JPH0222166B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates primarily to a compaction roller used for compacting ground, road surfaces, etc.

[Prior art]

Conventionally known rollers of this type have both ends of the axles of the front and rear roller drums supported by both sides of the frame serving as the body frame, and the power transmission part for applying driving force and vibration to these roller drums is the roller. It is generally known that the drum is provided on the outside of one of the side plates of the frame that supports the drum.

In addition, the frame for supporting both the front and rear roller drums is configured in an S-shape in plan, and the axles of the front and rear roller drums are offset from both ends of this S-shaped frame, with the sides of the front and rear roller drums being offset from each other. , one supported in a cantilevered manner is also known (Special Publication No. 45-21145).

[Problem that the invention seeks to solve]

By the way, among the conventionally known rollers mentioned above, those of the type in which the shaft end of the roller drum axle is supported by both sides of the frame of the machine body are located inside the side plates of the frame, so that they do not touch walls or curbs. When compressing the area directly below the
There is a problem in that the side plates of the frame and the transmission mechanism collide with walls and curbs, making it impossible to apply pressure to the area immediately below these structures as desired.

On the other hand, among conventional rollers, the frame is S-shaped in plan, and one end of the roller drum axle is cantilevered to one side plate of the frame. Therefore, one end of the roller drum can press against the wall or the area directly below the curb. However, with this type of roller, the axle support of the roller drum is cantilevered, and the machine body is constantly subjected to vibrations, making the bearing of the roller drum axle unstable and prone to damage. There's a problem.

[Means for solving problems]

The present invention took into consideration the problems of the conventional compaction roller as described above, and installed a frame necessary for pivotally supporting both the front and rear roller drums and a transmission mechanism for transmitting power to these roller drums on the machine body. By providing the compaction roller at the center of the lower surface, it is intended to provide a compaction roller having a structure in which there are no members present outside both ends of the roller drum that would impede compaction pressure.

As a means for that purpose, in the present invention, an axle frame is vertically provided at the center part of the lower surface of the engine frame along the length direction of the machine body, and the front and rear axle ends of the axle frame are provided at both ends of the axle frame, which pass through both sides of the bearing part at the front and rear of the machine body. Each roller drum or wheel is mounted on a shaft, and a drive output shaft protrudes from the power source on the engine frame to the underside of the engine frame, and the bearings on both the front and rear of the aircraft are erected to transmit power orthogonally to the internal axle. The upper ends of both drive shafts are connected by a transmission means such as a belt or a chain.

[Effect]

In the compaction roller of the present invention, the center portions of the axles of both the front and rear roller drums are pivotally supported by a vertical axle frame provided at the center portion of the lower surface of the engine frame along the length direction of the machine body. The front and rear axles are each supported by a stable center part, and both left and right roller drums are mounted on both ends of the axle centering on the axle frame, and the outside of these roller drums impedes the rolling pressure. Pivotal attachment can be achieved without the need for any special members.

In addition, the driving force is transmitted to the front and rear axles through a gap between the left and right rollers, which has a width slightly larger than the thickness of the axle frame at the center of the lower surface of the machine, so that the power can be transmitted orthogonally to the axle in the bearing section. Since the driving force can be transmitted to the axle shaft through the vertically arranged drive shaft, the driving force to the axle shaft can be smoothly transmitted from the center of the roller without providing any member on the outside of the roller that would obstruct the pressure.

〔Example〕

Next, a preferred embodiment of the present invention will be described based on the drawings. As shown in FIG. The output shaft 3 is connected to the input shaft side of the transmission 5 via a centrifugal clutch 4. The output shaft of a hydraulic motor 6 attached to the output shaft side of the transmission 5 projects from the lower surface of the engine frame 1 as a vertical drive output shaft 9 via bevel gears 7 and 8 .

