A dual power supply switch

Abstract

A dual power conversion switch belongs to the technical field of switch electrical appliances. It includes an operating mechanism and a main shaft connected to the operating mechanism, the operation of the operating mechanism drives the main shaft to rotate between the two closed positions of the first contact closed position and the second contact closed position, and the middle of the stroke of the main shaft rotating from one closed position to the other closed position is the middle position; it also includes an auxiliary closing mechanism connected to the main shaft, when the main shaft rotates from one closed 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 closed position, the auxiliary closing mechanism releases energy to provide assistance for the rotation of the main shaft. Advantages: It can not only help the contact system quickly reach the closed position, but also reduce the force requirements for the energy storage spring of the operating mechanism, which is beneficial to improving the overall service life of the operating mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of switch electrical appliances, and in particular relates to a dual power supply conversion switch. Background Art

[0002] Automatic transfer switching equipment (ATSE) is mainly used in the distribution network of primary and secondary loads with relatively high requirements for power supply continuity in the fields of industry, medical treatment, post and telecommunications, petroleum, coal, metallurgy, rail transportation, computer centers, military facilities, airports, fire protection and important civil buildings to ensure the continuity of load power supply.

[0003] High reliability, modularization and miniaturization of electrical products have long become the development direction of the electrical technology field. Accordingly, more stringent reliability, modularization and miniaturization design requirements have been put forward for automatic transfer switch electrical appliances, which are important electrical components in the low-voltage electrical category. With the improvement of the short-time withstand current and the connection and disconnection index of the automatic transfer switch, the contact pressure between the moving and static contacts of the contact system increases accordingly. In order to ensure the reliable operation of the moving contact, the operating mechanism needs to provide a larger closing energy, so that the mechanism spring energy of the structural system of the operating mechanism also increases accordingly. Under this requirement, on the one hand, the technical requirements for the mechanism spring are more stringent, and on the other hand, the design requirements for the rotating lever and other components used to store energy for the driving mechanism spring are also increasingly improved. The driving of higher spring force will have a corresponding adverse effect on the technical indicators such as the life and reliability of the entire operating mechanism. In addition, the increase in force and strength requirements increases the size of components, which does not conform to the development trend of modularization and miniaturization. From the above, it can be seen that the technical problem of how to find a reasonable balance between increasing the energy of the operating mechanism spring and preventing damage to the service life of the entire operating mechanism and ensuring its reliability during its service has long been a problem that has plagued the industry. The technical solution to be introduced below was produced under this background. Summary of the invention

[0004] The task of the present invention is to provide a dual power conversion switch that helps to store a part of the opening energy of the operating mechanism and then convert the accumulated stored energy into the closing energy of the operating mechanism, thereby helping the contact system to quickly reach the closing position and reducing the requirements on the force value of the energy storage spring of the operating mechanism and helping to increase the overall service life of the operating mechanism.

[0005] The task of the present invention is accomplished in this way. A dual power conversion switch includes an operating mechanism and a main shaft connected to the operating mechanism. The action of the operating mechanism drives the main shaft to rotate between two closed positions, namely a first contact closed position and a second contact closed position. The middle of the rotation stroke of the main shaft from one closed position to another closed position is an intermediate position; and it also includes an auxiliary closing mechanism connected to the main shaft. When the main shaft rotates from one closed position to the intermediate position, the main shaft drives the auxiliary closing mechanism to store energy, and when the main shaft rotates from the intermediate position to the other closed position, the auxiliary closing mechanism releases energy to provide assistance for the rotation of the main shaft.

[0006] In one embodiment of the present invention, at the beginning of the rotation of the main shaft from a closed position to an intermediate position, the auxiliary closing mechanism has an action idle stroke, within which the main shaft rotates without driving the auxiliary closing mechanism to store energy; after the end of the action idle stroke, the main shaft continues to rotate toward the intermediate position, and the auxiliary closing mechanism is driven by the main shaft to store energy.

[0007] 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 sleeved on the main shaft, the bracket is fixed on the operating mechanism at a position corresponding to directly 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 is initially rotating from one closed position to another closed position, the main shaft drives the push rod assembly to rotate and the push rod assembly and the elastic assembly are disengaged from the linkage relationship, forming an idle stroke of the auxiliary closing mechanism; after the end of the idle stroke, the main shaft continues to rotate toward the middle position, and the main shaft drives the push rod assembly to rotate, and the push rod assembly causes the elastic assembly to compress and store energy; when the main shaft rotates from the middle position to another closed position, the elastic assembly releases energy to provide assistance for the rotation of the main shaft.

[0008] In another embodiment of the present invention, the push rod assembly has a transmission end, which extends radially along the main shaft, and a transmission shaft is arranged at the end of the transmission end. A sliding groove is opened at the end of the elastic component that cooperates with the push rod assembly, and the depth of the sliding groove is greater than the outer diameter of the transmission shaft; when the main shaft is in the two closed positions, the transmission shaft is at the notch position of the sliding groove, and when the main shaft rotates toward the middle position of the rotation stroke to the extent that the contacts are just separated, the transmission shaft is at the bottom position of the sliding groove, and the process of the transmission shaft moving from the notch position of the sliding groove to the bottom position of the groove is the action idle stroke of the auxiliary closing mechanism.

[0009] In another embodiment of the present invention, the push rod assembly includes a push rod connecting shaft and a pair of push rods, the push rods have the same shape, structure and size and are arranged parallel to each other, and a push rod transmission cavity for cooperating with the main shaft sleeve is formed in the middle part of the pair of push rods, an upper circular hole is provided at the upper end of the pair of push rods and at a corresponding position, and a lower circular hole is provided at the lower end 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 to the pair of push rods at the position corresponding to the upper end circular holes of the pair of push rods, and both ends of the transmission shaft are riveted to the pair of push rods at the position corresponding to the lower end circular holes.

