JP2011255740A - Container lock device of detachable body vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement specification change of a vehicle body, such as enlargement of an arm hook while maintaining the position of a container pawl at a standard position for securing interchangeability of a container lock device with regard to the vehicle body of a detachable body vehicle.SOLUTION: A pair of pawl receivers 32 on the vehicle body side is disposed in positions for engaging with a pair of container pawls of the container lock device while the containers are loaded as shown in (a), (b), or the pair of pawl receivers 32 moves apart from each other or closer to each other in the vehicle width direction as shown in (c) to (f) in association with swinging operations of the arm hook 18. When the arm hook 18 swings, a cam mechanism (a receiving surface 32b, a cam plate 46) converts the swinging operations of the arm hook 18 into rotational operations of the pair of pawl receivers 32.

Description

  The present invention relates to a container lock device for a detachable body vehicle.

  A so-called specially-equipped vehicle such as a dump truck or a cleaning car is generally manufactured by mounting a body having various basic structures on a vehicle body having a common basic structure. In addition, as a specially-equipped vehicle body that has been given versatility, a removable body vehicle such as an arm roll (registered trademark) that can be mounted on the vehicle body by appropriately selecting a plurality of types of containers by function is widely used. (See, for example, Non-Patent Document 1).

FIG. 8 shows a vehicle with a dump function as an example of the detachable body vehicle 10. This vehicle with a dump function includes an open container 14 on which earth and sand are loaded as a body that can be attached to and detached from the vehicle body 12. As a feature of the vehicle body 12 of the detachable body vehicle 10, the main frame 16, which is a strength holding member of the vehicle body 12, also functions as a placing unit for the container 14 and a guiding unit for loading and unloading. Further, a rear frame 20 that is pivotally attached to the rear end of the main frame 16 and a rear frame 20 that is pivotally attached to the rear end of the main frame 16 so that the front end can be turned up and down. And an arm hook 18 that can be expanded and contracted and that is rotatable in the front-rear direction around the upper portion of the main frame 16 independently of the rear frame 20. The arm hook 18 has an L shape as a whole. A middle frame 17 (see FIG. 5) pivotally attached to the rear frame 20 and a sliding arm 19 that can be moved into and out of the middle frame 17 are formed. The middle frame 17 and the sliding arm 19 are It is connected to extend freely. A hook 18 b (see FIG. 1) is provided at the tip of the sliding arm 19.
Further, as shown in FIG. 9A, the container 14 is provided with a hook bar 22 that engages with the arm hook 18 at the front end thereof, and at least the rear end thereof is loaded and loaded with respect to the vehicle body. A grounding roller 24 that is grounded when lowered is provided. In the illustrated example, a grounding roller 26 is also provided at the front end of the container 14.

When the container 14 is loaded onto the vehicle body 12, the main cylinder 28 that connects the main frame 16 and the arm hook 18 is extended, and as shown in FIG. 8A, the hook 18b (see FIG. 1) is hung on the hook bar 22 of the container 14, the main cylinder 28 is contracted as shown in FIG. 8B, and the arm hook 18 is rotated forward. Then, while lifting the front of the container 14, the vehicle 14 is drawn toward the rear end of the main frame 16 of the vehicle body 12, and the rotation operation is continued until the container 14 becomes horizontal. Subsequently, the sub-cylinder 29 (see FIG. 5) is extended to extend the arm hook 18 forward as shown in FIG. 8 (c), and the container 14 is moved to the vehicle body shown in FIG. 8 (d). The twelve main frames 16 are pulled into fixed positions. Since the detachable body vehicle 10 in FIG. 8 is a vehicle with a dump function, as shown in FIG. 8 (e) in the state of FIG. 8 (d) in which the container 14 is in a fixed position on the main frame 16. The so-called dumping operation can be performed by extending the main cylinder 28, raising the front end of the rear frame 20 together with the arm hook 18 with respect to the main frame 16, and tilting the container 14 backward.
On the other hand, when the container 14 is loaded onto and unloaded from the vehicle body 12, the container 14 is moved from the fixed position (FIG. 8D) on the main frame 16 to the rear side of the arm hook 18 by shortening the sub cylinder 29 (see FIG. 5). The container 14 is pushed out to the rear end portion of the main frame 16 (FIG. 8C). The container 14 is tilted rearward and the installation roller 24 is grounded by the pivoting operation of the arm hook 18 by the extension of the main cylinder 28 (FIG. 8B). Further, the arm hook 18 is rotated to push the container 14 backward, and the grounding roller 26 at the front end of the container 14 is grounded together with the installation roller 24 (FIG. 8A).

