CN110127532A - Isolation switch lifting device - Google Patents

Abstract

The invention provides a hoisting device for an isolating switch, which belongs to the technical field of electric power maintenance equipment, and includes a support rod, a fixing mechanism, a lap guide mechanism, a hoisting mechanism, a traction rope and a power mechanism, and the support rod is used to extend above the supporting structure; The fixing mechanism is connected to the lower part of the support rod, which is used to fix the lower part of the support rod on the working surface; the lap guide mechanism is set on the upper part of the support rod, and is used to overlap with the supporting structure; the hoisting mechanism is used to connect with the components of the isolating switch; traction The rope bypasses the lap guide mechanism, and one end is connected with the hoisting mechanism for pulling the movement of the hoisting mechanism; the power mechanism is arranged on the support rod, and is connected with the other end of the traction rope for pulling the movement of the traction rope. The present invention can complete the hoisting of the isolating switch through the cooperation of various components, and at the same time occupies a very small working space, has a sufficiently large safety distance, avoids power-off operations, is beneficial to shorten the construction period, and avoids adverse effects caused by power-off to users .

Description

Isolation switch lifting device

technical field

The invention belongs to the technical field of electric power maintenance equipment, and more specifically relates to a hoisting device for an isolating switch.

Background technique

In the current reconstruction and expansion project construction of 220kV substation, the installation or replacement of isolating switches is very common, and there are many of them.

The isolating switch is a switching device that is mainly used to "isolate power supply, switch operation, connect and cut off small current circuits", and has no arc extinguishing function. When the isolating switch is in the off position, there is an insulation distance between the contacts that meets the specified requirements and an obvious disconnection mark; current switching device. Generally used as a high-voltage isolating switch, that is, an isolating switch with a rated voltage above 1kV. Its working principle and structure are relatively simple, but due to the large amount of use and high reliability requirements, it is very important for the design, establishment and maintenance of substations and power plants. The impact on safe operation is greater.

Because most of the components of the isolating switch are heavy, the conventional installation or replacement method is to move and assemble after being hoisted by a car. And the movement range is relatively large. During hoisting, the safety distance between the boom and the live equipment and the main bus is often insufficient. In order to avoid the risk of electric shock, the hoisting must be carried out after the power is cut off. However, the preparation, application and approval of the power outage plan need to go through the coordinated research of multiple departments, which takes a long time, which usually causes delays in the construction period and affects the overall progress of the project. At the same time, the power outage construction will also cause adverse effects on users.

Contents of the invention

The object of the present invention is to provide a hoisting device for a disconnector switch to solve the technical problems existing in the prior art that the hoisting of the disconnector switch requires power-off work, delaying the construction period and causing adverse effects on users.

In order to achieve the above object, the technical solution adopted by the present invention is to provide a hoisting device for a disconnector, including a support rod, a fixing mechanism, a lap guide mechanism, a hoisting mechanism, a traction rope and a power mechanism, and the support rod is used to extend to the Above the structure; the fixing mechanism is connected to the lower part of the support rod to fix the lower part of the support rod on the working surface; the lap guide mechanism is set on the upper part of the support rod to overlap with the overlapping structure; the hoisting mechanism is used for the assembly of the isolating switch Connection; the traction rope bypasses the lap joint guide mechanism, and one end is connected with the hoisting mechanism for pulling the movement of the hoisting mechanism; the power mechanism is arranged on the support rod, and is connected with the other end of the traction rope for pulling the movement of the traction rope.

Further, in the aforementioned isolating switch hoisting device, a cavity is provided inside the support rod, and the middle part of the traction rope is passed through the support rod; the lower part of the support rod is used for the first wire hole for the traction rope to pass through, and the upper part of the support rod is used for The second wire passing hole through which the traction rope passes; the first pulley for connecting with the traction rope is provided at the parts where the support rod is provided with the first wire passing hole and the second wire passing hole.

Further, in the aforementioned hoisting device for a disconnector switch, the support rod is a telescopic rod structure.

