Transformer lead fastening device

Abstract

The utility model discloses a transformer lead fastening device, which relates to the technical field of transformer accessories and comprises a fixing frame, a supporting cylinder fixed at the bottom of the fixing frame, a jacket connected to the bottom of the supporting cylinder, a clamping pad connected to one side of the jacket, a limiting plate fixed at the bottom of the jacket, and a sleeve sleeved outside the supporting cylinder. And a spring is connected between the sleeve and the fixing frame. Through the arrangement of the sleeve, the spring, the limiting plate, the clamping sleeves and the clamping pad, after a lead penetrates through the threading hole, the spring drives the sleeve to move downwards, the sleeve moves downwards to drive the four clamping sleeves to rotate oppositely to be matched with the clamping pad to clamp the lead, during the period, the clamping pad prevents the lead from being clamped, friction force is increased, looseness is avoided, and then the sleeve abuts against the limiting plate. The sleeve is prevented from falling downwards; after clamping, the sleeve is always subjected to downward force under the influence of gravity and the elastic force of the spring, so that the clamping sleeve is limited and prevented from being opened; the disassembly and assembly structure is simple, operation is convenient, and meanwhile the anti-loosening effect is excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer accessories, in particular to a transformer lead fastening device. Background Technique

[0002] The wires connecting the respective lead-out ends of the transformer windings outside the windings are called leads. Electric energy from an external power source is input into the transformer through the leads, and the electric energy transmitted in is also output from the transformer to the outside through the leads. The leads are divided into bare copper bars, paper-covered copper bars, copper buses, copper wires, and copper tubes. To ensure the insulation distance of the leads and withstand the vibration and impact of the electrodynamic force during operation and short circuit without displacement and deformation, clamping parts must be used to fasten the leads.

[0003] When the existing transformer lead fastening device is fastening, to cope with the vibration and impact of the electrodynamic force during operation and short circuit, anti-loosening bolts are usually used to fasten the clamping parts, thereby fastening the transformer leads. However, the existing anti-loosening bolts are无非开口销、开槽、串接钢丝、焊接、粘合等,分为可拆卸和不可拆卸,可拆卸由于设置了其他结构或其他螺母,增加了结构的繁琐度,导致拆卸维护和更换引线时拆装操作较为繁琐,而不可拆卸结构更为不便,还会破坏螺栓造成浪费。 Summary of the Utility Model

[0004] Based on this, the purpose of the present utility model is to provide a transformer lead fastening device to solve the technical problems mentioned in the above background technique.

[0005] To achieve the above purpose, the present utility model provides the following technical solution: A transformer lead fastening device includes a fixed frame. A support cylinder is fixed to the bottom of the fixed frame, and a clamping sleeve is connected to the bottom of the support cylinder. A clamping pad is connected to one side of the clamping sleeve. A limiting plate is fixed to the bottom of the clamping sleeve. A sleeve is sleeved outside the support cylinder, and a spring is connected between the sleeve and the fixed frame.

[0006] By adopting the above technical solution, after the lead passes through the wire passing hole, the spring drives the sleeve to move downward. After the sleeve moves downward, it drives the four clamping sleeves to rotate towards each other and cooperate with the clamping pad to clamp the lead. During this period, the clamping pad prevents the lead from being scratched and increases the friction force to avoid loosening. Then, the sleeve abuts against the limiting plate to prevent the sleeve from falling off downward; after clamping, the sleeve is always subjected to a downward force due to the influence of gravity and the elastic force of the spring, thereby limiting the clamping sleeve to prevent the clamping sleeve from opening. When the clamping sleeve is affected by vibration and applies an outward force, since the moving directions of the clamping sleeve and the sleeve are different, only the friction force between the clamping sleeve and the sleeve will be increased, preventing the clamping sleeve from opening and preventing the sleeve from moving upward; during disassembly, only need to push the sleeve upward to end the limitation of the clamping sleeve, thus facilitating the disassembly, maintenance, and replacement of the lead.

[0007] Further, the sleeve is slidably connected to the support cylinder, and the cross-section of the sleeve is in the shape of "儿". It should be noted that the description of "无非开口销、开槽、串接钢丝、焊接、粘合等,分为可拆卸和不可拆卸,可拆卸由于设置了其他结构或其他螺母,增加了结构的繁琐度,导致拆卸维护和更换引线时拆装操作较为繁琐,而不可拆卸结构更为不便,还会破坏螺栓造成浪费。" in the original text seems to be incomplete or inaccurate in expression. The above translation tries to make sense of it as best as possible. You may need to check and correct the original text for a more accurate translation.

