JP6618850B2 - Removable container vehicle - Google Patents

Description

  The present invention relates to a detachable container vehicle capable of loading and unloading containers.

  Conventionally, a container handling vehicle has been known in which a container is loaded onto the chassis from the ground by the cargo handling arm of the cargo handling device provided on the chassis, and the container is lowered from the chassis to the ground by the reverse operation. For example, see Patent Document 1). In this container handling vehicle, the cargo handling arm and the container are provided with a container length detecting unit for detecting the length of the container, and the container length detecting unit determines the length of the container to be loaded. The mounting position of the container with respect to the chassis is determined according to the length.

  However, in the conventional container handling vehicle, it is possible to automatically discriminate between two types of containers having different lengths by the container length detection unit. However, when loading three types of containers having different lengths on the chassis, The containers had to be stacked manually, and it was difficult and skillful to mount the containers at appropriate positions on the chassis.

  Therefore, as in Patent Document 2, the three types of containers with different lengths are automatically detected, and the loading center of gravity of each container is aligned and mounted on the chassis. Removable container vehicles that can be loaded and unloaded are known.

Japanese Patent No. 3741840 Utility Model Registration No. 3197166

  However, in a conventional detachable container vehicle, when a cargo handling arm having a complicated shape approaches while moving to the front side, the proximity switch provided on the side detects it, so the position of the container can be accurately determined. There is a problem that it is difficult to detect.

  The present invention has been made in view of such a point, and an object of the present invention is to accurately detect the position of a cargo handling arm so that a plurality of types of containers having different lengths can be mounted at an accurate position. There is.

  In order to achieve the above object, in the present invention, the detected portion is provided on the front surface of the cargo handling arm.

  Specifically, in the first aspect of the invention, a cargo handling device having a subframe provided on a chassis and a cargo handling arm that is pivotable back and forth with respect to the subframe is provided. A plurality of different types of containers are configured to be able to be loaded and unloaded between the subframe and the ground, and the cargo handling arm includes an outer arm rotatably connected to the subframe, and a front-rear direction with respect to the outer arm. The present invention is intended for a detachable container vehicle having an L-shaped inner arm that is connected in a telescopic manner.

And the said detachable container vehicle is
An arm-side detected part protruding from the front surface of the inner arm;
An arm position detector provided on the sub-frame for detecting a side surface of the arm-side detected part;
A container-side detected portion provided on a side surface of the container;
A container detection unit that is provided in the subframe and detects the container-side detection unit when the container is loaded by the cargo handling arm.

  According to the above configuration, the arm side detection part protrudes from the front surface of the inner arm that can be expanded and contracted in the front-rear direction, and the side surface is detected by the arm position detection part, so the precise position of the inner arm is grasped. it can. For this reason, it is possible to accurately grasp the position of the container in cooperation with the container detection unit, and a plurality of types of containers having different lengths are reliably mounted at predetermined positions of the subframe. Further, since the arm-side detection portion is provided on the front surface of the inner arm, even when the inner arm is housed in the outer arm, it does not come into contact with the outer arm. For this reason, it is not necessary to change the shape of the outer arm. Note that a plurality of container detection units may be provided.

In the second invention, in the first invention,
The front corner of the inner arm is chamfered,
The arm side detected portion is provided on the front surface of the chamfered portion within a range that fits in a region of the chamfered portion when viewed from the side surface of the inner arm.

  That is, when the front side corner portion of the inner arm is chamfered, the arm position detection unit provided in the subframe detects the chamfered portion from the side, so that accurate detection is difficult. However, according to the above configuration, the arm side detection unit protrudes from the front surface of the chamfered portion and the side surface is detected, so the arm position detection unit can easily and easily detect the arm side detection unit. It can be detected reliably.

In the third invention, in the first or second invention,
Can detect at least three types of containers,
The arm position detection unit can detect a mounting position of an intermediate container having an intermediate length, and is invalidated when the container detection unit detects the container-side detection unit provided in the longest long container. It is configured as follows.

  According to the above configuration, when detecting the position of the long container, the detection by the arm position detection unit is disabled, so that the long container is further advanced on the subframe and loaded at a predetermined position. Can do. Moreover, four or more types of containers can also be detected by detecting a container side detected part by a container detection part.

