JPH07333047A - Movable scale - Google Patents

Abstract

PURPOSE:To weigh a weight of a load on a platform at an arbitrary place and also make the platform movable. CONSTITUTION:A jack 3 which can support a movable platform 2 in contact with the ground is provided at an appropriate position of the platform 2, and a load detector 4 is provided for detecting a load applied to the jack 3 while the platform 2 is being supported by the jack 3. Further a calculator 5 for calculating a load applied to the jack 3 based on a load detection value detected by the load detector 4 and a display device 6 for displaying the value calculated by the calculator 5 are provided. Thus the load W on the platform 2 can be weighed at an arbitrary place and the platform 2 is made movable by a self- traveling type vehicle 1A (1B, 1C), thereby eliminating a space which is always occupied for weighing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable scale which enables a load carried on a cargo bed to be weighed together with the cargo bed and which can be moved by a self-propelled vehicle.

[0002]

2. Description of the Related Art For example, in a garbage incinerator or a crushed stone yard, it is necessary to measure and manage a load loaded on a vehicle. Conventionally, the loading load of such a vehicle is as shown in FIG.
As shown in, the weight is measured by a track scale X installed on the ground. That is, the vehicle 1A loaded with the cargo W
Is run to the truck scale installation place, where the vehicle 1A is placed on the truck scale X and weighed, and then the weight of the vehicle itself that is registered in advance is subtracted to obtain the weight of the cargo W.

By the way, a ground-mounted truck scale X as shown in FIG. 11 is often installed beside a road because of its convenience of use.

[0004]

However, in the case of the ground-mounted truck scale X as shown in FIG. 11, the land of a considerable space is occupied, and especially when the truck scale X is installed on the side of the road, the land price is high. It becomes expensive and the installation cost becomes expensive. Particularly in the case of urban areas, it is difficult to secure a space for installing a truck scale on the side of the road, and it is necessary to move the vehicle into and out of the truck scale installation place every time weighing, which causes traffic congestion. there were.

Further, when the weight of the vehicle is measured by the ground-installed truck scale X, it is necessary to drive the vehicle and move it to the place where the truck scale is installed each time the weight is measured.
It takes time to move. Furthermore, the weight of the load W is unknown until the vehicle weight is measured on a truck scale,
There is a risk of driving the vehicle with the vehicle overloaded (overweight). Then, if overloading is found by weighing, it is necessary to return to the original loading place in order to reduce the load, and there is a problem that time is lost and the vehicle is operated in a loading violation state.

In view of the problems when using the above-mentioned conventional ground-installed truck scale, the present invention has a weighing function on the loading platform itself for loading a load so that the weight of the load can be measured on the spot. In addition, it is an object of the present invention to provide a movable scale capable of moving the platform.

[0007]

The present invention has the following constitution as means for solving the above problems.

In the movable scale according to the first to fourth aspects of the present invention, jacks are provided at three or four points of the loading platform for loading the load so that they can be grounded on the ground and stably support the loading platform. . That is, the luggage carrier can be supported at three points or four points by three or four jacks. Further, each jack can employ an appropriate driving means such as a hydraulic cylinder, an air cylinder, a motor or the like. And
By operating each of the jacks, the loading platform can be moved up and down, and when each jack is grounded, the loading platform can be supported in a state of being separated (floating) from the ground. In addition, as a loading platform, a flat one,
An appropriate structure can be adopted as long as it can carry a load, such as a box type, a container type having a central portion recessed downward, and a tank type.

Further, in the movable scale according to the first to fourth aspects, each load detector is provided for detecting the load applied to each jack in the grounded state of each jack. The respective load detection values detected by the respective load detectors are input to the arithmetic unit, the total load applied to each jack is calculated by the arithmetic unit, and the calculated value is displayed on the display unit. In the arithmetic unit, a "0" point is set on the basis of each load detection value emitted from each load detector when the load is empty and the load is empty, and the load is loaded on the load. Sometimes, it is preferable to display only the calculated value based on the accumulated load amount on the display device.

