JP2012051463A - Motor truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor truck having a frame 91 with a sheet not deteriorating the operation efficiency for discharging earth and sand.SOLUTION: In the motor truck which has a packing box having a floor plate and the gate 20 erected to the floor plate and in which the frame 4 with the sheet is pivotally supported in the upper fringe of the gate 20, in one of the frame 4 with the sheet and the gate 20 the engaging part 52 is arranged in the end of the same and the engaged part 51 is arranged in the other end, the engaging part 52 is engaged with the engaged part 51 with the frame 4 with the sheet oppositely arranged to the outside wall surface of the gate 20.

Description

  The present invention relates to a cargo box of a lorry, and more particularly to a cargo box having a seat-equipped frame at a gate.

  A sheet is disposed on at least a part of the upper opening of the cargo box in the cargo box mounted on the lorry to prevent the loaded earth and sand from scattering while the vehicle is running. The seat is hung on a frame that is erected on the floor plate of the cargo box and is rotatably supported on an upper edge portion of a side gate (side plate) located on the side of the vehicle. A unit body in which a seat is hung on this frame (hereinafter simply referred to as a “frame with seat”) covers the upper opening of the packing box manually or automatically using a hydraulic device, an electric device or the like. It is rotated so as to be positioned at the “covering position” or the “deployment position” facing the outer wall surface of the side gate.

  As shown in FIG. 5A, the seated frame 91 is supported by a bearing member 93 fixed to the front and rear ends of the side gate 92 via a support shaft 94, and the length of the side gate 92 is increased. They are arranged over almost the entire length in the direction (Patent Document 1). For example, in a dump vehicle, when earth and sand are loaded on a cargo box and traveling, the seated frame 91 is set as a covering position (one-dot chain line portion) as shown in FIG. When arriving at the transportation destination, the seated frame 91 is rotated about the support shaft 94 to the deployed position (solid line portion). Thereafter, the packing box is tilted (dumped) to the rear or side of the vehicle, and the earth and sand in the packing box are discharged.

JP 2006-76499 A

  Such a rotation operation of the frame with a sheet 91 can be easily performed either manually or automatically. However, when the rotation operation to the unfolded position is performed, the frame with a sheet 91 interferes with the side gate 92 and noise is generated. There is a problem that the generation or damage to the side gate 92 occurs.

  The manually pivoted frame 91 with the seat swings as the cargo box tilts and the side gate 92 opens and closes. Although the frame 91b has a weight that can be manually operated, the frame 91b has a weight that does not jump up due to vibrations of the vehicle when it is in the covering position. Therefore, the frame 91b interferes with the side gate 92 and generates noise. There is also damage.

  In particular, when the side gate 92 is rotated counterclockwise (when it is opened upward) as shown by a two-dot chain line in FIG. Then, it turns clockwise about the turning shaft 93 and hangs down on the turning shaft 93 of the side gate 92. Therefore, when the side gate 92 is opened upward, the seated frame 9191 largely swings, and therefore, when the side gate 92 is returned to an upright state, the above-described noise and damage problems become significant.

  Further, when the side gate 92 is opened upward, the discharged earth and sand are piled on the side of the vehicle. However, if the frame with a sheet 91 is in a suspended state, the frame with a sheet 91 may be buried in the earth and sand. Therefore, it becomes complicated to return the side gate 92 to an upright state after discharging earth and sand. Further, when the seated frame 91 is buried, when it is buried, pressure is applied to the support shaft 94 and the bearing member 93 due to the pressure of earth and sand, and deformation or the like occurs. Therefore, it becomes difficult to rotate the frame 91 with the sheet satisfactorily.

  Further, even in the automatically-rotated frame 91 with a seat, there is a possibility that the same problem may occur when the predetermined deployment position cannot be maintained due to the secular change of the hydraulic device or the electric device.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a truck equipped with a seated frame 91 that does not impair the work efficiency of discharging earth and sand.

  The truck according to the present invention has the following configuration.

