Switching auxiliary device
By designing a reverse switch auxiliary device, using the combination of angle and reverse switch hook, the safety hazards of operators facing high-voltage fuses during box transformer turnover operation are solved, and the safety is greatly improved.
Patent Information
- Application Number
- CN202420567433.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-22
AI Technical Summary
During the shutdown operation of box transformer, the operator needs to face the load switch and high-voltage fuse directly, which poses great safety hazards, especially when the high-voltage fuse sprays free gas in a short circuit situation, which may threaten the operator. Life is safe.
A reverse switch assist device is designed, including a first rod body and a second rod body connected to each other, forming an angle greater than or equal to 90°, and a reverse switch hook is provided at one end of the first rod body away from the second rod body, allowing the operator to stand at the The reverse hook is inserted into the handle operation hole of the load switch on the side of the operating room door to complete the reverse operation to avoid facing the load switch and high-voltage fuse on the front.
Through this design, the operator can complete the shutdown operation without facing the load switch and high-voltage fuse, which significantly improves the safety of the shutdown operation of the box transformer and avoids the damage to personnel when the high-voltage fuse is sprayed.
Smart Images
Figure CN222213972U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electric power equipment, and in particular to a switching auxiliary device. Background Art
[0002] With the continuous advancement of new energy development, the installed scale of box-type transformers is also expanding. Box-type transformers are a type of movable transformer that integrates traditional transformers into a box-type housing. It is mainly composed of a transformer, a high-voltage voltage control device, and a low-voltage voltage control device.
[0003] Among them, the high-voltage voltage control equipment of the box-type transformer includes devices such as load switches and high-voltage fuses. The load switch is an operating electrical appliance with a simple arc extinguishing device. It can cut off the rated load current and a certain overload current, but cannot cut off the short-circuit current. As a protective electrical appliance, the high-voltage fuse can disconnect the short-circuit current. The load switch and the high-voltage fuse in the box-type transformer are connected in series, which enables the box-type transformer to have the function of disconnecting the normal working current, overload current and short-circuit current. That is, during the use of the box-type transformer, the normal working current and overload current (also known as switching operation) can be disconnected by switching the state of the load switch, and when a short-circuit current occurs, the high-voltage fuse will be ejected to protect the electrical equipment.
[0004] At present, the staff completes the switching operation through an insulating straight rod, and the load switch and high-voltage fuse of the box-type transformer need to be connected in series. During installation, the two are generally set together in an upper and lower relationship. This requires the operator to face the load switch and the high-voltage fuse directly when using the insulating rod for switching operations. At this time, if a short circuit occurs, the high-voltage fuse will spray a large amount of free gas, which will threaten the life safety of the operator and pose a great safety hazard. Utility Model Content
[0005] The present application provides a switching auxiliary device to solve the problem that when performing a switching operation on a box-type transformer, it is necessary to directly face the load switch and the high-voltage fuse, which poses a great safety hazard.
[0006] In order to solve the above problems, this application adopts the following technical solutions:
[0007] The present application provides a brake assist device, comprising a first rod body and a second rod body connected to each other, wherein a first angle is formed between the first rod body and the second rod body, the first angle is greater than or equal to 90°, and a brake hook is provided at one end of the first rod body away from the second rod body.
[0008] In some possible designs, the first rod body is perpendicular to the second rod body.
[0009] In some possible designs, the length of the second rod is greater than or equal to 50 cm.
[0010] In some possible designs, a third rod is disposed at one end of the second rod away from the first rod, a second angle is formed between the third rod and the second rod, the third rod and the first rod are parallel to each other, and a sheath is disposed on the third rod.
[0011] In some possible designs, a connecting member is further included, and the first rod body and the second rod body are connected by the connecting member, so that the size of the first angle can be changed by the connecting member.
[0012] In some possible designs, a connecting head is provided at one end of the first rod body, two connecting protrusions are provided side by side at one end of the second rod body, and the two connecting protrusions are respectively provided on both sides of the connecting head, a first through hole is provided on the connecting head, and a second through hole and a third through hole matching the first through hole are respectively provided on the two connecting heads;
[0013] The connecting member includes a connecting rod and at least one limiting sleeve, the connecting rod includes a coaxially arranged polygonal column segment and a cylindrical segment, one end of the polygonal column segment is connected to one end of the cylindrical segment, the cross-sectional size of the polygonal column segment is larger than that of the cylindrical segment, at least one of the second through hole and the third through hole cooperates with the polygonal column segment, the first through hole also cooperates with the polygonal column segment, one end of the cylindrical segment extends to the side of the connecting protrusion away from the connecting head and cooperates with the limiting sleeve, so as to limit the relative position of the first rod body and the second rod body through the limiting sleeve.
