Cable bridge for apartment building

Abstract

The present invention relates to a cable bridge for an apartment building, which is used for laying cables in the apartment building, and comprises: fixed bridge parts which are located on ceilings on both sides of a vehicle channel and on which cables are laid; a moving bridge part connecting the fixed bridge parts located on both sides of the vehicle lane, detachably coupled to the fixed bridge parts, and mounted to be movable up and down; when the total height of vehicles passing through the vehicle channel is larger than the height of the movable bridge part, the bridge driving part moves the movable bridge part upwards, so that the height of the movable bridge part is larger than the height of the fixed bridge part, and the vehicles can pass through the movable bridge part; the fixed support bar supports the cable by bending the cable such that the length of the cable is greater than the length of the movable bridge portion and the cable has an extra length, thereby preventing upward movement of the movable bridge portion from being restricted due to the length of the cable when the movable bridge portion moves upward.

Description

Technical Field

[0001] This invention relates to a cable tray for laying cables in apartment buildings. Background Technology

[0002] Typically, power cables are laid in apartment buildings, and to maximize space utilization, cables are installed by fixing cable trays to the ceiling and laying the cables in the cable trays.

[0003] The cable tray installed in apartment buildings is disclosed as a "ceiling-type cable tray for apartment buildings" in Korean Patent Publication No. 10-1967166 (published on April 9, 2019).

[0004] The aforementioned traditional ceiling-mounted cable trays for apartment buildings include: a tray body, and... A pair of curved side rails are symmetrically connected to each other via support plates and mounted and fixed to the ceiling; a cable alignment unit has a vertical plate protruding from the upper part of the support plate, with multiple cable placement plates arranged as free ends on one side of the vertical plate, the multiple cable placement plates having different heights and cable placement grooves, thereby the cable alignment unit having a structure for inserting or pulling out cables; an elastic unit is installed below each of the cable placement plates and elastically supports the lower part of the cable placement plate in a curved arc shape on the other side; an anti-sagging unit has a rotating plate hinged to the upper part of the support plate to support the end of the cable placement plate, with multiple protruding plates formed at equal intervals on the front surface of the rotating plate, each of the protruding plates having a helical hole, a height adjustment pin being fastened in each of the helical holes to move up and down according to the direction of rotation, and a mounting member hinged to the end of the height adjustment pin to support the end of each of the cable placement plates; and auxiliary placement units are respectively installed at the front and rear of the support plate to distribute the cable load concentrated on the cable alignment unit.

[0005] This design prevents safety accidents caused by friction between conventional cables, facilitates cable maintenance, and enables a stable installation structure.

[0006] However, existing apartment buildings use ceiling-mounted cable trays, which are installed by suspending cables from the ceiling. This reduces the floor height, making it difficult for emergency vehicles to access the building. As a result, in the event of a fire or other emergency, the inability of emergency vehicles to access the building leads to a long response time. Summary of the Invention

[0007] (1) Technical issues to be resolved

[0008] The present invention is proposed to solve the above-mentioned problems. The technical problem to be solved by the present invention is to provide a cable tray for apartment buildings, wherein a movable cable tray part is installed in the cable tray section of the vehicle passage in the underground parking lot, and the height of the movable cable tray part is increased so that emergency vehicles with a large total height can enter, thereby enabling rapid response to emergency situations.

[0009] In addition, the present invention aims to provide a cable tray for apartment buildings, which, by changing the height of the fixed support rod and the movable support rod, allows the cable laid in the movable cable tray section to have an additional length, thereby preventing the movement of the movable cable tray section from being restricted due to the cable when it moves upward.

[0010] In addition, the present invention aims to provide a cable tray for apartment buildings, wherein the articulated hanger that suspends and supports the movable cable tray from the ceiling has an articulated portion that folds or unfolds according to the vertical movement of the movable cable tray, thereby preventing the vertical movement of the movable cable tray from being restricted.

