KR102252360B1 - Vibration isolation device - Google Patents

Abstract

The present invention relates to a vibration isolation device for a pump for preventing lateral vibration of a pump due to an earthquake. In the vibration isolation device for a pump according to the present invention, a bearing kit (30) is disposed between an upper case (10) and a lower case (20), a third elastic body (35) is wrapped around the perimeter of the bearing kit (30), an upper piece (41) of a fixing piece (40) is coupled to a side surface of the upper case (10) by a fastening means (45), and a lower piece (42) of the fixing piece (40) is coupled to a side surface of the lower case (20) by a fastening means (46), such that the upper case (10) and the lower case (20) are coupled by the fixing piece (40).

Description

Seismic isolation device for pump{VIBRATION ISOLATION DEVICE}

The present invention relates to a seismic isolator for a pump for preventing transverse vibration of a pump due to an earthquake, and more particularly, a bearing kit is disposed between an upper case and a lower case, and the upper case and the lower case are provided by a fixed piece. It relates to a seismic isolator for a pump to be combined.

Republic of Korea Utility Model Registration No. 20-0282731 (July 9, 2002, registration) introduces the "pump vibration isolator".

The vibration isolator of the pump includes a vibration isolating bracket that is directly fastened and fixed to the pump casing with several bolts, a first vibration isolating rubber interposed between the vibration isolating bracket and the pump casing, and a bolt of the vibration isolating bracket is inserted. It includes a second anti-vibration rubber interposed between the ball and the bolt head.

However, the vibration isolator of the pump is attenuated to some extent by the first and second vibration isolating rubbers, but there is a disadvantage in that it cannot attenuate the vibration in the horizontal direction.

Accordingly, an object of the present invention is that a bearing kit is disposed between the upper case and the lower case, and the upper case and the lower case are coupled by a fixing piece, so that when an earthquake does not occur, the pump is operated with respect to the lower case by the fixing piece. The supporting upper case is prevented from moving relative to each other, and when an earthquake occurs, the neck of the fixing piece is broken and the lower case vibrates in the transverse direction due to the vibration of the earthquake, and the upper case vibrates in the transverse direction by the bearing kit. It is to provide a seismic isolator for a pump capable of preventing the pump from being damaged by an earthquake.

In the seismic isolator for a pump according to the present invention for achieving the above object, a bearing kit is disposed between the upper case and the lower case, a third elastic body is wrapped around the bearing kit, and the upper side of the fixing piece is the side surface of the upper case. It is coupled by the fastening means, the lower piece of the fixing piece is coupled to the side of the lower case by the fastening means, and the upper case and the lower case are coupled by the fixing piece.

The upper case is formed in the shape of a square plate, a circular first mounting groove is formed on the lower surface, the area of the first mounting groove is formed larger than the area of the bearing kit, and a first mounting groove is formed on the circumferential surface of the first mounting groove. It is characterized in that the elastic body is disposed, and a fastening hole is formed close to each corner.

The first mounting groove is characterized in that the gradient is formed so that the depth of the central portion is deeper than the depth of the circumferential portion.

The first elastic body is characterized in that the coupling protrusion is formed on the outer circumferential surface, the coupling groove is formed on the circumferential surface of the first mounting groove, and the coupling protrusion of the first elastic body is fitted into the coupling groove.

The lower case is formed in the shape of a square plate, a circular second mounting groove is formed on the upper surface to correspond to the first mounting groove of the upper case, a second elastic body is disposed on the circumferential surface of the second mounting groove, and It is characterized in that a plurality of fastening pieces are formed.

The second mounting groove is characterized in that the gradient is formed so that the depth of the central portion is deeper than the depth of the circumferential portion.

The second elastic body is characterized in that the coupling protrusion is formed on the outer circumferential surface, the coupling groove is formed on the circumferential surface of the second mounting groove, and the coupling protrusion of the second elastic body is fitted into the coupling groove.

In the bearing kit, a plurality of steel balls are arranged in a ring-shaped retainer, a boss portion is formed in the center of the retainer, the boss portion and the retainer are connected by a plurality of connecting portions, and a ring-shaped third elastic body is arranged around the retainer. It is characterized in that the steel ball comes into contact with the lower surface of the upper case and the upper surface of the lower case.

A flow gap is formed between the upper case and the lower case by the steel ball of the bearing kit.

The first elastic body, the second elastic body, and the third elastic body is characterized in that it is formed of any one of rubber, silicone, and polyurethane.

The fixed piece is characterized in that an upper piece and a lower piece are connected by a neck, and when the earthquake intensity reaches a set value, the neck is broken, and the upper piece and the lower piece are separated.

