阅读说明：本技术 一种五连刀闸组件 (Five-connection disconnecting link assembly ) 是由 张文凯 张磊 郑晓果 王俊伟 白维正 张艳晓 李猛 吴小钊 何其彪 徐慧强 董冏 于 2021-07-05 设计创作，主要内容包括：本发明公开了一种五连刀闸组件,其包括驱动组件、连板、刀闸、限位板和触头组件。所述驱动组件的从动端铰接在所述连板上；所述连板铰接所述刀闸上；所述限位板铰接在所述刀闸上；所述触头组件固定在机架上；所述连板可撬动所述限位板,使所述限位板与所述触头组件卡合或分离。本发明具有自保持和自解锁功能,能够有效避免刀闸开关因位置间隙、电动力等因素导致出现合闸不到位、虚接等问题。(The invention discloses a five-connection disconnecting link assembly which comprises a driving assembly, a connecting plate, a disconnecting link, a limiting plate and a contact assembly. The driven end of the driving assembly is hinged to the connecting plate; the connecting plate is hinged to the disconnecting link; the limiting plate is hinged to the disconnecting link; the contact assembly is fixed on the frame; the connecting plate can pry the limiting plate to enable the limiting plate to be clamped or separated from the contact assembly. The invention has the functions of self-holding and self-unlocking, and can effectively avoid the problems of incomplete switching-on, virtual connection and the like caused by factors such as position clearance, electrodynamic force and the like of the disconnecting switch.)

1. A five-link knife switch assembly, comprising: the device comprises a driving assembly, a connecting plate (3), a disconnecting link (4), a limiting plate (5) and a contact assembly;

the driven end of the driving component is hinged on the connecting plate (3);

the connecting plate (3) is hinged on the disconnecting link (4);

the limiting plate (5) is hinged on the disconnecting link (4);

the contact assembly is fixed on the frame;

the connecting plate (3) can pry the limiting plate (5) to enable the limiting plate (5) to be clamped with or separated from the contact assembly.

2. The five-link disconnecting link assembly according to claim 1,

the connecting plate (3) is provided with a first round hole and a second long hole;

a third round hole and a fourth round hole are correspondingly formed in the disconnecting link (4);

a first pin shaft penetrates through the first round hole and the third round hole, so that the connecting plate (3) is hinged with the disconnecting link (4);

and a second pin shaft (8) penetrates through the second long hole and the fourth round hole, so that the connecting plate (3) slides along the disconnecting link (4).

3. The five-link disconnecting link assembly according to claim 1,

a fifth round hole is formed in the limiting plate (5);

a sixth round hole is correspondingly formed in the disconnecting link (4);

and a third pin shaft penetrates through the fifth round hole and the sixth round hole, so that the limiting plate (5) rotates along the disconnecting link (4).

4. The five-link disconnecting link assembly according to claim 3,

the contact assembly comprises a loop piece (9) and a fixed contact (10);

one end of the loop-shaped piece (9) is fixed on the frame, and the other end is fixed with the static contact (10);

the return piece (9) is provided with a connecting groove which is clamped or separated with the limiting plate (5);

and the static contact (10) and the disconnecting link (4) are switched on or switched off.

5. The five-link disconnecting link assembly according to claim 4,

the limiting plate (5) is provided with a first clamping arm and a second clamping arm;

the first clamping arm is clamped with or separated from the connecting plate (3);

the second clamping arm is clamped with or separated from the connecting groove.

6. The five-link disconnecting link assembly according to claim 5,

a fourth clamping arm is arranged on the connecting plate (3);

the fourth clamping arm is clamped with or separated from the first clamping arm.

7. The five-link disconnecting link assembly according to claim 6,

the limiting plate (5) is also provided with a third clamping arm;

an eighth round hole is formed in the third clamping arm;

and a fifth pin shaft (7) penetrates through the eighth round hole.

8. The five-link disconnecting link assembly according to claim 7,

a seventh round hole is formed in the disconnecting link (4), and a fourth pin shaft (6) penetrates through the seventh round hole;

the third pin shaft, the fourth pin shaft (6) and the fifth pin shaft (7) are connected through torsion springs.

