Five-degree-of-freedom floating compensation device

Abstract

The invention discloses a five-degree-of-freedom floating compensation device. The five-degree-of-freedom floating compensation device comprises a mounting base plate; two hinge brackets B are symmetrically and fixedly connected to one end of the mounting base plate, and a limiting bracket is fixedly connected to the other end; two symmetrical swing rods are hinged between the hinge brackets B through a shaft B; the left ends of the two swing rods are hinged with hinge brackets A through shafts A; a rotating shaft C is hinged between the right ends of the swing rods; a counterweight is connected to the middle of the rotating shaft C through a suspension rod; support plates are fixedly connected above the hinge brackets A; limiting clamping plates are fixedly connected above the support plates through two cushion plates on the sides; mounting plates are arranged below the limiting clamping plates, and are fixedly connected with connecting pieces B; and multiple steel balls are arrangedbetween the mounting plates and the support plates. The device has the characteristics of automatic following compensation in connection of two devices or parts, low additional load in connected places and simple and reliable structure.

Description

technical field [0001] The invention relates to a compensation device, in particular to a five-degree-of-freedom floating compensation device, which belongs to the technical field of engineering machinery. Background technique [0002] The connection of two devices or parts is often encountered in machinery and various projects. There are many methods of connection. From the relative position of the connection, it can usually be divided into rigid and non-rigid connections. Rigid connections feature installation accuracy High, the relative position is fixed, the connection is reliable, and the motion transmission is accurate. It is suitable for occasions with high requirements on the relative position. The disadvantage of rigid connection requires high precision in the processing and installation position of the joint. When the accuracy of the joint and the relative installation position cannot reach When it is required, it cannot be installed or a large additional load will...

AI Technical Summary

Problems solved by technology

[0002] The connection of two devices or parts is often encountered in machinery and various projects. There are many methods of connection. From the relative position of the connection, it can usually be divided into rigid and non-rigid connections. Rigid connections feature installation accuracy High, the relative position is fixed, the connection is reliable, and the motion transmission is accurate. It is suitable for occasions with high requirements on the relative position. The disadvantage of rigid connection requires high precision in the processing and installation position of the joint. When the accuracy of the joint and the relative installation position cannot reach When it is required, it cannot be installed or a large additional load will be generated after installation. In severe cases, the connecting parts will be damaged and the service life will be shortened. Influence, the relative change of the reference leads to the change of the relative position of the joints, which will also have adverse consequences

The advantages and disadvantages of non-rigid connection are opposite to those of rigid connection. The more common ones, such as elastic body and cross slider, etc., can usually compensate the position error of about 3mm and 3° at most. The installation standards of the two connecting parts are inconsistent, but due to the need for installation accuracy, they must be rigidly connected, such as the connection between the device for high temperature and high pressure testing and the external test instrument, in order to ensure the test accuracy must be rigidly connected, the initial connection of the equipment is at room temperature Under normal pressure, when it comes to high-temperature and high-pressure experiments, if the instrumentation is relatively light and can be directly installed on the experimental device, it may have little effect. The relationship between the connection position of the device changes accordingly, and these changes cannot be accurately predicted. In this case, if the position of the external instrument is not adjusted in time, the original connection will generate a large additional load, and in severe cases, it will be damaged, causing damage to the device or instrument. occurs, a device is required to automatically compensate the position of one of the connectors so that it follows the change of the other. There are many similar situations, which are very common in mechanical devices, and there are many reasons for the change in the positional relationship of the connectors. It can be temperature or It can be that the movement of the interconnected parts is inconsistent, such as the vibration test platform, the moving train carriage, the settlement on the building, etc. There are various automatic compensation methods. Usually, the more degrees of freedom required for compensation, the more complex the compensation mechanism. To achieve 5 Degree of freedom floating compensation, the typical structure of the mechanical device is to use a translation platform that can move in parallel in the XYZ direction combined with a rotating mechanism. In the Z-axis direction, due to the existence of gravity, in order to reduce the movement resistance of the Z-axis, it is usually necessary to use a cylinder, an air spring, etc. , hanging counterweight and other methods to hold up the platform mechanism and keep it in a floating state

The advantage of this kind of platform is that its structure is reliable, and it can adapt to a wide range of compensation, but its disadvantages are large dimensions, bulky and complex structure, large movement resistance, low response frequency, high manufacturing and maintenance costs, which affect its application range. In most engineering applications, the range of position compensation does not need to be very large. It is necessary to meet the requirements of position compensation. The structure of the device is simple and reliable, and the cost of manufacturing and maintenance is low. Therefore, it is necessary to invent a new device and has certain application prospects.

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