KR101573849B1 - Vibration Dampener for Communication Cable Tray - Google Patents

Abstract

The present invention relates to a vibration dampener for a communication cable tray, which can support a cable tray wherein a communication cable is laid using a buffer spring, and comprises: floating brackets (30, 40) installed in an upper and a lower portion of a tray support (20); free side spring sheets (34a, 34b, 34c, 44a, 44b, 44c) installed in free side sheet coupling units (32a, 32b, 32c, 42a, 42b, 42c); buffer springs (50a, 50b, 50c, 60a, 60b, 60c) slantly arranged in the floating brackets (30, 40); fixed side spring seat (74a, 74b, 74c, 84a, 84b, 84c) supporting a fixed end (54a) of the buffer springs (50a, 50b, 50c, 60a, 60b, 60c); hanging member fixing brackets (70, 80) wherein fixed side sheet coupling units (72a, 72b, 72c, 82a, 82b, 82c) are radially arranged in an edge; pre-load adjustment nuts (90, 92) applying a pre-load to the buffer springs (50a, 50b, 50c, 60a, 60b, 60c); and bolt interference prevention holes (36, 46, 22, 24) formed to be vertically penetrated in the floating brackets (30, 40) and the tray support (20).

Description

{Communication Vibration Dampener for Communication Cable Tray}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a communication cable tray used for protecting a communication cable tray installed in a railroad facility from vibration, and more particularly to a cable tray using a cushion spring, To a power source for a communication cable tray.

Generally, cable trays used for laying telecommunication cables in railway facilities are installed by using the month bolts installed on the ceiling slabs. However, when vibration energy is transmitted to the night bolts and cable trays due to earthquakes or the like, vibration energy can not be absorbed It has a disadvantage that it is easily broken.

In order to overcome such disadvantages, conventionally, as shown in FIG. 1, a chain 2 (3) suspended from a ceiling is used to support the tray support 4 and the cable tray 1, When the vibration energy is transmitted from the ceiling slab to the chains 2 and 3, the chains 2 and 3 are shaken to block the vibration energy in the middle.

However, in the case where the vibration energy is directly transmitted to the cable tray 1, the vibration energy in the horizontal direction can absorb part of the cable tray 1 while being shaken, There is a problem that tensile force is applied to the chains 2 and 3 at the time of descending and the chains 2 and 3 are detached from the ceiling or the connecting portions of the tray support 4 and the chains 2 and 3 are broken.

Moreover, there is a problem in that the vibrational energy acting in the vertical direction is very vulnerable to vertical vibration because a heavy impact is applied to the chains 2 and 3 while the weight of the heavy communication cable and the cable tray 1 is increased.

Korean Registered Patent No. 10-1433730 (Aug. 28, 2014)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a vibration damping element for a communication cable tray capable of absorbing vibration energy directly or indirectly transmitted to a cable tray in which a communication cable is installed .

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a dust cover for a communication cable tray, comprising: a floating bracket installed at upper and lower portions of a tray support by a fastening member; A free spring seat provided on the free side seat engagement portion by the engagement member; A cushion spring disposed obliquely to the floating bracket so that the center line of the spring hole meets in a pyramid shape and the free end is supported by the free spring seat; A fixed side spring seat for supporting the fixed end of the buffer spring; A date bracket fixed radially to the edge of the stationary side seat engaging portion engaged with the stationary spring seat by the engaging member and having a diagonal bolt engaging hole for engaging with the diagonal bolt inserted therein; A preload adjusting nut coupled to the month bolt and applying a pressure to the upper and lower lantern fixing brackets in a direction opposite to each other to apply a preload to the buffer spring; And a bolt interference preventing hole formed in the tray bracket and the tray bracket so as to form a clearance with the month bolt.

In the present invention as described above, since the buffer springs are arranged in the form of a pyramid, it is possible to absorb both the vibrations acting in the horizontal direction and the vibrations acting in the vertical direction as well as the vibrations acting in multiple directions.

