Cargo automatic vehicle

Abstract

To guarantee normal operation of a selector valve controlling winch and the like for a long term and to simplify maintenance.SOLUTION: A truck includes: a winch 3 which fixes a front guard frame 2 in a vertical posture to a front part of a load-carrying platform 1 and pulls a mounting object 9 up to the load-carrying platform 1; and a tilt mechanism 4 tilting the load-carrying platform 1. An actuator 7 driving the winch 3 and the tilt mechanism 4 is driven by a driving device 5. The front guard frame 2 connects a horizontal frame 22, in the horizontal position, to a pair of side frames 21 fixed on both sides of the load-carrying platform 1 in the vertical posture. The driving device 5 is provided with an electric selector valve 53 controlling the winch 3 and the tilt mechanism 4. The selector valve 6 has a body part 6A provided with a changeover switch 56 switching an electric circuit 52 and a control valve 55, the body part being arranged in an opening window 20 of the front guard frame 2 and fixed on a lower surface of the horizontal frame 22 with an operation lever 6B switching the changeover switch 56 in a downward posture.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a freight vehicle used primarily for transporting heavy machinery, and in particular to a freight vehicle having a torii gate at the front of the loading platform. [Background technology]

[0002] Trucks that transport heavy machinery have a torii fixed vertically to the front of the loading platform. (See Patent Documents 1 to 3.) This truck is equipped with a tilting mechanism that tilts the bed and a winch that lifts the heavy equipment onto the bed. This truck tilts the bed downward toward the rear using the tilting mechanism, and in this position, the winch wire is connected to the heavy equipment or other vehicle being loaded, and the wire is wound up to lift the loaded vehicle onto the bed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 52-1814 [Patent Document 2] Japanese Patent Application Publication No. 11-170873 [Patent Document 3] Japanese Patent Application Publication No. 07-266968 Summary of the Invention [Problem to be solved by the invention]

[0004] The above freight vehicle has an opening window in the center of the lower part of the torii gate, and a winch is placed inside the opening window on the cabin side. The winch pulls out a wire from the opening window, connects the end of the wire to the load, and pulls it up to the loading platform. This freight vehicle uses a tilting mechanism to tilt the loading platform downward toward the rear end, and the winch winds up the wire to pull the load up to the loading platform. As shown in FIG. 6, in the conventional freight vehicle, a changeover valve 96 that controls the operation of the tilting mechanism and winch 93 is placed next to the opening window 90 in which the winch 93 is placed. The changeover valve 96 operates an operating lever 96B to control the hydraulically driven winch 93 and the actuator of the tilting mechanism. The changeover valve 96 placed next to the opening window 90 has a main body 96A provided with electric circuits such as an electric changeover switch (not shown) in addition to a pressure oil control valve, and connects an operating lever 96B to the main body 96A. The operating lever 96B is connected to the main body 96A so that it can be tilted. The electric control valve with built-in electric circuit is placed in a middle position when not in operation, and the operator tilts the operation lever 96B back and forth to switch the change-over switch, which switches a solenoid (not shown) that is energized, and switches the hydraulic circuit of the control valve to rotate the hydraulic motor of the winch forward or backward, and further expands or contracts the hydraulic cylinder that tilts the loading platform to tilt the loading platform or control it to a horizontal position. The change-over valve can be switched directly by the operation lever without going through an electric circuit. In recent years, freight vehicles are required to have an operator remotely control the change-over valve from a location away from the change-over valve to operate the winch and tilting mechanism, so the change-over valve is a type with built-in electric circuit and has a structure that allows remote control.

[0005] In the conventional torii, as shown in Fig. 6, the main body 96A of the switching valve 96 is fixed to the upper surface of the horizontal frame 92A of the torii 92 so that the operating lever 96B extends upward. In the switching valve 96 fixed to the torii 92 in this structure, rainwater flows down along the operating lever 96B into the main body 96A, causing the electrical circuit to break down. The switching valve 96 is placed in an exposed location exposed to rainwater, and is placed with the operating lever 96B facing upward and the lower end of the operating lever 96B inserted into the main body 96A containing the electrical circuit, which is a drawback in that it is extremely difficult to realize a completely waterproof structure for a long period of time and maintain an ideal state to prevent insulation failure due to rainwater.

