drop hammer below the sucker;
(7) placing vibration pickers on the upper surface of the concrete block in the included range of the two ropes at equal intervals;
(8) the positioning device is integrally removed, the drop hammer is loosened through the suction disc to knock the concrete block, and then vibration data of the concrete block under the supporting effect of the vibration isolator are obtained, and the vibration data are used for further analyzing the damping ratio parameters of the vibration isolator.
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Effective date of registration: 20240326 Address after: 410004 Central South University Railway Campus Laboratory, No. 68 Shaoshan South Road, Tianxin District, Changsha City, Hunan Province Patentee after: Hunan Tieyuan Civil Engineering Testing Co.,Ltd. Country or region after: China Address before: Yuelu District City, Hunan province 410083 Changsha Lushan Road No. 932 Patentee before: CENTRAL SOUTH University Country or region before: China |