Hanging inspection device for on-load tap changer of transformer

Abstract

The utility model relates to the technical field of transformer on-load tap changer, and discloses a transformer on-load tap changer lifting inspection device which comprises a top plate, four supporting rods are fixedly arranged on the bottom face of the top plate, a winding drum machine is fixedly arranged on the top face of the top plate, a placing frame is arranged behind the winding drum machine, and the placing frame is arranged on the bottom face of the top plate. A placing plate is arranged below the top plate, a supporting mechanism is arranged below the placing plate, a connecting mechanism is arranged above the top plate, the supporting mechanism comprises a protecting part and a supporting part, and the connecting mechanism comprises a connecting part and a speed reducing part. The damping rods and the connecting springs support the moving plate, then the placing plate is supported, the pressure borne by the placing plate is reduced, the service life of the placing plate is prolonged, the baffle and the closing plate block the transformer on-load tap changer on the placing plate, the transformer on-load tap changer is prevented from falling off during lifting inspection, and the safety of the transformer on-load tap changer is improved. And the safety of hoisting inspection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of on-load tap-changers of transformers, and specifically relates to an on-load tap-changer hoisting and inspection device for transformers. Background Technique

[0002] An on-load tap-changer is a device that can adjust the output voltage of a transformer online. It allows the output voltage to be adjusted by changing the position of the tap under the condition that the transformer is loaded. By controlling the position of the on-load tap-changer, the output voltage of the transformer can be changed, so as to meet the voltage requirements under different load conditions. This adjustment is real-time and online, without interrupting the power supply;

[0003] Due to the excessive weight of the on-load tap-changer of the transformer, when hoisting and inspecting, the on-load tap-changer of the transformer will exert too much pressure on the placement platform, which is likely to damage the placement platform, and then cause the on-load tap-changer of the transformer to fall, resulting in high-altitude danger. Moreover, the placement platform is not provided with a baffle, and when the placement platform shakes, the on-load tap-changer of the transformer is likely to slide off the placement platform.

[0004] Therefore, an on-load tap-changer hoisting and inspection device for transformers is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an on-load tap-changer hoisting and inspection device for transformers to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An on-load tap-changer hoisting and inspection device for transformers, including a top plate, a support rod is fixedly arranged on the bottom surface of the top plate, four support rods are evenly arranged, a winch is fixedly arranged on the top surface of the top plate, a placement rack is arranged behind the winch, a placement plate is arranged below the top plate, a support mechanism is arranged below the placement plate, and a connection mechanism is arranged above the top plate;

[0007] A through groove is opened on the top surface of the top plate, and the steel wire rope on the winch sequentially passes through the placement rack and the through groove and extends to the lower part of the top plate;

[0008] The support mechanism includes a protection part and a support part;

[0009] The connection mechanism includes a connection part and a deceleration part.

[0010] Preferably, the protection part includes a bottom plate, the bottom plate is located below the placement plate, a baffle is fixedly arranged on the top surface of the bottom plate, the placement plate is located inside the baffle and is slidably connected with the inner wall of the baffle, a connection groove is opened on the front surface of the baffle, and the baffle blocks the on-load tap-changer of the transformer.

[0011] Preferably, a closing plate is arranged inside the connecting groove. The closing plate is slidably connected to the inner wall of the connecting groove. A U-shaped frame is fixedly arranged on the front surface of the closing plate. A fixing groove is arranged on the side surface at the lower end of the U-shaped frame. A fixing rod is fixedly arranged on the front surface of the baffle. Placing grooves are arranged on the front surfaces of the left and right ends of the fixing rod. Limiting grooves are arranged at the upper and lower ends of the placing groove. A positioning rod and a cross are fixedly arranged on the inner wall of the placing groove. The cross is sleeved on the outer side surface of the positioning rod and is slidably connected to the positioning rod. The upper and lower ends of the cross penetrate through the limiting grooves and are slidably connected to the inner walls of the limiting grooves. A return spring is sleeved on the outer side surface of the positioning rod. The left and right ends of the return spring are respectively fixedly connected to the cross and the inner wall of the placing groove. The cross is located inside the fixing groove, completing the fixation of the U-shaped frame and the closing plate.

