Indicating device for electric operating mechanism of tap switch

Abstract

The utility model relates to the field of transformer tap switch accessories, and discloses an indicating device of a tap switch electric operating mechanism, which comprises an indicating dial, a turn number pointer, a gear pointer, a bull gear and a bull gear supporting device, the indicating dial is fixed outside a machine box body of the tap switch electric operating mechanism. The turn number pointer is fixedly connected with one end of a first output shaft of the tap switch electric operating mechanism. The bull gear supporting device is rotatably fixed in the case body, the bull gear supporting device supports the bull gear, the bull gear is meshed with the gear on the second output shaft, and the gear pointer is fixed on one side of the bull gear; the turn number pointer is driven by the first output shaft to rotate, the gear pointer is driven by the large gear to rotate, the structure is simple, indication is reliable, and the problems that in the prior art, a shaft sleeve of one pointer is arranged on the outer side of the other pointer shaft, two shafts driving the pointers to rotate are high in machining precision, and friction force is large when two rotating shafts rotate relatively; and clamping stagnation is easily caused in the rotating process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of transformer tap switch accessories, especially to a indicating device of tap switch electric operating mechanism. BACKGROUND

[0002] The tap switch is usually used on the transformer to adjust the voltage ratio, and the tap switch electric mechanism is the driving and control system of the on-load tap changer of the transformer to realize accurate, reliable and safe adjustment of the transformer.

[0003] At present, the two clock faces of the indicating device of the tap switch electric operating mechanism have concentric structure, and the two clock faces are separated, for the convenience of reading, most of the minute faces have concentric structure, and the commonly used indicating device is shown in the patent with the application number 2005200459201, the two coaxial shafts rotating the pointers, and the shaft sleeve of one pointer is outside the shaft of the other pointer, the structure requires high machining precision of the two shafts rotating the pointers, and the friction is large when the two shafts rotate relatively, and the rotation engineering is prone to jam. SUMMARY

[0004] Therefore, the main purpose of the utility model is to provide an indicating device of tap switch electric operating mechanism, which can solve the problems of high machining precision of the two shafts rotating the pointers, large friction when the two shafts rotate relatively, and easy jam in the rotation engineering in the prior art.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] The indicating device of the tap switch electric operating mechanism comprises an indicating disc, a number of turns pointer, a gear position pointer, a large gear, and a large gear support device.

[0007] The indicating disc is fixed outside the machine box body of the tap switch electric operating mechanism, and the number of turns pointer is fixedly connected with one end of the first output shaft of the tap switch electric operating mechanism.

[0008] The large gear support device is rotatably fixed inside the machine box body, the large gear support device supports the large gear, the large gear is engaged with the gear on the second output shaft of the tap switch electric operating mechanism, and the gear position pointer is fixed on one side of the large gear.

[0009] In a preferred embodiment, the large gear is coaxial with the first output shaft.

[0010] In a preferred embodiment, the indicating disc comprises a small clock face and a large clock face, the small clock face and the large clock face are concentric, a first transparent window is arranged at the center of the small clock face, and a second transparent window is arranged between the small clock face and the large clock face.

[0011] In a preferred embodiment, the small dial surface is recessed with an indication grid, and the large dial surface is recessed with an indication grid.

[0012] In a preferred embodiment, the indication grids of the small dial surface and the large dial surface are painted.

[0013] In a preferred embodiment, the large gear support device comprises a pin, and two flange bearings, one end of the pin is fixedly connected to the box body, the two flange bearings are sleeved outside the pin, the flanges of the two flange bearings are respectively located outside the large gear, and multiple groups of the flange bearings support the large gear.

[0014] In a preferred embodiment, a sleeve is arranged outside the pin, one end of the sleeve contacts the inner ring of the flange bearing, and the other end of the sleeve contacts the box body.

[0015] In a preferred embodiment, the number of turns pointer ring is fixed to one end of the first output shaft by a screw, and the number of turns pointer is recessed on the surface of the number of turns pointer ring.

