CN201007947Y - A switch conversion device and an automatic transfer switch with the device - Google Patents

Abstract

The utility model discloses a switch transferring device and an automatic transferring switch with the switch transferring device, the switch transferring device comprises a main shaft, a main shaft swing stem, a crankshaft, a guided stem, a guided stem spring, an electromagnet and a link block, wherein the main shaft swing stem is equipped with a chute, the link block equipped with a slot is connected with the end portion of an electromagnet moving core. The main shaft is rotationally connected with a switch frame, and one end of the main shaft is connected with a switch moving contact. The crankshaft comprises a crankshaft swing stem, an apical shaft, a bed shaft and two end shafts, wherein the apical shaft and the bed shaft are connected between the crankshaft swing stem, the two end shafts are connected on the outboard of the crankshaft swing stem, and the end shaft which rotates along an axial direction of the main shaft is connected with the switch frame. The upper end of the guided stem are rotationally connected with the bed shaft, the lower end of the guided stem is supported on a switch frame locking device, the electromagnet moving core is transversely arranged, and the moving direction of the electromagnet moving core is arranged along the axial direction of the end shaft of the crankshaft. The switch transferring is achieved through the apical shaft engaged with the chute and the link block engaged with the end shaft, and the switch is made of the transferring device. The switch structure of the utility model is simplified, the manufacturing cost of the switch is reduced, thereby the reliable self-locking of the cutting and closing positions of the switch contact is achieved.

Description

A switch conversion device and an automatic transfer switch with the device

technical field

The utility model relates to an internal structure of an electrical switch and a switch using the structure, in particular to a switch switching device and an automatic switching switch with the device.

Background technique

At present, most of the general-purpose automatic transfer switches use V-shaped mechanisms to achieve the mechanical self-locking of the reversing parts. In terms of structure, special locking electromagnets and complex locking mechanisms are required, and special reversing electromagnets and corresponding The reversing mechanism is used to complete the reversing action of the reversing components.

The existing automatic transfer switch has the following defects:

1. At least two electromagnets are required to complete the action, making the structure complex, difficult to assemble, and lower in reliability;

2. The action between the electromagnets requires corresponding electronic components to control their sequence, and the action speed is slow;

3. There are many switch parts and occupy a large space, making the switch larger;

4. The manufacturing cost of the switch is high.

Utility model content

One of the technical problems to be solved by the utility model is to provide a switch conversion device, which simplifies the existing switch structure and overcomes the above-mentioned defects in the prior art.

The second technical problem to be solved by the utility model is to provide an automatic transfer switch, which uses the above-mentioned switch transfer device to overcome the above-mentioned defects in the existing switches.

The technical scheme adopted by the utility model to solve one of its technical problems is to construct a switch conversion device, which is characterized in that it includes a main shaft 1, a main shaft swing rod 2 connected to the main shaft in a manner to limit mutual rotation, a crankshaft 100, a guide Rod 6, the compression spring 8 sleeved on the guide rod, the electromagnet 4 connected to the switch bracket 11 and the connection block 10 connected to the end of the moving iron core 3 of the electromagnet; the main shaft is rotatably connected to the switch On the bracket, one end thereof is connected with the switch movable contact in a manner to restrict mutual rotation; the crankshaft includes at least two crankshaft swing rods 5, a top shaft 51 and a bottom respectively connected between the upper ends and lower ends of the crankshaft swing rods. Shaft, and two end shafts 9 connected on the outer side of the crankshaft swing rod between the axis of the top shaft and the axis of the bottom shaft and coaxial, and the two end shafts are connected to the switch bracket in the direction of the axis of the main shaft The main shaft swing rod includes a chute arranged along its connection end with the main shaft toward its free end, the top shaft is inserted into the chute and cooperates with it to realize the left and right swing of the main shaft swing rod around the main shaft; The connection block includes a long hole arranged along its vertical direction in its working state, the bottom shaft passes through the long hole and cooperates with it; the upper end of the guide rod is rotatably connected to the bottom shaft, and the lower end is supported on the switch On the limit device of the bracket, the cooperation between the bottom shaft and the long hole of the connecting block makes the connecting block drive the crankshaft to swing left and right; the moving direction of the electromagnet moving iron core is along the end shaft of the crankshaft The axial direction is arranged laterally; driven by the electromagnet, the main shaft pendulum swings left and right through the main shaft to drive the switch movable contact to realize switch conversion; when the switch movable contact is in the first working position, the The first working side of the main shaft swing rod chute forms a first angle with the line connecting the top shaft axis and the end shaft axis of the crankshaft. When the switch movable contact and the static contact are in the second working position, the The second working side of the main shaft rocker chute forms a second included angle with the line connecting the crankshaft top shaft axis and the end shaft axis, and the first included angle is opposite to the second included angle left and right.