[0006] The present invention was developed with the aim of eliminating the above-mentioned conventional drawbacks, and an important object of the present invention is to provide a freight vehicle which can ensure normal operation of the switching valve for a long period of time and simplify maintenance. [Means for solving the problem]

[0007] The truck of the present invention includes a torii 2 fixed in a vertical position to the loading platform 1, a winch 3 fixed to the front of the loading platform 1 to lift a load 9 onto the loading platform 1, a tilting mechanism 4 to tilt the loading platform 1, an actuator 7 to hydraulically drive the winch 3 and the tilting mechanism 4, and a drive unit 5 to drive the actuator 7. The torii 2 includes a pair of side frames 21 fixed in a vertical position on both sides of the loading platform 1, and a horizontal frame 22 connected to the side frames 21 in a horizontal position. The winch 3 includes a drum 32 that winds up a wire 33 that lifts the load 9. The drive unit 5 includes an electric switching valve 6 that controls the operation of the actuator 7 that drives the winch 3 and the tilting mechanism 4. The switching valve 6 includes a main body 6A and an operating lever 6B connected to the main body 6A so as to be tiltable and protruding from the main body 6A to the outside. The main body 6A is equipped with a change-over switch 56 that switches the electric circuit 52 with a manual operating lever 6B, and a control valve 55 that is controlled by the change-over switch 56 to control the operation of the actuator 7. The torii 2 has an opening window 20 below the horizontal frame 22. The change-over valve 6 has the main body 6A fixed to the underside of the horizontal frame 22 in a downward position with the operating lever 6B extending downward, and the main body 6A and the operating lever 6B are disposed within the opening window 20.

[0008] The above freight vehicle has the feature of being able to guarantee the normal operation of the change-over valve for a long period of time and simplify maintenance. This is because the above freight vehicle is equipped with an electric change-over valve that controls the operation of an actuator that hydraulically drives a winch fixed to the front of the loading platform and a tilting mechanism that tilts the loading platform, and this change-over valve has a main body and an operating lever that is connected to the main body so as to be able to tilt freely and protrudes to the outside, and is located in an opening window provided below the horizontal frame of a torii gate that is fixed in a vertical position to the loading platform, and in particular, the main body is fixed to the underside of the horizontal frame so that the operating lever is in a downward position extending downward.

[0009] In the above truck, the lever protruding from the main body of the switching valve is fixed to the underside of the horizontal frame so that it faces downward within the opening in the torii gate, so that rainwater is prevented from flowing down along the downward operating lever and entering the inside of the main body. This reliably prevents the problem of rainwater flowing down the main body along the upward operating lever and causing damage to the electrical circuit, as in the conventional case, and prevents the switching valve from breaking down due to rainwater for a long period of time, while ensuring the normal operation of the switching valve and simplifying maintenance.

[0010] The present invention is not limited to a freight vehicle, but may have the following configuration: The freight vehicle of the present invention has a horizontal frame 22 having a horizontal frame 22A with both ends connected to the upper ends of a pair of side frames 21, and an intermediate frame 22B disposed below the horizontal frame 22A and connected to the side frames 21 at both ends, and an opening window 20 is provided in the center below the intermediate frame 22B, and a main body 6A of a switching valve 6 can be fixed to the lower surface of the intermediate frame 22B. In the above-mentioned freight vehicle, the horizontal frame is equipped with a horizontal frame connected to the upper ends of a pair of side frames, and an intermediate frame arranged below the horizontal frame, and an opening window is provided in the lower center of the intermediate frame, and the main body of the switching valve is fixed to the underside of this intermediate frame.Therefore, the strength of the torii is increased by the horizontal frame and the intermediate frame connected above and below the side frames, while the main body of the switching valve can be arranged in a predetermined posture within the opening window formed below the intermediate frame.

[0011] In addition, in the freight vehicle of the present invention, the torii gate 2 can be provided with storage sections 24 on both sides of the opening window 20. The above freight vehicles have the feature of being able to provide storage areas on both sides of the opening window, making the storage space of the torii larger. This is because the changeover valve, which was placed on the side of the opening window of the torii in conventional freight vehicles, is placed in the center of the torii, making both sides of the opening window into storage space. Freight vehicles use various tools to lift the load onto the bed, and also use many tools for other work. For this reason, being able to increase the storage space for tools improves work efficiency and also realizes features such as being able to store tools and travel safely.

