JP2001348809A - Vibrating compacting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely adjust tension of a double-sided toothed belt of a phase switching mechanism for switching phases of an exciter with a simple structure. SOLUTION: This vibrating compacting machine has a driving shaft for inputting motive power via a V belt and a driving pulley from a prime mover and a driven shaft arranged in parallel to this driving shaft, respectively arranging eccentric pendulums on these two shafts and advancing-retreating a machine body by converting the mutual phases of the eccentric pendulums in synchronous rotation of these two shafts. In this machine, an idler pulley support plate having a pair of upper and lower idler pulleys is rockably arranged in the machine body longitudinal direction via the shafts, the double-sided toothed belt is extended to the respective toothed pulleys arranged on the two shafts via the idler pulleys, the two shafts are mutually reversely rotated and are constituted so as to convert the mutual phases of the eccentric pendulums of the two shafts by rocking of the idler pulley support plate, and a toothed belt tension adjusting device is arranged on the idler pulley support plate for adjusting the tension of the double-sided toothed belt extended to the respective toothed pulleys arranged on the two shafts via the idler pulleys to proper tensile force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention travels by freely changing the longitudinal direction of an airframe by rotating two parallel axes in opposite directions and changing the phase of an eccentric pendulum provided on the two axes. The present invention relates to a vibration compaction machine that can be used.

[0002]

2. Description of the Related Art A conventional vibration compaction machine of this type is provided with, for example, eccentric pendulums whose mounting angles are each phase-shifted by 90 ° on a pair of parallel shafts, and which are interlocked via gears.
The eccentric pendulum of the shaft is rotated in the opposite direction, and the combined force when the oscillating forces of both eccentric pendulums coincide obliquely upward and downward, advance the aircraft in one of the front and rear directions. By switching the phase of one of the eccentric pendulums by 180 ° by the above operation, the aircraft is made to advance in the opposite direction.

As means for switching the phase of one of the eccentric pendulums, a gear for transmitting a rotational force to one of the eccentric pendulum shafts is provided with a hook for operating the rotation angle of the pendulum shaft from outside. The phase is shifted by 180 ° by the removing means. (June 58-17768
Reference).

[0004]

However, in such a conventional vibration compacting machine, two parallel shafts each provided with an eccentric pendulum are interlocked by gear transmission, and the phase of the eccentric pendulum is disengaged from the pawl. Since the switching is performed by the means, the impact force is generated due to the change of the claws every time the forward / backward switching is performed, and there is a problem that the damage of the body is accelerated.

Therefore, the applicant of the present invention provided eccentric pendulums on two axes provided in parallel, and changed the mutual phase of the eccentric pendulums during the synchronous rotation of these two axes so as to move the body forward and backward. In the vibration compaction machine, a floating pulley support plate having a vertically integrated floating pulley is provided so as to be swingable in the longitudinal direction of the machine body, and each toothed pulley provided on the two shafts via the floating pulley has a double-sided toothed belt. , And the two axes are rotated in opposite directions to each other, and the mutual phase of the eccentric pendulum of the two axes is changed by the swing of the floating pulley support plate. are doing. (Patent No. 1946349)

The present invention relates to an improvement of the above-mentioned vibration compaction machine, and more particularly relates to a vibration compaction machine which can surely adjust the tension of a double-sided toothed belt of a phase switching mechanism for switching the phase of a vibrator with a simple structure. For the purpose of providing.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a first aspect of the present invention provides a drive shaft for inputting power from a prime mover via a V-belt and a drive pulley, and a drive shaft provided in parallel with the drive shaft. An eccentric pendulum is provided on each of these two axes, and the phase of the eccentric pendulum is changed during the synchronous rotation of these two axes to move the body forward and backward. , An idler pulley support plate having a pair of upper and lower idler pulleys is provided so as to be swingable in the longitudinal direction of the machine via a shaft, and each toothed pulley double-sided toothed belt provided on the two shafts via the idler pulley is provided. The two axes are rotated in opposite directions to each other, and the mutual phases of the eccentric pendulums of the two axes are changed by the swinging of the floating pulley support plate. Characterized in that a toothed belt tensioning means for adjusting the tension of the double-sided toothed belt wound around the respective toothed pulleys on the shaft in the proper tension.