[0008] By adopting the above technical solution, when installing the lead, the worker lifts the sleeve upward, the sleeve slides upward to compress the spring, and after the worker lets go, the sleeve is driven downward by the spring.

[0009] Furthermore, the sleeve abuts against the limiting plate, and the diameter of the limiting plate is greater than the diameter of the jacket.

[0010] By adopting the above technical solution, the sleeve is driven downward by the spring, and then the sleeve abuts against the limit plate to prevent the sleeve from falling downward.

[0011] Furthermore, the sleeve abuts against the jacket, and the jacket is rotatably connected to the support tube.

[0012] By adopting the above technical solution, the staff member lets go of the handle and no longer holds it. At this time, the sleeve is driven downward by the spring, and after the sleeve moves downward, the four jackets are driven to rotate towards each other.

[0013] Furthermore, four of the jackets and four of the pads are provided, and the four jackets and pads are distributed in a ring array.

[0014] By adopting the above technical solution, a whole annular structure is formed by the cooperation of four jackets and clamping pads, which is convenient for clamping and fastening leads such as copper rods and copper wires.

[0015] Furthermore, the clamping pad is made of rubber material.

[0016] By adopting the above technical solution, the four clamping sleeves rotate towards each other and cooperate with the clamping pads to clamp the lead wires. During this process, the clamping pads prevent the lead wires from being clamped and increase the friction force to prevent loosening.

[0017] Furthermore, a mounting hole is provided on the outer surface of the fixing frame, and threading holes are provided on the top of the fixing frame and the top of the supporting tube.

[0018] By adopting the above technical solution, the staff connects the bolts to the transformer through the mounting holes, thereby completing the installation operation of the fixing frame, and then the staff can pass the lead wires through the threading holes.

[0019] Furthermore, a handle is connected to the outer surface of the sleeve.

[0020] By adopting the above technical solution, the staff grasps the handle and lifts it upward, thereby causing the sleeve to slide upward. When the staff lets go of the handle and no longer holds it, the sleeve slides downward.

[0021] In summary, the utility model mainly has the following beneficial effects:

[0022] The utility model arranges a sleeve, a spring, a limiting plate, a sleeve and a clamping pad. After the lead wire is passed through the threading hole, the spring drives the sleeve to move downward. After the sleeve moves downward, the four sleeves are driven to rotate towards each other and cooperate with the clamping pad to clamp the lead wire. During the process, the clamping pad prevents the lead wire from being clamped and increases the friction force to prevent loosening. Then the sleeve and the limiting plate abut against each other to prevent the sleeve from falling off downward. After clamping, the sleeve is always subjected to a downward force due to the influence of gravity and the elastic force of the spring, thereby limiting the sleeve to prevent the sleeve from opening, and when the sleeve is affected by vibration and exerts force outward, since the movement directions of the sleeve and the sleeve are different, only the friction force between the sleeve and the sleeve will be increased, thereby preventing the sleeve from opening and preventing the sleeve from moving upward. When disassembling, it is only necessary to push the sleeve upward to end the limitation of the sleeve, thereby facilitating the disassembly and assembly of the lead wire for maintenance. The disassembly and assembly structure is simple and easy to operate, and the anti-loosening effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the support tube when the utility model is clamped;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the support tube of the utility model when it is opened;

[0026] Figure 4 It is a schematic diagram of the explosion structure of the support tube of the utility model.

[0027] In the figure: 1. fixing frame; 2. mounting hole; 3. threading hole; 4. handle; 5. support tube; 6. sleeve; 7. spring; 8. limit plate; 9. clamping sleeve; 10. clamping pad. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0029] The following describes an embodiment of the utility model based on its overall structure.

[0030] Embodiment 1:

[0031] A transformer lead fastening device, such as Figure 1-Figure 4As shown, it includes a fixing frame 1, a supporting cylinder 5 is fixed at the bottom of the fixing frame 1, a jacket 9 is connected to the bottom of the supporting cylinder 5, a sleeve 6 is in contact with the jacket 9, the jacket 9 is rotatably connected to the supporting cylinder 5, a clamping pad 10 is connected to one side of the jacket 9, the clamping pad 10 is made of rubber material, four jackets 9 and four clamping pads 10 are provided, and the four jackets 9 and the clamping pads 10 are distributed in a circular array. After the sleeve 6 moves down, the four jackets 9 are driven to rotate towards each other to cooperate with the clamping pads 10 to clamp the lead wire, during which the clamping pads 10 prevent the lead wire from being drawn. The wire is clamped and the friction force is increased to prevent loosening; a limiting plate 8 is fixed at the bottom of the jacket 9, the diameter of the limiting plate 8 is larger than the diameter of the jacket 9, the sleeve 6 abuts against the limiting plate 8, and the sleeve 6 abuts against the limiting plate 8 to prevent the sleeve 6 from falling off downward; a sleeve 6 is sleeved on the outside of the support tube 5, and the sleeve 6 is slidably connected to the support tube 5. The cross-section of the sleeve 6 is in the shape of a "child", and a spring 7 is connected between the sleeve 6 and the fixed frame 1. The spring 7 drives the sleeve 6 to move downward, and after the sleeve 6 moves downward, it drives the four jackets 9 to rotate towards each other.

