JPH1178870A - Suspended rotary wheel dolly for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate such work as inspection, repairing, replacing or the like on a fork by forming a suspension bar by fitting two cylindrical pillar materials in a telescope shape to be freely expanded/contracted, making the lower suspension bar freely rotatable and making the suspension angle of a dolly main body freely adjustable. SOLUTION: A pair of composite traveling rails 4 are provided in a high beam 6 located in a place for setting an automobile T to be inspected for repair, side carry rails 41 are provided in these rails and a wheel dolly is suspended so as to be freely moved back and forth and left and right. The upper end of a suspension bar 2 composed of two cylindrical pillar materials and freely expanded/contracted is connected to a suspension frame 1, and a dolly main body 3 composed of a frame body and a fork is attached to the lower end. The lower suspension bar is rotatable, and the dolly main body 3 seems to be freely rotated around the axis of the suspension bar 2. The dolly main body 3 is attached to the suspension bar 2 so as to be freely bent. Thus, such work as inspection or repairing of wheels on the dolly main body 3 is safely and surely carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel dolly mainly provided in an automobile maintenance work place.

[0002]

2. Description of the Related Art A suspension type wheel dolly is provided in an automobile maintenance work place or the like, and is used for checking or replacing wheels, brake drums, tires, and the like.

[0003]

A conventional suspension-type wheel dolly has a fork attached to the lower end of a wheel support, and is provided with a fork in a front-rear direction and a left-right direction along a traveling rail provided at a high place of a maintenance work area. (For example, Japanese Utility Model Laid-Open No. 6-804).
The above-mentioned conventional wheel dolly has a wheel support that is formed to be extendable and contractable, and can be moved in the front-rear direction and the left-right direction along a traveling rail provided at a high place in a maintenance work area. Therefore, the fork can be positioned at a predetermined position on the body of the automobile. However, the fork is formed so that it can be raised freely. ゝ The wheel support is always vertical, so it is not possible to increase the elevation angle with the wheel mounted on it, and the wheel support is formed in a ladder shape It is not possible to change the direction of the fork. Therefore, with this device, the workability of the wheels and the like placed on the fork is extremely poor, and the wheels and the like can be removed from the vehicle body. However, the work such as inspection and repair could hardly be performed. . SUMMARY OF THE INVENTION An object of the present invention is to provide a wheel dolly capable of facilitating operations such as inspection, repair, and replacement on a fork.

[0004]

According to the present invention, the suspension rod 2 of the wheel dolly is formed by using a cylindrical pillar. In particular, the suspension rod 2 is formed of two cylindrical pillars. (21, 22)
Is formed by telescopic fitting so that it can be extended and contracted, and the lower suspension rod 22 can be rotated relative to the upper suspension rod 21 so that the dolly body 3 attached thereto Was configured to be able to change the direction. Further, the above-mentioned conventional object is achieved by forming the hanging angle of the dolly body 3 freely with respect to the lower hanging rod 22.

[0005]

According to the present invention, the suspension rod 2 of the wheel dolly is formed by the upper suspension rod 21 and the lower suspension rod 22 and both are fitted in a telescope shape. Apparently expandable and contractible and rotatable. Therefore, the dolly body 3 attached to the hanging rod 2 can be set at an arbitrary height and can be oriented in an arbitrary direction.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a suspension rotary wheel dolly according to the present invention. In this embodiment, the suspension rotary wheel dolly comprises a suspension frame 1, a suspension rod 2, and a dolly body 3, and the suspension frame 1 is a double-sided rail 41 similar to a normal suspension wheel dolly. So that the traversing rail 41 is suspended by a double traveling rail 4 and travels in the front-rear direction along this. Has become. That is, in the maintenance workshop,
Beam girder 6 at a high place where the car T for maintenance inspection is installed
For example, a pair of compound traveling rails 4 are installed facing each other in parallel in the front-rear direction of the automobile T, and the traverse rails 41 are suspended respectively, and travel in the front-rear direction along the traveling rails 4. I do. The transverse rail 41 is oriented at right angles to the traveling rail 4 (laterally to the front-rear direction of the vehicle T), and a suspension rotary wheel dolly is suspended from the rail 41. Thus, the suspension rotary wheel dolly can move in any of the front, rear, right, and left directions. The traverse rail 41 is 500 to 1000
A suspension frame 1 is a frame-like body having a width of about 500 to 800 mm and a plurality of traveling wheels attached thereto. The swing of the suspension rod 2 is eliminated, and a constant vertical posture is always maintained. Although not shown, a locking plate is attached to an appropriate position of the suspension frame 1, and the suspension frame 1 is pressed against the traverse rail 41 by an air cylinder so that the suspension frame 1 can be moved to any position on the traverse rail 41. It can be fixed with. The suspension rod 2 is extendable and retractable, and the upper end is connected to the suspension frame 1 and the lower end is attached to the dolly body 3, so that the dolly body 3 can be set at a desired height. ing. In particular, in this embodiment, the suspension rod 2 is formed of two cylindrical pillars having different diameters, and the lower suspension rod 22 has the outer diameter of the upper suspension rod 21.
Is slightly smaller than the inner diameter of the upper suspension rod 21 and is loosely fitted to the upper suspension rod 21 in a telescopic manner. Therefore, the lower suspension rod 22 can be moved up and down, and the suspension rod 2 is apparently expandable and contractible. Further, the lower suspension rod 22 is loosely fitted to the upper suspension rod 21 so that the lower suspension rod 22 is rotatable, and the apparent dolly body 3 is rotated about the suspension rod 2 as an axis. It is free. The upper suspension rod 21 is provided with a hydraulic cylinder 51, and the lower suspension rod 22 is connected to the lower suspension rod 22 via a free joint so that the lower suspension rod 22 can be raised and lowered at a desired speed. It has become. In addition, a through-hole is formed in an appropriate position in a lower portion of the upper suspension rod 21, and a stopper pin 52 is attached thereto. The stopper pin 52 is connected to the air cylinder 53 via a transmission piece 54, and is configured to move forward and backward by operating the air cylinder 53. When the stopper pin 52 is advanced, the stopper pin 52 When the tip is pressed against the lower hanging rod 22 to fix it and stop the rotation, the lower hanging rod 22 is free and the dolly body 3 reaches the floor F and stops. Descend to In particular, a spring 55 is contracted between the transmission piece 54 and the air cylinder 53, and the stopper pin 52 is always provided with a forward tendency, so that it does not hinder the lifting and lowering and rotation of the lower suspension rod 22. Lower suspension rod with moderate strength
It touches 22. On the other hand, a stopper 23 is attached near the upper end of the lower suspension rod 22, and even if the lower suspension rod 22 is inadvertently lowered, when the stopper 23 reaches the position of the stopper pin 52, the lower suspension rod 22 22 is designed to shut down, ensuring operational safety.