[0014] In some possible designs, the cylindrical section is threadedly connected to the limiting sleeve.
[0015] In some possible designs, two of the cylindrical section and two of the limiting sleeve are provided, and the cylindrical section is provided at both ends of the polygonal column section.
[0016] In some possible designs, only one of the cylindrical section and the limit sleeve is provided, the polygonal column section includes a first connecting section and a second connecting section whose sizes decrease successively, the second connecting section is connected to the cylindrical section, the shape of the first connecting section is adapted to the shape of the second through hole, the shape of the second connecting section is adapted to the shape of the first through hole, and a positioning block whose size is larger than the inner diameter of the limit sleeve is provided at the end of the cylindrical section.
[0017] In some possible designs, at least one fourth rod body is further included, one end of the fourth rod body is provided with a threaded end, and the other end is provided with a threaded groove adapted to the threaded end, and the end of the second rod body away from the first rod body is threadedly connected to the threaded end.
[0018] The switching auxiliary device provided by the present application is provided with a first rod body and a second rod body connected to each other, and a first angle is formed between the first rod body and the second rod body, and a switching hook is provided at the end of the first rod body away from the second rod body. When the box-type transformer is switched, due to the first angle between the first rod body and the second rod body, it is only necessary to set a suitable value for the first angle during design, so that the staff can hold the second rod body and insert the switching hook into the handle operating hole of the load switch of the box-type transformer by standing on one side of the operating room door of the box-type transformer to complete the switching operation. During this whole process, the operator only needs to stand on the left or right side of the operating room door, without having to face the load switch and the high-voltage fuse of the box-type transformer directly, which can effectively avoid injuring the operator when the high-voltage fuse is ejected, thereby greatly improving the safety of the switching operation of the box-type transformer. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0020] Figure 1 A schematic structural diagram of a first implementation of a switching auxiliary device provided in an embodiment of the present application;
[0021] Figure 2 A schematic structural diagram of a second implementation of the switching auxiliary device provided in an embodiment of the present application;
[0022] Figure 3 for Figure 2 A schematic structural diagram of a first embodiment of the connecting member;
[0023] Figure 4 for Figure 2 A schematic structural diagram of a second embodiment of the connecting member;
[0024] Figure 5 for Figure 2 Schematic diagram of the structure of the fourth rod in FIG.
[0025] Description of reference numerals:
[0026] 100-first rod body; 110-connecting head;
[0027] 200 - second rod body; 210 - connecting protrusion;
[0028] 300-reverse hook;
[0029] 400-third rod body; 410-sheath;
[0030] 500-connecting piece; 510-polygonal column section; 511-first connecting section; 512-second connecting section; 520-cylindrical section; 521-positioning block; 530-limiting sleeve;
[0031] 600- fourth rod body; 610- threaded end; 620- threaded groove.
[0032] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.
[0034] Secondly, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.
[0035] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0036] With the continuous advancement of new energy development, the installed scale of box-type transformers is also expanding. Box-type transformers are a type of movable transformer that integrates traditional transformers into a box-type housing. It is mainly composed of a transformer, a high-voltage voltage control device, and a low-voltage voltage control device.
[0037] Among them, the box-type transformer needs to be switched when switching states. At present, the staff generally completes the switching operation through a straight insulating rod.
[0038] The load switch and high-voltage fuse of the box-type transformer are generally arranged in an upper and lower relationship. This requires the operator to face the load switch and the high-voltage fuse directly when using the insulating rod to perform switching operations. If an accident occurs at this time, the high-voltage fuse will spray out, posing a threat to the life safety of the operator, posing a huge safety hazard.
[0039] In order to avoid the above problems, the present application provides a switching auxiliary device, which allows the operator to complete the switching operation of the box-type transformer without having to face the load switch and high-voltage fuse directly, thereby effectively eliminating the safety hazards brought by the traditional switching method.
[0040] The present application is described in detail below with reference to the accompanying drawings and specific embodiments:
[0041] See also Figure 1 As shown, this embodiment uses a switching auxiliary device, including a first rod body 100 and a second rod body 200 connected to each other, and a switching hook 300 is provided at one end of the first rod body 100 away from the second rod body 200, so that the handle operating hole of the load switch of the box-type transformer can be pulled by the switching hook 300, and a first angle α is provided between the first rod body 100 and the second rod body 200, and α is greater than or equal to 90°, so that when performing a switching operation, the operator can stand on the side of the operating room door and extend the switching hook 300 into the handle operating hole of the load switch without facing the high-voltage fuse and the load switch head-on.
