JPS63315711A - Vibration roller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vibrating roller having a vibration mechanism inside the rolling wheel used in a compaction machine for road surfaces, etc., and in particular, it relates to a vibrating roller having a vibration mechanism inside the rolling wheel. This invention relates to a vibrating roller that can switch vertical vibration.

[Conventional technology]

Conventionally, as a vibration mechanism for a vibrating roller in a compaction machine, an eccentric mass is attached to a rotating shaft provided on a rolling wheel along the center line of rotation of the rolling wheel, and by rotating the rotating shaft, the rolling wheel is rotated. It is well known to vibrate vertically with respect to the grounding part of the machine. However, in the case of a vibrating roller that vibrates vertically, the vertical vibration is transmitted through the ground, so vibration exceeding the limit is not desirable in terms of vibration regulation laws.

Particularly, when construction is carried out in residential areas or near facilities where ground vibration is averse, there is a risk of vibration pollution, which limits the scope of use.

Therefore, in Japanese Patent Publication No. 61-56724, the applicant of the present application previously proposed a method in which a rotating shaft of an eccentric mass is attached to a rolling wheel so that the center line of rotation of the rotating shaft is located on a straight line parallel to the radial direction of the rolling wheel. The eccentric mass is rotatably provided, and the mounting position of the eccentric mass with respect to the axis of the rotating shaft is determined with respect to the direction of the vibration-generating drive shaft of the rolling wheel, and the ground contact portion of the rolling wheel is vibrated in a substantially horizontal plane. , discloses a horizontal vibration mechanism that does not generate vibration pollution. .

[Problem that the invention seeks to solve]

However, because the conventional vertically vibrating rollers mentioned above have excellent compaction performance in relatively deep areas such as lower roadbeds, they are widely used in construction of roads and other areas where vibration pollution is not a problem except in residential areas. It has great utility value. Therefore, if possible, it is desirable to provide a vibrating roller with functions of vertical vibration and horizontal vibration in one machine, which can be easily switched depending on the construction environment.

Therefore, in Japanese Patent Application Laid-Open No. 61-257508, the applicant of the present application has proposed a vibrating roller having at least two rolling wheels, in which a vibration mechanism is attached to one of the rolling wheels to cause approximately horizontal vibration, and the other rolling wheel is provided with a vibration mechanism that causes vertical vibration. Although a vibrating roller is disclosed in which a vibrating mechanism is attached to generate the vibration and both vibrations are selectively used, it is expensive to provide separate vibrating mechanisms for both rolling wheels, and both wheels are not iron wheels. For example, one cannot be applied to compaction machines such as tire wheels.

The present invention was devised in view of the above-mentioned needs, and an object of the present invention is to provide a vibrating roller that allows switching from a horizontal vibrating mechanism to a vertical vibrating mechanism within one rolling wheel.

[Means for Solving the Problems and Their Effects] In order to achieve the above-mentioned requirements, the present invention provides a support body attached to the frame on the side of the rolling wheel, and a support body attached to the frame on the side of the rolling wheel, and a support body attached to the frame on the side of the rolling wheel; a pair of vibration axes disposed in symmetrical positions to form a vibration mechanism; a frame surrounding the vibration axes and rotatably supported on the rotation axis; and a frame and the support. a rotational drive mechanism disposed between the two and rotating the frame body, the rotational drive mechanism rotating the pair of vibration generating shafts from a positional relationship that is substantially perpendicular to the road surface to a positional relationship that is substantially horizontal to the road surface. It is characterized by what it did.

Preferably, the pair of vibration axes are provided to rotate in opposite directions, and the positional relationship between the eccentric masses of the vibration axes has a phase difference of approximately 180 degrees.

The pair of vibration generating shafts may be provided to rotate in opposite directions, and the positional relationship of the eccentric masses of the respective vibration generating shafts may be in substantially the same direction.

Further, the rotational drive mechanism may be a cylinder provided on the support body.

