High-voltage arc isolation device for hoisting machinery

Abstract

The utility model discloses a high-voltage arc isolation device for hoisting machinery, which comprises a conical bracket and a fireproof insulating plate fixedly attached to the conical bracket, a rotating rod is transversely erected in the middle of the conical support, a pair of telescopic rods is connected to the rotating rod, a connecting plate is arranged at the lower ends of the telescopic rods, and a connecting hole is formed in the connecting plate; an adjusting lead screw is rotationally connected to the portion, located on one side of the rotating rod, of the conical support through a first rotating seat, the adjusting lead screw is obliquely arranged and sleeved with a screw sleeve, and the screw sleeve is rotationally connected with a second rotating seat arranged on one telescopic rod. The fireproof insulation cover has the advantages that the fireproof insulation cover can be formed above the hoisting machine, the problem that the highest position exceeds the safety distance when the hoisting machine performs hoisting operation under the high-voltage line is solved, the hoisting machine can perform hoisting operation normally under the high-voltage line, the high-voltage line is effectively prevented from being broken down, and the electric shock danger is avoided; meanwhile, the angle and the height can be easily adjusted, and the device is suitable for various complex environments and can be recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting operations of hoisting machinery, and particularly relates to a high-voltage arc isolation device for hoisting machinery. Background Art

[0002] At present, during railway construction, high-voltage lines are often encountered. Affected by the safety distance under the high-voltage lines, hoisting machinery cannot perform hoisting operations. At this time, if construction is to continue, the following situations will be faced: (1) The high-voltage lines affecting construction are relocated. This method has a large relocation cost, requires a certain construction period and site, and is not recyclable; (2) The high-voltage lines are protected or a protective shed is erected under the high-voltage lines. This method is affected by the site and the property rights unit, requires the cooperation of the power supply department for installation, lacks flexibility, and can only erect a protective shed in a relatively fixed place, with a relatively high construction cost and very troublesome demolition later; (3) Partial power outage of the high-voltage lines in the construction area is carried out. This method will have a certain impact on the surrounding electricity consumption, and due to the wide scope and scattered operation points of railway construction operations, it is difficult to implement frequent communication with the power supply department for power outage. Summary of the Invention

[0003] The purpose of the utility model is to provide a high-voltage arc isolation device for hoisting machinery in view of the defects of the prior art.

[0004] To achieve the above purpose, the utility model can adopt the following technical solutions:

[0005] The high-voltage arc isolation device for hoisting machinery of the utility model includes a conical bracket and a fireproof insulating board affixed to the conical bracket; a rotating rod is horizontally arranged in the middle of the conical bracket, a pair of telescopic rods are connected to the rotating rod, a connecting plate is arranged at the lower end of the telescopic rods, and a connecting hole is opened on the connecting plate; a adjusting screw rod is rotatably connected to the conical bracket on one side of the rotating rod through a first rotating seat, the adjusting screw rod is obliquely arranged, a thread sleeve is sleeved on it, and the thread sleeve is rotatably connected to a second rotating seat arranged on one of the telescopic rods.

[0006] Specifically, the rotating rod is a rectangular square tube, bearings are fixed to the conical brackets at both ends of the rotating rod through bearing seats, a rotating shaft coaxially fixed to the end of the rotating rod is arranged in the bearings to realize the rotation of the rotating rod; a first rotating shaft is arranged in the first rotating seat, and the outer end of the first rotating shaft is coaxially fixed to the upper end of the adjusting screw rod to realize the rotation of the adjusting screw rod; a second rotating shaft is arranged in the second rotating seat, the axis of the second rotating shaft is parallel to the axis of the rotating rod, and the outer end of the second rotating shaft is perpendicularly fixed to the outer wall of the thread sleeve to realize the rotation of the thread sleeve.

[0007] Further, positioning holes are evenly distributed along the length direction of the telescopic rod, and positioning bolts are inserted into the positioning holes, which can adjust the lengths of the two telescopic rods as needed and fix the adjusted lengths of the telescopic rods through the positioning bolts.

[0008] Further, the conical bracket is a quadrangular pyramid bracket to facilitate attaching a fireproof insulation board thereto.

[0009] The advantages of the present utility model are that the structure is simple, and the installation and operation are convenient. By installing this device on the top of the hoisting machinery, a fireproof insulation cover is formed above the hoisting machinery, overcoming the problem that the highest point exceeds the safe distance during the hoisting operation of the hoisting machinery under the high-voltage line, enabling the hoisting machinery to normally perform hoisting operations under the high-voltage line, effectively preventing the high-voltage line from being punctured and avoiding the risk of electric shock; at the same time, this device can also easily adjust the angle and height according to the use needs, is applicable to a variety of complex environments, and can be disassembled and reused after use. Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of the present utility model.

[0011] Figure 2 is Figure 1 the enlarged view of part A in

[0012] Figure 3 is Figure 1 the enlarged view of part B in Detailed Embodiment

[0013] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0014] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0015] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0016] Such asFigures 1 - 3 As shown in Figures 1 - 3 , the high-voltage arc isolation device for hoisting machinery of the present utility model includes a conical support 1 and a fireproof insulating board 2 attached to the conical support 1. To facilitate the installation and attachment of the fireproof insulating board 2, the conical support 1 is a quadrangular pyramid support, and the fireproof insulating board 2 is made of calcium silicate board, an A-class non-combustible material that can effectively block the breakdown of high-voltage lines, and is attached to the conical support 1 to form a roof structure.

