CN110631793A - Multi-degree-of-freedom vibration table based on cam mechanism - Google Patents
Multi-degree-of-freedom vibration table based on cam mechanism Download PDFInfo
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- CN110631793A CN110631793A CN201910978558.XA CN201910978558A CN110631793A CN 110631793 A CN110631793 A CN 110631793A CN 201910978558 A CN201910978558 A CN 201910978558A CN 110631793 A CN110631793 A CN 110631793A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
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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
- G01M7/06—Multidirectional test stands
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Abstract
The invention belongs to the field of mechanical vibration, and particularly relates to a multi-degree-of-freedom vibration table based on a cam mechanism. The device comprises a base, a lower vibration platform, a lower sliding rod, an upper vibration platform, an upper sliding rod, a lower power mechanism and an upper power mechanism; tracks are arranged on one side of the lower surfaces of the lower vibration platform and the upper vibration platform, pulleys are arranged at the upper ends of the lower sliding rod and the upper sliding rod and are respectively in sliding fit with the tracks on the lower surfaces of the lower vibration platform and the upper vibration platform, and the lower ends of the lower sliding rod and the upper sliding rod are respectively matched with the base and the upper vibration platform; the other ends of the lower vibration platform and the upper vibration platform respectively reciprocate up and down under the driving of a lower power mechanism and an upper power mechanism; the upper vibration platform is vertical to the lower vibration platform. The invention enables the upper vibration platform to realize the vibration at any angle through the pitching motion in two directions; and because of using the cam mechanism, the invention is succinct in construction, dismantle convenient, if study the movement of different forms, only need to change the part of the cam mechanism.
Description
Technical Field
The invention belongs to the field of mechanical vibration, and particularly relates to a multi-degree-of-freedom vibration table based on a cam mechanism.
Background
The vibration platform is widely applied to various fields of entertainment, culture and education, mechanical manufacturing and the like. The existing multi-degree-of-freedom vibration mechanical structure is complex in vibration implementation mode, complex in installation and high in maintenance cost.
The invention discloses a multi-degree-of-freedom electro-hydraulic vibration table which is called as a Chinese patent publication No. CN107367366B and is entitled as 2019, 6 and 25, and the application discloses a hydraulically-driven vibration table capable of rotating at various angles. The disadvantages that the cost is expensive because of adopting a plurality of sets of hydraulic systems; the invention discloses a three-degree-of-freedom magnetic vibration table which is named as a Chinese patent publication No. CN203350009U with the publication date of 2013, 12 and 18, and is driven by magnetic force. The vibration platform and the base are connected through the spring, so that the vibration platform is easily influenced by the elastic force of the spring, the accuracy is low, the vibration platform is influenced by the structure, and the deflection at a larger angle cannot be realized; chinese patent publication No. CN208018898U, the granted announcement date is 2018, 10 and 30, the name of the utility model is a three-degree-of-freedom vibration platform, and this application discloses a multi-degree-of-freedom vibration platform driven by a plurality of motors and relying on a transmission mechanism to complete vibration at different angles. The defects are that more motors are needed, the structure is more complex, and the maintenance is difficult.
In conclusion, the existing multi-degree-of-freedom vibration platform has the problems of complex structure, low accuracy, incapability of realizing deflection in a larger angle and the like.
Disclosure of Invention
The invention aims to provide a multi-degree-of-freedom vibration table based on a cam mechanism.
The technical solution for realizing the purpose of the invention is as follows:
a multi-degree-of-freedom vibration table based on a cam mechanism comprises a base, a lower vibration platform, a lower sliding rod, an upper vibration platform, an upper sliding rod, a lower power mechanism and an upper power mechanism;
tracks are arranged on one side of the lower surfaces of the lower vibration platform and the upper vibration platform, pulleys are arranged at the upper ends of the lower sliding rod and the upper sliding rod and are respectively in sliding fit with the tracks on the lower surfaces of the lower vibration platform and the upper vibration platform, and the lower ends of the lower sliding rod and the upper sliding rod are respectively in sliding fit with the base and the upper vibration platform; the other ends of the lower vibration platform and the upper vibration platform respectively reciprocate up and down under the driving of a lower power mechanism and an upper power mechanism; the direction of the upper vibration platform is vertical to the direction of the lower vibration platform, and the pitching motion in two directions enables the upper vibration platform to realize vibration at any angle.
