CN210778304U

CN210778304U - Dual-power automatic transfer switch with novel protective cover

Info

Publication number: CN210778304U
Application number: CN201921730928.XU
Authority: CN
Inventors: 黄文平
Original assignee: Zhejiang Chint Electrical Electric Co ltd
Current assignee: Zhejiang Chint Electrical Electric Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-06-16
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses a double-power automatic transfer switch with a novel protective cover, wherein, the double-power automatic transfer switch comprises at least two units which are spliced and formed, each unit comprises a shell and a protective cover, a wiring end, a first static contact and a second static contact are arranged on the shell, a moving contact and an arc extinguishing cover are arranged in the shell, one end of the moving contact is connected with the wiring end, the other end of the moving contact is driven to rotate through a rotating shaft so as to be connected with the first static contact or the second static contact, the arc extinguishing cover is positioned above the first static contact and the second static contact, the protective cover is positioned above the arc extinguishing cover; the utility model has the characteristics of with low costs, the installation is more convenient, the protecting effect is good, the heat dissipation is good etc.

Description

Dual-power automatic transfer switch with novel protective cover

Technical Field

The utility model relates to a take dual supply automatic transfer switch of novel protection casing.

Background

In an electric power system, the requirement on power supply reliability is high in some occasions, for example, once power failure accidents occur in coal mines, oil refineries and the like, serious economic loss and even casualties can be caused, so that a common power supply and a standby power supply are required to be prepared in power supply systems of units; when the common power supply can not normally supply power, the standby power supply must be immediately switched on to recover power supply, and in order to achieve the purpose, the common power supply and the standby power supply need to be switched through the dual-power-supply changeover switch so as to ensure the reliability of power supply.

The switching structure of the existing common power supply and the standby power supply specifically rotates through the rotating shaft, so that the power supply switching is realized by connecting the moving contact with the two static contacts, and generally, the arc extinguishing cover is arranged above the static contacts for arc extinguishing.

Disclosure of Invention

The utility model discloses the main technical problem who solves provides a take dual supply automatic transfer switch of novel protection casing.

The utility model discloses the technical scheme who solves its technical problem and adopt is: the utility model provides a take dual supply automatic transfer switch of novel protection casing, wherein, form including two at least unit concatenations, the unit includes casing and protection casing, be equipped with the wiring end on the casing, first static contact and second static contact, be equipped with moving contact and arc-extinguishing cover in the casing, moving contact one end is connected with the wiring end, the other end drives through the pivot and rotates and make and be connected with first static contact or second static contact, the arc-extinguishing cover is located the top of first static contact and second static contact, the protection casing is located the top of arc-extinguishing cover and is equipped with a plurality of bleeder vent on the protection casing.

At first, through the setting of unit concatenation for it is more convenient to install, and simultaneously, the user can increase and decrease the unit according to actual demand. The protective cover is arranged above the arc extinguishing cover, and the heat inside the shell is dissipated to the air through the air holes, so that the temperature inside the shell is kept stable.

Wherein, be equipped with the arch on the casing top, the arch of two adjacent units is protruding to form the holding tank, and the protection casing is fixed on the holding tank.

The setting of arch for the protection casing is fixed more convenient, and the shape of protection casing also sets up for the arch simultaneously, and the interval grow between bleeder vent and the arc-extinguish chamber promptly makes the heat dissipation more convenient.

Wherein, the protection casing is connected with the arch-shaped bulge in a detachable way.

Through the setting of detachable connection for it is more convenient to assemble, if there is dust or foreign matter to block on the safety cover, also can dismantle and wash.

Wherein, be equipped with the buckle on the protection casing, be equipped with the draw-in groove on the arch, the buckle is fixed with the draw-in groove cooperation.

The quantity of buckle and draw-in groove makes holistic fixed more stable, and it is more convenient to dismantle, and the bolt-up also can be passed through to this place can be dismantled.

Wherein, be equipped with a plurality of arc-extinguishing piece on the arc-extinguishing cover, be equipped with the arch through-hole on the arc-extinguishing piece and make and form two bottoms, be equipped with first brace rod on the casing inboard, be equipped with the second brace rod on the casing outside, the top and the arc-extinguishing cover of arc-extinguishing piece are connected fixedly, and one bottom of arc-extinguishing piece is located first brace rod, and another bottom is located the second brace rod of adjacent unit casing.

The arc extinguishing piece is fixed by adopting the structure, is fixedly connected with the arc extinguishing cover through the top end, and the two bottom ends are fixed through the two supporting ribs, so that the integral fixation is more compact. The existing arc extinguishing piece is usually fixed on the arc extinguishing cover in a plug-in mode, but the arc extinguishing piece is easy to fall off due to the adoption of the structure, and the falling off is prevented due to the arrangement of the supporting ribs.