9. The five-link disconnecting link assembly according to claim 5,

distance D when the second catch arm is separated from the loop (9)₁Is less than the distance D between the static contact (10) and the disconnecting link (4) during switching off₂。

10. The five-link disconnecting link assembly according to claim 1,

the driving assembly comprises a driving arm (1) and a connecting rod (2);

the driven end of the driving arm (1) is rotationally connected with the driving end of the connecting rod (2);

the driven end of the connecting rod (2) is hinged with the connecting plate (3).

Technical Field

The invention relates to the technical field of disconnecting link equipment, in particular to a five-connection disconnecting link assembly.

Background

In a power grid system, the knife switch is wide in application range and large in consumption, and plays an important role in power grid operation, so that the research on the switching-on limiting problem of the knife switch is of great significance.

At present, the problems of switch virtual connection, switch-on failure and the like sometimes occur when a disconnecting link switch is switched on, on one hand, the conditions of switch virtual connection, switch-on failure and the like possibly caused by the existence of gaps during switch-on because the disconnecting link switch has transmission gaps, and on the other hand, if the layout of a movable disconnecting link and a fixed disconnecting link is not reasonable, the switch disconnecting link is sprung open sometimes caused by electric power during switch-on, so that the problems of switch virtual connection, switch-on failure and the like are caused.

Disclosure of Invention

The invention aims to provide a five-link disconnecting link assembly which is used for solving at least one technical problem, has self-holding and self-unlocking functions and can effectively avoid the problems of incomplete switching-on, virtual connection and the like caused by factors such as position gaps, electric power and the like of a disconnecting link switch.

The embodiment of the invention is realized by the following steps:

a five-connection disconnecting link assembly comprises a driving assembly, a connecting plate, a disconnecting link, a limiting plate and a contact assembly.

The driven end of the driving component is hinged on the connecting plate.

The connecting plate is hinged to the disconnecting link.

The limiting plate is hinged to the disconnecting link.

The contact assembly is fixed on the frame.

The connecting plate can pry the limiting plate to enable the limiting plate to be clamped or separated from the contact assembly.

The technical effects are as follows: the frame, the driving component, the connecting plate and the disconnecting link form a double four-bar linkage.

In a preferred embodiment of the present invention, the connecting plate of the five-link disconnecting link assembly is provided with a first circular hole and a second long hole.

And a third round hole and a fourth round hole are correspondingly formed in the disconnecting link.

And a first pin shaft penetrates through the first round hole and the third round hole, so that the connecting plate is hinged with the disconnecting link.

And a second pin shaft penetrates through the second long hole and the fourth round hole, so that the connecting plate slides along the disconnecting link.

The technical effects are as follows: the connecting plate and the knife switch can generate relative displacement at a certain distance.

In a preferred embodiment of the present invention, the limiting plate of the five-link disconnecting link assembly is provided with a fifth circular hole.

And the disconnecting link is correspondingly provided with a sixth round hole.

And a third pin shaft penetrates through the fifth round hole and the sixth round hole, so that the limiting plate rotates along the disconnecting link.

In a preferred embodiment of the present invention, the contact assembly of the five-link disconnecting link assembly includes a loop-shaped member and a stationary contact.

One end of the loop-shaped piece is fixed on the rack, and the other end of the loop-shaped piece is fixed on the static contact.

The return piece is provided with a connecting groove which is clamped with or separated from the limiting plate.

And the static contact and the disconnecting link are switched on or switched off.

The technical effects are as follows: the functions of closing limit and self-holding are realized.

In a preferred embodiment of the present invention, the position-limiting plate of the five-link disconnecting link assembly is provided with a first clamping arm and a second clamping arm.

The first clamping arm is clamped with or separated from the connecting plate.

The second clamping arm is clamped with or separated from the connecting groove.

In a preferred embodiment of the present invention, a fourth locking arm is disposed on the connecting plate of the five-link disconnecting link assembly.

The fourth clamping arm is clamped with or separated from the first clamping arm.