In the fourth invention, in any one of the first to third inventions,
The plurality of types of containers are configured to be able to discharge the contents by being tilted after being slid rearward according to the length.

  According to said structure, the load in a container can be discharged | emitted from back, without covering the rear part bumper etc. of a chassis. Depending on the length of the container, dumping may be performed without sliding backward.

In the fifth invention, in the fourth invention,
In the case of the shortest container among the plurality of types of containers, after the inner arm is most contracted and slid rearward, the cargo handling arm is rotated rearward to discharge the contents,
A container that is longer than the shortest container is configured such that after the inner arm is contracted to the length of the container and slid rearward, the cargo handling arm is rotated rearward to discharge the contents. It is configured.

  In the above configuration, the innermost arm is shortened to the maximum for the shortest container, and the cargo handling arm is rotated backward with the inner arm shortened to match the container length for longer containers. In addition, the load in the container can be discharged from the rear without covering the rear bumper of the chassis.

  As described above, according to the present invention, the arm-side detected part protrudes from the front surface of the inner arm, and this arm-side detected part is detected by the arm position detecting part provided in the subframe. By accurately detecting the position of the cargo handling arm, a plurality of types of containers having different lengths can be mounted at the correct position.

It is a side view which shows the state in which the removable container vehicle which concerns on embodiment of this invention mounted the short container in the driving | running | working position. It is a side view which shows the state in which the removable container vehicle which concerns on embodiment of this invention piles up a short container from the ground. It is a side view which shows the state in the middle of the detachable container vehicle which concerns on embodiment of this invention piles up a short container from the ground. It is a side view which shows the state before the removable container vehicle which concerns on embodiment of this invention piles up a short container from the ground and slides. It is a side view which shows the state which the detachable container vehicle which concerns on embodiment of this invention dumps a short container. It is a side view which shows the state in which the detachable container vehicle which concerns on embodiment of this invention mounted the elongate container in the driving | running | working position. It is a side view which shows the state in which the removable container vehicle which concerns on embodiment of this invention piles up a long container from the ground. It is a side view which shows the state in the middle of the detachable container vehicle which concerns on embodiment of this invention piles up a long container from the ground. It is a side view which shows the state before the removable container vehicle which concerns on embodiment of this invention piles up a long container from the ground and slides. It is a side view which shows the state which the detachable container vehicle which concerns on embodiment of this invention mounted the intermediate | middle container in the driving | running | working position. It is a side view which expands and shows an inner arm. It is a front view which expands and shows an inner arm. It is a side view which expands and shows a short length detection part, a short length detection sensor, and its periphery. It is sectional drawing which expands and shows an arm side detected part, an arm position detection sensor, and its periphery. It is the arrow view which looked at FIG. 7A from the VIIB direction. It is sectional drawing which expands and shows a elongate to-be-detected part, a elongate detection sensor, and its periphery. It is the arrow line view which looked at FIG. 8A from the VIIIB direction. It is the arrow line view which looked at FIG. 8A from the VIIIC direction. It is a flowchart figure which shows the discrimination | determination method of each container at the time of loading a short container, an intermediate | middle container, and a long container on the detachable container vehicle which concerns on embodiment of this invention, and operation | movement of a detachable container vehicle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1A to 3, a detachable container vehicle 1 according to an embodiment of the present invention is loaded with a short container C <b> 1, an intermediate container C <b> 2, or a long container C <b> 3 having different lengths on a chassis 2. A cargo handling device 3 capable of working and unloading work on the ground is provided. The length of each container C1-C3 is not specifically limited. As shown in FIG. 1E, the cargo handling device 3 includes a subframe 4 provided on the chassis 2, a horizontal arm 3a whose rear end is pivotally supported by the rear portion of the subframe 4, and a front portion of the horizontal arm 3a. And an L-shaped cargo handling arm 3b that is pivotally supported and extendable. The cargo handling arm 3 b includes an outer arm 5 on the base end side and an inner arm 6 that is accommodated in the outer arm 5 so as to be extendable and contractible. At the upper end portion of the inner arm 6, a hook 6 a detachable from the container is provided. The outer arm 5 is rotatably connected to the horizontal arm 3a. For example, as shown in FIG. 7A, the sub-frame 4 includes a pair of left and right vertical frames 4a and a plurality of horizontal frames 4b that connect the vertical frames 4a to the left and right.