[0042] The first rod body 100 and the second rod body 200 may be made of common insulating materials, such as polyethylene, fiberglass, etc. As long as they have a certain hardness, can meet the switching requirements, and have an insulating effect, this embodiment is not limited here.
[0043] The value of the first angle can be selected according to actual conditions, such as 90°, 120°, etc., so as to facilitate the operator to operate while standing on the side of the operating room door. Of course, it is found through use that under normal circumstances, it is more comfortable to use when the first angle is 90°, that is, the first rod body 100 and the second rod body 200 are perpendicular.
[0044] Specifically, when using the switching auxiliary device of this embodiment to perform switching operations on the box-type transformer, the staff can directly stand on the side of the operating room door of the box-type transformer, hold the second rod body 200 to insert the switching hook 300 into the handle operating hole of the load switch of the box-type transformer, and pull the second rod body 200 to complete the switching operation. During this whole process, the operator does not need to face the load switch and high-voltage fuse of the box-type transformer directly, which can effectively avoid injuring the operator when the high-voltage fuse is ejected, thereby greatly improving the safety of the switching operation of the box-type transformer.
[0045] In some possible implementations, the length of the second rod body 200 is greater than or equal to 50 cm.
[0046] Specifically, the width of the operating room door of most box-type transformers is about 50 cm. Setting the second rod body 200 to be slightly longer can ensure that the operator avoids the operating room door, thereby improving safety.
[0047] For example, the first angle may be 90°, and the length of the second rod body 200 may be 50 cm or 70 cm.
[0048] Of course, it is understandable that this is just an example for illustration, and does not limit the length of the second rod body 200. In actual use, the length of the second rod body 200 can be adjusted according to the value of the first angle and the actual situation of the box-type transformer.
[0049] In some possible implementations, a third rod 400 is provided at one end of the second rod 200 away from the first rod 100, a second angle β is formed between the third rod 400 and the second rod 200, and the third rod 400 and the first rod 100 are parallel to each other, that is, in order to facilitate the switching operation, the first rod 100 is generally extended in the vertical direction, and when performing the switching operation, the third rod 400 is mainly pulled in the vertical direction. Here, the third rod 400 is also extended in the vertical direction, which can facilitate the staff to hold the third rod 400 and apply force to perform the switching operation. At the same time, a sheath 410 can be provided on the third rod 400, such as an insulating rubber sheath, which can prevent slipping, facilitate holding, and improve the comfort of holding.
[0050] At present, the general transformer is set slightly higher. In order to make the switching auxiliary tool adapt to ordinary transformers and improve its application range, please refer to Figure 2 As shown, in this embodiment, the brake assist tool further includes a connecting member 500, and the first rod body 100 and the second rod body 200 are connected by the connecting member 500, so as to change the relative position of the first rod body 100 and the second rod body 200 through the connecting member 500, that is, change the value of the first angle.
[0051] Such a setting, on the one hand, can adaptively adjust the value of the first angle according to the usage habits of different operators to facilitate their operation; on the other hand, when operating an ordinary transformer, the first rod body 100 and the second rod body 200 can also be coaxially arranged, that is, the value of the first angle becomes 180°, thereby extending the overall length of the device and making the device suitable for ordinary transformer switching operations.
[0052] For some possible implementations, see Figure 5 As shown, the brake assist device further includes at least one fourth rod body 600 , wherein a threaded end 610 is disposed at one end of the fourth rod body 600 , and a threaded groove 620 adapted to the threaded end 610 is disposed at the other end.
[0053] For example, when two fourth rods 600 are provided, the threaded end 610 of the rear fourth rod 600 can be screwed into the threaded groove 620 of the front fourth rod 600, and the two can be connected as one through threaded connection.
[0054] In addition, the same thread groove 620 is also provided at the end of the second rod body 200 away from the first rod body 100, so that the threaded end 610 of the fourth rod body 600 can be directly connected to the end of the second rod body 200 away from the first rod body 100 in a threaded connection manner, so that when operating a higher transformer, the first angle can be directly changed to 180°, and then according to the height requirements, an appropriate number of fourth rod bodies 600 can be selected to be added, thereby effectively improving the adaptability of the switching auxiliary device in different usage scenarios.
