A KYN switch cabinet trolley crank handle

Abstract

The present invention discloses a KYN type switch cabinet trolley crank handle, comprising a rotating handle rod and a sleeve used in conjunction with a screw rod column head in an operating hole of the switch cabinet trolley, the sleeve being installed at one end of the rotating handle rod, the rotating handle rod being a bow-shaped structure, the interior of the sleeve being provided with a multi-faceted inner hole, a strip-shaped through hole communicating with an outer wall of the sleeve being provided on an opposite inner wall of the multi-faceted inner hole, an anti-falling clamping block being rotatably installed in the strip-shaped through hole, the outer wall of the sleeve being provided with a clamping device for driving the anti-falling clamping block to rotate inwardly and clamp the screw rod column head in the operating hole of the switch cabinet trolley; in an embodiment of the present invention, the sleeve is extended into the operating hole corresponding to the switch cabinet trolley so as to engage with the screw rod column head in the operating hole, and then the anti-falling clamping block is pressed by the clamping device to force it to rotate inwardly so as to clamp the screw rod column head, thereby avoiding the problem of the handle falling off caused by the shaking of the sleeve during the rotation of the rotating handle.

Description

Technical Field

[0001] The invention belongs to the technical field of switch cabinet operating devices, and in particular relates to a KYN type switch cabinet trolley crank handle. Background Art

[0002] In the current domestic 10KV power system distribution station, with the increasingly perfect development of vacuum interrupter and vacuum circuit breaker technology, 10KV series vacuum circuit breakers are used more and more in distribution network automation stations. Due to the widespread use of KYN cabinet type medium-voltage equipment used in 3.6~12KV three-phase AC 50Hz single busbar segmentation system of 10KV series trolley-type vacuum circuit breakers, the matching simple-to-operate and easy-to-maintain trolleys are also becoming more and more widely used.

[0003] The trolley switch cabinet includes a cabinet body with a door on the front. All instruments are installed on the inside of the door or in the instrument room. When the door is opened for maintenance, the instruments can be read from the outside. There is lighting inside the cabinet. The oil level of the oil-less circuit breaker or the arc extinguishing chamber of the vacuum circuit breaker can be observed through the observation window on the door. The trolley has three fixed operating positions: operation position, maintenance position and test position. The trolley switch cabinet also has a function to prevent misoperation. When there is misoperation in the electrical circuit, the circuit breaker can automatically open and the grounding knife switch cannot be closed when the circuit breaker is in the closing position t. In order to make the high-current trolley switch cabinet easy to operate, a hand-cranking mechanism is provided on the trolley, which allows the trolley to flexibly enter and exit the switch cabinet.

[0004] The switch cabinet trolley crank handle is responsible for switching the trolley between the "test position" and the "operating position". The suitability of the trolley crank handle is directly related to the efficiency and safety of the trolley operation. At present, most of the substation crank handles are designed in a "Z" shape. During operation, the rotation force point of the crank handle is not coaxial with the force point of the operator. During operation, the trolley crank handle often has problems such as shaking, deflection and tooth slippage, which leads to the occurrence of "handle-off" phenomenon. If this "handle-off" situation occurs when the moving and static contacts of the trolley are just separated or just contacted, it will cause the moving and static contacts to discharge for a long time, greatly reducing the service life of the moving and static contacts. Summary of the invention

[0005] The purpose of the present invention is to provide a KYN type switch cabinet trolley crank handle, inserting a sleeve into the corresponding switch cabinet trolley operating hole, and then pressing the anti-falling clamp block through a clamping device to force it to rotate inward, thereby clamping the screw column head in the switch cabinet trolley operating hole, so as to solve the problem in the prior art that the trolley crank handle is prone to shaking and deflecting, thereby causing the handle to fall off.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A KYN type switch cabinet trolley crank handle comprises a rotating handle rod and a sleeve used in conjunction with a screw column head in an operating hole of the switch cabinet trolley, wherein the sleeve is mounted at one end of the rotating handle rod, the rotating handle rod is a bow-shaped structure, a multi-faceted inner hole is provided inside the sleeve, a strip-shaped through hole connected to an outer wall of the sleeve is provided on an opposite inner wall of the multi-faceted inner hole, an anti-falling clamp is rotatably installed in the strip-shaped through hole, and a clamping device is provided on the outer wall of the sleeve for driving the anti-falling clamp to rotate inward and clamp the screw column head in the operating hole of the switch cabinet trolley.