ShinMaywa Kogyo Co., Ltd., Business and Products, Product Introduction, Specially-equipped Vehicles, Detachable Body Vehicles, [online], [Search May 10, 2010], Internet <URL: http://www.shinmaywa.co.jp/ truck / products / detaching / index.htm>

By the way, as shown in FIG. 8D, the detachable body vehicle 10 has the hook 18b at the tip of the arm hook 18 (see FIG. 1) in a state where the container 14 is pulled into the fixed position on the main frame 16 of the vehicle body 12. ) And the hook bar 22 of the container 14 are maintained, and a container locking device is provided as a fixing means for securely fixing the container 14 to the vehicle body 12. As shown in FIG. 9, the container locking device is disposed on the vehicle body 12 side with a pair of left and right claws 30 provided on the lower side of the container 14 so as to protrude from the rear to the front. The container 14 includes a pair of claw receptacles that are fitted with the pair of claws 30 in the loaded state.

The shape and mounting position of the pair of claws 30 of the container 14 are standardized in consideration of the compatibility of the container 14 with the vehicle body 12, but this increases the allowable load of the arm hook 18 and the like. This is a cause of problems when there is a need to change specifications (enlargement) on the 12th side. For example, in response to a request for increasing the size of the arm hook 18, a pair of claw supports provided at positions where the container 14 can be fitted with the pair of claws 30 in the loaded state of the container 14 closes the swing locus of the arm hook 18. There is a problem that it becomes.
The present invention has been made in view of the above problems, and the object of the present invention is to set the position of the claw of the container to the standard position in order to ensure the compatibility of the container locking device with the vehicle body of the detachable body vehicle. It is possible to change specifications (enlargement) on the vehicle body side, such as an increase in the size of the arm hook while maintaining the above.

(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each item does not limit the technical scope of the present invention. Therefore, the technical aspects of the present invention also apply to those in which some of the constituent elements in each section are replaced, deleted, or other constituent elements are added while referring to the best mode for carrying out the invention. It can be included in the range.

  (1) It includes a vehicle body and a plurality of types of containers that are selectively used according to function. The vehicle body has a main frame that also functions as a guide and placement means for the container, and a front end portion that rotates up and down. A rear frame pivotally attached to a rear end portion of the main frame so as to be movable; and a rear frame pivotally attached to the rear frame, and extendable between the rear frames in the longitudinal direction of the vehicle body; and the rear frame And an arm hook that is rotatable in the front-rear direction around the upper part of the main frame, and the container has a hook bar that engages with the arm hook at the front end, at least at the rear end. , A grounding roller for grounding when loading and unloading the vehicle body is provided, and when loading the container, the arm hook is hung on a hook bar of the container, The arm hook is pulled up to the rear end of the main frame of the vehicle body while lifting the front of the container, and continues to rotate until the container becomes horizontal, and then the arm hook is extended forward. By pulling the container to a fixed position on the main frame of the vehicle body, and when unloading the container, the container is moved from the fixed position on the main frame of the vehicle body by a shortening operation to the rear of the arm hook. After pushing out to the rear end, the container can be tilted rearward by rotating the arm hook to ground the installation roller, and further pushed backward to ground the container front end. A container locking device for a detachable body car, which protrudes from the rear to the front on the lower side of the container. A pair of left and right claws, a pair of claw receptacles arranged at positions where the rear frame is fitted with the pair of claws in the loaded state of the container, and a swinging motion of the arm hook. A container lock device for a detachable body vehicle, comprising a claw receiver operating mechanism for separating and approaching the pair of claw receivers in the vehicle width direction.

