Generator outlet breaker maintenance hoist

Abstract

The utility model discloses a generator outlet circuit breaker overhauls lifting appliance, including the casing, the casing inside rotationally connected have positive and negative screw rod, the positive and negative screw rod surface thread has two groups of moving plate, and moving plate and casing inner wall are slidably connected and are set, the moving plate one end bolt connection has the clamping plate, clamping plate one side both ends all weld and have the receiving shell, the receiving shell inside bolt connection has three groups of spring top rod, three groups spring top rod piston end common bolt connection has the inclined block, the inclined block one side weld has a plurality of groups of clamping plate, apply in circuit breaker overhauls technical field, the utility model discloses when the position of mounting plate moves and clamping plate is close, and mounting plate will remove the obstruction to the inclined block, and spring top rod will push the inclined block and clamping plate and move reset like this, and clamping plate will be clamped in the card slot inside like this, and the installation fixed of mounting plate will be completed like this.

Description

Technical Field

[0001] This utility model belongs to the field of circuit breaker maintenance technology, and specifically relates to a hoisting tool for maintenance of generator outlet circuit breakers. Background Technology

[0002] The generator output circuit breaker is a core switching device connecting the generator and the power grid. It is mainly used to control and protect the generator and related power systems. Its core functions are threefold: 1. Normal operation: enabling the generator to connect to and disconnect from the grid, meeting the needs of unit start-up and shutdown and grid dispatching; 2. Fault protection: quickly cutting off the current when a short circuit or overcurrent fault occurs on the generator or output side, preventing the fault from escalating and damaging the equipment; 3. Safety isolation: isolating the power supply during unit maintenance to ensure the safety of personnel and equipment. This equipment must have high rated current, short breaking current capability, and the ability to withstand special electrical stresses at the generator output end. It usually adopts SF6 gas insulation or vacuum insulation technology and is widely used in thermal power units, hydropower units, and new energy power plants.

[0003] Traditional lifting devices do not have a buffer structure at the clamping part. The clamping structure is usually directly clamped and fixed to the surface of the circuit breaker. Because the clamping force required is large, wear marks are easily seen on the surface of the circuit breaker and the lifting device. Utility Model Content

[0004] The purpose of this utility model is to provide a lifting tool for the maintenance of generator outlet circuit breakers, which has the advantage of preventing wear marks caused by clamping from appearing on the surface of the lifting tool and the circuit breaker.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a generator outlet circuit breaker maintenance hoist, comprising a housing, wherein a positive and negative lead screw is rotatably connected inside the housing, and two sets of moving plates are threadedly connected to the surface of the positive and negative lead screw, and the moving plates are slidably connected to the inner wall of the housing, a clamping plate is bolted to one end of the moving plate, and a receiving shell is welded to both ends of one side of the clamping plate, and three sets of spring push rods are bolted inside the receiving shell, the piston ends of the three sets of spring push rods are bolted to a wedge block, and several sets of clamping plates are welded to one side of the wedge block.

[0006] Using the above technical solution: when the mounting plate moves to a position close to the clamping plate, the mounting plate will release its obstruction of the inclined block. In this way, the spring push rod will push the inclined block and the clamping plate to move back. When clamping the circuit breaker, rotating the positive and negative screws will drive the two sets of moving plates to move synchronously in opposite directions. The movement of the moving plates will drive the clamping plate and related structures on the surface of the clamping plate to clamp and fix the circuit breaker.

[0007] The present invention is further configured such that an installation plate is detachably connected inside the clamping plate, and several sets of slots are provided inside both ends of the installation plate, and the slots and the clamping plate are detachably connected.

[0008] Using the above technical solution: when the mounting plate moves to a position that is close to the clamping plate, the mounting plate will release its obstruction to the inclined block. In this way, the spring push rod will push the inclined block and the clamping plate to move and reset, so that the clamping plate will be engaged in the groove, thus completing the installation and fixing of the mounting plate.

[0009] The present invention is further configured such that a connecting shell is welded to one side of the clamping plate, and the connecting shell and the mounting plate are connected by a screw thread.

[0010] Using the above technical solution: when the mounting plate is installed inside the clamping plate, during the installation process, the upper and lower sides of the mounting plate will simultaneously squeeze the inclined surfaces of the two sets of mounting plates.

[0011] The present invention is further configured such that a rotating shaft is fixedly connected to one end of the screw, and a push plate is rotatably connected to one side of the rotating shaft.

[0012] Using the above technical solution: the screw will drive the rotating shaft to rotate on the surface of the push plate. During the rotation of the screw, the screw will move forward, thus driving the push plate to move forward.