[0012] Furthermore, in the freight vehicle of the present invention, a awning plate 28 that is wider than the intermediate frame 22B can be fixed to the lower surface of the intermediate frame 22B, and the main body portion 6A can be fixed to the lower surface of this awning plate 28. The above freight vehicles further have the features of reducing the occurrence of breakdowns of the electric change-over valve due to rainwater, eliminating insulation defects in the electric circuit of the change-over valve over an extremely long period of time, and making maintenance easier.

[0013] Furthermore, the freight vehicle of the present invention further comprises a cabin 11 which constitutes the driver's cab and is arranged in front of the cargo bed 1, and the drive unit 5 comprises a hydraulic pump 53 which supplies pressurized oil to the switching valve 6, and an oil tank 54 which is connected to the hydraulic pump 53, and the oil tank 54 can be arranged between the torii gate 2 and the cabin 11. The above freight vehicles have the feature that the oil tank, which was previously installed in the torii, is placed between the torii and the cabin, thereby increasing the storage space in the torii.

[0014] Furthermore, in the truck of the present invention, a switching valve 6 and a winch 3 can be arranged in the opening window 20. In the above freight vehicles, both the winch and the change-over valve are located in the opening window, so the change-over valve can be located near the winch. This structure has the characteristic that the operator can operate the change-over valve with one hand and adjust the winding position of the wire with the other, winding the wire in the ideal state and lifting the load onto the bed.

[0015] Furthermore, in the truck of the present invention, the tilting mechanism 4 can be an outrigger 40 that tilts the entire vehicle.

[0016] Furthermore, the freight vehicle of the present invention is provided with a tilting mechanism 4 of, A tilting cylinder that tilts the loading platform 1 without tilting the entire vehicle To can.

[0017] Furthermore, the truck of the present invention can be provided with a locking portion 29 at the opening window 20 for connecting a pulley 35 for hanging the wire 33 of the winch 3. The above-mentioned freight vehicles are provided with a locking part for connecting a pulley to the opening window, so that by hooking the pulley to this locking part, the pulley can be simply and easily positioned in a fixed position on the opening window, and by hanging the winch wire on this pulley, the wire can be ideally pulled out and wound up. [Brief description of the drawings]

[0018] [Figure 1] 1 is a side view of a truck according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a side view showing the state in which the cargo bed of the truck shown in FIG. 1 is tilted. [Diagram 3] 2 is a cross-sectional view of the torii gate of the freight truck shown in FIG. 1 as seen from the rear. [Figure 4] FIG. 2 is a block diagram of a drive device. [Diagram 5] 4 is an enlarged cross-sectional view of the torii gate shown in FIG. 3 taken along line VV. [Figure 6] FIG. 1 is a front view of a conventional freight car torii gate. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The present invention will be described in detail below with reference to the drawings. In the following description, terms indicating specific directions or positions (e.g., "upper", "lower", and other terms including these terms) are used as necessary, but the use of these terms is for the purpose of facilitating understanding of the invention with reference to the drawings, and the meanings of these terms do not limit the technical scope of the present invention. In addition, parts with the same reference numerals appearing in multiple drawings indicate the same or equivalent parts or members. Furthermore, the embodiments shown below are specific examples of the technical ideas of the present invention, and do not limit the present invention to the following. Furthermore, unless otherwise specified, the dimensions, materials, shapes, relative positions, etc. of the components described below are intended to be illustrative and not to limit the scope of the present invention. Furthermore, the contents described in one embodiment or example can be applied to other embodiments or examples. Furthermore, the sizes and positional relationships of the components shown in the drawings may be exaggerated to clarify the explanation.

[0020] A freight vehicle according to an embodiment of the present invention is shown in Figs. 1 to 3. Fig. 1 is a side view of the freight vehicle, Fig. 2 is a side view of the freight vehicle in Fig. 1 with the bed tilted, and Fig. 3 is a cross-sectional view of the freight vehicle as seen from the rear. The freight vehicle of the present invention is used to transport loads such as heavy machinery on the bed. The freight vehicle 100 shown in Fig. 1 has a bed 1 for carrying loads 9 behind a cabin 11, which is the driver's compartment.

