Insulation support for transformer installation

Abstract

The utility model discloses an insulating bracket for mounting a transformer, which is applied to the technical field of transformer mounting and is characterized in that a cable with the diameter smaller than the inner diameter of an arc-shaped groove between an upper bracket and a lower bracket is clamped and fixed on three surfaces through a pressure plate and a conical block; meanwhile, the conical block and the pressure plate can also be respectively retracted into the lower bracket and the upper bracket, so that the fixation of a large-diameter cable is not influenced, various cables with different diameters can be conveniently clamped on the wiring terminal of the transformer, the application range of the insulating bracket is expanded, and transformers with different models can be conveniently mounted; the upper support and the lower support are driven by the elastic force of the spring to be mutually opened or oppositely pressed when the cable expands or contracts, so as to adapt to the arrangement of cable deformation, the function that the insulating support can be opened and closed adaptively according to thermal expansion and cold contraction of the cable is achieved, and the working stability after the transformer is installed is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer installation, and particularly relates to an insulating bracket for transformer installation. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil and the magnetic core. Transformers play a vital role in people's lives. In order to prevent the cables from loosening when the transformer terminals are connected, insulating brackets are required to support and fix the cables during the installation of the transformer.

[0003] At present, the Chinese utility model with the publication number of CN219778641U discloses a transformer mounting bracket, which belongs to the technical field of transformers, and includes a load-bearing frame and a bottom plate used in conjunction with the load-bearing frame; the bottom plate is slidably arranged in the load-bearing frame, and the bottom plate is used to install the transformer, and the left and right sides of the load-bearing frame are respectively provided with connecting components for connecting electric poles; the connecting components include a first clamp and a second clamp, and the first clamp and the second clamp are both provided with screw holes, and the screw holes are matched with adjusting bolts connected to tighten the first clamp and the second clamp. The utility model solves the problem in the prior art that it is inconvenient to repair the outdoor transformer when it is damaged, and the operation is simple and convenient, and the practicability is strong.

[0004] In order to facilitate the fixing of cables of different diameters on the transformer terminals, the existing insulating brackets often use screws and nuts to tighten each other so that the upper and lower support plates clamp the cables together. However, since the direct clamping of the support plates will cause the cables on the transformer terminals to be squeezed and deformed, arc grooves are opened in the upper and lower support plates.

[0005] However, we found in actual use that since the arc-shaped grooves are provided in the upper and lower support plates, when the upper and lower support plates are clamped together, a hole will be formed in the straight line of the arc-shaped groove. As a result, the diameter of the cable connected to the transformer terminal needs to be larger than the inner diameter of the hole formed by the arc-shaped groove. Otherwise, it is still difficult for the insulating bracket to clamp and fix the cable. As a result, the insulating bracket can only adjust and clamp the cable whose inner diameter is larger than the hole formed by the arc-shaped groove, which reduces the applicability of the insulating bracket. For this reason, we propose an insulating bracket for transformer installation. Utility Model Content

[0006] The utility model aims to provide an insulating bracket for transformer installation, which has the advantages of being convenient for clamping cables of various diameters on transformer terminals and being able to adapt to opening and closing according to thermal expansion and contraction of the cables.

[0007] The above technical purpose of the utility model is achieved through the following technical scheme: an insulating bracket for transformer installation, including an upper bracket and a lower bracket, the upper bracket and the lower bracket are provided with relative arc grooves on the sides close to each other, the internal thread of the upper bracket is connected to a pressure screw, the bottom of the pressure screw is fixedly connected to a pressure plate, the internal rotation of the lower bracket is connected to a bidirectional screw, and both sides of the surface of the bidirectional screw are threadedly sleeved with conical blocks that are slidably connected to the lower bracket.

[0008] By adopting the above technical scheme, the cable whose diameter is smaller than the inner diameter of the arc-shaped groove between the upper bracket and the lower bracket is clamped and fixed on three sides by the pressure plate and the conical block. At the same time, the conical block and the pressure plate can also be retracted into the lower bracket and the upper bracket respectively, without affecting the setting of fixing the large-diameter cable, so that cables of various different diameters can be clamped on the transformer terminal conveniently, and the application scope of the insulating bracket is improved, so as to facilitate the installation of transformers of different models; by utilizing the spring force to drive the upper bracket and the lower bracket to open or press against each other when the cable expands or contracts, so as to adapt to the setting of cable deformation, the insulating bracket can adapt to the opening and closing according to the thermal expansion and contraction of the cable, thereby preventing the cable on the transformer terminal from being compressed and deformed, resulting in a reduction in output power, and improving the working stability of the transformer after installation.

