JP2016002850A - Vehicle-mounted cargo box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle-mounted cargo box which makes an engagement device provided on a side plate opened and closed horizontally have a high engagement force and an easy operability and is capable of preventing damage in the engagement device or in the side plate.SOLUTION: This invention comprises a side plate having a pivot at one end to be opened and closed horizontally on the pivot, a rotary lever the intermediate part of which has a first axial support provided on the side plate to make a direction crossing the main face nearly vertical serve as the axial direction, a first engagement part provided at the tip of the rotary lever to be capable of entering and leaving the other end of the side plate from below, where the intermediate part is so configured to be provided at a position away from the other end closer inward to the center by a predetermined distant.

Description

  The present invention relates to a cargo box mounted on a vehicle frame whose longitudinal direction is the vehicle front-rear direction.

  Side boxes are provided on the floor surface of the cargo box mounted on the vehicle. By opening these side plates, the cargo can be loaded and unloaded through the opening. The side plate that can be opened and closed is provided with a locking device for holding the closed state, and this locking device is required to have a simple locking force and a simple operability (for example, Patent Documents). 1).

  For example, the packing box 90 as shown in FIG. 5 is provided with a side plate 91 that opens and closes in the horizontal direction and a locking device 92 that locks the side plate 91. The side plate 91 is pivotally supported by a shaft portion 93 at a corner, and the side plate 91 is opened and closed by being horizontally rotated around the shaft portion 93.

  The locking device 92 includes a rotation lever 92 b that is pivotally supported by a shaft support portion 92 a that intersects the main surface of the side plate 91 substantially perpendicularly. As shown in the drawing, a locking pin 92e is attached to the rotary lever 92b via a biasing spring 92c and a rod (connecting member) 92d. The locking pin 92e is configured to move up and down as the rotary lever 92b rotates up and down. When the rotary lever 92b is rotated up (arrow A91), the locking pin 92e is also moved up. At this time, the locking pin 92e is pulled out from a pin insertion portion (locked portion) 92f provided below the side plate 91, whereby the side plate 91 is released from the locked state and can be rotated horizontally. One end of the rod 92c is connected to the locking pin 92e, and the other end is connected to a channel member 92g that is locked to each of the upper surfaces of the two side plates 91. By simply rotating the rotary lever 92b, not only the locking by the locking pin 92e but also the locking by the channel material 92g can be easily operated.

Japanese Utility Model Publication No. 60-125234

  In the locking device 92 for the side plate 91 that is horizontally opened and closed, if it is intended to achieve both a fixed locking force and simple operability with the configuration having the rotating lever 92b as described above, there is a possibility that unexpected damage may occur. The present inventors paid attention to.

  The locking pin 92e provided on the side plate 91 is provided in the vicinity of the end 910 away from the shaft portion 93 in order to suppress a load caused by the horizontal rotation of the side plate 91. Therefore, the rotation lever 92b is also provided so that it can be operated in the vicinity of the end 910. On the other hand, in order to enable easy operation without applying a large force, the rotary lever 92b itself has a long shape in many cases.

  However, as the locking force of the side plate 91 by the locking pin 92e, in addition to the operation force by the operator, the pressing force generated from the inside to the outside by the load in the cargo box 90, the inertial force generated when the vehicle travels, etc. It is only necessary to prevent the horizontal rotation of the side plate 91 performed in step S2. This prevention can sufficiently exert its function if the locking pin 92e is securely inserted into the pin insertion portion 92f.

  Therefore, in view of the function required for the rotation lever 92b, it is important that the locking pin 92e is inserted deeply into the pin insertion portion 92f, and the locking pin 92e is in close contact with the pin insertion portion 92f. It is required that the rotation lever 92b can be easily operated rather than being in the inserted state. Also, it is not preferable that the rotation lever 92b is difficult to rotate by adding strength from the viewpoint of reducing the weight of the side plate 91. That is, excessive strength design is not performed on the rotary lever 92b and the like. Nevertheless, if the operator unexpectedly operates the rotating lever 92b with a large force, an extra load is applied to the rotating lever 92b. In particular, when the rotary lever 92b is long and has a large rotation radius, the larger the rotation radius, the greater the load applied to the shaft support portion 92a, and the damage to the side plate portion on which the shaft support portion 92a and the shaft support portion 92a are fixed. May occur.

