Crank assembly

Abstract

The utility model discloses a crank assembly, which belongs to the technical field of high-voltage power distribution cabinet trolleys and comprises a crank body, a rotary supporting structure and a radial limiting structure, and the crank body comprises a Z-shaped output rod, a connecting rod and a force applying rod which are sequentially connected end to end; the output rod is rotationally connected to the rotary supporting structure; the radial limiting structure comprises an extension rod and a clamping piece connected to the extension rod, the extension rod is fixedly connected to the rotary supporting structure, and the clamping piece is used for being placed on one side of a cabinet body. According to the utility model, the rotary supporting structure and the radial limiting structure are additionally arranged on the crank body, and the radial position of the crank body can be limited by utilizing the radial limiting structure, so that the radial shaking of the crank body during rotation is limited, and the problems of abrasion and deformation of the high-voltage power distribution cabinet are reduced or eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -voltage distribution cabinet trolley technical field especially relates to a crank handle subassembly. BACKGROUND

[0002] In the power system, high -voltage distribution cabinet as the key equipment, bears the important task of distribution, control and protection electric energy. However, in the actual operation process, the high -voltage distribution cabinet some components, especially the cabinet front grating door and trolley's quadrilateral pin, often face serious wear and tear problem. Although these high -voltage distribution cabinet in maintenance and repair process are all strictly in accordance with the regulation and technical standard execution, and the equipment is always in normal state in the operation process, but wear and tear problem still frequently appears.

[0003] Wear and tear problem mainly concentrates on the cabinet front grating door and trolley's quadrilateral pin. These components in the frequent operation process, due to long -term physical friction and stress effect, gradually appear wear and tear, and wear and tear degree is increasingly serious. This wear and tear not only influences the normal commissioning of trolley and the exit work state, reduces its service life, also leads to equipment operation rate to drop, increases the labor intensity and workload of worker. More serious is, this wear and tear phenomenon brings great hidden danger for the stable operation of equipment, and once fault occurs, can cause serious electric power accident.

[0004] At present, although there are various high -voltage distribution cabinet and its related components maintenance and maintenance method on the market, but the solution to quadrilateral pin and grating door wear and tear problem is not perfect. Traditional maintenance method can only temporarily alleviate wear and tear problem, cannot fundamentally solve its root cause. Therefore, how to reduce or eliminate the wear and tear and deformation problem of high -voltage distribution cabinet becomes the technical problem to be solved urgently at present. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a crank handle subassembly to solve the above-mentioned prior art problems, by adding rotary support structure and radial limit structure on the crank handle body, the radial position of the crank handle body can be limited by the radial limit structure, so as to limit the radial swing of the crank handle body when rotating, reduce or eliminate the wear and tear and deformation problem of high -voltage distribution cabinet.

[0006] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0007] The utility model provides a kind of crank handle assembly, including crank handle body, rotating support structure and radial limiting structure, the crank handle body includes output rod, connecting rod and force bar sequentially connected in head-tail Z type;The output rod is rotatably connected in the rotating support structure;The radial limiting structure includes extension bar and the clamping piece connected to the extension bar, the extension bar is fixedly connected to the rotating support structure, and the clamping piece is used to place in the side of cabinet body.

[0008] In an embodiment, the extension bar adopts a basket bolt, the first end of the basket bolt is connected to the rotating support structure, and the second end of the basket bolt is connected to the clamping piece.

[0009] In an embodiment, the clamping piece includes a first nut and a first bolt, the first nut is connected to the second end of the basket bolt, the axial direction of the first nut is parallel to the axial direction of the output rod, and the first bolt is threadedly connected to the first nut.

[0010] In an embodiment, a handle is further included, the handle is rotatably connected to the force bar, and the force bar is provided with a clamping spring for limiting the axial position of the handle.

[0011] In an embodiment, the rotating support structure adopts a bearing, the inner ring of the bearing is sleeved on the output rod, and the outer ring of the bearing is connected to the extension bar.

[0012] In an embodiment, an axial limiting structure is further included, the axial limiting structure includes an ear plate and an abutting piece, the ear plate is fixedly connected to the rotating support structure, the abutting piece is connected to the ear plate, and the end of the abutting piece is used for abutting to the cabinet door.

[0013] In an embodiment, the abutting piece includes a second bolt and a top plate connected to the second bolt, the top plate is used for abutting to the cabinet door, the ear plate is provided with a second nut, and the second bolt is threadedly connected to the second nut.

[0014] In an embodiment, the abutting piece further includes a permanent magnet, the permanent magnet is fixedly connected to the top plate, and the permanent magnet is used for being adsorbed to the cabinet door.

[0015] In an embodiment, the ear plate and the extension bar are cross-distributed.

[0016] In an embodiment, an inner hexagonal sleeve is connected to the output end of the output rod.

