CN114388283A

CN114388283A - Bypass type dual-power automatic transfer switch

Info

Publication number: CN114388283A
Application number: CN202210087404.3A
Authority: CN
Inventors: 管瑞良; 沈惠新; 顾怡文
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-04-22
Anticipated expiration: 2042-01-25
Also published as: CN114388283B

Abstract

A bypass type dual-power automatic transfer switch comprises a drawing frame, a first switch body and a second switch body which are overlapped up and down, a transmission device for driving the corresponding switch bodies to move in the drawing frame respectively is arranged between each switch body and the drawing frame, a locking device is also arranged between each switch body and the drawing frame, the locking device is associated with the opening and closing state of the corresponding switch body, when the corresponding switch bodies are in a closing state, the corresponding transmission devices are locked to prevent the switch bodies from moving in the drawing frame, when the switch bodies corresponding to the switch bodies are in the opening state, the corresponding transmission devices are unlocked, and a connecting mechanism is arranged between the two locking devices, so that when one of the first switch body and the second switch body is in the opening state, the corresponding locking device of the switch body drives another locking device through the connecting mechanism to lock the transmission device of the other switch body. Ensure the accuracy and reliability of the switch action and improve the safety of the user operation.

Description

Bypass type dual-power automatic transfer switch

Technical Field

The invention belongs to the technical field of low-voltage appliances, and particularly relates to a bypass type dual-power automatic transfer switch.

Background

In the field of electrical equipment technology, Automatic Transfer Switches (ATSE) are used to provide uninterruptible power to a load, ensuring continuity of power supply. Although the conventional ATSE can realize the conversion between two power supplies so as to meet the requirement of power supply stability, when the ATSE has a fault, short-time power-off maintenance has to be carried out, so that the continuity of power supply is influenced correspondingly. In order to guarantee the continuity of power supply of the power supply, namely, the continuous power supply can be carried out when the ATSE has a fault, an alternative conversion system is formed by two sets of conversion switch appliances, so that when one set of conversion switch appliance has a fault, the other set of conversion switch appliance can be switched to the other set of conversion switch appliance in time, namely, the other set of conversion switch appliance guarantees the power supply, and the positive significance is achieved for guaranteeing the uninterrupted continuous power supply of important loads. However, when two sets of automatic transfer switches are provided, the switch body, especially the switch body of the bypass type transfer switch, is pulled out in the self-closing state to generate the live operation, and meanwhile, the situation that the two sets of transfer switch appliances are simultaneously powered off often occurs, which is disadvantageous to the accuracy and reliability of the switching action and the safety of the user operation.

Disclosure of Invention

The invention aims to provide a bypass type dual-power automatic transfer switch which can prevent a switch body from being drawn out in a self closing state and can avoid the situation that two switches are simultaneously powered off so as to ensure the accuracy and reliability of the switching action and improve the safety of user operation.

The invention aims to accomplish the task by providing a bypass type dual-power automatic transfer switch which comprises a drawing frame, a first switch body and a second switch body which are superposed up and down, wherein a transmission device for driving the corresponding switch bodies to move in the drawing frame is arranged between each switch body and the drawing frame, a locking device is also arranged between each switch body and the drawing frame, the locking device is associated with the opening and closing state of the corresponding switch body, the corresponding transmission device is locked to prevent the switch bodies from moving in the drawing frame when the corresponding switch bodies are in the closing state, the locking of the corresponding transmission device is released when the corresponding switch bodies are in the opening state, and a connecting mechanism is arranged between the two locking devices, so that when one of the two switch bodies of the first switch body and the second switch body is in the opening state, the corresponding locking device of the switch body drives another locking device through the connecting mechanism to lock the transmission device of the other switch body.

In a specific embodiment of the invention, the transmission device comprises a handle transmission shaft which is arranged on the drawer frame along the moving direction of the switch body and enables the switch body to move in the drawer frame through the rotation of the handle transmission shaft; the locking device comprises a driving sliding plate, an interlocking lever driving piece, a push plate and a locking plate, wherein the driving sliding plate is arranged on the drawer frame in a sliding mode along the superposition direction of the two switch bodies, the interlocking lever driving piece is arranged on the drawer frame in a rotating mode, the push plate is provided with a driving plate and a pushing plate, the locking plate is arranged on the drawer frame in a sliding mode along the radial direction of a handle transmission shaft, the driving plate is arranged on the drawer frame in a rotating mode in a horizontal state and matched with the locking plate, the pushing plate extends in a longitudinal state and is matched with the driving sliding plate and the interlocking lever driving piece, the driving sliding plate corresponding to the first switch body and the interlocking lever driving piece corresponding to the second switch body are connected through an interlocking lever in a connecting mechanism, the interlocking lever driving piece corresponding to the first switch body and the driving sliding plate corresponding to the second switch body are connected through an interlocking lever in the connecting mechanism, and the driving sliding plate is driven by the switching action of one switch body corresponding to the driving sliding plate between the closing state and the opening state The interlocking lever is transmitted to an interlocking lever driving piece corresponding to the other switch body through the interlocking lever so as to enable the interlocking lever driving piece to move between a lever far position and a lever pushing position; corresponding to the same switch body, when the interlocking lever driving piece is positioned at the lever far position, if the driving sliding plate is positioned at the sliding plate separating position, the action on the pushing plate is removed, the driving plate acts on the locking plate, so that the locking plate is positioned at the unlocking position outside the rotating track of the handle transmission shaft of the switch body to remove the blockage of the rotation of the handle transmission shaft, if the driving sliding plate is positioned at the sliding plate driving position, the driving sliding plate acts on the pushing plate, the driving plate acts on the locking plate, so that the locking plate is positioned at the locking position inside the rotating track of the handle transmission shaft of the switch body to block the rotation of the handle transmission shaft; corresponding to the same switch body, when the interlocking lever driving piece is positioned at the lever pushing position, the interlocking lever driving piece acts on the pushing plate, the driving plate acts on the locking plate, and the locking plate is positioned at the locking position in the rotating track of the handle transmission shaft of the switch body to block the handle transmission shaft from rotating.

In another specific embodiment of the present invention, the drawer frame includes a drawer seat corresponding to the first switch body, another drawer seat corresponding to the second switch body and having the same structure as the drawer seat, and a pair of drawer side plates, the first switch body and the second switch body have the same structure, the two drawer seats are stacked, the pair of side plates are respectively fixed with the two drawer seats and respectively disposed at two sides of the two drawer seats, the drawer seat comprises a bottom plate, a left side plate and a right side plate, the transmission devices are arranged in the corresponding drawer seats respectively, the driving sliding plates are arranged on one sides of the right side plates of the corresponding drawer seats towards the left side plate, the interlocking lever driving pieces are arranged on one sides of the right side plates and the left side plates of the corresponding drawer seats, the driving plate is arranged at one end, facing the right side plate, of the bottom plate, and the pushing plate is formed by upwards folding and unfolding one end, facing the right side plate, of the driving plate in a longitudinal state.

In another specific embodiment of the present invention, the locking plate includes a driving plate, a locking plate body and an elastic member, the driving plate is slidably engaged with an end of the locking plate body facing the right side plate, the driving plate is engaged with the driving plate, the elastic member is connected between the driving plate and the locking plate body, the driving plate drives the driving plate and the elastic member pulls the locking plate body to move when the driving plate drives the locking plate to slide from the unlocking position to the locking position; and in the process that the driving plate drives the locking plate to slide from the locking position to the unlocking position, the driving plate drives the transmission piece, and then the transmission piece pushes the locking plate body to act.

In a further specific embodiment of the present invention, the driving plate includes a sliding plate and a driving plate, the sliding plate and the driving plate are integrally formed with each other, and the sliding plate is parallel to the locking plate body, the driving plate is formed by folding and unfolding a central position of a bottom portion of the sliding plate toward the locking plate body, a housing mounting surface is formed by folding and unfolding a side of the bottom plate toward the locking plate body, a housing mounting surface guide post is disposed on the housing mounting surface and a side toward the bottom plate, a locking plate body sliding groove is formed in the locking plate body, the housing mounting surface guide post is accommodated in the locking plate body sliding groove to guide sliding of the locking plate body relative to the housing mounting surface, a driving plate guide is disposed on the locking plate body and at an end toward the driving plate, the transmission piece guide piece is positioned on the locking plate body after penetrating through the transmission piece guide piece sliding groove and guides the sliding of the transmission piece, and a driving column is fixed on the transmission bottom plate; a driving plate pivot is provided on the base plate and at a position corresponding to the driving plate; the driving plate is provided with a pivot hole and a driving sliding groove, the pivot hole is in pivot fit with the pivot shaft of the driving plate, and the driving sliding groove is matched with the driving column on the transmission bottom plate.

