WO2014032584A1

WO2014032584A1 - Interlocking apparatus of transfer switch

Info

Publication number: WO2014032584A1
Application number: PCT/CN2013/082439
Authority: WO
Inventors: 周密; 沈迪; 尤安顺; 季慧玉
Original assignee: 上海电科电器科技有限公司; 浙江正泰电器股份有限公司
Priority date: 2012-08-30
Filing date: 2013-08-28
Publication date: 2014-03-06
Also published as: CN103681031B; BR112015004287B1; NO2892069T3; ES2657229T3; BR112015004287A2; EP2892069A4; CN103681031A; EP2892069A1; PL2892069T3; EP2892069B1

Abstract

Disclosed is an interlocking apparatus of a transfer switch. The transfer switch comprises a primary side operating mechanism and a backup side operating mechanism. The interlocking apparatus comprises a primary side active connecting rod, a primary side passive connecting rod, a primary side executing connecting rod, a backup side active connecting rod, a backup side passive connecting rod, and a backup side executing connecting rod. The primary side active connecting rod moves along with a main shaft of the primary side operating mechanism. The primary side passive connecting rod is connected to the primary side active connecting rod. The primary side executing connecting rod is connected to the primary side passive connecting rod and is installed onto a side panel of the backup side operating mechanism. The primary side executing connecting rod rotates around a second fulcrum on the side panel of the backup side operating mechanism. The backup side active connecting rod moves along with a main shaft of the backup side operating mechanism. The backup side passive connecting rod is connected to the backup side active connecting rod. The backup side executing connecting rod is connected to the backup side passive connecting rod and is installed onto a side panel of the primary side operating mechanism. The backup side executing connecting rod rotates around a first fulcrum on the side panel of the primary side operating mechanism.

Description

Interlocking device for transfer switch

The present invention relates to the field of low voltage electrical appliances, and more particularly to an interlocking device for a transfer switch (TSE). Background technique

Switching switch electronics (TSE) are mainly used for the conversion of two power supplies. When the power supply fails, such as power failure, power failure or frequency change, the load circuit is switched from one power source, such as a common power source to another power source, such as standby. The power supply is used to ensure the supply of important loads. In addition, the transfer switch can also be used for the conversion of two loads, which does not allow the two sets of contacts to close at the same time during the conversion of the power supply.

In the existing transfer switch electrical appliances, most of the interlocking between the two power supplies is a fork fork technology. When the power supply on one side is closed, the manual shift fork (also called a stopper) is used to withstand the closing spindle, so that another One side can not be closed, this method is mainly applied to small-capacity transfer switch electrical appliances, and for large-capacity transfer switch electrical appliances, because of its large operating force, the impact force during operation is large, such as the use of the captive closing spindle or the closing spindle The method of driving the interlocking device, the interlocking device is subjected to large stress and low reliability, resulting in low life and large volume.

Patent Application No. 201 1 10161233.6, entitled "Interlocking Device for Transfer Switch", proposes an interlocking device for a transfer switch comprising: an upper portion and a lower portion having a symmetrical structure, the upper and lower portions of the interlocking device being symmetrically mounted At the intermediate gap of the operating mechanism of the changeover switch, the upper and lower portions include an interlocking lever, a locking lever mounted on the mechanism side plate, an unlocking lever, and a return spring fixed between the locking and unlocking levers on the side panel The limit pin has a return spring that is fixed at one end to the interlocking lever. The closing half shaft of one of the upper part or the lower part of the operating mechanism rotates, and the interlocking rod is pushed up and down during the rotation, and the other end of the interlocking rod is pressed against the closing half shaft of the other part of the operating mechanism and the buckle is locked When the upper and lower closing half shafts of the operating mechanism are simultaneously operated, the closing half shafts of the two parts are held by the other part of the interlocking rods, thereby achieving the connection between the common side power source and the standby side power source. lock. The solution proposed by this patent application is directed to large-capacity conversion The switch electric appliance can complete the interlocking function by using the locking lever, the unlocking lever, the return spring, etc., but the installation and debugging are difficult, and the work requirement precision is high.