The container locking device for the detachable body vehicle described in this section is configured so that the claw receiver operating mechanism moves the pair of claw receivers apart from each other in the vehicle width direction and moves closer to each other in the vehicle width direction. In the loaded state, the pair of claw receptacles on the vehicle body side are arranged at positions where the container locking device is fitted with the pair of claws of the container. On the other hand, in a state in which the arm hook is swung and the engagement between the container lock claw and the claw receptacle is released, the pair of claw receptacles are separated from each other in the vehicle width direction, thereby The nail holder is retracted to a place where it does not coincide with the pair of claws of the container.

(2) In the above item (1), the arm hook includes a middle frame that is pivotally attached to the rear frame, and a sliding arm that can freely move in and out of the middle frame. It is provided on the rear frame at a position to block the swinging locus of the arm hook, and the claw receiving operation mechanism avoids the arm hook by receiving a swinging operation from the front to the rear of the arm hook. A container lock device for a detachable body vehicle having a configuration for separating the claw receptacles (Claim 2).
In the container lock device for the detachable body vehicle described in this section, the pair of claw receptacles on the vehicle body side is fitted with the pair of claws of the container because it is necessary to ensure the compatibility of the container lock device. Arranged at the matching position. As a result, the claw support provided at the position on the rear frame that closes the swinging trajectory of the arm hook is subjected to the swinging motion of the arm hook from the front to the rear by the claw support operating mechanism so as to avoid the arm hook. In addition, by separating from each other in the vehicle width direction, it is avoided that the pair of claw receptacles hinder the swinging motion of the arm hook.

(3) In the above item (2), the pair of claw receptacles is a container lock device for a detachable body vehicle that is pivotally attached to the rear frame by a rotating shaft extending in the front-rear direction.
In the container lock device for the detachable body car described in this section, the pair of claw holders are pivotally attached to the rear frame by the rotation shaft extending in the front-rear direction, so that the arm hook can be moved in a direction that avoids the operation track. To do.
(4) In the above item (3), biasing means for fixing the pair of claw receivers at a position closing the operation locus of the arm hook, and swinging movement of the arm hooks are performed by the pair of claw receivers. A container lock device for a detachable body vehicle, comprising a cam mechanism for converting into a turning operation.
In the container lock device for the detachable body vehicle described in this section, the pair of claw receivers are pivotally attached to the rear frame so as to be pivotable in a direction avoiding the operation track of the arm hook by a rotation shaft extending in the front-rear direction. In addition, the pair of claw receivers is fixed at a position where the operating locus of the arm hook is closed by the biasing means. On the other hand, when the arm hook swings, the cam mechanism converts the swinging motion of the arm hook into a pivoting motion of the pair of claw receivers, and the pair of claw receivers are separated from each other. This prevents the arm hook from swinging.

(5) In the above item (2), the pair of claw supports are each detachably supported by a linear slide extending in the vehicle width direction so as to be slidable in a direction avoiding the operation locus of the arm hook. Container lock device.
In the container lock device for the detachable body vehicle described in this section, the pair of claw receptacles are supported by linear slides extending in the vehicle width direction, so that they slide in a direction that avoids the operation track of the arm hook. .
(6) In the above item (5), the biasing means for fixing the pair of claw receivers at a position closing the operation locus of the arm hook, and the swinging movement of the arm hooks A container lock device for a detachable body car, comprising a cam mechanism for converting into a sliding motion.
The container lock device of the detachable body car described in this section is instructed so that the pair of claw holders can slide in a direction avoiding the operation locus of the arm hook by a linear slide extending in the vehicle width direction, and The pair of claw receptacles is fixed at a position where the operating locus of the arm hook is closed by the urging means. On the other hand, when the arm hook swings, the cam mechanism converts the swing motion of the arm hook into a sliding motion of the pair of claw receivers, and the pair of claw receivers are separated from each other. This prevents the arm hook from swinging.

(7) A container lock device for a detachable body vehicle in which the spring is used as the biasing means in the above items (3) to (6).
In the container lock device for the detachable body vehicle described in this section, the pair of claw receivers provided on the rear frame are fixed at a position where the operating locus of the arm hook is closed by a spring as a biasing means. .

