CN106744567A - A kind of lifting apparatus for overhauling tunnel cable - Google Patents

Abstract

The invention discloses a kind of lifting apparatus for overhauling tunnel cable, including channel-section steel bearing, the groove box and hanging scroll of fixed jack；The channel-section steel bearing right side bottom surface is provided with vertical slotted eye, symmetrical transposition hole is respectively equipped with the front and rear two side of channel-section steel bearing, the hanging scroll is inserted in symmetrical transposition hole, the front and rear vertical plates on both sides of the groove box left part is flexibly connected with hanging scroll both ends, and groove box bottom left end is withstood on the right side bottom surface of channel-section steel bearing.Simple structure of the present invention, assembling is quick, and the convenient movement in tunnel is overhauled to cable, can reduce labour intensity, it is ensured that construction safety, is raised labour efficiency.

Description

A lifting device for overhauling tunnel cables

technical field

The invention relates to the technical field of cable maintenance, in particular to a lifting device for maintenance of tunnel cables.

Background technique

After the tunnel cable has been put into operation for a long time, it is often found that the outer insulation layer of the cable is damaged, the outer insulation layer is broken down, the cable is dropped and other accidents during maintenance, resulting in power outages for maintenance. Analyze the cause of the accident: First, the alternating current passes through the cable and the air switch, and an alternating electromagnetic field will be generated around the cable and the air switch. When the temperature exceeds the normal range, some cables exceed the rated current carrying capacity due to the small cross-sectional area, the cable laying is not compact or there are eddy currents, etc., and the outer insulation layer of the cable is damaged and broken down and the cable is dropped. . The second is that due to the change of electrical load, the cable causes stretching fatigue cracking in the vibration bending part. The third is that the outer insulation layer of the cable caused by vibration is damaged by friction with the cable bracket. For the above reasons, only unplanned power outage maintenance can be performed on the tunnel cables, which will greatly reduce the reliability of power supply, reduce the quality of power supply service, and affect the economic benefits of enterprises.

The maintenance of the cable needs to raise the cable from the bridge to facilitate the maintenance work. During the maintenance of the cable, especially the lifting and maintenance of the middle cable and the upper cable of the bridge are extremely difficult, because there is no lifting support point at the bottom of the cable, the lifting device cannot be placed. The existing technology In the process of lifting the cable, a lifting tripod needs to be set up, and the cable is lifted with a spreader. The maintenance personnel lie on the lower side of the cable to work, and there may be vicious injury accidents where the fulcrum of the tripod tilts across the field, and it also brings many problems to the later maintenance of the cable. difficulty.

Contents of the invention

The technical problem to be solved by the present invention is to provide a lifting device for inspection and maintenance of tunnel cables, which can conveniently and quickly lift cables on the ground in the tunnel, and has the characteristics of simple structure, quick installation, and improved maintenance and construction efficiency.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a lifting device for maintenance tunnel cables, including a channel steel support, a box for fixing the jack and a hanging shaft; There are vertical slots, and symmetrical transposition holes are respectively provided on the front and rear side walls of the channel steel support, the hanging shaft is inserted into the symmetrical transposition holes, and the front and rear sides of the left end of the slot box The plate is movably connected with the two ends of the hanging shaft, and the left end of the lower part of the tank box is pushed against the right bottom surface of the channel steel support.

Further improvements to the present invention are:

The number of the channel steel supports is more than two and they are butted up and down. The channel steel supports are fixed with connecting plates and bolts, and the bottom of the channel steel supports at the lower part is provided with a base.

Wheels and wheel tie rods are added, and the lower end of the lower channel steel support is also provided with wheels and wheel tie rods.

A horizontal jack is added, and the horizontal jack is installed in the tank box through fastening bolts, and the pressure rod of the horizontal jack stretches out from the vertical slot on the channel steel support.

A cable support plate is added, the upper part of the cable support plate is provided with a plurality of arc grooves for accommodating cables, and the lower part of the cable support plate is provided with a sleeve movably connected with the top of the horizontal jack.

A distance-adjusting plate is added, and the distance-adjusting plate is symmetrically connected to the front and rear vertical plates at the left end of the lower part of the tank box through bolts, and the angle between the tank box and the channel steel support is adjusted by the lateral displacement of the distance-adjusting plate.

The beneficial effects produced by adopting the above-mentioned technical scheme are: the present invention arranges the channel steel support on the tunnel ground, installs a tank box movably connected with the channel steel support under the cable, and fixes a horizontal jack and a hanging shaft in the tank box Change the position through the transposition hole to change the angle between the channel box and the channel steel frame plate, and move the distance adjustment plate to fine-tune the angle, so that the horizontal jack can lift the cables above from different angles. The channel steel support is butted up and down, which can make the horizontal jack lift cables at different levels. The invention has the advantages of simple structure, fast assembly, convenient moving in the tunnel to repair the cables, can reduce labor intensity, ensure construction safety, and improve labor efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention, the channel box and the horizontal jack are fixed on the lower channel steel support as the base.