In yet another specific embodiment of the present invention, a handle operation through hole is formed on the locking plate body, a locking plate is disposed on a side of the locking plate body facing away from the slider and at a position corresponding to the handle operation through hole, and the locking plate has a locking tongue protruding into one end of the handle operation through hole; the locking plate comprises a locking plate body, a handle transmission shaft and a handle operation through hole, wherein the locking plate body is provided with a locking tongue, the handle transmission shaft is inserted and matched with the handle operation through hole, limiting grooves are uniformly distributed on the circumferential surface of the handle transmission shaft at intervals, the limiting grooves extend in an axial state parallel to the handle transmission shaft, when the locking plate body is located at a locking position, the handle transmission shaft is located at one end, provided with the locking tongue, of the handle operation through hole, and the locking tongue is inserted into the limiting grooves.

In a more specific embodiment of the present invention, the driving slide plate is provided with a slide plate driving boss, a driving end surface and a disengaging end surface are sequentially formed on one side surface of the pushing plate from top to bottom along the height direction of the automatic transfer switch, and the disengaging end surface is formed by a transition end surface which is concavely arranged on the driving end surface; when the switch body is switched on, the driving sliding plate is located at a sliding plate driving position far away from the bottom plate, the sliding plate driving boss acts on the driving end face, and when the switch body is switched off, the driving sliding plate is located at a sliding plate separation position near the bottom plate, and the sliding plate driving boss acts on the separation end face.

In a further specific embodiment of the present invention, a driving slide plate sliding groove is formed in the driving slide plate, a driving slide plate guide post is disposed on the left side of the right side plate and at a position corresponding to the driving slide plate sliding groove, the driving slide plate guide post is accommodated in the driving slide plate sliding groove to guide the driving slide plate, a driving groove is further formed in a transverse state in an upper portion of the driving slide plate, an opening is formed at one end of the driving groove facing the housing mounting surface, and a limit boss is protruded at the upper portion corresponding to the opening; each switch body comprises an operating mechanism and a contact system, the operating mechanism comprises a main shaft, the contact system comprises a movable contact driven by the main shaft to rotate and a pair of static contacts symmetrically arranged on two sides of the movable contact, a rocker mechanism is arranged on the main shaft and comprises a first connecting rod and a second connecting rod, the center of the first connecting rod is sleeved on the main shaft, one end of the second connecting rod is connected with one end of the first connecting rod, a connecting rod driving boss is arranged at the other end of the second connecting rod, when the first switch body is switched on, the movable contact of the contact system is closed with one of the static contacts, the first connecting rod and the second connecting rod are in a zigzag shape, so that the rocker mechanism is in a folded state, the connecting rod driving boss is stopped by the limit boss, so that the switch body cannot enter the drawer seat from the outside of the drawer seat, when the switch body is switched off, the movable contact of the contact system is located at the middle position separated from the pair of fixed contacts, the first connecting rod and the second connecting rod are linearly unfolded to enable the rocker mechanism to be in an extension state, the connecting rod driving boss is matched with the driving groove to allow the switch body to enter the drawer seat from the outside of the drawer seat, and after the switch body enters the drawer seat, the connecting rod driving boss pushes the upper wall surface of the driving groove to enable the driving sliding plate to move from the sliding plate separation position to the sliding plate driving position in the process of switching-off to switching-on actions of the switch body.

In yet a more specific embodiment of the present invention, one end of the interlocking lever driving piece is provided with an interlocking boss, and the other end is provided with a lever driving boss which penetrates through the right side plate and extends to the left side of the right side plate; a slide plate interlocking boss extending to the right side of the right side plate is further arranged on the driving slide plate; the lever driving boss on each interlocking lever driving piece is matched with the pushing plate of the pushing plate corresponding to the lever driving piece, and the interlocking boss of the interlocking lever driving piece arranged corresponding to one switch body is connected with the sliding plate interlocking boss of the driving sliding plate arranged corresponding to the other switch body through one interlocking lever in the connecting mechanism.

In yet another specific embodiment of the present invention, when one of the first switch body and the second switch body is in the on position, the driving slide plate corresponding to the one switch body in the on position is in the slide plate driving position, and an interlocking lever in the connecting mechanism drives an interlocking boss of an interlocking lever driving member corresponding to the other switch body and makes the lever driving boss far away from a driving end face on a pushing plate of the pushing plate corresponding to the other switch body; when one of the first switch body and the second switch body is in the opening position, the driving sliding plate corresponding to the one switch body in the opening position is in the sliding plate disengaging position, and one interlocking lever in the connecting mechanism drives the interlocking boss of the interlocking lever driving piece corresponding to the other switch body and enables the lever driving boss to push the driving end face on the pushing plate of the push rod corresponding to the other switch body.

According to the technical scheme provided by the invention, the locking device is additionally arranged, so that the situation that the first switch body and the second switch body are powered off simultaneously can be avoided while the switch bodies are pulled out in a switching-on state, the accuracy and the reliability of switching action are ensured, and the safety of user operation is improved.

Drawings

Fig. 1 is a schematic view of a bypass type automatic transfer switch of the present invention.

Fig. 2 is a schematic view of a switch body and a drawer base thereof according to the present invention.

Fig. 3 is an overall structural view of the drawer base shown in fig. 2.

Fig. 4 is an exploded view of the drawer base shown in fig. 2 and 3.

Fig. 5 is a structural view of the bottom plate and the right side plate shown in fig. 2 and 3.

Fig. 6 is a detailed structural view of the right side plate shown in fig. 5.

Fig. 7 is a detailed structural view of the driving slider shown in fig. 5 and 6.

Fig. 8a is a perspective view of the restricting member shown in fig. 5 and 6.

Fig. 8b is a schematic front view of fig. 8 a.

Fig. 9 is a block diagram of the interlock lever actuator of fig. 6.

Figure 10 is a schematic view of the interlock plate shown in figures 5 and 6.

Fig. 11 is a right side schematic view of the left side plate.

Fig. 12 is an exploded view of fig. 11.

Fig. 13 is a structural view of a bottom plate of the drawer base.

Fig. 14 is an exploded view of the bottom plate of the drawer base.

Fig. 15 is a detailed structural view of the lock plate shown in fig. 5, 13, and 14.

Fig. 16 is an exploded view of fig. 15.

FIG. 17 is a detailed block diagram of the drive strap shown in FIGS. 14-16.

Figure 18a is a block diagram of one embodiment of the pusher plate shown in figures 5, 13 and 14.

Figure 18b is a block diagram of another embodiment of the pusher plate shown in figures 5, 13 and 14.

FIG. 19 is a schematic view of the mating of the drive slide, push plate and lock plate.

Fig. 20 is a perspective view of the switch body with the mask removed.

Fig. 21 is an exploded view of the operating mechanism of the switch body.

FIG. 22 is a schematic view of the handle receiving tube and handle.

Fig. 23 is a perspective view of the drawer frame.

Fig. 24 is a schematic view of a switch body drawn out of a drawer frame.

Detailed Description

In order to clearly understand the technical spirit and the advantages of the present invention, the applicant below describes in detail by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in material, should be considered as the technical scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the position state shown in fig. 1 unless otherwise noted, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

The bypass type dual-power automatic transfer switch comprises a drawing frame 300, a first switch body 201 and a second switch body 202 which are overlapped up and down, wherein a transmission device 104 for driving the corresponding switch bodies to move in the drawing frame is arranged between each switch body and the drawing frame 300, the bypass type dual-power automatic transfer switch is characterized in that a locking device 1 is also arranged between each switch body and the drawing frame 300, the locking device 1 is associated with the switching-on and switching-off state of the corresponding switch body, the corresponding transmission device 104 is locked to prevent the switch bodies from moving in the drawing frame 300 when the corresponding switch body is in the switching-on state, the corresponding transmission device 104 is unlocked when the corresponding switch body is in the switching-off state, a connecting mechanism 301 is arranged between the two locking devices 1, so that when one of the two switch bodies of the first switch body 201 and the second switch body 202 is in the switching-off state, the locking device 1 corresponding to the switch body drives another locking device 1 through the connecting mechanism 301 to lock the transmission device 104 of another switch body.