In the switch conversion device of the present invention, the first included angle is less than 90 degrees.

In the switching conversion device of the present invention, the second included angle is less than 90 degrees.

In the switch conversion device of the present invention, the limit device of the switch bracket is a hole arranged on the support surface of the switch bracket to the guide rod and matched with the lower end of the guide rod, and the lower end of the guide rod passes through the hole. The hole is used to position the lower end of the guide rod so that the guide rod can swing around the positioning position.

In the switch conversion device of the present utility model, the limit device of the switch bracket is a limit plate 7 attached to the support surface of the switch bracket to the guide rod, and the limit plate includes the lower end of the guide rod. For matching holes, the switch bracket is provided with a hole whose size is equal to or larger than the size of the hole at the position corresponding to the hole, and the hole of the limiting plate positions the lower end of the guide rod so that the guide rod swings around the positioning position.

In the switch conversion device of the present invention, the connection block is screwed to the electromagnet moving iron core.

In the switching conversion device of the present invention, the electromagnet is a bidirectionally moving electromagnet or two unidirectionally or bidirectionally moving electromagnets respectively connected to both ends of the connecting block.

In the switch conversion device of the present utility model, the part of the end shaft protruding outside the switch bracket includes a hole arranged transversely along the end shaft or a plane arranged longitudinally along the end shaft; A shaft sleeve on the top shaft, the shaft sleeve cooperates with the chute of the main shaft swing rod.

In the switch conversion device of the present invention, the shaft center of the main shaft, the shaft center of the crankshaft end and the center of the limit device are located in the same vertical plane of the support surface of the guide rod of the switch bracket.

The technical solution adopted by the utility model to solve the second technical problem is to construct an automatic transfer switch, including a switch bracket 11, a moving contact, a static contact and a switch conversion device, which is characterized in that: the switch conversion device includes a main shaft 1. The main shaft pendulum bar 2 connected with the main shaft in a manner of limiting mutual rotation, the crankshaft 100, the guide rod 6, the compression spring 8 sleeved on the guide rod, the electromagnet 4 connected to the switch bracket 11 and the The connecting block 10 at the end of the moving iron core 3 of the electromagnet; the main shaft is rotatably connected to the switch bracket, and one end thereof is connected to the moving contact in a manner to limit mutual rotation; the crankshaft includes at least two crankshaft pendulums Rod 5, the top shaft 51 and the bottom shaft respectively connected between the upper end and the lower end of the crankshaft swing rod, and the coaxial shaft between the top shaft axis and the bottom shaft axis connected on the outside of the crankshaft swing rod Two end shafts 9, the two end shafts are rotatably connected to the switch bracket along the direction of the axis of the main shaft; The top shaft is inserted into the chute and cooperates with it to realize the left and right swing of the main shaft swing bar around the main shaft; the connecting block includes a long hole arranged along its vertical direction in its working state, and the bottom shaft passes through the long hole The upper end of the guide rod is rotatably connected to the bottom shaft, and the lower end is supported on the limit device of the switch bracket. The cooperation between the bottom shaft and the long hole of the connecting block makes the connecting block The crankshaft is driven to swing left and right; the moving direction of the electromagnet moving iron core is arranged transversely along the axial direction of the end shaft of the crankshaft; driven by the electromagnet, the main shaft swing rod is driven by the main shaft The moving contact and the static contact are closed or partially opened to realize switch conversion; when the switch moving contact is in the first working position, the first working side of the main shaft swing rod chute is in contact with the top of the crankshaft. The line connecting the shaft axis and the end shaft axis forms a first included angle. When the switch movable contact and the static contact are in the second working position, the second working side of the main shaft swing rod chute and the crankshaft A line connecting the center of the top shaft and the center of the end shaft forms a second included angle, and the first included angle is opposite to the second included angle.

Implement the switch changeover device of the present utility model and the automatic changeover switch with the device, compared with the prior art, its beneficial effect is:

1. The switch structure is greatly simplified, and the switching action of the switch can be realized by using an electromagnet.

At the same time, the manufacturing process of the switch is simplified, and the manufacturing cost of the switch is reduced;

2. Simplify the action and control of the switch;

3. It can realize the reliable self-locking of the open and closed positions of the switch contacts.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is a structural schematic diagram of an embodiment of the switch conversion device of the present invention in an initial state.