  Further, a rotating cylinder 3c is connected between the cargo handling arm 3b and the subframe 4. The cargo handling arm 3b can be used alone or integrally with the horizontal arm 3a by the rotating cylinder 3c. It is configured to be rotatable in the front-rear direction with respect to the subframe 4 around the center. The cargo handling arm 3b is connected to an expansion / contraction cylinder (not shown) for extending and retracting the inner arm 6. Although not shown in detail, high pressure oil is supplied to the rotating cylinder 3c and the telescopic cylinder through a control valve (not shown) from a hydraulic pump driven by the power of the engine of the detachable container vehicle 1. It has become.

  The containers C1 to C3 having different lengths are, for example, a short container C1 having a length of 5900 mm (see FIGS. 1A to 1E), an intermediate container C2 having a length of 8000 mm (see FIG. 3), and a long container C3 having a length of 8500 mm (see FIG. 3). 2A to 2D). Each container C1, C2, C3 is provided with an engaging portion 7 that can be freely engaged with and disengaged from the hook 6a of the inner arm 6 at the top of the front end surface thereof, and a support roller 9 that is rotatable in the front-rear direction is provided with a short container C1 The intermediate container C2 and the long container C3 are respectively provided on the left and right of the rear lower end portion. When each short container C1, intermediate container C2, and long container C3 are lowered to the ground, each of the support rollers 9 is grounded to support the short container C1, the intermediate container C2, or the long container C3. Yes.

  Further, rear end rollers 8 that are rotatable in the front-rear direction are provided on the left and right of the rear end portion of the subframe 4, and the rear end rollers 8 stably support the bottom portions of the containers C1 to C3 when loading and unloading. It can be done.

  Although details will be described later, for example, as shown in FIG. 1C and FIG. 2C, by operating the rotating cylinder 3c and the telescopic cylinder, the cargo handling arm 3b is moved forward of the chassis 2 while the horizontal arm 3a is kept horizontal. The three types of containers C1 to C3 can be loaded on the subframe 4 by rotating and extending to the right. Further, if the horizontal arm 3a and the cargo handling arm 3b are integrally rotated rearward around the rear end portion of the horizontal arm 3a, for example, as shown in FIG. 1E, the dumping operation of the containers C1 to C3 is possible. It becomes.

  The detachable container vehicle 1 includes a short container detection unit 10 (see FIG. 6) and an arm position detection unit 20 (see FIG. 6) for detecting each of three types of short containers C1, intermediate containers C2, and long containers C3 having different lengths. 7A and 7B), and a long container detection unit 30 (see FIGS. 8A to 8C).

  As shown in FIG. 6, the short container detection unit 10 as a container detection unit includes a short detection sensor 11 provided on the outer arm 5. Specifically, the short detection sensor 11 includes a proximity switch, and is provided on the side surface of the outer arm 5 via the sensor mounting bracket 13 so as to detect the rotation of the bell crank 11a. On the other hand, on the bottom wall surface of the short container C1, a short detected part 12 as a container side detected part is projected. The short detection unit 12 is turned on and off by rotating the bell crank 11a by the short detection part 12. Specifically, the bell crank 11a is provided so as to protrude in a standing state on either the left or right side of the vertical frame 4a, and corresponds to the bottom surface of the short container C1 by the loading operation of the short container C1 by the cargo handling device 3. The one end of the short detected portion 12 provided in contact with one another is in contact with the center of the bell crank 11a toward the front of the chassis 2. Here, since the short detected portion 12 is provided only in the short container C1, the bell crank 11a does not fall forward when loading the intermediate container C2 or the long container C3 other than the short container C1. Holds upright. When the bell detection sensor 11 detects that the bell crank 11a has fallen down and the other end of the bell crank 11a is separated from the short detection sensor 11, the short container C1 detection signal is transmitted to the control device (FIG. The control device controls the expansion / contraction cylinder based on the normal storage position data and control program of the short container C1 incorporated in advance, and controls the normal storage position of the short container C1 on the subframe 4 (not shown). In FIG. 1A), the extension operation of the telescopic cylinder is stopped.