In addition, since the buffer spring is pre-compressed by the preload adjusting nut in advance to preload, noise can be prevented by minimizing the shaking of the cable tray due to small vibration in the usual times, and a large vibration The vibration energy can be rapidly extinguished because it can be repelled by a large force from the beginning.

In addition, since the bolt interference preventing holes are formed in the floating bracket and the tray base, there is an effect that when the cable tray and the tray base move in the horizontal direction by the vibration, it is possible to prevent the base bolt from hitting the floating bracket and the tray base .

Furthermore, according to the present invention, when the floating bracket is coupled to the tray pedestal by the latching part and the notch part constituting the fastening member and then the screw is coupled to the tab hole through the fastening hole, the operation of installing the floating bracket on the tray pedestal can be completed The assembly operation can be performed quickly and easily.

1 is a perspective view showing a chain stopper applied to a conventional communication cable tray;
Fig. 2 is a perspective view showing a shock absorber for a communication cable tray according to the present invention. Fig.
3 is a perspective view showing an enlarged main part of the present invention.
Fig. 4 is a front view of Fig. 3
Fig. 5 is a plan view of Fig. 3
6 is a right side view of Fig. 3
7 is an exploded perspective view of the present invention
FIG. 8 is an exploded perspective view showing a floating bracket, a bracket fixing bracket, a cushion spring, and the like, which are positioned on an upper portion of a tray support according to the present invention.
9 is a perspective view showing the floating bracket according to the present invention.
Fig. 10 is a perspective view of the bottom side of Fig. 9

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

As shown in FIGS. 1 to 10, the floating brackets 30 and 40 are provided at the upper and lower portions of the tray pedestal 20 by fastening members and the free side seat engaging portions 32a, 32b, 32c and 42a 42b, 42c are radially arranged on the edges of the floating brackets 30,

The floating brackets 30 and 40 positioned on the upper and lower sides can be formed in the same size and shape and can be installed vertically symmetrically with respect to the tray support 20, The sheet-engaging portions 32a, 32b and 32c (42a, 42b and 42c) can be integrally press-molded and the free-side seat engaging portions 32a, 32b and 32c (42a, 42b and 42c) ) 40 at a predetermined angle.

The fastening member includes notches 27 and 28 formed at ends of the tray pedestal 20; Quot; C " shaped latching pieces 37 (47) formed at the edges of the floating brackets 30 (40) and engaged with the notches 27 and 28; Fastening holes 35 and 45 formed in the floating brackets 30 and 40; Tapped holes (21) (23) formed on the upper and lower surfaces of the tray pedestal (20) so as to coincide with the centers of the fastening holes (35) and (45); And screws (100) (102) coupled to the tapped holes (21) (23).

The notch portions 27 and 28 may be formed vertically symmetrically on the ends of the tray pedestal 20 and the engaging pieces 37 and 47 are bent from the edges of the floating brackets 30 and 40.

Each of the fastening holes 35 and 45 and the screws 100 and 102 may be formed of a plate hole and a plate head bolt. In this case, the screws 100 and 102, It is possible to prevent the bolt head from coinciding with the surface of the floating bracket 30 (40) or slightly below the surface of the floating bracket 30 (40) when interlocked with the fastening holes (35)

The assembling of the floating brackets 30 and 40 and the tray bracket 20 is performed by first inserting the engaging pieces 37 and 47 formed on the floating brackets 30 and 40 into the notch 27 formed in the tray bracket 20, The screws 100 and 102 are fastened in the state that the center of the fastening holes 35 and 45 formed in the floating brackets 30 and 40 are aligned with the tab holes 21 and 23, The floating brackets 30 and 40 are fixed to the tray pedestal 20 when they pass through the holes 35 and 45 and are engaged with the tapped holes 21 and 23.

On the other hand, the free spring seats 34a, 34b, 34c (44a, 44b, 44c) for supporting the free ends 52a of the buffer springs 50a, 50b, 50c Side seat engagement portions 32a, 32b, 32c (42a, 42b, 42c).

