JPH0747444Y2 - Vibration shaft support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a support structure for a vibrating shaft of a vibrating roller, and more particularly to improvement of a support structure for a vibrating shaft on a traveling drive source side.

[Conventional technology]

Generally, the vibrating roller has a rolling wheel 51, as shown in FIG.
A traveling drive motor 52, which is a drive source for traveling the rolling wheels 51, is provided on one side of the inside, and a vibrating shaft 58 is provided on the other side of the rolling wheels 51.
An oscillating shaft drive motor 53, which is a drive source for rotating the rolling wheel 51 to vibrate (oscillate), is provided.

The output shaft 52a of the traveling drive motor 52 is connected to the rotary shaft 65 of the rolling wheels 51 via a reduction mechanism 67 such as a sun gear and a planetary gear. The traveling drive motor 52 separated from the rotary shaft 65 of the rolling wheel 51 by the bearing 66 is
Also, it is attached to one side of the frame 56 via the anti-vibration rubber 55, 55. The rotary shaft 65 of the rolling wheel 51 is
It is fixed to a side plate 57 on one side together with an oscillating shaft support member 60 described later.

On the other hand, in the drive shaft driving motor 53 disposed at a position facing the traveling drive motor 52, the fixed portion is a supporting member 54 '.
Also, it is attached to the other side of the frame 56 via the anti-vibration rubber 55, 55 '. The output shaft 53a of the vibration shaft driving motor 53 is connected via a coupling to a vibration shaft 58 that has an axis on the center line of rotation of the rolling wheels 51 and extends through the side plate 59 on the other side. There is. The vibrating shaft 58 is rotatably supported by a bearing 62 fitted to a source shaft supporting member 60 attached to a side plate 57 on one side and a bearing 63 fitted on a rotary shaft 61 attached to a side plate 59 on the other side. Is
An eccentric mass 64 is attached to the center thereof.

[Problems to be solved by the device]

By the way, conventionally, a traveling drive motor 52, which is a traveling drive source, is used.
Covers the vibrating shaft 58 side of the reduction mechanism 67 for oil sealing.
The support structure on the traveling drive source side of the vibrating shaft 58 is covered with the side plate 57 on one side of the rolling wheel 51, and the peripheral edge 60a of the vibrating shaft supporting member 60 is formed together with the flange 65a of the rotary shaft 65. Then, the bearing 62 is fitted inside the vibrating shaft support member 60, and the vibrating shaft is supported.
58 is supported. The blind plate 69 and the O-ring 70 seal the traveling drive source side, and the retaining ring 71 secures it. In addition, 72 is a spacer.

As described above, the conventional support structure for the vibration shaft 58 includes the flange 65a of the traveling drive motor 52 and the peripheral edge 60a of the vibration shaft support member 60.
And a side plate 57 on one side of the rolling wheel 51 is tightened to have a so-called three-piece tightening structure, so that the concentricity with the vibration shaft driving motor 53 side is not sufficiently secured, and the vibration shaft is This has been a factor that reduces the life of the bearing 62 of the support member 60. That is, generally, when bolts and nuts are used to fasten the members, the three members are fastened when the structure is unavoidable. However, if the three elastic members are fastened in this manner, the flatness error of each member, etc. Therefore, the bending force is required in the non-contact area between the members, and the axial force of the tightening torque does not always work as the tightening force.
Insufficient tightening force cannot be secured. Further, as a result of the above-mentioned bending force acting, the effect thereof causes the deformation of the entire member, and in the above-mentioned conventional support structure of the vibration shaft, it causes the deformation of the bearing portion, the concentricity system deteriorates, and the bearing life is affected. Is. Further, since the cover 68 is disposed inside the vibration shaft support member 60, the number of parts is large, the peripheral portion becomes complicated in space, the cost is high, and the assembling work efficiency is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks of the prior art, provide a concentricity accuracy, have a small number of parts, and provide a vibrating shaft support structure with good assembly work efficiency.

[Means for Solving the Problems]

In order to achieve the above object, the present invention has a traveling drive source on one side of the rolling wheel to rotate the rolling wheel, and the center of rotation inside the rolling wheel on the other side of the rolling wheel. A vibrating roller that has a vibrating shaft on the line and a vibrating drive source, and that generates oscillating force by an eccentric mass attached to the vibrating shaft to compact soil, etc., on one side of the rolling wheel. A traveling drive source attached to the side plate and having an output shaft on the center line of rotation of the rolling wheels, so as to cover the inner side of the traveling drive source,
A concave bearing portion having an axis on the center line of rotation of the rolling wheels is attached, and the bearing fitted in the concave bearing portion pivotally supports one end of the origin shaft. The present invention provides a support structure for a vibrating shaft.