[0012] Preferably, the supporting part includes a moving plate. The top surface of the moving plate is fixedly connected to the placing plate. A moving groove is arranged on the front surface of the moving plate. A connecting rod is hinged to the upper end of the bottom plate. The upper end of the connecting rod is located inside the moving groove and is slidably connected to the inner wall of the moving groove.

[0013] Preferably, fixing plates are arranged on both sides of the moving plate. The top surfaces of the fixing plates are fixedly connected to the placing plate. A damping rod is fixedly arranged on the bottom surface of the fixing plate. A connecting spring is sleeved on the outer side surface of the damping rod. The upper and lower ends of the connecting spring are respectively fixedly connected to the outer side surface of the damping rod. Moving rods are hinged to the front and rear ends of the fixing plate. A positioning frame is arranged at the other end of the moving rod. The bottom surface of the positioning frame is fixedly connected to the bottom plate. A positioning groove is arranged on the side surface of the positioning frame. The lower end of the moving rod is located inside the positioning groove and is slidably connected to the inner wall of the positioning groove. The damping rod and the connecting spring support the moving plate, and further support the placing plate, reducing the pressure on the placing plate.

[0014] Preferably, the connecting part includes a connecting plate. The top surface of the connecting plate is fixedly connected to the steel wire rope. A connecting frame is fixedly arranged on the bottom surface of the connecting plate. The bottom surface of the connecting frame is fixedly connected to the baffle.

[0015] Preferably, four positioning plates are evenly and fixedly arranged on the outer side surface of the connecting plate. The other end of the positioning plate is sleeved on the outer side surface of the adjacent support rod and is slidably connected to the adjacent support rod. The positioning plate slides on the support rod, ensuring the stability of the positioning plate during movement.

[0016] Preferably, the decelerating part includes a fixing frame. The side surface of the fixing frame is fixedly connected to the positioning plate. A gear is arranged on the inner wall of the fixing frame through a bearing. A rack is arranged on the other side of the gear. The top surface of the rack is fixedly connected to the top plate. The gear is meshed with the rack, increasing the resistance during the movement of the positioning plate and the connecting plate.

[0017] Compared with the prior art, the beneficial effects of the present utility model are: This on-load tap-changer lifting and inspection device for transformers

[0018] 1), The moving plate is supported by the damping rod and the connecting spring, and then the placing plate is supported, reducing the pressure on the placing plate and improving the service life of the placing plate. The cross is located in the fixed slot to complete the fixation of the U-shaped frame and the closing plate. The baffle and the closing plate block the on-load tap-changer on the placing plate, preventing the on-load tap-changer from falling during lifting and inspection, and improving the safety of lifting and inspection.

[0019] 2), The connecting plate drives the positioning plate to slide on the support rod, ensuring the stability of the connecting plate during movement, preventing the placing plate from shaking during movement, which may cause the on-load tap-changer to hit the baffle and damage the baffle. The gear is meshed with the rack, increasing the resistance during the movement of the positioning plate and the connecting plate, reducing the sliding speed of the connecting frame and the connecting plate when the steel wire rope breaks, and improving the safety of the device. Description of the Drawings

[0020] Figure 1 is a three-dimensional schematic diagram of the structure of the present utility model;

[0021] Figure 2 is a three-dimensional view of the bottom plate and the baffle of the present utility model;

[0022] Figure 3 is a three-dimensional view of the closing plate and the U-shaped frame of the present utility model;

[0023] Figure 4 is a partial three-dimensional view of the support mechanism of the present utility model;

[0024] Figure 5 is a three-dimensional view of the connecting mechanism of the present utility model.

[0025] In the figure: 1 top plate, 2 support rod, 3 winch, 4 placing rack, 5 support mechanism, 51 bottom plate, 52 baffle, 53 closing plate, 54 U-shaped frame, 55 fixed rod, 56 positioning rod, 57 cross, 58 return spring, 59 moving plate, 510 connecting rod, 511 fixing plate, 512 damping rod, 513 moving rod, 514 positioning frame, 6 placing plate, 7 connecting mechanism, 71 connecting plate, 72 connecting frame, 73 positioning plate, 74 fixing frame, 75 gear, 76 rack. Detailed Embodiments

