JP3366486B2 - Powder carrier - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle for transporting granular material.
That is, the present invention relates to a granular material transport vehicle that loads and transports cement, flour, and other granular materials in a bulk state in a tank. 2. Description of the Related Art FIG. 5 is a front view of a conventional granular material carrier of this type, in which FIG. 1A shows a state where the tank is held horizontally, and FIG. FIG. 6 shows the tilted state.
Is a hydraulic and air circuit diagram of this conventional example. In this type of granular material transport vehicle 1, a tank 3 is mounted on a chassis 2 and a rear portion of the tank 3 is pivotally supported on the chassis 2 by a dump hinge 4. A hydraulic cylinder 5 is erected between the front end of the tank 3 and the upper surface of the chassis 2. The hydraulic cylinder 5 has a main body pivotally connected to the front end of the tank 3 with a pin 6, and a tip end of the piston rod is pinned on the chassis 2. It was pivoted at 6. [0005] First, as shown in FIG. 5 (1), in a state where the hydraulic cylinder 5 is shortened and the tank 3 is horizontally held on the chassis 2, the granular material is loaded into the tank 3. As shown in FIG. 5 (2), the hydraulic cylinder 5 is extended, the front part of the tank 3 is lifted, and the tank 3 is tilted rearward and dumped. The powder and particles loaded in the tank 3
It was unloaded from the discharge section 7 below the rear end of the tank 3 to the outside. In addition, the unloading of the granular material is performed by tilting the tank 3 so that the granular material flows down, and blowing the pressurized air into the tank 3 to fluidize and compress the granular material. And the combined use of both methods has been used more frequently than before. [0004] Such an unloading method has been conventionally used.
This was performed in the hydraulic circuit A and the air circuit B shown in FIG. That is, the driving of the vehicle running engine 8 is controlled by the attached P.O. T. O. After being taken out by the device 9,
First, by driving the hydraulic pump 12 via the propeller shaft 10 and the clutch 11, oil from the hydraulic oil tank 13 is supplied to the hydraulic cylinder 5 via the switching valve 14 via the hydraulic circuit A, and the hydraulic cylinder 5 is Had been extended. Along with this, the propeller shaft 10 and the clutch 1
Air compressor 15 as a source of pressurized air via 1
, The pressurized air was blown into the tank 3 through the air circuit B. After the unloading is completed, the clutch 11 is switched to stop the hydraulic pump 12 first, and the oil from the hydraulic cylinder 5 passes through the switching valve 14 switched via the hydraulic circuit A by its own weight, and the hydraulic oil tank 13, the air compressor 15 was stopped, and the blowing of pressurized air into the tank 3 was also stopped. In the figure, 16 is a relief valve, and 17 is a stop valve. [0005] The following problems have been pointed out in such a conventional example. That is, in this type of prior art granular material transport vehicle 1, as described above, the hydraulic circuit A and the air circuit B, that is, the unloading system using both the hydraulic system and the air system are adopted, and the hydraulic cylinder is used. 5, a hydraulic system such as a clutch 11, a hydraulic pump 12, a hydraulic oil tank 13, a switching valve 14, a relief valve 16, a hydraulic circuit A, and the like was essentially provided. Therefore, first, a problem has been pointed out that the configuration is complicated by such a hydraulic system and the cost is increased. Second with this,
It has been pointed out that the weight of the hydraulic system is increased by the amount of the hydraulic system, and the amount of the granular material loaded on the tank 3 is reduced accordingly. [0006] In this type of prior art granular material transport vehicle 1, a mechanical type using a screw shaft is adopted instead of a hydraulic type using such a hydraulic cylinder 5 and a hydraulic system.