[0055] For some possible implementations, see Figure 3 and Figure 4 As shown, a connector 110 is provided at one end of the first rod body 100, and two connecting protrusions 210 are provided at one end of the second rod body 200. When the first rod body 100 and the second rod body 200 are connected, the connector 110 is located between the two connecting protrusions 210. A first through hole is also provided on the connector 110, and a second through hole is provided on one of the two connecting protrusions 210, and a third through hole is provided on the other connecting protrusion 210. The first through hole, the second through hole, and the third through hole are arranged oppositely, that is, when the connector 110 is inserted between the two connecting protrusions 210, the first through hole, the second through hole, and the third through hole are just opposite to each other, so that the first rod body 100 and the second rod body 200 are connected through the connector 110 and the connecting protrusion 210.
[0056] The connecting member 500 includes a connecting rod and at least one limiting sleeve 530, and the connecting rod includes a polygonal column section 510 and at least one cylindrical section 520, wherein one end of the polygonal column section 510 and one end of the cylindrical section 520 are connected to each other, and the two are coaxially arranged, and the cross-sectional size of the polygonal column section 510 is larger than the size of the cylindrical section 520, that is, the cylindrical section 520 can be inscribed in the polygonal column section 510, and the cross-sectional area of the cylindrical section 520 is even smaller, and the limiting block is connected to the end of the polygonal column section 510 At least one of the second through hole and the third through hole cooperates with the polygonal column segment 510, and the first through hole also cooperates with the polygonal column segment 510. One end of the cylindrical segment 520 extends to the side of the connecting protrusion 210 away from the connecting head 110 and cooperates with the limiting sleeve 530, so as to limit the relative position of the first rod body 100 and the second rod body 200 through the limiting sleeve 530, that is, the first rod body 100 and the second rod body 200 cannot rotate relative to each other through the limiting sleeve 530, thereby fixing the value of the first angle.
[0057] For example, see Figure 3 As shown, two limiting sleeves 530 are provided, and two cylindrical sections 520 are also provided, and are respectively located at the two ends of the polygonal column section 510, the second through hole cooperates with the polygonal column section 510, and the third through hole cooperates with the cylindrical section 520. At this time, if it is necessary to connect the first rod body 100 and the second rod body 200, the connecting head 110 is directly inserted between the two connecting protrusions 210, and the relative position of the first rod body 100 and the second rod body 200 is adjusted, that is, the value of the first angle is determined, and then the cylindrical section 520 is aligned with the second through hole, so that it passes through the second through hole and the first through hole in sequence and extends to the outside of the third through hole, and then the first rod body 100 and the second rod body 200 are locked by the limiting sleeve 530.
[0058] It can be understood that since the first through hole and the second through hole are both polygonal holes and they cooperate with the polygonal cylinder, after the limit sleeve 530 presses against the connecting protrusion 210 from both sides, the connecting rod can no longer rotate relative to the first through hole, the second through hole, and the third through hole, so that the value of the first angle cannot be changed.
[0059] When the value of the first angle needs to be changed to adapt to different usage scenarios, it is only necessary to move the limit sleeve 530 in a direction away from the connecting protrusion 210, and then pull the connecting rod to make the polygonal column segment 510 completely disengage from the first through hole to rotate the first rod body 100. After the adjustment is completed, the limit strip can be reinstalled according to the above steps, which is extremely convenient to use.
[0060] Exemplarily, the first through hole and the second through hole may also be polygonal holes, which are both adapted to the shape of the polygonal column segment 510 , so that the relative position of the first rod body 100 and the second rod body 200 can be effectively limited.
[0061] It is found during use that when the first angle is 90°, it is more convenient to perform switching operations on the box-type transformer, and when the first angle is 180°, it is more convenient to operate an ordinary transformer. Therefore, the cross-section of the polygonal column segment 510 can be selected to be square, so that the rotation angle can be better determined, and the first angle can be quickly adjusted to these two values, which is more convenient to use.
[0062] In some possible implementations, the cylindrical section 520 is threadedly connected to the limiting sleeve 530 , and when in use, the relative position of the limiting sleeve 530 and the cylindrical section 520 can be changed by simply twisting the limiting sleeve 530 , thereby facilitating locking or adjusting the first angle.
[0063] For some possible implementations, see Figure 4 As shown, only one limiting sleeve 530 and one cylindrical section 520 are provided, and the polygonal column section 510 includes a first connecting section 511 and a second connecting section 512 whose sizes decrease successively, the first connecting section 511 and the second connecting section 512 are coaxially arranged, the second connecting section 512 is connected to the cylindrical section 520, the shape of the first connecting section 511 is adapted to the shape of the second through hole, the shape of the second connecting section 512 is adapted to the shape of the first through hole, and a positioning block 521 whose size is larger than the inner diameter of the limiting sleeve 530 is provided at the end of the cylindrical section 520.
