CN104616916A - Operation mechanism of switching device capable of realizing three states - Google Patents

Abstract

The invention discloses an operation mechanism of a switching device capable of realizing three states. The operation mechanism of the switching device capable of realizing three states comprises an energy storage linkage assembly and an electric control assembly, a spindle seat wheel in the energy storage linkage assembly comprises two branched convex bodies, each branched convex body is hinged to a group of connecting bar energy storage units composed of a lower connecting bar, an upper connecting bar, an energy storage spring and a switching lever, and the two switching levers are controlled to uplift and press down to drive a spindle to rotate correspondingly so as to convert among the three states of dual-division, main closing and spare closing through three electromagnet switches of the electric control assembly. The assembly structure is smart, and the assembly is facilitated; the wrong operation and wrong indication preventing function is strong.

Description

The operating mechanism of three kinds of state of switch electrical equipment can be realized

Technical field

The invention belongs to transfer switch appliance field.

Background technology

Transfer switch electrical equipment is that one uses terminal appliance widely, self-action, manual type, automatic/hand composite type three types can be divided into by control mode, the action of contact system is mainly controlled by operating mechanism, to connect or disjunction main power source, stand-by power supply, thus guarantee the safety of electric power system and the continuity of production.

Inventor provide a kind of automatic/hand device for switching, both can with Electronic control, also with Non-follow control two kinds of control modes, the conversion that (i.e. " standby conjunction ") three kinds of states connected by the connection (i.e. " main conjunction ") of main power source (conventional power supply), main power source and the equal disjunction of stand-by power supply (i.e. " two points "), stand-by power supply can be realized.

The application then lays special stress on protecting the operating mechanism of this type of device for switching.

Summary of the invention

The present invention is intended to the operating mechanism proposing a kind of device for switching, in Electronic control mode, controls contact mechanism realization two points, main conjunction, standby conversion of closing three kinds of states.

For achieving the above object, technical scheme of the present invention is achieved in that

Realize an operating mechanism for three kinds of state of switch electrical equipment,

Described operating mechanism comprises energy storage interlock assembly, before and after energy storage interlock assembly comprises side by side and the front cheek interfixed and rear cheek, before, spindle drum wheel is also provided with between rear cheek, spindle drum wheel includes cylindrical wheel body, the each symmetry obliquely upward in wheel body both sides in the middle extends branch's convex body, before wheel body two ends are stretched out respectively, the seat wheel bore that rear cheek is provided with, before main shaft wheel seat is limited in, also can around its wheel body axis rotation between rear cheek, wheel body also has spindle hole along axle center, for assembling main shaft, Liang Ge branch convex body respectively has a connecting rod pin-and-hole, the center, hole of spindle hole and two connecting rod pin-and-holes is that isosceles triangle is arranged, the hole of spindle hole is centrally located at corner point,

Liang Ge branch convex body connects one group of connecting rod energy-storage units respectively separately;

Often organize that connecting rod energy-storage units comprises a pair lower link, connecting rod, energy-stored spring and combined floodgate lever on a pair, relatively be fixed together by connecting plate between often pair of lower link, the coordination hinge of the connecting rod pin-and-hole of branch's convex body that one end of lower link and spindle drum are taken turns, the other end of lower link is provided with racetrack long pinhole, and the length direction of long pinhole points to connecting rod pin-and-hole, one end of often pair of upper connecting rod pass through between upper pin rod be relatively fixed together, and upper pin rod is also through the long pinhole of lower link, and upper pin rod can move along its length in long pinhole 2042; In addition, often pair of upper connecting rod the other end respectively by the upper link point that forward and backward cheek sets firmly and forward and backward cheek hinged;

Each described combined floodgate lever comprises two panels side by side and the identical lever sheet of shape, and the middle part of lever sheet by be individually fixed in combined floodgate pin joint on forward and backward cheek and forward and backward cheek hinged, by a plate, two lever sheets are fixed as one between a free end in the same way of two lever sheets; Energy-stored spring one end connects upper pin rod, and the other end is articulated with the brace place of combined floodgate lever by a spring pin rod; There is projection at the middle part of two lever sheets towards all stretching above it, is fixed with a catch between the protruding apex of two lever sheets.

Further, on forward and backward cheek, also symmetry is provided with connecting rod upper limit and upper connecting rod lower limit on relevant position.

Further, the pellet surface outwardly of another free end in the same way of two lever sheets is also respectively fixed with a pin.

Further, described operating mechanism also includes Electronic control assembly, and described Electronic control assembly comprises: main conjunction electro-magnet switch, standby close electro-magnet switch, two points of electro-magnet switch, main conjunction connecting rod, standbyly close connecting rod, two points of connecting rods, two sub lever and two points of pull bars;

Described each electro-magnet switch is when powering up, and its iron core bounces back, and resets after power-off;

Main conjunction electro-magnet switch and the standby iron core closing electro-magnet switch and be fixed between forward and backward cheek respectively by attaching plate elements, and are positioned at the side-lower of one group of connecting rod energy-storage units upward separately; Main conjunction electro-magnet switch and standby iron core corresponding hinged main conjunction connecting rod, standby respective one end of closing connecting rod respectively of closing electro-magnet switch, main conjunction connecting rod, the standby other end closing connecting rod are respectively provided with the racetrack elongated hole that a length direction points to the hinged place of connecting rod and iron core, combined floodgate lever and the hinged spring pin rod of energy-stored spring are inserted in elongated hole, and can along the relative movement of elongated hole length direction in elongated hole;

Two points of electro-magnet switch are then for iron core is towards the front being fixed on front cheek of following formula, and its iron core is hinged with one end of two points of connecting rods, and the other end of two points of connecting rods is hinged with one end of two sub lever;

Described two points of pull bars comprise base plate, and the forward and backward side of base plate is respectively extended with a riser vertically upward, and the both sides in the middle part of base plate are each is extended with an articulated slab downwards, each articulated slab has the racetrack hinge hole that a length direction is parallel with base plate;

Forward and backward cheek is positioned at below main shaft and is respectively provided with a lifting apertures, the base plate of described two points of pull bars is each passed through the lifting apertures of forward and backward cheek, and forward and backward cheek is between the riser of the both sides, front and back of two points of pull bars, the middle part of riser has the elongated hole passed through for main shaft, and the length direction of elongated hole is parallel with the lifting direction of two points of pull bars; Forward and backward cheek is positioned at above main shaft and is also respectively provided with a lead, and the riser of the both sides, front and back of two points of pull bars has the gathering sill matched with lead;

The middle part of two sub lever is articulated with the bottom of the lifting apertures of cheek before below main shaft by jointed shaft, and be positioned at the below of base plate, the other end of two sub lever is by the hinge hole of a jointed shaft through two points of pull bar base plates, and this jointed shaft can move by the length direction along hinge hole in hinge hole;

The pellet surface outwardly of another free end in the same way of two lever sheets of each combined floodgate lever is also respectively fixed with a pin, the cant board top of the both sides, front and back of two points of pull bars is respectively convexly equipped with a hook projection corresponding with pin to left and right outside, when two points of pull bars be pulled move downward time, hook projection catches on pin, drives two combined floodgate levers all to lift.

Further, in addition, according to the requirement of GB14048.1, low-tension switch electric appliance equipment can not indicate the open position of electrical equipment after contact melting welding by any one mode, when the combined floodgate lever of the side of aforesaid operations mechanism is in "on" position, if contact melts weldering, although main shaft and spindle drum wheel can not rotate because contact melts weldering, but the combined floodgate lever of opposite side is pressed down by force by external force, the combined floodgate lever of this side may be forced to press down and turns to sub-gate position and remain on sub-gate position, demonstrates the separating brake index of mistake.Therefore, present invention also offers a kind of corrective measure, prevent contact from melting postwelding misoperation and instruction:

Main shaft stretches out forward and backward cheek and between the lever sheet of the same side of two combined floodgate levers and be in it conplane position also respectively fixed cover one eccentric banking stop is housed, the end of each lever sheet is convexly equipped with stopper section towards eccentric banking stop correspondence, and eccentric banking stop with main axis time, the stopper section that eccentric banking stop can avoid the combined floodgate lever of combined floodgate side wraps the upset route of lock pin joint, is barred from again the upset route of the stopper section of opposite side combined floodgate lever simultaneously.

The present invention also on the basis of the above, provide another improve, for be energy-stored spring install inconvenience problem:

To the installation method of energy-stored spring, normally need, by instrument, spring is pulled through assembling position by force, fixing through putting on spring pin rod while hole then on pull-out connecting plate.If when fixing two pieces (or more quantity) springs, assembling can be more difficult simultaneously.Meanwhile, the connecting plate by combined floodgate lever passes size and the spatial limitation in hole, and frock clamp also often cannot use.In addition, because be energy-stored spring, rigidity is comparatively large, and need to fix many springs will be more difficult simultaneously.Even need many people simultaneously compounding practice just can complete.

A thinking for the improvement of this problem is: energy-stored spring is installed under uncharged free state, and based on this thinking, we change the position limiting structure form of the involutory brake lever rod of forward and backward cheek, that is:

The top of forward and backward cheek between two combined floodgate levers is provided with a dismountable guide vane end stop, when not installing this guide vane end stop, when combined floodgate lever rotates to touching cheek top, energy-stored spring is in no load state, after installing this guide vane end stop additional, guide vane end stop exceed the top of cheek and its width meets the sidewall that combined floodgate lever rotates to touching guide vane end stop time, its energy-stored spring is in load stress.

