JP5028146B2 - Cargo handling vehicle - Google Patents

Description

  The present invention relates to a cargo handling vehicle. More specifically, a cargo handling vehicle equipped with a detachable container that allows a container mounted on a chassis (chassis frame) to be loaded and unloaded between the chassis and the ground. The present invention relates to a cargo handling vehicle capable of weighing.

  Conventionally, a detachable container that has a lift arm pivotally supported back and forth on a cargo handling frame mounted on a chassis frame and a hook arm that can be pivoted back and forth at the tip of the lift arm has been provided. Cargo handling vehicles equipped are known. In this cargo handling vehicle, the hook provided at the tip of the hook arm is detachably engaged with the engaging portion of the container, and the lift arm is moved up and down to lower the container from the cargo handling frame to the ground. Or a container placed on the ground is loaded onto the cargo handling frame.

Such cargo handling vehicles are mainly used to transport waste loaded in containers at business establishments to processing facilities or disposal sites. Conventionally, processing charges have been set for each container. Since the cost of transportation and processing varies depending on the amount of contents (contents), recently, charging is performed according to the weight of the waste loaded in the container.
In this case, if a weight meter such as a load cell is attached to the container itself in order to measure the contents in the container, the weight meter is required for all containers, which is expensive.

  Therefore, it has been proposed that when a load cell is mounted on a vehicle and the container is loaded on the vehicle body (traveling position), the weight of the container is measured by the load cell (see Patent Document 1). In the cargo handling vehicle described in Patent Document 1, load cells are provided at four locations on the front, rear, left, and right sides of the subframe fixed on the chassis frame, and the detection values of the four load cells are detected at the travel position where the container is completely loaded on the vehicle body. Weigh the container from

JP 2007-15445 A

However, in the cargo handling vehicle described in Patent Document 1, in order to weigh a container placed on the ground, it is necessary to load the container to the traveling position by the cargo handling apparatus, and it takes a lot of time to weigh the container. Cost.
In particular, in order to prevent the occurrence of traffic accidents due to overloading and to suppress the occurrence of noise and vibration, it is necessary to strictly observe the loading weight stipulated by laws and regulations. Until the container is completely loaded onto the car body, it cannot be determined whether it is overloaded.
Further, when weighing is performed at the time when the container mounting is completed (the state at the time of traveling), in the case of overloading, the container must be lowered to the ground from the state at the time of traveling, and the work time becomes long.

  This invention is made | formed in view of such a situation, and can perform a container measurement operation | work cheaply and efficiently by measuring together a container and the cargo handling apparatus which loads and unloads the said container. The purpose is to provide a cargo handling vehicle that can be used.

The cargo handling vehicle of the present invention has a cab, a hook arm and a lift arm for loading and unloading the container between the ground and the vehicle body at the rear of the cab, and a cargo handling frame on which the container is detachably mounted. A cargo handling vehicle, wherein each of the cargo handling devices is mounted on a chassis frame, and the weight of the container is supported only by the cargo handling device,
A load cell disposed behind the cab on the chassis frame and supporting a cargo handling frame of the cargo handling device;
And a control device that displays a result obtained by subtracting the weight of the cargo handling device from the total weight of the container and the cargo handling device loaded on the load cell.

  In the cargo handling vehicle of the present invention, the load cell that supports the cargo handling device is disposed on the chassis frame, and the control device subtracts the weight of the cargo handling device from the weight loaded on the load cell, and the obtained result is When the container placed on the ground leaves the ground and the weight of the container is supported by the cargo handling device, that is, while the container is being loaded, the total weight of the container and the cargo handling device is measured. can do. Therefore, the weight of the container can be grasped in a short time as compared with the weighing at the conventional traveling position, and the overload can be checked.

  According to the cargo handling vehicle of the present invention, the container weighing operation can be performed inexpensively and efficiently by weighing together the container and the cargo handling device that loads and unloads the container.