[0032] See also Figure 1-Figure 4 In the above embodiment, a mounting hole 2 is provided on the outer surface of the fixing frame 1, and threading holes 3 are provided on the top of the fixing frame 1 and the top of the support tube 5. The staff passes the bolts through the mounting holes 2 and connects them to the transformer, thereby completing the installation operation of the fixing frame 1.

[0033] Embodiment 2:

[0034] On the basis of the above-mentioned embodiment 1, in order to facilitate the control of the sleeve 6, the following configuration is adopted.

[0035] See also Figure 1 and Figure 4 In the above embodiment, the outer surface of the sleeve 6 is connected to a handle 4, and the staff grasps the handle 4 and lifts it upward, thereby sliding the sleeve 6 upward.

[0036] The implementation principle of the utility model is as follows: first, the staff connects the bolts to the transformer through the mounting holes 2, thereby completing the installation operation of the fixing frame 1;

[0037] When installing the lead, the worker grabs the handle 4 and lifts it upward, so that the sleeve 6 slides upward to compress the spring 7, and then the worker can pass the lead through the threading hole 3. After the lead passes through the threading hole 3, the worker lets go of the handle 4, and the sleeve 6 is driven downward by the spring 7. After the sleeve 6 moves downward, it drives the four clamping sleeves 9 to rotate towards each other and cooperate with the clamping pad 10 to clamp the lead. During this period, the clamping pad 10 prevents the lead from being clamped and increases the friction to prevent it from loosening;

[0038] After clamping, the sleeve 6 is always subjected to a downward force due to the influence of gravity and the elastic force of the spring 7, thereby limiting the position of the jacket 9 to prevent the jacket 9 from opening. At the same time, the sleeve 6 abuts against the limiting plate 8 to prevent the sleeve 6 from falling off downward. When the jacket 9 is affected by vibration and exerts force outward, since the jacket 9 and the sleeve 6 move in different directions, it will only increase the friction between the jacket 9 and the sleeve 6, thereby preventing the jacket 9 from opening and preventing the sleeve 6 from moving upward.

[0039] During disassembly, the staff member grabs the handle 4 again and lifts it upward, so that the sleeve 6 moves upward to end the limit on the jacket 9, thereby ending the clamping of the lead wire, and then the staff member can disassemble and assemble the maintenance lead wire.

[0040] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A transformer lead fastening device, comprising a fixing frame (1), characterized in that: A support cylinder (5) is fixed to the bottom of the fixing bracket (1), and a jacket (9) is connected to the bottom of the support cylinder (5). A clamping pad (10) is connected to one side of the jacket (9), and a limiting plate (8) is fixed to the bottom of the jacket (9). A sleeve (6) is sleeved outside the support cylinder (5), and a spring (7) is connected between the sleeve (6) and the fixing bracket (1).

2. The transformer lead fastening device according to claim 1, characterized in that: The sleeve (6) is slidably connected to the support cylinder (5), and the cross-section of the sleeve (6) is in the shape of "儿".

3. The transformer lead fastening device according to claim 2, characterized in that: The sleeve (6) abuts against the limiting plate (8), and the diameter of the limiting plate (8) is larger than the diameter of the jacket (9).

4. The transformer lead fastening device according to claim 3, characterized in that: The sleeve (6) abuts against the jacket (9), and the jacket (9) is rotatably connected to the support cylinder (5).

5. The transformer lead fastening device according to claim 1, characterized in that: Both the jacket (9) and the clamping pad (10) are provided with four, and the four jackets (9) and clamping pads (10) are distributed in an annular array.

6. The transformer lead fastening device according to claim 5, characterized in that: The clamping pad (10) is made of rubber material.

7. The transformer lead fastening device according to claim 1, characterized in that: Mounting holes (2) are formed on the outer surface of the fixing bracket (1), and threading holes (3) are formed on the tops of both the fixing bracket (1) and the support cylinder (5).

8. The transformer lead fastening device according to claim 1, characterized in that: A handle (4) is connected to the outer surface of the sleeve (6).

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