Riveting equipment for supporting flange of on-load tap-changer

Abstract

The utility model relates to riveting equipment for an on-load tap-changer supporting flange, and the riveting equipment comprises a working rack, the working rack is provided with a riveting assembly and a fixing assembly, the riveting assembly comprises a balance crane arranged on the working rack, the telescopic end of the balance crane is provided with a mounting rack, the mounting rack is provided with a direct pressure type gas-liquid pressure cylinder, and the fixing assembly is arranged on the working rack. The fixing assembly comprises a fixing frame, a fixing air cylinder is arranged on the fixing frame, a stopping block is arranged on an output shaft of the fixing air cylinder, a sliding groove is formed in the mounting frame, and a supporting block is connected into the sliding groove in a sliding mode. In the riveting process, the stop block abuts against the outer end face of the insulating cylinder, and the supporting block abuts against the inner side wall of the insulating cylinder to limit the insulating cylinder. The riveting device has the effect of improving the riveting quality of the supporting flange and the insulating cylinder.

Description

Technical Field

[0001] This application relates to the field of on-load tap changer assembly technology, and in particular to a riveting device for an on-load tap changer support flange. Background Technology

[0002] An on-load tap changer is a voltage regulating device suitable for operation under transformer excitation or load, used to change the tap changer position of the transformer windings. The oil chamber is a key component of the on-load tap changer, making its manufacturing and assembly process crucial. (Refer to...) Figure 1 The oil chamber of an on-load tap changer typically consists of an insulating cylinder 01 and a supporting flange 02. When assembling the oil chamber, the supporting flange 02 needs to be riveted to the end of the insulating cylinder 01.

[0003] In the existing riveting process, workers need to hold a riveting gun and visually aim at the riveting position to rivet. However, during the riveting process, the insulating cylinder is prone to displacement due to impact force. After displacement, the riveting position of the insulating cylinder and the supporting flange deviates, thereby reducing the riveting quality of the supporting flange and the insulating cylinder, which in turn leads to a decrease in the sealing quality of the oil chamber, which is obviously insufficient. Utility Model Content

[0004] To improve the riveting quality of the support flange and the insulating cylinder, this application provides a riveting device for the support flange of an on-load tap changer.

[0005] The riveting device for the support flange of an on-load tap changer provided in this application adopts the following technical solution:

[0006] A riveting device for an on-load tap changer support flange includes a workbench on which a riveting assembly and a fixing assembly are provided.

[0007] The riveting assembly includes a balance hanger mounted on the workbench frame. The telescopic end of the balance hanger is provided with a mounting frame. A direct-pressure pneumatic-hydraulic booster cylinder is mounted on the mounting frame. The output shaft of the direct-pressure pneumatic-hydraulic booster cylinder is provided with a riveting guide rod. The riveting guide rod slides through the mounting frame. A rivet is provided at the end of the riveting guide rod.

[0008] The fixing assembly includes a fixing frame, on which a fixing cylinder is mounted. The output shaft of the fixing cylinder is equipped with a blocking block, which is vertically positioned. The mounting frame has a sliding groove, in which a support block is slidably connected. The support block is perpendicular to the blocking block. When the fixing assembly fixes the insulating cylinder, the support block and the blocking block are respectively positioned on opposite sides of the insulating cylinder. The blocking block abuts against the outer end face of the insulating cylinder, and the support block abuts against the inner sidewall of the insulating cylinder.

[0009] By adopting the above technical solution, during riveting, the supported flange is first placed on the insulating cylinder, and then the insulating cylinder is placed on the fixing frame. The fixing cylinder pushes the blocking block to abut against the outer end face of the insulating cylinder. Then, the telescopic end of the balance crane drives the mounting frame to approach the insulating cylinder. After the mounting frame is in place, the worker pushes the support block into the interior of the insulating cylinder and abuts against the inner side wall of the insulating cylinder. After fixing, the direct-pressure pneumatic-hydraulic booster cylinder drives the riveting guide rod and rivets to rivet the supporting flange and the insulating cylinder. The setting of the fixing component realizes the fixing of the insulating cylinder during riveting, avoiding the possibility of the insulating cylinder shaking when subjected to external force. At the same time, the support block provides stable support force for the riveting point of the insulating cylinder, further improving the stability of the insulating cylinder during riveting, thereby improving the riveting quality of the supporting flange and the insulating cylinder.

