Process and equipment for assembling and maintaining oversized and overweight post porcelain insulator

Abstract

The invention is applicable to the technical field of preparation of rod-shaped pillar porcelain insulators, and provides an assembly and maintenance process and equipment for an oversized and overweight pillar porcelain insulator, and the assembly process comprises the following steps: S1, adopting a clearance four-point positioning method, sleeving a resin positioning module on the upper edge of a metal accessory, enabling the thickness of the module to be 1-2mm smaller than a designed cementing clearance, and enabling the thickness of the module to be 1-2mm smaller than that of the designed cementing clearance; the distance between the lower edge of the module and the upper edge of the metal accessory is less than or equal to 20mm. According to the assembly and maintenance process and equipment for the oversized and overweight post porcelain insulator provided by the scheme, the problems of low cementing efficiency, non-uniform filling, maintenance waste and the like of the oversized post porcelain insulator are effectively solved through a four-point positioning method, accurate adjustment of the cementing frame and directional dripping maintenance; and meanwhile, clearance consistency is ensured through positioning of the resin module, the whole root is prevented from being soaked through wet sponge pre-curing and water dripping of the water bag frame, the cementing quality is improved, and metal corrosion and resource waste are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of the preparation of rod-shaped post porcelain insulators, and particularly relates to an assembly, maintenance process and equipment for extra-large size and extra-large weight post porcelain insulators. Background Technique

[0002] Post porcelain insulators are key components of high-voltage transmission systems, and their potting quality directly affects the reliability of equipment operation. At present, the industry generally uses the method of pouring thin ash for potting, that is, filling the gap between the porcelain part and the metal flange by manually pouring cement binder.

[0003] However, for extra-large products with a length exceeding 2 meters and a weight of more than 700 kilograms, this method has obvious defects: 1. The potting efficiency is low, and the inclination angle needs to be repeatedly adjusted, which is time-consuming and labor-intensive; 2. Uneven filling of the binder is likely to cause quality problems such as mud seam pores and dry shrinkage looseness; 3. Traditional water curing or steam curing requires soaking the entire insulator, which not only wastes resources but also causes metal corrosion and porcelain body pollution. Summary of the Invention

[0004] The present invention provides an assembly, maintenance process and equipment for extra-large size and extra-large weight post porcelain insulators, aiming to solve the problems of poor quality stability and serious waste of resources existing in the prior art proposed in the above background technique.

[0005] To solve the above problems, the present invention is implemented as follows. An assembly, maintenance process and equipment for extra-large size and extra-large weight post porcelain insulators includes: Assembly process:

[0006] S1: Adopt the gap four-point positioning method, sleeved the resin positioning module on the upper edge of the metal accessory, the module thickness is 1-2 mm smaller than the designed potting gap, and the distance from the lower edge of the module to the upper edge of the metal accessory is ≤ 20 mm and evenly distributed;

[0007] S2: Cross-tie the porcelain part to fix it, and slowly lift the porcelain body to the assembly station by the crane;

[0008] S3: Fix the lower flange on the potting tray, fix it in place through the positioning pin, fill in the binder and vibrate it flat;

[0009] S4: After the upper flange is buckled on the top of the porcelain part, the whole is hoisted to the lower flange, adjust the gap width between the porcelain part and the accessory to be consistent, the mud seam deviation ≤ 3 mm, and ensure the coaxiality;

[0010] S5: Adjust the height to within the drawing tolerance range through the potting frame handwheel, remove the resin module and fill the potting hole;

[0011] Maintenance process:

[0012] S6: Pre-curing: After the adhesive starts to set (about 2 hours), immediately wrap the upper end face of the adhesive with a wet sponge for pre-curing. The wet sponge is continuously retained until the product is taken off the rack.

[0013] S7: After the adhesive has completely solidified (about 24 hours), take the product off the gluing rack and transfer it to a dedicated curing area (placed on the ground without a bracket). Then, insert the liquid outlet heads of the multi-head high-pressure pipe into the gaps between the water-absorbing sponge and the porcelain parts at intervals of 4 - 6 cm. Hang the water bag on the water bag rack and connect it to the multi-head high-pressure pipe.

