CN216980490U - A link gear for falling automatic triggering of switch - Google Patents
A link gear for falling automatic triggering of switch Download PDFInfo
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- CN216980490U CN216980490U CN202220608883.4U CN202220608883U CN216980490U CN 216980490 U CN216980490 U CN 216980490U CN 202220608883 U CN202220608883 U CN 202220608883U CN 216980490 U CN216980490 U CN 216980490U
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Abstract
The utility model discloses an automatic triggering linkage mechanism for a drop switch, which is provided with a base, wherein a main shaft, a transmission shaft and an execution shaft are respectively arranged on the base, the main shaft and the execution shaft are connected with a trigger spring through a crank arm structure, two groups of intermediate shaft components on the main shaft are activated through the trigger spring to generate rotating force, so that a sector cam is separated from the intermediate shaft, further rotating force is generated by combining a hanging spring on the base, the transmission shaft and the execution shaft rapidly rotate and the rotating force is converted into upward force to a connecting rod seat, and a linkage function is realized; the utility model has the advantages that: the three-phase linkage function of the drop switch is realized in a mechanical mechanism mode, the delay from triggering to linkage is low, the triggering effect is sensitive, and the reliability is high.
Description
Technical Field
The utility model relates to the field of electrical safety, in particular to a mechanical multi-linkage device of an electrical switch.
Background
In the prior art, a three-phase drop switch often appears in daily life of people, and in the use process of the existing drop switch, due to long-time work, load change or unexpected faults and the existence of external weather factors, when one pole of a conventional product drops due to overload or sudden short-circuit fault, the other two poles can not realize drop disconnection, so that a transformer or other electrical switches at the lower end of the conventional product are in phase-failure operation, once the condition occurs, three-phase electrical equipment such as a three-phase motor and the like in operation can be heated and burnt, more serious people can cause greater loss, and meanwhile, an electric control device can not be added to carry out secondary brake-off on the other two phases of the drop switch, so that a reliable structure is needed, and the problem that the linkage of the three-phase base can not be automatically triggered can be solved in a mechanical structure mode, thereby realize the structure that the drop switch opens and shuts and can not go on simultaneously.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model discloses an automatic triggering linkage mechanism for a drop switch.
The specific technical scheme is as follows:
an automatic triggering linkage mechanism for a drop switch is provided with a base, one end of a triggering spring arranged on the base is coupled with a triggering connecting lever, the other end of the triggering spring is coupled with a connecting lever on an execution shaft, the execution shaft is coupled on the base, the triggering crank arm is arranged on the main shaft, the end part of the triggering crank arm is also connected with the waist groove of the connecting rod seat through a pin shaft, the main shaft is also connected with the base in a shaft mode, two groups of intermediate shaft components are further arranged on the main shaft, two mounting frames used for mounting the intermediate shafts are arranged between the two groups of intermediate shaft components, the two groups of the intermediate shaft components are arranged on the main shaft and the transmission shaft in a turnover and overlapped way by taking the intermediate shaft as a center, the transmission shaft is connected to the base in a shaft mode, and the two groups of intermediate shaft assemblies are triggered to rotate by the execution shaft and the transmission shaft respectively due to the overturning overlapped layout; the intermediate shaft assembly comprises a fan-shaped cam coupled on the main shaft, one end of the intermediate shaft coupled in the mounting frame is provided with a notch, a semi-circular sliding groove is arranged on the circumferential body of the intermediate shaft, the semi-circular sliding groove is abutted against the arc surface of the fan-shaped cam, and the notch of the intermediate shaft is coupled with a connecting crank arm arranged on the transmission shaft; the trigger crank arm on the main shaft is also connected with the lower end of the connecting rod seat and an execution crank arm arranged on the transmission shaft through a pin shaft; and the execution shaft and the transmission shaft are respectively provided with a hanging spring crank arm, and the two hanging spring crank arms are directly connected together through a hanging spring.
The area of the semicircular sliding groove is half of the area of the circular section of the cylindrical body of the intermediate shaft.
The lower end of the connecting rod seat and a notch at the joint of the execution crank arm and the trigger crank arm are sliding chutes.
The utility model has the advantages that: the three-phase linkage function of the drop switch is realized in a mechanical mechanism mode, the delay from triggering to linkage is low, the triggering effect is sensitive, and the reliability is high.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partially enlarged view of a portion a of fig. 1.
