JPH09170944A - Apparatus for measuring weight for load truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promptly and correctly measure a weight of a load by setting a measuring stage having a built-in load cell and capable of measuring the weight of the load to be loaded, a supporting device for suspending the measuring stage to a pallet of a load truck, etc. SOLUTION: A measuring device 3 has a measuring stage 4 in which a load cell 5 is incorporated. A worker can do loading on the stage 4. The measuring stage 4 has a pair of bar load cells 5, 5 set parallel to each other and a coupling plate 6. A top plate 7 stretches over the load cells 5 and 5. A weight acting to the top plate 7 is detected by the load cells 5, 5. For instance, when a worker M rides on the measuring stage 4 with holding a garbage bag, a sum of weights of the worker M and the garbage bag is detected by the load cells 5, 5. A net weight of the garbage bag is calculated by subtracting the weight of the worker from the sum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weight measuring apparatus for a cargo handling vehicle, and more particularly to a weight for a cargo handling vehicle which enables an operator to immediately measure the weight of the cargo to be loaded when loading the cargo into the vehicle. Regarding measuring equipment.

[0002]

2. Description of the Related Art Generally, in a cargo handling vehicle, transportation costs and processing costs are calculated on the basis of the weight of luggage to be carried.
Therefore, the weight of the cargo is measured before or after the cargo is loaded onto the vehicle. For example, a garbage truck collects dust contained in a container placed in a predetermined place while traveling in the city, and finally measures the total weight with the dust loaded, from the value of the total weight, The net weight of the dust is calculated by subtracting the known vehicle weight.

On the other hand, with the increase in the charge for dust disposal, there is an increasing need to individually and promptly and accurately calculate the charges to be paid by the person who discharged the dust. To solve this problem, the load cell detects the reaction force that acts on the lifting arm when throwing the dust in a specific container into the packing box, and the weight of the dust is measured based on this. A technique has been proposed (see Japanese Patent Application No. 5-72023).

[0004]

However, according to this prior art, in addition to requiring an expensive weighing container having a predetermined size and shape, a space such as a storage place for the weighing container is secured. There was a problem that had to be. Further, since this dust container is usually a deep container, it has a problem that it is difficult to discharge lightweight dust such as paper, and the work efficiency is poor due to manual scraping work.

Therefore, an object of the present invention is to provide an apparatus for measuring the weight of a load so that the weight of the load can be measured immediately and accurately when an operator loads a cargo into a packing box. .

[0006]

In order to achieve this object, the invention described in claim 1 has a built-in load cell,
A weighing platform capable of measuring the weight of the load to be loaded, a support device for suspending the weighing platform with respect to the cargo box of the cargo carrier, and a drive device for moving the weighing platform up and down between the weighing position and the storage position. It is characterized by comprising.

According to the second aspect of the present invention, the support link mechanism includes a support arm for pin-connecting the rear end of the weighing platform and the body of the cargo handling vehicle, and one end of the weighing platform. And a lifting drive cylinder device in which the operating end of the piston rod is connected to the other end of the lifting arm.

According to the third aspect of the invention, a guide roller is attached to the other end of the elevating arm, and the guide roller rolls along an arcuate guide groove formed on the vehicle body side. It is fitted in a guide groove so that it can move.

Further, according to the invention described in claim 4, the supporting link mechanism is mounted on the end of the elevating arm and the elevating arm rigidly connected to the rear end of the weighing table at a predetermined angle. Paired guide rollers, a pair of substantially parallel guide grooves formed on the vehicle body side so that these guide rollers can roll, and an elevating drive that is connected to the end of the elevating arm and moves the elevating arm up and down. And a cylinder device.