Relative to prior art, the present invention has following advantage:

(1) can realize two points, main conjunction, standby conversion of closing three kinds of states.

(2) namely carrying out Electronic control by three electro-magnet switch, also by setting up manual-operating mechanism the control that two combined floodgate levers lift respectively and depress being realized to the switching of three kinds of states;

(3) assembly structure is ingenious, and easy to assembly;

(4) there is the stronger contact that prevents and melt the function of postwelding misoperation and instruction;

Other can see the concrete elaboration in embodiment part.

Accompanying drawing explanation

The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1, the general assembly schematic diagram of automatic/hand switch transition electrical equipment of the present invention; In figure: 1-manual-operating mechanism; 2-operating mechanism; 3-base plate; 4-position feedback assembly; 5-main shaft; 6-composite contact mechanism;

Fig. 2 is the decomposing schematic representation of chief component in Fig. 1;

Fig. 3 is the general assembly schematic perspective view of the manual-operating mechanism 1 in Fig. 1;

Fig. 4 is the explosive view of each building block of manual-operating mechanism 1;

Fig. 5 is that handle is by being leveled to the schematic diagram raising the State Transferring erected;

The engagement schematic perspective view of driving wheel 104 and left driven pulley 106, right driven pulley 107 when Fig. 6 is two points of states;

Fig. 7 is that driving wheel and left and right driven pulley combine and overlook lower pair of visual angle point (A), main conjunction (B) and the standby presentation state figure closing (C) three kinds of states;

Fig. 8 is that driving wheel and left and right driven pulley combine and look up lower pair of visual angle point (A), main conjunction (B) and the standby presentation state figure closing (C) three kinds of states;

Fig. 9 is for upwards looking up the schematic diagram of displaying three kinds of State Transferring with the below of " bottom plate 110 ";

Figure 10 is the schematic perspective view of the energy storage interlock assembly of operating mechanism;

Figure 11 is the exploded perspective view of each parts of energy storage interlock assembly;

Figure 12 and Figure 13 is respectively front view and the schematic perspective view of spindle drum wheel 203;

Figure 14 mainly represents the exploded perspective view of the part of connecting rod energy-storage units, and combined floodgate lever 207 does not show;

Figure 15 mainly represents the energy storage interlock assembly of operating mechanism respectively at two points (A), main conjunction (B) and the standby contrast schematic diagram closing (C) three kinds of states;

The schematic perspective view that Figure 16 is handle operation mechanism 1, energy storage links assembly and Electronic control assembly combines;

Figure 17 is the schematic perspective view after two points of electro-magnet switch 211 in Figure 16 and handle operation mechanism 1 being hidden;

Figure 18 is the exploded perspective view of each part in Figure 16;

Figure 19 carries out towards rear cheek the schematic diagram analysed and observe between forward and backward cheek;

Figure 20 is the cross-sectional schematic towards standby conjunction electromagnet direction along main shaft 5 axle center, and now two points of electro-magnet switch 211 power up, and its iron core 2111 bounces back;

Figure 21 is the end view of main conjunction state (state B);

Figure 22 is the schematic diagram showing three kinds of State Transferring in a cutaway;

Figure 23 is the structural representation under the two point states having installed banking stop 214 and guide vane end stop 215 additional;

Figure 24 demonstrates for main conjunction state (i.e. state B) schematic diagram how eccentric banking stop 214 to prevent opposite side combined floodgate lever (standby close combined floodgate lever) from pressing down;

Figure 25 and Figure 26 is respectively the schematic perspective view of eccentric banking stop 214, guide vane end stop 215;

Figure 27 is cutaway view, and when guide vane end stop is not installed in displaying additional, energy-stored spring is in no load state;

Figure 28 is the schematic diagram that guide vane end stop 215 assembles to cheek top;

Figure 29 is the schematic diagram that guide vane end stop 215 has been assemblied in cheek top;

Figure 30 is the structure enlarged diagram of the position feedback assembly 4 in Fig. 1;

Figure 31 is the building block explosive view of a contact unit of contact mechanism;

Figure 32 is the structural representation of contact unit under two point state, has concealed a half-shells;

Figure 33 is that moving contact group turns to view when offseting with finger-type clapper-type fixed contact 631 by clockwise direction in figure;

Figure 34 is that moving contact group is by the view counterclockwise turned in figure when offseting with finger-type clapper-type fixed contact 632;

Figure 35 is the exploded perspective view of one chip moving contact group;

Figure 36 be each assembling parts of Figure 35 together after schematic perspective view;

Figure 37 is the structural representation of individual layer moving contact;

Figure 38 is the exploded perspective view after moving contact group adds elastic device;

Figure 39 be each assembling parts of Figure 38 together after schematic perspective view;

Figure 40 gives the schematic diagram of the another kind of embodiment of setting up elastic device;

Figure 41 is how spring assembly coordinates other parts to ensure the principle analysis figure of contact pressure;

Figure 42 is the exploded perspective view of double-disk moving contact group;

Figure 43 be in Figure 42 each assembling parts together after schematic perspective view;

Figure 44 with Figure 46 is the front view of two panels moving contact together with baffle combination and stereogram respectively, Figure 45 be in Figure 44 AA to cutaway view;

Figure 47 is the explosive view of a kind of embodiment (one chip) of blade type plug-in type fixed contact;

Figure 48 be in Figure 47 each assembling parts together after schematic perspective view;

Figure 49 is the end view of Figure 48, and Figure 50 is that AA in Figure 49 is to cutaway view;

Figure 51 is the cross-sectional schematic of blade type plug-in type contact 623 insert state of moving contact;

Figure 52 is the explosive view of the another kind of embodiment (double-disk) of blade type plug-in type fixed contact;

Figure 53 be in Figure 52 each assembling parts together after schematic perspective view;

Figure 54 is the end view of Figure 53, and Figure 55 is that AA in Figure 54 is to cutaway view;

Figure 56 is the cross-sectional schematic of blade type plug-in type contact 623 insert state of moving contact.

Embodiment

It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.

Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.

As shown in Figure 1, this automatic/hand switch transition electrical equipment comprises manual-operating mechanism 1, operating mechanism 2, base plate 3, position feedback assembly 4, main shaft 5 and the several major part of contact mechanism 6, operating mechanism 2 drives main shaft 5 to rotate, and the rotation of main shaft 5 drives the contact of compound contact machine structure 6 to realize main power source and connects the conversion that (i.e. " standby conjunction ") three kinds of states connected by (i.e. " main conjunction "), main power source and the equal disjunction of stand-by power supply (i.e. " two points "), stand-by power supply.Manual-operating mechanism 1 for being controlled the action of main shaft 5 by it when needing Non-follow control, thus controls the rotation of main shaft 5 indirectly, realizes the conversion of three kinds of states.

Manual-operating mechanism 1 mainly comprises handle 101, driving wheel 104, left driven pulley 106, right driven pulley 107, wherein, handle 101 is articulated with the upper surface of driving wheel 104 by Handle axis 105, handle 101 can be overturn by thorny arbor 105, handle cover 1012 to be placed on driving wheel 104 and to be provided with the opening holding handle 101, when needing to use, handle 101 is erected, after finishing using, handle 101 can be set level in the opening being contained in handle cover 1012, make entirety more attractive in appearance and reduce touching damage.

As shown in Figure 5, the below that driving wheel 104 is being positioned at Handle axis 105 also has handle through hole 1041, described handle 101 is extended with a projection 1011 at the opposite side of Handle axis 105 centered by Handle axis 105, the slide block 102 and spring 103 that mutually abut also is equipped with from top to bottom in handle through hole 1041, slide block 102 can move up and down in handle through hole 1041, slide block 102 is supported in spring 103 one end, and the other end supports the step be provided with in handle through hole 1041; Sensitive switch 109 is installed with, the corresponding slide block 102 of switch contact of sensitive switch 109 below driving wheel 104; When handle 101 erects; the thorny arbor 105 of projection 1011 of handle 101 is pressed into towards handle through hole 1041 downwards; protruding 1011 compress slide block 102 slide downward; the contact contacting sensitive switch 109 is then pressed in slide block 102 lower end; sensitive switch closes; motor/electromagnet the loop of rupturing operation mechanism, enters manual operation protection.When cancelling manual operation, put back to handle downwards, protruding 1011 lift, slide block 102 homing under the effect of spring 103.Sensitive switch is opened, the motor/electromagnet loop of recovery operation mechanism, cancels manual operation protection.

In the present embodiment, as shown in Figure 9, sensitive switch 109 is positions that the lower surface being fixed in bottom plate 110 closes on bottom plate hole 1105.As shown in Figure 4, upper mounted plate 108 supports the rotation of driving wheel by upper mounted plate hole 1081.

