Safety support for assisting maintenance of main transformer

Abstract

The utility model belongs to the technical field of main transformer maintenance, particularly relates to a safety support for assisting in main transformer maintenance, and aims to solve the problems of poor stability, inconvenience in adjustment and complexity in installation in the background technology, and adopts the scheme that the safety support comprises an outer pipe, and a fixing sleeve is slidably connected to the middle section of the outer wall of the outer pipe; supporting columns distributed at equal intervals are hinged to the outer wall of the periphery of the fixing sleeve, and electromagnets are hinged to the outer walls of one ends of the supporting columns. The electromagnet is attracted to the surface of a main transformer shell, a continuous power source is provided through the electric control box, the stable attraction force is ensured, the supporting columns and the connecting rods form a triangular supporting structure, the unfolding angle is adjusted in combination with the sliding sleeves, the overall anti-overturning capacity can be enhanced, and the height adjusting columns achieve multi-gear fixing through the positioning holes and the threaded shaft pins; and the requirements of different operation heights can be met, the connecting belt adopts the hook-and-loop fastener loop face and the hook-and-loop fastener hook face, the safety support can be rapidly bound, and the storage convenience of the safety support is improved.

Description

Technical Field

[0001] This utility model relates to the field of main transformer maintenance technology, and in particular to a safety bracket for auxiliary maintenance of main transformers. Background Technology

[0002] As the core equipment of the power system, the installation, inspection, and maintenance of the main transformer often involve working at heights. According to the "State Grid Corporation Power Safety Work Regulations", fall prevention measures must be taken for working at heights, and the hooks of safety belts must be fixed to sturdy components or special steel wire ropes, following the principle of "high attachment, low use".

[0003] However, in actual construction, the main transformer has a complex structure with a smooth metal shell and lacks dedicated safety belt attachment points, making it difficult to reliably secure the auxiliary safety harness for workers. Existing technologies use mechanical clips or temporary welding for fixing some safety supports, but these methods have the following shortcomings:

[0004] 1. Poor stability: Traditional stents rely on manual binding or simple support, which are easily affected by external shaking and pose a risk of falling off;

[0005] 2. Inconvenient adjustment: The fixed height of the attachment point cannot adapt to the needs of different working positions, resulting in redundant or insufficient safety belt length;

[0006] 3. Cumbersome installation: It requires multiple people to work together and takes a long time, which affects construction efficiency, especially in narrow spaces where it is difficult to operate. Utility Model Content

[0007] In view of the shortcomings of the existing technology, this utility model provides a safety bracket for auxiliary maintenance of main transformers, which overcomes the shortcomings of the existing technology and effectively solves the problems of poor stability, inconvenient adjustment and complicated installation.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A safety bracket for auxiliary maintenance of a main transformer includes an outer tube. A fixed sleeve is slidably connected to the middle section of the outer wall of the outer tube, and support columns are hinged to the periphery of the fixed sleeve at equal intervals. An electromagnet is hinged to the outer wall of one end of each support column. A sliding sleeve is slidably connected to the bottom section of the outer wall of the outer tube, and a connecting rod is hinged between the sliding sleeve and the support column. A height adjustment column is slidably connected to the inner wall of the top of the outer tube, and adjacent safety belt hanging points are installed on the outer wall of the top of the height adjustment column.

[0010] Preferably, a connecting plate is welded to the top of the outer wall of the outer tube, and a threaded shaft pin is screwed onto one side of the outer wall of the connecting plate.

[0011] Preferably, the outer tube and the height adjustment column are provided with arrayed positioning holes on their outer walls, and threaded pins are provided through the inner walls of the positioning holes.

[0012] Preferably, a connecting strip is slidably connected to the outer wall of one of the support columns, and one end of the outer wall of the connecting strip is provided with a hook and loop fastener, while the other end of the outer wall of the connecting strip is provided with a hook and loop fastener.

[0013] Preferably, a clamp is installed on the outer wall of the outer tube at the top of the fixing sleeve, and an electrical control box is installed on one side of the outer wall of the clamp. The electrical control box and the electromagnet are connected by a signal line.

[0014] Preferably, a flange is welded to the outer wall of the outer tube, and the fixing sleeve is fixedly connected to the bottom outer wall of the flange by screws.

