CN218639527U - Breaker spring dismounting device - Google Patents

Abstract

The utility model relates to a power maintenance tool technical field specifically is a circuit breaker spring dismounting device, including the transmission case, the inside of transmission case is rotated and is installed interior axle, is provided with the action wheel in the interior epaxial, and the one end of interior axle is connected with the crank, and the below of transmission case is connected with the outer tube, and the spacing groove has been seted up to the upper segment lateral wall of outer tube, and the inside of outer tube is provided with the transmission shaft. The structure is novel, the whole tool is assembled in an integrated mode, the structure is optimized, the integrity of the device is strong, and the device can be directly used without being assembled; the power source is diversified, and the motor can be used for providing power, and the manual crank can also be used for providing power; the atress board installation is convenient, and spring assembly is under the state of atress not, has 5mm clearance about between both ends circle and the circle, and the dismounting device connection piece sets to nimble mode, places the atress piece earlier in the gap before the use, then buckles the device, easy operation, simple to operate.

Description

Breaker spring dismounting device

Technical Field

The utility model relates to a power maintenance tool technical field specifically is a circuit breaker spring dismounting device.

Background

The circuit breaker is the most critical power equipment in the power system, and the reliability and stability of the circuit breaker action directly determine the safe operation of the power system. The opening and closing operations of the circuit breaker are driven by the spring operating mechanism, and the operating mechanism transmits control signals to execute related operations, so the design and manufacturing quality of the operating mechanism and the operation reliability thereof also become important factors of the reliable and safe operation of the circuit breaker. The spring operating mechanism is used as a core element of the circuit breaker and directly determines the safe operation of the power system. Once a fault occurs, the related problems of unqualified speed time, unqualified low voltage, on-off, incomplete closing, overtime energy storage and the like are easily caused. Therefore, basic overhaul operation and basic maintenance of the operating mechanism are mastered, and the method is favorable for preventing and solving accidents of the power system caused by the faults of the breaker operating mechanism. Companies find that the installation and the disassembly of the spring mechanism of the circuit breaker are very difficult in the processes of inspection, overhaul and maintenance, and generally a support (a screwdriver, an insulating plate and the like) needs to be placed in a spring gap, and then 2-3 persons cooperate to successfully disassemble and assemble the spring.

This kind of dismantlement mode exists certain potential safety hazard and not enough: firstly, a spacing piece needs to be installed to increase the stroke of the spring mechanism, and the spring mechanism can be taken out. However, the space for making the spring is limited, and the spring strength is large, so that the spring can be made by cooperation of a plurality of persons, and meanwhile, the labor time and the labor intensity are increased; moreover, the safety problem exists during installation, and due to the fact that the axial tension force of the spring is large in distance, the installed spacing pieces or wedges and the like are extruded to fly away, and personnel or surroundings are injured; moreover, when the springs are installed and uninstalled, spacers or wedges or the like need to be driven into the spring space, which may cause some additional damage to the springs. Based on the potential safety hazards and the defects, the stress characteristics and the dismounting working steps of the spring of the circuit breaker are analyzed, so that a special dismounting tool for the mechanism spring, which is safe, convenient, simple and low in manufacturing cost, is necessary to be researched.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circuit breaker spring dismounting device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a circuit breaker spring dismounting device, includes the transmission case, the inside of transmission case is rotated and is installed interior axle, interior epaxial action wheel that is provided with, the one end of interior axle is connected with the crank, the below of transmission case is connected with the outer tube, the spacing groove has been seted up to the upper segment lateral wall of outer tube, the inside of outer tube is provided with the transmission shaft, the top that the bottom surface of transmission case and transmission shaft were run through at the top of transmission shaft is provided with from the driving wheel, be provided with the atress subassembly on the hypomere of outer tube, the atress subassembly is including fixed atress subassembly and activity atress subassembly.

Preferably, the transmission shaft is rotatably installed inside the outer tube, and the side wall of the upper half section of the transmission shaft is provided with threads.

Preferably, the driven wheel is meshed with the driving wheel.

Preferably, the fixed stress assembly comprises a fixed base plate fixedly sleeved on the side wall of the bottom end of the outer pipe, and the fixed base plate is connected with a fixed stress sheet.

Preferably, the movable stress assembly comprises a movable base plate movably sleeved on the outer side of the outer tube, and the movable base plate is connected with a movable stress sheet.

Preferably, the side wall of the T-shaped nut is fixedly connected with a limiting plate, the limiting plate slides in the limiting groove, a butt joint ring is fixedly sleeved below the T-shaped nut, and the butt joint ring is fixedly embedded into the movable base plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. novel structure, dismounting device are around the design according to the rotation characteristic of T type nut, and whole instrument adopts the integral type mode equipment, and structural optimization, device wholeness is strong, need not assemble direct use, has solved the field service personnel and has kept the instrument, carry the instrument and operate the use.

2. The power source is diversified, and is limited by the space of the spring mechanism on the overhaul site, so that the power source is designed to be diversified, a motor can be used for providing power, and a manual crank can be used for providing power.

3. The stress contact area is increased, the mode of combining surfaces and the mode of combining points with surfaces are adopted according to the characteristics of the spring and the connection mode of two ends of the spring device, the stress is uniform, and the contact area is increased.

4. The stress plate is convenient to install, the spring device is in a state without stress, a gap of about 5mm is formed between the two end rings and the rings, according to the structure, the connecting piece of the dismounting device is set to be a flexible mode, the stress piece is placed in the gap before the use, and then the device is buckled, so that the dismounting device is simple to operate and convenient to install.