  As shown in FIGS. 7A and 7B, the arm position detection unit 20 includes an arm detection sensor 21 that is provided in the front portion of the subframe 4 and detects the position of the inner arm 6. As shown in FIG. 7A, the arm detection sensor 21 is composed of, for example, a proximity switch, and is provided on the horizontal frame 4b of the subframe 4 via a sensor mounting bracket 23, and the normal detection of the intermediate container C2 when the intermediate container C2 is loaded. It arrange | positions in the position corresponding to the front side corner | angular part of the inner arm 6 of a storing position (refer FIG. 2A). That is, when the arm detection sensor 21 detects the position of the arm-side detected portion 22 provided on the front side of the inner arm 6, an intermediate container C2 detection signal is output to the control device. The expansion / contraction cylinder is controlled based on the normal storage position data and control program of the intermediate container C2 incorporated in advance, so that the intermediate container C2 on the subframe 4 is positioned at the normal storage position. The extension operation is stopped. The front corner of the inner arm 6 is chamfered 6b in order to avoid interference with other parts. The arm-side detected portion 22 is provided on the front surface of the chamfered portion 6b, for example, by welding or the like within a range where the chamfered portion 6b becomes a space when viewed from the side surface of the inner arm 6. It has been. The shape of the arm-side detected part 22 is not particularly limited, but it is desirable to have a side wall perpendicular to the detection part of the arm detection sensor 21. Since the arm side detected portion 22 is provided on the front surface of the inner arm 6, it is not necessary to provide a recess, a notch or the like for avoiding the arm side detected portion 22 on the outer arm 5 side, and the strength of the outer arm 5 is reduced. do not do. As described above, the arm position detection unit 20 can detect the mounting position of the intermediate container C2 having an intermediate length. It is configured to be invalidated when it is detected.

  As shown in FIGS. 8A to 8C, a long container detection unit 30 as another container detection unit includes a long detection sensor 31 as a detection sensor provided in the vertical frame 4a of the subframe 4, and a long container. It is provided with a long detected portion 32 as a container-side detected portion that is provided at the bottom front portion of C3 and is long in the front-rear direction of the chassis 2. More specifically, the long detected portion 32 is provided on one of a pair of left and right main girders C3a extending in the front-rear direction at the bottom of the long container C3.

  The long detection sensor 31 is composed of, for example, a proximity switch, and is provided on the right vertical frame 4a behind the arm detection sensor 21 via a sensor mounting bracket 33, and the long container C3 is in a normal storage position (see FIG. 2A). Is placed so as to react to the long detected portion 32 provided on the right side of the front portion of the bottom surface of the long container C3. Therefore, when the long detection sensor 31 detects the long container C3 due to the long detection sensor 31 reacting to the long detected portion 32, a long container C3 detection signal is output to the control device, This control device performs control for operating a warning buzzer of the detachable container vehicle 1 based on the normal storage position data and control program of the long container C3 incorporated in advance. At the same time, the control device controls the expansion / contraction cylinder based on the data and the control program incorporated in advance, and the long container C3 on the sub-frame 4 in the full expansion state of the expansion / contraction cylinder is stored in the normal storage position ( Slide to FIG. 2A). In addition, the member equivalent to this elongate to-be-detected part 32 is not provided in the main beams C1a and C2a of the short container C1 and the intermediate container C2.

  On the other hand, in cases other than the first and third containers, since both the C1 detection signal and the C3 detection signal are not present when the container is loaded, the expansion / contraction cylinder stops at the normal storage position of C2.

  Thus, in the short container detection part 10, the arm position detection part 20, and the long container detection part 30 of the said structure, the inner arm 6 is extended ahead by extension operation | movement of an expansion-contraction cylinder, or expansion | extension is stopped. Thereby, the position on the sub-frame 4 of each short container C1, the intermediate | middle container C2, and the long container C3 is adjusted. That is, as shown in FIGS. 1 to 3, storage of each short container C1, intermediate container C2, and long container C3 in which each short container C1, intermediate container C2, and long container C3 are in proper positions on the subframe 4 is provided. By being placed at the positions, the respective center-of-gravity positions G1, G2, and G3 of the three types of the short container C1, the intermediate container C2, and the long container C3 can be substantially matched. When the long container C3 is loaded with the long container C3 that does not have the long detected portion 32, a manual changeover switch (not shown) is provided, and the manual changeover switch is turned on. The long container C3 having the long detection portion 32 may be handled in the same manner.

