CN111238753A - Small vibration source and large load vertical vibration experiment table convenient to assemble and disassemble - Google Patents
Small vibration source and large load vertical vibration experiment table convenient to assemble and disassemble Download PDFInfo
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- CN111238753A CN111238753A CN202010156591.7A CN202010156591A CN111238753A CN 111238753 A CN111238753 A CN 111238753A CN 202010156591 A CN202010156591 A CN 202010156591A CN 111238753 A CN111238753 A CN 111238753A
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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
Abstract
The invention provides a small vibration source and large load vertical vibration experiment table convenient to assemble and disassemble, which consists of 31 parts. After the experiment table is put on a large-load or an experiment object bearing the large load, the spring is compressed and converts the gravitational potential energy of the load into elastic potential energy, and the spring bears the weight of the load. When the vibration exciter outputs force, the compression amount of the spring is reduced, and the output force of the vibration exciter and the elastic force of the spring support the load together. After the maximum output of the vibration exciter is determined, the size of the spring is changed, the stiffness coefficient of the spring is further changed, under the same excitation, the extension amounts of the springs with different stiffness coefficients are different, and therefore the vibration amplitude can be adjusted by changing the size of the spring after the vibration exciter is determined. The experiment table has the advantages that the single weight of all parts is small, the experiment table can be mounted and dismounted without carrying tools, and the weight of a load is easy to adjust. The invention has strong universality, simple structure, easy processing and low cost.
Description
Technical Field
The invention provides a small vibration source and large load vertical vibration experiment table convenient to assemble and disassemble, and particularly relates to a vertical vibration experiment table which is used for a large load or an experiment object bearing the large load, is easy to assemble and disassemble, has adjustable load and can carry out the experiment under the condition of only a small vibration source.
Background
At present, a vibration source of a vertical vibration experiment usually adopts a vibration table or a vibration exciter, the vibration table can provide a large vibration source, but the vibration experiment of a large load has high requirements on the performance of the vibration table, and the vibration table is high in price. The vibration exciter is low in price and convenient to operate, but cannot bear the weight of a heavy load, and cannot be used for vibration experiments of the heavy load.
Disclosure of Invention
Aiming at the problems, the invention provides the small vibration source and large load vertical vibration experiment table which is convenient to assemble and disassemble, and the small vibration source can be used for carrying out vertical vibration experiments on large loads or experiment objects bearing the large loads, so that the contradiction between the small vibration source and the large loads is solved.
The invention is realized by the following technical scheme:
the invention provides a small vibration source and large load vertical vibration experiment table convenient to assemble and disassemble, which comprises a vibration exciter (1), a spring upper fixing column (2), a vibration exciter loading rod (3), an adapter plate (4), a load disc (5), an M8 counter bore (6), an M8 through hole (7), an experiment object (8), a spring (9), a spring base (10), a height adjusting seat (11), a vibration meter shock pad (12), an M5 counter bore (13), an M5 through hole (14), a short connecting rod (15), a long connecting rod (16), a laser vibration meter (17), a laser vibration meter base (18), a bottom plate (19), a protective ring-A type (20), a protective ring-B type (21), a protective ring-C1 type (22), a protective ring-C2 type (23), a protective ring-D type (24), a protective ring-E type (25), a protective ring connecting block (26), The device comprises an inclined support, a long support (27), an inclined support, a short support (28), a bottom plate protection ring connecting block (29), a bottom plate connecting block (30) and an extension plate (31); the relationship between the components is as follows: the base plate (19) is connected with the extension plate (31) through a base plate connecting block (30), the height adjusting seat (11), the vibration meter shock pad (12) and the vibration exciter (1) are placed on the base plate (19), the spring base (10) is placed on the height adjusting seat (11), a part of the lower surface of the spring (9) is placed in a circular groove above the spring base (10), the upper spring fixing column (2) is connected with the adapter