[0021] The freight vehicle 100 in the figure has a cargo bed 1 and a driver's cabin 11 fixed to a chassis 10. The cabin 11 is connected to the front of the chassis 10, and the cargo bed 1 is fixed to the rear of the cabin 11. The cargo bed 1 is at the front, and a torii gate 2 is fixed in a vertical position behind the cabin 11. Furthermore, a winch 3 is fixed to the chassis 10 in front of an opening window 20 provided in the torii gate 2. Furthermore, outriggers 40 of a tilting mechanism 4 that tilts the cargo bed 1 downward toward the rear are fixed to the chassis 10. The freight vehicle 100 in the figure has outriggers 40 fixed to both sides of the torii gate 2. The outriggers 40 incorporate hydraulic cylinders (not shown), and the hydraulic cylinders are extended to tilt the entire vehicle and tilt the cargo bed 1.

[0022] As shown in Fig. 2, a freight vehicle 100 that tilts the entire vehicle with outriggers 40 to tilt the loading platform 1 downward can tilt the loading platform 1 by incorporating the outriggers 40 in the torii gate 2. However, the present invention is not limited to a structure that tilts the entire vehicle to tilt the loading platform 1, and can also use an already known structure that tilts the loading platform relative to the chassis. For example, this freight vehicle has a rear end connected to the chassis so that the loading platform can be tilted, or a structure in which the loading platform can slide backward relative to the chassis, and the chassis and loading platform are connected by a tilting cylinder, and the tilting cylinder is extended and retracted to tilt only the loading platform.

[0023] The winch 3, which pulls up the load 9 onto the platform 1, and the tilt mechanism 4, which tilts the platform 1, are driven by an actuator 7 that is hydraulically driven. The winch 3 is equipped with a drum 32 that winds up a wire 33 that pulls up the load 9. The drum 32 is rotated by a hydraulic motor 31 of the actuator 7 to wind up the wire 33 and pull up the load 9 onto the platform 1. The hydraulic motor 31 rotates the drum 32 forward and backward to pull out the wire 33 or wind up the wire 33 and pull the drum 32 onto the platform 1. The winch 3 is disposed on the cabin 11 side of the torii 2, and is structured so that the wire 33 wound up by the drum 32 can be pulled out towards the platform 1 through an opening window 20 (described in detail later) provided in the torii 2. A freight vehicle 100 with a loading platform 1 fixed to a chassis 10 has a winch 3 arranged on the cabin 11 side of the torii 2, tilts a runway 12 provided at the rear end of the loading platform 1 while tilting the entire vehicle, and winds up a wire 33 with the winch 3 to lift the load 9 from the runway 12 to the loading platform 1. A freight vehicle that directly lifts the load onto the loading platform without using a runway moves the loading platform backward while tilting the entire vehicle, moves the rear end of the loading platform closer to the ground, and lifts the load onto the loading platform. Although not shown, this freight vehicle does not have a winch arranged on the cabin side of the torii, but has a winch arranged on the loading platform to directly lift the load onto the loading platform. This freight vehicle has a winch arranged on one side of the front of the loading platform, and a pulley for hanging the wire to be wound by the winch arranged in the center of the loading platform, so that the load can be lifted onto the loading platform. Furthermore, although not shown, a freight truck that lifts a load onto the bed via a rung can also have a winch placed on one side of the front of the bed and the winch wire pulled out in the longitudinal direction of the bed via a pulley connected to the front of the bed to lift the load onto the bed.

[0024] The tilting mechanism 4 uses a hydraulic cylinder 41 fixed to the chassis 10 as an actuator 7 to tilt the entire vehicle and tilt the loading platform 1. The hydraulic motor 31 and hydraulic cylinder 41, which are the actuator 7, are connected to the drive unit 5, and the drive unit 5 rotates the drum 32 of the winch 3 with the hydraulic motor 31 to wind up the wire 33, and extends and retracts the outriggers 40 with the hydraulic cylinder 41 to tilt the loading platform 1. In the freight vehicle 100 in Figures 2 and 3, the outriggers 40 of the tilting mechanism 4 that tilts the loading platform 1 are provided at the torii gate 2.

[0025] The outrigger 40 is equipped with a hydraulic cylinder 41 for an actuator 7, and a telescopic leg 42 that extends and retracts up and down by this actuator 7. The actuator 7 is built into the square pipe side frames 21 provided on both sides of the torii gate 2, and when the hydraulic cylinder 41 extends, it pushes the telescopic leg 42 out of the square pipe to tilt the entire vehicle, and when the hydraulic cylinder 41 contracts, it stores the telescopic leg 42 in the square pipe to put the vehicle in a horizontal position.