  Therefore, the present invention provides a locking device mounted on a vehicle that can prevent damage to the locking device and the side plate while the locking device provided on the side plate that is horizontally opened and closed has high locking force and simple operability. For the purpose of provision.

  In the present invention, in order to solve the above-described problem, the following means is used in the “packing box mounted on the vehicle”.

A side plate having a shaft portion at one end and opened and closed in the horizontal direction around the shaft portion, and a first shaft having an axial direction provided on the side plate and substantially perpendicular to the main surface A rotary lever having a support portion at an intermediate portion; a first locking portion provided at the tip of the rotary lever and freely accessible from below at the other end of the side plate; and a first engagement provided below the side plate. A first locked portion to which the locking portion is locked, and the first shaft support portion is provided at a position away from the other end portion by a predetermined distance toward the inside of the center.
The intermediate portion may be configured so that the predetermined distance is approximately ½ of the length of the rotary lever.

  A second locking portion having a second shaft support portion on the side plate that is different from the first shaft support portion with the intersecting direction as an axial direction; and a second locking portion provided adjacent to the side plate. A second locked portion that is locked to the second locking portion, and the rotating lever is connected to the second locking portion via a connecting member, and the rotating lever and the second locking portion are connected to the second locking portion. Each connection part with respect to a connection member is good also as a structure provided in the state which approached one edge part of the said side plate rather than the said 1st shaft support part and the said 2nd shaft support part in the horizontal direction.

  Further, below the side plate, there is a lower side plate that is opened or closed in a horizontal direction or an up-down direction, the first locked portion is provided on the lower side plate, and the first locking portion is It is good also as a structure latched by the said 1st to-be-latched part in the state which the said lower side plate closed.

  In addition, a pair of pillars erected on the floor of the cargo box on which the side plate is provided, a slider capable of moving up and down the column, a pivotally supported by the slider, and below the side plate There is provided a load receiving platform lifting device including a load receiving stand that is in an upright state, the first locked portion is provided in the load receiving stand, and the first receiving portion is configured so that the load receiving stand is It is good also as a structure latched by the said 1st to-be-latched part in a standing state. In addition, the said load receiving stand has a taper part in the rotation front-end | tip part, and the said 1st to-be-latched part is provided in the said taper part.

  According to the cargo box mounted on the vehicle according to the present invention, the first locking part and the first locked part used for locking the side plate that is horizontally opened and closed are provided, and the first locking part is provided. Since the first shaft support portion of the rotary lever is provided near the center of the main surface of the side plate, when the operator operates the rotary lever from the first shaft support portion with respect to the entire length of the rotation lever. The ratio of the length to the part grasped with a hand can be made small. On the other hand, the ratio of the length from the first shaft support portion to the first locking portion at the tip can be increased with respect to the entire length of the rotary lever. Therefore, even if the operator operates the rotary lever with a large force unexpectedly, the load generated in the first shaft support portion can be suppressed, and therefore damage to the first shaft support portion and the side plate provided with the first shaft support portion can be prevented. These are more effective as the rotary lever is longer. Furthermore, even if the height of the operation range in which the operator grips and operates the hand is small, the vertical movement range of the first locking portion can be increased. As a result, since the first locking portion is inserted deeply into the first locked portion, it is possible to prevent the first locking portion from coming out of the first locked portion even when the vehicle is running or the like. At the same time, since the operating range of the rotary lever is small, even if the height of the side plate is reduced or the height of the area sandwiched between the lateral stiffeners is reduced, the simple operability is not hindered and the high operability is maintained. be able to.

It is a rear part side view of the dump truck with which the load receiving table raising / lowering device which concerns on embodiment of this invention was mounted. It is a cargo box rear view in the dump truck in which the load receiving table raising / lowering device which concerns on embodiment of this invention was mounted. It is a side board schematic cross section of the packing box concerning the embodiment of the present invention. It is a principal part rear view of the dump truck by which the load receiving platform raising / lowering device which concerns on another embodiment of this invention was mounted. It is a principal part rear view of the dump truck with which the load receiving stand raising / lowering device with a bumper concerning the conventional embodiment was mounted.