Further, in the aforementioned isolating switch hoisting device, the support rod includes an outer tube, an inner tube and pins, the outer tube is connected to the fixing mechanism, and the inside is hollow; the lower end of the inner tube is used for sliding insertion into the outer tube, and there is a A plurality of pin holes; the pins are used for inserting into the pin holes, and the two ends are used for abutting against the upper end of the outer tube.

Further, in the aforementioned isolating switch hoisting device, the inner tube and the outer tube are both round tubes, and the two ends of the pin are provided with rollers for rotating connection with the pin and for abutting against the upper end of the outer tube; Turning handle for the inner tube.

Further, in the aforementioned isolating switch hoisting device, the overlapping guide mechanism includes an overlapping rod, a second pulley and a diagonal brace, and one end of the overlapping rod is connected to the upper part of the supporting rod for overlapping with the overlapping structure; the second pulley It is arranged at the end of the lap rod far away from the support rod, and is used for connecting with the traction rope; one end of the diagonal brace is connected with the upper end of the support rod, and the other end is connected with the end of the lap rod far away from the support rod.

Further, in the aforementioned isolating switch hoisting device, the fixing mechanism includes a first slideway and a second slideway. The ends are respectively connected with the pillars, and are used for sliding connection with the middle part of the support rod.

Further, in the aforementioned disconnecting switch lifting device, the fixing mechanism further includes a first sliding assembly and a second sliding assembly, the first sliding assembly is arranged at the lower part of the support rod, and is slidably connected with the first slideway and is used to fasten the support rod On the first slideway; the second slide assembly is arranged in the middle of the support rod, and is slidably connected with the second slideway and is used for fastening the support rod on the second slideway.

Furthermore, in the aforementioned hoisting device for a disconnector switch, the second sliding assembly is slidably connected to the middle part of the support rod along the axial direction of the support rod.

Further, in the aforementioned isolating switch hoisting device, the first slideway and the second slideway are arranged in parallel, and both the first slideway and the second slideway are fixedly connected to the pillar through the hoop; the first slide assembly is arranged on the support rod and the first bolt that is slidingly connected with the first slideway; the second slide assembly includes a sliding sleeve body that is slidably arranged on the support rod and a second bolt that is connected with the sliding sleeve body through a threaded structure and is slidingly connected with the second slideway .

Further, in the aforementioned isolating switch hoisting device, the isolating switch hoisting device also includes: a switch contact and a limit switch, the switch contact is arranged on the traction rope; the limit switch is connected with the power mechanism, and is used for After the limit switch, the power mechanism is controlled to stop the power output.

The beneficial effect of the hoisting device of the isolating switch provided by the present invention is that compared with the prior art, the present invention can complete the hoisting of the isolating switch through the cooperation of the support rod, the fixing mechanism, the lap guide mechanism, the hoisting mechanism, the traction rope and the power mechanism. Hoisting, at the same time, there are only support rods and lap guide mechanisms on the upper part, without traditional booms, which occupy a very small working space, and can have a large enough safety distance from live equipment and main busbars, and can operate under the condition of live substation. The installation and replacement of isolating switches can avoid power outage operations, which is conducive to saving time wasted in the preparation, application and approval of power outage plans, shortening the construction period, and avoiding the adverse effects of power outages on users.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

Fig. 1 is a schematic structural view of a hoisting device for a disconnector provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the overlapping guiding mechanism of the isolating switch hoisting device provided by the embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of the enlarged structure at point A in FIG. 1 .

Wherein, each reference sign in the figure:

10 - support rod;

11-the first wire hole; 12-the second wire hole; 13-outer tube;

14-inner tube; 15-pin; 16-roller; 17-rotating handle;

20 - fixing mechanism;

21-the first slideway; 22-the second slideway; 23-the first slide assembly; 24-the second slide assembly;

30-lap guide mechanism; 31-lap rod; 32-second pulley; 33-diagonal strut;

40-hoisting mechanism;

50-traction rope; 51-switch contacts;

60 - power mechanism;

70-limit switch;

81-cross arm; 82-pillar.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orientation, be constructed and operate in a certain orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

