Lifting structure of buried transformer

Abstract

The utility model relates to the technical field of buried transformers, in particular to a lifting structure of a buried transformer, which comprises a foundation pit and an outer box, a top plate is inserted into the top of the foundation pit, a transformer is mounted in the outer box, two fixing frames are fixedly connected to the inner bottom wall of the foundation pit, a lifting plate is arranged at the bottom of the outer box, and the lifting plate is fixedly connected with the top plate. Connecting blocks are installed at the four corners of the bottom of the lifting plate correspondingly, and connecting frames are hinged to the lower portions of the upper connecting block and the lower connecting block correspondingly. The underground transformer maintenance device has the beneficial effects that the hydraulic cylinder is started to drive the lifting plate to be adjusted up and down, so that the underground transformer is conveniently installed, workers can overhaul or maintain the transformer without going in and out of a foundation pit with the help of a crawling ladder, the workers can conveniently use the transformer, and the overhaul efficiency is improved; and meanwhile, a bidirectional lead screw is rotated to drive a clamping plate to clamp the outer box of the transformer, so that when the transformer is moved up and down, the outer box can be prevented from shaking, and the stability in the lifting process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground transformers, in particular to a lifting structure of an underground transformer. Background Art

[0002] An underground transformer is a type of power distribution equipment, usually installed underground, used to convert high-voltage electricity into low-voltage electricity for supply to users in urban or industrial areas. Compared with traditional aerial transformers, underground transformers are more compact and can better adapt to urban environments while reducing the impact on the surrounding landscape.

[0003] In the prior art, during the installation of a conventional underground transformer, a lifting device is usually used to place the underground transformer directly inside a reserved foundation pit, and then a cover is closed to facilitate the subsequent use of the underground transformer.

[0004] However, when it needs to be repaired, since the transformer is installed inside the foundation pit, the staff needs to enter the foundation pit to repair the buried transformer. After the repair is completed, they need to climb out of the foundation pit using a ladder, which makes it inconvenient for the staff to use and affects the efficiency of maintenance. Utility Model Content

[0005] The purpose of the utility model is to provide a lifting structure of an underground transformer to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting structure for an underground transformer, comprising a foundation pit and an outer box, a top plate being inserted at the top of the foundation pit, a transformer being installed inside the outer box, two fixed frames being fixedly connected to the inner bottom wall of the foundation pit, a lifting plate being provided at the bottom of the outer box, connecting blocks being installed at the four corners of the bottom of the lifting plate, connecting frames being hinged at the lower parts of the upper and lower connecting blocks, a slider being installed at the bottom of the connecting frame, and the slider slides on the inner wall of the fixed frame.

[0007] Preferably, a sliding rod is fixedly connected to the interior of the fixed frame, and a hydraulic cylinder is installed at the inner bottom of the foundation pit.

[0008] Preferably, a fixing block is installed on the top of the lifting plate, a plurality of mounting blocks are slidably connected inside the fixing block, and a clamping plate is fixedly connected to the front sides of the left and right mounting blocks.

[0009] Preferably, the upper portion of the fixing block is rotatably connected to a bidirectional lead screw, and the two upper mounting blocks are both threadedly connected to the outer side of the bidirectional lead screw.

[0010] Preferably, a fixing rod is fixedly connected to the lower portion of the fixing block, and the two lower mounting blocks are both slidably connected to the outer side of the fixing rod.

[0011] Preferably, the sliding block is slidably connected to the outside of the sliding rod, and the output end of the hydraulic cylinder is fixedly connected to the bottom of the lifting plate.

[0012] Preferably, the lifting plate is slidably connected to the inner wall of the foundation pit, and the outer side of the lifting plate is in contact with the inner wall of the foundation pit.

[0013] Compared with the prior art, the beneficial effect of the lifting structure of an underground transformer proposed by the utility model is: by starting the hydraulic cylinder to drive the lifting plate to adjust up and down, the underground transformer can be installed conveniently, and the staff does not need to use a ladder to enter and exit the foundation pit, so the transformer can be inspected or repaired, which is convenient for the staff to use and improves the efficiency of maintenance. At the same time, by rotating the bidirectional screw, the clamping plate is driven to clamp the outer box of the transformer, so that when the transformer is moved up and down, the outer box can be prevented from shaking, thereby improving the stability during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the lifting plate structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the connecting frame of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the connection block of the utility model;

[0018] Figure 5 This is a schematic diagram of the slide bar structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the fixed block of the utility model;

[0020] Figure 7 This is a schematic diagram of the installation block structure of the utility model.

[0021] In the figure: 1. foundation pit; 2. fixed frame; 3. lifting plate; 4. outer box; 5. top plate; 6. fixed block;

[0022] 7. Connecting frame; 8. Transformer; 9. Bidirectional lead screw; 10. Fixing rod; 11. Clamp; 12. Connecting block; 13. Hydraulic cylinder; 14. Sliding block; 15. Sliding rod; 16. Mounting block. DETAILED DESCRIPTION

[0023] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figure 1-Figure 7 The utility model provides a technical solution: a lifting structure of an underground transformer, comprising a foundation pit 1 and an outer box 4, a top plate 5 is inserted at the top of the foundation pit 1, a transformer 8 is installed inside the outer box 4, two fixed frames 2 are fixedly connected to the inner bottom wall of the foundation pit 1, a lifting plate 3 is arranged at the bottom of the outer box 4, connecting blocks 12 are installed at the four corners of the bottom of the lifting plate 3, the lower parts of the upper and lower connecting blocks 12 are hinged with connecting frames 7, a slider 14 is installed at the bottom of the connecting frame 7, and the slider 14 slides on the inner wall of the fixed frame 2.