  A cargo vehicle comprising a cargo box having a floor plate and a plurality of gates erected with respect to the floor plate, wherein a frame with a seat is pivotally supported on an upper edge portion of at least a part of the gate, One of the frame with the seat and the part of the gate is provided with an engaging portion at an end thereof, and an engaged portion is provided at the other end, and the frame with the seat is part of the part of the gate. The engagement portion is engaged with the engaged portion in a state of being opposed to the outer wall surface of the gate. By being engaged in this way, the seated frame is integrally connected to the part of the gates. The seated frame does not interfere with the gate.

  When the lorry according to the present invention is configured to include a dump device that can tilt the cargo box sideways or rearwardly, a state in which the seated frame is integrally connected to the part of the gates; Thus, the interference can be prevented even when the packing box is dumped.

  Further, when the part of the gates is configured to be freely opened, the frame with the seat is held in a state of being opposed to the part of the gates even when the gates are opened upward, so that the interference can be similarly prevented. .

  The engaging portion includes a cylindrical portion disposed on the part of the gates, and an engaging main body portion slidably inserted along an axial direction of the cylindrical portion, If the engaging portion has a configuration having an insertion portion through which the engaging main body portion is inserted, the seated frame can be moved relative to the partial gate only by sliding the engaging main body portion. Since the facing state can be maintained, the operation is simplified.

  By adopting the configuration of the present invention, when the packing box tilts, or when the gate opens upward or downward, the seated frame is in a state of being relatively locked to the gate. Even if vibration due to tilting or inertial force due to the opening / closing operation of the gate occurs, the seated frame can be prevented from swinging. Therefore, since the frame with the seat does not interfere with the gate, generation of noise and damage to the gate can be prevented.

(A) is a principal part side view of the dump vehicle which attached the frame with a sheet | seat, (b) is a schematic diagram which shows rotation of the frame with a sheet | seat. (A) is a principal part perspective view of the flame | frame with a sheet | seat in an expansion | deployment position, (b) is a principal part perspective view of the flame | frame with a sheet | seat when a side gate opens upwards. It is the front view and side view which show the locking member of a flame | frame with a sheet | seat. It is a principal part perspective view which shows another embodiment of a locking member. It is the side view and model which show the frame with a sheet | seat and the side gate which concern on a prior art form.

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

  FIG. 1 shows a schematic configuration of a dump vehicle 100 according to the present embodiment. The dump vehicle 100 has a configuration in which the packing box 2 mounted on the vehicle body 1 can be tilted (dumped) not only to the rear of the vehicle but also to both sides of the vehicle by the dump device 3.

  The dump device 3 includes a lift arm 31, a tension arm 32, and a telescopic cylinder 33. One ends of the lift arm 31 and the tension arm 32 are pivotally supported by a pivot pin 34. The other end of the lift arm 31 is provided on the bottom of the cargo box 2 via the cargo box side bracket 35 so as to be rotatable in the vertical and horizontal directions, and the other end of the tension arm 32 is interposed via the vehicle body side bracket 36. The vehicle body 1 is provided so as to be rotatable in the vertical direction and the horizontal direction.

  The telescopic cylinder 33 has a telescopic side distal end pivotally supported by a pivot pin 37 on the middle of the lift arm 31 and a proximal end pivotally supported by a pivot pin 38 near the other end of the tension arm 32. Yes. The cargo box 2 is tilted via the lift arm 31 and the tension arm 32 by the expansion / contraction operation of the expansion / contraction cylinder 33.

  In addition, hinge portions 21 serving as the tilt centers of the cargo box 2 are provided at the four corners of the vehicle body 1 and the cargo box 2, respectively. These hinge portions 21 are configured to be freely detachable by appropriate engagement / disengagement means. For example, the dump device 3 in a state where the left and right front hinge portions 21 are detached and only the left and right rear hinge portions 21 are engaged. If the telescopic cylinder 33 is extended, the cargo box 2 tilts backward about the hinge part 21 on the left and right rear.

