JP2003328553A - Smoothing disk device in trowel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smoothing disk in a trowel installable in either of a 4-piece type trowel regular machine and a 3-piece type trowel regular machine in a hand type trowel, and installable even in a riding type trowel regular machine via an adapter. <P>SOLUTION: A smoothing disk has a first kind of claw piece engageably- disengageably locked on at least a plurality of blades in a hand type trowel regular machine having four arms, and a second kind of claw piece engageably- disengageably locked on at least a plurality of blades in a hand type trowel regular machine having three arms. The adapter opens a locking hole for inserting and locking the first kind of claw piece and the second kind of claw piece in a state of superposing the smoothing disk on an under surface of the adapter, and has a locking means engageably-disengageably locked on at least the plurality of blades in the riding type trowel regular machine on an upper surface of the adapter. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a smoothing disk device for performing "unevenness removal" by attaching to a trowel for earth finishing when applying earth with mortar.

[0002]

2. Description of the Related Art It has been conventionally known to use a trowel to smooth the surface of soil during mortar coating.

As such a trowel, a hand type trowel in which an operator works while walking and a riding type trowel in which an operator works while riding on a self-propelled vehicle are known.

The hand type trowel is provided with a group of radial arms extending at equal intervals in a circumferential direction on a vertical axis driven and rotated by a driving source, and a long handle is provided for a driving device having blades on each arm. This type of hand-type trowel configures the machine, and the worker holds the handle to adjust the surface of the dirt floor by the blade that rotates with the arm, and walks with the hand-type trowel to perform the work. At this time, there are two types of conventional hand-type trowels, a three-type trowel with a drive unit having three arms and a four-type trowel with a drive unit having four arms.

On the other hand, the riding type trowel has a group of four arms radially extending at equal intervals in the circumferential direction on the vertical axis driven and rotated by a driving source, and a driving device having blades on each arm. This is a riding-type Trowell machine, in which the stands are arranged in a row in the lateral direction and the seats are mounted on the frame of a tower. Therefore, the worker makes the riding trowel self-propelled by getting on the seat, and works while accustoming the surface of the dirt floor by the blade rotating with the arm.

By the way, in such a trowel, a smoothing disc is attached as an attachment before the finishing work by "pressing" the soil surface with a blade, and a preliminary work by "clearing" the soil surface with the disc is performed. Are known. As disclosed in Japanese Utility Model Publication No. 62-33863, the smoothing disk is attached so as to cover the lower side of the arm group in the hand type trowel, and is provided with a claw piece that is detachably locked to the blade. .

[0007]

As described above, in the case of the hand type trowel, the three-type trowel in which the driving device has three arms and the four-type trowel in which the driving device has four arms are provided. There are two types. For this reason, conventional smoothing discs are provided with claw pieces at three locations so that they can be attached to a three-row trowel and those with four nail pieces provided at four locations so that they can be attached to a four-row trowel. Each is provided.

However, since the smoothing disc provided with the claw pieces at three places is dedicated to the three-piece Trowell,
It cannot be attached to a four-row trowel. Similarly,
Since the smoothing disc provided with the claw pieces at four locations is dedicated to the four-row trowel, it cannot be attached to the three-row trowel. That is, the smoothing discs are not compatible between the three-row trowel and the four-row trowel, which is very inconvenient for an operator who purchases and uses a plurality of trowels.

On the other hand, the riding type trowel is unified so that the number of arms of the driving device is common to all models as described above, and the driving device is provided with four arms. Then, in order to take advantage of the advantage that two drive devices are connected in series, usually, the rotational loci of the blades in the drive devices connected left and right are made to overlap each other (overlap structure). ing. At this time, the two drive devices connected in series have the same rotational speed on the vertical axis, and therefore, the blades of the adjacent drive devices are synchronously rotated so that the blades do not interfere with each other. There is.

However, in such an overlap structure, when it is attempted to attach the smoothing discs so as to completely cover the respective blade groups with respect to the two driving devices connected in series, the left and right smoothing discs are Since they interfere with each other, as a result, in the past,
It is recognized that a smoothing disc cannot be installed.

[0011]

SUMMARY OF THE INVENTION The present invention provides a smoothing disk device which solves the above-mentioned problems. The first means of the smoothing disk device is that the circumference of a vertical axis is driven and rotated by a drive source. A hand-type trowel equipped with a radial arm group that extends at equal intervals in each direction and a drive unit equipped with a blade for each arm. In the smoothing disc provided with the claw pieces to be locked, the smoothing disc is a first-type claw piece that is detachably locked to at least a plurality of blades in a hand-type trowel machine having four arms. A hand-type trowel having three arms, and a second-type pawl that is releasably engaged with at least a plurality of blades of the machine. There is a point.