Drawings

FIG. 1 is a schematic view of the structure of the device of the present invention;

FIG. 2 is an internal connection diagram of the present invention;

FIG. 3 is a structural diagram of the movable force-bearing assembly of the present invention;

FIG. 4 is a connection diagram of the movable base plate and the movable stress piece of the present invention;

fig. 5 is a structural diagram of the T-shaped nut of the present invention.

In the figure: the device comprises a transmission case 1, a crank 2, an inner shaft 3, a driving wheel 4, an outer tube 5, a limiting groove 501, a transmission shaft 6, a driven wheel 7, a fixed base plate 8, a fixed stress piece 9, a movable base plate 10, a movable stress piece 11, a T-shaped nut 12, a limiting plate 1201 and a butt joint ring 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: a breaker spring dismounting device comprises a transmission case 1, wherein an inner shaft 3 is rotatably arranged in the transmission case 1, a driving wheel 4 is arranged on the inner shaft 3, one end of the inner shaft 3 is connected with a crank 2, an outer pipe 5 is connected below the transmission case 1, the dismounting device is made of 304 stainless steel, the wall thickness is 3mm, and the dismounting device can bear the knocking of a hammer; spacing groove 501 has been seted up to the upper segment lateral wall of outer tube 5, the inside of outer tube 5 is provided with transmission shaft 6, transmission shaft 6 rotates and installs in the inside at outer tube 5, the upper end of transmission shaft 6 is passed through the bearing and is installed on 1 bottom surface of transmission case, the bottom of transmission shaft 6 is passed through the bearing and is installed in outer tube 5 bottom, set up screw thread on the first segment lateral wall of transmission shaft 6, the top of transmission shaft 6 runs through the bottom surface of transmission case 1 and the top of transmission shaft 6 is provided with from driving wheel 7, from driving wheel 7 and the meshing of action wheel 4 connection.

The lower section of the outer pipe 5 is provided with a stress assembly which comprises a fixed stress assembly and a movable stress assembly. The fixed stress assembly comprises a fixed base plate 8 fixedly sleeved on the side wall of the bottom end of the outer tube 5, the fixed base plate 8 is connected with a fixed stress sheet 9, and the fixed base plate 8 and the fixed stress sheet 9 are mutually clamped and fixedly connected through screws; the movable stress assembly comprises a movable base plate 10 movably sleeved on the outer side of the outer pipe 5, the movable base plate 10 is connected with a movable stress piece 11, a T-shaped nut 12 is arranged in the movable base plate 10, the T-shaped nut 12 is sleeved on the transmission shaft 6 and is in fit connection with the transmission shaft 6 through internal and external threads, the T-shaped nut 12 can move up and down when the transmission shaft 6 rotates, a limiting plate 1201 is fixedly connected to the side wall of the T-shaped nut 12, the limiting plate 1201 slides in the limiting groove 501 to play a limiting role, a butt joint ring 13 is fixedly sleeved below the T-shaped nut 12, and the butt joint ring 13 is fixedly embedded in the movable base plate 10.

When the spring is installed or disassembled, the fixed stress piece 9 and the movable stress piece 11 are inserted into the space of the spring, the driving wheel 4 is driven to rotate by rotating the crank 2, the driving wheel 4 and the driven wheel 7 are meshed to drive the transmission shaft 6 to rotate, the upper end of the transmission shaft 6 and the T-shaped nut 12 are connected in a threaded fit mode, the T-shaped nut 12 can drive the movable base plate 10, the movable stress piece 11 moves up and down, the distance between the movable stress piece 11 and the fixed stress piece 9 is adjusted, and therefore the space piece or the wedge and other objects which are installed in the spring are not needed when the spring is installed or disassembled, and the spring is more practical and safe.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a circuit breaker spring dismounting device, includes transmission case (1), its characterized in that: the inner shaft (3) is rotatably arranged inside the transmission case (1), a driving wheel (4) is arranged on the inner shaft (3), a crank (2) is connected to one end of the inner shaft (3), an outer tube (5) is connected to the lower portion of the transmission case (1), a limiting groove (501) is formed in the side wall of the upper section of the outer tube (5), a transmission shaft (6) is arranged inside the outer tube (5), the top of the transmission shaft (6) penetrates through the bottom surface of the transmission case (1) and the top of the transmission shaft (6) is provided with a driven wheel (7), a stress assembly is arranged on the lower section of the outer tube (5), and the stress assembly comprises a fixed stress assembly and a movable stress assembly.

2. A circuit breaker spring release apparatus as defined in claim 1, wherein: the transmission shaft (6) is rotatably arranged inside the outer pipe (5), and the side wall of the upper half section of the transmission shaft (6) is provided with threads.

3. A circuit breaker spring release apparatus as defined in claim 1, wherein: the driven wheel (7) is meshed with the driving wheel (4).

4. A circuit breaker spring release apparatus as defined in claim 1, wherein: the fixed stress assembly comprises a fixed base plate (8) which is fixedly sleeved on the side wall of the bottom end of the outer pipe (5), and the fixed base plate (8) is connected with a fixed stress sheet (9).

5. A circuit breaker spring release apparatus as defined in claim 1, wherein: the movable stress assembly comprises a movable base plate (10) movably sleeved on the outer side of the outer pipe (5), the movable base plate (10) is connected with a movable stress sheet (11), a T-shaped nut (12) is arranged in the movable base plate (10), and the T-shaped nut (12) is sleeved on the transmission shaft (6) and is in fit connection with the transmission shaft (6) through internal and external threads.

6. A circuit breaker spring removal assembly as claimed in claim 5, wherein: the limiting plate (1201) is fixedly connected to the side wall of the T-shaped nut (12), the limiting plate (1201) slides in the limiting groove (501), the butt joint ring (13) is fixedly sleeved below the T-shaped nut (12), and the butt joint ring (13) is fixedly embedded into the movable base plate (10).

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