CN216957860U - Combined electrical cabinet and grounding auxiliary knife device thereof - Google Patents
Combined electrical cabinet and grounding auxiliary knife device thereof Download PDFInfo
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- CN216957860U CN216957860U CN202220708868.7U CN202220708868U CN216957860U CN 216957860 U CN216957860 U CN 216957860U CN 202220708868 U CN202220708868 U CN 202220708868U CN 216957860 U CN216957860 U CN 216957860U
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- pull rod
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Abstract
The utility model discloses a grounding auxiliary knife device of a combined electrical cabinet, which comprises a linkage, support and closing static component; the linkage assembly comprises a first crank arm, a pull rod, a pull plate and a second crank arm which are sequentially hinged, and the first crank arm is provided with a first assembling hole matched with the load switch spindle; the supporting assembly comprises a grounding switch bracket and an installation shaft which can be rotatably installed on the grounding switch bracket; the mounting shaft is provided with a grounding moving contact; the grounding switch bracket is provided with a sliding chute, and the pull rod can be clamped in the sliding chute in a sliding manner; the mounting shaft is inserted into a second assembling hole of the second crank arm and is fixedly connected with the second crank arm; the closing static component comprises a sleeve and a grounding static contact; when the main shaft rotates, the mounting shaft is driven to rotate simultaneously through the linkage assembly, so that the grounding moving contact is closed and opened with the grounding fixed contact. The linkage assembly in the grounding auxiliary knife device is driven by the main shaft of the load switch to enable the mounting shaft to rotate, grounding closing and opening are achieved, the linkage assembly is simple in structure, and the occupied size is small. The utility model also discloses a combined electrical cabinet.
Description
Technical Field
The utility model relates to the technical field of electrical equipment, in particular to a grounding auxiliary knife device of a combined electrical cabinet and the combined electrical cabinet.
Background
The combined electric appliance cabinet plays a role in control and protection in a 10kV middle and small-capacity terminal user distribution transformer, a combined electric appliance formed by a high-voltage load switch and a high-voltage fuse replaces a high-voltage circuit breaker adopted in the past, wherein the load switch and the fuse respectively play a role in breaking normal load current and short-circuit current, and the combined electric appliance cabinet is widely applied to a 10kV box-type substation. And the earthing knife device can also eliminate the residual voltage in the circuit while guaranteeing the reliable earthing of load switch break-make circuit in the combined electrical apparatus cabinet, avoids the electric shock danger appearing when overhauing, guarantees maintainer's safety.
In the prior art, the grounding auxiliary knife device adopts a load switch mechanism to drive a load switch to perform switching-on, switching-off and grounding switching-on, and the grounding switching-on and grounding switching-off of the grounding auxiliary knife device are realized through a linkage piece.
In addition, the structure has more parts, a complicated transmission process, low reliability in the action process and easy occurrence of the phenomena of closing and opening rejection of the grounding auxiliary knife device, and the closing speed and the opening speed of the load switch are easily influenced.
In summary, the problem to be solved by those skilled in the art needs to be solved how to provide a grounding auxiliary knife device with a simple transmission structure to reduce the volume and the cost.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a grounding auxiliary knife device of a combined electrical appliance cabinet, wherein a linkage assembly only comprises a first crank arm, a pull rod, a pull plate and a second crank arm which are sequentially hinged, the number of components is small, the structure is simple, the occupied size is small, the reduction of the size of the combined electrical appliance cabinet is facilitated, and the cost can be saved. The utility model also provides a combined electrical appliance cabinet applying the grounding auxiliary knife device, which has the advantages of few internal components, simple structure, convenience in layout and low cost.
