JP2532641Y2 - Aircraft level adjustment device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a level adjusting device for an airframe for accurately and easily installing a precision machine or the like at a predetermined position.

[0002]

2. Description of the Related Art Hitherto, as shown in FIG. 3, there has been known a level adjusting jack of an airframe for accurately installing a precision machine or the like at a predetermined position.

The level adjusting jack 20 has a female screw piece 23 fixed to a bracket 22 provided on the side of a body 21 of a precision machine or the like, and an adjust bolt 24 which can be moved up and down to the female screw piece 23.
Into the adjustment bolt 24, and
A fixed receiving stand 26 whose inclination is adjusted by 25 is attached.

When adjusting the level using the jack 20, when a tool is applied to the locking portion 27 on the upper portion of the adjusting bolt 24 to rotate the adjusting bolt 24, the female screw piece 23 screwed to the adjusting bolt 24, that is, The height of the body 21 is finely adjusted by lifting and lowering the body 21. However, since the adjustment bolt 24 and the fixed receiving base 26 are pressed against each other by the weight of the body 21 and rotate integrally, the bolt 24 Rotation is very heavy due to frictional resistance, it is difficult to operate and it is heavy labor.In addition, due to the rotation of the fixed receiving stand 26, there is a problem that the machine 21 is displaced and accurate installation of the machine is not performed. there were.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problem, and in which an internal thread is attached to a mounting body provided at an appropriate position on an airframe, and an adjusting screw is attached to the internal thread. At the same time as screwing, an upper receiving seat whose inclination is adjusted by the arc-shaped contact surface is provided at the lower part of this adjusting screw, and the lower receiving seat is rotatably attached to the lower part of this upper receiving seat via a bearing, It is an object of the present invention to provide a level adjusting device for an airframe, which can easily perform a leveling operation by a simple and light rotation operation.

[0006]

Means of the present invention for achieving the above object are to provide a fuselage, a screw body for fixing the fuselage to a mounting body provided at a proper position of the fuselage, and screwing the female body to the screw body. An adjusting screw body, an upper seat provided at a lower portion of the adjusting screw, the inclination of which is adjusted by an arc-shaped contact surface, and a lower seat rotatably attached to the lower portion of the upper seat via a bearing. , The configuration of the level adjusting device of the body.

[0007]

The present invention configured as described above has the following effects.

When the adjusting screw attached to the female screw body of the mounting body of the body is rotated forward or backward, only the adjusting screw is smoothly rotated by the bearing interposed between the upper receiving seat and the lower receiving seat. Then, with the rotation, the airframe fitted with the female screw body is raised or lowered, so that the desired airframe level adjustment is performed.

At this time, since the rotational force of the adjusting screw and the upper seat is not transmitted to the lower seat at all by the bearing, the body is prevented from being deflected due to the rotation of the lower seat.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an apparatus for adjusting the level of an aircraft according to the present invention will be described with reference to the drawings.

In FIG. 1, A is a level adjusting device for an airframe. For example, in a buried pipe propulsion machine, a heavy construction machine or a general-purpose precision machine as shown in FIG. For installation, a body 1 of the machine b, a screw body 3 for fixing to the mounting body 2 of the machine 1, an adjusting screw 4 screwed to the female thread body 3, and this adjusting screw 4 and an upper seat 5 provided at a lower portion of the upper seat 4.
And a lower receiving seat 7 attached to the lower part of the housing via a bearing 6.

An apparatus A according to one embodiment of the present invention is employed, for example, in the buried pipe propulsion machine b, which mounts a cutting machine 9 for propelling the buried pipe 8 in the body 1. And
A buried pipe 8 in which a screw auger 10 is provided is connected to the front side of the grinding machine 9.

The screw body 3 is provided with a square screw 3a having durability and strength against vertical load and the like.
The square female screw 3a is fixed to a mounting body 2 extending outside the body 1 so as to be located in a vertical direction, and is used at a plurality of locations in the body 1 such as the buried pipe propulsion device b. If so, about 8 to 10 places are provided.

