Rotating shaft positioning device

Abstract

The utility model relates to the technical field of rotating shaft positioning, and discloses a rotating shaft positioning device which comprises a positioning plate, the positioning plate is fixedly installed on a bottom plate, a first installation plate and a second installation plate are fixedly arranged on the bottom plate, and the first installation plate and the second installation plate are located on the two sides of the positioning plate. A rotating shaft is rotationally arranged between the first mounting plate and the second mounting plate and penetrates through a positioning plate used for supporting the rotating shaft, a pressing plate is fixed to the positioning plate, and a positioning rotor used for limiting the rotating shaft is rotationally arranged between the positioning plate and the pressing plate. According to the positioning device, a plurality of positioning devices are arranged in the axial direction of the rotating shaft, the rotating shaft is supported and stabilized, the stability of the rotating shaft structure is improved, the deformation of the rotating shaft during rotation is reduced, the working reliability of the rotating shaft is good, and the synchronism of the rotating shaft in linkage with a plurality of contacts for switching-on and switching-off operation is improved; the rotating shaft is supported and stabilized, bounce of the contact during switching-on and switching-off is reduced, the dynamic stability of the contact of the dual-power automatic transfer switching equipment is improved, and the reliability and the service life of the equipment are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft positioning, in particular to a shaft positioning device. Background Art

[0002] The double power supply automatic transfer switch electrical appliance is widely used in the power system and is used for automatically switching between two power supplies. In the double power supply transmission structure, a transmission shaft is often used. For large current products, the left and right spans of the shaft are large and the length is long, and the shaft is prone to deformation during operation.

[0003] In the prior art, such as the one disclosed in the application number: CN202022146510.3 with the name: A non-power-off double power supply switch, which includes a housing. The housing is provided with a first input terminal, a second input terminal and a first output terminal. The first input terminal and the second input terminal are located on the same side, and the first output terminal is located on the other side. A shaft is arranged in the housing. A plurality of moving contacts are arranged on the shaft. One end of the moving contact is connected to the first output terminal through a flexible connection, and the other end is provided with a contact head. The first input terminal and the second input terminal are located on the rotation trajectory of the contact head.

[0004] However, for the double power supply switch mentioned in the prior art, the span of its shaft is large. During actual operation, when closing the switch, the spring of the contact part is compressed, and the shaft is axially bent due to the reaction force, resulting in out-of-sync of each pole contact, uneven pressure, and the contact at the middle position is vacant and out of phase. Therefore, a shaft positioning device needs to be designed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a shaft positioning device to solve the problems in the prior art.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A shaft positioning device, the shaft positioning device includes a positioning plate, the positioning plate is fixedly installed on the bottom plate, and a first mounting plate and a second mounting plate are fixedly arranged on the bottom plate. The first mounting plate and the second mounting plate are located on both sides of the positioning plate.

[0008] A shaft rotates between the first mounting plate and the second mounting plate. The shaft penetrates through the positioning plate for supporting the shaft. A pressing plate is fixed on the positioning plate, and a positioning rotor for limiting the shaft is rotatably installed between the positioning plate and the pressing plate.

[0009] Further, mounting holes are arranged in an array on the pressing plate, and a side groove is arranged on the side surface of the pressing plate. The side groove is communicated with the corresponding mounting hole.

[0010] Further, arc grooves are symmetrically arranged on the positioning plate, and arc grooves are also arranged on the pressing plate. The arc grooves on the pressing plate and the positioning plate form a circular groove for installing the positioning rotor.

[0011] Further, two thin-wall bearings are provided on the positioning rotor. The thin-wall bearings are rotationally connected to the circular groove, and limiting arc strips for limiting the thin-wall bearings are fixedly provided on both sides of the arc-shaped groove.

[0012] Further, a locking screw for fixing the pressure plate is fixed on the positioning plate. The locking screw passes through the pressure plate and is fixedly connected to the positioning plate.

[0013] Further, the positioning rotor includes two rotating blocks. A limiting strip for limiting the thin-wall bearing is fixedly connected to the outside of the rotating block. The limiting strip is located between the two thin-wall bearings. A V-shaped groove is provided inside the rotating block, and an opening groove is provided in the V-shaped groove.

[0014] Advantages of the present utility model:

[0015] 1. For the shaft positioning device of the present utility model, by arranging a plurality of positioning devices axially on the shaft, the shaft is stably supported, the stability of the shaft structure is improved, the deformation during the rotation of the shaft is reduced, the working reliability of the shaft is good, and the synchronization of the shaft driving multiple contactors to perform closing and opening operations is improved;

[0016] 2. For the shaft positioning device of the present utility model, to stably support the shaft, reduce the bounce during the closing and opening of the contacts, improve the dynamic stability of the contacts of the automatic transfer switch for dual power supplies, and ensure the reliability and service life of the electrical appliance. Brief Description of the Drawings

[0017] The present utility model will be further described below with reference to the drawings.

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the structure of the positioning device of the present utility model;

[0020] Figure 3 is a partial structure schematic diagram of the positioning device of the present utility model;

[0021] Figure 4 is a sectional structure schematic diagram of the positioning device of the present utility model;

[0022] Figure 5 is a schematic diagram of the structure of the positioning rotor and the thin-wall bearing of the present utility model;

[0023] Figure 6 is a schematic diagram of the structure of the rotating block of the present utility model. Detailed Embodiment

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0025] A shaft positioning device, as Figure 1 shown, the shaft positioning device includes a positioning plate 1, at least one positioning plate 1 is fixedly installed on the bottom plate 14, the bottom plate 14 is fixedly arranged on the automatic dual-power transfer switch electrical appliance, and an installation plate one 12 and an installation plate two 13 are fixedly provided on the bottom plate 14. The installation plate one 12 and the installation plate two 13 are located on both sides of the positioning plate 1.

