CN219202974U

CN219202974U - Insulating pull rod with buffer function

Info

Publication number: CN219202974U
Application number: CN202223275731.6U
Authority: CN
Inventors: 崔元春; 李绍文; 刘明杰; 薛健
Original assignee: Hefei Yangming Electric Technology Co ltd
Current assignee: Hefei Yangming Electric Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-06-16
Anticipated expiration: 2032-12-07

Abstract

The utility model discloses an insulating pull rod with a buffering function, and relates to the technical field of insulating pull rods. The utility model comprises an insulating tube, a connecting rod and a connecting screw rod, wherein the connecting screw rod is fixedly connected to the bottom end of the insulating tube, the top end of the insulating tube is provided with a movable cavity, the connecting rod is movably arranged in the movable cavity, and a buffer assembly is arranged in the movable cavity; the buffer assembly comprises a spring seat, a buffer block, a first spring, a T-shaped mounting seat and a second spring, wherein the spring seat is fixedly connected to the peripheral side face of the connecting rod, the buffer block is fixedly connected to the bottom end of the connecting rod, the first spring is sleeved on the peripheral side face of the connecting rod, one end of the first spring abuts against the bottom end of the spring seat, and the other end of the first spring abuts against the bottom wall of the movable cavity. According to the utility model, through the designed buffer assembly, the service life of the insulating pull rod is prolonged, and the insulating pull rod is more stable in working.

Description

Insulating pull rod with buffer function

Technical Field

The utility model belongs to the technical field of insulating pull rods, and particularly relates to an insulating pull rod with a buffering function.

Background

The insulating pull rod is an important part of the circuit breaker, has high requirements on the electrical performance and the mechanical performance of the circuit breaker, and the quality of the insulating pull rod directly influences the reliability of the circuit breaker and the safe operation of a power grid. The insulating pull rod generally comprises an insulating tube and joints glued at two ends of the insulating tube, and adhesive is filled between the inner wall surface of the insulating tube and the outer surface of the joints for bonding, so that the insulating pull rod is formed.

The insulating pull rod is generally provided with certain roughness on the inner wall of the insulating tube and the outer wall of the joint or adopts threaded fit to improve the bonding strength. When the device is used, the tensile force applied to the connector is transmitted to the insulating tube, so that the bonding structure between the inner wall surface of the insulating tube and the outer surface of the connector is intensively stressed, the bonding structure is destroyed when the acting force exceeds a certain limit, serious power failure accidents are caused, personal safety is even endangered, and the operation and maintenance cost is increased.

In the existing insulating pull rod, when the connecting rod is stressed, the connecting rod collides with the insulating tube, and meanwhile, vibration can be generated when the connecting rod collides and is transmitted to parts connected with the insulating pull rod and other parts, so that the work is unstable.

Disclosure of Invention

The utility model aims to provide an insulating pull rod with a buffering function, which solves the problem that in the existing insulating pull rod, when a connecting rod is stressed, the connecting rod collides with an insulating pipe, and meanwhile, vibration is generated when the connecting rod collides and is transmitted to parts connected with the insulating pull rod and other parts, so that the working is unstable.

In order to solve the technical problems, the utility model is realized by the following technical scheme: the utility model provides an insulating pull rod with buffer function, includes insulating tube, connecting rod and connecting screw rod, connecting screw rod fixed connection is in the bottom of insulating tube, the activity chamber has been seted up on the top of insulating tube, the connecting rod activity sets up in the activity intracavity, just be provided with buffer assembly in the activity intracavity;

the buffer assembly comprises a spring seat, a buffer block, a first spring, a T-shaped mounting seat and a second spring, wherein the spring seat is fixedly connected to the peripheral side face of the connecting rod, the buffer block is fixedly connected to the bottom end of the connecting rod, the first spring is sleeved on the peripheral side face of the connecting rod, one end of the first spring is propped against the bottom end of the spring seat, the other end of the first spring is propped against the bottom wall of the movable cavity, the T-shaped mounting seat is fixedly connected to the top end of the insulating tube, a propping groove is formed in the bottom end of the T-shaped mounting seat, the second spring is sleeved on the peripheral side face of the connecting rod, one end of the second spring is propped against the top end of the spring seat, and the other end of the second spring is propped against the bottom wall of the propping groove.

Preferably, a connecting through hole is formed in the center of the top end of the T-shaped mounting seat, one end of the connecting rod penetrates through the connecting through hole, and the connecting through hole is movably arranged in the connecting through hole.