As shown in FIGS. 4 and 6, in order to make the spring hole center lines La, Lb and Lc of the buffer springs 50a, 50b and 50c (60a, 60b and 60c) 50a, 50b, 50c) 60a, 60b, 60c are inclined to the floating brackets 30, 40 and the fixed ends 54a of the buffer springs 50a, 50b, 50c 74b, and 74c (84a, 84b, and 84c).

The buffer springs 50a, 50b, and 50c (60a, 60b, and 60c) may be arranged so that three of the buffer springs 50a, 50b, and 50c form a right triangle in plan view as in the example shown in FIG. And can be arranged symmetrically with respect to the tray base 20. In this case, the center lines La, Lb, and Lc of the buffer springs 50a, 50b, and 50c (60a, 60b, and 60c)

The fixed side seat engagement portions 72a, 72b and 72c (82a, 82b and 82c) radially disposed on the edges of the lunar fixing brackets 70 and 80 are fixed to the fixed side spring seats 74a and 74b And 74c (84a, 84b and 84c), and a dagger bolt engaging hole 76 (86) for inserting and connecting the diagonal bolt 26 is formed at the center of the diagonal fixing brackets 70 and 80 .

The fixed-side seat engagement portions 72a, 72b, and 72c (82a, 82b, and 82c) are bent at predetermined angles from the edges of the diagonal fixing brackets 70 and 80.

A coupling member for connecting the free side spring seats 34a, 34b and 34c (44a, 44b and 44c) and the free side seat engagement portions 32a, 32b and 32c (42a, 42b and 42c) The engaging members for connecting the sheets 74a, 74b and 74c (84a, 84b and 84c) and the stationary side seat engaging portions 72a, 72b and 72c (82a, 82b and 82c)

Such an engaging member is a rivet fastening portion formed at the centers of the free spring seats 34a, 34b and 34c (44a, 44b and 44c) and the fixed spring seats 74a, 74b and 74c (84a, 84b and 84c) Side sheet engaging portions 72a, 72b, 72c (82a, 82b, 82c) of the free-side seat engaging portions 32a, 32b, 32c (42a, 42b, 42c) And rivet holes 39a and 79a which are engaged with the rivet fastening portions 38a and 78a.

As shown in Fig. 8, the rivet fastening portions 38a and 78a have a tip end shape of, for example, a round bar shape, inserted into the rivet holes 39a and 79a, The end portions of the fastening portions 38a and 78a can be joined to each other by forming a hemispherical shape.

The fixed side spring sheets 74a, 74b and 74c (84a, 84b and 84c) and the free side spring sheets 34a, 34b and 34c (44a, 44b and 44c) have, for example, The fixed end 54a and the free end 52a of the buffer springs 50a, 50b and 50c (60a, 60b and 60c) are fixed to the stationary spring seats 74a, It is possible to prevent the free spring pieces 34a, 34b and 34c from being detached from the free spring sheets 34a, 34b and 34c and the buffer springs 50a, 50b and 50c, When positioning the spring members 60a, 60b and 60c on the fixed side spring sheets 74a, 74b and 74c (84a, 84b and 84c) and the free spring sheets 34a, 34b and 34c (44a, 44b and 44c) .

The fixed end 54a and the free end 52a of the buffer springs 50a, 50b and 50c (60a, 60b and 60c) are fixed to the fixed side spring seats 74a, 74b and 74c (84a, 84b and 84c) The fixed ends 54a of the buffer springs 50a, 50b and 50c (60a, 60b and 60c) and the free ends of the buffer springs 50a, 50b and 50c are welded to the free spring seats 34a, 34b and 34c It is possible to prevent the free end 52a from being separated from the fixed side spring sheets 74a, 74b and 74c (84a, 84b and 84c) and the free side spring seats 34a, 34b and 34c (44a, 44b and 44c) do.

The preload adjusting nuts 90 (92) for applying a preload to the buffer springs (50a, 50b, 50c) 60a, 60b, 60c by applying pressure to the upper and lower lunar fastening brackets 70, And the bolt interference preventing holes 36, 46, 22 and 24 forming the clearance with the diagonal bolts 26 are fixed to the floating brackets 30 and 40 and the tray bracket 20 As shown in FIG.