[0016] In a preferred embodiment, the gear position pointer ring is fixed to one side of the large gear by a screw, and the gear position pointer is recessed on the surface of the gear position pointer ring.

[0017] The number of turns pointer is driven to rotate by the first output shaft, and the gear position pointer is driven to rotate by the large gear, the structure is simple, the indication is reliable, the shaft sleeve of one pointer is outside the shaft of another pointer in the prior art, the two shafts driving the rotation of the pointers have high machining precision, and the friction is large when the two rotating shafts relatively rotate, and the problem that the rotation is easily stuck in the rotating process is solved.

[0018] The number of turns pointer is driven to rotate by the first output shaft, and the gear position pointer is driven to rotate by the large gear, the structure is simple, the indication is reliable, the shaft sleeve of one pointer is outside the shaft of another pointer in the prior art, the two shafts driving the rotation of the pointers have high machining precision, and the friction is large when the two rotating shafts relatively rotate, and the problem that the rotation is easily stuck in the rotating process is solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0020] Figure 1 Structure diagram of an indicating device of an electric operating mechanism of a tap switch according to an embodiment of the present disclosure;

[0021] Figure 2 Structure diagram of an indicating device of an electric operating mechanism of a tap switch according to an embodiment of the present disclosure;

[0022] Figure 3 Structure diagram of an indicating disc according to an embodiment of the present disclosure;

[0023] Figure 4 Structure diagram of a gear box of an electric operating mechanism of a tap switch;

[0024] Figure 5 Structure diagram of a gear box of an electric operating mechanism of a tap switch;

[0025] Figure 6 Structure diagram of an electric operating mechanism of a tap switch;

[0026] Figure 7 Structure diagram of an electric operating mechanism of a tap switch.

[0027]

Main component symbol explanation

[0028] 1, indicating disc; 2, number of turns pointer, 3, gear position pointer; 4, large gear; 5, large gear support device;

[0029] 11, small clock face; 12, large clock face; 13, first transparent window; 14, second transparent window;

[0030] 51, pin; 52, flange bearing; 53, sleeve;

[0031] 6, case body;

[0032] 61, gear box body;

[0033] 71, input shaft; 72, first output shaft; 73, second output shaft;

[0034] 8, motor. DETAILED DESCRIPTION

[0035] The indicating device of the electric operating mechanism of the tap switch of the present application will be further described in detail below in combination with the accompanying drawings and the embodiments of the present application.

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below in combination with the accompanying drawings and the embodiments.

[0037] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0038] It is to be understood that the terms "first", "second", and the like, used in the description and the claims of the present application as well as above-mentioned drawings of the application merely denote like or similar objects and cannot be understood as the description of a particular sequential order or chronologically order. As is apparent from the present disclosure, those skilled in the art will recognize that the sequence of processes, steps, or elements can be carried out in different order as long as the processes, steps, or elements are carried out between the described, illustrated or claimed, processes, steps, or elements. Furthermore, it will be apparent to the skilled person that the use of the terms "include", "includes" and "including" as well as variants thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, product or device that comprises a list of steps or elements, can include those that are not clearly listed or inherent to such processes, methods, products or devices.

[0039] For the purposes of the description hereinafter, a spatial relative term, such as "above", "below", "top", "bottom", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device is inverted, then the described "above" or "top" of other elements or features can become the "below" or "bottom" of the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial relative descriptors used herein interpreted accordingly.

[0040] Referring to Figures 1-7 The utility model provides a technical scheme:

[0041] A kind of indication device of tap switch electric operating mechanism, including indicating disc 1, number of turns pointer 2, gear pointer 3, large gear 4, large gear support device 5;

[0042] The indicating disc 1 is fixed outside the case body 6 of the electric operating mechanism of the tap changer, and comprises two clock faces, one indicating the number of turns, and the other indicating the gear position; the number of turns pointer 2 is fixedly connected with one end of the first output shaft 72 of the electric operating mechanism of the tap changer;

[0043] The gear support device 5 is rotatably fixed inside the case body 6, and supports the gear 4, which is engaged with the gear on the second output shaft 73 of the electric operating mechanism of the tap changer; the gear position pointer 3 is fixed on one side of the gear 4.