The knife switch components are all operated by a first set of four-bar linkage mechanism formed by the driving arm, the connecting rod and the connecting plate, after the relative motion between the connecting plate and the knife switch is finished, a second set of four-bar linkage mechanism formed by the driving arm, the connecting rod, the connecting plate and the knife switch is operated, and the connecting plate and the knife switch together form a driven arm in the second set of four-bar linkage mechanism.

In the closing process of the disconnecting link switch, the driving assembly and the connecting plate drive the limiting plate to act, after the limiting plate connected with the disconnecting link is contacted with the loop-shaped piece, the torsion of the torsion spring is overcome, the torsion rotates to the connecting groove of the loop-shaped piece, and the limiting plate rotates to hook the loop-shaped piece under the action of the torsion spring, so that the closing limiting and self-holding functions are realized.

In the disconnecting switch opening process, the driving assembly acts to drive the connecting plate to move, so that the second long hole and the second pin shaft move relatively, the fourth clamping arm on the connecting plate is in contact with the first clamping arm on the limiting plate to drive the limiting plate to rotate, the limiting plate is made to withdraw from the connecting groove of the return piece, the disconnecting switch can be driven, the disconnecting switch is separated from the static contact, the opening and closing of the disconnecting switch are completed, and the self-unlocking function is achieved.

In a preferred embodiment of the present invention, the position-limiting plate of the five-link disconnecting link assembly is further provided with a third clamping arm.

And the third clamping arm is provided with an eighth round hole.

And a fifth pin shaft penetrates through the eighth round hole.

The technical effects are as follows: the angle of rotation of the restriction plate is limited.

In a preferred embodiment of the present invention, the knife switch of the five-link knife switch assembly further has a seventh circular hole, and the fourth pin passes through the seventh circular hole.

The third pin shaft, the fourth pin shaft and the fifth pin shaft are connected through torsion springs.

The technical effects are as follows: when the limiting plate rotates, a torsion force in a fixed direction is obtained. When the limiting plate overcomes the torsion of the torsion spring and rotates for a certain angle, the limiting plate can be blocked by the fourth pin shaft, and the torsion spring is guaranteed to be in the maximum torsion angle.

In a preferred embodiment of the present invention, the distance D between the second latch arm and the loop of the five-link disconnecting link assembly is less than the distance D between the second latch arm and the loop₁Is less than the distance D between the static contact and the disconnecting link during switching off₂。

The technical effects are as follows: in the process of closing the disconnecting link, the distance between the limiting plate and the clip is smaller than the distance between the disconnecting link and the static contact, arc striking is carried out in advance, the electric arc burning of the disconnecting link is prevented, and the reliability of a disconnecting link switch is improved.

In a preferred embodiment of the present invention, the driving assembly of the five-link knife switch assembly includes a driving arm and a connecting rod.

And the driven end of the driving arm is rotationally connected with the driving end of the connecting rod.

The driven end of the connecting rod is hinged with the connecting plate.

The embodiment of the invention has the beneficial effects that:

the five-link disconnecting link assembly is provided with a double four-link mechanism, in the switching-on and switching-off process, the disconnecting link assembly firstly forms a first set of four-link mechanism by the driving arm, the connecting rod and the connecting plate to act, after the relative motion between the connecting plate and the disconnecting link is finished, the driving arm, the connecting rod, the connecting plate and the disconnecting link form a second set of four-link mechanism to act, and the connecting plate and the disconnecting link together form a driven arm in the second set of four-link mechanism. The four-connecting-rod driven part switching mechanism adopts a set of driving four-connecting-rod assembly, the connecting groove is formed in the driven part, switching of the four-connecting-rod driven part is achieved at the switching-on position, and therefore the self-unlocking function of the limiting plate is achieved.

The five-connection disconnecting link assembly can be accurately limited, and the problems that a disconnecting link switch is not closed in place and is connected in a virtual mode due to a transmission gap, and a movable disconnecting link under electrodynamic force is repelled due to unreasonable arrangement of a movable disconnecting link and a static disconnecting link can be effectively avoided.

The five-connection disconnecting link assembly has self-holding and self-unlocking functions, and the limit of the disconnecting link cannot obstruct a switching-on process.