Therefore, there is also an unloading type using both the mechanical type and the above-mentioned pneumatic type. That is, a mechanical type in which a front portion of the tank 3 is lifted by using a screw shaft instead of the hydraulic cylinder 5 and rotating the screw shaft with a mechanical system such as an electric motor in some cases is adopted. . However, even in such a granular material transport vehicle 1 that uses both a mechanical type and an air type, first, according to the above-mentioned conventional hydraulic type, the configuration is complicated and the cost is increased by the mechanical system. Second, the problem has been pointed out that the weight increases by the amount of the mechanical system and the loading amount of the granular material decreases. The present invention has been made in view of such circumstances, and has been made in order to solve the above-mentioned problems of the prior art. An air cylinder is provided between a front end of a tank and an undercarriage, and a cylinder is provided upright. Along with the interior of the bag, the existing pressurized air source that operates by taking out the drive of the vehicle driving engine is used for airbag and for blowing compressed air into the tank,
Characterized in that they are shared. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to firstly propose a powdery and granular material transporting vehicle whose configuration is simplified and whose weight can be reduced. [0008] The technical means of the present invention to achieve this object is as follows. In other words, this powder / particle transporter loads and transports cement, flour, and other powders in the tank in a loosely dispersed state. The tank is mounted on an undercarriage, a rear portion of the tank is pivotally supported on the undercarriage by a dump hinge, and a cylinder is erected between the front end of the tank and the undercarriage. An air bag is pivotally mounted on the front end and on the chassis, and an air bag is housed in the cylinder chamber. The air bag is mounted between the base end of the cylinder chamber of the cylinder and the piston, and is connected to an air circuit for pressurized air through a conduit provided in the piston rod. And can be expanded and contracted substantially up and down. Thus, the airbag is compressed to hold the tank horizontally by shortening the cylinder, and pressurized air from a pressurized air source is used to extend the cylinder, lift the front of the tank, and lift the tank. It can be extended and contracted to an extended state in which it leans backward. [0010] The unloading of the particles loaded in the tank is performed by flowing the particles down by tilting the tank backward, and by blowing compressed air into the tank. It is a combined method implemented by fluidizing and pumping the granules. The pressurized air source controls the driving of the vehicle running engine by the P.O. T. O. It consists of an air compressor that is taken out and operated by the device, and is also used for pressurizing air into the air bag and for blowing pressurized air into the tank. The present invention comprises the above means, and operates as follows. In this granular material transport vehicle, while the granular material is loaded and transported in the tank while the tank is held horizontally on the undercarriage, and the tank is tilted with the dump hinge as a fulcrum, The powder is unloaded. And, pivotally connected between the front end of the tank and the undercarriage,
An air bag is housed inside the upright cylinder, and when the air bag is in a compressed state, the cylinder is shortened, the tank is held horizontally, and pressurized air is pressed into the air bag to be in an extended state. In this case, the cylinder is extended and the tank is tilted. The unloading of the powder is performed by tilting the tank and blowing compressed air into the tank. Further, a common pressurized air source is used for press-fitting the air bag and for blowing into the tank, and the pressurized air source is operated by taking out the drive of a vehicle running engine. An air compressor is used. [0013] Therefore, in this granular material transport vehicle, the first
In addition, an air bag is installed inside a cylinder that is pivotally mounted between the front end of the tank and the undercarriage and stands upright, and then the unloading method is adopted in which pressurized air is pressed into the air bag and the tank is tilted. , Consisting of a very simple configuration. In addition, the unloading system is unified into a pneumatic system, and a pressurized air source using a vehicle driving engine is also used, so that the configuration is very simple from this viewpoint. Secondly, for the same reason as the above-described first, the overall weight of the unloading method is reduced, and the weight is reduced, for example, the unloading method is integrated into an air type. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. 1 and 2 show a reference example which does not belong to the present invention. FIG. 1 (1) is a front view of a state in which the tank is held horizontally, and FIG. FIG. 2 is a front view of a tilted state, and FIG. 2 shows an air circuit diagram thereof. 3 and 4 show an embodiment of the present invention.
FIG. 1 (1) is a front view of a state where the tank is held horizontally, FIG. 3 (2) is a front view of the state where the tank is tilted, and FIG. Air circuit diagram, Fig. 4
FIG. 2B is an enlarged front view of the compressed state of the airbag, and FIG. 4C is an enlarged front view of the extended state of the airbag. The carrier 18 transports cement, flour, and other powders (not shown) in the tank 3 in a bulk state. First, the granular material transport vehicle 18 will be generally described in detail. The granular material transport vehicle 18 is also referred to as a bulk vehicle, and as the granular material to be loaded, carbon, sand, rice, other grains, chemical products, chemicals, and the like can be considered in addition to the above. As shown in FIGS. 1 and 3, etc.
The tank 3 has a linear, substantially cylindrical shape with front and rear closed, and is mounted on the chassis 2.
