JP2002129769A - Manual turntable for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manual turntable for an automobile which reduces the deflection of its load carrying platform and can be assembled and installed easily unlike the conventional manual turntable for an automobile the load carrying platform of which deflects largely due to an eccentric load when an automobile gets on and out of the turntable and which is difficult to be assembled and installed due to heavy components. SOLUTION: A pressurized roller bearing 8 and a discoid friction plate 10 are arranged to face each other in the bearing section of the turntable and a compressive prestress is applied to the main column 14 of the turntable in the axial direction. In addition, the top board 20 of the turntable is divided into eight parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for loading a car on a bed, rotating the bed and changing the direction of the car, and more particularly to a turntable of a car for manually and indirectly rotating the bed.

[0002]

2. Description of the Related Art The prior art relating to the present invention is disclosed in Japanese Patent Application No. Hei 11
-272919.

[0003]

The apparatus according to the invention raises and lowers the rotating part by a small amount. 2. Bring the rotation receiver to the center. These two points are essential.

[0004] As a result, in the peripheral portion of the carrier, the backlash of the rotating portion is amplified by several tens of times, and the deflection due to the eccentric load when the vehicle enters and exits is large.

[0005] In order to solve this problem, (1) the fitting length of the rotation receiving portion is lengthened, and the processing accuracy of that portion is increased.
2. Enlarge the members constituting the loading platform, strengthen the connection by welding or the like, and increase the rigidity. The above two measures are taken.

[0006] For this reason, polishing and welding are required for the production, and in the assembly and installation work at the site, since the members are large and heavy, it is necessary to use transportation and lifting equipment such as a wrecker, and the cost and time are increased. It took a lot.

[0007]

In order to solve these problems, according to the present invention, a tapered roller bearing 8 and a tapered friction plate 10 which are preloaded by a spring 5 are arranged so as to face the main shaft slide portion 1a.

In connecting the main column 14 and the outer cylinder 7, the bracket (1) 15 equally divides and holds the outer circumference of the outer cylinder 7, and uses the stay (1) 18 fastened in the middle to stud bolt 16 The tension was applied to the outer cylinder 7 side with.

The top plate 20 was divided and fastened to each other on the main column 14 by means of a bracket (2) 22.

The present invention provides a manual automobile turntable which solves the problem by taking the above measures.

[0011]

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

FIG. 1 is a plan view of the present invention, and FIG. 2 is a view through the center of the apparatus shown in FIG.
2 shows a cross-sectional view along A.

As shown in FIG. 1, the present invention has a circular outer periphery, so that vehicles can be taken in and out from all directions. Further, since the upper surfaces of the base loading section 4b and the loading platform c shown in FIG. 2 are substantially at the same level, the vehicle can be smoothly moved in and out without any trouble.

The fixed support portion a shown in FIG. 2 is formed by an anchor bolt 2 and a nut (1) 3 embedded in a base portion d.
It is firmly fixed in contact with the surface of the base mounting portion 4a.

The rotary sliding portion b is fitted to the fixed supporting portion a, has a main pillar 14 radially arranged on the outer periphery, ends are interconnected by stays (2) 19, and a top plate 20 Are combined to form a loading platform c.

FIGS. 3 and 4 show a fixed support portion a and a rotary sliding portion b.
FIG. 4 is an explanatory diagram showing the relationship in detail.

In each of the drawings, the main shaft 1 is constituted by a main shaft slide portion 1a and a main shaft flange portion 1b, and the conical friction plate 10 is constituted by a conical friction plate taper portion 10a and a conical friction plate flange portion 10b.

The main shaft flange 1b is fixed to a base mounting portion 4a by anchor bolts 2 and nuts (1) 3 (shown in FIG. 2).

A spring 5 disposed on the upper surface of the spindle flange 1b brings the spring support 6 into contact with a tapered roller bearing inner ring 8a slidably fitted to the spindle slide 1a.

Further, a deep groove ball bearing inner ring 9a is slidably fitted on the upper part of the main shaft slide portion 1a.

On the upper surface of the main shaft 1, a conical friction plate 10 is fastened and fixed by bolts (1) 11.

What has been described above is assumed to be a fixed support portion a as shown in the drawing.

As shown in FIGS. 3 and 4, the outer cylinder 7 is press-fitted with a tapered roller bearing outer ring 8b at the lower portion of the inner diameter and a deep groove ball bearing outer ring 9b at the upper portion. The part 7b is formed.

Further, the cover 12 is bolted to the upper surface (2).
Reference numeral 13 prevents foreign matter from entering the inside of the fastening outer cylinder 7.

The above components are collectively referred to as a rotary sliding portion b as shown in the drawing.

FIG. 3 shows a state in which the outer cylinder 7 is pushed up by the reaction force of the spring 5 when no load is applied, and the outer cylinder taper portion 7b and the conical friction plate taper portion 10a bite into a wedge shape. Show.