Accordingly, in the seismic isolator for a pump according to the present invention, when an earthquake does not occur, the upper case supporting the pump with respect to the lower case is prevented from moving relative to the lower case. When the lower case vibrates in the transverse direction due to the vibration of the earthquake while the neck is broken, the upper case does not vibrate in the transverse direction by the bearing kit, thus preventing the pump from being damaged by the earthquake. Alternatively, as the upper case supporting the base is supported by the bearing kit, the load applied to the upper case is distributed, the pump or the base can be stably supported, the bearing kit is moved by an earthquake, and the bearing kit is placed in the upper case. It automatically moves to the center of the and lower case, and has the effect of preventing the bearing kit from being damaged or deformed by impact.

1 is a perspective view showing a seismic isolating device for a pump according to the present invention
Figure 2 is an exploded perspective view showing a seismic isolator for a pump according to the present invention
3 is a plan view showing a seismic isolating device for a pump according to the present invention
Figure 4 is a side view and a partial enlarged detail view showing a seismic isolator for a pump according to the present invention
5 is a side view showing a state in which the base for a booster pump is supported by the base isolator for a pump according to the present invention.
Figure 6 is a side view showing a state in which the pump is directly supported by the seismic isolator for a pump according to the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 to 4, in the seismic isolator for a pump according to the present invention, a bearing kit 30 is disposed between the upper case 10 and the lower case 20, and the circumference of the bearing kit 30 is 3 The elastic body 35 is wrapped, and the upper piece 41 of the fixing piece 40 is coupled to the side surface of the upper case 10 by a fastening means 45 (for example, a screw), and the lower piece of the fixing piece 40. 42 is coupled to the side of the lower case 20 by a fastening means 46 (for example, a screw), so that the upper case 10 and the lower case 20 are coupled by a fixing piece 40.

The upper case 10 is formed in a square plate shape, and a circular first mounting groove 11 is formed on the lower surface, so that the area of the first mounting groove 11 is formed larger than the area of the bearing kit 30 Then, the first elastic body 12 is disposed on the circumferential surface of the first mounting groove 11, and fastening holes 13 are formed close to each corner.

The first mounting groove 11 is inclined so that the depth of the center portion is deeper than the depth of the circumference portion.

The first elastic body 12 has a coupling protrusion 12a formed on the outer circumferential surface, and a coupling groove 11a is formed on the circumferential surface of the first mounting groove 11, so that the coupling protrusion 12a of the first elastic body 12 ) Is fitted into the coupling groove (11a).

The fastening hole 13 is a hole through which a bolt (not shown) for fixing the pump or the base supporting the pump is fastened.

The lower case 20 is formed in a square plate shape, and a circular second mounting groove 21 is formed on the upper surface to correspond to the first mounting groove 11 of the upper case 10, and the second mounting groove A second elastic body 22 is disposed on the circumferential surface of (21), and a plurality of fastening pieces 23 are formed around the circumferential surface.

The second mounting groove 21 is inclined so that the depth of the center portion is deeper than the depth of the circumference portion.

The second elastic body 22 has a coupling protrusion 22a formed on the outer circumferential surface, and a coupling groove 21a is formed on the circumferential surface of the second mounting groove 21, so that the coupling protrusion 22a of the second elastic body 22 ) Is fitted into the coupling groove (21a).

In the bearing kit 30, a plurality of steel balls 32 are disposed in a ring-shaped retainer 31, a boss portion 33 is formed in the center of the retainer 31, and the boss portion 33 and the retainer 31 ) Is connected by a plurality of connection portions 34, a ring-shaped third elastic body 35 is disposed around the retainer 31, and the steel ball 32 is formed on the lower surface of the upper case 10 and the lower case ( It comes into contact with the upper surface of 20).

In addition, a flow gap (S1; see FIG. 4) is formed between the upper case 10 and the lower case 20 by the steel balls 32 of the bearing kit 30.

The first elastic body 12, the second elastic body 22, and the third elastic body 35 may be formed of any one of rubber, silicone, and polyurethane.

In the fixed piece 40, the upper piece 41 and the lower piece 42 are connected by the neck 43, and when the seismic intensity reaches a set value, the neck 43 is broken, and the upper piece 41 And the lower piece 42 are separated.

For example, when the magnitude 6 is reached based on the modified Merkaly magnitude, the neck 43 is broken, and the upper piece 41 and the lower piece 42 are separated.

The seismic isolator for a pump 1 according to the present invention configured as described above supports the base 50 for supporting the booster pump, as shown in FIG. 5, or, as shown in FIG. It can be mounted directly on the case 10.

In addition, in the seismic isolator for a pump according to the present invention, when an earthquake does not occur, the upper case 10 and the lower case 20 are coupled by the fixing piece 40, so that the upper case ( 10) is prevented from moving relatively, so that the base 50 disposed in the upper case as shown in FIG. 5 or the pump 70 disposed in the upper case as shown in FIG. 6 move in the horizontal direction such as the arrow 61 direction. Will be prevented.