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0027] Please refer to Figures 1-5 Figures 1-5 , the present utility model provides a technical solution: a on-load tap-changer lifting and inspection device for a transformer, which includes a top plate 1. A support rod 2 is fixedly arranged on the bottom surface of the top plate 1. Four support rods 2 are evenly arranged. A winch 3 is fixedly arranged on the top surface of the top plate 1. A placement rack 4 is arranged behind the winch 3. A placement plate 6 is arranged below the top plate 1. A support mechanism 5 is arranged below the placement plate 6. A connection mechanism 7 is arranged above the top plate 1;

[0028] A through groove is opened on the top surface of the top plate 1. The steel wire rope on the winch 3 sequentially passes through the placement rack 4 and the through groove and extends to the lower part of the top plate 1;

[0029] The support mechanism 5 includes a protection part and a support part;

[0030] The connection mechanism 7 includes a connection part and a deceleration part.

[0031] The protection part includes a bottom plate 51. The bottom plate 51 is located below the placement plate 6. A baffle 52 is fixedly arranged on the top surface of the bottom plate 51. The placement plate 6 is located inside the baffle 52 and is slidably connected with the inner wall of the baffle 52. A connection groove is opened on the front surface of the baffle 52;

[0032] A closing plate 53 is arranged inside the connection groove. The closing plate 53 is slidably connected with the inner wall of the connection groove. A U-shaped frame 54 is fixedly arranged on the front surface of the closing plate 53. A fixing groove is opened on the lower side surface of the U-shaped frame 54. A fixing rod 55 is fixedly arranged on the front surface of the baffle 52. Placement grooves are opened on the front surfaces of the left and right ends of the fixing rod 55. Limiting grooves are opened at the upper and lower ends of the placement groove. A positioning rod 56 and a cross 57 are fixedly arranged on the inner wall of the placement groove. The cross 57 is sleeved on the outer side surface of the positioning rod 56 and is slidably connected with the positioning rod 56. The upper and lower ends of the cross 57 penetrate through the limiting grooves and are slidably connected with the inner walls of the limiting grooves. A return spring 58 is sleeved on the outer side surface of the positioning rod 56. The left and right ends of the return spring 58 are respectively fixedly connected with the cross 57 and the inner wall of the placement groove;

[0033] The support part includes a moving plate 59. The top surface of the moving plate 59 is fixedly connected with the placement plate 6. A moving groove is opened on the front surface of the moving plate 59. A connecting rod 510 is hingedly arranged at the upper end of the bottom plate 51. The upper end of the connecting rod 510 is located inside the moving groove and is slidably connected with the inner wall of the moving groove;

[0034] On both sides of the movable plate 59, there are fixed plates 511. The top surface of the fixed plate 511 is fixedly connected to the placement plate 6. The bottom surface of the fixed plate 511 is fixedly provided with damping rods 512. A connecting spring is sleeved on the outer side surface of the damping rod 512. The upper and lower ends of the connecting spring are respectively fixedly connected to the outer side surface of the damping rod 512. At both the front and rear ends of the fixed plate 511, there are articulated movable rods 513. The other end of the movable rod 513 is provided with a positioning frame 514. The bottom surface of the positioning frame 514 is fixedly connected to the bottom plate 51. A positioning groove is provided on the side surface of the positioning frame 514. The lower end of the movable rod 513 is located inside the positioning groove and is slidably connected to the inner wall of the positioning groove;

[0035] Further, in this embodiment, the on-load tap-changer of the transformer is placed on the placement plate 6. The placement plate 6 moves downward, driving the movable plate 59 and the fixed plate 511 to move downward. The fixed plate 511 drives the lower end of the movable rod 513 to slide in the positioning groove. The damping rod 512 and the connecting spring expand and contract to support the movable plate 59, and thus support the placement plate 6. The left and right cross members 57 move inward, and the closing plate 53 is placed inside the connecting groove. The return spring 58 drives the cross member 57 back to its original position, so that the cross member 57 is in the fixing groove, completing the fixation of the U-shaped frame 54 and the closing plate 53. The baffle 52 and the closing plate 53 block the on-load tap-changer of the transformer on the placement plate 6;

[0036] Further, in this embodiment, the damping rod 512 and the connecting spring support the movable plate 59, and thus support the placement plate 6, reducing the pressure on the placement plate 6 and increasing the service life of the placement plate 6. The cross member 57 is in the fixing groove, completing the fixation of the U-shaped frame 54 and the closing plate 53. The baffle 52 and the closing plate 53 block the on-load tap-changer of the transformer on the placement plate 6, preventing the on-load tap-changer of the transformer from falling during lifting and inspection, and improving the safety of lifting and inspection; Embodiment Two

