JPH0144574Y2 - - Google Patents

Description

[Detailed description of the invention] A. Industrial application field This invention relates to a vibration direction switching device in a vibratory rolling machine used for compacting road surfaces, and more specifically, it relates to a self-propelled device that moves forward or backward by switching the vibration direction. This paper relates to the improvement and creation of a switching device for a type of vibratory expansion machine.

B. Conventional technology Conventionally, as this type of vibrating expansion machine, there is one that obtains self-propelling force by installing two rotating pendulums with eccentric masses with relative phase positions that allow diagonal directional vibrations to be obtained. Furthermore, a technique is also known in which the self-propelling force is switched to the forward or backward direction by changing the phase of one rotating pendulum by 180 degrees (see, for example, Japanese Patent Publication No. 15152/1983).

C. Problems to be solved by the invention This invention relates to a switching device that has the function of changing the phase of a rotating pendulum by 180 degrees based on the above-mentioned conventional technology, and is based on the above-mentioned conventional technology. The technical challenge is to eliminate the effects.

In other words, if a switching device is provided to change the phase of the rotating pendulum by 180 degrees, the switching device and the operator's control lever must be directly connected with a wire, etc. On the other hand, the control lever is installed on the main body of the vibrating expansion machine, so both vibrate separately, and if they are connected with a wire, the switching state may be canceled due to mismatch in vibration, or the wire may There were problems such as the connecting points of the parts being damaged due to mechanical fatigue caused by vibration.

D. Means for solving the problems In order to solve the above problems, the switching device of this invention has the following configuration.

That is, in the switching device of this invention, one rotary oscillator and a main gear are fixed to a main drive shaft to be rotated by a power mechanism, and the other rotating pendulum is fixed to a driven shaft that meshes with this main shaft gear. An ankle-shaped clutch arm is fixed to this driven shaft so that it can be swung by the clutch lever. An engaging protrusion to be selectively engaged is provided, and a contact rod to be brought into cross-contact contact with the clutch lever is provided, and this contact rod is fixed to the vibration expansion machine so as to be swung by the connection of the operating wire. At the same time, the contact rod has a structure that provides elasticity between the contact rod and the pivot shaft so that it can ride over the clutch arm.

E. Functions Therefore, the switching device of this invention has the following functions.

First, by engaging either end of the clutch arm with the engagement protrusion of the driven gear, the rotation of the driven gear transmitted from the main driving shaft is transmitted to the driven shaft, and the two rotating pendulums are moved in opposite directions. It has a rotating action, and in this case, the phase of the driven gear is 180 degrees out of phase between one end and the other end of the clutch arm when engaged.
It has the effect of changing the phase of the rotating pendulum on the driven shaft side by 180 degrees by switching the clutch lever.

Second, when switching the clutch lever, the contact rod is rotated by the operation wire, and the contact rod presses and rotates the clutch lever, causing one end of the clutch arm to be connected to the engagement protrusion on the surface of the driven gear. By rotating the contact lever, the contact lever passes over the clutch lever and is positioned on the opposite side of the clutch lever.Now, by rotating the contact lever in the opposite direction, the clutch lever is moved from the opposite side. It has the effect of pressing and rotating in the opposite direction to engage the other end of the clutch arm with the engagement protrusion on the surface of the driven gear.

F. Embodiments Hereinafter, specific embodiments of the vibration direction switching device of this invention will be described based on the accompanying drawings.

FIG. 3 shows an example of a vibratory expansion machine implementing the vibration direction switching device of this invention.

This vibration expansion machine moves two rotary pendulums X and Y with eccentric masses to relative phase positions that can obtain directional vibration in an oblique direction (in this example, when one rotary pendulum faces upward, the other rotary pendulum is oriented in the horizontal direction).
It is a conventionally known one having on the spreading pressure plate C1,
A rotating pendulum and a series of clutch mechanisms described below are housed in the housing of the vibrator K with the clutch lever 27 exposed, and the contact rod 33 is pivoted to the body C of the vibratory expansion machine.

1 and 2 show the main parts of this invention, including the internal structure of the oscillating device K.