[0010] In another embodiment of the present invention, the main shaft has a main shaft head that cooperates with the push rod transmission cavity, and the shape and size of the push rod transmission cavity are adapted to the shape and size of the main shaft head; a transmission shaft groove is formed in the middle of the transmission shaft and around the transmission shaft.

[0011] In a further embodiment of the present invention, the bracket comprises a pair of bracket plates, which are arranged face to face with each other, and a side plate positioning column hole, a bracket plate end connecting shaft hole and a bracket plate middle connecting shaft hole are respectively formed on the pair of bracket plates and at corresponding positions, the number of the side plate positioning column holes is one pair on each of the pair of bracket plates and are respectively located at the upper parts of the two ends of the pair of bracket plates, the number of the bracket plate end connecting shaft holes on each of the pair of bracket plates is also one pair and are located below the side plate positioning column holes, the number of the bracket plate middle connecting shaft holes on each of the pair of bracket plates is one and is located below the middle part of the length direction of the pair of bracket plates, the bracket plate end connecting shaft is riveted at the position corresponding to the bracket plate end connecting shaft holes on the pair of bracket plates, the bracket plate middle connecting shaft is riveted at the position corresponding to the bracket plate middle connecting shaft holes on the pair of bracket plates, and a bracket plate middle connecting shaft groove is formed on the bracket plate middle connecting shaft and around the circumferential direction of the bracket plate middle connecting shaft; the pair of bracket plates of the bracket are sleeved on the operating mechanism through the side plate positioning column holes.

[0012] In a further embodiment of the present invention, the elastic component includes a guide rod and a pair of springs, the guide rod 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, the sliding groove is opened at the top of the first guide member I, a guide member long strip groove is opened in a longitudinal state on the first guide member I and located in the middle of the first guide member I, and a guide member upper positioning boss is formed on both sides of the upper part of the first guide member I, the second guide member II has a pair, the pair of second guide members II are respectively located on both sides of the first guide member I, and a guide member connecting shaft head is opened on the upper part of the second guide member II, and a pair of guide member connecting shaft heads are opened on both sides of the lower part of the second guide member II, and a guide member semicircular groove with a notch downward is formed in the center position of the lower part of the second guide member II, the number of the third guide member III is one pair or two The third guide member III is provided with a guide lower positioning boss extending upward, and a pair of guide connecting shaft head riveting holes are opened on the third guide member III, one end of the guide connecting shaft is inserted into the guide connecting shaft head on the left side of the second guide member II of the pair of second guide members II and is riveted to the second guide member II on the left side, and the other end of the guide connecting shaft is inserted into the guide connecting shaft head on the right side of the second guide member II of the pair of second guide members II after passing through the guide connecting shaft head riveting hole and is riveted to the second guide member II on the right side, a pair of connecting shafts are slidably arranged at the position corresponding to the long strip groove of the guide, the shaft heads at both ends of the pair of connecting shafts are respectively inserted into the guide connecting shaft head and the upper riveting hole and are riveted to the second guide member II, and a pair of springs are respectively arranged between the guide upper positioning boss and the guide lower positioning boss.

[0013] In yet another embodiment of the present invention, the sliding groove is semicircular in shape with a bottom portion adapted to the transmission shaft groove on the transmission shaft, and the depth of the sliding groove is greater than the diameter of the transmission shaft groove.

[0014] In yet another embodiment of the present invention, the operating mechanism includes a side plate, two spring mechanisms arranged on the side plate and forming a symmetrical relationship with respect to the main shaft, the main shaft is passed through the side plate and is respectively connected to the two spring mechanisms; a pair of bracket plates of the bracket are mounted on the side plate through the side plate positioning column holes, and positioning columns are arranged on the side plate and corresponding to the side plate positioning column holes, and a pair of bracket plates of the bracket are mounted on the positioning columns through the side plate positioning column holes.

[0015] The technical effect of the technical solution provided by the present invention is that: since an auxiliary closing mechanism connected to the main shaft is added to the structural system of the dual power conversion switch, in the two closed positions where the first and second contacts are closed, when the main shaft rotates from one of the two closed positions to the middle position of the rotation 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 of the two closed positions, the auxiliary closing mechanism releases energy to assist the rotation of the main shaft, thereby being able to help the contact system quickly reach the closing position and reduce the requirements on the force value of the energy storage spring of the operating mechanism and is beneficial to improving the overall service life of the operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic assembly diagram of the operating mechanism, main shaft, auxiliary closing mechanism and positioning plate of the dual power conversion switch of the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of the spindle head of the spindle is shown.

[0018] Figure 3 for Figure 1 Detailed structural diagram of the push rod assembly of the structural system of the auxiliary closing mechanism shown.

[0019] Figure 4 for Figure 1 Detailed structural diagram of the guide rod of the elastic component of the structural system of the auxiliary closing mechanism shown.

[0020] Figure 5 for Figure 1 Detailed structural diagram of the bracket of the structural system of the auxiliary closing mechanism shown.

[0021] Figure 6a It is a schematic diagram showing that the main shaft is in the first contact closing position and the auxiliary closing mechanism is in the energy releasing state when the first power supply is in the on position.

[0022] Figure 6b It is a schematic diagram of the auxiliary closing mechanism in which the operating mechanism drives the main shaft to rotate counterclockwise for a certain angle first and the main shaft drives the moving contact from the closing position to the just-released position.

[0023] Figure 6c Under the action of the mechanism spring of the operating mechanism, the main shaft continues to rotate counterclockwise to the middle position, schematic diagram of the auxiliary closing mechanism.

[0024] Figure 6dUnder the action of the mechanism spring of the operating mechanism, 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. Schematic diagram of the auxiliary closing mechanism.

