Transformer bushing drying device

Abstract

The utility model discloses a transformer bushing drying device, which belongs to the technical field of transformer production, and comprises a baking oven and a pick-and-place mechanism, the baking oven is provided with a pick-and-place port, the pick-and-place mechanism is positioned on one side of the baking oven provided with the pick-and-place port, a material support capable of extending out of the pick-and-place port is mounted in the baking oven, and the material support is provided with a material outlet. The taking and placing mechanism comprises a frame body, a conveying belt is installed on the frame body, a discharging gap is formed between the conveying belt and the baking box, a plurality of through grooves perpendicular to the moving direction of the material support are formed in the material support, sleeves can be placed in the through grooves, and the material support can move to the position below the conveying belt. The frame body is provided with a material pushing mechanism, the material pushing mechanism comprises a driving assembly and a material pushing rod, the driving assembly is connected with the material pushing rod, the production safety can be improved, the labor intensity can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer production, in particular to a drying device for transformer bushings. Background Art

[0002] The transformer bushing is the main insulation device outside the transformer tank. The lead wires of the transformer winding must pass through the insulating bushing to insulate between the lead wires and between the lead wires and the transformer shell, and at the same time play a role in fixing the lead wires.

[0003] During the production process of the bushing, a coagulant or insulating mud is used to be mixed with an insulating tape and wound around the bushing. After the initial shaping process is completed, a drying oven is used for baking to complete the final curing of the bushing and form an insulating layer.

[0004] During the production process of the bushing, manual loading and unloading are usually required. When putting in and taking out some relatively large-sized bushings into and out of the drying oven, it is rather inconvenient, consuming a large amount of physical strength of the operator, and the temperature of the bushing just baked is relatively high, and it is easy to be scalded by the high temperature during manual unloading.

[0005] In view of the problems existing in the above-mentioned prior art, the utility model designs and manufactures a drying device for transformer bushings to overcome the above defects. Summary of the Invention

[0006] For the problems existing in the prior art, a drying device for transformer bushings provided by the utility model can improve production safety, reduce labor intensity and improve production efficiency.

[0007] In order to achieve the above object, the technical solution adopted by the utility model is as follows: A drying device for transformer bushings includes a drying oven and a loading and unloading mechanism. A loading and unloading opening is provided on the drying oven, and the loading and unloading mechanism is located on one side of the drying oven where the loading and unloading opening is provided;

[0008] A material tray capable of extending out from the loading and unloading opening is installed in the drying oven. The loading and unloading mechanism includes a frame body, a conveyor belt is installed on the frame body, and there is a blanking gap between the conveyor belt and the drying oven. A plurality of through grooves perpendicular to the moving direction of the material tray are provided on the material tray. The through grooves can place bushings, the material tray can move to the lower part of the conveyor belt, and the bushings on the conveyor belt can pass through the blanking gap and fall into the through grooves of the material tray;

[0009] A pushing mechanism is installed on the frame body. The pushing mechanism includes a driving component and a plurality of pushing rods corresponding to the through grooves one by one. The driving component is connected to the pushing rods, and the driving component drives the pushing rods to extend into the through grooves to push out the bushings placed in the through grooves.

[0010] Preferably, at least two guide rails are provided on the baking oven. One end of each guide rail is installed inside the baking oven, and the other end of the guide rail extends out from the side of the baking oven where the access opening is provided. A first cylinder is installed on the side of the baking oven away from the access opening, and the telescopic end of the first cylinder is connected to the material tray. The material tray is slidably engaged with the guide rail.

[0011] Preferably, a limit block for restricting the displacement of the material tray is provided at the end of the guide rail extending out of the baking oven.

[0012] Preferably, the driving assembly includes a sliding table, which is connected to the frame. A chute is provided on the sliding table, and a push plate is movably installed on the chute. The moving direction of the push plate is parallel to the length direction of the through groove. The pushing rod is perpendicularly installed on the side of the push plate close to the material tray;

[0013] A motor and a reciprocating lead screw are installed on the sliding table. The reciprocating lead screw is connected to the motor. A sliding seat is provided on the push plate, and the reciprocating lead screw is engaged with the sliding seat.

[0014] Preferably, the width of the pushing rod is the same as the width of the through groove, and the pushing rod is detachably installed on the push plate.

[0015] Preferably, a lifting door is installed on the side of the baking oven where the access opening is provided. A profiling groove matching the guide rail is provided at the lower end of the lifting door. When the profiling groove tightly holds the guide rail, the lifting door closes the access opening.