Hereinafter, embodiments of a cargo handling vehicle according to the present invention will be described in detail with reference to the accompanying drawings.
FIGS. 1 to 5 are side explanatory views of a cargo handling vehicle V according to an embodiment of the present invention, in a state when the loading of the container C is completed (during travel) (FIG. 1), a state immediately before the loading of the container C is started. (FIG. 2), a state during loading of container C (FIGS. 3 to 4), and a state during dumping of container C (FIG. 5) are shown.

  The cargo handling vehicle V has a cargo handling device 1 that loads and unloads a container C between the ground and a vehicle body mounted on a chassis frame 2, and a cab D is provided at the front of the chassis frame 2. A cargo handling frame 4 constituting the cargo handling apparatus 1 is mounted on the chassis frame 2 behind the cab D via a measuring frame 3 described in detail later.

  As shown in FIG. 6, the cargo handling frame 4 has a rectangular frame shape composed of left and right (right and left in the vehicle traveling direction; the same applies hereinafter) vertical girder 4a and a plurality of horizontal girder 4b connecting the vertical girder 4a. Is formed. Guide rollers 5 are rotatably supported on the left and right of the rear end of the cargo handling frame 4. By these guide rollers 5, the container C that is detachably mounted on the cargo handling frame 4 is guided and guided.

  A dump arm 6 is provided at a rear portion of the cargo handling frame 4 so as to be tiltable rearward. The dump arm 6 is formed in a fork shape in plan view in which a horizontal beam is integrally formed at the rear ends of the left and right vertical beams and the front end is opened, and the rear end thereof is connected to the rotation axis of the left and right guide rollers 5. It is pivotally supported so that it can tilt in the front-rear direction around the same axis. A rear end (base end) of a lift arm 7 made of a single rectangular cylinder is pivotally supported by a middle portion near the front end portion of the dump arm 6 so as to be able to swing up and down in the front-rear direction. .

  The lift arm 7 extends in the front-rear direction at the left and right intermediate part of the cargo handling frame 4, and the rear part overlaps the dump arm 6 in the front-rear direction, but most of the lift arm 7 extends forward from the dump arm 6. ing. A pair of lift cylinders 8 composed of backward hydraulic cylinders are connected between the front part of the cargo handling frame 4 and the intermediate part of the lift arm 7. These lift cylinders 8 extend in the front-rear direction on both the left and right sides of the lift arm 7, and as shown in FIGS. Can be swung up and down.

  The base end of the hook arm 10 is connected to the front end portion of the lift arm 7 so as to be rotatable in the front-rear direction. The hook arm 10 is formed in an L shape when viewed from the side, and a hook 11 is integrally provided at the tip thereof. The hook 11 is detachable from a lift bar 22 provided at the upper front of the container C.

  Between the front part of the lift arm 7 and the intermediate part of the hook arm 10, a hook cylinder 12, which is a drive hydraulic unit for driving the hook arm 10, is connected. . By extending and contracting the hook cylinder 12, the hook arm 10 can be raised and lowered in the front-rear direction of the chassis frame 2, whereby the container C can be moved rearward on the cargo handling frame 4.

On the left and right sides of the lift arm 7, the hook arm 10 and the dump arm 6, the lift arm 7 and the dump arm 6 are fixed integrally in a straight line in the front-rear direction across the arms. A pair of left and right securing mechanisms (not shown) are provided for releasing.
The container C is formed in a box shape with a lid, and both front and rear sides of the container C are reinforced by reinforcing girders 20. The rear surface of the container C is open, and the open surface is closed by the rear gate 21. Further, a lift bar 22 that is an engaging portion that can be engaged with and disengaged from the hook 11 of the hook arm 10 is provided on the upper portion of the front wall of the container C. Before and after the bottom of the container C, a plurality of traveling wheels 23 made of casters are pivotally supported.