  An example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing a rear portion of a dump truck T that tilts the cargo box 1 downward and rearward. As shown in FIG. 1 (a), the dump truck T includes a first vehicle body frame (chassis frame) F1 having a pair of left and right as a longitudinal direction and a second vehicle body frame F2 provided on the first vehicle body frame 1. A dump hinge 1 provided at a rear end portion of the second vehicle body frame F2 to support the second vehicle body frame F2 so as to be tiltable with respect to the first vehicle body frame 1, and a packing box fixed to an upper portion of the second vehicle body frame F2. B, a load receiving table elevating device TGL mounted on the rear portion of the load box B, and a side plate 1 provided in the load box B and capable of being horizontally opened and closed above the load receiving table elevating device TGL.

  The cargo box B is supported in a horizontal state as shown in the figure by the second vehicle body frame F2, and the dump truck T is allowed to travel in this state. The packing box B is composed of a floor portion and a side plate (for example, a side plate 1 provided at the rear portion of the dump truck T) standing upright on the floor portion. Furthermore, in order to block the rear opening of the packing box B, a load receiving table lifting device TGL is also used.

  The load receiving table elevating device TGL has a known configuration, and includes a pair of left and right columns 2 erected at the rear end of the cargo box B, and a slider 3 that is inserted into the column 2 and can be moved up and down. The load receiving platform 4 is supported by the slider 3 so as to be rotatable between a horizontal posture and a standing posture.

  One end of a wire (not shown) is fixed to the slider 3, and the wire is pulled upward to the upper sheave C1 fixed to the upper portion of the support column 2, and is folded downward through the upper sheave C1. It is stretched in a state.

  A cross member 6 is installed between the left and right support columns 2 with the vehicle width direction as a longitudinal direction, and the upper surface of the cross member 6 is provided at a height that substantially coincides with the upper surface (floor surface) of the floor portion of the cargo box B. Yes. A fixed sheave C2 around which the wire is wound is provided at both ends of the cross member 6, and one hydraulic cylinder 7 is housed between the left and right fixed sheaves C2 along the longitudinal direction. . The wire drawn into the cross member 6 from the fixed sheave C2 is wound around a moving sheave (not shown) provided at the tip of the rod of the hydraulic cylinder 7 and is fixed to the fixed end of the cross member 6. . The moving sheave moves in the rod expansion / contraction direction.

  The wire is drawn up into the support column 2 by the expansion and contraction operation of the hydraulic cylinder 7 or pulled into the cross member 6 from the support column 2 to move the slider 3 up and down. As the slider 3 moves up and down, the load receiving platform 4 also moves up and down. That is, when loading / unloading a load between the inside of the cargo box B and the ground using the load receiving table lifting / lowering device TGL, the load receiving table 4 in the horizontal posture (the chain line portion) shown in the figure is lifted / lowered. Further, when the dump truck T is set in the traveling state without being used for the loading / unloading work, the load receiving platform 4 is in the standing posture (the chain line portion), and is rotated between the standing posture and the horizontal posture (arrow A1). Is done manually. Note that the load receiving table 4 in the standing posture is locked by locking a lock lever 4 a provided on the side of the load receiving table 4 with a hook 2 a provided on the side of the column 2.

  The side plate 5 provided on the load receiving table elevating device TGL is pivotally supported by a shaft portion 51 provided at the left rear end portion of the cargo box B with the vehicle width direction as a longitudinal direction. The shaft portion 51 has the vertical direction as the axial center direction, and the side plate 5 can rotate in the horizontal direction with the shaft portion 51 as the rotation center. In addition, the side plate 5 is arranged in parallel at the rear end portion of the packing box B, and is not shown in the drawing, but the right side plate is connected to the right rear end portion of the packing box B, like the left side plate 5. It is pivotally supported by the provided shaft portion.