[0017] A rotating rod 3 is horizontally spanned in the middle of the conical support 1. The rotating rod 3 is a rectangular square tube. To achieve the rotation of the rotating rod 3, bearings 5 are fixed on the conical support 1 at both ends of the rotating rod 3 through bearing seats 4. A rotating shaft 6 is arranged inside the bearing 5, and the rotating shaft 6 is coaxially fixed to the end of the rotating rod 3, so as to realize the rotation of the rotating rod 3 along the axis.

[0018] A pair of symmetrically arranged telescopic rods 7 are connected to the rotating rod 3. A connecting plate 8 is arranged at the lower end of the telescopic rod 7, and a connecting hole 9 is opened on the connecting plate 8. Through the connecting plate 8 and the connecting hole 9 thereon, this device can be easily installed on the top of the hoisting machinery, so as to form a fireproof insulating cover in the shape of a roof on the top of the hoisting machinery. When the hoisting machinery works under high-voltage lines, it can overcome the problem that the highest point exceeds the safe distance during the hoisting operation of the hoisting machinery under high-voltage lines, enabling the hoisting machinery to carry out normal hoisting operations under high-voltage lines, effectively preventing the breakdown of high-voltage lines and avoiding the risk of electric shock. In order to be able to adjust the lengths of the two telescopic rods 7 as needed and fix the adjusted lengths, a plurality of positioning holes 10 should be opened along the length direction on each telescopic rod 7, and positioning bolts 11 should be inserted into the positioning holes 10 in a matching manner. One positioning bolt 11 is provided for each telescopic rod 7. When the telescopic rod 7 is extended or retracted to the appropriate position, the positioning bolt 11 is inserted into one of the groups of positioning holes 10 that overlap on the inner and outer sleeves of the telescopic rod 7, so as to fix the telescopic length of the telescopic rod 7.

[0019] In addition, in order to enable the angle adjustment of the conical bracket 1, a first rotating seat 12 should also be provided on the conical bracket 1 on one side of the rotating rod 3, and an adjusting lead screw 13 is rotatably connected through the first rotating seat 12. The adjusting lead screw 13 is inclined, and a nut sleeve 14 is sleeved thereon. The nut sleeve 14 is rotatably connected to a second rotating seat 15 provided on one of the telescopic rods 7. Specifically, a first rotating shaft 16 in an inclined posture is provided in the first rotating seat 12, and the outer end of the first rotating shaft 16 is coaxially fixed to the upper end of the adjusting lead screw 13; a second rotating shaft 17 is provided in the second rotating seat 15, and the outer end of the second rotating shaft 17 is vertically fixed to the outer wall of the nut sleeve 14. The axis of the second rotating shaft 17 should be parallel to the axis of the rotating rod 3 and perpendicular to the axis of the nut sleeve 14 at the same time. When the adjusting lead screw 13 is screwed to shorten the distance of the adjusting lead screw 13 between the nut sleeve 14 and the first rotating seat 12, the adjusting lead screw 13 will pull down one side of the conical bracket 1, causing the conical bracket 1 to rotate at an angle relative to the rotating rod 3. At this time, since the length of the adjusting lead screw 13 between the nut sleeve 14 and the first rotating seat 12 is shortened, the adjusting lead screw 13 will rotate at an angle relative to the second rotating shaft 17, ensuring that the angle of the conical bracket 1 can be easily adjusted by screwing the adjusting lead screw 13, which is applicable to a variety of complex environments and can be disassembled and recycled after use.

Claims

1. A high-voltage arc isolation device for a hoisting machine, characterized in that: It includes a conical bracket and a fireproof insulation board fixed to the conical bracket; a rotating rod is horizontally arranged in the middle of the conical bracket, a pair of telescopic rods are connected to the rotating rod, a connecting plate is arranged at the lower end of the telescopic rod, and a connecting hole is formed in the connecting plate; a regulating lead screw is rotatably connected to the conical bracket on one side of the rotating rod through a first rotating seat, the regulating lead screw is arranged obliquely, a nut sleeve is sleeved on the regulating lead screw, and the nut sleeve is rotatably connected to a second rotating seat arranged on one of the telescopic rods.

2. The high-voltage arc isolation device for a hoisting machine according to claim 1, characterized in that: The rotating rod is a rectangular square tube, bearings are fixed to the conical brackets at both ends of the rotating rod through bearing seats, and a rotating shaft coaxially fixed to the end of the rotating rod is arranged in the bearings.

3. The high-voltage arc isolation device for a hoisting machine according to claim 1, characterized in that: A first rotating shaft is arranged in the first rotating seat, and the outer end of the first rotating shaft is coaxially fixed to the upper end of the regulating lead screw; a second rotating shaft is arranged in the second rotating seat, the axis of the second rotating shaft is parallel to the axis of the rotating rod, and the outer end of the second rotating shaft is vertically fixed to the outer wall of the nut sleeve.

4. The high-voltage arc isolation device for a hoisting machine according to claim 1, wherein: Positioning holes are uniformly distributed along the length direction of the telescopic rod, and positioning bolts are inserted into the positioning holes.

5. The high-voltage arc isolation device for a hoisting machine according to claim 1, wherein: The conical bracket is a quadrangular pyramid bracket.

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