In order to achieve the purpose, the utility model provides the following technical scheme:
a knife device is assisted in combination electrical apparatus cabinet's ground connection includes:
the linkage assembly comprises a first crank arm, a pull rod, a pull plate and a second crank arm which are sequentially hinged, and the first crank arm is provided with a first assembling hole which is in plug-in fit with a main shaft of the load switch;
the supporting assembly comprises a grounding switch bracket and a mounting shaft which can be rotatably mounted on the grounding switch bracket; the mounting shaft is provided with a grounding moving contact; the grounding switch bracket is provided with a sliding groove, and the pull rod can be clamped in the sliding groove in a sliding manner; the mounting shaft is inserted into a second assembling hole of the second crank arm and is fixedly connected with the second crank arm;
the static closing assembly comprises a sleeve and a grounding static contact arranged on the sleeve;
when the main shaft rotates, the mounting shaft can be driven to rotate simultaneously through the linkage assembly, so that the grounding moving contact and the grounding static contact are switched on and switched off.
Preferably, in the above-mentioned auxiliary grounding cutter device, the pull rod includes an upper pull rod hinged to the first crank arm and a lower pull rod hinged to the pull plate, the upper pull rod and the lower pull rod are connected through an adjusting screw sleeve, and the distance between the upper pull rod and the lower pull rod can be adjusted when the adjusting screw sleeve is rotated.
Preferably, in the above auxiliary grounding cutter device, the sliding groove is a straight groove.
Preferably, in the above-described auxiliary ground cutter device, the slide groove is arranged in a vertical direction.
Preferably, in the auxiliary grounding cutter device, the first mounting hole is a hexagonal hole, and the main shaft is in a hexagonal prism shape adapted to the hexagonal hole.
Preferably, in the above-described auxiliary ground cutter device, the mounting shaft is a square shaft, and the shape of the second mounting hole matches the shape of the cross section of the mounting shaft.
Preferably, in the above-mentioned auxiliary grounding cutter device, the grounding movable contacts are plural, and each of the grounding movable contacts is sequentially arranged along the mounting shaft.
Preferably, in the auxiliary grounding cutter device, the mounting shaft is detachably mounted to the grounding switch bracket through a trip lever.
Preferably, in the auxiliary grounding cutter device, when the main shaft rotates in a preset direction, the main shaft sequentially reaches a closing angle of the load switch, a switching-off angle of the load switch, and a grounding and closing angle of the load switch; or the main shaft sequentially reaches the opening angle of the load switch, the closing angle of the load switch and the grounding closing angle of the load switch when rotating along the preset direction.
A combined electrical cabinet comprises a grounding auxiliary knife device, wherein the grounding auxiliary knife device is the grounding auxiliary knife device in any one of the technical schemes.
The utility model provides a grounding auxiliary knife device of a combined electrical cabinet, which comprises a linkage component, a supporting component and a closing static component, wherein the linkage component is connected with the supporting component; the linkage assembly comprises a first crank arm, a pull rod, a pull plate and a second crank arm which are sequentially hinged, and the first crank arm is provided with a first assembling hole matched with a main shaft of the load switch; the supporting assembly comprises a grounding switch bracket and an installation shaft which can be rotatably installed on the grounding switch bracket; the installation shaft is provided with a grounding moving contact; the grounding switch bracket is provided with a sliding chute, and the pull rod can be clamped in the sliding chute in a sliding manner; the mounting shaft is inserted into a second assembling hole of the second crank arm and is fixedly connected with the second crank arm; the static closing assembly comprises a sleeve and a grounding static contact arranged on the sleeve; when the main shaft rotates, the mounting shaft can be driven to rotate simultaneously through the linkage assembly, so that the grounding moving contact and the grounding static contact are switched on and switched off.
In the grounding auxiliary knife device of the combined electrical cabinet, the linkage assembly is driven by the main shaft of the load switch to rotate the mounting shaft provided with the grounding moving contact, so that grounding switching-on and grounding switching-off are realized.