  In the dump truck T configured as described above, the second vehicle body frame 2 is tilted to the vehicle rear side (clockwise in the drawing) as shown in FIG. 1B by the dump device 8 attached to the first vehicle body frame 1 ( The arrow A2) and the packing box B are similarly tilted. The dump device 8 is provided with a hydraulic cylinder 81, and the packing box B tilts as the hydraulic cylinder 81 expands and contracts. At this time, in order to discharge the load in the cargo box B to the rear of the vehicle, the cargo receiving platform 4 is in a horizontal posture, the side plate 5 is in a horizontally rotated state, and the rear side of the cargo box B is opened. Yes. The tilt angle by the dump device 8 is an angle at which the tip of the load receiving platform 4 comes close to the ground without contacting the ground. For this reason, the length of the load receiving platform 4 (the length in the front-rear direction in the horizontal posture) and the height of the side plate 5 (the length in the vertical direction) are appropriately adjusted with the tilt angle of the cargo box B by the dump device 8. It becomes the size.

  Next, the locking devices 10 and 20 for locking the closed side plate 5 will be described with reference to FIG. As shown in FIG. 2A, the left and right side plates 5 are provided with locking devices 10 and 20, respectively.

  The locking device 10 provided on the right side plate 5 includes a rotary lever 11 having a first shaft support portion 11a in its middle portion and a direction that intersects the main surface of the side plate 5 substantially perpendicularly. A first locking portion (locking pin) 12 provided on the distal end side of the lever 11 is provided. The locking pin 12 is inserted into a cylindrical pin insertion portion 41 provided on the cargo receiving platform 4. Further, the locking device 10 is connected to the rotary lever 11 via a connecting member (connecting rod) 13 and also includes a channel member 14 that covers a part of each of the left and right side plates 5.

  The rotary lever 11 has a configuration in which a rod-shaped lever portion 11b and a plate-shaped plate portion 11c are connected via a first shaft support portion 11a. Further, as shown in the drawing, the first shaft support portion 11a is a position (inward) that is separated by a predetermined distance L1 in the horizontal direction from the left end of the side wall 5 (center of the packing box B) toward the right side (outside of the packing box B). Is provided. The lever portion 11b is rotatable around the first shaft support portion 11a between the upper stiffener 5a and the lower stiffener 5b whose longitudinal direction is the horizontal direction in the side plate 5.

  The locking pin 12 is connected to the distal end side of the plate portion 11c (the side opposite to the first shaft support portion 11a), and is provided in a state of penetrating the lower stiffener 5b at a position near the left end of the side plate 5. Therefore, the locking pin 12 can move up and down with the rotation of the rotary lever 11 around the first shaft support portion 11a, and can move in and out of the lower stiffener 5b. The “exitable / inaccessible” means that the locking pin 12 protrudes further downward from the lower surface of the lower stiffener 5b, and the pin insertion portion 41 is detached from the protruding state so as to be immersed inward of the lower stiffener 5b. It refers to being able to take both states. The plate portion 11c is provided with an urging spring 11d at an intermediate portion thereof. The biasing spring 11d has one end connected to the plate portion 11d and the other end connected to the lower stiffener 5b, and functions to bias the plate portion 11d downward. The urging spring 11d has an urging force that prevents the rotating lever 11 from swinging due to vibration or the like during traveling of the dump truck T, and greatly impedes the operation of the rotating lever 11 by the operator. It doesn't have that much power. That is, the operator can easily operate the rotary lever 11 and the operation pin 12 can surely bias the locking pin 12 downward while the dump truck T is traveling.

  The channel member 14 connected to the plate portion 11c via the connecting rod 13 is provided so as to cover a part of each of the upper surface, the front surface, and the rear surface of the upper stiffener 5a of the left and right side plates 5. The left and right side plates 5 are locked by the channel material 14 so as not to open and close. That is, the channel material 14 exhibits a function of locking the side plate 5 in a closed state as a second locking portion, apart from the locking pin 12.

