JPH094232A - Traveling equipment such as concrete levelers - Google Patents

Abstract

(57) [Summary] [Purpose] A traveling device such as a concrete leveler that does not disturb the placed concrete even if it is self-propelled on the concrete placing surface, does not damage the bar arrangement, and does not require extra repair work. The purpose is to provide. [Structure] A frame 1 that supports a work tool 2 such as a concrete leveler, a drive shaft 6 and a driven shaft 7 that are pivotally supported on the front and rear portions of the frame 1, and one end fixed to the drive shaft 6. Driver 8, a follower 9 having one end pivotally supported by the driven shaft 7, a response link 12 connecting the other ends of the driver 8 and the follower 9, and the response link 1
2 and a reaction shaft 13 provided at an intermediate position, and the reaction shaft 13 includes a pair of front and rear parallel link mechanisms that linearly move within a range of a constant rotation angle of the drive shaft 6, and the reaction shaft 13 has a grounding piece. The front and rear parts of 14 are pivotally supported to form one unit, and each unit is formed by a number such that the rotation angle of the drive shaft 6 in which the response shaft 13 continues linear movement covers the entire circumference of the drive shaft 6. The driver 8 is provided with the phase thereof shifted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling device suitable for mounting and carrying a working tool such as a concrete leveling machine for leveling a concrete placing surface when constructing a concrete floor surface or the like.

[0002]

2. Description of the Related Art When constructing a concrete floor surface or the like, in order to even out the concrete after placing the concrete into a smooth surface, it has conventionally been done manually with a trowel, but this is not done manually. There are problems that it is efficient, it takes a lot of time and labor, the leveling accuracy is poor, and it is difficult to secure workers.

From the above, in order to automatically level the concrete pouring surface, after the concrete has been poured, the concrete pouring floor surface, such as an endless track, can be set on the concrete pouring floor surface while it is not cured. There is one that makes it possible to level the concrete pouring surface while self-propelled, but according to this, the leveling surface is disturbed by the wheels of the traveling body that runs on the concrete pouring surface, Since the total weight is directly applied to the concrete pouring surface, there is a problem that the reinforcing bars below the concrete pouring surface are bent and damaged.

In order to avoid the above-mentioned problems, rails are laid on both sides of a floor surface on which concrete is to be placed, and traveling beams are provided by engaging wheels with the rails. By supporting a traveling body that travels in a direction orthogonal to the traveling direction and providing a concrete leveling work tool composed of a screw or the like on this traveling body, the traveling body is moved along the traveling beam while the concrete is poured. Level the installation surface,
There is provided a leveling device in which the traveling beam is moved by one pitch and the traveling body is moved again while the traveling beams are sequentially leveled.

[0005]

However, according to the above-described conventional leveling device, the rails for traveling the traveling beams can be laid in advance over the entire length along both sides of the floor surface on which concrete is to be placed. Since it is necessary, it is inevitable that the rails will be left unleveled at the installation site and in the vicinity thereof, and there is a problem in that these sections must be leveled afterwards depending on manual work by the operator.

Further, if the rail is left laid, it hinders the subsequent work. Therefore, the work of dismantling and removing the rail must be carried out in parallel, and the removal marks are manually leveled. Therefore, it is necessary to finish the work and the work that is not directly related to the leveling work is forced. There was a problem that I could not.

In view of the above, the present invention has been made in consideration of the fact that even if a concrete placing surface is self-propelled, it does not disturb the placing concrete, does not damage the bar arrangement, and does not require extra work. It is an object of the present invention to provide a traveling device such as a machine.

[0008]

As a means for solving the above-mentioned problems of the prior art, the present invention provides a frame for supporting a working tool such as a concrete leveler, and a shaft at the front and rear parts of the frame. A supported drive shaft and driven shaft,
A driver having one end fixed to the drive shaft, a follower having one end pivotally supported by the driven shaft, a response link connecting between the other ends of the driver and the follower, and an intermediate position of the response link. And a reaction shaft, and the reaction shaft includes a pair of front and rear parallel link mechanisms that linearly move within a range of a constant rotation angle of the drive shaft, and the front and rear portions of the grounding piece are pivotally supported on the reaction shaft to form one unit. This unit is provided by shifting the phase of the driver of each unit by a number such that the rotation angle of the drive shaft in which the response shaft continues linear movement covers the entire circumference of the drive shaft.