When one of the switch bodies is in a closed state, the locking device 1 corresponding to the switch body drives the locking device 1 corresponding to the other switch body to act through the connecting mechanism 301, so that the action chain of the locking device 1 corresponding to the one switch body on the transmission device 104 of the other switch body is disconnected, namely, the locking device 1 corresponding to the one switch body cannot determine whether the transmission device 104 of the other switch body is locked or not through the connecting mechanism 301 and the locking device 1 corresponding to the other switch body, and the locking or not of the transmission device 104 of the other switch body is related to the opening and closing state of the other switch body.

Referring to fig. 1 to 6 and 23 to 24, the bypass type automatic transfer switch actually bypassing each other shown in fig. 1 of the present embodiment includes a drawer frame 300 and two switch bodies stacked up and down, that is, the first switch body 201 and the second switch body 202, where the drawer frame 300 includes a drawer seat 100 corresponding to the first switch body 201, another drawer seat corresponding to the second switch body 202, and a pair of drawer side plates 302, the first switch body 201 and the second switch body 202 are identical in structure, and hereinafter, the switch body 200 is also referred to as the switch body 200, the two drawer seats are identical in structure, hereinafter, the drawer seat 100 is also referred to as the drawer seat, the two drawer seats are stacked up and down, and the pair of side plates are respectively fixed to the two drawer seats and are respectively disposed at two sides of the two drawer seats. The drawer base 100 includes a bottom plate 101, a left side plate 102, a right side plate 103, and a transmission 104 for driving the switch body 200 to move in the drawer base 100, wherein the transmission 104 includes a handle transmission shaft 105 (fig. 5), the handle transmission shaft 105 is disposed on the bottom plate 101 along the moving direction of the switch body 200, and the switch body 200 is moved in the drawer base 100 by the rotation of the handle transmission shaft 105.

The technical key points of the technical scheme provided by the invention are as follows: the drawer base 100 is provided with a locking device 1, the locking device 1 comprises a driving member 11, a locking plate 12 and a push plate 13, the driving member 11 is disposed on the side of the right side plate 103 facing the left side plate 102, the locking plate 12 and the push plate 13 are disposed on the bottom plate 101, the driving member 11 is driven by the switching action of the switch body 200 between the closed state and the open state and has a first position corresponding to one state of the switch body 200 and a second position corresponding to the other state of the switch body 200, when the driving member 11 is at the first position, the driving member 11 acts on the push plate 13 and acts on the locking plate 12 by the push plate, so that the locking plate 12 is located at the locking position in the rotation track of the handle transmission shaft 105 to block the rotation of the handle transmission shaft 105, and when the driving member 11 is located at the second position, the driver 11 acts on the push plate 13 and the push plate 13 acts on the lock plate 12, so that the lock plate 12 is positioned at an unlock position outside the rotation locus of the handle transmission shaft 105 and the rotation of the handle transmission shaft 105 is released from being blocked.

Fig. 1 shows a connecting mechanism 301 for connecting the respective locking devices 1 of the first switch body 201 and the second switch body 202, which is composed of two interlocking levers, which may be rigid levers or cables; fig. 2 shows an indication window 203 and a manual operation tool 204 of the switch body 200 (the first switch body 201 and the second switch body 202 each have the indication window 203 and the manual operation tool 204).

The drawer base 100 of the present invention, as shown in fig. 4, includes a bottom plate assembly, a left plate assembly, a right plate assembly, a top cover 107 and a bottom chassis assembly 108.

As shown in fig. 2 and 5, the bottom plate assembly includes a bottom plate 101, a transmission device 104 and a housing assembly 106, the periphery of the bottom plate 101 is respectively turned up to form a left side plate mounting surface, a right side plate mounting surface, a housing mounting surface 1011 and a bottom frame mounting surface, the housing assembly 106 is provided with a handle operation hole 10111, a handle storage hole 10112, a three-position indication hole 10113, a padlock hole 10114, a three-position unlocking hole and an interlocking shaft hole 10115, a housing mounting surface guide column 1012 (shown in fig. 14 and 19) to be mentioned below is arranged on the inner side surface of the housing mounting surface, and a handle operation through hole 10116 is arranged on the housing mounting surface 1011. A handle receiving tube 14 is fixed to the base plate 101, penetrates the locking plate 12, extends into the housing assembly 106, and is connected to the handle storage hole 10112.

Referring to fig. 22, a rubber packing mounting groove 141 is formed on a circumferential side wall of the handle accommodating tube 14, a rubber packing 142 is elastically deformed (expanded in a circumferential state) and then is inserted into the rubber packing mounting groove 141 from one end of the handle accommodating tube 14 to be contracted, when the handle is accommodated, the handle is inserted into the handle accommodating tube 14 through the handle storage hole 10112, and the contracted rubber packing 142 is inserted into the handle groove 143 of the handle to fix the handle in the accommodating tube.

The transmission device 104 is disposed on the bottom plate 101, and includes a screw transmission assembly 1041 disposed on the bottom plate 101 and a gear transmission assembly 1042 disposed between the left and

right side plates

102, 103, wherein the screw transmission assembly 1041 includes a carriage 10411 slidably disposed on the bottom plate 101, a handle transmission shaft 105 (i.e., a screw handle transmission shaft) rotatably disposed on the bottom plate 101 and arranged along a moving direction of the switch body, and a rotation rod 10412 rotatably disposed on the bottom plate 101 and extending between the left and right side plates, one end of the screw transmission assembly 1041 drives the sliding carriage 10411 to move, the other end of the screw transmission assembly extends into a handle operation through hole 10116 of the bottom plate housing mounting surface 1011, and limit slots 1051 (shown in fig. 19) are uniformly distributed on the circumferential surface of the other end of the screw transmission assembly 1041.

Referring to fig. 5, 18a and 18b, the push plate 13 is composed of a driving plate 131 and a pushing plate 132, and is formed into an L-shaped configuration, the driving plate 131 is rotatably disposed at one end of the bottom plate 101 facing the right side plate 103 in a horizontal state and is engaged with the locking plate 12, and the pushing plate 132 is composed of the driving plate 131 folded upward in a longitudinal state toward one end of the right side plate 103 and is engaged with the driving member 11; when the driving member 11 moves between the first position and the second position, the driving member 11 acts on the pushing plate 132, the driving plate 131 is driven by the pushing plate 132 to rotate, and the locking plate 12 is driven by the driving plate 131 to move along the handle transmission shaft 105 in the radial direction between the locking position and the unlocking position.

Referring to fig. 14 to 17 and fig. 19 in combination with fig. 5, the locking plate 12 includes a driving plate 121, a locking plate body 122 and an elastic member 123, the driving plate 121 is slidably engaged with one end of the locking plate body 122 facing the right side plate 103, the locking plate body 122 is engaged with the driving plate 131, the elastic member 123 is connected between the driving plate 121 and the locking plate body 122, the driving plate 131 drives the driving plate 121 and the elastic member 123 pulls the locking plate body 122 to operate when the driving plate 131 drives the locking plate 12 to slide from the unlocking position to the locking position; when the driving plate 131 drives the locking plate 12 to slide from the locking position to the unlocking position, the driving plate 131 drives the driving piece 121, and the driving piece 121 pushes the locking plate body 122 to operate. The locking plate body 122 is provided with a spring installation cavity 1229, and one end of the elastic element 123 is hung on the transmission piece 121, and the other end is hung on the locking plate body 122 and is located in the spring installation cavity 1229.

The aforementioned locking plate 122 is provided corresponding to the housing installation surface 1011 and the housing assembly 106: a handle operation through hole 1223 correspondingly disposed to the drawer seat handle operation hole 10111 and the handle operation through hole 10116, a three-position unlocking shaft movement hole 1225 (see fig. 2 and 15) communicated with the handle operation through hole 1223, a handle storage through hole 10112 correspondingly disposed to the drawer seat operation handle storage hole 10112, a three-position indication through hole 1224 correspondingly disposed to the three-position indication hole 10113 (shown in fig. 2) on the housing assembly 106, a three-position interlocking shaft through hole 1226, a padlock plate movement hole 1227 correspondingly disposed to the padlock hole 10114, and a locking plate body sliding groove 1221, wherein the locking plate body sliding groove 1221 and the housing mounting surface guide column 1012 (shown in fig. 14) on the locking plate mounting surface 1011.