Further, the loading platform is movable by a self-propelled vehicle in a state where each jack is separated from the ground. In this case, the cargo bed and the vehicle are integrally configured as in claim 2 (that is, a truck is adopted), or the vehicle (towing vehicle) and the cargo bed (with wheels) are separated as in claim 3. It can be connected (for example, a tractor and a trailer) or, as in claim 4, a loading platform (without wheels) can be freely loaded and unloaded on a chassis frame of a vehicle. It is also possible to install a packaging device such as a bag filling machine on the platform and use this mobile scale as a weighing and packaging device.

Further, in the movable scale according to the invention of claim 5, one end side in the longitudinal direction of the loading platform is supported on the ground by a supporting means such as a wheel or a supporting leg, while a supporting portion by the supporting means of the loading platform is provided. Is equipped with a jack that can be grounded on the ground and can support one end of the loading platform at one or two positions near the opposite end. A load detector for detecting a load applied to the jack in a supporting state of the loading platform by the jack, and a calculation device for calculating a load applied to the jack based on a load detection value detected by the load detector; A display device for displaying the calculated value calculated by the calculation device is provided. Further, the loading platform can be moved by a self-propelled vehicle with the jack separated from the ground. Also in the case of the movable scale according to claim 5, the vehicle and the loading platform may be an integral type as in claim 2 or a separate type as in claim 3 or 4.

In the mobile scale according to claim 5 of the present application,
The weight of the load on the loading platform is measured only on one side in the front-back direction of the loading platform, but at that time, the calculation device performs a predetermined calculation based on the load detection value sent from the load detector, and the display unit Make sure the regular weight is displayed on. That is, the loading load on the platform is shared and supported by the supporting means (having no measuring function) and the jack (having measuring function), and the load carried by the jack is a part of the total load. Therefore, in the case where the weight is measured only on one side in this way, it is necessary to perform calculation by the arithmetic unit so as to output the regular weight based on the load detection value transmitted from the load detector. For example, in the arithmetic device, the load detection value output from the load detector may be multiplied by a proportional constant obtained in advance by a test, and the load weight at that time may be calculated.

[0013]

When the weight of the load on the bed is measured by the movable scale according to the first to fourth aspects of the present invention, the load is loaded on the bed (or loaded on the bed while the bed is floated by each jack). After loading, lift the loading platform with each jack). At this time, if it is preferable to keep the loading platform horizontal, the loading platform can be leveled by adjusting the support height of each jack. In this way, when the load platform is supported by each jack, the total load of the load platform (including the vehicle in the case of a vehicle-integrated type) and the load is added to each jack in a distributed manner. The load detection value is detected by the container, and the respective load detection values are output to the arithmetic unit side, and the arithmetic unit calculates on the basis of the respective load detection values to display the accumulated load amount on the display unit.

After the load is weighed, each jack may be placed in a non-grounded state and the load carrier may be moved from the loading position by the vehicle. At this time, in the case where the vehicle and the bed are integrated as in claim 2, the jack can be moved as it is in a state of being separated from the ground, and the vehicle (towing vehicle) can be moved as in claim 3. In the case where the cargo bed (with wheels) is detachably connected (for example, a tractor and a trailer), the cargo bed can be towed by connecting the vehicle and the cargo bed, and further, the cargo bed (without wheels) is connected as in claim 4. In a vehicle that can be freely loaded and unloaded on a chassis frame, the chassis frame can be moved while the cargo frame is mounted by connecting the two after connecting the chassis frame to the lower surface side of the cargo frame.

By the way, in a movable scale in which a vehicle and a loading platform (with a weighing function) are integrally connected, the vehicle with the loading platform can be moved as it is by simply jacking down after weighing in a jack-up state, While there is an advantage that the moving work can be continuously and speedily performed after the weighing work, the weight of the vehicle itself, which is a large weight at the time of weighing, is also measured at the same time, so that the weighing accuracy of the loaded portion tends to be rough (that is, The ratio of the load capacity becomes smaller and the fluctuation ratio of the instrument due to the change in the load capacity becomes smaller). Therefore, the mobile scale integrated with the vehicle and the loading platform is suitable for weighing a load (for example, earth and sand or incinerated dust) that does not require very precise accuracy.

Further, in the mobile scale in which the vehicle and the loading platform (with a weighing function) are separable, it is not necessary to weigh the vehicle portion at the time of weighing, so that the load loaded on the loading platform can be highly accurately. You can measure. Further, in this case, if a plurality of loading platforms (with a weighing function) are used for one vehicle, one vehicle can be shared for moving each loading platform.