[0025] Figure 7 Schematic diagram of a two-position dual power transfer switch.

[0026] Figure 8 The diagram is a schematic diagram of a three-position dual power transfer switch in the double-off position.

[0027] Fig. 9 The schematic diagram is a three-position dual power transfer switch with the main shaft in the first contact closed position.

[0028] Fig.10 The figure is an exploded view of the overall structure of the dual power conversion switch of the present invention. DETAILED DESCRIPTION

[0029] See also Fig.10 And combined with Figure 1 The present invention provides a dual power conversion 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 can achieve the above-mentioned invention purpose and embody the above-mentioned technical effects. The above-mentioned parts are arranged in two directions, namely, the X direction and the Z direction, with the positioning plate 4 as the center.

[0030] Depend on Figure 1 and Fig.10 As shown, the longitudinal section of the positioning plate 4 is L-shaped. Specifically, the positioning plate 4 includes a horizontally arranged bottom plate and a vertically arranged positioning side plate at an edge of one side of the bottom plate. The operating mechanism 1 is fixed on the horizontally arranged bottom plate.

[0031] See the key points Figure 1 The dual power conversion switch includes an operating mechanism 1 and a main shaft 2 arranged on the operating mechanism 1. The operation of the operating mechanism 1 drives the main shaft 2 to rotate between the first contact closing position and the second contact closing position. The first contact closing position is the first power connection position, and the second contact closing position is the second power connection position. When the main shaft 2 rotates between the two closing positions, the power is disconnected. The middle of the rotation stroke of the main shaft 2 from one of the two closing positions to the other is the middle position, that is, the stroke from the closing position to the middle position is half of the stroke from one closing position to the other closing position.

[0032] The technical key points of the technical solution provided by the present invention are as follows: in the structural system of the dual power conversion switch, there is also an auxiliary closing mechanism 3 connected to the above-mentioned main shaft 2, 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 of the two closed positions, the auxiliary closing mechanism 3 releases energy to provide assistance for the rotation of the main shaft 2.

[0033] In the process of the main shaft 2 rotating 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 of the stroke, that is, from the first contact closed position to the middle position (this position is the middle position of the entire stroke, and this position is not necessarily a stable position, that is, the main shaft 2 can stay at this position, or it can directly rotate through this position without stopping), the main shaft drives the auxiliary closing mechanism 3 to store energy, and when it reaches the middle position of the stroke, it is the dead point position of the auxiliary closing mechanism 3. After passing the middle position, in the second half of the stroke moving to the second contact closed position, the auxiliary closing mechanism 3 releases energy to provide assistance for the rotation of the main shaft 2.

[0034] The aforementioned auxiliary closing mechanism 3 is installed between the aforementioned positioning plate 4 and the operating mechanism 1 , and is arranged side by side with the operating mechanism 1 .

[0035] 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 sleeved on the main shaft 2. The bracket 32 ​​is fixed on the operating mechanism 1 at a position corresponding to the position directly 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 of the two closed positions to the middle position, the main shaft 2 drives the push rod assembly 31 to rotate, and the elastic assembly 33 is compressed to store energy. When the main shaft 2 rotates from the middle position to the other of the two closed positions, the elastic assembly 33 releases energy to assist the rotation of the main shaft 2.

[0036] A further preferred design of the present invention is: at the beginning of the stroke of the main shaft 2 rotating from a closed position to an intermediate position, the auxiliary closing mechanism 3 has an action idle stroke, within which the main shaft 2 rotates without driving the auxiliary closing mechanism 3 to store energy; after the end of the action idle stroke, the main shaft 2 continues to rotate toward the intermediate position, and the auxiliary closing mechanism 3 is driven by the main shaft 2 to store energy.

[0037] The specific working process is as follows: at the beginning of the rotation of the main shaft 2 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 and the elastic assembly 33 are disconnected from the linkage relationship, forming an action idle stroke of the auxiliary closing mechanism 3; after the end of the action idle stroke, the main shaft 2 continues to rotate toward the middle position, and 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 and store energy; when the main shaft 2 rotates from the middle position to another closed position, the elastic assembly 33 releases energy to provide assistance for the rotation of the main shaft 2.

[0038] See also Figure 3 And combined with Figure 1 and Figure 4 The push rod assembly 31 has a transmission end 310, which extends radially along the main shaft 2. A transmission shaft 3101 is provided at the end of the transmission end 310. A sliding groove 33111 is provided at one end of the elastic assembly 33 that matches the push rod assembly 31 ( Figure 4 ), the depth of the sliding groove 33111 is greater than the outer diameter of the transmission shaft 3101. When the main shaft 2 is in the two closed positions, the transmission shaft 3101 is at the notch position of the sliding groove 33111. When the main shaft 2 rotates toward 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 sliding groove 33111 to the bottom position of the groove is the idle stroke of the auxiliary closing mechanism 3.

[0039] Please see the key Figure 3 The push rod assembly 31 comprises a push rod connecting shaft 312 and a pair of push rods 311. The push rods 311 have the same shape, structure and size and are arranged parallel to each other. A push rod transmission cavity 3111 for being sleeved and matched with the main shaft 2 is formed in the middle of the push rods 311. An upper circular hole 3112 is provided at the upper end of the push rods 311 and at a corresponding position, and a lower circular hole 3113 is provided at the lower end of the push rods 311 and at a position corresponding to the transmission end 310. The push rod connecting shaft 312 is located between the push rods 311 and the two ends of the push rod connecting shaft 312 are riveted to the pair of push rods 311 at the position corresponding to the upper circular hole 3112 of the upper end of the push rods 311, and the two ends of the transmission shaft 3101 are riveted to the pair of push rods 311 at the position corresponding to the lower circular hole 3113.