Similarly, the locking device 20 provided on the left side plate 5 is also provided on the rotary lever 21 having the first shaft support portion 11a located in the main surface of the side plate 5 in the middle portion, and on the distal end side of the rotary lever 21. The first locking portion (locking pin) 22 is provided. The locking pin 22 is also inserted through a cylindrical pin insertion portion 41 provided on the cargo receiving platform 4. The locking pin 22 is provided in a state penetrating the lower stiffener 5b at a position near the right end of the side plate 5. The locking pin 22 can move up and down with the rotation of the rotary lever 11 and can enter and exit the lower stiffener 5b. ing. A biasing spring 21d is also provided in the same manner.
By operating these locking devices 10 and 20 as shown in FIG. 2B, the side plate 5 in the closed state can be unlocked or locked.

  First, in order to release the lock, the lever portion 11b is grasped by hand and operated as indicated by an arrow A11. By operating the lever portion 11b, the plate portion 11c rotates around the first shaft support portion 11a as indicated by an arrow A12 while resisting the biasing force of the biasing spring 11d. As the plate portion 11c rotates, the locking pin 12 moves substantially vertically upward. At this time, the locking pin 12 moves until it is removed from the pin insertion part 41. The locking pin 12 is connected to the plate portion 11c via a connecting plate 111c. The connecting plate 111c is connected to the plate portion 11c and the locking pin 12 by the first connecting portion 112c and the second connecting portion 113c. Each of them is connected so as to be slightly swingable.

  When the plate portion 11c rotates as indicated by an arrow A12, the connecting rod 13 connected by the rod connecting portion 114c moves upward so as to push up the channel material 14. The channel member 14 has a second shaft support portion 14a that is pivotally supported with respect to the upper stiffener 5a at the right end portion in the horizontal direction, and is rotated as indicated by an arrow A13 by being pushed up by the connecting rod 13. . When the channel member 14 rotates and enters the state indicated by the alternate long and short dash line, the state in which the left side plate 5 is locked to the right side plate 5 is released.

  Next, in order to lock, the lever 11b is moved upward (opposite to the arrow A11) after horizontally rotating to a predetermined position so that the side plate 5 can be closed, contrary to the above-described unlocking. Rotate. By this operation, the locking pin 12 is inserted into the pin insertion portion 41, and the channel material 14 is covered with the upper stiffeners 5a of the left and right side plates 5.

  In the locking devices 10 and 20, the first shaft support portions 11 a and 21 a are closer to the inside of the main surface of each side plate 5, specifically, the first connecting portion 112 c to the length of the rotary levers 11 and 21. Since the ratio of the length to the 1 axis support part 11a is substantially half and the 1st axis support part 11a is provided in the approximate center part of the rotation lever 11, the rotation radius of the lever part 11b and the rotation radius of the plate part 11c are It becomes almost the same size. Therefore, the locking pin 12 can be moved upward by the amount (height H3) in which the lever portion 11b is operated downward. That is, the movement ratio of the locking pin 12 with respect to the height H3 of the operating range of the lever portion 11b is increased as compared with a rotary lever having a shaft support portion in a region near the intersection of the vertical stiffener 5c and the lower stiffener 5b. Therefore, even if the side plate 5 has a height H1 as shown in FIG. 2A or a shape or size that reduces the distance H2 between the upper stiffener 5a and the lower stiffener 5b, the rotary lever 11 Can be maintained, and the locking pin 12 can be deeply inserted into the pin insertion portion 41. In addition, since the height H3 can be reduced, even when the lever portion 11b is gripped at a high position, such as the side plate 5 positioned above the load receiving platform 4 as in the present embodiment, the height of the operator, etc. It is possible to prevent the rotation lever 11 from being influenced by the movement of the rotation lever 11 and maintain the simple operability.