[0013] The present invention is further configured such that the push plate is slidably connected to the inner wall of the connecting shell, and a buffer pad is detachably connected inside the connecting shell.

[0014] By adopting the above technical solution, the push plate will push the buffer pad recessed inside the connecting shell outward, so that the buffer pad is pushed outward to the position beyond the fixing plate. In this way, the buffering effect can be realized again when the circuit breaker is clamped and fixed, and the service life of the buffer pad is improved.

[0015] The present invention is further configured such that screws are threadedly connected to both ends of one side of the connecting shell, and the screws and the buffer pad are detachably connected; and fixing plates are welded to both ends of one side of the clamping plate.

[0016] Using the above technical solution: when it is necessary to replace the unusable buffer pad, the screws used to hold the four corners of the buffer pad can be rotated to release the screws from the buffer pad, so that the buffer pad can be removed from the inside of the connecting shell.

[0017] In summary, this utility model has the following beneficial effects: 1. The design of the spring push rod, wedge block and clamping plate can quickly fix the mounting plate, so that it can be quickly disassembled when maintaining or replacing the mounting plate and other related structures; 2. The design of the buffer pad, push plate, and screw can effectively protect the circuit breaker and the lifting device, preventing wear. The screw and push plate also allow the buffer pad to be used multiple times, improving efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic perspective view of the clamping plate structure of this utility model; Figure 3 This is a three-dimensional schematic diagram of the mounting plate structure of this utility model; Figure 4 This is a schematic perspective view of the buffer pad structure of this utility model; Figure 5 This is a schematic perspective view of the connecting shell structure of this utility model; Figure 6 This is a schematic three-dimensional view of the inclined block structure of this utility model.

[0019] Reference numerals: 1. Housing; 2. Positive and negative lead screws; 3. Moving plate; 4. Clamping plate; 501. Storage shell; 502. Spring push rod; 503. Inclined block; 504. Clamping plate; 505. Mounting plate; 506. Slot; 507. Screw; 508. Fixing plate; 509. Connecting shell; 510. Push plate; 511. Rotating shaft; 512. Buffer pad; 513. Screw. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Example 1: refer to Figure 1 , Figure 2 , Figure 6 A generator outlet circuit breaker maintenance hoist includes a housing 1. Inside the housing 1, a positive and negative lead screw 2 is rotatably connected. Two sets of moving plates 3 are threadedly connected to the surface of the positive and negative lead screw 2, and the moving plates 3 are slidably connected to the inner wall of the housing 1. One end of the moving plate 3 is bolted to a clamping plate 4. Both ends of one side of the clamping plate 4 are welded with a receiving shell 501. Inside the receiving shell 501, three sets of spring push rods 502 are bolted. The piston ends of the three sets of spring push rods 502 are bolted to a wedge block 503. Several sets of clamping plates 504 are welded to one side of the wedge block 503. Through the setting of the clamping plates 504 and the wedge block 503, the mounting plate 505 can be limited and fixed. refer to Figure 2 , Figure 3 , Figure 6The clamping plate 4 is detachably connected to the mounting plate 505. Several sets of slots 506 are opened inside both ends of the mounting plate 505. The slots 506 and the clamping plate 504 are detachably connected. The slots 506 can be engaged and limited with the clamping plate 504.

[0022] Brief description of the usage process: When the mounting plate 505 is installed inside the clamping plate 4, during the installation process, the upper and lower sides of the mounting plate 505 simultaneously press against the inclined surfaces of the two sets of mounting plates 505. Because the inclined surfaces are relatively smooth, when the inclined surfaces are pressed, the inclined block 503 will drive the clamping plate 504 to move into the housing 501. During the movement, the piston end of the spring rod 502 will also be compressed. When the mounting plate 505 moves to a position that is close to the clamping plate 4, the mounting plate 505 will release the pressure on the inclined block 505. The obstruction of 3 causes the spring push rod 502 to push the inclined block 503 and the clamping plate 504 to move and reset, thus causing the clamping plate 504 to engage inside the clamping slot 506. This completes the installation and fixation of the mounting plate 505, allowing for quick disassembly and assembly when the clamping buffer structure needs maintenance. When clamping the circuit breaker, rotating the positive and negative screws 2 will cause the two sets of moving plates 3 to move synchronously in opposite directions. The movement of the moving plates 3 will cause the clamping plate 4 and the related structures on the surface of the clamping plate 4 to clamp and fix the circuit breaker.