Patent Application No. 201 1 10308801 .0, entitled "Interlocking Device of Transfer Switch", discloses an interlock for a transfer switch comprising: an upper portion and a lower portion having a symmetrical structure, the interlock device being mounted for conversion At the intermediate gap of the operating mechanism of the switch, the upper and lower portions include an interlocking lever, a limiting pin at the end of the interlocking lever, a return spring fixed at one end to the interlocking lever, and a position between the limiting pin and the return spring. The roller, the end of the interlocking rod extends out of the arcuate upper projection. The main shaft of one part of the upper part or the lower part of the operating mechanism drives the cantilever to rotate, and during the rotation, the interlocking rod is pushed to rotate around the rotating point, and the protruding portion on the interlocking rod presses the tripping rod of the other part of the operating mechanism to prevent it from being Move to achieve switching between the common side power source and the standby side power source. The solution proposed by the patent application is also directed to a large-capacity transfer switch electric appliance, which can directly perform the interlocking function by directly driving the opening shaft through the closing spindle, but the parts are subjected to large force, and the breaking shaft is easily broken, and the reliability is poor. Summary of the invention

The invention aims to propose an interlocking device for a changeover switch with low difficulty in commissioning installation and small force on parts.

According to an embodiment of the present invention, an interlock device for a changeover switch is provided. The changeover switch includes a common side operating mechanism and a standby side operating mechanism, and the interlocking device includes a common side active link, a common side driven link, and a common The side execution link, the standby side active link, the standby side driven link, and the standby side execution link. The common side active link is connected to the main shaft of the common side operating mechanism and moves with the main shaft. The common side driven link is connected to the common side active link, and the common side execution link is connected to the common side driven link. The rod is mounted on the side plate of the standby side operating mechanism, and the common side execution link rotates around the second pivot point on the side plate of the standby side operating mechanism; the standby side active link is connected to the main shaft of the standby side operating mechanism and moves with the main shaft. The standby side driven link is connected to the standby side active link, the standby side execution link is connected to the standby side driven link, the standby side execution link is mounted to the side plate of the common side operating mechanism, and the standby side performs the link winding The first pivot point on the side panel of the common side operating mechanism rotates. In one embodiment, when the common side operating mechanism is closed, the common side active link moves with the main shaft of the common side operating mechanism, and drives the common side driven link to move, and the common side driven link drives the common side to execute the connecting rod. The second pivot point on the side plate of the standby side operating mechanism is rotated and pressed against the spare side opening half shaft of the standby side operating mechanism to prevent the standby side operating mechanism from closing. When the common side operating mechanism is opened, the common side active link is reset with the spindle movement of the common side mechanism, and the common side is driven by the common side driven link to perform the link reset, and the spare side opening half shaft of the standby side operating mechanism is released. The standby side operating mechanism can be closed normally.

In one embodiment, the common side active link has a circular arc shape, the common side driven link has a folded rod shape, and the common side execution link has a bifurcated shape, a common side active link, a common side driven link, and The common side execution links are sequentially connected to form a multi-link mechanism. The common side active link, the common side driven link and the common side execution link are arranged in order from top to bottom.

In one embodiment, when the standby side operating mechanism is closed, the standby side active link moves with the spindle of the standby side operating mechanism to drive the standby side driven link to move, and the standby side driven link drives the standby side to execute the connecting rod. Rotate around the first pivot point on the side panel of the common side operating mechanism and press the common side opening half shaft of the common side operating mechanism to prevent the common side operating mechanism from closing. When the standby side operating mechanism is opened, the standby side active link is reset with the spindle movement of the standby side operating mechanism, and the standby side is driven by the standby side driven link to perform the link reset, and the common side opening half shaft of the common side operating mechanism is released. The common side operating mechanism can be closed normally.

In one embodiment, the spare side active link has a circular arc shape, the spare side driven link has a folded rod shape, and the spare side execution link has a bifurcated shape, a spare side active link, a spare side driven link, and The spare side execution links are sequentially connected to constitute a multi-link mechanism. The standby side active link, the standby side driven link, and the spare side execution link are arranged in order from the bottom to the top.

In one embodiment, the interlock is mounted at a gap between the common side operating mechanism and the standby side operating mechanism.

The interlocking device of the changeover switch of the invention has the advantages of simple structure, safety and reliability, small occupied space, and driving the interlocking rod through the rotation of the operating mechanism main shaft to prevent simultaneous switching of the common side power source and the standby side power source, which is easy to realize without increasing the product volume. In this case, the mechanical interlocking of the two mechanisms can be reliably achieved. DRAWINGS

The above and other features, advantages and advantages of the present invention will become more apparent from the description of the appended claims appended claims

1a and 1b disclose a state in which an interlock of a changeover switch is installed between two operating mechanisms in accordance with an embodiment of the present invention.

Fig. 2 discloses a structure in which the interlock of the changeover switch is in an initial state in which the changeover switch is in the intermediate position, in accordance with an embodiment of the present invention.

Fig. 3 discloses a state in which the interlocking means of the changeover switch is in a state in which the common side operating mechanism is closed, according to an embodiment of the present invention.

