JP2002054303A - Back pressure type engine vibrator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply change the direction of a vibrating cylinder vibrating while being interlocked with the rotation of a flexible shaft connected to a back pressure type engine and turned to a handle section installed to a cylinder shaft covering the flexible shaft and gripped by one hand. SOLUTION: The back pressure type engine vibrator is constituted in such a manner that the first holding section 5 mounted at the front end section of the cylinder shaft 2 with the handle section 2a covering the flexible shaft 1 connected to the backing type engine and revolved and the second holding section 9, to which the base end section of the vibrating cylinder 12 vibrated by the turn of the flexible shaft 1 is secured, are joined in a mutually rotatable and fixable manner. To be concrete, the back pressure type engine vibrator is configured so that the angles of rotation of the first holding section 5 and the second holding section 9 can be fixed when a plate-shaped bracket 5a with an arcuate opening 5b is formed to the first holding section 5 and a tapped hole 14a at the front end section of a clamping-rod combining handle 14 set up to the second holding section 9 is screwed and clamped to a screw shaft 13 slidable along the opening 5b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backpack type engine vibrator used for compaction of concrete when driving concrete in civil engineering works. More specifically, the present invention relates to a vibrating cylinder inserted into the driven concrete. The angle is easily changed to improve the workability.

[0002]

2. Description of the Related Art A conventional backpack type engine vibrator is:
Generally, most of the flexible shafts are provided with a vibrating tube at the tip of the flexible shaft. However, if it is necessary to work the vibrating tube directly below, bend the flexible shaft greatly. I needed to.

[0003]

However, in the conventional backpack type engine vibrator, when the flexible shaft is bent greatly, a load is applied to the flexible shaft portion, which shortens the life and causes a failure.

The handle of a vibrator for compacting concrete is generally provided near the base of a vibrating tube attached to the tip of a flexible shaft. At the work site where the flexible shaft was bent greatly and the vibrating cylinder was pointed directly below, this was a cause of fatigue.

The present invention has been made in view of the above problems, and has as its object to provide a backpack-type engine vibrator in which the angle of the vibrating cylinder can be easily adjusted with one hand.

[0006]

In order to achieve the above object, a first aspect of the present invention is a handle portion 2a for covering a flexible shaft 1 which rotates in connection with a backpack type engine.
The first holding unit 5 attached to the distal end of the cylindrical shaft 2 having the above, and the second holding unit 9 attached to the base end of the vibrating cylinder 12 that vibrates by the rotation of the flexible shaft 1 are attached to each other. A backpack type engine vibrator characterized in that it is rotatably and fixedly joined.

According to a second aspect of the present invention, a flat bracket 5a having an arc-shaped opening 5b is formed in the first holding portion 5, and a screw shaft slidable along the opening 5b. 13 is screwed into the screw hole 14a at the distal end of the fastening rod / handle 14 attached to the second holding part 9 to tighten the first holding part 5 and the second holding part 9 together. 2. A backpack type engine vibrator according to claim 1, wherein the backrest type engine vibrator is configured to be fixed at a desired rotation angle.

According to a third aspect of the present invention, a first gear mechanism attached to the tip of the flexible shaft 1 is built in the first holding portion 5, and the first gear mechanism is mounted in the second holding portion 9. Is the vibration cylinder 1 meshing with the first gear mechanism.
3. A backpack type engine vibrator according to claim 1 or 2, wherein a second gear mechanism connected to a rotating shaft 10 for vibrating the second gear 2 is incorporated.

With such a backpack type engine vibrator, the tightening rod / handle 14 is turned and loosened, and the second holding part 9 having the vibration cylinder 12 attached to the first holding part 5 is turned. After the movement, the vibration rod 12 can be fixed at a desired angle by rotating and tightening the tightening rod / handle 14.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a backpack type engine vibrator according to the present invention will be described below in detail with reference to the drawings. FIG. 1A is a perspective view of a case where the work is performed by fixing the vibrating tube at a substantially right angle with respect to a handle portion grasped by one hand (right hand), and FIG. FIG. 9 is a perspective view in the case where the work is performed with the vibrating cylinder fixed and oriented substantially linearly.

As shown in FIGS. 1 and 2, the invention according to claim 1 is a handle portion 2a which covers a flexible shaft 1 which rotates while being connected to a backpack type engine (not shown).
The second holding unit 9 to which the base end of the vibrating tube 12 that vibrates by the rotation of the flexible shaft 1 is attached to the first holding unit 5 attached to the distal end of the cylindrical shaft 2 having A backpack type engine vibrator is constituted so as to be rotatable and fixable.

With this construction, as shown in FIG. 1A, the vibration cylinder 12 is connected to the handle 2a.
Can be used at a substantially right angle, that is, facing downward, and as shown in FIG. 1 (b), the vibrating cylinder 12 is substantially straight with respect to the handle portion 2a. Can be used.

According to a second aspect of the present invention, a flat bracket 5a having an arc-shaped opening 5b is formed in the first holding portion 5, and a screw shaft slidable along the opening 5b. 13 is screwed into the screw hole 14a at the distal end of the fastening rod / handle 14 attached to the second holding part 9 to tighten the first holding part 5 and the second holding part 9 together. 2. A backpack type engine vibrator according to claim 1, wherein the backrest type engine vibrator is configured to be fixed at a desired rotation angle. The shaft screw shaft 13 is provided such that the inside of the head 13a slides outside the opening 5b.