[0009]

The grounding piece of one unit grounds with the rotation of the drive shaft within a predetermined angle range, and linearly moves relative to the frame in a state parallel to the grounding surface. While the unit is grounded, the grounding piece of the other unit is in the raised position and moves forward. After the grounding piece that is grounded is rotated by a predetermined angle of the drive shaft, it is replaced with the grounding piece of the other unit and the grounding piece is grounded. By sequentially performing this, the frame moves forward without moving up and down. To do.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 shows a plan view of an embodiment in which the present invention is applied to a concrete leveling machine, FIG. 2 shows a side view, and FIG. 3 shows a front view. A concrete leveling tool 2 is supported on the rear part of the frame 1.
1, the frame 1 is moved forward without moving up and down in the direction of the white arrow in FIG.

The traveling device 3 is constructed by combining a required number of units shown in FIG. 4 as shown in FIG. 6, and is symmetrically provided on the left and right sides of the frame 1. Therefore, only one side of the traveling device 3 will be described. Then, in one unit, the drive shafts 6 and 6 rotated by the motors 5 and 5 mounted on the front and rear portions of the frame 1 and the driven shafts 7 and 7 separated from the drive shafts 6 are supported on the frame 1 respectively. The drive shafts 6 and 6 have one ends of drivers 8 and 8 fixed thereto, and the driven shafts 7 and 7 have one ends of followers 9 and 9 pivotally supported.

As shown in FIG. 5, the driver 8 is composed of two plates 8a, 8a, and one end of each of the two plates 8a, 8a has a shaft piece 6a, which serves as a drive shaft 6, on its outer surface.
6a is fixed and the other end is integrally connected by a driver shaft 10. In the illustrated embodiment, it is composed of three sets of units as will be described later, and therefore, as shown in FIG.
The individual drivers 8, 8, 8 have the same axis, but are connected to each other by intermittent shaft pieces 6a, 6a to form a substantial drive shaft 6.

The follower 9 also has two plates 9 in the same manner.
a and 9a, which are integrally connected by a follower shaft 11, and the driven shaft 7 is a single shaft that penetrates in the illustrated embodiment.

The other ends of the driver 8 and follower 9 are connected by response links 12, 12 pivotally supported by the driver shaft 10 and follower shaft 11. At the intermediate position between the reaction links 12 and 12, the reaction shafts 13 and 13 are provided.
The upper ends of leg pieces 14a, 14a rising to both ends of a grounding piece 14 formed in a substantially U shape by a plate member are pivotally supported on the response shafts 13, 13 to form one unit.

In principle, the parallel link mechanism constituted by the above-mentioned members applies a link mechanism for performing "an approximate parallel motion of watts". The principle of motion is shown in FIG.
With reference to the schematic diagram shown in,

[0017]

[Equation 1] And in the figure

[0018]

[Equation 2] When is rotated by 120 degrees, the response shaft 13 draws an approximate straight line as shown by the locus A.

In the illustrated embodiment, the response shaft 13 is the drive shaft 6.
It is located slightly lower than the line connecting the axis of the driven shaft 7 and the driven shaft 7, but this is lowered because of the relationship with other members.
There is no substantial effect on the linear movement. In the illustrated embodiment, the driver 1
The reaction shaft 13 is adapted to perform a linear motion within a range of a rotation angle of 20 degrees. As shown in FIGS.
In order to cover the entire circumference of, the drivers 8, 8, 8 of the three sets of units on one side are phase-shifted by 120 degrees and are fixed to the drive shaft 6. Therefore, if the rotation angle of the driver 8 for the linear movement of the response shaft 13 is 90 degrees, four units may be provided on each side.

In the above embodiment, the drive shafts 6, 6 ... Are driven by different motors 5, 5 ,.
.. may be driven by transmitting rotation from each (or one on each side) motor to each drive shaft 6, 6, ... Through a transmission mechanism such as a chain.

