JP2010143302A - Bridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bridge with a simple constitution capable of easily loading/unloading a small size movement agricultural machine in a rear baggage room of a general vehicle such as a passenger car by work of one person. <P>SOLUTION: The bridge includes an attitude changing operation unit 31 switching the bridge 1 to an inclination attitude state A that one end of the bridge 1 is engaged with the baggage room 2a of the vehicle 2 and the other end is ground-contacted and an approximately horizontal attitude state D that one end of the bridge 1 is engaged with the baggage room 2a of the vehicle 2 and the other end is lifted up, and capable of retaining the bridge 1 in the inclination attitude state A or the approximately horizontal attitude state D. By the attitude changing operation unit 31, switching from the state that the small size movement agricultural machine 3 is loaded on the bridge 1 in the inclination attitude state A to the approximately horizontal attitude state D or switching from the state that the small size movement agricultural machine 3 is loaded on the bridge 1 in the approximately horizontal attitude state D to the inclination attitude state A can be attained. On a midway part of the bridge 1, wheel-stops 41 for stopping free rotation of traveling wheels 12 of the small size movement agricultural machine 3 in a downslope direction are provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bridge used for loading and unloading a walking-type management machine, which is a small mobile farm machine, in a rear luggage room such as a passenger car having a hatchback type door.

  Conventionally, when loading and unloading construction machines such as excavators and bulldozers, and agricultural machines such as tractors and cultivators onto a truck bed, a pair of ladder bridges (treads) are juxtaposed from the ground to the rear of the truck bed. A slope is formed by holding it on the ladder bridge, and a loading and unloading operation is performed while running a construction machine or an agricultural machine on the ladder bridge at a low speed (see, for example, Patent Document 1).

Further, there is known a structure in which a bridge is foldable so that the bridge can be stored without taking a space in a truck bed in a folded state (see, for example, Patent Document 2).
JP-A-9-118267 (page 2-3, FIG. 1 to FIG. 3) Japanese Patent Application No. 2004-142849 (page 3-5, FIG. 1 to FIG. 3)

  By the way, when loading and unloading a walking-type management machine with a body weight of about 50 kg into the rear cargo compartment of a general vehicle such as a passenger car, it is possible to perform loading and unloading by hand with two persons. In order to load and unload, a hydraulic unloading device or the like must be used, or a miniaturized bridge as shown in Patent Document 1 and Patent Document 2 must be used.

  However, the above-described hydraulic unloading device is expensive, and simply by downsizing the bridge, it is necessary and sufficient work including safety for loading and unloading the walking type management machine by one person. Could not get performance.

An object of the present invention is to solve the above-described problem, and is a bridge for loading and unloading a small mobile agricultural machine into a vehicle luggage compartment, and one end of the bridge is locked to the vehicle cargo compartment. The other end of the bridge is grounded, and the bridge is switched to the substantially horizontal posture state in which one end of the bridge is locked to the cargo compartment of the vehicle and the other end is lifted, and the inclined posture state or the substantially horizontal posture state is set. A posture changing operation tool capable of holding a bridge is provided, and the posture changing operation tool is used to switch from a state where a small mobile farm machine is loaded on the bridge in the inclined posture state to a substantially horizontal posture state, or the substantially horizontal posture. It is possible to switch from a state in which a small mobile agricultural machine is loaded on a bridge in a state to a tilted posture state, and a free rotation of the traveling wheel of the small mobile agricultural machine in the downhill direction is provided in the middle part of the bridge. Stop It is the first feature in that a chock to.
Further, a second feature is that the wheel stopper is provided between a substantially middle portion of the bridge and a locking portion for locking the bridge to the cargo compartment of the vehicle.
Further, a stopper acting surface that stops the free rotation in the downhill direction of the traveling wheel over the gentle slope while forming a surface on which the traveling wheel rides when the small mobile agricultural machine climbs the wheel stopper. The third feature is that it is formed on a steep slope.
Furthermore, a fourth feature is that a wheel removal preventing member is provided on the side of the wheel stopper.