A pulley P2 is fixed to one end of the main drive shaft to which the rotating pendulum Y is fixed, and a belt B is stretched between it and a pulley P1 of a prime mover (not shown) (see Fig. 3).
The main drive gear 3 is fixed to the other end.

On the other hand, a driven gear 5 to be engaged with the main driving gear 3 is loosely fitted onto the driven shaft 13 to which the rotary pendulum X is fixed, and a key-shaped engagement protrusion 7 is fixed to the surface of the driven gear 5.

Further, an ankle-shaped clutch arm 11 is fixed to the driven shaft 13 with a pin 15 so as to be able to swing freely in the axial direction, and the engagement surfaces 12a or 12b at both ends of the clutch arm 11 can be selectively moved as described above by swinging. It is made to engage with the engagement protrusion 7 of the driven gear 5.

In this embodiment, in order to prevent the engagement between the clutch arm and the engagement protrusion from being easily released, the engagement surfaces 12a and 12b of the clutch arm and the engagement surface 9 of the engagement protrusion bite into each other when engaged. It forms a slope like this.

A shifter 17 having a circumferential groove 19 on the driven shaft 13
The shifter 17 has a protrusion 18 pivotally fixed at an eccentric position of the clutch arm 11 with a pin 21, so that the clutch arm swings as the shifter slides.

A pin 24 of a shifter oak 23 is inserted into the circumferential groove 19 of this shifter 17, and this shifter oak is fixed to a rotating shaft 25 supported on the housing of the vibration generator K so as to swing in the axial direction of the driven shaft 13. Furthermore, a clutch lever 27 is fixed to the upper end of this rotating shaft 25, so that the shifter slides as the clutch lever swings.

The above is the explanation of the inside of the oscillating device K.

Next, the structure from the contact rod 33 to the operating lever 39 will be explained.

A rotary shaft 32 having a contact rod 33 and a lever 34 fixed so as to protrude in opposite directions is supported on the body C of the vibratory expansion machine at a position where the end of the contact rod crosses into contact with the clutch lever 27.

Then, by fitting the contact rod 33 into a horizontal hole 30 bored in the base of the rotating shaft 32 via a bush 31 made of an elastic resin such as rubber,
Provides elasticity between the contact rod and the rotating shaft that allows it to ride over the clutch lever.

In this embodiment, the tip of the clutch lever 27 is shaped like a sword, thereby making it easier to overcome this problem.

On the other hand, an operating lever 39 for switching the direction of vibration is pivotally fixed to the H end of the guide handle of the vibrating expansion machine, and this operating lever 39 and the lever 27 of the contact rod are connected via clevises 37 and 35. Connect using the pushable wire 36 (third
(see figure).

The details of the operation of the switching device in this embodiment are as follows.

First, tilt the operating lever 39 forward and press the contact rod 3.
When the clutch lever 27 is rotated in the outward direction of the vibrating expansion machine, the clutch lever 27 is rotated by the pressure of this contact rod.
The shifter 17 slides toward the driven gear 5 by the shifter oak 23, and the clutch arm 11, which is pivoted to the shifter, has its engagement surface 12b approaching the surface of the driven gear 5 and engages the engagement protrusion 7 that has arrived due to the rotation of the driven gear. When engaged, the rotation of the driven gear is transmitted to the driven shaft 13 (state shown in FIG. 4).

The rotation trajectory of the rotating pendulums X and Y in this case is the fifth
As shown in the figure.

In this case, when the rotating pendulum Y faces above the vibrating expansion machine, the rotating pendulum X faces the front of the vibrating expansion machine, and the resultant force Z of the respective inertia forces Y1 and X1 accompanying the rotation of both is: Head diagonally upwards and diagonally backwards of the vibrating expansion machine.

Therefore, the vibrating expansion machine is self-propelled in the forward direction.

Next, when the operating lever 39 is tilted further forward and the contact rod 33 is further rotated toward the outside of the vibrating expansion machine, the contact rod 33 passes over the clutch lever 27 which remains at the maximum rotation angle, and the clutch lever is It will be located on the opposite side.