[0011] In addition, the present invention aims to provide a cable tray for apartment buildings, wherein cable tray hooks with inclined surfaces are provided at both ends of the movable cable tray portion, so that when the movable cable tray portion is engaged with the fixed cable tray portion, even if the position of the movable cable tray portion is inaccurate, it can be guided by the inclined surfaces and engaged precisely.

[0012] (2) Technical solution

[0013] To solve the above-mentioned technical problems, according to an embodiment of the present invention, a cable tray for apartment buildings is installed across the vehicle passage of an underground parking lot of an apartment building. It includes: a fixed cable tray section located on the ceiling on both sides of the vehicle passage, on which the cable is laid; a movable cable tray section connected to the fixed cable tray section located on both sides of the vehicle passage, detachably coupled to the fixed cable tray section, and installed to be movable vertically; and a cable tray drive section that, when the total height of vehicles passing through the vehicle passage is greater than the height of the movable cable tray section, moves the movable cable tray section upwards, so that the height of the movable cable tray section is higher than the height of the fixed cable tray section, allowing vehicles to pass. The movable cable tray section includes a plurality of fixed support rods, which support the cable by bending the cable, such that the cable is laid with a length greater than the length of the movable cable tray section, thus having an additional length to prevent the upward movement of the movable cable tray section from being restricted by the length of the cable.

[0014] The movable cable tray may include a movable support rod located between a plurality of fixed support rods and pressurizing and supporting the cable at a height different from that of the fixed support rods, so as to support the cable by bending the cable in a wavy shape, and the movable support rod can support the cable by changing its height, so as to unfold or bend the cable according to the up and down movement of the movable cable tray.

[0015] The movable cable tray includes a jointed bracket with joints, which supports the movable cable tray in a manner that allows it to be suspended from the ceiling and folded or unfolded according to the vertical movement of the movable cable tray.

[0016] The cable tray drive unit may include: a connecting line connected to the center of the movable cable tray unit; and a winch mechanism that drives the movable cable tray unit upward or downward by winding or unwinding the connecting line.

[0017] (3) Beneficial effects

[0018] According to the present invention, a movable cable tray that separates from the fixed cable tray and moves up and down is configured at the location of the vehicle passage that runs through the underground parking lot of the apartment building. By lifting the movable cable tray, emergency vehicles with a higher total height can enter, so that emergency vehicles can enter and exit and respond quickly to emergencies in the event of a fire or emergency.

[0019] Furthermore, according to the present invention, by using fixed support rods and movable support rods of different heights, the cables located in the vertically moving cable tray are bent in a wave shape and have extra length, and the cables are bent or unfolded when the moving cable tray moves, thereby preventing movement from being restricted due to length and preventing the cables with extra length from getting tangled.

[0020] Furthermore, according to the present invention, the movable bridge section is suspended from the ceiling and supported by a joint hanger having foldable and unfoldable joints, thereby preventing the movable bridge section from being restricted in its movement due to the hanger when moving up and down.

[0021] Furthermore, according to the present invention, the cable tray hook for connecting the movable cable tray portion and the fixed cable tray portion has a slope that gradually decreases outward, so that even if the engagement position of the movable cable tray portion is inaccurate, it can be guided by the slope and accurately engaged with the fixed cable tray portion. Attached Figure Description

[0022] Figure 1 This is a perspective view showing a cable tray for an apartment building according to an embodiment of the present invention.

[0023] Figure 2 This is a perspective view showing a cable tray for an apartment building according to an embodiment of the present invention, showing the movable cable tray section in a raised state.

[0024] Figure 3 This is a side view showing the movable cable tray section of an apartment building cable tray according to an embodiment of the present invention.

[0025] Figure 4 This is a side view showing the movable cable tray section of an apartment building cable tray according to an embodiment of the present invention, showing the state of the bent cable unfolded when the movable cable tray section moves upward.