According to the first aspect of the present invention, there is an inclined posture state in which one end of the bridge is locked to the cargo compartment of the vehicle and the other end is grounded, and the other end of the bridge is locked to the cargo compartment of the vehicle. A posture changing operation tool that can be switched to the lifted substantially horizontal posture state and can hold the bridge in the inclined posture state or the substantially horizontal posture state is provided on the bridge in the inclined posture state by the posture changing operation tool. It is possible to switch from a state in which a mobile agricultural machine is loaded to a substantially horizontal posture state, or to switch from a state in which a small mobile agricultural machine is loaded on a bridge in the substantially horizontal posture state to the inclined posture state, and In the middle of the bridge, a wheel stopper that stops the free-wheeling of the traveling wheels of the small mobile farm machine in the downhill direction was provided, so when loading the small mobile farm machine into the luggage compartment of the vehicle alone, it is first small Mobile farming While climbing the bridge in an inclined position, it stops in front of the luggage compartment and stops the rotation of the traveling wheel by the wheel stop, that is, stops the free rotation of the traveling wheel in the downhill direction through the wheel stop. At this time, for example, if the vehicle is a passenger car equipped with a hatchback door, the steering handle of the small mobile agricultural machine is folded so that it can be stored in the luggage compartment, and then one end of the bridge is engaged with the luggage compartment of the passenger car. In a stopped state, the other end (grounding portion side) can be lifted by the posture changing operation tool to bring the bridge into a substantially horizontal posture state. That is, the lifting (operation) load at that time can be reduced to about 1/3 of the weight of the small mobile farm machine. With this configuration, the small mobile farm machine can be operated by one person from the bridge on a passenger car, etc. Can be easily moved into the cargo compartment. On the other hand, when the small mobile farm machine is to be unloaded from the cargo compartment of the vehicle on the road by one person, the small mobile farm machine is moved from the cargo compartment to the bridge in a substantially horizontal posture, while the small mobile agricultural machine is almost removed from the cargo compartment. Stop at the exit position and stop the rotation of the traveling wheel by the wheel stopper, that is, stop the rotation of the traveling wheel in the downhill direction via the wheel stopper, and the steering handle of the small mobile farm machine folded at this time After returning to the maneuverable state, with the one end of the bridge locked in the cargo compartment of the vehicle, the other end (grounding side) is lowered by the posture changing operation tool and the other end of the bridge is grounded. can do. In this case, the lifting (operation) load can be reduced to about 1/3 of the weight of the small mobile farm machine, so that the small mobile farm machine can be easily descended on the road from the bridge by one person. Can be made.
Further, according to the invention of claim 2, the wheel stopper is provided between the substantially middle part of the bridge and the locking part for locking the bridge to the cargo compartment of the vehicle, so that the small mobile farm machine can be used alone. When loading into the luggage compartment of a vehicle during work, after loading a small mobile agricultural machine on the bridge in an inclined posture and stopping rotation of the traveling wheel in the downhill direction via the wheel stopper, one end of the bridge When the other end is lifted by the posture changing operation tool while being locked in the cargo compartment of the vehicle, the lifting (operation) load can be reduced to about 1/3 of the weight of the small mobile agricultural machine, thereby It is possible to easily change the posture of the bridge from the inclined posture state to the substantially horizontal posture state. On the other hand, when the small mobile farm machine is unloaded from the vehicle luggage compartment on the road by one person, first, the small mobile farm machine is moved from the cargo compartment of the vehicle onto the bridge in a substantially horizontal posture, while the walking management machine is moved from the cargo compartment. After stopping at the approximate position and stopping rotation of the traveling wheel by the wheel stopper, i.e., stopping rotation of the traveling wheel in the downhill direction via the wheel stopper, one end of the bridge is engaged with the cargo compartment of the vehicle. When the other end (grounding part side) is lowered with the posture change operation tool in the stopped state, the lifting (operation) load can be reduced to about 1/3 of the weight of the small mobile farm machine, thereby The posture of the bridge can be easily changed from the substantially horizontal posture state to the inclined posture state.
Further, according to the invention of claim 3, the surface on which the traveling wheel rides when the small mobile agricultural machine climbs the wheel stop is formed on a gentle slope, while the traveling wheel that has overcome the gentle slope in the downhill direction. By forming the stopper acting surface for stopping the free rotation on the steep slope, it is possible to smoothly run the traveling wheel of the small mobile farm machine over the wheel stopper.
Furthermore, according to the invention of claim 4, by providing a derailment prevention member on the side of the wheel stop, smooth running and prevention of derailment when the traveling wheel of the small mobile agricultural machine gets over the wheel stop. I can plan.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an inclined posture state A in which one end of a loading / unloading bridge 1 for a walking-type management machine, which is a small mobile agricultural machine, is locked to a rear luggage compartment 2a such as a passenger car (vehicle) 2 and the other end is grounded. FIG. 3 is a side view of the walking type management machine 3 that is climbing or descending while using the loading / unloading bridge 1. FIG. 2 is a side view (a) showing a state in which the loading / unloading bridge 1 is folded in the middle to form a simple storage posture B, and the loading / unloading bridge 1 is unfolded in a straight line when viewed from the side. It is a side view (b) when it is set as posture C. 3 (a) and 3 (b) show two types of loading and unloading bridges 1 and 1 'having different lateral widths W1 and W2 (W1 <W2) corresponding to the tread of the walking-type management machine 3 (in a side view in a straight line shape). It is a top view when it expand | deploys.