According to the movable scale of the invention of claim 5 of the present application, weighing can be performed only on one end side in the longitudinal direction of the loading platform. In this case, since a part of the weight of the cargo bed is supported by the supporting means (non-weighing part), the weighing accuracy becomes considerably rough. However, as in the case of the earth and sand loaded on the truck (dump truck) as the weighing object, for example. However, the present invention can be sufficiently applied to the case where it is only necessary to determine whether or not the load is overweight.

[0018]

As described above, in the movable scale according to the inventions of claims 1 to 4, jacks are provided at three or four positions of the load carrier that can be moved by the vehicle, and the load carrier is completely attached by each jack. The load applied to each jack at that time is detected by each load detector, each load detection value is calculated by the calculation device, and the calculated value is displayed on the display device. Therefore, it is possible to measure the weight of the load loaded on the cargo bed at any place. As described above, in the mobile scale of the present invention, since the load can be weighed at any place, there is a demerit of always occupying the above-ground space like a conventional ground-based truck scale (for example, because the land price is high. There is an effect that it is possible to eliminate the disadvantages (the moving cost becomes high) and the disadvantage that it is necessary to move to the setting place for weighing. Further, in the movable scales according to claims 1 to 4, since the weighing platform is completely floated by each jack, the weighing scale has a considerable accuracy. Is obtained.

Further, in the movable scale in which the vehicle and the loading platform (with a weighing function) are integrally connected as in claim 2 of the present application, if the weighing is performed in the jack-up state and then the jack is lowered, the loading scale is directly attached. There is an effect that the vehicle can be moved, and the moving work can be continuously and speedily performed after the weighing work.

Further, in the movable scale in which the vehicle and the loading platform (with a weighing function) can be separated as in claims 3 to 4, it is not necessary to weigh the vehicle portion at the time of weighing. There is an effect that the load to be loaded on the upper part can be measured with high accuracy, and the present invention can be applied even when comparatively high accuracy is required. Also, in this case, if multiple cargo beds (with weighing function) are used for one vehicle,
Since one vehicle can be commonly used for moving each cargo bed, there is also an effect that the vehicle can be effectively used.

In the movable scale according to claim 5 of the present application, the jack (with the load detector) is provided only on one end side in the longitudinal direction of the loading platform.
In this case, although the weighing accuracy is lower than when weighing in the completely floating state, the weighing work can be done simply by jacking up the loading platform on only one side. This has the effect of reducing the number of load detectors used.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to FIGS. 1 to 10. The first embodiment of the present invention is shown in FIGS. The second embodiment, the third embodiment in FIGS. 6 and 7, the fourth embodiment in FIG.
10 and FIG. 10 respectively show the movable scale of the fifth embodiment.

In the first embodiment shown in FIGS. 1 to 3, as the movable scale, an ordinary truck in which the vehicle 1A and the loading platform 2 are integrally formed is adopted. That is, in the mobile scale of the first embodiment, the bottom plate 21 of the luggage carrier 2 is fixed on the chassis frame 12 of the vehicle 1A. Further, the movable scale is provided with jacks 3, 3 ... In the vicinity of four corners of the loading platform 2 (three positions may be provided as long as they can be stably supported). In this embodiment, the jack 3
A telescopic type with a hydraulic cylinder has been adopted as. And in this movable scale, each jack 3,
By extending 3 ... (The state shown by the solid line in FIG. 1), the vehicle 1A and the loading platform 2 can be supported in a state where the respective wheels 14, 14 of the vehicle 1A are floated above the ground GL by the respective jacks 3, 3. , On the other hand, when the jacks 3, 3 ... Are reduced (the ground plate 31 is at the position 31 '), the wheels 14, 14 are
Will be able to drive the vehicle with the cargo bed by touching the ground.
In the first embodiment, a normal truck is used as the vehicle 1A with a cargo bed, but in other embodiments, a bulk truck, a dump truck, a tank truck for liquid transportation, or the like may be used.

The load detectors 4, 4 ... Which detect the load applied to each of the jacks 3, 3 ... In the jack-up state (state shown by the solid line in FIG. 1).
・ Each is provided. In this embodiment, the load detectors 4, 4, ... Are provided between the rod of the jack cylinder and the ground plate 31. However, the load detectors 4, 4, ... Good.
Further, as the load detector 4, an appropriate one such as a ring-shaped cell or a simple compression cell can be adopted.