[0026] The torii 2 comprises a pair of side frames 21 fixed in a vertical position on both sides of the loading platform 1, and a plurality of horizontal frames 22 connected to the side frames 21 in a horizontal position. The torii 2 in FIG. 3 has a plurality of horizontal frames 22 connected to the side frames 21. The side frames 21 and the horizontal frames 22 are metal square pipes. However, the side frames and the horizontal frames of the torii are not limited to square pipes, and any metal rod material having a width (W) of, for example, 5 cm or more, preferably 10 cm or more, such as a channel or angle made by processing a metal plate into an L-shape or groove shape, or a metal shaped steel can also be used. Here, the width (W) of the side frames 21 and the horizontal frames 22 refers to the width in the longitudinal direction of the loading platform 1, that is, in the front-rear direction of the vehicle.

[0027] The horizontal frame 22 of the torii 2 in FIG. 3 is composed of a horizontal frame 22A, both ends of which are connected to the upper ends of a pair of side frames 21, and an intermediate frame 22B, which is located below the horizontal frame 22A and has both ends connected to the side frames 21. The intermediate frame 22B has both ends connected to the approximately center of the side frames 21. Furthermore, the torii 2 in FIG. 3 connects two rows of vertical frames 23 between the pair of side frames 21. The spacing between the two rows of vertical frames 23 is wider than the spacing between the side frames 21 on both sides, and the lower part of the intermediate frame 22B between the two rows of vertical frames 23 is an opening window 20. The opening window 20 is an opening for pulling out the wire 33 of the winch 3 to the loading platform 1 side. The torii 2 in the figure has a storage section 24 between the vertical frames 23 and the side frames 21 on both sides of the opening window 20. Furthermore, the torii 2 in Fig. 3 has three storage compartments 24 between the intermediate frame 22B and the horizontal frame 22A, and all other areas except the open window 20 are used as storage compartments 24, increasing the volume of the storage compartments 24. The storage compartments 24 have an opening / closing lid 25 on the loading platform 1 side. One side of the opening / closing lid 25 is connected to the side frame 21 or the vertical frame 23 with a hinge 26, so that it can be opened and closed. The storage compartments 24 provided in the center above the intermediate frame 22B are provided on both sides of a compartment frame 27 disposed in a vertical position between the left and right vertical frames 23. However, the storage compartment provided in the center above the intermediate frame may be made wider than the other storage compartments and provided with a double-sided opening / closing lid without providing a compartment frame.

[0028] 4 is a block diagram of a drive unit 5 including a hydraulic circuit 51 that drives the hydraulic motor 31 of the winch 3 and extends and retracts the hydraulic cylinder 41 of the tilt mechanism 4, and an electric circuit 52 that controls this hydraulic circuit 51. The drive unit 5 in this figure includes an electric switching valve 6 that controls the operation of the hydraulic motor 31 and the hydraulic cylinder 41 of the actuator 7 that drives the winch 3 and the tilt mechanism 4, a hydraulic pump 53 that supplies pressure oil to the switching valve 6, and an oil tank 54 connected to the hydraulic pump 53. The hydraulic pump 53 draws oil from the oil tank 54 and supplies it to the switching valve 6 via a pressure regulator (not shown) connected to the output side. The switching valve 6 switches the pressure oil supplied from the hydraulic pump 53 to the hydraulic motor 31 and the hydraulic cylinder 41 to rotate the hydraulic motor 31 forward or reverse and extend or retract the hydraulic cylinder 41.

[0029] 4 shows a hydraulic circuit 51 in which a switching valve 6 supplies pressure oil from a hydraulic pump 53 to a hydraulic motor 31 and a hydraulic cylinder 41 to rotate the hydraulic motor 31 in the normal or reverse direction and extend or retract the hydraulic cylinder 41. This switching valve 6 is equipped with a control valve 55 that switches the hydraulic circuit 51 with a solenoid (not shown). When the solenoid is not energized, the control valve 55 is in the position shown in the figure, and does not rotate the hydraulic motor 31 or extend or retract the hydraulic cylinder 41. When one solenoid of the control valve 55 is energized, a spool 55A moves to the right or left to rotate the hydraulic motor 31 in the normal or reverse direction and extend or retract the hydraulic cylinder 41.

