JPH0732569Y2 - Trailer tamper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical field to which the invention belongs) The present invention relates to a towed tamper (vibration type ground compactor).

(Problems of the device and their characteristic points) For example, when moving the towed tamper on site without vibration, as when moving the tamper from the rolling yard that had been working until then to the next rolling yard. Require large traction and are very difficult to move.

The present invention is intended to solve the above-mentioned difficulties in moving a towed tamper on site without vibration, and its structural features are as described in the utility model registration claim. is there.

The towed tamper of the present invention keeps the wheels with tires on the both sides in the raised position during compaction work, and moves the tow metal up and down with respect to the body of the tamper to prevent the vibration of the tamper from being transmitted to the tow vehicle. Work in a state in which the tractor can be rotated in any direction, and during vibration-free movement, the towing bracket is fixed to the body of the tamper in a substantially horizontal state, and the wheels with tires are lowered to move the tamper to the towing bracket and the towing vehicle. It moves with the connecting part of and as a fulcrum in a floating state.

(Specific Description of the Invention by the Drawings) In the drawings showing one embodiment of the present invention, 1 is a tamper body, 2 is a compacting bottom plate, 3 is a vibrator, and 4 is a traction metal fitting.

The tow metal fitting 4 includes a cylindrical case 5 extending in the front-rear direction, and a pair of cross members 6 projecting from both sides of the base end of the cylindrical case 5.
And a pair of diagonal members 7 connecting the front part of the cylindrical case 5 and the tip of the cross member 6, and an adapter 8 fitted into the cylindrical case 5 and connected to the towing vehicle at the tip. The traction shaft 9 is provided, and the front end portions of the lateral members 6 on both sides are vertically rotatably attached to the front end portion of the main body 1 via the horizontal shaft 10.

At the center of both sides of the main body 1, a rotating arm 12 having wheels 11 with tires attached to the tips thereof and a hydraulic cylinder 13 are provided.
And the frame 14 to which the
The tip of the rod is connected to the tip of the rotating arm 12.

The wheel 11 with a tire reciprocates between an ascending position shown in the figure and a descending position projecting below the compaction bottom plate 2 by the operation of the hydraulic cylinder 13. At the ascending position, the tired wheel 11 is located on the side of the center of gravity of the tamper, In the lowered position, it is positioned slightly behind the center of gravity of the tamper.

A locking device operated by a hydraulic cylinder 15 is provided at the center of the front part of the main body 1 in the lateral direction (the position behind the cylindrical case 5).
16 is provided, and by engaging the Y-shaped metal fitting of the lock device 16 with the pin 17 provided at the tail end of the cylindrical case 5,
The tow metal fitting 4 is integrally fixed to the main body 1 in a substantially horizontal state.

At the time of compaction work, as shown in the drawing, the wheel with tire 11 is held in the raised position and the lock device 16 is released. Then, at the time of non-vibration movement, the locking device 16 is operated to keep the tow metal fitting 4 in a substantially horizontal state.
After integrally fixing it with the hydraulic cylinder 13, the arm 12 is pushed down by the hydraulic cylinder 13 to lower the tired wheel 11, and the main body 1 is lifted with the connecting portion between the adapter 8 and the towing vehicle as a fulcrum. When the tamper is towed in this state, there is little traction resistance, it is possible to move with a small traction force, and the turning is smooth.

When connecting a towing vehicle to the towing bracket 4, conventionally, the front part of the towing bracket 4 was lifted by a crane to lift the adapter 8 to the position of the drawbar of the towing vehicle. Further, by using the lock device 16 to bring the tow metal fitting 4 into a substantially horizontal state, the connection can be easily performed without using a crane.

(Advantages of the Invention) Since the present invention is as described above, in addition to the advantage that the tamper can be smoothly moved without vibration with a small traction force, the work of connecting the tamper to the towing vehicle is easy. It also has the advantage that it contributes to the improvement of the workability of the towed tamper.

[Brief description of drawings]

1 is a side view and FIG. 2 is a cutaway perspective view of an embodiment of the present invention. 1: Main body, 2: Compaction bottom plate, 3: Vibration machine, 4: Traction metal fittings, 5: Cylindrical case, 6: Cross member, 7: Oblique member, 8: Adapter, 9: Traction shaft, 10: Horizontal shaft, 11: Wheel with tire, 12: Arm, 13: Hydraulic cylinder, 14: Frame, 15: Hydraulic cylinder, 16: Lock device, 17: Pin.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryuji Hashimoto 1-2-1 Taito, Taito-ku, Tokyo Fudo Construction Co., Ltd. (72) Toshihisa Taniguchi 1-2-1 Taito, Taito-ku, Tokyo Fudou Giken Co., Ltd. Inside the company (72) Inventor Kimihiro Aso 2-5-8 Kita-Aoyama, Minato-ku, Tokyo In-house (72) Inventor Shunsuke Machi 2-5-8 Kita-Aoyama, Minato-ku, Tokyo Aoyama Machinery Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A towed tamper in which a base end of a tow metal is connected to a front end of the main body so as to be rotatable in the vertical direction. And a lock device for integrally fixing the tow metal fitting to the main body in a substantially horizontal state, and a hydraulic cylinder device for operating the lock device. A towed tamper characterized by the provision of.