JP3653312B2 - Rotating machine support structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotating machine support structure, and more particularly to a novel improvement for preventing rotation displacement absorption and mechanical breakage by connecting a support rod of a case and a rotation stopper only through elastic means. .
[0002]
[Prior art]
Examples of this type of rotating machine support structure that have been used in the past include the first conventional example shown in FIGS. 5 and 6 and the second conventional example shown in FIGS. 7 and 8.
That is, in the first conventional example shown in FIGS. 5 and 6, what is denoted by reference numeral 1 is a mechanical shaft made up of an induction motor or a rotating shaft of a machine tool, and the mechanical shaft 1 is made up of a resolver as a speed sensor. A rotating machine 2 is connected, and a single support bar 4 provided in a case 3 of the rotating machine 2 is formed of a U-shaped rotation stopper 6 that is fixed to the upper part of a fixed base 5 with bolts 6A. It is operably provided in the groove 7. Therefore, this structure achieves relief in the X, Y, and Z axis directions.
In the second conventional example shown in FIGS. 7 and 8, what is denoted by reference numeral 1 is a mechanical shaft, and a rotating machine 2 comprising a resolver as a speed sensor is connected to the mechanical shaft 1. Four through holes 11 are formed in the rotating machine fixing flange 10 provided in the case 3. An L-shaped plate-like rotation stopper 6 is provided at a position adjacent to the rotating machine fixing flange 10 at the outer peripheral position of the case 3, and the rotation stopper 6 is fixed on the base 5. ing. The case 3 passes through an opening 6 a formed at the center of the rotation stopper 6, and a plurality of rods 6 b formed around the opening 6 a of the rotation stopper 6 serve as the rotating machine fixing flange 10. The clearance in the X, Y, and Z axis directions is achieved by being inserted into the through holes 11.
[0003]
[Problems to be solved by the invention]
Since the conventional rotating machine support structure is configured as described above, the following problems exist.
That is, in the first conventional example, it is effective as a case-side rotation stopper, but when an error occurs in the accuracy of coupling with the mechanical shaft, or the rotation of the shaft exceeds the clearance between the rotation stopper and the support rod. However, there is no way to absorb and release this displacement, the stresses of the mechanical elements collide with each other, and a fatal defect occurs in a mechanically weak part. That is, the support rod was broken.
Further, in the second conventional example, it is difficult to deal with the relief in the X-axis and Y-axis directions, and the stress caused by the deflection of the rod due to the displacement and the ball bearing in the rotating machine collide with each other. As a result, in many cases the ball bearing It was damaged.
Also, in any conventional configuration, since the gap between the rotation stoppers requires dimensional control with high accuracy, the processing dimensions of the rotation stoppers and the rotating machine need to be managed by several μm, which increases the cost. .
[0004]
The present invention has been made to solve the above-described problems, and in particular, by connecting the support rod of the case and the rotation stopper only through elastic means, absorption of rotational displacement and mechanical damage are achieved. An object of the present invention is to provide a rotating machine support structure that prevents the above-described problem.
[0005]
[Means for Solving the Problems]
A rotating machine support structure according to the present invention includes a rotating machine case connected to an end of a machine shaft composed of a rotating shaft as a speed sensor along a direction orthogonal to the axial direction of the machine shaft. In a rotating machine support structure that is extended and linearly supported by a single support rod and a rotation stopper connected to the support rod, the rotation stopper is formed on the rotation stopper and spaced apart from each other. A pair of wall pieces, a pair of elastic members disposed between the wall pieces and compressed, and a pair of elastic members disposed between the wall pieces. Only the elastic members are located between the elastic members, and the elastic members hold the support rods pressed from both sides, and the support rods can freely escape in three axial directions by the elastic action of the elastic members. It is the structure which has an effect | action .
[0006]
More specifically, the rotation stopper has a U-shaped configuration.
[0007]