[0008] As a preferred solution of the present invention, the anti-dropping clamp is a fan-shaped structure, the tip of the anti-dropping clamp is installed on the inner wall of the strip-shaped through hole through a rotating block, and the length of the strip-shaped through hole is greater than the fan-shaped radius length of the anti-dropping clamp.

[0009] As a preferred solution of the present invention, the clamping device includes a fixed sleeve sleeved on the outer wall of the sleeve and a rotating nut for driving the fixed sleeve to move. The outer wall of one end of the sleeve is provided with a thread engaged with the rotating nut. The rotating nut drives the fixed sleeve to move toward the other end of the sleeve and drives the anti-fall-off clamp to rotate inward.

[0010] As a preferred solution of the present invention, one end of the anti-dropping clamp block is further provided with a limiting block to prevent the fixing sleeve from moving too far.

[0011] As a preferred solution of the present invention, each corner of the multi-faceted inner hole is provided with a gap.

[0012] As a preferred solution of the present invention, the rotating handle includes a Z-shaped rod connected to the sleeve and an L-shaped rod detachably connected to the Z-shaped rod, the end of the Z-shaped rod is provided with a polygonal mounting hole, and the end of the L-shaped rod is provided with a polygonal column matching the polygonal mounting hole.

[0013] As a preferred solution of the present invention, the end of the horizontal section where the Z-shaped rod is connected to the sleeve is also provided with a polygonal mounting hole matching the polygonal column.

[0014] As a preferred solution of the present invention, the Z-shaped rod and the L-shaped rod are both provided with rotating handles.

[0015] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0016] The embodiment of the present invention first extends the sleeve into the operating hole corresponding to the switch cabinet trolley, so that the screw column head in the operating hole is engaged with the multi-faceted inner hole of the sleeve, and then the anti-falling clamp is pressed by the clamping device to force it to rotate inward, thereby clamping the screw column head in the operating hole of the switch cabinet trolley, avoiding the problem of the handle falling off due to the shaking of the sleeve during the rotation of the crank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure after the handlebar is rotated to switch the two-hand mode according to an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the sleeve in the embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the anti-falling clamp block in an embodiment of the present invention.

[0023] In the figure:

[0024] 1-sleeve; 2-rotating handle; 3-polygonal inner hole; 4-strip through hole; 5-anti-falling clamp; 6-fixing sleeve; 7-rotating nut;

[0025] 201-Z-shaped rod; 202-L-shaped rod; 203-polygonal mounting hole; 204-polygonal column; 205-rotating handle;

[0026] 301-avoid air;

[0027] 501-rotation block; 502-limiting block. DETAILED DESCRIPTION

[0028] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1 As shown, the present invention provides a KYN type switch cabinet trolley crank handle, including a rotating handle rod 2 and a sleeve 1 used in conjunction with a screw column head in an operating hole of the switch cabinet trolley, wherein the sleeve 1 is installed at one end of the rotating handle rod 2, and is characterized in that the rotating handle rod 2 is a bow-shaped structure, a multi-faceted inner hole 3 is provided inside the sleeve 1, a strip-shaped through hole 4 connected to the outer wall of the sleeve 1 is provided on an opposite inner wall of the multi-faceted inner hole 3, an anti-falling clamp 5 is rotatably installed in the strip through hole 4, and a clamping device for driving the anti-falling clamp 5 to rotate inward and clamp the screw column head in the operating hole of the switch cabinet trolley is provided on the outer wall of the sleeve 1.

[0030] At present, the crank handle of the trolley often has problems such as shaking, deflection and slipping teeth during operation, which leads to the occurrence of "handle-off". If this "handle-off" situation occurs when the moving and static contacts of the trolley are just separated or just contacted, it will cause the moving and static contacts to discharge for a long time, greatly reducing the service life of the moving and static contacts.

[0031] Therefore, one of the characteristics of a KYN type switch cabinet trolley crank handle designed by the present invention is that it can avoid the "handle falling off" phenomenon during the rotation process, and the specific working principle is: first, the sleeve 1 is inserted into the corresponding operating hole of the switch cabinet trolley, so that the screw rod column head in the operating hole is engaged with the multi-faceted inner hole 3 of the sleeve 1, and then the anti-falling clamp 5 is pressed by the clamping device to force it to rotate inward, thereby clamping the screw rod column head in the operating hole of the switch cabinet trolley, avoiding the sleeve 1 from shaking during the rotation of the handle rod 2, thereby avoiding the "handle falling off" problem.