[0014] S8: The snap-on support piece wraps the metal accessory, the water-absorbing sponge, and part of the porcelain part. The liquid outlet heads of the multi-head high-pressure pipe drip water at a rate of 2 - 3 drops per second for continuous curing for 3 - 5 days.

[0015] Preferably, the distribution number of the resin positioning modules is 4, and they are symmetrically and evenly arranged circumferentially around the metal accessory. The adhesive is a dry ash or thin ash adhesive, and after filling, it is leveled to remove air bubbles.

[0016] Preferably, the number of the liquid outlet heads of the multi-head high-pressure pipe is configured according to the circumference of the porcelain part at intervals of 4 - 6 cm.

[0017] Preferably, the equipment for assembling and curing the super-large size and super-heavy weight post porcelain insulator in the assembling and curing process of the super-large size and super-heavy weight post porcelain insulator includes: a gluing rack for fixing the post porcelain insulator; a water bag rack arranged on one side of the gluing rack, with a plurality of placing rods installed on the water bag rack, and water bags are hung on each of the plurality of placing rods; a snap-on support piece sleeved at the connection between the post porcelain insulator and the metal accessory for sealing moisture and adapting to porcelain parts with different diameters; a water-absorbing sponge arranged inside the snap-on support piece and wrapped around the upper end face of the adhesive for curing the adhesive; a multi-head high-pressure pipe arranged on one side of the snap-on support piece and with its dropper inserted into the water-absorbing sponge, and the connecting pipe of the multi-head high-pressure pipe is fixedly connected to the water bag.

[0018] Preferably, the gluing rack is composed of a bracket, a fixing frame, a group of gluing plates, a pressing plate, a lead screw, and a driving mechanism. The fixing frame is rotatably installed inside the bracket, and a group of gluing plates are respectively fixedly installed at the upper and lower ends of the fixing frame. The pressing plate is sleeved on the fixing frame. The lead screw is threadedly installed on the upper gluing plate for adjusting the pressing plate up and down, and the lead screw is rotatably connected to the pressing plate; a driving mechanism arranged on the bracket for driving the fixing frame to rotate.

[0019] Preferably, the water bag rack is composed of a support cylinder, a threaded rod, a counterweight plate, and a height adjusting mechanism. The threaded rod is arranged inside the support cylinder, the counterweight plate is fixedly installed at the top of the threaded rod, the counterweight plate and the support cylinder are respectively fixedly connected to a plurality of the placing rods, and the height adjusting mechanism is arranged on the support cylinder for adjusting the height of the counterweight plate.

[0020] Preferably, an annular frame for limiting the post porcelain insulator is provided on the fixing frame, and a plurality of positioning pins for fixing the porcelain insulator are threadedly installed on the annular frame.

[0021] Preferably, the height adjusting mechanism includes: a protective sleeve fixedly installed on the support cylinder; a threaded cylinder rotatably installed on the top of the protective sleeve and threadedly sleeved on the threaded rod for adjusting the height of the threaded rod; a handle rotatably installed on one side of the protective sleeve; and first bevel gears fixedly sleeved on the rotating shaft of the handle and the threaded cylinder respectively, and the two first bevel gears are meshed with each other.

[0022] Preferably, a regulator for adjusting the dripping speed is installed on the connecting pipe.

[0023] Preferably, a guide block for guiding the counterweight plate is fixedly installed on one side of the protective sleeve, a guide rod is fixedly installed at the bottom of the counterweight plate, and the guide rod is inserted into the guide block.

[0024] Compared with the related art, the assembly and maintenance process and equipment for the super-large-size and super-heavy post porcelain insulator provided by the present invention have the following beneficial effects:

[0025] Compared with the prior art, the assembly and maintenance process for the super-large-size and super-heavy post porcelain insulator provided by the present solution improves the cementing efficiency through precise positioning and assembly steps, ensures uniform filling of the cementing agent through precise assembly and vibrating leveling operations, improves the cementing quality, saves water resources by adopting the dripping water maintenance method, and simultaneously avoids the problems of metal corrosion and porcelain body pollution.

