CN216288272U

CN216288272U - Spring-hanging crank arm structure of spring operating mechanism

Info

Publication number: CN216288272U
Application number: CN202122968628.9U
Authority: CN
Inventors: 郑慧明; 夏会法; 郑晓澜
Original assignee: Best Electric Jiangshan Co ltd
Current assignee: Best Electric Jiangshan Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-04-12
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a spring-hanging crank arm structure of a spring operating mechanism, belonging to the technical field of high-voltage electrical appliances, which comprises an energy storage shaft, wherein two ends of the energy storage shaft are respectively provided with a spring hanging crank arm, the spring hanging crank arm is provided with an insertion hole for inserting the energy storage shaft, a flange outer ring roller bearing is arranged outside the spring hanging crank arm, a flat key is arranged in the spring hanging crank arm, the flat key extends from the hanging spring crank arm to the flange outer ring roller bearing, the ratio of the length L of the side wall of the hanging spring crank arm to the diameter D of the jack is more than 1.15, the length of the hanging spring crank arm in the X-axis direction matched with the energy storage shaft is lengthened, the ratio of the length L of the side wall of the hanging spring crank arm to the diameter D of the jack is more than 1.15, meanwhile, the flat key is lengthened, the positioning between the spring hanging crank arm and the energy storage shaft is enhanced, the degree of freedom of Z-axis rotation is reliably positioned, and meanwhile, the roller bearing of the outer ring of the flange is fixed on the lengthened excircle of the spring hanging crank arm, so that the use is convenient.

Description

Spring-hanging crank arm structure of spring operating mechanism

Technical Field

The utility model belongs to the technical field of high-voltage electric appliances, and particularly relates to a spring hanging crank arm structure of a spring operating mechanism.

Background

Because the energy storage transmission of the closing spring of the common spring operating mechanism is that the energy storage shaft rotates, the spring hanging crank arm assembled on the energy storage shaft is driven to rotate, and then the closing spring is stretched or compressed to store energy; hang spring turning arm and pass through the key-type connection assembly on the energy storage axle, the energy storage axle passes through the bearing to be supported on the mechanism curb plate, and there is following defect in this kind of design:

1. in order to ensure that the spring operating mechanism has stable performance and long service life and meets the requirements of actions and characteristics of a circuit breaker, the spring-hanging crank arm is fixed relative to the energy storage shaft, namely 6 degrees of freedom of movement and rotation along the directions of an X axis, a Y axis and a Z axis are positioned, the practical design is limited by the structure and the space, the ratio of the axial length L to the diameter D of the traditional spring-hanging crank arm is smaller and is usually only about 0.6-0.7, as shown in figure 1, the spring-hanging crank arm structure in the prior art is provided, the positioning tends to cause the positioning of the degree of freedom of rotation in the direction of the Z axis to be unreliable, the closing spring force gives the spring-hanging crank arm a torque of rotation in the direction of the Z axis, under the action of the torque, the fit clearance between the spring-hanging crank arm and the spring-hanging shaft is larger and larger along with the increase of the action times of the mechanism, even the spring-hanging crank arm deforms, inclines, the closing work of the mechanism is reduced, the mechanical characteristics of the circuit breaker are changed, and meanwhile, the spring-hanging crank arm is inclined, so that the stress direction of other transmission parts is changed, the abrasion is increased, the reliability of the energy storage and closing actions of the mechanism is influenced in serious cases, and the mechanical service life of the mechanism is influenced;

2. also some designs, in order to overcome above-mentioned defect, directly make spring turning arm and energy storage axle as an organic whole, the part machining of this kind of design is poor with inspection manufacturability, and the part qualification rate reduces, influences the reliability of mechanism to when spring mechanism needs both sides to hang the spring, this design can not satisfy the requirement. Therefore, it is necessary to provide a spring-engaging crank arm structure of a spring operating mechanism.

Disclosure of Invention

Aiming at the problems that the positioning of the rotational freedom degree of the existing hanging spring crank arm in the Z-axis direction is not reliable, and the hanging spring crank arm is easy to deform and incline to influence the reliability of energy storage and switching-on when the hanging spring crank arm is used for a long time, the hanging spring crank arm structure of the spring operating mechanism is provided, the length of the hanging spring crank arm in the X-axis direction matched with an energy storage shaft is lengthened, the ratio of the length L of the side wall of the hanging spring crank arm to the diameter D of a jack is more than 1.15, a flat key is lengthened, the positioning between the hanging spring crank arm and the energy storage shaft is enhanced, the rotational freedom degree of the Z axis is reliably positioned, and a flange outer ring roller bearing is fixed on the lengthened excircle of the hanging spring crank arm, so that the hanging spring crank arm structure is convenient to use.

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a string spring turning arm structure of spring operating mechanism, includes the energy storage axle, the energy storage axle both ends are furnished with respectively and are hung the spring turning arm, and it has the jack that supplies the energy storage axle to insert to open on this string spring turning arm, hang the spring turning arm and be equipped with flange outer lane roller bearing outward, be equipped with the parallel key in the string spring turning arm, this parallel key extends to flange outer lane roller bearing from hanging the spring turning arm, it is more than 1.15 to hang the long L of spring turning arm lateral wall and jack diameter D ratio.