[0009] The utility model is further configured as follows: the bottom of the upper bracket is fixedly connected with a plug rod slidably plugged with the lower bracket, the surface of the plug rod is slidably sleeved with a spring fixedly connected with the upper bracket, and elastic pads are bonded to the sides of the upper bracket and the lower bracket that are close to each other.

[0010] By adopting the above technical solution, the elastic force of the spring is used to drive the insulating bracket to open and close according to the thermal expansion and contraction of the cable, thereby preventing the cables on the transformer terminals from being compressed and deformed, resulting in a reduction in output power, and improving the working stability of the transformer after installation.

[0011] The utility model is further configured as follows: fastening bolts are slidably inserted on both sides of the upper bracket and the lower bracket, a nut clamped with the upper bracket is threadedly sleeved on the top surface of the fastening bolt, and a gasket slidably sleeved with the fastening bolt is provided at the bottom of the nut.

[0012] By adopting the above technical solution, after the fastening bolt is passed through the upper bracket and the lower bracket, the nut is rotated to utilize the locking force of the thread so that the upper bracket and the lower bracket can clamp and fix the cable, and the gasket can evenly apply the clamping force of the nut to the upper bracket.

[0013] The utility model is further configured as follows: inner grooves used in conjunction with fastening bolts are provided on both sides of the bottom of the lower bracket.

[0014] By adopting the above technical solution, it is convenient to retract the end of the fastening bolt into the lower bracket, thereby making the bottom of the lower bracket more stable.

[0015] The utility model is further configured as follows: anti-skid pads are bonded inside the arc-shaped grooves between the upper bracket and the lower bracket.

[0016] By adopting the above technical solution, the friction force of the cable clamping height inside the insulating bracket is increased, thereby improving stability.

[0017] The utility model is further configured as follows: a reinforcing bottom plate is fixedly connected to the bottom of the lower bracket.

[0018] The above technical solution is adopted to prevent the bottom of the lower bracket from contacting and rubbing with the ground, thereby increasing the service life of the insulating bracket.

[0019] The utility model is further configured as follows: a rotating block is fixedly sleeved on the surface of the bidirectional screw, and the lower bracket and the reinforced bottom plate are both connected to each other on one side close to the rotating block.

[0020] By adopting the above technical solution, it is easy to turn the rotating block to drive the bidirectional screw to rotate.

[0021] The utility model is further configured as follows: the surfaces of the pressure plate, the conical block and the anti-slip pad are all bonded with an insulating layer.

[0022] The above technical solution is adopted to prevent workers from getting electric shock when pressing the cables of the transformer terminals, thereby reducing the safety hazards of installing the transformer.

[0023] In summary, the utility model has the following beneficial effects:

[0024] 1. The pressure plate and the conical block are used to clamp and fix the cables with diameters smaller than the inner diameter of the arc-shaped groove between the upper bracket and the lower bracket on three sides. At the same time, the conical block and the pressure plate can also be retracted into the lower bracket and the upper bracket respectively, without affecting the setting of fixing the large-diameter cables. It is convenient to clamp cables of various diameters on the transformer terminals, improve the application range of the insulating bracket, and facilitate the installation of transformers of different models;

[0025] 2. By utilizing the spring force to drive the upper bracket and the lower bracket to open or press against each other when the cable expands or contracts, thereby adapting to the setting of cable deformation, and achieving the function of the insulating bracket to open and close according to the thermal expansion and contraction of the cable, thereby preventing the cable on the transformer terminal from being compressed and deformed, resulting in a reduction in output power, and improving the working stability of the transformer after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0028] Figure 3 It is a side structural sectional view of the utility model.