[0040] The spindle 2 has a spindle head 21 that matches the push rod transmission cavity 3111. Since the shape and size of the push rod transmission cavity 3111 are adapted to the shape and size of the spindle head 21, the push rod assembly 31 and the spindle 2 can rotate synchronously. A transmission shaft groove 31011 is formed in the middle of the transmission shaft 3101 and around the transmission shaft 3101.

[0041] See also Figure 2 And combined with Figure 1 The spindle 2 is sleeved with the spindle head 21 mentioned above, and a square hole 212 whose cross-sectional shape matches the spindle 2 is opened in the axial center of the spindle head 21, that is, in the center of one end of the spindle head 21. The spindle head 21 is fitted with the spindle 2 by the square hole 212. The other end of the spindle head 21 is rotatably arranged in the rotation hole 41 ( Figure 1 As shown), the main shaft 2 is connected to the rotating bracket in the contact module 5, thereby meeting the requirements for driving the moving contact. Figure 2 The contour surface formed on the outer surface of the spindle head 21 shown in FIG. 1 is formed as a push rod transmission cavity matching surface 211, and the push rod transmission cavity matching surface 211 is connected with the push rod transmission cavity matching surface 211. Figure 3 The push rod transmission chamber 3111 shown cooperates to make the push rod assembly 31 rotate synchronously with the main shaft.

[0042] See also Figure 5 The bracket 32 ​​comprises a pair of bracket plates 321, which are arranged face to face with each other. A side plate positioning column hole 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 and at corresponding positions. The number of the side plate positioning column holes 3211 is one pair on each of the pair of bracket plates 321 and is respectively located at the upper part of the two 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 also one pair on each of the pair of bracket plates 321 and is located below the side plate positioning column holes 3211. The number of the bracket plate middle connecting shaft holes 3213 on the pair of bracket plates 321 is one pair. There is one each and is located below the middle of the length direction of a pair of bracket plates 321, and is riveted by a bracket plate end connecting shaft 322 at a position corresponding to the aforementioned bracket plate end connecting shaft holes 3212 on the pair of bracket plates 321, and is riveted by a bracket plate middle connecting shaft 323 at a position corresponding to the aforementioned bracket plate middle connecting shaft holes 3213 on the pair of bracket plates 321, and a bracket plate middle connecting shaft groove 3231 is formed on the bracket plate middle connecting shaft 323 and around the circumferential direction of the bracket plate middle connecting shaft 323; the pair of bracket plates 321 of the aforementioned bracket 32 ​​are mounted on the aforementioned operating mechanism 1 through the aforementioned side plate positioning column holes 3211.

[0043] Please refer to Figure 4 And combined with Figure 1 , Figures 6a to 6d The elastic component 33 includes a guide rod 331 and a pair of springs 332 ( Figure 1 as well as Figures 6a to 6d As shown in the figure, the guide rod 331 includes 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 aforementioned first guide member I 3311 has a pair (two) in this embodiment, but one can also be used. The aforementioned sliding groove 33111 is opened on the top of the first guide member I 3311, and a guide member long strip groove 33112 is opened in the middle of the first guide member I 3311 in a longitudinal state on the first guide member I 3311 and located on both sides of the upper part of the first guide member I 3311. A guide member upper positioning boss 33113 is formed. The aforementioned There is a pair of second guide members II 3312, which are respectively located on both sides of the first guide member I 3311, and a guide member connecting shaft head is provided at the upper part of the second guide member II 3312. A pair of guide member connecting shaft heads are provided at both sides of the lower part of the second guide member II 3312. A guide member semicircular groove 33123 with a notch downward is formed at the center of the lower part of the second guide member II 3312. The number of the third guide members III 3313 in this embodiment is two pairs, i.e., four, but a pair (i.e., one pair) can also be used. Two guide members are used), and a guide lower positioning boss 33131 is extended upward on the third guide member III3313, and a pair of guide connecting shaft head riveting holes 33132 are opened on the third guide member III3313, one end of the guide connecting shaft 3314 is inserted into the left second guide member II3312 of the aforementioned pair of second guide members II3312. The aforementioned guide connecting shaft head on the left side of the second guide member II3312 is probed into the lower riveting hole 33122 and is riveted to the left second guide member II3312, and the other end of the guide connecting shaft 3314 is inserted into the pair of second guide members II3312 after passing through the aforementioned guide connecting shaft head riveting hole 33132. On a second guide member II3312 on the right side of member II3312, the aforementioned guide member connecting shaft head is inserted into the lower rivet hole 33122 and is riveted to the second guide member II3312 on the right side. A pair of connecting shafts 3315 are slidably provided at positions corresponding to the aforementioned guide member long strip grooves 33112. The shaft heads at both ends of the pair of connecting shafts 3315 are respectively inserted into the aforementioned guide member connecting shaft heads and inserted into the upper rivet hole 33121 and are riveted to the aforementioned second guide member II3312. A pair of springs 332 are respectively arranged between the aforementioned guide member upper positioning boss 33113 and the aforementioned guide member lower positioning boss 33131.

[0044] Depend on Figure 4 as well as Figures 6a to 6dAs shown, the sliding groove 33111 is semicircular in shape with a bottom that matches the transmission shaft groove 31011 on the transmission shaft 3101 , and the depth of the sliding groove 33111 is greater than the diameter of the transmission shaft groove 31011 .

[0045] Depend on Figure 1 As shown, the operating mechanism 1 includes a side plate 11, two spring mechanisms 12 arranged on the side plate 11 and forming a symmetrical relationship with respect to the main shaft 2, the main shaft 2 is passed through the side plate 11 and is respectively connected to the two spring mechanisms 12; a pair of bracket plates 321 of the bracket 32 ​​are sleeved on the side plate 11 through the side plate positioning column holes 3211.

