JPS6025293B2 - Discharge port opening/closing device for powder transport vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an opening/closing device for a discharge port provided at the rear of a powder transport vehicle.

Conventionally, in a discharge port opening/closing device for a powder transport vehicle, the discharge port cover has one end hinged to the discharge port end and rotates downward around the hinge, so a large amount of space is required below. However, depending on the equipment for receiving powder and granular materials, such as plants, there are drawbacks such as the above-mentioned discharge port cover hitting the receiving equipment, and when closing the discharge port cover, labor is required to lift the discharge port cover upward. Ta.

The present invention has been made in view of the above-mentioned drawbacks, and includes a structure in which the discharge port cover can be opened and closed approximately horizontally using a parallel link mechanism.
In particular, the object of the present invention is to provide a powder and granular material transport vehicle which is provided with a rigid treading means of a parallel link mechanism so as to hold the discharge port cover in the closed position.

The present invention will be explained below based on examples.

Reference numeral 1 denotes a granular material transport vehicle, and a granular material storage tank 3 is mounted on a vehicle frame 2.

The granular material storage tank 3 is divided into a plurality of compartments 5--1 by a partition wall 4-1, and the granular material, such as cement, is introduced into each compartment 5-- through a manhole 6 formed in the upper wall. It is meant to accommodate.

On the other hand, a conveyance means such as a screw 7 is disposed in the longitudinal direction of the bottom of the powder storage tank 3, and the screw 7 is connected to a hydraulic motor 8 installed on the vehicle frame 2 in front of the storage tank 3. It is rotatably driven by a driving means such as the above, and conveys the powder and granular material in each compartment 5 of the storage tank 3 from the front to the rear. Further, at the rear end of the powder storage tank 3, there is connected a discharge port 9 for the powder and granules transported by the rotational drive of the screw 7, which is connected to a notch in the rear wall. It is now possible to supply powder and granules.

The discharge port 9 is formed in a funnel shape below the rear wall of the storage tank 3, and has a square pillar connected to its lower end that is slightly inclined backward, and a bracket 10 is fixed to the rear wall near the end of the discharge port. has been done.

Parallel link mechanisms 11 and 11' are connected to the shaft 12 on the left and right sides with appropriate spacing between the side wall of the outlet 9 and the bracket.
, 12', and the parallel link mechanism 11, 1
The end portion of the pond 1' is connected to a discharge port cover 13 that shields a lower end entrance of the discharge port 9, and is hooked 14, 14'. Further, in the bracket 101, a shaft 16 of the operating lever 5 is provided so as to be rotatable laterally, and a stopper 17 is integrally fixed to the shaft 16.

The tip of this stopper 17 is formed in a pot part 17a, and this copper part 17a is connected to one link 11 of the above-mentioned parallel link mechanism.
The link 11' is held by coming into contact with a pin 18 protruding from the link 11'. A bullet 19 is disposed between the substantially middle portion of the stopper 17 and the vehicle frame 2, and the bullet 19
is the parallel link mechanism 11, 11' and the stopper 1.
7 so that they are not easily disengaged due to vibration or the like, and are biased in a direction in which both are maintained at all times. On the other hand, the connecting shaft 12' of one link 11' of the parallel link mechanism
and the bracket 10, the shaft 12' is rotated counterclockwise,
That is, when the change spring 20 is biased in the direction of opening the discharge port cover 13 and the stopper 17 is disengaged from the pin 18 of one link 11', the swing 20 is released. The outlet lid is held in the open position by swinging force.

Reference numeral 21 denotes a handle provided at the end of the outlet cover 13, and the outlet cover 13 is closed via this handle.

22 is a rotation regulating piece for the stopper 17;
The stopper 7 is provided in a protruding manner to restrict rotation of the stopper 7 in the counterclockwise direction beyond a certain level.

Next, the effects of the present invention and the embodiments will be explained.

