Trial assembly device for transformer oil tank

Abstract

The utility model belongs to the field of transformer oil tank installation equipment, and provides a trial assembly device for a transformer oil tank, which comprises a positioning plate, the overlook projection of the positioning plate is L-shaped, the inner side of the positioning plate is provided with a right-angle positioning port, and the right-angle positioning port is used for being matched with one corner of the transformer oil tank. The outer side face, deviating from the right-angle positioning opening, of the positioning plate is provided with a handle rod assembly, the top face of the positioning plate is provided with a cantilever, the cantilever is provided with a clamping mechanism matched with the cantilever in a hinged mode, and the clamping mechanism is provided with a clamping opening used for clamping an iron core screw. A brake releasing mechanism used for being matched with the clamping mechanism is arranged at the position, close to the handle rod assembly, of the positioning plate. The tool is reasonable in design, convenient to operate by one hand, beneficial to improving the trial assembly operation efficiency and safety, and suitable for large-scale popularization.

Description

Technical Field

[0001] This utility model belongs to the field of transformer oil tank installation equipment, and particularly relates to a trial installation device for transformer oil tanks. Background Technology

[0002] Oil-immersed transformers mainly consist of the transformer body, oil tank, cooling system, protection system, and outgoing line system. Before leaving the factory, transformers require trial assembly. Trial assembly differs from on-site installation. On-site installation typically involves more workers and ensures safety, while on a trial assembly line, each workstation has fewer workers; often, one person operates the crane to install the core into the transformer tank.

[0003] During the transformer trial assembly process, workers operate the crane remote control with one hand while using the other to hold the bolt rod on the side of the iron core, applying a certain corrective traction force to the iron core until it falls into the transformer tank. However, operating while holding the iron core poses a certain danger because the arm is within the coverage area of ​​the falling iron core. If the crane operation speed is too fast, the probability of the hand being crushed increases, which does not meet the requirements of safe production in the workshop. Utility Model Content

[0004] This utility model addresses the aforementioned technical problems existing in the trial assembly of transformers by proposing a reasonably designed, easy-to-operate, and efficient and safe trial assembly device for transformer oil tanks.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a trial assembly device for a transformer oil tank, including a positioning plate. The top view of the positioning plate is L-shaped. A right-angle positioning opening is provided on the inner side of the positioning plate. The right-angle positioning opening is used to cooperate with one corner of the transformer oil tank. A lever assembly is provided on the outer side of the positioning plate that is off from the right-angle positioning opening. A cantilever is provided on the top surface of the positioning plate. A clamping mechanism is provided on the cantilever and hinged to it. The clamping mechanism is provided with a clamping opening for clamping the iron core screw. A brake release mechanism is provided on the positioning plate near the lever assembly to cooperate with the clamping mechanism.

[0006] Preferably, the clamping mechanism includes a swing arm, and a clamping hook is rotatably provided at the end of the swing arm. The diameter of the clamping opening changes with the relative angle between the swing arm and the clamping hook. A spring plate is provided on the side of the clamping hook facing away from the clamping opening. One end of the spring plate is fixed to the positioning plate, and the other end of the spring plate is a free end.

[0007] Preferably, the top of the cantilever is provided with a limiting protrusion that cooperates with the swing arm, and the limiting protrusion is biased towards the inside of the positioning plate.

[0008] Preferably, the release braking mechanism includes a steel wire connected to a spring plate, a brake cylinder is provided at the corner of the positioning plate, a brake rod connected to the steel wire is provided inside the brake cylinder, a connecting groove for accommodating the steel wire is provided on the side of the brake rod, a guide rod is also provided on the side of the brake rod, the guide rod cooperates with a guide hole provided on the brake cylinder, and a helical spring is provided at the bottom of the brake rod and connected to the inner bottom of the brake cylinder.

[0009] Preferably, the positioning plate is provided with a wiring box, which is connected to the brake cylinder and one end of the wiring box faces the free end of the spring plate.