[0046] A positioning column 111 is provided on the side plate 11 and corresponds to the side plate positioning column hole 3211 , and a pair of bracket plates 321 of the bracket 32 ​​are sleeved on the positioning column 111 through the side plate positioning column hole 3211 .

[0047] exist Figure 1 Also shown are positioning holes 42 opened on a pair of positioning plates 4 , through which a pair of positioning posts 11 riveted to a side plate 11 on one side of the operating mechanism 1 pass, thereby positioning the operating mechanism relative to the positioning plates 4 .

[0048] See also Fig.10 And combined with Figure 1 On the other side of the positioning plate 4 of the operating mechanism 1, a plurality of contact modules 5 are fixed relative to the positioning plate 4. A moving contact assembly is rotatably arranged in each contact module 5. A pair of static contacts are arranged relative to the moving contact assembly. The moving contact assembly includes a rotating bracket and a moving contact guide rod. The middle part of the moving contact guide rod is arranged on the rotating bracket. Both ends of the moving contact guide rod symmetrically extend out of the circumferential side of the rotating bracket. When one of the contact ends of the moving contact guide rod extending out of the circumferential side of the rotating bracket contacts with a corresponding static contact, it is the first contact closing position. At this time, the first power supply is connected. When the other contact end of the moving contact guide rod contacts with a corresponding static contact, it is the second contact closing position. At this time, the second power supply is connected. In the process of the rotating bracket of the moving contact assembly rotating from the first contact closing position to the second contact closing position, and in the process of rotating from the second contact closing position to the first contact closing position, both the first power supply and the second power supply are disconnected.

[0049] The other side of the operating mechanism 1 is connected with a position signal module 6 , and the position signal of the operating mechanism 1 is output by driving the micro switch on the position signal module 6 through the driving seat that rotates synchronously with the main shaft 2 .

[0050] The signal adapter module 7 is provided with a signal sampling line, a part of which is electrically connected to the contact module 5 to detect the main circuit voltage signal; a part of which is electrically connected to the micro switch on the position signal module 6 to detect the mechanism position signal. The signal adapter module 7 can be directly connected to the controller 102 to feed back the signal to the controller 102; the signal adapter module 7 can be indirectly connected to the controller 103 through a cable to feed back the signal to the controller 103.

[0051] The mounting plate 8 is fixed to the multi-pole contact module 5, and the indicating auxiliary module 9 is fixed to the other side of the mounting plate 8. The indicating auxiliary module 9 is provided with an indicating device and an auxiliary signal output device for feeding back the contact position state of the contact system 5. The manual operating lever 100 can be directly mounted on the mounting seat of the indicating auxiliary module 9.

[0052] The manual / automatic operation module 101 (i.e., "manual or automatic operation module", the same below) is provided with a manual / automatic switching button, an isolation padlock device, and a manual operation window. The manual / automatic operation module 101 is installed above the operating mechanism 1 and cooperates with the operating mechanism 1 for operation.

[0053] The controller (102 or 103) can be installed in one of the following ways: Controller 102 is a basic controller with simple functions, compact structure, and is installed integrally with the switch body; Controller 103 is an advanced controller with rich functions, more modular structure, and is installed separately from the switch body.

[0054] The dual power conversion switch can be a two-position switch including only the above two closed positions, that is, the operating mechanism and the contact device do not stay in the process of switching from the first power supply to the second power supply. The dual power conversion switch can also be designed as a three-position switch, with a double open position between the first contact closed position and the second contact closed position. The double open position is generally the middle position of the rotation stroke of the rotating bracket from one closed position to another closed position, that is, the operating mechanism and the contact device can stay in the middle position and remain in the double open position where the first power supply and the second power supply are both disconnected.

[0055] See also Figure 7In the two-position dual power switch, the operating mechanism includes two spring mechanisms 12 symmetrical 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 on the side plate 11, an upper connecting rod 122 pivoted on the side plate 11, a lower connecting rod 123 with one end hinged to the upper connecting rod 122 and the other end connected to a driving arm 221 of the main shaft 2, and a mechanism spring 124 with one end hung on the rotating lever 121 and the other end hung on the hinge point of the upper and lower connecting rods. The main shaft 2 has two symmetrically arranged driving arms 221 and 222 (which can be respectively referred to as "left driving arm 221 and right driving arm 222"), which are "V" shaped. The rotating lever 121 can be electrically driven by the corresponding electromagnetic driving mechanism, or it can be manually driven by manually turning the rotating lever. The rotating levers 121 of the two spring mechanisms 12 are connected to each other through a connecting rod 10.

[0056] The conversion process is as follows: Figure 7 As shown, it is the second power-on state, that is, the main shaft 2 is in the second contact closing position. In this process, the power is switched, driving the left rotating lever 121 to rotate counterclockwise, pulling the left mechanism spring 124 to store energy, and when the left mechanism spring 124 passes the dead point (the mechanism spring 124 presses over the upper connecting rod 122), the mechanism spring 124 releases energy, pulling the left lower connecting rod 123 downward, and while driving the left rotating lever 121 to move, the right rotating lever 121 is driven to rotate counterclockwise through the connecting rod 10, thereby driving the right mechanism spring 124 to store energy, and the right mechanism spring 124 releases energy after passing the dead point, pulling the right lower connecting rod 123 upward, and under the joint action of the left and right lower connecting rods 123, the main shaft 2 is pulled to rotate counterclockwise, passing the middle position (the left driving arm 221 and the right driving arm 222 are at the same horizontal height, refer to Figure 8 After reaching the first power-on position, the spindle 2 is located at the first contact-closed position.

