CN215770911U - Dual-power transfer switch - Google Patents

Abstract

A dual-power transfer switch belongs to the technical field of switching appliances. The device comprises an operating mechanism and a main shaft connected with the operating mechanism, wherein the main shaft is driven to rotate between a first contact closing position and a second contact closing position by the action of the operating mechanism, and the middle of the rotating stroke of the main shaft from one closing position to the other closing position is a middle position; the energy-saving device is characterized by further comprising an auxiliary closing mechanism connected with the main shaft, when the main shaft rotates from one closing position to the middle position, the main shaft drives the auxiliary closing mechanism to store energy, and when the main shaft rotates from the middle position to the other closing position, the auxiliary closing mechanism releases energy to provide assistance for the rotation of the main shaft. The advantages are that: the contact system can be helped to quickly reach the switching-on position, the requirement on the energy storage spring force value of the operating mechanism can be reduced, and the whole service life of the operating mechanism is prolonged.

Description

Dual-power transfer switch

Technical Field

The utility model belongs to the technical field of switching devices, and particularly relates to a dual-power transfer switch.

Background

The Automatic Transfer Switching Equipment (ATSE) is mainly applied to the power distribution networks of primary loads and secondary loads with relatively high requirements on power supply continuity in the fields of industry, medical treatment, post and telecommunications, petroleum, coal, metallurgy, rail transit, computer centers, military facilities, airports, fire fighting, important civil buildings and the like, and is used for ensuring the power supply continuity of the loads.

The high reliability, modularization and miniaturization of electrical products have been the development direction in the electrical technology field, and accordingly, more strict design requirements for reliability, modularization and miniaturization are provided for automatic transfer switching apparatuses which are important electrical apparatus components in the low-voltage apparatus category. Along with the improvement of short-time current tolerance and on-off breaking indexes of the automatic change-over switch, the contact pressure between a moving contact and a static contact of a contact system is correspondingly increased, in order to ensure the reliable action of a driving moving contact, the operating mechanism is required to provide larger closing energy, so that the mechanism spring energy of a structural system of the operating mechanism is correspondingly increased, under the requirement, the technical requirement on the mechanism spring is more severe on one hand, and the design requirement on parts such as a rotating lever for driving the mechanism spring to store energy is also increasingly improved on the other hand, the driving of higher spring force can generate corresponding adverse effects on the technical indexes such as the service life, the reliability and the like of the whole operating mechanism, in addition, the lifting of the force value and the strength requirement enables the sizes of the parts to be increased, and the development trend of modularization and miniaturization is not met. From the foregoing, it is known that the technical problem of finding a reasonable balance between the increase of the spring energy of the operating mechanism and the prevention of the damage to the service life of the whole operating mechanism and the reliability of the operating mechanism in service has been always troubled in the industry for a long time, and the technical solutions to be described below are generated in this context.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dual-power transfer switch which is beneficial to storing energy of part of opening energy of an operating mechanism and converting the stored energy into closing energy of the operating mechanism, can help a contact system to quickly reach a closing position, can reduce the requirement on the value of an energy storage spring force of the operating mechanism and is beneficial to prolonging the service life of the whole operating mechanism.

The task of the utility model is accomplished in such a way that a double-power-supply change-over switch comprises an operating mechanism and a main shaft connected with the operating mechanism, wherein the main shaft is driven to rotate between a first contact closing position and a second contact closing position by the action of the operating mechanism, and the middle of the rotating stroke of the main shaft from one closing position to the other closing position is an intermediate position; the energy-saving device is characterized by further comprising an auxiliary closing mechanism connected with the main shaft, when the main shaft rotates from one closing position to the middle position, the main shaft drives the auxiliary closing mechanism to store energy, and when the main shaft rotates from the middle position to the other closing position, the auxiliary closing mechanism releases energy to provide assistance for the rotation of the main shaft.

In one embodiment of the utility model, at the beginning of the stroke of the main shaft rotating from a closed position to a middle position, the auxiliary closing mechanism has an action idle stroke, and in the action idle stroke, the main shaft rotates without driving the auxiliary closing mechanism to store energy; after the action idle stroke is finished, the main shaft drives the auxiliary closing mechanism to store energy in the process of continuously rotating to the middle position.

In another embodiment of the present invention, the auxiliary closing mechanism includes a push rod assembly, a bracket and an elastic assembly, the push rod assembly is fixedly sleeved on the main shaft, the bracket is fixed on the operating mechanism at a position corresponding to the position right below the main shaft, one end of the elastic assembly is supported on the push rod assembly, and the other end of the elastic assembly is supported on the bracket; when the main shaft rotates from one closed position to the other closed position, the main shaft drives the push rod assembly to rotate, and the push rod assembly is separated from the elastic assembly in a linkage relationship, so that an action idle stroke of the auxiliary closing mechanism is formed; after the action idle stroke is finished, the main shaft drives the push rod assembly to rotate in the process that the main shaft continues to rotate to the middle position, and the push rod assembly causes the elastic assembly to be compressed to store energy; the resilient assembly is configured to release the force to assist rotation of the main shaft as the main shaft rotates from the intermediate position to the other closed position.

In another embodiment of the present invention, the push rod assembly has a driving end extending along the radial direction of the main shaft, a driving shaft is disposed at an end of the driving end, a sliding groove is disposed at an end of the elastic assembly, which is matched with the push rod assembly, and a depth of the sliding groove is greater than an outer diameter of the driving shaft; when the main shaft is at the two closed positions, the transmission shaft is at the notch position of the sliding groove, and when the main shaft rotates towards the middle position of the rotating stroke to the degree that the contact is just separated, the transmission shaft is at the groove bottom position of the sliding groove, and the process that the transmission shaft moves from the notch position of the sliding groove to the groove bottom position is the action idle stroke of the auxiliary closing mechanism.