[0008] Therefore, the tension of the double-sided toothed belt can be adjusted to an appropriate tension by the toothed belt tension adjusting means, and switching between forward and backward can be smoothly performed.

According to a second aspect of the present invention, in the vibration compaction machine according to the first aspect, the toothed belt tension adjusting means is provided with an eccentric collar on at least one of the floating pulleys, and supports the eccentric collar. The tension of the toothed belt is adjusted by rotating the shaft with respect to the shaft.

Accordingly, the tension of the double-sided toothed belt can be adjusted to an appropriate tension by a simple operation of merely moving the position of the eccentric collar with respect to the support shaft.

According to a third aspect of the present invention, there is provided the vibration compaction machine according to the first aspect, wherein the toothed belt tension adjusting means is provided with a guide groove in the front-rear direction of the body on the floating pulley support plate. An engaging portion slidably engaging the guide groove is provided on the shaft, and the tension of the toothed belt is adjusted by moving the floating pulley support plate in the longitudinal direction of the body with respect to the shaft. It is characterized by.

Accordingly, the tension of the double-sided toothed belt can be adjusted to an appropriate tension by a simple operation of merely moving the floating pulley support plate with respect to the shaft in the longitudinal direction of the body.

According to a fourth aspect of the present invention, there is provided the vibration compacting machine according to the first or second or third aspect, wherein the driving pulley is fitted on a driving shaft, and has a tapered collar having a tapered portion on one side surface; A taper collar having the tapered portion and a pulley main body having a tapered recess which is detachable from the tapered portion, wherein the pulley main body is fixed to the drive shaft via the tapered collar.

Therefore, the V-belt can be easily replaced by disengaging the tapered recess of the pulley body from the drive shaft by disengaging the tapered portion of the tapered collar.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway right side view showing a configuration of a vibration compaction machine according to one embodiment of the present invention, and FIG. 2 is a view showing a configuration of the vibration compaction machine according to one embodiment of the present invention. FIG. 3 is a cross-sectional view showing a configuration of the vibration generating device provided on the body and a phase switching mechanism of the vibration generating device when viewed from a plane, FIG.
FIG. 3 is a side view showing a configuration of a phase switching mechanism of the vibration generator.

As shown in FIGS. 1 and 2, the vibration compaction machine is supported via a vibration generator 2 fixed on a rolling compaction plate 1, an engine stand support frame 3 and a vibration-proof rubber 4. An engine table 5, a prime mover 6 mounted on the engine table 5, and a phase switching mechanism 7 for switching the phase of the vibrating device 2
And an operation handle 8 extending obliquely rearward from the engine stand 5.

Power is transmitted from the prime mover 6 to the drive shaft 16 of the vibration generator 2 via the centrifugal clutch 9, the V-belt 10 and the drive pulley 11, and the travel lever 13 provided on the operation handle 8 through the control cable 14. By operating the switching arm 43 of the phase switching mechanism 7, the body is moved forward and backward (including neutral, the same applies hereinafter).

As shown in FIG. 3, the exciter 2 has a drive shaft 16 and a driven shaft 17 which are parallel to each other, and are rotatably provided on a case 18 via bearings 19 respectively.

An eccentric pendulum 20 is integrally fixed to the drive shaft 16 in the case 18, and a pulley 21 with teeth is fixed to one end and a drive pulley 11 is fixed to the other end.

An eccentric pendulum 22 is integrally fixed to the driven shaft 17 in the case 18, and a toothed pulley 23 is fixed to one end side.

As shown in FIGS. 3 to 5, the phase switching mechanism 7 is provided with a shaft 24 parallel to the drive shaft 16 and the driven shaft 17 in the case 18 so as to be rotatable. The pulley support plate 25 is integrally fixed and supported so as to be swingable in the longitudinal direction of the fuselage.

The floating pulley support plate 25 is provided with a pair of upper and lower toothed pulleys 26 and 27 rotatably about a shaft 24.

