KR101613399B1

KR101613399B1 - Seismic reinforcement driving a friction coating on a rolling unit rolling surface

Info

Publication number: KR101613399B1
Application number: KR1020150102101A
Authority: KR
Inventors: 장성철
Original assignee: 장성철
Priority date: 2015-07-19
Filing date: 2015-07-19
Publication date: 2016-04-20
Also published as: CN106662201A; CN106662201B; WO2017014520A1; TR201718273T1

Abstract

In a seismic isolation device having a ball (ball transfer) and a rolling part rolling the ball, the rolling part is made of a rigid material to support a large load, and the frictional force is small due to the rigid property of the rolling part material And the displacement of the ball rolling is relatively larger than the magnitude of the earthquake. Most of the time, however, because the ball can not have an infinitely large rolling area, the customer wants to be provided with a seismic isolation device that can withstand a large earthquake, while still requiring a small rolling radius. Especially, this phenomenon is more evident in a seismic isolation device for a computer using a cable because a cable entry space must be secured.
The present invention relates to a technique for generating a frictional force which is greatly increased without a problem in a large load by coating a material having a large frictional force on a surface of a hard rolling part like a rolling surface.

Description

[0001] The present invention relates to an anti-friction coating on a rolling surface of a rolling part,

The present invention relates to a face-to-face driving unit in which a rolling face of a rolling unit is coated with a friction-enhancing coating, and more preferably, a rolling unit using a hard material (for bearing a large load) The earthquake-proof apparatus having the earthquake-proofing unit according to the present invention performs friction force on the rolling surface of the hardened rolling unit in order to prevent the ball from moving out of the rolling unit due to the relatively large displacement of the ball when the earthquake occurs, The friction force is greatly increased without a problem in a large load so as to have a small displacement displacement of the ball with respect to the seismic intensity so that the rolling surface of the rolling portion to generate the effect that the ball does not come out of the rolling portion even in a large earthquake The present invention relates to an optical isolator having a reinforced coating.

As is generally known, a shaking table test is performed on a seismic apparatus having a surface-to-surface driving portion provided with a rolling portion using a rigid material (for bearing a large load) on which a ball (a bearing) rolls. Because the ball meets the rolling part (metal, engineering plastic) of the stiffness and the engineering plastic, it rolls on the ice plate so that the ball rolls so well that the displacement displacement width of the ball is larger than the strength of the earthquake.

That is, in the "plastic bearing block assembly and the seismic isolation device using the same " of the registered patent No. 10-1410025, when the plastic bearing block assembly rolls on the arc-shaped friction surface in the event of an earthquake, the displacement of the plastic bearing block assembly is large, The problem of going out of the friction surface could not be solved.

In addition, the ball is made of rubber balls in order to prevent frictional force from being reduced to the outside of the concave groove, in the "seismic equipments for electric / electronic equipment supporting excellent damping performance and rubber ball for this" of the registered patent No. 10-1187412, The rubber ball is worn out while being rolled in the concave groove formed in the arc shape. Therefore, when the displacement occurs largely at the time of occurrence of the earthquake after the elapse of time, the problem that the rubber ball goes out of the concave groove can not be solved.

In addition, the seismic drive part composed of the upper plate and the lower plate, in which the ball bearing of the "rib-formed counterweight drive part" of the patent publication No. 10-2015-0053866 rolls, also prevents the ball bearing from running out along the rolling surface between the upper and lower plates I could not do it.

With respect to the above-described construction, since the size of the rolling portion of the surface-ground driving portion can not be infinitely increased, efforts are being made to develop a surface-mounted driving portion capable of handling a large earthquake intensity at a limited rolling portion size.

(KR) Patent No. 10-1410025 (KR) Patent No. 10-1187412 (KR) Patent Publication No. 10-2015-0053866

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a ball bearing and a ball rolling method, To solve the problem.

In other words, according to the present invention, when the earthquake occurs, the ball rolling on the rolling surface of the rolling part forming the face-locked part has no problem even with a large load, and friction force is greatly increased so as to have small displacement of the ball with respect to seismic intensity. It is aimed at not leaving out wealth.

In order to achieve the above object, the present invention will be described in detail.

According to one aspect of the present invention, in the friction member of the present invention,

The cable entry space 113 is opened and installed between the seismic isolation device 100 and the seismic isolation device 100 in which the object to be protected 140 used for communication equipment, server and disk equipment, electric power equipment, A frictional force is applied to the rolling surface 112 of the rolling part 111 having an arcuate shape so that the upper plate 110a of the base plate 110 made of a rigid material and the ball 120 mounted in the lower plate 110b can be driven And is configured to coat a reinforcing material (material) to withstand a large load, and to suppress the occurrence of large displacement of the ball 120 with respect to the earthquake intensity by the coating 130 that enhances frictional force.