[0026] As Figure 2 shown, a rotating shaft 11 is rotatably connected between the installation plate one 12 and the installation plate two 13. The rotating shaft 11 passes through and is installed on the positioning plate 1. A pressing plate 2 is fixedly installed on the positioning plate 1. The pressing plate 2 is provided with a plurality of installation holes 22 distributed in an array. A side groove 21 corresponding to the installation hole 22 is provided on the side surface of the pressing plate 2, and the side groove 21 communicates with the corresponding installation hole 22.

[0027] As Figure 3 、 Figure 4 shown, the positioning plate 1 is provided with symmetrically distributed arc-shaped grooves 3, and the pressing plate 2 is also provided with symmetrically distributed arc-shaped grooves 3. A locking screw 5 is fixedly connected to the positioning plate 1. The locking screw 5 passes through the pressing plate 2 and is fixedly connected to the positioning plate 1, so that the arc-shaped grooves 3 on the pressing plate 2 and the positioning plate 1 cooperate to form a circular groove.

[0028] Limit arc strips 4 are fixedly provided on both sides of the arc-shaped groove 3. A positioning rotor 7 is rotatably installed in the circular groove. Two thin-wall bearings 6 are sleeved on the positioning rotor 7. The thin-wall bearings 6 are rotatably connected to the circular groove. The position of the thin-wall bearings 6 is limited by the limit arc strips 4 to fix the position of the positioning rotor 7.

[0029] As Figure 5 、 Figure 6 shown, the positioning rotor 7 includes two rotating blocks. A limit strip 71 is fixedly connected to the outside of the rotating block. The limit strip 71 is located between the two thin-wall bearings 6 and is used to separate the thin-wall bearings 6 and limit the position of the thin-wall bearings 6. A V-shaped groove 72 is provided on the inner side of the rotating block, and an opening groove 73 is provided in the V-shaped groove 72.

[0030] The two rotating blocks are fixedly attached to the outside of the rotating shaft 11. The positioning rotor 7 is fixed by the thin-wall bearings 6, and then the positioning rotor 7 is used to limit and install in the circular groove to support the rotation shaft 11 to work.

[0031] The working principle is as follows:

[0032] In a double-power automatic transfer switch electrical power system, it is used for automatic switching between two power sources, supporting a rotating shaft 11 with a relatively large left-right span and a long length, and positioning the position of the rotating shaft.

[0033] The position of the positioning device is locked by a positioning plate 1 and a pressing plate 2, and then the rotating shaft 11 is supported by a positioning rotor 7 and a thin-wall bearing 6. And the positioning rotor 7 rotates synchronously with the rotating shaft 11 to prevent the rotating shaft 11 from bending and deforming, so that the rotating shaft 11 rotates stably, ensuring that the pole contacts on it are synchronous, ensuring uniform pressure, and enabling the contacts of each pole of the rotating shaft 11 to work stably.

[0034] Moreover, the position of the positioning rotor 7 is limited by a limiting arc bar 4 and a limiting bar 71 to ensure its positioning effect on the rotating shaft 11, improve the reliability of the operation of the rotating shaft 11, and ensure the stability of the contact position.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A shaft positioning device, the shaft positioning device comprising a positioning plate (1), characterized in that, The positioning plate (1) is fixedly installed on the bottom plate (14). On the bottom plate (14), a first mounting plate (12) and a second mounting plate (13) are fixedly provided. The first mounting plate (12) and the second mounting plate (13) are located on both sides of the positioning plate (1). A rotating shaft (11) rotates between the first mounting plate (12) and the second mounting plate (13). The rotating shaft (11) passes through the positioning plate (1) for supporting the rotating shaft (11). A pressing plate (2) is fixed on the positioning plate (1). A positioning rotor (7) for limiting the rotating shaft (11) is rotatably installed between the positioning plate (1) and the pressing plate (2).

2. The shaft positioning device according to claim 1, wherein, Mounting holes (22) are arrayed on the pressing plate (2). A side groove (21) is provided on the side surface of the pressing plate (2). The side groove (21) communicates with the corresponding mounting hole (22).

3. The shaft positioning device according to claim 1, wherein, Arc-shaped grooves (3) are symmetrically provided on the positioning plate (1). Arc-shaped grooves (3) are also provided on the pressing plate (2). The arc-shaped grooves (3) on the pressing plate (2) and the positioning plate (1) form a circular groove for installing the positioning rotor (7).

4. A shaft positioning device according to claim 3, characterized in that, Two thin-wall bearings (6) are provided on the positioning rotor (7). The thin-wall bearings (6) are rotatably connected to the circular groove. Limiting arc strips (4) for limiting the thin-wall bearings (6) are fixedly provided on both sides of the arc-shaped groove (3).

5. A shaft positioning device according to claim 1, characterized in that, A locking screw (5) for fixing the pressing plate (2) is fixed on the positioning plate (1). The locking screw (5) passes through the pressing plate (2) and is fixedly connected to the positioning plate (1).

6. The shaft positioning device according to claim 4, wherein, The positioning rotor (7) includes two rotating blocks. Limiting strips (71) for limiting the thin-wall bearings (6) are fixedly connected to the outside of the rotating blocks. The limiting strips (71) are located between the two thin-wall bearings (6). A V-shaped groove (72) is provided on the inner side of the rotating block. An opening groove (73) is provided in the V-shaped groove (72).

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