[0016] Preferably, the lifting door includes a blocking plate and a lifting seat. The lifting seat is fixed on the baking oven, and a second cylinder is installed on the lifting seat. The telescopic end of the second cylinder is connected to the blocking plate, and the profiling groove is provided on the lower end face of the blocking plate.

[0017] Preferably, the lower end face of the blocking plate is parallel to the through groove on the material tray. When the blocking plate is completely lifted, the distance from the upper end face of the material tray to the lower end face of the blocking plate is greater than the diameter of the sleeve.

[0018] Preferably, a buffer plate is rotatably installed on the side of the blocking plate close to the blanking gap. A compression spring is installed on the buffer plate. One end of the compression spring is connected to the buffer plate, and the other end of the compression spring abuts against the blocking plate;

[0019] The distance from the lower end face of the buffer plate to the material tray is greater than the distance from the blocking plate to the material tray.

[0020] Preferably, universal wheels with brakes are provided at the bottom of the frame.

[0021] The beneficial effects of the present utility model are as follows:

[0022] 1. The utility model realizes the automatic loading and unloading of the casing by setting a picking and placing mechanism in cooperation with a movable material carrier, improves the production safety, reduces the labor intensity, and improves the production efficiency.

[0023] 2. The utility model is provided with a lifting door on the baking oven, which can not only play a role in heat preservation and heat insulation when the casing is dried, but also play a role in assisting in alignment and assisting in returning to position when the casing is loaded.

[0024] 3. The utility model is equipped with universal wheels with brakes on the frame of the picking and placing mechanism, which is convenient to separate the picking and placing mechanism from the baking oven, leaving enough operating space for overhauling the baking oven and the picking and placing mechanism, and facilitating disassembly and assembly for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a side view of a transformer casing drying device of the utility model;

[0026] Figure 2 is a top view of a transformer casing drying device of the utility model;

[0027] Figure 3 is a top view of the material carrier of a transformer casing drying device of the utility model;

[0028] Figure 4 is a front view of the baking oven of a transformer casing drying device of the utility model.

[0029] In the figure: 1 - first cylinder, 2 - baking oven, 3 - lifting seat, 4 - second cylinder, 5 - sealing plate, 6 - push plate, 7 - conveyor belt, 8 - frame, 9 - limit block, 10 - guide rail, 11 - pushing rod, 12 - sliding table, 13 - chute, 14 - material carrier, 15 - through groove, 16 - profiling groove, 17 - picking and placing opening, 18 - blanking gap, 19 - buffer plate, 20 - compression spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] For the convenience of those skilled in the art to understand, the following further describes the utility model with reference to the accompanying drawings.

[0031] As Figures 1-4 shown, a transformer casing drying device includes a baking oven 2 and a picking and placing mechanism. The baking oven 2 is provided with a picking and placing opening 17, and the picking and placing mechanism is located on one side of the baking oven 2 where the picking and placing opening 17 is provided, facilitating the loading and unloading of the casing to be dried or dried.

[0032] In the baking oven 2 of the present utility model, a material tray 14 that can extend out from the loading and unloading opening 17 is installed. There are at least two guide rails 10 on the baking oven 2. One end of the guide rail 10 is installed inside the baking oven 2, and the other end of the guide rail 10 extends out from the side of the baking oven 2 where the loading and unloading opening 17 is provided. A limit block 9 for restricting the displacement of the material tray 14 is provided at the end of the guide rail 10 that extends out of the baking oven 2. On the side of the baking oven 2 away from the loading and unloading opening 17, a first cylinder 1 is installed. The telescopic end of the first cylinder 1 is connected to the material tray 14, and the material tray 14 is in sliding fit with the guide rail 10.

[0033] Specifically, the sleeve is placed on the material tray 14. The first cylinder 1 can drive the material tray 14 to reciprocate along the guide rail 10. The entry and exit of the sleeve into and out of the baking oven 2 can be controlled by the first cylinder 1, avoiding the situation where workers take materials from the baking oven 2 and are scalded by the high temperature inside the furnace, and improving the safety of production.

[0034] The loading and unloading mechanism of the present utility model includes a frame body 8. The bottom of the frame body 8 is provided with universal wheels with brakes, which is convenient for moving and overhauling the loading and unloading mechanism. A conveyor belt 7 is installed on the frame body 8. There is a blanking gap 18 between the conveyor belt 7 and the baking oven 2. On the material tray 14, there are a number of through grooves 15 perpendicular to the moving direction of the material tray 14. The sleeves can be placed in the through grooves 15. The through grooves 15 can limit the sleeves, avoiding the displacement, mutual collision or falling off the material tray 14 of the sleeves when the material tray 14 moves, and affecting the production quality.