In the process of closing the disconnecting link, the distance between the limiting plate and the clip is smaller than the distance between the disconnecting link and the static contact, arc striking is carried out in advance, the electric arc burning of the disconnecting link is prevented, and the reliability of a disconnecting link switch is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a five-link disconnecting link assembly according to the present invention;

FIG. 2 is a schematic sectional view of the closing process of the five-link disconnecting link assembly according to the present invention;

FIG. 3 is a schematic cross-sectional view of a switching position of the five-link disconnecting link assembly according to the present invention;

fig. 4 is a schematic sectional view of the opening process of the five-link disconnecting link assembly according to the present invention.

In the figure: 1-a driving arm; 2-a connecting rod; 3-connecting the plates; 4-disconnecting link; 5-a limiting plate; 6-a fourth pin shaft; 7-a fifth pin shaft; 8-a second pin shaft; 9-a loop; and 10, static contact.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.

Referring to fig. 1 to 4, an embodiment of the invention provides a five-link disconnecting link assembly, which includes a driving assembly, a link plate 3, a disconnecting link 4, a limiting plate 5 and a contact assembly.

The driven end of the driving component is hinged on the connecting plate 3.

The connecting plate 3 is hinged on the disconnecting link 4.

The limiting plate 5 is hinged on the disconnecting link 4.

The contact assembly is fixed on the frame.

The connecting plate 3 can pry the limiting plate 5, so that the limiting plate 5 is clamped with or separated from the contact assembly.

The technical effects are as follows: the frame, the driving component, the connecting plate 3 and the disconnecting link 4 form a double four-bar linkage.

In a preferred embodiment of the present invention, the connecting plate 3 of the five-link disconnecting link assembly is provided with a first circular hole and a second long hole.

And a third round hole and a fourth round hole are correspondingly formed in the disconnecting link 4.

And a first pin shaft penetrates through the first round hole and the third round hole, so that the connecting plate 3 is hinged with the disconnecting link 4.

And a second pin shaft 8 penetrates through the second long hole and the fourth round hole, so that the connecting plate 3 slides along the disconnecting link 4.

The technical effects are as follows: the tie plate 3 and the knife switch 4 can be displaced in relation to each other at a distance.

In a preferred embodiment of the present invention, the limiting plate 5 of the five-link disconnecting link assembly is provided with a fifth circular hole.

And a sixth round hole is correspondingly formed on the disconnecting link 4.

And a third pin shaft penetrates through the fifth round hole and the sixth round hole, so that the limiting plate 5 rotates along the disconnecting link 4.

In the preferred embodiment of the present invention, the contact assembly of the five-link disconnecting link assembly includes a loop-shaped member 9 and a stationary contact 10.

One end of the loop-shaped part 9 is fixed on the frame, and the other end is fixed with the static contact 10.

The return piece 9 is provided with a connecting groove which is clamped with or separated from the limiting plate 5.

And the static contact 10 and the disconnecting link 4 are switched on or switched off.

The technical effects are as follows: the functions of closing limit and self-holding are realized.

In a preferred embodiment of the present invention, the position-limiting plate 5 of the five-link disconnecting link assembly is provided with a first clamping arm and a second clamping arm.

The first clamping arm is clamped with or separated from the connecting plate 3.

The second clamping arm is clamped with or separated from the connecting groove.

In a preferred embodiment of the present invention, a fourth locking arm is disposed on the connecting plate 3 of the five-link disconnecting link assembly.

The fourth clamping arm is clamped with or separated from the first clamping arm.

The knife gate components are formed by a first set of four-bar linkage mechanism consisting of the driving arm 1, the connecting rod 2 and the connecting plate 3 to act, after the relative motion between the connecting plate 3 and the knife gate 4 is finished, the driving arm 1, the connecting rod 2, the connecting plate 3 and the knife gate 4 form a second set of four-bar linkage mechanism to act, and the connecting plate 3 and the knife gate 4 form a driven arm in the second set of four-bar linkage mechanism together.

In the closing process of the disconnecting link switch, the driving assembly and the connecting plate 3 drive the limiting plate 5 to act, the limiting plate 5 connected with the disconnecting link 4 is contacted with the loop-shaped part 9, then the torsion of the torsion spring is overcome, the torsion of the torsion spring rotates to the connecting groove of the loop-shaped part 9, the limiting plate 5 rotates to hook the loop-shaped part 9 under the action of the torsion spring, and the closing limiting and self-holding functions are achieved.