In another embodiment of the present invention, the push rod assembly includes a push rod connecting shaft and a pair of push rods, the pair of push rods are identical in shape, structure and size and are arranged in parallel to each other, a push rod transmission cavity for engaging with the spindle sleeve is formed in the middle of each of the pair of push rods, an upper end circular hole is formed in each of the upper ends of the pair of push rods and at a position corresponding to each of the transmission ends, a lower end circular hole is formed in each of the lower ends of the pair of push rods and at a position corresponding to the transmission end, the push rod connecting shaft is located between the pair of push rods, and both ends of the push rod connecting shaft are riveted with the pair of push rods at a position corresponding to the upper end circular holes of the upper ends of the pair of push rods, and both ends of the transmission shaft are riveted with the pair of push rods at a position corresponding to the lower end circular holes.

In yet another embodiment of the present invention, the spindle has a spindle nose that mates with the pushrod drive cavity, the shape and size of the pushrod drive cavity being compatible with the shape and size of the spindle nose; and a transmission shaft groove is formed in the middle of the transmission shaft and around the transmission shaft.

In a further embodiment of the present invention, the bracket includes a pair of bracket plates which are disposed to face each other, a pair of side plate positioning post holes, a pair of bracket plate end connecting shaft holes and a bracket plate middle connecting shaft hole are formed on the pair of bracket plates at positions corresponding to each other, the number of the side plate positioning post holes is one on each of the pair of bracket plates and is respectively located at upper portions of both ends of the pair of bracket plates, the number of the bracket plate end connecting shaft holes is the same on each of the pair of bracket plates and is located below the side plate positioning post holes, the number of the bracket plate middle connecting shaft holes is one on each of the pair of bracket plates and is located below a middle portion in a length direction of the pair of bracket plates, a position between the bracket plate end connecting shaft holes corresponding to the pair of bracket plates is riveted by the bracket plate end connecting shaft, a position between the bracket plate middle connecting shaft holes corresponding to the pair of bracket plates is riveted by the bracket plate middle connecting shaft, a bracket plate middle connecting shaft groove is formed on the bracket plate middle connecting shaft and surrounds the circumferential direction of the bracket plate middle connecting shaft; and a pair of support plates of the support is sleeved on the operating mechanism through the side plate positioning column holes.

In a further embodiment of the present invention, the elastic assembly includes a guide bar and a pair of springs, the guide bar includes a first guide member i, a second guide member ii, a third guide member iii and a guide member connecting shaft, the first guide member i has one or a pair of sliding grooves opened at a top of the first guide member i, a guide member elongated groove is opened in a longitudinal direction at a middle portion of the first guide member i on the first guide member i, a guide member upper positioning boss is formed at each of both sides of an upper portion of the first guide member i, the second guide member ii has a pair of guide member connecting boss formed at each of both sides of a lower portion of the second guide member ii, the pair of second guide members ii are respectively positioned at both sides of the first guide member i, and a guide member connecting upper riveting hole is opened at an upper portion of the second guide member ii, a pair of guide member connecting boss is opened at each of both sides of a lower portion of the second guide member ii, and a guide member semicircular groove is formed at a center position of a lower portion of the second guide member ii One end of a guide connecting shaft is inserted into the guide connecting shaft head on the second guide part II on the right side of the pair of second guide parts II after penetrating through the guide connecting shaft head riveting hole and is riveted with the second guide part II on the right side, and a pair of connecting shafts are arranged in a sliding manner at positions corresponding to the elongated grooves of the guide parts and have shaft heads at two ends respectively inserted into the guide connecting shaft head riveting hole and are riveted with the guide connecting shaft head on the upper riveting hole and the second guide part II on the right side of the pair of second guide parts II And the pair of springs are respectively arranged between the upper positioning boss of the guide piece and the lower positioning boss of the guide piece.

In yet another embodiment of the present invention, the sliding groove is a semi-circular groove with a bottom matching the driving shaft groove on the driving shaft, and the depth of the sliding groove is larger than the diameter of the driving shaft groove.

In yet another embodiment of the present invention, the operating mechanism includes a side plate, two spring mechanisms disposed on the side plate and forming a symmetrical relationship with respect to the main shaft, and the main shaft is disposed on the side plate and connected to the two spring mechanisms respectively; the pair of support plates of the support are sleeved on the side plates through the side plate positioning column holes, positioning columns are arranged on the side plates and corresponding to the side plate positioning column holes, and the pair of support plates of the support are sleeved on the positioning columns through the side plate positioning column holes.

The technical scheme provided by the utility model has the technical effects that: because the auxiliary closing mechanism connected with the main shaft is additionally arranged in the structural system of the dual-power transfer switch, in the two closed positions of the first contact and the second contact, when the main shaft rotates from one closed position of the two closed positions to the middle position of the rotating stroke from one closed position to the other closed position, the main shaft drives the auxiliary closing mechanism to store energy, and when the main shaft rotates from the middle position to the other closed position of the two closed positions, the auxiliary closing mechanism can release energy to provide auxiliary force for the rotation of the main shaft, so that the requirement of the contact system on quickly reaching the closing position can be met, the requirement on the energy storage spring force value of the operating mechanism can be reduced, and the whole service life of the operating mechanism can be prolonged.

Drawings

Fig. 1 is an assembly schematic diagram of an operating mechanism, a main shaft, an auxiliary closing mechanism and a positioning plate of a dual power transfer switch of the utility model.

Fig. 2 is a schematic view of a spindle nose of the spindle shown in fig. 1.

Fig. 3 is a detailed configuration diagram of a push rod assembly of the structural system of the auxiliary closing mechanism shown in fig. 1.

Fig. 4 is a detailed structural view of a guide bar of an elastic member of the structural system of the auxiliary closing mechanism shown in fig. 1.

Fig. 5 is a detailed structural view of a holder of a structural system of the auxiliary closing mechanism shown in fig. 1.

Fig. 6a is a schematic diagram of the main shaft in the first contact closing position and the auxiliary closing mechanism in the energy releasing state when the first power source is in the on position.

Fig. 6b is a schematic diagram of the auxiliary closing mechanism when the operating mechanism drives the main shaft to rotate counterclockwise by a certain angle first and the main shaft drives the moving contact to move from the closing position to the just-separated position.

