JPS581096Y2 - Connection structure of the front part of the loading platform of a wet paddy transport vehicle - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connection structure for the front part of a loading platform in a wet field transport vehicle.

In other words, it is a wet paddy transport vehicle that can carry culms etc. in wet paddy fields, and it can be reliably towed by a single wet paddy wheel while riding on the seat, and it can also be used to transport rice fields in wet paddy fields through parallel links. The sled-shaped cargo platform can be pulled satisfactorily in accordance with the above conditions, and when driving on the road, it can be operated to a connected state that allows for good towing by operating a lever below the seat, and can be suitably carried out. .

Next, the embodiment shown in the drawings will be described.

Figure 1 shows a side view of the entire wet paddy transport vehicle, with a seat 1 installed on the upper rear end and a connecting rod 3 extending in the front and back direction, with a cylindrical metal support whose axis is in the vertical direction at the tip of the connecting rod 3. 4 is fixed by welding, and a vertical cylindrical support shaft 5 is rotatably fitted into this cylindrical support 4, and a support is connected to the lower part of the support shaft 5 below the support 4. The flange 19a at the lower part of the support metal 19 is connected to the upper part of one end of the transmission case 8, and the transmission case 8 is extended obliquely upward from the one end. Configure.

An engine 7 is connected to the side of the tip of the upper slope of the transmission case 8 so as to transmit power, and a wet paddy wheel 6 is mounted on a cantilever type below the support shaft 5 and on the lower side of the slope of the transmission case 8. The wheel 6 is constructed by removably wrapping a girdle 6b around a rubber tire 6a in which each lug plate is inclined in the same direction, and a guard 20 is installed around the wheel 6. At the same time, a fender 21 is installed above the O housing, and a support metal 22 is fixed to the middle lower part of the transmission case 8 in the longitudinal direction with a bolt 23, and the support metal 22 is fitted in the horizontal direction and rotated. The upper end of the L-shaped rod stand 13 is fixed to the freely movable support pin 24, and when the ground contact portion 13a extending laterally at the bottom of the stand 13 is raised upward, it straddles the front of the engine 7. The stand 1 on the base end side of the grounding portion 13a is formed so that it can act as a protector.
A foot pedal body 13b extends in the orthogonal direction from near the bent portion of No.
A tension spring 29 is connected between the pin 2T at the tip of the arm 26 extending from the support pin 24 and the pin 28 of the support metal 22. is the notch 2 of the support metal 22
2a.

A cylindrical metal 3 is attached to the upper part of the support shaft 5 extending above the support body 4.
0 is fitted and fixed, and the supporting rods 31 extend on both sides of the cylinder metal 30.
, 31' (7) At the tip, both end bases of the loop-shaped main handle 9, which is opposite to the engine T side, are connected. The base of the auxiliary handle 100 made of rod is fixed to the tube metal 30, and the rod body 1 on the grip 10a side of the auxiliary handle 10 is fixed.
0b is attached to the handle rod 10c side by means of pin rods 32 and pins 33 so that it can be expanded and contracted freely.

Further, clutch levers 34 and 34' installed on both handles 9 and 10 are interlocked and connected by an interlocking rod 35, and a clutch wire extending from the clutch lever 34 side is inserted into the cylinder of the support shaft 5. The accelerator wire is also inserted into the support shaft 5 and extended.

A support plate 36 is fixed to a portion of the connecting rod 3 in the vicinity of the support body 4, and a support plate 36 is attached to a portion below the ring-shaped plate operation panel 11 extending around the support shaft 5 above the support body 4. 37
, 37% vertically, both sides of the support plate 36 and the support plates 37 , 37
'(7) Parallel links 38 and 38 between the top and bottom respectively'
The lower links 38 and 38' (7
) Arms 39, 39 are formed in the rear part to bend and extend upward, and a tension spring 42 is connected to a pin 40 on one arm 39 and a pin 41 on the side of the connecting rod 3, and the tension force causes the operation panel to move. 11 is pressed upward, and brake wires 44 and 44' extend rearward from end pins 43 and 43 of both arms 39 and 39, respectively.

! , and a compatible rod 31° 31 in the vicinity of the tube metal 30
Both ends of a planar U-shaped support arm 46 are rotatably attached via pins 47 and 47 to protruding rods 45 and 45 fixed to the projecting rods 45 and 45 fixed to the projecting rods 45 and 45. A brake wire 50 is extended from a protruding arm 48 extending from one end of a support arm 46 to an operating lever 49 of the main nozzle 9, and a brake wire 50 is attached to the roller 12 that contacts the upper surface. The brake wire 5 of the Bowden wire set runs from the lever 51 to the protruding arm 48.
2 are extended and connected.