[0032] like Figure 4 As shown, in the above process, the anti-falling clamp 5 is a fan-shaped structure, the tip of the anti-falling clamp 5 is installed on the inner wall of the strip-shaped through hole 4 through the rotating block 501, and the length of the strip-shaped through hole 4 is greater than the fan-shaped radius length of the anti-falling clamp 5.

[0033] The clamping device includes a fixed sleeve 6 sleeved on the outer wall of the sleeve 1 and a rotating nut 7 for driving the fixed sleeve 6 to move. The outer wall of one end of the sleeve 1 is provided with a thread engaged with the rotating nut 7. The rotating nut 7 drives the fixed sleeve 6 to move toward the other end of the sleeve 1 and drives the anti-fall-off clamp 5 to rotate inward by rotation.

[0034] The specific process of realizing that the clamping device drives the anti-falling clamp block 5 to clamp the screw column in the operating hole of the switch cabinet trolley is as follows: first, rotate the rotating nut 7, and the rotating nut 7 rotates and advances along the thread of the outer wall of the sleeve 1. The fixed sleeve 6 is subjected to the external force at one end and moves toward the other end and presses the protruding end of the anti-falling clamp block 5, forcing the anti-falling clamp block 5 to move inward along the rotating block until the protruding end of the anti-falling clamp block 5 is completely rotated and extends into the strip-shaped through hole 4. The fixed sleeve 6 completely covers the strip-shaped through hole 4. At this time, the opposite side of the screw column in the operating hole of the switch cabinet trolley inside the multi-faceted inner hole 3 is subjected to the extrusion force from the anti-falling clamp block 5 to achieve fixation with the anti-falling clamp block 5.

[0035] In order to prevent the fixing sleeve 6 from continuing to move forward after completely covering the sleeve 1 , a limiting block 502 is further provided at one end of the anti-dropping clamp 5 to prevent the fixing sleeve 6 from moving too far.

[0036] like Figure 3 As shown, in order to facilitate the insertion of the sleeve 1 into the switch cabinet trolley operating hole, each corner of the multi-faceted inner hole 3 is provided with a gap 301.

[0037] In addition, the second feature of the present invention is that the handle can be rotated in a variety of ways, specifically:

[0038] The rotating handle 2 includes a Z-shaped rod 201 connected to the sleeve 1 and an L-shaped rod 202 detachably connected to the Z-shaped rod 201 . A polygonal mounting hole 203 is provided at the end of the Z-shaped rod 201 , and a polygonal column 204 matching the polygonal mounting hole 203 is provided at the end of the L-shaped rod 202 .

[0039] The end of the horizontal section where the Z-shaped rod 201 is connected to the sleeve is also provided with a multi-faceted mounting hole 203 matching the multi-faceted column 204. The Z-shaped rod 201 and the L-shaped rod 202 are both sleeved with a rotating handle 205.

[0040] The above-mentioned rotating handle 2 can switch between three modes during use. First, the bow-shaped structure mode. The rotating handle 2 in the embodiment of the present invention is an overall bow-shaped structure. When in use, one hand drives the Z-shaped rod 201 to rotate, and the other hand grasps the L-shaped rod 202, and the force is evenly distributed. At the same time, the horizontal section of the L-shaped rod 202 is coaxial with the sleeve 1, which can be used to support the sleeve 1, further preventing the sleeve 1 from shaking and causing the handle to fall off.

[0041] Secondly, according to personal operating habits, it can also be switched to a traditional Z-shaped structure. When switching, the polygonal column of the L-shaped rod 202 can be directly pulled out from the polygonal mounting hole 203 of the originally fixed Z-shaped rod 201, which is simple and easy to operate.

[0042] Third, if Figure 2As shown, in the two-handed operation mode, when it is difficult to rotate with one hand, the polygonal column of the L-shaped rod 202 can be pulled out from the polygonal mounting hole of the originally fixed Z-shaped rod 201 and inserted into another polygonal mounting hole 203 of the horizontal section where the Z-shaped rod 201 and the sleeve 1 are connected, thereby realizing the double-handle rotation function, which can be operated by one person with both hands or by two people.

[0043] The multi-mode design of the rotating handle 2 is more user-friendly and can meet the operating habits of different people in different occasions. The switching operation is simple and convenient, and is easy to promote and implement.