FIG. 4 shows that when a load is applied, the outer cylinder 7 pushes down the spring 5, and the outer cylinder taper portion 7b and the conical friction plate taper portion 1
This shows a state in which a gap α has occurred between 0a.

At this time, a deep groove ball bearing 9 is provided to prevent a play corresponding to the clearance α from being generated between the outer cylinder 7 and the main shaft 1.

FIGS. 5 and 6 show the loading platform c summarized in the figures.
And the outer cylinder 7 are fastened.

The outer periphery of the outer cylinder 7 is divided into eight parts, and there are two upper and lower outer cylinder screw holes 7a. The bracket (1) 15 is formed by a stud bolt 16 and a nut (2) 17.
Has been fixed.

The main column 14 is connected to the bracket (1) 15 and the stay (1) 18 by bolts (4) 24 and nuts (4) 25, and the studs 16 penetrate the center of the stay (1) 18. A compressive stress is applied by the nut and the nut (2) 17 in such a manner as to be drawn in the center direction, and the root is in contact with the outer cylinder 7 to develop in a fan shape.

In FIG. 7, the bracket (1) 15, the stay (1) 18, the stay (2) 19 and the main column 14 are fixed by bolts (4) 24 and nuts (4) 25 penetrating the respective holes. Shows the connection.

In FIG. 8, a top plate 20 (shown in FIG. 1), which is divided into eight parts, is passed through a bracket (2) 22 surrounding the lower part of the main column 14 and the top plate 20 on the main column 14. It is shown that the bolt (3) 21 and the nut (3) 23 are fixed and connected.

[0034]

The tapered roller bearing 8 and the tapered friction plate 10, which are preloaded on the main shaft slide portion 1a, are opposed to each other. Therefore, even if the precision of parts is low, the main shaft 1 and the outer cylinder 7 are strongly held by the wedge effect. There is no play.

2. If the main column 14 is fixed at the base and is subjected to a compressive prestress in the axial direction and is held by the outer cylinder 7, much greater rigidity can be obtained than by welding the joints.

3, the main column 14 is wrapped by the bracket (2) 22 and the top plate 20 is fastened to each other so that the top plate 20 is effectively divided, so that the same rigidity as an integrated structure by welding is obtained. In addition, the weight of a single component can be reduced.

According to the present invention, the above three effects can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing the whole of the present invention.

FIG. 2 is a sectional view taken along the line AA through the center of FIG.

FIG. 3 is an explanatory diagram showing a state where the rotation of the vehicle is being braked before the vehicle enters the loading platform c.

FIG. 4 is an explanatory view showing a mode in which an automobile is loaded on a loading platform c and is rotatable;

FIG. 5 is a cross-sectional view taken along the line DD of FIG. 2 and omitting a fixed support portion a.

FIG. 6 is a sectional view taken along line EE in FIG. 5;

FIG. 7 is a sectional view taken along the line BB of FIG. 1;

FIG. 8 is a sectional view taken along the line CC of FIG. 1;

[Explanation of symbols]

 a Fixed support part b Rotating slide part c Loading platform part d Base part 1 Main shaft 1a Main shaft slide part 1b Main shaft flange part 2 Anchor bolt 3 Nut (1) 4a Base mounting part 4b Base insertion part 5 Spring 6 Spring support 7 Outside Cylinder 7a Outer cylinder screw hole part 7b Outer cylinder taper part 8 Tapered roller bearing 8a Tapered roller bearing inner ring 8b Tapered roller bearing outer ring 9 Deep groove ball bearing 9a Deep groove ball bearing inner ring 9b Deep groove ball bearing outer ring 10 Conical friction plate 10a Conical friction Plate taper portion 10b Conical friction plate flange portion 11 Bolt (1) 12 Cover 13 Bolt (2) 14 Main pillar 15 Bracket (1) 16 Stud bolt 17 Nut (2) 18 Stay (1) 19 Stay (2) 20 Top plate 21 bolt (3) 22 bracket (2) 23 nut (3) 24 bolt (4) 25 nut (4 )

Claims (3)

[Claims] 1. A repulsive force of a spring 5 disposed at a lower portion of a main shaft 1 is transmitted to an outer cylinder 7 through a tapered roller bearing 8 and regulated by a conical friction plate 10 fixed to an upper portion of the main shaft 1. A turntable having a configuration for braking the rotation of No. 7. 2. A bracket (1) 15 to which an end of a main pillar 14 is fastened is provided on the outer periphery of the outer cylinder 7, and the bracket (1) 15 is fastened to the outer cylinder 7 at one end of a stud 16 and a stay (1) is provided at the other end. 18 is a turntable having a structure in which the main column 14 is connected to support the middle of the main column 14 and the main column 14 is radially extended from the outer cylinder 7. 3. Wrapping the main column 14 with a bracket (2) 22;
Further, a turntable including a top plate 20 on the main column 14 connected to form a loading platform c.