The first supporting rib and the second supporting rib are identical in structure and are arranged in an arch shape, and limiting parts are arranged at two ends of the first supporting rib and the second supporting rib.

Through the setting of arch, accord with the rotation of moving, the static contact and connect, the setting of spacing portion for arc-extinguishing piece realizes spacing effect in the assembling process.

Wherein, be equipped with the boss on the casing outside, the boss is located the top of second brace rod.

The arrangement of the reinforcing block improves the wall thickness of the shell, and the shell is prevented from being thinned or deformed due to electric arcs in the arc extinguishing process.

The swing arm is sleeved on the rotating shaft, one end of the first connecting piece is hinged to the swing arm, the other end of the first connecting piece abuts against the left inner wall of the shell, a first spring is sleeved on the first connecting piece, one end of the second connecting piece is hinged to the swing arm, the other end of the second connecting piece abuts against the right inner wall of the shell, and a second spring is sleeved on the second connecting piece.

The spring is sleeved on the connecting piece, so that the spring obtains supporting force, excessive operation is prevented, and the spring is fatigue. Through the spring setting of two symmetries, further improved holistic stability, connect through the rocking arm for overall structure is more stable. Through the setting of spring, for the torsional spring among the prior art, characteristics such as the cost is lower, the installation is more convenient, structure occupation space rate is little.

The device also comprises a control end, and the units are spliced and fixed with the units and the control end.

The setting of control end for overall control is more convenient, and is intelligent to be improved.

The fixing rod penetrates through the unit and the control end to be connected and fixed.

Through the dead lever for it is more convenient to connect fixedly.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a unit-to-unit splicing diagram in embodiment 1 of the present invention;

FIG. 3 is a schematic structural diagram of a unit in embodiment 1 of the present invention;

FIG. 4 is a front view of FIG. 3;

fig. 5 is a schematic structural view of a housing in embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a rocker arm in embodiment 1 of the present invention;

fig. 7 is a schematic structural view of a first connecting member according to embodiment 1 of the present invention;

fig. 8 is a partial sectional view of embodiment 1 of the present invention;

figure 9 is a schematic structural view of an arc extinguishing sheet in embodiment 1 of the present invention;

fig. 10 is a schematic structural view of a protective cover in embodiment 1 of the present invention.

Detailed Description

Example 1:

referring to fig. 1-10, a dual power automatic transfer switch with a novel protective cover, a dual power automatic transfer switch, includes at least two units 9 and a control end 91, and all through the concatenation fixed between unit 9 and the unit 9 or between unit 9 and the control end 91, preferably three unit 9 here, three unit 9 and control end 91 are connected, then are connected fixedly with control end 91 with three unit 9 through dead lever 92. The number of the fixing bars 92 may be two or more, preferably four, to improve fixing strength. Further, the unit 9 and the unit 9 can also be spliced by the positioning protrusion 931 and the positioning groove 932, specifically, the positioning protrusion 931 is arranged on the outer side of the housing of the unit 9, the positioning groove 932 is arranged on the inner side of the housing, and the positioning protrusion 931 extends into the positioning groove 932 of the adjacent unit 9 to be fixed. The fixing rod 92 passes through the positioning protrusion 931 and is fixed to the positioning groove 932.

The unit 9 includes a housing 1 and a protective cover 94, the housing 1 is provided with a terminal 11, a first fixed contact 13 and a second fixed contact 12, the housing 1 is provided with a movable contact 14 and an arc extinguishing cover 16, one end of the movable contact 14 is connected with the terminal 11, and the movable contact 14 is electrically connected with the terminal 11 through a brush wire 15.

The other end is driven by the rotating shaft 2 to rotate so as to be connected with the first fixed contact 13 or the second fixed contact 12, the movable contact 14 is connected with the first fixed contact 13 to form a common power supply, and the movable contact 14 is connected with the second fixed contact 12 to form a standby power supply. An arc extinguishing cover 16 can be arranged above the connection between the first fixed contact 13 and the movable contact 14 and above the connection between the second fixed contact 12 and the movable contact 14 for arc extinguishing.