  Although not shown in detail, the detachable container vehicle 1 includes a container lock device for securely fixing the container to the horizontal arm 3a. This container locking device has a pair of left and right claw portions provided on the horizontal arm 3a. The claw portions sandwich the main girders C1a, C2a, C3a extending in the front-rear direction of the chassis 2 at the left and right ends of the bottom of each short container C1, intermediate container C2, and long container C3. C1, the intermediate container C2, and the long container C3 can be locked to the horizontal arm 3a. The main girders C2a and C3a of the intermediate container C2 and the long container C3 are provided with blocking plates so as to block the main girders C2a and C3a other than the normal storage positions of the intermediate container C2 and the long container C3. In addition, since the arm side detected part 22 is provided in the front surface of the inner arm 6, operation | movement of this container lock apparatus is not inhibited.

  Next, a method for identifying each container when a container (short container C1, intermediate container C2, or long container C3) is loaded on the detachable container vehicle 1, and a pulling / sliding operation of the detachable container vehicle 1 are illustrated. This will be described with reference to the flowchart of FIG.

  First, as shown in FIG. 1B and FIG. 2B, with the inner arm 6 retracted to the maximum, the rotating cylinder 3c is extended to rotate the cargo handling arm 3b backward, and the hook 6a of the inner arm 6 is attached to the container. The engagement portion 7 is locked.

  Next, as shown in FIGS. 1C and 2C, the rotating cylinder 3c is retracted to rotate the cargo handling arm 3b forward. While the front part of the container is lifted by the rotation of the cargo handling arm 3b, the container is pulled onto the subframe 4. At this time, the container bottom is supported by the rear end roller 8.

  Next, as shown in FIGS. 1D and 2D, the cargo handling arm 3 b is horizontally arranged on the subframe 4. The container is mounted at a fixed position on the subframe 4 by extending the inner arm 6 forward by the extension operation of the telescopic cylinder.

  Here, when the container (the short container C1, the intermediate container C2, or the long container C3) is loaded on the subframe 4 as described above, the posture of FIG. 1A or FIG. When the posture is set, first, as in step S1, it is determined whether or not the short detected portion 12 is in contact with the bell crank 11a in the short container detecting portion 10. Here, when the contact of the short detected portion 12 is detected, the control device that has received the detection signal determines that the short container C1 has been loaded on the subframe 4, and proceeds to step S2 to move the inner arm. 6 is stopped at a predetermined position, and the short container C1 is placed at the normal storage position of the short container C1 shown in FIG. 1A. On the other hand, when the bell crank 11a in the short container detecting unit 10 does not detect the short detected portion 12, the process proceeds to step S3.

  Next, in step S3, it is determined whether a manual changeover switch (not shown) is ON. That is, when the manual changeover switch for switching the long container C3 not having the long detected portion 32 to be handled as the long container C3 having the long detected portion 32 is ON, the process proceeds to step S4. Then, an operation signal is output from the control device, and a long container storage alarm buzzer (not shown) is turned on to emit an alarm sound.

  Next, the process proceeds to step S5, and it is determined whether or not the slide hydraulic cylinder is extended to the maximum. For this determination, a sensor similar to the arm detection sensor 21 may be provided at a predetermined position to detect the arm-side detected portion 22. If it is not determined that the expansion / contraction cylinder has been extended to the maximum, step S5 is repeated until it is determined that the expansion / contraction cylinder has been extended to the maximum. If it is determined that the expansion / contraction cylinder has been extended to the maximum, the process proceeds to step S6, where the expansion / contraction operation of the expansion / contraction cylinder is stopped and placed in the normal storage position of the long container C3 as shown in FIG. 2A. To do.

  Here, when the manual changeover switch is in the OFF state in step S3, the process proceeds to step S7. In step S7, when the long container detection unit 30 detects the long detection unit 32 of the long container C3, the process proceeds to steps S4 to S6 as described above, and the long container detection unit 30 performs the long detection. If the long detected portion 32 of the long container C3 is not detected, the process proceeds to step S8.

  If it is not determined in step S8 that the arm position detection unit 20 has detected the arm-side detected unit 22 of the intermediate container C2, step S8 is repeated. If it is determined by the arm position detection unit 20 that the arm side detected unit 22 (intermediate container C2) has been detected, the process proceeds to step S9.

