CN217641021U

CN217641021U - Spring stretching device

Info

Publication number: CN217641021U
Application number: CN202221643432.0U
Authority: CN
Inventors: 张福康; 王爱娜; 俞洋; 张圣涛; 莫帆帆; 台启春
Original assignee: JIANGSU DAQO HIGH VOLTAGE SWITCHGEAR CO Ltd
Current assignee: JIANGSU DAQO HIGH VOLTAGE SWITCHGEAR CO Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-10-21
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a spring stretching device, including the base, the equal fixed mounting in top four corners department of base has the support column, and the top fixed mounting of support column has the roof, and the top fixed mounting of roof has the cylinder, and the push rod of cylinder slides and runs through the roof and connect the link plate, and the link plate is installed down through the bolt in the top of base, goes up the link plate and all installs the bolt between the inner wall of link plate down, and movable mounting has spring unit between two bolts, the last movable inserted sheet of pegging graft of spring unit. Run through link plate and lower link plate respectively with the bolt, pass the spring unit both ends simultaneously, link plate removal in the cylinder pulling, thereby make the link plate keep away from lower link plate, bolt pulling spring unit extends, after spring unit's helical gap increase, all insert the inserted sheet in every helical gap with spring unit, then the cylinder drives upper link plate and moves down, the inserted sheet is pressed from both sides in spring unit, make spring unit keep tensile state, accomplish spring unit's energy storage promptly after taking off the bolt.

Description

Spring stretching device

Technical Field

The utility model relates to an electrical equipment-medium voltage switch technical field specifically is a spring stretching device.

Background

In a medium-high voltage circuit breaker, the circuit breaker needs to be switched on by means of elastic potential energy stored by an energy storage spring in an operating mechanism, the energy storage spring needs to have very large elastic force to ensure that the switching-on time is within a reliable range, and the initial state of the energy storage spring assembled to the operating mechanism is also in a stretching state. The coils of the energy storage spring are tightly combined, and the energy storage spring needs to be stretched to a certain length in order to be conveniently assembled in the operating mechanism.

In the prior art, a manual tool is generally used for stretching a spring, the energy storage spring needs to be stretched by about 30mm to be assembled in an operating mechanism according to the assembly process requirement, the pretension force is more than 1000N, the manual tool is not practical to stretch the spring during the production of products, and the inventor provides a spring stretching device for solving the problems.

As shown in figure 1, in the scheme, one end of the energy storage spring is fixed on the screw rod, the other end of the energy storage spring is fixed on the handle, and the handle is pulled by manpower, so that the spring is stretched. In the process of spring stretching, the spring is easy to trip and jump out, and personal injury is caused.

As shown in fig. 2, in this solution, the energy storage spring is fixed in the bracket, and the hexagonal rod portions of the support rods on both sides are rotated by a wrench to lengthen the total length of the support rods, and then the spring is indirectly extended. In the scheme shown in fig. 2, a process hole needs to be formed in the hanging plate on two sides of the spring, so that the manufacturing cost of parts is increased.

SUMMERY OF THE UTILITY MODEL

The problem that a spring is unrealistic to be stretched only by manually driving a tool during production of a product is solved; an object of the utility model is to provide a spring stretching device.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a spring stretching device, includes the base, the equal fixed mounting in top four corners department of base has the support column, the top fixed mounting of support column has the roof, the top fixed mounting of roof has the cylinder, the push rod of cylinder slides and runs through the roof and connect the link plate, the link plate is installed down through the bolt in the top of base, go up the link plate and all install the bolt, two between the inner wall of link plate and lower link plate movable mounting has spring assembly, the last movable grafting inserted sheet of activity of spring assembly, spring assembly includes the spring body, the equal fixed mounting in both ends of spring body has the spring link plate, and two spring link plates move about respectively to cup joint on two inserted pins, the inserted sheet activity joint is in the helical gap of spring body, it has waist type hole all to open on the both sides curb plate of link plate and lower link plate, the bolt slides and runs through waist type hole, the both sides outer wall in waist type hole has all opened the locking groove, the locking groove internalization has the grafting to keep off the card.

Preferably, the upper hanging plate and the lower hanging plate are of U-shaped structures, and the open ends of the upper hanging plate and the lower hanging plate are opposite to each other.

