JP2008179376A - Vehicular tank, and bulk vehicle for transport of powder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular tank which facilitates cleaning of a section at which a hatch is formed and a mounting section between a residual air discharging pipe and the vehicular tank. <P>SOLUTION: This vehicular tank for a bulk vehicle for the transport of powder loads a bulky powder inside, and transports the powder. The vehicular tank includes a raised section 30 which is formed by the drawing process on the peripheral edge part of the hatch 14 provided on the top surface of the vehicular tank, and a short pipe member 32 which is in contact with and welded to the raised section 30. At the same time, the vehicular tank includes a short pipe, one end part of which is approximately vertically welded to the upper surface of the rear end of the vehicular tank 12, a bent pipe, one end part of which is fitted to the other end part of the short pipe, and a residual air discharging pipe, one end part of which is fitted to the other end part of the bent pipe. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an in-vehicle tank for a bulk vehicle for transporting powder loaded with edible powder such as milled wheat flour, a method for manufacturing an in-vehicle tank for a bulk vehicle for transporting powder, and a powder equipped with the in-vehicle tank. The present invention relates to a bulk transport vehicle.

  When transporting bulk powders, for example, edible powders such as milled flour (hereinafter described as an example of wheat flour) from a mill to a customer's processing factory such as a bread factory, Had packed the flour in a 25kg-packed bag, etc., and then transported the packed flour by truck. Increasingly, the flour is loaded and loaded into an on-board tank of a tank truck while being in bulk form, and the flour loaded on the on-board tank is transported. A tank truck that transports such bulk powder is referred to as a bulk vehicle.

  This bulk car transport allows you to transport the flour without bagging and deliver it directly to the silo (storage tank) of the customer's processing plant. In recent years, this method of transportation has been widely used because it can be transported and the bagging process at the milling factory and the removal work from the bag at the customer's processing factory are no longer necessary. It has been.

  The bulk car for transporting the bulk flour is, for example, a bulk car 130 as shown in FIG. 5, and the flour is loaded on the on-vehicle tank 132 of the bulk car 130 and transported. In FIG. 5, both the method of putting flour into the on-vehicle tank 132 of the bulk car 130 at the mill and the method of discharging flour at the customer's factory are drawn simultaneously. That is, when the flour is put into the bulk car 130 at the mill, for example, the flour milled at the mill is conveyed to the second floor as a loading place, and the bellows is placed on the in-vehicle tank 132 of the bulk car 130 parked on the first floor. It is naturally dropped through the transfer tube 134 and is loaded into the in-vehicle tank 132 of the bulk car 130 and loaded.

  In the loading of the flour, the flour is fed from the two feeding hatches 136 on the front side and the rear side provided on the upper surface of the in-vehicle tank 132 of the bulk car 130 by, for example, two bellows-shaped transfer tubes 134. The air is vented from the central input hatch 136. Without being limited to this example, any of the input hatches 136 may be used as appropriate for the input and ventilation of the flour. In addition, when the flour is discharged into the silo at the customer's factory, it is discharged from the discharge port 138 of the discharge hatch 137 and is transported to the silo by pneumatic transport through the transport tube 140. At this time, a hydraulic cylinder (not shown) pushes up the front part of the on-vehicle tank 132 to tilt the on-vehicle tank 132, and drives a compressor mounted on the bulk vehicle 130 or a compressor (not shown) installed at a customer factory. The compressed air generated is introduced into the upper part of the front end of the onboard tank 132 to pressurize the inside of the tank, and air is blown out from the fluidized plate placed inside the discharge hatch 137 to fluidize the flour inside the discharge hatch. And discharged from the discharge port 138 (see Patent Document 1).

Here, when the flour is discharged from the in-vehicle tank 132, air is sent into the in-vehicle tank 132 to apply a predetermined pressure in the in-vehicle tank 132. When the discharge of the flour is finished, the discharge port 138 of the discharge hatch 137 is closed. However, since air having a predetermined pressure remains in the vehicle-mounted tank 132, the pressure in the vehicle-mounted tank 132 is reduced to the normal pressure. It is necessary to return to the state. Therefore, as shown in FIG. 6 when the vehicle-mounted tank 132 is viewed from the rear, the vehicle-mounted tank 132 is equipped with a residual air discharge pipe 150 for discharging residual air via the bent pipe 152.
JP 2004-99147 A