Furthermore, the lower vibration platform and the upper vibration platform are driven by a cam mechanism to reciprocate up and down respectively.
Furthermore, the two sets of cam mechanisms are provided, each set of cam mechanisms comprises two parallel and vertically arranged supports, the upper parts of the supports are provided with vertically arranged sliding grooves, the lower part between the two supports is provided with a cam, the upper part of the cam is provided with a circular wheel, the shaft of the cam is connected with the shaft of the power mechanism, the shaft of the circular wheel is slidably arranged in the sliding grooves of the supports, and the circular wheel shaft at the other side opposite to the power mechanism are connected with the vibration platform through a hinge mechanism, so that the vibration platform is driven to reciprocate up and down.
Furthermore, the hinge mechanism comprises a rotating shaft connected with the vibration platform and a fixed shaft hinged with the rotating shaft, and the fixed shaft is connected with the circular wheel shaft.
Furthermore, the upper power mechanism and the lower power mechanism respectively comprise a vibrating table motor and a vibrating table conveying device, and the vibrating table motor is connected with the shaft of the cam through the vibrating table conveying device so as to drive the cam to rotate.
Further, the track arranged on one side of the lower surfaces of the lower vibration platform and the upper vibration platform is a sliding groove
Compared with the prior art, the invention has the remarkable advantages that:
(1) the vibration platform separates the vibration in two directions, the multi-degree-of-freedom motion of the vibration platform is completed by overlapping two vibration platforms, one platform completes pitching motion, the other platform performs azimuth motion by depending on the platform performing the pitching motion, and the motion in the two directions is overlapped, so that the vibration of the upper vibration platform at any angle can be realized; a set of power device, a sliding rod and a vibration platform are placed on a base, the vibration platform can complete pitching motion at the moment, the vibration platform is used as the base, another set of vibration platform system is installed on the platform, the newly installed vibration platform faces 90 degrees to the initial vibration platform, and the two sets of vibration platforms are combined to realize motion in any direction;
(2) the cam mechanism enables the vibration table to have strong controllability, the vibration track can be predicted, and only the cam or the round wheel needs to be replaced to realize the vibration effect of different tracks;
(3) the utility model provides a vibration platform's basic motion is realized through cam mechanism, and platform one end is connected on cam mechanism's vertical motion mechanism, and the other end is even on the slide bar that can slide, and during cam end vertical motion, the platform can slide on the slide bar, realizes the change of angle. Because the cam mechanism is used, the invention has the characteristics of simple structure and convenient disassembly, and only the parts of the cam mechanism need to be replaced if the movement of different forms is researched.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a multi-degree-of-freedom vibration table of the invention.
Fig. 2 is a schematic view of the structure of the hinge to which the vibration platform of the present invention is attached.
Fig. 3 is a schematic view of the structure of the sliding rod of the present invention.
Description of reference numerals:
1-base, 2-1-lower vibration table, 2-2-upper vibration table, 3-1-lower slide, 3-2-upper slide, 4-1-lower base, 4-2-upper base, 5-1-lower vibration table motor, 5-2-upper vibration table motor, 6-1-lower vibration table conveyor, 6-2-upper vibration table conveyor, 7-1-lower vibration table support I, 7-2-lower vibration table support II, 7-3-upper vibration table support I, 7-4-lower vibration table support II, 8-1-lower circular wheel, 8-2-upper circular wheel, 9-1-lower cam, 9-2-upper cam, 10-1-lower round wheel shaft, 10-2-upper round wheel shaft, 11-1-lower hinge structure, 11-2-upper hinge structure, 21-fixed shaft, 22-rotating shaft, 23-vibration platform, 24-vibration platform sliding groove, 31-sliding rod part and 32-sliding rod pulley.
Detailed Description
The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.
As shown in the figures 1-3, the multi-degree-of-freedom vibration table based on the cam mechanism comprises a lower base 4-1, a lower sliding rod 3-1, a lower vibration table motor 5-1, a lower vibration table conveying device 6-1, a lower vibration table left support 7-1 and a lower vibration table right support 7-2 which are sequentially arranged on the lower base 4-1, the lower vibration table motor 5-1 is connected with the lower vibration table conveying device 5-1, the lower vibration table conveying device 6-1 is connected with the lower vibration table left support 7-1, one side of the lower vibration table conveying device 6-1 is connected with a lower vibration table motor shaft, the other side of the lower vibration table conveying device is connected with a cam shaft on the lower vibration table left support 7-1, and the motor can drive the cam to rotate.