Preferably, the inserted sheet is isosceles trapezoid structure, and two waist limits of inserted sheet department all opens and have a plurality of recesses, the recess is the arc structure, the inserted sheet has a plurality ofly along the axis symmetric distribution of spring body.

Preferably, the distance between the two locking grooves is equal to the distance between the outer walls of the upper hanging plate and the lower hanging plate, the width of the blocking clamp is larger than that of the waist-shaped hole, the blocking clamp is provided with a clamping groove, the clamping groove is of a C-shaped structure, and the clamping groove is matched with the locking grooves.

Has the beneficial effects that:

1. the bolt penetrates through waist-shaped holes in the upper hanging plate and the lower hanging plate respectively and penetrates through the spring hanging plates on two sides of the spring body simultaneously, then the stop clamp is clamped in the stop groove, the bolt is kept fixed, the upper hanging plate is pulled to move through the air cylinder, so that the upper hanging plate is far away from the lower hanging plate, the bolt pulls the spring body to extend, after the spiral gaps of the spring body are increased, an insert piece is inserted into each spiral gap of the spring body, then the air cylinder drives the upper hanging plate to move downwards, the insert pieces are clamped in the spring body, so that the spring body is kept in a stretching state, energy storage of the spring body is completed after the bolt is taken down, the spring assembly with the insert pieces mounted is mounted in the operating mechanism, manual or electric energy storage is performed through the operating mechanism, the spring body is stretched again, the insert pieces can be taken down at the moment, assembly of the energy storage spring is completed, and the use is convenient;

2. the device is safe and reliable, and the spring cannot be tripped and bounce out when stretched, so that personnel and equipment are damaged;

3. the device is time-saving and labor-saving, does not need to manually stretch the spring, and is convenient to assemble and take down.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a prior art spring tensioner

FIG. 2 is a prior art spring extension device

Fig. 3 is a schematic structural view of the present invention.

Fig. 4 is a schematic view of the local structure at the latch of the present invention.

Fig. 5 is a schematic view of the structure of the insert of the present invention.

In the figure: 1. a base; 2. a support column; 3. a top plate; 4. a cylinder; 5. hanging the plate; 6. hanging the plate; 7. a bolt; 8. a spring assembly; 81. a spring body; 82. a spring hanging plate; 9. inserting sheets; 91. a groove; 10. a stopper groove; 11. blocking the card; 12. a card slot; 13. a kidney-shaped hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 efforts all belong to the protection scope of the present invention.

As shown in fig. 3-5, the utility model provides a spring stretching device, including base 1, the equal fixed mounting in top four corners department of base 1 has support column 2, the top fixed mounting of support column 2 has roof 3, the top fixed mounting of roof 3 has cylinder 4, the push rod of cylinder 4 slides and runs through roof 3 and connects link plate 5, link plate 6 down is installed through the bolt in base 1's top, all install bolt 7 between the inner wall of going up link plate 5 and link plate 6 down, movable mounting has spring assembly 8 between two bolts 7, movable grafting inserted sheet 9 on the spring assembly 8, spring assembly 8 includes spring body 81, the equal fixed mounting in both ends of spring body 81 has spring link plate 82, two spring 82 respectively the activity cup joint on two bolts 7, inserted sheet 9 movable joint is in spring body 81's helical gap, waist type hole 13 has all been opened on the both sides curb plate of going up link plate 5 and link plate 6 down, bolt 7 slides and runs through waist type hole 13, waist type hole 10 has all opened the both sides outer wall of waist type hole 13, movable joint has fender card 11 in the locking groove 10.

Through the technical scheme, the bolt 7 penetrates through the waist-shaped holes 13 in the upper hanging plate 5 and the lower hanging plate 6 respectively, the bolt penetrates through the spring hanging plates 82 on two sides of the spring body 81 simultaneously, then the stop catch 11 is clamped into the stop groove 10, the bolt 7 is enabled to be fixed, the bolt 5 is pulled through the cylinder 4 to move, the upper hanging plate 5 is enabled to be far away from the lower hanging plate 6, the bolt 7 pulls the spring body 81 to stretch, after the spiral gaps of the spring body 81 are increased, the insertion piece 9 is inserted into each spiral gap of the spring body 81, then the cylinder 4 drives the upper hanging plate 5 to move downwards, the insertion piece 9 is clamped in the spring body 81, the spring body 81 is enabled to be kept in a stretching state, the bolt 7 is taken down to store energy of the spring body 81, the spring assembly 8 with the insertion piece 9 installed in the operating mechanism, manual or electric energy storage is carried out through the operating mechanism, the spring body 81 is stretched again, the insertion piece 9 can be taken down at this moment, and assembly of the energy storage spring is completed.