[0035] Specifically, the material tray 14 can move to the lower part of the conveyor belt 7. A number of sleeves to be dried are placed on the conveyor belt 7. When the conveyor belt 7 conveys the sleeves towards the baking oven 2, the first cylinder 1 is also started to drive the material tray 14 to move in the same direction as the conveyor belt 7. The sleeves that fall from the conveyor belt 7 can pass through the blanking gap 18 and fall into the through grooves 15 of the material tray 14, realizing the feeding of the sleeves, reducing the labor intensity and improving the production efficiency.

[0036] On the side of the baking oven 2 of the present utility model where the loading and unloading opening 17 is provided, a lifting door is installed. The lower end of the lifting door is provided with a profiling groove 16 matching the guide rail 10. When the profiling groove 16 tightly holds the guide rail 10, the lifting door closes the loading and unloading opening 17. During the process of drying the sleeves in the baking oven 2, the lifting door blocks the baking oven 2, playing a role in heat insulation and heat preservation, avoiding heat dissipation and improving the drying effect.

[0037] Specifically, the lifting door includes a sealing plate 5 and a lifting seat 3. The sealing plate 5 is made of heat-insulating material. The lifting seat 3 is fixed on the baking oven 2. A second cylinder 4 is installed on the lifting seat 3. The telescopic end of the second cylinder 4 is connected to the sealing plate 5. The profiling groove 16 is arranged on the lower end face of the sealing plate 5.

[0038] The lower end surface of the plugging plate 5 of the present utility model is parallel to the through groove 15 on the material support 14. When the plugging plate 5 is fully lifted, the distance from the upper end surface of the material support 14 to the lower end surface of the plugging plate 5 is greater than the diameter of the sleeve. When feeding the sleeve, the plugging plate 5 and the material support 14 move relative to each other, and can push the misaligned sleeves falling on the conveyor belt 7 into the through groove 15, playing a role in assisting feeding.

[0039] On one side of the plugging plate 5 of the present utility model close to the blanking gap 18, a buffer plate 19 is rotatably installed. A compression spring 20 is installed on the buffer plate 19. One end of the compression spring 20 is connected to the buffer plate 19, and the other end of the compression spring 20 abuts against the plugging plate 5. When the sleeve falls from one end of the conveyor belt 7 close to the plugging plate 5, it will be blocked by the buffer plate 19 during the process of passing through the blanking gap 18. Due to its own gravity, the sleeve presses down the buffer plate 19, and the compression spring 20 is stressed to make the buffer plate 19 rotate slowly, slowing down the falling speed of the sleeve, avoiding damage to the sleeve during falling or hitting the material support 14;

[0040] Specifically, the distance from the lower end surface of the buffer plate 19 to the material support 14 is greater than the distance from the plugging plate 5 to the material support 14. When the buffer plate 19 is fully lifted to limit and push the sleeve, the buffer plate 19 will not interfere with the movement of the sleeve.

[0041] A pushing mechanism is installed on the frame 8 of the present utility model. The pushing mechanism includes a driving component and a plurality of pushing rods 11 corresponding to the through grooves 15 one by one. The width of the pushing rod 11 is the same as the width of the through groove 15, and can extend into the through groove 15 to push out the sleeve placed therein. The driving component includes a sliding table 12, the sliding table 12 is connected to the frame 8, a sliding groove 13 is provided on the sliding table 12, a pushing plate 6 is movably installed on the sliding groove 13, the moving direction of the pushing plate 6 is parallel to the length direction of the through groove 15, the pushing rod 11 is vertically installed on the side of the pushing plate 6 close to the material support 14, and the pushing rod 11 is detachably installed on the pushing plate 6;

[0042] A motor and a reciprocating lead screw are installed on the sliding table 12 of the present utility model. The reciprocating lead screw is connected to the motor, and a sliding seat is provided on the pushing plate 6. The reciprocating lead screw is matched with the sliding seat;

[0043] Specifically, after drying is completed, the second cylinder 4 drives the plugging plate 5 to rise, opening the picking and placing port 17. The first cylinder 1 can drive the material support 14 to slide out of the baking oven 2 until the material support 14 abuts against the limit block 9 and stops moving. At this time, the motor drives the reciprocating lead screw to rotate, making the pushing plate 6 move along the sliding groove 13 towards the material support 14. The pushing rod 11 on the pushing plate 6 is inserted from one end of the through groove 15 and moves towards the other end of the through groove 15, pushing out the sleeve placed in the through groove 15, realizing automatic blanking of the sleeve, reducing the labor intensity of workers, and avoiding workers being scalded by the high-temperature sleeve, improving the safety of production.

