JP2506702Y2 - Cab mounting device for cab-over type vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a cab mounting device for a cab-over type vehicle.

(Prior Art) In order to improve the riding comfort of the cab in a cab-over type vehicle and reduce the fatigue of the occupant such as a driver, the cab is elastically suspended with respect to the chassis frame via suspension springs and shock absorbers. Floating cab mounting devices have been widely used from the past.
In addition, in this type of cab mounting apparatus, generally, the front end of the cab is supported by the chassis frame via a suspension spring formed of a coil spring or a U-shaped leaf spring, a shock absorber, and a link device, and the cab is mounted. The rear end portion is a rod-shaped member that extends in the vehicle width direction, that is, a floating bar, which is elastically supported by a U-shaped cab bridge that is installed between the left and right side rails of the chassis frame through a coil spring and a shock absorber. It is usually mounted on top.

Further, in the above conventional floating cab mounting device, a stabilizer or an anti-roll bar is often provided in order to suppress the roll of the cab that occurs when turning and to improve riding comfort and running stability. But
All conventional stabilizers are located at the front end of the cab.

(Problems to be Solved by the Invention) In the floating type cab mounting device, in the conventional configuration in which the stabilizer is arranged at the front end portion of the cab, the spring and the shock absorber for suspending the front end portion of the cab so that the cab can float. In addition, a tilt shaft for tilting up the cab when inspecting and servicing the engine, engine control and steering, transmission members for gear shifting and braking systems, piping, wiring, etc. Since the stabilizer has to be additionally arranged, there is a problem that the workability of assembling and maintenance is poor due to the extremely tight space.
Further, there is a drawback that the structure becomes complicated because some means for suppressing the excessive displacement in the front-rear direction of the floating bar supporting the rear end portion of the cab is required.

The present invention was made in view of the above circumstances, and improves the workability of assembly and maintenance by arranging a stabilizer for restraining the roll of the cab at the rear end portion of the cab, and at the same time, the front-back direction of the floating bar. It is an object of the present invention to provide a cab mounting device for a cab-over type vehicle that can achieve simplification of the structure by omitting the positioning means for suppressing the displacement of the cab.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention has a front end portion of a cab supported on a chassis frame via a suspension spring and a rear end portion of the cab arranged in a vehicle width direction. In what is elastically supported on a cab bridge that is erected on the chassis frame via a floating bar that is installed, below the rear part of the cab, on the same side as the horizontal side that extends in the vehicle width direction, A stabilizer consisting of a pair of vertical arms extending from both ends to the rear of the vehicle body is provided, and both sides of the stabilizer's lateral sides are pivotally supported by the cab's main sill, and the rear ends of the pair of vertical arms are floating bars. The present invention proposes a cab mounting device for a cab-over type vehicle, which is characterized by being pivotally attached to the cab.

(Operation) According to the present invention, a stabilizer having a U-shaped planar shape, which includes a lateral side extending in the vehicle width direction and a pair of vertical arms extending to the rear of the vehicle from both ends of the lateral side, Since it is arranged below the rear end of the cab, which has more space than the front end of the cab, the workability of assembly and maintenance is improved. Further, since the rear end of the vertical arm of the stabilizer attached to the cab is pivotally attached to the floating bar, the stabilizer functions as a positioning member for the floating bar in the longitudinal direction of the vehicle body, so that it is not necessary to provide an independent positioning means. , Simplification of the structure is achieved.

(Embodiment) An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. In the figure, reference numeral 10 is a pair of left and right side rails constituting a chassis frame of a cab-over truck, 12 is a cab mounted near the front end of the chassis frame, and 14 is a strength member arranged below the floor of the cab 12. Of the main sill, 16 is a bracket fixed to the lower surface of the front end of the main sill 14 for pivotally supporting the tilt shaft 18 shown by the dotted line in the figure, and 20 is a connecting arm whose front end is pivotally attached to the tilt shaft 18. , 22 is the above side rail
A bracket mounted on the upper side of 10 to pivotally support the rear end of the connecting arm 20, 24 is the connecting arm
A suspension spring interposed between 20 and the side rail 10, 26 is an inverted U-shaped cab bridge installed between the left and right side rails 10, and 28 is the above cab bridge 26
A floating bar extending in the vehicle width direction supported by a suspension spring 30 on the upper side of 32, a locking device 32 for connecting the rear end of the cab 12 to the floating bar 28 in the normal state, and a rear 34 of the cab 12. This is a stabilizer that is disposed on the lower side of the part and has a U-shaped planar shape.