  Further, if the telescopic cylinder 33 of the dump device 3 is extended with the left and right hinge portions 21 detached and only the right and left hinge portions 21 engaged, the packing box 2 moves the right and left hinge portions 21 together. Tilt to the right to the center. Conversely, if the right and left hinge parts 21 are detached and only the left and right hinge parts 21 are engaged, the left and right hinge parts 21 are tilted to the left.

  The cargo box 2 is configured to include a rear rear gate 22 and left and right side gates 20 that are erected so as to surround the floor plate. The left and right side gates 20 are configured to be openable upward and downward. Of the left and right side gates 20, one side gate (for example, the right side gate of the vehicle) is configured to rotate approximately 90 degrees when opened upward to be in a substantially horizontal state. By setting the side gate 20 to be in a state of projecting horizontally, it is possible to increase the discharge directivity when the load box 2 is tilted to the side to discharge earth and sand, and appropriate discharge work can be performed. . In particular, when a driver's seat is provided on the right side of the vehicle, the discharge state can be visually observed while driving the vehicle by setting the side gate 20 on the right side of the vehicle to a horizontal state. The left and right side gates 20 are connected to the frame 4 with a sheet at the upper edge of each.

  The seated frame 4 includes a bearing member 41, a frame 43 having a support shaft 42 that is pivotally supported by the bearing member 41, and a seat 44 that is hung on the frame 43.

  The bearing member 41 is fixed to the front end and the rear end of the upper edge portion of the side gate 20. The position and number of the bearing members 41 are not particularly limited, and may be other positions or two or more.

The frame 43 is a pipe-shaped steel material and has a shape formed by combining a substantially rectangular outer frame 43a and a substantially comb-shaped inner frame 43b. Support shafts 42 extending in the front-rear direction are fixed to the front portion and the rear portion of the outer frame 43 a, and these support shafts 42 are rotatably supported by bearing members 41.
The sheet 44 is hung so as to cover the outer frame 43a, and is hung by being tied to the outer frame 43a through a string 46 in a hole 44a provided at an end portion.

  With the above configuration, the seated frame 4 is rotatable with respect to the side gate 20 around the support shaft 42 as shown in FIG. In the figure, a position (covering position) 4 </ b> A where the seated frame 4 lies on the inner side of the cargo box with respect to the side gate 20, and a position (standing position) 4 </ b> B raised substantially along the side gate 20. The state which becomes the position (deployment position) 4C facing each other along the outer wall surface of the side gate 20 is shown.

  When the vehicle travels with earth and sand loaded in the packing box 2, the seated frame 4 is set to the covering position 4A. This is to prevent the earth and sand from scattering. It should be noted that the connecting bands 45 (not shown) attached to the outer frames 43a of the frame 43 are connected in a state where both the frame 4 with the seat pivotally supported by the left and right side gates 20 are in the covering position 4A. Thus, the state of the covering position 4A can be maintained.

  When discharging earth and sand or the like, the frame 4 with the sheet at the covering position 4A is manually set to the standing position 4B and further to the development position 4C. Thereby, the upper opening part of the packing box 2 is opened largely.

  The seated frame 4 at the deployed position 4C is secured to the side gate 20 by a lock device 5 provided on the vehicle front side. The locking device 5 will be described with reference to FIG. FIG. 2A is a perspective view of the main part in a state where the side gate 20 stands in the vertical direction, and FIG. 2B is a perspective view of the main part in a state where the side gate 20 is lying down in the horizontal direction.

  One locking device 5 is arranged on each of the front left and right sides of the vehicle, and includes an engaged portion 51 attached to the frame 4 with the seat and an engaging portion 52 attached to the side gate 20. The engaging portion 52 is configured to be engaged with the engaged portion 51 when the attached frame 4 is at the deployed position 4C.

  The engaged portion 51 has an arm portion 51a fixed to the frame 43 (outer frame 43a) and an annular portion 51b fixed to the tip of the arm portion 51a, and a seat is attached to the deployed position 4C. When the frame 4 is rotated, the annular portion 51 b is provided so as to be positioned on the vehicle front side of the side gate 20.

