CN215680516U - Device for realizing operation switching interlocking of main knife and ground knife of isolating switch - Google Patents
Device for realizing operation switching interlocking of main knife and ground knife of isolating switch Download PDFInfo
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- CN215680516U CN215680516U CN202121040339.6U CN202121040339U CN215680516U CN 215680516 U CN215680516 U CN 215680516U CN 202121040339 U CN202121040339 U CN 202121040339U CN 215680516 U CN215680516 U CN 215680516U
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Abstract
The utility model discloses a device for realizing the operation switching interlocking of a main knife and a ground knife of an isolating switch, which comprises a mounting frame; the mounting frame is rotatably provided with a switch rotating shaft, a main knife rotating shaft and a ground knife rotating shaft, and the switch rotating shaft is connected with an external operating mechanism so as to rotate along the axis of the switch rotating shaft; the main knife rotating shaft and the ground knife rotating shaft are parallel to the switch rotating shaft and are arranged at two sides of the switch rotating shaft, and the switch driving plate, the main knife grooved wheel and the ground knife grooved wheel are respectively and fixedly sleeved on the switch rotating shaft, the main knife rotating shaft and the ground knife rotating shaft; the main knife grooved wheel and the ground knife grooved wheel are respectively provided with an inward concave locking arc and at least two radial grooves, the switch drive plate is provided with an outward convex arc matched with the inward concave locking arc, and at least two bulges capable of being in lap joint with the radial grooves or being separated from the lap joint are arranged on the switch drive plate at intervals. The utility model prevents the main knife and the ground knife from being operated simultaneously, avoids the possibility of simultaneous switch-on of the main knife and the ground knife, and can effectively prevent safety accidents caused by mechanical locking failure due to manual misoperation.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to a device for realizing operation switching and interlocking of a main knife and a ground knife of an isolating switch.
Background
In the electric power transmission and distribution system, outdoor high-voltage isolating switch main blade and earthing knife are often used in a matched mode, the isolating switch main blade and the earthing knife are operated through independent operating mechanisms, in order to prevent misoperation and guarantee safe operation of a power grid, mechanical locking needs to be arranged between the main blade and the earthing knife, the earthing knife cannot be switched on when the isolating switch main blade is switched on, and the isolating switch main blade cannot be switched on when the earthing knife is switched on. However, in the actual operation process of the mechanical locking, the mechanical locking is easy to be unreliable due to the problems of strength of parts, locking clearance, large operation torque and the like.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a device for realizing the operation switching interlocking of the main knife and the grounding knife of the isolating switch, so that the main knife and the grounding knife cannot be operated simultaneously, and the possibility of simultaneous switching on of the main knife and the grounding knife is avoided.
The device for realizing the operation switching interlocking of the main knife and the ground knife of the isolating switch comprises a mounting frame; the mounting frame is rotatably provided with a switch rotating shaft, a main knife rotating shaft and a ground knife rotating shaft, and the switch rotating shaft is connected with an external operating mechanism so as to rotate along the axis of the switch rotating shaft; the main knife rotating shaft and the ground knife rotating shaft are parallel to the switch rotating shaft and are arranged on two sides of the switch rotating shaft, and the switch driving plate, the main knife grooved wheel and the ground knife grooved wheel are respectively and fixedly sleeved on the switch rotating shaft, the main knife rotating shaft and the ground knife rotating shaft; the main knife grooved wheel and the ground knife grooved wheel are respectively provided with an inward concave locking arc and at least two radial grooves, the switch drive plate is provided with an outward convex arc matched with the inward concave locking arc, and at least two bulges capable of being in lap joint with or separated from the radial grooves are arranged on the switch drive plate at intervals.
The device for realizing the operation switching interlocking of the main knife and the ground knife of the isolating switch according to the embodiment of the utility model at least has the following beneficial effects: in an initial state, when the main knife needs to be switched on, an external operating mechanism controls a switch rotating shaft to rotate anticlockwise, a protrusion on a switch driving plate drives a main knife grooved wheel and a ground knife grooved wheel to rotate clockwise, the protrusion and the ground knife grooved wheel (radial groove) are gradually separated from lapping, the protrusion and the main knife grooved wheel (radial groove) are gradually lapped from only one to form two protrusions which are simultaneously lapped with the main knife grooved wheel (radial groove), and the main knife is switched on; under the condition of switching on the main knife, when the ground knife needs to be adjusted to be switched on, the external operating mechanism controls the switch rotating shaft to rotate clockwise, the protrusion on the switch driving plate drives the main knife grooved wheel and the ground knife grooved wheel to rotate anticlockwise, the protrusion on the switch driving plate and the main knife grooved wheel (radial groove) are gradually separated from lapping, and finally, two protrusions are formed and are lapped with the ground knife grooved wheel (radial groove) together, so that switching on the main knife is converted into switching on the ground knife. Compared with the prior art, the utility model ensures that the main knife and the ground knife can not be operated simultaneously, avoids the possibility of simultaneous switch-on of the main knife and the ground knife, and can effectively prevent safety accidents caused by mechanical locking failure due to manual misoperation.