  In the above-described bulk car, the hatch 136 formed on the upper part of the on-vehicle tank 132 has a structure in which a short pipe member is inserted into a pilot hole provided on the upper body plate constituting the upper part of the on-vehicle tank 132. A corner is formed in the portion of the inner wall of the in-vehicle tank 132 where the short pipe member and the upper shell plate are connected, and it is difficult to peel off the flour adhering to this portion and clean it. It was also difficult to confirm whether or not Further, as shown in FIG. 7, the residual air discharge pipe 150 is attached to the bent pipe 152 welded directly to the upper part of the on-vehicle tank 132 by the clamp 154, so that the flour adheres to the inside of the bent pipe 152. In this case, it is difficult to clean the inside of the bent tube 152 and confirm the cleaning status.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an in-vehicle tank for a powder transport bulk vehicle capable of easily confirming a cleaning and a situation where a hatch is formed and a portion where a residual air discharge pipe is mounted, and the powder transport bulk vehicle. And a bulk vehicle for transporting powder equipped with the in-vehicle tank.

  An in-vehicle tank of a bulk vehicle for powder transportation according to the present invention is an in-vehicle tank of a bulk vehicle for powder transportation in which a bulk powder is loaded and transported, and is a hatch provided on an upper surface of the in-vehicle tank. One end with respect to the rear surface of the rear end of the in-vehicle tank, a standing part formed by drawing at the peripheral part of the tank, a short pipe member welded to the outer peripheral part of the standing part in contact with the inner peripheral part, and A short pipe whose part is welded substantially vertically, a bent pipe whose one end is attached to the other end of the short pipe by a clamp, and residual air whose one end is attached to the other end of the bent pipe by a clamp And a discharge pipe.

  The method for manufacturing an in-vehicle tank for a bulk vehicle for powder transportation according to the present invention is a method for manufacturing an in-vehicle tank for a bulk vehicle for powder transportation in which bulk powder is loaded and transported. A curvature applying step for applying a predetermined curvature in a direction intersecting the longitudinal direction to the upper body plate constituting the tank, and a pilot hole for forming a prepared hole of a predetermined size in the upper body plate provided with the predetermined curvature A forming step, a standing portion forming step for forming a standing portion by drawing at a peripheral portion of the pilot hole, and a welding step for welding the inner peripheral portion of the short pipe member in contact with the outer peripheral portion of the standing portion. It is characterized by including.

  Moreover, the bulk vehicle for powder transportation of the present invention is equipped with the on-vehicle tank of the present invention.

  According to the on-vehicle tank of the bulk vehicle for powder transportation of the present invention, the hatch portion provided on the upper surface of the on-vehicle tank includes a standing portion formed by drawing processing on a peripheral portion of the hatch, and an outer peripheral portion of the standing portion. And a short pipe member welded in contact with the inner periphery of the tank, and a short pipe whose one end is welded substantially perpendicularly to the upper surface of the rear end of the in-vehicle tank, and the other end of the short pipe Are provided with a bent pipe whose one end is attached by a clamp, and a residual air discharge pipe whose one end is attached by a clamp to the other end of the bent pipe. Cleaning of the portion to be mounted and confirmation of cleaning can be easily performed. That is, in the conventional in-vehicle tank, the flour adheres to the corner where the upper shell plate and the short pipe member are in contact with each other in the in-vehicle tank, and cleaning is difficult. Since a standing portion formed by drawing is provided at the peripheral portion of the rim and there is no corner, cleaning and confirmation of cleaning can be easily performed. Furthermore, since the bent pipe is welded to the conventional vehicle-mounted tank, it is difficult to clean the inside of the bent tube and confirm the cleaning status. Since the short pipe is welded vertically, there is no portion with poor visibility, and the inside of the short pipe can be easily cleaned and the cleaning status can be confirmed.

  Moreover, according to the manufacturing method of the vehicle-mounted tank of the bulk vehicle for powder transportation of this invention, the vehicle-mounted tank which can perform the cleaning of a hatch part and confirmation of cleaning easily can be manufactured.

  Further, according to the bulk vehicle for powder transportation of the present invention, the standing portion formed by drawing is provided at the peripheral portion of the hatch of the in-vehicle tank equipped in the bulk vehicle for powder transportation, and the corner portion does not exist. In addition, since the residual air discharge pipe is attached via a short pipe having a straight shape welded to the vehicle-mounted tank, cleaning and cleaning confirmation can be easily performed.