[0010] Preferably, the guide rod extends downward at an angle and has a bent rod at its end, which bends upward toward the guide rod.

[0011] Preferably, the handlebar assembly includes a loop rod with a break and both ends of the break welded to the side of the positioning plate. The loop rod has a pair of reinforcing rods connected to different sides of the positioning plate, and a main handlebar fixedly connected to the brake cylinder is provided in the middle of the loop rod.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] This utility model provides a trial assembly device for transformer oil tanks. A hand-held handle assembly is moved to the side of the iron core, and the clamping port hooks onto the iron core screw located at the edge of the iron core's side. This provides a certain traction force to the suspended iron core. In conjunction with the workshop crane, this allows the iron core to be lowered vertically into the transformer oil tank. During this process, the worker's body is not within the iron core's descent area, ensuring both trial assembly quality and operational safety. This utility model is rationally designed, easy to operate with one hand, and improves the efficiency and safety of trial assembly operations, making it suitable for large-scale promotion. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A working diagram of a trial assembly device for a transformer oil tank provided for an embodiment;

[0016] Figure 2 A front view of a trial assembly device for a transformer oil tank provided in an embodiment;

[0017] Figure 3 A perspective view of a trial assembly device for a transformer oil tank provided in an embodiment;

[0018] Figure 4 A perspective view of a test assembly device for a transformer tank provided in an embodiment, viewed from another direction;

[0019] Figure 5 A top view of a trial assembly device for a transformer oil tank provided in an embodiment;

[0020] Figure 6 for Figure 5 A cross-sectional view of a trial assembly device for a transformer oil tank along the HH direction;

[0021] In the above figures: 1. Positioning plate; 11. Right-angle positioning port; 2. Transformer oil tank; 3. Handlebar assembly; 31. Reverse rod; 32. Reinforcing rod; 33. Main handlebar; 4. Cantilever; 5. Clamping mechanism; 51. Clamping port; 52. Swing arm; 53. Clamping hook; 54. Spring plate; 55. Limiting protrusion; 6. Iron core screw; 7. Brake release mechanism; 71. Steel wire; 72. Brake cylinder; 73. Brake lever; 74. Connecting groove; 75. Guide rod; 76. Guide hole; 77. Helical spring; 78. Cable box; 79. Bent rod. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Examples, such as Figures 1-6As shown, the present invention provides a trial assembly device for a transformer oil tank, including a positioning plate 1. The top view of the positioning plate 1 is L-shaped. A right-angle positioning port 11 is provided on the inner side of the positioning plate 1. The right-angle positioning port 11 is used to cooperate with one corner of the transformer oil tank 2. A handle assembly 3 is provided on the outer side of the positioning plate 1 that is off from the right-angle positioning port 11. A cantilever 4 is provided on the top surface of the positioning plate 1. The cantilever 4 is fixedly welded to one side near the inner side of the positioning plate. A clamping mechanism 5 is provided on the cantilever 4 and is hinged to it. The clamping mechanism 5 is provided with a clamping port 51 for clamping the iron core screw 6. A release braking mechanism 7 is provided on the positioning plate 1 near the handle assembly 3 for cooperating with the clamping mechanism 5.

[0025] Specifically, at the trial assembly station, the iron core is suspended in the air by a crane. The operator can move the iron core towards the transformer tank 2 by remotely controlling the crane. During the process of the crane lowering the iron core into the transformer tank 2, the operator moves the handle assembly 3 to the side of the iron core. The iron core screws on the side of the iron core are generally distributed in a 2×3 pattern. The clamping port 51 hooks the iron core screw located at the corner of the iron core side, thereby providing a certain traction force for the iron core in the suspended state. In conjunction with the workshop crane, the worker's body parts are not in the falling area of ​​the iron core, especially the arm. Before the iron core is completely lowered, the positioning plate 1 is stuck at the corner of the transformer tank 2 to provide an accurate falling position for the iron core. After the falling position of the iron core is basically determined, the clamping mechanism 5 can be released by manually operating the braking mechanism 7 to disengage the iron core screw 6, and finally the iron core is lowered into place. This approach ensures both the quality of the trial assembly and the safety of the operation. Furthermore, when it involves sheet metal, the thickness is moderate, the weight is not too heavy, and it is easy to operate with one hand, making it highly practical.

