JPH06287908A - Vibratory rotor vibrated by two shafts - Google Patents

Abstract

PURPOSE:To improve efficiency of radiation and reduce the temperature rise of lubricating oil by storing cooling liquid for cooling a vibrating machine case in a rolling ring to radiate heat generated by the pivoting of an eccentric shaft. CONSTITUTION:Lubricating oil 30 is received in a vibrating machine case 5 until it reaches a pair of eccentric shafts 6, 7. Cooling liquid 50 is stored in a rolling ring 1 until it reaches the vibrating machine case 5. Heat generated by the high speed pivoting of the eccentric shafts 6, 7 is transmitted to the lubricating oil 30 having a large contact area through the vibrating machine case 5 and cooling liquid 50 to rolling ring 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biaxial vibration vibrating roller used for compacting a road surface or the like, and particularly capable of efficiently dissipating heat generated by high speed rotation of a pair of eccentric shafts. The present invention relates to a shaft excitation vibration roller.

[0002]

2. Description of the Related Art A two-axis vibration vibrating roller is disclosed in
4-607, JP-A-63-315711,
JP-A-1-290801 or JP-A-4-146
As described in Japanese Patent No. 303, etc., in a rolling wheel, a rotary shaft having a rotation axis in a direction parallel to the rolling center line
The two eccentric shafts are rotated in opposite directions so that the ground contact portion of the rolling wheel is caused to vibrate in a specific direction or in a specific pattern. The present invention is intended for these two-axis vibration-vibration rollers, but as a representative example, the one described in Japanese Patent Application Laid-Open No. 4-146303 will be described. In the horizontal direction with respect to the rolling wheel rotation center line. An eccentric weight is attached to a rotary shaft that is symmetrically spaced apart from each other and is driven to rotate in the opposite direction at the same rotational speed, and this rotary shaft is rotated. In rotation, they are aligned vertically and symmetrically in the horizontal direction.The action forces of both eccentric weights act in the vertical direction and cancel each other in the horizontal direction, resulting in zero action force. The vibrating roller is configured to vibrate only in the vertical direction.

Conventionally, as shown in FIG. 3 (a), this type of biaxial vibration vibrating roller has a vibration generator case 5 inside a rolling wheel 1.
And the eccentric weights 6a, 7a
Is supported by a pair of eccentric shafts 6 and 7, and the lubricating oil 30 is stored inside the vibrator case 5 to a predetermined level.

[0004]

In the bearing of the eccentric shaft of the vibrating roller, a large amount of heat is generated due to the high speed rotation of the eccentric shaft. In a normal 1-axis oscillating roller as described in Japanese Utility Model Laid-Open No. 2-47233, the oscillating machine case and the rolling wheels are integrated and the contact area between them is large. There is no problem because heat is sufficiently transferred to the rolling wheels having the largest surface area and excellent heat transfer coefficient. However, in the above-mentioned two-shaft type vibrating roller, in order to generate a specific vibration direction or a specific vibration pattern, the exciter case inside the rolling wheel is integrated with the rolling wheel. However, in both cases, a rolling bearing having a very small contact area between the vibrating casing and the rolling wheels is pivotally supported. Therefore, as shown in (b) of FIG. 3, heat generated by the high-speed rotation of the pair of eccentric shafts passes through the rolling bearing through the lubricating oil in the vibration case and the vibration case. Only transmitted to the rolling wheel 1. Therefore, there is a drawback that the heat dissipation is poor and the temperature of the lubricating oil in the vibrating case 5 rises.

An object of the present invention is to provide a novel biaxial vibration vibrating roller which solves the problems inherent in the conventional biaxial vibrating roller described above.

[0006]

In order to achieve the above object, the present invention provides a support attached to the left and right frames of a rolling wheel and a rotating shaft in a direction parallel to the rolling center line of the rolling wheel. A pair of eccentric shafts, and a vibrating machine case containing a lubricating oil, which surrounds the pair of eccentric shafts in the rolling wheel and is supported by at least one of the left and right supports, and is mounted on the supports. A rotary drive mechanism that rotates the pair of eccentric shafts, and a left and right rolling bearing that pivotally supports between the exciter case and the rolling wheels. A biaxial vibration-vibration roller is configured to store a cooling liquid for cooling the vibration case.

[0007]

The heat generated by the rotation of the eccentric shaft is transmitted to the rolling wheels through the lubricating oil in the vibration generator case and the cooling liquid from the vibration generator case, and is sufficiently dissipated.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a plan sectional view of a rolling wheel of a biaxial vibration-vibration roller according to the present invention. End plates 3 and 3 integral with support members 2 and 2 having shaft holes 2a and 2a formed in the center are provided separately in the rolling wheel 1, and a vibration mechanism is provided between the end plates 3 and 3. 4 are housed. This vibrating mechanism 4 includes a cylindrical exciter case 5 and this exciter case 5
A pair of eccentric shafts 6 and 7 having eccentric weights 6a and 7a axially supported therein, a gear train 8 that rotationally drives the eccentric shafts 6 and 7, and an oscillating motor 9 are mainly configured. A hollow shaft portion 5 is provided on both sides of the exciter case 5.
a and 5b are integrally formed, and the right shaft portion 5a
Is supported by the support 10A and the support 10
A is attached to the frame 12 via a vibration isolation member 11A. Support members 2 and 2 integrated with the end plates 3 and 3 of the rolling wheel 1.
The shaft holes 2a, 2a formed in the shaft are formed in the shaft portion 5 of the vibrator case 5.
a and 5b are supported via rolling bearings 13 and 13.