As shown in Figure 3 and Figure 4 between upper and lower fixing plate, left driven pulley 106 and the right driven pulley 107 of symmetrical shape is also supported with respectively by left jack-post 1103 and right wheel shaft 1104, left driven pulley 106 and right driven pulley 107 are sector gear and lower surface closes on gear place is respectively fixed with a poke rod (1061,1071) down, driving wheel 104 circumference radially protrudes and is provided with one section of gear teeth, driving wheel 104 is that isosceles triangle arranges with the wheel axle center of left and right driven pulley (106,107) three-wheel, and the wheel axle center of driving wheel 104 is positioned at corner point, when being in two points of states, the gear teeth section of driving wheel 104 is towards the base of isosceles triangle, and the leftmost side tooth of this gear teeth section and rightmost side tooth engage with left driven pulley 106 and right driven pulley 107 respectively, the poke rod of each driven pulley is also between driven pulley affiliated separately and the wheel axle center of driving wheel, when driving wheel 104 is towards in the process of the angular range of its gear teeth section correspondence of direction turn of one of them driven pulley, then the tooth disengaging of this gear teeth section is also only engaged with the tooth of the driven pulley in turn direction with the engaging of the gear teeth of other direction driven pulley, kept motionless by out-of-gear driven pulley, poke rod belonging to corresponding also keeps motionless, the driven pulley of engagement rotates with driving wheel, poke rod belonging to corresponding also moves thereupon, acted accordingly by the mobile operating mechanism that drives of poke rod, thus realize the switching of corresponding state.

As shown in Figure 7 and Figure 8, when driving wheel and left and right driven pulley three gear combination are in two point state (i.e. A condition in figure), the base of the isosceles triangle that the gear teeth section 1042 of driving wheel 104 is formed towards driving wheel 104 with the wheel axle center of left and right driven pulley (106,107) three-wheel, and the leftmost side tooth of this gear teeth section 1042 and rightmost side tooth engage with the gear teeth section 1062 of left driven pulley 106 and the gear teeth section 1072 of right driven pulley 107 respectively, the poke rod of each driven pulley is also between driven pulley affiliated separately and the wheel axle center of driving wheel.To be transformed into C state: when driving wheel 104 is towards in the process of the angular range of its gear teeth section 1042 correspondence of direction turn of one of them driven pulley (such as left driven pulley 106), then the tooth disengaging of this gear teeth section 1042 is also only engaged with the tooth of the driven pulley (left driven pulley 106) in turn direction with the engaging of the gear teeth of other direction driven pulley (right driven pulley 107), kept motionless by out-of-gear driven pulley (right driven pulley 107), poke rod (1071) belonging to corresponding also keeps motionless, the driven pulley (left driven pulley 106) of engagement rotates with driving wheel, poke rod (1061) belonging to corresponding also moves thereupon, acted accordingly by the mobile operating mechanism that drives of poke rod, thus realize the switching of corresponding state, in like manner, the process being switched to B state repeats no more.Certainly, B state, C state can be appointed as main conjunction state or standby conjunction state as required, and namely B state is main conjunction state, and so C state is standby conjunction state; C state is main conjunction state, then B state is standby conjunction state.

In the present embodiment, the poke rod (106,107) bottom plate 110 as shown in Fig. 9 and Fig. 4 being also provided with respectively corresponding left and right driven pulley pass and movement pass groove (1101,1102), poke rod is through moving in groove, and there is the corresponding control assembly partially passing through and touch operating mechanism through groove, drive corresponding control assembly to move thereupon, thus realize the switching of state.

Operating mechanism of the present invention comprises energy storage interlock assembly, Figure 10 is the schematic perspective view of the energy storage interlock assembly of operating mechanism, Figure 11 is the exploded perspective view of each parts of energy storage interlock assembly, as shown in the figure, before and after energy storage interlock assembly comprises side by side and be fixedly connected with front cheek 201 and rear cheek 202 by three joint pins 209, before, rear cheek (201, 202) spindle drum wheel 203 is also provided with between, Figure 12 and Figure 13 is respectively front view and the schematic perspective view of spindle drum wheel 203, as shown in the figure, spindle drum wheel 203 includes cylindrical wheel body 2031, the each symmetry obliquely upward in wheel body 2031 both sides in the middle extends branch's convex body (2032, 2032 '), the outer wall at wheel body 2031 two ends is respectively provided with a ring-shaped step inwardly bounced back, before stretching out respectively, rear cheek (201, 202) the seat wheel bore (2014 be provided with, 2024), by before the coordinating and make main shaft wheel seat 203 be limited in of ring-shaped step and seat wheel bore, also can around its wheel body 2031 axis rotation between rear cheek, wheel body 2031 also has spindle hole 2031 ' along axle center, for assembling main shaft 5, Liang Ge branch convex body (2032, 2032 ') a connecting rod pin-and-hole (2033 is also respectively had, 2033 '), spindle hole 2031 ' and two connecting rod pin-and-holes (2033, 2033 ') center, hole is isosceles triangle arrangement, the hole of spindle hole 2031 ' is centrally located at corner point.

Liang Ge branch convex body (2032, 2032 ') one group of connecting rod energy-storage units is connected separately respectively, as shown in Figure 11 and Figure 14, often organize connecting rod energy-storage units and comprise a pair lower link 204, connecting rod 205 on a pair, energy-stored spring 206 and combined floodgate lever 207, relatively be fixed together by connecting plate 2041 between often pair of lower link 204, one end of lower link 204 is taken turns together with the coordination hinge of the connecting rod pin-and-hole 2033 of branch's convex body (for 2032) of 203 by lower pin rod 2041 and spindle drum, the other end of lower link 204 is provided with racetrack long pinhole 2042, and the length direction of long pinhole 2042 points to lower pin rod 2041 (or perhaps connecting rod pin-and-hole 2033), one end of often pair of upper connecting rod 205 pass through between upper pin rod 2051 be relatively fixed together, and upper pin rod 2051 is also through the long pinhole 2042 of lower link, length direction due to long pinhole 2042 points to lower pin rod 2041, pin rod 2051 can be moved along its length in long pinhole 2042, thus make the pin joint of connecting rod 205 and lower link 204 (namely go up representated by pin rod 2051, being called for short " middle pin joint ") pin joint of taking turns 203 with lower link 204 and spindle drum (namely descends representated by pin rod 2041, be called for short " lower link point ") between distance be not fixing, namely the distance between pin joint and lower link point can produce stretches, contracting change, in addition, the other end of often pair of upper connecting rod 205 is hinged respectively by the upper link point that forward and backward cheek (201,202) sets firmly (2015,2025 indication) and forward and backward cheek (201,202),

Upper link point (2015,2025 referred to) immobilizes relative to the position of whole energy-storage units, and wheel body 2031 axle center of spindle drum wheel 203 also immobilizes relative to the position of whole energy-storage units, therefore, upper link point and spindle drum take turns 203 wheel body 2031 axle center between distance be fixing;

Distance between middle pin joint (2051 refer to) and upper link point immobilizes, middle pin joint can move centered by upper link point, middle pin joint also can move centered by lower link point (2041 refer to), lower link point then can move centered by wheel body 2031 axle center that spindle drum takes turns 203, and main shaft wheel seat 203 body between lower link point and wheel body 2031 axle center in fact also can be considered a connecting rod (being called for short " third connecting rod ").Therefore, three connecting rods that have been actually hinged successively between wheel body 2031 axle center of taking turns 203 at upper link point and spindle drum: upper connecting rod 205, lower link 204, third connecting rod, and, due to the design of the long pinhole 2042 of lower link 204, make the distance variable between pin joint and lower link point, therefore, in making, lower link point possesses can be under external force, between wheel body 2031 axle center of taking turns 203 at upper link point and spindle drum, the both sides of line carry out the condition of movement back and forth, close a floodgate lever 207 and energy-stored spring 206 then both act as the transmitter that external force applies, also serve in the effect moving to a certain rear flank maintenance shape 2 state simultaneously.

As shown in Figure 10 and Figure 11, each combined floodgate lever (207, 207 ', example is depicted as with 207) comprise two panels side by side and the identical lever sheet (2071 of shape, 2072), and lever sheet (2071, 2072) middle part is by before being individually fixed in, rear cheek (201, 202) the combined floodgate pin joint (with 2013 of Figure 11 Suo Shi) on is with front, rear cheek is hinged, two lever sheets (2071, 2072) a plate 2073 is passed through between a free end in the same way by two lever sheets (2071, 2072) be fixed as one, two lever sheets (2071, 2072) pellet surface outwardly of another free end in the same way is also respectively fixed with a pin 2076, one end of energy-stored spring 206 (the present embodiment is a group and is provided with two) connects upper pin rod 2051 (namely pin joint), and the other end is articulated with brace 2073 place of combined floodgate lever 207 by a spring pin rod 208, there is projection at the middle part of two lever sheets (2071,2072) towards all stretching above it, a catch 2074 is fixed with between the protruding apex of two lever sheets, catch 2074 also has the poke hole 2075 of a length direction perpendicular to two lever sheets, the poke rod (1061,1071) of the left and right driven pulley (106,107) of manual-operating mechanism 1 stretches in corresponding poke hole respectively, driven pulley rotates, by the cooperation of poke rod-poke hole, corresponding combined floodgate lever is driven to rotate around its hinged combined floodgate pin joint.

Figure 15 mainly represents the energy storage interlock assembly of operating mechanism respectively at two points (A), main conjunction (B) and the standby contrast schematic diagram closing (C) three kinds of states, for clarity sake, be have employed analysing and observe of carrying out between the cheek of front and back under A condition, B and C state eliminates blocking of front cheek.