By adopting the above configuration, by rotating the frame using the rotary drive mechanism, it is possible to switch from a horizontal vibration mechanism to a vertical vibration mechanism within one rolling wheel. You can respond with

〔Example〕

Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 1 is a sectional view showing a rolling wheel of a vibrating roller according to a first embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main part of FIG. 1, and FIG. The figures show the rotational movement of the vibration generating shaft with an eccentric mass attached. Figure 4 is an explanatory view from the ■ arrow in Figure 1, and Figure 5 shows the first frame with the frame tilted 90 degrees by the cylinder.
This is an explanatory cross-sectional view taken along the line mm in the figure, showing the rotational movement of the vibration generating shaft with the eccentric mass attached.

In FIGS. 1 to 3, the rolling wheels 2 of the vibrating roller body 1
Inside, inner walls 3, 3 with shaft holes 4, 4 formed in the center are provided spaced apart, and a vibration mechanism 5 is installed between both inner walls 3.3.
is included. The vibration mechanism 5 includes a cylindrical frame body 6;
Eccentric masses 7A and 7B of the same mass housed in the frame 6
The main parts include a gear train 8 for rotationally driving the eccentrics 17A and 7B, a vibration motor 9, and a cylinder 10, which is one of the rotational drive mechanisms that allows the cylindrical frame 6 to rotate. It is configured. Hollow shaft portions 6A and 6B are integrally formed on both sides of the cylindrical frame 6, and the left shaft portion 6A in the figure is supported by a dish-shaped support 11 via a bearing 12. In addition, the support body 11 has a vibration-proof rubber 13.
It is fixed to the frame 14 via 13.

On the other hand, the rolling wheel 2 has a shaft hole 4 in each inner wall 3, 3 of the rolling wheel 2.
, 4 have bearings 15.15 on the shaft portions 6A, 6B of the frame 6.
, 15.15, the inner wall 3
The drive member 16 fixed to the frame member 16 is rotated by a drive motor 17 and a deceleration mechanism (not shown), so that the drive member 16 is rotated around the shaft portions 6A, 6B of the frame body 6. Reference numeral 18 denotes a support for the drive motor 17, and the support 18 is fixed to the frame 14 via anti-vibration rubber 13.13.

The vibration motor 9 is fixed to the frame 6, and the rotational shaft of the motor 9 and the drive shaft 20 connected to the rotational shaft via a coupling 19 are centered around the axis of the shaft portion 6A of the frame 6. It is supported by bearings 21.degree. 21 in an inserting manner. Further, the eccentric mass 7A.

7B is a vibration axis 22 that is perpendicular to the road surface.
A, 22B, respectively, and supported by inner walls 6C, 6D formed integrally with the frame 6 via bearings 23, 23°23.23. Power is transmitted to the vibration shafts 22A and 22B through the gear train 8. That is, drive shaft 2
When the gear 24 fixed at 0 rotates, the driven gear 25 meshing with it rotates, and the vibration generating shaft 22A on the eccentric ff1VA side rotates, and the drive fixed to this vibration generating shaft 22A rotates. The gear 27 is rotated by the gear 26, and the vibration generating shaft 22B on the side of the eccentric mass 7B is rotated in the opposite direction to that of the vibration generating shaft 22A. Note that the mutual relationship and eccentric position of the eccentric masses 7A and 7B are set as follows. That is, as shown in Figure 3, eccentric mass? A and 7B are eccentric in the circumferential direction with a phase difference of 180 degrees, and are fixed to the vibration generating shafts 22A and 22B so that they have the same horizontal phase when rotated horizontally.

As shown in FIGS. 2 and 4, the vibrating roller body 1 of the present invention has a cylinder 10 fixed to the dish-shaped support 11, and the piston rod 10a of the cylinder 10 is attached to the flange 6E of the frame 6. The piston rod 10a of the cylinder 10 can be rotated within a range of 90 degrees by the operation of the piston rod 10a of the cylinder 10. When rotated 90 degrees, the vibration axis 22A,
22B is in a state where it is pivotally supported in a horizontal positional relationship with the road surface, and the eccentric masses 7A and 7B are eccentric in the circumferential direction with a phase difference of 180 degrees, and when they are rotated vertically, they have the same vertical phase. It's supposed to be. In addition, 28.2
9 is a stopper for limiting the rotation of the frame 60.