plate (4) and then placed on the spring (9), the laser vibration meter base (18) is placed on the vibration meter shock pad (12), the laser vibration meter (17) is connected with the laser vibration meter base (18) through an M5 counter bore (13), the experimental object (8) is placed on the adapter plate (4), a plurality of load discs (5) are connected through an M8 counter bore (6) and an M8 through hole (7) and then placed on the experimental object (8), and the vibration exciter (1) is connected with the vibration exciter loading rod (3), the long connecting rod (16) slides on the vibration exciter loading rod (3) and can be fixed through an M5 through hole (14), the long connecting rod (16) is connected with the short connecting rod (15) through threads, the short connecting rod (15) is connected with the adapter plate (4) through a bolt, a protective ring-A type (20) is fixed on a bottom plate (19) through a bottom plate protective ring connecting block (29), the protective ring-A type (20), the protective ring-B type (21), the protective ring-C1 type (22), the protective ring-C2 type (23), the protective ring-D type (24) and the protective ring-E type (25) are sequentially connected through a protective ring connecting block (26) from bottom to top, the inclined strut-long part (27) is connected with the protective ring-C2 type (23) and the extension plate (31), and the inclined strut-short part (28) is connected with the protective ring-B type (21) and the extension plate (31);
a round groove is arranged above the spring base (10), a small part of the lower surface of the spring (9) is inserted into the groove, external threads are arranged below the spring base (10), internal threads are arranged on the height adjusting base (11), and the spring base and the height adjusting base can adjust the initial height or level through the threads;
after the short connecting rod (15) and the long connecting rod (16) are connected with the adapter plate (4), the adapter plate (4) is placed on the spring (9), meanwhile, the long connecting rod (16) is sleeved on the vibration exciter loading rod (3), and after all the loading discs (5) are installed, the long connecting rod (16) and the vibration exciter loading rod (3) are fixed through the M5 through holes (14);
the laser vibration meter (17) is arranged on a laser vibration meter base (18) for adjusting the laser direction and for wiring and shock absorption;
the outer diameter of the upper spring fixing column (2) is slightly smaller than the inner diameter of the spring (9), and the height of the compressed spring (9) is larger than that of the upper spring fixing column (2);
one side of the protective ring connecting block (26) is a plane, the other side of the protective ring connecting block is an arc, and the radian is the same as that of the protective ring;
the protective ring-A type (20), the protective ring-B type (21), the protective ring-C1 type (22), the protective ring-C2 type (23), the protective ring-D type (24) and the protective ring-E type (25) are sequentially installed along with the increase of the installation height of a load, wherein firstly, the operation is convenient for safety and secondly, the weight is reduced;
4 holes are reserved in the protective ring-B type (21), and the holes are used for adjusting the height and wiring devices such as a vibration exciter (1), a laser vibration meter (17) and the like;
a hole is reserved in the protective ring-C1 type (22) so as to fix the long connecting rod (16) and the vibration exciter loading rod (3);
the spring (9) has 2 functions: firstly, when the vibration generator is static, the vibration generator bears the load weight, and the small vibration source is prevented from being crushed; and secondly, under the condition of dynamic excitation, a driving force similar to the load weight is provided.
The invention has the advantages that: after the experiment table is put on a large-load or an experiment object bearing the large load, the spring is compressed and converts the gravitational potential energy of the load into elastic potential energy, and the spring bears the weight of the load. When the vibration exciter outputs force, the compression amount of the spring is reduced, and the output force of the vibration exciter and the elastic force of the spring support the load together. After the maximum output of the vibration exciter is determined, the size of the spring is changed, the stiffness coefficient of the spring is further changed, under the same excitation, the extension amounts of the springs with different stiffness coefficients are different, and therefore the vibration amplitude can be adjusted by changing the size of the spring after the vibration exciter is determined. The experiment table has the advantages that the single weight of all parts is small, the experiment table can be mounted and dismounted without carrying tools, and the weight of a load is easy to adjust.
The invention has strong universality, simple structure, easy processing and low cost.