[0026] Explanation of reference numerals in the attached figures

[0027] 110: Cable tray 110: Fixed cable tray

[0028] 111: Fixed side plate; 113: Fixed side connector

[0029] 115: Screw rod; 117: Cable fastener

[0030] 120: Mobile cable tray section; 121: Mobile side panel

[0031] 121a: Guide hole; 123: Moving side connector

[0032] 124: Fixed support rod; 125: Movable support rod

[0033] 126: Tension spring 127: Bridge structure

[0034] 130: Joint suspension 131: Joint region

[0035] 140: Cable tray drive unit; 141: Connecting cable

[0036] 143: Winch mechanism; 144: Drive motor

[0037] 145: Winch drum; 147: Steering roller

[0038] 200: Cable Detailed Implementation

[0039] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0040] like Figure 2 As shown, the apartment building cable tray 100 according to an embodiment of the present invention is used to support the cables 200 laid in the underground parking lot of the apartment building, which can prevent emergency vehicles such as ambulances or fire trucks from being unable to enter due to the reduced floor height caused by the cables 100 suspended on the ceiling.

[0041] On the other hand, the cable tray 200 can lift the portion of the vehicle passageway that crosses the underground parking lot, thereby preventing vehicles with a large overall height from being unable to enter the vehicle passageway.

[0042] like Figures 1 to 4 As shown, the cable tray 100 for apartment buildings according to an embodiment of the present invention may include a fixed cable tray section 110 and a movable cable tray section 120.

[0043] The fixed cable tray section 110 can be installed on both sides of the vehicle passage with the vehicle passage as the center and in the direction of crossing the vehicle passage. The fixed cable tray sections 110 located on both sides of the vehicle passage can be connected by the movable cable tray section 120 located in the vehicle passage.

[0044] The fixed cable trays 110 on both sides are at the same height from the ground and are closer to the ceiling than the ground, and are connected in a suspended manner by screw rods 115 installed on the ceiling.

[0045] In the fixed cable tray section 110, a pair of fixed side plates 111 are spaced apart and face each other, and the pair of fixed side plates 111 extend along the length direction of the cable 200.

[0046] In addition, a pair of fixed-side side plates 111 are arranged in a direction orthogonal to the cable 200 laying direction, and a plurality of fixed-side connectors 113 are spaced apart along the cable 200 laying direction, which can be configured in the form of a drainage ditch with an upper opening.

[0047] The movable cable tray section 120 is also provided with a pair of movable side plates 121 facing each other and separated from each other, so as to be connected to the fixed cable tray section 110. The pair of movable side plates 121 extend along the length direction of the cable 200.

[0048] Furthermore, a pair of movable side plates 121 are arranged in a direction orthogonal to the cable 200 laying direction, and a plurality of movable side connectors 123 are spaced apart along the cable 200 laying direction, which can be configured in the form of a drainage ditch with an upper opening.

[0049] On the other hand, in the fixed cable tray section 110, the cable 200 is placed on the upper part of the fixed side connector 113, and the cable 200 can be laid in such a way that the cable 200 is prevented from laterally detaching by the fixed side plates 111 located on both sides of the fixed side connector 113.

[0050] In the movable cable tray section 120, the cable 200 is placed on the upper part of the movable side connector 123, and the cable 200 can be laid in such a way that the cable 200 is prevented from laterally detaching by the fixed side plates 111 located on both sides of the fixed side connector 113.

[0051] At both ends of the movable cable tray section 120, cable trays 127 are respectively located on both sides and attached to the movable cable tray section 120. The cable tray hooks 127 connect the movable cable tray section 120 and the fixed cable tray section 110 in the form of being attached to the fixed side connector 113 that is closest to and faces the movable cable tray section 120 in each fixed cable tray section 110.

[0052] Here, the cable tray hook 127 is formed with an inclined surface, the height of which gradually decreases from the movable cable tray portion 120 outwards, so that even if the cable tray hook 127 is not precisely aligned with the fixed position of the fixed cable tray portion 110, the cable tray hook 127 is guided by the inclined surface as it moves downwards, and since the movable cable tray portion 120 is arranged between the fixed cable tray portions 110, the fixed cable tray portion 110 and the movable cable tray portion 120 can be precisely matched and connected between the fixed cable tray portions 110 and the movable cable tray portion 120.