Preferably, a plurality of threaded through holes are formed in the T-shaped mounting seat, thread grooves corresponding to the threaded through holes one by one are formed in the top end of the insulating tube, and the T-shaped mounting seat is fixedly connected with the insulating tube through fixing bolts.

Preferably, an annular buffer cushion is fixedly connected to the top edge of the spring seat, and the annular buffer cushion is located on the outer side of the second spring.

Preferably, the elastic coefficient of the first spring is larger than that of the second spring.

Preferably, a screw hole is formed in one end, far away from the insulating tube, of the connecting rod, and the screw hole is used for being fixedly connected with the opening/closing driving mechanism in a screwed mode.

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

according to the utility model, through the designed buffer assembly, when the connecting rod receives the acting force of the breaker, the acting force is transmitted to the first spring through the spring seat fixedly connected with the peripheral side surface, the first spring slowly releases part of the acting force, so that the connecting rod cannot rapidly move to collide with the insulating tube, meanwhile, the buffer block fixedly connected with the bottom end of the connecting rod can absorb impact and vibration, noise generated by direct collision between the connecting rod and the insulating tube is reduced, abrasion between the connecting rod and the insulating tube is eliminated, when the first spring is restored to an original state by elastic deformation, the second spring slowly releases the acting force applied to the mounting seat, noise generated by direct collision between the connecting rod and the T-shaped mounting seat is reduced, abrasion between the connecting rod and the T-shaped mounting seat is eliminated, the service life of the insulating pull rod is prolonged, and the insulating pull rod can be more stable in operation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of an insulated pull rod with buffering function according to the present utility model;

fig. 2 is a front view of an insulation pull rod with a buffering function according to the present utility model;

FIG. 3 is a half cross-sectional view of the insulating tie rod with cushioning function of the present utility model at A-A of FIG. 2;

FIG. 4 is an enlarged view of the insulating tie rod with buffering function at I in FIG. 3 according to the present utility model;

fig. 5 is a perspective view of a T-shaped mounting seat of an insulation pull rod and a connecting member thereof with a buffering function according to the present utility model.

In the figure: 1. an insulating tube; 2. a movable cavity; 3. a connecting rod; 4. a spring seat; 5. a buffer block; 6. a first spring; 7. a T-shaped mounting seat; 8. a holding groove; 9. a screw hole; 10. a second spring; 11. a connecting screw; 12. a fixing bolt; 13. an annular cushion.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-5, the utility model relates to an insulation pull rod with a buffer function, which comprises an insulation pipe 1, a connecting rod 3 and a connecting screw rod 11, wherein the connecting screw rod 11 is fixedly connected to the bottom end of the insulation pipe 1, a movable cavity 2 is formed in the top end of the insulation pipe 1, the connecting rod 3 is movably arranged in the movable cavity 2, and a buffer assembly is arranged in the movable cavity 2; the buffer assembly comprises a spring seat 4, a buffer block 5, a first spring 6, a T-shaped mounting seat 7 and a second spring 10, wherein the spring seat 4 is fixedly connected to the peripheral side face of the connecting rod 3, the buffer block 5 is fixedly connected to the bottom end of the connecting rod 3, the first spring 6 is sleeved on the peripheral side face of the connecting rod 3, one end of the first spring 6 is propped against the bottom end of the spring seat 4, the other end of the first spring 6 is propped against the bottom wall of the movable cavity 2, the T-shaped mounting seat 7 is fixedly connected to the top end of the insulating tube 1, the bottom end of the T-shaped mounting seat 7 is provided with a propping groove 8, the second spring 10 is sleeved on the peripheral side face of the connecting rod 3, one end of the second spring 10 is propped against the top end of the spring seat 4, the other end of the second spring 10 is propped against the bottom wall of the propping groove 8, when the connecting rod 3 receives the acting force of the breaker, the connecting rod 3 is transmitted to the first spring 6 through the peripheral side face fixedly connected, the first spring 6 slowly releases part of the force, the connecting rod 3 cannot collide with the insulating tube 1, and meanwhile, the buffer block 5 fixedly connected to the bottom end of the connecting rod 3 can also be collided with the connecting rod 3, and the impact noise can be directly reduced, and the impact can be directly generated between the impact and the insulating tube can be eliminated.

Wherein, connecting through-hole has been seted up at the top center of T type mount pad 7, and connecting rod 3's one end through-hole, and the activity sets up in connecting through-hole for connecting rod 3 can reciprocate in connecting through-hole when the atress.