Further, the upper hanging plate 5 and the lower hanging plate 6 are both of a U-shaped structure, and the opening ends of the upper hanging plate 5 and the lower hanging plate 6 are opposite to each other.

Through above-mentioned technical scheme, can protect spring link plate 82 through last link plate 5 and lower link plate 6 of U type structure, avoid spring link plate 82 pine to take off.

Further, inserted sheet 9 is the isosceles trapezoid structure, and two waist limits department of inserted sheet 9 all opens and have a plurality of recesses 91, and recess 91 is the arc structure, and inserted sheet 9 has a plurality ofly along the axis symmetric distribution of spring body 81.

Through the technical scheme, the inserting sheet 9 of the isosceles trapezoid structure can stretch different excess lengths of the spring body 81 according to energy storage requirements, and the grooves 91 at different positions on the inserting sheet 9 are inserted into the spiral space of the spring body 81, so that different energy storage requirements are limited.

Furthermore, the distance between the two locking grooves 10 is equal to the distance between the outer walls of the upper hanging plate 5 and the lower hanging plate 6, the width of the blocking clamp 11 is larger than that of the waist-shaped hole 13, a clamping groove 12 is formed in the blocking clamp 11, the clamping groove 12 is of a C-shaped structure, and the clamping groove 12 is matched with the locking grooves 10.

Through above-mentioned technical scheme, keep off card 11 and pass through behind the 12 joint locking grooves 10 of draw-in groove, can carry on spacingly to bolt 7, make it can't break away from link plate 5 and link plate 6 down, after the energy storage, will keep off card 11 and pull out, can pull bolt 7 from link plate 5 and link plate 6 down to loosen spring link plate 82, it is convenient to use.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A spring stretching device comprises a base (1), and is characterized in that: the four corners department of base (1) is provided with support column (2), the top of support column (2) is provided with roof (3), the top of roof (3) is provided with cylinder (4), the push rod of cylinder (4) slides and runs through roof (3) and connects link plate (5), the top of base (1) is provided with down link plate (6), it is provided with bolt (7) with lower link plate (6) to go up link plate (5), two movable mounting has spring assembly (8) between bolt (7), movable grafting inserted sheet (9) on spring assembly (8).

2. The spring stretching device according to claim 1, wherein the upper hanging plate (5) and the lower hanging plate (6) are both of a U-shaped structure, and the open ends of the upper hanging plate (5) and the lower hanging plate (6) are opposite to each other.

3. The spring stretching device as claimed in claim 1, wherein the spring assembly (8) comprises a spring body (81), both ends of the spring body (81) are fixedly provided with spring hanging plates (82), and the spring hanging plates (82) are connected with the plug pins (7).

4. A spring stretching device as defined in claim 3, wherein said inserting sheet (9) is an isosceles trapezoid structure, and a plurality of grooves (91) are formed at both waist edges of the inserting sheet (9), said grooves (91) are arc-shaped structures, and said inserting sheet (9) is symmetrically distributed along the axis of the spring body (81).

5. The spring stretching device according to claim 1, characterized in that the side plates at both sides of the upper hanging plate (5) and the lower hanging plate (6) are respectively provided with a waist-shaped hole (13), the bolt (7) slides and penetrates through the waist-shaped holes (13), the outer walls at both sides of the waist-shaped holes (13) are respectively provided with a stop groove (10), and a stop clip (11) is movably inserted in the stop grooves (10).

6. The spring stretching device as claimed in claim 5, wherein the distance between the two stop grooves (10) is equal to the distance between the outer walls of the upper hanging plate (5) and the lower hanging plate (6), the width of the blocking clip (11) is greater than the width of the waist-shaped hole (13), a clamping groove (12) is formed in the blocking clip (11), the clamping groove (12) is of a C-shaped structure, and the clamping groove (12) is matched with the stop grooves (10).