In the cargo handling vehicle V according to the present embodiment, the cargo handling device 1 is supported only by the load cell L, the weight of the container C and the cargo handling device 1 is measured using the load cell L, and the load cell L is The weighing frame 3 is disposed on the chassis frame 2.
7 to 8, the measuring frame 3 is formed in a substantially frame shape by left and right vertical members 3a and four horizontal members 3b connecting the vertical members 3a. The vertical member 3a and the horizontal member 3b are both made of a rectangular cylinder and are joined to each other by welding. Concave portions 30 for arranging the load cells L are formed on the front left and right and the rear left and right of the weighing frame 3. That is, the recesses 30 are formed at four positions on the right and left front portions and on the left and right sides of the weighing frame 3, and the load cells L are disposed in the respective recesses 30.

  FIG. 11 shows a recess 30 formed in the front part of the measuring frame 3, and FIG. 12 shows a recess 30 formed in the rear part of the measuring frame 3. At the front part of the measuring frame 3, the end side surface of the horizontal member 3 b is welded to the cut end surface of the vertical member 3 a, and the end side surfaces of the pair of horizontal members 3 b (the side surface where the cut end surface of the vertical member 3 a is welded) A first reinforcing member 31 made of a steel plate having an L-shaped cross section is welded between the opposite side surfaces. A mounting table 32 made of a strip-shaped steel plate is welded to the upper surface of the short side of the first reinforcing member 31. Further, a second reinforcing member 33 made of steel having a substantially U-shaped cross section is welded to the back surface of the long side of the first reinforcing member 31 (the surface opposite to the side on which the short side is extended). . As shown in FIG. 9, the second reinforcing member 33 is welded to the first reinforcing member 31 so that the opening side thereof is in contact with the back surface of the long side of the first reinforcing member 31.

  A recess 30 for arranging the load cell L is formed by the mounting table 32 and the long side of the first reinforcing member 31. In FIG. 11, reference numeral 34 denotes a reinforcing material made of a triangular steel plate for reinforcing the joint portion between the vertical member 3 a and the horizontal member 3 b.

On the other hand, up to the concave portion 30 on the vehicle rear side of the measuring frame 3 is constituted by a vertical member 3a, and a lid member 40 made of a square steel plate is welded to the end face, and the lid member 40 has an L-shaped cross section. A first reinforcing member 41 made of mold steel is welded. And the rear-end part of this 1st reinforcement member 41 is welded to the edge part side surface of the horizontal member 3b. A mounting table 42 made of a strip-shaped steel plate is welded to the upper surface of the short side of the first reinforcing member 41, and a steel plate having a substantially U-shaped cross section is formed on the back surface of the long side of the first reinforcing member 41. The second reinforcing member 43 is welded. As shown in FIG. 10, the second reinforcing member 43 is welded to the first reinforcing member 41 so that the opening side thereof is in contact with the back surface of the long side of the first reinforcing member 41. In the rear part of the weighing frame 3, in order to secure a space for attaching a U-bolt (not shown) for securing the chassis frame 2 and the weighing frame 3, a lateral member 3 b is provided on the rear surface of the second reinforcing member 43. The cut end face is welded.
In the present embodiment, the reinforcing portion of the concave portion 30, which includes the first reinforcing members 31 and 41 and the second reinforcing members 41 and 43, is provided on the inner side in the vehicle width direction of the concave portion 30. Therefore, it is possible to arrange the reinforcing portion using the dead space.

A recess 30 for arranging the load cell L is formed by the mounting table 42 and the long side of the first reinforcing member 41. In FIG. 12, reference numeral 44 denotes a reinforcing material made of a triangular steel plate for reinforcing the joint portion between the vertical member 3a and the horizontal member 3b.
The dimensions of the four recesses 30 in the longitudinal direction of the vehicle are all the same as the dimensions of the load cell L in the longitudinal direction, which will be described later, and the lateral member 3b is fixed in front of and behind each recess 30. As a result, even if the entire measuring frame 3 is twisted, the concave portion 30 sandwiched between the lateral members 3b and the reinforcing portion composed of the first reinforcing members 31, 41 and the second reinforcing members 33, 43 are difficult to twist. As a result, the torsion of the load cell L arranged on the upper surface of the recess 30 can be reduced, and the detection error can be reduced.

