CN212323621U

CN212323621U - Cable rack

Info

Publication number: CN212323621U
Application number: CN202021206245.7U
Authority: CN
Inventors: 杨隆宇
Original assignee: North China Power Engineering Co Ltd of China Power Engineering Consulting Group
Current assignee: North China Power Engineering Co Ltd of China Power Engineering Consulting Group; North China Power Engineering Beijing Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-01-08
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses a cable rack, which comprises a fixed seat, wherein the fixed seat is arranged on the side wall of a wall body; the cable rack comprises a cable rack body, wherein the cable rack body comprises a support frame, the support frame is rotatably connected with the fixed seat, a wave rack is detachably connected to the support frame, and the wave rack realizes the fixation of a cable through a cable fixing component; the utility model discloses an in the scheme, the wave frame is adopted on cable frame upper portion, and the lower part is aluminum alloy H cross-section roof beam, and the upper portion of wave frame is used for bearing cable, increase air volume, and the lower part links to each other with the H roof beam and improves crossbeam bending stiffness, and it is fixed with the U-shaped hoop after the cable installation, and the cable frame root is rotatable, can stick up the wainscot when not installing the cable, saves a large amount of spaces for narrow and small cable tunnel, can supply personnel, equipment to move with, still can improve the interior radiating efficiency of tunnel.

Description

Cable rack

Technical Field

The utility model belongs to the technical field of the annex is erect to the circuit, especially, relate to a cable support.

Background

The cable is generally laid in the cable trench and the tunnel, and the cable frame is a component for erecting and fixing the cable in the tunnel. The typical design of the existing cable tunnel mainly adopts single angle steel as a cable frame, the cable frame belongs to a cantilever component without a symmetric axis after being installed, the bending bearing capacity is low, the adaptability to cables with different diameters and models is poor, and the upgrade planning of long-term cables cannot be considered; the vertical limbs influence the ventilation effect in the tunnel, further influence the cable current-carrying capacity, and are not favorable to satisfying the ventilation requirement in the narrow corridor.

As shown in fig. 1, for a single angle steel and a single-side installation cable rack which are widely used at present, an angle steel rack is generally formed by angle steel sectional materials through welding or connecting or splicing by fasteners, and the cable rack is used in many early stages, but along with the continuous development of electric power industry, the angle steel cable rack is not suitable for the development requirements of modern electric power, and a plurality of defects are exposed.

Firstly, the cable tunnel is located underground, is influenced by construction cost, construction difficulty and existing underground structures, is generally narrow in space, enables the remaining space in the narrow cable tunnel to be narrower when cables are laid in the later period, and brings obstacles and inconvenience to further laying of the cables in place and movement of personnel in a ditch.

Secondly, the cable needs to be placed on a cable frame before being fixed and then fixed by the cable hoop. Because angle steel cable frame top surface is the plane, after the cable is placed, when fixed before easy landing, especially when placing many cables on a support, the cable interval is difficult to keep unanimous all the time on every cable frame, influences the cable heat dissipation, and is also pleasing to the eye, makes follow-up fixed operation work load increase greatly.

And thirdly, because the section of the angle steel is asymmetric to the bending axis, the sinking amount of one side without a vertical limb behind the bearing cable is larger, the initial defect ratio is larger than that of the symmetrical section component, and the bearing capacity is lower under the same sectional area.

Fourthly, the cable is a main heat source in the cable tunnel, and the heat on the surface of the cable needs to be taken away through tunnel ventilation, so that the working temperature of the cable is not over-limit. The bending resistance of the section of the angle steel of the existing angle steel bracket is mainly realized by increasing the length and the thickness of a vertical limb, so that the design increases the resistance and reduces the ventilation effect for the air flow in a tunnel.

Meanwhile, if the long-term planning is that the wall surfaces on both sides are provided with the cable racks, and only one side is provided with the cable at present, the vacant cable rack on the other side affects the walking of personnel and equipment transportation in the tunnel and also affects the ventilation volume in the tunnel. Therefore, after the existing angle steel frame is installed, the existing angle steel frame cannot be adjusted according to the number and weight of cables, and after replacement and upgrading of long-term cables are considered, the economical efficiency and the space utilization rate are low.