[0010] Optionally, the workbench is provided with two parallel first guide rails, and the two first guide rails are slidably connected to a second guide rail along the length direction. The second guide rail is perpendicular to the first guide rail, and the balance crane is slidably connected to the second guide rail through a pulley system.

[0011] By adopting the above technical solution, when the fixed position of the insulating cylinder on the fixed frame changes, the worker can quickly change the position of the balance crane relative to the insulating cylinder through the first guide rail and the second guide rail. This setting improves the flexibility of the riveting device, facilitates adaptive changes according to different specifications of insulating cylinders, and improves the flexibility of the riveting equipment.

[0012] Optionally, a mounting groove is provided at the center of the riveting guide rod, and a cross infrared laser sight is provided inside the mounting groove.

[0013] By adopting the above technical solution, during riveting, the cross infrared laser sight located at the center of the riveting guide rod emits a laser signal. At this time, the worker can accurately align the riveting point between the support flange and the insulating barrel with the laser, reducing the difficulty of manual aiming, thereby further improving the riveting accuracy and reducing the scrap rate caused by riveting position deviation.

[0014] Optionally, the fixing frame is provided with a plurality of support components along its length, and the support components include support wheels rotatably disposed on opposite sides of the fixing frame, with both support wheels abutting against the outer surface of the insulating cylinder.

[0015] By adopting the above technical solution, the riveting position of the insulating cylinder needs to be constantly adjusted during the riveting process. The rolling friction of the support wheel makes the rotation of the insulating cylinder smoother, making it easier for workers to adjust the position of the insulating cylinder.

[0016] Optionally, a trigger block is provided at the end of the support block, a limit switch is provided at the end of the mounting bracket facing the trigger block, and a button for controlling the start and stop of the direct-pressure gas-liquid booster cylinder is provided on the mounting bracket. The limit switch is electrically connected to the button through the control system.

[0017] By adopting the above technical solution, when the insulating barrel is placed in place, the support block moves towards the inside of the insulating barrel, which in turn moves the trigger block. When the support block moves to the designated position, the trigger block touches the limit switch, and the limit switch activates the button. At this time, the worker can control the start and stop of the direct-pressure pneumatic-hydraulic booster cylinder by pressing the button. This setting avoids the occurrence of accidental manual operation and ensures that the riveting work can only be carried out after the insulating barrel is fixed, thus ensuring the safety of the workers.

[0018] Optionally, a support frame is provided on the outer surface of the fixing frame, and a rivet material tray is detachably connected to the support frame by connecting bolts, and multiple rivets are placed on the rivet material tray.

[0019] By adopting the above technical solution, during the batch riveting process, workers do not need to frequently leave their work area to retrieve rivets. They can directly take them from the nearby rivet material tray, ensuring timely supply of rivets and improving the continuity of riveting work.

[0020] Optionally, the mounting bracket is provided with a handle.

[0021] By adopting the above technical solution, the handle is designed to facilitate workers in adjusting the position of the balance crane, thereby making it easier for workers to manually adjust the position of the riveting components and improving the flexibility of the riveting operation.

[0022] Optionally, suction cups are provided around the perimeter of the mounting bracket.

[0023] By adopting the above technical solution, the setting of the fixed suction cup improves the fixing effect of the fixing frame on the ground, avoids the riveting misalignment caused by the shaking of the fixing frame during the riveting process, and thus further improves the riveting quality.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. This application achieves the fixation of the insulating cylinder during riveting by setting a fixing component, which avoids the possibility of the insulating cylinder shaking when subjected to external force. At the same time, the support block in the fixing component provides stable support force for the riveting point of the insulating cylinder, further improving the stability of the insulating cylinder during riveting, thereby improving the riveting quality of the support flange and the insulating cylinder.

[0026] 2. By setting up a first guide rail and a second guide rail, when the fixed position of the insulating cylinder in the fixed frame changes, the worker can quickly change the position of the balance crane relative to the insulating cylinder through the first guide rail and the second guide rail. This setting improves the flexibility of the riveting device, makes it easy to make adaptive changes according to different specifications of insulating cylinders, and improves the flexibility of the riveting equipment.