Further, the present invention is configured as a second means in that in the smoothing disk device as described in the first means, the longitudinal axis driven and rotated by the drive source is equidistant in the circumferential direction. A group of four riding arms that have four arms extending radially and each of the arms is equipped with a blade and two driving devices are connected in a lateral direction. It is a configuration that covers the side and is provided with an adapter that is detachably locked to the blade, and the adapter is a state in which a smoothing disc is superposed on the lower surface of the adapter,
A locking hole for inserting and locking the first-type claw piece and the second-type claw piece is provided, and the locking is removably locked to at least a plurality of blades of the drive device on the upper surface of the adapter. The point is that it comprises means.

Further, the third aspect of the present invention is the smoothing disk device as described in the second aspect, which is two driving devices connected to the riding type Trowell main unit. In the configuration in which the rotation loci of the blades in FIG. 3 are overlapped with each other, the diameter D1 of the adapter and the diameter D2 of the smoothing disk are
Is D>D2> D for the diameter D of the rotation locus of the blade.
In addition, the two sets of the adapter and the smoothing disk respectively attached to the two driving devices are configured so as not to interfere with each other.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

(Structure of smoothing disk device for hand-type trowel) As shown in FIG. 1, the hand-type trowel main unit 1 has a vertical axis which is driven and rotated by a drive source 2 such as an engine, with equal intervals in the circumferential direction. A drive device 5 having a radially extending arm group 3 and a blade 4 provided on each arm 3, and a base frame frame having a turret shape with respect to an annular base frame 6 along the rotation trajectory of the blade group 4. A drive frame 5 is supported via a handle frame 8 extending from the base frame 7.
Such a configuration is conventionally known, and when applying the soil with mortar, the operator holds the handle 8a, and while the blade 4 rotating with the arm 3 adjusts the surface of the soil by "pressing", Type Trowell Work is performed by walking with the main unit 1.

As mentioned above, the hand-type trowel is shown in FIG.
The four arms 3a, 3b, 3c, 3 as shown in FIG.
4 type Trowell machine 1 in which the driving device 5 is constituted by d
A and three arms 3e, 3 as shown in FIG.
Two types are known and commercially available, such as a three-row Trowell main unit 1B in which the driving device 5 is composed of f and 3g. Therefore, the four-row Trowel machine 1A is provided with blades 4a, 4b, 4c, and 4d on four arms 3a, 3b, 3c, and 3d arranged at equal intervals in the circumferential direction. The trowel main unit 1B has three arms 3e, 3f, 3g arranged at equal intervals in the circumferential direction and blades 4e, 4
f and 4g are provided.

Therefore, according to the present invention, there is provided a smoothing disk 9 which can be attached to any of the four-type Trowell main unit 1A and the three-type Trowell main unit 1B. As described above, the smoothing disk 9 is attached so as to cover the lower side of the blade group 4 as an attachment before the finishing work by "pressing" the surface of the soil by the rotating blade group 4, and is rotated. The purpose is to carry out a preliminary work for finishing by removing unevenness on the soil surface.

In the embodiment shown in FIG. 1, the smoothing disc 9 is provided with an annular wall 10b which is erected so as to spread upward on the peripheral edge of the flat disc portion 10a, and the upper surface of the disc portion 10a. Is provided with a claw piece group 11 extending substantially radially. In the illustrated example, the claw piece group 11 includes six claw pieces 11a, 11b, 11c, 11d, 11e, 11
1C, each of the claw pieces is composed of
As shown in FIG. 5, a fixed portion 12 fixed to the upper surface of the disc portion 10a by welding or the like, a bent portion 13 standing upright from the fixed portion 12, and a parallel portion from the bent portion 13 to the disc portion 10a. A claw portion 14 bent so as to extend in the direction is provided, and a locking groove 15 is formed between the claw portion 14 and the disc portion 10a. The locking groove 15 is opened so as to face the rotation direction R of the blade 4. Therefore, by inserting the side edge of the blade 4 facing the rotation direction R into the locking groove 15, the locking groove 15 can be attached to and detached from the blade 4. And the smoothing disk 9 is rotated integrally with the blade 4.