The load detectors 4, 4 ... Send out load detection values (analog electric signals S ₁ -S ₄ ) according to the loads applied to the jacks 3, 3 ,. The load detection values of are input to the calculation device 5 and calculated there. The arithmetic unit 5 has a function of adding the load detection values (analog electric signals) from the load detectors 4, 4, ... And converting the analog electric signals into digital electric signals.

When each load detection value is calculated by the calculation device 5, the calculated value is output as a digital electric signal to the display device 6 side, and the total load applied to each jack 3, 3, ... It is supposed to be displayed. In the arithmetic unit 5, the load detectors 4, 4, ... When the platform 2 is empty.
If the "0" point is set based on each load detection value emitted from the loader, and when the load W is loaded on the platform 2, only the calculated value based on the load weight is displayed on the display device 6. Good.

In the mobile scale of the first embodiment, the display device 6 is provided in the driver's cab 11 of the vehicle 1 at a position visible from the driver's seat. The display device 6 is installed at a proper place outside the driver's cab. It may be provided.

In FIG. 3, reference numeral 30 is a hydraulic pump mounted on the vehicle 1A, and reference numeral 33 is a hydraulic pressure switching valve for the jacks 3, 3 ..., respectively.
The jacks 3, 3, ... Can be individually expanded and contracted by switching the 3, 3 ,.

The mobile scale according to the first embodiment is used, for example, as shown in FIG. 1, with the cargo bed 2 portion positioned directly below the chute opening of the silo 10. That is, the vehicle 1A is driven and moved so that the loading platform 2 portion is located directly below the chute opening of the silo 10, and the four jacks 3, 3 ...
Extending and supporting the vehicle 1A and the loading platform 2 by the respective jacks in a state of being completely levitated. At this time (when the loading platform 2 is empty), the display device 6 displays the weight “0”. When the chute opening of the silo 10 is opened in that state, the articles (for example, powder, granules, etc.) W in the silo 10 are supplied onto the loading platform 2, and a load is applied to each jack 3, 3 ,. Along with this, the load detection values (electrical signals S _{1 to} S ₄ ) from the load detectors 4, 4, ... Are output to the arithmetic unit 5 side, and the arithmetic values calculated by the arithmetic unit 5 are displayed on the display unit 6. Is output to the display device 6 and the load amount is displayed. Then, when the weight displayed on the display device 6 reaches a predetermined amount, the chute port of the silo 10 is closed and the supply of the articles is stopped. Next, when the jacks 3, 3 ... Are contracted to separate the ground plate 31 from the ground GL as indicated by reference numeral 31 ', the wheels 14 of the vehicle 1A are grounded, and the vehicle 1A with a carrier is self-propelled. It will be possible.

As another example of the use of the movable scale of the first embodiment, after loading the load W on the loading platform 2 with the wheels 14 of the vehicle 1A grounded, each jack 3,
The vehicle 1 is extended with the jacks 3, 3 ...
A and the bed 2 may be supported in a floating state. Also in this case, the weight of the load W is displayed on the display device 6 based on the load applied to each jack 3, 3.

As described above, in the mobile scale of the first embodiment, the vehicle 1A with a loading platform has a weighing function, and after weighing in the jack-up state, the wheel 14 is grounded by jacking down. It can be moved as it is. Therefore, the load W can be weighed at any place, and can be moved (moved) to the destination immediately after the weighing. Like the conventional ground-installed truck scale (Fig. 11), the truck scale can be used for each weighing. It eliminates the need to move to the installation site, and does not constantly occupy the ground space for weighing.

The mobile scale of the second embodiment shown in FIGS. 4 and 5 is constructed so that the vehicle 1B and the loading platform 2 can be separated from each other and the loading platform 2 can be towed by the vehicle 1B. The vehicle 1B is a towing vehicle, and its chassis frame 12 is formed to be relatively short. Wheels 22 are provided on the lower surface of the loading platform 2 toward the rear. Further, four jacks 3, 3 ... Are attached to the cargo bed 2 as in the first embodiment. The hydraulic pressure source for the jack 3 is the vehicle 1B.
Alternatively, a hydraulic motor may be installed at the loading site to connect the hydraulic hoses to the jacks 3, 3 ... Removably. .. are also provided with load detectors 4, 4, ..
Further, the calculation device 5 for calculating the detection values from the load detectors 4, 4, ... And the display device 6 for displaying the measured weight are respectively installed on the bed 2 side.

