JP3416112B2 - Manual car turntable - Google Patents

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 an automobile on a loading platform and rotating the loading platform to change the direction of the vehicle, and more particularly to a turntable of the vehicle for manually and indirectly rotating the loading platform.

[0002]

2. Description of the Related Art Japanese Patent Application No. Hei 11 No.
There is one of -272919.

[0003]

In the device according to the present invention, 1, the rotating portion is moved up and down though it is minute. 2. Bring the rotation receiving part to the center. Two points are essential.

As a result, in the peripheral portion of the loading platform, the backlash of the rotating portion is amplified several tens of times, and the deflection due to the eccentric load when the vehicle is in and out is large.

In order to solve this, 1, the fitting length of the rotation receiving portion is lengthened to improve the processing accuracy of that portion.
2. Increase the rigidity of the members that make up the cargo bed by welding, etc. to increase the rigidity. The above two measures are taken.

For this reason, manufacturing requires polishing, welding, and the like, and in the assembly and installation work at the site, since members are large and heavy, it is necessary to carry a tow truck or the like, and to use a lifting device, resulting in cost and time. It took a lot.

[0007]

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

In the connection between the main pillar 14 and the outer cylinder 7, the bracket (1) 15 is equally divided and held on the outer circumference of the outer cylinder 7, and the stay (1) 18 fastened in the middle is used to insert the stud 16 into the stud 16. Then, tension was applied to the outer cylinder 7 side.

The top plate 20 is divided and fastened to each other by brackets (2) 22 on the main pillar 14.

The present invention provides a manual turntable for an automobile which solves the problems by taking the above means.

[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 plan view through the center of the apparatus shown in FIG.
A sectional view along -A is shown.

As shown in FIG. 1, the present invention has a circular outer periphery, which allows the vehicle to be taken in and out from all directions. Further, since the upper surfaces of the basic loading section 4b and the loading platform section c shown in FIG. 2 are substantially at the same level, the vehicle can be taken in and out smoothly 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 foundation portion d.
It is firmly fixed by abutting on the surface of the base mounting portion 4a.

The rotary sliding portion b is fitted to the fixed support portion a, has a main column 14 radially arranged on the outer periphery, and the ends are interconnected by stays (2) 19, and the top plate 20 is provided on the upper surface. To form a loading platform c.

3 and 4 show a fixed support portion a and a rotary sliding portion b.
It is explanatory drawing which showed the relationship of.

In each of the above figures, the main shaft 1 is composed of a main shaft slide portion 1a and a main shaft flange portion 1b, and the conical friction plate 10 is composed of a conical friction plate taper portion 10a and a conical friction plate flange portion 10b.

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

A spring 5 arranged on the upper surface of the main spindle flange portion 1b abuts a spring support 6 on a tapered roller bearing inner ring 8a slidably fitted on the main spindle slide portion 1a.

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

A cone friction plate 10 is fastened and fixed to the upper surface of the main shaft 1 by bolts (1) 11.

What has been described above is temporarily used as a fixed support portion a as shown in the drawing.

As shown in FIGS. 3 and 4, the outer cylinder 7 has a tapered roller bearing outer ring 8b press-fitted into its lower inner diameter, a deep groove ball bearing outer ring 9b press-fitted into its upper part, and an outer cylinder taper at its upper end portion. It is formed by molding the portion 7b.

Further, the cover 12 is bolted (2) to the upper surface.
At 13, the foreign matter is prevented from entering the tightening outer cylinder 7.

The above-mentioned items are temporarily put together as a rotary sliding portion b as shown in the drawing.

Here, in FIG. 3, when no load is applied, the outer cylinder 7 is pushed up by the reaction force of the spring 5, and the outer cylinder taper portion 7b and the conical friction plate taper portion 10a are wedge-shaped. Show.

In FIG. 4, 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 are provided.
A state in which a gap α is generated between 0a is shown.

At this time, a deep groove ball bearing 9 is provided in order to prevent looseness corresponding to the formed clearance α from occurring between the outer cylinder 7 and the main shaft 1.

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

The outer circumference of the outer cylinder 7 is divided into eight, and there are two upper and lower screw hole portions 7a for the outer cylinder. The bracket (1) 15 is attached by the studs 16 and nuts (2) 17 to each other.
Is fixed.

The main pillar 14 is connected to the bracket (1) 15 and the stay (1) 18 by bolts (4) 24 and nuts (4) 25, and the stud bolt 16 penetrates the center of the stay (1) 18. A compressive stress is applied by the nut (2) 17 so as to be pulled in the central direction, and the root of the compressive stress is brought into contact with the outer cylinder 7 to expand in a fan shape.

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

In FIG. 8, the top plate 20 (shown in FIG. 1) divided into eight parts is mounted on the main pillar 14, and the bracket (2) 22 enclosing the lower part of the main pillar 14 and the top plate 20 are penetrated. It is shown that the bolts (3) 21 and the nuts (3) 23 are fixed and connected.

[0034]

1. Since the preloaded tapered roller bearing 8 and the tapered friction plate 10 are arranged to face each other on the main spindle slide portion 1a, the main spindle 1 and the outer cylinder 7 are strongly held by the wedge effect even if the parts accuracy is low. There is no backlash.