A plurality of manholes 19 for charging and loading of the granular material are provided along the longitudinal direction, and the manhole 19 includes an opening and a lid. A discharge section 7 is provided below the rear end of the tank 3, and the discharge section 7 includes a short cylindrical opening, an on-off valve, and the like. The tank 3 is pivotally supported by a dump hinge 4 which is a left-right axis on a rear end, that is, a lower end of the rear end, on a rear end of the chassis 2. Reference numeral 20 denotes a cradle.
In the illustrated example, two 0s are disposed on the center of the chassis 2 or the like.
The upper surface has a curved shape corresponding to the tank 3 so as to stably hold the tank 3 horizontally on the chassis 2 during traveling or the like. In the figure, 21 is a cab, and 22 is a wheel. 1 and 2, an air bag 23 is interposed between the lower part of the front of the tank 3 and the upper part of the undercarriage 2 of the vehicle 18 of the reference example shown in FIGS. The air bag 23 has a bellows shape and can be expanded and contracted substantially up and down. The compressed state C (see FIG. 1 (1)) holding the tank 3 horizontally and the air compressor 23 from the air compressor 15 as a pressurized air source. Due to the press-in of the pressurized air, the front part of the tank 3 is lifted by the air pressure, and the tank 3 is tilted rearward in an extended state D (see FIGS. 1 (2) and 2).
It is stretchable. In addition, the lifting angle α of the tank 3 is, for example, when the granular material to be loaded is cement,
The angle of repose is set at about 12.5 degrees in consideration of the angle of repose, but 25 degrees, 4
0 degree and other various angles are set. The air bag 23 is made of a resin-coated fiber or reinforced synthetic rubber, has a square cross section or a circular cross section, and has a sealed, bag-like shape, and can be expanded and contracted substantially up and down. It is mounted between the lower part of the front of the tank 3 and the upper part of the center of the chassis 2 via a mounting plate (not shown). For example, assuming that the diameter E of the tank 3 is 2 m, the length F of the tank 3 is 4 m, and the powdered material to be loaded is cement, the weight of the tank 3 including its own weight is 12,000 kgf, and the weight of the dump hinge 4 and the tank 3 The distance G between the centers of gravity W is 1.5 m, the air pressure used is 2 kgf / cm ² , the dump hinge 4 and the airbag 23.
When the distance H between the centers is 2.3 m, a square air bag 23 having a side length J of about 62 cm is used, and a circular air bag 23 having a diameter K Of about 70 cm is used.
The air bag 23 has a double structure,
It is also conceivable to use a plurality instead of individual pieces. The granular material transport vehicle 18 of the reference example is configured as described above. Next, the embodiment of the present invention shown in FIGS. 3 and 4 will be described. In the granular material transporting vehicle 18 of this embodiment, a cylinder 24 is provided upright between the front end of the tank 3 and the upper surface of the chassis 2. 2 and an air bag 26 is housed in a cylinder chamber 25 thereof. The airbag 26 is in a compressed state C in which the cylinder 24 is shortened and the tank 3 is held horizontally (see FIG. 3 (1) and FIG. 4 (2)). )
And pressurized air from the air compressor 15 as a pressurized air source, the cylinder 24 is extended by air pressure to lift the front part of the tank 3, and the tank 3 is tilted rearward in an extended state D (FIG. 3 (see FIG. 2) and FIG. 4 (see FIG. 1) and (3). The lifting angle α of the tank 3 is the same as that described in the reference example. The cylinder 24 and the air bag 2
No. 6 will be described in further detail. First, in the cylinder 24, a cylinder chamber 25, which is a base end portion, is pivotally mounted on a mounting portion 27 protruding from the front end of the tank 3 with pins 6 serving as left and right axes, and a tip end of a piston rod 28, which is a tip end portion, The tank 3 is pivotally mounted on the mounting portion 29 protruding above the front portion of the chassis 2 with the pin 6 serving as a left and right axis, so that the tank 3 can be slightly swung up and down on the chassis 2 while using the dump hinge 4 as a fulcrum. And
The air bag 26 is housed in the cylinder chamber 25 of the cylinder 24 and is mounted between the base end of the cylinder chamber 25 and the piston 30. The material and structure of the air bag 26 are the same as those of the above-described reference example. According to bag 23. For example, the diameter E of the tank 3 is 2 m, and the length F of the tank 3 is
Is assumed to be 4 m, the granular material to be loaded is cement, the weight including the own weight of the tank 3 is 12,000 kgf, and the distance G between the dump hinge 4 and the center of gravity W of the tank 3 is 1.5.
m, the air pressure used is 2 kgf / cm ² , and the distance L between the dump hinge 4 and the center of the cylinder 24 is 4 m, the air bag 26 in the cylinder 24 has a diameter M
Of about 53 cm is used. The granular material transport vehicle 18 according to the embodiment of the present invention is configured as described above. Next, according to FIG. 2 and FIG.