Anti-vibration rubber 10 is installed on the bottom surface of the engine frame 1.
A vehicle body frame 11 is provided via. The vehicle body frame 11 has the front and rear surfaces parallel to the engine frame 1, and is provided with a valley-shaped vibration support surface 11a in the center of the vehicle body. Further, as shown in FIG. 3, on the lower surface of this body frame 11, a wall-shaped axle frame 1 is provided at the center along the length direction of the body.
2 are welded together to form a T-shape when viewed from the front and rear directions of the fuselage.

As shown in FIGS. 1 and 2, bearings 13 are provided at the front and rear of the axle frame 12, and the center portions of both the front and rear axles 14 are rotatable within these bearings 13. The bearing part 1
3, the respective axles 14 projecting outwardly on both the left and right sides.
Left and right roller drums 15 are pivotally attached to both ends of the machine by means such as pins 16, leaving a gap W that allows the plate thickness of the axle frame 12 to intervene, so that they can be attached and detached from both sides of the machine body as necessary. There is.

The peripheral edges of both the front and rear bearings 13 are fixed integrally with the axle frame 12 except for the upper ends 17, and as shown in FIG. A notch 18 is provided in the upper part.

Inside these bearing parts 13, as shown in FIGS. 2 and 4, a vertical drive shaft 19 having a worm 20 at the lower end passes through the upper end 17 of the bearing part and the axle frame notch 18, and the upper end of the shaft is inserted into the bearing part 13. It is provided so as to protrude above the horizontal vehicle body frame 11. The thickness of these drive shafts 19 is approximately the same as the plate thickness of the axle frame 12, so as not to interfere with the gap W between the roller drums 15. Further, the worm 20 at the lower end of these drive shafts 19 meshes with a helical gear 21 provided on the axle 14 within the bearing portion 13.
A transmission means 24 such as a belt or chain is stretched between the coaxial upper end pulley 22 protruding from the upper surface and the pulley 23 of the drive output shaft 3 protruding from the lower surface of the engine frame 1. Driving force from a power source on the machine body is transmitted to the axles 14 of both the front and rear roller drums 15.

Vibrating body support portion 11a at the center of the vehicle body frame 11
As shown in FIGS. 2 and 5, the vibration generating body 25 fixed above has two pendulum shafts 27 that rotate in opposite directions, oriented along the length direction of the aircraft body, that is, both pendulum shafts 27. are arranged in a direction perpendicular to the front and rear roller drum axles 14. This vibration generating body 25 includes a pulley 29 that rotates both pendulum shafts 27,
A pulley 30 loosely inserted into the engine output shaft 3 on the engine frame 1 is connected by a belt 31 to rotate. This output shaft pulley 30
As shown in FIG. 6, one side is always pressed toward the clutch plate 34 of the centrifugal clutch 4 by an operating ring 33 that slides on the same axis under the force of a spring 32 wound around the engine output shaft 3. As a result, rotation from the clutch plate 34 is received, and the rotation is transmitted to the vibrator 25 by the belt 31.

The operating ring 33 is supported by the upper end of a bracket 37 that is pivotally supported by a support shaft 36 of a bearing 35 provided on the engine frame 1, and is mounted on the engine frame 1 as shown in FIG. , a spring-loaded rod 38 with an operating lever 39 at the rear end of the fuselage
The tip of the actuating arm 40 of the bracket 37
is connected to. Therefore, in FIG. 6, when the rod 38 is pulled to the right and the bracket 37 moves the operating ring 33 to the left in the drawing, one side of the output shaft pulley 30 separates to the left in the drawing, and the belt 31 Release the crimp of the vibrating body 25.
rotation is blocked. Of course, the centrifugal clutch 4 does not transmit the rotation to the mission 5 if the rotation speed of the engine output shaft 3 is low, and when it reaches a predetermined rotation speed, the centrifugal clutch 4 transfers the rotation to the mission 5.
and transmits the power to the roller drum 15.

As shown in FIGS. 1 to 4, in the above embodiment, the roller drum 15 was attached to both the front and rear axles 14, but depending on the type of work, the roller drum 15
In place of 5, a working rubber wheel may be attached to the shaft.