  The engaging portion 52 includes a cylindrical portion 52a fixed to a side edge portion of the side gate 20 on the front side of the vehicle, a rod portion (not shown) provided in the cylindrical portion 52a, and an inner side of the cylindrical portion 52a. A spring member 52b whose one end is fixed to the end portion and biases the rod portion vertically downward (Z direction in the figure), and a notch portion 521a that is attached to the rod member and provided in the cylindrical portion 52a sideways. And a handle portion 52c projecting from the head. The engaging portion 52 is arranged so that the annular portion 51b of the engaged portion 51 is arranged in a substantially straight line along the longitudinal direction of the tubular portion 52a when the seated frame 4 is at the deployed position 4C.

  In order to engage the engaging portion 52 with the engaged portion 51, the operator holds the handle 52c and moves it vertically downward (arrow R2). On the other hand, to release this engagement, the handle 52c is moved vertically upward (arrow R1). When locked by the locking device 5, the seated frame 4 cannot rotate with respect to the side gate 20. Therefore, even if the side gate 20 is laid down in a substantially horizontal state (a state substantially flush with the floor plate 2a) as shown in FIG. . That is, the seated frame 4 is kept facing the side gate 20 and does not hang down. Therefore, the seated frame 4 does not interfere with obstacles or the like below the side gate 20, and even if the cargo box 2 is tilted sideways, the seated frame 4 is not buried in the discharged sand or the like. . Note that when the side gate 23 is laid down, the lock lever 23 (see FIG. 1A) is operated to release the side gate 20 from being fixed. Regarding the fixing of the side gate 20, the lock lever 23 is configured such that the hook portion 23 a at the tip is engaged with the rectangular frame-shaped fixing portion 24. The fixing portion 24 is fixed to a fixed column erected on the front plate or the four corners of the packing box 2, to which the side gate 20 is fixed.

  The locking device 5 will be specifically described with reference to FIG. FIG. 3A is a plan view seen from the extending direction of the handle 52c, and FIG. 3B is a plan view seen from a direction perpendicular to the extending direction.

  The cylindrical part 52a has a substantially L-shaped notch 521a at the center in the extending direction. When the handle 52c protruding from the notch 521a is positioned at the lower end P1 of the notch 521a as shown in the drawing, the tip of the rod member 52d provided in the cylindrical portion 52a protrudes, The distal end portion is inserted into the annular portion 51 b of the engaged portion 51, and the engaging portion 52 engages with the engaged portion 51. At this time, the rod member 52d is constantly biased downward (the side from which the tip of the rod member 52d protrudes) by the spring member 52b, so that the tip of the rod member 52d is not pulled out from the annular portion 51b. Therefore, the seated frame 4 is held in the state of the development position 4 </ b> C with respect to the side gate 20. On the other hand, when the operator grips the handle portion 52c and moves the handle portion 52c upward while resisting the biasing force of the spring member 52b, the operator moves to the side end portion P2 of the L-shaped notch 521a. The rod member 52d is moved upward and fixed. At this time, the distal end portion of the rod member 52d is pulled out from the annular portion 51b, and the engaging portion 52 and the engaged portion 51 are brought into a disengaged state. That is, the binding to the side gate 20 of the frame 4 with the seat is released. Thus, the rod member 52d directly contributes to the engagement between the engaging portion 52 and the engaged portion 51 and functions as an engaging main body portion. The rod member 52d is slid up and down in the cylindrical portion 52a, and the engagement position (the handle portion 52c is located at the lower end portion P1) and the engagement release position (the handle portion 52c are located at the side end portion P2). The operator can easily select the locked or unsecured state of the seated frame 4 simply by moving between the two. The rod member 52d has a shape in which the tip portion extends in the vertical direction, but may be substantially J-shaped. In this case, when the seated frame 4 is at the deployed position 4C, the annular portion 51b of the engaged portion 51 may not be arranged so as to be substantially aligned with the cylindrical portion 52a of the engaging portion 52. Absent.