Please refer to Fig. 1 and Fig. 2 together, and now a kind of isolating switch hoisting device provided by the present invention will be described. The isolating switch hoisting device includes a support rod 10, a fixing mechanism 20, an overlapping guide mechanism 30, a hoisting mechanism 40, a traction rope 50 and a power mechanism 60, and the supporting rod 10 is used to extend to the top of the supporting structure; the fixing mechanism 20 and The lower part of the support rod 10 is connected to fix the lower part of the support rod 10 on the working surface; the lap guide mechanism 30 is arranged on the upper part of the support rod 10 to overlap with the supporting structure; the hoisting mechanism 40 is used to connect with the components of the isolating switch The traction rope 50 bypasses the lap guide mechanism 30, and one end is connected with the hoisting mechanism 40 for traction hoisting mechanism 40 movement; the power mechanism 60 is located on the support rod 10, and is connected with the other end of the traction rope 50 for traction Traction rope 50 moves. The hoisting mechanism 40 can be a hoisting piece used for connecting with hoisting objects such as components of a disconnector, such as a hook and a hoisting ring.

The hoisting of the isolating switch is mainly to lift the components of the isolating switch and install them on the base with the pillar 82. The upper part of the isolating switch generally has a cross arm 81 or a power line (used to connect the isolating switch and is not charged) and other bearings. build structure. Therefore, before hoisting the isolating switch, the fixing mechanism 20 can be fixed on the base (i.e., the working surface), so that the support rod 10 extends upward to the cross arm 81 or the power transmission line, and the lap guide mechanism 30 is placed on the cross arm 81 or the power transmission line. On the line, and make the traction rope 50 and the hoisting mechanism 40 sag after bypassing the overlapping guide mechanism 30. When hoisting the isolating switch, after the lifting mechanism 40 is connected with the components of the isolating switch, the power mechanism 60 is driven to pull the traction rope 50, and then the components of the isolating switch are hoisted to a predetermined position for installation. When it is necessary to remove the isolating switch, perform the opposite operation.

Compared with the prior art, the hoisting device for the isolating switch provided by the present invention can complete the hoisting of the isolating switch through the cooperation of the support rod 10, the fixing mechanism 20, the lap guide mechanism 30, the hoisting mechanism 40, the traction rope 50 and the power mechanism 60. Hoisting, at the same time, there are only support rods 10 and lap guide mechanism 30 on the upper part, without traditional booms, occupying a very small working space, and can have a large enough safety distance from live equipment and main busbars, and can be operated in substations with live electricity Install and replace the isolating switch to avoid power outage operations, which is conducive to saving the time wasted in the preparation, application and approval of power outage plans, shortening the construction period, and avoiding the adverse effects of power outages on users.

Please refer to Fig. 1 and Fig. 2 together. As a specific embodiment of the isolating switch lifting device provided by the present invention, a cavity is provided inside the support rod 10, and the middle part of the traction rope 50 is passed through the support rod 10; the support rod 10 The lower part is used for the first wire hole 11 that the traction rope 50 passes through, and the upper part of the support rod 10 is used for the second wire hole 12 that the traction rope 50 passes through; the support rod 10 is provided with the first wire hole 11 and the second wire hole 12. The positions of the wire holes 12 are all provided with first pulleys for connecting with the traction rope 50 . The traction rope 50 is arranged inside the support rod 10, which is beneficial to protect the traction rope 50 and prevent the traction rope 50 from being entangled with other components or structures.

Please refer to FIG. 3 , as a specific embodiment of the hoisting device for a disconnector provided by the present invention, the support rod 10 is a telescopic rod structure. Optionally, the support rod 10 includes an outer tube 13, an inner tube 14 and a pin 15. The outer tube 13 is connected to the fixing mechanism 20 and is hollow inside; the lower end of the inner tube 14 is used for sliding insertion into the outer tube 13, and along the A number of pin holes are provided; the pin 15 is used for inserting into the pin holes, and the two ends are used for abutting against the upper end of the outer tube 13 .

When it is necessary to adjust the height of the support rod 10, after selecting a suitable pin hole and inserting the pin 15, just put the pin 15 against the upper end of the outer tube 13, which is convenient for operation, and at the same time can achieve a stable and better load-bearing effect without hindering the Movement of the inner leash 50 .