[0015] Preferably, a rubber buffer pad is adhered to the bottom outer wall of the electromagnet.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The safety bracket for auxiliary maintenance of the main transformer in this design uses an electromagnet to adhere to the surface of the main transformer casing. A continuous power supply is provided through the electrical control box to ensure stable adsorption force. The support column and connecting rod form a triangular support structure. Combined with the sliding sleeve to adjust the unfolding angle, it can enhance the overall anti-overturning ability.

[0018] 2. The safety bracket for main transformer maintenance in this design has a height adjustment column that can be fixed in multiple positions through positioning holes and threaded pins to meet the needs of different working heights. In addition, the connecting strap uses Velcro with both rough and hook sides to quickly bind the safety bracket, improving the convenience of storing the safety bracket. Attached Figure Description

[0019] Figure 1 This is a front view of the overall structure of a safety bracket for auxiliary maintenance of a main transformer proposed in this utility model;

[0020] Figure 2 This is a rear view of the overall structure of a safety bracket for auxiliary maintenance of a main transformer proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the outer tube and the height adjustment column of a safety bracket for auxiliary maintenance of a main transformer proposed in this utility model;

[0022] Figure 4 This is an enlarged schematic diagram of part A of the safety bracket for auxiliary maintenance of a main transformer proposed in this utility model.

[0023] In the diagram: 1. Outer tube; 2. Fixing sleeve; 3. Support column; 4. Electromagnet; 5. Sliding sleeve; 6. Connecting rod; 7. Height adjustment column; 8. Safety belt attachment point; 9. Connecting plate; 10. Threaded shaft pin; 11. Positioning hole; 12. Connecting strap; 13. Velcro rough surface; 14. Velcro hook surface; 15. Clamp; 16. Electrical control box; 17. Flange. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figures 1-4 Example 1: A safety bracket for auxiliary maintenance of a main transformer includes an outer tube 1. A fixing sleeve 2 is slidably connected to the middle section of the outer wall of the outer tube 1, and support columns 3 are hinged to the periphery of the fixing sleeve 2 at equal intervals. A flange 17 is welded to the outer wall of the outer tube 1, and the fixing sleeve 2 is fixedly connected to the bottom outer wall of the flange 17 by screws. An electromagnet 4 is hinged to the outer wall of one end of the support column 3, and a rubber buffer pad is adhered to the bottom outer wall of the electromagnet 4. A sliding sleeve 5 is slidably connected to the bottom section of the outer wall of the outer tube 1, and a connecting rod 6 is hinged between the sliding sleeve 5 and the support column 3.

[0026] The outer tube 1 serves as the core support component. Its outer wall is connected to the fixing sleeve 2 via flange 17 and screws, ensuring overall rigidity. The support column 3 is hinged to the periphery of the fixing sleeve 2. The sliding sleeve 5 moves up and down, driving the connecting rod 6 to adjust the unfolding angle, forming a stable triangular support. The electromagnet 4, when energized, can be attracted to the main transformer casing. The electrical control box 16 controls the magnetic start and stop via signal lines. Rubber buffer pads protect the casing coating.

[0027] In this embodiment, an electromagnet 4 is used to adhere to the surface of the main transformer casing. A continuous power supply is provided by the electrical control box 16 to ensure stable adsorption force. Furthermore, the support column 3 and the connecting rod 6 form a triangular support structure. Combined with the sliding sleeve 5 to adjust the unfolding angle, the overall anti-overturning capability can be enhanced.

[0028] In embodiment 2, a height adjustment column 7 is slidably connected to the inner wall of the top of the outer tube 1, and adjacent safety belt hanging points 8 are installed on the outer wall of the top of the height adjustment column 7. A connecting plate 9 is welded to the top of the outer wall of the outer tube 1, and a threaded shaft pin 10 is screwed to one side of the outer wall of the connecting plate 9. An array of positioning holes 11 are opened on the outer walls of both the outer tube 1 and the height adjustment column 7, and the threaded shaft pin 10 is inserted through the inner wall of the positioning hole 11.

[0029] The height adjustment post 7 is nested on the inner wall of the outer tube 1, and after being aligned through the positioning hole 11, it is fixed by inserting the threaded shaft pin 10. The safety belt attachment point 8 is located at the top of the height adjustment post 7, supporting the simultaneous use of multiple attachment points.