The air circuit N and the like attached to the granular material transport vehicle 18 of the reference example and the embodiment of the present invention will be described. In this powder / particle carrier 18, the unloading of the powder / particle loaded in the tank 3 is caused by the falling of the powder / particle due to the above-mentioned tilting backward of the tank 3 and the pressurized air flowing into the tank 3. A fluidization and pressurization of powder and granules by blowing are used in combination. The air compressor 15 serving as a source of pressurized air is also used for pressurizing the pressurized air into the air bags 23 and 26 and for blowing the pressurized air into the tank 3. These will be described in further detail with reference to the air circuit N of the reference example of FIG. 2 and the air circuit N of the embodiment of FIG. 4A. The driving of the engine 8 for running the vehicle is controlled by the T. O. It is taken out by the device 9 and the air compressor 15 is operated via the propeller shaft 10. The pressurized air obtained by the air compressor 15 is supplied and used for blowing into the tank 3 by connecting one of the branched air circuits N to the tank 3 via the stop valve 17. . At the same time, the other branched air circuit N is connected to the air bag 23 in the reference example of FIG. 2 via the stop valve 17 and the check valve 31, and in the embodiment of FIG. A conduit 32 provided in a piston rod 28 is provided in an air bag 26 in a cylinder 24.
By being connected via (see FIG. 4 (2) and FIG. 3 (3)), it is supplied and used for press-fitting into the air bags 23 and 26. As described above, in the illustrated example, the pressurized air from the air compressor 15 which is a pressurized air source is used for blowing into the tank 3 and for press-fitting the air bags 23 and 26. The other branched air circuit N is provided between the check valve 31 and the airbags 23 and 26 and further to the atmosphere side by the stop valve 1.
7 and is used for discharging pressurized air from the air bags 23 and 26. The present invention is configured as described above. Then, it becomes as follows. This granular material transport vehicle 18
Then, in a state where the tank 3 is held horizontally on the chassis 2 (see FIG. 3A), cement,
Flour and other granular materials are loaded and transported in a loosely dispersed state. At the destination, the tank 3 is tilted rearward and dumped on the chassis 2 with the dump hinge 4 as a fulcrum (see FIG. 3 (2) and FIG. 4 (1)). The particles loaded in the tank are unloaded to the outside from the discharge section 7 at the rear end of the tank 3. In the granular material carrier 18, the cylinder 2 is pivotally mounted between the front end of the tank 3 and the upper surface of the chassis 2.
Inside 4, an air bag 26 is provided. First, when the airbag 26 is in the compressed state C, the cylinder 24 is shortened and the tank 3 is held horizontally ((1) in FIG. 3).
(See FIG. 4 and FIG. 4 (2)).
