CN2095801U - Automatic open/close board for self unloading truck - Google Patents

Abstract

The utility model relates to an automatic open/close rear breast board for a self unloading truck. The upper parts of the both ends of the rear breast board are respectively fixed to a hinging arm. The rear breast board is hinged with a side rail by hinging ears on the hinging arm and hinging ears which are fixed on left and right side breast boards. The dead load of the rear breast board is utilized to create force moments for the center of a hinge and have open and close functions The utility model has the advantages of simple structure, high durability, and low cost; when closing, a device for locking the rear breast board does not need; the automatic open and close of the rear breast board is reliable; the automatic open/close rear breast board for a self unloading truck is not easy to damage.

Description

Automatic open/close board for self unloading truck

The utility model belongs to the vehicular transport field, but a kind of tip-up lorry tail board of automatic open close particularly.

Existing many dumping cars all have a cover to pin the device of tail board when cutting out, after the use of a period of time or external force make its produce distortion, tail board just can not be by locking, thereby puts to no little inconvenience to dumping car, and sets up this latching device and can increase productive costs and service expenditure.CN88201653,9 disclosed " dumping car tail board opening devices " are opened to enough height though have the tail board of making, with the outstanding advantage that is suitable for drawing off all kinds goods and tail board being closed, its complex structure, manufacturing cost height.

The purpose of this utility model is: design a kind of simple in structure, no latching device, low cost of manufacture, and can failure-free the dumping car tail board of automatic open close.

The utility model is achieved in that top, tail board two ends is fixed with hinge arms respectively, and hinged with the hinge lug and the side breast board that are fixed on the left and right sides breast board by the hinge lug on the hinge arms.During the dumping car loading, tail board closes up from trend both sides breast board and base plate and to be closed condition under the effect of its gravitational moment, and during unloading, railway carriage tilts to certain angle, and tail board and both sides breast board and base plate are opening.

The outstanding advantage of the utility model is, removed a cover locking device of former dumping car tail board, and structure is very simple, and automatic open close is reliable, and not fragile, it is cheap for manufacturing cost.

Describe in detail below in conjunction with a kind of embodiment of the present utility model.

Fig. 1 is the utility model closed condition scheme drawing;

Fig. 2 is the utility model birds-eye view;

Fig. 3 is the utility model opening scheme drawing.

As Fig. 1, shown in Figure 2, side at the body of tipper carriage afterbody, one end of hinge arms 5 is fixedly connected on tail board 2 upper ends, the other end of hinge arms 5 has hinge lug 6, upper end at side breast board 1, be fixed with hinge lug 4 accordingly, tail board 2 by hinge lug 4 and 6 and side breast board 1 hinged, opposite side at the body of tipper carriage afterbody, the same symmetry of tail board 2 pass through hinge lug and side breast board 1 is hinged, the length of hinge arms 5 wherein, promptly the hinge axle center is generally 15-23 centimetre to the distance of tail board 2, and the shape size of tail board 2 matches with the opening of compartment afterbody.During the dumping car loading, tail board 2 is drawn close from trend side breast board 1 and base plate 3 around hinged support under its action of gravity and is closed condition, at this moment, tail board 2 is embedded between the both sides breast board 1 and coincide on base plate 3, and is the trend of inside motion, like this, friction force between tail board 2 and the base plate 3 and the pressure between them, tail board 2 is clamped in the compartment, even load object in bulk in the compartment, object also far can not be pushed tail board 2 open to the pressure of tail board 2; When unloading thing, the angle of inclination, compartment increases gradually, the gravity direction of tail board 2 also gradually with hinged support on a perpendicular line, when the angle of inclination is maximum, tail board 2 and side breast board 1 and base plate 3 opening-like attitudes (referring to Fig. 3), the goods in the compartment promptly topples over from opening part.Wherein, the size and the locking situation of tail board 2 openings are relevant with the length of hinge arms, are advisable when the hinge brachium is 15-23 centimetre, and 19-21 centimetre is best.Can the self-opening tail board when this hinge arms length range is fit to the dumping car loading climbing maximum grade (30 °).

The utility model has removed all auxiliary devices that former dumping car opens and closes tail board, has saved raw MAT'L, has simplified manufacturing process, has saved service expenditure.Through using, the tail board automatic open close is flexible, and its reliability, applicability are strong, and durable in use, remarkable in economical benefits.

Claims (3)

1, a kind of tip-up lorry tail board that can automatic open close, it is characterized in that hinge arms 5 is arranged respectively at top, tail board 2 two ends, hinge lug 6 is arranged on the hinge arms 5, the upper end of left and right sides breast board 1 afterbody is fixed with hinge lug 4 accordingly, tail board 2 by hinge lug 4 and 6 and side breast board 1 hinged

2, tip-up lorry tail board according to claim 1 is characterized in that hinge arms 5 is long for 15-23 centimetre;

3, tip-up lorry tail board according to claim 1 is characterized in that the shape size of tail board 2 matches with dumping car afterbody opening, and when closing, tail board 2 is embedded between the both sides breast board 1, and coincide on base plate 3.