Wherein, a plurality of screw thread through-holes have been seted up on the T type mount pad 7, the screw thread groove with screw thread through-hole in one-to-one is seted up on the top of insulating tube 1, through fixing bolt 12 fixed connection between T type mount pad 7 and the insulating tube 1, when connecting rod 3 takes place to damage, can be through loose fixing bolt 12, separate T type mount pad 7, take out first spring 6 afterwards, finally take out connecting rod 3 and change, need change whole insulating pull rod after having avoided connecting rod 3 to damage.

The annular buffer cushion 13 is fixedly connected to the top edge of the spring seat 4, the annular buffer cushion 13 is located on the outer side of the second spring 10, noise generated by direct collision between the connecting rod 3 and the T-shaped mounting seat 7 is reduced, and abrasion between the connecting rod and the T-shaped mounting seat is eliminated.

Wherein the elastic coefficient of the first spring 6 is larger than that of the second spring 10, and the movement speed of the connecting rod 3 when contacting with the insulating tube 1 is reduced.

Wherein, screw hole 9 has been seted up to the one end that connecting rod 3 kept away from insulating tube 1, and screw hole 9 is used for with divide/closing drive mechanism spiro union fixedly.

The working principle of the utility model is as follows:

when personnel use, when connecting rod 3 receives the effort of circuit breaker, the connecting rod 3 will receive the power, spring holder 4 through week side fixed connection transmits for first spring 6, first spring 6 carries out slow release with partial power, make connecting rod 3 can not fast motion collide with insulating tube 1, simultaneously connecting rod 3 bottom fixed connection's buffer block 5 also can absorb impact and vibrations, the noise that connecting rod 3 and insulating tube 1 direct collision can produce and eliminate the wearing and tearing between the two, when first spring 6 is restored to original state by elastic deformation, second spring 10 can apply T type mount pad 7 to its power, carry out slow release, reduce the noise that connecting rod 3 and T type mount pad 7 direct collision can produce and eliminate wearing and tearing between the two, improve insulating pull rod's life, and the during operation can be more stable.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an insulating pull rod with buffer function, includes insulating tube (1), connecting rod (3) and connecting screw rod (11), its characterized in that: the connecting screw rod (11) is fixedly connected to the bottom end of the insulating tube (1), the top end of the insulating tube (1) is provided with a movable cavity (2), the connecting rod (3) is movably arranged in the movable cavity (2), and a buffer assembly is arranged in the movable cavity (2);

the buffer assembly comprises a spring seat (4), a buffer block (5), a first spring (6), a T-shaped mounting seat (7) and a second spring (10), wherein the spring seat (4) is fixedly connected to the peripheral side face of a connecting rod (3), the buffer block (5) is fixedly connected to the bottom of the connecting rod (3), the first spring (6) is sleeved on the peripheral side face of the connecting rod (3), one end of the first spring (6) abuts against the bottom of the spring seat (4), the other end of the first spring (6) abuts against the bottom wall of a movable cavity (2), the T-shaped mounting seat (7) is fixedly connected to the top end of an insulating tube (1), an abutting groove (8) is formed in the bottom end of the T-shaped mounting seat (7), the second spring (10) is sleeved on the peripheral side face of the connecting rod (3), one end of the second spring (10) abuts against the top end of the spring seat (4), and the other end of the second spring (10) abuts against the bottom wall of the abutting groove (8).

2. The insulating pull rod with the buffering function according to claim 1, wherein a connecting through hole is formed in the center of the top end of the T-shaped mounting seat (7), one end of the connecting rod (3) penetrates through the connecting through hole, and the connecting rod is movably arranged in the connecting through hole.

3. The insulation pull rod with the buffering function according to claim 1, wherein a plurality of threaded through holes are formed in the T-shaped mounting seat (7), thread grooves which correspond to the threaded through holes one by one are formed in the top end of the insulation tube (1), and the T-shaped mounting seat (7) is fixedly connected with the insulation tube (1) through fixing bolts (12).

4. An insulated pull rod with buffering function according to claim 1, wherein the top edge of the spring seat (4) is fixedly connected with a ring-shaped buffer pad (13), and the ring-shaped buffer pad (13) is located on the outer side of the second spring (10).

5. An insulated pull rod with a buffering function according to claim 1, characterized in that the spring coefficient of the first spring (6) is larger than the spring coefficient of the second spring (10).

6. An insulating pull rod with a buffering function according to claim 1, characterized in that a screw hole (9) is formed at one end of the connecting rod (3) far away from the insulating tube (1).