[0027] 3. This application sets up a trigger block, a limit switch, and a button. When the support block moves to the designated position, the trigger block activates the limit switch, which in turn activates the button. At this time, the worker can control the start and stop of the direct-pressure pneumatic-hydraulic booster cylinder by pressing the button. This setting avoids accidental manual operation and ensures that the riveting work can only be carried out after the insulating cylinder is fixed, thus ensuring worker safety. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the oil chamber structure in the background art.

[0029] Figure 2 This is a structural schematic diagram of an embodiment of this application.

[0030] Figure 3 This is a schematic diagram of the structure of the fixed component in the embodiments of this application.

[0031] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0032] Explanation of reference numerals in the attached drawings: 01, Insulating cylinder; 02, Support flange; 1, Workbench frame; 2, Riveting assembly; 21, Balance crane; 22, Mounting bracket; 221, Handle; 222, Sliding groove; 23, Direct pressure pneumatic-hydraulic booster cylinder; 24, Riveting guide rod; 25, Rivet; 3, Fixing assembly; 31, Fixing frame; 311, Fixing suction cup; 32, Fixing cylinder; 33, Blocking block; 34, Support block; 341, Trigger block; 4, First guide rail; 5, Second guide rail; 51, Pulley block; 6, Support assembly; 61, Support wheel; 7, Limit switch; 8, Button; 9, Support frame; 10, Rivet material tray. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0034] This application discloses a riveting device for a support flange of an on-load tap changer.

[0035] Reference Figure 1 and Figure 2A riveting device for an on-load tap changer support flange includes a workbench 1, which is placed on the ground. The workbench 1 is equipped with a riveting assembly 2 and a fixing assembly 3. The riveting assembly 2 is used to rivet the insulating cylinder 01 and the support flange 02.

[0036] Reference Figure 1 and Figure 2 The top of the workbench 1 is fixedly connected to two relatively parallel first guide rails 4. The two first guide rails 4 are slidably connected to a second guide rail 5 along their length. In this embodiment, the second guide rail 5 is square and its length direction is perpendicular to the length direction of the first guide rail 4. The riveting assembly 2 includes a balance hanger 21 slidably connected to the second guide rail 5 via a pulley block 51. The balance hanger 21 is existing technology, and its specific principle will not be described in detail in this embodiment. Workers can quickly change the position of the balance hanger 21 relative to the insulating cylinder 01 through the first guide rails 4 and the second guide rail 5, which improves the flexibility of the riveting assembly 2.

[0037] Reference Figure 2 and Figure 3 The telescopic end of the balance crane 21 is fixedly connected to a mounting frame 22. A handle 221 for workers to hold is fixedly connected to the mounting frame 22. A direct-pressure pneumatic-hydraulic booster cylinder 23 is fixedly connected to the top of the mounting frame 22. In this embodiment, the direct-pressure pneumatic-hydraulic booster cylinder 23 controls the output pressure through a precision pressure regulating valve to prevent excessive pressure from causing deformation and cracking of the riveting between the insulating cylinder 01 and the supporting flange 02.

[0038] Reference Figure 2 and Figure 3 The output shaft of the direct-pressure gas-liquid booster cylinder 23 is provided with a riveting guide rod 24. The riveting guide rod 24 is slidably mounted on the mounting bracket 22. One end of the riveting guide rod 24 is fixedly connected to the output shaft of the direct-pressure gas-liquid booster cylinder 23, and the other end is equipped with a rivet 25 for riveting. The riveting guide rod 24 is provided with a mounting groove (not shown in the figure). The axis of the mounting groove and the axis of the riveting guide rod 24 are on the same straight line. A cross infrared laser sight (not shown in the figure) is fixedly installed inside the mounting groove.

[0039] Reference Figure 2 and Figure 3 The fixing component 3 includes a fixing frame 31, which is set on the ground. Fixing suction cups 311 are fixedly connected to the four corners of the fixing frame 31. The suction surface of the fixing suction cups 311 faces the bottom surface. The suction force of the fixing suction cups 311 on the ground improves the stability of the fixing frame 31 on the ground and prevents the fixing frame 31 from shaking during the riveting process.