(8) In the above item (7), the cam mechanism may contact the receiving surface on the center side in the vehicle width direction of the claw receiver and the central side wall surface in the vehicle width direction of the claw receiver fixed to the arm hook. A container locking device for a detachable body vehicle including a cam plate that contacts and pushes in a direction that avoids an operation locus of the arm hook.
In the container lock device for the detachable body vehicle described in this section, the cam plate fixed to the arm hook of the cam mechanism is connected to the center side in the vehicle width direction of the claw receiver in conjunction with the swinging motion of the arm hook. The pair of claw receptacles are pushed out in a direction away from each other. And a pair of nail | claw receptacle will evacuate to the position which avoids the operation | movement locus | trajectory of an arm hook.
(9) In the above item (8), the arm hook is provided with a detachable body provided with a guide plate for maintaining the state in which the claw receiver retracts the operation locus of the arm hook when the arm hook is rotated. Car container lock device (Claim 5).
The container lock device of the detachable body vehicle described in this section is in a state of being retracted by the guide plate without returning to a position where the claw holder carelessly closes the operation track of the arm hook when the arm hook is rotated. To maintain.

  Since the present invention is configured as described above, in order to ensure compatibility of the locking device of the container with respect to the vehicle body of the detachable body vehicle, while maintaining the position of the claw of the container at the standard position, the arm hook is enlarged, etc. Specification change (upsizing) on the vehicle body side becomes possible.

It is a side view which shows operation | movement of an arm hook of a detachable body vehicle provided with the container lock apparatus which concerns on embodiment of this invention. FIG. 2 shows a vehicle body structure of the detachable body car shown in FIG. 1. (A) is a front view, (b) is a plan view. BRIEF DESCRIPTION OF THE DRAWINGS The rear frame of the detachable body vehicle provided with the container lock apparatus which concerns on embodiment of this invention is shown, (a) is a front view, (b) is a top view, (c) is a side view. FIG. 2 is an enlarged view of part C in FIG. 1, (a) is a side view, and (b) is a front view. It is an enlarged view which shows the base end part of an arm hook of the detachable body vehicle provided with the container locking device which concerns on embodiment of this invention, (a) is a top view, (b) is a side view. It is explanatory drawing which shows the locked state of the container locking device of the detachable body vehicle which concerns on embodiment of this invention, (a) is a side view, (b) is the B section enlarged view of (a). It is explanatory drawing which shows the retraction | saving operation | movement of a nail receiver of the container lock apparatus of the detachable body vehicle which concerns on embodiment of this invention, (a) is a side view when a nail receiver exists in an engagement position with a nail | claw, b) Front view, (c) Side view during retraction operation of claw receiver, (d) is front view, (e) is a side view upon completion of retraction of claw receiver, and (f) is a front view. is there. A vehicle with a dump function is shown as an example of a conventional detachable body vehicle, (a) to (d) are procedures for attaching and detaching a container, and (e) is a side view showing a dumping operation. It shows the principal part of the container of the conventional detachable body car, (a) is a side view, (b) is an AA sectional view of (a), (c) is the front of the nail shown in (b). It is a figure and a side view.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. Here, parts that are the same as or equivalent to those of the prior art are denoted by the same reference numerals, and detailed description thereof is omitted.
The basic configuration of the detachable body vehicle according to the embodiment of the present invention is the same as that of the conventional vehicle with a dump function shown in FIG. 8, and the container 14 also has the conventional dump shown in FIGS. Since it is the same as that used for a vehicle with a function, it demonstrates below, also referring FIG. 8, FIG. 9 suitably.

As shown in FIGS. 1 and 2, the detachable body vehicle according to the embodiment of the present invention includes a main frame 16 that also functions as a guide and placement means for the container 14, and a front end portion that moves up and down. A rear frame 20 that is pivotally attached to the rear end of the main frame 16 so as to be pivotable to the rear frame 20, and can extend and contract between the rear frames 20 in the longitudinal direction of the vehicle body. An arm hook 18 is provided that is rotatable in the front-rear direction around the upper side of the main frame 16 independently of the rear frame 20. The arm hook 18 is L-shaped as a whole, and a hook 18b is provided at the tip. Further, the middle frame 17 constituting the base end portion is attached to the rear frame 20 by a horizontal shaft extending in the vehicle width direction. Further, a sliding arm 19 which can be moved in and out with respect to the middle frame 17 is provided, and the middle frame 17 and the sliding arm 19 are connected to each other by a sub cylinder 29 (see FIG. 5) so as to be extendable and contractable. Therefore, the arm hook 18 can extend and contract between the rear frames 20 in the longitudinal direction of the vehicle body, and rotates around the upper portion of the main frame 16 independently of the rear frame 20 by extending and contracting the main cylinder 28 in the longitudinal direction. It is free.
3 (c) shows the bearing hole 20a of the rear frame 20, and FIGS. 5 and 7 show the bearing boss 18a provided at the base end portion (middle frame 17) of the arm hook 18. The arm hook 18 is pivotally attached to the rear frame 20 by inserting a rotation shaft (not shown) of the arm hook 18.