[0053] On the other hand, the movable cable tray 120 can be connected to and supported by the fixed cable tray 110 via the cable tray hook 127. However, in order to prevent the load of the movable cable tray 120 from being transferred to the fixed cable tray 110, a joint link can be provided to suspend and fix the movable tray unit 120 to the ceiling.

[0054] The joint link is fixedly mounted on the ceiling at one end in a vertical position from the movable cable tray 120 toward the ceiling, and fixedly mounted on the side plate of the movable cable tray 120 at the other end.

[0055] The joint links are respectively installed on the movable side plates 121 on both sides of the movable bridge section 120, and the multiple joint links can be spaced apart along the length direction of the movable bridge section 110.

[0056] The joint link may include a joint portion 131, which is folded when the movable bridge portion 120 moves upward from the fixed bridge portion 110, and the central portion of the joint portion 131 is rotated to unfold when the movable bridge portion 120 moves from the upper part to the lower part where the fixed bridge portion 110 is located.

[0057] One end of the joint link connected to the ceiling is rotatably connected to a fixed bracket mounted on the ceiling, and the other end of the joint link connected to the movable side plate 121 is rotatably connected to the movable side plate 121 via a hinge pin.

[0058] On the movable cable tray 120, the cable 200 can be laid in a way that its length is longer than the length of the movable cable tray 120, so as to prevent the movement of the movable cable tray 120 from being restricted when the movable cable tray 120 moves up and down from the fixed cable tray 110 because the length of the cable 200 cannot be extended.

[0059] The cable 200 laid in the movable cable tray 120 is laid in a wavy shape along the length of the movable cable tray 120, and can be laid for a length longer than the length of the movable cable tray 120.

[0060] The cable 200 laid in the movable cable tray section 120 may have an additional length longer than the length of the movable cable tray section 120 to prevent the upward movement of the movable cable tray section 120 from being restricted due to the length of the cable 200 when it moves upward from the fixed cable tray section 110.

[0061] The fixed support rod 124 can be installed on the movable cable tray section 120 to support the cable 200 by bending, so that the cable has an additional length. The fixed support rod 124 is located at a different height from the fixed side connecting rod 113 of the fixed cable tray. Therefore, the cable 200 can be laid with an additional length that is longer than the length of the movable cable tray section 120 by bending.

[0062] The movable cable tray section 120 is located at a higher height than the fixed side connecting rod 113 of the fixed cable tray section 110, so that the cable 200 is laid while bending up and down in a wave-like shape, thereby allowing multiple fixed support rods 124 that support the cable 200 at the top to be installed spaced apart along the length of the movable cable tray section 120.

[0063] Alternatively, a movable support rod 125 can be installed between multiple fixed support rods 124. The movable support rod 125 applies downward pressure and supports the portion of the cable 200 located between the fixed support rods 124, so that the cable 200 placed on the fixed support rod 124 is pressed downward and bent, causing it to bend into a wavy shape.

[0064] The movable support rod 125 is installed across the movable side plate 121, and the movable side plate 121 has a guide hole 121a through it. The movable support rod 125 is movably connected to the guide hole 121a, so that the movable support rod 125 can move up and down on the movable side plate 121.

[0065] The movable support rod 125 can be supported by the tension spring 126. When the movable cable tray 120 moves upward, the movable support rod 125 moves upward, and the bent cable 200 is straightened out. When the movable cable tray 120 moves from the upper part to the lower part where the fixed cable tray 110 is located, the movable support rod 125 is forced to move downward, so that the unfolded cable 200 is pressed downward again and bent into a wave shape.

