CN109752176B - Self-balancing tilting and swinging test bed - Google Patents
Self-balancing tilting and swinging test bed Download PDFInfo
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- CN109752176B CN109752176B CN201910176237.8A CN201910176237A CN109752176B CN 109752176 B CN109752176 B CN 109752176B CN 201910176237 A CN201910176237 A CN 201910176237A CN 109752176 B CN109752176 B CN 109752176B
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Abstract
The invention provides a self-balancing tilting and swinging test bed which comprises a bed body, wherein the bed body comprises a frame, a table top arranged on the frame, a decoupling mechanism for connecting the frame and the table top, the table top is rotationally connected with the decoupling mechanism, the test bed also comprises a plurality of actuators capable of driving the table top in the vertical direction, the upper end parts of the actuators are rotationally connected with the table top, and a plurality of weight balancing devices with adjustable mass and quantity are hung on the table top. According to the self-balancing tilting and swinging test bed, the balancing weights are arranged around the table top in series through the suspension ropes, and the weight of the balancing weights can be automatically changed according to the table top position during the test, so that acting forces generated by a test piece during tilting and swinging tests are automatically balanced, tilting and swinging tests of a large-sized test piece can be realized through smaller output of the actuator, and energy consumption is reduced.
Description
Technical Field
The invention relates to the field of mechanical environment test equipment, in particular to an inclined swinging test bed suitable for large-scale test piece tests.
Background
The tilting and swinging test bed is mainly used for performing tilting and swinging tests. Tilting and swaying are a basic environment for mechanical, electrical and electronic products mounted on water equipment (including ships, seaplanes and offshore oil exploration platforms), and various mechanical, electrical and electronic products mounted on water equipment are subjected to the environment. Besides the tilting and swinging on the ship, the tilting and swinging test is needed for other products with high requirements on the installation precision, the working precision and the electronic instrument error under the tilting and swinging environment.
Tilting and swinging test bed, the main structure of the bed body comprises: table top, decoupling mechanism, actuator, frame, etc. The table top is arranged above the frame through the decoupling mechanism, and the actuator is connected with the frame and the table top, so that the table top can rotate around the axis of the decoupling mechanism in multiple degrees of freedom, and the tilting and swinging test function is realized.
Along with the improvement of the requirements of scientific research and production on reliability, the volume and the mass of the test piece are continuously increased, so that the acting force generated by the test piece in the test process is larger and larger, and the requirements on the strength of the table body of the tilting and swinging test table are higher and higher. Because of the structure of the table body, the strength of the tilting and swinging test table cannot be infinitely increased, so that the current tilting and swinging test table is only suitable for tilting and swinging tests of small and medium-sized test pieces.
Therefore, developing a tilt and swing test stand suitable for performing a tilt and swing test on a large test piece has long been a problem that has been desired to be solved in the industry.
Disclosure of Invention
The invention aims to provide a self-balancing tilting and swinging test bed.
In order to solve the technical problems, the invention provides a self-balancing tilting and swinging test bed which comprises a bed body, wherein the bed body comprises a rack, a table top arranged on the rack, a decoupling mechanism for connecting the rack and the table top, the table top is rotationally connected with the decoupling mechanism, the test bed also comprises a plurality of actuators capable of driving the table top in the vertical direction, the upper end parts of the actuators are rotationally connected with the table top, and the table top is further hung with a plurality of weight balancing devices with adjustable mass and quantity.
Preferably, the counterweight device comprises a plurality of counterweights arranged along the up-down direction and a suspension cable for connecting the counterweights in series. The number and the quality of the balancing weights can be adjusted as required, and the balancing weights at the uppermost side are also connected with the table top through suspension ropes.
Preferably, the decoupling mechanism is rotatably connected with the table top through a cross shaft structure with multiple degrees of freedom.
Preferably, a plurality of balancing weights of the balancing device are detachably connected through the suspension rope. In order to meet different test pieces, the balancing weights with different qualities can be replaced through disassembly, so that the best effect is achieved.
Preferably, suspension points for connecting the suspension ropes are respectively arranged on the upper end face and the lower end face of the balancing weight.
Preferably, the balancing weight is provided with a cavity for placing the suspension cable. When the balancing weights are in the landing state, the suspension ropes between two adjacent balancing weights in the landing state are accommodated in the cavity of the balancing weight at the lower side.
Preferably, a plurality of the counterweight devices are respectively positioned around the table top. The number of the counterweight devices can also be adjusted according to different test pieces.
Preferably, the frame is mounted on a foundation.
Preferably, the test bench has a horizontal balance state and an inclined balance state, when the test bench is in the horizontal balance state, the table top is in a horizontal position, and at least a part of the balancing weights in each balancing device are in a hanging state.