According to some embodiments of the present invention, a line connecting the two protrusions and a center of the switch dial is less than or equal to 90 °.
According to some embodiments of the utility model, the protrusion is a cylindrical pin.
According to some embodiments of the utility model, a main knife connecting lever and a ground knife connecting lever are respectively mounted on the tops of the main knife rotating shaft and the ground knife rotating shaft, and the main knife connecting lever and the ground knife connecting lever are used for being connected with an external operating mechanism to complete main knife switching-on or ground knife switching-on operation.
According to some embodiments of the present invention, the switch shaft penetrates through a middle portion of the mounting plate and extends downward for connection with an external operating mechanism to control a rotation angle and a rotation direction of the switch shaft.
According to some embodiments of the utility model, a connecting piece for connecting with an external operating mechanism is installed at the bottom of the switch rotating shaft.
According to some embodiments of the utility model, the top of the switch rotating shaft is provided with a limit structure for preventing the switch driving plate from slipping.
According to some embodiments of the utility model, the protrusion is sleeved with an oilless shaft sleeve, and the oilless shaft sleeve is sleeved with a protective sleeve for preventing abrasion.
According to some embodiments of the utility model, a shield is mounted on the mounting bracket.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of an assembly structure of a device for realizing the operation switching interlocking of a main blade and a ground blade of an isolating switch according to an embodiment of the utility model;
FIG. 2 is a front view of the device for interlocking the operation and switching of the main blade and the ground blade of the isolating switch shown in FIG. 1;
FIG. 3 is a top view of the device for interlocking the operation and switching of the main blade and the ground blade of the isolating switch shown in FIG. 1;
fig. 4 is a schematic view of the installation structure of the protective cover (114) of the device for realizing the operation switching interlocking of the main blade and the ground blade of the isolating switch shown in fig. 1;
FIG. 5 is a dynamic diagram (initial state diagram) of the main and ground knife switching off;
FIG. 6 is a dynamic diagram of main knife closing and ground knife opening;
fig. 7 is a dynamic diagram of the earth knife closing and the main knife opening.
Reference numerals:
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following describes an apparatus for realizing the interlocking of the main blade and the ground blade of the disconnecting switch by switching operation according to the embodiment of the utility model with reference to fig. 1 to 7.
Referring to fig. 1 to 7, the device for realizing the operation switching interlocking of the main blade and the ground blade of the disconnecting switch comprises a mounting frame 100. As shown in fig. 1 to 3, the mounting bracket 100 is provided with a switch rotating shaft 101, a main knife rotating shaft 102 and a ground knife rotating shaft 103 penetrating through the mounting bracket 100, and the switch rotating shaft 101, the main knife rotating shaft 102 and the ground knife rotating shaft 103 can rotate around their axes. A switch dial 104, a main knife sheave 105 and a ground knife sheave 106 are respectively and fixedly sleeved on the switch rotating shaft 101, the main knife rotating shaft 102 and the ground knife rotating shaft 103. As shown in fig. 1, in the present embodiment, the main sheave 105 and the ground sheave 106 respectively have an inward concave locking arc and at least two radial grooves 107, the switch dial 104 has an outward convex arc adapted to the inward concave locking arc, and at least two protrusions 108 capable of overlapping with the radial grooves 107 are provided at intervals on the switch dial 104, and the protrusions 108 gradually disengage from the radial grooves 107 along with the rotation of the switch dial 104, forming a device similar to a double outer sheave mechanism.
It is easy to think that, as shown in fig. 1, in the present embodiment, four radial grooves 107 are respectively provided on the main cutter sheave 105 and the ground cutter sheave 106, and the angle therebetween is 90 °, and two protrusions 108 are provided. The line connecting the two projections 108 with the center of the switch dial 104 is also 90 °, corresponding to the radial groove 107. Moreover, in this embodiment, an included angle between the two protrusions 108 and a connecting line of the circle centers of the switch dial 104 should be smaller than or equal to 90 °, and then, radial grooves 107 with corresponding angles can be disposed on the main knife sheave 105 and the ground knife sheave 106, so that the two protrusions 108 can be overlapped with the two radial grooves 107 at the same time, and then the switching on and off of the main knife and the ground knife can be realized.