[0044] Here, technical vocabulary is used only for the purpose of describing specific example embodiments and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" used herein may be intended to include the plural forms as well. The terms "comprises", "comprising", "including", and "having" are inclusive, and thus specify the presence of the claimed features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or additional presence of one or more other features, wholes, steps, operations, elements, components, and / or combinations thereof. Unless the order of execution is explicitly indicated, the method steps, processing, and operations described herein are not interpreted as necessarily needing to be performed in the specific order discussed and shown. It should also be understood that additional or optional steps may be adopted.

[0045] When an element or layer is referred to as being "on ...", "engaged with ...", "connected to" or "coupled to" another element or layer, it may be directly on another element or layer, engaged with another element or layer, connected to or coupled to another element or layer, or there may be an intervening element or layer. In contrast, when an element or layer is referred to as being "directly on ...", "directly engaged with ...", "directly connected to" or "directly coupled to" another element or layer, there may be no intervening element or layer. Other words used to describe element relationships should be interpreted in a similar manner (e.g., "between ..." and "directly between ...", "adjacent" and "directly adjacent", etc.). The term "and / or" used herein includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts are not limited by these terms. These terms may only be used to distinguish one element, component, region or part from another element, component, region or part. Unless clearly indicated by the context, the use of terms such as "first", "second" and other numerical terms herein does not imply sequence or order. Therefore, the first element, component, region, layer or part discussed below can adopt the terminology of the second element, component, region, layer or part without departing from the teaching of the exemplary embodiment.

[0046] Spatially relative terms, such as "inside", "outside", "below", "below...", "lower", "above", "upper", etc., may be used herein for ease of description to describe the relationship between one element or feature and one or more other elements or features as shown in the figure. Spatially relative terms may be meant to include different orientations of the device in addition to the orientation depicted in the figure. For example, if the device in the figure is flipped, the elements described as "below other elements or features" or "below elements or features" will be oriented as "above other elements or features". Therefore, the example term "below..." may include both upward and downward orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations) and interpreted with the spatially relative descriptions herein.

[0047] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A KYN type switch cabinet trolley crank, comprising a rotating handle (2) and a sleeve (1) used in conjunction with a screw column head in an operating hole of the switch cabinet trolley, wherein the sleeve (1) is mounted on one end of the rotating handle (2), and is characterized in that: The rotating handle (2) is of an arched structure, the interior of the sleeve (1) is provided with a multi-faceted inner hole (3), an opposite inner wall of the multi-faceted inner hole (3) is provided with a strip-shaped through hole (4) connected to the outer wall of the sleeve (1), an anti-dropping clamp (5) is rotatably installed in the strip-shaped through hole (4), and the outer wall of the sleeve (1) is provided with a clamping device for driving the anti-dropping clamp (5) to rotate inwardly and clamp the screw column head in the operating hole of the switch cabinet trolley; The anti-dropping clamp (5) is of a fan-shaped structure, the tip of the anti-dropping clamp (5) is mounted on the inner wall of the strip-shaped through hole (4) via a rotating block (501), and the length of the strip-shaped through hole (4) is greater than the fan-shaped radius length of the anti-dropping clamp (5); The rotating handle (2) comprises a Z-shaped rod (201) connected to the sleeve (1) and an L-shaped rod (202) detachably connected to the Z-shaped rod (201); a multi-faceted mounting hole (203) is provided at the end of the Z-shaped rod (201); and a multi-faceted column (204) matching the multi-faceted mounting hole (203) is provided at the end of the L-shaped rod (202); The end of the horizontal section where the Z-shaped rod (201) is connected to the sleeve (1) is also provided with a polygonal mounting hole (203) matching the polygonal column (204).

2. A KYN switch cabinet trolley crank handle according to claim 1, characterized in that: The clamping device comprises a fixed sleeve (6) sleeved on the outer wall of the sleeve (1) and a rotating nut (7) for driving the fixed sleeve (6) to move. The outer wall of one end of the sleeve (1) is provided with a thread engaged with the rotating nut (7). The rotating nut (7) drives the fixed sleeve (6) to move toward the other end of the sleeve (1) and drives the anti-dropping clamp (5) to rotate inwardly.

3. A KYN switch cabinet trolley crank handle according to claim 2, characterized in that: One end of the anti-drop clamp (5) is also provided with a limit block (502) for preventing the fixing sleeve (6) from moving too far.

4. A KYN switch cabinet trolley crank handle according to claim 1, characterized in that: Each corner of the multi-faceted inner hole (3) is provided with a void (301).

5. A KYN switch cabinet trolley crank handle according to claim 1, characterized in that: The Z-shaped rod (201) and the L-shaped rod (202) are both sleeved with a rotating handle (205).

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