JP2002188298A - Floor member peeling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor member peeling apparatus for peeling a floor member by fluctuating a blade back and force, which can absorb and mitigate vibrations transmitted to a handle, eliminates vibration generation while maintaining the mechanical performance of the floor material separating apparatus, and minimizes vibrations and noises transmitted to the operator and residents in the vicinity of the construction field, to thereby contribute to environmental improvement. SOLUTION: The floor member peeling apparatus 1 is provided with a handle 2 for pushing a floor member peeling apparatus main body 1, and a rubber pad 4 having a suitable spring constant and being arranged between a handle substrate 3 and a rear surface of the apparatus main body 1. The apparatus which does not generate vibrations is formed of a blade 11 for peeling the floor material A, a blade holding portion 12, a driving plate 13 for making contact with the blade holding portion 12, separating from the same, or abutting on the same, and an even number of rotary eccentric bodies 16 attached to a rotation shaft 17 at right angles along the length of the same. Peripheral surfaces of the rotary eccentric bodies 16 abut on the driving plate 13, and smoothly push the same without generating friction in an eccentrically rotating manner. The device employs an alternating current capacitor activating motor 18 as a power source.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the field of peeling of old flooring materials when replacing flooring materials such as vinyl chloride tiles, linoleum, artificial turf, etc., which are adhered to a floor substrate such as concrete with an adhesive. Device.

[0002]

2. Description of the Related Art When a floor material such as vinyl chloride tile, linoleum, artificial turf and the like adhered on a floor substrate such as concrete, the old floor material must be peeled off.

Various types of apparatuses have been proposed as flooring peeling apparatuses used for such peeling work. For example, a floor material peeling device described in Japanese Utility Model Laid-Open Publication No. 3-33151 discloses a pair of wheels 3 at the rear left and right of a chassis as shown in FIG.
0, and a blade bracket 8 provided with a blade 11 for peeling floor material is provided at the front of the chassis.
The cutting bracket 8 and the cutting tool 11 are swung back and forth through a shaft 9 by a connecting rod 7 connected to a rotary eccentric shaft 6 rotated by the shaft.

There are various types of floor material peeling devices other than those described above. A vibrating blade portion and a vibrating portion are directly connected to a traveling portion via a frame or a link, and the force pressing the floor material peeling device is directly applied. The floor material was peeled off by the pushing force and the vibration of the blade.

[0005] Some of the large-sized flooring peeling apparatuses are self-propelled and are used for riding. There is also an advantage that the weight of the person is added as a force by the front and rear vibrations of the device. In addition, there is a type that reduces the force that the wheel or crawler pushes the human device by self-running while the person presses the floor material peeling device with the handle, but the scale of the device is smaller than the riding type described above. It is getting smaller.

On a smaller scale, the robot does not run on its own, but when peeling the flooring material, an operator grasps the upper part of the handle attached to the rear surface of the flooring peeling device and presses the device with an appropriate force. There is a form to move forward. Even if the chassis is self-propelled, if it is not a passenger, the chassis may meander because the adhesive strength between the floor material and the floor base surface is not uniform,
To prevent this, adjust the direction by pushing the handle, and go straight to peel off the flooring.

[0007] In addition, there is a floor material stripper that swings the blade and the blade holding portion with the size of a hand-held device, but the rotating body that generates the swing and the blade holding portion are not connected by a connecting rod or the like. is there.

[0008]

As described in the prior art, any flooring exfoliating apparatus except for a small hand-held apparatus is rotated by a rotating eccentric shaft in the advancing direction via a connecting rod or the like. The floor material is peeled off by swinging the blade back and forth. At that time, the swing not only causes the blade to swing, but also propagates as vibration throughout the flooring peeling device.
Since the distribution of the impact over the entire length of the cutting edge is not uniform because the hardness of the bonding portion of the floor material is not uniform, the reaction force to the handle is also non-uniform, and the vibration and the reaction force of the impact are transmitted to the handle. This vibration and reaction force is transmitted to the hands, arms and body of the worker holding the handle, and the hands become numb when working for a long time. Decreases work ability and accelerates fatigue.

[0009] Also, the construction environment is such that people are in a room very close to the construction site, or the construction is performed in the same building as an apartment, and noise due to vibration and impact to the floor material bonding portion of the cutting edge. They are sometimes complained that they are big.