Reference numeral 2 denotes a flat plate loading platform, and a large boat-shaped sled 2a is attached to the lower part of the horizontally central portion of a support frame 53 having a framework structure on which the loading platform 2 is placed, using support pieces 54 and 54. Support shafts 55, 56, 55' and 56' are installed horizontally in the middle portions of both sides of the support frame 53 on the outside, and one end of each is pivotally connected to the front coexistence shafts 55, 55'. Two-piece arm 57.57' (7) Wheel 14 at the tip
, 14' are respectively attached to the shafts of the two brake wires 44.
．． 44' is configured to extend and connect to the wheels 14, 14' in the same manner as in the conventional structure so as to be able to brake the wheels 14, 14'.

When the housing and both wheels 14 and 14' are raised upward to the front side,
The pin 59 to be inserted into the hole 58 of the support frame 53 is inserted into the arm 57.
, 57' so that it can be fixed by being inserted into the side fittings 60, 60' of both wheels 14.1
4' is raised, and below each is the sled 2.
The narrow auxiliary sleds 2b and 2b' on both sides of a are fixed to the support pieces 54' and 54' and are detachable so that they can be installed.

Holes 61 and 61' for the wheels 14 and 14'75 are formed on both sides of the front of the loading platform 2, and couplings 62 and 62' are installed at the rear of the support frame 53 to secure the loading platform 2. A similar loading platform is connected to the rear so that it can be towed.

A support rod 15 is provided upwardly protruding from the front part at the center in the width direction of the loading platform 2, a support rod 16 is provided downward from the rear of the connecting rod 3 at the lower front of the seat 1, and parallel links 17 are provided in the upper and lower sides. , both sides of 17' are supported by 15,1
6 through pins 63, and
A locking device A is interposed between the balancing rods 16 and 15 in a direction crossing the parallel links 17 and 17', and this device A locks the rear end of the long link 64 at the side of the balancing rods 16 and 15. into the rear end pin 63 of the lower link 17', and
A long hole 65 formed at the tip of the upper link 17 is inserted into the front end pin 63 of the upper link 17, one end of the long lever 18 is pivoted to a pin 66 in the center of the link 64, and one end of the operating link 67 is inserted into the front end pin 63 of the upper link 17. The operating link 67 is pivoted on a pin 68 of the lever 18, and a long hole 69 formed at the other end of the operating link 67 is inserted into the front end pin 63 of the upper link 17.

As shown in FIG. 1, when the wet paddy field vehicle is used, the wheels 6 are equipped with girdles 6b for wet paddy fields, and the wheels 14 and 14'H on both sides are fitted into the holes 61 and 61' of the loading platform 2. Raise the pins 59 and 59 to the mounting brackets 60,
Both auxiliary sleds 2b are inserted into the sleds 60', locked, and aligned on both sides of the sled 2a.

2b' is placed below both axles 14, 14'+7) and fixed by support pieces 54, and the stand 13 is a housing in which the tension spring 29 crosses the dead center, and when raised upward, it becomes as shown by the imaginary line in FIG. As a result, the front of the engine 7 is surrounded by the ground contact portion 13a, so that it can be shaped like a protector.

Furthermore, when the lever 18 is rotated forward, the pin 6B moves forward, causing the operating link 67 to move forward, and the tenth
As shown in FIG. 1 and FIG. 11, the front and rear ends of the circumferential holes 65 and 69 are lined up on both sides, and the locking device A is in the unlocked state, and the locking device A is in the unlocked state as shown in FIGS. 1 and 9. Then, the connecting rod 3 side and the loading platform 2 side are in a connected state in which they can move relative to each other in the vertical direction.

Therefore, the operator sitting on seat 1 is the main...
When you hold the handle 9 and drive forward, the engine I is in front of the wheel 6, and the girdle 6b is in good condition.Since it is a single wheel 6, when the main handle 9 is rotated, the support shaft 5
The main handle 9 rotates for good steering and when going backwards, turn the main handle 9 to 18.
Rotate the auxiliary handle 10 by 0 degrees and move the auxiliary handle 10 toward the seat 1 side.
When turned to the state shown in the front part of the figure, the orientation of the girdle 6b also changes, allowing the aircraft to move backward.

In this state, since the locking device A below the seat 1 is released, the pin 63 is connected to the wheel 6 side and the cargo platform 2 side via the parallel links 17 and 17' to the extent that it can slide inside the elongated hole 65.69. can be moved in parallel in the vertical direction to slide on the rice field, and the auxiliary knot 10 can be adjusted to extend or contract by adjusting the alignment of the pin 33 and pin hole 32, and can be adapted to the operating posture of the operator. can.

The running latch can be activated by operating the clutch levers 34 and 34' either from the main handle 9 side or from the auxiliary handle 10 side.

Furthermore, when driving on the road, when the stand 13 is raised as shown in FIG.
9 passes the dead center and the notch 22a of the stand 13 joins, the grounding part 13a and the tip of the rod 13b touch the ground and the wheel 6
In this state, remove the girdle 6b, remove the auxiliary sleds 2b, 2b' on both sides, and pull out the pins 59, 59 and the arms 57, 57'.
When rotated, the arms 57 and 57' move to the support shaft 56°5.
6', in a state where it is supported by being connected to the lower part of the
Both axles 14, 14' protrude below the sled 2a and are in a state where they can touch the ground.

