CN102645367B - Torsional rigidity adjusting device - Google Patents

Abstract

The invention relates to the field of mechanical transmission, in particular to the field of design and testing of a mechanical transmission system. The present invention is a torsional rigidity adjusting device, comprising a sub-end plate (2), a female end plate (1) installed in parallel with a flexible rod (3), a sub-end plate (2) and a female end plate (1) installed in parallel, Extend the boss (5) of the sub-end plate (2) into the groove (6) in the middle of the ring boss (7) of the female end plate, and the boss (5) and the groove (6) are coaxially matched with each other, Ensure that the sub-end plate (2) and the female end plate (1) can rotate coaxially, and the flexible rod (3) is fixed in the slot (4) corresponding to the sub-end plate (2) and the female end plate (1). Two parallel installations. Adjustment of torsional stiffness can be realized by changing the installation number and type of flexible rods (3), which is simple and reliable, easy to process, easy to use and operate, easy to realize functions, small in size, and applicable to various environments, thereby improving design and test efficiency , Simplify the operation process, reduce the test cost, shorten the design and test cycle.

Description

A torsional rigidity adjustment device

technical field

The invention relates to the field of mechanical transmission, in particular to the field of design and testing of a mechanical transmission system.

Background technique

In modern design and testing, problems are often encountered regarding the torque transmission of the system and the adjustment of its torsional stiffness. Torsion springs or torsion tubes are usually used in engineering. Torsion springs are generally standard parts. The volume and torsional stiffness cannot be changed. The torsional stiffness can only be adjusted by replacing the torsion spring or connecting multiple sets of torsion springs in series. The installation space is tight and the replacement process is cumbersome. ; Torque tubes are generally system components, and their design, calibration and replacement require a lot of manpower and material resources, and a long cycle. Such design methods are not advocated in the design. Especially in the engineering design and test stage, it is usually necessary to adjust and test the stiffness of the torque transmission system multiple times to obtain a stiffness value that can meet the system requirements, thereby obtaining the torsional stiffness value range of the system components, as the design of the system components Therefore, a device that can transmit torque and easily adjust torsional stiffness is needed to improve design efficiency, reduce design cost, and shorten design cycle.

In addition, in the patent application document with application number 200610147349, a helical torsion spring with variable stiffness is disclosed, which is composed of at least two helical torsion springs with equal stiffness. Connecting feet, the diameter of any one of the constant stiffness helical torsion springs is smaller than or larger than any other constant stiffness helical torsion springs, the constant stiffness torsion springs are coaxially fitted, and the connecting feet of any one of the constant stiffness helical torsion springs are connected to any other The connecting feet of the equal-stiffness helical torsion springs form an included angle greater than 0 degrees. When working, the helical torsion springs with small diameter and low stiffness work first, and the rest of the helical torsion springs work in order of stiffness levels, and a characteristic curve of variable stiffness can be obtained. . This kind of variable stiffness torsion spring can only change the spring stiffness after a certain torsional deformation, and cannot adjust the torsional stiffness according to actual requirements, and this kind of variable stiffness spring is made of equal stiffness torsion springs. For a large range of stiffness changes, multiple helical torsion springs must be nested, and the variable stiffness springs are bulky and cannot be used in a small space.

Contents of the invention

The purpose of the present invention is to overcome the problems of low design and test efficiency, cumbersome process, high cost and long cycle due to the absence of equipment that can transmit torque and easily adjust torsional stiffness in the prior art

Technical solution of the present invention: in order to achieve the above purpose, the present invention processes a sub-end plate 2, a female end plate 1 and a flexible rod 3, the sub-end plate 2 is in the shape of a circular frustum, and a circular boss 5 is processed in the middle, and the female end The plate is frustum-shaped, with an annular boss 7 in the middle, and a circular groove 6 in the middle of the annular boss 7. The boss 5 and the groove 6 are coaxially matched, and the flexible rod 3 is fixed on the sub-end plate 2 and the female end plate 1. corresponding card slot 4.

The torsional rigidity adjusting devices can be connected in pairs and used in sequence.

The positive effects produced by the present invention: the present invention realizes torque transmission and torsional rigidity at the same time by adding multiple groups of flexible rods that can be easily disassembled between two end plates, which is simple and reliable, easy to process, easy to use and operate, and easy to function Realization, small size, applicable to various environments, thereby improving design and test efficiency, simplifying operation procedures, reducing test costs, and shortening design and test cycles.

Description of drawings

Figure 1 is a schematic diagram of the structure of the torsional stiffness adjustment device;

Figure 2 is a schematic diagram of the structure of the female end plate;

Figure 3 is a schematic diagram of the sub-end plate structure;

Among them, 1 is the female end plate, 2 is the sub-end plate, 3 is the flexible rod, 4 is the card slot, and 5 is the boss

6 is a groove, and 7 is an annular boss.

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

This embodiment is a torsional rigidity adjustment device, processing a sub-end plate 2, a female end plate 1 and a flexible rod 3, the sub-end plate 2 is in the shape of a circular frustum, and a circular boss 5 is processed in the middle, and the female end plate is Conical shape, with an annular boss 7 in the middle, and a circular groove 6 in the middle of the annular boss 7. The boss 5 and the groove 6 are coaxially matched, and the flexible rod 3 is fixed on the corresponding part of the sub-end plate 2 and the female end plate 1. Inside card slot 4.

The number of flexible rods 3 is the same as the draw-in groove 4 on the same child and female end plates in cross-sectional shape.

When in use, the sub-end plate 2 is installed parallel to the female end plate 1, and the boss 5 of the sub-end plate 2 is inserted into the groove 6 in the middle of the annular boss 7 of the female end plate, and the boss 5 and the groove 6 are coaxial with each other Cooperate. The flexible rods 3 are embedded in the slots 4 corresponding to the female end plates and the female end plates and fixed, and are installed in parallel. The distance between the female end plate 1 and the sub-end plate 2 remains unchanged due to the fixed position of the torque transmission line system. The flexible rod 3 is bent and deformed due to the action of the torque. Since its two ends are fixed on the female end plate 1 and the sub-end plate 2, Therefore, it will also produce tensile deformation, which reduces the amount of bending deformation of the flexible rod 3 under the same torque, thereby improving the torsional rigidity of the present invention, and is especially suitable for use under heavy loads.

The torsional stiffness adjustment device is connected in series to the torque transmission system, and the torsional stiffness of the system can be easily adjusted by adding or removing flexible rods 3, changing the number of flexible rods 3 or replacing flexible rods 3 with different cross-sections. Purpose.

Multiple sets of torsional stiffness adjustment devices can be used in series. The installation method of each stiffness adjustment device is exactly the same as that in Embodiment 1, and multiple sets of torsional stiffness adjustment devices are connected in sequence, thereby increasing the adjustment range of system stiffness.

Claims (2)

1. a torsional rigidity regulating device, comprise sub-end plate (2), female end plate (1) and flexibility bar (3), it is characterized in that: sub-end plate (2) is truncated cone-shaped, centre is processed with round boss (5), female end plate (1) is truncated cone-shaped, there is annular boss (7) centre, there is circular groove (6) at annular boss (7) middle part, described round boss (5) and groove (6) coaxial cooperation, it is interior also fixing that flexibility bar (3) is embedded in the draw-in groove (4) of sub-end plate (2), female end plate (1) correspondence, parallel installation between two.

2. a kind of torsional rigidity regulating device as claimed in claim 1, is characterized in that: torsional rigidity regulating device connects and uses in turn between two.

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