[0026] To improve the clamping performance of the clamping mechanism 5, the clamping mechanism 5 provided by this utility model includes a swing arm 52, with a clamping hook 53 rotatably mounted at the end of the swing arm 52. The diameter of the clamping opening 51 varies with the relative angle between the swing arm 52 and the clamping hook 53. A spring plate 54 is provided on the side of the clamping hook 53 facing away from the clamping opening 51. One end of the spring plate 54 is fixed to the positioning plate 1, and the other end of the spring plate 54 is a free end. The spring plate 54 provides pressure to the clamping hook 53. Before clamping the iron core screw, the diameter of the clamping opening 51 is small under the action of elasticity. After clamping the iron core screw, the spring plate 54 generates a corresponding compressive force, and the clamping opening 51 is in a tensioned state. The swing arm 52 provides a reasonable swing amplitude for the movement of the clamping hook 53, allowing the clamping hook 53 to quickly leave the iron core screw 6 under the drive of the release braking mechanism 7, thus preventing the device from being clamped between the falling iron core and the transformer oil tank 2.

[0027] Furthermore, the right-angle positioning opening 11 provides a positioning contact surface for the positioning plate 1 and the edge position of the transformer tank 2 to mate. The depth of the right-angle positioning opening 11 allows the inner edge of the positioning plate 1 to be closer to the trial assembly position of the iron core, enabling the cantilever 4 and the clamping hook 53 to better clamp the iron core screw. Based on this, the top of the cantilever 4 is provided with a limiting protrusion 55 that mates with the swing arm 52. The limiting protrusion 55 is biased towards the inner side of the positioning plate 1. By setting the limiting protrusion 55, a limiting support is provided for the swing arm 52, thereby forming a planar triangular relationship with the spring plate 54. This avoids excessive movement allowance of the iron core screw and the clamping hook 53 during the application of traction force using this device, which could affect the accuracy and efficiency of the trial assembly.

[0028] To improve the operational flexibility of the brake release mechanism 7, the brake release mechanism 7 provided by this utility model includes a steel wire 71 connected to the spring plate 54, a brake cylinder 72 provided at the corner of the positioning plate 1, a brake rod 73 connected to the steel wire 71 provided inside the brake cylinder 72, a connecting groove 74 for accommodating the steel wire 71 provided on the side of the brake rod 73, a guide rod 75 provided on the side of the brake rod 73, the guide rod 75 cooperating with the guide hole 76 provided on the brake cylinder 72, and a helical spring 77 connected to the inner bottom of the brake cylinder 72 provided at the bottom of the brake rod 73. The steel wire 71 provides a flexible connection between the brake lever 73 and the spring plate 54. By pressing the guide rod 75, the brake lever 73 can be lowered in the brake cylinder 72. The direct effect is to shorten the actual lever arm from the spring plate 54 to the brake lever 73, thereby relieving the pressure of the spring plate 54 on the clamping hook 53, making it easier to quickly move the device so that the iron core can fall completely into the transformer oil tank 2. The helical spring 77 generates strain during the descent of the brake lever 73. After the guide rod 75 is released, the helical spring 77 can lift the brake lever 73, allowing the brake lever 73 to return to its original position, which is convenient for the trial installation operation in the next cycle.