[0026] In summary, the assembly and maintenance process and equipment for the super-large-size and super-heavy post porcelain insulator of the present invention effectively solve the problems of low cementing efficiency, uneven filling and waste of maintenance of the super-large post porcelain insulator through the four-point positioning method, precise adjustment of the cementing rack and directional dripping water maintenance. At the same time, by adopting resin module positioning to ensure the consistency of the gap, pre-maintenance with a wet sponge + dripping water from the water bag rack to avoid soaking the whole root, not only improves the cementing quality, but also reduces metal corrosion and resource waste, and is applicable to the efficient assembly and maintenance of ultra-long (>2m) and super-heavy (>700kg) insulators. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a process flow diagram of the assembly of a super-large-size and super-heavy post porcelain insulator provided by the present invention;

[0028] Figure 2 is a process flow diagram of the maintenance of a super-large-size and super-heavy post porcelain insulator provided by the present invention;

[0029] Figure 3 It is the assembly drawing of the cement mounting rack and the porcelain body provided by the present invention;

[0030] Figure 4 It is the assembly drawing of the water bag rack and the porcelain body provided by the present invention;

[0031] Figure 5 It is the schematic diagram of the front view sectional structure of the water bag rack provided by the present invention;

[0032] Figure 6 It is the schematic diagram of the front view structure of the water bag rack provided by the present invention;

[0033] Figure 7 It is the schematic diagram of the rear view sectional structure of the water bag rack provided by the present invention;

[0034] Figure 8 It is the schematic diagram of the top view structure of the positioning mechanism provided by the present invention;

[0035] Figure 9 It is Figure 4 the enlarged structure diagram of part A shown in

[0036] Figure 10 It is Figure 4 the enlarged structure diagram of part B shown in

[0037] Figure 11 It is Figure 5 the enlarged structure diagram of part C shown in

[0038] Reference numerals: 1. Cement mounting rack; 2. Water bag rack; 3. Bracket; 4. Fixed rack; 5. Cement mounting plate; 6. Pressure plate; 7. Lead screw; 8. Driving mechanism; 9. Snap-on support piece; 10. Absorbent sponge; 11. Multi-head high-pressure pipe; 12. Support cylinder; 13. Threaded rod; 14. Counterweight plate; 15. Placing rod; 16. Water bag; 17. Connecting pipe; 18. Ring-shaped rack; 19. Positioning pin; 20. Protective sleeve; 21. Threaded cylinder; 22. Handle; 23. First bevel gear; 24. Installation box; 25. Rotating rod; 26. Limiting piece; 27. Rubber sleeve; 28. Protective box; 29. Round rod; 30. Sprocket; 31. Chain; 32. Rack; 33. Driven gear; 34. Second bevel gear; 35. Guide block; 36. Guide rod. Detailed implementation manners

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order; the terms "inside", "outside", "left", "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0041] The embodiments of the present invention provide an assembly and maintenance process for an extra-large size and extra-large weight post porcelain insulator, as Figures 1-11 shown, including the following steps:

[0042] Assembly process:

[0043] S1: Adopt the gap four-point positioning method to sleeved the resin positioning module on the upper edge of the metal accessory. The thickness of the module is 1-2 mm smaller than the designed cementing gap, and the distance from the lower edge of the module to the upper edge of the metal accessory is ≤ 20 mm and evenly distributed;

[0044] S2: Fix the porcelain part with cross binding ropes, and slowly lift the porcelain body to the assembly station by a crane;

[0045] S3: Fix the lower flange on the cementing plate, fix it in place through the positioning pin 19, fill in the cementing agent and vibrate it flat;

[0046] S4: After the upper flange is buckled on the top of the porcelain part, the whole is hoisted to the lower flange, adjust the gap width between the porcelain part and the accessory to be the same, and the mud joint deviation ≤ 3 mm to ensure coaxiality;

[0047] S5: Adjust the height within the drawing tolerance range through the handwheel of the cementing frame 1, remove the resin module and fill the cementing pit;

[0048] Maintenance process:

[0049] S6: Pre-curing: After the adhesive starts to set (about 2 hours), immediately wrap the upper end face of the adhesive with a wet sponge for pre-curing. The wet sponge is continuously retained until the product is removed from the rack.