[0057] See also Figure 8 In the three-position dual power switch, the operating mechanism includes two spring mechanisms 12 symmetrical with respect to the main shaft 2, and the main shaft 2 is respectively connected to the two spring mechanisms 12. On this basis, that is, on the basis of the structure of the operating mechanism 1 of the two-position dual power switch, a pair of locking devices 13 are further provided, which are respectively arranged corresponding to one spring mechanism 12, and the locking device 13 includes a locking device 131 that maintains a locking tendency with the upper connecting rod 122 through an elastic member, and a buckle 132 that maintains a buckling tendency with the locking device 131 through an elastic member.

[0058] The conversion process is as follows:

[0059] See Figure 8 and Fig. 9, first describe the double-open position to the first power closing position: Figure 8 The state shown is a double-open position, that is, the first power supply and the second power supply are both in the disconnected state. In this position, the left buckle 132 is manually or electrically pushed by the middle electromagnet to rotate counterclockwise to release the buckle state (unlock) with the left lock buckle 131, and the left lock buckle 131 rotates counterclockwise to release the buckle state (unlock) with the left upper connecting rod 122, so that the left lower connecting rod 123 can be pulled downward by the left mechanism spring 124 in the energy storage state, thereby driving the main shaft 2 to rotate counterclockwise to reach the first power supply closing position, as shown in FIG. Fig. 9 , i.e. the main shaft 2 reaches the first contact closing position. In the above process, the buckle, lock buckle and upper connecting rod on the right side remain in the buckle position and do not move.

[0060] From the first power on position to the double off position: Fig. 9 The first power-on position is set, and the right-side rotating lever 121 is driven to rotate clockwise manually or electrically through the right-side electromagnet, driving the right-side mechanism spring 124 to store energy. Since the right-side upper connecting rod is in a buckled state with the right-side lock buckle 131, the right-side mechanism spring 124 is kept in the energy storage state. During the clockwise rotation of the right-side rotating lever 121, the left-side rotating lever 121 is driven to rotate clockwise through the connecting rod 10, pulling the left-side mechanism spring 124 to store energy. After the left-side mechanism spring 124 passes the dead point, the energy is released, and the left-side lower connecting rod 123 is pulled upward, pulling the main shaft 2 to rotate counterclockwise to reach the middle position (the left-side driving arm 221 and the right-side driving arm 222 are at the same horizontal height, refer to Figure 8 The position of the central spindle 2), that is, the double split position.

[0061] See also Figures 6a to 6d The applicant explains the working process of the auxiliary closing mechanism 3 as follows:

[0062] like Figure 6a , the switch is in the first power-on position, that is, the main shaft 2 is in the first contact closing position, the auxiliary closing mechanism 3 is in the energy release state, that is, the pair of springs 332 are in the free length and are not compressed, and there is a small distance between the arc bottom surface of the sliding groove 33111 on the first guide member I 3311 of the guide rod 331 and the transmission shaft groove 31011 of the transmission shaft 3101 on the push rod assembly 31;

[0063] like Figure 6bUnder manual or electric operation, the main shaft 2 of the operating mechanism 1 first rotates counterclockwise by about 5~10°, and the shaft head 21 rotates synchronously by the same angle. On the one hand, the shaft head 21 drives the moving contact of the contact system from the closing position to the just-released position, and on the other hand, it drives the push rod assembly 31 to rotate counterclockwise by the same angle, so that the transmission shaft groove 31011 of the transmission shaft 3101 on the push rod assembly 31 is just in contact with the arc end face (bottom face of the groove) of the sliding groove 33111 of the first guide member Ⅰ3311 on the guide rod 331. At this time, the auxiliary closing mechanism 3 is still in the energy release state, that is, the spring 332 is at a free length and is not compressed. The benefit of the above process is that the auxiliary closing mechanism 3 has no effect on the speed of the moving contact just separating, that is, in this process, the mechanism spring 124 releases energy to drive the main shaft 2 so that the moving and static contacts that control the first power supply move from the closed position to the just separated position. The transmission shaft groove 31011 of the transmission shaft 3101 passes through the empty stroke inside the sliding groove 33111, and does not compress the spring 332. Therefore, the spring 332 does not affect the above movement of the moving and static contacts, that is, the auxiliary closing mechanism 3 has no effect on the separation speed of the moving and static contacts from closing to just separating. During the process of arc elongation when the contacts are separated, the arc is prevented from being retained at the contacts due to the slowdown in the separation speed and burning the contacts, thereby ensuring the electrical life of the contacts and even the entire switch.

[0064] like Figure 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 main shaft's rotation from one contact closing position to another contact closing position. For a two-position switch, the main shaft rotates from one contact closing position to another contact closing position. Although it does not stop in the middle, it will still pass through the middle position in the entire rotation stroke. For a three-position switch, the main shaft 2 will stop at the middle position of the rotation stroke as the third position of the switch, that is, the double open position). Figure 8 The left and right driving arms 221 and 222 of the central main shaft 2 (i.e., the left driving arm and the right driving arm mentioned above) are located at the same horizontal height position. The main shaft 2 drives the shaft head 21 to continue to rotate. On the one hand, the shaft head 21 drives the moving contact of the contact system from the closing position to the middle disconnecting position, and on the other hand, it drives the push rod assembly 31 to compress the spring 332. The push rod assembly 31, the guide rod 331 and the bracket 32 ​​are approximately at the dead point position, and the auxiliary closing mechanism 3 is in the energy storage position. The energy stored in the auxiliary closing mechanism 3 comes entirely from the opening energy of the mechanism spring 124 of the operating mechanism 1.

