JPH026704B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tank truck capable of loading liquid contents from the bottom of the tank.

Generally, when loading liquid content such as gasoline or diesel oil into a tank truck, the loading operation is performed by inserting the tip of a loading pipe into an injection port provided on the top of the tank. In this case, due to work such as opening and closing the inlet and inserting the tip of the loading pipe into the inlet,
It is necessary for the worker to ascend and descend to the upper surface of the tank, which is not favorable from the viewpoint of work safety, and also requires time to ascend and descend, resulting in poor work efficiency. For this reason, the bottom loading method (loading from the bottom of the tank), which eliminates the need for workers to climb to the top of the tank and allows loading operations from the ground, has been used in some foreign countries; In the bottom loading method, a bottom valve is installed at the bottom of the tank, a discharge hose is detachably connected to the tip of a pipe that communicates with the bottom valve, and this pipe is branched to attach and detach the loading hose. A freely connectable on-off valve was provided to carry out loading and discharging operations. However, with this method, the liquid content accumulates in the piping during loading, so the vehicle is driven with dangerous substances such as gasoline accumulating in the piping, which can be easily damaged by collisions, etc., which is not desirable in terms of stability. For this reason, it was not even legally recognized in Japan. In addition, the content liquid is measured using a measuring scale installed inside the tank chamber, but this scale does not include the volume inside the piping, so the content liquid is loaded from the loading hose through the flow meter. The problem was that the amount could be inaccurate due to an error equal to the volume of the piping between the gauge in the tank and the flowmeter used for loading.

The present invention provides an opening that opens laterally at the bottom of a tank formed in an arcuate cross-section, and a concave member having a vertical end plate at its inner end is sealed and fixed inside the tank by surrounding this opening. An on-off valve that communicates with the inside of the tank is provided on the outside of this end plate inside the concave member, and a loading hose is detachably connected to this on-off valve to prevent collisions and the like during loading. Therefore, there is no need to use piping that is easily damaged due to the loading process, and there is no need to drive with dangerous substances accumulated in the piping during loading.Moreover, this on-off valve is housed inside the tank and comes into contact with external interference. ,
There is no risk of damage and safe travel can be ensured.Also, since the contents do not accumulate in the piping, the loading flow meter and the gauge scale inside the tank chamber match and are accurate. The purpose of the present invention is to provide a tank truck that can carry out accurate weighing and can therefore implement a bottom loading method that eliminates the above-mentioned drawbacks, thereby improving work safety and efficiency. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 10, a tank 1 is mounted on a frame 5 of a chassis 3. In FIGS. tank 1
The tank chambers 9, 9,... are separated by the partition walls 7, 7,...
It is divided into. Ladders 11 and 13 for raising and lowering are fixed to the front and rear sides of the tank 1. Each tank chamber 9 is provided with a manhole 15 having an inlet 14 at the top and a bottom valve 17 at the bottom. A pipe 19 communicates with the bottom valve 17, a discharge valve 21 is provided at the end of the pipe 19 so as to be freely openable and closable, and a discharge hose 23 is connected in a detachable manner. The bottom of the tank chamber 9 is formed in an arc shape,
An opening 25 is provided, and surrounding this opening 25, a concave member 29 having an end plate 27 at one end is provided hermetically fixed to the inner surface of the tank. An on-off valve 31 is housed in a concave member 29 and fixed to the outside of the end plate 27, and communicates with the inside of the tank chamber 9. An on-off valve 35 provided at the tip of a loading hose 33 is detachably connected to the on-off valve 31 . The on-off valve 31 is constructed as follows. That is, the main body case 41 is fixed to the flange portion 39 fixed to the end plate 27 by bolts 37, 37, and the inside is communicated with the tank chamber 9 through the communication hole 43 provided in the end plate 27. ing. An engagement tube 45 is fixed to the end of the main body case 41, and a locking piece 4 is attached to the end of the engagement tube 45.
7, 47, . . . are provided protruding from the outer periphery.
A valve seat 49 is provided inside the engagement cylinder 45, and a valve body 51 contacts the valve seat 49 so as to be openable and closable. A valve stem 53 that is integrated with the valve body 51 is slidably supported in the axial direction by a bearing portion 55 that is provided inside the main body case 41, and a spring 57 presses the valve body 51 against the valve seat 49. It is biased in the direction of closing. The on-off valve 35 is constructed as follows. That is, the loading hose 3
One end of a main body case 61 of the on-off valve 35 is screwed into a base 59 that fits into one end of the on-off valve 35 . A cylindrical body 65 is fixed to the other end of the main body case 61 and fixes an annular seal 63 that can be freely fitted to the inner diameter part of the engaging cylinder 45 of the on-off valve 31, and the outer periphery has a cylindrical body 65 that is engaged with the locking piece 47. A rotating part 69 equipped with a freely movable locking part 67 is rotatably fitted, and by rotating a handle 72 fitted to a handle part 71 provided integrally with the rotating part 69, the locking part 69 is rotated. 67 is configured to engage with the locking piece 47. A valve body 7 is provided on the inner diameter part of the seal 63.
The outer periphery of 3 is removably engaged. A valve rod 75 that is screwed onto the valve body 73 is supported by a bearing portion 77 so as to be slidable in the axial direction on the main body case 61 . The end of the valve stem 75 is pivotally connected to one end of a curved connecting rod 79 by a pin 81, and the other end of the connecting rod 79 is attached to the inner end of a shaft 83 that is radially supported by the main body case 61. By reciprocating a handle 89, which is pivotally connected to a crank 85 provided by a pin 87 and provided at the outer end of the shaft 83, the valve body 73 is moved to the seal 63.
The on-off valve 35 is opened and closed by inserting and removing it. A stopper pin 88 is provided protrudingly from the end of the main body case 61 and engages with a notch (not shown) provided in the end surface of the engagement tube 45 to restrict relative rotational movement. Further, a sliding pin 90 is fitted to the end of the main body case 61 so as to be slidable in the axial direction, and the ammunition 92
is urged to the right in FIG.
7 and the main body case 61 are restricted. The engagement tube 45 is the main body case 61 of the on-off valve 35
When engaged, the sliding pin 90 is pressed by the end surface of the engagement cylinder 45 and moves to the left in FIG. 8, and the rotation body 67 is released from restriction and becomes rotatable. When the on-off valve 35 and the on-off valve 31 are separated from each other, the valve body 73 and the valve body 51 are in contact with the seal 63 and the valve seat 49, respectively, as shown in FIGS. 8 and 9, respectively. position, and the on-off valves 35 and 31 are each closed. Open/close valve 3
5 and the on-off valve 31, first fit the cylindrical body 65 of the on-off valve 35 and the seal 63 into the inner diameter part of the engaging cylinder 45 of the on-off valve 31, and then attach the handle 71.
Rotate to engage the locking portion 67 with the locking piece 47. At this point, the on-off valve 31 and the on-off valve 35 are connected to each other. Next, when the handle 89 is rotated and the valve stem 75 is slid to the right in FIGS. As shown, both move to the right and separate from the seal 63 and valve seat 49, and the on-off valve 35 and the on-off valve 31 are opened in a connected state.