[Effect] As described above, the present invention provides a vertical axle frame 12 at the center portion of the lower surface of the engine frame along the length direction of the aircraft body, and the center portions of both the front and rear axles 14 are connected to the axle frame 12 by the axle frame 12. As a result, the axle 14 can be supported stably even against the vibrations of the vibrating body 25, and both outer ends of the roller drum attached to both ends of the axle can be completely free. It is possible to apply pressure to a wall or curb on either the left or right side of the roller while it is in close contact with a wall or curb. Therefore, unlike conventional rollers of this type, it is possible to apply pressure directly under a wall or curb without any pressure. This has the effect of reliably solving the problem of

In addition, the driving force to the roller drum is transmitted to the drive shaft through the gap between the roller drums at both ends of the axle.
9 is provided in the bearing portion 13, this helps to solve the problem of transmitting the driving force from the outer end of the roller drum, and the driving force can be transmitted without any trouble. Further, since the driving force is transmitted by the vertical drive shaft 19, there is an effect that even if dirt attached to the roller drum adheres to the drive shaft 19, it does not interfere with the transmission of the driving force.

Furthermore, when the pendulum shaft 27 of the vibrating body 25 is arranged parallel to the longitudinal direction of the machine body as in the compaction machine of the present invention, the vibration of the eccentric pendulum is oriented not in the longitudinal direction of the machine body but in the direction of both sides. Therefore, it is possible to eliminate unevenness in the forward and backward movement of the aircraft caused by vibrations directed in the longitudinal direction of the aircraft as in conventional rollers of this type, and to provide smooth forward and backward movement of the aircraft.

Another advantage of the roller of this invention is that the roller drum can be freely attached and detached from both ends of the axle, so working wheels other than the roller drum can be quickly and easily replaced depending on the work situation, so it can be used for a wide range of applications. has.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of a compaction roller according to the present invention, FIG. 2 is a plan view taken from the - line in FIG. 1, and FIG. 3 is a sectional view taken from the - line in FIG. Fig. 4 is a sectional view taken from the - line in Fig. 1, Fig. 5 is a sectional view taken from the - line in Fig. 1, and Fig. 6 is a partially enlarged sectional view showing the configuration of the engine output shaft and clutch portion. be. In the figure, 1... engine frame, 2...
Engine, 3...Output shaft, 4...Centrifugal clutch,
5...Mission, 6...Hydraulic motor, 9...Drive output shaft, 11...Vehicle frame, 12...Axle frame, 13...Bearing portion, 14...Axle, 15
... Roller drum, 16 ... Pin, 18 ... Notch, 19 ... Drive shaft, 20 ... Worm, 21 ...
... Helical gear, 24 ... Belt, 25 ... Vibrator, 26 ... Eccentric pendulum, 27 ... Pendulum shaft, 33 ...
...Operating ring, 34...Clutch plate.

Claims (1)

[Scope of Claims] 1. A vertical axle frame is provided at the center of the lower surface of the engine frame along the length of the machine, and the axle centers of both the front and rear roller drums are connected to the axles by bearings provided at the front and rear of the axle frame. roller drums are mounted on both ends of the axle with the axle frame at the center, and a drive output shaft protruding from the lower surface of the engine frame and a gap between the roller drums at both ends of the axle pass through the gap between the drive output shaft and the roller drum at both ends of the axle. A compaction roller configured by connecting an upper end of a drive shaft erected on the bearing part with a transmission means such as a belt so as to transmit power orthogonally to the axle. 2. The compaction roller according to claim 1, wherein the vibration generating body provided between the front and rear wheels is arranged in such a direction that the axial direction of the pendulum shaft is perpendicular to the axle of the front and rear roller drums. 3. Claims 1 or 2, in which roller drums or various working wheels are removably attached to both ends of the front and rear axles, which are pivotally supported around an axle frame, so that they can be replaced as necessary. Compaction roller as described in section.