That is, when the buffer springs 50a, 50b, and 50c (60a, 60b, and 60c) are installed, they are compressed beforehand by the preload adjusting nuts 90 and 92 so that they can not be largely shaken by small vibration. And at the same time, when a large vibration acts on the buffer springs (50a, 50b, 50c) (60a, 60b, 60c), a repulsive force is generated from the beginning by a preload.

The bolt interference preventing holes 36, 46, 22 and 24 are formed in order to prevent the tray support 20 and the floating brackets 30 and 40 from coming into contact with the cross bolt 26 when moving in the horizontal direction. The inner diameters of the bolt interference preventing holes 36, 46, 22, and 24 are made larger than the outer diameters of the month bolt 26 so that a gap is formed between them.

In addition, when only the preload adjusting nuts 90 and 92 are provided on the month bolt 26, the preload adjusting nuts 90 and 92 can be easily loosened and loosened by the vibration, The preload adjusting nut 90 and the preload adjusting nut 90 are tightened by the lock nuts 110 and 112 after the adjustment of the preload adjusting nuts 90 and 92 by installing the lock nuts 110 and 112, .

In the drawings, reference numerals 120 and 122 denote washers, reference numeral 12 denotes a cable tray, and reference numeral 10 denotes a communication cable laid in a cable tray 12.

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

As shown in FIGS. 1 to 10, when vibration energy is directly transmitted from the outside to the cable tray 12 by an earthquake or the like, the cable tray 12 and the tray tray 20 are shaken in a complex direction, For the sake of convenience, the description will be made by separating the vibration applied in the vertical direction and the vibration applied in the horizontal direction.

At this time, when vibration energy acting in the vertical direction is cut by the tray pedestal 20, the buffer springs 50a, 50b, 50c (60a, 60b, 60c) And absorbs vibration energy.

That is, the fixed ends 54a of the cushioning springs 50a, 50b and 50c (60a, 60b and 60c) are fixed to the fixed spring sheets 74a, 74b and 74c (84a, 84b and 84c) And the free ends 52a of the buffer springs 50a, 50b and 50c (60a, 60b and 60c) are fixed to the free spring sheets 34a, 34b and 34c 44a, 44b, and 44c and the floating brackets 30 and 40, when the cable tray 12 and the tray pedestal 20 are vibrated in the vertical direction, The free ends 52a of the springs 50a, 50b, and 50c (60a, 60b, and 60c) move in the vertical direction to repeatedly perform compression and restoration to absorb vibration energy.

In this process, since the buffer springs 50a, 50b, and 50c (60a, 60b, and 60c) are installed in advance in the compressed state by the preload adjusting nuts 90 and 92, It absorbs vibration energy more responsively to vibration.

When vibration energy is applied to the cable tray 12 in the horizontal direction, the free ends 52a of the buffer springs 50a, 50b, 50c (60a, 60b, 60c) move in the horizontal direction Absorbing vibration energy.

At this time, since the buffer springs 50a, 50b, and 50c (60a, 60b, and 60c) are obliquely arranged in a pyramid shape, the vibration is absorbed while repeating compression and restoration, and the cable tray 12 and the tray pedestal 20 The swing bolt 26 is fixed to the floating bracket 30 by the bolt interference preventing holes 36, 46, 22 and 24 formed in the floating brackets 30 and 40 and the tray pedestal 20 when moving in the horizontal direction. (40) and the tray pedestal (20).

That is, since the inner diameters of the bolt interference preventing holes 36, 46, 22 and 24 are larger than the outer diameter of the month bolt 26, the floating brackets 30 and 40 and the tray support 20 So that it can freely move in the horizontal direction without bumping into the diagonal bolt 26.