  The locking device 5 as described above can prevent the seated frame 4 from swinging with respect to the side gate 20. However, the configuration of the locking device 5 is not limited to this, and for example, as shown in FIG. A substantially L-shaped engaging portion 62 pivotally supported by the side edge of the side gate 20 may be engaged with the substantially L-shaped engaged portion 61 at the side edge of 43a. The engaging portion 62 is supported so as to be rotatable in the direction of the arrow with the support shaft 62 a as a rotation center, and an opening 62 b provided at the tip of the engaging portion 62 is locked to the engaged portion 61. As a result, the seated frame 4 is held at the deployed position 4C.

As described above, the engaged portions 51 and 61 and the engaging portions 52 and 62 may have other configurations as long as they are engaged with each other. Further, in addition to the configuration of directly engaging each other, a configuration of indirectly engaging using a connecting member such as a string may be used.
The engaged portions 51 and 61 may be provided on the side gate 20, and the engaging portions 52 and 62 may be provided on the frame 43.

  In addition, regarding the engaging portion 52 that is elastically urged by the spring member 52b, a form using elasticity such as rubber may be used. Furthermore, a configuration that does not use elastic urging is also applicable. For example, the notch portion 521a of the cylindrical portion 52a is formed in a substantially U shape or a hook shape, so that the state in which the tip end portion of the rod member 52d protrudes and the state in which it does not protrude can be maintained. 5 may be selected by the operator.

  Regarding the mounting position of the locking device 5, it may be provided not only on the front side of the side gate 20 but also on the vehicle rear side. Moreover, you may provide in the vehicle both front and back both sides. Further, the engaged portion 51 or the engaging portion 52 is attached to the outer frame 43a portion extending in the longitudinal direction of the frame 43 of the seated frame 4, and is engaged with the lower end portion along the longitudinal direction of the side gate 20. The part 52 or the engaged part 51 may be attached. In addition, although the frame 4 with the seat is provided on the side gate 20, a configuration provided on the rear gate 22 is also applicable.

  In addition, although the said frame 4 with a sheet | seat demonstrated based on the vehicle provided with the dump device 3, it is applicable also to the lorry which is provided with the cargo box 2 but is not equipped with the dump device 3. FIG. Moreover, although it demonstrated based on the motion of the flame | frame 4 with a sheet | seat accompanying the upper opening of the side gate 20, when the side gate 20 opens downward, the rocking | fluctuation of the flame | frame 4 with a sheet | seat can be prevented similarly.

DESCRIPTION OF SYMBOLS 1 Car body 2 Cargo box 3 Dump device 4 Frame 5 with seat Lock device 20 Side gate 21 Hinge part 22 Rear gate 41 Bearing member 42 Support shaft 43 Frame 44 Seat 51 Engagement part 52 Engagement part 51a Arm part 51b Annular part 52a Tube 52b Spring member 52c Handle 52d Rod member 521a Notch

Claims (4)

A cargo vehicle comprising a cargo box having a floor plate and a plurality of gates erected with respect to the floor plate, wherein a frame with a seat is pivotally supported on an upper edge portion of at least a part of the gate,
One of the frame with a seat and the part of the gates is provided with an engaging portion at an end thereof, and an engaged portion is provided at the other end thereof,
The lorry characterized in that the engaging portion is engaged with the engaged portion in a state in which the seated frame is disposed opposite to the outer wall surface of the partial gate. The truck according to claim 1, further comprising a dump device that can tilt the cargo box sideways or rearward. The lorry according to claim 1, wherein the part of the gates is configured to be freely opened upward. The engaging portion includes a cylindrical portion disposed on the part of the gates, and an engaging main body portion slidably inserted along the axial direction of the cylindrical portion,
The lorry according to any one of claims 1 to 3, wherein the engaged portion includes an insertion portion through which the engagement main body portion is inserted.

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