Further, as shown in FIGS. 9 and 11, the first reinforcing member 31 and the second reinforcing member 33 are both located above the chassis frame 2 and below the cargo handling frame 4. In other words, neither the first reinforcing member 31 nor the second reinforcing member 33 protrudes downward from the upper end surface of the chassis frame 2 and protrudes upward from the lower end surface of the cargo handling frame 4. Thus, since both the reinforcing members are arranged so as not to interfere, the chassis frame 2 and the cargo handling frame 4 can be easily designed.
In addition, since the mounting table 32 is formed of a solid plate, deformation of the mounting table 32 can be suppressed, and thereby a measurement error due to the load cell L can be reduced. Furthermore, since the mounting table 32 is made of a solid plate, a screw hole can be formed in the mounting table 32 and the load cell L can be fixed with a bolt. Therefore, the load cell L can be fixed without causing the head of the bolt or the like to protrude toward the chassis frame 2 side.

  FIGS. 13A and 13B are explanatory views of the load cells L arranged in the four concave portions 30, respectively. FIG. 13A is a plan explanatory view and FIG. 13B is a side explanatory view. The load cell L includes a lower member 51 made of a strip-shaped steel plate fixed to the mounting tables 32 and 42 and a prismatic upper member 53 fixed to the upper surface of the lower member 51 by a cap bolt 52. In the vicinity of the center of the lower surface of the upper member 53, a recess or notch is formed over the entire width of the upper member 53. When the upper member 53 is disposed on the upper surface of the lower member 51, the recess or notch A slit 54 is formed by the upper surface of the member 51. A strain gauge 55 is attached to the upper surface of the slit 54. The strain gauge 55 is connected to the other end of a wiring whose one end is connected to an input unit of a control device (not shown).

  The load cell L outputs a voltage value corresponding to the load applied to itself, and inputs the output voltage of the load cell L to the control device, so that the load applied to each load cell L can be known. In the case of the form, the control device can calculate the total weight of the container C and the cargo handling device 1 by performing the calculation of summing up the loads on the four load cells L. As described above, the load cell L is provided with the slit 54, and when a load acts on the load cell L, as schematically shown in FIG. 14, a strain gauge attached to the upper surface of the slit 54 is provided. 55 is also deformed. When the compressive load Cp is applied to the load cell L, as shown in FIG. 14A, the strain gauge 55 is pulled and the resistance value of the strain gauge 55 is increased, so that the output voltage V of the load cell L is increased. To increase. This increase rate can be set to +1.7 mV for a compression load of 10 t, for example. On the other hand, when the tensile load T acts on the load cell L, as shown in FIG. 14B, the strain gauge 55 is compressively deformed, and the resistance value of the strain gauge 55 is decreased, whereby the output voltage of the load cell L is reduced. V decreases. This reduction rate can be set to -1.7 mV for a compression load of 10 t, for example. Note that the output voltage in a state where no load is applied to the load cell L is ± 0V.

  The control device subtracts the weight of the cargo handling device 1 stored in advance in the storage means of the control device from the total weight of the container C and the cargo handling device 1 obtained by the load cell L, that is, the weight of the load, The weight of the container C (the weight of the container itself + the weight of the contents) is calculated, and the weight of the contents loaded in the container C is calculated by subtracting the weight of the empty container C from this value. . The weight of the obtained container C and the weight of the contents are displayed on display means such as a liquid crystal display. From the displayed weight of the container C, the user can easily know whether or not it is overloaded. It should be noted that an alarm may be issued to the user using an alarm means such as a lamp or a buzzer when overloaded. Further, the weight of the contents is used when calculating the processing cost.

