JPH0222167B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a manually guided, self-propelled road tamping plate, the running direction of which can be controlled by a manually operable switching mechanism. related to things.

BACKGROUND OF THE INVENTION Known road tamping plates are guided by an operator using steering bends or steering bars. The steering rod is attached to the upper mass and carries a switching mechanism for forward and reverse travel. In this configuration, the operator moves close to the equipment and thus into the exhaust gas, dust, and hazardous area. Additionally, the operator is often prevented from guiding the device due to topographical conditions. An example of this is when tamping operations are carried out in trenches.

Some known devices, such as the applicant's tamping plate
In the DPU, a switching mechanism is provided to transmit the steering force, and is movable approximately parallel to the direction of travel between a position for forward travel and a position for backward travel, and It is immobile in the direction perpendicular to the direction. The purpose of such a configuration is that the operator does not have to change his/her grip on the steering mechanism of the device between the switching mechanism and the steering rod or steering curved grip portion in order to change the running direction of the device. .

Problem to be Solved by the Invention It is an object of the present invention to enable a road tamping plate of the type mentioned at the outset to be controlled by an operator from a position significantly distant from the road tamping plate in almost any direction. It is to be configured as follows.

Means for Solving the Problems The means of the present invention for solving the above problems are as follows:
(a) A switching mechanism disposed on the steering curved piece or steering bar, etc., is provided for transmitting steering force and is approximately parallel to the direction of travel;
displaceable between a position for forward travel and a position for backward travel and substantially immobile in a direction perpendicular to the direction of travel; (b) capable of transmitting tensile and pressing forces; (c) a combination of (a) and (b) above;

Embodiment According to the embodiment defined in claim 2, the length of the rod is variable in a nested manner. This allows a remote operation that is well adapted to different conditions of use.

According to an advantageous embodiment of claim 3, the rod is damped against the switching mechanism near its end facing the switching mechanism. This damping, in conjunction with the weight of the bar, has the effect of sufficiently damping vibrations of the device for the operator.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawing, only the switching mechanism 1 of the road tamping plate is shown. The switching mechanism 1 is constructed as a solid lever in the shape of a plow grip, and the lever is positioned between stops for forward travel and backward travel parallel to the travel direction about an axis perpendicular to the travel direction. is displaceable between positions for
Moreover, the steering force is transmitted to the steering curve or to the steering bar. The lever is attached to the steering wheel bar or steering wheel.

The road tamping plate comprises, in a known manner, a road contact plate and an upper mass which is damped relative to the road contact plate and carries a drive, the road contact plate having a switchable structure for forward and backward movement. A vibrator with possible vibration directions is arranged, and a steering arm or a steering bar is fastened to the upper mass, optionally with vibration damping.

The switching mechanism 1 has an effective lever arm length R measured from the pivot axis of the steering rod and has an upper, laterally extending grip portion (which in conventional road tamping plates is not held directly by the operator). The holder 2 is held in the The holder is rigidly fixed to the grip part. The holder 2 also constitutes a fork-shaped part for the shaft 3 with its leg 2a pointing upwards in the operating position of the strapping device. A steering head 5 is supported on the shaft 3 by means of a spherical joint 4 so as to be movable in all directions.

In the steering head 5, a relatively long rod 8 capable of applying a tensile force and a pressing force is attached to a rubber damper 6 and a connecting piece 7.
The rod 8 is welded to the connecting piece 7. For clarity, the rod 8 is shown upwards in the drawing, perpendicular to the device. Bar 8
can take this position, but it is not the normal position of use. In the normal position of use, the rod 8 extends at any angle in either direction with respect to the vertical axis 9 as seen in the plane of the drawing, and the end of the rod 8 on the holder side is used when the device is driven forward or backwards. Depending on whether it is driven, it is held by the operator in front or behind the shaft 3 as seen in the plane of the drawing in FIG. 2, so that a force in the switching direction depending on the desired direction of movement is applied to the switching mechanism
exerted on.

In this embodiment, the spherical joint 4 allows the steering head 5 only a degree of freedom of movement of approximately 45 DEG relative to the vertical axis 9 in the plane of the drawing which includes the vertical axis 9. Further freedom of movement of the rod 8 can be obtained from the rubber damper 6 if required. The rubber damper 6 also acts as a vibration damper and protects the rod 8 from the device vibrations that the holder 2 is accompanied to some extent. By using the rod 8 connected to the switching mechanism 1 as described above, the operator of the switching mechanism can apply the same force to the switching mechanism from a remote location as conventionally applied directly by hand for steering and controlling the traveling direction. 1, in which case the steering force is transmitted via the switching mechanism 1 directly to the steering bend or the steering bar, and at the same time the switching mechanism 1 is always in the switching position giving the desired direction of movement of the device. Hold.

It is advantageous if the rod 8 consists of two parts that can be slid in a telescoping fashion relative to one another and that can be fixed, so that the length of the rod 8 can be adapted to the particular conditions of use of the device.

Effects of the Invention By combining the configuration of the switching mechanism described in (a) with the rod attached as described in (b), it is possible to directly grasp the steering curved piece or the steering bar in the same way. A simple, failure-prone, and highly functional design that allows the operator to subtly, yet virtually all directions around the device, steer the road tamping board and control it with respect to the direction of travel. You get remote control. The operator himself moves outside the exhaust gas-, dust-, and hazardous area, and can easily avoid obstacles that would otherwise seriously impede the operator's operation of the equipment due to his position relative to the equipment. can. In particular, the bar allows different vertical positions with respect to the working device and the steering operator, which is particularly important when tamping operations are carried out in trenches (because the operator must steer the device from outside the trench). This has proven particularly useful when the operator has an obstacle ahead of him that he can jump over, but not around (because he can do it), or over it, but not around it.

[Brief explanation of drawings]

Fig. 1 is a view of the important part of the road tamping board for the present invention, viewed from the front in a direction parallel to the running direction;
FIG. 2 is a side view of FIG. 1. DESCRIPTION OF SYMBOLS 1... Switching mechanism, 2... Holder, 2a... Leg, 3... Shaft, 4... Spherical joint, 5... Steering head, 6... Rubber damper, 7... Connection piece, 8...
...Bar, 9...Vertical axis.

Claims (1)

[Scope of Claims] 1. A manually guided, self-propelled road tamping plate whose running direction can be controlled by a manually operable switching mechanism, which includes: (a) a steering curved piece; Alternatively, a switching mechanism 1 disposed on a steering rod or the like is provided for transmitting the steering force, and the switching mechanism 1 is provided to transmit steering force, and the switching mechanism 1 is arranged substantially parallel to the direction of travel between a position for forward travel and a position for reverse travel. (b) The rod 8, which is movable in almost all directions and is substantially immobile in a direction perpendicular to the running direction, and is suitable for transmitting tensile force and pressing force, is connected to the switching mechanism 1 so as to be movable in almost all directions. (c) A manually guided, self-propelled road surface tamping board, which is installed and is characterized by a combination of (a) and (b) above. 2. The road surface tamping plate according to claim 1, wherein the length of the rod 8 is variable in a nested manner. 3. The road surface tamping plate according to claim 1 or 2, wherein the rod 8 is buffered with respect to the switching mechanism near the end on the switching mechanism 1 side.