[0029] Furthermore, the positioning plate 1 provided by this utility model is provided with a wiring box 78, which is connected to the brake cylinder 72 and one end of the wiring box 78 faces the free end of the spring plate 54. In this way, the wiring box 78 not only serves as a protective structure for the steel wire 71, but its length can also serve as a reverse limiting node for the spring plate 54, avoiding unnecessary external force applied to the steel wire 71 when it contacts the clamping port 51 and the iron core screw.

[0030] To facilitate operation of the guide rod 75, the guide rod 75 provided by this utility model extends downward at an angle and has a bent rod 79 at its end, which bends and extends upward towards the guide rod 75. In this way, when the worker holds the handle assembly 3 with one hand, he can release the brake by using his thumb to grip the bent rod 79 and press down. The design is reasonable and highly practical.

[0031] To improve the practicality of the handle assembly 3, the handle assembly 3 provided by this utility model includes a loop rod 31. The loop rod 31 has a break, and the two ends of the break are welded to the side of the positioning plate 1. A pair of reinforcing rods 32 are provided on the loop rod 31 and connected to different sides of the positioning plate 1. A main handle rod 33, which is fixedly connected to the brake cylinder 72, is provided in the middle of the loop rod 31. The loop rod 31 and the reinforcing rods 32 can establish a stable and reliable support relationship on the side of the positioning plate 1. The main handle rod 33 is for hand gripping, which can provide a reasonable distance between the handle node and the upper and lower cover surfaces of the transformer oil tank 2, keeping the worker's body in a safe area, especially avoiding accidents caused by sudden arm descent speed.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A trial assembly device for a transformer oil tank, characterized in that, The system includes a positioning plate, which has an L-shaped top view. A right-angle positioning opening is provided on the inner side of the positioning plate to engage with a corner of the transformer tank. A lever assembly is provided on the outer side of the positioning plate, offset from the right-angle positioning opening. A cantilever is provided on the top surface of the positioning plate, and a clamping mechanism is hinged to the cantilever. The clamping mechanism has a clamping opening for clamping the core screw. A brake release mechanism is provided on the positioning plate near the lever assembly to engage with the clamping mechanism.

2. The trial assembly device for a transformer oil tank according to claim 1, characterized in that, The clamping mechanism includes a swing arm, and a clamping hook is rotatably provided at the end of the swing arm. The diameter of the clamping opening changes with the relative angle between the swing arm and the clamping hook. A spring plate is provided on the side of the clamping hook facing away from the clamping opening. One end of the spring plate is fixed to the positioning plate, and the other end of the spring plate is a free end.

3. The trial assembly device for a transformer oil tank according to claim 2, characterized in that, The top of the cantilever is provided with a limiting protrusion that cooperates with the swing arm, and the limiting protrusion is biased towards the inside of the positioning plate.

4. The trial assembly device for a transformer oil tank according to claim 3, characterized in that, The brake release mechanism includes a steel wire connected to a spring plate. A brake cylinder is provided at the corner of the positioning plate. A brake rod connected to the steel wire is provided inside the brake cylinder. A connecting groove for accommodating the steel wire is provided on the side of the brake rod. A guide rod is also provided on the side of the brake rod. The guide rod cooperates with a guide hole provided on the brake cylinder. A helical spring connected to the inner bottom of the brake cylinder is provided at the bottom of the brake rod.

5. A trial assembly device for a transformer oil tank according to claim 4, characterized in that, The positioning plate is provided with a wiring box, which is connected to the brake cylinder and one end of the wiring box faces the free end of the spring plate.

6. The trial assembly device for a transformer oil tank according to claim 5, characterized in that, The guide rod extends downward at an angle and has a bent rod at its end, which bends upward toward the guide rod.

7. A trial assembly device for a transformer oil tank according to claim 1, characterized in that, The handlebar assembly includes a loop rod with a break and both ends of the break welded to the side of the positioning plate. The loop rod has a pair of reinforcing rods connected to different sides of the positioning plate. The loop rod has a main handlebar fixedly connected to the brake cylinder in the middle.

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