Fig. 4 discloses a state in which the interlocking means of the changeover switch is in the closed state of the standby side operating mechanism according to an embodiment of the present invention. detailed description

It is difficult to install and debug in the prior art, and the work requires high precision (for example, the solution disclosed in the patent application No. 201 1 10161233.6), and the parts are subjected to large force and easily break the opening shaft. Defects of poor reliability (for example, the solution disclosed in the patent application No. 201 1 10308801 .0), the present invention is intended to provide a low-capacity installation and debugging, and the parts are less stressed, and are suitable for large-capacity transfer switch electrical appliances. Interlocking device.

The basic design idea of the invention is as follows: An interlocking device for a changeover switch, which is suitable for two sets of operating mechanisms arranged up and down, the interlocking device has two sets of link mechanisms arranged symmetrically up and down, each set of link mechanisms including a drive link , the follower link and the execution link. The interlock is mounted in the middle of the two sets of operating mechanisms of the transfer switch.

When the upper mechanism is closed, the active link of the upper link mechanism rotates with the main shaft of the upper mechanism, drives the driven link to move, the driven link drives the link to perform the link, and performs the opening of the link lowering mechanism. The half shaft, so that the lower mechanism can not be closed. When the upper mechanism is opened, the active link of the upper link mechanism drives the driven link to move, the driven link drives the link to move, and the link is released. The lower shaft of the mechanism is opened, and the lower mechanism resumes normal closing. Similarly, when the lower mechanism is closed, the active link of the lower link mechanism rotates with the main shaft of the lower mechanism to drive the driven link to move, the driven link drives the link to move, and the link is pressed to the upper mechanism. The half shaft is opened so that the upper mechanism cannot be closed. When the lower mechanism is opened, the active link of the lower link mechanism drives the driven link, the driven link drives the link to move, and the link releases the upper half of the upper mechanism, and the upper mechanism resumes normal closing.

The upper mechanism and the lower mechanism are respectively one of a common side operating mechanism and a standby side operating mechanism, and usually, the upper mechanism arranges a common side operating mechanism, and the lower mechanism arranges a standby side operating mechanism. The interlock allows mechanical interlocking between the common side power source and the backup side power source.

Referring to FIG. 1 to FIG. 4, the present invention discloses an interlocking device for a changeover switch. The changeover switch includes a common side operating mechanism 111 and a standby side operating mechanism 112. The interlocking device 100 includes: a common side active link 102 The common side driven link 104, the common side execution link 106, the standby side active link 107, the standby side driven link 105, and the standby side execution link 103 are used. The common side active link 102 is coupled to the main shaft of the conventional side operating mechanism 111 and moves with the spindle. The common side slave link 104 is coupled to the common side active link 102. The common side execution link 106 is connected to the common side driven link 104, the common side execution link 106 is mounted to the side plate of the standby side operating mechanism 112, and the common side execution link 106 is wound around the side plate of the standby side operating mechanism 112. The second pivot point 109 rotates. The backup side active link 107 is coupled to the spindle of the standby side operating mechanism 112 and moves with the spindle. The backup side slave link 105 is connected to the standby side active link 107. The spare side execution link 103 is connected to the spare side driven link 105, the spare side execution link 103 is attached to the side plate of the common side operating mechanism 111, and the spare side execution link 103 is wound around the side plate of the common side operating mechanism 111. The first pivot point 110 rotates.

In one embodiment, when the common side operating mechanism 111 is closed, the common side active link 102 moves with the main shaft of the common side operating mechanism 111 to drive the common side driven link 104 to be moved by the common side driven link 104. The common side execution link 106 rotates around the second fulcrum 109 on the side plate of the standby side operating mechanism 112 and presses against the spare side opening half shaft 108 of the standby side operating mechanism 112, preventing the standby side operating mechanism 112 from closing. When the common side operating mechanism 111 is opened, the common side active link 102 is reset with the spindle movement of the common side mechanism 111, and is driven by the common side driven link 104. The common side execution link 106 is reset, the standby side opening half shaft 108 of the standby side operating mechanism 1 12 is released, and the standby side operating mechanism 1 12 can be normally closed.

The common side active link 102 has a circular arc shape, the common side driven link 104 has a folded rod shape, and the common side execution link 106 has a bifurcated shape, a common side active link 102, a common side driven link 104, and a common The side execution links 106 are sequentially connected to constitute a multi-link mechanism. The common side operating mechanism 1 1 1 is generally arranged as an upper mechanism, so that the common side active link 102, the common side driven link 104, and the usual side execution link 106 are arranged in order from the top to the bottom.