Fig. 2 is a schematic diagram of the state structure of the switch conversion device of the present invention after one conversion.

Fig. 3 is a schematic perspective view of the structure of the switch conversion device of the present invention.

Detailed ways

Fig. 1, Fig. 2, Fig. 3 have shown a kind of embodiment of the present utility model. As shown in Figure 1, the switch conversion device of the present invention includes a main shaft 1, a main shaft swing rod 2 connected (fixed connection, connection that limits mutual rotation (such as a square shaft and a square sleeve, etc.) etc.) on the main shaft 1, Crankshaft 100, guide rod 6, the compression spring 8 sleeved on the guide rod 6, the electromagnet 4 connected on the switch bracket 11 and the connection block 10 connected to the end of the moving iron core 3 of the electromagnet 4.

The main shaft 1 is rotatably supported (can be supported at both ends or cantilevered) on the switch frame 11, and one end of the main shaft 1 is fixedly connected with the moving contact of the switch or connected in a manner to limit mutual rotation. The number of moving contacts can be 1, 2 or more to realize the switch conversion of single power supply, double power supply or multiple power supply.

Crankshaft 100 comprises two crankshaft swing rods 5, the top shaft 51 (see Fig. 3) and the bottom shaft (not visible in the figure) that are respectively connected between the crankshaft swing rods 5 upper ends and the lower ends, and the crankshaft swing rods that are connected to each other. 5. Two end shafts 9 located outside the axis of the top shaft and the axis of the bottom shaft and coaxial with each other. The two end shafts 9 are rotatably connected to the switch bracket 11 along the axis direction of the main shaft 1. According to needs, the crankshaft swing rod 5 can be provided with multiple pieces, such as 3 pieces, 4 pieces, etc., and the upper and lower ends between every two crankshaft swing levers 5 are respectively provided with a top shaft 51 and a bottom shaft, which can be connected with a plurality of electromagnets 4 and Block 10 cooperates (see below) to increase the operating force of the switching device.

A chute 21 is set on the main shaft swing rod 2 along the connection end of the main shaft swing rod 2 and the main shaft 1 toward the free end of the main shaft swing rod 2 , and the top shaft 51 is inserted into the chute 21 and cooperates with both sides of the chute 21 . Connecting block 10 is provided with elongated hole (or U-shaped groove etc.), and the direction of elongated hole (or U-shaped groove) is positioned at vertical direction and towards the bottom axis of crankshaft 100 when connecting block 10 is in working state, and bottom axis passes through this long hole and match with both sides of the long hole. The length of the chute 21 of the main shaft pendulum 2 should satisfy the requirement that the top shaft 51 of the crankshaft 100 drives the main shaft pendulum 2 to swing left and right around the main shaft 1 when the switch conversion device is working. The length of slotted hole will satisfy guide rod 6 to swing left and right (seeing below) driven by the bottom shaft of crankshaft 100 when switch conversion device works, and bottom shaft is not bound by the length of slotted hole.

The upper end of the guide rod 6 is rotatably connected to the bottom shaft, and its lower end is supported in the hole of the limit plate 7 that is fitted and fixed on the support surface of the switch bracket 11 to the guide rod 6. The hole positions the lower end of the guide rod 6, Simultaneously, switch bracket 11 is provided with a size equal to or greater than the hole (not visible in the figure) of the hole size of limit plate 7 at the corresponding position of the hole of limit plate 7, and guide rod 6 lower ends stretch out from these two holes, The guide rod 6 swings left and right around the positioning position. In other embodiments, a hole matching the lower end of the guide rod 6 can be directly provided on the supporting surface of the switch bracket 11 to the guide rod 1, and the lower end of the guide rod 6 protrudes from the hole, and the hole positions the lower end of the guide rod 6 , so that the guide rod 6 swings left and right around the positioning position.

The electromagnet 4 is arranged transversely along the axial direction of the end shaft 9 of the crankshaft 100 according to the moving direction of the moving iron core 3 , so as to drive the crankshaft 100 to rotate around the end shaft 9 .

As shown in Figure 1, when the switch movable contact and the static contact are in a certain state (such as a closed state), the left side of the main shaft swing rod chute 21 and the axis and end shaft of the top shaft 51 of the crankshaft 100 The line connecting the axes of 9 forms a rightward angle a, and the crankshaft 100 maintains the switch state under the action of the spring 8. In order to realize the reliable self-locking of the switch in the closed state, it is necessary to meet the reaction force of the main shaft swing rod 2 on the top shaft 51 of the crankshaft 100 so that the crankshaft 100 cannot rotate. At this time, the included angle a is less than 90 degrees.