Fig. 6c is a schematic diagram of the auxiliary closing mechanism when the main shaft continues to rotate counterclockwise to the middle position under the action of the mechanism spring of the operating mechanism.

Fig. 6d is a schematic diagram of the auxiliary closing mechanism in which the main shaft rotates counterclockwise and the main shaft drives the moving contact of the contact system to move from the middle position to the closing position under the action of the mechanism spring of the operating mechanism.

FIG. 7 is a schematic diagram of a two-position dual power transfer switch.

FIG. 8 is a schematic diagram of a three-position dual power transfer switch in a dual-split position.

FIG. 9 is a schematic diagram of a three-position dual power transfer switch with the main shaft in a first contact closed position.

Fig. 10 is an exploded view of the overall structure of the dual power transfer switch of the present invention.

Detailed Description

Referring to fig. 10 in combination with fig. 1, the present invention provides a dual power transfer switch operating mechanism 1, a main shaft 2, an auxiliary closing mechanism 3, a positioning plate 4, a contact module 5, a position signal module 6, a signal conversion module 7, a mounting plate 8, an indication auxiliary module 9, a manual operating lever 100, a manual/automatic operating module 101 (i.e., a manual or automatic operating module), a controller 102, or a controller 103 (i.e., a first controller i or a second controller ii), etc., which achieve the above-mentioned objects and achieve the above-mentioned technical effects. The aforementioned components are arranged substantially in both the X-direction and the Z-direction, centered on the positioning plate 4.

As shown in fig. 1 and 10, the positioning plate 4 has an L-shaped longitudinal cross section, specifically, the positioning plate 4 includes a horizontally disposed bottom plate and a positioning side plate vertically disposed at one edge portion of the bottom plate, and the operating mechanism 1 is fixed to the horizontally disposed bottom plate.

With particular reference to fig. 1, the dual power transfer switch includes an operating mechanism 1 and a main shaft 2 disposed on the operating mechanism 1, the main shaft 2 is driven by the operation of the operating mechanism 1 to rotate between a first contact closing position and a second contact closing position, wherein the first contact closing position is a first power on position, the second contact closing position is a second power on position, and the power is in an off state during the rotation of the main shaft 2 between the two closing positions. The middle of the travel of the spindle 2 from one of the two closed positions to the other is the middle position, i.e. the travel from the closed position to the middle position is half the travel from the one closed position to the other closed position.

The technical key points of the technical scheme provided by the utility model are as follows: in the structure system of the dual power supply changeover switch, an auxiliary closing mechanism 3 connected with the main shaft 2 is further included, when the main shaft 2 rotates from one of the two closed positions to the middle position, the main shaft 2 drives the auxiliary closing mechanism 3 to store energy, and when the main shaft 2 rotates from the middle position to the other closed position, the auxiliary closing mechanism 3 releases energy to provide assistance for the rotation of the main shaft 2.

During the process of rotating the main shaft 2 from one of the two closed positions to the other closed position, for example, from the first contact closed position to the second contact closed position, in the first half stroke, i.e., from the first contact closed position to the middle position (which is the middle position of the entire stroke and is not necessarily a stable position, i.e., the main shaft 2 may stop at this position, or may directly rotate through this position without stopping), the main shaft drives the auxiliary closing mechanism 3 to store energy, and the time when the main shaft reaches the middle position of the stroke is the dead point position of the auxiliary closing mechanism 3, and in the second half stroke after the main shaft passes through the middle position and moves to the second contact closed position, the auxiliary closing mechanism 3 releases the assistance to provide the rotation of the main shaft 2.

The auxiliary closing mechanism 3 is installed between the positioning plate 4 and the operating mechanism 1, and is arranged in parallel with the operating mechanism 1.

The auxiliary closing mechanism 3 comprises a push rod assembly 31, a bracket 32 and an elastic assembly 33, wherein the push rod assembly 31 is fixedly sleeved on the main shaft 2, the bracket 32 is fixed on the operating mechanism 1 at a position corresponding to the position right below the main shaft 2, one end of the elastic assembly 33 is supported on the push rod assembly 31, and the other end of the elastic assembly 33 is supported on the bracket 32; when the main shaft 2 rotates to the middle position in one of the two closed positions, the main shaft 2 drives the push rod assembly 31 to rotate, the elastic assembly 33 is compressed to store energy, and when the main shaft 2 rotates to the other closed position in the two closed positions in the middle position, the elastic assembly 33 releases energy to provide assistance for the rotation of the main shaft 2.

A further preferred embodiment of the utility model provides that: at the beginning of the stroke of the main shaft 2 rotating from a closed position to a middle position, the auxiliary closing mechanism 3 has an action idle stroke, and in the action idle stroke, the main shaft 2 rotates without driving the auxiliary closing mechanism 3 to store energy; after the action idle stroke is finished, the main shaft 2 drives the auxiliary closing mechanism 3 to store energy in the process of continuously rotating to the middle position by the main shaft 2.

The specific working process is as follows: when the main shaft 2 starts to rotate from one closed position to another closed position, the main shaft 2 drives the push rod assembly 31 to rotate, and the push rod assembly 31 is separated from the linkage relation with the elastic assembly 33, so that an action idle stroke of the auxiliary closing mechanism 3 is formed; after the action idle stroke is finished, in the process that the main shaft 2 continues to rotate to the middle position, the main shaft 2 drives the push rod assembly 31 to rotate, and the push rod assembly 31 causes the elastic assembly 33 to compress to store energy; when the main shaft 2 rotates from the middle position to the other closed position, the elastic component 33 can provide assistance for the rotation of the main shaft 2.

Referring to fig. 3 in conjunction with fig. 1 and 4, the push rod assembly 31 has a transmission end 310, the transmission end 310 extends along the radial direction of the main shaft 2, a transmission shaft 3101 is disposed at an end of the transmission end 310, a sliding groove 33111 (shown in fig. 4) is disposed at an end of the elastic assembly 33, which is engaged with the push rod assembly 31, the sliding groove 33111 has a depth greater than the outer diameter of the transmission shaft 3101, when the main shaft 2 is at the two closed positions, the transmission shaft 3101 is at the notch position of the sliding groove 33111, and when the main shaft 2 rotates to the middle position of the rotation stroke to the extent that the contacts are just separated, the transmission shaft 3101 is at the bottom position of the sliding groove 33111. The process of the transmission shaft 3101 moving from the notch position of the slide slot 33111 to the slot bottom position is the operation idle stroke of the auxiliary closing mechanism 3.