[0044] In this way, the number of turns pointer 2 is driven to rotate by the first output shaft 72, and the gear position pointer 3 is driven to rotate by the gear 4, which is simple in structure and reliable in indication, and solves the problem in the prior art that the shaft sleeve of one pointer is outside the shaft of the other pointer, the two shafts for driving the pointers to rotate have high machining precision, and the friction is large when the two shafts rotate relative to each other, which is prone to jamming in the rotating process.

[0045] In order to facilitate reading of the indication state of the indicating device of the electric operating mechanism of the tap changer and the pipe, the gear 4 is coaxial with the first output shaft 72, so that the rotation centers of the number of turns pointer 2 and the gear position pointer 3 are at the same point.

[0046] In order to facilitate the state display of the number of turns pointer 2 and the gear position pointer 3, the indicating disc 1 comprises a small clock face 11 and a large clock face 12, the small clock face 11 and the large clock face 12 are concentric, a first transparent window 13 is arranged at the center of the small clock face 11 and used for displaying the number of turns pointer 2, and a second transparent window 14 is arranged between the small clock face 11 and the large clock face 12 and used for displaying the gear position pointer 3, even if the pointers are at the rear end of the indicating disc, the display can still be achieved. Preferably, the outer side of the indicating disc 31 is a layer of transparent material, such as PVC, and the small clock face 311 and the large clock face 312 are fixed to the inner side of the transparent material.

[0047] In order to facilitate data reading, the surface of the small clock face 11 is concavely provided with an indicating grid, and the surface of the large clock face 12 is concavely provided with an indicating grid, and the indicating grids are painted.

[0048] In order to enable the gear 34 to stably rotate, the gear support device 5 comprises a pin 51 and flange bearings 52, one end of the pin 51 is fixedly connected with the case body 6, two flange bearings 52 are sleeved outside the pin 51, the flanges of the two flange bearings 52 are respectively located at two sides of the gear 34, each two flange bearings 52 form a group, and a plurality of groups of flange bearings 52 support the gear 4, and according to the size of the gear 4, generally 3-8 groups of flange bearings 52 are needed.

[0049] In order to facilitate positioning of the flange bearings 52, a sleeve 53 is arranged outside the pin 51, one end of the sleeve 53 contacts the inner ring of the flange bearing 52, and the other end contacts the case body 6.

[0050] In order to facilitate installation, the indicating device of the tap switch electric operating mechanism further comprises a number of turns pointer ring 21, which is fixed on one end of the first output shaft 72 by a screw, and the number of turns pointer 2 is recessed on the surface of the number of turns pointer ring 21 and is painted in the recess. The number of turns pointer 2 is fixedly connected with one end of the first output shaft 72, and is located behind the first transparent window 13, so that the number of turns pointer 2 can be seen from outside the machine box 6 through the first transparent window 13; the number of turns pointer 2 rotates with the first output shaft 72.

[0051] In order to facilitate installation, the indicating device of the tap switch electric operating mechanism further comprises a gear position pointer ring 31, which is fixed on one side of the gear wheel 4 by a screw, and the gear position pointer 3 is recessed on the surface of the gear position pointer ring 31 and is painted in the recess. The gear position pointer 3 is located at the rear end of the second transparent window 14, so that the gear position pointer 3 can be seen from outside the machine box 6 through the second transparent window 14; the gear wheel 4 is coaxial with the first output shaft 72, so that the number of turns pointer 2 and the gear position pointer 3 are coaxial with the small clock face 11 and the large clock face 12 of the indicating disc 1.