[0050] S7: After the adhesive has completely solidified (about 24 hours), remove the product from the gluing rack 1 and transfer it to a dedicated curing area (placed on the ground without a support). Then, insert the liquid outlet heads of the multi-head high-pressure pipe 11 into the gaps between the water-absorbing sponge 10 and the porcelain parts at intervals of 4 - 6 cm. Hang the water bag 16 on the water bag rack 2 and connect it to the multi-head high-pressure pipe 11.

[0051] S8: The snap-on support piece 9 wraps the metal accessory, the water-absorbing sponge 10, and part of the porcelain part. The liquid outlet heads of the multi-head high-pressure pipe 11 drip water at a rate of 2 - 3 drops per second for continuous curing for 3 - 5 days.

[0052] In a further preferred embodiment of the present invention, the distribution number of the resin positioning modules is 4, and they are symmetrically and evenly arranged circumferentially around the metal accessory. The adhesive is a dry ash or thin ash adhesive, and after filling, it is leveled to remove air bubbles.

[0053] In a further preferred embodiment of the present invention, the number of liquid outlet heads of the multi-head high-pressure pipe 11 is configured according to the circumference of the porcelain part at intervals of 4 - 6 cm.

[0054] The present invention also provides a device for curing a post porcelain insulator by using the above-mentioned assembly and curing process for an extra-large size and extra-large weight post porcelain insulator, including: a gluing rack 1 for fixing the post porcelain insulator; a water bag rack 2 provided on one side of the gluing rack 1, and a plurality of placing rods 15 are installed on the water bag rack 2, and water bags 16 are hung on each of the plurality of placing rods 15; a snap-on support piece 9 sleeved at the connection between the post porcelain insulator and the metal accessory for sealing moisture and adapting to porcelain parts of different diameters; a water-absorbing sponge 10 provided inside the snap-on support piece 9 and wrapped around the upper end face of the adhesive for curing the adhesive; a multi-head high-pressure pipe 11 provided on one side of the snap-on support piece 9 and with its dropper inserted into the water-absorbing sponge 10, and a connecting pipe 17 of the multi-head high-pressure pipe 11 is fixedly connected to the water bag 16.

[0055] In this embodiment, the post porcelain insulator is fixed on the gluing rack 1 to provide stable support for the subsequent assembly and curing process. The water bags 16 are hung on the plurality of placing rods 15 of the water bag rack 2. The liquid in the water bags 16 flows into the multi-head high-pressure pipe 11 through the connecting pipe 17. The snap-on support piece 9 is sleeved at the connection between the post porcelain insulator and the metal accessory, playing a role in sealing moisture and at the same time adapting to porcelain parts of different diameters. The dropper of the multi-head high-pressure pipe 11 is inserted into the water-absorbing sponge 10, and the liquid in the water bags 16 is dripped into the water-absorbing sponge 10. After the water-absorbing sponge 10 absorbs the moisture, it cures the adhesive.

[0056] The sealing effect of the snap-on support piece 9 can prevent water loss, ensure that the adhesive is fully cured in a humid environment, improve the strength and stability of the adhesive, and thus improve the assembly quality and service life of the post porcelain insulator. The uniform water absorption characteristic of the water-absorbing sponge 10 can enable the adhesive to be cured evenly, avoiding the problems of insufficient or excessive curing in local areas. The water bag 16 is hung on the water bag rack 2, which is convenient for installation and replacement.

[0057] In a further preferred embodiment of the present invention, the cementing rack 1 is composed of a support 3, a fixing frame 4, a group of cementing plates 5, a pressing plate 6, a lead screw 7 and a driving mechanism 8. The fixing frame 4 is rotatably installed inside the support 3. A group of cementing plates 5 are respectively fixedly installed at the upper and lower ends of the fixing frame 4. The pressing plate 6 is sleeved on the fixing frame 4. The lead screw 7 is threadedly installed on the upper cementing plate 5 for adjusting the pressing plate 6 up and down. The lead screw 7 is rotatably connected to the pressing plate 6. The driving mechanism 8 is arranged on the support 3 for driving the fixing frame 4 to rotate.