As shown in fig. 6, when the two protrusions 108 overlap with the two radial grooves 107 on the primary knife sheave 105, the primary knife is closed and the ground knife is opened. Similarly, as shown in fig. 7, when the two protrusions 108 and the two radial grooves 107 on the ground knife sheave 106 overlap, the ground knife is in a state of being switched on and the main knife is switched off. When the two protrusions 108 are in the state shown in fig. 5, the initial state of the device is that the main knife is opened and the ground knife is also opened.
When the switch is used, the switch spindle is connected with an operating mechanism, and the operating mechanism can control the switch rotating shaft 101 to rotate along the axis of the operating mechanism. The main blade rotating shaft 102 and the ground blade rotating shaft 103 are disposed on two sides of the switch rotating shaft 101 and are both parallel to the switch rotating shaft 101, so that when the switch rotating shaft 101 rotates, the protrusion 108 can drive the main blade rotating shaft 102 and the ground blade rotating shaft 103 to rotate along their own axes. In particular, when the main blade rotating shaft 102 and the ground blade rotating shaft 103 are out of overlap with the protrusion 108, they do not rotate any more. The main knife rotating shaft 102 and the ground knife rotating shaft 103 drive the crank arm to rotate so as to realize main knife switching-on and ground knife switching-on or main and ground knife switching-off.
The working principle of the utility model is then as follows:
in an initial state, as shown in fig. 5, when the main knife needs to be switched on, the external operating mechanism controls the switch rotating shaft 101 to rotate counterclockwise, the protrusion 108 on the switch dial 104 drives the main knife sheave 105 and the ground knife sheave 106 to rotate clockwise, the protrusion 108 and the radial groove 107 of the ground knife sheave 106 gradually separate from each other and overlap, and the ground knife sheave 106 stops rotating. The protrusion 108 and the radial groove 107 of the main knife sheave 105 gradually overlap from only one to two protrusions 108 and the main knife sheave 105 (the radial groove 107) overlap at the same time, so that the main knife is switched on (i.e. the process from fig. 5 to fig. 6); under the condition of closing the main knife, when the ground knife needs to be adjusted to be closed, the external operating mechanism controls the switch rotating shaft 101 to rotate clockwise, the protrusion 108 on the switch dial 104 drives the main knife sheave 105 and the ground knife sheave 106 to rotate anticlockwise, and after the protrusion 108 on the switch dial 104 and the main knife sheave 105 (radial groove 107) are gradually separated from lapping, the main knife sheave 105 stops rotating. Finally, two protrusions 108 are overlapped with the ground knife grooved wheel (106 radial grooves 107), so that the main knife closing is converted into the ground knife closing (namely, the process from fig. 6 to fig. 5 to fig. 7) is realized.
In particular, in the present embodiment, as shown in FIG. 1, the protrusion 108 is a cylindrical pin. An oilless shaft sleeve 112 is arranged on the cylindrical pin, and a protective sleeve 113 for preventing abrasion is sleeved on the oilless shaft sleeve 112.
As shown in fig. 1 to 3, in the present embodiment, a main blade connecting lever 109 and a ground blade connecting lever 110 are respectively installed at the top of the main blade rotating shaft 102 and the ground blade rotating shaft 103, and the main blade connecting lever 109 and the ground blade connecting lever 110 are used for connecting with an external operating mechanism to complete a main blade closing or ground blade closing operation. As shown in fig. 1, it can be seen that when the switch dial 104 rotates, the main blade rotating shaft 102 and the ground blade rotating shaft 103 can be driven to rotate, so as to drive the main blade crank arm 109 and the ground blade crank arm 110 to rotate to a proper angle, so as to complete the closing or opening of the main blade and the ground blade.
In the present embodiment, as shown in fig. 1, the switch rotating shaft 101 penetrates the middle of the mounting plate and extends downward for connecting with an external operating mechanism to control the rotating angle and rotating direction of the switch rotating shaft 101. In this embodiment, in the state shown in fig. 5, the device needs to control the switch rotating shaft 101 to rotate 90 ° clockwise, so as to implement the main knife closing and the main knife opening. Or the rotating shaft rotates 90 degrees anticlockwise to realize the switching-on of the ground knife and the switching-off of the main knife. In addition, a connecting piece 111 for connecting with an external operating mechanism is also arranged at the bottom of the switch rotating shaft 101. The connecting member 111 may be a connecting flange for connecting with an external operating mechanism.