Next, loading operation and unloading operation of the container C in the above-described cargo handling vehicle V will be described.
First, when unloading the container C from the vehicle, when the hook arm 10 is tilted rearward by the extension operation of the hook cylinder 12 from the state in which the container C is mounted on the chassis frame 2 of the cargo handling vehicle V (see FIG. 1), The container C is pushed rearward on the left and right guide rollers 5 by the hook arm 10 and moves rearward. When the hook arm 10 is further rotated rearward, the securing device is released, and the lift arm 7 can freely rotate with respect to the dump arm 6.

  Next, when the lift cylinder 8 is extended, the lift arm 7 tilts together with the hook arm 10. As a result, the container C is guided by the left and right guide rollers 5 and moves rearward on the four chassis frames 2, and then the container C moves rearward with the rotation center of the left and right guide rollers 5 as a fulcrum. Land on the ground (see FIG. 3).

  When the lift cylinder 8 continues to extend and extends to the rear end position (see FIG. 2), the hook arm 10 is directed downward and the container C is lowered to the ground. Here, the container C is separated from the cargo handling vehicle V if the hook 11 at the tip of the hook arm 10 is removed from the lift bar 22.

  If the lift cylinder 8 is extended while the container C is mounted on the cargo handling frame 4, that is, the hook arm 10 is in the retracted position (see FIG. 1), the lashing device is in the lashed state. Since the dump arm 6 and the lift arm 7 are fixed and secured together, as shown in FIG. 4, the arms 6 and 7 are integrally tilted rearward to raise the container C. Thus, the contents in the container C can be discharged to the outside.

On the other hand, when the container C that has been lowered to the ground is loaded on the chassis frame 2, the cargo handling vehicle V is parked in parallel at an appropriate interval in front of the container C that has been lowered to the ground, and then the lift arm 7 Is fully rotated to the rear end position together with the hook arm 10.
Next, the cargo handling vehicle V is moved backward, the hook arm 10 is swung, and the hook 11 at the tip of the hook arm 10 is engaged with the lift bar 22 at the front end of the container C. Thereafter, when the lift arm 7 is pivoted forward together with the hook arm 10 by the contraction operation of the lift cylinder 8, the container C is moved to the cargo handling vehicle V side while being lifted. 11 is supported by the ground) and eventually the bottom of the container C comes into contact with the guide roller 5 and further moves toward the cargo handling vehicle V while being guided by the guide roller 5 (see FIG. 3). The weight of the container C is supported by the hook 11, the guide roller 5, and the ground).

  When the lift cylinder 8 is continuously contracted, the traveling wheel 23 of the container C moves away from the ground (see FIG. 4). At this time, the weight of the container C is supported by the hook 11 and the guide roller 5, that is, only by the cargo handling device 1, and the weight of the container C is handled by the cargo handling device via the guide roller 5 and the hook 11 (hook arm 10). A load cell L on the weighing frame 3 is loaded with a weight of 1. Therefore, the weight of the container C can be measured when the traveling wheel 23 of the container C is separated from the ground.

  In the loading operation, the container C and the cargo handling frame 4 are engaged with each other by a locking device (not shown) by the forward movement of the container C due to the rotation of the hook arm 10 to prevent the container C from jumping up. In the cargo handling vehicle described in Patent Document 1, the load cell fixed to the subframe supports the container to measure the weight of the container. However, the subframe and the container are in contact with each other through the lock device. Therefore, the accuracy of weighing becomes low. On the other hand, in the present embodiment, the load cell L fixed to the weighing frame 3 measures the cargo handling frame 4 on which the container C is mounted, and the cargo handling frame 4 is in contact with only the container C. That is, since the weighing frame 3 and the cargo handling frame 4 do not come into contact with each other by the lock device, highly accurate weighing can be performed.