[0058] In this embodiment, when fixing the post porcelain insulator on the cementing rack 1, first start the driving mechanism 8. The driving mechanism 8 drives the fixing frame 4 to rotate 90 degrees, changing it from a vertical state to a horizontal state, which is convenient for hoisting the post porcelain insulator between the cementing plates 5 and the pressing plate 6. The upper and lower flanges are fixed on the cementing plates 5 and the pressing plate 6 through the positioning module. Then rotate the handwheel of the lead screw 7 to make the lead screw 7 rotate, driving the pressing plate 6 to move to one side, so that the upper and lower flanges are connected to the post porcelain insulator. After that, the assembly and curing processes can be carried out. The driving mechanism 8 can drive the fixing frame 4 to rotate, changing the fixing frame 4 from a vertical state to a horizontal state, which is convenient for hoisting the post porcelain insulator between the cementing plates 5 and the pressing plate 6, simplifying the operation process and improving the work efficiency. By rotating the lead screw 7 to drive the pressing plate 6 to move, the upper and lower flanges are tightly connected to the post porcelain insulator, ensuring the stability and reliability of the connection, and providing a good foundation for the subsequent assembly and curing processes.

[0059] In a further preferred embodiment of the present invention, the water bag rack 2 is composed of a support cylinder 12, a threaded rod 13, a counterweight plate 14 and a height adjustment mechanism. The threaded rod 13 is arranged inside the support cylinder 12. The counterweight plate 14 is fixedly installed at the top of the threaded rod 13. The counterweight plate 14 and the support cylinder 12 are respectively fixedly connected to a plurality of the placing rods 15. The height adjustment mechanism is arranged on the support cylinder 12 for adjusting the height of the counterweight plate 14.

[0060] In this embodiment, the height of the counterweight plate 14 is adjusted by the height adjustment mechanism. Since the counterweight plate 14 is fixedly connected to the placement rod 15, the water bag 16 located on the counterweight plate 14 (here, the placement rod 15 bears the water bag 16, which can be understood as adjusting to make the water bag 16 on the placement rod 15 reach the corresponding height) can be adjusted according to the height of the upper flange. By flexibly adjusting the height of the water bag 16 according to the height of the upper flange, the water bag 16 is in a suitable position, better meeting the requirements of drip maintenance in the assembly and maintenance process of the post porcelain insulator, improving the adaptability of the equipment. The counterweight plate 14 and the support cylinder 12 are respectively fixedly connected to a plurality of placement rods 15. The setting of the counterweight plate 14 increases the stability of the placement rod 15 and the water bag 16, avoiding affecting the maintenance effect due to the shaking of the water bag 16 during the drip maintenance process.

[0061] In a further preferred embodiment of the present invention, an annular frame 18 for limiting the post porcelain insulator is provided on the fixing frame 4, and a plurality of positioning pins 19 for fixing the porcelain insulator are threadedly installed on the annular frame 18.

[0062] In this embodiment, after placing the post porcelain insulator on the fixing frame 4, by means of the annular frame 18 provided on the fixing frame 4, through a plurality of positioning pins 19 threadedly installed on the annular frame 18, the positioning pins 19 are screwed in until they are in close contact with the post porcelain insulator, thereby realizing the fixation of the post porcelain insulator.

[0063] In a further preferred embodiment of the present invention, the height adjustment mechanism includes: a protective sleeve 20 fixedly installed on the support cylinder 12; a threaded cylinder 21 rotatably installed on the top of the protective sleeve 20 and threadedly sleeved on the threaded rod 13 for adjusting the height of the threaded rod 13; a handle 22 rotatably installed on one side of the protective sleeve 20; first bevel gears 23 respectively fixedly sleeved on the rotating shaft of the handle 22 and the threaded cylinder 21, and the two first bevel gears 23 are meshed with each other.

[0064] In this embodiment, when it is necessary to adjust the height of the water bag 16, the operator rotates the handle 22, and the first bevel gear 23 on the rotating shaft of the handle 22 rotates accordingly. Since the two first bevel gears 23 are meshed with each other, the threaded cylinder 21 is driven to rotate. Because the threaded cylinder 21 is threadedly sleeved on the threaded rod 13, the rotation of the threaded cylinder 21 will cause the threaded rod 13 to move up and down in the support cylinder 12, and then drive the counterweight plate 14 to move up and down, realizing the adjustment of the height of the water bag 16. By rotating the handle 22, the height of the water bag 16 can be adjusted. The operation method is simple and intuitive, and the operator can easily master it without complex training, greatly improving the operation convenience. By using the principle of screw transmission, the rotation of the threaded cylinder 21 can accurately control the moving distance of the threaded rod 13, thereby realizing the precise adjustment of the height of the water bag 16 and ensuring that the water bag 16 can accurately be in the required height position.