[0023] Example 2: refer to Figure 2 , Figure 3 , Figure 5 A connecting shell 509 is welded to one side of the clamping plate 4. The connecting shell 509 and the mounting plate 505 are connected by a screw 507 through a common thread. The connecting shell 509 is designed for the installation of the buffer pad 512.

[0024] refer to Figure 4 One end of the screw 507 is fixedly connected to a rotating shaft 511, and a push plate 510 is rotatably connected to one side of the rotating shaft 511. The push plate 510 is used to push the buffer pad 512 to move.

[0025] refer to Figure 4-5 The push plate 510 is slidably connected to the inner wall of the connecting shell 509. A buffer pad 512 is detachably connected inside the connecting shell 509. The buffer pad 512 is used to buffer the clamping part and prevent wear.

[0026] refer to Figure 2 , Figure 4 and Figure 5 Both ends of one side of the connecting shell 509 are threaded with screws 513, and the screws 513 and the buffer pad 512 are detachably connected. Both ends of one side of the clamping plate 4 are welded with fixing plates 508, and the screws 513 are used to fix the buffer pad 512 inside the connecting shell 509.

[0027] Brief description of the usage process: When clamping the circuit breaker, the clamping plate 4 will cause the buffer pad 512 to first contact and clamp the circuit breaker. During the compression process, the buffer pad 512 will deform and compress. When compressed to a certain extent, it will cause the fixing plate 508 to contact and clamp the circuit breaker. This not only completes the clamping and fixing of the circuit breaker but also prevents wear on the clamping plate 4 and mounting plate 505 during clamping. However, with prolonged use, the buffer pad 512 may become compressed and deformed, making it difficult to recover. This can cause the buffer pad 512 to become recessed inside the connecting shell 509. In this case, simply having two sets of fixing plates 508 clamping the circuit breaker surface is insufficient for the buffering effect during clamping and fixing. Therefore, the screw 507 can be rotated, which will drive... The rotating shaft 511 rotates on the surface of the push plate 510. During the rotation of the screw 507, the screw 507 moves forward, which in turn drives the push plate 510 forward. The push plate 510 then pushes the buffer pad 512, which is recessed inside the connecting housing 509, outward, so that the buffer pad 512 is pushed past the fixing plate 508. This allows the buffering effect to be achieved again when clamping and fixing the circuit breaker, improving the service life of the buffer pad 512. When it is necessary to replace the unusable buffer pad 512, the screws 513 used to clamp the four corners of the buffer pad 512 can be rotated to disengage the screws from the buffer pad 512, allowing the buffer pad 512 to be removed from inside the connecting housing 509.

[0028] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A maintenance lifting tool for a generator outlet circuit breaker, comprising a housing (1), characterized in that: The housing (1) is rotatably connected to a positive and negative lead screw (2). The positive and negative lead screw (2) is threadedly connected to a moving plate (3), and the moving plate (3) is slidably connected to the inner wall of the housing (1). One end of the moving plate (3) is bolted to a clamping plate (4). Both ends of one side of the clamping plate (4) are welded to a storage shell (501). The storage shell (501) is bolted to a spring top rod (502). The piston end of the spring top rod (502) is bolted to a wedge block (503). One side of the wedge block (503) is welded to a clamping plate (504).

2. The generator outlet circuit breaker maintenance lifting tool according to claim 1, characterized in that: The clamping plate (4) is detachably connected to an installation plate (505). The installation plate (505) has slots (506) at both ends, and the slots (506) and the plate (504) are detachably connected.

3. The generator outlet circuit breaker maintenance lifting tool according to claim 2, characterized in that: A connecting shell (509) is welded to one side of the clamping plate (4), and the connecting shell (509) and the mounting plate (505) are connected by a screw (507) through a common thread.

4. The generator outlet circuit breaker maintenance lifting tool according to claim 3, characterized in that: One end of the screw (507) is fixedly connected to a rotating shaft (511), and a push plate (510) is rotatably connected to one side of the rotating shaft (511).

5. The generator outlet circuit breaker maintenance lifting tool according to claim 4, characterized in that: The push plate (510) is slidably connected to the inner wall of the connecting shell (509), and a buffer pad (512) is detachably connected inside the connecting shell (509).

6. The generator outlet circuit breaker maintenance lifting tool according to claim 5, characterized in that: The connecting shell (509) has screws (513) threaded inside both ends on one side, and the screws (513) and the buffer pad (512) are detachably connected. The clamping plate (4) has fixing plates (508) welded to both ends on one side.

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