The suspended state is a state that the lower end face of the balancing weight is not contacted with other balancing weights or foundations under the action of a suspension rope on the upper end face of the balancing weight. The landing state is a state that the balancing weight is not affected by suspension ropes on the upper end face of the balancing weight, and the lower end face of the balancing weight is contacted with other balancing weights or foundations.
According to the self-balancing tilting and swinging test bed, the balancing weights are arranged around the table top in series through the suspension ropes, and the weight of the balancing weights can be automatically changed according to the table top position during the test, so that acting forces generated by a test piece during tilting and swinging tests are automatically balanced, tilting and swinging tests of a large-sized test piece can be realized through smaller output of the actuator, and energy consumption is reduced.
Drawings
FIG. 1 is a schematic view of a self-balancing tilting and swinging test stand according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the operation of a self-balancing tilt-swing test stand according to a preferred embodiment of the present invention;
fig. 3 (a), (b) and (c) are schematic diagrams of the working process of the self-balancing tilting and swinging test bed for performing unbalanced loading installation of a large test piece according to a preferred embodiment of the invention.
1: A test piece; 2: a table body; 21: a table top; 22: a decoupling mechanism; 23: an actuator; 24: a frame; 3: a suspension cable; 4: balancing weight; 5: and (3) foundation.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Fig. 1 is a schematic view of a self-balancing tilting and swinging test stand according to a preferred embodiment of the present invention. The table top 21 is arranged above the frame 24 through the decoupling mechanism 22, and the actuator 23 is connected with the frame 24 and the table top 21 to form a table body 2 and is fixed on the foundation 5. The periphery of the table top 21 is provided with a suspension rope 3, the suspension rope 3 is connected with a plurality of balancing weights 4, and the balancing weights 4 are connected by the suspension rope 3. When the table body 2 is in a zero position, namely in a horizontal balance position, the table surface 21 is kept horizontal, and the number of the balancing weights 4 with the two ends in a suspended state is equal to the total mass, so that balance is realized. The test piece 1 is mounted on a table top 21. The number and the quality of the balancing weights 4 can be adjusted according to the requirement, and the balancing weights 4 at the uppermost side are also connected with the table top 21 through the suspension ropes 3. The decoupling mechanism 22 is rotatably connected with the table top 21 through a cross shaft structure with multiple degrees of freedom. Through the detachable connection of suspension cable between a plurality of balancing weights 4, in order to satisfy different test pieces 1, can change balancing weights 4 of different masses through dismantling to reach the effect best.
Referring to fig. 2, a schematic diagram of a self-balancing tilting and swinging test stand according to a preferred embodiment of the present invention is shown. When the table body 2 works, under the action of the actuator 23, the table top 21 rotates through the decoupling mechanism 22: the end I of the table 21 is lowered and the end II is raised. The center of gravity m of the test piece 1 is offset from the center of the table body 2 and is offset toward the end i so that the force generated by the test piece 1 is applied to the end i of the table top 21. The I end of the table 21 lowers to change the weight 4, which is originally in a suspended state, to a landing state one by one. The II end is lifted, so that the balancing weights 4 which are originally in a landing state are converted into a hanging state one by one. At this time, the tension generated by the balancing weight 4 at the end II is gradually greater than the tension generated by the balancing weight 4 at the end I, and the tension is counteracted with the acting force generated by the test piece 1 on the table top 21, so that automatic balance is realized. The balancing weight 4 is provided with a cavity for placing the suspension rope 3. When the weights 4 are in the landed state, the suspension wires 3 between two adjacent landed weights 4 are accommodated in the cavities of the lower weights 4.
FIG. 3 is a schematic diagram showing the operation of the self-balancing tilting swing test stand for unbalanced loading installation of large test pieces according to a preferred embodiment of the present invention. In actual test work, the test piece 1 is in unbalanced load installation on the table top 21, namely the center of gravity m of the test piece 1 is not coincident with the center of the table body 2 and is close to the II end position of the table top 21. At this time, the weights of the counterweights 4 at two sides are required to be adjusted, so that the total weight of the counterweights 4 with the end at the hanging state is greater than the total weight of the counterweights 4 with the end at the hanging state, and when the zero position is realized, the test piece 1 and the table top 21 are in a balanced state, as shown in fig. 3 (a).
When the platform body 2 works, when the end I descends and the end II ascends, the gravity center m of the test piece 1 deviates from the end II to the end I through the center of the platform body 2. The balancing weights 4 of which the ends I are originally in a suspension state are converted into a landing state one by one; the balancing weights 4 of which the II ends are originally in a landing state are converted into a suspension state one by one, as shown in the figure 3 (b).
