JPS60155331A - Propeller fix/remove working device - Google Patents

Abstract

PURPOSE:To make it possible to safely fix and remove a propeller by forming shaft holders on the opposed end faces of bearing elements of a propeller shaft and by arranging chucks on the inner faces of the shaft holders. CONSTITUTION:On the upper section of the support body, the bearing member of a propeller shaft is provided, which has two bearing elements 6 fitted on the shaft in parallel to a base 5. And on the opposed end faces of the bearing elements 6, shaft holders 9a, 9b are formed, and on the bearing elements 6 plural chucks 12 are radially arranged so that they may face the inner faces of the shaft holders 9a, 9b. In this way, the propeller is supported by both of the end faces with its peripheral surface being grasped with equal spaces; thus the operation safety can be secured without any danger of dropping it, because the propeller is firmly held when the shaft bearing member is turned for the convenience of operations from the horizontal direction or any other directions.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a propeller removal work machine having a propeller gripping device used for attaching and detaching propellers of large ships and the like.

The propulsion propeller of a ship is usually installed on the underside of the ship's hull, and it is impossible to lift it directly with a crane.
Since the rudder is attached immediately after the propeller, it is impossible to pull it out to the stern side. Furthermore, although large propellers are heavy, they are relatively thin-walled and made of soft alloy, so they are easily damaged, and attaching and detaching them requires a great deal of effort and care, reducing the work period. However, over a long period of time, dock usage fees and other expenses increased, resulting in huge losses.

The propeller attachment/detachment work machine according to the present invention has a shaft support attached to the upper part of the support consisting of a base, a column, etc., and the shaft support has two bearing bodies pivotally attached to the base part in parallel. Shaft clamping parts are formed on the opposing end surfaces of both bearing bodies, and a plurality of chuck bodies are arranged radially on the bearing bodies so as to face the inner peripheral surfaces of both shaft clamping parts, so that the propeller can be safely attached and detached in a narrow space. It is intended to make this possible, and was provided in order to solve the problems described above.

An embodiment of the present invention will be described below with reference to the drawings.

1 is a base, and a support 2 is erected on the base 1.
For example, by means of a hydraulic cylinder 1a provided on the base 1, etc., it is possible to move forward and backward and left and right on the base 1.

Further, the column 2 can be rotated around a vertical axis by a rotation mechanism using a gear 2a etc. provided at the base, and a shaft support 3 is fitted to the column 2 so as to be movable up and down by a lift cylinder 2b etc. There is. The shaft support 3 includes a lifting arm 4 fitted to the support 2, a base portion 5 which is supported on one end surface of the lifting arm 4 and is rotatable around a horizontal axis by a turning mechanism such as a gear 3a, and the base portion 5. The propeller is comprised of a bearing body 6 which is rotatably mounted on the end face of the propeller via shafts 5a and 5b in parallel with an interval slightly wider than the length of the boss P of the propeller, and a host end face support member 7. The bearing body 6 is composed of two bearing arms 6a and 6b that are journalled in parallel and facing each other on a post end support.
6b is adapted to swing by hydraulic cylinders 3a and 3b attached to the base portion 5, and has both bearing arms (ia,
Semicircular shafting portions 9a, 9b are provided on opposite end surfaces of 6b, respectively.
is formed with a notch, and when the bearing arms 6a, 6b are swung open and closed by hydraulic cylinders 8a, 8b, one is inserted into the shaft supporting parts 8a, 8b.
It is designed to accept a 1'J flat shaft.

Furthermore, a bearing arm 5a faces the host end support 7.

Ra b has a surface that comes into contact with one end surface of the boss P of the propeller, and a chuck mounting groove 10 for a four-blade propeller and a chuck for a five-blade propeller on the ridge surface.

A chuck device groove 11 is radially bored, and a chuck device 12 is selectively attached according to the type of propeller blade to be attached or detached. The chuck device 12 includes a chuck cylinder 13 and a chuck claw 14, and is configured to grip the propeller by pressing the chuck claw 14 against the outer peripheral surface of the boss P of the propeller using hydraulic pressure. Moreover, the bearing arm 6a,
A locking device 15 is provided at the tip of the opposing surface of the bearing arm 6b. Locking plates 16, 16' are erected near the surface of the bearing arm 6aIilI8, and two hydraulic cylinders 17. 17' are fixed in parallel, and the lots 18 and 18' of 17' are pushed out in opposite directions to form the engagement hole 1 of +iiij temporary locking 16.16'.
9, 19' 6m concave t-shaped insert, bearing arm 6a,
6b is locked to prevent separation of the two.