Referring to fig. 3, 5 and 10, fig. 10 shows a specific structure of the interlocking plate 3, one end of the interlocking plate 3 is configured as an interlocking end 31, the other end is configured as a driving end 32, the middle part is configured as a pivoting section 33, and an interlocking boss 311 is further configured at the position of the interlocking end 31. Fig. 3 and 5 show the fitting of the interlock board 3 and the stopper 1033.

Referring to fig. 13 and referring to fig. 14 to 17, the driving plate 121 includes a sliding plate 1211 and a driving plate 1212, the sliding plate 1211 and the driving plate 1212 are integrally formed, the sliding plate 1211 is parallel to the locking plate body 122, the driving plate 1212 is formed by folding the bottom of the sliding plate 1211 from the center toward the locking plate body 122, the bottom plate 101 is folded toward the locking plate body 122 to form a housing installation surface 1011, the housing installation surface 1011 is formed on the housing installation surface 1011 and is provided on the bottom plate 101, the locking plate body 122 is provided with a locking plate body sliding slot 1221, the housing installation surface guiding column 1012 is accommodated in the locking plate body sliding slot 1221 to guide the sliding of the locking plate body 122 relative to the housing installation surface 1011, a driving plate guide 1222 (shown in fig. 16) is provided at the locking plate body 122 toward one end of the driving plate 121, a driving plate guide sliding groove 12111 (shown in fig. 17) is provided at the slide plate 1211, the driving plate guide 1222 is positioned on the locking plate body 122 after passing through the driving plate guide sliding groove 12111 and guides the sliding of the driving plate 121, and a driving column 12121 is fixed to the driving plate 1212.

As shown in fig. 18a, 18b and 19, a driving plate pivot 1015 is provided on the base plate 101 at a position corresponding to the driving plate 131; the driving plate 131 is provided with a pivot hole 1311 and a driving sliding groove 1312, the pivot hole 1311 is pivotally engaged with the driving plate pivot 1015, and the driving sliding groove 1312 is engaged with the driving post 12121 (shown in fig. 17) on the driving base plate 1212.

As shown in fig. 16, a handle operation through hole 1223 is provided in the locking plate body 122, a locking plate 1228 is provided on a side of the locking plate body 122 facing away from the slide 1211 and at a position corresponding to the handle operation through hole 1223, the locking plate 1228 has a locking tongue 12281, and the locking tongue 12281 protrudes into one end of the handle operation through hole 1223; the handle transmission shaft 105 is inserted into the handle transmission hole 1223, and the circumferential surface of the handle transmission shaft 105 has limiting grooves 1051 (shown in fig. 9) extending in parallel with the axial direction of the handle transmission shaft 105 and uniformly distributed at intervals, when the locking plate body 122 is located at the locking position, the handle transmission shaft 105 is located at one end of the handle transmission hole 1223 having the locking tongue 12281, and the locking tongue 12281 is inserted into the limiting groove 1051.

The action process is as follows:

referring to fig. 5 or 19, in the position state shown in fig. 5 or 19, when an external input drives the driving strap 121 to move through the driving shaft 12121, the driving strap 121 drives the locking plate 1228 and the locking tongue 12281 on the locking plate 1228 to lock the handle transmission shaft 105 through the elastic member 123 acting as a return spring, when the locking tongue 12281 is not aligned with the limiting groove 1051 on the handle transmission shaft 105, the locking tongue 12281 abuts against the outer circumferential surface of the handle transmission shaft 105 under the action of the elastic member 123, when the handle transmission shaft 105 rotates, the locking tongue 12281 is aligned with the limiting groove 1051 on the handle transmission shaft 105, and the locking tongue 81 is inserted into the limiting groove 1051 to lock the handle transmission shaft 105 under the action of the elastic member 123. When the handle transmission shaft 105 needs to be unlocked, the external input drives the transmission piece 121 to move leftward, and directly pushes the transmission piece guide 1222 on the locking plate body 122 through the transmission piece guide sliding slot 12111 of the transmission piece 121, so that the locking plate body 122 unlocks the handle transmission shaft 105 to reach the position state shown in fig. 5 or fig. 19.

Already mentioned above are: the bottom plate 101 is further pivotally connected with a push plate 13, the push plate 13 is in an "L" shape, i.e., in an L shape, the driving plate 131 is parallel to the bottom plate surface, the push plate 132 extends along the right side plate 103, and the driving plate 131 is provided with a driving sliding groove 1312 matched with a driving post 12121 on a bottom driving plate 1212 on the driving plate 121, so as to form a rocker slider structure with the locking plate 12.

As shown in fig. 18a and 19, the driving plate 131 is further provided with a stopper post fitting groove 1313, and the stopper post fitting groove 1313 is fitted with the stopper post 1013 on the bottom surface of the bottom plate 101.

Referring to fig. 5 to 7, 18a, 18b and 19, the driving member 11 includes a driving slide plate 111, the driving slide plate 111 is slidably disposed on the left side of the right side plate 103 along the height direction of the automatic transfer switch, a slide plate driving boss 1111 is disposed on the driving slide plate 111, a driving end surface 1321 and a disengaging end surface 1323 are sequentially formed on one side surface of the pushing plate 132 along the height direction of the automatic transfer switch from top to bottom, and the disengaging end surface 1323 is formed by a transition end surface 1322 being recessed on the driving end surface 1321; the switch body 200 includes a first switch body 201, the driving slide 111 is driven by the first switch body 201, and when the first switch body 201 is closed, the driving slide 111 is at a slide driving position away from the base plate 101, the slide driving protrusion 1111 acts on the driving end surface 1321, and when the first switch body 201 is opened, the driving slide 111 is at a slide disengaging position close to the base plate 101, and the slide driving protrusion 1111 acts on the disengaging end surface 1323.

A push plate return spring 1014 illustrated in fig. 19 is further provided between the push plate 13 and the base plate 101. When the cam surface on the push plate 132 is not stressed (the lever driving boss 1122 is disengaged from the driving end surface 1321 and the slide plate driving boss 1111 is at the disengagement end surface 1323, which will be mentioned later), the aforementioned push plate 13 rotates counterclockwise (as shown in fig. 19) under the action of the push plate return spring 1014, so as to drive the lock plate body 122 to move to the left to unlock the handle transmission shaft 105.

Referring to fig. 5 and 11 to 12, a left board guide rail 1021 is disposed on the left board 102 of the structure of the left board assembly, a right board guide rail 1031 is disposed on the right board 103 of the structure of the right board assembly, and a gear transmission assembly 1042, a driving member 11, and a left board shutter driving assembly 1022 and a right board shutter driving assembly 1032 are disposed on the left board assembly and the right board assembly, respectively. The guide rails are divided into an upper guide rail and a lower guide rail, the lower guide rail is used for sliding the switch body 200, the upper guide rail is used for preventing the switch body 200 from overturning in the sliding process, the upper guide rail and the lower guide rail are riveted on the side plates, and a space between the upper guide rail and the lower guide rail is formed into a guide column 2002 limiting groove used for limiting the switch body 200. The gear transmission assembly 1042 is linked with a rotating rod 10412 in a screw transmission assembly 1041 on the upper bottom plate of the drawer seat, and is matched with a driving shaft 2001 (see fig. 20) on the switch body through a guide plate on the gear transmission assembly 1042 to drive the switch body 200 to swing in and out along the guide rail. A drawer lock 1001 shown in fig. 11 is provided between the lower guide rail and the side plate (both the left side plate and the right side plate are provided with), and a driving end 10011 and a limiting end 10012 are provided thereon, the aforementioned driving end 10011 and limiting end 10012 are provided on both sides of a rotation center 10013 thereof, and are engaged with guide posts 2002 (shown in fig. 20) on the switch body 200, when one of the guide posts on the switch body is pressed against the driving end 10011, the limiting end 10012 on the drawer lock 1001 is tilted upward, by reasonably setting a guide post distance on the switch body (when one guide post presses the driving end 10011 of the lock, the other guide post is just blocked by the limiting end 10012 of the lock), the switch body 200 can be limited from being smoothly drawn out from the drawer base 100, and the pressing of the driving end 10011 by the guide post 2002 needs to be released by lifting the switch body 200 slightly upward, so that the drawer lock 1001 is reset by the reset spring 10014 shown in fig. 12, the switch body 200 can be withdrawn from the drawer base 100 at this time. The valve driving assembly is arranged on the rear side of the guide rail and comprises a sliding plate, a driving lever and a return spring, the sliding plate, the driving lever and the return spring are matched with a front-end guide post on the switch body, so that the switch body pushes the sliding plate to move upwards through the guide post in the process of shaking into the drawer seat, the driving lever is driven to lift the valve plate upwards, the plug jack is opened, and the main loop of the switch body and the main loop of the drawer seat can be smoothly butted. Two limiting shafts are respectively arranged on the left side plate and the right side plate of the drawer seat, and are used for an initial limiting column 1002 (matched with a limiting boss surface 104211 on a guide plate 10421 shown in fig. 4) and an in-place limiting column 1003 (matched with a limiting groove matching surface 104212 of a gear transmission assembly 1042) of the gear guide plate, so that the screw rod locking device is prevented from continuously acting to cause mechanism damage after the guide plate is in an acting position. The motion in-place limiting column 1003 is also matched with a limiting groove 2003 on the switch body, and in the butt joint process of the switch body and the chassis assembly 108 of the drawer seat, the motion in-place limiting shaft 1003 is inserted into the limiting groove 2003 on the switch body and is matched with a guide column 2002 on the switch body, so that the switch body is prevented from being turned over in the insertion process.