Fig. 2 is the left side view of the channel steel support in Fig. 1;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is a schematic structural view of the upper horizontal jack in a state of low left and right high;

Fig. 5 is a schematic structural view of the upper horizontal jack in a state of left high and right low;

Fig. 6 is a structural schematic diagram of the cable tray.

The components and their labels as shown in the figure: wheel tie rod 1, channel steel support 2, transposition hole 3, hanging shaft 4, wheel 5, vertical slot hole 6, connecting plate 7, pressure rod 8, slot box 9, cable Supporting plate 10, horizontal jack 11, fastening bolt 12, distance adjustment plate 13.

detailed description

Embodiment 1: A lifting device for overhauling tunnel cables, including a channel steel support 2, a slot box 9 for fixing the jack, and a hanging shaft 4; the bottom surface of the right side of the channel steel support 2 is provided with a vertical slot 6, The front and rear side walls of the channel steel support 2 are respectively provided with symmetrical transposition holes 3, and the hanging shaft 4 is inserted into the symmetrical transposition holes 3, and the front and rear vertical plates of the left end of the groove box 9 are It is movably connected with the two ends of the hanging shaft 4, and the left end of the lower part of the tank box 9 is pushed against the bottom surface of the right side of the channel steel support 2. The quantity of described channel steel support 2 is more than two and is up and down docking, between channel steel support 2 fix with connecting plate 7 and bolt, be positioned at the bottom of channel steel support 2 and be provided with base. Wheel 5 and wheel tie rod 1 are added, and the lower end of the channel steel support 2 of the lower part is also provided with wheel 5 and wheel tie rod 1. A horizontal jack 11 is added, and the horizontal jack 11 is installed in the tank box by fastening bolts 12. 9, the pressure rod 8 of the horizontal jack stretches out from the vertical slot 6 on the channel steel support 2. A cable support plate 10 is added, the upper part of the cable support plate 10 is provided with a plurality of arc grooves for accommodating cables, and the lower part of the cable support plate 10 is provided with a sleeve movably connected with the top of the horizontal jack 11 . Add a distance adjusting plate 13, said distance adjusting plate 13 is symmetrically connected on the front and rear side panels of the left end of the bottom of the tank box 9 by bolts, and adjust the distance between the tank box 9 and the channel steel support 2 through the lateral displacement of the distance adjusting plate 13 angle.

In order to prevent the upper horizontal jack 11 from overturning on the channel steel support 2 and ensure the stability of the horizontal jack 11, the base counterweight is installed on the lower channel steel support 2, or the lower channel steel support 2 is installed. Another horizontal jack 11 replaces the base, and the upper and lower two horizontal jacks 11 each do their best to facilitate the nearby lifting cable for maintenance.

Claims (6)

1. it is a kind of overhaul tunnel cable lifting apparatus, it is characterised in that：Including channel-section steel bearing（2）, fixed jack groove box （9）And hanging scroll（4）；The channel-section steel bearing（2）Right side bottom surface is provided with vertical slotted eye（6）, channel-section steel bearing（2）Front and rear two side On be respectively equipped with symmetrical transposition hole（3）, the hanging scroll（4）The symmetrical transposition hole of insertion（3）It is interior, the groove box（9）It is left The front and rear vertical plates on both sides and hanging scroll of end（4）Both ends are flexibly connected, groove box（9）Bottom left end withstands on channel-section steel bearing（2）The right side On the bottom surface of side.

2. it is according to claim 1 it is a kind of overhaul tunnel cable lifting apparatus, it is characterised in that：The channel-section steel bearing （2）Quantity in two or more and in docking up and down, channel-section steel bearing（2）Between use connecting plate（7）Fixed with bolt, positioned at bottom Channel-section steel bearing（2）Bottom be provided with base.

3. it is according to claim 2 it is a kind of overhaul tunnel cable lifting apparatus, it is characterised in that：Set up wheel（5）With Wheel pull bar（1）, the channel-section steel bearing of the bottom（2）Bottom be additionally provided with wheel（5）With wheel pull bar（1）.

4. it is according to claim 3 it is a kind of overhaul tunnel cable lifting apparatus, it is characterised in that：Set up Horizontal jack （11）, the Horizontal jack（11）By fastening bolt（12）Installed in groove box（9）It is interior, the press rods of Horizontal jack（8） From channel-section steel bearing（2）On vertical slotted eye（6）Stretch out.

5. it is according to claim 4 it is a kind of overhaul tunnel cable lifting apparatus, it is characterised in that：Set up cable supporting plate （10）, the cable supporting plate（10）Top is provided with multiple arc grooves for accommodating cable, the cable supporting plate（10）Bottom is provided with With Horizontal jack（11）Top be flexibly connected sleeve.

6. it is according to claim 5 it is a kind of overhaul tunnel cable lifting apparatus, it is characterised in that：Set up roll adjustment plate （13）, the roll adjustment plate（13）Groove box is symmetrically connected to by bolt（9）In the front and rear vertical plates on both sides of bottom left end, by roll adjustment Plate（13）Transverse shift regulating tank box（9）With channel-section steel bearing（2）Angle.