Also, as shown in FIGS. 3 and 4, the rear frame 20 has a pair of claw receptacles 32 fitted with the pair of claws 30 of the container 14 in the loaded state of the container 14 as shown in FIG. It is arranged at the matching position. More specifically, the pair of claw receptacles 32 includes an annular portion in which a hole 32a penetrating in the front-rear direction of the vehicle body 12 is formed, and the pair of claws 30 are formed in the holes from the rear to the front of the vehicle body. By engaging with 32a, the container 14 is fixed to the rear frame 20 more firmly. When the main cylinder 28 is extended during the dumping operation shown in FIG. 8 (e), the arm hook 18 and the pair of claws 30 of the container 14 and the pair of claw receptacles 32 of the rear frame 20 are engaged with each other. Together with the container 14, the rear frame 20 tilts backward.

The pair of claw receptacles 32 are provided at positions where the swinging locus of the arm hook 18 on the rear frame 20 is blocked, and are pivotally attached to the rear frame 20 by a rotating shaft 34 extending in the front-rear direction. The arm hook 18 can be rotated in a direction to avoid the operation locus of the arm hook 18 indicated by the middle arrow D.

Further, a spring (a torsion coil spring in the illustrated example) 36 is used as an urging means for fixing the pair of claw receptacles 32 at a position where the operation locus of the arm hook 18 is blocked. And the stopper 38 is provided so that the receiving surface 32b of the vehicle width direction center side of a pair of bearing 32 may become a vertical surface. As shown in FIG. 4, the stopper 38 includes a support bracket 40 that is fixed to the rear frame 20 and supports the rotating shaft 34, an adjustment screw fixing bracket 42 that is fixed to the claw receiver 32, and an adjustment screw 44. Become. And the stop position of a pair of bearing 32 is positioned by the front-end | tip of the axial part of the adjusting screw 44 contacting the support bracket 40. As shown in FIG. Further, the stop position of the pair of bearings 32 can be adjusted by adjusting the protruding amount of the shaft portion of the adjusting screw 44 from the fixed bracket 42.

  Further, in conjunction with the swinging movement of the arm hook 18, the arm hook 18 swings from the front to the rear as a claw receiving operating mechanism for separating and approaching the pair of claw receivers 32 in the vehicle width direction. In response to the operation, a cam mechanism for separating the claw receiver 32 so as to avoid the arm hook 18 is provided. This cam mechanism converts the swinging motion of the arm hook 18 into the rotational motion of the pair of claw receivers 32. As shown in FIG. 5, the receiving surface 32b on the center side in the vehicle width direction of the claw receivers. The cam plate 46 is fixed to the base end portion of the arm hook 18. In the illustrated example, the cam plate 46 has a triangular protrusion 46 a that protrudes in the rotational direction from the front to the rear of the arm hook 18.

7A and 7B, when the protruding portion 46a of the cam plate 46 comes into contact with the central side wall surface 32b in the vehicle width direction of the claw receiver 32, the claw receiver 32 is moved to the protruding portion 46a. 7 (c) and 7 (d), the arm hook 18 is pushed out in a direction D that avoids the operation locus, and as shown in FIGS. 7 (e) and 7 (f). As shown in FIG. 2, the pair of claw receptacles 32 retracts to a position where the operating locus of the arm hook 18 is avoided.
5 and FIG. 7, when the arm hook 18 rotates from the front to the rear, the cam plate 46 and the center side wall surface 32 b in the vehicle width direction of the claw receiver 32 are in sliding contact with each other. A guide plate for maintaining the state in which the claw receiver 32 has retracted the operating locus of the arm hook 18 and preventing the claw receiver 32 from colliding with the main cylinder 28 when the arm hook 18 is rotated backward. It is.