Referring to fig. 8a and 8b in conjunction with fig. 5, the right side plate 103 further comprises a limiting member 1033 symmetrically disposed on both sides of the right side plate guide rail 1031, an interlocking plate 3, and a driving member 11 located below the right side plate 103 and close to the bottom plate 101, which have been mentioned above: the driving member 11 includes a driving slide plate 111 and an interlocking lever driving member 112, the driving slide plate 111 is located on the inner side of the right side plate 103, i.e., the side facing the left side plate 102, and the interlocking lever driving member 112 is located on the outer side of the right side plate 103 (i.e., the side facing away from the left side plate 102). The aforementioned driving slide plate 111 is engaged with the link driving boss 201121 as a third driving shaft on the switch body 200; the limiting piece and the interlocking plate which are positioned below the guide rail are matched with the fourth driving shaft 2004; the restricting member and the interlocking plate located above the guide rail are engaged with the fifth driving shaft 2005.

Also shown in fig. 5 is a right side plate lower rail 1031a located below the right side plate rail 1031 of the right side plate 103; also shown in fig. 11 is a left side panel lower rail 1021a located below the left side panel rail 1021 of the left side panel 102, the aforementioned concept of rails may also be referred to as a guide.

Referring to fig. 7 and fig. 20 to fig. 21, a driving slide plate sliding groove 1112 is formed on the driving slide plate 111, a driving slide plate guide post 1113 is disposed on the left side of the right side plate 103 at a position corresponding to the driving slide plate sliding groove 1112, the driving slide plate guide post 1113 is accommodated in the driving slide plate sliding groove 1112 to guide the driving slide plate 111, a driving groove 1114 is further formed in the driving slide plate 111 at an upper portion thereof in a horizontal state, an opening is formed at an end of the driving groove 1114 facing the housing mounting surface 1011, and a limit boss 1115 is protruded at an upper portion corresponding to the opening; the first switch body 201 includes an operating mechanism and a contact system, the operating mechanism includes a main shaft, the contact system includes a movable contact driven by the main shaft to rotate and a pair of static contacts symmetrically disposed at two sides of the movable contact, a rocker mechanism 2011 is disposed on the main shaft, the rocker mechanism 2011 includes a first link 20111 centrally sleeved on the main shaft and a second link 20112 having one end connected to one end of the first link 20111, a link driving boss 201121 is disposed at the other end of the second link 20112, when the first switch body 201 is closed, the movable contact of the contact system and one of the static contacts are closed, the first link 20111 and the second link 20112 are zigzag to make the rocker mechanism 2011 in a folded state, the link driving boss 201121 is stopped by the limiting boss to make the first switch body 201 unable to enter the drawer base 100 from the outside of the drawer base 100, when the first switch body 201 is in an open state, the movable contact of the contact system is located at a middle position separated from a pair of fixed contacts, the first link 20111 and the second link 20112 are linearly unfolded to enable the rocker mechanism 2011 to be in an extended state, the link driving boss 201121 is matched with the driving groove 1114 to allow the first switch body 201 to enter the drawer base 100 from the outside of the drawer base 100, and when the first switch body 201 enters the drawer base 100, in a process that the first switch body 201 is opened from the open state to the closed state, the link driving boss 201121 pushes the upper wall surface of the driving groove 1114 to enable the driving sliding plate 111 to move from the sliding plate disengaging position to the sliding plate driving position.

The switch body 200 includes a second switch body 202, the structure of the second switch body 202 is the same as that of the first switch body 201, the driving member 11 of the locking device 1 further includes the above-mentioned interlocking lever driving member 112, the interlocking lever driving member 112 is rotatably disposed on the right side surface of the right side plate 103, and an interlocking boss 1121 is disposed at one end of the interlocking lever driving member 112, and a lever driving boss 1122 is disposed at the other end, the lever driving boss 1122 penetrates through the right side plate 103 and extends to the left side of the right side plate 103; a slide plate interlocking projection 1116 extending to the right side of the right side plate is further provided on the drive slide plate 111; the first switch body 201 and the second switch body 202 are respectively provided with the transmission device 104 and the locking device 1, the lever driving boss 1122 on each of the interlocking lever drivers 112 is matched with the pushing plate 132 of the pushing plate 13, and the interlocking boss 1121 of the interlocking lever driver 112 corresponding to the switch body 201 is connected with the slide plate interlocking boss 1116 of the driving slide plate 111 corresponding to the second switch body 202 through an interlocking cable; the interlock projection 1121 of the interlock lever actuator 112 provided corresponding to the second switch body 202 is connected to the slider interlock projection 1116 of the drive slider 111 provided corresponding to the first switch body 201 to interlock the wire cable.

When one of the first switch body 201 and the second switch body 202 is at the closing position, the driving slide plate 111 corresponding to the one switch body at the closing position is at the slide plate driving position, and the interlocking cable drives the lever driving boss 1122 of the interlocking lever driving member 112 corresponding to the other switch body and makes the lever driving boss 1122 be at the driving end surface 1321 of the pushing plate 132 of the pushing plate 13 corresponding to the other switch body; when one of the first switch body 201 and the second switch body 202 is in the open position, the driving slide plate 111 corresponding to the one switch body in the open position is in the slide plate disengaging position, and the interlocking cable drives the lever driving boss 1122 of the interlocking lever driving member 112 corresponding to the other switch body and causes the lever driving boss 1122 to push the driving end surface 1321 of the push plate 132 of the push rod 13 corresponding to the other switch body.

The drive sled 111 is provided with a drive sled return spring 1117 (shown in fig. 6) in addition to the drive sled runner 1112, the drive slot 1114, the limit boss 1115, the sled drive boss 1111, and the sled interlock boss 1116. The driving sliding plate 111 is mounted on the driving sliding plate guide post 1113 through the driving sliding plate sliding groove 1112, so that the driving sliding plate 111 can freely slide up and down, and when the driving sliding plate 111 is located below, the corresponding switch body is located at a brake separating position (original position); when the sliding plate is positioned above, the corresponding switch body is positioned at the switch-on position. The aforementioned slide grooves 1112 of the driving slide are arranged in parallel at three points, and a cavity for accommodating a return spring 1117 of the driving slide is provided between the slide grooves. The driving groove 1114 is engaged with a link driving boss 201121 as a third driving shaft of the switch body 200, the driving groove 1114 is perpendicular to the sliding direction of the driving slider 111 (corresponding to the insertion and extraction direction of the switch body) and opens toward the end of the insertion direction of the switch body, and the length of the driving groove 1114 is the distance from the separation position to the connection position of the switch body 200. A limit projection 1115 is provided above the opening end of the drive groove 1114, the limit projection 1115 is a flat surface extending in the sliding direction of the drive slider 111, and the length of the limit projection 1115 is longer than the moving distance of the third drive shaft 201121 as the switch body. The sliding plate driving bosses 1111 and the sliding plate interlocking bosses 1116 are located on two sides of the plane of the driving sliding plate 111, and the sliding plate driving bosses 1111 face the inside of the drawer base 100 and are close to the bottom plate 101 of the drawer base 100, and are engaged with the driving end surface 1321, the transition end surface 1322 and the disengaging end surface 1323 of the push plate 132 to convert the vertical sliding of the driving sliding plate 111 into the horizontal movement of the locking plate body 122. The sliding plate interlocking projection 1116 faces the outside of the drawer base 100 and extends out of the right side plate surface of the drawer base 100, a moving groove 1035 (shown in fig. 6) is correspondingly formed on the right side plate surface, and the end of the sliding plate interlocking projection 1116 extending out of the side plate is connected with a steel cable.