Therefore, an innovative device is urgently needed, and particularly, a cable frame capable of adjusting the bearing capacity according to the diameter, weight and loop number of cables can meet the requirement of life cycle after installation, is good in ventilation and attractiveness, and can meet the installation requirements of different cable models.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a cable frame promptly, its upper portion adopts the wave frame, and the lower part is aluminum alloy H cross-section roof beam (being the backup pad). The upper part of the wavy frame is used for supporting cables and increasing ventilation volume, and the lower part of the wavy frame is connected with the H-shaped beam to improve the bending rigidity of the beam. The cable is fixed by a U-shaped hoop after being installed. The cable frame root is rotatable, can stick up the wainscot when not installing the cable, saves a large amount of spaces for narrow and small cable tunnel, can supply personnel, equipment to move usefulness, still can improve the interior radiating efficiency of tunnel, and wave frame can dismantle with the backup pad and be connected simultaneously, consequently can satisfy the installation of different cable models according to cable diameter, weight, the cable frame of return circuit number adjustment bearing capacity, can satisfy life cycle service requirement again after the installation, compromise ventilate and pleasing to the eye.

The technical means adopted by the utility model are as follows.

A cable rack comprises a fixed seat, wherein the fixed seat is arranged on the side wall of a wall body; the cable frame body, the cable frame body contains the support frame, the support frame with the fixing base rotates to be connected, can dismantle on the support frame and be connected with the wave frame, the wave frame passes through the fixed subassembly of cable and realizes the fixed of cable.

Furthermore, the wave frame comprises two wave support bars arranged at intervals and a connecting plate which is positioned below the wave support bars and is fixedly connected with the wave support bars; clamping grooves are formed in two sides of the connecting plate, and the clamping grooves are detachably clamped on the upper edge of the supporting frame.

Furthermore, the support frame is provided with a connecting surface, and the connecting surface and the connecting plate are provided with through holes in one-to-one correspondence.

Furthermore, a plurality of reinforcing struts are arranged between the wave supporting strips and the upper edges of the two side walls of the connecting plate at intervals.

Further, the wave support bars, the connecting plates and the reinforcing struts enclose a hollow area A.

Furthermore, a fixed shaft is arranged on the fixed seat, a rotating shaft is arranged on the supporting frame, and the rotating shaft is sleeved on the fixed shaft to realize rotating connection.

Furthermore, the fixed seat is provided with a limit block, and the non-cantilever end of the support frame is provided with an overhanging tooth; when the rotating shaft is sleeved on the fixed shaft, the extending teeth are located below the limiting blocks, and when the supporting frame rotates to a specific angle, the extending teeth are contacted with the limiting blocks to abut against the limiting blocks to limit and fix the supporting frame.

Further, the cable fixing component mainly comprises a cable hoop, a gasket and a nut; the gasket is provided with a through hole which is matched with the connecting surface and the through hole on the connecting plate; and the two connecting ends of the cable hoop are clamped outside the cable and sequentially penetrate through the through hole and the through hole, and the cable is locked and fixed through the nut.

Further, the cable hoop is made of FRP materials.

Furthermore, the support frame is made of aluminum alloy, and the wave frame is made of FRP (fiber reinforced plastic).

The utility model discloses produced beneficial effect as follows.

Firstly, the cable frame adopt FRP material, and metal material such as structural steel, aluminum alloy is lighter than the dead weight, deformability is stronger, intensity is higher.

And secondly, splitting the cable frame into two parts, and connecting the two parts into a whole through the clamping groove and the cable hoop. The cable tunnel long-term planning method can flexibly adapt to the requirements of cable tunnel long-term planning, and can adapt to cables with different diameters, weights and numbers under the condition that the part B fixed on the wall body is not replaced.

And thirdly, hollow and variable cross-section designs are adopted according to the structural stress characteristics, so that the dead weight of the cable frame is reduced, and the effective bearing capacity is improved.

Drawings

Fig. 1 is a schematic view of an installation structure of an existing angle steel cable rack.

Fig. 2 is the schematic view of the overall installation structure of the present invention.

Fig. 3 is the utility model discloses the overall installation structure split sketch map.

Fig. 4A-4D are schematic views of the supporting frame of the present invention.

