JPS631654Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tie rod connection structure that connects knuckle arms that rotate both front wheels of a power carrier to the left and right.

Conventionally, in order to rotate both front wheels of a power transport vehicle at the same time, a knuckle arm is attached to the upper end of the kingpin that supports and rotates both front wheels, and these two knuckle arms are connected together with a tie rod, and the front wheels are rotated in the same direction at the same time. However, since this tie rod is installed at the bottom of the front wheel differential case, if you hit an obstacle while driving or go on a bumpy or bumpy road surface, the tie rod will not work properly. The front wheels could not be steered smoothly because the tie rods would bend or break when they came into contact with the road surface.

In this invention, the tie rod is bent upward in a 〓 shape and is configured to bypass the front differential case so that the tie rod does not come into contact with the above-mentioned obstacles or part of the uneven road surface. To provide a connecting structure for a tie rod in a power transport vehicle, which simplifies the structure of the tie rod, prevents the tie rod from being damaged or bent, and allows smooth steering of the vehicle body.

An example of this invention will be explained in detail based on the drawings.
The power transport vehicle 1 consists of a traveling machine body part 2 and a transporting machine body part 3, and the transporting machine body part 3 is connected to the rear part of the traveling machine body part 2.

The traveling fuselage section 2 has a steering wheel 4 at the tip of one side above the base frame 11, a pilot's seat 5 directly behind it, an engine 6 mounted on the other side, and a bonnet 7. Front wheels 8, 8' are attached below the surrounding base frame 11. The front wheels 8, 8' are attached to the base frame 1.
The transmission case 10 is attached to both sides of the front differential case 9 which is fixedly suspended from the front differential case 1, and transmits the power from the engine 6 to the transmission case 10, which is provided integrally with the front differential case 9, to change gears, and further transmits the power to the front differential case 9. The transmission is transmitted to drive the front wheels, thereby rotating both front wheels 8, 8'.

The transport body section 3 has a rear wheel 14 and a rear wheel 15 pivoted on the outside of a support frame 13 which also serves as a chain case 12 and is arranged substantially parallel to the front wheels 8 and 8'. and are connected by a chain stretched in the chain case 12,
A bracket 1 is attached to the rear end of the support frame 13.
6 is fixed and one end of the loading platform 17 is pivotally connected 18, and a hydraulic cylinder (not shown) is attached to the lower end of the loading platform 17.
The loading platform 17 is configured to be pivoted at one end to rotate the loading platform 17 in the vertical direction.

19 is the above-mentioned traveling machine body part 2 and transport machine body part 3
It is a connecting member that swingably connects the horizontal frame 2 and the horizontal frame 2 on which the loading platform 17 is placed on the chain case 12.
1 and an auxiliary frame 22 are horizontally fixed, a cylinder 20 is fixed to the center of both frames 21 and 22, and a cylinder 20 is provided inside the cylinder 20 extending rearward from the rear of the base frame 11 of the traveling aircraft body part 2. Bracket 23
Loosely fit a hollow shaft (not shown) to be fixed to the
The traveling machine body part 2 and the transport machine body part 3 are connected to each other so as to be swingable.

When rotating the rear wheel 14 and the last wheel 15, a rear differential case (not shown) transmits the power of the engine 6 to the transmission case 10 and further rotates the rear wheel 14 via the propeller shaft 24.
Power is transmitted to rotate the rear wheel 14, and at the same time, this driving force is transmitted to a chain stretched in the chain case 12 to rotate the rear wheel 15.

The steering wheel 4 has a column 25 in which a steering shaft (not shown) is installed.
The lower end of the steering shaft is engaged with the gear box 26, and the pitman arm 28 is fixed to the shaft 27 at one end of the engaging gear. The front wheel 8 is attached at a position 30, and its tip end is pivotally connected to one end 31a of a knuckle arm 31 attached to the upper end of a kingpin (not shown) that supports the front wheel 8.

The central portion of this knuckle arm 31 is attached to the upper end of the king pin as described above, and the king pin is rotatably attached to the gear case 32.

The other end 31b of the knuckle arm 31 is one end 33a of the tie rod 33, which is a long rod bent into a square shape.
A knuckle arm 3 is pivotally connected to the front wheel 34 and the other end 33b is attached to the king pin of the other front wheel 8'.
5 with 36 pivots.

As mentioned above, the tie rod 33 has a central portion 33.
c is raised upward, the upper part of the mission case 10 is bypassed, and both ends 33a and 33b are bent horizontally one step lower than the center part 33c, so that when the tie rod 33 is operated, the center part 33c is connected to the mission case 10. 10 so that it does not come into contact with it.

The embodiment of this invention is constructed as described above, and when the steering wheel 4 is rotated clockwise, the pitman arm 28 is also rotated clockwise, pulling the drag link 29 toward the front of the vehicle body and pulling the knuckle arm 31. In order to rotate horizontally clockwise, the front wheel 8 rotates to the right.

At this time, the tie rod 33 pivotally connected to the knuckle arm 31 moves to the left, so the knuckle arm 35 of the opposite front wheel 8' is rotated clockwise, thereby rotating the front wheel 8' to the right.

Conversely, when the steering wheel 4 is rotated counterclockwise, the pitman arm 28 rotates counterclockwise, pushing the drag link 29 toward the rear of the vehicle body. As a result, the nutcle arm 31 rotates counterclockwise to rotate the front wheel 8 counterclockwise (to the left), and at the same time pulls the tie rod 33 to the right, so the front wheel 8' on the opposite side also rotates to the left. Rotate.

In this way, in order to change the running direction of both front wheels 8 and 8', there is a cross-shaped cross section between the nut case 31 and 35 which detours the upper part of the transmission case 10 and rotates the front wheels 8 and 8'. By interposing the tie rod 33, the influence of uneven ground,
Since obstacles are protected by the transmission case 10 and the front differential case 9, there are no obstacles to the operation of the tie rod 33, and the mechanism can be further simplified.

According to this invention, a tie rod 33 configured to bypass the upper part of the transmission case 10 is interposed between the knuckle arms 31 and 35 that rotate the front wheels 8, 8', so that the front wheels 8, 8' can be rotated. The tie rod 33 is not damaged or bent by obstacles on the road surface, increasing its durability.Moreover, the structure of the tie rod 33 is simplified and installation is easy, so the front wheel We were able to create a very simple structure for the mechanism.

[Brief explanation of the drawing]

FIG. 1 is a side view of a six-wheel power carrier. FIG. 2 is a plan view of FIG. 1. FIG. 3 is a perspective view showing the main parts of the present invention. 1: Power carrier, 2: Traveling body, 3: Transport body, 4: Steering wheel, 6: Engine, 8, 8': Front wheels, 9: Front differential case,
10: Mission case, 12: Chain case,
25: Column, 26: Gearbox, 28: Pitman Arm, 29: Drag Link, 31:
Natsukuru arm, 33: Tie rod, 35: Natsukuru arm.

Claims (1)

[Scope of utility model registration request] Knuckle arms 31 and 35 rotate the front wheels 8 and 8' that are pivotally supported on both sides of the front differential case 9.
A power transport vehicle is constructed by interposing a tie rod 33 with a cross-shaped front face between the two, and a transmission case 10 integrally connected to the front differential case 9 below the central bulge of the tie rod 33. Connection structure of tie rods.