Optionally, both the inner tube 14 and the outer tube 13 are round tubes, and the two ends of the pin 15 are provided with rollers 16 for rotational connection with the pin 15 and for abutting against the upper end of the outer tube 13; The turning handle 17 of the inner tube 14. This structure can rotate the inner tube 14 while ensuring load bearing, and then adjust the direction of the overlapping guide mechanism 30 conveniently.

Please refer to Fig. 1 and Fig. 2 together, as a specific embodiment of the isolating switch lifting device provided by the present invention, the overlapping guide mechanism 30 includes an overlapping rod 31, a second pulley 32 and a diagonal brace 33, and the overlapping rod 31 one end is connected with support rod 10 tops, is used for lapping with bearing structure; The upper end of the rod 10 is connected, and the other end is connected with the end of the lap rod 31 away from the support rod 10 .

The overlapping guide mechanism 30 is used to overlap with the cross arm 81 or the transmission line on the one hand, and provides the supporting force for lifting together with the fixing mechanism 20; There is a certain distance to prevent collision and friction between the hoisting mechanism 40 and the support rod 10 during lifting; in addition, it is also used to determine the position of the entire device to prevent the safety distance between the entire device and the live equipment and the main bus from being too small. When there is generally no overlapping structure such as a cross arm 81 or a transmission line on the top of the disconnector, the overlapping guide mechanism 30 can be suspended in the air and only play a guiding role.

Please refer to Fig. 1, as a specific embodiment of the isolating switch lifting device provided by the present invention, the fixing mechanism 20 includes a first slideway 21 and a second slideway 22, and the two ends of the first slideway 21 are respectively connected to the pillars 82, And it is used for sliding connection with the lower part of the support rod 10 ; The first slideway 21 and the second slideway 22 are used to facilitate the adjustment of the position and direction of the support rod 10 while stably transmitting the force.

Optionally, the fixing mechanism 20 further includes a first sliding assembly 23 and a second sliding assembly 24, the first sliding assembly 23 is arranged at the lower part of the support rod 10, and is slidably connected with the first slideway 21 and is used to fasten the support rod 10 On the first slideway 21 ; the second slide assembly 24 is arranged in the middle of the support rod 10 , and is slidably connected with the second slideway 22 and used for fastening the support rod 10 on the second slideway 22 .

Optionally, the second sliding assembly 24 is slidably connected to the middle of the support rod 10 along the axis direction of the support rod 10 to facilitate adjustment of the direction of the support rod 10 .

Optionally, the first slideway 21 and the second slideway 22 are arranged in parallel, and both the first slideway 21 and the second slideway 22 are fixedly connected to the pillar 82 through a hoop; the first slide assembly 23 is arranged on the support rod 10 and the first bolt that is slidingly connected with the first slideway 21; the second slide assembly 24 includes a sliding sleeve body that is slidably arranged on the support rod 10 and is connected with the sliding sleeve body through a threaded structure and is slidingly connected with the second slideway 22 the second bolt.

Please refer to Fig. 2, as a specific embodiment of the isolating switch hoisting device provided by the present invention, the isolating switch hoisting device also includes: a switch contact 51 and a limit switch 70, the switch contact 51 is arranged on the traction rope 50; The position switch 70 is connected with the power mechanism 60 and is used for controlling the power mechanism 60 to stop power output when the switch contact 51 touches the limit switch 70 . The power mechanism 60 may be an electric hoist. The limit switch 70 may be an electronic switch electrically connected to the power mechanism 60, or a mechanical switch connected to the switch of the power mechanism 60 through a mechanical transmission structure.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (11)

1. a kind of disconnecting switch hanging apparatus, which is characterized in that including support rod (10), fixed mechanism (20), bridging guide machine Structure (30), hoisting mechanism (40), traction rope (50) and power mechanism (60), support rod (10) take structure for extending to hold Side；Fixed mechanism (20) is connect with the support rod (10) lower part, for working face to be fixed in the support rod (10) lower part； Bridging guide mechanism (30) is set to the support rod (10) top, for taking structural overlap with holding；Hoisting mechanism (40) be used for The component of disconnecting switch connects；Traction rope (50) bypasses the bridging guide mechanism (30), and one end and the hoisting mechanism (40) it connects, for drawing the hoisting mechanism (40) movement；Power mechanism (60) is located on the support rod (10), and with institute The connection of traction rope (50) other end is stated, for drawing the traction rope (50) movement.