With this configuration, before the piston rod 10a of the cylinder 10 is actuated, the pair of vibration shafts 22A, 22
B is in a positional relationship substantially perpendicular to the road surface, and as shown in FIG. 3, eccentric masses 7A and 7 are
Since B both point to the left, a vibration force acts on the ground contact part of the rolling wheel 2 in the direction P (to the left), and in the state (d), both eccentric masses A and 7B turn to the right. Therefore, rolling wheel 2
A vibration force acting in the Q direction (to the right) acts on the grounding part of the

In state (a) and state (C), i7A is eccentric to each other.

When 7B is pointing downward, it is upward, and when it is upward, it is downward, so the centrifugal forces cancel each other out. Therefore, the ground contact portion of the rolling wheel 2 performs horizontal vibration in the front-rear direction. cylinder 10
The piston rod 10a is extended and the frame body 6 is rotated 90 degrees to create a pair of vibration generating shafts 22A.

22B in a horizontal position relative to the road surface, as shown in FIG. 5, the eccentric mass 7A in the state (b) is
', 7B both face upward, so a vibration force in the R direction (upward) acts on the ground contact part of the rolling wheel 2, causing an eccentric mass 7A in the figure in state (d).

7B both point downward, a vibration force directed in the S direction (downward) acts on the ground contact portion of the rolling wheel 2. (a) State, (C
), when the eccentric masses 7A and 7B face right, they face left, and when they face left, they face right, so the centrifugal forces cancel each other out. Therefore, the ground contact portion of the rolling wheel 2 vibrates in the vertical direction.

In this way, the present invention can switch between horizontal vibration and vertical vibration by rotating the frame 6 through the operation of a rotational drive mechanism such as the cylinder 10, and can be easily operated by providing a switch in the cockpit or the like. can.

Next, a second embodiment of the present invention will be described. The second embodiment is the same as the first embodiment except that the eccentrics i7A and 7B of the pair of vibration axes 22A and 22B are arranged in substantially the same direction. Therefore, the operation of the second embodiment will be explained based on FIGS. 6 and 7.

Before the piston rod 10a of the cylinder 10 is actuated, the pair of vibration axes 22A and 22B are in a positional relationship substantially perpendicular to the road surface, and as shown in FIG. Since the masses 7A and 7B both point downward, a vibration force acting in the S direction (downward) acts on the ground contact part of the rolling wheel 2, and the eccentric masses 117A and 7B in the figure (in state C1)
Since both are directed upward, a vibration force directed in the R direction (upward) acts on the ground contact portion of the rolling wheel 2. In addition, in the figure, the eccentric mass 7A is directed to the left, and the eccentric mass 7B is directed to the right in the (mountain) state.
Therefore, the rolling wheel 2 receives a moment force, and the downward direction (
(to the right) vibration force acts. Also, in the +d) state, there is eccentricity in the figure! Since i7A faces to the right and eccentric mass 7B faces to the left, the rolling wheels 2 receive a moment force opposite to the tb> state, and a vibration force in the U direction (leftward direction) acts on the ground contact portion. Therefore, the ground contact portion of the rolling wheel 2 performs a mixed vibration of vertical vibration and horizontal vibration in the longitudinal direction.

The piston rod LOa of the cylinder 10 is extended and the frame body 6 is rotated by 90 degrees to generate a pair of vibration axes 22A.

22B in a horizontal position relative to the road surface, as shown in FIG. 7, in state (a), the eccentric mass 7A,
7B both point to the right, a vibration force acting in the Q direction (rightward) acts on the ground contact part of the rolling wheel 2, and in the state (C), both eccentrics 117a and 7b turn to the left in the figure. A vibration force directed in the P direction (leftward direction) acts on the ground contact portion of the rolling wheel 2.

In addition, in state (b), the eccentric mass 117a faces upward and the eccentric mass 7B faces downward in the figure, so the rolling wheel 2 receives a moment force, and a vibration force in the U direction (leftward direction) acts on the ground contact part. .