[0066] For example, the movable support rod 125 presses the cable 200 with the elastic force of the tension spring 126 so that the cable 200 is in a lower position than the fixed support rod 124, and when the movable cable tray part 120 moves upward, the cable 200 is pulled, the support rod 125 moves upward due to the unfolding force, and the tension spring is stretched, so that the elastic force accumulates in the tension spring 126.

[0067] In addition, when the tension spring 126 is stretched and accumulates elastic force, when the movable cable tray 120 moves downward from the upper position, the movable support rod 125 moves downward by the elastic force of the tension spring 126 and pressurizes the cable 200 to bend it and position it at a lower height than the fixed support rod 124, so that the cable has an extra length on the movable cable tray 120.

[0068] A tension spring 126 can be installed on each movable support rod 125, and the tension spring 126 connects the movable support rod 125 and the movable side plate 121 at both ends of each movable support rod 125.

[0069] On the other hand, the cable 200 located at the end of the fixed cable tray section 110 facing the movable cable tray section 120 is fixed by the cable fastener 117. When the movable cable tray section 120 moves up and down, the portion of the cable 200 located in the fixed cable tray section 110 is fixed, and only the length of the portion of the cable 200 located in the movable cable tray section 120 can be extended or retracted.

[0070] Additionally, a support rod roller (not shown) can be installed on the fixed support rod 124 and the movable support rod 125 to rotate around each of the fixed support rod 124 and the movable support rod 125 and support the cable 200. When the cable 200, which is bent into a wavy shape, unfolds or bends again according to the up and down movement of the movable bridge section 120, the support rod roller rotates on the fixed support rod 124 and the movable support rod 125 to minimize the friction between the fixed support rod 124 and the cable and the friction between the movable support rod 125 and the cable 200, thereby preventing the cable 200 from breaking.

[0071] like Figure 3 and Figure 4 As shown, the cable tray 100 for apartment buildings according to an embodiment of the present invention may include a cable tray drive unit 140.

[0072] With the fixed cable tray section 110 connected to the movable cable tray section 120, the cable tray drive section 140 can move the movable cable tray section 120 up and down relative to the fixed cable tray section 110.

[0073] In the cable tray drive unit 140, one end of the connecting line 141 is connected to the center portion of the movable cable tray unit 120, and the other end of the connecting line 141 is connected to the winch mechanism 143 that winds or unwinds the connecting line 141. The winch mechanism 143 can move the movable cable tray unit 120 upward by winding the connecting line 141, or move the movable cable tray unit 120 downward to the height of the fixed cable tray unit 110 by unwinding the wound connecting line 141.

[0074] In the winch mechanism 143, the other end of the connecting line 141 is connected to the winch drum 145, and when the winch drum 145 rotates by the rotation of the drive motor 144, the connecting line 141 is wound or unwound according to the direction of rotation, thereby allowing the movable bridge section 120 to move up and down.

[0075] On the other hand, the winch mechanism 143 can be located in the upper ceiling at a position corresponding to either side of the fixed cable tray 110 located on both sides, and a steering roller 147 is installed at a position perpendicular to the portion of the connecting line 141 in the movable cable tray 120. The connecting line 141 is connected to the center of the movable cable tray 120 in a vertical direction, and extends to the side of the fixed cable tray 110 via the steering roller 147 and is connected to the winch drum 145.

[0076] Here, the winch mechanism 143 can be directly attached to the ceiling at the vertical upper part of the center portion of the movable cable tray 120. However, when the movable cable tray 120 moves upward, the moving height is limited by the winch mechanism 143. Therefore, it is preferable to set the winch mechanism 143 at the location of the fixed cable tray 110.

[0077] The winch mechanism 143 can be operated by the operating unit, which can be located near the location of the mobile bridge section 120, so that the operator can operate the winch mechanism 143 through the operating unit to move the mobile bridge section 120 up and down.

[0078] The functions and effects of each component are explained below.

[0079] According to an embodiment of the present invention, a cable tray 100 for an apartment building has fixed cable tray sections 110 for laying cables on both sides of a vehicle passageway in the underground parking lot of the apartment building, and the fixed cable tray sections 110 on both sides of the vehicle passageway are connected to each other by movable cable tray sections 120.