In this embodiment, as shown in fig. 1, a position limiting structure for preventing the switch dial 104 from slipping is provided on the top of the switch rotating shaft 101. In this embodiment, the limit structure includes a pin hole provided on the switch rotation shaft 101 and a limit pin fitting lock to prevent the switch dial 104 from sliding out from the top. In this embodiment, as shown in fig. 4, a protective cover 114 is further disposed on the mounting block 100. The protective cover 114 is used to shield dust and protect the device.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A device for realizing the operation switching interlocking of a main knife and a ground knife of an isolating switch is characterized by comprising a mounting frame (100);
the mounting rack (100) is rotatably provided with a switch rotating shaft (101), a main knife rotating shaft (102) and a ground knife rotating shaft (103), and the switch rotating shaft (101) is connected with an external operating mechanism so as to rotate along the axis of the switch rotating shaft;
the main knife rotating shaft (102) and the ground knife rotating shaft (103) are parallel to the switch rotating shaft (101) and are arranged on two sides of the switch rotating shaft (101), and the switch driving plate (104), the main knife grooved wheel (105) and the ground knife grooved wheel (106) are respectively and fixedly sleeved on the switch rotating shaft (101), the main knife rotating shaft (102) and the ground knife rotating shaft (103);
the main knife sheave (105) and the ground knife sheave (106) are respectively provided with an inward concave locking arc and at least two radial grooves (107), the switch dial plate (104) is provided with an outward convex arc matched with the inward concave locking arc, and at least two protrusions (108) capable of being overlapped with or separated from the radial grooves (107) are arranged on the switch dial plate (104) at intervals.
2. The device for realizing the operation, switching and interlocking of the main blade and the ground blade of the isolating switch according to claim 1 is characterized in that: the connecting line of the two bulges (108) and the circle center of the switch dial (104) is less than or equal to 90 degrees.
3. The device for realizing the operation, switching and interlocking of the main blade and the ground blade of the isolating switch according to claim 2 is characterized in that: the bulge (108) is a cylindrical pin.
4. The device for realizing the operation, switching and interlocking of the main blade and the ground blade of the isolating switch according to any one of claims 1 to 3, is characterized in that: the top of the main knife rotating shaft (102) and the top of the ground knife rotating shaft (103) are respectively provided with a main knife connecting lever (109) and a ground knife connecting lever (110), and the main knife connecting lever (109) and the ground knife connecting lever (110) are used for being connected with an external operating mechanism to complete main knife switching-on or ground knife switching-on operation.
5. The device for realizing the operation, switching and interlocking of the main blade and the ground blade of the isolating switch according to claim 4 is characterized in that: the switch rotating shaft (101) penetrates through the middle of the mounting plate and extends downwards to be connected with an external operating mechanism so as to control the rotating angle and the rotating direction of the switch rotating shaft (101).
6. The device for realizing the operation, switching and interlocking of the main blade and the ground blade of the isolating switch according to claim 5 is characterized in that: and a connecting piece (111) used for being connected with an external operating mechanism is installed at the bottom of the switch rotating shaft (101).
7. The device for realizing the operation, switching and interlocking of the main blade and the ground blade of the isolating switch according to claim 6 is characterized in that: the top of the switch rotating shaft (101) is provided with a limiting structure for preventing the switch driving plate (104) from slipping.
8. The device for realizing the operation, switching and interlocking of the main blade and the ground blade of the isolating switch according to any one of claims 5 to 7, is characterized in that: an oilless shaft sleeve (112) is sleeved on the bulge (108), and a protective sleeve (113) for preventing abrasion is sleeved on the oilless shaft sleeve (112).
9. The device for realizing the operation, switching and interlocking of the main blade and the ground blade of the isolating switch according to claim 8 is characterized in that: and a protective cover (114) is arranged on the mounting rack (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121040339.6U CN215680516U (en) | 2021-05-14 | 2021-05-14 | Device for realizing operation switching interlocking of main knife and ground knife of isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121040339.6U CN215680516U (en) | 2021-05-14 | 2021-05-14 | Device for realizing operation switching interlocking of main knife and ground knife of isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215680516U true CN215680516U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121040339.6U Active CN215680516U (en) | 2021-05-14 | 2021-05-14 | Device for realizing operation switching interlocking of main knife and ground knife of isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215680516U (en) |
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2021
- 2021-05-14 CN CN202121040339.6U patent/CN215680516U/en active Active
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Address after: 410000 No. 393, section 3, Jinxing North Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: Chang Hi-Tech New Technology Co.,Ltd. Patentee after: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR Co.,Ltd. Address before: 411400, No. 393, section 3, North Jinxing Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province Patentee before: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR GROUP Co.,Ltd. Patentee before: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR Co.,Ltd. |