  The loading / unloading bridge 1 includes two rail bodies 4 and 4 made of aluminum alloy having a groove-shaped cross section (see FIG. 13), and the middle portion (intermediate portion) of the two rail bodies 4 and 4 is hinged. 5 and connecting both ends of the two rail bodies 4 and 4 connected via the hinge 5 using connecting members 6 and 6 made of round bars. A loading and unloading bridge 1 is formed which supports two rail bodies 4 and 4 in parallel. That is, the loading / unloading bridge 1 formed in this manner can be easily divided into a storage posture B folded from the middle part of the two rail bodies 4 and 4 and a loading / unloading posture C developed in a straight line in a side view. The posture can be changed.

  More specifically, the connecting members 6 and 6 formed of round bars for connecting both ends of the two rail bodies 4 and 4 described above are holes in which both ends are formed in the left and right ribs 4a and 4a. Two types having different widths W1 and W2 (W1 <W2) between the two rail bodies 4 and 4 and the connecting members 6 and 6 as shown in FIGS. 3A and 3B. The horizontal widths W1 and W2 can be changed by inserting / removing snap pins 7 to / from pin holes (not shown) provided in the connecting members 6 and 6 in order to form the unloading bridges 1 and 1 '. That is, as shown in FIGS. 1 and 4, the lateral width of the two rail bodies 4, 4 can be easily adjusted according to the tread of the walking type management machine 3 that uses the loading / unloading bridge 1 to run uphill or downhill. It can be changed to

  The walking management machine 3 described above includes a substantially U-shaped mission case 11 in a side view, which is also used as a machine body frame, as shown in FIGS. 1 and 4. A traveling wheel 12 that is a traveling device is pivotally supported on the left and right sides of the rear end portion of the mission case 11, and a tilling shaft 14 of a rotary tiller (front rotary) 13 is pivoted on the front end portion of the mission case 11. I support. An engine E, which is a prime mover, is mounted on the upper part of the mission case 11, that is, at the rear and upper position of the rotary tiller 13, and the engine E transmits the mission via a main clutch (not shown) including a tension clutch. Power is input to the speed change mechanism in the case 11.

  A pair of left and right handle brackets 15, 15 projecting obliquely upward are screwed to the rear part of the mission case 11, and the rear end parts of both handle brackets 15, 15 are also used as rear handles of the fuselage. The horizontal pipe 16 is integrally connected. Furthermore, the base end portion of the steering handle 17 formed in a substantially U shape in a plan view is attached to the left and right end portions of the horizontal pipe 16 using a bolt 18 with a knob, and the bolt 18 with a knob is tightened. Thus, when the steering handle 17 is fixed to the horizontal pipe 16 and the knob-equipped bolt 18 is loosened, the steering handle 17 can be rotated back and forth using the knob-equipped bolt 18 as a pivot.

  5 (a) and 5 (b) show the configuration of the locking portion F that is one end of the two rail bodies 4 and 4 that constitute the unloading bridge 1 and the grounding portion G that is the other end. The main part sectional side view and main part top view which are shown, Comprising: The latching | locking part F latched to the rear luggage compartment 2a of the passenger cars 2 etc. is formed in the front-end | tip part in the substantially L shape by the side view for drop-off prevention An anti-slip rubber plate 22 is attached to a surface (lower surface) of the locking member 21 that contacts the rear cargo chamber 2a. And the base part of the said locking member 21 and the cover plate 23 which covers the upper part of the connection member 6 which connects the locking part F side of the two rail bodies 4 and 4 are made into the bottom part 4b of the said rail body 4. Are fastened (screwed) together using screws 24 and nuts 25.

  In addition, the locking member 21 described above is bent and formed in a forward and downward inclination (see FIG. 5) from the end of the rail body 4 in a state of being fastened to the bottom portion 4b of the rail body 4, Walking from above the bridge 1 in a substantially horizontal posture state D (see FIG. 6) in which one end of the bridge, which will be described in detail later, is locked to the rear luggage compartment 2a such as the passenger car 2 and the other end is lifted by the forward and downward inclination. Movement to the rear cargo room 2a of the type management machine 3 or movement of the walking type management machine 3 from the rear cargo room 2a onto the bridge 1 can be performed smoothly. Further, the cover plate 23 is bent and formed into a gentle mountain shape when viewed from the side, and the traveling wheel 12 of the walking type management machine 3 does not ride directly on the connecting member 6 due to this mountain shape, so that the walking type management is concerned. The machine 3 can move smoothly (uphill and downhill).