[0080] The movable cable tray section 120 is provided with a cable tray hook 127, which has an inclined surface. The height of the inclined surface gradually decreases from both ends of the movable cable tray section 120 outwards along the length direction on the fixed cable tray section 110.

[0081] Additionally, the movable cable tray 120 can be supported by a joint hanger 130 with a curved joint 131 in the central part, which can be suspended from the ceiling. The fixed support rod 124 of the movable cable tray 120 is installed at a higher height than the fixed side connecting rod 113 that supports the cable 200 in the fixed cable tray 110, so that the cable 200 laid on the movable cable tray 120 has an additional length as the movable cable tray 120 moves up and down.

[0082] The fixed support rod 124 is installed to connect to the movable side plate 121 located on both sides, just like the movable side bracket, and multiple fixed support rods 124 are spaced apart and fixedly installed along the length of the movable bridge section 120.

[0083] Between the fixed support rods 124, the movable support rods 125 pressurize and support the cable 200 at a height lower than the fixed support rods 124, so as to pressurize the portion of the cable 200 located on the movable cable tray section 120, causing the cable 200 to bend in a wavy shape and have an additional length.

[0084] The movable support rod 125 can slide up and down in the guide hole 121a formed in the movable side plate 121, and the movable support rod 125 is supported and installed by the elastic force of the tension spring 126, so that the movable support rod 125 is at a lower height than the fixed support rod 124 in the movable bridge section 120.

[0085] The movable cable tray 120 is connected to the winch mechanism 143 via a connecting line 141, and the connecting line 141 is wound or unwound by the operation of the winch mechanism 143, so that the movable cable tray 120 is pulled upward or moved downward by its own weight.

[0086] At this time, since the winch mechanism 143 may be limited in height when it is located at the vertical upper part of the movable bridge section 120, the winch mechanism 143 is located at the position of the fixed bridge section 110, and the connecting line 141 can be connected to the winch mechanism 143 located at the upper part of the fixed bridge section 110 via the steering roller 147 at the vertical upper part of the movable bridge section 120.

[0087] In addition, the winch mechanism 143 can be operated by the operating unit, and the movable bridge section 120 can be moved upward or downward by controlling the drive motor 144.

[0088] The cable tray 100 for apartment buildings configured as described above according to an embodiment of the present invention can move the movable cable tray section 120 that crosses the vehicle passage upward by operating the operating unit in the event of a fire or emergency in the underground parking lot, when it is difficult to enter due to the high total height of emergency vehicles.

[0089] When the operating unit is operated, the winch mechanism 143 winds the connecting line 141 and pulls the connecting line 141. The connecting line 141 pulls the movable bridge section 120 located at the lower vertical position upward through the steering roller 147.

[0090] When the movable cable tray 120 is pulled upward, the joint 131 of the articulated hanger 130 folds, the cable tray hook 127 separates from the fixed cable tray 110, thereby moving the movable cable tray 120 upward.

[0091] When the movable cable tray 120 moves upward, the cable 200 located on the movable cable tray 120 is pulled along the direction of the fixed cable tray 110, and the cable 200, which is laid in a wavy shape, is straightened. The movable support rod 125 stretches the tension spring 126 by the force of straightening the cable 200, and moves to the upper part of the guide hole 121a of the movable cable tray 120, and supports the cable 200.

[0092] As described above, by separating the movable cable tray section 120 from the fixed cable tray section 110, the floor height of the vehicle passage is increased, allowing emergency vehicles with a higher total height to enter and exit the underground parking lot to respond to fires or emergencies.

[0093] On the other hand, when the fire or emergency ends, the winch mechanism 143 is operated by the operating unit, so that the movable bridge section 120 is connected to both sides of the vehicle passage and is stably supported.