Fig. 5 is a schematic view of the split of the connection structure of the support frame and the fixing base of the present invention.

Fig. 6A-6B are schematic views illustrating the horizontal position of the support frame of the present invention.

Fig. 7A-7B are schematic views illustrating the supporting frame of the present invention in a vertical position.

Figure 8A is the utility model discloses wave frame and cable installation schematic diagram.

Fig. 8B is a side view of the wave frame structure of the present invention.

Fig. 8C is a perspective view of the wave frame structure of the present invention.

Fig. 9 is a schematic view of the cable fixing assembly of the present invention.

Description of the figure numbers:

fixing seat 10

Stopper 101

Fixed shaft 102

Cable rack body 20

Supporting frame 201

Overhanging tooth 2011

Connecting surface 2012

Rotating shaft 2013

Wave frame 202

Wave supporting strip 2021

Connecting plate 2022

Card slot 20221

Reinforcement strut 2023

Cable fixing assembly 30

Cable clamp 31

Gasket 32

Nut 33

And a cable 40.

Detailed Description

As shown in fig. 2 to fig. 3, the cable rack of the present invention mainly includes a fixing base 10, a cable rack body 20 and a cable fixing assembly 30. The fixed seat 10 is arranged on the side wall of the wall body; the cable rack body 20 comprises a support frame 201, the support frame 201 is rotatably connected with the fixed seat 10, and the rotation angle can be adjusted according to the field condition, preferably 0-90 degrees; the supporting frame 201 is detachably connected with a wave frame 202, a cable is installed in a groove in the wave frame 202, and the cable is fixed on the cable frame body 20 through a cable fixing component 30. Cable rack under the condition of non-user state, the support frame can upwards rotate, makes it parallel with the wall body, will increase a lot of construction space in the cable pit or cable tunnel like this, improved the efficiency of construction greatly, simultaneously, still provide a support frame and wave frame detachable connection structure, the wave frame can match the cable of different models, can adapt to the requirement of cable tunnel long-term planning in a flexible way, under the condition of not changing the cable frame body that is fixed in the wall body, the cable of different diameters of adaptation, weight, radical. Simultaneously the utility model discloses still adopt fretwork, variable cross section design according to the structure atress characteristics, reduce the cable frame dead weight, improve effective bearing capacity.

The following describes each component of the present invention in detail with reference to examples.

Please refer to fig. 4A-4D, which are schematic structural views of the cable rack body according to the present invention. As shown in the drawings, the supporting frame 201 is preferably an aerial H-section steel with a variable cross-section, the supporting frame 201 includes a connecting surface 2012, the connecting surface 2012 forms a hollow structure with an upper edge 2014 and a lower edge 2015 of the supporting frame 201, and the connecting surface 2012 is provided with a plurality of strip-shaped through holes 20121. A rotating shaft 2013 is embedded in one end (preferably, the end with the larger cross section) of the supporting frame 201, and the connecting edge between the rotating shaft 2013 and the supporting frame 201 is a hollow structure, so that the stability of the supporting frame is improved. An overhanging tooth 2011 extends outwards from the non-cantilever end (i.e. the end provided with the rotating shaft 2013) of the supporting frame 201.

Further, referring to fig. 5, the fixing base 10 includes a first fixing plate 103 and a second fixing plate 104 arranged at an angle, the first fixing plate 103 is fixedly installed on a sidewall of a wall, the second fixing plate 104 is provided with a fixing shaft 102 facing upward and parallel to the first fixing plate 103, the fixing shaft 102 is matched with the rotating shaft 2013, and the supporting frame 201 is rotatably connected with the fixing base 10 through the fixing shaft 102. Meanwhile, a limit block 101 is installed on the first fixing plate 103, preferably, the installation height of the limit block 101 is higher than that of the fixing shaft 102, and the shape of the limit block 101 is matched with that of the extended teeth 2011, so that the support frame 201 can rotate around the fixing shaft.