On the other hand, as shown in FIGS. 7 (e) and 7 (f), the arm hook 18 is rotated from the rear to the front with the pair of claw receptacles 32 retracted to a position that avoids the operation locus of the arm hook 18. When moved, the vehicle lateral direction central side wall surface 32b of the pair of claw receivers 32 is guided to the inclined surface of the protruding portion 46a of the cam plate 46 as shown in FIGS. Go closer to the center in the vehicle width direction. Finally, as shown in FIGS. 7A and 7B, the protruding portion 46a of the cam plate 46 is separated from the central side wall surface 32b of the claw receiver 32 in the vehicle width direction, and the arm hook 18 It returns to the position that closes the swing trajectory.

Although not shown, the pair of claw receivers 32 is supported by a linear slide provided in the rear frame 20 extending in the vehicle width direction so as to be slidable in a direction avoiding the operation locus of the arm hook 18. It is also possible to adopt a structure.
Also in this case, the pair of claw receptacles 32 supported by the linear slide extending in the vehicle width direction so as to be slidable in the direction of avoiding the operation locus of the arm hook 18 is moved by the biasing means such as a compression coil spring. The hook 18 is fixed at a position for closing the operation locus. On the other hand, when the arm hook 18 swings, similarly, it is constituted by a receiving surface 32b on the center side in the vehicle width direction of the claw receiver 32 and a cam plate 46 fixed to the base end portion of the arm hook 18. By the cam mechanism, the swinging motion of the arm hook 18 is converted into the sliding motion of the pair of claw receivers, and the pair of claw receivers 32 are separated from each other, whereby the pair of claw receivers 32 swings the arm hook 18. It is a thing to avoid inhibiting.

  In addition, as described above, the claw receiver 32 is passively operated as a claw receiver operating mechanism for moving the pair of claw receivers 32 away from each other in the vehicle width direction in conjunction with the swinging motion of the arm hook 18. Instead of the cam mechanism to be used, an actuator that operates by detecting the angle of the arm hook 18 may be used, and the retraction and return operations of the pair of claw receivers 32 may be actively performed.

According to the embodiment of the present invention configured as described above, the following operational effects can be obtained.
First, the container lock device of the detachable body vehicle according to the embodiment of the present invention is arranged in a position where the container lock device is loaded with the pair of claws 30 of the container 14 in the loaded state of the container 14. The pair of claw receivers 32 on the 12 side are separated from and approach each other in the vehicle width direction by the operation mechanism of the claw receiver 32 in conjunction with the swinging motion of the arm hook 18. Then, by swinging the arm hook 18, when the engagement between the claw 30 of the container lock and the claw receiver 32 is released, the pair of claw receivers 32 are separated from each other in the vehicle width direction. It is.
The layout of the claw receiver 32 is such that, for example, the arm hook 18 or the main cylinder 28 related to the pivoting operation of the arm hook 18 is reinforced or enlarged in order to increase the allowable load of the arm hook 18. This is adopted when the specification change (upsizing) is performed.

  Further, the position of the claw 30 of the container 14 is arranged at a position where the pair of claw receptacles 32 on the vehicle body 12 side is fitted with the pair of claw 30 of the container 14 in order to ensure compatibility of the container locking device. The As a result, the pair of claw receivers 32 provided on the rear frame 20 at positions where the swing trajectory of the arm hook 18 is blocked are subjected to a swing operation from the front to the rear of the arm hook 18 by the claw receiver operating mechanism. Thus, the pair of claw receivers 32 are separated from each other in the vehicle width direction so as to avoid the arm hooks 18, thereby preventing the pair of claw receivers 32 from hindering the swinging motion of the arm hooks 18.

  Moreover, the pair of claw receivers 32 are pivotally attached to the rear frame 20 so as to be rotatable in a direction avoiding the operation locus of the arm hook 18 by a rotating shaft 34 extending in the front-rear direction, and the pair of claw receivers. 32 is fixed at a position where the operating track of the arm hook 18 is closed by a spring 36 which is a biasing means. On the other hand, when the arm hook 18 swings, the cam mechanism (the receiving surface 32b, the cam plate 46) converts the swinging motion of the arm hook 18 into the rotating motion of the pair of claw receivers 32. It is possible to prevent the pair of claw receptacles 32 from obstructing the swinging motion of the arm hook 18 by separating the receptacles 32 from each other.