The nail piece group 11 composed of six nail pieces is
As shown in FIG. 1A, the smoothing disc 9 is set to 4
When mounting on the two-piece Trowell main unit 1A provided with the arm 3 of the book, the claw pieces 11a, 11b, 11d, 11f are used.
The first type of claw piece is constituted by the four blades 4a, 4b, 4c, 4d of the drive device 5 for each claw piece.
It is configured to engage and disengage. On the other hand, as shown in FIG. 1 (B), a smoothing disc 9 is provided with three arms 3 and is a triple-type Trowell unit 1B.
When mounting on, the claw pieces 11a, 11c, 11e constitute a second type of claw piece, and the three blades 4e, 4f, 4g of the drive device 5 are detachably engaged with each claw piece. It is configured to stop.

Therefore, one type of smoothing disk 9
However, it can be attached to both the four-type Trowell main unit 1A and the three-type Trowell main unit 1B. In addition, in the illustrated embodiment, the first type is formed by the four claw pieces 11a, 11b, 11d, and 11f that are locked to all of the four blades 4a, 4b, 4c, and 4d in the four-type Trowell main unit 1A. 3B type Trowel machine 1B
The three types of claw pieces 11a, 11c, and 11e that are locked to all the three blades 4e, 4f, and 4g in FIG.
It is not essential to provide as many claw pieces as the number of blades in any of the present type Trowell main unit 1B, and a plurality of claw pieces to be engaged with at least a plurality of blades 4 are required. 11 should be provided.

(Structure of smoothing disk device for riding type trowel) As shown in FIG. 2, this riding type trowel main unit 1C has two driving devices 5a and 5b connected in a lateral direction, each driving. The devices 5a and 5b include four arms 3a, 3b, 3c, and 3d that extend radially at equal intervals in the circumferential direction on a vertical axis that is driven and rotated by a drive source (not shown) such as an engine. Blades 4a, 4b, 4c, 4d are provided on each arm, and a base frame 6c formed in a substantially oval shape that includes the rotation locus of the blade group 4 in the two driving devices 5a, 5b is used for the tower. The base frame 7 is provided with the base frame 7c.
The seat 16 is mounted on c. Although not shown, a drive source such as an engine is mounted on the lower side of the base frame 7c and drives and rotates the two drive devices 5a and 5b via a transmission means such as a chain. At this time, the blade group 4 in the two driving devices 5a and 5b arranged in series is
The loci of rotation of the blades 4 are overlapped with each other.
Are configured so that they do not interfere with each other. Such a configuration is known in the related art, and when applying the soil with mortar, the operator rides on the seat 16 to allow the riding type Trowell main unit 1C to self-propel, and the drive devices 5a, 5b connected in series. Finishing work is performed while accommodating the surface of the soil by "pressing" by the blade group 4 driven and rotated by.

Therefore, according to the present invention, the above-mentioned hand type trowel (four-type trowel main units 1A and 3) is used.
The smoothing disc 9 that can be attached to the present type Trowell main unit 1B) can be directly attached to the riding type Trowell main unit 1C, and the adapter 1 for this purpose is used.
7 is provided. The smoothing disc 9 is shown in FIG.
Based on the above, the configuration is as described above.

The adapter 17 is composed of discs having diameters which do not interfere with each other when attached to the two driving devices 5a and 5b connected in series, and the smoothing disc 9
Is fitted in the annular wall 10b of the above and is superposed on the upper surface of the disc portion 10a. Therefore, when the diameter of the adapter 17 is D1, the diameter of the smoothing disk 9 is D2, and the diameter of the rotation locus of the blade group 4 is D, D>D2> D
It is configured to be 1.

The adapter 17 includes all the claw pieces 11a, 11b, 11c, 11d, 11e, which form the claw pieces of the first type and the claw pieces of the second type in the smoothing disk 9.
Locking holes 18a, 18b, 18 for inserting and locking 11f
c, 18d, 18e, and 18f are opened, and FIG.
As shown in (B), the adapter 17 and the smoothing disk 9 can be integrated by detachably inserting and locking the claw pieces 11 in the corresponding locking holes 18. At this time, as shown in the drawing, it is preferable to provide a lower thick portion 19 that bulges from the central portion of the adapter 17 to the lower surface, and to support this on the upper surface of the smoothing disk 9.

Further, on the upper surface of the adapter 17, locking means which is releasably locked to the four blades 4a, 4b, 4c, 4d of the respective drive devices 5a, 5b of the riding type Trowell main unit 1C. 20a, 20b, 20c, 20
In the illustrated example, each locking means is provided with a rib extending substantially parallel to each side of the upper thick part 21 forming a square such as a square that bulges from the central portion of the adapter 17 to the upper surface. Each rib has a locking hole 18a, 1
It is arranged at a position where it does not interfere with 8b, 18c, 18d, 18e and 18f.