[0030] The switching valve 6 is provided with a changeover switch 56 that switches the hydraulic circuit 51 by energizing the solenoid. The electric type switching valve 6 shown in the block diagram of FIG. 4 is provided with a changeover switch 56 that controls energization of a pair of solenoids that move the spool 55A to the right or left. The changeover switch 56 switches the electric circuit 52 with a manual operation lever 6B to select the solenoid to be energized. When the operation lever 6B is in the neutral position, the changeover switch 56 is held in the OFF state. For example, in FIG. 4, when the operation lever 6B of the switching valve 6 that controls the rotation of the hydraulic motor 31 is tilted in the direction indicated by the arrow A and moved to the dashed line position, one contact 56a that rotates the hydraulic motor 31 in the forward direction is connected to the battery of the power source 57, and the solenoid on the forward rotation side is energized via the contact 56a, and the spool 55A of the control valve 55 is moved from the neutral position to supply pressure oil in the direction that rotates the hydraulic motor 31 in the forward direction, and the hydraulic motor 31 is rotated in the forward direction by the pressure oil supplied from the control valve 55. When the operator tilts the operating lever 6B to the reverse rotation side, the other contact 56b, which rotates the hydraulic motor 31 in the reverse direction, is connected to the power source 57, and electricity is applied to the solenoid on the reverse rotation side via the contact 56b, causing the hydraulic motor 31 to rotate in the reverse direction.

[0031] The switching valve 6 is connected to a main body 6A equipped with a changeover switch 56 and a control valve 55 so that an operating lever 6B can be tilted. When an operator tilts the operating lever 6B, the contacts 56a and 56b of the changeover switch 56 are switched. The operating lever 6B is held in a neutral position when the operator is not operating it through an elastic body (not shown). In order to prevent insulation failure caused by rainwater, the electric type switching valve 6 equipped with a changeover switch 56 consisting of an electric circuit 52 has the main body 6A fixed to the lower surface of the horizontal frame 22 with the operating lever 6B in a downward position extending downward, and the main body 6A and the operating lever 6B are placed inside the opening window 20 of the torii 2. The cross-sectional view of FIG. 5 shows the fixing part of the switching valve 6. In the switching valve 6 shown in this cross-sectional view, the eaves plate 28 is fixed to the lower surface of the intermediate frame 22B, which is the horizontal frame 22, and the main body 6A is fixed to the lower surface of the eaves plate 28 with the operating lever 6B in a downward position.

[0032] The width (H) of the eaves plate 28 is wider than the width (W) of the horizontal frame 22, and furthermore, the side edges are provided with inclined portions 28A that are inclined downward toward the outside on both sides. The eaves plate 28 in the figure has inclined portions 28A on both sides. The structure in which the eaves plate 28 having a width (H) wider than the horizontal frame 22 is provided and the main body 6A of the switching valve 6 is fixed under the eaves plate 28 has the characteristic that the insulation failure of the switching valve 6 due to rainwater can be more effectively prevented since the upper part of the main body 6A can be covered with the wider eaves plate 28. However, it is also possible to prevent insulation failure due to rainwater with the horizontal frame 22 by fixing the main body 6A to the lower surface of the horizontal frame 22 with the operating lever 6B facing downward without providing the eaves plate 28. In particular, for horizontal frames 22 having a wide width (W), for example a width of 10 cm or more, the horizontal frames 22 can be fixed to the lower surface of the horizontal frames 22 without providing the eaves plate 28, thereby preventing insulation failure due to rainwater and the like.

[0033] The above freight vehicle 100 is structured so that the wire 33 of the winch 3 arranged on the cabin 11 side of the torii 2 is passed through the opening window 20 of the torii 2 and pulled out to the rear of the loading platform 1. In this freight vehicle 100, the wire 33 of the winch 3 can be pulled out directly to the rear, but as shown in FIG. 3, it can also be pulled out to the rear via a pulley 35 arranged in the opening window 20. The pulley 35 shown in the figure has a disk 35A on which the wire 33 is hung and a support part 35B that rotatably supports the disk 35A, and the support part 35B has a locking hook 36 for connecting the pulley 35 to the torii 2. The torii 2 shown in the figure has a locking part 29 for connecting the locking hook 36 of the pulley 35 to place the pulley 35 at a fixed position in the opening window 20. The locking part 29 shown in the figure is a U-shaped curved metal rod with both ends fixed to the intermediate frame 22B to be placed in a fixed position. The pulley 35 shown in Fig. 3 is disposed inside the open window 20 of the torii 2 and above the winch 3. Therefore, the locking portion 29 in the figure is located in the center of the open window 20 and is fixed to the lower surface of the intermediate frame 22B. As shown in Fig. 3, the pulley 35 is hung with the locking hook 36 hooked onto the locking portion 29 so that the rotation axis of the disk 35A is in a horizontal position. In this state, the wire 33 pulled out from the winch 3 is hooked onto the disk 35A and pulled out backward, and the wire 33 is also wound up. [Industrial Applicability]