Fig. 6A-6B are schematic diagrams illustrating the support frame of the present invention in a horizontal state and fig. 7A-7B are schematic diagrams illustrating the support frame of the present invention in a vertical state. In a working state, the support frame 201 is in a horizontal state, and at the moment, the extended teeth 2011 at the non-cantilever end of the support frame are released from the limiting block 101 and limited by the limiting block 101, so that the support frame 201 is kept horizontal; when a large space is required for maintenance or other reasons, the support frame is rotated upward around the fixed shaft 102. Preferably, when the supporting frame 201 rotates upwards by 90 degrees and is vertical to the ground, the moving space in the cable channel is expanded to the maximum extent, and convenience is provided for moving of maintenance personnel in the channel and entering of maintenance equipment.

As shown in fig. 8A-8B, further, the present invention further provides a wave frame 202 detachably connected to the upper edge 2014 of the supporting frame 201, wherein the wave frame 202 includes two wave supporting bars 2021 disposed at intervals and a connecting plate 2022 disposed below the wave supporting bars 2021 and fixedly connected thereto. Preferably, the spacing distance between the two wave support bars 2021 is matched with the width of the support frame, and the connecting plate 2022 is provided with through holes (not labeled in the figure) corresponding to the connecting surfaces 2012 one by one; two sides of the connecting plate 2022 are provided with clamping grooves 20221, and the clamping grooves 20221 are detachably connected to the upper edge 2014 of the supporting frame 201.

Furthermore, a plurality of reinforcing struts 2023 are arranged between the upper edges of the two side walls of the wave-shaped supporting strip 2021 and the connecting plate 2022, so that the sectional area is effectively utilized, and the bearing capacity is increased. Preferably, the reinforcing struts 2023 are disposed in the depressions of the undulating support strip 2021. Meanwhile, a longitudinal hollow area A is formed among the wavy support bars 2021, the connecting plates 2022 and the reinforcing struts 2023, so that the dead weight is reduced, the air flow blockage is reduced, the effective bearing capacity of the cable rack is improved, and the ventilation effect of the tunnel is enhanced.

Referring to fig. 8C, the installation of the wave frame and the cable of the present invention is schematically illustrated. The cable 40 is preferably mounted in a recess of the undulating support strip 2021. The cable 40 is fixedly connected with the cable holder body 20 through the cable fixing assembly 30.

Please refer to fig. 9, a schematic diagram of the cable fixing assembly of the present invention. The cable securing assembly 30 includes a cable ferrule 31, a spacer 32, and a nut 33. The gasket 32 is provided with through holes 321, and the through holes 321 are matched with the through holes on the connecting surface 2012 and the connecting plate 2022 and correspond to the through holes one to one.

When the cable clamp is used, the cable clamp 31 is clamped above the cable 40, the connecting end 311 of the cable clamp 31 sequentially penetrates through the through holes in the wave frame 202 and the supporting frame 201 and the through hole 321 in the gasket 32, and finally the cable clamp is fixed through the nut 33.

Preferably, the support frame 201 is made for the aluminum alloy material, wave frame 202 with the cable hoop 31 is the FRP material, the utility model discloses make full use of two kinds of material density of FRP and aluminum alloy characteristics little, that intensity is high.

The FRP material in the utility model is a composite material which is made of epoxy resin and E glass fiber as main raw materials. Compared with the metal materials such as structural steel and aluminum alloy, the material has lighter self weight, stronger deformation capability and bending rigidity (namely the capability of resisting bending deformation of an object) and higher strength.

The utility model discloses an in the scheme, wave frame is adopted on cable frame upper portion, and the lower part is aluminum alloy H cross-section roof beam. The upper part of the wavy frame is used for supporting cables and increasing ventilation volume, and the lower part of the wavy frame is connected with the H-shaped beam to improve the bending rigidity of the beam. The cable is fixed by a U-shaped hoop after being installed. The root of the cable frame is rotatable, the cable frame can be stuck to a wall when a cable is not installed, a large amount of space is saved for a narrow cable tunnel, personnel and equipment can be moved for use, and the heat dissipation efficiency in the tunnel can be improved. To sum up, the utility model discloses compare in prior art and compare following beneficial effect has.

1. The hollow part of the wave frame made of the FRP material reduces the dead weight, reduces the blockage to the air flow, improves the effective bearing capacity of the cable frame, and enhances the ventilation effect of the tunnel. And the wave frame is not hollowed out only at the gravity center position of each cable, so that the sectional area is effectively utilized, and the bearing capacity is increased.