[0030] In this embodiment, the height adjustment column 7 is fixed in multiple positions through the positioning hole 11 and the threaded shaft pin 10, which can meet the needs of different working heights.

[0031] One of the support columns 3 has a connecting strip 12 slidably connected to its outer wall, and one end of the outer wall of the connecting strip 12 is provided with a hook and loop fastener 13, and the other end of the outer wall of the connecting strip 12 is provided with a hook and loop fastener 14.

[0032] The connecting strap 12 uses Velcro loop 13 and Velcro hook 14 to quickly secure the safety bracket and prevent the support column 3 from slipping.

[0033] A clamp 15 is installed on the outer wall of the outer tube 1 at the top of the fixed sleeve 2, and an electrical control box 16 is installed on one side of the outer wall of the clamp 15. The electrical control box 16 and the electromagnet 4 are connected by a signal line.

[0034] The electrical control box 16 has a built-in battery that can provide power for more than 4 hours continuously, and it is equipped with an emergency power-off switch to ensure that the magnetic force can be quickly released in case of an emergency.

[0035] Working principle:

[0036] Installation preparation: Place the outer tube 1 vertically on the side of the main transformer. Slide the sliding sleeve 5 to drive the connecting rod 6 to unfold the support column 3, so that the electromagnet 4 is attached to the main transformer casing. Then, start the electrical control box 16 to supply power to the electromagnet 4, so that the entire device is magnetically attracted to the main transformer casing. After that, according to the work position requirements, pull out the height adjustment column 7 to the target position and lock it by inserting the threaded shaft pin 10. Then, the operator can attach the safety belt hook to the safety belt attachment point 8 and start the work according to the principle of "high hanging and low use". After the work is completed, turn off the power to release the magnetism, fold the support column 3 and store the bracket. The whole process does not require complicated tools.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A safety bracket for auxiliary maintenance of a main transformer, comprising an outer tube (1), characterized in that, A fixed sleeve (2) is slidably connected to the middle section of the outer wall of the outer tube (1), and a support column (3) is hinged to the periphery of the fixed sleeve (2). An electromagnet (4) is hinged to one end of the outer wall of the support column (3). A sliding sleeve (5) is slidably connected to the bottom section of the outer wall of the outer tube (1), and a connecting rod (6) is hinged between the sliding sleeve (5) and the support column (3). A height adjustment column (7) is slidably connected to the inner wall of the top of the outer tube (1), and adjacent safety belt hanging points (8) are installed on the outer wall of the top of the height adjustment column (7).

2. The safety bracket for auxiliary maintenance of a main transformer according to claim 1, characterized in that, A connecting plate (9) is welded to the top of the outer wall of the outer tube (1), and a threaded shaft pin (10) is screwed onto one side of the outer wall of the connecting plate (9).

3. The safety bracket for auxiliary maintenance of a main transformer according to claim 1, characterized in that, The outer tube (1) and the height adjustment column (7) are provided with arrayed positioning holes (11), and the threaded shaft pin (10) is provided through the inner wall of the positioning hole (11).

4. A safety bracket for auxiliary maintenance of a main transformer according to claim 1, characterized in that, One of the support columns (3) has a connecting strip (12) slidably connected to its outer wall, and one end of the outer wall of the connecting strip (12) is provided with a hook and loop fastener (13), and the other end of the outer wall of the connecting strip (12) is provided with a hook and loop fastener (14).

5. A safety bracket for auxiliary maintenance of a main transformer according to claim 1, characterized in that, A clamp (15) is installed on the outer wall of the outer tube (1) at the top of the fixed sleeve (2), and an electrical control box (16) is installed on one side of the outer wall of the clamp (15). The electrical control box (16) and the electromagnet (4) are connected by a signal line.

6. A safety bracket for auxiliary maintenance of a main transformer according to claim 1, characterized in that, A flange (17) is welded to the outer wall of the outer tube (1), and a fixing sleeve (2) is fixedly connected to the bottom outer wall of the flange (17) by screws.

7. A safety bracket for auxiliary maintenance of a main transformer according to claim 1, characterized in that, A rubber buffer pad is adhered to the bottom outer wall of the electromagnet (4).

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