On the other hand, when vibrational energy is transmitted from the ceiling slab to the Dalba bolt 26, the preload adjustment nuts 90 and 92 connected to the month bolt 26 and the month fixing brackets 70 and 80, The movable members 74a, 74b and 74c 84a, 84b and 84c are moved together with the diaphragm bolts 26 and the movement thereof is transmitted to the fixed ends 54a of the buffer springs 50a, 50b and 50c (60a, 60b and 60c) The buffer springs 50a, 50b, and 50c (60a, 60b, and 60c) repeatedly compress and recover, thereby absorbing the vibration energy.

10: Communication cable 12: Cable tray
20: tray base 21, 23: tab hole
26: month bolt 27,28:
30,40: Floating bracket
32a, 32b, 32c, 42a, 42b, and 42c:
34a, 34b, 34c, 44a, 44b, 44c:
35, 45: Fastening holes 36, 46, 22, 24: Bolt interference preventing holes
37, 47: engaging pieces 38a, 78a:
39a, 79a: rivet holes 50a, 50b, 50c, 60a, 60b, 60c:
52a: free end 54a: fixed end
La, Lb, Lc: Center line 70, 80: Bracket fixing bracket
72a, 72b, 72c, 82a, 82b, and 82c:
74a, 74b, 74c, 84a, 84b, and 84c:
76,86: month bar bolt fitting hole 90,92: preload adjusting nut
100, 102: screw 110, 112: lock nut
120, 122: Washer

Claims (3)

Floating brackets 30 and 40 provided at the upper and lower portions of the tray pedestal 20 by the fastening members and free side seat engaging portions 32a, 32b and 32c (42a, 42b and 42c) radially arranged at the edges;
Free spring seats 34a, 34b, 34c (44a, 44b, 44c) provided on the free side seat engagement portions 32a, 32b, 32c (42a, 42b, 42c) by engagement members;
The free ends 52a are disposed on the free spring seats 34a, 34b, and 34c (see FIG. 5) so that the center lines La, Lb, and Lc of the spring holes meet in a pyramid- Cushioning springs 50a, 50b, 50c (60a, 60b, 60c) supported by a pair of guide plates 44a, 44b, 44c;
Fixed spring seats 74a, 74b, 74c (84a, 84b, 84c) supporting the fixed ends 54a of the buffer springs 50a, 50b, 50c (60a, 60b, 60c);
The fixed side seat engagement portions 72a, 72b and 72c (82a, 82b and 82c) engaged with the fixed side spring sheets 74a, 74b and 74c (84a, 84b and 84c) (80) which is disposed at the center of the drum bolt engagement hole (76) (86) for insertion and engagement of the month bolt (26);
A pressure is applied to the upper and lower lid fastening brackets 70 and 80 in the directions opposite to each other to be applied to the buffer bolts 26 to apply a preload to the buffer springs 50a, 50b and 50c (60a, 60b and 60c) Preload adjusting nuts (90) (92); And
And bolt interference preventing holes 36, 46, 22, and 24 formed in the tray bracket 20 so as to form a clearance with the month bolt 26, Wherein the communication cable tray is provided with a plurality of communication cables. [2] The apparatus according to claim 1,
Notches (27) (28) formed at an end of the tray support (20);
Shaped engaging pieces 37 (47) formed at the edges of the floating brackets 30 (40) and engaged with the notches 27 (28);
Fastening holes 35 and 45 formed in the floating brackets 30 and 40;
Tapped holes (21) (23) coinciding with the fastening holes (35) and (45) and formed on the upper and lower surfaces of the tray pedestal (20); And
And a screw (100) (102) coupled to the tapped hole (21) (23). [2] The apparatus according to claim 1,
The rivet fastening portions 38a (38a) formed at the centers of the free spring seats 34a, 34b and 34c (44a, 44b and 44c) and the fixed spring seats 74a, 74b and 74c 78a); And
The rivet fastening portion 38a is formed on the free side seat engaging portions 32a, 32b, 32c (42a, 42b, 42c) and the stationary side seat engaging portions 72a, 72b, 72c (82a, 82b, 82c) And a rivet hole (39a) (79a) to be engaged with the recess (78a).

Images