The bracket is provided with a bracket groove, a lower circular wheel shaft 10-1 moves on a left bracket 7-1 of the lower vibration table and a right bracket 7-2 of the lower vibration table along the direction of the groove, the lower circular wheel shaft 10-1 penetrates through a lower circular wheel 8-1, so that the lower circular wheel 8-1 and the lower circular wheel shaft 10-1 move together, the lower circular wheel 8-1 is tangent to a lower cam 9-1 in real time, the lower circular wheel 8-1 is driven to rotate when the lower cam 9-1 rotates, and the lower circular wheel 8-1 drives the lower circular wheel shaft 10-1 to move in the groove. The lower circular wheel shaft 10-1 is connected with the lower hinge structure 11-1. The lower hinge structure comprises a fixed shaft 21, a rotating shaft 22 and a vibration platform, wherein the fixed shaft 201 moves along with the round axles (the lower round axle 10-1 and the upper round axle 10-2), the fixed shaft 21 is connected with the rotating shaft 22, the rotating shaft is connected with the vibration platform, the vibration platform 203 is provided with a vibration platform sliding groove 204, a sliding rod pulley 302 slides in the groove, a sliding rod part 301 is fixed, one end of the lower vibration platform 2-1 is connected to the lower hinge structure 11-1, the other end of the lower vibration platform is connected to the lower sliding rod 3-1, and pitching motion is carried out under the action of gravity. A lower vibration table system (comprising a lower base 4-1, a lower vibration table motor 5-1, a lower vibration table conveying device 6-1, a lower vibration table left support 7-1, a lower vibration table right support 7-2, a lower circular wheel 8-1, a lower cam 9-1, a lower circular wheel shaft 10-1, a lower hinge structure 11-1, a lower vibration platform 2-1 and a lower sliding rod 3-1) is similar to the lower vibration table 3-1, but the upper vibration platform 2-2 is vertical to the lower vibration platform 2-1, and the upper vibration platform 2-2 can realize vibration at any angle through pitching motion in two directions.
The working process is as follows:
the lower vibrating table motor 5-1 starts to work, the lower cam 7-1 is driven to rotate by the lower vibrating table conveying device 6-1, the lower round wheel 8-1 is tangent to the lower cam 7-1 under the action of gravity, the lower round wheel 8-1 moves along the groove direction as the lower cam 7-1 rotates and the lower round wheel shaft 10-1 is fixed in the groove, the lower round wheel 8-1 is connected with the lower hinge structure 11-1, the height of the lower vibrating platform 2-1 close to the lower cam 7-1 side is determined by the tail end of the lower hinge structure 11-1 and can be changed up and down, and the height of the lower vibrating platform 2-1 far away from the lower cam 7-1 side is determined by the top end of the lower sliding rod 3-1 and is fixed. One end of the vibration platform is fixed, and the other end of the vibration platform moves up and down, so that unidirectional pitching motion of the vibration platform is realized. The vibration principle and the working process of the upper vibration platform 2-2 are the same as those of the lower vibration platform 2-1, the vibration direction is vertical to the direction of the lower vibration platform 2-1, the two vibration directions are superposed, and the upper vibration platform 2-2 can realize the vibration at any angle.
The invention can more intuitively and simply adjust the angle of the platform by using the cam mechanism, and different vibration modes can be realized by replacing parts of the cam mechanism. The power device is composed of four parts of a base, a motor, a transmission device and a cam mechanism, and the cam mechanism is composed of a frame, a cam, a driven piece, a bearing and the like. The motor, the conveying device and the rack are sequentially arranged on the base, the conveying device is connected with the motor and a bearing of the cam, and the rack is provided with a hole and a groove for restraining the positions of the cam and the driven piece. After the motor is started, the cam rotates, and the driven piece moves in the direction vertical to the base according to the movement of the cam by means of gravity.