[0029] Figure numerals: 1. upper bracket; 2. lower bracket; 3. pressure screw; 4. pressure plate; 5. bidirectional screw; 6. conical block; 7. elastic pad; 8. plug-in rod; 9. spring; 10. fastening bolt; 11. nut; 12. gasket; 13. inner groove; 14. anti-slip pad; 15. reinforcement base plate; 16. rotating block. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] Embodiment 1:

[0032] refer to Figure 1 , Figure 2 , an insulating bracket for transformer installation, comprising an upper bracket 1 and a lower bracket 2, wherein the upper bracket 1 and the lower bracket 2 are provided with opposite arc-shaped grooves on one side thereof close to each other, the upper bracket 1 is internally threadedly connected with a pressure screw 3, the bottom of the pressure screw 3 is fixedly connected with a pressure plate 4, the lower bracket 2 is internally rotatably connected with a bidirectional screw 5, and both sides of the surface of the bidirectional screw 5 are threadedly sleeved with a conical block 6 which is slidably connected with the lower bracket 2; the cable having a diameter smaller than the inner diameter of the arc-shaped groove between the upper bracket 1 and the lower bracket 2 is clamped and fixed on three sides by the pressure plate 4 and the conical block 6, and the conical block 6 and the pressure plate 4 can also be retracted into the lower bracket 2 and the upper bracket 1 respectively, without affecting the setting for fixing the large-diameter cable, so as to facilitate the clamping of cables of various different diameters on the transformer terminal, improve the application scope of the insulating bracket, and thus facilitate the installation of transformers of different models.

[0033] refer to Figure 1 , Figure 2 The arc-shaped groove between the upper bracket 1 and the lower bracket 2 is bonded with an anti-skid pad 14 to increase the friction of the cable clamping height inside the insulating bracket and improve stability.

[0034] refer to Figure 1 , Figure 2 , Figure 3 The bottom of the lower bracket 2 is fixedly connected with a reinforcing bottom plate 15 to prevent the bottom of the lower bracket 2 from contacting and rubbing with the ground, thereby improving the service life of the insulating bracket.

[0035] refer to Figure 2 A rotating block 16 is fixedly sleeved on the surface of the bidirectional screw 5, and the lower bracket 2 and the side of the reinforced bottom plate 15 close to the rotating block 16 are open to each other, so that the rotating block 16 is moved to drive the bidirectional screw 5 to rotate.

[0036] Brief description of the usage process: by rotating the bidirectional screw 5 and engaging the conical block 6 with threads, the conical block 6 is driven to slide inside the lower bracket 2, so that the conical blocks 6 are close to each other to squeeze the cable with a diameter smaller than the inner diameter of the arc-shaped groove between the upper bracket 1 and the lower bracket 2 to the center of the top of the lower bracket 2; then, the pressure screw 3 is rotated to engage with the upper bracket 1 thread, driving the pressure plate 4 to move downward, thereby pressing the cable downward, so that the pressure plate 4 and the conical block 6 clamp the cable on three sides to fix it, and at the same time, rotating the bidirectional screw 5 and the pressure screw 3 in the opposite direction can retract the conical block 6 and the pressure plate 4 into the lower bracket 2 and the upper bracket 1 respectively, so as not to affect the fixation of cables with larger diameters.

[0037] Embodiment 2:

[0038] refer to Figure 1 , Figure 2 , Figure 3 , an insulating bracket for transformer installation, the bottom of the upper bracket 1 is fixedly connected with a plug-in rod 8 that is slidably plugged with the lower bracket 2, the surface of the plug-in rod 8 is slidably sleeved with a spring 9 that is fixedly connected to the upper bracket 1, and the upper bracket 1 and the lower bracket 2 are bonded with elastic pads 7 on the sides close to each other; by utilizing the elastic force of the spring 9 to drive the upper bracket 1 and the lower bracket 2 to open or press against each other when the cable expands or contracts, thereby adapting to the setting of cable deformation, achieving the function of the insulating bracket to adapt to opening and closing according to the thermal expansion and contraction of the cable, thereby preventing the cable on the transformer terminal from being compressed and deformed, resulting in a decrease in output power, and improving the working stability of the transformer after installation.