The utility model also provides a combined electrical appliance cabinet applying the grounding auxiliary knife device, which has the advantages of few internal components, simple structure, convenience in layout and low cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a grounding auxiliary knife device according to an embodiment of the present invention;
fig. 2 is a connection structure diagram of the grounding auxiliary blade device when the load switch is in the switch-on position according to the embodiment of the present invention;
FIG. 3 is a side view of the device of FIG. 2;
FIG. 4 is another side view of the device of FIG. 2;
fig. 5 is a connection structure diagram of the grounding auxiliary blade device when the load switch is in the switch-off position according to the embodiment of the present invention;
FIG. 6 is a side view of the device of FIG. 5;
FIG. 7 is another side view of the device of FIG. 5;
fig. 8 is a schematic structural diagram of the grounding auxiliary knife device provided in the embodiment of the present invention when the auxiliary knife device is in grounding and closing;
FIG. 9 is a side view of the device of FIG. 8;
FIG. 10 is another side view of the device of FIG. 8;
fig. 11 is an assembly view of a grounding auxiliary knife device and a load switch according to an embodiment of the present invention;
wherein, in fig. 1-11:
a first crank arm 101; a first pin 102; an upper tie rod 103; an adjusting screw sleeve 104; a lower tie bar 105; a second crank arm 106; a second pin 107; a pull plate 108; a ground switch bracket 109; mounting a shaft 110; a third pin 111; a grounding moving contact 112; a trip crank arm 113; a main shaft 114; a grounded stationary contact 115; a sleeve 116.
Detailed Description
The embodiment of the utility model discloses a grounding auxiliary knife device of a combined electrical appliance cabinet, wherein a linkage assembly only comprises a first crank arm, a pull rod, a pull plate and a second crank arm which are sequentially hinged, the number of components is small, the structure is simple, the occupied size is small, the reduction of the size of the combined electrical appliance cabinet is facilitated, and the cost can be saved. The embodiment of the utility model also discloses a combined electrical appliance cabinet applying the grounding auxiliary knife device, which has the advantages of fewer internal parts, simple structure, convenience in layout and low cost.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 11, an embodiment of the present invention provides a grounding auxiliary knife device of a combined electrical cabinet, including a linkage assembly, a supporting assembly and a closing static assembly; the linkage assembly comprises a first crank arm 101, a pull rod, a pull plate 108 and a second crank arm 106 which are sequentially hinged, wherein the first crank arm 101 is provided with a first assembling hole which is in plug-in fit with a main shaft 114 of the load switch; the support assembly comprises a grounding switch bracket 109 and a mounting shaft 110 rotatably mounted to the grounding switch bracket 109; the mounting shaft 110 is provided with a grounding moving contact 112; the grounding switch bracket 109 is provided with a chute, and the pull rod can be clamped in the chute in a sliding manner; the mounting shaft 110 is inserted into a second mounting hole of the second crank arm 106 and fixedly connected with the second crank arm 106; the static closing assembly comprises a sleeve 116 and a grounding static contact 115 arranged on the sleeve 116; when the main shaft 114 rotates, the mounting shaft 110 can be driven to rotate simultaneously through the linkage assembly, so that the grounding moving contact 112 mounted on the mounting shaft 110 and the grounding fixed contact 115 are switched on and off.
In the grounding auxiliary knife device of the combined electrical appliance cabinet provided by the embodiment, the linkage component is driven by the main shaft 114 of the load switch, so that the mounting shaft 110 provided with the grounding moving contact 112 rotates, and therefore grounding switching-on and grounding switching-off are achieved.
Preferably, in the above ground-engaging auxiliary blade device, the tie bar includes an upper tie bar 103 hinged to the first crank arm 101 and a lower tie bar 105 hinged to the tie plate 108, the upper tie bar 103 and the lower tie bar 105 are connected by an adjusting screw sleeve 104, and the distance between the upper tie bar 103 and the lower tie bar 105 can be adjusted by rotating the adjusting screw sleeve 104.
In the earthing auxiliary knife device provided by the embodiment, the pull rod is of a non-integrated structure and comprises an upper pull rod and a lower pull rod which are connected through an adjusting screw sleeve 104, so that the overall size of the pull rod is adjustable and the pull rod is adaptive to various combined electrical cabinets.