Therefore, when the operating lever 39 is tilted backward and the contact rod 33 is rotated inward of the vibrating expansion machine, the clutch lever 27 is pressed by the contact rod.
rotates in the opposite direction to the above case, and the shifter 17 slides away from the driven gear 5 by the shifter oak 23, and the clutch arm 11, which is pivoted to the shifter, now has the engagement surface 12a side facing the driven gear 5 surface. When the driven gear approaches 180 degrees, it engages with the arriving engagement protrusion 7, and the rotation of the driven gear is transmitted to the driven shaft 13 (the state shown in FIG. 6).

The rotation trajectory of the rotating pendulums X and Y in this case is the seventh
As shown in the figure.

In this case, when the rotating pendulum Y is facing above the vibrating expansion machine, the rotating pendulum
is facing the rear of the vibrating expansion machine, and the resultant force Z of the inertia forces Y1 and X1 due to the rotation of both is
is toward the front diagonally downward and rearward diagonally upward of the vibrating expansion machine.

Therefore, the vibrating expansion machine will be self-propelled in the backward direction.

G. Effects of the invention According to the vibration direction switching device of this invention constructed as described above, the clutch lever that changes the phase of the rotating pendulum by 180 degrees and the operating lever are not directly connected, but the clutch lever is connected through the contact rod. Since the structure allows the clutch to rotate, the contact rod and clutch lever can be separated once switching has been performed, and as a result, the operating wire will not be affected by the vibration of the vibration generator, preventing accidental damage. This has the effect of preventing the switching state from being released and also preventing the connecting portion of the operating wire from being damaged due to vibration.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of the switching device of this invention, Fig. 2 is an exploded perspective view of the same as above, Fig. 3 is a partially cutaway side view of a vibratory rolling machine implementing the switching device of this invention, and Fig. 4 The figure is a plan view of the main parts of the switching device of this invention in the forward state, FIG. 5 is a side view showing the rotation locus of the rotary pendulum mentioned above, and FIG. , FIG. 7 is a side view showing the rotation trajectory of the rotary pendulum. In the figure, X and Y are rotary pendulums, K is a vibration generator, 1 is a main drive shaft, 3 is a main drive gear, 5 is a driven gear,
7 is an engagement protrusion, 11 is a clutch arm, 13 is a driven shaft, 27 is a clutch lever, 33 is a contact rod, 3
2 is the rotation axis of the contact rod.

Claims (1)

[Claims for Utility Model Registration] 1. In a vibratory expansion machine having an oscillating device attached with two rotary pendulums having eccentric masses with relative phase positions that enable diagonal directional vibrations, the motor is rotated by a power mechanism. One rotating pendulum and main gear are fixed to the main drive shaft which should be given
A driven gear to mesh with this main driving gear is loosely fitted onto the driven shaft to which the other rotating pendulum is to be fixed, and an ankle-shaped clutch arm is fixed to the driven shaft so as to be swung by the clutch lever. ,
An engaging protrusion is provided on the surface of the driven gear so that either end of the clutch arm can be selectively engaged by swinging, and a contact rod is provided to cross-contact with the clutch lever. A vibration direction switching device for a vibratory rolling machine, characterized in that the shaft is fixed to the vibration rolling machine so that it can be swung by connection of an operating wire, and elasticity is provided between the contact rod and the pivot to enable the clutch lever to be overcome. . 2 Scope of utility model registration claim No. 1 where the contact rod is fixed at a location other than the vibration excitation device in the vibratory expansion machine
A vibration direction switching device in the vibrating expansion machine as described in 1. 3. In the vibratory expansion machine according to claim 1 or 2 of the utility model registration claim, in which the engaging surfaces of both ends of the clutch arm and the engaging surface of the engaging protrusion are sloped so that they bite into each other when engaged. Vibration direction switching device. 4. A vibration direction switching device in a vibratory rolling machine according to claim 1, 2, or 3 of the utility model registration claim, in which the tip of the clutch lever is sword-shaped. 5 Request for registration of a utility model as a means of providing elasticity between the contact rod and the shaft so that the clutch lever can be overcome by fitting the contact rod into a horizontal hole drilled in the shaft base via a bush made of elastic resin. A vibration direction switching device in a vibratory expansion machine according to the range 1, 2, 3, or 4.