[0052] In an embodiment, the machine box comprises a gear box 61 fixed inside the machine box 6, the motor 8 of the tap switch electric operating mechanism drives the input shaft 71 in the gear box 7 to rotate, the input shaft 71 and the first output shaft 72 are in gear transmission, the transmission ratio is 33, the first output shaft 72 and the second output shaft 73 are in gear transmission, the transmission ratio is 5, and the transmission ratio between the second output shaft 73 and the gear wheel 4 is 7, so that the transmission ratio between the first output shaft 72 and the gear wheel 4 is 35. The small clock face 11 has 33 cells, and the large clock face 12 has 35 cells. At this time, the input shaft 71 rotates one circle, the number of turns pointer 2 rotates one cell with the first output shaft 72, and the number of turns pointer 2 rotates one circle, and the gear position pointer 3 rotates one cell with the gear wheel 4. The pin 51 is fixed on the gear box 61, one end of the sleeve 53 contacts the inner ring of the flange bearing 52, and the other end contacts the gear box 61.

[0053] In summary, the input shaft motor 8 drives the input shaft 71 in the gear box 7 to rotate, the input shaft 71 and the first output shaft 72 are in gear transmission, the transmission ratio is 33, the first output shaft 72 drives the number of turns pointer to rotate, and the input shaft rotates 33 circles, and the number of turns pointer rotates 1 circle. The transmission ratio between the first output shaft 72 and the gear wheel 4 is 35, the first output shaft 72 rotates 35 circles, the gear wheel rotates 1 circle, and the gear position pointer rotates 1 circle.

[0054] The above only describes one embodiment of the present application, and is not used to limit the protection scope of the present application.

Claims

1. An indicating device for an electrically operated mechanism of a tap changer, characterized in that The utility model relates to a kind of electric operating mechanism of distribution switch, including: Indicator dial (1), number of turns pointer (2), gear pointer (3), big gear (4), big gear support device (5); The indicator dial (1) is fixed outside the case body (6) of the electric operating mechanism of distribution switch, and one end of the number of turns pointer (2) is fixedly connected with the first output shaft (72) of the electric operating mechanism of distribution switch. The big gear support device (5) is rotatably fixed inside the case body (6), and the big gear support device (5) supports the big gear (4), the big gear (4) is engaged with the gear on the second output shaft (73) of the electric operating mechanism of distribution switch, and the gear pointer (3) is fixed on one side of the big gear (4).

2. The indicating device for electrically operated mechanisms of tap changers according to claim 1, characterized in that The big gear (4) is coaxial with the first output shaft (72).

3. The indicating device for electrically operated mechanisms of tap changers according to claim 2, characterized in that The indicator dial (1) includes a small clock face (11) and a large clock face (12), the small clock face (11) and the large clock face (12) are concentric, the center of the small clock face (11) is provided with a first transparent window (13), and the second transparent window (14) is arranged between the small clock face (11) and the large clock face (12).

4. The indicating device for electrically operated mechanisms of tap changers according to claim 3, characterized in that The surface of the small clock face (11) is recessed to indicate the grid, and the surface of the large clock face (12) is recessed to indicate the grid.

5. The indicating device for electrically operated mechanisms of tap changers according to claim 4, characterized in that The indicator grid is painted.

6. The indicating device for electrically operated mechanisms of tap changers according to claim 1, characterized in that, The big gear support device (5) includes a pin (51) and a flange bearing (52), one end of the pin (51) is fixedly connected with the case body (6), two flange bearings (52) are sleeved outside the pin (51), the flanges of the two flange bearings (52) are located outside the big gear (4) respectively, and a plurality of flange bearings (52) support the big gear (4).

7. An indicating device for an electrically operated mechanism of a tap changer according to claim 6, characterized in that The outside of the pin (51) is provided with a sleeve (53), one end of the sleeve (53) contacts the inner ring of the flange bearing (52), and the other end contacts the case body (6).

8. The indicating device for electrically operated mechanisms of tap changers according to claim 1, characterized in that Further comprising a number of turns pointer ring (21), the number of turns pointer ring (21) is fixed at one end of the first output shaft (72) by screw, and the number of turns pointer (2) is recessed on the surface of the number of turns pointer ring (21).

9. The indicating device for electrically operated mechanisms of tap changers according to claim 1, characterized in that, Further comprising a gear pointer ring (31), the gear pointer ring (31) is fixed on one side of the big gear (4) by screw, and the gear pointer (3) is recessed on the surface of the gear pointer ring (31).

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