When the end I rises and the end II descends, the gravity center m of the test piece 1 shifts towards the end II. The balancing weights 4 of which the ends I are originally in a landing state are converted into a suspension state one by one; the weights 4 at the end II, which are originally in a suspended state, are converted into a landing state one by one, as shown in fig. 3 (c). Therefore, in the whole working process, the acting force of the balancing weight 4 on the table top 21 and the acting force of the test piece 1 on the table top 21 are mutually offset, so that the automatic balance of unbalanced load installation of the large-scale test piece is realized.
In this embodiment, multiple groups of serially connected balancing weights 4 can be arranged around the table top according to the mass and the gravity center position of the test piece 1.
According to the embodiment, the counter weights 4 are arranged around the table top 21 in series by the aid of the suspension ropes 3, and the counter weight mass can be automatically changed according to the position of the table top 21 during testing, so that acting force generated by the test piece 1 during tilting and swinging tests is automatically balanced, tilting and swinging tests of large-sized test pieces can be realized by small output of the actuator, energy consumption is reduced, and the device is particularly suitable for tilting and swinging tests of unbalanced loading installation of the large-sized test pieces.
The above-described embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention. The protection scope of the invention is subject to the claims.
Claims (7)
1. The self-balancing tilting and swinging test bed comprises a bed body, wherein the bed body comprises a frame, a table top arranged on the frame, a decoupling mechanism for connecting the frame and the table top, the table top is rotationally connected with the decoupling mechanism, the test bed also comprises a plurality of actuators capable of driving the table top in the vertical direction, and the upper end parts of the actuators are rotationally connected with the table top, and the test bed is characterized in that a plurality of weight balancing devices with adjustable mass and quantity are hung on the table top; the counterweight device comprises a plurality of counterweights arranged along the up-down direction and a suspension cable for connecting the counterweights in series; the balancing weight is provided with a cavity for placing the suspension cable in a coiled manner; the suspension cable between two adjacent floor-mounted counterweights is received in the cavity of the lower counterweight.
2. The self-balancing tilting and rocking test stand according to claim 1, wherein the decoupling mechanism is rotatably connected to the table top via a cross-shaft structure with multiple degrees of freedom.
3. The self-balancing tilt and sway test stand of claim 1, wherein the plurality of counterweights of the counterweight device are detachably connected by the suspension cable.
4. A self-balancing tilting and swinging test stand according to claim 3, wherein suspension points for connecting the suspension ropes are respectively arranged on the upper end face and the lower end face of the balancing weight.
5. The self-balancing tilt and sway test stand of claim 1 wherein a plurality of said weight means are located around said deck.
6. A self-balancing tilt and roll test stand according to claim 1, wherein the frame is mounted on a foundation.
7. A self-balancing tilt rocking test stand according to claim 1, wherein the test stand has a horizontal equilibrium state and a tilt equilibrium state, and wherein the table top is in a horizontal position when the test stand is in the horizontal equilibrium state, and wherein at least a portion of each of the weight means is in a suspended state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910176237.8A CN109752176B (en) | 2019-03-08 | 2019-03-08 | Self-balancing tilting and swinging test bed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910176237.8A CN109752176B (en) | 2019-03-08 | 2019-03-08 | Self-balancing tilting and swinging test bed |
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| CN109752176A CN109752176A (en) | 2019-05-14 |
| CN109752176B true CN109752176B (en) | 2024-05-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113501248A (en) * | 2021-07-16 | 2021-10-15 | 杭州行星传动设备有限公司 | Inclined table type feeding mechanism for speed reducer assembly parts |
| CN114427318B (en) * | 2021-12-31 | 2024-05-17 | 国网江苏省电力有限公司建设分公司 | Electric pole and torque difference automatic adjustment method thereof |
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| CN201903455U (en) * | 2010-11-17 | 2011-07-20 | 西北机器有限公司 | Inclination swing testing system |
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| CN201933962U (en) * | 2010-12-31 | 2011-08-17 | 浙江理想门业制造有限公司 | Balancing device for sectional counterweight of industrial door |
| CN103321614A (en) * | 2013-07-11 | 2013-09-25 | 华北电力大学 | Swing-type double-mule-head automatic-balancing commutator driving pumping unit |
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| EP3081523B1 (en) * | 2015-04-15 | 2018-06-27 | Airbus Defence and Space, S.A. | Self-balanced apparatus for hoisting and positioning loads, with six degrees of freedom |
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2019
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| CN105702117A (en) * | 2016-04-29 | 2016-06-22 | 燕山大学 | Six-axis-driven three-degree-of-freedom static load balancing large parallel movement simulation platform |
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