As shown in figure 15, combined floodgate pin joint2013 be positioned at upper link point2025 with spindle drum wheel 203between, upper link point2025 be positioned at spring pin rod 208 with combined floodgate pin jointbetween 2013 (it should be noted that, certain parts above-mentioned " be positioned at between", be not limited between line on, can be the side being positioned at line, namely the upright projection of relative this line of certain parts falls on line.), coordinate the positions such as aforesaid each pin joint, connecting rod to lay the effect of relation and energy-stored spring, the interlock conversion of kind of the state of three shown in Figure 15 can be realized:

In figure, state A is two points of location statuss, two combined floodgate levers are sub-gate position (namely combined floodgate lever lifts), the free end (going up pin rod 2051 i.e. middle pin joint place place for representative in scheming) of the upper connecting rod 205 of the left and right sides is subject to the pulling force of energy-stored spring 206, upwards lift around 2025, on forward and backward cheek, also symmetry is provided with connecting rod upper limit (2011,2011 ', 2021, the 2021 ' indication as Figure 11) on relevant position, connecting rod is made to be stabilized in the position of connecting rod upper limit respectively, again by two lower links, make spindle drum wheel 203be stabilized in by-level position, thus two point position, the centre realizing whole mechanism.

In figure, state B is main conjunction state, state A-state B is converted to: when the combined floodgate lever 207 in left side to move to closing position by external force from two points of positions (the remaining on two point position of right side), can stride across energy-stored spring 206 dead-centre position (namely 2025 and 2013 line on position), the free end of the upper connecting rod 205 in left side can under energy-stored spring 206 releases the pulling force of energy, move downward from connecting rod upper limit around 2025, for maintain and spacing, before, on rear cheek, also symmetry is provided with connecting rod lower limit (as 2012 of Figure 11 on relevant position, 2012 ', 2022, 2022 ' indication), namely the position that connecting rod can be moved at most connecting rod lower limit is gone up.And drive lower link and spindle drum wheel 203 to be rotated counterclockwise certain angle simultaneously.Finally, the middle pin joint between the lower link in left side and the upper connecting rod in left side can be crossed dead-centre position and form rigidity supporting structure.In this process, because the long pinhole 2042 of lower link provides activity surplus, the combined floodgate lever 207 ' on right side is not also subject to External Force Acting, and the upper connecting rod therefore and combined floodgate lever can keep motionless.5, main shaft rotates to an angle counterclockwise under the drive of spindle drum wheel 203, drives composite contact mechanism 6 action, connects main power source.

In figure, state C is standby conjunction state, if when being in state B, switch to state C, intermediate demand, through state A, namely needs the former combined floodgate lever depressed to lift, and removes the connection with former power supply, and side can connect another power supply.Equally, when being in state C, switch to state B, also need through state A.For by state B to state C:

State B-state A: when the combined floodgate lever in left side to move to two points of positions by external force from closing position (the remaining on pair point position of right side), drive energy-stored spring energy storage, then, under the upper connecting rod 205 in left side can release the pulling force of energy after energy-stored spring 206 crosses dead point, connecting rod upper limit is turned back to from connecting rod lower limit; And drive lower link and spindle drum to take turns 203 dextrorotations to rotate back into level, namely get back to two point position (state A) simultaneously, and with the upper connecting rod and energy-stored spring acting in conjunction on right side under keep the poised state of horizontal level.In this process, the upper connecting rod on right side and combined floodgate lever keep motionless.Spindle drum wheel 203 drives main shaft 5, and main shaft 5 drives composite contact mechanism 6 action, is in two point state.

State A-state C: identical with the transfer principle of aforesaid state A-state B, the combined floodgate lever on right side moves to closing position (the remaining on two point position of left side) by external force from two points of positions, drive energy-stored spring energy storage, when energy-stored spring discharges, the upper connecting rod on right side under energy-stored spring releases the pulling force of energy, can move to connecting rod lower limit from connecting rod upper limit.And drive lower link and spindle drum wheel 203 to turn clockwise certain angle simultaneously.Finally, the upper connecting rod on lower link and right side is crossed dead point and is formed rigidity supporting structure.In this process, the upper connecting rod in left side and combined floodgate lever keep motionless.Equally, spindle drum wheel 203 drives main shaft 5, and main shaft 5 drives composite contact mechanism 6 action, connects stand-by power supply.

The energy storage interlock assembly of above-mentioned operating mechanism both directly manually can lift, depress the mode of combined floodgate lever, realize the conversion of three kinds of states, also can by installing the manual-operating mechanism 1 as shown in Fig. 3 to Fig. 9 above it, by turn handle 101, a certain driven pulley (106 or 107) is driven to rotate, the poke hole (2075 referred to) of the combined floodgate lever stretched into it by the poke rod (1061 or 1071) below this driven pulley coordinates, thus drive corresponding combined floodgate lever to lift or depress, realize the conversion of three kinds of states.

In addition, present invention also offers the scheme being realized three kinds of State Transferring by the mode of Electronic control, namely the Electronic control assembly of operating mechanism is additionally provided, as shown in Figure 16 to Figure 21, described Electronic control assembly comprises: main conjunction electro-magnet switch 210, standby close electro-magnet switch 210 ', two points of electro-magnet switch 211, main conjunction connecting rod 2102, standbyly close connecting rod, two points of connecting rods 2112, two sub lever 212 and two points of pull bars 213;

Described each electro-magnet switch is when powering up, and its iron core bounces back, and resets after power-off;

Main conjunction electro-magnet switch 210 and the standby iron core closing electro-magnet switch 210 ' are upward and be fixed between forward and backward cheek respectively by attaching plate elements, and be positioned at the side-lower of one group of connecting rod energy-storage units separately, it is alternatively the side-lower being positioned at a combined floodgate lever (207,207 ') separately, iron core retraction when mainly electro-magnet switch powers up, provides power for respective combined floodgate lever presses down.Specific implementation structure is: main conjunction electro-magnet switch 210 and standby iron core corresponding hinged main conjunction connecting rod 2102, standby respective one end of closing connecting rod 2102 ' respectively of closing electro-magnet switch 210 ', main conjunction connecting rod 2102, the standby other end closing connecting rod 2102 ' are respectively provided with the racetrack elongated hole (21021,21021 ') that a length direction points to the hinged place of connecting rod and iron core, combined floodgate lever and the hinged spring pin rod 208 of energy-stored spring are inserted in elongated hole, and can along the relative movement of elongated hole length direction in elongated hole;

Two points of electro-magnet switch 211 are the front of being fixed on front cheek 201 of iron core towards following formula, and its iron core 2111 is hinged with one end of two points of connecting rods 2112, and the other end of two points of connecting rods 2112 is hinged with one end of two sub lever 212;

Described two points of pull bars 213 comprise base plate 2131, the forward and backward side of base plate 2131 is respectively extended with a riser (2132) vertically upward, both sides in the middle part of base plate 2131 are each is extended with an articulated slab 21311 downwards, each articulated slab 21311 has the racetrack hinge hole 21312 that a length direction is parallel with base plate;

Forward and backward cheek (201,202) is positioned at below main shaft 5 and is respectively provided with a lifting apertures, the base plate 2131 of described two points of pull bars 213 is each passed through the lifting apertures of forward and backward cheek, and forward and backward cheek (201,202) is between the riser 2132 of the both sides, front and back of two points of pull bars 213, the middle part of riser 2132 has the elongated hole 21321 passed through for main shaft 5, and the length direction of elongated hole 21321 is parallel with the lifting direction of two points of pull bars, for two points of pull bars when being elevated, avoid touching with main shaft; Forward and backward cheek is positioned at above main shaft and is also respectively provided with a lead 2016, the riser 2132 of the both sides, front and back of two points of pull bars 213 has the gathering sill 21323 matched with lead 2016;

The middle part of two sub lever 212 is articulated with the bottom of the lifting apertures of cheek 201 before below main shaft 5 by jointed shaft 2121, and be positioned at the below of base plate 2131, the other end of two sub lever 212 is by the hinge hole 21312 of a jointed shaft through two points of pull bar 213 base plates, and this jointed shaft can move (when this structure makes two points of pull bars 213 do lifting moving under the drive by two sub lever 212, lift path can not produce the skew of forward and backward) by the length direction along hinge hole in hinge hole 21312; The pellet surface outwardly introducing another free end in the same way of the two lever sheets (2071,2072) of each combined floodgate lever (207,207 ') above is also respectively fixed with a pin 2076, cant board 2132 top of the both sides, front and back of two points of pull bars 213 is respectively convexly equipped with a hook projection 21322 corresponding with pin 2076 to left and right outside, when two points of pull bars 213 be pulled move downward time, hook projection 21322 catches on pin 2076, drives two combined floodgate levers all to lift.

Shown in Figure 16 to Figure 21 and Figure 22, the Electronic control assembly introducing operating mechanism is the conversion how being realized three kinds of states by the mode of Electronic control.

Two points of states: the iron core of each electro-magnet switch is all in release condition.Main shaft 5 spindle drum wheel 203 and both sides lower link-on connecting rod-energy-stored spring effect under, be equilibrated at horizontal level (two points of positions).

Main conjunction or standby conjunction state are to the switching (close a floodgate-> separating brake) of two points of states: when being in arbitrary closing position, two points of electro-magnet switch power up (another two electro-magnet switch do not power up), the iron core adhesive retraction of two points of electro-magnet switch, pull two sub lever 212 to rotate with the hinged support (jointed shaft 2121) of front cheek in the middle part of it by two points of connecting rods 2112, thus drive two points of pull bars 213 to move downward.Then the pin 2076 that the hook projection 21322 of two points of pull bars 213 can catch on combined floodgate lever moves downward, combined floodgate lever is made to move to sub-gate position from closing position, combined floodgate lever coordinating by the poke rod of poke hole 2075 and driven pulley simultaneously, drive driven pulley to rotate thus drive rotatable handle to two points of positions, and giving energy-stored spring energy storage.Then energy-stored spring release, pulls connecting rod to move to connecting rod upper limit from connecting rod lower limit.Under the reaction force of then connecting rod and energy-stored spring on another side, be stabilized in level.Complete the process from either side combined floodgate-bis-separating brake.