In the running state, the discharge port cover 13 is held in the closed position by the bullet 19 via the stopper 17, the pin 18, and the parallel link mechanisms 11, 11'. After the wheels arrive at a destination such as a plant and the receiving equipment side boat and the discharge port 9 are opposed, the operating lever 5, that is, the stopper 17 is moved to the shaft 1.
When the stopper 17 is rotated in the clockwise direction 6 against the biasing force of the bullet 19, the hook portion 17a of the stopper 17 is released from the pin 18 fixed to one link 11' of the parallel link mechanism. At the same time as the pin 18 separates from the stopper 17, the discharge port cover 13 is rotated by its own weight in the counterclockwise direction (rearward) of the shafts l2, 12' via the parallel link mechanisms 11, 11'. Furthermore, the axis 12 of one link 11' of the parallel links
A friction spring 20 interposed between ' and the bracket 10 acts in a direction to pull up the discharge port cover 13 suspended through the parallel link mechanisms 11 and 11' against its own weight. That is, when the discharge port cover 13 is closed, the discharge port cover 13 resists the force exerted by the imitation spring 20 to open the discharge port cover 13.
Although the shell 19 is opposed to maintain the closed state, when the discharge port cover 13 is released from the constraint of the bullet 19, the force exerted by the spring 20 has the ability to sufficiently lift the discharge port cover 13. Because of this, the outlet lid 1 is hanging down due to its own weight.
3 is pulled up to a position where its end is in contact with a part of the discharge port 9. In this state, when the shirt sleeve (not shown) is opened and the hydraulic motor 8 is driven to rotate, the screw 7 rotates so as to transport the powder and granular material in each compartment 5 from the front to the rear. In this way, the granular material can be supplied into the receiving facility from the discharge port 9. When the discharge operation is completed, the drive of the hydraulic motor 8 is stopped, and after closing the cover (not shown), the discharge port cover 13 is opened using the handle 21.
If you push it forward against the pressure, the parallel link mechanism 11,
11' rotates clockwise.

Along with this rotation, one link 1 of the parallel link mechanism
At 1', the grain pin 18 comes into contact with the stopper 17 whose further rotation is restricted by the rotation restriction piece 22. If the stopper 17 is then pushed in further, the pin 18 will fit into the hook 17a as the stopper 17 rotates, and at the same time the spring force of the bullet 19 will be applied to one link 11 of the parallel links.
'A clockwise force is applied to the axis 12' of '.
Due to the spring force of this bullet 19, the discharge port cover 13 is opened to the discharge port 9.
It is pressed so that it comes into close contact with the lower end, and the closing operation of the discharge port cover 13 is completed. As described above, according to the present invention, since the outlet cover moves approximately horizontally between the open position and the closed position,
It does not require any extra space below, and can be opened and closed in a more comfortable position than the conventional Shimonoseki method.

In addition, since the discharge port cover is opened simply by rotating the operating lever and closed by only the pushing operation of the discharge port cover, the work can be significantly reduced.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the powder and granular material transport vehicle, FIG. 2 is an enlarged side view showing the rear part of the vehicle, and FIG. It is a rear view of a figure. In the figure, 3 is a powder storage tank, 9 is a discharge port, 11, 11
' is a parallel link mechanism, 13 is a discharge port cover, 15 is an operating bar, 17 is a stopper, and 19 is a bullet. Figure 3 Ship's side plan N

Claims (1)

[Claims] 1. In a powder transport vehicle having a powder discharge port at the rear end of a storage tank mounted on a vehicle body, the vehicle moves between a position where the discharge port is opened and a position where the discharge port is closed. a parallel link mechanism pivotally supported at one end on the outlet cover and at the other end on the outlet side, the fixing mechanism of the outlet cover is configured to maintain the outlet cover in a normally closed position; A discharge port opening/closing device for a powder transport vehicle, characterized by having a locking means. 2. The lashing means is rotatably provided on the discharge port side,
A discharge port in a granular material transport vehicle according to claim 1, comprising a stopper that can be engaged with and disengaged from the parallel link mechanism, and a bullet that maintains an engaged state between the parallel link mechanism and the stopper. Switchgear. 3. The discharge port opening/closing device for a powder transport vehicle according to claim 1, wherein the parallel link mechanism is provided with a torsion spring for biasing the discharge port cover to the open position.