  In this embodiment, in order to avoid contact between the container C and the rear end of the vehicle, the guide roller 5 is disposed in the vicinity of the rear end of the vehicle, and the rear of the container C is disposed in the vicinity of the rear end of the vehicle. The end is supported (see FIG. 15). Further, as shown in FIG. 15, the spring hanger 17 is fixed to the chassis frame 2, and the rear wheel RT is supported on the spring hanger 17 via the leaf spring 15 to absorb the vibration of the vehicle body due to the unevenness of the ground. Yes. Since the recess 30 is disposed above the rear vehicle support 16 where the spring hanger 17 is fixed to the chassis frame 2, a part of the load can be directly supported by the rear wheel RT. Thereby, the size of the measurement frame 3 can be reduced, and the weight of the measurement frame 3 can be reduced accordingly. As a result, it is possible to reduce the weight of the cargo handling device 1 and increase the loading capacity.

Further, since the rear concave portion is disposed above the rear rear vehicle support portion 16a in the rear vehicle support portion 16, the load cell L is disposed in the rear concave portion and supports the weight of the cargo handling device 1 and the container C. And the guide roller 5 are shortened, whereby the deformation of the rear part of the cargo handling frame 4 is not small, so that the rear part of the cargo handling frame 4 can be prevented from being damaged.
The rear concave portion can be disposed above the rear front vehicle support portion 16 b in the rear vehicle support portion 16. At this time, the distance in the front-rear direction of the vehicle between the front recess and the rear recess can be shortened, the distance at which the cargo handling frame 4 is supported by the load cell is also shortened, and the deformation of the central portion of the cargo handling frame 4 is reduced. It is possible to prevent the central portion of the cargo handling frame 4 from being damaged.

  After completing the contraction operation of the lift cylinder 8, the hook cylinder 12 is contracted to rotate the hook arm 10 to the retracted position, and the loading of the container C into the cargo handling vehicle V is completed as shown in FIG. .

  In the cargo handling vehicle V according to the present embodiment, the load cell L that supports the cargo handling device 1 is disposed on the chassis frame 2, and the weight of the cargo handling device 1 is determined from the weight loaded on the load cell L by the control device. Is subtracted and the obtained result is displayed. Therefore, when the container C placed on the ground leaves the ground and the weight of the container C is supported by the cargo handling device 1, that is, container loading On the way, the total weight of the container C and the material handling device 1 can be measured. Therefore, it is possible to grasp the weight of the load in the container in a short time compared to the weighing at the conventional traveling position, and it is possible to check overloading.

  Further, since the loads of the container C and the cargo handling device 1 are transmitted to the chassis frame 2 via the weighing frame 3 disposed on the upper surface of the chassis frame 2, it is possible to prevent a concentrated load from acting on the chassis frame 2. it can. At that time, since the concave portion 30 is formed on the upper surface of the measuring frame 3 and the load cell L is arranged in the concave portion 30, an increase in the dimension in the height direction can be suppressed, thereby increasing the center of gravity of the vehicle. The running stability of the vehicle can be secured. In addition, although the rigidity of the measuring frame 3 around the concave portion 30 is reduced by forming the concave portion 30, in the present embodiment, the first reinforcing members 31, 41 and the first reinforcing member 31 are provided on the measuring frame 3 in the vicinity of the concave portion 30. Since the reinforcement part which consists of 2 reinforcement members 33 and 43 is being fixed, the rigidity around a recessed part can be improved with this reinforcement part. As a result, it is possible to prevent a concentrated load from acting on the chassis frame around the recess.

  The weighing frame 3 includes a vertical member 3a disposed on the upper surfaces of the left and right vertical girders of the chassis frame 2, and front ends and rear ends in the vehicle traveling direction of the load cell arrangement location in the recess 30 formed in the vertical member 3a. Since the horizontal members 3b that connect each other are included, the portion including the concave portion 30 has a frame structure, and as a result, the twist applied to the concave portion 30 can be resisted. Thereby, the measurement error of the load cell L due to the twist can be suppressed.