  On the other hand, the grounding portion G which is the other end with respect to the locking portions F of the two rail bodies 4 and 4 constituting the unloading bridge 1 is a plate-shaped grounding member 26 formed in a substantially L shape in side view. A base plate of the ground member 26 and a cover plate 23 covering the upper side of the connecting member 6 that connects the two rail bodies 4 and 4 to the grounding portion G side. The bolts 27 and the nuts 28 are used to fasten (screw) together. The grounding member 26 is bent and formed in a rearwardly rising inclination (see FIG. 5) from the end of the rail body 4 in a state of being fastened to the bottom 4b of the rail body 4, Inclined posture state A (see FIG. 1) in which one end of the bridge 1 is locked to the rear luggage compartment 2a of the passenger car 2 or the like and the other end is grounded, is one step looser than the inclination of the bridge 1. Therefore, the walking type management machine 3 can be particularly smoothly mounted on the bridge 1. In this embodiment, the inclination angle of the bridge 1 in the inclined posture state A is configured to be about 30 °.

  In addition, the connecting member 6 that connects the two rail bodies 4 and 4 constituting the unloading bridge 1 to the grounding portion G side is connected to one end of the bridge 1 in the unloading posture C by the rear luggage compartment 2a of the passenger car 2 or the like. In the inclined posture state A (see FIG. 1) with the other end grounded and the other end in a state in which one end of the bridge 1 in the same loading and unloading posture C is locked to the rear luggage compartment 2a of the passenger car 2 or the like. A posture changing operation tool 31 that can be switched to a substantially horizontal posture state D (see FIG. 6) is provided.

  The posture changing operation tool 31 includes a handle 32 as a gripping tool rotatably supported by a connecting member 6 that connects the grounding part G side of the two rail bodies 4 and 4 constituting the unloading bridge 1, and a posture. As shown in FIG. 3, the handle 32 and the stand 33 are formed by round pipes 32a and 33b which are both bent into a substantially U shape, and open ends of the round pipes 32a and 33b. And a pair of left and right bosses 32b, 32b, 33b, 33b that are fixed to each other to form a base end portion, and the pair of left and right bosses 32b, 32b, 33b, 33b are supported by a connecting member 6 that is a round bar. .

  Further, the handle 32 and the stand 33 are formed so that the lateral width of the handle 32 is narrower than that of the stand 33 and the length of the handle 32 with the connecting member 6 as a base point is shorter than the length of the stand 33. When not used as a posture changing operation tool 31 to be described in detail later, for example, as shown in FIG. 2 (b), in the state where the loading / unloading bridge 1 is folded from the middle portion to form a simple storage posture B, the handle 32 and the stand 33 is configured so that it can be accommodated in a simple manner without being superposed on the two rail bodies 4 and 4 in plan view. Further, at this time, consideration is given so that the tip end portion (grounding portion) of the stand 33 does not protrude from the hinge 5 side, which is a connecting portion of the two rail bodies 4 and 4.

  The length of the stand 33 is formed so as to be substantially the same as the height of the rear luggage compartment (bumper 2b) 2a of the passenger car 2 or the like. For example, as shown in FIG. In G, a grounding pipe 33a ′ that can be loosely inserted is provided in a pipe 33a that forms the base end side of the stand 33, and a plurality of pin holes H3... Drilled in the grounding pipe 33a ′ and the stand 33 are provided. The length of the stand 33, that is, the height of the stand 33 in the standing posture (stand posture) is determined by inserting / removing the snap pin 35 into / from the pin hole H4 formed in the pipe 33a forming the base end side of the rear portion of the passenger car 2 or the like. You may comprise so that it can adjust suitably according to the height of the luggage compartment 2a.

  Moreover, when the loading / unloading bridge 1 described above removes the snap pins 7... That integrally connect the two rail bodies 4 and 4 and the connecting members 6 and 6 that connect both ends thereof. As shown in FIG. 8, the two rail bodies 4, 4, the connecting members 6, 6, the handle 32, and the stand 33, which are main components, can be easily disassembled. It can be stored in and is easy to carry.

  Next, when the walking type management machine 3 is loaded into the rear cargo room 2a of the passenger car 2 etc. by one person using the loading / unloading bridge 1 described above, the walking type management machine 3 is similarly loaded by one person with the passenger car 2 etc. An outline of the work procedure in the case of lowering from the chamber 2a onto the road will be described in time series.

  9 to 11 show work procedures when loading the walking type management machine 3 into the rear luggage compartment 2a such as the passenger car 2 by one person using the unloading bridge 1, and the procedure (a), (B) is a preparatory work. First, in step (a), the unloading bridge 1 that is folded from the middle part and is in a simple storage posture B is unfolded in a straight line in a side view and is loaded and unloaded C (See FIG. 2).

  Next, in step (b), the locking portion F, which is one end of the loading / unloading bridge 1 in the loading / unloading posture C, is locked to the rear luggage compartment 2a such as the passenger car 2 and the like, The grounding part G as an end is grounded and loaded, and the bridge 1 is set to the inclined posture state A. At this time, the handle 32 and the stand 33 which are the posture changing operation tools 31 of the loading / unloading bridge 1 are rotated to the lower position of the loading / unloading bridge 1. Thereafter, the left and right traveling wheels 12 of the walking-type management machine 3 are aligned with the two rail bodies 4 and 4 supported in parallel constituting the unloading bridge 1.