2. Because the wave frame of FRP material and the support frame of aluminum alloy material are the components of a whole that can function independently structure, after the support frame was installed to the wall body, can be according to cable diameter, radical, install the wave frame of different shapes and come the adaptation, and need not change the support frame on the wall body.

3. Because the wave frame and the supporting plate are a stressed whole body after being installed through the clamping grooves, the size of a longitudinal hollow area A of the wave frame can be adjusted when the wave frame is processed, the sectional area and the bending rigidity of the whole cable frame are changed under the condition that the supporting frame is kept unchanged, and cables with different weights can be installed.

4. Because the non-cantilever end of the support frame adopts the rotating shaft, the cable frame can be switched between a vertical state and a horizontal state, when no cable is laid, the support frame can be directly erected to be attached to a wall, and the ventilation area of a tunnel and the movement space of personnel and equipment are increased.

5. The supporting plate adopts a variable-height H section, the lower section of the supporting plate is higher close to the root (namely, the non-cantilever end), the lower section is consistent with the stress characteristic of the cantilever beam, the section height is effectively utilized, the wind shielding area is reduced, and the dead weight of the cable frame is reduced.

6. Because wave frame, cable hoop all adopt FRP material, flatter cross-section, more smooth, do not hinder the cable epidermis when laying the cable in-process and vertically dragging the cable along the cable, also more firm after the fixed.

Claims

1. A cable holder, comprising:

the fixing seat (10), the said fixing seat (10) is mounted on sidewall of wall;

the cable frame comprises a cable frame body (20), wherein the cable frame body (20) comprises a supporting frame (201), the supporting frame (201) is connected with the fixing seat (10) in a rotating mode, a wave frame (202) is detachably connected to the supporting frame (201), and the wave frame (202) is used for fixing a cable through a cable fixing component (30).

2. The cable rack according to claim 1, wherein the wave rack (202) comprises two wave supporting bars (2021) arranged at intervals and a connecting plate (2022) arranged below and fixedly connected with the wave supporting bars (2021);

clamping grooves (20221) are formed in two sides of the connecting plate (2022), and the clamping grooves (20221) are detachably clamped on the upper edge of the supporting frame (201).

3. A cable holder as claimed in claim 2, wherein the supporting frame (201) is provided with a connecting surface (2012), and the connecting surface (2012) and the connecting plate (2022) are provided with through holes corresponding to each other.

4. A cable holder as claimed in claim 2, characterized in that a plurality of reinforcement struts (2023) are arranged at intervals between the undulating support strip (2021) and the upper edges of the two side walls of the connecting plate (2022).

5. A cable holder according to claim 4, characterized in that the corrugated support strip (2021), the connecting plate (2022) and the reinforcement struts (2023) enclose a hollow area A.

6. The cable rack as claimed in claim 1, wherein the fixing base (10) is provided with a fixing shaft (102), the supporting frame (201) is provided with a rotating shaft (2013), and the rotating shaft (2013) is sleeved on the fixing shaft (102) to realize rotational connection.

7. The cable holder as claimed in claim 6, wherein the fixed seat (10) is provided with a stop block (101), and the non-cantilever end of the supporting frame (201) is provided with an extending tooth (2011);

when the rotating shaft (2013) is sleeved on the fixed shaft (102), the extending teeth (2011) are located below the limiting block (101), and when the supporting frame (201) rotates to a specific angle, the extending teeth (2011) are contacted with the limiting block (101) to abut against the limiting block to limit and fix the supporting frame.

8. A cable holder as claimed in claim 3, wherein the cable fixing assembly (30) essentially comprises a cable ferrule (31), a spacer (32) and a nut (33);

the gasket (32) is provided with a through hole which is matched with the through holes on the connecting surface (2012) and the connecting plate (2022);

two connecting ends of the cable hoop (31) are clamped outside the cable and sequentially penetrate through the through hole and the through hole, and the cable is locked and fixed through the nut (33).

9. A cable holder as claimed in claim 8, wherein the cable ferrule (31) is of FRP material.

10. A cable holder as claimed in any one of claims 1 to 6, wherein the support frame (201) is made of an aluminium alloy and the wave holder (202) is made of FRP.