[0044] It should be understood that the use of these embodiments is only for illustrating the present utility model rather than intending to limit the protection scope of the present utility model. In addition, it should also be understood that after reading the technical content of the present utility model, those skilled in the art can make various changes, modifications and / or variations to the present utility model, and all these equivalent forms also fall within the protection scope defined by the appended claims of this application.

Claims

1. A transformer bushing drying device, characterized in that, It includes an oven (2) and a picking and placing mechanism. There is a picking and placing opening (17) on the oven (2), and the picking and placing mechanism is located on one side of the oven (2) where the picking and placing opening (17) is provided; A material tray (14) that can extend out from the picking and placing opening (17) is installed inside the oven (2). The picking and placing mechanism includes a frame body (8). A conveyor belt (7) is installed on the frame body (8). There is a blanking gap (18) between the conveyor belt (7) and the oven (2). A number of through grooves (15) perpendicular to the moving direction of the material tray (14) are provided on the material tray (14). Sleeves can be placed in the through grooves (15). The material tray (14) can move below the conveyor belt (7), and the sleeves on the conveyor belt (7) can pass through the blanking gap (18) and fall into the through grooves (15) of the material tray (14); A pushing mechanism is installed on the frame body (8). The pushing mechanism includes a driving component and a number of pushing rods (11) corresponding to the through grooves (15) one by one. The driving component is connected to the pushing rods (11), and the driving component drives the pushing rods (11) to extend into the through grooves (15) to push out the sleeves placed in the through grooves (15).

2. The drying device for transformer bushings according to claim 1, characterized in that, At least two guide rails (10) are provided on the oven (2). One end of the guide rail (10) is installed inside the oven (2), and the other end of the guide rail (10) extends out from the side of the oven (2) where the picking and placing opening (17) is provided. A first cylinder (1) is installed on the side of the oven (2) away from the picking and placing opening (17). The telescopic end of the first cylinder (1) is connected to the material tray (14), and the material tray (14) is in sliding fit with the guide rail (10).

3. The drying device for transformer bushings according to claim 2, characterized in that, A limit block (9) for restricting the displacement of the material tray (14) is provided at the end of the guide rail (10) extending out of the oven (2).

4. A transformer bushing drying device according to claim 1, characterized in that, The driving component includes a sliding table (12). The sliding table (12) is connected to the frame body (8). A chute (13) is provided on the sliding table (12). A push plate (6) is movably installed on the chute (13). The moving direction of the push plate (6) is parallel to the length direction of the through groove (15). The pushing rod (11) is vertically installed on the side of the push plate (6) close to the material tray (14); A motor and a reciprocating lead screw are installed on the sliding table (12). The reciprocating lead screw is connected to the motor. A sliding seat is provided on the push plate (6), and the reciprocating lead screw is in cooperation with the sliding seat.

5. A transformer bushing drying device according to claim 4, characterized in that, The width of the pushing rod (11) is the same as the width of the through groove (15), and the pushing rod (11) is detachably installed on the push plate (6).

6. The drying device for transformer bushings according to claim 2, wherein, A lifting door is installed on the side of the oven (2) where the picking and placing opening (17) is provided. A profiling groove (16) matching the guide rail (10) is provided at the lower end of the lifting door. When the profiling groove (16) tightly holds the guide rail (10), the lifting door closes the picking and placing opening (17).

7. A transformer bushing drying device according to claim 6, characterized in that, The lifting door includes a sealing plate (5) and a lifting seat (3). The lifting seat (3) is fixed on the baking oven (2). A second cylinder (4) is installed on the lifting seat (3). The telescopic end of the second cylinder (4) is connected to the sealing plate (5). The profiling groove (16) is arranged on the lower end surface of the sealing plate (5).

8. A transformer bushing drying device according to claim 7, characterized in that, The lower end surface of the sealing plate (5) is parallel to the through groove (15) on the material support (14). When the sealing plate (5) is fully lifted, the distance from the upper end surface of the material support (14) to the lower end surface of the sealing plate (5) is greater than the diameter of the sleeve.

9. A transformer bushing drying device according to claim 7, characterized in that, A buffer plate (19) is rotatably installed on one side of the sealing plate (5) close to the blanking gap (18). A compression spring (20) is installed on the buffer plate (19). One end of the compression spring (20) is connected to the buffer plate (19), and the other end of the compression spring (20) abuts against the sealing plate (5). The distance from the lower end surface of the buffer plate (19) to the material support (14) is greater than the distance from the sealing plate (5) to the material support (14).

10. The drying device for a transformer bushing according to claim 1, characterized in that, The bottom of the frame body (8) is provided with universal wheels with brakes.

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