  Next, in step (c), the operator holds the steering handle 17 of the walking type management machine 3, loads the left and right traveling wheels 12 and aligns them with the two rail bodies 4 and 4 of the bridge 1 while walking. The mold management machine 3 is climbed at a low speed. In this case, the climbing at a low speed may be performed by the operator pushing up the walking type management machine 3 by hand or driving the walking type management machine 3 while driving the engine E.

  Next, in step (d), the left and right traveling wheels 12 of the walking type management machine 3 climbing on the unloading bridge 1 connect the middle portions (intermediate portions) of the two rail bodies 4 and 4 in a foldable manner. When climbing over the hinge 5 and further over the wheel stopper 41 formed by screwing between the hinge 5 and the locking part F, the climbing of the walking type management machine 3 is stopped.

  More specifically, when the left and right traveling wheels 12 of the walking-type management machine 3 stop rotating in the downhill direction by the wheel stopper 41, a rotary tillage device (front rotary) 13 provided on the front side of the walking-type management machine 3 is described. The wheel stopper 41 (see FIGS. 1, 2, 3, and 6) is installed (screwed) so that the door is positioned on the locking portion F of the loading / unloading bridge 1, that is, on the plate-shaped locking member 21. Thus, it is possible to prevent the tilling claw 13a of the rotary tiller 13 from coming into direct contact with the rear bumper 2b of the passenger car 2 or the like.

  12 (a) and 12 (b) are an enlarged side sectional view and an enlarged plan view of the wheel stopper 41 provided on the two rail bodies 4 and 4 (loading and unloading bridge 1) in the above-described inclined posture state A. The wheel stopper 41 forms the surface on which the left and right traveling wheels 12 ride on the gentle slope 42a in a side view when the walking type management machine 3 is loaded and unloaded and climbs the bridge 1, while the left and right traveling wheels 12 A bending plate 42 having a stopper acting surface that stops rotation in the downhill direction formed on a steep slope 42b, and side plates 43, 43 that stand integrally on both sides of the bending plate 42. , 43 from the gentle slope 42a and the height h2 from the steep slope 42b are made substantially the same as the height h3 of the left and right ribs 4a, 4a of the rail body 4, so that the walking type management machine 3 Left and right running Wheels 12 thereby achieving a smooth riding O and derailing prevention when overcoming the chock 41. In this embodiment, the side plates 43 and 43 are integrally erected on both sides of the bending plate 42 constituting the wheel stopper 41, but the side plate 43 is erected only on one side of the bending plate 42. In this case, the side plate 43 is provided at a symmetrical position in a state where the wheel stoppers 41 and 41 are installed (screwed) on the two rail bodies 4 and 4 supported in parallel. If this is done, it is possible to obtain the effect of preventing wheel loss.

  In step (e), as shown in the drawing, in the case of a passenger car 2 having a hatchback type rear door 2b, the steering handle 17 of the walking type management machine 3 is folded and stored (loaded) in the rear luggage compartment 2a. Make it possible.

  Next, in step (f), the handle 32 (posture changing operation tool 31) provided on the ground contact portion G side of the two rail bodies 4 and 4 constituting the unloading bridge 1 is pulled up as shown in the figure. At this time, since the walking type management machine 3 is located on the side of the engaging portion F of the two rail bodies 4 and 4 that are the lever fulcrums, the lifting (operation) load is about 1 of the weight of the walking type management machine 3. / 3 can be reduced. Further, since the grip portion K (see FIGS. 3 and 4) of the handle 32 is separated from the connecting member 6 that supports the two rail bodies 4 and 4, the operator holds the grip portion K of the handle 32. When holding and lifting the grounding end (grounding part G) side of the unloading bridge 1 in the inclined posture state A, the handle 32 rotates around the connecting member 6 and the position of the gripping part K inevitably increases. The operator can load and unload the bridge 1 in a comfortable posture without raising his / her waist. Note that the connecting member 6 can also be used as a gripping tool without providing the handle 32 as in this embodiment (see FIG. 18).

  In the step (g), when the handle 32 is further pulled up from the state of the step (f), the stand 33 that rotates around the connecting member 6 gradually rises accordingly, and this stand 33 is unloaded. When the bridge 1 is in a substantially horizontal posture state D, a standing posture (stand posture) automatically, that is, a front view and a side view showing the base end portion of the posture changing operation tool 31 shown in FIGS. As shown in the figure, the base of the stand 33 comes into contact with the short side 26a of the grounding member 26 of the unloading bridge 1 (two rail bodies 4 and 4) so as to be opened rearward at an angle of α °. Because it is considered, it is excellent in workability.