With this construction, as shown in FIG. 1A, the vibration tube 12 is fixed to the handle portion 2a of the tube shaft 2 at a substantially right angle, that is, so as to face downward. To do so, the tightening rod / handle 14 is turned by the left hand so as to be loosened, the vibrating tube 12 is turned downward, and then the tightening rod / handle 14 is turned and fixed.

According to a third aspect of the present invention, a first gear mechanism attached to the tip of the flexible shaft 1 is built in the first holding section 5, and the first gear mechanism is mounted in the second holding section 9. Is the vibration cylinder 1 meshing with the first gear mechanism.
3. A backpack type engine vibrator according to claim 1 or 2, wherein a second gear mechanism connected to a rotating shaft 10 for vibrating the second gear 2 is incorporated.

In the embodiment shown in FIG. 2, the first gear mechanism is a first umbrella attached to the tip of a connecting shaft 1 'connected to the tip of the flexible shaft 1 via a spline shaft 1a. A gear 3 and a second bevel gear 4 meshed with the first bevel gear 3 such that the first holding mechanism (first gear case) 5 covers the first gear mechanism. Is provided.

In the embodiment shown in FIG. 2, the second gear mechanism includes a third bevel gear 7 attached to an end of a rotating shaft 6 to which the second bevel gear 4 is attached. ,
A fourth bevel gear 8 meshed with the third bevel gear 7 and attached to the end of the rotating shaft 10 connected to the vibration rotating shaft 10 '. A portion (second gear case) 9 is provided so as to cover.

With such a configuration, the vibrating cylinder 12 held by the second holding portion 9 is substantially perpendicular to the handle portion 2a of the cylindrical shaft 2 held by the first holding portion 5. The flexible shaft 1
Can be transmitted to the rotating shaft 10 and the vibration rotating shaft 10 ′, and by rotating the eccentric rotating body 15 attached to the tip of the vibration rotating shaft 10 ′,
The vibration cylinder 12 that covers the vibration rotation shaft 10 ′ and the eccentric rotator 15 vibrates.

A pointed member 16 as a lid is attached to the tip of the vibrating cylinder 12. Also, reference numeral 1
Reference numeral 7 denotes a bearing. Reference numeral 18 denotes a screw knob which is loosened when the vibrator head H is removed from the cylindrical shaft 2. Reference numeral 19 denotes a throttle for adjusting the rotation speed of the engine when the engine vibrator is used. It is a lever.

[0020]

The backpack type engine vibrator according to the first to third aspects of the present invention is constructed as described above. Therefore, the backing type engine vibrator is provided with the tightening rod provided on the second holding portion holding the vibrating tube. Turn the handle to loosen it, and easily change the vibrating cylinder held in the second holding part to a desired angle with respect to the first holding part holding the cylindrical body having the handle part covering the flexible shaft. Because the flexible shaft can be used, the flexible shaft can be constantly compacted so as not to bend too much, and the concrete can be compacted by turning the vibrating tube to a desired angle.Therefore, no load is applied to the flexible shaft. Long life can be achieved. Furthermore, even if the angle of the vibrating cylinder is changed, since the posture can be changed without changing the posture, the work can be performed comfortably by grasping both the handle and the tightening rod and the handle, so that the fatigue of the operator can be reduced. There is.

[Brief description of the drawings]

FIG. 1 is a perspective view in which a vibrating cylinder of a backpack type engine vibrator according to the present invention is used at a desired angle.

FIG. 2 is a sectional view of a backpack type engine vibrator according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexible shaft 1 'Connection shaft 1a Spline shaft 2 Cylindrical shaft 2a Handle part 3 First bevel gear 4 Second bevel gear 5 First holding part 5a Flat bracket 5b Arc-shaped opening 6 Rotating shaft 7 Third 8 bevel gear 8 fourth bevel gear 9 second holding unit 10 rotating shaft 10 ′ vibrating rotating shaft 11 spring joint 12 vibrating cylinder 13 screw shaft 13 a head 14 fastening rod and handle 14 a screw hole 15 eccentric rotating body 16 point Head member 17 Bearing 18 Screw knob 19 Throttle lever H Vibrator head

Claims (3)

[Claims] A first holding portion attached to a distal end portion of a cylindrical shaft having a handle portion for covering a flexible shaft which rotates while being connected to a backpack type engine; and a base of a vibrating cylinder vibrated by rotation of the flexible shaft. A backpack type engine vibrator characterized in that a second holding portion to which an end is attached is joined so as to be rotatable and fixed to each other. 2. A flat bracket having an arc-shaped opening is formed in said first holding portion, and a fastening shaft attached to said second holding portion is attached to a screw shaft slidable along said opening. The first holding portion and the second holding portion can be fixed at a desired rotation angle by screwing and tightening a screw hole at a distal end portion of the attached rod / handle. Item 7. A backpack type engine vibrator according to Item 1. A first gear mechanism attached to a distal end of the flexible shaft in the first holding section; and the vibration mechanism meshing with the first gear mechanism in the second holding section. 3. The backpack type engine vibrator according to claim 1, further comprising a second gear mechanism connected to a rotating shaft for vibrating the cylinder.