Please refer to fig. 3, the push rod assembly 31 includes a push rod connecting shaft 312 and a pair of push rods 311, the pair of push rods 311 are formed in the same shape, structure and size and are parallel to each other, a push rod transmission cavity 3111 for engaging with the spindle 2 is formed in the middle of the pair of push rods 311, an upper circular hole 3112 is formed at the upper end of the pair of push rods 311 and at a position corresponding to the transmission end 310, a lower circular hole 3113 is formed at the lower end of the pair of push rods 311 and at a position corresponding to the transmission end 310, the push rod connecting shaft 312 is located between the pair of push rods 311, the two ends of the push rod connecting shaft 312 are riveted with the pair of push rods 311 at a position corresponding to the upper circular hole 3112 at the upper end of the pair of push rods 311, and the two ends of the transmission shaft 3101 are riveted with the pair of push rods 311 at a position corresponding to the lower circular hole 3113.

The spindle 2 has a spindle head 21 engaged with the push rod driving chamber 3111, and since the shape and size of the push rod driving chamber 3111 are adapted to the shape and size of the spindle head 21, the push rod assembly 31 and the spindle 2 can be synchronously rotated. A drive shaft groove 31011 is formed in the middle of the drive shaft 3101 and around the drive shaft 3101.

Referring to fig. 2 and fig. 1, the spindle 2 is fixedly sleeved with the above-mentioned spindle nose 21, a square hole 212 having a cross-sectional shape fitting with the spindle 2 is formed at an axial center of the spindle nose 21, i.e., at a central portion of one end of the spindle nose 21, the spindle nose 21 is fitted with the spindle 2 through the square hole 212, and the other end of the spindle nose 21 is rotatably disposed on a rotating hole 41 (shown in fig. 1) of a positioning side plate (i.e., a positioning plate 4), so that the spindle 2 is connected with a rotating bracket in the contact module 5, and a requirement for driving the movable contact to operate is met. The contour surface formed on the outer surface of the spindle head 21 shown in fig. 2 is formed as a pushrod transmission chamber engagement surface 211, and the pushrod assembly 31 is rotated in synchronization with the spindle by the pushrod transmission chamber engagement surface 211 being engaged with the pushrod transmission chamber 3111 shown in fig. 3.

Referring to fig. 5, the bracket 32 includes a pair of bracket plates 321, the pair of bracket plates 321 are disposed opposite to each other, a pair of side plate positioning post holes 3211, a pair of bracket plate end connecting shaft holes 3212 and a bracket plate middle connecting shaft hole 3213 are respectively formed on the pair of bracket plates 321 at positions corresponding to each other, the number of the side plate positioning post holes 3211 is one pair on each of the pair of bracket plates 32 and is respectively located at upper portions of both ends of the pair of bracket plates 321, a pair of bracket plate end connecting shaft holes 3212 is also one pair on each of the pair of bracket plates 321 and is located below the side plate positioning post holes 3211, the number of the bracket plate middle connecting shaft holes 3213 is one on each of the pair of bracket plates 321 and is located below a middle portion in a length direction of the pair of bracket plates 321, a position between the aforementioned bracket plate end connecting shaft holes 3212 corresponding to the pair of bracket plates 321 is riveted by the bracket plate end connecting shaft 322, a supporting plate middle connecting shaft groove 3231 is riveted by a supporting plate middle connecting shaft 323 at a position between the supporting plate middle connecting shaft holes 3213 corresponding to the pair of supporting plates 321, on the supporting plate middle connecting shaft 323 and around the circumferential direction of the supporting plate middle connecting shaft 323; the pair of holder plates 321 of the holder 32 are fitted to the operating mechanism 1 through the side plate positioning post holes 3211.

Referring to fig. 4 in combination with fig. 1 and 6a to 6d, the elastic member 33 includes a guide rod 331 and a pair of springs 332 (fig. 1 and 6a to 6 d), the guide rod 331 includes a first guide i 3311, a second guide ii 3312, a third guide iii 3313 and a guide connecting shaft 3314, the first guide i 3311 includes a pair (two) of the first guide i 3311 in this embodiment, but one of the first guide i 3311 may be used, the sliding groove 33111 is formed at the top of the first guide i 3311, a guide elongated groove 33112 is formed on the first guide i 3311 and in the middle of the first guide i 3311 in a longitudinal direction, a guide positioning boss 13 is formed on each of the first guide i 1 on each of both sides of the upper portion of the first guide i 3311, the second guide ii 3312 includes a pair, the pair of the second guide ii 3312 are respectively located on each of both sides of the first guide 3311, and a guide connecting hole 33121 is formed on the upper portion of the second guide ii 3312, a pair of guide link spindle head inserting lower fastening holes 33122 are formed on both sides of the lower portion of the second guide ii 3312, a guide semicircular groove 33123 having a downward opening is formed at a central position of the lower portion of the second guide ii 3312, the number of the third guide iii 3313 is two, i.e., four, in this embodiment, but a pair (i.e., two) may be used, a guide lower positioning boss 31 is upwardly extended from the third guide iii 3313, a pair of guide link spindle head fastening holes 33132 is formed in the third guide iii 3313, one end of a guide link spindle 3314 is inserted into the guide link spindle head inserting lower fastening hole 33122 of the left one of the pair of second guides ii 3312 and is fastened to the left one of the second guides ii 3312, and the other end of the guide link spindle head 3314 is inserted into the right one of the pair of second guides ii 3312 after passing through the guide link spindle head fastening hole 33132 The guide connecting spindle head of the second guide member ii 3312 is inserted into the lower anchoring hole 33122 and anchored to the right one of the second guide members ii 3312, a pair of connecting shafts 3315 are slidably disposed at positions corresponding to the elongated grooves 33112 of the guide members, the spindle heads at both ends of the pair of connecting shafts 3315 are inserted into the guide connecting spindle head insertion upper anchoring hole 33121 and anchored to the second guide member ii 3312, and a pair of springs 332 are provided between the guide upper positioning boss 33113 and the guide lower positioning boss 33131, respectively.