[0064] After the connecting piece 500 is connected to the first rod body 100 and the second rod body 200, since the cross-sectional size of the first connecting section 511 is larger than the inner diameter of the first through hole, the end of the first connecting section 511 will be stuck in the first through hole and can no longer move in the direction of the first through hole, and the limiting sleeve 530 is tightened on the cylindrical section 520, so that both ends of the connecting piece 500 can be effectively limited, that is, only one limiting sleeve 530 is needed to complete the position restriction of the first rod body 100 and the second rod body 200. In addition, due to the presence of the positioning block 521 In addition, it can also prevent the limiting sleeve 530 from falling off, avoiding the problem of parts being lost during use. Of course, it can be understood that at this time, the cylindrical section 520 has a certain length. When the value of the first angle needs to be adjusted, the limiting sleeve 530 can be twisted in the direction away from the connecting protrusion 210, and the cylindrical section 520 can be extended into the first through hole. Since the cylindrical section 520 is small in size, it will not affect the rotation of the first rod body 100. After adjusting to the appropriate angle, the connecting member 500 can be pushed and locked using the limiting sleeve 530.
[0065] Those skilled in the art will easily conceive of other implementation schemes of the present application after considering the specification and practicing the technical solutions disclosed herein.
[0066] This application is intended to cover any modifications, uses or adaptive changes of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the technical field that are not disclosed in this application.
[0067] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.
Claims
1. A switching auxiliary device, characterized in that: It comprises a first rod body and a second rod body connected to each other, wherein a first angle is formed between the first rod body and the second rod body, the first angle is greater than or equal to 90 degrees, and a reverse brake hook is arranged at one end of the first rod body away from the second rod body.
2. The switching auxiliary device according to claim 1, characterized in that: The first rod body is perpendicular to the second rod body.
3. The switching auxiliary device according to claim 2, characterized in that: The length of the second rod is greater than or equal to 50 cm.
4. The switching auxiliary device according to claim 1, characterized in that: A third rod is disposed at one end of the second rod away from the first rod, a second angle is formed between the third rod and the second rod, the third rod and the first rod are parallel to each other, and a sheath is disposed on the third rod.
5. The switching auxiliary device according to any one of claims 1 to 3, characterized in that: A connecting member is also included, and the first rod body and the second rod body are connected by the connecting member, so that the size of the first angle can be adjusted by the connecting member.
6. The switching auxiliary device according to claim 5, characterized in that: A connecting head is provided at one end of the first rod body, two connecting protrusions are provided side by side at one end of the second rod body, and the two connecting protrusions are respectively provided on both sides of the connecting head, a first through hole is provided on the connecting head, and a second through hole and a third through hole matching the first through hole are respectively provided on the two connecting heads; The connecting member includes a connecting rod and at least one limiting sleeve, the connecting rod includes a coaxially arranged polygonal column segment and a cylindrical segment, one end of the polygonal column segment is connected to one end of the cylindrical segment, the cross-sectional size of the polygonal column segment is larger than that of the cylindrical segment, at least one of the second through hole and the third through hole cooperates with the polygonal column segment, the first through hole also cooperates with the polygonal column segment, one end of the cylindrical segment extends to the side of the connecting protrusion away from the connecting head and cooperates with the limiting sleeve, so as to limit the relative position of the first rod body and the second rod body through the limiting sleeve.
7. The switching auxiliary device according to claim 6, characterized in that: The cylindrical section is threadedly connected to the limiting sleeve.
8. The switching auxiliary device according to claim 7, characterized in that: The cylindrical section and the limiting sleeve are both provided in two numbers, and the cylindrical section is arranged at two ends of the polygonal column section.
9. The switching auxiliary device according to claim 7, characterized in that: Only one of the cylindrical section and the limiting sleeve is provided, the polygonal column section includes a first connecting section and a second connecting section whose sizes decrease successively, the second connecting section is connected to the cylindrical section, the shape of the first connecting section is adapted to the shape of the second through hole, the shape of the second connecting section is adapted to the shape of the first through hole, and a positioning block whose size is larger than the inner diameter of the limiting sleeve is provided at the end of the cylindrical section.
10. The switching auxiliary device according to claim 9, characterized in that: It also includes at least one fourth rod body, one end of the fourth rod body is provided with a threaded end, and the other end is provided with a threaded groove adapted to the threaded end, and the end of the second rod body away from the first rod body is threadedly connected to the threaded end.