[0040] Reference Figure 2 and Figure 3A fixed cylinder 32 is fixedly connected to the fixed frame 31. A blocking block 33 is fixedly connected to the output shaft of the fixed cylinder 32. The sliding direction of the blocking block 33 is parallel to the length direction of the fixed frame 31. The blocking block 33 is vertically set. A sliding groove 222 is opened on the mounting frame 22. The length direction of the sliding groove 222 is parallel to the length direction of the fixed frame 31. A support block 34 is slidably connected in the sliding groove 222. The length direction of the support block 34 is perpendicular to the length direction of the blocking block 33. When the insulating cylinder 01 is placed on the fixed frame 31, the support block 34 and the blocking block 33 are respectively on opposite sides of the insulating cylinder 01. The blocking block 33 abuts against the outer end face of the insulating cylinder 01, and the support block 34 abuts against the inner side wall of the insulating cylinder 01.

[0041] Reference Figure 2 and Figure 3 The fixing frame 31 is provided with a plurality of support components 6 along the length direction. In this embodiment, there are two support components 6. The two support components 6 are respectively provided on both sides of the insulating cylinder 01 along the length direction. The support component 6 includes support wheels 61 rotatably connected to opposite sides of the fixing frame 31. Both support wheels 61 abut against the outer surface of the insulating cylinder 01.

[0042] When riveting the insulating cylinder 01, the worker first places the riveted support flange 02 on the end of the insulating cylinder 01, then places the insulating cylinder 01 on the fixing frame 31, and ensures that the support wheel 61 abuts against the outer surface of the insulating cylinder 01. Then the worker starts the fixing cylinder 32, which pushes the blocking block 33 to move and finally abuts against the outer end face of the insulating cylinder 01, thus completing the fixing of one end of the insulating cylinder 01.

[0043] After the blocking block 33 is in place, the worker holds the handle 221 and slides the balance hoist 21 along the length of the first guide rail 4 and the second guide rail 5. The balance hoist 21 drives the mounting frame 22 to move toward the insulating cylinder 01. When the mounting frame 22 moves to abut against the end face of the insulating cylinder 01 away from the blocking block 33, it pushes the support block 34 into the interior of the insulating cylinder 01 and abuts against the inner wall of the insulating cylinder 01. At this time, the fixing work of the insulating cylinder 01 is completed, avoiding the possibility of the insulating cylinder 01 shaking when subjected to external force. At the same time, the support block 34 provides stable support force for the riveting of the insulating cylinder 01, further improving the stability of the insulating cylinder 01 during riveting, thereby improving the riveting quality of the support flange 02 and the insulating cylinder 01.

[0044] Reference Figure 2 , Figure 3 and Figure 4A trigger block 341 is fixedly connected to the end of the support block 34. The trigger block 341 is set perpendicular to the support block 34. A limit switch 7 is fixedly installed on the end face of the mounting bracket 22 facing the trigger block 341. A button 8 for controlling the start and stop of the direct pressure gas-liquid booster cylinder 23 is installed on the mounting bracket 22. The limit switch 7 is electrically connected to the button 8 through the control system.

[0045] Reference Figure 2 , Figure 3 and Figure 4 A support frame 9 is fixedly installed on the outer surface of the fixed frame 31. The support frame 9 is set vertically. A rivet material tray 10 is detachably connected to the support frame 9 by connecting bolts. Multiple rivets 25 are placed on the rivet material tray 10.

[0046] When the support block 34 abuts against the inner wall of the insulating cylinder 01, the support block 34 moves and causes the trigger block 341 to touch the limit switch 7. The limit switch 7 automatically activates the button 8. Then, the worker visually aims at the center of the rivet 25 through the cross laser sight. After the alignment is completed, the worker presses the button 8 to control the direct pressure pneumatic-hydraulic booster cylinder 23 to start. The direct pressure pneumatic-hydraulic booster cylinder 23 drives the riveting guide rod 24 and the rivet 25 to move toward the support flange 02. Through the counter-support force of the support plate, the rivet 25 is pressed into the support flange 02.

[0047] After one riveting operation is completed, the worker rotates the insulating cylinder 01 to the next riveting position using the support wheel 61. Then, the worker takes a new rivet 25 from the rivet material tray 10 and installs it at the end of the riveting guide rod 24. The above riveting operation is then repeated until the entire riveting process is completed.

[0048] The implementation principle of a riveting device for a support flange of an on-load tap changer according to an embodiment of this application is as follows: When riveting the insulating cylinder 01, the worker first places the support flange 02 to be riveted on the end of the insulating cylinder 01, then places the insulating cylinder 01 on the fixing frame 31, and ensures that the support wheel 61 abuts against the outer surface of the insulating cylinder 01. Then the worker starts the fixing cylinder 32, and the fixing cylinder 32 pushes the blocking block 33 to move and finally abuts against the outer end face of the insulating cylinder 01, thus completing the fixing of one end of the insulating cylinder 01.