  In the embodiment described above, the weighing frame 3 is disposed on the upper surface of the chassis frame 2 and the load cell L is disposed in the recess 30 formed in the weighing frame 3. However, the rigidity of the chassis frame 2 is increased. Thus, the load cell L can be disposed directly on the chassis frame 2. In this specification, the phrase “arranged on the chassis frame” includes both the case where it is directly disposed on the chassis frame and the case where it is indirectly disposed on the chassis frame via another member.

Further, as the lift arm 7 and the hook arm 10 constituting the cargo handling device 1, other known mechanisms can be appropriately employed. For example, the hook arm 10 can be a sliding type. Furthermore, as the load cell L, a beam type (cantilever type) load cell may be used.
Moreover, the recessed part 30 of the measurement frame 3 can be provided over the full length of the vertical member 3a of the said measurement frame 3 by arrange | positioning a suitable reinforcement part.
Furthermore, the reinforcement part of the measurement frame 3 may be provided not only on the inner side in the vehicle width direction of the recess 30 but on the outer side in the vehicle width direction, or on both the inner side and the outer side.
Further, when the reinforcing portion is provided, a square pipe, a steel plate, or the like may be directly fixed to the side surface of the mounting table 32 without using the first reinforcing member 31.

It is side explanatory drawing of one embodiment of the cargo handling vehicle of this invention which shows the state at the time of completion of container loading (at the time of driving | running | working). It is side surface explanatory drawing of the cargo handling vehicle of FIG. 1 which shows the state just before the start of container loading. FIG. 2 is an explanatory side view of the cargo handling vehicle in FIG. 1, showing a state in which a traveling wheel of the container is in contact with the ground while the container is being loaded. FIG. 2 is an explanatory side view of the cargo handling vehicle of FIG. 1, showing a state in which the traveling wheels of the container are separated from the ground and the container rear portion is supported by a guide roller while the container is being loaded. It is side surface explanatory drawing of the cargo handling vehicle of FIG. 1 which shows the state at the time of dumping of a container. It is plane explanatory drawing of the cargo handling apparatus in the cargo handling vehicle shown by FIG. It is plane explanatory drawing of the vehicle width direction one side of a lightweight frame. It is side surface explanatory drawing of a lightweight frame. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a perspective explanatory view of a vehicle front side recess in a lightweight frame. It is a perspective explanatory view of a vehicle rear side recess in a lightweight frame. It is explanatory drawing of a load cell, (a) is plane explanatory drawing, (b) is side explanatory drawing. It is a figure explaining the effect | action of a load cell, (a) is an explanatory view at the time of a compressive load effect | action, (b) is an explanatory view at the time of a tensile load effect | action. FIG. 2 is an enlarged explanatory view of the vicinity of the rear wheel of the cargo handling vehicle shown in FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Handling apparatus 2 Chassis frame 3 Weighing frame 4 Handling frame 4a Vertical girder 4b Horizontal girder 5 Guide roller 6 Dump arm 7 Lift arm 8 Lift cylinder 9 Shaft support part 10 Hook arm 11 Hook 12 Hook cylinder 15 Leaf spring 22 Lift bar 30 Concave 31 1st 1 reinforcing member 32 mounting base 33 second reinforcing member 41 first reinforcing member 42 mounting base 43 second reinforcing member 51 lower member 53 upper member 54 slit 55 strain gauge C container D cab L load cell RT rear wheel V cargo handling vehicle

Claims (1)

Each chassis frame includes a cab and a cargo handling device having a hook arm and a lift arm for loading and unloading the container between the ground and the vehicle body at the rear of the cab, and having a cargo handling frame on which the container is detachably mounted. A cargo handling vehicle mounted on and supporting the weight of the container only by the cargo handling device;
A load cell disposed behind the cab on the chassis frame and supporting a cargo handling frame of the cargo handling device;
A cargo handling vehicle comprising: a control device that displays a result obtained by subtracting a weight of the cargo handling device from a total weight of the container and the cargo handling device loaded on the load cell.

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