Drawings
FIG. 1 is an internal side view of a vertical vibration experiment table of the present invention;
FIG. 2 is a partial view of a vertical vibration experiment table of the present invention;
FIG. 3 is a side view of a vertical vibration test stand according to the present invention
Reference numerals: 1-vibration exciter, 2-spring upper fixed column, 3-vibration exciter loading rod, 4-adapter plate, 5-load disc, 6-M8 counter bore, 7-M8 through hole, 8-experimental object, 9-spring, 10-spring base, 11-height adjusting base, 12-vibration meter shock pad, 13-M5 counter bore, 14-M5 through hole, 15-short connecting rod, 16-long connecting rod, 17-laser vibration meter, 18-laser vibration meter base, 19-bottom plate, 20-guard ring-A type, 21-guard ring-B type, 22-guard ring-C1 type, 23-guard ring-C2 type, 24-guard ring-D type, 25-guard ring-E type, 26-guard ring connecting block, 27-diagonal support-long, 28-diagonal support-short, 29-bottom plate protection ring connecting block, 30-bottom plate connecting block and 31-extension plate.
Detailed Description
The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of the present invention, and not all embodiments, wherein the number of the springs 9 is 4, the number of the spring fixing posts 2 is 4, the number of the spring bases 10 is 4, and the number of the height adjusting bases 11 is 4, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention or only the embodiments of changing the number of the springs belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing embodiments of the present invention.
A vertical vibration experiment table with a small vibration source and a large load, which is convenient to assemble and disassemble, is composed of a vibration exciter 1, a spring upper fixed column 2, a vibration exciter loading rod 3, an adapter plate 4, a load disc 5, an M8 counter bore 6, an M8 through hole 7, an experiment object 8, a spring 9, a spring base 10, a height adjusting base 11, a vibration meter shock pad 12, an M5 counter bore 13, an M5 through hole 14, a short connecting rod 15, a long connecting rod 16, a laser vibration meter 17, a laser vibration meter base 18, a bottom plate 19, a protection ring-A type 20, a protection ring-B type 21, a protection ring-C1 type 22, a protection ring-C2 type 23, a protection ring-D type 24, a protection ring-E type 25, a protection ring connecting block 26, an inclined support-long 27, an inclined support-short 28, a bottom plate protection ring connecting block 29, a bottom plate connecting block 30 and an extension plate 31, and is characterized in that: a bottom plate 19 and an extension plate 31 are connected through a bottom plate connecting block 30, a height adjusting seat 11, a vibration meter shock pad 12 and a vibration exciter 1 are placed on the bottom plate 19, a spring base 10 is placed on the height adjusting seat 11, a part of the lower part of a spring 9 is placed in a circular groove above the spring base 10, an upper spring fixing column 2 is connected with an adapter plate 4 and then placed on the spring 9, a laser vibration meter base 18 is placed on the vibration meter shock pad 12, a laser vibration meter 17 is connected with the laser vibration meter base 18 through an M5 counter bore 13, an experimental object 8 is placed on the adapter plate 4, a plurality of load discs 5 are connected through M8 counter bores 6 and M8 through holes 7 and then placed on the experimental object 8, the vibration exciter 1 is connected with a vibration exciter loading rod 3, a long connecting rod 16 slides on the vibration exciter loading rod 3 and can be fixed through an M5 through hole 14, the long connecting rod 16 is connected with a short connecting rod 15 through threads, the short connecting rod 15 is connected with the adapter plate 4 through a bolt, a protective ring-A type 20 is fixed on a bottom plate 19 through a bottom plate protective ring connecting block 29, the protective ring-A type 20, the protective ring-B type 21, the protective ring-C1 type 22, the protective ring-C2 type 23, the protective ring-D type 24 and the protective ring-E type 25 are sequentially connected through a protective ring connecting block 26 from bottom to top, an inclined support-long 27 is connected with the protective ring-C2 type 23 and an extension plate 31, and an inclined support-short 28 is connected with the protective ring-B type 21 and the extension plate 31.
A round groove is formed above the spring base 10, a small part of the lower surface of the spring 9 is inserted into the groove, external threads are formed below the spring base 10, internal threads are formed in the height adjusting seat 11, and the spring base and the height adjusting seat are adjusted to be in initial height or leveling through the threads.