  Further, a lock means 46 is provided to hold the stand 33 automatically in the standing posture in the procedure (g) in the standing posture, and the locking means 46 is operated in the procedure (h). This locking means 46 has a pin 47 projecting from the short side 26a of the grounding member 26 forming the grounding part G of the unloading bridge 1 (two rail bodies 4 and 4), and a double lock at the tip thereof. An arrow M shown in FIG. 13 (a) is composed of a pivot piece 49 having a substantially right isosceles triangle in front view, which is moderately restricted by the nuts 48, 48, with the apex corner of the pivot piece 49 as the center. The stand 33 is configured to be held in an upright posture by rotating in the direction and contacting the low-angle portion 49 a of the rotating piece 49 with the bottom portion 4 b of the rail body 4.

  In order to release the locking means 46 described above, the rotating piece 49 is rotated in the direction of the arrow M 'as shown in FIG. 14A, and the other low angle portion 49b of the rotating piece 49 and the rail are rotated. What is necessary is just to contact | abut the rib 4a of the left-right one side of the body 4, and, thereby, the stand 33 can be rock | fluctuated freely in the L arrow direction (front-back direction) shown to Fig.14 (a).

  In step (i), the walking type management machine 3 is pushed by hand and stored (loaded) in the rear luggage compartment 2a.

  Next, in step (j), the stand 33 of the loading / unloading bridge 1 in the substantially horizontal posture state D is released, that is, the locking means 46 is released, and the loading / unloading bridge 1 is unfolded in a straight line in a side view. After the loading / unloading posture C is set, the loading / unloading bridge 1 is folded from the middle portion to form a simple storage posture B.

  Finally, in the procedure (k), the unloading bridge 1 in the storage posture B is stored in the rear cargo room 2a, and the loading operation of the walking type management machine 3 is completed.

  FIGS. 15 to 17 show work procedures when the walking type management machine 3 is unloaded from the rear luggage compartment 2a such as the passenger car 2 on the road by using the unloading bridge 1 in the first place. In the procedure (a), a walking-type management machine 3 and a loading / unloading bridge 1 in a simple storage posture B folded from the middle are loaded in a rear luggage compartment 2a of the passenger car 2 or the like.

  Then, the procedure (b) is a preparatory work, and the operator can unfold the loading / unloading bridge 1 that is folded from the middle part and is in a simple storage posture B in a straight line in a side view, (See FIG. 2).

  Next, in step (c), the locking portion F of the unloading bridge 1 in the unloading posture C is locked to the rear cargo chamber 2a of the passenger car 2 or the like, while the other end of the unloading bridge 1, that is, the unloading bridge. 1 is lifted up, and when the loading / unloading bridge 1 is in a substantially horizontal posture state D, the stand 33 is brought into a standing posture, and the standing posture of the stand 33 is locked by a locking means 46 shown in FIG. Hold it through.

  In step (d), the walking-type management machine 3 is pushed by hand to be loaded and unloaded from the rear cargo compartment 2a and moved onto the bridge 1, and the left and right traveling wheels 12 of the walking-type management machine 3 are moved to the two rail bodies 4. , 4 is stopped at the point of contact with the wheel stopper 41 (see FIG. 2).

  Next, in step (e), the stand 33 is held in an upright position while holding the handle 32 (posture changing operation tool 31) provided on the ground contact portion G side of the two rail bodies 4, 4 constituting the unloading bridge 1. The lock means 46 held is released as shown in FIG.

  Next, in the step (f), the handle 32 (posture changing operation tool 31) provided on the ground contact portion G side of the two rail bodies 4 and 4 constituting the unloading bridge 1 is held, and the ground contact portion G side is moved. Gradually lower as shown. At this time, the stand 33 also loads and unloads and turns (falls down) in the downward direction of the bridge 1. Further, since the left and right traveling wheels 12 of the walking type management machine 3 are in contact with the wheel stopper 41, the walking type management machine 3 does not carelessly load and drop down on the bridge 1.

  In step (g), the grounding part G side of the unloading bridge 1 is further lowered, the grounding part G is grounded and unloaded, and the bridge 1 is brought into the inclined posture state A. After the loading / unloading bridge 1 is in the inclined posture state A in this way, the handle 32 that is the posture changing operation tool 31 is also loaded / unloaded and tilted to the lower side of the bridge 1.

  Next, in step (h), the steering handle 17 of the walking-type management machine 3 that has been folded is returned to its original position so that it can be steered as illustrated.

  Next, in procedure (i), the operator holds the steering handle 17 of the walking type management machine 3 and gets over the wheel stopper 41 (see FIGS. 1, 2, 3, and 6), and then the left and right traveling wheels. While walking and unloading 12 and aligning with the two rail bodies 4 and 4 of the bridge 1, the walking type management machine 3 is lowered at a low speed. The descending slope at this low speed may be performed while the operator supports the walking type management machine 3 by hand (the handle 17), or the walking type management machine 3 may be driven while the engine E is driven. .