In the auxiliary grounding knife device provided in the above embodiment, one end of the pull rod is hinged to the first crank arm 101 through the first pin 102. The spout of earthing switch support is the straight flute, and is specific, and the spout is arranged along vertical direction. The other end of the pull rod is hinged with one end of the pull plate 108 through a second pin shaft 107, and the second pin shaft 107 can be inserted into the sliding groove in a sliding manner along the sliding groove. The other end of the pulling plate 108 is hinged with the second crank arm 106 through a third pin 111. In order to ensure that the linkage assembly is precisely driven by the pulling plate 108 and the second crank arm 106 during the movement, an arc-shaped sliding groove matched with the movement track of the third pin 111 is formed in the grounding switch bracket 109, and the third pin 111 is inserted into the arc-shaped sliding groove.
In the auxiliary grounding cutter device provided by the embodiment, the pull rod, the second pin shaft 107, the pull plate 108, the third pin shaft 111 and the second crank arm 106 form a single connecting rod structure, so that the structure is simple, and the transmission is reliable.
In order to ensure that the main shaft 114 synchronously drives the first crank arm 101 to rotate when rotating, in the auxiliary grounding cutter device, the first assembling hole is a hexagonal hole, and the main shaft 114 is in a hexagonal prism shape matched with the hexagonal hole. For the same purpose, it is ensured that the second crank arm 106 synchronously drives the mounting shaft 110 to rotate, the mounting shaft 110 is configured as a square shaft, and the shape of the second assembling hole matches the cross-sectional shape of the mounting shaft 110.
The number of the grounding moving contacts 112 mounted on the mounting shaft 110 is plural, and each grounding moving contact 112 is sequentially arranged along the mounting shaft 110, specifically, 3. One end of the mounting shaft 110 is detachably mounted on the earthing switch bracket 109 through a tripping crank arm 113, so that the assembly, disassembly and maintenance are convenient. The earthing switch bracket 109 is mounted on a gas box in a combination electrical cabinet.
In the above-mentioned earthing auxiliary knife device, when the main shaft 114 rotates along the preset direction, the closing angle of the load switch, the opening angle of the load switch, and the earthing and closing angle of the load switch are reached in sequence; or the main shaft 114 sequentially reaches the opening angle of the load switch, the closing angle of the load switch, and the grounding closing angle of the load switch when rotating in the preset direction.
The grounding auxiliary knife device provided by the embodiment has the advantages of few parts, simple transmission process, high reliability in the action process and capability of avoiding influencing the closing speed and the opening speed of the load switch and preventing the phenomena of closing and opening of the grounding auxiliary knife device.
The motion process of the main shaft of the load switch is described as follows:
how the switch-on position of the load switch corresponds to the switch-on state of the grounding auxiliary knife device is shown in 2-4, the first crank arm 101 is arranged at the lowest end of the radial rotation of the main shaft 114, the second pin shaft 107 is arranged at the lowest end of the sliding chute, and the third pin shaft 111 in the single connecting rod structure is arranged at one end of the arc-shaped sliding chute;
the switch-off state of the load switch corresponding to the switch-off position of the grounding auxiliary knife device is shown in fig. 5-7, the main shaft 114 rotates clockwise in fig. 5, the pull rod drives the second pin shaft 107 to do longitudinal linear motion, at this time, the second pin shaft 107 is located in the middle of the sliding groove, the third pin shaft 111 in the single connecting rod structure moves along the arc-shaped sliding groove and is specifically located in the middle of the arc-shaped sliding groove, and at this time, the grounding moving contact 112 realizes the switch-off state;
when the load switch is in a grounding and closing state corresponding to the grounding auxiliary knife device, as shown in fig. 8-10, the main shaft 114 of the load switch continuously rotates clockwise and drives the pull rod to continuously move upward to the uppermost end of the sliding chute on the basis of the state shown in fig. 5, and the third pin 111 in the single-link structure moves to the other end along the arc-shaped sliding chute, so that the grounding moving contact 112 and the grounding static contact 115 realize grounding and closing.
The grounding auxiliary knife device provided by the embodiment converts the radial rotary motion of the main shaft 114 into longitudinal linear motion through the first crank arm 101 and the pull rod, and then converts the radial rotary motion of the mounting shaft 110 into the radial rotary motion through the second pin shaft 107, the pull plate 108, the third pin shaft 111 and the second crank arm 106.