In the disconnecting switch opening process, the driving assembly acts to drive the connecting plate 3 to move, so that the second long hole and the second pin shaft 8 move relatively, the fourth clamping arm on the connecting plate 3 is in contact with the first clamping arm on the limiting plate 5 to drive the limiting plate 5 to rotate, the limiting plate 5 is withdrawn from the connecting groove of the return-shaped part 9, the disconnecting switch 4 can be driven, the disconnecting switch 4 is separated from the static contact 10, the disconnecting switch opening is completed, and the self-unlocking function is realized.

In a preferred embodiment of the present invention, the position-limiting plate 5 of the five-link disconnecting link assembly is further provided with a third clamping arm.

And the third clamping arm is provided with an eighth round hole.

And a fifth pin shaft 7 passes through the eighth round hole.

The technical effects are as follows: the angle of rotation of the restriction plate 5 is defined.

In a preferred embodiment of the present invention, a seventh circular hole is further formed on the switch 4 of the five-link switch assembly, the fourth pin 6 passes through the seventh circular hole, and the third pin, the fourth pin 6 and the fifth pin 7 are connected by a torsion spring.

The technical effects are as follows: so that the limiting plate 5 can obtain a torsion force in a fixed direction when rotating. When the limiting plate 5 overcomes the torsion of the torsion spring and rotates for a certain angle, the limiting plate can be blocked by the fourth pin shaft 6, and the torsion spring is ensured to be in the maximum torsion angle. In the preferred embodiment of the present invention, the distance D between the second latch arm of the four-bar disconnecting link assembly and the loop 9 is set₁Is less than the distance D between the static contact 10 and the disconnecting link 4 during switching off₂。

The technical effects are as follows: in the process of closing and opening the disconnecting link, the distance between the limiting plate 5 and the clip 9 is smaller than the distance between the disconnecting link 4 and the static contact 10, so that arc striking is performed in advance, the electric arc burning of the disconnecting link is prevented, and the reliability of a disconnecting link switch is improved.

In the preferred embodiment of the present invention, the driving assembly of the five-link knife switch assembly includes a driving arm 1 and a connecting rod 2.

And the driven end of the driving arm 1 is rotatably connected with the driving end of the connecting rod 2.

The driven end of the connecting rod 2 is hinged with the connecting plate 3.

The embodiment of the invention aims to protect a five-connection disconnecting link assembly, which has the following effects:

the five-link disconnecting link assembly provided by the invention is provided with a double four-link mechanism, in the switching-on and switching-off process, the disconnecting link assembly firstly forms a first set of four-link mechanism by the driving arm 1, the connecting rod 2 and the connecting plate 3 to act, after the relative motion between the connecting plate 3 and the disconnecting link 4 is finished, the driving arm 1, the connecting rod 2, the connecting plate 3 and the disconnecting link 4 form a second set of four-link mechanism to act, and the connecting plate 3 and the disconnecting link 4 together form a driven arm in the second set of four-link mechanism. Adopt one set of four connecting rod subassemblies of drive, set up the spread groove on the follower, realize the switching of four connecting rod followers at the combined floodgate position to realize limiting plate 5's self-unlocking function.

The five-connection disconnecting link assembly can be accurately limited, and the problems that a disconnecting link switch is not closed in place and is connected in a virtual mode due to a transmission gap, and a movable disconnecting link under electrodynamic force is repelled due to unreasonable arrangement of a movable disconnecting link and a static disconnecting link can be effectively avoided.

The five-connection disconnecting link assembly has self-holding and self-unlocking functions, and the limit of the disconnecting link cannot obstruct a switching-on process.

In the process of closing and opening the disconnecting link, the distance between the limiting plate 5 and the clip 9 is smaller than the distance between the disconnecting link 4 and the static contact 10, so that arc striking is performed in advance, the electric arc burning of the disconnecting link is prevented, and the reliability of a disconnecting link switch is improved.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.