In the mobile scale of the second embodiment, as shown in FIG. 4, with the vehicle 1B and the loading platform 2 separated, the loading platform 2 is provided with four jacks 3 directly below the chute opening of the silo 10, for example. , 3 ... supported by the silo 1
The load W is supplied onto the loading platform 2 from the chute port of 0, and a predetermined amount of the load W is loaded while weighing as in the first embodiment. Then, the vehicle 1B is moved to move the chassis frame 1
2 is also inserted into the lower surface side of the bottom plate 21 of the luggage carrier 2, and the vehicle 1B and the luggage carrier 2 are coupled by the coupling member 13. Then, by reducing the jacks 3, 3, ... and grounding the wheels 22 on the loading platform 2 side, the loading platform 2 can be towed by the vehicle 1B as shown in FIG.

In the mobile scale of the second embodiment, when the load W to be loaded on the loading platform 2 is weighed, the vehicle 1B having a large weight can be separated and the load W can be accurately measured. It can be weighed and can be applied even when relatively high precision weighing is required. Further, in this case, if a plurality of loading platforms (with weighing function) 2 are used for one vehicle 1B, one vehicle 1B can be shared for moving each loading platform 2, so that the vehicle 1B is effective. Available.

The movable scale of the third embodiment shown in FIGS. 6 and 7 shows a modification of the second embodiment, and like the second embodiment, the vehicle 1C and the bed 2 can be separated. Has become. In addition, in the mobile scale of the third embodiment, the vehicle 1
The chassis frame 12 of C has a length substantially the same as the length of the luggage carrier 2. .. are attached to the lower surface of the bottom plate 21 of the luggage carrier 2 near the four corners thereof. The upper ends of the respective support legs 23 are pivotally attached to the lower surface of the bottom plate 21 of the loading platform, and are vertically moved between the upper storage position (the position shown by the solid line) and the vertical position 23 '(the position shown by the chain line). I am allowed to rock. In addition, each support leg 23,
It can be locked by an appropriate lock mechanism in the vertical posture shown by the reference numeral 23 '. Also, each support leg 23, 23
A caster 24 capable of grounding on the ground GL is attached to each of the tip end portions of. And each support leg 2
When the jacks 3, 3 ... Are contracted while the vertical position is maintained, the casters 24, 24.
· Is grounded so that the loading platform 2 can be pushed and moved. Further, a pair of guide rollers 26 are attached to the lower surface of the loading platform bottom plate 21 at positions where the chassis frame 12 of the vehicle 1C is sandwiched from the left and right outer sides. The pair of guide rollers 26 may be attached at a plurality of positions in the length direction of the bed. As will be described later, the guide rollers 26 (there are a pair of left and right) are used to mount the chassis frame 12 of the vehicle 1C on the loading platform bottom plate 2.
It also serves as a guide when the lower side of 1 is made to slip.

In the movable scale of the third embodiment, in order to position the loading platform 2 directly under the chute opening of the silo 10, for example, the casters 24 of the supporting legs 23, 23 ... The position can be adjusted by manually pushing. Further, in the movable scale of the third embodiment, similarly to the second embodiment, the load W is loaded on the load carrier 2 while the load carrier 2 is supported by the four jacks 3, 3 ,. Then, load detection signals (S _{1 to} S ₄ ) are transmitted from the load detectors 4, 4 ..., respectively, and the load amount is displayed on the display device 6 after being calculated by the calculation device 5 based on the load detection signals. Will be displayed. Then, after weighing, the chassis frame 1 of the vehicle 1C as shown in FIG.
2 is also inserted into the lower surface side of the bottom plate 21 of the loading platform 2 (at this time, the pair of left and right guide rollers 26 are connected to the chassis frame 1).
, And the respective jacks 3, 3, ... are reduced, so that the loading platform 2 can be mounted on the chassis frame 12. After the loading platform 2 is mounted on the chassis frame 12, the loading platform 2 is mounted on the chassis frame 12 with a set bolt or the like.
The vehicle 1C and the luggage carrier 2 can be integrated by fixing the vehicle 1C to the vehicle. In the case of the third embodiment as well, similar to the case of the second embodiment, the function and effect obtained by dividing the vehicle and the bed can be obtained.