As shown in Figure 2, when the electromagnet 4 pushes the connecting block 10 to move to the right, and the switch transition makes the switch movable contact and the static contact in another state (such as the disconnected state), the right side of the main shaft swing rod chute 21 The connecting line between the working side and the axial center of the top shaft 51 of the crankshaft 100 and the axial center of the end shaft 9 forms a leftward angle b, and the crankshaft 100 maintains the switch state under the action of the spring 8 . In order to realize the reliable self-locking of the switch in the OFF state, it is necessary to meet the reaction force of the main shaft swing rod 2 on the top shaft 51 of the crankshaft 100 so that the crankshaft 100 cannot rotate. At this time, the included angle b is less than 90 degrees.

In order to facilitate the adjustment of the working position of the connecting block 10, the connecting block 10 and the electromagnet moving iron core 3 are screwed together. In this embodiment, the moving iron cores 3 of the two electromagnets 4 are in the same rotation direction as the connecting threads at both ends of the connecting block 10 .

In this embodiment, the oppositely arranged double electromagnets 4 are used to drive the connection block 10, and the electromagnets 4 are one-way or two-way movement electromagnets. In other embodiments, an electromagnet capable of bidirectional movement may be used to drive the connection block 10 .

In order to facilitate the use of tools to overhaul the switch, a hole is arranged transversely along the end shaft or a plane is arranged longitudinally along the end shaft on the part of the end shaft 9 protruding from the outside of the switch bracket 11, so that the crankshaft can be rotated by using a screwdriver or a wrench using the provided hole or plane. 100, to realize the manual transfer switch.

In order to reduce the frictional force between the top shaft 51 and the main shaft swing rod chute 21, a sleeve is fitted on the top shaft 51, and the sleeve, the main shaft swing rod and the chute are all in rolling fit, thereby reducing the friction between the fixed top shaft 51 and the main shaft swing rod chute 21. The sliding groove 21 has a frictional force of sliding fit.

In order to ensure the reliable operation of the switch conversion device, the axis center of the main shaft 1, the axis center of the crankshaft end shaft 9 and the lower end support point of the guide rod 6 (that is, the limit device at the lower end of the guide rod 6) are centered on the guide rod of the switch bracket 11. In the same vertical plane as the surface of the supporting guide rod 6, the design is simplified by symmetrical arrangement.

The automatic transfer switch of the utility model adopts the above-mentioned switch conversion device, the movable contact is connected to the output end of the main shaft 1 of the switch conversion device, and the state conversion of the switch is realized through the conversion device.

For a single-power transfer switch, a static contact is provided, and the switch transfer device controls the closing and opening of the moving contact and the static contact to realize the conversion of the switch on and off. For the dual power supply switch, a static contact is provided at the two positions where the movable contact swings, and the switch conversion device controls the swing of the movable contact to close with the two static contacts respectively to realize the conversion of the two power sources.

Claims (10)

1. switch transition device is characterized in that: comprise main shaft (1), with this main shaft with the main shaft fork (2), bent axle (100), the guide rod (6) that limit mutual rotating manner and be connected, be sleeved on compression spring (8) on this guide rod, be connected the electromagnet (4) on the switch bracket (11) and be connected the contiguous block (10) of moving iron core (3) end of this electromagnet; Described main shaft is rotatably connected on this switch bracket, and the one end is connected to limit mutual rotating manner with switch movable contact; Described bent axle comprises at least two bent axle forks (5), be connected between the described bent axle fork upper end and apical axis between the lower end (51) and lower shaft and be connected this bent axle fork outside between this apical axis axis and this lower shaft axis and two coaxial butt axles (9), and this two butts axle is rotatably connected on this switch bracket along described main-shaft axis direction; Described main shaft fork comprises the chute that is provided with to its free end direction along itself and described main shaft link, and described apical axis inserts this chute and is mated realizes this main shaft fork swinging around described main shaft; Described contiguous block is included in the slotted hole that its operating state is provided with along its vertical direction, and described lower shaft passes this slotted hole and is mated; The upper end of described guide rod is rotatably connected on this lower shaft upper and lower end and is supported on the stopping means of this switch bracket, and described lower shaft is realized swinging to described crank-driven with making this contiguous block cooperating of described contiguous block slotted hole; The direction of motion of the moving iron core of described electromagnet is along the end axis direction transverse arrangement of turbo of described bent axle; Under the driving of described electromagnet, described main shaft fork swings and drives switch movable contact realization switch transition by described main shaft; When described switch movable contact is in first service position, first work side of described main shaft fork chute and described bent axle apical axis axle center form first angle with end axle axial connecting line, when described switch movable contact and fixed contact are in second service position, second work side and the described bent axle apical axis axle center and an end axial connecting line of described main shaft fork chute form second angle, and be relative about this first angle and this second angle.