One of the toothed pulleys 26 (in this embodiment, the upper toothed pulley) is provided with an eccentric collar 29 and a bearing 30 on a support shaft 28 provided integrally with a floating pulley support plate 25 in parallel with the shaft 24. It is rotatably supported via.

The other toothed pulley 27 (in this embodiment, the lower toothed pulley) has a bearing 32 on a support shaft 31 provided integrally with a floating pulley support plate 25 in parallel with the shaft 24. It is rotatably supported.

The double-sided toothed belt 3 is interposed between the toothed pulley 21 of the drive shaft 16 and the toothed pulley 23 of the driven shaft 17 via toothed pulleys 26 and 27 which are idle pulleys.
3 is wound around as shown in FIGS.

Therefore, the drive shaft 16 and the driven shaft 17 rotate in opposite directions to each other as shown in FIG.

The eccentric collar 29 constitutes a toothed belt tension adjusting means 34 for adjusting the tension of the double-sided toothed belt 33.

Next, a connection structure between the floating pulley support plate 25 and the control cable 14 will be described with reference to FIG.

A bracket 35 is fixed to the shaft 24 of the floating pulley support plate 25 by a key 36 and bolts 37, and a rubber coupling 38 as a buffer is attached to the bracket 35 by bolts 39.

On the other hand, a bracket 40
Is attached to the bracket 40 by means of a bolt 41. A shaft 42, which is arranged concentrically with the shaft 24 of the floating pulley support plate 25, is rotatably provided on the bracket 40.
The switching arm 43 is integrally fixed and supported so as to be swingable in the longitudinal direction of the fuselage.

A rubber coupling 44 as a buffer is attached to the switching arm 43 by a bolt 45. The rubber coupling 44 is connected to the rubber coupling 38 on the floating pulley support plate 25 side via a coupling shaft 46.

The other end of the control cable 14 having one end connected to the traveling lever 13 is connected to the switching arm 43.

Therefore, by rotating the traveling lever 13 in the longitudinal direction of the machine body, the switching arm 43 is pivoted in the longitudinal direction about the shaft 42 via the control cable 14, and the pivoting of the switching arm 43 is performed. As a result, the floating pulley support plate 25 is swung in the longitudinal direction of the machine via the rubber coupling 44, the coupling shaft 46, the rubber coupling 38, the bracket 35, and the shaft 24.

FIGS. 6A and 6B show the driving pulley 11.
2 shows the state of attachment.

The drive pulley 11 comprises a pulley body 47 and a tapered collar 48. The pulley body 47 is mounted on the drive shaft 16 by bolts 49 and 50 via the tapered collar 48.

The pulley body 47 has a V-shaped groove 47a on the outer periphery, and a tapered recess 53 capable of engaging and disengaging the tapered portion 52 of the tapered collar 48 is formed on one side surface of the rib portion 51.

The tapered collar 48 has a tapered hole 54 fitted into the tapered shaft portion 16a at the end of the drive shaft 16, and a tapered portion 52 is formed on the outer end side.

The tapered collar 48 is attached to the drive shaft 16 by fitting the tapered hole 54 of the tapered collar 48 into the tapered shaft portion 16a of the drive shaft 16, and the tapered portion 52 of the tapered collar 48 is Recess 5
3 is engaged with the pulley body 4 by a plurality of bolts 49.
The drive pulley 11 is fixed to the drive shaft 16 by fastening the pulley body 47 to the drive shaft 16 by fastening the pulley body 7 to the taper collar 48 and the bolt 50.

Next, the operation of the above embodiment will be described.

The rotation from the prime mover 6 is applied to the centrifugal clutch 9
When transmitted to the drive shaft 16 via the belt 10 and the drive pulley 11, the driven shaft 17
Is rotated around the toothed pulley 21 of the drive shaft 16 and the toothed pulley 23 of the driven shaft 17 via a pair of toothed pulleys 26 and 27 which are idle pulleys. The drive shaft 16 and the driven shaft 17 rotate in the directions opposite to each other in the direction of the arrow, and both the eccentric pendulums 20 and 22 rotate synchronously in the direction of the arrow in the state shown in FIG.