Preferably, an installation part is arranged on one side of the spring hanging crank arm, a second fixed block is connected to the installation part, and a closing spring is fixed to the second fixed block.

Preferably, one end of the closing spring is fixed to the second fixed block, the other end of the closing spring is fixed to the first fixed block, and the first fixed block is fixedly connected to the carrier.

Preferably, hang spring turning arm one side and extend and be provided with the excircle, flange outer lane roller bearing sets up on this excircle.

Advantageous effects

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

according to the utility model, the length of the spring crank arm matched with the energy storage shaft in the X-axis direction is lengthened, the ratio of the length L of the side wall of the spring crank arm to the diameter D of the jack is more than 1.15, the flat key is lengthened, the positioning between the spring crank arm and the energy storage shaft is enhanced, the degree of freedom of Z-axis rotation is reliably positioned, and meanwhile, the flange outer ring roller bearing is fixed on the lengthened excircle of the spring crank arm, so that the use is convenient.

Drawings

Fig. 1 is a schematic view of the whole structure of a spring-hanging crank arm structure in the prior art.

Fig. 2 is a schematic overall structure diagram of a spring-engaging crank arm structure of a spring operating mechanism.

Fig. 3 is a schematic view of a mounting plate structure of a spring-engaging crank arm structure of a spring operating mechanism.

The corresponding relationship between the reference numbers of the figures and the names of the components in the figures is as follows:

1. a closing spring; 2. a flat bond; 3. an energy storage shaft; 4. a spring hanging crank arm; 4.1, mounting part; 5. a flange outer ring roller bearing; 6. a carrier; 7. a first fixed block; 8. and a second fixed block.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, which is a schematic structural diagram of a spring crank arm structure of a spring operating mechanism according to a preferred embodiment of the present invention, in this embodiment, the spring crank arm structure includes an energy storage shaft 3, two ends of the energy storage shaft 3 are respectively provided with a spring crank arm 4, the spring crank arm 4 is provided with a jack into which the energy storage shaft 3 is inserted, a flange outer race roller bearing 5 is provided outside the spring crank arm 4, a flat key 2 is provided inside the spring crank arm 4, the flat key 2 extends from the spring crank arm 4 to the flange outer race roller bearing 5, a ratio of a length L of a side wall of the spring crank arm 4 to a diameter D of the jack is greater than 1.15, a ratio of the length of the side wall of the spring crank arm 4 to the jack is greater than 1.15, and the flat key 2 extends from the spring crank arm 4 to the flange outer race roller bearing 5, so that a degree of freedom of rotation in a Z-axis direction is reliably positioned.

In this embodiment, a mounting portion 4.1 is arranged on one side of the hanging spring crank arm 4, a second fixing block 8 is connected to the mounting portion 4.1, a closing spring 1 is fixed to the second fixing block 8, the second fixing block 8 is sleeved and fixed to the mounting portion 4.1, and one end of the closing spring 1 is wound and fixed to the second fixing block 8.

In this embodiment, one end of the closing spring 1 is fixed to the second fixing block 8, the other end of the closing spring is fixed to the first fixing block 7, the first fixing block 7 is fixedly connected to the carrier 6, the first fixing block 7 is fixed to the carrier 6, and the other end of the closing spring 1 is wound and fixed to the first fixing block 7.

In this embodiment, hang spring turning arm 4 one side and extend and be provided with the excircle, flange outer lane roller bearing 5 sets up on this excircle, has lengthened the length of hanging spring turning arm 4X direction, makes the rotatory degree of automation of Z axle direction obtain reliable positioning, has further promoted this stability of hanging spring turning arm 4, has improved the reliability of energy storage and combined floodgate.

While the utility model has been described in further detail in connection with specific embodiments thereof, it will be understood that the utility model is not limited thereto, and that various other modifications and substitutions may be made by those skilled in the art without departing from the spirit of the utility model, which should be considered to be within the scope of the utility model as defined by the appended claims.

Claims

1. A spring hanging crank arm structure of a spring operating mechanism,

the method is characterized in that:

including energy storage axle (3), energy storage axle (3) both ends are furnished with respectively and are hung spring turning arm (4), and it has the jack that supplies energy storage axle (3) to insert to open on this string spring turning arm (4), hang spring turning arm (4) and be equipped with flange outer lane roller bearing (5) outward, be equipped with parallel key (2) in string spring turning arm (4), this parallel key (2) extend to flange outer lane roller bearing (5) from string spring turning arm (4), it is more than 1.15 to hang long L of spring turning arm (4) lateral wall and jack diameter D ratio.

2. The spring arm structure of a spring actuator of claim 1, wherein: hang spring turning arm (4) one side and be equipped with installation department (4.1), be connected with second fixed block (8) on this installation department (4.1), be fixed with closing spring (1) on this second fixed block (8).

3. The spring arm structure of a spring actuator of claim 2, wherein: one end of the closing spring (1) is fixed on the second fixing block (8), the other end of the closing spring is fixed on the first fixing block (7), and the first fixing block (7) is fixedly connected to the carrier (6).

4. The spring arm structure of a spring actuator of claim 1, wherein: hang spring turning arm (4) one side and extend and be provided with the excircle, flange outer lane roller bearing (5) set up on this excircle.