Split type core body of on-load tap-changer and on-load tap-changer

Abstract

The utility model provides an on-load tap-changer split-type core body and an on-load tap-changer, and the on-load tap-changer split-type core body comprises a transmission mechanism which comprises an instantaneous rotating shaft, a slot shifting piece, a grooved wheel and a machine base plate, the grooved wheel comprises a grooved wheel shaft, a switching shaft connected with one end face of the grooved wheel shaft and a gear disc arranged between the grooved wheel shaft and the switching shaft in a sleeved mode, the grooved wheel shaft and the transient rotating shaft are arranged in the machine base plate in a penetrating mode, the transient rotating shaft is sleeved with the groove poking piece, and the transient rotating shaft can drive the groove poking piece to rotate. The slot shifting piece is clamped with a gear of the gear disc so as to drive the gear disc to rotate; and the switching shaft is inserted into the main shaft so as to drive the main shaft to rotate. The transmission mechanism and the main shaft are connected in an inserted mode, so that when the core body is installed and maintained, the whole core body does not need to be installed and taken out every time, the operation process is simplified, the assembling and debugging time is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of on-load tap changers, in particular to a split core body of an on-load tap changer and an on-load tap changer. Background Art

[0002] On-load tap changer is a voltage regulating device suitable for operation under transformer excitation or load, used to change the tapping connection position of transformer winding. Its basic principle is to switch between taps in transformer winding without interrupting load current, thereby changing the number of turns of the winding, that is, the voltage ratio of the transformer, and finally achieving the purpose of voltage regulation.

[0003] The main shaft and transmission mechanism of the existing 10kV small tap changer plug structure are mostly connected as one, and the entire plug needs to be removed during installation and after-sales maintenance. Since the plug of the on-load tap changer is very heavy and the internal space of the switch is very small, it is very difficult for operators to operate and observe, and it takes several people to work together to complete the installation or removal of the plug. Utility Model Content

[0004] The embodiments of the utility model provide a split core of an on-load tap changer and an on-load tap changer, which can improve the technical problems of difficult installation and maintenance of the existing on-load tap changer core.

[0005] In a first aspect, an embodiment of the utility model provides a split core of an on-load tap changer, comprising:

[0006] The transmission mechanism comprises an instantaneous rotation shaft, a slot-shifting member, a groove wheel and a machine base plate, wherein the groove wheel comprises a groove wheel shaft, a switching shaft connected to one end face of the groove wheel shaft and a gear plate sleeved between the groove wheel shaft and the switching shaft, the groove wheel shaft and the instantaneous rotation shaft are passed through the machine base plate, the slot-shifting member is sleeved on the instantaneous rotation shaft and the instantaneous rotation shaft can drive the slot-shifting member to rotate, and the slot-shifting member is engaged with the gear of the gear plate to drive the gear plate to rotate;

[0007] The switching shaft is inserted into the main shaft to drive the main shaft to rotate.

[0008] The beneficial effects of the embodiments of the utility model are as follows: the utility model drives the instantaneous rotating shaft to rotate through the driving device, thereby driving the slot-pushing part to rotate, and then the slot-pushing part drives the gear plate to rotate, thereby driving the groove wheel to rotate, and then driving the main shaft to rotate. The machine base plate can limit the relative position of the groove wheel shaft and the instantaneous rotating shaft to ensure the stability of the transmission process of the transmission mechanism. The connection between the main shaft and the transmission mechanism is achieved by inserting the switching shaft into the main shaft. When installing the entire core body, the main shaft can be placed in the insulating barrel of the tap changer first, and then the transmission mechanism can be inserted into the main shaft. When assembling and debugging the position of the main shaft, it is more convenient to observe because there is no obstruction from the transmission mechanism. Similarly, when repairing the core, the transmission mechanism can be taken out from the main shaft first, and the situation inside the on-load tap changer can be observed. If a problem is found, the main shaft can be taken out.

[0009] In one embodiment, the switching axis includes a plurality of axes, and the plurality of axes are evenly distributed in a circle.