  In step S9, the sliding operation of the sliding hydraulic cylinder is stopped and placed in the normal storage position of the intermediate container C2, as shown in FIG.

  As described above, the short container detection unit 10, the arm position detection unit 20, and the long container detection unit 30 have containers mounted according to the detection status of the short detection sensor 11, the long detection sensor 31, and the arm detection sensor 21. Is the type (length) of the container (short container C1, intermediate container C2, or long container C3), and the extension amount of the expansion / contraction cylinder is determined according to the determined container length. The inner arm 6 is extended forward, and the placement position of the container (short container C1, intermediate container C2, or long container C3) with respect to the subframe 4 can be determined. Therefore, even when containers C having different lengths are loaded, the center positions G1, G2, and G3 of the short container C1, the intermediate container C2, and the long container C3 on the subframe 4 are substantially the same positions (for example, the center of gravity balance). The travel stability of the detachable container vehicle 1 can be maintained.

  Next, a case where the load loaded in the container is discharged will be described.

  When the short container detection unit 10 determines that the container mounted on the subframe 4 is the short container C1, as shown in FIG. 1D, the inner arm 6 is retracted to the maximum. Thereafter, as shown in FIG. 1E, the rotating cylinder 3c is extended, the outer arm 5 and the inner arm 6 are integrally rotated rearward, and the short container C1 is supported while the rear end roller 8 supports the bottom of the short container C1. By tilting, the load in the short container C1 can be discharged from the rear without covering the rear bumper of the chassis 2 or the like.

  When the arm position detection unit 20 and the long container detection unit 30 determine that the container mounted on the subframe 4 is the intermediate container C2 or the long container C3, as shown in FIGS. 2A and 3. Further, in a state in which the inner arm 6 is not retracted, the rotating cylinder 3c is extended to rotate the outer arm 5 and the inner arm 6 integrally backward, and the rear end roller 8 is used to rotate the bottom of the intermediate container C2 or the long container C3. By tilting the intermediate container C2 or the long container C3 while supporting the load, the load in the intermediate container C2 or the long container C3 can be discharged from the rear of the chassis 2. In the case of C2, dumping may be performed after sliding backward a predetermined distance.

  As described above, in the removable container vehicle 1 according to the present embodiment, the short container detection unit 10 and the arm position detection unit 20 provided in the cargo handling device 3, the short container C1, the intermediate container C2, and the long container C3, With the long container detection unit 30, the container loading position and the container position when discharging the load can be automatically changed according to the type (length) of each short container C1, intermediate container C2, and long container C3. .

  Further, even when the short container C1, the intermediate container C2, and the long container C3 having different lengths are loaded, the center of gravity of each of the short container C1, the intermediate container C2, and the long container C3 on the subframe 4 regardless of the length of the container. The positions G1, G2 and G3 can be made substantially the same position (for example, a position suitable for balance of the center of gravity), and the running stability of the detachable container vehicle 1 can be improved. Therefore, the short container C1, the intermediate container C2, and the long container C3 having different lengths can be securely mounted at appropriate positions on the subframe 4, and the short container C1, the intermediate container C2, and the long container can be safely and efficiently mounted. The container C3 can be detached and discharged, and the load can be discharged and transported.

  In the present embodiment, the arm-side detected portion 22 protrudes from the front surface of the inner arm 6 that is extendable in the front-rear direction, and the side surface is detected by the arm detection sensor 21. Can be grasped. For this reason, the position of the container can be grasped in cooperation with the short detected part 12 and the long detected part 32, and a plurality of types of containers having different lengths are reliably mounted at predetermined positions of the subframe 4. Further, since the arm-side detected portion 22 on the front surface of the inner arm 6 is provided, even when the inner arm 6 is housed in the outer arm 5, it does not come into contact with the outer arm 5. For this reason, since it is not necessary to change the shape of the outer arm 5, it is easy to ensure the strength of the outer arm 5.

  Also, if the front corner portion of the inner arm 6 is chamfered 6b, the arm position detector 20 provided in the subframe 4 detects the chamfer 6b portion from the side, so that accurate detection is difficult. In the present embodiment, the arm-side detection unit 22 is provided on the front surface of the chamfered portion 6b and the side surface is detected. Therefore, the arm position detection unit 20 makes the arm-side detection unit 22 easy. And it can detect reliably.