As shown in fig. 4 and fig. 6a to 6d, the sliding groove 33111 has a semicircular bottom portion matching the driving shaft groove 31011 of the driving shaft 3101, and the sliding groove 33111 has a depth larger than the diameter of the driving shaft groove 31011.

As shown in fig. 1, the operating mechanism 1 includes a side plate 11, and two spring mechanisms 12 disposed on the side plate 11 and forming a symmetrical relationship with respect to the main shaft 2, wherein the main shaft 2 is disposed on the side plate 11 and connected to the two spring mechanisms 12 respectively; the pair of bracket plates 321 of the bracket 32 are fitted to the side plate 11 through the side plate positioning post holes 3211.

A positioning post 111 is provided on the side plate 11 and corresponding to the side plate positioning post hole 3211, and the pair of holder plates 321 of the holder 32 are fitted to the positioning post 111 through the side plate positioning post hole 3211.

Fig. 1 also shows positioning holes 42 opened in the pair of positioning plates 4, and the pair of positioning posts 11 riveted to the side plate 11 on one side of the operating mechanism 1 pass through the positioning holes 42 to position the operating mechanism with respect to the positioning plates 4.

Referring to fig. 10 in combination with fig. 1, a plurality of contact modules 5 are fixed on the other side of a positioning plate 4 of an operating mechanism 1 relative to the positioning plate 4, a moving contact assembly is rotatably disposed in each contact module 5, a pair of fixed contacts is disposed relative to the moving contact assembly, the moving contact assembly includes a rotating bracket and a moving contact guide rod, the middle portion of the moving contact guide rod is disposed on the rotating bracket, two ends of the moving contact guide rod symmetrically extend out of a circumferential side surface of the rotating bracket, when one contact end of the moving contact guide rod extending out of the circumferential side surface of the rotating bracket contacts with one corresponding fixed contact, the first contact is in a first contact closing position, at this time, a first power is turned on, when the other contact end of the moving contact guide rod contacts with one corresponding fixed contact, the second contact is in a second contact closing position, at this time, a second power is turned on. The first power supply and the second power supply are both disconnected during rotation of the rotating bracket of the movable contact assembly from the first contact closed position to the second contact closed position and from the second contact closed position to the first contact closed position.

The other side of the operating mechanism 1 is provided with a position signal module 6 for connection, and the position signal of the operating mechanism 1 is output by driving a microswitch on the position signal module 6 by a driving seat which rotates synchronously with the main shaft 2.

The signal switching module 7 is provided with a signal sampling line, and a part of the sampling line is electrically connected with the contact module 5 to detect a main loop voltage signal; one part of the sampling lines are electrically connected with a microswitch on the position signal module 6 to detect the position signal of the mechanism. The signal transfer module 7 can be directly connected with the controller 102 and feeds back signals to the controller 102; the signal transfer module 7 can be indirectly connected with the controller 103 through a cable, and feeds back signals to the controller 103.

The mounting plate 8 is fixed with the multi-pole contact module 5, the indication auxiliary module 9 is fixed on the other side of the mounting plate 8, and the indication auxiliary module 9 is provided with an indication device and an auxiliary signal output device for feeding back the contact position state of the contact system 5. The manual lever 100 can be mounted directly on the mounting seat of the indication aid module 9.

The manual/automatic operation module 101 (i.e., "manual or automatic operation module", the same applies hereinafter) is provided with a manual/automatic switching toggle button, an isolation padlock device, and a manual operation window. The manual/automatic operation module 101 is installed above the operation mechanism 1 and cooperates with the operation mechanism 1.

One of the controllers (102 or 103) can be installed, and the controller 102 is a basic controller, has simple function and compact structure and is installed with the switch body in an integrated manner; the controller 103 is an advanced controller, has rich functions, is more modular in structure and is installed with the switch body in a split mode.

The dual power transfer switch may be a two position switch including only the two closed positions described above, i.e., the operating mechanism and contact arrangement are not parked during the transfer from the first power on to the second power on. The dual power transfer switch can also be designed as a three-position switch with a double-split position between the first contact-closed position and the second contact-closed position, which is generally in the middle of the travel of the rotary holder in rotation from one closed position to the other closed position, i.e. the operating mechanism and the contact arrangement can remain in this middle position in which both the first power supply and the second power supply are open.

Referring to fig. 7, in the dual-power transfer switch in two positions, the operating mechanism includes two spring mechanisms 12 symmetrical with respect to the main shaft 2, and the main shaft 2 is connected to the two spring mechanisms 12 respectively. Each spring mechanism 12 includes a rotating lever 121 pivoted to the side plate 11, an upper link 122 pivoted to the side plate 11, a lower link 123 having one end hinged to the upper link 122 and the other end connected to a driving arm 221 of the main shaft 2, and a mechanism spring 124 having one end hung on the rotating lever 121 and the other end hung on a hinge point of the upper and lower links. The main shaft 2 has two symmetrically disposed drive arms 221 and 222 (which may be referred to as "left drive arm 221 and right drive arm 222", respectively) and is "V" shaped. The rotation lever 121 can be electrically driven by a corresponding electromagnetic driving mechanism, and can also be manually driven by pulling the rotation lever to rotate. The pivoting levers 121 of the two spring mechanisms 12 are connected to one another via a connecting rod 10.