[0065] In a further preferred embodiment of the present invention, a regulator for adjusting the dripping speed is installed on the connecting pipe 17.

[0066] In this embodiment, during the maintenance process of the post insulator, the liquid in the water bag 16 drips through the connecting pipe 17 for drip maintenance. A regulator is installed on the connecting pipe 17. The operator can operate the regulator to change the channel size of the connecting pipe 17, thereby controlling the flow rate of the liquid in the connecting pipe 17 and realizing the adjustment of the dripping speed.

[0067] In a further preferred embodiment of the present invention, a guide block 35 for guiding the counterweight plate 14 is fixedly installed on one side of the protective sleeve 20. A guide rod 36 is fixedly installed at the bottom of the counterweight plate 14, and the guide rod 36 is inserted into the guide block 35.

[0068] In this embodiment, when adjusting the height of the counterweight plate 14 through the height adjustment mechanism, the guide block 35 fixedly installed on one side of the protective sleeve 20 plays a guiding role. A guide rod 36 is fixedly installed at the bottom of the counterweight plate 14. When the threaded rod 13 moves up and down under the rotation of the threaded barrel 21 to drive the counterweight plate 14 to move, the guide rod 36 will slide up and down along the guide block 35, thereby guiding the counterweight plate 14 to move in a predetermined direction. Through the cooperation of the guide rod 36 and the guide block 35, stable guidance is provided for the movement of the counterweight plate 14, preventing the counterweight plate 14 from shifting or shaking during the movement process, ensuring the smooth progress of the height adjustment process, and improving the stability of the entire height adjustment mechanism.

[0069] In order to further improve the use effect of the present device, in addition to the above-mentioned solutions, this solution also has the following embodiments:

[0070] In another embodiment of the present invention, a limiting mechanism for preventing the water bag 16 from detaching from the placing rod 15 is provided on the counterweight plate 14. The limiting mechanism includes: a mounting box 24 fixedly installed on the top of the counterweight plate 14; a rotating rod 25 rotatably installed in the mounting box 24; limiting pieces 26 respectively fixedly installed at both ends of the rotating rod 25 for limiting the water bag 16, and the limiting pieces 26 are in rotational contact with one end of the placing rod 25; a rubber sleeve 27 fixedly installed on the top of the counterweight plate 14 and sleeved on the rotating rod 26 for increasing the friction of the rotating rod 26; a connecting mechanism provided on the counterweight plate 14 and the protective sleeve 20 for driving the rotating rod 25 to rotate.

[0071] In this embodiment, when hanging the water bag 16, first lower the height of the counterweight plate 14 to facilitate people to hang the hanging ring of the water bag 16 on the placing rod 15. Then operate the height adjustment mechanism to raise the counterweight plate 14. While the counterweight plate 14 is rising, the connection mechanism runs synchronously to drive the rotating rod 25 to rotate. The rotation of the rotating rod 25 drives the limiting piece 26 to rotate to one end of the placing rod 15, preventing the water bag 16 from detaching from the placing rod 15. In addition, the rubber sleeve 27 increases the friction of the rotating rod 26 to prevent the limiting piece 26 from swinging randomly. Through the setting of the limiting mechanism, it effectively prevents the water bag 16 located at a high place from detaching from the placing rod 15, ensures the stability of the water bag 16 during the hanging and using processes, and reduces the risk of safety accidents caused by the detachment of the water bag 16. During the rising process of the counterweight plate 14, the connection mechanism automatically drives the rotating rod 25 to rotate, so that the limiting piece 26 rotates to a suitable position without additional manual operation, improving the efficiency of hanging the water bag 16 and simplifying the operation process. Through the setting of the rubber sleeve 27, the friction of the rotating rod 26 can be increased to prevent the limiting piece 26 from swinging randomly, ensuring that the limiting mechanism is always in an effective limiting state.