Two points of state A are to main conjunction or the switching (separating brake-> closes a floodgate) for conjunction state (B or C): two points of electro-magnet switch do not power up, main conjunction or the standby electro-magnet switch that closes power up, corresponding iron core adhesive retraction, the combined floodgate lever of corresponding side is pulled to move to closing position from two points of positions, combined floodgate lever is stirred handle simultaneously and is rotated to combined floodgate indicating bit from two points of indicating bits, drives energy-stored spring energy storage simultaneously.Subsequently, energy-stored spring discharges, and pulls the upper connecting rod of corresponding side to move to connecting rod lower limit from connecting rod upper limit.And drive lower link and spindle drum to take turns the 203 counterclockwise or certain angles that turn clockwise.Main shaft rotates to closing position from horizontal direction with spindle drum wheel 203, and is finally stabilized on closing position.Now, understand dead point between the lower link of corresponding side and upper connecting rod and form rigidity supporting structure.In the process, the upper connecting rod of opposite side and combined floodgate lever can keep motionless.Mechanism completes and assigns to main conjunction or standby electronic action conversion of closing a floodgate from two.

It should be noted that, after converting from two electronic action assigning to main conjunction or standby combined floodgate, even if main conjunction or the standby electro-magnet switch that closes no longer power up, namely corresponding iron core is upspring, because the racetrack elongated hole (21021,21021 ') of the other end of its hinged connecting rod 2102 exists, the combined floodgate lever be pressed down can not lift because of the rising of 2102 of connecting rod.

In addition, according to the requirement of GB14048.1, low-tension switch electric appliance equipment can not indicate the open position of electrical equipment after contact melting welding by any one mode, when the combined floodgate lever of the side of aforesaid operations mechanism is in "on" position, if contact melts weldering, although main shaft and spindle drum wheel 203 can not rotate because contact melts weldering, pressed down the combined floodgate lever of opposite side by force by external force, the combined floodgate lever of this side may be forced to press down and turns to sub-gate position and remain on sub-gate position, demonstrates the separating brake index of mistake.Therefore, present invention also offers a kind of corrective measure, prevent contact from melting postwelding misoperation and instruction:

As shown in Figure 23 to Figure 25, before main shaft 5 stretches out, rear cheek and be positioned at the lever sheet (2071 and 2071 ' of the same side of two combined floodgate levers, 2072 and 2072 ') between and be in it conplane position also respectively fixed cover one eccentric banking stop 214 is housed, the end of each lever sheet is convexly equipped with stopper section (in figure 2076 towards eccentric banking stop correspondence, shown in 2076 '), and eccentric banking stop 214 is when rotating with main shaft 5, the stopper section that eccentric banking stop can avoid the combined floodgate lever of combined floodgate side wraps the upset route of lock pin joint (2013 is example), be barred from again the upset route of the stopper section of opposite side combined floodgate lever simultaneously.

As shown in the figure, after adding eccentric banking stop 214 and stopper section, during two points of states, eccentric banking stop 214 is horizontal, and can not affect the feed motion of both sides combined floodgate lever.

After either side closes a floodgate, eccentric banking stop can rotate with main shaft, due to the setting of eccentrical shape, after rotation, one of them is just in time positioned on the upset route of opposite side stopper section eccentric position, limiting plate 214 liang of right angles (also can be other shapes), by both counter stopper restriction (the D indication as in Figure 24), the combined floodgate lever being in gate-dividing state can not carry out feed motion, thus prevent faulty operation from arriving combined floodgate, also therefore can not show the combined floodgate instruction of mistake simultaneously.

The present invention also on the basis of the above, provide another improve, for be energy-stored spring install inconvenience problem:

As shown in Figure 10 and Figure 11 in energy-storage units structure, to the installation method of energy-stored spring, normally need, by instrument, spring is pulled through assembling position by force, fixing through putting on spring pin rod (208,208 ') while hole then on pull-out connecting plate 2073.If when fixing two pieces (or more quantity) springs, assembling can be more difficult simultaneously.Meanwhile, the connecting plate 2073 by combined floodgate lever passes size and the spatial limitation in hole, and frock clamp also often cannot use.In addition, because be energy-stored spring, rigidity is comparatively large, and need to fix many springs will be more difficult simultaneously.Even need many people simultaneously compounding practice just can complete.

A thinking for the improvement of this problem is: energy-stored spring is installed under uncharged free state, based on this thinking, before we change, the position limiting structure form of the involutory brake lever rod of rear cheek, that is: as Figure 23, shown in Figure 24 and Figure 26, before, the top of rear cheek between two combined floodgate levers is provided with a dismountable guide vane end stop 215, when not installing this guide vane end stop 215, when combined floodgate lever rotates to touching cheek top, energy-stored spring is in no load state, after installing this guide vane end stop 215 additional, guide vane end stop 215 exceed the top of cheek and its width meets the sidewall that combined floodgate lever rotates to touching guide vane end stop 215 time, its energy-stored spring is in load stress.

As shown in figure 27, now because the width in cheek top 20201 own is less, combined floodgate lever rotates to when touching top, and energy-stored spring is unstressed, can wear separately spring pin rod (208,208 ') successively and fix; Then, as shown in figure 28, by frock, combined floodgate lever is strutted to both sides, put into guide vane end stop 215 and be fixed on cheek top; As shown in figure 29, after adding guide vane end stop 215, under the energy-stored spring of two combined floodgate levers remains on suitable first dress power.

The feature of this structure:

Install laborsaving, simple and easy, enhance productivity.Energy-stored spring owing to being install under no load state, can many, install separately successively.

As shown in figure 30, position feedback assembly comprises support body 40, and the shaft seat 41 be installed in support body 40, two points of position sensitive switches 422, main co-bit sensitive switch 421 and standby co-bit sensitive switch 422, shaft seat 41 is socketed with main shaft by the main shaft trepanning 411 that it has, and can with main axis, projection is arranged with outside shaft seat 41, two points of position sensitive switches 422, main co-bit sensitive switch 421 and standby co-bit sensitive switch 422 lay respectively at top and two sides of shaft seat, projection with shaft seat during main axis 41 is conflicted the contact of each sensitive switch respectively, trigger corresponding sensitive switch, to show corresponding state.

Contact mechanism is the mechanism be directly connected with power supply in transfer switching equipment, the situation of the movement by whether of the contact in contact mechanism be divided into moving contact and stationary contact first two, finger-type clapper-type and blade type plug-in type two class can be divided into again by combination, finger-type clapper-type contact can resist when closed or open circuit and burns under arcing, there is higher connection and breaking capacity, but the node electric power due to this type of contact is repulsion type, moving of contact, poor heat stability, can scold under higher short time withstand current effect and hold, therefore the requirement of the short circuit withstand capacity that the standard that reaches specifies is difficult to.The node electric power of blade type plug-in type contact is attractive, it is dynamic, thermal stability is high, higher short-time withstand index can be reached, but because this type of contact adopts contactless design, therefore when closed or open circuit, this type of contact can not burn by arc resistant, is difficult to the requirement reaching higher connection and breaking capacity.Patent No. CN200710059760X discloses a kind of contact unit of automatic transfer switching electric appliance, in moving contact group, existing finger-type clapper-type moving contact has again blade type plug-in type moving contact, stationary contact head group is then equipped with corresponding two finger-type clapper-type fixed contacts and two blade type plug-in type fixed contacts, both make use of the advantage of two class contacts, effectively evade deficiency again.But the contact unit of this kind of structure also has deficiency: 1, blade type plug-in type fixed contact is provided with two, structure is comparatively complicated, adds cost and fault possibility probability; 2, moving contact group both sides lay two blade type plug-in type fixed contacts and two finger-type clapper-type fixed contacts respectively, and between blade type plug-in type fixed contact and finger-type clapper-type fixed contact, also spring and support to be set, therefore, the effective rotation angle range leaving moving contact for is subject to larger restriction, only can reach the angular range of maximum 90 degree, and be not suitable for needing also to be provided with two points of state of switch electrical equipment outside main conjunction, standby conjunction.

Therefore, present invention also offers a kind of contact mechanism, to adapt to realize the requirement of three kinds of state of switch electrical equipment.Scheme is as follows: as shown in figure 31,

Described contact mechanism comprises multiple contact units of arranging successively side by side;

Each contact unit comprises shell 61 and is placed in moving contact group 62, stationary contact head group and two arc control device 64 in shell 61;

Respectively have on shell 61 and on the central part of moving contact group 62 for the passing hole (as in figure, 611,621 is shown respectively) through main shaft 5 (namely in device for switching for the main shaft of transmission of power), and moving contact group to be set on main shaft 5 by the passing hole 621 on it and can to rotate with the rotation of main shaft 5 in shell 61;

Both sides specular centered by passing hole 621 of the central part of described moving contact group is each outwards stretches out a moving contact plate portion 624, the moving contact plate portion of both sides conducts to each other, the clapper-type contact 622 that the both sides that each moving contact plate portion 624 is also included in its outer end set firmly respectively and the blade type plug-in type contact 623 of an arc, and the arc of each blade type plug-in type contact 623 trend be with moving contact plate portion around the passing hole 621 of central part for the center of circle; Owing to being specular, so the blade type plug-in type contact 623 in two moving contact plate portions 624 is towards identical direction, respective clapper-type contact 622 is also all towards another identical direction.

