JPH0319456Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is a labor-saving cargo handling vehicle.More specifically, the present invention is a labor-saving cargo handling vehicle.More specifically, the loading platform is of a closed type and can be opened during cargo handling to facilitate the loading and unloading of cargo using various cargo handling equipment. This invention relates to a wing opening/closing device in a model car.

(Prior Art) FIG. 6 shows a rear view of the truck hood proposed in Utility Model Publication No. 54-2496, in which portal-shaped supports 51 are fixedly installed at the front and rear of the loading platform 50. A cross beam 52 extending in the longitudinal direction of the loading platform is installed between both supports 51, and a pair of canopy members 53, each having an approximately frontal shape and an approximately rectangular shape, are pivoted to the horizontal beams 52 so as to cover both sides of the loading platform 50, and furthermore, the hood member A rope 5 having a lever 54 protruding from each of the ropes 53 and tied to the tip of the lever 54.
A spring is installed between the hood member 53 and the support column 51 so that the hood member 53 is opened and closed by the pulling operation of step 5, and the biasing direction of the hood member 53 is reversed during opening and closing of the hood member 53. It is constructed by attaching a member 56, and the left and right hood members can be opened and closed by rope operation to open and close the sides of the loading platform.

However, even when the canopy member is fully opened, the sides of the cargo platform are only opened at an opening angle of nearly 90 degrees, making it possible to load and unload from the side of the cargo platform using forklifts, etc. It is limited to.

Further, since the spring member 56 works by urging the canopy member 53 to the same position in both the open and closed positions, the seating shock in both positions is large, and there is concern that this may affect the cargo.

Also, in the assembly type hood opening/closing mechanism for freight cars proposed in Japanese Patent Application Laid-Open No. 53-80619,
There is a problem in that cargo handling operations are limited to only from the sides of the cargo platform, and there is also concern about the impact on the cargo due to the sitting shock in the open position.

(Problems to be Solved by the Invention) The problems to be solved by the invention are to eliminate restrictions on cargo handling by making it possible to perform cargo handling operations from above the loading platform using a crane, etc. When closing from the open position beyond the vertical position of the center, it can be opened and closed relatively easily with the help of spring members, and the seating shock in both the open and close positions is made small to eliminate any impact on the cargo. It is to do so.

(Means for Solving the Problems) The means taken by the present invention to achieve the above-mentioned problems is to place the hinge of the large wing unevenly to one side in the left and right direction with respect to the cargo platform, and close the large wing. It is pivotably supported to open and close from the center beam to the open position vertically above the center of the loading platform, and between the center beam and the large wing, the large wing is attached from the closed position to the balanced state where the wing stands vertically above the loading platform. a spring member that urges the
A spring member is installed to urge the wing from the open position to the balanced state, and the large wing can be opened and closed by pulling a rope tied to the lever of the large wing with the assistance of both spring members. Features.

(Function) The large wing is urged by a spring member from the closed position to the balanced state and from the open position to the balanced state, respectively.
With a relatively light pulling operation using a rope, the large wing can be freely opened and closed from the closed position to a position beyond vertically above the center of the loading platform, that is, directly above the loading platform by a crane, etc., to an open position where cargo can be handled, directly above the loading platform, diagonally, or directly above the loading platform. Cargo handling is possible from the side.

(Example) An example of implementation of the present invention will be described in detail below based on the drawings.

The loading platform 1 of the vehicle A has a support 2 on the front edge of the loading platform surface 1a, and a support 3 on the rear edge thereof in a facing manner. The center beam 4 is installed unevenly on either the left or right side (the left side in the drawing).

Rotating shafts 5 and 6 are rotatably installed on the left and right sides of the center beam 4, and a large wing 7 consisting of a roof portion 7a and a side surface portion 7b is attached to the rotating shaft 5 from the center of the loading platform 1 from the closed position. A small wing 8 consisting of a small roof portion 8a and a side surface portion 8b is integrally pivoted to the rotating shaft 6 so as to be movable up and down. ing.

A spring member 9 is attached to the rotating shaft 5 so as to sandwich the vertical bone 7c of the large wing 7, which is coaxially and integrally connected to the rotating shaft 5.
10 are respectively attached in a winding manner.

The spring member 9 has one end 9a fixed to the bolt part 11 of the center beam 4 with a nut 12 so that its spring force can be adjusted, and the other end wound from the one end 9a in a left-handed manner around the rotating shaft 5. 9b is attached to the vertical frame 7c, and the spring member 9 in the form of a coil spring is tightened and uses the spring force generated to move the large wing 7 from the closed position to an equilibrium state where the wing stands vertically above the loading platform 1. The large wing 7 is energized to open to the open position to assist in relatively light manual opening of the large wing 7, and the large wing 7 is closed to the closed position in a buffered state.