  As described above, the locking devices 10 and 20 are located at positions where the locking pins 12 and 22 are close to one end of the side plate 5 on the center side of the packing box B (the end opposite to the shaft 51). Therefore, the rotation of the side plate 5 (the operation of opening the side plate 5) can be prevented with a small load. On the other hand, the long rotating lever 11 for making the locking pin 12 capable of moving a desired distance has the first shaft support portion 11a closer to the inside of the main surface, so that the lever portion 11b The operating range can also be suppressed. And since the 1st axial support part 11a is provided in the main surface inner side, since the rotation radius of the lever part 11b becomes small by the magnitude | size of the rotation radius of the plate part 11c, an operator is unexpectedly large force. Even if the lever portion 11b is operated, the load generated in the first shaft support portion 11a can be suppressed. Therefore, increasing the strength of the main surface region of the side plate 1 provided with the first shaft support portion 11a (for example, thickening) can also be suppressed. In particular, since the side plate 5 is configured to open and close horizontally, the required strength of the locking pin 12 on the end portion side (center side of the packing box B) of the side plate 5 that is located away from the shaft portion 51 can be suppressed. Further, since the moving distance of the locking pin 12 is large, the locking pin 12 can be inserted deeply into the pin insertion portion 41, and the horizontal rotation of the side plate 5 with respect to the load receiving table 4 can be ensured. Can be prevented. Since the locking pin 12 requires a large moving distance for reliable locking, the operating range of the lever portion 11b is also increased, so that the side plate 5 and the load receiving table 4 change in shape due to secular change. When the relative position between the locking pin 12 and the pin insertion portion 41 is slightly changed, there is also an effect that the operator can easily notice the change. That is, for the operator, if the lever portion 11b cannot be operated beyond the normal operation range, the insertion of the locking pin 12 into the pin insertion portion 41 is in a shallow state (a state where the locking is insufficient). It is easy to recognize.

In addition, although the effect mentioned above can be acquired because the 1st axial support part 11a is provided inward of the side plate 5 by the distance of said L1, regarding the magnitude | size of the said L1, it is in the length of the rotation lever 11. The position is not limited to the substantially central position, and may be any position as long as the locking pin 12 can be inserted deeply into the pin insertion portion 41. That is, the size of the predetermined distance L1 is appropriately set based on the protruding length of the locking pin 12 (insertion length with respect to the pin insertion portion 41) and the length of the rotary lever. It is set as the size away from the edge part of the side plate 5 so that the movement distance of the locking pin 12 provided in a part may not be suppressed.

  Further, by adopting a configuration capable of suppressing the load generated in the first shaft support portion 11a, another effect can be achieved. As shown in the schematic cross-sectional view of FIG. 3 as viewed from the line AA ′ in FIG. 2B, the rotating lever 11 is sandwiched between the upper stiffener 5a and the lower stiffener 5b, and is connected to the first shaft support portion 11a. By suppressing the load, expansion of the heights H51 and H52 and the depth D5 of these stiffeners 5a and 5b can be prevented. By preventing the heights H51 and H52 from expanding, it is possible to prevent the rotation area of the rotary lever 11 from being reduced, and to maintain its simple operability. Further, since the expansion of the depth D5 can be prevented, the volume reduction of the packing box B can be prevented.

  Furthermore, since the protruding length H12 of the locking pin 12 can be increased, the load receiving platform 4 has a tapered portion 4a at the tip thereof even though the side plate 5 and the load receiving platform 4 are separated by a distance H41. Even if the pin insertion part 41 is provided at a position separated by a distance H42 greater than the distance H41, the locking pin 12 can be reliably inserted into the pin insertion part 41. Therefore, the work receiving base 4 has the taper portion 4a, so that it is possible to ensure high work efficiency for loading and unloading the load.

  So far, the configuration in which the locking devices 10 and 20 in which the first shaft support portion 11a is provided on the inner side of the side plate 5 has been provided in the side plate 5 has been described, but the side plate 5 is provided in another packing box B. The configuration may be different. For example, as shown in FIG. 4A, in the packing box B1 in which the opening at the rear of the vehicle is opened and closed by the left and right side plates 500, the configuration in which the locking devices 110 and 210 are provided, or in FIG. As shown, in a cargo box B2 provided with side plates 501 and 502 horizontally opened and closed side by side, a load receiving table elevating device TGL such as a configuration in which locking devices 1101, 2101, 1102, and 2102 are provided is provided. It can also be applied to dump trucks that are not mounted.