The embodiment of the utility model also provides a combined electrical cabinet which comprises the grounding auxiliary knife device.
Specifically, the combined electrical appliance cabinet is a 10kV sulfur hexafluoride gas insulation combined electrical appliance cabinet.
The grounding auxiliary knife device provided by the embodiment is applied to the combined electrical cabinet provided by the embodiment, the internal components are few, the structure is simple, the layout is convenient, and the cost is low. Certainly, the combined electrical cabinet provided by the embodiment also has other effects related to the grounding auxiliary knife device provided by the above embodiment, and details are not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a sword device is assisted in ground connection of combination electric appliance cabinet which characterized in that includes:
the linkage assembly comprises a first crank arm, a pull rod, a pull plate and a second crank arm which are sequentially hinged, wherein the first crank arm is provided with a first assembling hole which is matched with a main shaft of the load switch in an inserting manner;
the supporting assembly comprises a grounding switch bracket and a mounting shaft which can be rotatably mounted on the grounding switch bracket; the mounting shaft is provided with a grounding moving contact; the grounding switch bracket is provided with a sliding groove, and the pull rod can be clamped in the sliding groove in a sliding manner; the mounting shaft is inserted into a second assembling hole of the second crank arm and is fixedly connected with the second crank arm;
the static closing assembly comprises a sleeve and a grounding static contact arranged on the sleeve;
when the main shaft rotates, the mounting shaft can be driven to rotate simultaneously through the linkage assembly, so that the grounding moving contact and the grounding static contact are switched on and switched off.
2. The ground-engaging auxiliary knife device according to claim 1, wherein the pull rod comprises an upper pull rod hinged to the first crank arm and a lower pull rod hinged to the pull plate, the upper pull rod and the lower pull rod are connected through an adjusting screw sleeve, and the distance between the upper pull rod and the lower pull rod can be adjusted by rotating the adjusting screw sleeve.
3. The ground-engaging auxiliary blade device according to claim 1 or 2, wherein the slide groove is a straight groove.
4. The ground-engaging auxiliary knife device according to claim 3, wherein the chute is arranged in a vertical direction.
5. The ground auxiliary knife device according to claim 1, wherein the first fitting hole is a hexagonal hole, and the main shaft is a hexagonal prism shape fitted with the hexagonal hole.
6. The ground auxiliary knife device of claim 1, wherein the mounting shaft is a square shaft, and the second fitting hole is shaped to match a cross-sectional shape of the mounting shaft.
7. The ground auxiliary knife device according to claim 1, wherein the ground moving contact is plural, and each of the ground moving contacts is arranged in sequence along the mounting shaft.
8. The ground knife assembly of claim 1 wherein the mounting shaft is removably mounted to the ground switch bracket by a trip lever.
9. The auxiliary grounding knife device according to claim 1, wherein the main shaft sequentially reaches a closing angle of the load switch, a breaking angle of the load switch, and a grounding closing angle of the load switch when rotating in a preset direction; or the main shaft sequentially reaches the opening angle of the load switch, the closing angle of the load switch and the grounding closing angle of the load switch when rotating along the preset direction.
10. A combined electrical cabinet comprising a grounding auxiliary knife device, wherein the grounding auxiliary knife device is the grounding auxiliary knife device of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220708868.7U CN216957860U (en) | 2022-03-29 | 2022-03-29 | Combined electrical cabinet and grounding auxiliary knife device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220708868.7U CN216957860U (en) | 2022-03-29 | 2022-03-29 | Combined electrical cabinet and grounding auxiliary knife device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216957860U true CN216957860U (en) | 2022-07-12 |
Family
ID=82298142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220708868.7U Active CN216957860U (en) | 2022-03-29 | 2022-03-29 | Combined electrical cabinet and grounding auxiliary knife device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216957860U (en) |
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2022
- 2022-03-29 CN CN202220708868.7U patent/CN216957860U/en active Active
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