In the above configuration, when loading the liquid content into the tank chamber 9, the on-off valve 35 at the tip of the loading hose 33 is opened by operating the handle 72.
1, the handle 89 is rotated to open and communicate the on-off valves 35 and 31, and the liquid content is forced into the tank chamber 9 from the loading hose 33. When loading a predetermined amount of liquid is completed, the handle 89 is rotated to its original state to close the on-off valve 31 and the on-off valve 35, and the handle 72 is operated to close the on-off valve 35. Make him leave 31. When unloading the contents into an underground tank, etc., use the discharge hose 23.
One end of the discharge hose 23 is connected to the discharge valve 21.
The other end is connected to an underground tank, etc., and the bottom valve 17,
When the discharge valve 21 is opened, the liquid inside the tank chamber 9 is discharged into the underground tank.

In the above embodiment, the on-off valve 31 and the loading hose 33 are coupled via the on-off valve 35, and when this coupling is released, the on-off valve 31 and the loading hose 33 are respectively closed. It is configured like this. By providing this closing mechanism, the content liquid is prevented from leaking when the connection is released, and the content liquid is sealed at the tip of the loading hose 33, so that when the next loading is carried out, the actual loading capacity and flow meter The scales match exactly.

FIG. 11 shows a second embodiment, in which a ventilation valve 91 is provided in the upper part of the tank chamber 9, and in conjunction with the opening and closing operation of the on-off valve 31, the inside of the tank chamber 9 and the atmosphere are communicated with each other in a freely openable and closable manner. A valve element 97 is slidably supported within the vent valve 91 and is pressed against a valve seat 95 by a bullet 93. Valve body 95
The lower end of the valve stem 99 provided in one body is the rod 10.
The lower end of the rod 101 is pivotally connected to the arm 105 which is slidably pivotally connected to the end plate 27 via the bracket 103.
5 is integrally provided with an actuating arm 107, and when the on-off valve 31 opens and the valve stem 53 presses the actuating arm 107, the valve body 97 is pushed up via the rod 101, and the tank chamber 9 is separated from the atmosphere. It is configured to allow communication. Therefore, when the liquid content is loaded into the tank chamber 9 through the on-off valve 31, the vent valve 91 automatically opens to prevent the pressure inside the tank chamber 9 from increasing. Note that the rod 101 is provided with a tumble buckle 109 for length adjustment. Further, the bottom valve 17 is connected via an operating rod 111 to an operating handle 113 provided at the upper part of the tank chamber 9.