The concrete leveling tool 2 is generally known, and the construction thereof will be briefly described. Cylinders 16 and 16 are supported in an upright posture via an arm 15 at the rear end of the frame 1 in the traveling direction. A concrete leveling tool body 17 is suspended from the rods of the cylinders 16, 16.

A screw 18 is axially supported by the leveling tool body 17 in a direction orthogonal to the traveling direction of the traveling device 3, and the screw is rotated by a motor through a transmission mechanism in a transmission case 19 to drive the screw 18. The concrete on the concrete surface is evenly leveled and the excess concrete is removed to the side.

A leveling plate 20 spaced apart from the screw 18
Is hung from the leveling tool body 17, and the leveling plate 20 is vertically vibrated by a vibrating device 21 to tap the concrete for flattening. The leveling tool 2 is not limited to the one shown in the figure,
An appropriate work tool can be attached to the frame 1 for use.

Reference numeral 22 is a leveling trowel, 23 is a pole for supporting a target for level confirmation, 24 is a grounding leg for grounding and turning the frame 1 when changing direction, and 25 is a box for its driving equipment.

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

The grounding piece 14 of one unit is grounded, and the grounding piece 14 makes a linear motion in parallel with the grounding surface in the range of the rotation of the drive shaft 6 by 120 degrees, and the frame 1 relatively advances by the stroke. . At this time, the positions of the drive shaft 6 and the response shaft 13 are at the highest position. Therefore, the grounding piece 14 that is moving linearly always comes into contact with the ground, and the grounding pieces 14 and 14 of the other unit are moved to the front while being placed at a position separated upward from the grounding surface.

The grounding piece 14 that is grounded is 12 of the drive shaft 6.
It rises at 0 degree rotation, at which time the grounding piece 1 of the next unit
4 is grounded, and as the drive shaft 6 is continuously rotated, the grounding pieces 14, 14 are sequentially grounded, whereby the frame 1 is moved forward without being vertically displaced, and the concrete leveling tool 2 is used to level the concrete. Work is done.

[0028]

As described above, according to the present invention, when a work tool such as a concrete leveling machine is attached to the holder member to perform work on the concrete placing surface, the work piece can be walked by the grounding piece. However, it does not vertically move the work tool, and smoothing and finishing work can be performed without inconvenience in leveling the concrete placing surface, and because the grounding piece grounds the load, the load is distributed and It is easy to repair without damaging it and without leaving large running traces such as those caused by wheels or endless tracks.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment in which the present invention is suitable for a concrete leveling machine.

FIG. 2 is a side view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a side view showing one unit of the traveling apparatus according to the present invention.

FIG. 5 is a partial plan view of the same.

6 is a side view showing an assembled state when three units of the unit of FIG. 4 are used.

FIG. 7 is a plan view of the same.

FIG. 8 is an explanatory view showing the operation of the unit of FIG.

[Explanation of symbols]

 1 frame 2 concrete leveling tool 3 traveling device 5 motor 6 drive shaft 6a shaft piece 7 driven shaft 8 driver 9 follower 10 driver shaft 11 follower shaft 12 reaction ring 13 response shaft 14 grounding piece 15 arm 16 cylinder 17 17 concrete leveling tool main body 18 screw 20 leveling plate

Claims (1)

[Claims] 1. A frame for supporting a work implement such as a concrete leveler, a drive shaft and a driven shaft axially supported by front and rear portions of the frame, and a driver having one end fixed to the drive shaft. The follower has one end pivotally supported by the driven shaft, a response link connecting between the other ends of the driver and the follower, and a response shaft provided at an intermediate position of the response link. A pair of front and rear parallel link mechanisms that linearly move within a range of a constant rotation angle of the drive shaft are provided, and the front and rear portions of the grounding piece are pivotally supported on the reaction shaft to form one unit. A traveling device such as a concrete leveling machine, characterized in that the driving angle of the drive shaft for continuing the movement is provided such that the phase of the driver of each unit is shifted by a number that covers the entire circumference of the drive shaft.