The adjusting screw 4 is provided with a square male screw 4a which is screwed with the square female screw 3a on the outer periphery, and is screwed to the mounting body 2 so as to be able to move up and down. A horn-shaped or groove-shaped engaging portion 11 on which a tool such as a wrench or wrench is engaged.
In addition, a contact shaft 12 is continuously provided at a lower portion, and an abutting surface 13 having an arcuate lower surface is formed, and an upper surface has an arcuate receiving surface 14 that matches the arcuate abutment surface 13. The upper receiving seat 5 is attached by a holding plate 15 and a set screw 16, and the inclination of the adjusting screw 4 can be adjusted within a range of 360 ° by the arc-shaped contact surface 13 and the receiving surface 14. .

The lower seat 7 is rotatably mounted on the lower portion of the upper seat 5 via a bearing 6 so as to be rotatable in the horizontal direction. The upper seat 5 and the lower seat 7 are connected to each other by a connecting pin.
It is connected by 17 so as not to be separated.

The bearing 6 uses a well-known thrust ball bearing capable of withstanding a large load. A V-ring 18 is provided between the upper bearing 5 and the lower bearing 7 on the outer periphery thereof.
Is provided to prevent the intrusion of dust, water, foreign matter, and the like from the outside so as not to hinder easy rotation.

Next, the operation of the embodiment A according to the present invention will be described.

On the outer periphery of the body 1 of the buried pipe propulsion device b,
At the lower side, an attachment body to which the female screw body 3 is fixed by welding or the like is screwed with bolts or the like at about eight places.
When the adjusting screw 4 having the upper receiving seat 5 and the lower receiving seat 7 attached to the lower portion thereof is screwed into the lower portion, preparation for adjusting the level of the body 1 in the propulsion device b is completed.

When each adjusting screw 4 is turned forward or backward by applying a tool to a locking portion 11 provided on an upper portion thereof so that the horizontal intubation is performed in the ground, the upper receiving seat 5 and the adjusting screw 4 are rotated. Lower seat 7
The adjustment screw 4 and the upper receiving seat 5 under the adjustment screw 4 are smoothly rotated by the bearing 6 interposed therebetween, and with this rotation, the body 1 with the female screw 3 screwed thereto is raised. As the vehicle descends, the level adjustment of the desired aircraft 1, that is, the propulsion device b is performed by operating the devices A provided at various places in the aircraft 1 in the same manner.

The rotational force of the adjusting screw 4 is not transmitted to the lower seat 7 at all by the bearing 6 interposed between the upper seat 5 and the lower seat 7. There is no delusion of the airframe 1 due to the rotation of.

[0021]

According to the present invention constructed as described above, a bearing is interposed between the upper seat and the lower seat at the lower portion of the adjusting screw, so that the adjusting screw is rotated when rotating. The frictional resistance can be reduced as much as possible, and the operation can be easily performed with a light force by hand. Therefore, the labor burden at the time of adjustment can be greatly reduced.

Also, since the lower seat installed on the installation surface such as the ground does not cause any rotation with the rotating adjusting screw, the displacement of the aircraft can be prevented, and the machine can be installed with high accuracy. You. And so on.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a body level adjusting device according to the present invention.

FIG. 2 is an explanatory view showing a propulsion device employing the body level adjusting device of the present invention.

FIG. 3 is a partially cutaway front view showing a conventional level adjustment jack.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airframe 2 Attachment body 3 Female thread body 4 Adjustment screw body 5 Upper seat 6 Bearing 7 Lower seat 13 Arc-shaped surface

Claims (1)

(57) [Scope of request for utility model registration] 1. An airframe, a screw body for fixing to an attachment body provided at a proper position of the airframe, an adjusting screw body screwed to the female screw body, and an arcuate surface provided at a lower portion of the adjusting screw body. A level adjuster for an airframe, comprising: an upper seat whose inclination is adjusted by a lower seat; and a lower seat which is rotatably mounted via a bearing below the upper seat.