More specifically, the rotation stopper member is a structure consisting of the rotation preventing piece of a pair of slidably mounted Shi Na L-shaped.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a rotating machine support structure according to the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
In the first embodiment shown in FIG. 1 and FIG. 2, what is denoted by reference numeral 1 is a mechanical shaft composed of an induction motor or a rotating shaft of a machine tool, and the mechanical shaft 1 has a resolver (eg, an encoder) as a speed sensor. Or a rotary machine 2 made of a motor) is connected, and a single linear support bar 4 provided in a case 3 of the rotary machine 2 is disposed in the groove 7 of the U-shaped rotation stopper 6. Has been.
[0009]
Between the support bar 4 and the groove 7, that is, a pair of wall pieces 6D positioned at a distance from each other, only an elastic means 30 composed of rubber, a spring, a hydraulic cylinder or the like is provided. The means 30 is composed of a pair of elastic members 30 a and 30 b, and each elastic member 30 a and 30 b is disposed in a compressed state on both sides of the support bar 4.
Accordingly, the elastic members 30a and 30b hold the support bar 4 in a state of being pressurized from both sides , and the support bar 4 has a free escaping action in the X, Y and Z axis directions due to its elastic action. Therefore, even when an excessive displacement is applied to the case 3, the support bar 4 can escape, and damage or the like can be prevented.
[0010]
Further, in the second embodiment shown in FIG. 3 and FIG. 4, only the configuration of the rotation stopper 6 is different and the other configurations are the same as those described above. Omitted. That is, the anti-rotation body 6 is composed of a pair of anti-rotation pieces 6B, 6C as a pair of L-shaped wall pieces 6D, and the support bar 4 is interposed only through a pair of elastic members 30a, 30b. The rotation stoppers 6B and 6C are held and elastically held. The rotation stopper pieces 6B and 6C are slidably provided so that the distance between the rotation stopper pieces 6B and 6C can be freely changed.
[0011]
【The invention's effect】
Since the rotating machine support structure according to the present invention is configured as described above, the following effects can be obtained.
That is, since the support rod of the case of the speed sensor is held by the rotation stop body only through the elastic means, the support rod can have a degree of freedom in the X, Y, and Z three axis directions of the rotating machine. Absorbing displacements in all directions of the shaft, preventing mechanical breakage, extending the life of the rotating machine and exhibiting the original performance, it is possible to achieve cost reduction.
[Brief description of the drawings]
FIG. 1 is a front view showing a rotating machine support structure according to the present invention.
FIG. 2 is a right side view of FIG.
FIG. 3 is a front view showing another example of FIG. 1;
4 is a right side view of FIG. 3. FIG.
FIG. 5 is a front view showing a conventional rotating machine support structure.
6 is a right side view of FIG. 5. FIG.
7 is a front view showing another example of FIG. 5;
FIG. 8 is a right side view of FIG.
[Explanation of symbols]
1 Machine shaft 2 Rotating machine (speed sensor)
DESCRIPTION OF SYMBOLS 3 Case 4 Support rod 6 Anti-rotation body 6B, 6C Anti-rotation piece 6D Wall piece 30 Elastic means 30a, 30b Elastic member

Claims (3)

The case (3) of the rotating machine (2) connected to the end of the machine shaft (1) composed of a rotation shaft as a speed sensor is the axial direction of the machine shaft (1) provided in the case (3). A rotating machine support structure which is supported by a single support bar (4) and a rotation stopper (6) connected to the support bar (4), which are linearly extended along an orthogonal direction. A pair of wall pieces (6D) formed on the rotation stop body (6) and spaced from each other, the support rod (4) located in the rotation stop body (6) , and the walls. piece (6D) elastic members of a pair of disposed and compressed state between (30a, 30b) and wherein the support rod (4) and said each elastic member between each wall piece (6D) ( 30a, 30b) only located, the respective elastic members (30a, 30b) is held in a state pressurized from both sides of the support rod (4), said support rods (4) of the respective elastic members (30a, 30b) Has a flexible relief action in the three-axis (X, Y, Z) directions due to the elastic action A rotating machine support structure characterized by that .   The rotating machine support structure according to claim 1, wherein the rotation stop body (6) has a U-shape. The rotation stopping member (6) is rotating machine support structure of claim 1 wherein the detent piece of a pair of slidably mounted Shi Na L-shaped (6B, 6C) to be made of the features.

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