CN210265555U - Device for preventing coupling key piece from dropping - Google Patents

Abstract

The utility model discloses a device for preventing a coupling key block from falling, which comprises two arc-shaped clamping plates which are symmetrically arranged up and down, wherein the arc-shaped clamping plates are provided with flange plates at the butt joint part, and the flange plates of the upper arc-shaped clamping plate and the lower arc-shaped clamping plate are fixedly connected through screws and nuts; and limiting edges are arranged on two sides of the arc-shaped clamping plate. The utility model discloses can seal the key piece lock of shaft coupling in the cavity that two arc cardboard enclose to become, even the key piece is not hard up, can not drop yet, bring the time of buffering for staff's the work of patrolling and examining, eliminated the key piece accident and dropped the produced potential safety hazard; and the utility model discloses can directly install under the condition of not disassembling the shaft coupling, great improvement the convenience that uses, be particularly useful for old project transformation.

Description

Device for preventing coupling key piece from dropping

Technical Field

The utility model relates to a shaft coupling protector technical field especially relates to a prevent device that shaft coupling key piece dropped.

Background

The existing coupling for the crown block is shown in figure 1, and comprises a first butt joint shaft 1-1 connected with an output shaft of a motor and a second butt joint shaft 1-2 connected with a power element (such as a travelling wheel), wherein a first butt joint flange 1-3 is arranged on a butt joint surface of the first butt joint shaft 1-1, a second butt joint flange 1-4 is arranged on a butt joint surface of the second butt joint shaft 1-2, the first butt joint flange 1-3 is connected with the second butt joint flange 1-4 through a plurality of screws arranged along the circumferential direction, key grooves are arranged at corresponding positions of the first butt joint flange 1-1 and the second butt joint flange 1-4, key blocks 1-5 are embedded in the key grooves, and the key blocks 1-5 are used for offsetting torsion between the first butt joint shaft 1-1 and the second butt joint shaft 1-2, the method avoids the twist-off of the screw, the key blocks 1-5 are directly hammered into the key slot by a hammer and other tools in an interference fit mode, and the tightening screws 1-6 are utilized for auxiliary fixation, even if the structure is adopted in the working process, the key blocks are easy to loosen, the existing coping method is to enhance the usual inspection to find problems at first time and fasten again, but the method cannot fundamentally solve the potential safety hazard, once the key blocks are separated from the key slot, because the overhead traveling crane is generally more than 20 meters away from the ground, if a worker passes through the overhead traveling crane, the consequences are unreasonable, some manufacturers can directly cancel the key blocks to avoid the situation, but the mode is very easy to twist off the screw to cause production accidents, so how to fundamentally remove the potential safety hazard that the key blocks fall off, the technical problem to be solved by the application is solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to avoid prior art's weak point, provide a device that prevents shaft coupling key piece and drop to effectively solve the weak point that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a device for preventing a coupling key block from falling comprises two arc-shaped clamping plates which are symmetrically arranged up and down, wherein flange plates are arranged at the butt joint positions of the arc-shaped clamping plates, and the flange plates of the upper arc-shaped clamping plate and the lower arc-shaped clamping plate are fixedly connected through screws and nuts;

and limiting edges are arranged on two sides of the arc-shaped clamping plate.

Furthermore, a plurality of limiting edges are arranged at intervals.

Furthermore, the limiting edge is of a continuous structure

Furthermore, the limiting edge and the arc-shaped clamping plate are integrally cast and formed.

Furthermore, the limiting edge is fixed on the arc-shaped clamping plate in a welding mode.

Furthermore, a protruding structure is arranged on the inner side surface of the limiting edge.

Further, the height of the protruding structure is 1-2.5 mm.

Further, the protruding structure is a continuous strip-shaped structure.

Furthermore, the protruding structure is composed of a plurality of point-shaped protrusions arranged at intervals.

Further, the point-shaped bulges are of a hemispherical structure.

The above technical scheme of the utility model following beneficial effect has: the utility model discloses can seal the key piece lock of shaft coupling in the cavity that two arc cardboard enclose to become, even the key piece is not hard up, can not drop yet, bring the time of buffering for staff's the work of patrolling and examining, eliminated the key piece accident and dropped the produced potential safety hazard; and the utility model discloses can directly install under the condition of not disassembling the shaft coupling, great improvement the convenience that uses, be particularly useful for old project transformation.

