JPH0627081U - Airframe level adjuster - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a level adjusting device for an aircraft capable of easily performing leveling work by a simple and light rotation operation. [Structure] A female screw body 3 is attached to a mounting body 2 provided at a proper position of the machine body 1, an adjusting screw body 4 is screwed onto the female screw body 3, and the lower portion of the adjusting screw body 4 is inclined by an arcuate contact surface 13. Is provided, and a lower receiving seat 7 is rotatably attached to the lower portion of the upper receiving seat 5 via a bearing 6. [Effect] The frictional resistance during rotation of the adjusting screw can be reduced as much as possible, and it can be easily operated with a light force by human hands.
The work load during adjustment can be greatly reduced, and the lower bearing seat installed on the installation surface such as the ground does not rotate with the rotating adjustment screw body at all, preventing displacement of the machine body. The machine can be installed with high accuracy.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a level adjusting device for a machine body for accurately and easily installing a precision machine or the like at a predetermined position.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as shown in FIG. 3, there is known a level adjusting jack of a machine body for accurately mounting a precision machine or the like at a predetermined position.

In this level adjusting jack 20, a female screw piece 23 is fixed to a bracket 22 provided on the side of a machine body 21 of a precision machine or the like, and an adjust bolt 24 is screwed to the female screw piece 23 so as to be vertically movable. A fixed pedestal 26 whose inclination is adjusted by an arcuate contact surface 25 is attached to the lower part of the adjustment bolt 24.

When the level is adjusted by the jack 20, a tool is applied to the engaging portion 27 above the adjusting bolt 24 and the adjusting bolt 24 is rotated. However, the height of the machine body 21 is moved up and down to finely adjust the height.However, the weight of the machine body 21 causes the adjusting bolt 24 and the fixed pedestal 26 to come into pressure contact with each other to rotate integrally with each other. The rotation of 24 is very heavy due to frictional resistance, it is difficult to operate, and it is a heavy labor, and the rotation of the fixed pedestal 26 causes the position of the machine body 21 to be displaced so that the machine cannot be installed accurately. Met.

[0005]

[Problems to be solved by the device]

 The present invention has been made to solve the above-mentioned problems, and a female screw body is attached to a mounting body provided at an appropriate position of the machine body, and an adjusting screw body is screwed to the female screw body, and the adjusting screw body is also attached. An upper bearing is installed in the lower part of the body whose inclination is adjusted by the arcuate surface, and a lower bearing is rotatably attached to the lower part of this upper bearing via a bearing, so leveling can be performed by a simple and light rotation operation. It is an object of the present invention to provide a level adjusting device for an airframe that enables easy work.

[0006]

[Means for Solving the Problems]

 Means of the present invention for achieving the above-mentioned object are a machine body, a screw body for fixing to a mounting body provided at a proper position of the machine body, an adjusting screw body screwed to the female screw body, and this adjusting body. Adjusting the level of the machine equipped with an upper seat that is installed in the lower part of the screw body and whose inclination is adjusted by the arcuate surface, and a lower seat that is rotatably attached to the lower part of this upper seat through a bearing. In the configuration of the device.

[0007]

[Action]

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

When the adjusting screw body attached to the female screw body of the attaching body of the machine body is rotated in the normal or reverse direction, only the adjusting screw body smoothly rotates by the bearing interposed between the upper seat and the lower seat. As the machine body attached with the female screw body moves up or down with this rotation, the desired level adjustment of the machine body is performed.

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

[0010]

【Example】

 Next, an embodiment of a level adjusting device for an airframe according to the present invention will be described with reference to the drawings.

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

An apparatus A according to an embodiment of the present invention is used, for example, in the buried pipe propelling machine b, which mounts a machine 9 for propelling the buried pipe 8 on the machine body 1. A buried pipe 8 having a screw auger 10 therein is connected to the front side of the machine 9.

The bending screw body 3 is engraved with a square female screw 3a having durability and strength against vertical load and the like, and the machine body 1 is arranged so that the square female screw 3a is positioned in the vertical direction. It is fixed to the mounting body 2 extending to the outside, and is arranged at a plurality of locations in the machine body 1, for example, 8 to 10 locations in the case where it is adopted in the buried pipe propulsion machine b.

The adjustment screw body 4 has an outer peripheral surface on which a square male screw 4a that engages with the square female screw 3a is engraved, and is screwed to the mounting body 2 so as to be movable up and down. An engaging portion 11 having a square shape or a groove shape, which engages with a tool such as a wrench or a wrench, is projectingly provided on the upper portion thereof, and a contact shaft 12 is continuously provided on the lower portion thereof so that the lower surface thereof has an arc shape. An upper bearing seat 5 having an abutting surface 13 and having an arcuate receiving surface 14 matching the arcuate abutting surface 13 is attached by a holding plate 15 and a set screw 16. This arcuate abutting surface 13 Further, the inclination of the adjusting screw 4 can be adjusted in the range of 360 ° by the receiving surface 14.

The lower receiving seat 7 is attached to the lower portion of the upper receiving seat 5 via a bearing 6 so as to be rotatable in the horizontal direction, and at a position matching the axial center of the adjusting screw body 4. The upper seat 5 and the lower seat 7 are connected by a connecting pin 17 so as not to be separated from each other.

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

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

A mounting body having a female screw body 3 fixed by welding or the like to the lower side of the outer periphery of the body 1 of the buried pipe propulsion device b is screwed to about eight places by bolts or the like. When the adjusting screw body 4 having the upper bearing seat 5 and the lower bearing seat 7 attached thereto is screwed on, the level of the body 1 of the propulsion device b can be adjusted.

Then, when a tool is applied to the locking portion 11 provided on the upper portion of each adjusting screw 4 so as to be horizontally inserted into the ground, and the screw is rotated in the forward or reverse direction, The bearing 6 interposed between the lower receiving seat 7 and the lower receiving seat 7 smoothly rotates the adjusting screw 4 and the upper receiving seat 5 therebelow, and the female screw 3 which is screwed into the rotating screw 4 is attached thereto. Since the machine body 1 rises or descends, the level of the desired machine body 1, that is, the propulsion machine b is adjusted by operating the devices A provided at various places in the machine body 1 in the same manner.

Further, since 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, the lower seat 7 There is no delusion of Aircraft 1 due to the rotation of 5.

[0021]

[Effect of device]

 According to the present invention configured as described above, the bearing is interposed between the upper and lower seats in the lower part of the adjusting screw, so that the frictional resistance during rotation of the adjusting screw is maximized. It can be easily reduced with a small amount of manual force, and the labor burden at the time of adjustment can be greatly reduced.

Further, since the lower seat installed on the installation surface such as the ground does not rotate with the rotating adjusting screw at all, the displacement of the machine can be prevented and the machine can be installed with high accuracy. It It has special effects such as.

[Brief description of drawings]

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

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

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

[Explanation of symbols]

 1 Airframe 2 Mounting body 3 Female screw body 4 Adjusting screw body 5 Upper seat 6 Bearing 7 Lower seat 13 Arcuate surface

Claims (1)

[Scope of utility model registration request] 1. A machine body, a screw body for fixing to a mounting body provided at a proper position of the machine body, an adjusting screw body screwed to the female screw body, and an arcuate contact surface provided at a lower portion of the adjusting screw body. A level adjusting device for a machine body, comprising: an upper receiving seat whose inclination is adjusted by a lower receiving seat which is rotatably attached to a lower portion of the upper receiving seat via a bearing.