According to the present invention, in a floor material peeling device which is pushed and advanced by an operator, vibration of a handle is minimized so that the operator can work for a long time without feeling numbness of his / her hand or arm. It is an object of the present invention to provide a floor material peeling device that dampens a handle and reduces vibration and noise transmitted around a construction site to improve the environment for residents of the same building.

[0011]

According to the first aspect of the present invention,
In order to reduce the vibration of the machine transmitted from the floor material peeling device to the worker via the handle and the reaction force when the blade hits the floor material, select an anti-vibration material with an appropriate elastic modulus between the device body and the handle It is to provide this. Rubber, a coil spring, or the like is used as the vibration isolator. It is characterized in that the force by which the worker presses the floor material peeling device is transmitted to the blade as it is, and only the vibration transmitted from the floor material peeling device body to the handle is absorbed and reduced.

According to a second aspect of the present invention, there is provided an apparatus for separating a floor material by swinging a cutting tool back and forth in a traveling direction, wherein the rotary eccentric body is fixedly mounted on a rotating shaft arranged in parallel with the cutting edge. On the other hand, when the blade holder is inactive, the blade holder presses the adhesive between the floor material and the floor base, and the outer periphery of the rotary eccentric located at the rear of the blade holder holds the blade. The blade holding part is pushed back by directly abutting on the part. Therefore, the rotary eccentric body exerts only a force for pushing the blade forward.

According to a third aspect of the present invention, there is provided a rotary eccentric body for applying a forward impact to a blade via a blade holding portion, wherein the rotary eccentric body has at least a pair of eccentric amounts and weights equal to each other at 180 ° with respect to the center of the rotating shaft. The rotation eccentric body is provided so that the vibrating forces generated in the case of the single rotation eccentric body cancel each other. As a whole, there is no vibration. Also, by attaching and fixing the rotating eccentric body to the rotating shaft in this way,
This is a structure in which at least two impacts are transmitted to the blade and the blade holding portion during one rotation of the rotating shaft, and the same effect as doubling the number of rotations of the motor as the power can be obtained.

According to a fourth aspect of the present invention, furthermore, by providing another pair of the rotational eccentric bodies with the center of the rotational axis being symmetrical, the rotational moment applied to the rotational axis in the direction perpendicular to the rotational axis can be reduced. As zero. According to the present invention, the forward force received by the floor material peeling device is balanced in the left and right directions, and the straight line is maintained without meandering.

The invention according to claim 5 is characterized in that the rotary eccentric body is rotated in a direction perpendicular to the ridgeline of the cutting edge, and hits the portion to be separated between the cutting edge and the floor material via the blade holding portion. It is assumed that. With this mechanism, an arbitrary number of rotational eccentric shafts can be provided along the longitudinal direction of the shaft.

In the case of a rotary eccentric shaft parallel to the ridge line of the blade edge used in the prior art, only one shaft is used, and the eccentric rotary plate that rotates in a plane substantially parallel to the plane of the blade is used to hold the blade holder. There is a type that swings back and forth, but in any case, it can not be provided other than a single eccentric rotating shaft or plate,
It is impossible to balance such that vibration does not occur by itself.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the invention according to the first aspect of the present invention comprises a floor material peeling device main body 1, a handle 2 for pushing the floor material peeling device main body 1, a handle substrate 3 as shown in FIG. Four anti-vibration rubbers 4 are provided between the rear surfaces of the flooring device main body 1,
Both ends of the vibration isolating rubber 4 are fixed to the floor material peeling device main body 1 and the handle substrate 3 by mounting members 5 such as bolts. In the embodiment, the vibration-proof rubber 4 is employed, but a spring having a required spring constant may be used.
The floor material peeling device main body 1 is not limited to
It is sufficient if there is a number that can be pushed by the handle 2.

What is necessary in the first aspect of the present invention is to select the spring constant of the vibration isolation rubber 4. For example, if the floor material peeling device main body 1 is connected to the blade 11 via a connecting rod 7 by a rotary eccentric shaft 6 to swing the blade 11 back and forth, the rotary eccentric shaft 6 As a result, a vibration having a frequency equivalent to the rotation speed is generated. In order to reduce the transmission of this vibration to the handle, an appropriate spring constant is determined.