  Then, the procedure (j) is a state in which the walking type management machine 3 is lowered on the road, and finally, in the procedure (k), the unloading bridge 1 in the inclined posture state A is connected to the rear luggage room 2a of the passenger car 2 or the like. The loading / unloading bridge 1 in the loading / unloading posture C which is unfolded from the side and unfolded in a straight line when viewed from the side is folded from the middle portion to complete a simple storage posture B.

  According to the bridge 1 described above (loading and unloading), an inclined posture state A in which one end of the bridge 1 is locked to the luggage compartment 2a of the vehicle 2 and the other end is grounded, and one end of the bridge 1 is also connected to the vehicle 2. Provided with a posture changing operation tool 31 that can be switched to a substantially horizontal posture state D that is locked to the cargo compartment 2a and lifted at the other end, and that can hold the bridge 1 in the inclined posture state A or the substantially horizontal posture state D; By the posture changing operation tool 31, switching from the state where the small mobile farm machine 3 is loaded on the bridge 1 in the inclined posture state A to the substantially horizontal posture state D or on the bridge 1 in the substantially horizontal posture state D It is possible to switch from the state in which the small mobile agricultural machine 3 is loaded to the inclined posture state A, and free rotation of the traveling wheels 12 of the small mobile agricultural machine 3 in the downhill direction is performed in the middle of the bridge. Wheel stopper 4 to stop When the small mobile farm machine 3 is loaded into the luggage compartment 2a of the vehicle 2 by one person, the small mobile farm machine 3 is first climbed up the bridge 1 in the inclined posture state A before the luggage compartment 2a. Stop and stop the traveling wheel 12 by the wheel stopper 41, that is, stop the free rotation of the traveling wheel 12 in the downhill direction through the wheel stopper 41. At this time, for example, the vehicle 2 is a hatchback type In the case of a passenger car equipped with a door 2b, after the steering handle 17 of the small mobile farm machine 3 is folded so that it can be stored in the luggage compartment 2a, one end of the bridge 1 is locked in the luggage compartment 2a of the passenger car. The bridge 1 can be brought into a substantially horizontal posture state D by lifting the end (the ground contact portion G side) with the posture changing operation tool 31. That is, the lifting (operation) load at that time can be reduced to about 1/3 of the weight of the small mobile agricultural machine 3. With this configuration, the small mobile agricultural machine 3 can be operated on the bridge 1 by one person. Can be easily moved into the luggage compartment 2a of a passenger car or the like. On the other hand, when the small mobile agricultural machine 3 is moved down from the cargo compartment 2a of the vehicle 2 onto the road by one person, the small mobile agricultural machine 3 is first moved from the cargo compartment 2a of the vehicle 2 onto the bridge 1 in the substantially horizontal posture state D. The small mobile agricultural machine 3 stops at a position substantially out of the luggage compartment 2a and stops the traveling wheel 12 by the wheel stopper 41, that is, stops the rotation of the traveling wheel 12 in the downhill direction via the wheel stopper 41. After the steering handle 17 of the small mobile farm machine 3 folded at this time is returned to the steerable state, the other end (grounding side) is fixed with one end of the bridge 1 locked to the luggage compartment 2a of the vehicle 2. An inclined posture state A in which the other end of the bridge is grounded by being lowered by the posture changing operation tool can be obtained. Further, the lifting (operation) load in this case can be reduced to about 1/3 of the weight of the small mobile farm machine 3, thereby making it easy to move the small mobile farm machine 3 from the bridge 1 to the road by one person. You can make it downhill.

  And by providing the wheel stopper 41 between the substantially middle part of the bridge 1 and the locking part F for locking the bridge 1 to the cargo compartment 2a of the vehicle 2, the small mobile farm machine 3 can be operated by one person. When loading into the cargo compartment 2a of the vehicle 2, the small mobile agricultural machine 3 is loaded on the bridge 1 in the inclined posture state A, and the rotation of the traveling wheel 12 in the downhill direction is stopped via the wheel stopper 41. Thereafter, when one end of the bridge 1 is locked to the luggage compartment 2 a of the vehicle 2 and the other end is lifted by the posture changing operation tool 31, the lift (operation) load is about 1/3 of the weight of the small mobile farm machine 3. Therefore, it is possible to easily change the posture of the bridge 1 from the inclined posture state A to the substantially horizontal posture state D. On the other hand, when the small mobile agricultural machine 3 is moved down from the cargo compartment 2a of the vehicle 2 onto the road by one person, the small mobile agricultural machine 3 is first moved from the cargo compartment 2a of the vehicle 2 onto the bridge 1 in the substantially horizontal posture state D. The walking-type management machine 3 stops at a position substantially out of the luggage compartment 2a and stops the traveling wheel 12 by the wheel stopper 41, that is, rotates the traveling wheel 12 in the downhill direction via the wheel stopper 41. After stopping, when one end of the bridge 1 is locked to the cargo compartment 2a of the vehicle 2 and the other end (the grounding portion G side) is lowered by the attitude changing operation tool 31, the load for lowering (operation) is The weight of the small mobile agricultural machine can be reduced to about 1/3 of the weight, whereby the posture of the bridge 1 can be easily changed from the substantially horizontal posture state A to the inclined posture state D.