The shell 1 is provided with a through hole 17, the rotating shaft 2 penetrates through the through hole 17 and extends into the shell 1, and the rocker arm 3 is sleeved on the rotating shaft 2. The left inner wall of the shell 1 is provided with a first clamping groove 4, the first clamping groove 4 is a trapezoidal groove and comprises a first bottom surface 41, a first inclined surface 42 and a second inclined surface 43, and the first inclined surface 42 is connected with the second inclined surface 43 through the first bottom surface 41. The right inner wall of the housing 1 is provided with a second clamping groove 5, the second clamping groove 5 is also a trapezoidal groove and comprises a second bottom surface 51, a third inclined surface 52 and a fourth inclined surface 53, and the third inclined surface 52 is connected with the fourth inclined surface 53 through the second bottom surface 51. Through the setting in dovetail groove, prevent to rotate the in-process, the connection piece takes place to damage, adopts the setting in dovetail groove, guarantees the connection piece and on two pivoted utmost points, through offsetting with the inclined plane, realizes spacing effect. The housing 1 is also provided with fixing holes 18.

The swing arm 3 is provided with a first fixing portion 31 and a second fixing portion 32 at two ends thereof, the first fixing portion 31 and the second fixing portion 32 are symmetrically disposed, the first fixing portion 31 is provided with a first fixing groove 311, and the second fixing portion 32 is provided with a second fixing groove 321. Further, the rocker arm 3 is provided with an extension 33, the extension 33 is provided with a fixing groove 331, and the movable contact 14 is fixed to the fixing groove 331. The fixed slots 331 are provided, so that the movable contact 14 can be fixed more conveniently and firmly. The preferred fixing means here is bolting.

The first connecting piece 6 comprises a first connecting piece 61 and a second connecting piece 62, the first connecting piece 61 and the second connecting piece 62 are perpendicularly connected, the first connecting piece 61 is hinged to the rocker arm 3, the second connecting piece 62 is fixedly connected with the first clamping groove 4, the second connecting piece 7 comprises a third connecting piece 71 and a fourth connecting piece 72, the third connecting piece 71 and the fourth connecting piece 72 are perpendicularly connected, the third connecting piece 71 is hinged to the rocker arm 3, and the fourth connecting piece 72 is fixedly connected with the second clamping groove 5. Here, the first connecting member 61, the second connecting member 62, the third connecting member 71 and the fourth connecting member 72 have the same structure, and the connecting members are all disposed in a sheet shape.

The first connecting member 61 is provided with a first slot 611, the second connecting member 62 is provided with a second slot 621, the first slot 611 is connected with the second slot 621 in a matching manner, the third connecting member 71 is provided with a third slot 711, the fourth connecting member 72 is provided with a fourth slot 721, and the third slot 711 is connected with the fourth slot 721 in a matching manner. Through two connecting pieces vertical connection, the connecting piece specifically is the slice form, and the back is connected perpendicularly for the spring housing is established on the connecting piece, forms the fixed effect of spring, adopts the slice form simultaneously, makes holistic material save, reduction in production cost. The first connecting piece 61 is provided with a first linkage hole 612, the first linkage shaft passes through the first linkage hole 612 and is hinged with the rocker arm 3, the third connecting piece 71 is provided with a second linkage hole 712, and the second linkage shaft 713 passes through the second linkage hole 712 and is hinged with the rocker arm 3. The four connecting pieces are consistent in structure, so that the four connecting pieces can be matched, connected and fixed at will.

The first spring 81 is sleeved on the first connecting sheet 6, the second spring 82 is sleeved on the second connecting sheet 7, and the rotating shaft 2 rotates to drive the rocker arm 3 to rotate, so that the moving contact 14 is connected with or separated from the first static contact 13 or the second static contact 12, and the spring is compressed while rotating to deform, so that the effect of quick reset is realized.

Be equipped with arch 19 on the 1 top of casing, the arch 19 of two adjacent units 9 forms holding tank 191, is equipped with the buckle 941 on the protection casing 94, is equipped with draw-in groove 192 on the arch 19, and buckle 941 is fixed with the cooperation of draw-in groove 192 for protection casing 94 is fixed on holding tank 191, specifically is equipped with two buckles 941 on the protection casing 94 both sides respectively, is equipped with two corresponding draw-in grooves 192 on the protruding both sides of arch 19 respectively. I.e. one shield 94 is fixed by four snaps 941. Here, the shield 94 is also arched such that the distance between the top of the shield 94 and the arc extinguishing chamber 16 is increased to enhance heat dissipation. The snap-in connection of the housing 1 with the protective hood 94 forms a detachable connection, which here can also be fixed by means of a screw fastening or other fixing means. The top surface of the protection cover 94 is provided with a plurality of ventilation holes 942, the protection cover 94 is positioned above the arc extinguishing chamber 16, and heat generated inside the housing 1 is dissipated through the ventilation holes 942.