When the driving slide plate 111 is located at the lower side, a cavity 1036 (shown in fig. 5) is formed on the upper end surface of the driving slide plate, the stopper 1033 located below the guide rail, and the interlock plate 3, and is a space into which the driving shaft 2001 slides when the switch main body 200 is pushed.

The interlocking lever driving member 112 is pivotally connected to the outer side of the right side plate 103 of the drawer base 100, and includes an interlocking end and a driving end respectively disposed at two ends of the pivoting shaft, the interlocking end is provided with an interlocking boss 1121 facing the outer side of the drawer base, the interlocking boss 1121 and the sliding plate interlocking boss 1116 on the driving sliding plate 111 are disposed at the same side of the interlocking lever pivoting shaft 1123 (shown in fig. 6), a steel cable (interlocking rod) is connected to an end of the interlocking boss 1121, the driving end is provided with a lever driving boss 1122, and the driving boss 1122 extends into the inner wall of the side plate of the drawer base to be matched with the driving end surface 1321 of the pushing plate 132 on the pushing plate 13 (which may also be referred to as "pushing and swinging assembly", the same as the above and the following).

The aforementioned slide plate driving boss 1111 of the driving slide plate 111 and the lever driving boss 1122 of the interlocking lever driving member 112 both act on the same side surface of the push plate 132 of the push plate 13, and the aforementioned slide plate driving boss 1111 of the driving slide plate 111 and the lever driving boss 1122 of the interlocking lever driving member 112 are disposed up and down along the height direction of the same side surface of the push plate 132.

The action process is as follows:

in the bypass type automatic transfer switch shown in fig. 1, in which two automatic transfer switch bodies bypass each other, the locking device 1 of the present invention is designed to realize the aforementioned functions of the first set of interlock mechanism.

The structure of the second switch body 202 is the same as that of the first switch body 201, the first switch body 201 and the corresponding drawer seat are arranged at the lower part, the second switch body 202 and the corresponding drawer seat are arranged at the upper part, the locking device 1 has two sets, one set is arranged on the right side plate of the drawer seat corresponding to the first switch body 201, the other set is arranged on the right side plate of the drawer seat corresponding to the second switch body 202, the interlock projection 1121 of the interlock lever actuator 112 provided corresponding to the first switch body 201 is connected to the slide plate interlock projection 1116 of the slide plate actuator 11 provided corresponding to the second switch body 202 by an interlock cable, the interlock projection 1121 of the interlock lever actuator 112 provided corresponding to the second switch body 202 is connected to the slide plate interlock projection 1116 of the drive slide plate 111 of the actuator 11 provided corresponding to the first switch body 201 via an interlock cable (interlock lever) which is arranged in parallel on the outside of the right side plate of the drawer base.

The driving slide plate 111 on the drawer seat is at the lowest position (corresponding to the opening position of the switch body) under the action of the driving slide plate return spring 1117, at this time, the slide plate driving boss 1111 on the driving slide plate 111 is disengaged from the driving end surface 1321 of the pushing plate 132 of the pushing plate 13, the pushing plate 13 rotates counterclockwise under the action of the pushing plate return spring 1014, referring to fig. 19, the locking plate 12 is driven to move leftward through the driving slide groove 1312 on the pushing plate, the handle transmission shaft 105 is in an unlocked state, i.e., the handle is allowed to be inserted into the handle operation hole 10111 on the cover assembly 106 to be abutted against the end of the handle transmission shaft 105, the handle is rotated, and thus the handle transmission shaft 105 is rotated to drive the body switch 200 to move in the drawer seat.

When the second switch body 202 is in a normal closing state or a standby closing state, the link driving boss 201121 serving as the third driving shaft is driven by the operating mechanism, the rocker mechanism 2011 is in a folded state, i.e., in a state close to the rotation center of the output main shaft of the operating mechanism, and when the switch body 202 is pushed into the corresponding drawer seat 100 at this time, the link driving boss 201121 serving as the third driving shaft is limited by the limiting boss 1115 on the driving sliding plate 111 in the drawer seat 100 and cannot be pushed into the drawer seat 100.

When the second switch body 202 is opened, the link driving boss 201121 on the second switch body as a third driving shaft is driven by the operating mechanism, the rocker mechanism 2011 is in an extended state, i.e. the first link 20111 and the second link 20112 are substantially in a straight line, and at this time, the link driving boss 201121 is far away from the rotation center of the output spindle of the operating mechanism. When the second switch body 202 is pushed into the corresponding drawer seat 100, the connecting rod driving protrusion 201121 on the second switch body 202 is just inserted into the driving groove 1114 of the drawer seat sliding plate assembly.

When the second switch body 202 enters the drawer base 100, if the switch-on operation is performed, the link driving boss 201121 as the third driving shaft drives the driving slide plate 111 to move upward against the spring force, so that the slide driving boss 1111 on the driving slide plate 111 moves from the disengaging end surface 1323 of the push plate 13 to the driving end surface 1321, and drives the push plate 13 to rotate clockwise against the spring force, as shown in fig. 19, so that the locking plate 12 locks the handle transmission shaft 105, and at this time, the swing operation of the drawer base handle is limited, thereby prohibiting the user from pulling out under the switch-on condition of the second switch body 202, and improving the operation and installation performance.

Referring to fig. 9 in conjunction with fig. 1 to 3 and fig. 20 to 21, when the second switch body 202 is in a closed state (a normal power supply is closed or a standby power supply is closed), at this time, the driving slide plate 111 provided corresponding to the second switch body 202 side is located at the upper position, since the slide plate interlocking projection 1116 of the driving slide plate 111 and the interlocking projection 1121 of the interlocking lever actuator 112 provided corresponding to the first switch body 201 side are connected by the interlocking wire cable (lever), and therefore, due to the pulling force of the sled interlock projection 1116 on the drive sled 111 against the interlock projection 1121 on the interlock lever actuator 112, so that the link driving boss 1122 on the interlock lever 122 is located at a lower position in the driving boss circular arc groove 1037 (shown in fig. 6) on the right side plate 103, this position is clear of the actuation end surface 1321 on the push plate 132, which is a lever away position for interlocking the lever actuator 112. Therefore, in the closed state of the second switch body 202, the interlock lever driving member 112 provided corresponding to the first switch body 201 does not interfere with the push plate 13 provided corresponding to the first switch body 201, and at this time, whether the first switch body 201 can be swung in and out of the drawer base 100 or not is to be determined whether the first switch body 201 itself is in the closed state or the open state.

If the first switch body 201 is in a closing state at this time, the rocker mechanism 2011 inside the body is in a folded state, the connecting rod driving boss 201121 of the rocker mechanism drives the driving sliding plate 111 to be in an upper position, the sliding plate driving boss 1111 on the driving sliding plate 111 acts on a driving end face 1321 on the pushing plate 13 arranged corresponding to the first switch body 201, so that the pushing plate 13 rotates clockwise on the position of fig. 19, thereby driving the driving plate 121 to move rightwards, the driving plate 121 drives the lock tongue plate 1228 to slide rightwards through the elastic element 123 (tension spring), the lock tongue 12281 extends into the limiting groove 1051 on the handle transmission shaft 105, thereby locking the handle transmission shaft 105, blocking the rotation of the handle transmission shaft 105, and achieving the purpose that the rocker cannot be rotated in and out in the closing state.

When the first switch body 201 is opened, the rocker mechanism 2011 inside the first switch body is in an extended state, that is, in an unfolded state, so as to drive the driving sliding plate 111 to move to a lower position, the sliding plate driving boss 1111 on the driving sliding plate 111 enters the disengaging end surface 1323 from the driving end surface 1321 via the transition end surface 1322, so that the pushing plate 13 rotates counterclockwise, so as to drive the driving plate 121 to move leftward, the driving plate 121 pushes the driving plate guide 1222 on the locking plate body 122 through the sliding groove end surface on the driving plate 121, so as to drive the locking plate body 122 to move leftward, the locking tongue 12281 exits the limiting groove 1051, the locking of the handle transmission shaft 105 is released, the handle transmission shaft 105 is allowed to rotate, and therefore the first switch body 201 is allowed to rock in and out in the drawer base 100.