From the state where lock device A is released as described above,
When the lever 18 is rotated approximately 180 degrees rearward around the pin 66 until it hits the pin 63, the actuating link 67 is pulled rearward as the pin 68 moves, and the pin 63 engages with the tip of the elongated hole 69. As shown in FIGS. 14 and 15, the pin 63 engages with the front end of the elongated hole 69 at the rear end of the elongated hole 65, and as shown in FIG. The parallel links 17 and 17' are in a locked state.
is in a fixed connection state where it does not operate.

Therefore, when the stand 13 is raised in the same way as described above and the rubber tires 6a are brought into contact with the ground, it can be set as shown in FIG. By rotating the support shaft 5, the rubber tires 6 can be steered, and when the vehicle is going backwards, by grasping the auxiliary handle 10, the vehicle can be driven backwards in the state shown in FIG.

,. In addition, the main handle 9 and the auxiliary handle 1
0 is facing in any direction in 360 degrees, when the operating lever 49 on the main handle 9 side or the operating lever 51 on the auxiliary handle 10 is operated, the support arm 4
6 can be rotated to push down the roller 12, and the operation panel 1 can be pushed down no matter where the roller 12 is in the 360 degree direction.
1 is pushed down, and both arms 39, 39 are connected to the brake wires 44, 44 by parallel rotation of the parallel links 38, 38.
', both axles 14, 14 are braked and brakes can be applied, and both levers 49, 14 are braked.
510 When any operating state is released, the operating panel 11 is raised by the tensile force of the tension spring 42 and the brake is released.

In this way, the present invention provides a support shaft 5 with a vertical axis on the side of the transmission case 8 which supports a single wet paddy wheel 6, and horizontally attaches the tip of the connecting rod 3 for connecting the loading platform to the support shaft. The transmission case 8 side and the connecting rod 3 side are connected to each other so as to be rotatable in the direction, and the relative angle can be changed freely. Parallel links 17, 17' are connected to a support rod 15 erected from the front part of the 4-bar link, which can swing vertically.
The joint link can be switched between a free swinging state and a swinging prevention state by means of a locking device A that can be unlocked by operating a lever 18, so that it is possible to load shell culms, etc. while riding in a wet rice field while riding on seat 1. Can be conveniently transported.

In particular, the wheels on the transmission case 8 side are made into single wheels, so that the transmission case side and the connecting rod 3 can be rotated freely in the horizontal direction, and the sled-shaped loading platform can be freely moved up and down via a four-bar link to the connecting rod. Since they are connected in a oscillating state, the sled-shaped cargo platform adapts to the height of the ground when traveling in wet fields, and the aircraft direction can be controlled with less operating force than with a twin-wheeled structure, resulting in extremely stable operation.

In addition, the four-bar link that connects the sled-shaped loading platform can be easily fixed in a state of preventing swinging by using the locking device A operated by lever 18, so when traveling on the road, the loading platform can be maintained at the desired height and pulled smoothly. It has characteristics that allow it to be implemented suitably.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a side view of the wet paddy transport vehicle, Fig. 2 is a side view of the vehicle when running on the road, Fig. 3 is a side view of the upper part of the wheels, and Fig. 4 is a side view of the wet paddy transport vehicle. A plan view of the part shown in Figure 3,
Figure 5 is a plan view of the handle part, Figure 6 is a sectional view of the auxiliary handle part, Figure 7 is a side view of the stand part, Figure 8 is its front view, and Figure 9 is a side view of the lower part of the seat. , 1st
Figure 0 shows a part of it, Figure 11 is a plan sectional view of a part of Figure 9, Figure 12 is a side view of the locking device, and Figure 13 is a side view of the locking device.
Fig. 14 is a partial view of the operation, Fig. 15 is a plan sectional view of a part of Fig. 13, Fig. 16 is a plan view of the loading platform side, and Fig. 17 is the lower part of Fig. 16. The top view of the figure is shown. 1... Seat, 3... Connecting rod, 9...
・・・・Main wheel, 6・・・・Wheel, 15, 1
6...Support rod, 17°17'...Parallel link, 18...Lever, A...Lock device.

Claims (1)

[Scope of utility model registration request] A vertical support shaft 5 is provided on the side of the transmission case 8 that supports a single wet field wheel 6, and a connecting rod 3 for connecting the loading platform is attached to the support shaft.
A supporting rod 1 is configured such that the relative angle between the transmission case 8 side and the connecting rod 3 side can be changed freely by connecting the distal ends of the connecting rods 3 so as to be rotatable in the horizontal direction.
6 and a support rod 15 erected from the front part of the sled-shaped loading platform 2 are connected by parallel links 17 and 17' to form a four-bar link that can swing in the vertical direction, and the four-bar link is lever
A connecting structure for the front part of a loading platform in a wet paddy transport vehicle, characterized in that it can be switched between a free swinging state and a swinging prevention state by means of a locking device A that can be unlocked by operating 1B.