Stationary contact head group comprises two the finger-type clapper-type fixed contacts (631,632) and a blade type plug-in type fixed contact 633 that lay respectively at moving contact group switching centre portion two side direction; Blade type plug-in type fixed contact 633 for the mobile route of being located at blade type plug-in type contact 623 corresponding to the junction surface 6331 that blade type plug-in type contact 623 engages, the clapper-type contact in an in the opposite direction and respectively corresponding moving contact plate portion, the respective contact (6311,6321) of two finger-type clapper-type fixed contacts (631,632).

Two arc control device 64 lay respectively in the space of two finger-type clapper-type fixed contacts (631,632) respectively and between blade type plug-in type fixed contact 633, and respectively near corresponding finger-type clapper-type fixed contact (631,632).

Under two points of states as shown in figure 32, now moving contact group 62 is vertically positioned in shell 61, and does not all contact with each fixed contact (631,632,633), cannot build any one loop, and contact mechanism is in two point state.

Main conjunction state as shown in figure 33, moving contact group 62 is prolonged clockwise direction and is rotated, clapper-type contact 622 to the moving contact plate portion 624 of moving contact group 62 one end stops when contacting with the contact 6311 of a finger-type clapper-type fixed contact 631 of stationary contact head group, now the blade type plug-in type contact 623 in the moving contact plate portion 624 of moving contact group 7 other end to insert in blade type plug-in type contact 623 junction surface 6331 and is bonded with each other, 631, moving contact group 62 and 633 is built into a loop, and contact mechanism is in main conjunction state.

Standby conjunction state as shown in figure 34, moving contact group 62 prolongs counterclockwise rotation, clapper-type contact 622 to the moving contact plate portion 624 of moving contact group 62 other end stops when contacting with the contact 6321 of another finger-type clapper-type fixed contact 632 of stationary contact head group, now the blade type plug-in type contact 623 in the moving contact plate portion of moving contact group 7 one end to insert in blade type plug-in type contact 623 junction surface 6331 and is bonded with each other, 632, moving contact group 62 and 633 is built into another loop, and contact mechanism is in standby conjunction state.

As seen from the figure, no matter moving contact group is clockwise or is rotated counterclockwise, when closing, all that the clapper-type contact 622 of moving contact group first departs from electrical connection, depart from after blade type plug-in type contact 623, when engaging, all that the blade type plug-in type contact 623 of moving contact group first engages with stationary contact head group, engage with the finger-type clapper-type fixed contact of stationary contact head group behind the clapper-type contact 622 of moving contact group, this structure can effectively reduce the node electric power that the box-like structure of doublebeat is brought, thus reduces the operating physical force requirement of main operation mechanism; And in closed process, plug-in type contacts one end and contacts one end prior to clapper-type and close, thus realizes non-loaded closed, effectively reduces the electrical wear of contact in closing course.In like manner, in the process that system disconnects, plug-in type contacts one end and lags behind clapper-type and contact one end and disconnect, thus realizes non-loaded disconnection, also can effectively reduce the electrical wear of contact in disconnection process.In addition, two finger-type clapper-type fixed contacts (631,632) and a blade type plug-in type fixed contact 633 lay respectively at the both sides in moving contact group switching centre portion, the anglec of rotation of moving contact group is expanded more, close to 180 degree, be more suitable for the device for switching being also provided with three kinds of State Transferring of two point state outside main conjunction, standby conjunction.

In addition, contact mechanism by closure state in off-state transfer process, moving contact group 62 need prolong inverse or clockwise direction rotation, inevitably electric arc is produced between the contact (6311 or 6321) of the finger-type clapper-type fixed contact (631 or 632) of the clapper-type contact 622 in moving contact group 62 and stationary contact head group, the striking direction of arc control device 64 can be ejected on the inwall of shell 61, therefore, the present invention also adds the baffle plate 65 of irony between arc control device and shell 61 inwall, electric arc can be avoided to be directly injected on the inwall of shell 61, further again, on the length direction of baffle plate 65, also correspondence is provided with the perpendicular screen cloth of length direction 66, baffle plate 65 pairs of electric arcs also have the effect of guiding, electric arc is moved to screen cloth 66.

In addition, because the contact of the finger-type clapper-type fixed contact (631 or 632) in the processing of part and the clapper-type contact 622 of moving contact group and stationary contact head group can inevitably occur some errors in welding process, add if main shaft and moving contact group are only the caused error etc. that is rigidly connected, due to point cantact phenomenon that above-mentioned cumulative errors cause during the contact of the clapper-type contact 622 that just there will be moving contact after various deviation accumulation with fixed contact, instead of the face contact of the best, therefore, the present invention has also done further improvement to moving contact group

As shown in Figure 31 and Figure 35, Figure 36, Figure 37, moving contact group, comprising: central part and moving contact,

Described central part comprise circular by two before, Rear housing half (6212, 6212 ') docking coordinated the central part housing of the formation be fixed together by bolt 6261 and nut 6262, the circumferential edge of central part housing respectively has a moving contact plate portion passing hole (embodiment as shown in figure 35 with casing center symmetry, each moving contact plate portion passing hole is then by by the half bore (62121 that each half housing respectively has, 62121 ') formed after docking), the center of central part housing has for through main shaft 5 (namely in device for switching for the main shaft of transmission of power) and the passing hole 621 be set on main shaft, and the size shape of passing hole 621 and main shaft cross-sectional sizes mating shapes, guarantee that passing hole hole wall and main shaft 5 periphery fit, main shaft directly drives central part housing to rotate by passing hole thereupon.

Described moving contact comprises:

Be clipped on the center connecting plate 625 of (between forward and backward half housing) in central part housing, center connecting plate 625 center have for main shaft 5 pass through hole 6251 (as shown in figure 36), and through leaving space (i.e. main shaft 5 directly do not pass through this drive moving contact to rotate through hole 6251) hole 6251 and main shaft 5;

Also comprise, lay respectively at the both sides of center connecting plate 625 separately through an outwardly directed moving contact plate portion 624 of moving contact plate portion passing hole of central part housing, the moving contact plate portion of both sides realizes conducting to each other via the center connecting plate 625 of centre, the clapper-type contact 622 that the both sides that each moving contact plate portion 624 is also included in its outer end set firmly respectively and the blade type plug-in type contact 623 of an arc, and the clapper-type contact 622 in two moving contact plate portions 624 is all towards same direction.

Gap is left between moving contact plate portion 624 and moving contact plate portion passing hole.

Because central part housing passing hole 621 and main shaft are directly socketed, (individual layer) moving contact directly and main shaft be socketed, the hole 6251 of passing of the center connecting plate 625 of moving contact is for passing for main shaft, before the center connecting plate 625 of moving contact is clipped on central part housing, between back casing, namely moving contact is driven to rotate by central part housing, and between the moving contact plate portion passing hole of the moving contact plate portion 624 of moving contact and central part housing, have gap, therefore, when the clapper-type contact 622 of moving contact touches contact (6311 or 6321) of finger-type clapper-type fixed contact (631 or 632), moving contact can adjust within the specific limits, make its contact and the contact of fixed contact reach good face to contact.

On this basis, present invention also offers further improvement, elastic device has been set up in central part housing, namely be positioned at the center connecting plate 625 of moving contact the spring abutment being arranged with equal number, symmetric arrays that it passes the both sides in hole 6251, each spring abutment correspondence is held and is abutted the bottom of spring 627 of an equivalent specifications vertically upward, length, and the top of each spring 627 is respectively connected to the top 629 of corresponding setting in central part housing.

Figure 38 gives a kind of embodiment of setting up elastic device, the both sides that it passes hole 6251 are positioned at the center connecting plate 625 of moving contact, through the connecting hole 6283 that center connecting plate 625 has, a U-shaped spring housing 628 is fixed on center connecting plate each via connecting pin 6282, before two armstands of each U-shaped spring housing lay respectively at center connecting plate, rear side, and it is respectively provided with one as the spring-housing groove 6281 of spring abutment, each spring abutment correspondence is held and is abutted an equivalent specifications vertically upward, the bottom of the spring 627 of length, the top of each spring 627 is respectively connected to the corresponding top 629 arranged in central part housing.

Figure 40 gives the another kind of embodiment of setting up elastic device, as shown in the figure, be positioned on its plate body passing the both sides in hole 6251 at the center connecting plate 625 of moving contact, every side respectively has two spring-housing groove mouths (6252,6253) upward respectively, the effect of spring abutment is served as separately by each spring-housing groove mouth (6252,6253), each spring abutment correspondence is held and is abutted the bottom of spring 627 of an equivalent specifications vertically upward, length, and the top of each spring 627 is respectively connected to the top 629 of corresponding setting in central part housing.

Figure 41 is how spring assembly coordinates other parts to ensure the principle analysis figure of contact pressure

Visible with reference to accompanying drawing 41, under the effect of external force F, fulcrum X is at close moving contact clapper-type contact 622, left side place, move up on the right side of contact, spring compresses thereupon, provides downward effect counter-force, to ensure contact pressure, the better face of the maintenance between moving contact with fixed contact is contacted.