The arc extinguishing chamber 16 is located above the first fixed contact 13 and the second fixed contact 12, the arc extinguishing chamber 16 is provided with a plurality of arc extinguishing plates 161, the arc extinguishing plates 161 are provided with arc-shaped through holes 162 to form two bottom ends, the inner side of the shell 1 is provided with first supporting ribs 193, the outer side of the shell 1 is provided with second supporting ribs 194, the top ends of the arc extinguishing plates 161 are fixedly connected with the arc extinguishing chamber 16, and the top ends of the arc extinguishing plates 161 and the arc extinguishing chamber 16 are usually fixedly connected in a plug-in manner. The arc-extinguishing plates 161 have one bottom end located on the first support rib 193 and the other bottom end located on the second support rib 194 of the housing 1 of the adjacent unit 9. Here the moving track of the moving contact is located in the arched through hole 162. The first supporting rib 193 and the second supporting rib 194 have the same structure, are both arranged in an arch shape, and are provided with limiting parts 196 at two ends.

Further, a reinforcing block 195 is provided on the outer side of the housing 1, and the reinforcing block 195 is located above the second support rib 194. The provision of the reinforcing block 195 increases the wall thickness of the case 1, preventing the case 1 from being thinned or deformed due to an arc during an arc extinguishing process.

The unit 9 splicing is firstly adopted, so that the installation is more convenient, and meanwhile, the unit 9 can be increased or decreased by a user according to actual requirements. By arranging the protective cover 94 above the arc extinguishing chamber 16, the heat inside the casing 1 is dissipated to the air through the air holes 942, so as to ensure that the temperature inside the casing is kept stable.

Claims

1. The utility model provides a take dual supply automatic transfer switch of novel protection casing which characterized in that: the automatic arc extinguishing device comprises at least two units which are spliced and formed, wherein each unit comprises a shell and a protective cover, a wiring terminal, a first static contact and a second static contact are arranged on each shell, a moving contact and an arc extinguishing cover are arranged in each shell, one end of each moving contact is connected with the wiring terminal, the other end of each moving contact is driven by a rotating shaft to rotate so as to be connected with the first static contact or the second static contact, the arc extinguishing cover is located above the first static contact and the second static contact, and the protective cover is located above the arc extinguishing cover and is.

2. The dual-power automatic transfer switch with the novel protective cover of claim 1, wherein: be equipped with the arch on the casing top, the arch of two adjacent units forms the holding tank, and the protection casing is fixed on the holding tank.

3. The dual-power automatic transfer switch with the novel protective cover as claimed in claim 2, wherein: the protective cover is detachably connected with the arch-shaped bulge.

4. The dual-power automatic transfer switch with the novel protective cover as claimed in claim 3, wherein: the protective cover is provided with a buckle, the arch-shaped bulge is provided with a clamping groove, and the buckle is matched and fixed with the clamping groove.

5. The dual-power automatic transfer switch with the novel protective cover of claim 1, wherein: be equipped with a plurality of arc-extinguishing piece on the arc-extinguishing cover, be equipped with the arch through-hole on the arc-extinguishing piece and make two bottoms of formation, be equipped with first brace rod on the casing inboard, be equipped with the second brace rod on the casing outside, the top and the arc-extinguishing cover of arc-extinguishing piece are connected fixedly, and an arc-extinguishing piece bottom is located first brace rod, and another bottom is located the second brace rod of adjacent unit casing.

6. The dual-power automatic transfer switch with the novel protective cover as claimed in claim 5, wherein: the first supporting rib and the second supporting rib are identical in structure and are arranged in an arch shape, and limiting parts are arranged at two ends of the first supporting rib and the second supporting rib.

7. The dual-power automatic transfer switch with the novel protective cover as claimed in claim 6, wherein: and a reinforcing block is arranged on the outer side of the shell and is positioned above the second supporting rib.

8. The dual-power automatic transfer switch with the novel protective cover of claim 1, wherein: the swing arm is sleeved on the rotating shaft, one end of the first connecting piece is hinged to the swing arm, the other end of the first connecting piece abuts against the left inner wall of the shell, a first spring is sleeved on the first connecting piece, one end of the second connecting piece is hinged to the swing arm, the other end of the second connecting piece abuts against the right inner wall of the shell, and a second spring is sleeved on the second connecting piece.

9. The dual-power automatic transfer switch with the novel protective cover of claim 1, wherein: the unit is fixed with the unit and the control end through splicing.

10. The dual-power automatic transfer switch with the novel protective cover of claim 9, wherein: the fixing rod penetrates through the unit and the control end to be connected and fixed.