JPH0738767U - Brake cover structure of undulating winch of crane - Google Patents

Abstract

(57) [Summary] [Purpose] To enable safe removal work of the brake cover of the crane winch. [Structure] A brake box 8 with a built-in brake is provided on one side in the direction of the rotation axis of a hoisting winch 4 provided on a swivel base 2 of a crane, and the brake box 8 can be attached and detached on the end side by fitting. The brake cover 9 is attached, and at a predetermined position in the circumferential direction of the brake cover 9, an eyebolt 10 for gripping is integrally connected by projecting outward in a direction orthogonal to the direction of the rotation axis of the undulating winch 4, and holding the eyebolt 10. With the brake cover 9 supported, the brake cover 9 can be safely removed without being accidentally dropped.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a crane in which a mast is provided with a swivel base, a boom is provided on the swivel base so that the boom can be hoisted and swung, and a hoisting winch for winding the hoisting wire connected to the boom is provided on the swivel base. Concerning the brake cover structure of the undulating winch.

[0002]

[Prior art]

 Conventionally, when removing the brake cover from the brake box for maintenance and inspection of the brake, the operator holds the cylindrical brake cover with one hand, and in that state holds the brake cover with the other hand such as a hammer. The brake cover is slightly slid outwards while gently applying vibration to the brake cover to remove it.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned brake cover is heavy, even if it is small, weighing 10 kg or more, and when it comes off the brake box, the entire weight of the brake cover is applied, and there is a risk of accidental slipping from the hand, falling to the feet, and injury. there were.

[0004] Although a handrail is generally provided around the swivel base, when the hand is slid, the brake cover falls from the gap of the handrail to damage other objects or other workers. There was a risk of collision with.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to safely remove the brake cover.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a swivel base on the mast so that the boom can be hoisted and swung, and the hoisting wire connected to the boom can be fed out. In the brake cover structure of the undulating winch of the crane in which the undulating winch is installed on the swivel base, a brake box with a built-in brake is provided on one side of the axis of the undulating winch, and the end side of the break box. The brake cover is detachably attached by fitting to a predetermined position in the circumferential direction of the brake cover, and a gripping member for gripping is integrally connected to project outward in a direction orthogonal to the direction of the rotation axis of the undulating winch. To do.

[0007]

[Action]

 According to the construction of the brake cover structure of the hoisting winch of the crane of the present invention, when the brake cover is removed, while holding the grip member with one hand, hit the brake cover with the other hand with a hammer etc. The brake cover can be removed by slightly sliding it laterally outward while applying light vibration to the cover. Also, by connecting a rope or the like to the gripping member and connecting the other end side to a handrail or the like, it is possible to favorably prevent accidental drop of the brake cover after removal.

[0008]

【Example】

 Next, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall side view of a crane to which a hoisting winch brake cover structure for a crane according to a first embodiment of the present invention is applied, in which a mast 1 is provided with a swivel base 2 so that the mast 1 can swivel. A boom 3 is provided on the platform 2 so as to be capable of undulating and swinging, and a hoisting winch 4 is provided, and a hoisting wire 5 that is wound out from the hoisting winch 4 is connected to the boom 3 to construct a crane A. ing.

As shown in the enlarged side view of the main part of FIG. 2 and the front view of FIG. 3, the undulating winch 4 has an electric motor 7 interlockingly connected to one side in the rotational axis direction of the winding drum 6. At the same time, a brake box 8 in which a brake (not shown) is installed is provided on the other side of the rotation axis direction, and a brake cover 9 is detachably attached to the end portion side of the brake box 8 by fitting.

An eyebolt 10 for gripping is integrally connected by welding to a predetermined position in the circumferential direction of the brake cover 9 so as to project outward in a direction orthogonal to the direction of the rotation axis of the undulating winch 4.

With the above structure, when the brake cover 9 is removed for maintenance and inspection of the brake, the eyebolt 10 is held (gripped) with one hand, and the other hand is used to strike the brake cover 9 with a hammer or the like. While gently applying vibration to the brake cover 9, the brake cover 9 can be removed by slightly shifting it laterally outward. At this time, by holding the eyebolt 10 when the brake cover 9 comes off, it is possible to hold the brake cover 9 in a state of supporting its weight in a stable state, and prevent an unexpected drop. .

At the time of removal, the handrail 11 erected on the swivel base 2 and the eyebolt 10 are connected by a rope 12 or the like by using the through hole 10a of the eyebolt 10, and the break cover 9 is accidentally removed. It may be better prevented from falling.

FIG. 4 is a front view of the second embodiment, and is different from the first embodiment in the following points. That is, instead of the eyebolt 10, a gripping grip member 13 is integrally formed by welding at a predetermined position in the circumferential direction of the brake cover 9 so as to project outward in a direction orthogonal to the direction of the rotation axis of the undulating winch 4. They are connected. The other structure is the same as that of the first embodiment, and the description thereof is omitted by giving the same reference numerals.

The present invention is not limited to the eyebolt 10 and the handle member 13 as in the above-described embodiment, but can be modified in various shapes and configurations. In short, when the brake cover 9 is removed, Anything that can be easily gripped so as not to fall is referred to as a gripping member.

[0016]

[Effect of device]

 As explained above, according to the brake cover structure of the hoisting winch of the crane of the present invention, the brake cover can be removed while holding the gripping member with one hand, so that the conventional cylindrical one can be held. It is possible to avoid accidentally slipping the brake cover from the hand when it is removed and heavy, as in the case of removing it again, and it is now possible to safely remove the brake cover. Also, by using a gripping member, connecting a rope, etc. to the gripping member, and connecting the other end side to a handrail, etc., it is possible to easily and satisfactorily prevent accidental drop after it is disengaged. it can.

[Brief description of drawings]

FIG. 1 is an overall side view of a crane to which a brake cover structure for a hoisting winch of a crane according to a first embodiment of the present invention is applied.

FIG. 2 is an enlarged side view of a main part.

FIG. 3 is a front view of FIG.

FIG. 4 is a front view of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Mast 2 ... Revolving base 3 ... Boom 4 ... Relief winch 5 ... Relief wire 8 ... Brake box 9 ... Brake cover 10 ... Eyebolts as gripping members 13 ... Handle members as gripping members

Claims (1)

[Scope of utility model registration request] 1. A mast is provided with a swivel base capable of swiveling, a boom is provided on the swivel base so as to be capable of hoisting and oscillating, and a hoisting winch for winding up and down a hoisting wire connected to the boom is provided on the swivel base. A brake cover structure for a hoisting winch of a crane provided, wherein a brake box having a built-in brake is provided on one side of the hoisting winch in a direction of a rotation axis, and the brake box is detachably attached to an end portion side of the brake box. A crane cover characterized in that a grip member for gripping is integrally connected to the attached brake cover at a predetermined position in the circumferential direction so as to project outward in a direction orthogonal to the direction of the rotation axis of the undulating winch. Winch brake cover structure.