The moving contact of above-mentioned moving contact group is monolithic, during for situation about needing by big current, the thickness of this sheet moving contact of simple thickening, although moving contact itself can meet the requirement that big current passes through, due to enlarged in thickness, the problem of the clapper-type contact of moving contact and the point cantact of fixed contact can be more outstanding, can not only rely on above-mentioned gap adjustment just can solve very well, therefore, present invention also offers another kind of version, i.e. the moving contact group of double-disk:

As shown in Figure 42 to 46, double-disk moving contact group comprises:

The moving contact 620 that central part is identical with two plate shapes,

Described central part comprise circular by two before, Rear housing half (6212, 6212 ') docking coordinated the central part housing of the formation be fixed together by bolt 6261 and nut 6262, the circumferential edge of central part housing respectively has a moving contact plate portion passing hole (embodiment as shown in figure 35 with casing center symmetry, each moving contact plate portion passing hole is then by by the half bore (62121 that each half housing respectively has, 62121 ') formed after docking), the center of central part housing has for through main shaft 5 (namely in device for switching for the main shaft of transmission of power) and the passing hole 621 be set on main shaft, and the size shape of passing hole 621 and main shaft cross-sectional sizes mating shapes, guarantee that passing hole hole wall and main shaft 5 periphery fit, main shaft directly drives central part housing to rotate by passing hole thereupon.

Every sheet moving contact 620 comprises:

Be clipped on the center connecting plate 625 of (between forward and backward half housing) in central part housing, center connecting plate 625 center have for main shaft 5 pass through hole 6251 (as shown in figure 36), and through leaving space (i.e. main shaft 5 directly do not pass through this drive moving contact to rotate through hole 6251) hole 6251 and main shaft 5;

Also comprise, lay respectively at the both sides of center connecting plate 625 separately through an outwardly directed moving contact plate portion 624 of moving contact plate portion passing hole of central part housing, the moving contact plate portion of both sides realizes conducting to each other via the center connecting plate 625 of centre, the clapper-type contact 622 that the both sides that each moving contact plate portion 624 is also included in its outer end set firmly respectively and the blade type plug-in type contact 623 of an arc, and the clapper-type contact 622 in two moving contact plate portions 624 is all towards same direction.

Gap is left between moving contact plate portion 624 and moving contact plate portion passing hole;

The dividing plate 629 be made up of isolation material is also clamped between two panels moving contact 620, dividing plate 629 and the profiling of moving contact 620 shape, and dividing plate 629 is also provided with pass for main shaft 5 with contact center connecting plate 625 through hole 6251 shape and correspondence position identical through hole 6291.

As shown in Figure 42, Figure 44 to Figure 46, for guaranteeing two panels moving contact and dividing plate 629 better synchronous axial system, every sheet moving contact 620 has a synchronous hole 6252 in its both sides through hole 6251, and dividing plate front and back sides is the corresponding synchronizing shaft 6292 be provided with for stretching into respective synchronization hole 6252 then.

Simultaneously, moving contact group for double-disk sets up spring assembly, the version of spring assembly compare be suitable for as shown in figure 40 on every sheet moving contact, offer the form that spring-housing groove mouth (6252,6253) serves as spring abutment, this part repeats no more.

Adopt the moving contact group of double-disk, owing to there being two panels moving contact conductor, not only can play effective shunting action, even and if two panels moving contact synchronization action, but owing to having gap unavoidably between dividing plate, add the existence in other gaps, space for adjustment also increases to some extent, point cantact risk spreading existing for a slice is arrived in two panels, has effectively reduced the error owing to occurring in the processing of part and the welding process of silver point and conductor, the risk of the point cantact caused.

Present invention also offers the new structure of the blade type plug-in type fixed contact of two kinds of stationary contact head groups, one is one chip, and one is double-disk.

As Figure 47 to Figure 51 is depicted as one chip blade type plug-in type fixed contact, comprise copper bar 6332, U-shaped connecting plate 6333 and support 6334;

Described U-shaped connecting plate 6333 comprises the riser of bottom 63331 and both sides, and bottom it, 63331 are fixedly electrically connected with copper bar 6332, and the riser of its both sides is upwards followed successively by tilting section 63332 and vertical section 63333 from bottom 63331;

Described support 6334 comprise two be parallel to each other side by side and between leave and insert the connecting portion 63342 in gap, and be positioned at two connecting portion the same sides and the side plate 63341 be fixed together by two connecting portions, side plate 63341 and two connecting portions 63342 perpendicular, described insertion gap is inserted for the blade type plug-in type contact of moving contact, each connecting portion 63342 respectively has a riser for U-shaped connecting plate paralleled with insertion gap and stretches into from bottom to top and riser mounting groove accommodated therein, each connecting portion 63342 also respectively has a roller bearing slotted eye 633421 perpendicular and through with described riser mounting groove, the vertical section 63333 of a riser of described U-shaped connecting plate is through this roller bearing slotted eye 633421, and in the roller bearing slotted eye 633421 of another connecting portion side, be provided with a roller bearing 6335 in vertical section 63333 to abut against with vertical section, then abut successively in the roller bearing slotted eye 633421 of vertical section opposite side and have a spring 6336 and fixing end cap 6337, and roller bearing slotted eye 633421 is slightly less than the diameter of roller bearing 6335 towards the open height of opposite side connecting portion, and some can expose outside opening under the thrust of spring 6336 to make roller bearing, and the distance between two relative roller bearings on two connecting portions is slightly less than the thickness of the blade type plug-in type contact of moving contact.

For making the contact interference reducing other parts between connecting portion during the insertion gap of blade type plug-in type contact between insertion two connecting portion, contact is inserted more smooth and easy and more direct with the contact of roller bearing, towards another connecting portion roller bearing slotted eye opening part belonging to connecting portion inwall also convex be set as convex body 633422.

As shown in figure 47, for making roller bearing more smooth-going along the movement of roller bearing slotted eye, described roller bearing two ends are also convexly equipped with roller bearing post 63351, and roller bearing slotted eye 633421 two side also has the slide groove 633422 of coupling.

As shown in figure 51, distance between one chip blade type plug-in type fixed contact two roller bearing after having assembled is slightly less than the thickness of the blade type plug-in type contact of the moving contact coordinated with it, when having blade type plug-in type contact 623 no matter from upper or from below to when inserting the insertion gap of this fixed contact, blade type plug-in type contact 623 sidewall extrusion roller bearing 6335 moves to both sides, roller bearing 6335 remakes the riser vertical section 63333 of riser (in the present embodiment) for U-shaped connecting plate, make it laterally elastic deformation to occur, spring 6336 compresses thereupon, inside effect counter-force is provided, to ensure the contact of contact and roller bearing.

As Figure 52 to Figure 56 is depicted as double-disk blade type plug-in type fixed contact, comprise copper bar 6332, U-shaped connecting plate 6333 and the second U-shaped connecting plate 6333 ' and support 6334;

Described U-shaped connecting plate 6333 comprises the riser of bottom 63331 and both sides, and bottom it, 63331 are fixedly electrically connected with copper bar 6332, and the riser of its both sides is upwards followed successively by tilting section 63332 and vertical section 63333 from bottom 63331;

Described second U-shaped connecting plate 6333 ' has the bottom 63331 ' identical with U-shaped connecting plate 6333, the tilting section 63332 ' of two risers and vertical section 63333 ', the bottom 63331 ' of the second U-shaped connecting plate is fixedly electrically connected with copper bar and is positioned at the side of the bottom 63331 of U-shaped connecting plate 6333, second U-shaped connecting plate two risers be in same plane with the plate face of the riser of U-shaped connecting plate respectively, and the top of each vertical section 63333 ' of the second U-shaped connecting plate 6333 ' also horizontal expansion has one to be positioned at traversing section 63334 ' above the vertical section 63333 of correspondence of U-shaped connecting plate 6333,

Described support 6334 comprise two be parallel to each other side by side and between leave and insert the connecting portion 63342 in gap, and be positioned at two connecting portion the same sides and the side plate 63341 be fixed together by two connecting portions, side plate 63341 and two connecting portions 63342 perpendicular, described insertion gap is inserted for the blade type plug-in type contact of moving contact, each connecting portion 63342 respectively has a riser for U-shaped connecting plate and the second U-shaped connecting plate paralleled with insertion gap and stretches into from bottom to top and riser mounting groove accommodated therein, each connecting portion 63342 also respectively have in distribute up and down and the roller bearing slotted eye 633421 perpendicular and through with described riser mounting groove and the second roller bearing slotted eye 633421 ',

The vertical section 63333 of a riser of described U-shaped connecting plate 6333 is through roller bearing slotted eye 633421, and be provided with a roller bearing 6335 in vertical section 63333 in the roller bearing slotted eye 633421 of another connecting portion side to abut against with vertical section, then abutting successively in the roller bearing slotted eye 633421 of vertical section opposite side has a spring 6336 and fixing end cap 6337;

The traversing section 63334 ' of a riser of described second U-shaped connecting plate 6333 ' is through the second roller bearing slotted eye 633421 ', and be also provided with a roller bearing 6335 to abut against with traversing section 63334 ' in the second roller bearing slotted eye 633421 ' of traversing section 63334 ' towards another connecting portion side, also abutting successively in the second roller bearing slotted eye 633421 ' of traversing section 63334 ' opposite side has a spring 6336 and fixing end cap 6337;

Roller bearing slotted eye 633421 and the second roller bearing slotted eye 633421 ' are towards the diameter of the smaller roller bearing 6335 in the inner of open height of opposite side connecting portion, and some can expose outside opening under the thrust of respective spring 6336 to make roller bearing, and the distance between two relative roller bearings on two connecting portions is slightly less than the thickness of the blade type plug-in type contact of moving contact.