  In the present embodiment, when detecting the position of the long container C3, the detection by the arm position detection unit 20 is disabled so that the long container C3 is further advanced forward on the subframe 4 to a predetermined position. Can be loaded into.

  As described above, according to the detachable container vehicle 1 of the present embodiment, the arm side detected portion 22 protrudes from the front surface of the inner arm 6, and the arm side detected portion 22 is provided on the subframe. Since the position detection unit 20 detects the position, the position of the cargo handling arm 3b can be accurately detected, and a plurality of types of containers having different lengths can be mounted at the correct position.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the above embodiment, for example, in the above embodiment, the long container detection unit 30 uses the long detection sensor 31 for detection of the long detected portion 32. Other detection devices such as a switch may be used. The same applies to the short container detection unit 10 and the arm position detection unit 20, and the type of container may be specified using various detection devices such as a photosensor.

  As described above, for example, a full extension position detection unit that can detect the full extension position of the inner arm 6 by detecting the position of the arm-side detection unit 22 may be provided. In this way, the arm-side detected portion 22 can be used also, so that the number of parts is reduced and the fully extended position can be reliably detected.

  In the above embodiment, the positions of three types of containers can be detected. For example, if a plurality of types of intermediate containers C2 can be detected, four or more types of containers can be detected. Moreover, in the said embodiment, although an example of the length of the short container C1, the intermediate | middle container C2, and the long container C3 was shown, the length can be set arbitrarily.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

1 Removable container vehicle
2 chassis
3 cargo handling equipment
3a Horizontal arm
3b cargo handling arm
3c Rotating cylinder
4 subframes
4a Vertical frame
4b Horizontal frame
5 Outer arm
6 Inner arm
6a hook
6b Chamfer
7 engaging part
8 Rear end roller
9 Support roller
10 Short container detector
11 Short detection sensor
11a bell crank
12 Short detected part (container side detected part)
13 Sensor mounting bracket
20 Arm position detector
21 Arm detection sensor
22 Arm side detected part
23 Sensor mounting bracket
30 Long container detector
31 Long detection sensor
32 Long detection part (container side detection part)
33 Sensor mounting bracket
C1 short container
C2 intermediate container
C3 long container
C1a, C2a, C3a Main girder

Claims (4)

A cargo handling device having a subframe provided on a chassis and a cargo handling arm that is pivotable back and forth with respect to the subframe, and a plurality of types of containers having different lengths are arranged on the subframe by the cargo handling arm. The cargo handling arm is configured to be able to be loaded and unloaded from the ground, and the load handling arm includes an outer arm that is rotatably connected to the subframe, and an L-shaped inner that is telescopically connected to the outer arm. A detachable container vehicle having an arm,
An arm-side detected part protruding from the front surface of the inner arm;
An arm position detector provided on the sub-frame for detecting a side surface of the arm-side detected part;
A container-side detected portion provided on a side surface of the container;
A container detection unit that is provided in the subframe and detects the container-side detection unit when the container is loaded by the cargo handling arm ;
The front corner of the inner arm is chamfered,
The detachable container characterized in that the arm-side detected portion is provided on a front surface of the chamfered portion within a range that fits in a region of the chamfered portion when viewed from the side surface of the inner arm. vehicle. In the detachable container vehicle according to claim 1 ,
At least three types of containers can be detected,
The arm position detection unit can detect a mounting position of an intermediate container having an intermediate length, and is invalidated when the container detection unit detects the container-side detection unit provided in the longest long container. A removable container vehicle characterized by being configured as described above. In the removable container vehicle according to claim 1 or 2 ,
The detachable container vehicle is characterized in that the plurality of types of containers are configured to be able to discharge the contents after being slid rearward according to their lengths. In the detachable container vehicle according to claim 3 ,
In the case of the shortest container among the plurality of types of containers, after the inner arm is most contracted and slid rearward, the cargo handling arm is rotated rearward to discharge the contents,
A container that is longer than the shortest container is configured such that after the inner arm is contracted to the length of the container and slid rearward, the cargo handling arm is rotated rearward to discharge the contents. A detachable container vehicle characterized by being configured.