When the traveling lever 13 is rotated forward from this state, the switching arm 43 is swung forward via the control cable 14, and the floating pulley support plate 25 is moved by the rubber coupling 44 in conjunction with the swing. , Coupling shaft 46, rubber coupling 38, bracket 35
And is pivoted forward (in the direction of arrow A shown in FIG. 8) via the shaft 24. The swing of the floating pulley support plate 25 causes the driven shaft 17 to rotate 90 ° via the double-sided toothed belt 33 and the toothed pulley 23, whereby the eccentric pendulum 22 is phased from the state of FIG. The state shown in FIG.

In this state, that is, in the state shown in FIG. 8, when both the eccentric pendulums 20 and 22 rotate in the direction of the arrow, the body advances while compacting the ground.

FIG. 9 shows a state in which the aircraft is switched to reverse after continuing to advance. That is, the traveling lever 13
Is pivoted rearward, the switching arm 43 is pivoted rearward via the control cable 14, and in conjunction with this pivoting, the floating pulley support plate 25 moves the rubber coupling 44,
It is swung rearward (in the direction of arrow B shown in FIG. 9) via the coupling shaft 46, the rubber coupling 38, the bracket 35, and the shaft 24. Due to the swing of the floating pulley support plate 25, the driven shaft 17 is phase-shifted by 180 ° via the double-sided toothed belt 33 and the toothed pulley 23 to be in a state shown in FIG. In this state, that is, in the state shown in FIG. 9, when both the eccentric pendulums 20 and 22 rotate in the direction of the arrow, the body moves backward while compacting the ground.

As described above, the operation of switching the forward / backward movement of the body is performed by the double-toothed belt 33 by the eccentric pendulum 22 of the driven shaft 17.
Of the drive shaft 1 through a pair of toothed pulleys 26 and 27 which are floating pulleys.
6 toothed pulley 21 and driven shaft 17 toothed pulley 23
It is necessary to tension the double-sided toothed belt 33 to be wound around with appropriate tension.

According to the present embodiment, since the eccentric collar 29 is provided on one of the toothed pulleys 26 which are floating pulleys, the double-sided toothed belt 33 is connected to the toothed pulleys 21, 23, 26 and 27. FIG. 10 (a)
The eccentric part 29a (thick part) of the eccentric collar 29 as shown in FIG.
Is positioned close to the toothed pulley 23 side of the driven shaft 17 (to the left in FIG. 10A), and is wound around each toothed pulley 21, 23, 26, 27 with the double-sided toothed belt 33 loosened. After setting, the eccentric collar 29 is moved to
As shown in (b), the eccentric portion 29a is positioned away from the toothed pulley 23 of the driven shaft 17.

In this manner, the double-sided toothed belt 33 can be tensioned with an appropriate tension.

In this embodiment, the eccentric collar 29 is provided on one of the toothed pulleys 26, but may be provided on both of the toothed pulleys 26 and 27.

Further, the drive shaft 1 of the vibrating device 2 from the prime mover 6
The V-belt 10, which transmits power to the V-belt 6, is a consumable item and needs to be replaced when its life has expired due to wear or the like.

According to this embodiment, the drive pulley 11 is formed by the pulley body 47 and the tapered collar 48, and the pulley body 47 is mounted on the drive shaft 16 via the tapered collar 48. 9
When the V belt 10 is stretched between the drive belt 11 and the drive pulley 11, as shown in FIGS. 11A and 11B, the bolt 49 for fastening the pulley body 47 to the tapered collar 48 is opposed to the centrifugal clutch 9. After loosening one recent bolt 49 and extracting the other bolt 49 and the bolt 50 fastened to the drive shaft 16, the tapered recess 53 of the pulley body 47 is removed.
Is disengaged from the tapered portion 52 of the tapered collar 48,
The pulley body 47 is rotated via the bolt 49 to approach the centrifugal clutch 9 side.

In this state, the V-belt 10 is hung between the centrifugal clutch 9 and the pulley main body 47, and the pulley main body 47 is rotated via the bolt 49 to engage the tapered recess 53 with the tapered portion 52 of the tapered collar 48. , Bolts 49 and 5
0, the centrifugal clutch 9 and the drive pulley 1
A V-belt 10 can be stretched between the two.