For making the contact interference reducing other parts between connecting portion during the insertion gap of blade type plug-in type contact between insertion two connecting portion, contact is inserted more smooth and easy and more direct with the contact of roller bearing, towards the connecting portion inwall belonging to the roller bearing slotted eye of another connecting portion and the opening part of the second roller bearing slotted eye also convex be set as convex body 633422.

As shown in figure 47, for making roller bearing more smooth-going along the movement of roller bearing slotted eye, described roller bearing two ends are also convexly equipped with roller bearing post 63351, and roller bearing slotted eye 633421 and the respective two side of the second roller bearing slotted eye 633421 ' also have the slide groove 633422 of coupling.

As shown in figure 51, distance between every two roller bearings of double-disk blade type plug-in type fixed contact after having assembled is slightly less than the thickness of the blade type plug-in type contact of the moving contact coordinated with it, when having blade type plug-in type contact 623 no matter from upper or from below to when inserting the insertion gap of this fixed contact, blade type plug-in type contact 623 sidewall extrusion roller bearing 6335 moves to both sides, roller bearing 6335 more corresponding act on U-shaped connecting plate the riser vertical section 63333 of riser (in the present embodiment) and the traversing section 63334 ' of the second U-shaped connecting plate, respectively make it laterally elastic deformation to occur, corresponding spring 6336 compresses thereupon, inside effect counter-force is provided, to ensure the contact of contact and roller bearing.Meanwhile, two U-shaped connecting plates also serve the effect of effectively shunting, and two panels conductor provides pressure by independently spring respectively, can ensure the reliability of contact pressure.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. can realize an operating mechanism for three kinds of state of switch electrical equipment, it is characterized in that,

Described operating mechanism (2) comprises energy storage interlock assembly, before and after energy storage interlock assembly comprises side by side and the front cheek (201) interfixed and rear cheek (202), before, rear cheek (201, 202) spindle drum wheel (203) is also provided with between, spindle drum wheel (203) includes cylindrical wheel body (2031), the each symmetry obliquely upward in wheel body (2031) both sides in the middle extends branch's convex body (2032, 2032 '), before wheel body (2031) two ends are stretched out respectively, rear cheek (201, 202) the seat wheel bore (2014 be provided with, 2024), before main shaft wheel seat (203) is limited in, also can around its wheel body (2031) axis rotation between rear cheek, wheel body (2031) also has spindle hole (2031 ') along axle center, for assembling main shaft (5), Liang Ge branch convex body (2032, 2032 ') a connecting rod pin-and-hole (2033 is respectively had, 2033 '), spindle hole (2031 ') and two connecting rod pin-and-holes (2033, 2033 ') center, hole is isosceles triangle arrangement, the hole of spindle hole (2031 ') is centrally located at corner point,

Liang Ge branch convex body (2032,2032 ') connects one group of connecting rod energy-storage units respectively separately;

Often organize connecting rod energy-storage units and comprise a pair lower link (204), connecting rod (205) on a pair, energy-stored spring (206) and a pair combined floodgate lever (207), relatively be fixed together by connecting plate (2041) between often pair of lower link (204), one end of lower link (204) and spindle drum take turns the coordination hinge of the connecting rod pin-and-hole (2033) of branch's convex body of (203), the other end of lower link (204) is provided with racetrack long pinhole (2042), and the length direction of long pinhole (2042) points to connecting rod pin-and-hole, one end of often pair of upper connecting rod (205) pass through between upper pin rod (2051) be relatively fixed together, and upper pin rod (2051) is also through the long pinhole (2042) of lower link, upper pin rod (2051) can move along its length in long pinhole (2042), the other end of often pair of upper connecting rod (205) is hinged respectively by the upper link point that forward and backward cheek (201,202) sets firmly (2015,2025 indication) and forward and backward cheek (201,202),

Each described combined floodgate lever comprises two panels side by side and the identical lever sheet (2071,2072) of shape, and the middle part of lever sheet (2071,2072) by be individually fixed in combined floodgate pin joint on forward and backward cheek (201,202) and forward and backward cheek hinged, by a plate (2073), two lever sheets (2071,2072) are fixed as one between a free end in the same way of two lever sheets (2071,2072); Energy-stored spring (206) one end connects upper pin rod (2051), and the other end is articulated with brace (2073) place of combined floodgate lever (207) by a spring pin rod (208); There is projection at the middle part of two lever sheets (2071,2072) towards all stretching above it, is fixed with a catch (2074) between the protruding apex of two lever sheets.

2. operating mechanism according to claim 1, it is characterized in that: also include Electronic control assembly, described Electronic control assembly comprises: main conjunction electro-magnet switch (210), standby close electro-magnet switch (210 '), two points of electro-magnet switch (211), main conjunction connecting rod (2102), standbyly close connecting rod, two points of connecting rods (2112), two sub lever (212) and twoly divide pull bars (213);

Each electro-magnet switch described is when powering up, and its iron core bounces back, and resets after power-off;

Main conjunction electro-magnet switch (210) and the standby iron core closing electro-magnet switch (210 ') and be fixed between forward and backward cheek respectively by attaching plate elements, and are positioned at the side-lower of one group of connecting rod energy-storage units upward separately; Main conjunction electro-magnet switch (210) and standby iron core corresponding hinged main conjunction connecting rod (2102), standby respective one end of closing connecting rod (2102 ') respectively of closing electro-magnet switch (210 '), main conjunction connecting rod, the standby other end closing connecting rod are respectively provided with the racetrack elongated hole (21021,21021 ') that a length direction points to the hinged place of connecting rod and iron core, combined floodgate lever and the hinged spring pin rod (208) of energy-stored spring are inserted in elongated hole, and can along the relative movement of elongated hole length direction in elongated hole;

Two points of electro-magnet switch (211) are then for iron core is towards the front being fixed on front cheek (201) of following formula, its iron core (2111) is hinged with one end of two points of connecting rods (2112), and the other end of two points of connecting rods (2112) is hinged with one end of two sub lever (212);

Described two points of pull bars (213) comprise base plate (2131), the forward and backward side of base plate is respectively extended with a riser (2132) vertically upward, the both sides at base plate (2131) middle part are each is extended with an articulated slab (21311) downwards, each articulated slab (21311) has the racetrack hinge hole (21312) that a length direction is parallel with base plate;

Forward and backward cheek (201,202) is positioned at main shaft (5) below and is respectively provided with a lifting apertures, the base plate (2131) of described two points of pull bars (213) is each passed through the lifting apertures of forward and backward cheek, and forward and backward cheek (201,202) is positioned between the riser (2132) of the both sides, front and back of two points of pull bars (213), the middle part of riser (2132) has the elongated hole (21321) passed through for main shaft (5), and the length direction of elongated hole (21321) is parallel with the lifting direction of two points of pull bars; Forward and backward cheek is positioned at above main shaft and is also respectively provided with a lead (2016), the riser (2132) of the both sides, front and back of two points of pull bars (213) has the gathering sill (21323) matched with lead (2016);

The middle part of two sub lever (212) is articulated with the bottom of the lifting apertures of the front cheek (201) of main shaft (5) below by jointed shaft (2121), and be positioned at the below of base plate (2131), the other end of two sub lever (212) is by the hinge hole (21312) of a jointed shaft through two points of pull bar (213) base plates, and this jointed shaft can move by the length direction along hinge hole in hinge hole (21312);

The pellet surface outwardly of another free end in the same way of the two lever sheets (2071,2072) of each combined floodgate lever (207,207 ') is also respectively fixed with a pin (2076), cant board (2132) top of the both sides, front and back of two points of pull bars (213) is respectively convexly equipped with a hook projection (21322) corresponding with pin (2076) to left and right outside, when two points of pull bars (213) be pulled move downward time, hook projection (21322) catches on pin (2076), drives two combined floodgate levers all to lift.

3. operating mechanism according to claim 1, is characterized in that: described catch (2074) also has the poke hole (2075) of a length direction perpendicular to two lever sheets.

4. operating mechanism according to claim 1, it is characterized in that: before main shaft (5) stretches out, rear cheek and be positioned at the lever sheet (2071 and 2071 ' of the same side of two combined floodgate levers, 2072 and 2072 ') between and be in it conplane position also respectively fixed cover one eccentric banking stop (214) is housed, the end of each lever sheet is convexly equipped with stopper section (2076 towards eccentric banking stop correspondence, 2076 '), and eccentric banking stop (214) is when rotating with main shaft (5), the stopper section that eccentric banking stop can avoid the combined floodgate lever of combined floodgate side wraps the upset route of lock pin joint, be barred from again the upset route of the stopper section of opposite side combined floodgate lever simultaneously.

5. operating mechanism according to claim 1, is characterized in that: on forward and backward cheek, also symmetry is provided with connecting rod upper limit (2011,2011 ', 2021,2021 ') and upper connecting rod lower limit (2012,2012 ', 2022,2022 ') on relevant position.

6. operating mechanism according to claim 1, it is characterized in that: the top of forward and backward cheek between two combined floodgate levers is provided with a dismountable guide vane end stop (215), when not installing this guide vane end stop (215), when combined floodgate lever rotates to touching cheek top, energy-stored spring is in no load state, after installing this guide vane end stop (215) additional, guide vane end stop (215) exceeds the top of cheek and its width meets combined floodgate lever rotates to when touching the sidewall of guide vane end stop (215), and its energy-stored spring is in load stress.