[0010] The beneficial effect of the embodiment of the utility model is that by distributing the multiple shafts in a circular shape, it is convenient to switch the multiple shafts when the switching shaft rotates.

[0011] In one embodiment, the plurality of shafts have different sizes.

[0012] The beneficial effects of the embodiments of the utility model are as follows: by setting the size of the shaft to different sizes, it is convenient to correspond the different shafts of the switching shaft to the gear positions of the main shaft, so that when the switching shaft is inserted into the main shaft, the position of the groove wheel can be fixed, which plays a positioning role.

[0013] In one embodiment, the main shaft includes an upper shaft plate, a lower shaft plate, relatively arranged side shaft plates, a moving contact group and a lead-out contact group, the upper shaft plate and the lower shaft plate are respectively arranged at both ends of the side shaft plate, the moving contact group and the lead-out contact group are respectively arranged between the upper shaft plate and the lower shaft plate, and the switching shaft is inserted into the upper shaft plate.

[0014] In one embodiment, bearings are sleeved on the grooved wheel shaft and the instantaneous rotating shaft, a bearing seat is arranged outside the bearing, and the bearing seat is penetrated into the machine base plate.

[0015] The beneficial effects of the embodiments of the utility model are as follows: the bearing can support the sheave shaft and the instantaneous rotating shaft, reduce the friction coefficient during the movement, and ensure the rotation accuracy. The bearing seat can fix the bearing, which is convenient for installing the sheave shaft and the instantaneous rotating shaft.

[0016] In one embodiment, a protruding shift block is provided on the instantaneous rotation shaft, and a protruding block that can abut against the shift block is provided on the shift groove member.

[0017] The beneficial effects of the embodiments of the utility model are as follows: when the instantaneous rotating shaft rotates, the shifting block thereon rotates, thereby abutting against the protruding block on the shifting groove member, the instantaneous rotating shaft continues to rotate, and the shifting groove member also rotates under the push of the shifting block.

[0018] In one embodiment, the sheave shaft, the switching shaft and the gear plate are integrally arranged.

[0019] The beneficial effects of the embodiments of the utility model are as follows: the grooved wheel shaft, the switching shaft and the gear plate are arranged in one piece, which can increase stability and reduce assembly difficulty.

[0020] In a second aspect, an embodiment of the utility model provides an on-load tap changer, comprising the above-mentioned split core of the on-load tap changer.

[0021] The beneficial effects of the embodiments of the utility model: the utility model connects the transmission mechanism and the main shaft by plugging, so that when installing and repairing the core body, there is no need to install and remove the entire core body every time, which simplifies the operation process, saves assembly and debugging time, improves production efficiency, and makes after-sales maintenance more convenient and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a three-dimensional schematic diagram of a split core of an on-load tap changer provided by an embodiment of the utility model;

[0024] Figure 2 It is a three-dimensional schematic diagram of a sheave provided in an embodiment of the utility model;

[0025] Figure 3 It is a three-dimensional schematic diagram of the instantaneous rotation shaft and the pull groove member provided in the embodiment of the utility model.

[0026] Icons: instantaneous rotation shaft-1, shift block-11, shift groove piece-2, protrusion-21, machine base plate-3, groove wheel-4, groove wheel shaft-41, switching shaft-42, gear plate-43, upper shaft plate-5, bearing seat-6. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0028] See also Figures 1 to 3 , an embodiment of the present application provides a split core of an on-load tap changer, including a transmission mechanism and a main shaft.