[0017] The utility model has achieved the following technical effects compared with the prior art:

[0018] The utility model discloses a rotatory support structure and radial limit structure are added on the handle body, and the rotatory support structure is used for supporting the rotation of handle body, and the radial limit structure is used for limiting the radial position of handle body, thereby increasing the support point of handle body, changing the disadvantage that the top end of handle body is inserted into the clevis pin as the only support point, when handle body rotates, the radial swing of handle body can be limited, the friction caused by the unstable center of handle body is avoided, and the wear and deformation of high-voltage distribution cabinet are reduced or eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiments, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0020] Figure 1 It is the whole structure schematic diagram of handle assembly in the embodiment of the utility model;

[0021] Figure 2 It is Figure 1 The front view of handle assembly;

[0022] Figure 3 It is Figure 1 The side view of handle assembly;

[0023] Figure 4 It is Figure 1 The top view of handle assembly;

[0024] Figure 5 It is the schematic diagram of handle body in the embodiment of the utility model;

[0025] Figure 6 It is the schematic diagram of radial limit structure in the embodiment of the utility model;

[0026] Figure 7 It is the schematic diagram of axial limit structure in the embodiment of the utility model;

[0027] Wherein, 1, handle body;2, rotatory support structure;3, radial limit structure;4, axial limit structure;5, handle;

[0028] 11, output rod;12, connecting rod;13, force rod;14, internal hex sleeve;

[0029] 31, extension rod;32, clamping piece;321, first nut;322, first bolt;

[0030] 41, ear plate; 42, abutting member; 421, permanent magnet; 422, top plate; 423, second nut; 424, second bolt. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] The utility model discloses a kind of rocking handle assemblies, to solve the problems existing in prior art, by additionally setting rotary support structure and radial limit structure on rocking handle body, the radial position of rocking handle body can be limited using radial limit structure, so as to limit the radial swing of rocking handle body when rotating, reduce or eliminate the wear and deformation problem of high-voltage distribution cabinet.

[0033] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent and easy to understand, the utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0034] As Figures 1 to 7As shown, the utility model provides a kind of crank handle assembly, including crank handle body 1, rotating support structure 2 and radial limiting structure 3, crank handle body 1 includes output rod 11, connecting rod 12 and force rod 13 sequentially connected in Z type, output rod 11 is used to connect to the component driven, after holding force rod 13 with hand, it can be shaken with output rod 11 as center, and then torque is transmitted to the driven component such as high-voltage switchgear's bayonet lock by output rod 11.Output rod 11 is rotatably connected to rotating support structure 2, rotating support structure 2 can adopt bearing or support ring structure, to be able to support the rotation of crank handle body 1.Radial limiting structure 3 includes extension rod 31 and the clamping piece 32 connected to extension rod 31, extension rod 31 is fixedly connected to rotating support structure 2, during work, clamping piece 32 is placed in the side of cabinet, to limit clamping piece 32 using the side or side wall of cabinet, then the position of rotating support structure 2 is limited by extension rod 31, the radial position of output rod 11 is limited by the position of rotating support structure 2, finally the relative position of output rod 11 and the driven component such as bayonet lock is kept stable.Radial limiting structure 3 is provided with at least one group, can be provided with two groups, can be provided with three groups or more than three groups, when being provided with one group, only clamping piece 32 is provided on the side of cabinet, at this time, clamping piece 32 is only supported on the side of cabinet, when being provided with two groups or more than two groups, clamping piece 32 can be distributed to the two sides of cabinet, at this time, when crank handle body 1 rotates left or right, clamping piece 32 can be supported on the two sides of cabinet, provide an auxiliary tension for left and right rotation operation, prevent the crank handle body 1 from falling off.

[0035] The utility model adds rotating support structure 2 and radial limiting structure 3 on crank handle body 1, uses rotating support structure 2 to support the rotation of crank handle body 1, and uses radial limiting structure 3 to limit the radial position of crank handle body 1, thereby increasing the support point of crank handle body 1, changes the disadvantage that the top end of crank handle body 1 is inserted into bayonet lock as the only support point, can limit the radial shaking of crank handle body 1 when rotating, avoids the friction caused by the unstable center of crank handle body 1, and further reduces or eliminates the wear and deformation problem of high-voltage switchgear.

[0036] In an embodiment, as shown, Figure 6 The extension rod 31 adopts a basket bolt, the first end of the basket bolt is connected to the rotating support structure 2, and the second end of the basket bolt is connected to the clamping piece 32. When the middle part of the basket bolt is twisted, the distance between the first end and the second end can be adjusted, and the distance of the clamping piece 32 relative to the rotating support structure 2 is adjusted, so that the crank handle assembly can be suitable for cabinets of various widths. In addition, the distance between the clamping pieces 32 on both sides of the cabinet can also be shortened, and the clamping pieces 32 are used to fix the crank handle assembly on the cabinet.