In addition, in the state (d), the eccentric mass 1t7A is directed downward and the eccentric mass 7B is directed upward in the figure, so the rolling wheel 2 is
), the grounding part receives a moment force opposite to the state in which it is in the downward direction (
(to the right) vibration force acts. Therefore, the ground contact portion of the rolling wheel 2 performs horizontal vibration in the front-rear direction.

In this way, even if the positional relationship of the eccentric masses of the pair of vibration axes is in substantially the same direction, it is possible to switch between on-road vibration and horizontal vibration.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications and embodiments may be made without departing from the spirit of the invention. For example, the rotational drive mechanism may be gears, chains, cams, etc., and operations other than switches at the cockpit are also possible, and the drive source may be pneumatic or hydraulic.

and electricity. Further, in this embodiment, power was transmitted from the vibration motor to the drive shaft using a coupling or a gear train, but means such as a joint, chain, or belt may also be used. Further, in this embodiment, the vibration motor is provided on the rotational axis of the rolling wheel, but it may be provided on the support, or the vibration motor may be transmitted to the drive shaft via a belt, chain, or the like.

〔Effect of the invention〕

As explained above, according to the vibrating roller of the present invention, by rotating the frame body using the rotary drive mechanism, it is possible to switch from a horizontal vibrating mechanism to a vertical vibrating mechanism within one rolling wheel, making it possible to change the construction environment. 9 can be easily handled with just one machine.

[Brief explanation of the drawing]

FIG. 1 of the embodiment diagrams is a sectional view showing a rolling wheel of a vibrating roller according to a first embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main part of FIG. 1, and FIG. ■ A line cross-sectional explanatory diagram showing the rotational movement of the vibration axis when there is a 180 degree phase difference in the positional relationship of the eccentric masses. Figure 4 is an explanatory diagram in the ■ arrow direction of Figure 1, and Figure 5 is the cylinder. m-1 in Figure 1 with the frame tilted 90 degrees by
Figure 6 shows the rotational movement of the vibration axis when there is a phase difference of 180 degrees in the positional relationship of the eccentric masses in the n-line cross-sectional explanatory diagram.
A second embodiment corresponding to the cross-sectional explanatory diagram in the figure shows a case in which the positional relationship of the eccentric masses is in the same direction, and FIG. 7 shows a second embodiment corresponding to the cross-sectional explanatory diagram in FIG. are in the same direction. 1... Vibrating roller body 2... Rolling wheel 5... Vibration mechanism 6... Cylindrical frame bodies 7A, 7B...
Eccentric mass 8 Gear train 9 Vibration motor 10 Cylinder 20 Drive shaft 22A, 22B Vibration shaft Patent applicant Sakai Heavy Industries Co., Ltd., Figure 1, Figure 2 Figure 3 (Q) (b) (C)
(d) Fig. 4 (Q) (b) Fig. 5 (a) (b) Fig. 6
Figures (a) (b) (c)
(d) (Q) (C) Figure 7 (b) (d)

Claims (4)

[Claims] (1) A support attached to the frame on the side of the rolling wheel;
a pair of vibration generating shafts arranged substantially symmetrically on the rotational axis of the rolling wheel and forming a vibration mechanism; a frame surrounding the vibration generating shaft and rotatably supported on the rotational axis; , a rotational drive mechanism that is located between the frame and the support and rotates the frame, and the rotational drive mechanism changes the pair of vibration axes from a positional relationship that is substantially perpendicular to the road surface to a position that is substantially horizontal. A vibrating roller characterized by rotating in a certain positional relationship. (2) A patent claim characterized in that the pair of vibration generating shafts are provided to rotate in opposite directions, and the positional relationship of the eccentric masses of the respective vibration generating shafts has a phase difference of approximately 180 degrees. The vibrating roller according to item 1. (3) The pair of vibration generating shafts are provided to rotate in opposite directions, and the positional relationship of the eccentric masses of the respective vibration generating shafts is in substantially the same direction. The vibrating roller according to item 1. (4) The vibrating roller according to claim 1, wherein the rotational drive mechanism is a cylinder provided on a support.