[0094] When the winch mechanism 143 is operated, the connecting line 141 wound around the winch mechanism 143 is unwound, the movable bridge section 120 moves downward, and the joint section 131 of the folded articulated hanger 130 used to support the movable bridge section 120 on the ceiling is unwound and supports the movable bridge section 120.

[0095] At this time, the inclined surfaces of the cable tray hooks 127 located on both sides of the movable cable tray section 120 are supported by the fixed side connecting rods 113 located at the outermost end of the fixed cable tray section 110 facing the movable cable tray section 120, and the movable cable tray section 120 is positioned in the direction of the fixed cable tray section 110. Thus, even if the movable cable tray section 120 does not move down to the precise position between the fixed cable tray sections 110, the inclined surfaces of the cable tray 127 can guide the movable cable tray section 120 to be precisely placed between the fixed cable tray sections 110 on both sides.

[0096] Furthermore, when the movable cable tray section 120 moves downward, the tension of the cable 200 that applies tension to the fixed cable tray section 110 is released, and the movable support rod 125 installed between the fixed support rods 124 of the movable cable tray section 120 moves downward by the elastic force of the tension spring 126 and is located at a height lower than the fixed support rod 124, so that the cable 200 is bent into a wave shape, thereby supporting the cable 200 with extra length and preventing tangling.

[0097] Therefore, according to an embodiment of the present invention, the cable tray 100 for apartment buildings moves the movable cable tray section 120, which is arranged across the vehicle passage, upward through the cable tray drive section 140, thereby removing the access restriction of emergency vehicles with relatively high total height, and thus enabling a rapid response to fires or emergencies.

[0098] Furthermore, the present invention bends the cable 200 located on the movable cable tray 120 into a wavy shape by using a fixed support rod 124 and a movable support rod 125, so that the cable 200 has an extra length to prevent movement restriction caused by the length of the cable 200 when the movable cable tray 120 moves upward. Moreover, the cable 200 is bent into a wavy shape and supported on the movable cable tray 120, thereby preventing the cable 200 with extra length from twisting or tangling.

[0099] Furthermore, in this invention, the joint connecting rod that supports the movable bridge section 120 by being suspended from the ceiling is configured to be foldable through the joint section 131, thereby preventing the vertical movement of the movable bridge section 120 from being restricted.

[0100] In addition, by setting the guide roller 147, the present invention can position the winch mechanism 143 to the side of the movable bridge section 120 instead of vertically above it, thereby preventing the height of the movable bridge section 120 from being limited by the winch mechanism 143.

[0101] Furthermore, in this invention, the cable tray hook 127 connecting the movable cable tray portion 120 and the fixed cable tray portion 110 has an inclined surface, the height of which gradually decreases outward, so that even if the position of the movable cable tray portion 120 is not precisely located at the end of the fixed cable tray portion 110, when the movable cable tray portion 120 moves downward, the inclined surface of the cable tray hook 127 can fix the movable cable tray portion 120 to a precise position.

[0102] Although embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, but includes all modifications and alterations within the equivalent scope that are easily modified by those skilled in the art based on the embodiments of the present invention.

Claims

1. A cable tray for apartment buildings, installed across the vehicle passageway of the underground parking garage of the apartment building, characterized in that, include: The cable tray is located on the ceiling on both sides of the vehicle passage, and the cable is laid there. A movable cable tray unit connects to the fixed cable tray units located on both sides of the vehicle passageway, and is detachably coupled to the fixed cable tray units, and is installed to be vertically movable; and The cable tray drive unit moves the movable cable tray upwards when the total height of vehicles passing through the vehicle passage exceeds the height of the movable cable tray unit, so that the height of the movable cable tray unit is higher than the height of the fixed cable tray unit, allowing vehicles to pass. The movable cable tray includes multiple fixed support rods. The plurality of fixed support rods support the cable by bending the cable, so that the cable is laid with a length greater than the length of the movable cable tray, so as to prevent the upward movement of the movable cable tray from being restricted by the length of the cable.

Images