2. switch transition device as claimed in claim 1 is characterized in that, described first angle is less than 90 degree.

3. switch transition device as claimed in claim 1 is characterized in that, described second angle is less than 90 degree.

4. switch transition device as claimed in claim 1, it is characterized in that, the stopping means of described switch bracket is to be arranged on this switch bracket to the supporting surface of described guide rod and the hole that cooperates with this lower end of the guide rod, described lower end of the guide rod passes this hole, and this hole positions described lower end of the guide rod and makes this guide rod around this position location swing.

5. switch transition device as claimed in claim 1, it is characterized in that, the stopping means of described switch bracket is to be fitted in this switch bracket to the limiting plate on the supporting surface of described guide rod, this limiting plate comprises the hole that cooperates with this lower end of the guide rod, this switch bracket is provided with the hole that size is equal to or greater than this hole size in the position of this hole correspondence, and described spacing plate hole positions described lower end of the guide rod and makes this guide rod around this position location swing.

6. switch transition device as claimed in claim 1 is characterized in that, described contiguous block is threaded with the moving iron core of described electromagnet.

7. as the described switch transition device of one of claim 1 to 6, it is characterized in that described electromagnet is that the electromagnet of a bidirectional-movement or two are connected to the one-way movement at described contiguous block two ends or the electromagnet of bidirectional-movement.

8. switch transition device as claimed in claim 7 is characterized in that, described end axle comprises along the hole of this end axle horizontally set or the plane that vertically is provided with along this end axle in the part of stretching out the described switch bracket outside; Described bent axle comprises the axle sleeve that is sleeved on the described apical axis, the described chute cooperating of this axle sleeve and described main shaft fork.

9. switch transition device as claimed in claim 7 is characterized in that, described spindle axis, described crankshaft end axle axle center and described stopping means are centered close in the same vertical plane on described switch bracket guide rod supports surface.

10. automatic change-over, comprise switch bracket (11), moving contact, fixed contact and switch transition device, it is characterized in that: this switch transition device comprise main shaft (1), with this main shaft with the main shaft fork (2), bent axle (100), the guide rod (6) that limit mutual rotating manner and be connected, be sleeved on compression spring (8) on this guide rod, be connected the electromagnet (4) on the described switch bracket (11) and be connected the contiguous block (10) of moving iron core (3) end of this electromagnet; Described main shaft is rotatably connected on this switch bracket, and the one end is connected to limit mutual rotating manner with described moving contact; Described bent axle comprises at least two bent axle forks (5), be connected between the described bent axle fork upper end and apical axis between the lower end (51) and lower shaft and be connected this bent axle fork outside between this apical axis axis and this lower shaft axis and two coaxial butt axles (9), and this two butts axle is rotatably connected on this switch bracket along described main-shaft axis direction; Described main shaft fork comprises the chute that is provided with to its free end direction along itself and described main shaft link, and described apical axis inserts this chute and is mated realizes this main shaft fork swinging around described main shaft; Described contiguous block is included in the slotted hole that its operating state is provided with along its vertical direction, and described lower shaft passes this slotted hole and is mated; The upper end of described guide rod is rotatably connected on this lower shaft upper and lower end and is supported on the stopping means of this switch bracket, and described lower shaft is realized swinging to described crank-driven with making this contiguous block cooperating of described contiguous block slotted hole; The direction of motion of the moving iron core of described electromagnet is along the end axis direction transverse arrangement of turbo of described bent axle; Under the driving of described electromagnet, described main shaft fork swings and drives described moving contact and described fixed contact is closed or section is opened the realization switch transition by described main shaft; When described switch movable contact is in first service position, first work side of described main shaft fork chute and described bent axle apical axis axle center form first angle with end axle axial connecting line, when described switch movable contact and fixed contact are in second service position, second work side and the described bent axle apical axis axle center and an end axial connecting line of described main shaft fork chute form second angle, and be relative about this first angle and this second angle.

Images