According to the fifth aspect of the invention, the support link mechanism includes an elevating arm whose one end is connected to the rear end of the weighing platform, and the other end of the elevating arm and the vehicle body. With a pin connection between them, a support link rod whose shaft length does not change,
A drive cylinder device having a variable axial length is pin-connected between the middle of the elevating arm and the vehicle body.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a cargo handling vehicle according to the present invention will be described below with reference to the drawings. FIG. 1 shows an example in which the present invention is applied to a refuse collecting vehicle, and reference numeral 1 in the drawing denotes a part of a packing box of the refuse collecting vehicle. A tailgate 2 is installed at the rear of the luggage box 1 to temporarily store the dust in the sump and load the dust into the luggage 1 by a scraping device (not shown). In order to measure the weight of the dust loaded on the tailgate 2, a weighing device 3 according to the present invention is provided at the rear of the luggage box 1 of the dust truck.

The weighing device 3 has a weighing platform 4 on which an operator can ride and carry out a loading operation. The weighing platform 4 is a rectangular plate-shaped body having a width substantially equal to the lateral width of the vehicle, and has a load cell incorporated therein. That is, as is clear from FIG. 2, the weighing platform 4 includes a pair of bar-type load cells 5 placed in parallel.
5 and a connecting plate 6 for connecting them, and a top plate 7 is installed on the load cells 5, 5. As a result, the weight acting on the top plate 7 is detected by the load cells 5, 5 and taken out via the lead wire 5a.

On the other hand, both ends of the rear portion of the weighing table 4 are connected to the lower portion of the tailgate 2 by support arms 8. That is, the tip of the support arm 8 is pivotally attached to the weighing platform 4 via the pin 9, while the rear end of the support arm 8 is pin-connected to the fixed bracket 11 via the pin 10. Further, the tip of the elevating arm 12 is coupled to the side surface of the weighing platform 4 via a pin 13, and the guide roller 14 is rotatably supported at the other end of the elevating arm 12. The guide roller 14 is fitted in an arcuate guide groove 15 formed on the side plate of the tailgate 2.

A tip end of a piston rod 17 of a single-axis operation type up-and-down driving cylinder device 16 is pin-connected to a central support shaft of the guide roller 14. Since the present invention is configured as described above, when the piston rod 17 of the lifting drive cylinder device 16 is expanded and contracted, the weighing platform 4 is moved to the position shown in FIG.
It is possible to move up and down between the weighing position grounded on the road surface as shown in FIG. 3 and the storage position shown in FIG. And
At the weighing position shown in FIG. 1, when the worker M rides on the weighing platform 4 while holding the dust bag, the total value of the weight of the worker M and the weight of the dust bag is detected by the load cells 5, 5. By subtracting the weight, the net weight of the dust bag can be calculated. 4 shows the rear surface of the garbage truck, the left half of the drawing shows the storage state of the weighing platform 4, and the right half of the drawing shows the weighing state of the weighing platform 4.

Further, according to another embodiment of the present invention, the weighing platform 4 may be divided into a left half and a right half so as to be independently movable, without matching the entire width of the vehicle.

Next, another embodiment of the present invention will be described with reference to FIGS. In this embodiment, an elevating arm 18 is rigidly connected to a side end of a weighing platform 4 having a built-in load cell at a predetermined angle α, and an end of the elevating arm 18 is a pair of guide grooves formed on a side plate of the tailgate 2. It is fitted with 19, 20. Also, the lifting arm 18
A piston rod 22 of a lifting drive cylinder device 21 is pin-connected to the upper end of the. According to this embodiment,
By driving the lifting drive cylinder device 21, the weighing platform 4 can be moved between the weighing position shown in FIG. 5 and the storage position shown in FIG. 6 while maintaining the horizontal state.

Next, another embodiment of the present invention will be described with reference to FIGS. In this embodiment, the support link mechanism of the weighing platform 4 includes a lifting arm 8 whose one end is rigidly coupled to the rear end of the weighing platform 4 so that the angle θ is constant, and the other end of the lifting arm 8 and the vehicle body. And a support link rod 23 having an invariable axial length, and a pin coupling between the middle of the elevating arm 8 and the vehicle body so that the piston rod can be retracted and extended to thereby change the axial length. And a device 24. According to this embodiment, when the drive cylinder device 24 is contracted, the weighing platform 4 is lifted to the position shown in the figure, as shown in FIG. If the rear opening of the table gate is closed at this position, the weighing platform 4 can also serve as a hopper door.