12 and 13 show a third embodiment, in which a tank chamber 9 provided with an on-off valve 31 is adjacent to another tank chamber 9 with a partition wall 7 interposed therebetween, and this on-off valve 31
A communication path 115 is provided for communication between the two.
Therefore, the on-off valves 31, 31, . This makes the work easier. In this embodiment, the communication passage 115 is provided in the tank 1 through the partition wall 7, but it may be provided in the shape of a gutter below the bottom of the tank 1.

FIG. 14 shows a fourth embodiment, in which a member shaped like a rectangular tube with one end cut off diagonally is used.
3, and is provided integrally with the concave member 29 surrounding the opening 25. Further, the concave member 29 is partially closed by the bottom plate 125, and this part is formed into a rectangular tube shape.

Further, the tank bottom as used in the present invention refers to a portion that contacts the lower surface of the liquid content, that is, a surface below the center portion. Further, the arc-shaped cross section includes a curved cross section such as an elliptical arc shape. Furthermore, a concave material is one in which at least a portion of the cross section is concave, and is not limited to a shape bent at a right angle, but also includes a material bent into a curved surface, or a material formed at an obtuse angle greater than a right angle. . Further, in the above embodiment, one on-off valve is provided on one end plate, but the present invention also includes a structure in which a plurality of on-off valves are fixed to one end plate.

Since the present invention has the configuration as described in claim 1, the vehicle does not travel with the liquid content stagnating in the piping, so it can travel safely, and the loading flow meter and tank chamber It is possible to eliminate measurement errors caused by measuring scales, and the bottom loading method improves work safety and efficiency.

Note that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments. Further, the reference numerals described in the claims do not limit the technical scope of the present invention.

[Brief explanation of drawings]

FIGS. 1, 2, and 3 each show a part of the present invention.
A plan view, a side view, and an opposite side view of the embodiment. Fig. 4 is a plan view showing the arrangement of the main parts, Fig. 5 is a front sectional view of the main parts, and Figs. 6 and 7 are front views of the main parts. cross section,
The side view, FIGS. 8 and 9 are front sectional views of the main parts, respectively, FIG. 10 is a front sectional view of the main parts in other operating postures, and FIG. 11 is a front sectional view of the main parts of the second embodiment. 12 and 13 are respectively a plan sectional view and a side sectional view of the main part of the third embodiment, and FIG. 14 is a front sectional view of the main part of the fourth embodiment. (Explanation of the symbols representing the main parts of the drawing) 7
... Partition wall, 9 ... Tank chamber, 23 ... Discharge hose, 25 ... Opening, 27 ... End plate, 29 ...
Concave material, 31... Opening/closing valve, 33... Loading hose, 91... Ventilation valve, 115... Communication path.

Claims (1)

[Scope of Claims] 1. An opening 25 opening laterally is provided at the bottom of the tank chamber 9 having an arcuate cross section, and a concave member 29 having a vertical end plate 27 at the inner end is attached to the opening 25. 25
is enclosed and sealed and fixed inside the tank chamber 9,
An on-off valve 31 that communicates with the inside of the tank chamber 9 is provided inside the concave member 29 and outside the end plate 27.
A tank truck characterized in that a loading hose 33 is detachably connected to the opening/closing valve 31. 2. The invention further comprises a closing mechanism that closes the on-off valve 31 and the loading hose 33, respectively, when the on-off valve 31 and the loading hose 33 are disconnected from each other. The tank truck described in . 3 Provided at the upper part of the tank chamber 9, the on-off valve 3
2. The tank truck according to claim 1, further comprising a vent valve 91 which communicates the inside of the tank chamber 9 with the atmosphere in a freely openable and closable manner in conjunction with the opening/closing operation of the tank chamber 9. 4. The scope of the above claims, characterized in that the tank chamber 9 in which the on-off valve 31 is provided is provided with a communication passage 115 that communicates the on-off valve 31 with another adjacent tank chamber 9 via the partition wall 7. 1. The tank truck described in 1.