After the short connecting rod 15 and the long connecting rod 16 are connected with the adapter plate 4, the adapter plate 4 is placed on the spring 9, meanwhile, the long connecting rod 16 is sleeved on the vibration exciter loading rod 3, and after all the load discs 5 are installed, the long connecting rod 16 and the vibration exciter loading rod 3 are fixed through the M5 through holes 14.
The laser vibration meter 17 is installed on a laser vibration meter base 18, and is used for adjusting the laser direction and for wiring and shock absorption.
The outer diameter of the upper spring fixing column 2 is slightly smaller than the inner diameter of the spring 9, and the height of the compressed spring 9 is larger than that of the upper spring fixing column 2.
One side of the guard ring connecting block 26 is a plane, the other side is an arc, and the radian is the same as that of the guard ring.
The guard ring-A type 20, the guard ring-B type 21, the guard ring-C1 type 22, the guard ring-C2 type 23, the guard ring-D type 24 and the guard ring-E type 25 are sequentially installed along with the increase of the installation height of the load, wherein the safety is realized firstly, and the operation is convenient for reducing the weight.
The protective ring-B type 21 is provided with 4 holes for adjusting the height and for wiring devices such as a vibration exciter 1, a laser vibration meter 17 and the like.
The protective ring-C1 type 22 is provided with a hole for fixing the long connecting rod 16 and the exciter loading rod 3.
The spring 9 has 2 functions: firstly, when the vibration generator is static, the vibration generator bears the load weight, and the small vibration source is prevented from being crushed; and secondly, under the condition of dynamic excitation, a driving force similar to the load weight is provided.
It will be apparent to those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, which falls within the scope of the invention.
Claims (1)
1. The utility model provides a vertical vibration laboratory bench of little vibration source heavy load of convenient loading and unloading which characterized in that: the device comprises a vibration exciter (1), a spring upper fixing column (2), a vibration exciter loading rod (3), an adapter plate (4), a load disc (5), an M8 counter bore (6), an M8 through hole (7), an experimental object (8), a spring (9), a spring base (10), a height adjusting seat (11), a vibration meter shock pad (12), an M5 counter bore (13), an M5 through hole (14), a short connecting rod (15), a long connecting rod (16), a laser vibration meter (17), a laser vibration meter base (18), a bottom plate (19), a protective ring-A type (20), a protective ring-B type (21), a protective ring-C1 type (22), a protective ring-C2 type (23), a protective ring-D type (24), a protective ring-E type (25), a protective ring connecting block (26), an inclined support-long type (27), an inclined support-short type (28), A bottom plate protective ring connecting block (29), a bottom plate connecting block (30) and an extension plate (31); the relationship between the components is as follows: the base plate (19) is connected with the extension plate (31) through a base plate connecting block (30), the height adjusting seat (11), the vibration meter shock pad (12) and the vibration exciter (1) are placed on the base plate (19), the spring base (10) is placed on the height adjusting seat (11), a part of the lower surface of the spring (9) is placed in a circular groove above the spring base (10), the upper spring fixing column (2) is connected with the adapter plate (4) and then placed on the spring (9), the laser vibration meter base (18) is placed on the vibration meter shock pad (12), the laser vibration meter (17) is connected with the laser vibration meter base (18) through an M5 counter bore (13), the experimental object (8) is placed on the adapter plate (4), a plurality of load discs (5) are connected through an M8 counter bore (6) and an M8 through hole (7) and then placed on the experimental object (8), and the vibration exciter (1) is connected with the vibration exciter loading rod (3), the long connecting rod (16) slides on the vibration exciter loading rod (3) and can be fixed through an M5 through hole (14), the long connecting rod (16) is connected with the short connecting rod (15) through threads, the short connecting rod (15) is connected with the adapter plate (4) through a bolt, a protective ring-A type (20) is fixed on a bottom plate (19) through a bottom plate protective ring connecting block (29), the protective ring-A type (20), the protective ring-B type (21), the protective ring-C1 type (22), the protective ring-C2 type (23), the protective ring-D type (24) and the protective ring-E type (25) are sequentially connected through a protective ring connecting block (26) from bottom to top, the inclined strut-long part (27) is connected with the protective ring-C2 type (23) and the extension plate (31), and the inclined strut-short part (28) is connected with the protective ring-B type (21) and the extension plate (31);