The embodiment shown in FIG. 9 is an example in which the weighing table 4 can be moved around the pin 9 within a predetermined angle range, and a stopper 25 is provided at the end of the elevating arm 8 so as to project, while In the example of the table 4, a U-shaped stopper receiver 26 is fixed. Then, springs 27a and 27b are mounted between the stopper 25 and the stopper receiver 26.

Although the above-described embodiments have shown examples in which the present invention is applied to a refuse collection vehicle, the present invention is not limited to this, and general cargo handling transportation such as trucks and container vehicles is possible. It is widely applicable to vehicles.

[0020]

As is apparent from the above description, according to the present invention, when an operator loads a load into a packing box of a vehicle,
The weight of the cargo can be measured immediately and individually and accurately. Further, since the specific measuring container is not required at all, the cost of the measuring container itself can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing a garbage truck equipped with a weight measuring device according to the present invention.

FIG. 2 is a perspective view showing a weighing platform.

FIG. 3 is a side view showing a stored state of the weighing platform.

FIG. 4 is a rear view of the garbage truck showing a combination of the weighing position and the storage position of the weighing platform.

FIG. 5 is a side view showing a weighing state of a weighing platform of the refuse collecting vehicle according to another embodiment of the present invention.

FIG. 6 is a side view showing a stored state of a weighing platform of the refuse collecting vehicle according to the embodiment.

FIG. 7 is a side view showing a weighing state of a weighing platform of the refuse collecting vehicle according to another embodiment of the present invention.

FIG. 8 is a side view showing a storage state of the weighing platform of the refuse collecting vehicle according to the embodiment.

FIG. 9 is a side view showing an enlarged part A of FIG.

[Explanation of symbols]

 1 Packing Box 3 Weighing Device 4 Weighing Platform 5 Load Cell 8 Support Arm 12 Elevating Arm 16 Elevating Drive Cylinder Device 18 Elevating Arm 21 Elevating Drive Cylinder Device

Claims (6)

[Claims] 1. A weighing platform having a built-in load cell, capable of measuring the weight of a load to be loaded, a support link mechanism for suspending the weighing platform so that it can be raised and lowered with respect to a cargo box of a cargo handling vehicle, and the weighing platform. A weight measuring device for a cargo handling vehicle, comprising: a drive device for moving up and down between a weighing position and a storage position. 2. The support link mechanism includes a support arm for pin-connecting a rear end of the weighing platform and a vehicle body of a cargo handling vehicle, and one end thereof pin-coupled to a middle of a side end of the weighing platform. 2. The weight measuring device for a cargo handling vehicle according to claim 1, further comprising: an elevating arm, and an elevating drive cylinder device in which an operating end of a piston rod is connected to the other end of the elevating arm. 3. A guide roller is attached to the other end of the elevating arm, and the guide roller is fitted in the guide groove so that the guide roller can roll along an arc-shaped guide groove formed on the vehicle body side. The weight measuring device for a cargo handling vehicle according to claim 2, wherein 4. The lifting and lowering arm, wherein the support link mechanism is rigidly connected to a rear end portion of the weighing table at a predetermined angle,
A pair of guide rollers attached to the ends of the elevating arm, a pair of substantially parallel guide grooves formed on the vehicle body side so that these guide rollers can roll, and a pair of guide rollers connected to the ends of the elevating arm to move up and down. 2. The weight measuring device for a cargo handling vehicle according to claim 1, further comprising an up-and-down drive cylinder device that moves the arm up and down. 5. The support link mechanism has a lifting arm whose one end is connected to a rear end portion of the weighing platform, and a pin connection between the other end of the lifting arm and the vehicle body so that the axial length does not change. 2. The weight measuring apparatus for a cargo handling vehicle according to claim 1, further comprising a link rod, and a drive cylinder device having a variable axial length, which is pin-connected between the middle of the lifting arm and the vehicle body. 6. The weight measuring apparatus for a cargo handling vehicle according to claim 5, wherein the weighing platform is pin-coupled to the end of the elevating arm so that the weighing platform can be rotated over a predetermined angle range.