When pressurized air is press-fitted into the cylinder to be in the extended state D, the cylinder 24 is extended, and the tank 3 is tilted rearward with its front portion lifted (FIG. 3 (2), FIG. 4 (1)). )
FIG. 4 and FIG. 4 (3)). Furthermore, this powder and granular material transport vehicle 1
In No. 8, the unloading of the granules is performed by a combination of the flow of the granules down due to the tilting of the tank 3 and the fluidization and pressure feeding of the granules by blowing the pressurized air into the tank 3. It is implemented in. And such an air bag 26
An air compressor 15, which is a common source of pressurized air, is used for press-fitting into the tank and blowing into the tank 3. The air compressor 15 controls the driving of the vehicle running engine 8 by the P.D. T. O. Take it out with device 9,
Activated. By the way, such a granular material transport vehicle 18
, The following first and second cases are obtained. First, in the granular material transport vehicle 18, an air bag 26 is installed inside a cylinder 24 which is pivotally mounted between the front end of the tank 3 and the upper surface of the chassis 2, and is used for a vehicle. An unloading method in which pressurized air is press-fitted from an air compressor 15 using the engine 8 to tilt the tank 3 is adopted. As described above, the unloading method has a very simple configuration. Further, in the powder / particle carrier 18, as the unloading method, the tilting of the tank 3 by the air bag 26 and the blowing of the pressurized air into the tank 3 are used together, and The common air compressor 15 is used for both press-fitting and blowing into the tank 3, and the unloading method is unified into a pneumatic type, and the configuration is very simple from this viewpoint. That is, the pressurized air for the air bag 26 can be obtained by using the air compressor 15 which is a conventional pressurized air source (see the conventional example in FIG. 6), and the configuration is particularly simplified. Second, in the granular material transport vehicle 18, the overall weight of the unloading system is greatly reduced for the same reason as in the above-described first. Further, for the same reason as the above-mentioned first, the unloading method is unified into an air type, and the air compressor 15 is also used, so that the weight is particularly reduced. As described above, the granular material transport vehicle according to the present invention has an air bag mounted inside a cylinder pivotally mounted between the front end of the tank and the undercarriage and standing upright. The following effects are exhibited by using the existing pressurized air source, which operates by taking out the drive of the vehicle running engine, as the air source for the air bag and for blowing the pressurized air into the tank. First, the configuration is simplified. That is, as compared with the above-mentioned conventional example of this type, the powder and granular material transport vehicle adopts a hydraulic or mechanical unloading method, for example, the unloading method is one pneumatic type. For example, the configuration is simplified, and the cost is excellent. Second, the weight is reduced. That is, as compared with the above-mentioned conventional example of this type, the powder and granular material transport vehicle adopts a hydraulic or mechanical unloading method, for example, the unloading method is one pneumatic type. As a result, the overall weight of the unloading method is reduced, and the loading amount of the granular material increases accordingly. As described above, the effects exhibited by the present invention are remarkable and large, for example, the problems existing in this kind of conventional example are eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a reference example of a granular material carrier not belonging to the present invention. FIG. 1A shows a state where a tank is held horizontally, and FIG. The figure shows a state where the tank is tilted. FIG. 2 is an air circuit diagram of the reference example. FIG. 3 is a front view showing an embodiment of the granular material transport vehicle according to the present invention, wherein (1) FIG. 3 shows a state in which the tank is held horizontally, and (2) FIG. Indicates the status. FIGS. 4A and 4B show details of the embodiment, wherein FIG. 1A is an air circuit diagram, FIG. 2B is an enlarged front view of a compressed state of the airbag, and FIG. It is a front enlarged view. FIG. 5 is a front view of a conventional granular material transport vehicle, (1).
The figure shows the state where the tank is held horizontally, and the figure (2)
This shows a state where the tank is tilted. FIG. 6 is a hydraulic and air circuit diagram of the conventional example. [Description of Signs] 2 chassis 3 tank 4 dump hinge 8 engine 9 T. O. Device 15 Air compressor (pressurized air source) 18 Granular material transport vehicle 24 Cylinder 25 Cylinder chamber 26 Air bag C Compressed state D Extended state

Claims (1)

(57) [Claims] [Claim 1] Cement, flour, and other powders
A powdery and granular material transporter for loading and transporting in bulk a bulk state in a tank, wherein the tank is mounted on a chassis, and a rear portion thereof is pivotally supported on the chassis by a dump hinge and has a front end. A cylinder is erected between the tank and the undercarriage, and the cylinder is pivotally mounted on the front end of the tank and is also pivotally mounted on the undercarriage, and an airbag is provided in the cylinder chamber. Is mounted between the base end of the cylinder chamber of the cylinder and the piston, and is connected to the air circuit of the pressurized air via a conduit provided in the piston rod, and it can be expanded and contracted substantially in the shape of a bellows And
A compression state in which the cylinder is shortened and the tank is held horizontally, and the cylinder is extended by pressurized air from a pressurized air source to extend the cylinder, lift the front part of the tank, and tilt the tank backward. In this state, the unloading of the granules loaded in the tank is performed by flowing down the granules by tilting the tank backward, and The powdered and granular material is fluidized by blowing pressurized air, and the powdered material is pumped. The pressurized air source controls the driving of the vehicle running engine by the P.V. T. O. It consists of an air compressor that is taken out and operated by the device, and is also used for press-fitting the pressurized air into the air bag and for blowing the pressurized air into the tank. Granule carrier.