  Hereinafter, an in-vehicle tank of a powder transport bulk vehicle according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing the configuration of a powder transport bulk vehicle according to an embodiment of the present invention.

  The bulk transport vehicle 10 shown in FIG. 1 is a tank truck for transporting bulk flour as described above, and is provided with an in-vehicle tank 12 for storing flour at the top of the vehicle body. Flour is supplied and loaded from two front and rear hatches (input hatches) 14 provided on the upper surface of the vehicle-mounted tank 12. At this time, the hatch (air vent hatch) 14 provided between the hatches 14 into which the flour is introduced is opened, and the air sent along with the flour is vented. In addition, the hatch 14 into which the flour is introduced is not limited to the two front and rear hatches, and any hatch 14 may be used as the input hatch depending on the form of the loading factory. For example, the front and center hatches 14 may be input hatches, the rear hatch 14 may be an air release hatch, the center and rear hatches 14 may be input hatches, and the front hatch 14 may be an air release hatch.

  Further, when discharging the flour from the in-vehicle tank 12, the front portion of the in-vehicle tank 12 is pushed up by a hydraulic cylinder (not shown) so that the flour does not remain in the in-vehicle tank 12, and the in-vehicle tank 12 is tilted to 10, or a compressor installed in a loading factory (both not shown) is driven, and the generated compressed air is introduced into the upper front end of the vehicle-mounted tank 12 to pressurize the inside of the tank. A discharge port for fluidizing the flour inside the discharge hatch 16 by jetting the flow air supplied from the side wall through a flow air pipe (not shown) from a flow plate (not shown) arranged inside the discharge hatch 16 Eject from 17.

  FIG. 2 is a diagram showing a procedure for cutting the aluminum body plate of the in-vehicle tank 12. As shown in FIG. 2, the body of the in-vehicle tank 12 includes an upper body plate 20 and side body plates 22 and 24 that extend in the vehicle front-rear direction, and the hatch 14 is provided on the upper body plate 20 of the in-vehicle tank 12. It is formed at predetermined intervals in the vehicle longitudinal direction.

  FIG. 3 is a cross-sectional view in the vehicle width direction at a position passing through the center of the hatch. The hatch 14 provided on the upper surface of the in-vehicle tank 12 is welded with a circumferential standing portion 30 formed by drawing at a peripheral portion thereof and an inner peripheral portion in contact with an outer peripheral portion of the standing portion 30. The short tube member 32 is provided. That is, the portion 34 that continues from the inner wall surface of the upper body plate 20 of the in-vehicle tank 12 to the standing portion 30 has a surface shape having a predetermined curvature, for example, a curvature radius R = 20 mm. Therefore, even when flour adheres to this portion, cleaning and confirmation thereof can be easily performed. The predetermined curvature is not limited to the curvature radius R = 20 mm or the like, and may be any curvature that has a surface shape having no corners. The radius of curvature is preferably R = 10 to 30 mm.

  FIG. 4 is a diagram showing a state in which the residual air discharge pipe 46 is mounted in the in-vehicle tank according to the embodiment. As shown in FIG. 4, one end of the short tube 40 is welded to the vehicle-mounted tank 12 substantially perpendicularly to the upper surface of the rear end of the vehicle-mounted tank 12, and to the other end of the short tube 40. One end of the bent pipe 44 having an L-shape is attached by a clamp 42, and one end of a residual air discharge pipe 46 is connected to the other end of the bent pipe 44 by the clamp 42. Note that a discharge valve (not shown) is connected to the tip of the residual air discharge pipe. By operating the discharge valve, the air remaining in the in-vehicle tank 12 can be discharged to the outside or the external air can be taken in. Done.

  Here, as shown in FIG. 4, the short tube 40 is welded substantially perpendicularly to the upper surface of the rear end of the in-vehicle tank 12, and has a linear shape. There is no portion with poor visibility like the bent pipe (see FIG. 7). Therefore, when the residual air discharge pipe 46 and the bent pipe 44 are removed from the in-vehicle tank 12, only the short pipe 40 having a linear shape is welded to the in-vehicle tank 12, and therefore the inside of the short pipe 40 is cleaned. And the situation can be easily confirmed. It should be noted that a curved surface with an appropriate curvature should be adopted at the welded portion of the short pipe 40 and the vehicle-mounted tank 12.