[0034] The freight vehicle of the present invention can be effectively used as a vehicle that lifts a load 9 such as heavy machinery onto the loading platform 1 and transports it. [Explanation of symbols]

[0035] 100…lorry 1. Cargo platform 2. Torii gate 3. Winch 4…Tilt mechanism 5. Drive unit 6...Switch valve 6A…Main body 6B…Operating lever 7...Actuator 10…Chassis 11. Cabin 12...walking board 20...Opening window 21...Side frame 22…Horizontal frame 22A…Horizontal frame 22B...Intermediate frame 23…Vertical frame 24…Storage section 25…Opening and closing lid 26…Hinge 27…Partition frame 28…Eaves board 28A…Slope part 29…Latching part 31...Hydraulic motor 32...Drums 33…Wire 35...Pulley 36…Latching hook 40…Outrigger 41...Hydraulic cylinder 42...Telescopic legs 51...Hydraulic circuit 52...Electrical circuit 53...Hydraulic pump 54…Oil tank 55...Control valve 55A…spool 56...Changeover switch 56a, 56b...Contact points 57…Power supply 90…Opening window 92…Torii gate 92A…Horizontal frame 93…Winch 96...Switch valve 96A…Main body 96B…Operating lever

Claims

1. A torii gate fixed vertically to the front of the loading platform; A winch fixed to a front part of the loading platform and configured to lift an object onto the loading platform; A tilting mechanism for tilting the loading platform; An actuator that hydraulically drives the winch and the tilt mechanism; A truck comprising: The torii gate, A pair of side frames fixed in a vertical position on both sides of the loading platform; a horizontal frame connected to the side frame in a horizontal position, The winch, It is equipped with a drum that winds up the wire that lifts the payload. The drive device is an electric switching valve that controls the operation of the actuator that drives the winch and the tilt mechanism; The switching valve is a main body portion; and an operating lever that is connected to the main body portion so as to be tiltable and protrudes from the main body portion to the outside, The main body portion is A change-over switch for switching an electric circuit by the manual operation lever; a control valve controlled by the change-over switch to control the operation of the actuator; The torii gate is An opening window is provided below the horizontal frame, The switching valve is A truck characterized in that the main body is fixed to the underside of the horizontal frame in a downward position with the operating lever extending downward, and the main body and the operating lever are disposed within the opening window.

2. A truck according to claim 1, The horizontal frame is a horizontal frame formed by connecting both ends to the upper ends of the pair of side frames; an intermediate frame disposed below the horizontal frame and connected at both ends to the side frames; The opening window is provided in a lower central portion of the intermediate frame, 3. A truck comprising: a switching valve having a main body fixed to a lower surface of the intermediate frame.

3. A truck according to claim 2, A freight vehicle characterized in that the torii gate has storage compartments on both sides of the opening window.

4. A truck according to claim 2 or 3, A awning plate having a width wider than that of the intermediate frame is fixed to a lower surface of the intermediate frame, A truck, characterized in that the main body is fixed to the underside of the eaves plate.

5. A truck according to any one of claims 1 to 4, further comprising: A cabin constituting a driver's cab is provided in front of the loading platform, The drive device is a hydraulic pump for supplying pressure oil to the switching valve; an oil tank connected to the hydraulic pump; A truck characterized in that the oil tank is disposed between the torii gate and the cabin.

6. A truck according to any one of claims 1 to 5, A truck, characterized in that the switching valve and the winch are arranged in the opening window.

7. A truck according to any one of claims 1 to 6, A truck, wherein the tilting mechanism is an outrigger that tilts the entire vehicle.

8. A truck according to any one of claims 1 to 6, 11. A truck, comprising: a tilting mechanism that tilts the platform without tilting the entire vehicle;

9. A truck according to any one of claims 1 to 8, A truck characterized in that the opening window is provided with a locking portion for connecting a pulley for hanging the wire of the winch.

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