  A surface on which the traveling wheel 12 rides when the small mobile agricultural machine 3 climbs the wheel stopper 41 is formed on the gentle slope 42a, and the traveling wheel 12 that has passed over the gentle slope 42a is free to rotate in the downhill direction. By forming the stopper acting surface to be stopped on the steep slope 42b, the traveling wheel 12 of the small mobile agricultural machine 3 can be smoothly climbed over the wheel stopper 41. Furthermore, by providing the anti-derailing member 43 on the side of the wheel stopper 41, smooth running and prevention of de-wheeling when the traveling wheel 12 of the small mobile agricultural machine 3 gets over the wheel stopper 41 can be achieved.

Side view of a walking-type management machine that is climbing up or down a loading bridge. (A), (b) The side view which shows the unloading attitude | position of the unloading bridge, and a storage attitude | position. (A), (b) The top view which shows the unloading bridge from which width differs. The top view of the walk type management machine which is going up and down the loading / unloading bridge. (A), (b) The sectional side view and top view of the latching | locking part of an unloading bridge and a grounding part. The side view which shows the walk type management machine on the loading / unloading bridge in a substantially horizontal posture state. The side view which shows the height adjustment method of a stand. The schematic exploded view of the components which comprise a loading / unloading bridge. (A)-(d) The schematic diagram which shows the procedure of the loading operation | work using an unloading bridge. (E)-(h) The schematic diagram which shows the procedure of the loading operation | work using an unloading bridge. (I)-(k) The schematic diagram which shows the procedure of the loading operation | work using an unloading bridge. (A), (b) Enlarged side sectional view and enlarged plan view of wheel stopper (A), (b) The front view and side view which show the base end part of a posture change operation tool. (A), (b) The front view and side view which show the cancellation | release method of a locking means. (A)-(d) The schematic diagram which shows the procedure of the unloading operation | work using an unloading bridge. (E)-(h) The schematic diagram which shows the procedure of the unloading operation | work using an unloading bridge. (I)-(k) The schematic diagram which shows the procedure of the unloading operation | work using an unloading bridge. (A), (b) The top view which shows the state which shared the connection member as a holding tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bridge 2 Vehicle 2a Luggage room 3 Small mobile agricultural machine 12 Traveling wheel 31 Posture change operation tool 41 Wheel stop 42a Slow slope 42b Steep slope 43 Derailment prevention member A Inclined posture state D Substantially horizontal posture state F Locking part

Claims (4)

  A bridge (1) for loading and unloading a small mobile agricultural machine (3) into a cargo compartment (2a) of a vehicle (2), and one end of the bridge (1) is placed in the cargo compartment (2a) of the vehicle (2) An inclined posture state (A) in which the other end is grounded, and a substantially horizontal posture state in which one end of the bridge (1) is similarly locked in the luggage compartment (2a) of the vehicle (2) and the other end is lifted. (D) and a posture changing operation tool (31) capable of holding the bridge (1) in the tilted posture state (A) or the substantially horizontal posture state (D) is provided, and the posture changing operation tool (31) Switching from a state in which a small mobile agricultural machine (3) is stacked on the bridge (1) in the inclined posture state (A) to the substantially horizontal posture state (D), or in the substantially horizontal posture state (D) Switching from a state where a small mobile farm machine (3) is loaded onto the bridge (1) to an inclined posture state (A) The wheel stopper (41) for stopping the free rotation of the traveling wheel (12) of the small mobile agricultural machine (3) in the downhill direction is provided in the middle of the bridge (1). A bridge characterized by.   The wheel stopper (41) is provided between a substantially middle portion of the bridge (1) and a locking portion (F) for locking the bridge (1) to the cargo compartment (2a) of the vehicle (2). Item 14. The bridge according to item 1.   When the small mobile agricultural machine (3) climbs the wheel stopper (41), the surface on which the traveling wheel (12) rides is formed on a gentle slope (42a), while the traveling wheel (12 The bridge according to claim 1 or 2, wherein a stopper acting surface for stopping free rotation in a downhill direction is formed on a steep slope (42b).   The bridge according to any one of claims 1 to 3, wherein a derailment prevention member (43) is provided on a side of the wheel stop (41).

Images