  Further, a pair of claw supports 32 pivotally attached to the rear frame 20 are fixed at positions where the operating locus of the arm hook 18 is blocked by a spring 36 as an urging means, and a cam plate 46 fixed to the arm hook 18 is provided. The pair of claw receptacles 32 are pushed away from each other by coming into contact with the receiving surface 32b on the center side in the vehicle width direction of the claw receptacle 32, and the pair of claws are interlocked with the swinging motion of the arm hook 18. The receiver 32 can be retracted to a position where the operating locus of the arm hook 18 is avoided.

  10: Detachable body car, 12: Car body, 14: Container, 16: Main frame, 17: Middle frame, 18: Arm hook, 19: Sliding arm, 20: Rear frame, 22: Hook bar, 24, 26: Roller for grounding 28: Main cylinder, 29: Sliding cylinder (sub cylinder), 30: Claw, 32: Claw holder, 32b: Receiving surface, 34: Rotating shaft, 36: Spring, 46: Cam plate, 46a: Projection

Claims (5)

A vehicle body and a plurality of types of containers selectively used according to function, wherein the vehicle body has a main frame that also functions as a guide and placement means for the container, and a front end portion that can be turned up and down. A rear frame that is pivotally attached to the rear end of the main frame, and a rear frame that is pivotally attached to the rear frame, can extend and contract between the rear frames in the longitudinal direction of the vehicle body, and is independent of the rear frame. And an arm hook that is rotatable in the front-rear direction around the main frame. The container has a hook bar that engages with the arm hook at a front end thereof, and at least a rear end portion of the vehicle body. There is a grounding roller that contacts the ground when loading and unloading
When the container is loaded, the arm hook is hung on the hook bar of the container, and the arm hook is rotated to draw the container forward while lifting the front of the container to the rear end of the main frame of the vehicle body. After continuing the pivoting operation until it becomes, the container is pulled to the fixed position on the main frame of the vehicle body by the extension operation to the front of the arm hook,
When the container is unloaded, after the container is pushed out from the fixed position on the main frame of the vehicle body to the rear end of the main frame by the shortening operation to the rear of the arm hook, the arm hook is rotated. A container locking device for a detachable body car capable of tilting the container rearward to ground the installation roller and further pushing backward to ground the container front end,
A pair of left and right claws provided on the lower side of the container so as to protrude from the rear toward the front;
A pair of claw receptacles arranged at positions where the rear frame is fitted with the pair of claws in the loaded state of the container;
A container lock device for a detachable body vehicle, comprising a claw receiving operation mechanism for separating and approaching the pair of claw receptacles in the vehicle width direction in conjunction with the swinging movement of the arm hook. . The arm hook includes a middle frame that is pivotally attached to the rear frame and a sliding arm that can protrude and retract with respect to the middle frame, and the pair of claw supports are provided on the rear frame to swing the arm hook. It is provided at a position that closes the movement locus, and the claw receiver operating mechanism has a configuration in which the claw receiver is separated so as to avoid the arm hook by receiving a swinging operation from the front to the rear of the arm hook. The container lock device for a detachable body car according to claim 1. Each of the pair of claw supports is pivotally attached to the rear frame by a rotating shaft extending in the front-rear direction, and the pair of claw supports is fixed to a position that closes the operation locus of the arm hook. The container locking device for a detachable body vehicle according to claim 2, further comprising: an urging unit; and a cam mechanism that converts a swinging motion of the arm hook into a pivoting motion of the pair of claw receivers. A spring is used as the urging means, and the cam mechanism is in contact with a receiving surface on the center side in the vehicle width direction of the claw receiver and a central side wall surface in the vehicle width direction of the claw receiver fixed to the arm hook. 4. A container locking device for a detachable body vehicle according to claim 3, further comprising a cam plate that contacts and pushes the arm hook in a direction that avoids an operation locus of the arm hook. The detachable body according to claim 4, wherein the arm hook is provided with a guide plate for maintaining the state in which the claw support retracts the operation locus of the arm hook when the arm hook is rotated. Car container lock device.

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