[0072] In another embodiment of the present invention, the connection mechanism includes: a protective box 28 fixedly installed at the bottom of the counterweight plate 14; a connection port opened on the counterweight plate 14, and the connection port is communicated with the installation box 24 and the protective box 28; a round rod 29 rotatably installed at the top of the counterweight plate 14; sprockets 30 respectively arranged in the round rod 29 and the protective box 28, and a chain 31 is sleeved on the two sprockets 30; a rack 32 fixedly installed at the bottom of the counterweight plate 14; a driven gear 33 fixedly sleeved on the rotating shaft of the sprocket 30 located in the protective box 28, and the driven gear 33 meshes with the rack 32; second bevel gears 34 respectively fixedly sleeved on the rotating rod 26 and the round rod 29, and the two second bevel gears 34 mesh with each other.

[0073] In this embodiment, when operating the height adjustment mechanism to raise the counterweight plate 14, the rack 32 fixedly installed at the bottom of the counterweight plate 14 moves accordingly. Since the driven gear 33 meshes with the rack 32, the driven gear 33 will rotate along the rack 32. Because a chain 31 is sleeved on the two sprockets 30, the power is transmitted to the sprocket 30 located in the round rod 29 through the chain 31, causing the round rod 29 to rotate. The rotation of the round rod 29 drives the second bevel gear 34 thereon to rotate, and then through the meshing transmission of the two second bevel gears 34, the power is transmitted to the rotating rod 26, causing the rotating rod 26 to rotate. The rotation of the rotating rod 26 drives the limiting piece 26 to rotate to one end of the placing rod 15, realizing the limitation of the water bag 16.

[0074] In summary, compared with the related technologies, the assembly and maintenance process and equipment for the ultra-large-size and ultra-heavy-strut porcelain insulators effectively solve the problems of low potting efficiency, uneven filling, and maintenance waste of the ultra-large-strut porcelain insulators through the four-point positioning method, precise adjustment of the potting rack, and directional drip maintenance. At the same time, by using resin module positioning to ensure the consistency of the gaps, pre-maintenance with wet sponges + drip from the water bag rack to avoid soaking the whole strut, it not only improves the potting quality but also reduces metal corrosion and resource waste, and is applicable to the efficient assembly and maintenance of ultra-long (>2m) and ultra-heavy (>700kg) insulators.

[0075] In several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions, or other adjustments to the features in the embodiments of the present invention according to the situation without creative efforts, so as to obtain different technical solutions that are essentially not divorced from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. An assembly and maintenance process for an ultra-large size and ultra-heavy weight post porcelain insulator, characterized in that, Including: Assembly process: S1: Adopt the method of four-point positioning with clearance. The resin positioning module is sleeved on the upper edge of the metal accessory. The thickness of the module is 1 - 2 mm smaller than the designed cementing clearance. The distance between the lower edge of the module and the upper edge of the metal accessory is ≤ 20 mm and is evenly distributed; S2: Cross-tie the porcelain piece to fix it, and slowly lift the porcelain body by the hoist to the assembly station; S3: Fix the lower flange on the cementing plate, fix it in place through the positioning pin, fill in the cementing agent and vibrate it flat; S4: After the upper flange is buckled on the top of the porcelain piece, the whole is hoisted to the lower flange. Adjust the clearance width between the porcelain piece and the accessory to be the same, and the deviation of the clay joint is ≤ 3 mm to ensure coaxiality; S5: Adjust the height to within the drawing tolerance range through the handwheel of the cementing rack, remove the resin module and fill the cementing pit; Curing process: S6: Pre-curing: After the cementing agent starts to set (about 2 hours), immediately wrap the upper end face of the cementing agent with a wet sponge for pre-curing, and the wet sponge is continuously retained until it is taken off the rack; S7: After the cementing agent is completely solidified (about 24 hours), take the product off the cementing rack and transfer it to the special curing area (placed on the ground, no support is required). Then, insert the liquid outlet heads of the multi-head high-pressure pipe into the gap between the water-absorbing sponge and the porcelain piece at intervals of 4 - 6 cm, hang the water bag on the water bag rack, and connect it to the multi-head high-pressure pipe; S8: The snap-on support piece wraps the metal accessory, the water-absorbing sponge and part of the porcelain piece, and the liquid outlet heads of the multi-head high-pressure pipe drip water at a speed of 2 - 3 drops / second, and continuously cure for 3 - 5 days.

