KR930004137Y1 - Centering apparatus for oilless bearing - Google Patents

Abstract

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Description

Centering device for oilless bearing

1 is a cross-sectional view showing the device of the present invention

Figure 2a, b, c is a cross-sectional view showing the process of centering the oilless bearing.

* Explanation of symbols for main parts of the drawings

1: frame 2,3,7: thin cylinder

4 housing 5 support plate

6: guide bar 8: centering rod

9: pad

The present invention relates to a centering device for accurately positioning and fixing an oilless bearing used in a rotating device such as a motor at an end bracket.

In general, oilless bearings are widely used to hold rotation shafts of various devices that require rotation most stably and precisely. These oilless bearings are fixed to end brackets and oilless bearings The shaft is fitted and supported.

Therefore, the oilless bearing must be coupled to the end bracket in the correct position. For this purpose, the oilless bearing must be centered in the correct position.

However, since the oilless bearing is inserted and fixed to the end bracket by the neck of the operator without a separate device for centering the oilless bearing, the center hole of the oilless bearing inserted in both end brackets coincides linearly. In many cases, this caused not only a large number of assembly failures during the assembly of the shaft, but also a start up failure or abnormal noise of the rotating machine.

The present invention is to provide a mechanical device that can be accurately centered on the endless oil bracket bearing, which will be described in more detail by the accompanying drawings as follows.

1 is a cross-sectional view showing the present invention, the device of the present invention is to hold the frame (1) for holding and fixing the various components, and the end bracket 12 is installed on both sides of the bottom surface of the frame 11 The cylinder 3 which functions as a role, the pad 9 fixed to the piston rod of the cylinder 3, the support plate drive cylinder 2 provided in the upper surface of the frame, and the cylinder 2 A support plate 5 coupled between the piston rods to move up and down according to the operation of the cylinder 2, a centering rod drive cylinder 7 mounted on and fixed to an upper portion of the support plate 5, and a centering rod drive cylinder ( The centering rod (8) fixed to the piston rod (7) and the support plate in the state of being fixed to the support plate while holding the oilless bearing (13) while lifting and lowering together with the support plate, and also serves as a guide of the centering rod Guide bar (6) and guide bar , It consists of a housing 4 and a linear bush 10 for guiding the falling movement.

Moreover, the outer diameter of the lower end part of the centering rod 8 is formed slightly smaller than the diameter of the center hole of the oilless bearing 13, and the die 11 is shaped so that the end bracket 12 can be supported.

The operation of the device of the present invention as described above will be described.

As shown in the accompanying drawings, the end bracket 12 is placed on the die 11, the oilless bearing 13 is placed in the center bearing insertion groove of the end bracket 12, and power is applied to the apparatus. (2) (7) is operated in sequence to fix the oilless bearing by centering it in the correct position (each cylinder is operated by a separate switch mechanism not shown) and operated sequentially.

That is, when power is applied to the device, the piston 9 of the cylinder 3 installed on both sides of the bottom of the frame 1 is advanced at the same time, and the pad 9 is connected to the upper surface of the end bracket 12 to press the end bracket.

Thus, the end bracket is completely fixed without flow, and then the piston rod of the support plate driving cylinder 2 is reversed so that the support plate 5 coupled between each piston rod descends.

As the support plate 5 descends, the support plate 5 and the guide bar 6 fixed to the support plate and the centering rod driving cylinder 7 move downward together, so that the lower end of the guide bar 6 is connected to the upper surface of the oilless bearing. Subsequently, the piston rod of the centering rod driving cylinder 7 is advanced so that the centering rod 8 is inserted into the center hole of the oilless bearing 13 so that the oilless bearing 13 is inclined to the bearing insertion groove. Even if present, the oilless bearing is corrected to the correct position and then fixed to the end bracket. FIG. 2 is a view illustrating a process in which the oilless bearing 13 is centered in a state in which the oilless bearing 13 is inclined to the bearing insertion groove of the end bracket 12. As shown in FIG. When the guide bar 6 is lowered by the driving of the cylinder 2, the bottom of the guide bar is first connected to one side of the oilless bearing, and when the guide bar 6 is further lowered, the oil is driven by the force applied by the guide bar. As the lesser bearing 13 flows, the bottom surface of the guide bar and the upper surface of the oilless bearing are entirely connected, so that the oilless bearing is horizontally positioned as shown in FIG. 2B.

When the centering rod drive cylinder 7 is operated in this state, the centering rod 6 is lowered, the centering rod is inserted into the center hole of the oilless bearing 13, and the centering operation of the oilless bearing is completed. As the support plate 5 and the guide bar 6 are further lowered by the support plate driving cylinder 2, the oilless bearing is forcedly pressed into the bearing insertion groove of the end bracket.

In addition, when the centering operation of the oilless bearing is completed, the piston rod of the centering rod driving cylinder 7 retreats backward, so that the centering rod 8 comes out of the center hole of the oilless bearing 13 as opposed to the above. As the piston rod of the drive cylinder 2 is advanced, the support plate 5 and the guide bar 6 are raised, and the pad 9 fixed to the piston rod of the cylinder 3 is raised to return to its original position.

Therefore, the oilless bearing is centered so that the fixed end bracket can be transferred to the next process.

As described above, according to the device of the present invention, since the oilless bearing can be accurately centered on the end bracket, the assembly work of the motor shaft can be facilitated and the productivity can be improved. Defects and abnormal noises can be prevented in advance.

Claims (4)

An end bracket fixing means for pressing and holding the end bracket mounted on the die, a bearing supporting means for supporting an oilless bearing located at the center of the end bracket, and a bearing positioning means for vertically maintaining the center hole of the oilless bearing; Oiling bearing centering device characterized in that the. The oil bracket according to claim 1, wherein the end bracket fixing means comprises a cylinder (3) fixed to the bottom of the frame (1) and a pad (9) fixed to the piston rod of the cylinder to press the end bracket. Centering device of the bearing. The bearing support means is a support plate driving cylinder (2) fixed to the upper surface of the frame, a support plate (5) fixed and fixed to the piston rod of the cylinder and the guide bar (6) fixed to the support plate The centering device of the oilless bearing, characterized in that the guide bar is connected to the bearing upper surface. The bearing positioning means according to claim 1, wherein the bearing positioning means comprises a cylinder (7) fixed to the support plate (5) and a centering rod (8) fixed to the piston rod of the cylinder to move up and down. A centering device for an oilless bearing, characterized by being inserted into a bore.