Detailed Description
The utility model is described in detail below with reference to the accompanying drawings, as shown in the figures, an automatic triggering linkage mechanism for a drop switch is provided with a base 1, one end of a trigger spring 2 arranged on the base is coupled with a trigger crank arm 3, the other end of the trigger spring is coupled with a connecting crank arm 4 on an execution shaft 5, the execution shaft is coupled on the base, the trigger crank arm is arranged on a main shaft 6, the end part of the trigger crank arm is further connected with a waist groove of a connecting rod seat 7 through a pin shaft 8, the main shaft is also coupled on the base, the main shaft is further provided with two groups of intermediate shaft components 9, two mounting frames 10 for mounting intermediate shafts are arranged between the two groups of intermediate shaft components, the two groups of intermediate shaft components are arranged on the main shaft and a transmission shaft 11 in a turnover overlapped arrangement by taking the intermediate shafts as the center, the transmission shaft is coupled on the base, and the two groups of intermediate shaft components are in a turnover overlapped arrangement, the executing shaft and the transmission shaft are respectively triggered to rotate, and the difference is that a middle shaft component assembled with the executing shaft is structurally connected through a crank connecting rod 12; the intermediate shaft assembly comprises a fan-shaped cam 91 which is coupled on the main shaft, one end of an intermediate shaft 92 which is coupled in the mounting frame is provided with a notch, a semi-circular sliding groove 921 is arranged on the circumference body of the intermediate shaft, the semi-circular sliding groove is abutted against the arc surface of the fan-shaped cam, and the notch 922 of the intermediate shaft is coupled with a connecting crank arm 93 which is arranged on the transmission shaft; the trigger crank arm on the main shaft is also connected with the lower end of the connecting rod seat and an execution crank arm 13 arranged on the transmission shaft through a pin shaft; and the execution shaft and the transmission shaft are respectively provided with a hanging spring crank arm 14, and the two hanging spring crank arms are directly connected together through a hanging spring.
The area of the semicircular sliding groove is half of the area of the circular section of the cylindrical body of the intermediate shaft.
The lower end of the connecting rod seat and a notch at the joint of the execution crank arm and the trigger crank arm are sliding chutes.
The working principle of the utility model is as follows: when the position of the connecting rod seat on the base is out of constraint, and after the position of the connecting rod seat is not completely defined, the sliding groove in the connecting rod seat can be driven to produce displacement by the movement of the pin shaft, after the position of the connecting rod seat is out of constraint, the spring is triggered to further produce deformation to pull the main shaft to rotate, and meanwhile, the connecting crank arm arranged on the main shaft rotates to drive the intermediate shaft to slightly rotate, so that the abutting surfaces of the sector cam and the semicircular sliding groove of the intermediate shaft are separated, and further the hanging spring is out of constraint, the two ends of the hanging spring begin to pull the transmission shaft and the execution shaft to rotate, so that the crank connecting rod on the execution shaft drives the sector cam of another set of intermediate shaft assembly to be separated from the abutting surfaces of the semicircular sliding groove of the intermediate shaft, and therefore, the hanging spring is completely separated from the constraint, the force for deforming the hanging spring acts on the execution shaft and the transmission shaft, then the rotation of the two shafts generates upward driving force to the connecting rod seat by the combination of the connecting crank arm, and further realize the linkage function of automatic triggering.
Claims (3)
1. The utility model provides an automatic triggering's link gear for falling switch which characterized in that: the device comprises a base, wherein one end of a trigger spring arranged on the base is in shaft connection with a trigger crank arm, the other end of the trigger spring is in shaft connection with a connecting crank arm on an execution shaft, the execution shaft is in shaft connection with the base, the trigger crank arm is arranged on a main shaft, the end part of the trigger crank arm is also connected with a waist groove of a connecting rod seat through a pin shaft, the main shaft is also in shaft connection with the base, two groups of intermediate shaft assemblies are also arranged on the main shaft, two mounting frames used for mounting the intermediate shafts are arranged between the two groups of intermediate shaft assemblies, the two groups of intermediate shaft assemblies take the intermediate shafts as centers, the layout of overturning coincidence is arranged on the main shaft and a transmission shaft, the transmission shaft is in shaft connection with the base, and the two groups of intermediate shaft assemblies are respectively triggered to rotate by the execution shaft and the transmission shaft due to the layout of overturning coincidence, and the difference is that the intermediate shaft assemblies assembled with the execution shaft are connected through a crank connecting rod structure; the intermediate shaft assembly comprises a fan-shaped cam coupled on the main shaft, one end of the intermediate shaft coupled in the mounting frame is provided with a notch, a semi-circular sliding groove is arranged on the circumferential body of the intermediate shaft, the semi-circular sliding groove is abutted against the arc surface of the fan-shaped cam, and the notch of the intermediate shaft is coupled with a connecting crank arm arranged on the transmission shaft; the trigger crank arm on the main shaft is also connected with the lower end of the connecting rod seat and an execution crank arm arranged on the transmission shaft through a pin shaft; and the execution shaft and the transmission shaft are respectively provided with a hanging spring crank arm, and the two hanging spring crank arms are directly connected together through a hanging spring.
2. The automatically triggered linkage mechanism for a drop switch of claim 1, wherein: the area of the semicircular sliding groove is half of the area of the circular section of the cylindrical body of the intermediate shaft.
3. The automatically triggered linkage mechanism for a drop switch of claim 1, wherein: the lower end of the connecting rod seat and a notch at the joint of the execution crank arm and the trigger crank arm are sliding chutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220608883.4U CN216980490U (en) | 2022-03-21 | 2022-03-21 | A link gear for falling automatic triggering of switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220608883.4U CN216980490U (en) | 2022-03-21 | 2022-03-21 | A link gear for falling automatic triggering of switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216980490U true CN216980490U (en) | 2022-07-15 |
Family
ID=82360702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220608883.4U Active CN216980490U (en) | 2022-03-21 | 2022-03-21 | A link gear for falling automatic triggering of switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216980490U (en) |
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2022
- 2022-03-21 CN CN202220608883.4U patent/CN216980490U/en active Active
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