[0065] like Figure 6d, under the action of the mechanism spring 124 of the operating mechanism 1, the main shaft 2 continues to rotate counterclockwise, and the main shaft 2 drives the shaft head 21 to continue to rotate. On the one hand, the shaft head 21 drives the moving contact of the contact system to move from the middle disconnected position to the closed position, and on the other hand, drives the push rod assembly 31 to rotate counterclockwise, so that the push rod assembly 31 and the guide rod 331 are separated from the dead point position, and the spring 332 begins to release energy. The spring 332 pushes the first guide piece Ⅰ3311 of the guide rod 331, and the first guide piece Ⅰ3311 pushes the push rod assembly 31 to rotate counterclockwise, thereby pushing 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 simultaneously push the main shaft 2 to rotate, 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.

[0066] In summary, the present invention adds an auxiliary closing mechanism, which stores a portion of the opening energy of the operating mechanism and converts it into closing energy of the operating mechanism, thereby helping the contact system to quickly reach the closing position, increasing the closing speed, reducing the requirements on the force value of the energy storage spring of the operating mechanism, and increasing the overall service life of the operating mechanism.

[0067] In the above embodiment, the end of the transmission end 310 of the push rod assembly is arranged in the middle of the transmission shaft 3101 and a transmission shaft groove 31011 is formed around the transmission shaft 3101. At this time, the depth of the sliding groove 33111 opened at one end of the elastic assembly that matches the push rod assembly 31 is greater than the shaft diameter of the transmission shaft 3101 at the position of the aforementioned transmission shaft groove 31011, and the groove bottom of the sliding groove 33111 is a semicircular shape that matches the transmission shaft groove 31011. Alternatively, the transmission shaft groove 31011 is not arranged on the transmission shaft 3101, then the depth of the sliding groove 33111 is greater than the shaft diameter of the transmission shaft 3101, and the groove bottom of the sliding groove 33111 is a semicircular shape that matches the transmission shaft 3101. It should be satisfied that: when the main shaft 2 is in the above-mentioned two closed positions, the aforementioned transmission shaft 3101 is in the open position of the aforementioned sliding groove 33111; when the main shaft 2 is rotated to make the contacts just separated, the aforementioned transmission shaft 3101 is at the bottom position of the aforementioned sliding groove 33111, that is, in the process of the moving and static contacts from closing to just separated position, the transmission shaft 3101 passes through the semi-long groove, that is, it passes through the idle stroke inside the sliding groove 33111 (transmission shaft 3101), and does not compress the spring 332. Therefore, the spring 332 does not affect the above-mentioned movement of the moving and static contacts, that is, the auxiliary closing mechanism 3 has no effect on the separation speed of the moving and static contacts from closing to just separated. In the process of arc elongation when the contacts are separated, the arc is prevented from being retained at the contacts due to the slowdown in the separation speed and burning the contacts, thereby ensuring the electrical life of the contacts and even the entire switch.

Claims

1. A dual power switch, comprising an operating mechanism (1) and a main shaft (2) connected to the operating mechanism (1), wherein the operation of the operating mechanism (1) drives the main shaft (2) to rotate between two closed positions, namely, a first contact closed position and a second contact closed position, and the middle of the rotation stroke of the main shaft (2) from one closed position to another closed position is an intermediate position; characterized in that It also includes an auxiliary closing mechanism (3) connected to the main shaft (2); when the main shaft (2) rotates from a closed position to the intermediate position, the main shaft (2) drives the auxiliary closing mechanism (3) to store energy; and when the main shaft (2) rotates from the intermediate position to another closed position, the auxiliary closing mechanism (3) releases energy to provide assistance for the rotation of the main shaft (2).

2. A dual power conversion switch according to claim 1, characterized in that At the beginning of the stroke of the main shaft (2) rotating from a closed position to an intermediate position, the auxiliary closing mechanism (3) has an action idle stroke, within which the main shaft (2) rotates without driving the auxiliary closing mechanism (3) to store energy; after the end of the action idle stroke, the main shaft (2) continues to rotate toward the intermediate position, and the auxiliary closing mechanism (3) is driven by the main shaft (2) to store energy.

3. A dual power conversion switch according to claim 2, characterized in that 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 sleeved on the main shaft (2); the bracket (32) is fixed on the operating mechanism (1) at a position corresponding to the position directly 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) is at the beginning of the rotation stroke from one closed position to another closed position, the main shaft (2) drives the The push rod assembly (31) rotates and the push rod assembly (31) and the elastic assembly (33) are disconnected from the linkage relationship, forming an idle stroke of the auxiliary closing mechanism (3); after the idle stroke ends, the main shaft (2) continues to rotate toward the middle position, and 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 and store energy; when the main shaft (2) rotates from the middle position to another closed position, the elastic assembly (33) releases energy to provide assistance for the rotation of the main shaft (2).

4. A dual power conversion switch according to claim 3, characterized in that The push rod assembly (31) has a transmission end (310), which extends radially along the main shaft (2). A transmission shaft (3101) is arranged at the end of the transmission end (310). A sliding groove (33111) is provided at one end of the elastic assembly (33) that cooperates with the push rod assembly (31). The depth of the sliding groove (33111) is greater than the outer diameter of the transmission shaft (3101). When the main shaft (2) is in the two closed positions, the transmission shaft (3101) is located at the notch position of the sliding groove (33111), and when the main shaft (2) rotates toward the middle position of the rotation stroke to a degree that the contacts are just separated, the transmission shaft (3101) is located at the bottom position of the sliding groove (33111). The process of the transmission shaft (3101) moving from the notch position of the sliding groove (33111) to the bottom position of the groove is the idle stroke of the auxiliary closing mechanism (3).