[0037] In an embodiment, the clamping member 32 comprises a first nut 321 and a first bolt 322. The first nut 321 is connected to the second end of the basket bolt. When connected, the surface on the outer diameter side of the first nut 321 is welded to the end face of the second end of the basket bolt. By rotating the second end, the axial direction of the connected first nut 321 can be parallel to the axial direction of the output rod 11. The first bolt 322 is threadedly connected to the first nut 321. At this time, the axial direction of the first bolt 322 is parallel to the axial direction of the output rod 11. When the first bolt 322 is screwed, the first bolt 322 can be clamped on one side of the cabinet body.

[0038] In an embodiment, as shown in Figure 1 The handle 5 is cylindrical and has an inner diameter greater than the diameter of the force rod 13. The handle 5 is sleeved on the force rod 13, so that the handle 5 can rotate relative to the force rod 13. When holding the handle 5, the handle body 1 can be easily and conveniently shaken. The force rod 13 is provided with a clamping spring for limiting the axial position of the handle 5. The clamping spring can be arranged only at one end of the handle 5 away from the connecting rod 12. The clamping spring prevents the handle 5 from being separated from the force rod 13, and the other end of the handle 5 is limited by the connecting rod 12. Of course, the handle 5 can also be provided with a clamping spring or other limiting structure at both ends, so as to limit the handle 5 within a more reasonable axial range.

[0039] In an embodiment, the rotating support structure 2 adopts a bearing. The inner ring of the bearing is sleeved on the output rod 11 and connected by interference fit or welding. The outer ring of the bearing is connected to the extension rod 31. When the handle body 1 rotates, the radial limiting structure 3 does not rotate, and the radial limiting structure 3 can provide radial support for the output rod 11 without affecting the rotation of the handle body 1.

[0040] In an embodiment, as shown in Figure 7 The axial limiting structure 4 comprises an ear plate 41 and an abutting member 42. The ear plate 41 is fixedly connected to the rotating support structure 2. When the rotating support structure 2 adopts a bearing, the ear plate 41 is connected to the outer ring of the bearing. The abutting member 42 is connected to the ear plate 41. Under the support of the ear plate 41, the end of the abutting member 42 abuts against the cabinet door. Thus, the abutting member 42 is located between the cabinet door and the ear plate 41. The spacing between the ear plate 41 and the cabinet door can be limited by the abutting member 42, so as to control the depth of the end of the output rod 11 into the clamping groove.

[0041] In an embodiment, as shown in Figure 7As shown, the abutment member 42 includes a second bolt 424 and a top plate 422 connected to the second bolt 424. The top plate 422 is used to abut against the cabinet door. The ear plate 41 is provided with a second nut 423, and the second bolt 424 is threadedly connected to the second nut 423. By turning the second bolt 424, the distance between the top plate 422 and the ear plate 41 can be adjusted, thereby facilitating the adjustment of the support range of the axial limiting structure 4.

[0042] In one implementation, such as Figure 7 As shown, the abutment member 42 also includes a permanent magnet 421, which is fixedly connected to the top plate 422. Tightening the second bolt 424 allows the permanent magnet 421 to move relative to the ear plate 41. The permanent magnet 421 is used to adhere to the cabinet door, and after determining the distance between the permanent magnet 421 and the ear plate 41, it can be used for magnetic fixation. The permanent magnet 421 can be a rectangular magnet, which has a larger contact area with the cabinet door, allowing for more effective fixation.

[0043] In one embodiment, combined with Figure 2 As shown, the ear plate 41 and the extension rod 31 are arranged in a cross shape, that is, there is a pair of ear plates 41 in opposite directions and a pair of extension rods 31 in opposite directions. While effectively limiting the radial direction of the output rod 11, it can also effectively limit the axial direction of the output rod 11.

[0044] In one embodiment, the output end of the output rod 11 is connected to an internal hexagonal sleeve 14, which can be used to rotate the hexagonal locking pin clockwise or counterclockwise.

[0045] In one embodiment, the method of implementing this utility model is as follows:

[0046] Install the crank assembly on the high-voltage cabinet door. Insert the inner hexagonal sleeve 14 of the crank body 1 into the slot, adjust the length of the turnbuckle (extension rod 31 of the radial limiting structure 3), and tighten it. Rotate the second bolt 424 to adjust the position of the permanent magnet 421, so that the permanent magnet 421 is attracted to the cabinet door. Rotate the first bolts 322 at both ends of the turnbuckle, so that the first bolts 322 are embedded in both sides of the cabinet door. During operation, the permanent magnet 421 is attracted to the cabinet door, which can maintain the insertion depth of the inner hexagonal sleeve 14 and prevent it from falling off. After the first bolts 322 at the top of the turnbuckles on both sides are embedded in the cabinet doors on both sides, the length of the turnbuckle is locked. With the support of the bearing, rotate the crank body 1. Rotate to the left "on" position, the left turnbuckle is tightened with the cabinet door to provide an auxiliary pulling force; rotate to the right "off" position, the right turnbuckle is tightened with the cabinet door to provide an auxiliary pulling force, preventing the telescopic crank body 1 from falling off and providing stable support for the operation of the crank body 1.