Therefore, when the adapter 17 is arranged below the blade group 4 in each of the driving devices 5a and 5b with the smoothing disc 9 attached and integrated,
The rib group receives the side edge of the driven blade group 4 facing the rotation direction, so that the smoothing disk 9 can be driven and rotated via the adapter 17. Therefore, before the finishing work by "pressing" the soil surface by the blade group 4, by mounting the smoothing disk 9 via the adapter 17, it is possible to perform the preliminary work for finishing the unevenness of the soil surface.

In the case of the illustrated example, the locking means 20a, 20b, 20c, 20d of the adapter 17 are formed by ribs made of square material, but the ribs 11 are formed on the ribs. Blade group 4
It is preferable to form a groove into which the side edge facing in the rotation direction is inserted. Also, the four blades 4a, 4b, 4c,
4 locking means 20a, 20b, 20 corresponding to 4d
It is not essential to provide c and 20d, and it is sufficient to provide a plurality of locking means 20 that are locked to at least a plurality of blades 4.

[0028]

According to the present invention, the smoothing disc 9 can be attached to any of the four-type trowel main unit 1A and the three-type trowel main unit 1B in the hand type trowel, and the smoothing disc 9 is provided via the adapter 17. Thus, there is an effect that it can be attached to the riding type Trowell main unit 1C.

[Brief description of drawings]

FIG. 1 shows an embodiment of a smoothing disc in a smoothing disc device according to the present invention,
(A) is a perspective view of a hand-type trowel attached to a 4-type trowel unit, (B) is a perspective view of a hand-type trowel attached to a 3-type trowel unit, and (C) is a perspective view. FIG. 7 is a cross-sectional view showing the locking portion of the blade and smoothing disc of the Trowell main unit.

2A and 2B show an embodiment of an adapter and a smoothing disc in a smoothing disc device according to the present invention, where FIG. 2A is a perspective view when mounted on a riding type Trowell unit, and FIG. 2B is an adapter and smoothing. It is sectional drawing which shows the locking part of a disc.

[Explanation of symbols]

1A hand type 4 type trowel machine 1B hand-type three-piece trowel machine 1C riding type Trowell machine 3 (3a-3g) arm 4 (4a-4g) blade 5 (5, 5a, 5b) drive device 9 Smoothing disc 11 (11a-11f) claw pieces 17 Adapter 18 (18a-18f) Locking hole 20 (20a to 20d) Locking means

Claims (3)

[Claims] 1. A hand-type Trowell book provided with a radial arm group 3 extending at equal intervals in a circumferential direction on a vertical axis which is driven and rotated by a drive source and provided with a drive device 5 having blades 4 on each arm. Claw piece 1 that covers the lower side of the arm group with respect to the machine and is detachably locked to the blade
In the smoothing disc 9 provided with 1, the smoothing disc 9 is a claw piece 11a of a first type that is detachably engaged with at least a plurality of blades 4 in the hand-type Trowell main unit 1A having four arms.
11b, 11d, and 11f, and a second-type claw piece 11a that is detachably engaged with at least a plurality of blades 4 in the hand-type Trowell main unit 1B including three arms.
A smoothing disk device in Trowell, comprising: 11c and 11e. 2. The smoothing disk device according to claim 1, further comprising a group of four arms extending radially at equal intervals in a circumferential direction on a vertical axis driven and rotated by a drive source, and each arm has a blade. 4a, 4b, 4c, 4
For the riding type trowel main unit 1C in which two driving devices 5a and 5b provided with d are connected in a lateral direction, the lower side of the arm group in each of the soil driving devices 5a and 5b is covered and detachable from the blade. The adapter 17 is provided to be locked to the adapter 17. The adapter 17 has the smoothing disc 9 superposed on the lower surface of the adapter 17 so that the claw piece 11 of the first type is
a, 11b, 11d, 11f and the second kind of claw piece 11a,
Locking holes 18a, 18 for inserting and locking 11c, 11e
b, 18c, 18d, 18e, 18f are provided, and locking means 20a, 20b, 20c, 20d that are releasably locked to at least a plurality of blades 4 of the drive device are provided on the upper surface of the adapter. A smoothing disk device in Trowell, which is characterized in that 3. The smoothing disk device according to claim 2, wherein the rotational trajectories of the blades 4 in the two drive devices 5a and 5b connected to the riding type Trowell main unit 1C are made to overlap each other. In this configuration, the diameter D1 of the adapter 17 and the smoothing disc 9
The diameter D2 of the blade 4 is
D>D2> D1, and two drive devices 5a,
A smoothing disk device in Trowell, characterized in that two sets of an adapter 17 and a smoothing disk 9 respectively mounted on 5b are constructed so as not to interfere with each other.