The stabilizer 34 has a lateral side 36 extending in the vehicle width direction.
And a pair of vertical arms 38 extending rearward of the vehicle body from both ends of the horizontal side 36. The horizontal side 36 has a rubber bush on a support bracket 40 attached to the lower surface of the main sill 14 near both ends thereof. And the rear ends of the pair of vertical arms 38 are removably pivoted to the brackets 42 mounted on the floating bar 28 via rubber bushes.

Although not shown in the drawings, an appropriate member of the front end portion of the cab 12, such as the bracket 16, the tilt shaft 18, or the front end portion of the mainsill 14 and the front end portion of the side rail 10, is a fluid-type tubular shock absorber. It is customary that a shock absorber is also interposed between the floating bar 28 and the cab bridge 26, which are connected to the cab via the locking device 32, and are also installed at the rear end portion of the cab 12. .

According to the above configuration, the roll displacement of the cab that occurs during traveling of the vehicle, particularly during turning traveling, is effected in a manner well known in the art by the U-shaped stabilizer 34 disposed in the rear portion of the cab. And the riding comfort and traveling stability are improved. Since the stabilizer 34 is arranged on the lower side of the rear portion of the cab 12 instead of the front end portion of the cab 12 in which steering, engine control, various members of the speed change operation and brake system, piping, wiring, etc. are concentrated, There are few problems above, and there is an advantage that workability such as mounting and maintenance of the stabilizer 34 is extremely excellent. In addition, the vertical arm 38 of the stabilizer 34 is a floating bar 28.
Since the floating bar 28 is pivotally mounted on the vehicle, the floating bar 28 is positioned by the stabilizer in the front-rear direction of the vehicle body, and it is not necessary to separately provide a positioning means, thereby simplifying the structure and reducing the manufacturing cost. It

(Effect of the Invention) As described above, in the cab mounting device for a cab-over type vehicle according to the present invention, the front end portion of the cab is supported on the chassis frame through the suspension spring, and the rear end portion of the cab is What is elastically supported on a cab bridge installed on a chassis frame via a floating bar arranged in the vehicle width direction, in which a lateral side extending in the vehicle width direction is below the rear portion of the cab. A stabilizer consisting of a pair of vertical arms extending from both ends of the same horizontal side to the rear of the vehicle body is provided, and both ends of the horizontal side of the stabilizer are pivotally supported on the main sill of the cab and a pair of vertical arms The cab mounting device is characterized in that the rear ends thereof are pivotally attached to the floating bars, respectively, and it is possible to provide a cab mounting device having a simple structure and low cost, which is excellent in riding comfort and traveling stability, and is therefore practically useful. You.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG.
FIG. 2 is a plan view of a main part as seen from the direction of arrow II in the figure. 10 ... chassis frame side rails, 12 ... cab, 14 ... mainsill or underframe, 20 ... connecting arms, 24 and 30 ... suspension springs, 28 ... floating bars, 34 ... stabilizers.

Claims (1)

(57) [Scope of utility model registration request] 1. A cab in which a front end portion of the cab is supported on a chassis frame via a suspension spring, and a rear end portion of the cab is installed on the chassis frame via a floating bar arranged in the vehicle width direction. An elastically supported one on the bridge, which is formed on the lower side of the rear portion of the cab and includes a lateral side extending in the vehicle width direction and a pair of vertical arms extending rearward of the vehicle body from both ends of the lateral side. A cab-over type vehicle is characterized in that a stabilizer is provided, and both ends of the lateral sides of the stabilizer are pivotally supported by the main sill of the cab, and the rear ends of a pair of vertical arms are pivotally connected to the floating bars. Cab mounting device.