5. A dual power conversion switch according to claim 4, characterized in that The push rod assembly (31) comprises a push rod connecting shaft (312) and a pair of push rods (311). The push rods (311) have the same shape, structure and size and are arranged parallel to each other. A push rod transmission cavity (3111) for sleeve-matching with the main shaft (2) is formed in the middle of each of the push rods (311). An upper circular hole (3112) is provided at the upper ends of the pair of push rods (311) and at corresponding positions. A lower circular hole (3113) corresponding to each other is provided at each of the transmission ends (310), a push rod connecting shaft (312) is located between a pair of push rods (311), and both ends of the push rod connecting shaft (312) are riveted to the pair of push rods (311) at positions corresponding to the upper circular holes (3112) at the upper ends of the pair of push rods (311), and both ends of the transmission shaft (3101) are riveted to the pair of push rods (311) at positions corresponding to the lower circular holes (3113).

6. A dual power conversion switch according to claim 5, characterized in that The main shaft (2) has a main shaft head (21) that matches the push rod transmission chamber (3111), and the shape and size of the push rod transmission chamber (3111) are adapted to the shape and size of the main shaft head (21); a transmission shaft groove (31011) is formed in the middle of the transmission shaft (3101) and around the transmission shaft (3101).

7. A dual power conversion switch according to claim 6, characterized in that The bracket (32) comprises a pair of bracket plates (321), the pair of bracket plates (321) are arranged face to face with each other, and a side plate positioning column hole (3211), a bracket plate end connecting shaft hole (3212) and a bracket plate middle connecting shaft hole (3213) are respectively formed on the pair of bracket plates (321) and at corresponding positions, the number of the side plate positioning column holes (3211) is one pair on each of the pair of bracket plates (321) and are respectively located at the upper parts of both ends of the pair of bracket plates (321), the number of the bracket plate end connecting shaft holes (3212) on each of the pair of bracket plates (321) is also one pair and are located below the side plate positioning column holes (3211), and the bracket plate middle connecting shaft holes (3213) on the pair of bracket plates (321) are one pair each and are located below the side plate positioning column holes (3211), and the bracket plate middle connecting shaft holes (3213) on the pair of bracket plates (321) are one pair each. There is one each and they are located below the middle of the pair of bracket plates (321) in the longitudinal direction. The position between the bracket plate end connecting shaft holes (3212) on the pair of bracket plates (321) is riveted by the bracket plate end connecting shaft (322). The position between the bracket plate middle connecting shaft holes (3213) on the pair of bracket plates (321) is riveted by the bracket plate middle connecting shaft (323). A bracket plate middle connecting shaft groove (3231) is formed on the bracket plate middle connecting shaft (323) and around the bracket plate middle connecting shaft (323) in the circumferential direction. The pair of bracket plates (321) of the bracket (32) are sleeved on the operating mechanism (1) through the side plate positioning column holes (3211).

8. A dual power conversion switch according to claim 7, characterized in that The elastic component (33) includes a guide rod (331) and a pair of springs (332). The guide rod (331) includes 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 of guide members. The sliding groove (33111) is provided at the top of the first guide member I (3311). A guide member long strip groove (33112) is provided in a longitudinal state on the first guide member I (3311) and located in the middle of the first guide member I (3311). A guide member is provided on both sides of the upper part of the first guide member I (3311). The second guide member II (3312) has a pair of positioning bosses (33113) on the guide member, and the pair of second guide members II (3312) are respectively located on both sides of the first guide member I (3311), and a guide member connecting shaft head is provided on the upper part of the second guide member II (3312) to probe into the upper riveting hole (33121), and a pair of guide member connecting shaft heads are provided on both sides of the lower part of the second guide member II (3312) to probe into the lower riveting hole (33122), and a guide member semicircular groove (33123) with a notch downward is formed in the center position of the lower part of the second guide member II (3312), and the number of the third guide member III (3313) is one or two pairs, A guide lower positioning boss (33131) extends upwardly from the third guide member III (3313), and a pair of guide connecting shaft head riveting holes (33132) are opened on the third guide member III (3313), one end of the guide connecting shaft (3314) is inserted into the guide connecting shaft head on the left side of the pair of second guide members II (3312) and penetrates into the lower riveting hole (33122) and is riveted with the left side second guide member II (3312), and the other end of the guide connecting shaft (3314) is inserted into the pair of second guide members II after passing through the guide connecting shaft head riveting hole (33132). The guide member connecting shaft head on a second guide member II (3312) on the right side of (3312) is inserted into the lower rivet hole (33122) and is riveted to the second guide member II (3312) on the right side. A pair of connecting shafts (3315) are slidably arranged at positions corresponding to the long strip grooves (33112) of the guide member. The shaft heads at both ends of the pair of connecting shafts (3315) are respectively inserted into the guide member connecting shaft heads and inserted into the upper rivet holes (33121) and are riveted to the second guide member II (3312). A pair of springs (332) are respectively arranged between the upper positioning boss (33113) of the guide member and the lower positioning boss (33131) of the guide member.

9. A dual power conversion switch according to claim 6, characterized in that The sliding groove (33111) is semicircular in shape with a bottom portion adapted to the transmission shaft groove (31011) on the transmission shaft (3101), and the depth of the sliding groove (33111) is greater than the diameter of the transmission shaft groove (31011).

10. A dual power conversion switch according to claim 7, characterized in that The operating mechanism (1) comprises a side plate (11), two spring mechanisms (12) arranged on the side plate (11) and forming a symmetrical relationship with respect to the main shaft (2), the main shaft (2) passing through the side plate (11) and respectively connected to the two spring mechanisms (12); a pair of bracket plates (321) of the bracket (32) are sleeved on the side plate (11) through the side plate positioning column holes (3211), a positioning column (111) is arranged on the side plate (11) and corresponding to the side plate positioning column holes (3211), and a pair of bracket plates (321) of the bracket (32) are sleeved on the positioning column (111) through the side plate positioning column holes (3211).

Images