In one embodiment, when the standby-side operating mechanism 1 12 is closed, the backup-side active link 107 moves with the spindle of the standby-side operating mechanism 12 to drive the standby-side driven link 105 to move, and the standby-side driven link The 105 drive backup side execution link 103 rotates around the first fulcrum 1 10 of the side plate of the common side operating mechanism 1 1 1 and presses the common side opening half shaft 101 of the common side operating mechanism 1 1 1 to prevent the common side operation. The mechanism 1 1 1 is closed. When the standby-side operating mechanism 1 12 is opened, the standby-side active link 107 is reset with the spindle movement of the standby-side operating mechanism 12, and the standby-side driven link 105 drives the standby-side execution link 103 to reset, releasing the common-side operating mechanism. The common side opening half shaft 101 of 1 1 1 , the common side operating mechanism 1 1 1 can be normally closed.

The standby side active link 107 has a circular arc shape, the standby side driven link 105 has a folded rod shape, and the spare side execution link 103 has a bifurcated shape, the standby side active link 107, the standby side driven link 105 and the standby The side execution links 103 are sequentially connected to constitute a multi-link mechanism. The standby side operating mechanism 1 12 is generally arranged as a lower mechanism, and thus the spare side active link 107, the standby side driven link 105, and the spare side execution link 103 are arranged in order from the bottom to the top.

The interlock device 100 is installed at a gap between the common side operating mechanism 1 1 and the standby side operating mechanism 12.

With continued reference to Figures 1 through 4, Figures 1 through 4 disclose interlocking devices for transfer switches in accordance with an embodiment of the present invention. 1a and 1b disclose a state in which an interlock of a transfer switch is mounted between two operating mechanisms according to an embodiment of the present invention. 2 to FIG. 4 disclose the case where the interlocking device is in different working states when the transfer switch is in different working positions, wherein the interlocking device of FIG. 2 is in an initial state, and the changeover switch is in the intermediate position. Figure 3 shows the interlocking device in the state where the common side operating mechanism is closed, and Figure 4 discloses the interlocking device. The state in which the standby side operating mechanism is closed.

The interlocking device 100 of the changeover switch includes an upper portion and a lower portion having a symmetrical structure, and the interlocking device 100 is mounted to the two operating mechanisms of the changeover switch, the intermediate side of the common side operating mechanism 111 and the standby side operating mechanism 112. As shown in Figs. 1a and 1b, the interlocking device 100 is symmetrically mounted at an intermediate gap of the operating mechanism of the changeover switch. The common side operating mechanism 111 serves as an upper mechanism and a standby side operating mechanism 112 as a lower mechanism.

The upper link mechanism, i.e., the common side active link 102 in the conventional side link mechanism, is welded to the main shaft of the conventional side operating mechanism 111, and the common side active link 102 has a circular arc shape. The conventional side driven link 104 is designed to have a specific shape, such as a folded bar shape, and is coupled to the conventional side active link 102. The normal side execution link 106 is connected to the common side slave link 104. The active link, the driven link and the execution link of the common side are sequentially arranged from top to bottom to form a multi-link mechanism.

When the upper mechanism, that is, the common side operating mechanism 111 is closed, the common side active link 102 moves with the main shaft of the common side operating mechanism 111, and the common side active link 102 drives the common side driven link 104 to move, and the common side driven link is used. The lever 104 drives the common side execution link 106 to rotate around the lower mechanism, that is, the second pivot 109 on the standby side operating mechanism 112, and the common side execution link 106 presses against the standby side opening half shaft 108 of the standby side operating mechanism. The standby side operating mechanism 112 cannot be closed, as shown in FIG. When the upper mechanism, that is, the common side operating mechanism 111 is opened, the common side active link 102 is reset with the spindle movement of the common side operating mechanism 111, and the linkage of the multi-link mechanism finally causes the common side execution link 106 to be reset and released. The spare side opens the axle shaft 108, and thereafter the standby side operating mechanism 112 can be normally closed.

The lower link mechanism, i.e., the spare side active link 107 in the standby side link mechanism, is welded to the main shaft of the standby side operating mechanism 112, and the standby side active link 107 has a circular arc shape. The backup side driven link 105 is designed to have a specific shape such as a folded rod shape and is connected to the spare side active link 107. The standby side execution link 103 is connected to the standby side slave link 105. The active link, the driven link and the execution link on the standby side are sequentially arranged from bottom to top to constitute a multi-link mechanism.