2. If the main pillar 14 has its root fixed and is given a compressive prestress in its axial direction and is held by the outer cylinder 7, a much greater rigidity than that obtained by welding the respective joints can be obtained.

3. The top plate 20 is effectively divided by wrapping the main pillar 14 with the bracket (2) 22 and fastening the top plates 20 to each other, and the rigidity equivalent to that of the integrated structure by welding is obtained. The weight of individual parts can be reduced.

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

[Brief description of 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 view showing a state in which the rotation of the vehicle is braked before the vehicle is loaded on the loading platform c.

FIG. 4 is an explanatory view showing a mode in which an automobile is loaded on the loading platform c and the rotation thereof is freely performed.

5 is a cross-sectional view taken along the line D-D of FIG. 2, in which the fixed support portion a is omitted.

6 is a cross-sectional view taken along the line EE of FIG.

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

8 is a cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

a Fixed support b Rotating / sliding part c Loading platform d Foundation 1 spindle 1a Spindle slide 1b Spindle flange 2 Anchor bolt 3 nuts (1) 4a Foundation mounting part 4b Basic riding section 5 springs 6 Spring support 7 outer cylinder 7a Outer cylinder screw hole 7b Outer cylinder taper 8 tapered roller bearings 8a Tapered roller bearing inner ring 8b tapered roller bearing outer ring 9 deep groove ball bearings 9a Deep groove ball bearing inner ring 9b Deep groove ball bearing outer ring 10 conical friction plate 10a Conical friction plate taper 10b Conical friction plate flange 11 Volts (1) 12 covers 13 Volt (2) 14 main pillars 15 Bracket (1) 16 studs 17 Nuts (2) 18 stay (1) 19 Stay (2) 20 Top plate 21 bolts (3) 22 Bracket (2) 23 Nuts (3) 24 Volts (4) 25 nuts (4)

Claims (3)

(57) [Claims] 1. A spring 5 is arranged on the outer periphery of the spindle slide portion 1a on the upper surface of the spindle flange portion 1b of the spindle 1 fixed to a foundation portion d with the axial direction substantially vertical, and the thrust is provided on the spindle slide portion 1a above the spring 5. An outer cylinder 7 in which a tapered roller bearing inner ring 8a is slidably fitted with its pressure receiving surface facing downward, and a tapered roller bearing outer ring 8b is press-fitted into a lower port so that the inner ring can be engaged with the large diameter side facing downward. Is inserted into the main shaft slide portion 1a, and the main cylinder 1 is rotatably supported by the outer cylinder 7, and the outer cylinder 7 is provided with an outer cylinder taper portion 7b at the upper opening with the large diameter side facing upward. , The cone friction plate 10 having the cone friction plate taper portion 10a engaging with the outer cylinder taper portion 7b is fixed to the upper part of the spindle slide portion 1a, and the rotary sliding portion b is caused by the pushing force generated by the reaction force of the spring 5. The rising is regulated at the set position, and the outer cylinder 7 and the cone friction plate 10 The frictional force generated on the taper surface to be joined dampens the rotation of the rotary sliding portion b, and the taper surface of the tapered friction plate 10 and the tapered roller bearing 8 provided opposite to the upper and lower ends of the outer cylinder 7 is the drag force of the spring 5. A turntable having a shaft bearing structure in which the rotary sliding portion b is narrowed by the rotary support portion a and is aligned with the fixed support portion a. 2. An outer cylinder 7 is provided with a bracket (1) 15 in which three or more ends of the main pillars 14 are fastened to each other on the outer periphery of the outer cylinder 7, and the center of the bracket (1) 15 is embedded in the outer cylinder 7. The bracket (1) 15 is fastened to the outer cylinder 7 with the nut (2) 17 so that each main pillar 14 divides the outer circumference of the outer cylinder 7 into approximately equal parts and the top surfaces are approximately the same. The stays (1) are arranged and fastened as levels, and the middles of the main columns 14 are mutually connected by stays (1) 18, and the other end of the studs 16 penetrates through the center of the stays (1) 18 to form stays (1). By tightening the nut 18 from the outside with the nut (2) 17, it is pulled toward the outer cylinder 7 side, and the stay (1)
Each main pillar 14 fastened at 18 is a stay (1) 1
8. The turntable according to claim 1, further comprising a loading platform c configured such that the main pillar 14 is held by the outer cylinder 7 by receiving a compressive stress between the No. 8 fastening portion and the outer cylinder 7. 3. A top plate 20 having a substantially circular outer periphery and divided into a fan shape according to the number of owned main columns 14 is evenly arranged by disposing the divided parts on the upper parts of the main columns 14 and including the lower parts of the main columns 14. A bracket (2) 22 having sleeve portions at both ends is provided, and a bolt (3) 21 penetrating the sleeve portions of the top plate 20 and the bracket (2) 22.
2. A loading platform section c is provided which holds the relative positions of the main columns 14 and the top plates 20 provided on the main columns 14 by screwing the top plates 20 from above. The listed turntable.