Specific values are given to determine an appropriate spring constant. For example, the frequency f = 2500 cpm and the vibration transmissibility τ = 0.
05, Load w applied to the steering wheel (human pushing force) = 20k
g, the number of vibration isolating rubbers n = 4. On the other hand, assuming that the spring constant to be obtained is Kc (kg / mm), the relational expression for obtaining Kc is an expression in a book relating to general vibration, and is shown below. τ = | 1 / (1−u ² ) | (1) u = f / fn (2) δ = (945 / fn) ² (3) Kc = P / δ (4) where P is a value per rubber. Load = w / n = 5kg, fn
Is a natural frequency of the system, but is not a numerical value to be obtained in particular here. F = 2500, τ = 0.05 in equations (1) and (2)
And then calculate (3) and (4),
The calculated Kc is 1.67 kg / mm. When a commercially available anti-vibration rubber or the like is used, one having a spring constant closest to this value should be selected.

The structure of the second to fifth embodiments of the present invention will be described with reference to FIG. The floor material peeling device main body 1 includes a blade 11 for peeling the floor material A, a blade holding unit 12, and a blade holding unit 1;
A striking plate 13 that separates from or abuts on the blade 2; a round bar 14 that inscribes and penetrates the blade holding portion 12 and the hole 15 provided in the striking plate 13 to connect the blade holding portion 12 and the striking plate 13; The rotary eccentric 16 is used to press the rear surface of the striking plate 13 forward.
There is. The rotary eccentric body 16 includes an eccentric collar 16a and a bearing 16b inscribed therein. The eccentric collar 16a is mounted and fixed at right angles to the rotating shaft 17. Furthermore, by providing the bearing 16b outside the eccentric collar 16a, the bearing 16b can smoothly push the striking plate 13 while eccentrically rotating without causing friction even when the bearing 16b abuts against the striking plate 13. It has an AC condenser starting motor 18 as a power source and is transmitted to the rotating shaft 17 via pulleys 20 and 21 and a belt 22. A pair of wheels 30 are provided on the left and right at the rear for traveling.

The rotary eccentric body 16 composed of the eccentric collar 16a and the bearing 16b provided on the outer side of the rotary shaft 17 is symmetrically arranged at the center of the length of the rotary shaft 17 by four on one side.
7 is fixed. The procedure for attaching the four rotary eccentric bodies 16 to the rotary shaft will be described with reference to FIG. 1st, 2nd, 3rd, 3rd, and 4th directions outside the center of the length of the rotation shaft 17 (the back surface of the first rotation eccentric body 16 in FIG. 3A).
The rotation eccentric bodies 16 are arranged in the fourth order, and each eccentric direction is set to 0 ° in the rotation direction with respect to the first rotation eccentric body 16. Is 180 °,
The third is 270 ° and the fourth is 90 °.
From the eccentric position 16c are equal. The four rotating eccentric bodies 16 are rotated at such an angle to the rotating shaft 1.
7, the first and second rotary eccentrics, and the third and fourth rotary eccentrics, mutually generate radial force that would otherwise be generated by one rotary eccentric. The forces cancel each other out and the radial force becomes zero as a whole. Therefore, no vibration is generated by the rotating eccentric body.

On the other hand, when the rotation shaft 17 rotates, the outer periphery of the bearing 16b inscribed in the eccentric collar 16a is pushed so as to push the striking plate 13 forward at every 90 °. When the rotary eccentric body is arranged as shown in FIG. 3A, the striking plate 13 contacts the striking plate 13 in the first, third, second, and fourth order. (See FIG. 3B)

Further, since the eccentric collar 16a and the bearing 16b are arranged symmetrically with respect to the center of the rotation axis as shown in the plan view of FIG. 2, the floor material peeling apparatus main body 1 performs rolling and yawing. It is possible to always keep straight ahead without doing. In this embodiment, the rotating shaft 17
The bearing 16b can hit the striking plate 13 four times during one rotation of.