When the second switch body 202 is in the open state (the double-split position where the normal power supply and the standby power supply are both open), at this time, the driving slide plate 111 disposed on the side of the second switch body 202 is in the lower position, and the slide plate interlocking projection 1116 on the driving slide plate 111 and the interlocking projection 1121 on the interlocking lever driving member 112 disposed on the side of the first switch body 201 are connected by the interlocking cable (lever), so that the interlocking lever 122 is rotated by driving the interlocking projection 1121 on the interlocking lever driving member 112 by the slide plate interlocking projection 1116 on the driving slide plate 111, and the link driving projection 1122 thereon is located at the upper position in the circular arc groove 1037 (shown in fig. 6) of the driving projection on the right side plate 103, and at this position, the link driving projection 1122 acts on the driving end surface 1321 on the pushing plate 132 to serve as the lever action position of the interlocking lever driving member 112. The action of the link drive boss 1122 causes the drive plate 131 to rotate, eventually actuating the locking plate 12 to a locked position within the rotational trajectory of the handle drive shaft 105 to block rotation of the handle rotation shaft 105. Thus, in the opening state of the second switch body 202, the interlocking lever actuator 112 corresponding to the first switch body 201 interferes with the push plate 13 corresponding to the first switch body 201, and at this time, the handle transmission shaft 105 is locked no matter where the driving slide plate 111 corresponding to the first switch body 201 is located, that is, when the second switch body 202 is in the opening state, the first switch body 201 cannot be swung in and out.

In conclusion, the double-extraction-type automatic transfer switch with the mutually bypassed switches can be shaken in and out by the first switch in the self-opening state on the basis of the closing of the second switch, and similarly, because the double-extraction-type automatic transfer switch and the second switch are mutually bypassed switches, the second switch can be shaken in and out in the self-opening state only on the basis of the closing of the first switch. The locking device 1 of the present invention prevents the switches from being pulled out when the switches are closed, and simultaneously prevents the two switches from being simultaneously powered off.

The present invention is mainly described in the embodiments of the present invention, but the locking device 1 according to the present invention is not limited to the application of the double-draw-out type in which two automatic transfer switch bodies bypass each other, and may be: the automatic change-over switch is a draw-out type, and the bypass switch is a fixed bypass type automatic change-over switch. The upper bypass switch is fixed, a drawer seat is not arranged, the upper bypass switch cannot be swung in and out, the lower automatic change-over switch is provided with a drawer seat and can be swung in and out in the drawer seat 100, a driving sliding plate 111, an interlocking driving piece 112, a push plate 13, a locking plate 12 and a lower automatic change-over switch are arranged on the right side plate of the drawer seat, the driving sliding plate 111, the interlocking lever driving piece 112, the push plate 13 and the locking plate 12 are arranged on the right side plate corresponding to the upper bypass switch, only one interlocking lever (steel cable) is needed, namely, one end of the interlocking lever is connected with a sliding plate interlocking boss 1116 on the driving sliding plate 111 corresponding to the upper bypass switch, the other end of the interlocking lever is connected with an interlocking boss 1121 on the interlocking lever driving piece 112 corresponding to the lower automatic change-over switch body, the automatic change-over switch can be swung in and swung out only when the upper bypass switch is switched on and the lower automatic change-over switch is switched off, the function of preventing the switch from being drawn out during closing and simultaneously preventing the two switches from being powered off simultaneously is also realized.

Of course, the locking of the transmission 104 is not limited to the above embodiment in which the rotation of the handle transmission shaft 105 is blocked by driving the lock plate 12 into the rotation trajectory of the handle transmission shaft 105, but the lock plate 12 may be driven to a position covering the handle operation hole 10111 and the handle operation through hole 10116 so that the handle cannot be abutted against the handle transmission shaft 105 and the handle transmission shaft 105 cannot be driven to rotate.

According to the invention, the locking device is arranged on the drawer seat, so that the switch body is prevented from being pulled out when the switch is switched on, and the bypass type automatic transfer switch can prevent the two switches from being simultaneously powered off when the switch body is prevented from being pulled out when the switch is switched on. The switch is ensured to be accurate and reliable, thereby improving the operation safety of users.

Claims

1. A bypass type dual-power automatic transfer switch comprises a drawing frame (300), a first switch body (201) and a second switch body (202) which are vertically overlapped, and is characterized in that a transmission device (104) for driving the corresponding switch bodies to move in the drawing frame respectively is arranged between each switch body and the drawing frame (300), a locking device (1) is also arranged between each switch body and the drawing frame (300), the locking device (1) is associated with the opening and closing state of the corresponding switch body, the corresponding transmission device (104) is locked to prevent the switch bodies from moving in the drawing frame (300) when the corresponding switch bodies are in the closing state, the corresponding transmission device (104) is unlocked when the corresponding switch bodies are in the opening state, and a connecting mechanism (301) is arranged between the two locking devices (1), when one of the two switch bodies is in an opening state, the first switch body (201) and the second switch body (202) are enabled to be in an opening state, the locking device (1) corresponding to the switch body drives the other locking device (1) through the connecting mechanism (301) to lock the transmission device (104) of the other switch body.

2. A dual power automatic transfer switch of the bypass type according to claim 1, wherein the transmission means (104) comprises a handle transmission shaft (105), the handle transmission shaft (105) is disposed on the drawer frame (300) in the moving direction of the switch body, and the switch body is moved in the drawer frame (300) by the rotation of the handle transmission shaft (105); the locking device (1) comprises a driving sliding plate (111) which is arranged on the drawing frame (300) in a sliding manner along the overlapping direction of the two switch bodies, an interlocking lever driving piece (112) which is arranged on the drawing frame (300) in a rotating manner, a push plate (13) with a driving plate (131) and a pushing plate (132), and a locking plate (12) which is arranged on the drawing frame (300) in a sliding manner along the radial direction of a handle transmission shaft (105), wherein the driving plate (131) is arranged on the drawing frame (300) in a rotating manner in the horizontal state and is matched with the locking plate (12), the pushing plate (132) extends in the longitudinal state and is matched with the driving sliding plate (111) and the interlocking lever driving piece (112), the driving sliding plate (111) corresponding to the first switch body (201) and the interlocking lever driving piece (112) corresponding to the second switch body (202) are connected through an interlocking lever in a connecting mechanism (301), an interlocking lever driving piece (112) corresponding to the first switch body (201) and a driving sliding plate (111) corresponding to the second switch body (202) are connected through one interlocking lever in a connecting mechanism (301), the driving sliding plate (111) is driven to move between a sliding plate driving position corresponding to the closing state of the switch body and a sliding plate disengaging position corresponding to the opening state of the switch body by the switching motion of the corresponding switch body between the closing state and the opening state, and is transmitted to the interlocking lever driving piece (112) corresponding to the other switch body through the interlocking lever to move between a lever separating position and a lever pushing position; corresponding to the same switch body, when the interlocking lever driving piece (112) is at the lever far position, if the driving sliding plate (111) is at the sliding plate separating position, the action on the pushing plate (132) is released, the driving plate (131) acts on the locking plate (12), the locking plate (12) is positioned at the unlocking position outside the rotating track of the handle transmission shaft (105) of the switch body to release the blocking of the rotation of the handle transmission shaft (105), if the driving sliding plate (111) is at the sliding plate driving position, the driving sliding plate (111) acts on the pushing plate (132), the driving plate (131) acts on the locking plate (12), the locking plate (12) is positioned at the locking position in the rotating track of the handle transmission shaft (105) of the switch body to block the rotation of the handle transmission shaft (105); when the interlocking lever driving piece (112) is at the lever pushing position, the interlocking lever driving piece (112) acts on the pushing plate (132) and the driving plate (131) acts on the locking plate (12) corresponding to the same switch body, so that the locking plate (12) is positioned at the locking position in the rotating track of the handle transmission shaft (105) of the switch body to block the rotation of the handle transmission shaft (105).

3. The bypass type dual-power automatic transfer switch according to claim 2, wherein the drawer frame (300) comprises a drawer base (100) corresponding to the first switch body (201), another drawer base corresponding to the second switch body (202) and having the same structure as the drawer base (100), and a pair of drawer side plates (302), the first switch body (201) and the second switch body (202) have the same structure, the two drawer bases are stacked, the pair of side plates are respectively fixed with the two drawer bases and respectively arranged at two sides of the two drawer bases, the drawer bases (100) comprise a bottom plate (101), a left side plate (102) and a right side plate (103), the transmission device (104) is arranged in the corresponding drawer base (100), the driving sliding plate (111) is arranged at one side of the right side plate (103) of the corresponding drawer base (100) facing the left side plate (102), the interlocking lever driving pieces (112) are arranged on one sides, back to the left side plate (102), of the right side plates (103) of the corresponding drawer bases (100), the driving plates (131) are arranged at one ends, facing the right side plates (103), of the bottom plates (101), and the pushing plates (132) are formed by upwards folding and unfolding one ends, facing the right side plates (103), of the driving plates (131) in a longitudinal state.