The conversion process is as follows: as shown in fig. 7, the second power source is in a closed state, that is, the spindle 2 is located at the second contact closing position. In the process, the power supply is switched to drive the left rotating lever 121 to rotate anticlockwise, the left mechanism spring 124 is pulled to store energy, when the left mechanism spring 124 passes the dead point (the mechanism spring 124 presses the upper link 122), the mechanism spring 124 releases energy, pulling the left lower link 123 downward, while driving the left rotating lever 121 to act, the right rotating lever 121 is driven by the connecting rod 10 to rotate anticlockwise, thereby driving the right mechanism spring 124 to store energy, releasing energy after the right mechanism spring 124 passes a dead point, pulling the right lower connecting rod 123 to move upwards, under the combined action of the left and right lower connecting rods 123, the main shaft 2 is pulled to rotate counterclockwise, and after passing through the middle position (the left driving arm 221 and the right driving arm 222 are at the same horizontal height, refer to the position of the main shaft 2 in fig. 8), the main shaft 2 reaches a first power supply switching-on position, and the main shaft 2 is located at a first contact closing position.

Referring to fig. 8, in the three-position dual power transfer switch, the operating mechanism includes two spring mechanisms 12 symmetrical with respect to the main shaft 2, and the main shaft 2 is connected to the two spring mechanisms 12, respectively. On the basis of the above, that is, on the basis of the structure of the operating mechanism 1 of the two-position dual power transfer switch, a pair of locking devices 13 are further added, each of which is arranged corresponding to one of the spring mechanisms 12, and each locking device 13 includes a lock catch 131 for maintaining the locking tendency with the upper link 122 by an elastic member and a lock catch 132 for maintaining the locking tendency with the lock catch 131 by an elastic member.

The conversion process is as follows:

referring to fig. 8 and 9, the dual-split position to the first power-on position is first described: the state shown in fig. 8 is a double-split position, that is, the first power supply and the second power supply are both in an off state, in this position, the left latch 132 is pushed to rotate counterclockwise by a hand or by an intermediate electromagnet in an electric manner to release the latch state (unlock) from the left latch 131, the left latch 131 rotates counterclockwise to release the latch state (unlock) from the left upper link 122, so that the left lower link 123 can be pulled by the left mechanism spring 124 in the energy storage state to move downward, thereby driving the spindle 2 to rotate counterclockwise to reach the first power supply closing position, as shown in fig. 9, that is, the spindle 2 reaches the first contact closing position. In the process, the hasp, the latch and the upper connecting rod on the right side are kept to be in the hasp position and do not act.

From a first power-on position to a double-split position: in the first power-on position of fig. 9, the right rotating lever 121 is driven to rotate clockwise manually or electrically by the right electromagnet, the right mechanism spring 124 is driven to store energy, and the right mechanism spring 124 is kept in the energy storage state because the right upper link is in a state of being snapped with the right latch 131. In the process that the right rotating lever 121 rotates clockwise, the connecting rod 10 drives the left rotating lever 121 to rotate clockwise, the left mechanism spring 124 is pulled to store energy, when the left mechanism spring 124 passes through a dead point, the left lower connecting rod 123 is pulled to move upwards, the main shaft 2 is pulled to rotate anticlockwise, and the middle position (the left driving arm 221 and the right driving arm 222 are at the same horizontal height, refer to the position of the main shaft 2 in fig. 8) is reached, namely, the double-split position.

Referring to fig. 6a to 6d, the applicant describes the operation process of the auxiliary closing mechanism 3 in the following:

as shown in fig. 6a, the switch is in the first power position, i.e. the main shaft 2 is in the first contact closing position, the auxiliary closing mechanism 3 is in the energy release state, i.e. the pair of springs 332 are in the free length and are not compressed, and there is a small distance between the bottom surface of the arc of the sliding groove 33111 of the first guide member i 3311 of the guide rod 331 and the transmission shaft groove 31011 of the transmission shaft 3101 of the push rod assembly 31;

as shown in fig. 6b, under manual or electric operation, the main shaft 2 of the operating mechanism 1 rotates counterclockwise by about 5 to 10 °, the spindle heads 21 rotate synchronously by the same angle, the spindle heads 21 drive the movable contacts of the contact system from the closing position to the just-separating position on the one hand, and drive the push rod assembly 31 to rotate synchronously by the same angle counterclockwise on the other hand, so that the transmission shaft groove 31011 of the transmission shaft 3101 on the push rod assembly 31 is just contacted with the arc end surface (groove bottom surface) of the sliding groove 33111 of the first guide i 3311 on the guide rod 331, and at this time, the auxiliary closing mechanism 3 is still in the energy release state, that is, the spring 332 is in the free length and is not compressed. The beneficial place of the above process is that the auxiliary closing mechanism 3 has no influence on the rigid-breaking speed of the movable contact, that is, in the process of this stage, the mechanism spring 124 releases energy to drive the main shaft 2, so that in the process of controlling the movable and stationary contacts of the first power supply from the closed position to the rigid-breaking position, the transmission shaft groove 31011 of the transmission shaft 3101 goes through the idle stroke inside the sliding groove 33111, and the spring 332 is not compressed, so that the spring 332 does not influence the above movement of the movable and stationary contacts, that is, the auxiliary closing mechanism 3 has no influence on the separation speed of the movable and stationary contacts from the closed position to the rigid-breaking position, and in the process of arc lengthening during the contact-breaking, the arc caused by the slow separation speed is prevented from staying at the contacts to ablate the contacts, thereby ensuring the electrical life of the contacts and even the whole switch.

As shown in fig. 6c, under the action of the mechanism spring 124 of the operating mechanism 1, the main shaft 2 continues to rotate counterclockwise to the middle position (the middle position of the stroke of the main shaft from the contact closing position to the contact closing position, for the two-position transfer switch, the main shaft rotates from the contact closing position to the contact closing position, although the middle position is not stopped, but still passes through the middle position in the whole rotation stroke, for the three-position transfer switch, the main shaft 2 stops at the middle position of the rotation stroke as the third position of the switch, i.e. the double-split position), referring to fig. 8, the left and right driving arms 221, 222 (i.e. the left and right driving arms mentioned above) of the main shaft 2 are at the same horizontal height position, the main shaft 2 drives the shaft head 21 to rotate continuously, and the shaft head 21 drives the movable contact of the contact system from the closing position to the middle opening position on one hand, on the other hand, push rod assembly 31 is driven to compress spring 332, push rod assembly 31, guide rod 331 and bracket 32 are approximately at the dead point position, and auxiliary closing mechanism 3 is at the energy storage position. The energy stored in the auxiliary closing mechanism 3 comes completely from the opening energy of the mechanism spring 124 of the operating mechanism 1.