Accordingly, the V-belt can be changed easily and easily without requiring a special tool such as a pulley pulling tool.

FIGS. 12A and 12B show another embodiment of the toothed belt tension adjusting means. The same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

The toothed belt tension adjusting means 34A of this embodiment is provided with a guide groove 53 in the front-rear direction of the body on the floating pulley support plate 25, and a pair of right and left for inserting a bolt 54 into a portion corresponding to the guide groove 53. The long hole 55 is formed.

On the other hand, the guide groove 5 is provided at the end of the shaft 24.
An engaging portion 56 that slidably engages the third member 3 is integrally provided.

Then, the engaging portion 56 of the shaft 24 is engaged with the guide groove 53 of the floating pulley supporting plate 25 and fastened by the bolt 54 through the elongated hole 55, so that the floating pulley supporting plate 25 is attached to the shaft 24. It is fixed.

According to the present embodiment, the double-sided toothed belt 3
When the hook 3 is wound around the toothed pulleys 21, 23, 26, and 27, the bolt 54 is loosened and the floating pulley support plate 25 is moved forward with respect to the shaft 24 via the guide groove 53, and the teeth of the driven shaft 17 are rotated. The pulleys 21 and 2 with the double-sided toothed belt 33 loosened.
After having been hung around 3, 26 and 27, the floating pulley support plate 25 is moved rearward with respect to the shaft 24 to be positioned away from the toothed pulley 23 of the driven shaft 17, and the bolt 5
4 is concluded.

By doing so, the double-sided toothed belt 33 can be tensioned with an appropriate tension.

FIGS. 13A and 13B show a modified side of another embodiment of the toothed belt tension adjusting means. The same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The toothed belt tension adjusting means 34B includes:
The floating pulley support plate 25 is divided into a toothed pulley 26 side and a toothed pulley 27 side, and guide grooves 57 and 58 in the longitudinal direction of the machine body to be engaged with each other are provided.
A pair of left and right long holes 60 through which bolts 59 are inserted are formed in the floating pulley support plate 25 on the side of the toothed pulley 26 corresponding to the parts 7 and 58, while the floating pulley support plate 25 on the side of the toothed pulley 27 is It is integrally fixed to the end of the shaft 24.

The floating pulley support plate 25 is fixed to the shaft 24 by engaging the guide grooves 57 and 58 with each other and tightening the bolts 59 through the long holes 60.

According to the present embodiment, the double-sided toothed belt 3
When the belt 3 is wound around the toothed belt pulleys 21, 23, 26, and 27, the bolt 59 is loosened and the floating pulley support plate 25 on the toothed pulley 26 is moved forward with respect to the shaft 24 through the guide grooves 57 and 58. The driven shaft 17 is positioned closer to the toothed pulley 23 side of the driven shaft 17, and is wound around each of the toothed pulleys 21, 23, 26, 27 in a state where the double-sided toothed belt 33 is loosened, and The floating pulley support plate 25 on the pulley 26 side is moved rearward with respect to the shaft 24 to
7 and the bolt 59 is fastened again.

By doing so, the double-sided toothed belt 33 can be tensioned with an appropriate tension.

[0064]

As is apparent from the above description, according to the first aspect of the present invention, the provision of the toothed belt tension adjusting means enables the tension of the double-sided toothed belt to be adjusted to an appropriate tension. The switching between forward and backward can be smoothly performed.

According to the second aspect of the present invention, the tension of the double-sided toothed belt can be adjusted to an appropriate tension by a simple operation of merely moving the position of the eccentric collar with respect to the support shaft.

According to the third aspect of the present invention, the tension of the double-sided toothed belt can be adjusted to an appropriate tension by a simple operation of moving the floating pulley support plate with respect to the shaft in the longitudinal direction of the machine. .

According to the fourth aspect of the present invention, since the engagement between the tapered recess of the pulley main body and the tapered portion of the tapered collar can be released from the drive shaft, the V-belt can be easily replaced. .

[Brief description of the drawings]

FIG. 1 is a partially cutaway right side view showing the entire structure of a vibration compaction machine according to an embodiment of the present invention.