a round groove is arranged above the spring base (10), a small part of the lower surface of the spring (9) is inserted into the groove, external threads are arranged below the spring base (10), internal threads are arranged on the height adjusting base (11), and the spring base and the height adjusting base can adjust the initial height or level through the threads;
after the short connecting rod (15) and the long connecting rod (16) are connected with the adapter plate (4), the adapter plate (4) is placed on the spring (9), meanwhile, the long connecting rod (16) is sleeved on the vibration exciter loading rod (3), and after all the loading discs (5) are installed, the long connecting rod (16) and the vibration exciter loading rod (3) are fixed through the M5 through holes (14);
the laser vibration meter (17) is arranged on a laser vibration meter base (18) for adjusting the laser direction and for wiring and shock absorption;
the outer diameter of the upper spring fixing column (2) is slightly smaller than the inner diameter of the spring (9), and the height of the compressed spring (9) is larger than that of the upper spring fixing column (2);
one side of the protective ring connecting block (26) is a plane, the other side of the protective ring connecting block is an arc, and the radian is the same as that of the protective ring;
the protective ring-A type (20), the protective ring-B type (21), the protective ring-C1 type (22), the protective ring-C2 type (23), the protective ring-D type (24) and the protective ring-E type (25) are sequentially installed along with the increase of the installation height of a load, wherein firstly, the operation is convenient for safety and secondly, the weight is reduced;
4 holes are reserved in the protective ring-B type (21), and the holes are used for adjusting the height and wiring devices such as a vibration exciter (1), a laser vibration meter (17) and the like;
a hole is reserved in the protective ring-C1 type (22) so as to fix the long connecting rod (16) and the vibration exciter loading rod (3);
the spring (9) has 2 functions: firstly, when the vibration generator is static, the vibration generator bears the load weight, and the small vibration source is prevented from being crushed; and secondly, under the condition of dynamic excitation, a driving force similar to the load weight is provided.
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| CN202010156591.7A CN111238753B (en) | 2020-03-09 | 2020-03-09 | Small vibration source and large load vertical vibration experiment table convenient to assemble and disassemble |
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| CN111238753B CN111238753B (en) | 2020-12-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112098027A (en) * | 2020-09-17 | 2020-12-18 | 北京航空航天大学 | Vibration testing device and method special for thermal field emission electron gun |
| CN113998160A (en) * | 2021-11-10 | 2022-02-01 | 中国科学院长春光学精密机械与物理研究所 | Integrated gravity unloading mechanism |
| CN117168744A (en) * | 2023-11-03 | 2023-12-05 | 明利亚(广州)照明科技有限公司 | Shock-resistant test board for lighting lamp |
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| CN112098027A (en) * | 2020-09-17 | 2020-12-18 | 北京航空航天大学 | Vibration testing device and method special for thermal field emission electron gun |
| CN112098027B (en) * | 2020-09-17 | 2021-10-08 | 北京航空航天大学 | Vibration testing device and method special for thermal field emission electron gun |
| CN113998160A (en) * | 2021-11-10 | 2022-02-01 | 中国科学院长春光学精密机械与物理研究所 | Integrated gravity unloading mechanism |
| CN113998160B (en) * | 2021-11-10 | 2024-04-19 | 中国科学院长春光学精密机械与物理研究所 | Integrated gravity unloading mechanism |
| CN117168744A (en) * | 2023-11-03 | 2023-12-05 | 明利亚(广州)照明科技有限公司 | Shock-resistant test board for lighting lamp |
| CN117168744B (en) * | 2023-11-03 | 2024-01-23 | 明利亚(广州)照明科技有限公司 | Shock-resistant test board for lighting lamp |
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