When the lower mechanism, that is, the standby side operating mechanism 112 is closed, the standby side active link 107 moves with the spindle of the standby side operating mechanism 112, and the standby side active link 107 drives the standby side driven link 105 to move, and the standby side is driven. The rod 105 drives the spare side execution link 103 to be wound around the upper mechanism, that is, The first fulcrum 1 10 on the side operating mechanism 1 1 1 rotates, and the standby side execution link 103 presses the common side opening half shaft 101 of the common side operating mechanism, so that the common side operating mechanism 1 1 1 cannot be closed. Figure 4 shows. When the lower mechanism, that is, the standby side operating mechanism 1 12 is opened, the standby side active link 107 is reset with the spindle movement of the standby side operating mechanism 1 12, and the interlocking of the multiple side linkage mechanism finally causes the standby side execution link 103 to be reset. , the common side opening half shaft 101 is released, and then the common side operating mechanism 1 1 1 can be normally closed.

When the common side operating mechanism and the standby side operating mechanism are both in the open state, the transfer switch is in the intermediate position, and the interlocking device is in the initial position, as shown in FIG. When the power supply on either side is closed, the other side of the power supply cannot be closed because its split half shaft is pressed.

The interlocking device of the changeover switch of the invention has the advantages of simple structure, safety and reliability, small occupied space, and driving the interlocking rod through the rotation of the operating mechanism main shaft to prevent simultaneous switching of the common side power source and the standby side power source, which is easy to realize without increasing the product volume. In this case, the mechanical interlocking of the two mechanisms can be reliably achieved.

The above embodiments are provided to those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept. The scope of the invention is not limited by the embodiments described above, but should be the maximum range of the innovative features mentioned in the claims.

Claims

Claim

An interlocking device for a changeover switch, characterized in that: the changeover switch comprises a common side operating mechanism and a standby side operating mechanism, the interlocking device comprising:

Common side active connecting rod, connected to the main shaft of the common side operating mechanism and moving with the main shaft; common side driven connecting rod, connected to the common side active connecting rod;

The common side execution link is connected to the common side driven link, the common side execution link is mounted on the side plate of the standby side operating mechanism, and the common side execution link rotates around the second pivot point on the side plate of the standby side operating mechanism. ;

The standby side active link is connected to the main shaft of the standby side operating mechanism and moves with the main shaft; the standby side driven link is connected to the standby side active link;

The standby side execution link is connected to the standby side driven link, the standby side execution link is mounted on the side plate of the common side operating mechanism, and the standby side performs the link rotation around the first pivot point on the side plate of the common side operating mechanism .

2. The interlocking device of the changeover switch according to claim 1, wherein when the common side operating mechanism is closed, the common side active link moves with the main shaft of the common side operating mechanism to drive the side plate of the common structure. The second pivot point rotates and presses the spare side opening half shaft of the standby side operating mechanism to prevent the standby side operating mechanism from closing.

3. The interlocking device of the changeover switch according to claim 2, wherein when the common side operating mechanism is opened, the common side active link is reset with the spindle movement of the common side mechanism, and is driven by the common side driven link. The common side performs the link reset, releases the spare side opening half shaft of the standby side operating mechanism, and the standby side operating mechanism can be normally closed.

4. The interlocking device of the changeover switch according to claim 3, wherein the common side active link has a circular arc shape, and the common side driven link has a folded rod shape, and the common side performs the connection. The rod is bifurcated, and the common side active link, the common side driven link and the common side execution link are sequentially connected to form a multi-link mechanism.

5. The interlocking device of the changeover switch according to claim 4, wherein the common side active link, the common side driven link, and the common side execution link are arranged in order from the top to the bottom.

6. The interlocking device of the changeover switch according to claim 1, wherein when the standby side operating mechanism is closed, the standby side active link moves with the spindle of the standby side operating mechanism to drive the side plate of the standby structure. The first point rotates and presses the common side opening half shaft of the common side operating mechanism to prevent the common side operating mechanism from closing.

7. The interlocking device of the changeover switch according to claim 6, wherein when the standby side operating mechanism is opened, the standby side active link 7 is reset with the spindle movement of the standby side operating mechanism, and the standby side is connected by the standby side. The rod drive standby side performs the link reset, releasing the common side opening half shaft of the common side operating mechanism, and the common side operating mechanism can be normally closed.

8. The interlocking device of the changeover switch according to claim 7, wherein the standby side active link has a circular arc shape, the standby side driven link has a folded rod shape, and the spare side execution link has a bifurcated shape. The standby side active link, the standby side driven link and the spare side execution link are sequentially connected to form a multi-link mechanism.

9. The interlocking device of the changeover switch according to claim 7, wherein the standby side active link, the standby side driven link, and the standby side execution link are arranged in order from the bottom to the top.

10. The interlocking device of the changeover switch according to claim 1, wherein said interlocking The lock device is installed at a gap between the common side operating mechanism and the standby side operating mechanism,