JPH09240991A - Winch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix and whirl-stop a shaft, even when the flange of a hydraulic motor interferes with the fitting position of the shaft by making small the diameter of an internal gear formed in a drum. SOLUTION: A drum 6 is rotatably provided on a shaft 4 horizontally built between two brackets 2, 3, an internal gear 7 formed in the drum 6 is engaged with the pinion 9 of a hydraulic motor 8 fitted to the one bracket 3, an engaging recessed part 10 for stopping whirl of the shaft 4 by engaging with the hydraulic motor 8 is formed on the end part on the hydraulic motor fitting side of the shaft 4, a flange-like slip-off preventing member 11 is provided on the projecting face from the end bracket, and the flange 8a of the hydraulic motor 8 is overlapped on the outside of the slip-out preventing member 11 so as to fit the hydraulic motor 8 to the bracket 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winch installed on a crane or the like for winding a wire rope around a drum.

[0002]

2. Description of the Related Art In a winch, a drum is rotatably provided on a shaft supported by two brackets, and an internal gear formed on the drum is engaged with a pinion of a hydraulic motor mounted on one bracket. Some rotate the drum.

In the winch of this structure, the shaft horizontally mounted between the two brackets is fixed in the axial direction and the rotation is prevented by fitting a key plate to each of the shaft ends protruding from the bracket. Further, the hydraulic motor is mounted by fixing the flange of the hydraulic motor to the mounting position of the bracket at a position where it does not interfere with the mounting position of the shaft and fixing it with bolts.

[0004]

However, in the above structure, if the diameter of the internal gear formed on the drum is reduced in order to make the entire winch compact,
The flange of the hydraulic motor interferes with the shaft mounting position,
The shaft cannot be fixed or stopped.

Therefore, the present invention provides a winch capable of fixing the shaft and preventing the shaft from rotating even if the diameter of the internal gear formed on the drum is reduced so that the flange of the hydraulic motor interferes with the mounting position of the shaft. Is intended.

[0006]

In order to achieve the above-mentioned object, the present invention provides a drum rotatably provided on a shaft extending horizontally between two brackets, and an internal gear formed on the drum is provided with one of In a winch that rotates a drum by engaging a pinion of a hydraulic motor mounted on a bracket, an engaging recess that engages with the hydraulic motor to prevent rotation of the shaft at a hydraulic motor mounting side end of the shaft. And a flange-shaped retaining member is provided on a protruding surface of the end portion of the hydraulic motor mounting side from the bracket,
The hydraulic motor is attached to the bracket by stacking the flange of the hydraulic motor on the outside of the retaining member.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in more detail based on the embodiments shown in the drawings. Winch 1
Put the shaft 4 between the left and right brackets 2 and 3,
A drum 6 is rotatably provided on the shaft 4 via bearings 5 and 5. An internal gear 7 is formed on the right flange of the drum 6 in FIG. 1, and a pinion 9 of a hydraulic motor 8 attached to the right bracket 3 meshes with the internal gear 7.

The shaft 4 has an end portion on the left bracket 2 side fixed by a key plate and a right bracket 3
On the side, that is, on the end portion on the hydraulic motor 8 mounting side, an engaging recess 10 that engages with the hydraulic motor 8 to prevent the shaft 4 from rotating is formed, and the end portion on the mounting side of the hydraulic motor 8 projects from the bracket 3. A collar-shaped retaining member 11 is provided on the surface to fix the shaft 4 in the axial direction.

The engagement recess 10 is formed in a semi-circular shape in which the engagement portion with the hydraulic motor 8 is fitted to the main body of the hydraulic motor 8 having a round tubular shape, and the retaining member 11 has a larger diameter than the shaft 4. The disk is formed in a substantially crescent shape having a semi-circular shape on the hydraulic motor 8 side.

The hydraulic motor 8 is integrally formed with a mounting flange 8a on a round tubular main body, and a part of the main body is fitted into the engaging recess 10 of the shaft 4 to attach the mounting flange 8a.
The mounting flange 8a on the outside of the retaining member 11
Is fitted to the mounting position of the bracket 3 and is fixed by the bolt 12.

With this structure, the drum 6
To reduce the diameter of the internal gear 7 formed in the hydraulic motor 8
Even if the mounting flange 8a of 1 interferes with the mounting position of the shaft 4, the shaft 4 can be fixed and prevented from rotating, and the winch 1 as a whole can be made compact. Further, the shaft 4 can be fixed and prevented from rotating without using a key plate, which is advantageous in terms of cost.

[0012]

As described above, according to the winch of the present invention, a drum is rotatably provided on a shaft extending horizontally between two brackets, and the internal gear formed on the drum is attached to one bracket. The pinion of the hydraulic motor is engaged, and an engaging recess for engaging the hydraulic motor to prevent rotation of the shaft is formed at the end of the shaft on the hydraulic motor mounting side, and the end of the shaft protrudes from the bracket. Since the flange-shaped retaining member was provided on the surface and the flange of the hydraulic motor was placed on the outside of the retaining member and the hydraulic motor was attached to the bracket, the diameter of the internal gear formed on the drum was reduced to reduce the hydraulic motor Even if the flange interferes with the mounting position of the shaft, the shaft can be fixed and prevented from rotating, and the winch as a whole can be made compact. Further, the shaft can be fixed and prevented from rotating without using a key plate, which is advantageous in terms of cost.

[Brief description of drawings]

FIG. 1 is a sectional view of a winch showing an embodiment of the present invention.

FIG. 2 is a perspective view of a shaft.

FIG. 3 is a side view of a winch.

[Explanation of symbols]

1 ... Winch, 2, 3 ... Bracket, 4 ... Shaft, 6
... drum, 7 ... internal gear, 8 ... hydraulic motor, 8a ... flange of hydraulic motor 8, 9 ... pinion of hydraulic motor 8, 1
0 ... Engagement recess, 11 ... Fall-off prevention member

Claims (1)

[Claims] 1. A drum is rotatably provided on a shaft extending horizontally between two brackets, and a pinion of a hydraulic motor attached to one of the brackets is meshed with an internal gear formed on the drum. In the winch that rotates, the engaging recess that engages with the hydraulic motor to prevent rotation of the shaft is formed at the end of the shaft on which the hydraulic motor is attached, and the bracket of the end on the side of the hydraulic motor that is attached is formed. Provided with a collar-shaped retaining member on the protruding surface from
A winch characterized in that a flange of the hydraulic motor is superposed on the outside of the retaining member and the hydraulic motor is attached to the bracket.