Drawings

Fig. 1 is a schematic structural diagram of a crown block coupler in the prior art;

fig. 2 is a schematic perspective view of an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is an exploded view of an embodiment of the present invention;

FIG. 5 is a diagram illustrating a usage status of the embodiment of the present invention;

fig. 6 is a schematic structural view of another embodiment of the middle protrusion structure of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 2-4, the device for preventing the coupler key block from dropping described in this embodiment includes two arc-shaped clamping plates 1 that are arranged in an up-down symmetrical manner, the arc-shaped clamping plates 1 are provided with flange plates 2 at the butt joints, the flange plates 2 of the upper and lower arc-shaped clamping plates 1 are fixedly connected through screws 3 and nuts 4, and in this embodiment, the flange plates 2 of each side are all connected through two sets of screws 3 and nuts 4, so that the connection strength is improved.

Two sides of the arc-shaped clamping plate 1 are provided with limiting edges 5.

As shown in fig. 5, when the coupler is used, the two arc-shaped clamping plates 1 are respectively buckled on the butt flange of the coupler, then the two arc-shaped clamping plates 1 are fixedly connected through screws 3 and nuts 4, the limiting edge 5 is clamped on the side surface of the butt flange to play an axial limiting role, the arc-shaped clamping plates 1 and the butt flange are prevented from generating axial positions, and further the arc-shaped clamping plates 1 are prevented from falling off intentionally, so that the key block of the coupler is blocked in a cavity formed by the two arc-shaped clamping plates 1 in a surrounding mode, the key block cannot fall off even if the key block is loosened, buffering time is brought to patrol and examine work of workers, and potential safety hazards caused by accidental falling of the key block are eliminated; and the utility model discloses can directly install under the condition of not disassembling the shaft coupling, great improvement the convenience that uses, be particularly useful for old project transformation.

A plurality of limiting edges 5 are arranged at intervals, as shown in fig. 2 and 4, in the embodiment, two limiting edges 5 are arranged at intervals; of course, the position-limiting edge 5 may also be of a continuous structure, i.e. the middle of the position-limiting edge 5 is not notched.

In the embodiment, the limiting edge 5 and the arc-shaped clamping plate 1 are of an integrally cast structure; of course, the limiting edge 5 can also be fixed on the arc-shaped clamping plate 1 by welding.

As shown in fig. 3, the inner side surface of the limiting edge 5 is provided with a protruding structure 6, the height of the protruding structure 6 is 1-2.5mm, and in this embodiment, the protruding structure 6 is a continuous strip-shaped structure.

In another embodiment, as shown in fig. 6, the protrusion structure 6 is composed of a plurality of point-like protrusions arranged at intervals, and the point-like protrusions are hemispherical structures.

Through setting up protruding structure 6 for protruding structure 6 directly contacts with flange's side at the in-process that arc cardboard 1 clamped, when arousing flange's side or spacing inboard unevenness along 5 because manufacturing error, because protruding structure 6's area is little, so can directly strike arc cardboard 1 through instruments such as hammers and target in place, guarantee the smoothness of installation.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. The utility model provides a prevent device that shaft coupling key piece dropped which characterized in that: the clamping device comprises two arc-shaped clamping plates which are symmetrically arranged up and down, wherein flange plates are arranged at the butt joint of the arc-shaped clamping plates, and the flange plates of the upper arc-shaped clamping plate and the lower arc-shaped clamping plate are fixedly connected through bolts and nuts;

and limiting edges are arranged on two sides of the arc-shaped clamping plate.

2. The device of claim 1, wherein the coupling key block is prevented from falling off: the limiting edges are provided with a plurality of limiting edges at intervals.

3. The device of claim 1, wherein the coupling key block is prevented from falling off: the limiting edge is of a continuous structure.

4. The device of claim 1, wherein the coupling key block is prevented from falling off: the limiting edge and the arc-shaped clamping plate are integrally cast and formed.

5. The device of claim 1, wherein the coupling key block is prevented from falling off: the limiting edge is fixed on the arc-shaped clamping plate in a welding mode.

6. The device of claim 1, wherein the coupling key block is prevented from falling off: and a convex structure is arranged on the inner side surface of the limiting edge.

7. The device of claim 6, wherein the coupling key block is prevented from falling off: the height of the protruding structure is 1-2.5 mm.

8. The device of claim 6, wherein the coupling key block is prevented from falling off: the protruding structure is a continuous strip-shaped structure.

9. The device of claim 6, wherein the coupling key block is prevented from falling off: the protruding structure is composed of a plurality of point-shaped protrusions arranged at intervals.

10. The device of claim 9, wherein the coupling key is adapted to be prevented from falling off: the point-shaped bulges are of hemispherical structures.

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