On the other hand, the base of a Y-shaped bracket 20 is pivotally attached to the tip of the protruding part of the base part 5 jjjH surface of the boss end support 7, and a ring-shaped presser plate 21 that presses the end surface of the propeller boss P is attached to the tip. It is pivoted at two points on the outer circumferential end face facing each other in the diametrical direction. Further, the Y-shaped bracket 20 is swung in the direction of the bearing section 6 by a hold cylinder 22 in which the rod end is pivoted to the Y-shaped bracket 20 and the rear end of the cylinder is pivoted to the base section 5. 6a, 6b and the contact surface of the presser plate 21 against the propeller boss P to sandwich both end surfaces of the propeller boss P. The cylinder for driving the sliding portion and the like mentioned above may be another driving device such as a screw. In addition, in this embodiment, the shaft support 3 is the base 1
However, as in the embodiment shown in FIG. 8, the shaft support 3 may be configured to be able to rise and fall freely by expanding and contracting the hydraulic cylinder 23, etc., and the relationship between the screw shaft and the hull, Alternatively, it may be possible to operate it at a convenient angle in relation to the dock.

Thus, the propeller attachment/detachment machine according to the present invention positions the shaft support 3 at a convenient location near the propeller of the ship, pushes the bearing arms 6a, 6b open with the hydraulic cylinders 8a, 8b, and opens the shaft clamping part 'la. , 9b, and the bearing arms 6a, 6b are arranged such that the propeller boss P is located between the bearing arms 6a, 6b and the host end support 7.
are closed by hydraulic cylinders FJa and 8b, and the locking device 1
Lock with 5. Next, the bearing arm 5. a and 5b are brought into contact with each other, and at the same time, the other end surface is brought into contact with the presser plate 21 of the boss end support 7,
The chuck claws 14 of the chuck device 12 grip the outer peripheral surface of the boss P of the propeller. The propeller and the propeller shaft are fitted with a taper, but since the screws have been loosened beforehand with a trowel, the propeller is held by the shaft support 3, and the propeller shaft can be pulled out. After that, the propeller can be removed by rotating the base part 5 while holding the propeller on the shaft support 3, or by raising and lowering it using the support 2 or support arm and placing it on a separately provided pedestal, or by lifting it with a crane and transporting it to another place. Tori (shi) is completed.

As described above, the propeller attachment/detachment work machine according to the present invention has a shaft support for the propeller shaft attached to the upper part of the support, and the shaft support has two bearing bodies pivotally attached to the base portion in parallel. Shaft clamping parts are formed on opposing end faces of the bearing body, and a plurality of chuck bodies are arranged radially on the bearing body so as to face the inner peripheral surfaces of both shaft clamping parts, so that the propeller is supported on both end faces of the shaft clamping parts. Along with
The outer circumferential surface can be gripped at even intervals, so
The propeller is held securely, and even when the shaft support is operated not only horizontally but also in the direction convenient for the work, the propeller is held securely and there is no risk of it falling off ( It is safe, and since the propeller is held and removed by the shaft support, there is no need to use a hoist, etc. to hang the 5 propellers, or to change them. As a result, the operating time increases, which greatly contributes to improving profits.Furthermore, the number of workers can be reduced to one person, and labor costs are saved as the number of workers is not limited to skilled workers. The effect of this also varies from person to person.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the propeller attachment/detachment work machine according to the present invention, FIG. 2 is a front view of a coaxial bearing body, and FIG. 3 is a plan view of a gripping device consisting of a coaxial bearing body and a boss end face support. Fig. 4 is a front view of the locking device of the coaxial bearing body, Fig. 5 is a side view of the locking device, Fig. 6 is a side view showing the locking state of the locking device, and Fig. 7 is the same X-X The sectional view and FIG. 8 are front views showing another embodiment of the propeller attachment/detachment working machine. 190. Base 211, pillar 306. Axial support 468. Lifting arm 50. , base portion 661. Bearing bodies 6a, 6b, . . ., bearing arms 701. Hoss end support members 9a, 9b, . . , shaft support portions 10, . 4-blade angle propeller mounting groove 11, . 5-blade propeller mounting groove 12, chuck device 15, locking device 16.16', locking plate 17.17', hydraulic cylinder 19.19'09. Engagement hole 21, boss of presser foot propeller, p Patent use 1 person Goryo Heavy Industries Co., Ltd. Seiwa Kiko Co., Ltd.

Claims (1)

[Claims] A shaft support for a propeller shaft is attached to the upper part of the support, and the shaft support has two bearing bodies rotatably attached to the base part in parallel, and a shaft supporting part is formed on the opposing end surfaces of the two bearing bodies. , a propeller attachment/detachment work machine, characterized in that the bearing body has a plurality of chuck bodies arranged radially so as to face the inner circumferential surfaces of both shaft clamping parts.