  In the packing box B1 of FIG. 4A, the pin insertion part 410 is provided in the floor part BF of the packing box B1, and the locking pin 120 is located in the pin insertion part 410 at a position lower than the embodiment shown in FIG. It is locked. Therefore, the side plate 500 that is horizontally opened and closed is locked to the floor surface portion of the packing box B1. 4B, the locking pin 1201 of the locking device 1101 provided on the upper side plate 501 is inserted into the pin insertion portion 4101 provided on the lower side plate 502. It has the structure locked by. Further, in the packing box B2, the locking pin 1202 of the locking device 1102 provided on the lower side plate 502 is inserted into the pin insertion part 4202 provided on the floor surface part of the packing box B2, as in FIG. It has the structure locked by being done. Therefore, the four side plates 501 and 502 that are horizontally opened and closed are locked to the floor surface portion of the packing box B2.

  As described above, in all the embodiments, the rotary lever is located at a position away from the end opposite to the shaft by a predetermined distance so as to be inward of the side plates 5, 500, 501, 502. However, the side plates 5, 500, 501, 502 are not limited to a pair provided on the left and right sides, and the entire width of the opening may be closed with one side plate 5, 500, 501, 502. . Further, although the packing boxes B, B1, and B2 are all configured to be mounted on a dump truck, the packing boxes may be mounted on a vehicle that does not include the dump device 8 (see FIG. 1B).

  The present invention is useful for all packing boxes mounted on a vehicle body frame extending in the front-rear direction.

T dump truck B cargo box TGL loading platform lifting device F1 first vehicle frame F2 second vehicle frame 1 hinge 2 column 3 slider 4 loading platform 5 side plate 6 cross member 7 hydraulic cylinder 8 dump device 10, 20 locking device 11, 21 rotation Lever 12, 22 Locking pin (first locking part)
13 Connecting rod (connecting member)
14 Channel material (second locking part)
11a, 21a First shaft support portion 11b, 21b Lever portion 11c, 21c Plate portion 11d, 21d Biasing spring 41 Pin insertion portion (first locked portion)
4a Taper part (container)
5a Upper stiffener 5b Lower stiffener 5c Vertical stiffener

Claims (6)

A side plate having a shaft portion at one end and opened and closed horizontally around the shaft portion;
A rotating lever having a first shaft support portion in the middle portion provided in the side plate and having an axial direction in a direction substantially perpendicular to the main surface;
A first locking portion that is provided at the tip of the rotating lever and is freely accessible from below at the other end of the side plate;
A first locked portion provided below the side plate and locked by the first locking portion;
With
The cargo box mounted on a vehicle, wherein the first shaft support portion is provided at a position away from the other end portion toward the center inward by a predetermined distance. The cargo box mounted on the vehicle according to claim 1, wherein the intermediate portion is provided so that the predetermined distance is approximately ½ of a length of the rotary lever. A second locking portion having a second shaft support portion on the side plate that is different from the first shaft support portion with the intersecting direction as an axial direction;
A second locked portion provided in an adjacent portion adjacent to the side plate and locked with the second locking portion;
With
The rotating lever is connected to the second locking portion via a connecting member;
The respective connecting portions of the rotating lever and the second locking portion with respect to the connecting member are in a state of being closer to one end portion of the side plate than the first shaft supporting portion and the second shaft supporting portion in the horizontal direction. The cargo box mounted in the vehicle according to claim 1 or 2, wherein the cargo box is provided. Below the side plate, it has a lower side plate that opens and closes in the horizontal direction or up and down direction,
The first locked portion is provided on the lower side plate,
The cargo box mounted on the vehicle according to claim 1 or 2, wherein the first locking portion is locked to the first locked portion in a state where the lower side plate is closed. A pair of struts erected on the cargo box floor where the side plates are provided, a slider capable of raising and lowering the struts, and pivotally supported by the slider and standing up below the side plates. A load receiving and lowering device provided with a load receiving stand,
The first locked portion is provided on the load receiving table,
The cargo box mounted on the vehicle according to claim 1 or 2, wherein the first locking portion is locked to the first locked portion when the load receiving stand is in the standing state. The load receiving platform has a tapered portion at a rotating tip portion,
The cargo box mounted on the vehicle according to claim 5, wherein the first locked portion is provided in the tapered portion.

Images