[0047] In one embodiment, the present invention provides the following application examples:

[0048] The handle body 1 and the handle 5: select M17 inner hex sleeve 14, length is 40mm;The output rod 11 adopts M15 steel bar, length 150mm;Weld the inner ring of bearing (type 6203) at the distance of 50mm from the inner hex sleeve 14;The connecting rod 12 adopts M15 steel bar, length 240mm;The force rod 13 adopts M15 steel bar, length 140mm;The inner hex sleeve 14, the output rod 11, the connecting rod 12 and the force rod 13 are sequentially welded in sequence, and the force rod 13 is in the same direction with the inner hex sleeve 14.In the tail, a diameter of 15.5mm, length 100mm hollow nylon handle 5 is made, a snap spring is used to fix front and back, so that the handle 5 can rotate with the movement direction.

[0049] The axial limiting structure 4: two arc-shaped ear plates 41 with a length of 50mm are welded on both sides of the outer ring of the bearing, and a through hole with a diameter of 13mm is opened at the center of the arc, an M10 second nut 423 is welded coaxially with the through hole, an iron sheet with a length of 50mm and a width of 20mm is selected as a top plate 422, M5 holes are opened on both sides of the top plate 422 and an M5 flat head screw is used to fix a permanent magnet 421 with a length of 50mm and a width of 20mm.The M10 bolt, the second bolt 424 with a length of 100mm, is connected to the top plate 422 through the second nut 423.

[0050] The radial limiting structure 3: select two M12 telescopic stainless steel basket bolts as extension rods 31, the closed length is 200mm, and the unfolded length is 370mm.The head end of the basket bolt is welded to the outer ring of the bearing, the tail end of the basket bolt is welded as a first nut 321 with M10 nut, and M10 bolt, first bolt 322 with a length of 120mm is matched.

[0051] The specific examples in the utility model are applied to the principles and implementation modes of the utility model, and the above embodiment is only used to help understand the method and core idea of the utility model;At the same time, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will be changed.The above description should not be understood as the limitation of the utility model.

Claims

1. A crank handle assembly, characterized in that, include: The crank handle body includes an output rod, a connecting rod, and a force-applying rod connected in a Z-shape from end to end; A rotating support structure, wherein the output rod is rotatably connected to the rotating support structure; The system also includes a radial limiting structure, which comprises an extension rod and a snap-fit ​​component connected to the extension rod. The extension rod is fixedly connected to the rotating support structure, and the snap-fit ​​component is used to be placed on one side of the cabinet.

2. The crank assembly according to claim 1, characterized in that: The extension rod is made of turnbuckle, with the first end of the turnbuckle connected to the rotating support structure and the second end of the turnbuckle connected to the snap-fit ​​component.

3. The crank assembly according to claim 2, characterized in that: The snap-fit ​​component includes a first nut and a first bolt. The first nut is connected to the second end of the turnbuckle. The axial direction of the first nut is parallel to the axial direction of the output rod. The first bolt is threadedly connected to the first nut.

4. The crank assembly according to claim 1, characterized in that: It also includes a grip, which is rotatably connected to the force-applying rod, and the force-applying rod is provided with a retaining spring for limiting the axial position of the grip.

5. The crank assembly according to claim 1, characterized in that: The rotating support structure uses a bearing, with the inner ring of the bearing fitted onto the output rod and the outer ring of the bearing connected to the extension rod.

6. The crank assembly according to any one of claims 1-5, characterized in that: It also includes an axial limiting structure, which includes an ear plate and an abutment. The ear plate is fixedly connected to the rotating support structure, and the abutment is connected to the ear plate. The end of the abutment is used to abut against the cabinet door.

7. The crank assembly according to claim 6, characterized in that: The abutment includes a second bolt and a top plate connected to the second bolt. The top plate is used to abut against the cabinet door. The ear plate is provided with a second nut, and the second bolt is threadedly connected to the second nut.

8. The crank assembly according to claim 7, characterized in that: The abutment also includes a permanent magnet, which is fixedly connected to the top plate and is used to attract the cabinet door.

9. The crank assembly according to claim 6, characterized in that: The ear plate and the extension rod are arranged in a cross shape.

10. The crank assembly according to claim 1, characterized in that: The output end of the output rod is connected to an internal hexagonal sleeve.

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