As shown in fig. 6d, under the action of the mechanism spring 124 of the operating mechanism 1, the main shaft 2 continues to rotate counterclockwise, the main shaft 2 drives the spindle head 21 to continue to rotate, on one hand, the spindle head 21 drives the moving contact of the contact system to move from the interrupted position to the closed position, on the other hand, the push rod assembly 31 is driven to rotate counterclockwise, so that the push rod assembly 31 and the guide rod 331 are separated from the dead point position, the spring 332 starts to release energy, the spring 332 pushes the first guide member i 3311 of the guide rod 331, the first guide member i 3311 pushes the push rod assembly 31 to rotate counterclockwise, so as to push the main shaft 2 to rotate counterclockwise synchronously, at this time, the mechanism spring 124 of the operating mechanism 1 and the spring 332 of the auxiliary closing mechanism 3 push the main shaft 2 to rotate simultaneously, and the main shaft 2 pushes the moving contact of the contact system to move to the closed position, that is, the auxiliary closing mechanism 3 has the effect of auxiliary closing.

In summary, the auxiliary closing mechanism is added to store energy of a part of opening energy of the operating mechanism and then convert the energy into closing energy of the operating mechanism, so that the contact system can quickly reach the closing position, the closing speed is increased, the requirement on the energy storage spring force value of the operating mechanism is reduced, and the overall service life of the operating mechanism is prolonged.

In the above embodiment, a transmission shaft groove 31011 is formed around the transmission shaft 3101 at the middle of the transmission shaft 3101 disposed at the end of the transmission end 310 of the push rod assembly, and at this time, the depth of the sliding groove 33111 formed at the end of the elastic assembly, which is engaged with the push rod assembly 31, is greater than the shaft diameter of the transmission shaft 3101 at the position of the transmission shaft groove 31011, and the bottom of the sliding groove 33111 is a semicircle shape which is engaged with the transmission shaft groove 31011. It can also be: instead of providing the drive shaft 3101 with the drive shaft groove 31011, the depth of the slide groove 33111 may be larger than the shaft diameter of the drive shaft 3101, and the bottom of the slide groove 33111 is formed in a semicircular shape adapted to the drive shaft 3101. It should satisfy: when the main shaft 2 is at the two closed positions, the transmission shaft 3101 is at the opening position of the sliding groove 33111, when the main shaft 2 rotates to just separate the contacts, the transmission shaft 3101 is at the bottom position of the sliding groove 33111, i.e. during the process of moving and static contacts from closed to just separated positions, the transmission shaft 3101 runs through the semi-long groove, i.e. the idle stroke in the sliding groove 33111 (transmission shaft 3101), and the spring 332 is not compressed, so the spring 332 does not influence the motion of the moving and static contacts, i.e. the auxiliary closing mechanism 3 does not influence the separation speed of the moving and static contacts from closed to just separated, and during the process of arc elongation during the contact separation, the arc is prevented from staying at the contacts due to the slow separation speed to ablate the contacts, and the electrical life of the contacts and even the whole switch is ensured.

Claims (10)

1. A dual-power transfer switch comprises an operating mechanism (1) and a main shaft (2) connected with the operating mechanism (1), wherein the main shaft (2) is driven to rotate between a first contact closing position and a second contact closing position by the action of the operating mechanism (1), and the middle of the rotating stroke of the main shaft (2) from one closing position to the other closing position is an intermediate position; the energy-saving device is characterized by further comprising an auxiliary closing mechanism (3) connected with the main shaft (2), when the main shaft (2) rotates from one closing position to the middle position, the main shaft (2) drives the auxiliary closing mechanism (3) to store energy, and when the main shaft (2) rotates from the middle position to the other closing position, the auxiliary closing mechanism (3) releases energy to provide assistance for the rotation of the main shaft (2).

2. A dual power transfer switch according to claim 1, wherein at the beginning of the stroke of the main shaft (2) from a closed position to an intermediate position, the auxiliary closing mechanism (3) has an action idle stroke, during which the main shaft (2) rotates without driving the auxiliary closing mechanism (3) to store energy; after the action idle stroke is finished, the main shaft (2) drives the auxiliary closing mechanism (3) to store energy in the process of continuously rotating to the middle position.

3. The dual-power transfer switch according to claim 2, wherein the auxiliary closing mechanism (3) comprises a push rod assembly (31), a bracket (32) and an elastic assembly (33), the push rod assembly (31) is fixedly sleeved on the main shaft (2), the bracket (32) is fixed on the operating mechanism (1) at a position corresponding to the position right below the main shaft (2), one end of the elastic assembly (33) is supported on the push rod assembly (31), and the other end of the elastic assembly (33) is supported on the bracket (32); when the main shaft (2) rotates from one closed position to the other closed position at the beginning of the stroke, the main shaft (2) drives the push rod assembly (31) to rotate, and the push rod assembly (31) is separated from the linkage relation with the elastic assembly (33) to form the action idle stroke of the auxiliary closing mechanism (3); after the action idle stroke is finished, in the process that the main shaft (2) continues to rotate to the middle position, the main shaft (2) drives the push rod assembly (31) to rotate, and the push rod assembly (31) causes the elastic assembly (33) to be compressed to store energy; when the main shaft (2) rotates from the middle position to the other closed position, the elastic component (33) can provide assistance for the rotation of the main shaft (2).

4. The dual power transfer switch of claim 3, wherein the push rod assembly (31) has a transmission end (310), the transmission end (310) extends along the radial direction of the main shaft (2), a transmission shaft (3101) is disposed at the end of the transmission end (310), a sliding groove (33111) is formed at the end of the elastic assembly (33) which is matched with the push rod assembly (31), and the depth of the sliding groove (33111) is greater than the outer diameter of the transmission shaft (3101); when the main shaft (2) is at the two closed positions, the transmission shaft (3101) is at the notch position of the sliding groove (33111), and when the main shaft (2) rotates to the middle position of the rotating stroke to the extent that the contacts are just separated, the transmission shaft (3101) is at the groove bottom position of the sliding groove (33111), and the process that the transmission shaft (3101) moves from the notch position of the sliding groove (33111) to the groove bottom position is the action idle stroke of the auxiliary closing mechanism (3).