The present invention having such characteristics as described above can not infinitely increase the size of the displacement width driven by the ball in the rolling section composed of the upper and lower plates at the time of occurrence of an earthquake, so that the displacement width driven by the ball and the width of the isolator are limited, And it is particularly effective when the load of the object to be protected is relatively high so that a rolling part of a hard (metal, engineering plastic) material which can withstand a high load can be used.

Representative examples of the above-mentioned seismic isolation devices include a seismic isolation device for server and disk protection, a seismic isolation device for power, and a seismic isolation device for production facility.

Therefore, according to the present invention, it is possible to manufacture an isolation device having a rolling part whose width is small due to a small movement of the ball compared to the earthquake intensity, while maintaining a high load handling capability.

Fig. 1 is a perspective view showing an example of an isolation device having a surface-to-surface driving unit applied to a protection target facility using a cable of a general ball bearing type.
FIG. 2A is a perspective view showing the importance of securing a cable entry space when an isolation device is applied to a single enclosure. FIG.
2B is a perspective view showing the importance of securing a cable survival space when using a single enclosure.
FIG. 3 is a perspective view illustrating an example of an isolator according to an embodiment of the present invention; FIG.
4 is a perspective view showing a rolling part according to the present invention and a rolling part of a conventional isolation device compared with each other.
FIG. 5 is a perspective view illustrating an example of an anti-vibration floor constructed using the anti-vibration member according to the present invention.

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

The structure of the surface-facing driving unit having the rolling surface of the rolling unit according to the present invention is formed by friction-enforcing coating, in which the inner rolling surface 112 of the upper plate 110a and the lower plate 110b is formed in an arcuate shape so that the ball (ball bearing, ball transfer) And a coating material 130 is applied to the rolling surface 112 of the rolling part 111. The material of the friction part 111 is coated on the rolling surface 111 of the rolling part 111,

The present invention having the above-described structure will be described in more detail with reference to the drawings.

In the present invention, a ball (ball bearing, ball transfer, etc.) 120 made of a hard material is used, and a rolling region 111 is formed as a space where the ball 120 and the ball 120 roll, (110). In addition, for the sake of convenience of the technology, it is described on the basis of the seismic isolation device 100 used for the communication equipment, the server and the disk facility, the electric power facility, the mechanical facility, and the production facility and is applied to one protected facility (enclosure) And the isolation device 100 will be described with reference to FIG.

If the seismic displacement unit 110 of the seismic isolation system 100 according to FIG. 1 is mainly used for protection of facilities, the facility is mainly installed in a housing or has a box shape. Therefore, in the present description, the protection object 140 as the enclosure is referred to for convenience.

1 is installed at the lower portion of the protection object 140. The width of the protection object 140 as the enclosure is generally 600 mm and the width of the lower portion of the protection object 140 And it is installed in a form that supports the isolation device 100 formed by forming the surface-facing drive part 110 on both sides. At this time, the seismic excitation unit 110 and the seismic excitation unit 110 are connected to each other by the connecting bar 116 to form the seismic isolation device 100.

As shown in FIG. 2, since the cable rises up between the seismic isolation device 100 and the seismic isolation device 100 and enters the protection object 140 and is connected to the equipment, the displacement width of the seismic isolation device 100 is exhausted , It is important to secure the cable entry space 113. [ 1, the width (width) of the narrowest isolation device 100 of the type of the isolation device 100 of the type shown in FIG. 1 is 273 mm and the worldwide market share is 1 It is above.

That is, considering that two pieces of vibration isolator 100 should be used, if the vibration isolator 100 has a width of 546 mm and a displacement width of 200 mm and a width of 600 mm is mounted on the vibration isolator 100, There is no or only a minimum cable survival space (indicating the diameter of the cable bundle to the remaining space minus the displacement width among the cable entry spaces 113) after consuming the displacement width of the cable 113 and the displacement width.

Therefore, when the isolation device 100 is installed, the cable entry space is spaced apart by 250 mm or more between the isolation device 100 and the isolation device 100. If the cable entry space is widened, the balance of the protection object 140 becomes unstable, a problem may arise when the earthquake occurs, the space is wasted, the beauty is poor, .

For a product with a width of 400 mm, the displacement width is mostly 140 mm to 200 mm, and the displacement width is smaller than that of the above 273 mm product. Moreover, since these products have a wide width, the cable entry space 113 is so small that the use thereof is extremely limited. It is not easy to secure the displacement width corresponding to the securing of the cable entry space 113 and the displacement width.

The displacement width of the product having the width of 273 mm as described above (the maximum displacement at which the ball 120 of the rolling section 111 moves) is 200 mm and has a large displacement width in this field. That is, the width of the rolling part 111 of the isolation device 100 is limited, so that the size of the rolling surface 112 is extremely limited.

Since the displacement width of 200 mm is the highest grade, the displacement width of only 10 mm is inevitable, and a displacement width of only 10 mm is inevitable. In the case of an earthquake, the object to be protected 140 may be either safe or damaged by a displacement of only 1 mm.