When the switch is turned on in the peeling operation of the floor material A, the eccentric collar 16a at the eccentric position 16c and the bearing 16b inscribed in the eccentric collar 16a are rotated by the motor. Press the handle 2 and set the cutting edge to floor material A
When the impact plate 13 is pressed into the bonding portion of the floor base surface B, the striking plate 13 abutting on the bearing 16b moves forward at a speed four times the rotation speed. Since the handle 2 is pressed, the striking plate 13 is in contact with the blade holder 12 and the blade 11
The same operation is performed, and the cutting edge 11a peels off the floor material A.

FIG. 4 shows the change between one rotation of the amount of swing of the blade in the case of the conventional rotation eccentric shaft alone and the case of the embodiment of the present invention, where the amount of rotation eccentricity is equal. . FIG.
(A) shows that the blade moves forward and backward due to the swing of the conventional blade. FIG. 4B shows that the blade moves only in the forward direction at every rotation angle of 90 ° in the embodiment of the present invention.

The present invention, in which the anti-vibration rubber 4 is mounted between the handle 2 and the floor material peeling device main body 1, is used in the present invention.
This is particularly effective when the swing type is vibration. However, even when the floor material peeling apparatus main body 1 is vibrated by another machine or the like outside the swing of the blade 11, the vibration frequency is predicted or measured. It is effective to select an appropriate anti-vibration rubber and to install it after confirming with the above.

Further, an AC condenser starting motor 18 is used as power, and the motor sound is quieter during operation and idling than in the conventional case.

[0028]

As described in the embodiment of the present invention,
In the floor material peeling device that is pushed by the handle, by providing an anti-vibration rubber between the handle and the floor material peeling device main body, the vibration generated to swing the blade for peeling the floor material back and forth is generated by the worker's hand and body. And the working environment is improved for the worker. Also, by attaching an even number of eccentric rotators to the rotary shaft at an appropriate rotation angle, a floor material peeling operation that does not generate vibration and can apply a forward force only to the blade is provided. The vibration and noise of the living space adjacent to the work site are reduced, and the living environment can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram in which a vibration isolating rubber is provided between a conventional floor material peeling device and a handle.

FIG. 2 is a floor material peeling device according to claims 2 to 5 of the present invention.

FIG. 3 is a diagram showing a state in which an eccentric collar and a bearing are mounted on a rotating shaft.

FIG. 4 is a schematic view showing a swing amount generated by a conventional rotary eccentric shaft and a rotary eccentric body of the present invention.

[Explanation of symbols]

Reference Signs List A floor material B floor base surface 1 floor material peeling device main body 2 handle 3 handle substrate 4 vibration isolating rubber 5 mounting tool 6 rotating eccentric shaft 7 connecting rod 8 blade bracket 11 blade, 11a blade tip 12 blade holder 13 hitting plate 14 round Rod 15 hole 16 Rotational eccentric body, 16a eccentric collar, 16b bearing, 16c eccentric position 17 rotation axis, 17a rotation axis center 18 motor 20 pulley 21 pulley 22 belt 30 wheel

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masaki Kuroyasu F-term (reference) 2E176 AA05 BB23 DD 61

Claims (5)

[Claims] An apparatus for peeling a floor material such as vinylite adhered to a floor base such as concrete by swinging a blade back and forth in the same direction as a traveling direction, wherein a handle portion for pushing the device and swing of the blade are provided. A floor material peeling device, wherein a vibration isolating means is provided between a device body for generating motion. 2. An apparatus for peeling a floor material by a blade swinging back and forth between an adhesive portion between the floor material and a floor base surface in a traveling direction.
A floor material peeling device wherein the rear end side of the blade comes into contact with the outer peripheral surface of the rotary eccentric body when the blade presses the bonding portion, and the blade advances by being driven by the rotary eccentric body. 3. The rotating eccentric body mounted and fixed to the rotating shaft is an even number, and is arranged on the rotating shaft with a phase angle such that vibrations generated in the radial direction of the rotating shaft cancel each other. The floor material peeling device according to claim 2, wherein 4. The floor material peeling apparatus according to claim 2, wherein the rotary eccentric body is mounted and fixed symmetrically with respect to the center of the length of the rotating shaft at the same rotational phase angle. 5. The flooring peeling apparatus according to claim 2, wherein the rotary eccentric body rotates so as to apply a swing from a direction perpendicular to a ridgeline of the cutting edge.