2. disconnecting switch hanging apparatus as described in claim 1, it is characterised in that: be equipped with sky inside the support rod (10) Chamber, traction rope (50) middle part are arranged in the support rod (10)；Support rod (10) lower part is used for the traction rope (50) the first cable-through hole (11) penetrated, support rod (10) top are used for the second cable-through hole that the traction rope (50) are pierced by (12)；The support rod (10) is equipped with equipped with the position of first cable-through hole (11) and second cable-through hole (12) and is used for The first pulley being connect with the traction rope (50).

3. disconnecting switch hanging apparatus as claimed in claim 1 or 2, it is characterised in that: the support rod (10) is telescopic Member structure.

4. disconnecting switch hanging apparatus as claimed in claim 3, which is characterized in that the support rod (10) includes:

Outer tube (13) is connect, inner hollow with the fixed mechanism (20)；

Inner tube (14), lower end is interior in the outer tube (13) for sliding plug, and is equipped with several pin holes in the axial direction；With And

Pin (15), for the pin hole grafting, and both ends with the outer tube (13) upper end for abutting.

5. disconnecting switch hanging apparatus as claimed in claim 4, it is characterised in that: said inner tube (14) and the outer tube (13) It is round tube, pin (15) both ends are equipped with for being rotatablely connected and being used for and the outer tube (13) with the pin (15) Hold the idler wheel (16) abutted；Said inner tube (14) is equipped with the rotational handle (17) for rotating said inner tube (14).

6. disconnecting switch hanging apparatus as described in claim 1, which is characterized in that the bridging guide mechanism (30) includes:

Lap bars (31), one end are connect with the support rod (10) top, for taking structural overlap with holding；

Second pulley (32) is set to the one end of the lap bars (31) far from the support rod (10), is used for and the traction rope (50) it connects；And

Hound (33), one end are connect with the support rod (10) upper end, and the other end and the lap bars (31) are far from the branch The end of strut (10) connects.

7. disconnecting switch hanging apparatus as described in claim 1, which is characterized in that the fixed mechanism (20) includes:

First slideway (21), both ends are connect with pillar (82) respectively, and for connecting with the support rod (10) lower slide；With And

Second slideway (22), both ends are connect with pillar (82) respectively, and for being slidably connected with the support rod (10) middle part.

8. disconnecting switch hanging apparatus as claimed in claim 7, which is characterized in that the fixed mechanism (20) further include:

First slide assemblies (23) are set to the support rod (10) lower part, and are slidably connected and are used in combination with first slideway (21) In the support rod (10) is anchored on first slideway (21)；And

Second slide assemblies (24) are set in the middle part of the support rod (10), and are slidably connected and are used in combination with second slideway (22) In the support rod (10) is anchored on second slideway (22).

9. disconnecting switch hanging apparatus as claimed in claim 8, it is characterised in that: second slide assemblies (24) with it is described It is slidably connected in the middle part of support rod (10) along the support rod (10) axis direction.

10. disconnecting switch hanging apparatus as claimed in claim 9, it is characterised in that: first slideway (21) and described Two slideways (22) are arranged in parallel, and first slideway (21) and second slideway (22) pass through anchor ear and the pillar (82) It is fixedly connected；First slide assemblies (23) are to be located on the support rod (10) and slide with first slideway (21) to connect The first bolt connect；Second slide assemblies (24) include sliding be set to the support rod (10) on sleeve body and with it is described The second bolt that sleeve body is connected by helicitic texture and is slidably connected with second slideway (22).

11. disconnecting switch hanging apparatus as described in claim 1, which is characterized in that the disconnecting switch hanging apparatus also wraps It includes:

Switch contact (51) is located on the traction rope (50)；And

Limit switch (70) is connect with the power mechanism (60), for opening when the switch contact (51) touch the limit It closes (70) and controls the power mechanism (60) stopping power output afterwards.