[0026] Since the upper part of the connecting frame 7 is rotatably connected to the lifting plate 3 through the connecting block 12, and the lower part of the connecting frame 7 is slidably connected to the outer side of the sliding block 14 and the sliding rod 15, the lifting plate 3 is driven downward by the hydraulic cylinder 13, thereby driving the transformer 8 inside the outer box 4 to move downward to the inside of the foundation pit 1.

[0027] Embodiment 2

[0028] On the basis of the first embodiment, in order to achieve the upward and downward adjustment of the lifting plate and improve the stability during the adjustment process, a sliding rod 15 is fixedly connected to the interior of the fixed frame 2 and a hydraulic cylinder 13 is installed at the inner bottom of the foundation pit 1.

[0029] First, start the hydraulic cylinder 13 to drive the lifting plate 3 to move downward. Since the upper part of the connecting frame 7 is rotatably connected to the lifting plate 3 through the connecting block 12, the lower part of the connecting frame 7 is slidably connected to the outer side of the slide bar 15 through the slider 14, thereby driving the lifting plate 3 to move downward, thereby driving the outer box 4 to move downward to the inside of the foundation pit 1.

[0030] Embodiment 3

[0031] On the basis of the second embodiment, in order to improve the stability of the outer box when lifting, a fixed block 6 is installed on the top of the lifting plate 3, and a plurality of mounting blocks 16 are slidably connected inside the fixed block 6. The front sides of the left and right mounting blocks 16 are fixedly connected with a clamping plate 11.

[0032] First, the hand crank is turned to drive the bidirectional lead screw 9 to rotate, thereby driving the two clamping plates 11 to move toward the middle of the fixed block 6 and clamp the outer side of the outer box 4 to maintain its stability.

[0033] Embodiment 4

[0034] On the basis of the third embodiment, in order to improve the stability of the clamping plate during the clamping process, a fixing rod 10 is fixedly connected to the lower portion of the fixing block 6 , and two lower mounting blocks 16 are slidably connected to the outer side of the fixing rod 10 .

[0035] By sliding the lower mounting block 16 on the outside of the fixing rod 10, when the bidirectional lead screw 9 drives the two clamping plates 11 to clamp the outer box 4, the stability of the clamping plates 11 during movement is improved, thereby improving the clamping effect.

[0036] During actual use, the staff first places the transformer 8 inside the outer box 4, and at the same time places the outer box 4 on the top of the lifting plate 3, and then turns the hand crank to drive the bidirectional screw 9 to rotate. Due to the threaded connection between the upper mounting block 16 and the bidirectional screw 9, the lower mounting block 16 slides on the outside of the fixed rod 10, thereby driving the two clamping plates 11 to move toward the middle of the fixed block 6 and clamping the outside of the outer box 4 to maintain its stability. Then, the hydraulic cylinder 13 is started to drive the lifting plate 3 to move downward. Since the upper part of the connecting frame 7 is rotatably connected to the lifting plate 3 through the connecting block 12, the lower part of the connecting frame 7 is slidably connected to the outside of the slide bar 15 through the slider 14, thereby driving the lifting plate 3 to move downward, and clamping the outer box 4 through the clamping device, thereby preventing the outer box 4 from shaking and scratching during the descent, thereby improving its stability during the descent.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting structure for an underground transformer, comprising a foundation pit (1) and an outer box (4), wherein a top plate (5) is plugged into the top of the foundation pit (1), and a transformer (8) is installed inside the outer box (4), characterized in that: The inner bottom wall of the foundation pit (1) is fixedly connected to two fixed frames (2); a lifting plate (3) is arranged at the bottom of the outer box (4); connecting blocks (12) are installed at the four corners of the bottom of the lifting plate (3); the lower parts of the upper and lower connecting blocks (12) are hingedly connected to connecting frames (7); a sliding block (14) is installed at the bottom of the connecting frame (7), and the sliding block (14) slides on the inner wall of the fixed frame (2).

2. The lifting structure of an underground transformer according to claim 1, characterized in that: A sliding rod (15) is fixedly connected inside the fixed frame (2), and a hydraulic cylinder (13) is installed at the inner bottom of the foundation pit (1).

3. The lifting structure of an underground transformer according to claim 1, characterized in that: A fixed block (6) is installed on the top of the lifting plate (3), a plurality of mounting blocks (16) are slidably connected inside the fixed block (6), and a clamping plate (11) is fixedly connected to the front sides of the left and right mounting blocks (16).

4. The lifting structure of an underground transformer according to claim 3 is characterized in that: The upper part of the fixed block (6) is rotatably connected to a bidirectional lead screw (9), and the two upper mounting blocks (16) are both threadedly connected to the outer side of the bidirectional lead screw (9).

5. The lifting structure of an underground transformer according to claim 3, characterized in that: The lower part of the fixing block (6) is fixedly connected to a fixing rod (10), and the two lower mounting blocks (16) are both slidably connected to the outer side of the fixing rod (10).

6. The lifting structure of an underground transformer according to claim 2, characterized in that: The sliding block (14) is slidably connected to the outside of the sliding rod (15), and the output end of the hydraulic cylinder (13) is fixedly connected to the bottom of the lifting plate (3).

7. The lifting structure of an underground transformer according to claim 1, characterized in that: The lifting plate (3) is slidably connected to the inner wall of the foundation pit (1), and the outer side of the lifting plate (3) is in contact with the inner wall of the foundation pit (1).

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