The spring member 10 has one end 10a connected to the center beam 4
It is fixed to the bracket 13 with bolts 14 and nuts 15 with adjustable spring force, and the other end 10b, which is wound from one end 10a in a right-handed manner around the rotating shaft 5, is engaged with the vertical bone 7c. The spring member 10 in the form of a coil spring closes and urges the large wing 7 from the open position to the balanced state where the wing stands vertically above the loading platform 1 by the spring force generated by tightening the coil spring. This assists the manual closing operation of the large wing 7 to be performed relatively lightly, and also allows the large wing 7 to open in a buffered state to the open position.

Further, the spring force of both spring members 9 and 10 becomes zero in the balanced state where the large wing 7 is upright, and when the large wing 7 closes from the balanced state to the closed position, the strong force of the spring member 9 to be tightened is increased. The elastic recovery force and the slight elastic recovery force of the unwound spring member 10 are generated respectively, and both elastic recovery forces work to open the large wing 7 from the closed position to the equilibrium state. moves slowly to the closed position so that it reaches the closed position quietly. Further, when the large wing 7 opens from its balanced state to the open position, a strong elastic recovery force of the spring member 10 to be wound up and a slight elastic recovery force of the spring member 9 to be unwound are generated, so that both Due to the elastic recovery force, the large wing 7 slowly opens to the open position and reaches it quietly, and also closes from the open position to the equilibrium state.

The lever 16 provided at the front end and/or the rear end of the large wing 7 has its tip protruding to the opposite side of the rotating shaft 5, and a rope 17 is tied to this tip, and the rope 17 is pulled. By operation, the large wing 7 can be opened and closed from the closed position to the open position or from the open position to the closed position with the help of the spring members 9 and 10.

As a result, when the rope 17 is relaxed, the wing 7 is moved by the spring member 9, as shown in FIG.
It is closed in the closed position by its own weight which is slightly greater than the elastic recovery force of 10, and is locked closed with a stopper (not shown) to prevent it from opening by itself for safety.

Now, release the lock with the stopper and tighten the rope 17.
When the large wing 7 is pulled, the large wing 7 opens with the help of the elastic recovery force of the spring members 9 and 10, reaches an equilibrium state with a relatively light pulling force, and then quietly returns to the open position by its own weight as the rope 17 is pulled. It is opened in the open position (FIG. 4), and securing for safety in the open position is achieved by tying the rope 17 to a part of the loading platform.

Then, when the rope 17 is untied and pulled,
The large wing 7 moves beyond the equilibrium state from the open position with the help of the elastic recovery forces of the spring members 9 and 10, and then closes by itself due to its own weight and quietly closes to the closed position. (FIG. 5) In the above embodiment, the small wing 8 may also be opened and closed by the same operating means as the large wing 7, or it may optionally have a closed structure that cannot be opened or closed.

(Effect of idea) Therefore, the present invention has the following advantages.

The large wing overturns and opens to the open position above the vertical center of the loading platform, allowing for cargo handling from the side by forklifts as well as loading and unloading from directly above the loading platform using a crane without any hindrance. For example, it is possible to carry out cargo handling directly between ships and ships, and there are no cargo handling restrictions even though it is a van-type vehicle.

The opening and closing of the large wing is performed by both spring members biasing the large wing from the closed position to the balanced state vertically above the loading platform, or from the open position to the balanced state. The weight is substantially offset to zero by the elastic restoring force of the spring member, and the rope can be pulled with a relatively light pulling force, ie, human power.

Since the opening and closing movements of the large wing are buffered by both spring members, the seating shock to the open and closed positions is small, and the impact on the cargo caused by opening and closing can be kept to a minimum.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the wing opening/closing device of the present invention. Figure 2 is a rear view. Figure 3 is an arrow view. FIG. 4 is a longitudinal sectional view taken along the - line. FIG. 5 is a vertical sectional view taken along the - line. FIG. 6 is a rear view of the conventional device. In the figure, 1 is a loading platform, 2 and 3 are supports, 4 is a center beam, 7 is a large wing, 9 and 10 are spring members, 16 is a lever, and 17 is a rope.

Claims (1)

[Scope of utility model registration request] A center beam is erected between the front and rear supports of the loading platform, with the center beam biased to one side in the left-right direction, and a large wing with most of the roof is attached to the center beam, which can be opened and closed from a closed position to an open position exceeding vertically above the center of the loading platform. There is a spring member between the center beam and the large wing that biases the large wing in the opening direction from the closed position to an equilibrium state in which the wing stands vertically above the loading platform. A spring member is installed that biases in the closing direction from the position to the equilibrium state,
A wing opening/closing device for a labor-saving cargo handling vehicle in which a large wing can be opened and closed by pulling a rope tied to a lever of the large wing with the assistance of both spring members.