On the other hand, a traveling drive motor 14 with a speed reducer is attached to the left support 10B, and its rotation drive portion 14a is fixed to a support member 2 integral with the end plate 3 of the rolling wheel 1. Therefore, the rolling wheel 1 is the shaft portion 5 of the exciter case 5.
It will roll around a and 5b. The support 10B on the left side is attached to the frame 12 via a vibration isolation member 11B.

The vibrating motor 9 has a support 10 on the right side.
A drive shaft 16 fixed to A and connected to the rotary shaft of the vibration-exciting motor 9 via a coupling 15 is an axial center of the shaft portion 5a on the right side of the exciter case 5. Is rotatably supported by the rolling bearing 17. Further, the pair of eccentric shafts 6 and 7 are in a horizontal positional relationship with the road surface, and the exciter case
Bearings 18 are respectively supported on inner walls 5c and 5d that are integral with the sleeve 5. Power transmission to the pair of eccentric shafts 6 and 7 is performed by the gear train 8. That is, when the gear 20 fixed to the drive shaft 16 rotates, the driven gear 21 meshing with the gear 20 rotates and one eccentric shaft 6 rotates, and the drive gear fixed to the eccentric shaft 6 rotates. By 22,
The gear 23 meshing with this rotates and the other eccentric shaft 7
The eccentric shaft 6 rotates in the opposite direction. At this time, the mutual relationship of the eccentric weights 6a and 7a of the eccentric shafts 6 and 7 and the eccentric position are eccentric with a phase difference of 180 degrees in the circumferential direction, and when they are rotated in the vertical state, they have the same vertical phase. Is set to.

As shown in FIG. 2 (a), the vibration generator case 5 contains the lubricating oil 30 until it reaches the pair of eccentric shafts 6 and 7, and also inside the rolling wheel 1, that is, the end plate. Three
During the period 3, the cooling liquid 50 is stored until it reaches the vibrator case 5. As the cooling liquid 50, water, lubricating oil, or other liquid having a cooling action is appropriately used.

According to the biaxial vibration vibrating roller having the above structure, the heat generated by the high-speed rotation of the pair of eccentric shafts 6 and 7 causes the contact area to increase as shown in FIG. The large lubricating oil is transmitted to the rolling wheels through the case of the vibration generator and further through the cooling liquid. The cooling liquid 50 does not necessarily have to be stored until it reaches the vibrator case 51. That is, even if the amount does not reach the shaker case 51, the cooling liquid adhering to the inner peripheral surface of the shaker wheel 1 is dripped into the shaker case 51 as the rolling wheel 1 rotates, and the shaker case 51 This is for cooling.

In the above embodiment, the biaxial vibration vibrating roller constituted so that the vibration direction is only the vertical direction has been described, but as described above, in the rolling wheel,
The object of the present invention is a two-axis vibration vibrating roller that causes two eccentric shafts having a rotation axis in a direction parallel to the rolling wheel rotation center line to rotate in opposite directions to vibrate the ground portion of the rolling wheel. , It does not matter its vibration direction or vibration pattern. Further, although the rolling wheels provided with the driving motor for driving have been described, even the driven rolling wheels can sufficiently function without departing from the gist of the present invention.

[0014]

According to the biaxial vibration vibrating roller having the above-described structure, the cooling liquid for cooling the vibration generator case is stored inside the rolling wheel. The heat generated by the high-speed rotation is transmitted from the lubricating oil having a large contact area, passes through the case of the vibration generator, and is further transferred to the rolling wheels through the cooling liquid to be dissipated. Therefore, the heat dissipation is good, the temperature rise of the lubricating oil is small, and the drawbacks of the prior art can be solved.

[Brief description of drawings]

FIG. 1 is a plan sectional view of a rolling wheel of a biaxial vibration vibrating roller according to an embodiment of the present invention.

2 (a) and 2 (b) are a cross-sectional view of FIG. 1 and a transmission path diagram showing the ease of passing heat by the thickness of the path.

3 (a) and 3 (b) are a cross-sectional view of a rolling wheel of a conventional biaxially oscillating vibrating roller and a diagram showing heat transfer by the thickness of a path.

[Explanation of symbols]

 1 ... Rolling wheel 2 ... Supporting member 3 ... End plate 4 ... Vibration mechanism 5 ... Vibrator case 5a ... Hole 6 ... Eccentric shaft 6a ... Eccentric weight 7 ... Eccentric shaft 7a ... Eccentric weight 8 ... Gear train 9 ... For vibration Motor 10A ... Support 10B ... Support 11A ... Anti-vibration member 11B ... Anti-vibration member 12 ... Frame 13 ... Rolling bearing 14 ... Reduction drive motor 14a ... Rotational drive unit 15 ... Coupling 16 ... Drive shaft 17 ... Rolling bearing 18 ... Rolling bearing 20 ... Gear 21 ... Driven gear 22 ... Drive gear 23 ... Gear 30 ... Lubricating oil 50 ... Cooling liquid

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[Procedure amendment]

[Submission date] April 16, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (1)

[Claims] 1. A support member attached to the left and right frames of the rolling wheel, a pair of eccentric shafts having a rotating shaft in a direction parallel to the rolling center line of the rolling wheel, and the pair of eccentric shafts in the rolling wheel. A vibrating machine case that surrounds and is supported by at least one of the left and right support bodies and that contains lubricating oil; a rotation drive mechanism that is attached to the support body and that rotates the pair of eccentric shafts; In a vibrating roller provided with left and right rolling bearings that pivotally support between a vibrating case and rolling wheels, it is possible to store a cooling liquid for cooling the vibrating case inside the rolling wheels. A characteristic biaxial vibration vibrating roller.