The above description has been described to explain that the displacement width can not be formed by enlarging the width unconditionally. In addition, the technical problems such as the cost problem and the spatial problem will be overlapped to have the limit of the displacement width.

In the present invention, instead of increasing the displacement width, the frictional force of the rolling surface 112 is increased, so that the ball 120 has a small displacement even at the same seismic intensity, thereby alleviating the shortage of the displacement width. It can be seen from the test that the rolling surface of the metal surface 112 and the coating 130 at the same earthquake intensity has a considerable difference in the displacement of the balls 120, It is found that the effect of reducing the displacement width is significant due to the friction of the surface.

As can be seen from the above description, it is a technique to narrow the width of the seismic isolation device 100 while having the diameter (displacement width) of the rolling surface 112 capable of coping with a large earthquake. Nowadays, new buildings in the data center are designed to have a seismic design of at least 7.0 on the Richter scale, and the displacement of the global earthquake-proof device (100) in the data center field is prepared for a large earthquake based on 200 mm.

In addition, since the computer equipment is considerably heavy, the material of the rolling part 111 is made of a hard material (metal such as steel, stainless steel, or engineering plastic), and the ball 120 is also made of steel ball. The soft material can increase the friction and increase the effect on the earthquake. Unfortunately, due to the nature of the isolation device 100, which is required to withstand the heavy weight continuously for a long period of time, it is difficult to bear the load with the soft material, .

As can be seen from the above, when the rolling part 111 of a rigid material and the ball 120 of a rigid material meet, a ball rolls on the ice plate. In other words, there is less friction on the rolling surface 112, which consumes a larger amount of displacement than the intensity of the earthquake. In this case, even in the same earthquake intensity, the seismic isolation device 100 of the same material consumes a lot of displacement width, and the displacement width of the seismic intensity is so large that it can not cope with a large earthquake.

In the present invention, as shown in FIG. 3, a material 130 having a large frictional force is coated on a rigid rolling surface 112 to minimize the displacement of the frictional force with respect to the seismic intensity. A large amount of frictional force is applied to the object 140 having a large load when the object 120 having the large frictional force is applied by the load 120 ) Tends to be tilted as it is pressed against a material having a large frictional force, or folding occurs due to thrust.

That is, the method of attaching the frictional material to the rolling surface 112 in the form of a double-sticker can not be used in the field of earthquake.

It is very important to select the material of the coating 130 and the thickness of the coating 130 in the coating 130 so that the coating 130, which is integrated with the rolling surface 112, As shown in FIG.

A coating material having a large friction coefficient such as rubber or urethane is selected and an adhesive for the coating 130 is applied to the surface of the rolling surface 112 and a large frictional force And then presses the material on the rolling surface 112 with a die having the same angle as that of the rolling surface 112.

At this time, the mold should take into account the thickness of the coating 130, etc. and increase the coating effect by applying heat when necessary.

The important point when the coating 130 is applied is that the rolling surface 112 and the coating material should be like one piece. Otherwise, the portion of the coating 130 may be torn by the balls 120 due to the load, or may be folded due to the warping, which may interfere with the rolling of the balls 120.

A variety of materials can be used for the coating 130, but frictional materials should be used. As a typical example, friction (synthetic) rubber, urethane, and chemical synthetic materials are used to easily handle materials, It can be cheap. Therefore, the rolling part 111 may be made of a material resistant to the load of the coating 130.

As described above, by coating the friction material on the rolling part 111, it is possible to manufacture the isolation device 100 having a small displacement displacement relative to the seismic intensity. In addition, the vibration isolation device 100 may be manufactured by disposing the rolling part 111 according to the application.

For example, as shown in FIG. 3, the rolling unit 111 may be combined to form the vibration isolator 100, or a seam double layer 150 may be formed as shown in FIG. 5. In the rolling unit 111 according to the present invention, So that various isolation devices 100 can be developed.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

100: seismic isolation device 110:
111: rolling part 112: rolling face
113: cable entry space 120: ball (bearing)
130: coating (material) 140: protection object (enclosure, box)
200: Seismic double floor

Claims

The cable entry space 113 is opened and installed between the seismic isolation device 100 and the seismic isolation device 100 in which the object to be protected 140 used for communication equipment, server and disk equipment, electric power equipment, In the seismic excitation part of the seismic isolation device 100,
The rolling part 111 having the arc shape of the rolling surface 112 on which the ball 120 and the ball 120 roll in the upper and lower plates 110a and 110b is formed of a strong metal material capable of withstanding the load And a coating 130 is formed by applying an adhesive for the coating 130 to the rolling surface 112 of the rolling part 111 and pressing the urethane which strengthens the frictional force with a heat applied on the adhesive. And a frictional force reinforcing coating is applied to the rolling surface of the rolling part.

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