5. The dual power transfer switch of claim 4, wherein the push rod assembly (31) comprises a push rod connection shaft (312) and a pair of push rods (311), the pair of push rods (311) have the same shape, structure and size and are arranged in parallel to each other, a push rod transmission cavity (3111) for sleeving and matching with the spindle (2) is formed in the middle of each push rod (311), an upper end circular hole (3112) is formed in each of the upper ends of the pair of push rods (311) and in a position corresponding to each other, a lower end circular hole (3113) is formed in each of the lower ends of the pair of push rods (311) and in a position corresponding to the transmission end (310), the connection shaft push rod (312) is located between the pair of push rods (311) and both ends of the push rod connection shaft (312) are riveted with the pair of push rods (311) at a position corresponding to the upper end circular hole (3112) of the pair of push rods (311), and two ends of the transmission shaft (3101) are fixedly riveted with the pair of push rods (311) at positions corresponding to the lower round holes (3113).

6. The dual-power transfer switch of claim 5, wherein the spindle (2) has a spindle head (21) matching with the push rod transmission cavity (3111), and the shape and size of the push rod transmission cavity (3111) are adapted to the shape and size of the spindle head (21); a transmission shaft groove (31011) is formed in the middle of the transmission shaft (3101) and around the transmission shaft (3101).

7. The dual power transfer switch of claim 6, wherein the bracket (32) comprises a pair of bracket plates (321), the pair of bracket plates (321) are disposed opposite to each other, a pair of side plate positioning post holes (3211), a bracket plate end connecting shaft hole (3212), and a bracket plate middle connecting shaft hole (3213) are formed on the pair of bracket plates (321) at positions corresponding to each other, the number of the side plate positioning post holes (3211) is equal to that on the pair of bracket plates (321) and located at upper portions of both ends of the pair of bracket plates (321), the number of the bracket plate end connecting shaft holes (3212) on the pair of bracket plates (321) is equal to that on a pair and located below the side plate positioning post holes (3211), the number of the bracket plate middle connecting shaft holes (3213) on the pair of bracket plates (321) is equal to that on one and located below a middle portion in a length direction of the pair of bracket plates (321), the positions between the end part connecting shaft holes (3212) of the support plates corresponding to the pair of support plates (321) are riveted by a support plate end part connecting shaft (322), the positions between the middle part connecting shaft holes (3213) of the support plates corresponding to the pair of support plates (321) are riveted by a support plate middle part connecting shaft (323), and a support plate middle part connecting shaft groove (3231) is formed on the support plate middle part connecting shaft (323) and in the circumferential direction around the support plate middle part connecting shaft (323); a pair of support plates (321) of the support (32) is sleeved on the operating mechanism (1) through the side plate positioning column holes (3211).

8. The dual power transfer switch of claim 7, wherein the elastic member (33) comprises a guide bar (331) and a pair of springs (332), the guide bar (331) comprises a first guide member I (3311), a second guide member II (3312), a third guide member III (3313) and a guide member connecting shaft (3314), the first guide member I (3311) has one or a pair, the sliding groove (33111) is formed at the top of the first guide member I (3311), a guide member elongated groove (33112) is formed in the first guide member I (3311) and in the middle of the first guide member I (3311) in a longitudinal direction, a guide member positioning boss (33113) is formed on each of both sides of the upper portion of the first guide member I (3311), the second guide member II (3312) has a pair, the pair of second guide members (3312) are respectively located on both sides of the first guide member I (3311), and a guide connecting spindle head inserting upper riveting hole (33121) is formed at the upper part of the second guide ii (3312), a pair of guide connecting spindle head inserting lower riveting holes (33122) is formed at both sides of the lower part of the second guide ii (3312), a guide semicircular groove (33123) having a downward notch is formed at the center position of the lower part of the second guide ii (3312), one or two pairs of third guides iii (3313) are provided, a guide lower positioning boss (33131) upwardly extends on the third guide iii (3313), and a pair of guide connecting spindle head riveting holes (33132) is formed on the third guide iii (3313), one end of a guide connecting shaft (3314) is inserted into the guide connecting lower riveting hole (33122) on the left one second guide ii (3312) among the pair of second guides ii (3312) and is riveted to the left second guide ii (3312), and the other end of the guide connecting shaft (3314) is inserted into the right one of the second guide ii (3312) of the pair of second guides ii (3312) after passing through the guide connecting stub riveting hole (33132), the guide connecting stub is inserted into the lower riveting hole (33122) and riveted with the right one of the second guides ii (3312), a pair of connecting shafts (3315) are slidably provided at positions corresponding to the guide elongated groove (33112), stub shafts at both ends of the pair of connecting shafts (3315) are respectively inserted into the guide connecting stub inserting upper riveting hole (33121) and riveted with the second guide ii (3312), and a pair of springs (332) are respectively provided between the guide upper positioning boss (33113) and the guide lower positioning boss (33131).

9. The dual power transfer switch of claim 6, wherein the sliding groove (33111) is a semi-circular groove with a bottom matching the driving shaft groove (31011) on the driving shaft (3101), and the depth of the sliding groove (33111) is larger than the diameter of the driving shaft groove (31011).

10. The dual power transfer switch of claim 7, wherein the operating mechanism (1) comprises a side plate (11), two spring mechanisms (12) disposed on the side plate (11) and forming a symmetrical relationship with respect to the main shaft (2), the main shaft (2) is disposed on the side plate (11) and connected to the two spring mechanisms (12) respectively; the pair of support plates (321) of the support (32) are sleeved on the side plate (11) through the side plate positioning column holes (3211), positioning columns (111) are arranged on the side plate (11) and correspond to the side plate positioning column holes (3211), and the pair of support plates (321) of the support (32) are sleeved on the positioning columns (111) through the side plate positioning column holes (3211).

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