4. A bypass type dual power automatic transfer switch according to claim 3, wherein said locking plate (12) comprises a driving plate (121), a locking plate body (122) and an elastic member (123), the driving plate (121) is slidably engaged with one end of the locking plate body (122) facing to said right side plate (103), the driving plate (121) is engaged with said driving plate (131), the elastic member (123) is connected between the driving plate (121) and the locking plate body (122), during the sliding of said locking plate (12) from said unlocking position to said locking position driven by said driving plate (131) is driving said driving plate (121), then the locking plate body (122) is pulled by the elastic member (123); when the drive plate (131) drives the locking plate (12) to slide from the locking position to the unlocking position, the drive plate (131) drives the transmission piece (121), and the transmission piece (121) pushes the locking plate body (122) to move.

5. The automatic transfer switch of a bypass type dual power supply according to claim 4, wherein the driving plate (121) includes a sliding plate (1211) and a driving plate (1212), the sliding plate (1211) and the driving plate (1212) are integrally formed with each other, and the sliding plate (1211) is parallel to the locking plate body (122), the driving plate (1212) is formed by folding and unfolding a central portion of a bottom of the sliding plate (1211) toward the locking plate body (122), a housing mounting surface (1011) is formed by folding and unfolding the bottom plate (101) upward toward a side of the locking plate body (122), a housing mounting surface guide pillar (1012) is provided on the housing mounting surface (1011) and a side toward the bottom plate (101), a locking plate body sliding groove (1221) is provided on the locking plate body (122), and the housing mounting surface guide pillar (1012) is accommodated in the locking plate sliding groove (1221) to face the locking plate body (122) The sliding piece is guided relative to the sliding of the housing installation surface (1011), a transmission piece guide piece (1222) is arranged on the locking plate body (122) and at one end facing the transmission piece (121), a transmission piece guide piece sliding groove (12111) is formed in the sliding piece (1211), the transmission piece guide piece (1222) penetrates through the transmission piece guide piece sliding groove (12111) to be positioned on the locking plate body (122) and guide the sliding of the transmission piece (121), and a driving column (12121) is fixed on the transmission piece (1212); a drive plate pivot (1015) is provided on the base plate (101) and at a position corresponding to the drive plate (131); a pivot hole (1311) and a drive sliding groove (1312) are formed in the drive plate (131), the pivot hole (1311) is in pivot fit with the drive plate pivot (1015), and the drive sliding groove (1312) is matched with the drive column (12121) on the transmission bottom plate (1212).

6. The dual power automatic transfer switch of a bypass type according to claim 5, wherein a handle operation through hole (1223) is formed in the locking plate body (122), a locking plate (1228) is provided at a side of the locking plate body (122) facing away from the slide plate (1211) and at a position corresponding to the handle operation through hole (1223), the locking plate (1228) has a locking tongue (12281), and the locking tongue (12281) protrudes into one end of the handle operation through hole (1223); the handle transmission shaft (105) is inserted and matched with the handle operation through hole (1223), limiting grooves (1051) are uniformly distributed on the circumferential surface of the handle transmission shaft (105) at intervals, the limiting grooves (1051) extend in an axial state parallel to the handle transmission shaft (105), when the locking plate body (122) is located at the locking position, the handle transmission shaft (105) is located at one end, provided with the locking bolt (12281), of the handle operation through hole (1223), and the locking bolt (12281) is inserted into the limiting grooves (1051).

7. The automatic transfer switch of the dual power supplies of claim 6, wherein the driving slide plate (111) is provided with a slide plate driving boss (1111), a driving end surface (1321) and a disengaging end surface (1323) are sequentially formed on one side surface of the pushing plate (132) from top to bottom along the height direction of the automatic transfer switch, the disengaging end surface (1323) is formed by the transition end surface (1322) which is concavely arranged on the driving end surface (1321); when the switch body is switched on, the driving sliding plate (111) is in a sliding plate driving position far away from the bottom plate (101), the sliding plate driving boss (1111) acts on the driving end surface (1321), and when the switch body is switched off, the driving sliding plate (111) is in a sliding plate disengaging position close to the bottom plate (101), and the sliding plate driving boss (1111) acts on the disengaging end surface (1323).

8. The bypass type dual power supply automatic transfer switch according to claim 7, wherein a driving slider sliding groove (1112) is formed on the driving slider (111), a driving slider guide post (1113) is provided on the left side of the right side plate (103) and at a position corresponding to the driving slider sliding groove (1112), the driving slider guide post (1113) is accommodated in the driving slider sliding groove (1112) to guide the driving slider (111), a driving groove (1114) is further formed on the driving slider (111) and at the upper portion thereof in a transverse state, an opening is formed at one end of the driving groove (1114) facing the housing mounting surface (1011), and a limit boss (1115) is protrudingly provided at the upper portion corresponding to the opening; each switch body comprises an operating mechanism and a contact system, the operating mechanism comprises a main shaft, the contact system comprises a moving contact driven by the main shaft to rotate and a pair of static contacts symmetrically arranged on two sides of the moving contact, a rocker mechanism (2011) is arranged on the main shaft, the rocker mechanism (2011) comprises a first connecting rod (20111) and a second connecting rod (20112), one end of the first connecting rod (20111) is connected with one end of the second connecting rod (20112), a connecting rod driving boss (201121) is arranged at the other end of the second connecting rod (20112), when the first switch body is switched on, the moving contact of the contact system and one of the static contacts are closed, the first connecting rod (20111) and the second connecting rod (20112) are in a zigzag state, the rocker mechanism (2011) is in a folding state, and the connecting rod driving boss (201121) is stopped by the limiting boss (1115) to enable the switch body not to enter the drawer base (100) from the outside When the switch body is in an opening state, a moving contact of a contact system is located at a middle position separated from a pair of static contacts, the first connecting rod (20111) and the second connecting rod (20112) are linearly unfolded to enable the rocker mechanism (2011) to be in an extending state, the connecting rod driving boss (201121) is matched with the driving groove (1114) to allow the switch body to enter the drawer base (100) from the outside of the drawer base (100), and after the switch body enters the drawer base (100), in the process of the opening and closing action of the switch body from the opening state, the connecting rod driving boss (201121) pushes the upper wall surface of the driving groove (1114) to enable the driving sliding plate (111) to move from a sliding plate disengaging position to a sliding plate driving position.

9. The dual power automatic transfer switch of the bypass type according to claim 8, wherein the interlock lever driving member (112) is provided with an interlock projection (1121) at one end and a lever driving projection (1122) at the other end, the lever driving projection (1122) passes through the right side plate (103) and extends to the left side of the right side plate (103); a sliding plate interlocking boss (1116) extending to the right side of the right side plate is further arranged on the driving sliding plate (111); the lever driving boss (1122) on each interlocking lever driving piece (112) is matched with the pushing plate (132) of the corresponding pushing plate (13), and the interlocking boss (1121) of the interlocking lever driving piece (112) arranged corresponding to one switch body is connected with the sliding plate interlocking boss (1116) of the driving sliding plate (111) arranged corresponding to the other switch body through one interlocking lever in the connecting mechanism (301).

10. The dual-power automatic transfer switch of the bypass type according to claim 9, wherein when one of the first switch body (201) and the second switch body (202) is in the on position, the driving slide plate (111) corresponding to the one switch body in the on position is in the slide plate driving position, and an interlocking lever in the connection mechanism (301) drives an interlocking boss (1121) of an interlocking lever driving member (112) corresponding to the other switch body and moves the lever driving boss (1122) away from a driving end surface (1321) of a pushing plate (132) of the pushing plate (13) corresponding to the other switch body; when one of the first switch body (201) and the second switch body (202) is in the opening position, the driving sliding plate (111) corresponding to the one switch body in the opening position is in the sliding plate disengaging position, and one interlocking lever in the connecting mechanism (301) drives the interlocking boss (1121) of the interlocking lever driving piece (112) corresponding to the other switch body and enables the lever driving boss (1122) to push the driving end surface (1321) on the pushing plate (132) of the push rod (13) corresponding to the other switch body.