And, when an earthquake occurs, when the seismic intensity reaches a set value (e.g., when the intensity reaches 6 based on the modified Merkaly intensity), the neck 42 of the fixing piece 40 is broken, and the upper case 10 ), the upper piece 41 coupled to the lower case 20 and the lower piece 42 coupled to the lower case 20 are separated, and the lower case 20 is a horizontal axis in the direction of the arrow 61 of FIGS. 5 and 6 due to an earthquake. Even if it vibrates in the direction, the transverse vibration of the lower case 20 is not transmitted to the upper case 30 by the bearing kit 30, so the upper case 10 supporting the pump 70 or the base 50 Does not vibrate in the transverse direction.

Here, as the upper case 10 supporting the heavy pump or the base is supported by the bearing kit 30, a plurality of steel balls 32 having a diameter smaller than that of a single steel ball having a large diameter supporting the upper case Since the upper case 10 is supported, the load applied to the upper case 10 is distributed, and the pump 70 or the base 50 can be stably supported.

In addition, the first mounting groove 11 of the upper case 10 and the second mounting groove 21 of the lower case 20 are inclined so that the center is deeper than the circumference, and the bearing kit 30 ) Is moved, and the bearing kit 30 has a self-aligning function that automatically moves to the center of the upper case 10 and the lower case 20, and the bearing kit 30 has the upper case 10 and the lower case. When the case is out of the center of the case 20, the third elastic body 35 surrounding the circumference of the retainer 31 is the first elastic body 12 of the upper case 10 and the second elastic body 22 of the lower case 20. ), the bearing kit 30 can be moved to the center of the upper case 10 and the lower case 20 by the repulsive force of the third elastic body 35.

At this time, in the bearing kit 30, the boss portion 33 and the plurality of connection portions 34 reinforce the retainer 31, so that the retainer 31 can be prevented from being deformed by an external impact.

10: upper case 20: lower case
30: bearing kit 40: fixed piece

Claims (11)

A bearing kit 30 is disposed between the upper case 10 and the lower case 20, and a third elastic body 35 surrounds the circumference of the bearing kit 30, and the upper piece 41 of the fixing piece 40 ) Is coupled to the side of the upper case 10 by a fastening means 45, and the lower piece 42 of the fixing piece 40 is coupled to the side of the lower case 20 by a fastening means 46, The upper case 10 and the lower case 20 are coupled by the fixing piece 40,
The upper case 10 is formed in a square plate shape, and a circular first mounting groove 11 is formed on the lower surface, so that the area of the first mounting groove 11 is formed larger than the area of the bearing kit 30 And, the first elastic body 12 is disposed on the circumferential surface of the first mounting groove 11, and the fastening hole 13 is formed close to each corner,
The lower case 20 is formed in a square plate shape, and a circular second mounting groove 21 is formed on the upper surface to correspond to the first mounting groove 11 of the upper case 10, and the second mounting groove A second elastic body 22 is disposed on the circumferential surface of (21), and a plurality of fastening pieces 23 are formed around the circumference,
In the bearing kit 30, a plurality of steel balls 32 are disposed in a ring-shaped retainer 31, a boss portion 33 is formed in the center of the retainer 31, and the boss portion 33 and the retainer 31 ) Is connected by a plurality of connection portions 34, a ring-shaped third elastic body 35 is disposed around the retainer 31, and the steel ball 32 is formed on the lower surface of the upper case 10 and the lower case ( A seismic isolator for a pump, characterized in that it comes into contact with the upper surface of 20).
delete The method of claim 1,
The first mounting groove 11 is a seismic isolator for a pump, characterized in that the gradient is formed so that the depth of the center is deeper than the depth of the circumference.
The method of claim 1,
The first elastic body 12 is disposed on the circumferential surface of the first mounting groove 11 of the upper case 10, the coupling protrusion 12a is formed on the outer circumferential surface, and the circumferential surface of the first mounting groove 11 A seismic isolator for a pump, characterized in that the coupling groove (11a) is formed, and the coupling protrusion (12a) of the first elastic body (12) is fitted into the coupling groove (11a).
delete The method of claim 1,
The second mounting groove (21) is a seismic isolator for a pump, characterized in that the gradient is formed so that the depth of the center is deeper than the depth of the circumference.
The method of claim 1,
The second elastic body 22 has a coupling protrusion 22a formed on the outer circumferential surface, and a coupling groove 21a is formed on the circumferential surface of the second mounting groove 21, so that the coupling protrusion 22a of the second elastic body 22 ) Is fitted into the coupling groove (21a).
delete The method of claim 1,
A seismic isolator for a pump, characterized in that a flow gap (S1) is formed between the upper case (10) and the lower case (20) by the bearing kit (30).
The method of claim 1,
The first elastic body (12), the second elastic body (22) and the third elastic body (35) is a seismic isolator for a pump, characterized in that formed of any one of rubber, silicone, and polyurethane.
The method of claim 1,
In the fixed piece 40, the upper piece 41 and the lower piece 42 are connected by the neck 43, and when the seismic intensity reaches a set value, the neck 43 is broken, and the upper piece 41 A seismic isolating device for a pump, characterized in that the and the lower piece 42 are separated.

Images