[0037] Please refer to Figures 1-5 and, on the basis of Embodiment One, it is further obtained that: The connecting part includes a connecting plate 71. The top surface of the connecting plate 71 is fixedly connected to the steel wire rope. The bottom surface of the connecting plate 71 is fixedly provided with a connecting frame 72. The bottom surface of the connecting frame 72 is fixedly connected to the baffle 52;

[0038] Four positioning plates 73 are uniformly and fixedly provided on the outer side surface of the connecting plate 71. The other end of the positioning plate 73 is sleeved on the outer side surface of the adjacent support rod 2 and is slidably connected to the adjacent support rod 2;

[0039] The decelerating part includes a fixed frame 74. The side surface of the fixed frame 74 is fixedly connected to the positioning plate 73. A gear 75 is provided on the inner wall of the fixed frame 74 through a bearing. The other side of the gear 75 is provided with a rack 76. The top surface of the rack 76 is fixedly connected to the top plate 1. The gear 75 is meshed with the rack 76;

[0040] Further, in this embodiment, the connecting frame 72 connects the connecting plate 71 and the baffle 52. When the connecting plate 71 moves, the baffle 52 and the on-load tap-changer on the placing plate 6 are driven to move synchronously by the connecting frame 72. The connecting plate 71 drives the positioning plate 73 to slide on the support rod 2, ensuring the stability of the connecting plate 71 during movement. The gear 75 is meshed with the rack 76 to increase the resistance when the positioning plate 73 and the connecting plate 71 move.

[0041] Further, in this embodiment, the connecting plate 71 drives the positioning plate 73 to slide on the support rod 2, ensuring the stability of the connecting plate 71 during movement, and preventing the placing plate 6 from shaking during movement, which may cause the on-load tap-changer to impact the baffle 52 and damage the baffle 52. The gear 75 is meshed with the rack 76 to increase the resistance when the positioning plate 73 and the connecting plate 71 move, reducing the sliding speed of the connecting frame 72 and the connecting plate 71 when the steel wire rope breaks, and improving the safety of the device.

[0042] During use, place the on-load tap-changer on the placing plate 6. The placing plate 6 moves downward, driving the moving plate 59 and the fixing plate 511 to move downward. The fixing plate 511 drives the lower end of the moving rod 513 to slide in the positioning groove. The damping rod 512 and the connecting spring expand and contract to support the moving plate 59, and thus support the placing plate 6, reducing the pressure on the placing plate 6 and improving the service life of the placing plate 6. Move the left and right cross members 57 inward, place the closing plate 53 inside the connecting groove, and the return spring 58 drives the cross members 57 back to their original positions, making the cross members 57 located in the fixing grooves, completing the fixation of the U-shaped frame 54 and the closing plate 53. The baffle 52 and the closing plate 53 block the on-load tap-changer on the placing plate 6, preventing the on-load tap-changer from falling during lifting inspection and improving the safety of lifting inspection. The connecting frame 72 connects the connecting plate 71 and the baffle 52. When the connecting plate 71 moves, the baffle 52 and the on-load tap-changer on the placing plate 6 are driven to move synchronously by the connecting frame 72. The connecting plate 71 drives the positioning plate 73 to slide on the support rod 2, ensuring the stability of the connecting plate 71 during movement, and preventing the placing plate 6 from shaking during movement, which may cause the on-load tap-changer to impact the baffle 52 and damage the baffle 52. The gear 75 is meshed with the rack 76 to increase the resistance when the positioning plate 73 and the connecting plate 71 move, reducing the sliding speed of the connecting frame 72 and the connecting plate 71 when the steel wire rope breaks, and improving the safety of the device.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to the embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A on-load tap-changer lifting and inspection device for a transformer, comprising a top plate (1), characterized in that: A support rod (2) is fixedly arranged on the bottom surface of the top plate (1). Four support rods (2) are evenly arranged. A winch (3) is fixedly arranged on the top surface of the top plate (1). A placement rack (4) is arranged behind the winch (3). A placement plate (6) is arranged below the top plate (1). A support mechanism (5) is arranged below the placement plate (6). A connection mechanism (7) is arranged above the top plate (1). A through groove is formed on the top surface of the top plate (1). The steel wire rope on the winch (3) sequentially passes through the placement rack (4) and the through groove and extends below the top plate (1). The support mechanism (5) includes a protection part and a support part. The connection mechanism (7) includes a connection part and a deceleration part.