[0039] refer to Figure 1 , Figure 2 , Figure 3 , fastening bolts 10 are slidably inserted on both sides of the upper bracket 1 and the lower bracket 2, and the top threaded sleeve of the fastening bolt 10 is threaded with a nut 11 that is clamped with the upper bracket 1, and the bottom of the nut 11 is provided with a gasket 12 that is slidably sleeved with the fastening bolt 10. After the fastening bolt 10 passes through the upper bracket 1 and the lower bracket 2, the nut 11 is rotated to use the locking force of the thread to clamp and fix the cable between the upper bracket 1 and the lower bracket 2, and at the same time, the gasket 12 can evenly apply the clamping force of the nut 11 to the upper bracket 1.

[0040] refer to Figure 1 , Figure 2 Both sides of the bottom of the lower bracket 2 are provided with inner grooves 13 used in conjunction with the fastening bolts 10, so that the ends of the fastening bolts 10 can be easily collected into the lower bracket 2, thereby making the bottom of the lower bracket 2 more stable.

[0041] refer to Figure 1 , Figure 2The surfaces of the pressure plate 4, the conical block 6 and the anti-slip pad 14 are all bonded with an insulating layer to prevent the workers from getting an electric shock when pressing the cables of the transformer terminals, thereby reducing the safety hazards of installing the transformer.

[0042] A brief description of the usage process: by placing the plug-in rod 8 inside the lower bracket 2, and then pressing down the upper bracket 1 so that the plug-in rod 8 is inserted into the lower bracket 2 and slides downward, and then the spring 9 between the upper bracket 1 and the lower bracket 2 is squeezed and contracted against each other, and at the same time, after the fastening bolt 10 is passed through the upper bracket 1 and the lower bracket 2, the nut 11 is turned to use the locking force of the thread to clamp the upper bracket 1 and the lower bracket 2 to fix the cable, and the fastening bolt 10 and the nut 11 should not be completely locked, so that some movable gap is retained between the upper bracket 1 and the lower bracket 2, and finally, the resilience of the spring 9 and the pressure plate 4 drives the upper bracket 1 and the lower bracket 2 to open or press against each other when the cable expands or contracts, thereby adapting to the deformation of the cable.

[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An insulating bracket for transformer installation, comprising an upper bracket (1) and a lower bracket (2), characterized in that: The upper bracket (1) and the lower bracket (2) are provided with opposite arc grooves on the sides close to each other. The upper bracket (1) is internally threadedly connected to a pressure screw (3), and the bottom of the pressure screw (3) is fixedly connected to a pressure plate (4). The lower bracket (2) is internally rotatably connected to a bidirectional screw (5), and both sides of the surface of the bidirectional screw (5) are threadedly sleeved with conical blocks (6) that are slidably connected to the lower bracket (2).

2. The insulating bracket for transformer installation according to claim 1, characterized in that: The bottom of the upper bracket (1) is fixedly connected to a plug rod (8) which is slidably plugged into the lower bracket (2); the surface of the plug rod (8) is slidably sleeved with a spring (9) which is fixedly connected to the upper bracket (1); and elastic pads (7) are bonded to the sides of the upper bracket (1) and the lower bracket (2) which are close to each other.

3. The insulating bracket for transformer installation according to claim 1, characterized in that: Both sides of the upper bracket (1) and the lower bracket (2) are slidably inserted with fastening bolts (10), the top thread of the fastening bolt (10) is sleeved with a nut (11) that is clamped with the upper bracket (1), and the bottom of the nut (11) is provided with a gasket (12) that is slidably sleeved with the fastening bolt (10).

4. The insulating bracket for transformer installation according to claim 3, characterized in that: Both sides of the bottom of the lower bracket (2) are provided with inner grooves (13) for use with the fastening bolts (10).

5. The insulating bracket for transformer installation according to claim 1, characterized in that: Anti-slip pads (14) are bonded inside the arc-shaped grooves between the upper bracket (1) and the lower bracket (2).

6. The insulating bracket for transformer installation according to claim 1, characterized in that: A reinforcing bottom plate (15) is fixedly connected to the bottom of the lower bracket (2).

7. The insulating bracket for transformer installation according to claim 6, characterized in that: A rotating block (16) is fixedly sleeved on the surface of the bidirectional screw rod (5), and the lower bracket (2) and the reinforced bottom plate (15) are both connected to each other on one side close to the rotating block (16).

8. The insulating bracket for transformer installation according to claim 5, characterized in that: The surfaces of the pressure plate (4), the conical block (6) and the anti-slip pad (14) are all bonded with an insulating layer.

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