The movable scale of the fourth embodiment shown in FIG. 8 employs a truck (having the same structure as that of the first embodiment) in which the vehicle 1A and the loading platform 2 are integrated with each other. In the example, a packaging device 7 for filling a bag (flexible bag) B with a raw material (for example, powder or granules) is mounted on the platform 2. This packaging device 7 has an input port 71 that can be connected to the chute port of the silo 10 at the upper part, and a discharge port 72 to which the opening of the bag B is connected at the lower part. A shutter device 73 for adjusting the amount of raw material supplied from the silo 10 side is provided at the inlet 71 portion. still,
In FIG. 8, reference numeral 74 is a cradle that supports the bag B, 75 is a discharge conveyor that is connected to the cradle 74, 76 is a dust collector, and 7 is a dust collector.
Reference numeral 7 is a control panel, and reference numeral 78 is a spirit level for detecting the horizontal inclination of the loading platform 2 (two sets are preferably used for detecting the front-back inclination and the left-right inclination).
The level 78 is necessary when it is desired to measure the load 2 in a horizontal state. After detecting the tilt of the load 2 with the level 78, the jacks 3, 3 ... The tilt of the platform 2 is corrected by adjusting the expansion and contraction.

In the fourth embodiment, the total weight of the vehicle 1A with a loading platform and the packaging device 7 is four jacks 3.
While being supported by 3 ...., the raw material from the chute port of the silo 10 is filled into the bag B through the input port 71 and the discharge port 72. As the raw material is filled into the bag B, four jacks are inserted. The load applied to 3, 3 ... increases. Then, load detection values (electrical signals S _{1 to} S ₄ ) are transmitted from the load detectors 4, 4, ... To the arithmetic unit 5 side based on the loads applied to the jacks 3, 3 ,. The calculation value calculated by the calculation device 5 based on the detection signal is output to the display device 6. Then, when the display device 6 displays the predetermined weight, the shutter device 73 is closed to stop the supply of the raw material. When the bag B is filled with a predetermined amount of the raw material, the raw material-containing bag is removed from the discharge port 72 and transferred to the outside of the loading platform 2 via the discharge conveyor 75. Then, a new bag B is attached to the discharge port 72 and the weighing operation is performed in the same manner.

In the mobile scale of the fourth embodiment, the vehicle 1A can be moved together with the packaging device 7. For example, when a large number of silos 10 are installed in the facility, the movement with the packaging device 7 is performed. The formula scale can be cycled through each silo 10 section. Therefore, it is not necessary to install a packaging device for each silo (it can be shared by a mobile scale with one packaging device 7), and the space below the silo can be effectively used. In addition, the packaging device 7 of the fourth embodiment is used for the loading platform 2 of the vehicle and loading platform separation type
It can also be mounted on (for example, those of the second or third embodiment), in which case the loading platform 2 carrying the packaging device 7 can be moved by another vehicle.

The movable scale of the fifth embodiment shown in FIGS. 9 and 10 employs a truck in which the vehicle 1A and the bed 2 are integrated as in the first embodiment. In the movable scale of the fifth embodiment, a pair of left and right jacks 3 and 3 are used at the rear end of the truck carrier 2, and load detectors 4 and 4 are provided on the jacks 3 and 3, respectively. There is. In the mobile scale of the fifth embodiment, when the jacks 3 are extended with the left and right front wheels (serving means) 14 of the vehicle 1A grounded, as shown in FIG. Each of the jacks 3 and 3 bears part of the weight of the truck, and at that time, the load detection values (load detection signals S _{3 to} S ₄ ) are transmitted from the load detectors 4 and 4 to the arithmetic unit 5. At the same time, the calculation device 5 calculates the weight based on the detected load values, and then the calculated weight is displayed on the display device 6. Incidentally, in the mobile scale of the fifth embodiment, as shown in FIG. 10, jacks 3 and 3 and load detectors 4 and 4 are provided at two positions on the left and right of the rear end of the cargo bed of a truck (vehicle with a cargo bed). However,
The jack 3 may be provided at only one position as long as it can stably support the truck, and in that case, the load detector 4 is also 1
I need one. Further, the jack 3 is provided on the front side of the truck (at one location or at two locations), and the jack 3 and the vehicle 1 are provided at the time of weighing.
The truck may be supported by the left and right rear wheels 14, 14 of A.