[0029] The transmission mechanism includes an instantaneous rotation shaft 1, a slot member 2, a groove wheel 4 and a machine base plate 3. The groove wheel 4 includes a groove wheel shaft 41, a switching shaft 42 connected to one end face of the groove wheel shaft 41 and a gear plate 43 sleeved between the groove wheel shaft 41 and the switching shaft 42. The groove wheel shaft 41, the switching shaft 42 and the gear plate 43 are integrally arranged. The switching shaft 42 includes three shafts of different sizes, and the three shafts are evenly distributed in a circular shape. The groove wheel shaft 41 and the instantaneous rotation shaft 1 are penetrated in the machine base plate 3, and bearings are sleeved on the groove wheel shaft 41 and the instantaneous rotation shaft 1, and the bearings are arranged in a bearing seat 6, and the bearing seat 6 is penetrated in the machine base plate 3, so that the relative position of the groove wheel shaft 41 and the instantaneous rotation shaft 1 can be limited by the machine base plate 3. The shifting groove member 2 is sleeved on the instantaneous rotation shaft 1, and a protruding shifting block 11 is provided on the instantaneous rotation shaft 1 by welding or integrally forming, and a protruding block 21 that can abut against the shifting block 11 is provided on the shifting groove member 2 by welding or integrally forming, so that the instantaneous rotation shaft 1 can drive the shifting groove member 2 to rotate. The shifting groove member 2 is engaged with the gear of the gear plate 43 to drive the gear plate 43 to rotate.

[0030] The main shaft includes an upper shaft plate 5, a lower shaft plate, oppositely arranged side shaft plates, a moving contact group and a lead-out contact group. The upper shaft plate 5 and the lower shaft plate are respectively arranged at the two ends of the side shaft plate, the moving contact group and the lead-out contact group are respectively arranged between the upper shaft plate 5 and the lower shaft plate, and the switching shaft 42 is inserted into the upper shaft plate 5 to drive the main shaft to rotate.

[0031] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A split core of an on-load tap changer, characterized in that: include: A transmission mechanism comprises an instantaneous rotation shaft (1), a slot-shifting member (2), a groove wheel (4) and a machine base plate (3); the groove wheel (4) comprises a groove wheel shaft (41), a switching shaft (42) connected to one end surface of the groove wheel shaft (41) and a gear plate (43) sleeved between the groove wheel shaft (41) and the switching shaft (42); the groove wheel shaft (41) and the instantaneous rotation shaft (1) are inserted into the machine base plate (3); the slot-shifting member (2) is sleeved on the instantaneous rotation shaft (1) and the instantaneous rotation shaft (1) can drive the slot-shifting member (2) to rotate; the slot-shifting member (2) is engaged with a gear of the gear plate (43) to drive the gear plate (43) to rotate; A main shaft, wherein the switching shaft (42) is inserted into the main shaft to drive the main shaft to rotate.

2. The split core of the on-load tap changer according to claim 1, characterized in that: The switching shaft (42) comprises a plurality of shafts, and the plurality of shafts are evenly distributed in a circular shape.

3. The split core of the on-load tap changer according to claim 2, characterized in that: The plurality of shafts have different sizes.

4. The split core of the on-load tap changer according to claim 1, characterized in that: The main shaft comprises an upper shaft plate (5), a lower shaft plate, oppositely arranged side shaft plates, a moving contact group and a lead-out contact group, the upper shaft plate (5) and the lower shaft plate are respectively arranged at two ends of the side shaft plate, the moving contact group and the lead-out contact group are respectively arranged between the upper shaft plate (5) and the lower shaft plate, and the switching shaft (42) is inserted into the upper shaft plate (5).

5. The split core of the on-load tap changer according to claim 1, characterized in that: The grooved wheel shaft (41) and the instantaneous rotating shaft (1) are sleeved with bearings, a bearing seat (6) is arranged outside the bearing, and the bearing seat (6) is inserted into the machine base plate (3).

6. The split core of the on-load tap changer according to claim 1, characterized in that: The instantaneous rotation shaft (1) is provided with a protruding shifting block (11), and the shifting groove member (2) is provided with a protruding block (21) that can abut against the shifting block (11).

7. The split core of the on-load tap changer according to claim 1, characterized in that: The grooved wheel shaft (41), the switching shaft (42) and the gear plate (43) are integrally arranged.

8. An on-load tap changer, characterized in that: It comprises the split core of the on-load tap changer as claimed in any one of claims 1 to 7.

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