  Next, the manufacturing method of the vehicle tank for powder transportation which concerns on embodiment of this invention is demonstrated. First, the predetermined curvature of the direction which cross | intersects a longitudinal direction is provided by roll-bending the upper trunk | drum 20 which comprises the vehicle-mounted tank 12 (curvature provision process). Then, three circular pilot holes of a predetermined size are formed on the upper body plate 20 provided with a predetermined curvature at predetermined intervals in the vehicle front-rear direction (prepared hole forming step).

  Next, a circumferential standing portion 30 is formed by drawing using a press machine with a pair of upper and lower dies at the peripheral portion of each prepared hole formed in the upper body plate 20 (standing portion forming step). . And the inner peripheral part of the short pipe member 32 contacts the outer peripheral part of the standing part 30, and is welded, The length of the standing part 30 is extended (welding process). Thereafter, the side body plates 22 and 24 are welded to the upper body plate 20 to form the body portion, and the front portion of the tank is welded to the front portion of the tank, and the rear portion of the tank is welded to the rear portion of the body portion. To manufacture. In addition, the vehicle-mounted tank 12 manufactured in this way is mounted in a vehicle, and a bulk vehicle for powder transportation is manufactured.

  According to the on-vehicle tank manufacturing method for a bulk vehicle for powder transportation according to the present embodiment, it is possible to manufacture an on-vehicle tank that can easily clean the hatch portion and confirm the cleaning.

  In addition, according to the powder transportation bulk vehicle according to the embodiment of the present invention, the standing portion formed by drawing processing is provided on the peripheral portion of the hatch of the in-vehicle tank equipped in the powder transportation bulk vehicle, There are no corners, and when mounting the residual air discharge pipe to the on-vehicle tank, it is only a short pipe with a straight shape that is welded to the on-vehicle tank. Can do.

It is a figure which shows the structure of the bulk vehicle for powder transportation concerning embodiment of this invention. It is a figure for demonstrating the trunk | drum of the vehicle-mounted tank concerning embodiment of this invention. It is sectional drawing for demonstrating the structure of the hatch of the vehicle-mounted tank concerning embodiment of this invention. It is a figure for demonstrating the mounting state of the residual air exhaust pipe to the vehicle-mounted tank concerning embodiment of this invention. It is a figure which shows the structure of the conventional bulk vehicle for powder conveyance. It is a figure for demonstrating the mounting state of the residual air discharge pipe to the conventional vehicle-mounted tank. It is a figure for demonstrating the mounting state of the conventional residual air discharge pipe.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Bulk car for powder transport, 12 ... Car tank, 14 ... Hatch, 16 ... Discharge hatch, 17 ... Discharge port, 20 ... Upper body plate, 22, 24 ..Side body plate, 30... Standing portion, 32... Short pipe member, 34... ... bent pipe, 46 ... residual air discharge pipe.

Claims (3)

It is an in-vehicle tank for a bulk vehicle for powder transportation that carries bulk powder inside and transports it,
An upright portion formed by drawing on the peripheral edge of the hatch provided on the upper surface of the in-vehicle tank;
A short pipe member welded to the outer peripheral portion of the standing portion in contact with the inner peripheral portion; and
A short pipe whose one end is welded substantially perpendicularly to the rear end upper surface of the vehicle-mounted tank,
A bent tube having one end mounted by clamping to the other end of the short tube;
An in-vehicle tank for a bulk vehicle for powder transportation, comprising: a residual air discharge pipe having one end attached to the other end of the bent pipe by a clamp. A method for manufacturing an in-vehicle tank of a bulk vehicle for powder transportation in which bulk powder is loaded and transported,
A curvature applying step for applying a predetermined curvature in a direction intersecting the longitudinal direction to the upper body plate constituting the vehicle-mounted tank;
A pilot hole forming step of forming a pilot hole of a predetermined size in the upper body plate provided with a predetermined curvature;
A standing part forming step of forming a standing part by drawing on the peripheral edge of the prepared hole;
A method for manufacturing an on-vehicle tank for a bulk vehicle for powder transportation, comprising: a welding step of welding an inner peripheral portion of a short pipe member in contact with an outer peripheral portion of the standing portion.   A bulk vehicle for transporting powder, comprising the on-vehicle tank according to claim 1.

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