In the mobile scale of the fifth embodiment, since the weight of the load W on the loading platform 2 is measured only on one side behind the loading platform, the weighing accuracy becomes considerably rough, but the weighing target is, for example, a truck. The present invention is sufficiently applicable to weighing to the extent that it is sufficient to determine whether or not the load W is overweight, as in the case of earth and sand loaded in a (dump truck).

The mobile scale according to the present invention is not limited to the above-mentioned embodiments, and any suitable structure may be adopted as long as it is necessary to weigh the load W loaded on the bed 2. be able to.

[Brief description of drawings]

FIG. 1 is a front view of a mobile scale according to a first embodiment of the present invention.

FIG. 2 is a plan view of FIG.

3 is an explanatory view of a main part of the movable scale of FIG.

FIG. 4 is a front view of a movable scale according to a second embodiment of the present invention.

5 is a state change diagram of FIG. 4. FIG.

FIG. 6 is a front view of a movable scale according to a third embodiment of the present invention.

FIG. 7 is a state change diagram of FIG.

FIG. 8 is a front view of a movable scale according to a fourth embodiment of the present invention.

FIG. 9 is a front view of a mobile scale according to a fifth embodiment of the present invention.

FIG. 10 is a plan view of FIG.

FIG. 11 is an explanatory diagram of a conventional ground-based truck scale.

[Explanation of symbols]

1A, 1B and 1C are vehicles, 2 is a bed, 3 is a jack, 4 is a load detector, 5 is an arithmetic unit, 6 is a display unit,
Reference numeral 12 is a chassis frame, 14 is a support means (vehicle wheels), 22 is a carrier wheel, and W is a load.

Claims (5)

[Claims] 1. A jack (3,3 ..) capable of stably supporting the cargo bed (2) by being grounded on the ground at three or four locations of the cargo bed (2) for loading a cargo (W).
.) Are provided, and the jacks (3,3 ..) are supported by the jacks (3,3.
Each load detector (4, 4 ...) For detecting the load applied to each
The calculation device (5) for calculating the total load applied to each jack (3, 3 ...) And the calculation value calculated by the calculation device (5) based on each load detection value detected by The loading platform (2) is provided with a display device (6) for displaying, and the loading platform (2) is moved by a self-propelled vehicle (1A, 1B, 1C) with the jacks (3, 3 ...) Separated from the ground. A mobile scale characterized by the fact that it is possible. 2. The mobile scale according to claim 1, wherein the loading platform (2) and the vehicle (1A) are integrally formed so that the vehicle (1A) can be supported by the jacks (3, 3 ...). A mobile scale characterized by the fact that 3. The mobile scale according to claim 1, wherein the vehicle (1B) and the cargo bed (2) are separable from each other, and the cargo bed (2) is provided with wheels (22). A mobile scale, wherein the vehicle can be towed by the vehicle (1B). 4. The mobile scale according to claim 1, wherein the vehicle (1C) and the loading platform (2) are separable, while the loading platform (2) is mounted on a chassis frame (12) of the vehicle (1C). A mobile scale characterized in that it can be loaded and unloaded freely. 5. A support (2) for loading a load (W) is supported on the ground at one end side in the longitudinal direction by a suitable support means (14), while the support means (2) of the load (2) is supported. 14) The cargo bed (2) is grounded at one or two positions near the end on the side opposite to the supporting part by grounding on the ground.
A load detector (4) for detecting a load applied to the jack (3) in a state where the jack (3) supports the loading platform (2) by providing a jack (3) capable of supporting one end side of the jack (3).
And a calculation device (5) for calculating a load applied to the jack (3) based on the load detection value detected by the load detector (4), and a calculation value calculated by the calculation device (5) Is equipped with a display device (6) for displaying, and the loading platform (2) is movable by a self-propelled vehicle (1A) in a state where the jack (3) is separated from the ground. Mobile scale.