JPS626926Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a power steering system for a powered vehicle, such as a truck, which can be used by driving with power and having work equipment such as a front loader or front lift attached to the front of the vehicle. be.

When installing work equipment such as a front loader or front lift to the front of the chassis, a reinforcing member is bridged between the mounting frames attached to the front and rear of the chassis, respectively, and the front and rear mounting frames are attached. With increased rigidity, the base of the work equipment is attached to these mounting frames.

However, in conventional power vehicles of the same type, the power steering unit that rotates the pitman arm for turning the front wheels is mounted on the chassis and positioned on one side of the radiator in the left-right direction. The above-mentioned reinforcing member comes very close to the power steering unit, which tends to protrude outward, and becomes a hindrance to inspecting the operating cylinder and gear portion of the power steering unit.

In order to avoid the inconvenience caused by such close proximity, it is necessary to take measures such as widening the lateral width of the chassis, and power vehicles equipped with power steering devices in this way tend to have particularly large lateral widths. Ta.

Therefore, in this invention, the radiator is attached to the front axle bracket so that the heat dissipation surface roughly coincides with the left and right direction of the front axle bracket, and the power steering unit is placed close to the radiator and made horizontally long, and within the left and right width of the radiator. The power steering unit is configured to be attached to the front axle bracket so that most of its parts fit into the front axle bracket, and a sufficient gap between the power steering unit and the mounting reinforcing member for the work equipment can be maintained without increasing the left and right width of the chassis. It has been devised.

To explain one embodiment, the front axle 12 is shown in FIG. 1 as a longitudinal side view of the main part of the power vehicle, and as shown in FIG.
A radiator 2 is mounted on the upper part of a front axle bracket 3 which is pivotally supported by a center pin 13 so that its heat radiation surfaces 2a, 2a are approximately aligned with the left and right direction of the front axle bracket 3.

Then, the power steering unit 16, which has a Pitman arm 15 fixedly attached to the rotating shaft 14 and protruding downward, is moved close to the front of the radiator 2 so that the cylinder core of the cylinder case 17 is aligned with the front axle as shown in FIG. Attach it to the front axle bracket 3 with bolts 18 in a horizontally elongated manner so as to roughly match the left and right width direction of the bracket 3, and position it so that most of its parts fit within the left and right width of the radiator 2 in this installed state. I'm letting you do it.

And the illustrated example power steering unit 1
6 attaches the steering gear case 1 to the left side of the cylinder case 17, and attaches the outer end portion of the drive shaft 4 for driving the hydraulic mechanism built in the cylinder case 17 to rotate the rotation shaft 14 to the cylinder case. Steering gear case 1 from the outside of 17
Peeking inside, attach the mounting seat 6a of the chain gear case 6 to the mounting seat 1a at the left end of the steering gear case 1, and attach the chain gear case 6 to the steering gear case 1 with bolts 10.
Connect the bevel shaft 8 located close to the outside left side of the radiator 2 to the change gear case 6.
A bevel gear 5 fitted to a drive shaft 4 and a bevel gear 7 fitted to a bevel shaft 8 are meshed with each other. A steering shaft attached to a steering handle (not shown) and a drive shaft 11 connected to the bevel shaft 8 are connected to each other via an intermediate shaft (not shown).

Further, drag rods 19, 19 are attached to the rotating tip of the pitman arm 15, and the left and right front wheels can be turned around the king pin by a knuckle arm (not shown) connected to the drag rods 19, 19. ing.

Therefore, when a steering handle (not shown) is turned, the drive shaft 4 is rotated by the bevel gears 5 and 7 via the bevel shaft 8, which drives the hydraulic mechanism in the cylinder case 17 and rotates. The Pittman arm 15 rotates together with the moving shaft 14 to turn the front wheels to a desired angle.

In the power steering device of this invention, as described above, the radiator 2 is attached to the front axle bracket 3 so that the heat dissipation surfaces 2a, 2a of the radiator 2 are approximately aligned in the left-right direction of the front axle bracket 3, and the power steering unit 16 is attached to the front axle bracket 3. , close to radiator 2 and make it horizontally long.
Furthermore, since the power steering unit 16 is attached to the front axle bracket 3 so that most of it fits within the left-right width of the radiator 2, most of the power steering unit 16 does not protrude outward from the left-right direction of the radiator 2. Therefore, it is possible to secure a sufficient clearance in the left and right direction between the aforementioned power steering unit 16 and the reinforcing member of the mounting frame mentioned above for mounting work equipment such as a front loader on the front axle bracket 3. This eliminates inconvenience when inspecting the hydraulic mechanism in the cylinder case 17, which is a component of the power steering unit 16, and also widens the left and right width of the front axle bracket 3 in order to secure the above-mentioned left and right clearance. This inventive device can eliminate the disadvantages of having to do so.

Furthermore, since the power steering unit 16 is disposed in a horizontally long manner close to the radiator 2, the length of the front axle bracket 3 in the longitudinal direction can be shortened, and the power steering unit 16 is located close to the front axle bracket 3.
Since the power vehicle is disposed near the center in the left-right direction, the balance of the power vehicle in the left-right direction is also improved.

[Brief explanation of drawings]

The drawings show one embodiment of this invention; FIG. 1 is a vertical sectional side view of the main part, and FIG. 2 is a longitudinal sectional front view of the same main part. Code explanation, 1...Steering gear case, 1
a, 6a...Mounting seat, 2...Radiator, 2a...
...heat dissipation surface, 3...front axle bracket,
4... Drive shaft, 5, 7... Bevel gear, 6... Chain gear case, 8... Bevel shaft, 1
0, 18... Bolt, 11... Drive shaft, 12... Front axle, 13... Center pin, 14... Rotating shaft, 15... Pitman arm, 16... Power steering unit, 17
...Cylinder case, 19...Drag rod.

Claims (1)

[Scope of utility model registration request] A radiator is installed on the top of the front axle bracket that supports the front axle, with its heat dissipation surface roughly aligned with the left and right direction of the front axle bracket, and the radiator is installed to generate power for steering and turning the front wheels using power. A power steering device for a power vehicle, in which a steering unit is attached to a front axle bracket in a horizontally elongated manner close to the radiator, and most of the part fits within the left and right width of the radiator.