2. The assembly and maintenance process of the super-large size and super-large weight post porcelain insulator according to claim 1, characterized in that, The distribution quantity of the resin positioning modules is 4, and they are symmetrically and evenly arranged in the circumferential direction of the metal accessory. The cementing agent is dry ash or thin ash cementing agent, and after filling, it is vibrated flat to remove air bubbles.

3. The assembly and maintenance process of the super-large size and super-large weight post porcelain insulator according to claim 1, characterized in that, The quantity of the liquid outlet heads of the multi-head high-pressure pipe is configured according to the circumference of the porcelain piece at intervals of 4 - 6 cm.

4. Equipment for maintaining the post porcelain insulator in the assembly and maintenance process of the extra-large size and extra-large weight post porcelain insulator according to any one of claims 1-3, characterized in that, Including: A cementing rack for fixing the post porcelain insulator; A water bag rack arranged on one side of the cementing rack. A plurality of placing rods are installed on the water bag rack, and water bags are hung on all the plurality of placing rods; A snap-on support piece sleeved at the connection between the post porcelain insulator and the metal accessory for sealing moisture and adapting to porcelain pieces with different diameters; A water-absorbing sponge arranged in the snap-on support piece and wrapped around the upper end face of the cementing agent for curing the cementing agent; A multi-head high-pressure pipe arranged on one side of the snap-on support piece and with its dropper inserted into the water-absorbing sponge. The connection pipe of the multi-head high-pressure pipe is fixedly connected to the water bag.

5. The equipment for assembling and maintaining the super-large size and super-large weight post porcelain insulator as claimed in claim 1, characterized in that The cementing rack is composed of a bracket, a fixing rack, a group of cementing plates, a pressing plate, a lead screw and a driving mechanism. The fixing rack is rotatably installed inside the bracket. A group of cementing plates are respectively fixedly installed at the upper and lower ends of the fixing rack. The pressing plate is sleeved on the fixing rack. The lead screw is threadedly installed on the upper cementing plate for adjusting the pressing plate up and down. The lead screw is rotatably connected to the pressing plate; a driving mechanism arranged on the bracket for driving the fixing rack to rotate.

6. Equipment for assembling and maintaining the super-large size and super-large weight post porcelain insulators as claimed in claim 1, characterized in that, The water bag rack is composed of a support cylinder, a threaded rod, a counterweight plate and a height adjusting mechanism. The threaded rod is arranged inside the support cylinder. The counterweight plate is fixedly installed at the top of the threaded rod. The counterweight plate and the support cylinder are respectively fixedly connected to a plurality of the placing rods. The height adjusting mechanism is arranged on the support cylinder for adjusting the height of the counterweight plate.

7. The equipment for assembling and maintaining the super-large-size and super-heavy-strut porcelain insulators as claimed in claim 1, characterized in that, An annular frame for limiting the post insulator is arranged on the fixing frame, and a plurality of positioning pins for fixing the porcelain insulator are threadedly installed on the annular frame.

8. The equipment for assembling and maintaining the super-large size and super-large weight post porcelain insulator as claimed in claim 1, characterized in that, The height adjustment mechanism includes: A protective sleeve fixedly installed on the support cylinder; A threaded cylinder rotatably installed on the top of the protective sleeve and threadedly sleeved on the threaded rod for adjusting the height of the threaded rod; A handle rotatably installed on one side of the protective sleeve; First bevel gears respectively fixedly sleeved on the rotating shaft of the handle and the threaded cylinder, and the two first bevel gears are meshed with each other.

9. The equipment for assembling and maintaining the super-large size and super-heavy weight post porcelain insulator as claimed in claim 1, characterized in that, A regulator for adjusting the dripping speed is installed on the connecting pipe.

10. The equipment for assembling and maintaining the super-large size and super-large weight post porcelain insulator as described in claim 1, characterized in that, A guide block for guiding the counterweight plate is fixedly installed on one side of the protective sleeve, a guide rod is fixedly installed at the bottom of the counterweight plate, and the guide rod is inserted into the guide block.

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