[0049] After the blocking block 33 is in place, the worker holds the handle 221 and slides the balance hoist 21 along the length of the first guide rail 4 and the second guide rail 5. The balance hoist 21 drives the mounting frame 22 to move toward the insulating cylinder 01. When the mounting frame 22 moves to abut against the end face of the insulating cylinder 01 away from the blocking block 33, it pushes the support block 34 into the interior of the insulating cylinder 01 and abuts against the inner wall of the insulating cylinder 01. At this time, the fixing work of the insulating cylinder 01 is completed, avoiding the possibility of the insulating cylinder 01 shaking when subjected to external force. At the same time, the support block 34 provides stable support force for the riveting of the insulating cylinder 01, further improving the stability of the insulating cylinder 01 during riveting, thereby improving the riveting quality of the support flange 02 and the insulating cylinder 01.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A riveting device for a support flange of an on-load tap changer, characterized in that, It includes a workbench (1), on which a riveting assembly (2) and a fixing assembly (3) are provided; The riveting assembly (2) includes a balance crane (21) mounted on the workbench (1). The telescopic end of the balance crane (21) is provided with a mounting frame (22). A direct-pressure gas-liquid booster cylinder (23) is mounted on the mounting frame (22). The output shaft of the direct-pressure gas-liquid booster cylinder (23) is provided with a riveting guide rod (24). The riveting guide rod (24) slides through the mounting frame (22). A rivet (25) is provided at the end of the riveting guide rod (24). The fixing component (3) includes a fixing frame (31), a fixing cylinder (32) is provided on the fixing frame (31), a blocking block (33) is provided on the output shaft of the fixing cylinder (32), the blocking block (33) is vertically arranged, a sliding groove (222) is provided on the mounting frame (22), a support block (34) is slidably connected in the sliding groove (222), the support block (34) is perpendicular to the blocking block (33), when the fixing component (3) fixes the insulating cylinder (01), the support block (34) and the blocking block (33) are respectively provided on opposite sides of the insulating cylinder (01), the blocking block (33) abuts against the outer end face of the insulating cylinder (01), and the support block (34) abuts against the inner side wall of the insulating cylinder (01).

2. The riveting device for an on-load tap changer support flange according to claim 1, characterized in that, The workbench (1) is provided with two parallel first guide rails (4), and the two first guide rails (4) are slidably connected to a second guide rail (5) along the length direction. The second guide rail (5) is perpendicular to the first guide rail (4), and the balance crane (21) is slidably connected to the second guide rail (5) through a pulley block (51).

3. A riveting device for an on-load tap changer support flange according to claim 1, characterized in that, An installation groove is provided at the center of the riveting guide rod (24), and a cross infrared laser sight is provided inside the installation groove.

4. A riveting device for an on-load tap changer support flange according to claim 1, characterized in that, The fixing frame (31) is provided with a plurality of support components (6) along the length direction. The support components (6) include support wheels (61) rotatably disposed on opposite sides of the fixing frame (31). Both support wheels (61) abut against the outer surface of the insulating cylinder (01).

5. A riveting device for an on-load tap changer support flange according to claim 1, characterized in that, A trigger block (341) is provided at the end of the support block (34), and a limit switch (7) is provided at the end of the mounting bracket (22) facing the trigger block (341). A button (8) for controlling the start and stop of the direct pressure gas-liquid booster cylinder (23) is provided on the mounting bracket (22). The limit switch (7) is electrically connected to the button (8) through the control system.

6. A riveting device for an on-load tap changer support flange according to claim 1, characterized in that, The outer surface of the fixed frame (31) is provided with a support frame (9), and a rivet material tray (10) is detachably connected to the support frame (9) by connecting bolts. A plurality of rivets (25) are placed on the rivet material tray (10).

7. A riveting device for an on-load tap changer support flange according to claim 1, characterized in that, The mounting bracket (22) is provided with a handle (221).

8. A riveting device for an on-load tap changer support flange according to claim 1, characterized in that, The fixing frame (31) is provided with fixing suction cups (311) on all four sides.

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