The dolly body 3 comprises a frame 31 and a fork 32, and the fork 32 is attached to the lower frame 33 of the frame 31 substantially horizontally. The dolly body 3 is attached to the suspension rod 2 so as to be able to bend freely, so that the angle can be changed by about 30 degrees back and forth. Regarding the refraction mechanism, in this embodiment, the upper frame 34 of the frame 31 is formed using a tube,
On the other hand, the tubular body 24 is attached to the lower end of the lower suspension rod 22, and this portion is apparently formed in a ⊥ shape, and the upper frame 34 of the frame 31 of the dolly body 3 is fitted into the tubular body 24, thereby forming the frame 31. Can swing back and forth about the tubular body 24. An arm 35 protrudes behind the upper frame 34, and a hydraulic cylinder 56 is attached to the lower suspension rod 22.
, The arm 35 is turned up and down,
Thus, the dolly body 3 is rotated back and forth. The fork 32 can be pivoted upward about the mounting shaft 36, and can be folded upward when not in use. The lower frame 33 of the frame 31 is open at both ends, so that when the wheels are removed from the automobile T, the axles thereof can be stored therein.

[0008]

As described above in detail, according to the present invention, the suspension rod 2 of the wheel dolly is formed by fitting the cylindrical upper suspension rod 21 and the lower suspension rod 22 into a telescopic shape. The suspension rod 2 is apparently stretchable and rotatable. Dolly body 3 attached to hanging rod 2
Not only can be adjusted to any height, but also can be oriented in any direction, which makes it extremely easy to load and unload wheels etc. on the dolly body. There is an advantage that the inspection and maintenance work of the wheels and the like can be performed safely and reliably. Further, by forming the suspension angle of the wheel dolly main body 3 with respect to the suspension rod 2 so as to be freely adjustable, the above-described workability and safety are further promoted.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an example of a suspended rotary wheel dolly for an automobile according to the present invention.

FIG. 2 is a partially cutaway front view showing the hanging rod.

FIG. 3 is a front view showing an example of the dolly main body.

FIG. 4 is a partially cutaway side view showing an example of the same dolly main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suspension frame 2 Suspension rod 3 Dolly main body 4 Travel rail 21 Upper suspension rod 22 Lower suspension rod 23 Stopper 24 Tubular body 31 Frame body 32 Fork 33 Lower frame 34 Upper frame 35 Arm 36 Mounting axis 41 Lateral rail 51 Hydraulic cylinder 52 Stopper pin 53 Air cylinder 54 Transmission piece 55 Spring 56 Hydraulic cylinder

Claims (3)

[Claims] 1. A wheel dolly comprising a suspension frame, a suspension rod, and a dolly main body, wherein the suspension rod is formed by telescopically fitting a cylindrical upper suspension rod and a lower suspension rod. A lower wheel suspension dolly for automobiles, wherein the lower suspension bar is vertically movable and rotatable relative to the upper suspension bar. 2. A hanging angle of a dolly body with respect to a hanging rod is formed so as to be adjustable.
Car suspension rotary wheel dolly. 3. The suspension rotary type for an automobile according to claim 1, wherein the lower frame of the frame of the dolly body is formed using a cylindrical material, and both ends thereof are open. Wheel dolly.