[Action]

The traveling drive source is directly attached to the side plate on one side of the rolling wheels,
A concave bearing portion is attached to this traveling drive source, and the exciter shaft is supported on the center line of rotation of the rolling wheels.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan sectional view of a rolling wheel provided with a support structure for a vibrating shaft according to the present invention, and its basic structure is the same as the conventional one shown in FIG. The same reference numerals are given to members and members, and detailed description thereof will be omitted.

As shown in FIG. 1, one side of the rolling wheel 51
The traveling drive motor 52, which is a drive source for traveling the 51, and the other side inside the rolling wheel 51, the vibrating shaft 58 is rotated to rotate the rolling wheel 51.
For driving a vibrating shaft that is a drive source for vibrating (exciting)
53 are arranged. The traveling drive motor 52 is attached to one side of the frame 56 via the support member 54 and the vibration isolating rubbers 55, 55, and the flange 65a of the rotating shaft 65 thereof is directly attached and held to the side plate 57 by bolts. It has a structure. The bearing portion 1 for supporting the vibrating shaft 58 is mounted and fastened to the rotary shaft 65 of the traveling drive motor 52. The bearing portion 1 is formed with a recess 2 having a shaft center on the center line of rotation of the rolling wheel 51 on the center side of the rolling wheel 51, and also serves as a cover for covering the inner side of the traveling drive motor 52. . A bearing 62 is fitted in the concave portion 2 of the bearing portion 1, is fixed by the retaining ring 3, and one end portion of the vibrating shaft 58 is supported. The other end of the vibrating shaft 58 has a side plate 59 on the other side of the rolling wheel 51.
Is supported by.

[Effect of device]

With the above-mentioned configuration, the flange 65a of the rotary shaft 65 of the traveling drive motor 52 is directly attached to the side plate 57 on one side of the rolling wheel 51 to form a two-sheet tightening structure, and the rotary shaft 65 rotates the rolling wheel 51. Since the concave bearing part 1 having the shaft center on the center line is attached and tightened together, the concentricity failure due to the conventional three-piece tightening structure is improved and the accuracy is improved. Can be extended. In particular, bearings for vibration shafts are subject to extremely harsh operating conditions, and concentricity accuracy is greatly affected by the service life.The present invention can meet that requirement, and can greatly contribute to improving reliability. It was

Further, since the bearing portion 1 for supporting the vibrating shaft 58 also serves as a cover for covering the inner side of the traveling drive motor 52, the number of parts can be reduced and the cost can be reduced. Further, the work of fastening the concave bearing portion 1 to the rotary shaft 65 and the work of fastening the flange 65a of the rotary shaft 65 to the side plate 57 on one side of the rolling wheel 51 should be performed at different places and at different times. As a result, the assembly work efficiency is greatly improved.

[Brief description of drawings]

FIG. 1 is a plan sectional view of a rolling wheel provided with a support structure for a vibrating shaft according to the present invention. FIG. 2 is a plan sectional view of a rolling wheel provided with a conventional support structure for a vibrating shaft. 1 ... Bearing part 2 ... Recessed part 51 ... Rolling wheel 52 ... Traveling drive motor 53 ... Excitation shaft drive motor 57 ... Side plate 58 ... Excitation shaft 62 ... Bearing 64 ... Eccentric mass 65 ... Rotation shaft

Claims (1)

[Scope of utility model registration request] 1. A running drive source for running and rotating the rolling wheel is provided on one side of the rolling wheel, and a vibrating shaft located on the center line of rotation inside the rolling wheel is provided on the other side of the rolling wheel. In a vibrating roller that has a vibration drive source and that generates oscillating force by an eccentric mass attached to the vibrating shaft to compact soil or the like, the vibrating roller is attached to one side plate of the rolling wheel and To the traveling drive source having the output shaft on the rotation center line, a concave bearing portion having an axis on the rotation center line of the rolling wheels is attached so as to cover the inner side of the traveling drive source. A support structure for a vibrating shaft, characterized in that a bearing fitted to the portion pivotally supports one end of the vibrating shaft.