2. The on-load tap-changer lifting and inspection device for a transformer according to claim 1, wherein: The protection part includes a bottom plate (51). The bottom plate (51) is located below the placement plate (6). A baffle (52) is fixedly arranged on the top surface of the bottom plate (51). The placement plate (6) is located inside the baffle (52) and is slidably connected to the inner wall of the baffle (52). A connection groove is formed on the front surface of the baffle (52).

3. The on-load tap-changer lifting and inspection device for a transformer according to claim 2, characterized in that: A closing plate (53) is arranged inside the connection groove. The closing plate (53) is slidably connected to the inner wall of the connection groove. A U-shaped frame (54) is fixedly arranged on the front surface of the closing plate (53). A fixing groove is formed on the side surface of the lower end of the U-shaped frame (54). A fixing rod (55) is fixedly arranged on the front surface of the baffle (52). Placement grooves are formed on the front surfaces of the left and right ends of the fixing rod (55). Limit grooves are formed at the upper and lower ends of the placement groove. A positioning rod (56) and a cross (57) are fixedly arranged on the inner wall of the placement groove. The cross (57) is sleeved on the outer side surface of the positioning rod (56) and is slidably connected to the positioning rod (56). The upper and lower ends of the cross (57) penetrate through the limit grooves and are slidably connected to the inner walls of the limit grooves. A return spring (58) is sleeved on the outer side surface of the positioning rod (56). The left and right ends of the return spring (58) are respectively fixedly connected to the cross (57) and the inner wall of the placement groove.

4. The on-load tap-changer lifting and inspection device for a transformer according to claim 1, wherein: The support part includes a moving plate (59). The top surface of the moving plate (59) is fixedly connected to the placement plate (6). A moving groove is formed on the front surface of the moving plate (59). A connecting rod (510) is hinged to the upper end of the bottom plate (51). The upper end of the connecting rod (510) is located inside the moving groove and is slidably connected to the inner wall of the moving groove.

5. A on-load tap-changer lifting and inspection device for a transformer according to claim 4, characterized in that: Fixing plates (511) are arranged on both sides of the moving plate (59). The top surfaces of the fixing plates (511) are fixedly connected to the placement plate (6). A damping rod (512) is fixedly arranged on the bottom surface of the fixing plate (511). A connecting spring is sleeved on the outer side surface of the damping rod (512). The upper and lower ends of the connecting spring are respectively fixedly connected to the outer side surface of the damping rod (512). Moving rods (513) are hinged to the front and rear ends of the fixing plate (511). A positioning frame (514) is arranged at the other end of the moving rod (513). The bottom surface of the positioning frame (514) is fixedly connected to the bottom plate (51). A positioning groove is formed on the side surface of the positioning frame (514). The lower end of the moving rod (513) is located inside the positioning groove and is slidably connected to the inner wall of the positioning groove.

6. The on-load tap-changer lifting and inspection device for a transformer according to claim 1, characterized in that: The connecting part includes a connecting plate (71). The top surface of the connecting plate (71) is fixedly connected to the steel wire rope. A connecting frame (72) is fixedly arranged on the bottom surface of the connecting plate (71), and the bottom surface of the connecting frame (72) is fixedly connected to the baffle plate (52).

7. The on-load tap-changer lifting and inspection device for a transformer according to claim 6, characterized in that: Four positioning plates (73) are evenly and fixedly arranged on the outer side surface of the connecting plate (71). The other ends of the positioning plates (73) are sleeved on the outer side surface of the adjacent support rod (2) and are slidably connected to the adjacent support rod (2).

8. The on-load tap-changer lifting and inspection device for a transformer according to claim 1, wherein: The decelerating part includes a fixed frame (74). The side surface of the fixed frame (74) is fixedly connected to the positioning plate (73). A gear (75) is arranged on the inner wall of the fixed frame (74) through a bearing. A rack (76) is arranged on the other side of the gear (75). The top surface of the rack (76) is fixedly connected to the top plate (1). The gear (75) is meshed with the rack (76).

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