Claims (6)
1. A multi-degree-of-freedom vibration table based on a cam mechanism is characterized by comprising a base (1), a lower vibration platform (2-1), a lower sliding rod (3), an upper vibration platform (2-2), an upper sliding rod (3-2), a lower power mechanism and an upper power mechanism;
tracks are arranged on one side of the lower surfaces of the lower vibration platform (2-1) and the upper vibration platform (2-2), pulleys are arranged at the upper ends of the lower sliding rod (3-1) and the upper sliding rod (3-2) and are respectively in sliding fit with the tracks on the lower surfaces of the lower vibration platform (2-1) and the upper vibration platform (2-2), and the lower ends of the lower sliding rod (3-1) and the upper sliding rod (3-2) are respectively in sliding fit with the base (1) and the upper vibration platform (2-2); the other ends of the lower vibrating platform (2-1) and the upper vibrating platform (2-2) respectively reciprocate up and down under the driving of a lower power mechanism and an upper power mechanism; the direction of the upper vibration platform (2-2) is vertical to the direction of the lower vibration platform (2-1), and the pitching motion in two directions enables the upper vibration platform (2-2) to realize the vibration at any angle.
2. Vibrating table according to claim 1, characterised in that the lower vibrating table (2-1) and the upper vibrating table (2-2) are driven by cam mechanisms to reciprocate up and down, respectively.
3. The vibrating table as claimed in claim 2, wherein the cam mechanisms are provided in two sets, each set comprises two parallel and vertically arranged brackets, the upper parts of the brackets are provided with vertically arranged sliding grooves, the lower part between the two brackets is provided with a cam, the upper part of the cam is provided with a circular wheel, the shaft of the cam is connected with the shaft of the power mechanism, the shaft of the circular wheel is slidably arranged in the sliding grooves of the brackets, and the circular wheel and the shaft of the circular wheel on the other side opposite to the power mechanism are connected with the vibrating platform through a hinge mechanism, so that the vibrating platform is driven to reciprocate up and down.
4. A vibration table according to claim 3, wherein the hinge mechanism comprises a rotary shaft connected to the vibration table, and a fixed shaft hinged to the rotary shaft, the fixed shaft being connected to the circular hub.
5. The vibration table of claim 3, wherein the upper power mechanism and the lower power mechanism comprise a vibration table motor and a vibration table transmission device, respectively, and the vibration table motor is connected with the shaft of the cam through the vibration table transmission device so as to drive the cam to rotate.
6. Vibrating table according to claim 1, characterised in that the tracks provided on the side of the lower surface of the lower vibrating table (2-1) and the upper vibrating table (2-2) are sliding grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978558.XA CN110631793A (en) | 2019-10-15 | 2019-10-15 | Multi-degree-of-freedom vibration table based on cam mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978558.XA CN110631793A (en) | 2019-10-15 | 2019-10-15 | Multi-degree-of-freedom vibration table based on cam mechanism |
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| CN110631793A true CN110631793A (en) | 2019-12-31 |
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| CN201910978558.XA Pending CN110631793A (en) | 2019-10-15 | 2019-10-15 | Multi-degree-of-freedom vibration table based on cam mechanism |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515662A (en) * | 2013-10-08 | 2015-04-15 | 郑州大学 | Amplitude continuously adjustable mechanical shaker |
| CN206638975U (en) * | 2017-04-07 | 2017-11-14 | 沈阳工业大学 | Three Degree Of Freedom layer-stepping tilter |
| CN208255377U (en) * | 2018-06-19 | 2018-12-18 | 赵治国 | Pure electric automobile motor guaranteed performance test platform |
| CN109238609A (en) * | 2018-09-19 | 2019-01-18 | 高新兴科技集团股份有限公司 | test platform |
| CN208736647U (en) * | 2018-11-01 | 2019-04-12 | 江西量子新能源科技有限公司 | Vibration test table is used in a kind of production of lithium ion battery |
-
2019
- 2019-10-15 CN CN201910978558.XA patent/CN110631793A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515662A (en) * | 2013-10-08 | 2015-04-15 | 郑州大学 | Amplitude continuously adjustable mechanical shaker |
| CN206638975U (en) * | 2017-04-07 | 2017-11-14 | 沈阳工业大学 | Three Degree Of Freedom layer-stepping tilter |
| CN208255377U (en) * | 2018-06-19 | 2018-12-18 | 赵治国 | Pure electric automobile motor guaranteed performance test platform |
| CN109238609A (en) * | 2018-09-19 | 2019-01-18 | 高新兴科技集团股份有限公司 | test platform |
| CN208736647U (en) * | 2018-11-01 | 2019-04-12 | 江西量子新能源科技有限公司 | Vibration test table is used in a kind of production of lithium ion battery |
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Application publication date: 20191231 |