FIG. 2 is a partially cutaway left side view showing the entire structure of the vibration compaction machine according to one embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating a configuration of a vibrating device and a phase switching mechanism provided in the body when viewed from a plane.

FIG. 4 is a side view showing a configuration of a phase switching mechanism of the vibration generating device.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6A is a side view showing an attached state of a driving pulley. FIG. 7B is a sectional view taken along line BB of FIG.

FIG. 7 is a diagram illustrating the operation of the phase switching mechanism.

FIG. 8 is an operation explanatory view of a phase switching mechanism.

FIG. 9 is a diagram illustrating the operation of the phase switching mechanism.

FIG. 10 (a) is an operation explanatory view of a toothed belt tension adjusting means. (B) is an operation explanatory view of the toothed belt tension adjusting means.

FIG. 11A is an explanatory diagram of a belt changing operation of a driving pulley. (B) It is an explanatory view of belt change operation of a drive pulley.

FIG. 12 (a) is a side view showing a toothed belt tension adjusting means according to another embodiment. FIG. 13 (b) is a sectional view taken along line CC of FIG. 12 (a).

FIG. 13 (a) is a side view showing a toothed belt tension adjusting means according to a modified side of another embodiment. 13B is a sectional view taken along line DD of FIG.

[Explanation of symbols]

 Reference Signs List 2 Exciting device 6 Primer 7 Phase switching mechanism 10 V-belt 11 Drive pulley 16 Drive shaft 17 Driven shaft 20 Eccentric pendulum 21 Toothed pulley 22 Eccentric pendulum 23 ... Toothed pulley 24 ... Shaft 25: floating pulley support plate 26: toothed pulley (floating pulley) 27: toothed pulley (floating pulley) 28 ... support shaft 29 ... eccentric collar 33 ... double-sided toothed belt 34 ... toothed belt tension adjusting means 34A: toothed Belt tension adjusting means 34B ... toothed belt tension adjusting means 47 ... pulley body 48 ... taper collar 53 ... guide groove 55 ... long hole 56 ... engaging portion 57 ... guide groove 58 ... guide groove 60 ... long hole

Claims (4)

[Claims] An eccentric pendulum is provided on each of the two shafts, a drive shaft for inputting power from a prime mover via a V-belt and a drive pulley, and a driven shaft provided in parallel with the drive shaft. In a vibration compacting machine in which the phase of the eccentric pendulum is changed during the synchronous rotation of these two shafts to move the body back and forth, the body is moved through a floating pulley support plate having a pair of upper and lower floating pulleys via a shaft. The two-axis toothed belts are wrapped around the respective toothed pulleys provided on the two shafts via the floating pulleys, and the two shafts are rotated in opposite directions to each other to swing the floating pulley support plate. The two-axis eccentric pendulum is configured to change the mutual phase with each other by movement, and a double-sided toothed belt wound around each toothed pulley provided on the two axes via the idler pulley on the idler pulley support plate. Vibrating compactor characterized in that a toothed belt tensioning means for adjusting the tension of the bets in the proper tension. 2. A vibration compaction machine according to claim 1, wherein said belt-like tension adjusting means is provided with an eccentric collar on at least one of said floating pulleys, and rotates said eccentric collar with respect to a support shaft. A vibration compacting machine characterized in that the tension of the toothed belt is adjusted by moving it. 3. A vibration compaction machine according to claim 1, wherein said toothed belt tension adjusting means provides a guide groove in the longitudinal direction of the machine body on said floating pulley support plate, and said guide groove on a shaft. The vibration is characterized in that an engaging portion is slidably engaged with the shaft and the tension of the toothed belt is adjusted by moving the floating pulley support plate in the longitudinal direction of the body with respect to the shaft. Compaction machine. 4. A vibration compaction machine according to claim 1, wherein said drive pulley is fitted to a drive shaft and has a tapered collar having a tapered portion on one side surface, and said drive pulley has a tapered portion. A vibration compaction machine, comprising: a pulley body having a detachable tapered recess, wherein the pulley body is fixed to a drive shaft via a tapered collar.