JPH0242825Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Industrial Application Field) This invention is used to replace sheet-like flooring materials such as polyvinyl chloride tiles, linoleum, and carpets that are pasted with adhesive on concrete or board floorboards. The present invention relates to a flooring stripping machine for stripping during flooring. (Prior art) As a floor material stripping machine, Japanese Utility Model Publication No. 15548/1983,
Utility Model Publication No. 55-15549 and Utility Model Publication No. 55-15551, etc. have a hand handle at the rear and one on each side.
A blade plate for removing flooring material is protruded forward and downward from the front end of a cart frame equipped with a pair of wheels, and this blade plate is swung back and forth by a motor drive, and the tip of the blade plate is used to peel off the flooring material. Disclosed is a method in which the material is peeled off. Furthermore, Japanese Patent Application Laid-Open No. 60-59262 discloses a device in which a pair of left and right blade plates protrudes forward and downward from the front end of a truck frame, and the pair of left and right blade plates are opposed in the width direction and reciprocate. something is disclosed. (Problem to be solved by the invention) A flooring peeling machine in which the blade plate is swung back and forth uses the forward impact that accompanies the back and forth oscillation of the blade plate to remove the gap between the flooring material and the floor base. Since the flooring material is removed by crushing the adhesive, if the adhesive is a hard adhesive such as an epoxy resin, the flooring material can be removed efficiently, but on the other hand, the reaction force of the impact mentioned above The impact is large, placing a heavy burden on the worker's arm, and if a soft adhesive such as a vinyl acetate resin solution is used as the adhesive, the effectiveness of the impact will be reduced, resulting in a drop in efficiency. was. On the other hand, a flooring peeling machine that has a pair of left and right blade plates facing each other in the width direction and reciprocating cuts the adhesive by reciprocating the cutting edge in the width direction at the tip of the blade plate. When the above-mentioned soft adhesive is used as an adhesive, the flooring material can be removed efficiently by cutting the adhesive, and the impact is small, but hard adhesives such as epoxy resin can be used as an adhesive. If adhesive was used, cutting the adhesive was difficult and very inefficient. This invention provides a flooring stripping machine that can efficiently strip flooring even when either the above-mentioned soft adhesive or hard adhesive is used, and that causes less impact. (Means for solving the problem) A blade plate 6 for peeling flooring, which slopes downward toward the front, is provided at the front end of the chassis frame 1, which is equipped with a push handle 4 and a pair of left and right wheels 3 at the rear. A pair of left and right blade support plates 5, which are long in the front and back direction, are supported so as to be slidable in the front, rear, left and right directions. Eccentric cams 18 symmetrically eccentric with respect to the chassis center line N are fixed to the lower ends of a pair of left and right vertical rotating shafts 15 connected to each other and supported above the central portions of the left and right blade support plates 5. An eccentric cam 18 as a lever is rotatably connected to the center of the blade support plate 5, and the left and right vertical rotation shafts 18 are rotated in opposite directions by transmission from a motor fixed to the upper part of the chassis frame 1. Rotate. (Operation) When the motor on the chassis frame 1 is driven, the left and right eccentric cams 18 rotate in opposite directions due to the power transmitted from the motor. As the eccentric cam 18 rotates, the left and right blade support plates 5 swing back and forth and left and right, but since the rear end of the blade support plate 5 is only allowed to move linearly in the front and back direction, the blade plate Support plate 5
The front end, that is, the blade plate 6 performs an elliptical rotational movement that is the circular movement of the eccentric cam 18 expanded in the width direction.
Therefore, when the tip of the blade plate 6 is pressed against the joint between the floor stand and the surface flooring material, the blade plate 6 applies a blow and a cutting action to the joint as it rotates in an oval shape,
The above-mentioned surface flooring material is peeled off by the combined action.
In this case, the left and right eccentric cams 18
Since they are symmetrically eccentric with respect to each other and rotate in opposite directions, the reaction forces in the width direction cancel each other out. Note that when the left eccentric cam 18 is rotated clockwise and the right eccentric cam 18 is rotated counterclockwise, the left and right blade plates 6 move toward the center in the first half of their rotational locus, respectively. Vibrations are reduced. In addition, the distance from the connection point 25 at the rear end of the blade plate support plate 5 to the tip of the blade plate 6 is set to 2 to 4 times the distance from the connection point 25 to the central eccentric cam 18, that is, the distance from the path of the blade plate 6. In the oval S, it is preferable to set the length of the long axis in the width direction to 2 to 4 times the length of the short axis in the front-rear direction, and if the length is less than 2 times, the surface flooring material will not be used if the adhesive is soft. The peeling speed of
When it exceeds 4 times, the peeling speed decreases when the adhesive is hard. (Example) In FIG. 3, 1 is a chassis frame, 2 is a motor cover, 3 is a rear wheel, 4 is a hand handle, and a pair of left and right blade plate support plates 5, 5 are attached from the front end of the chassis frame 1. The tip of a trapezoidal blade plate 6 for floor material stripping which is protruded and fixed in a forward downward direction at the tip comes into contact with the floor surface. In addition, 7 is a guide plate for preventing the peeled surface floor material from entering between the blade support plate 5 and the truck frame 1, and is fixed to the vehicle chassis frame 1. In FIGS. 1 and 2, the blade support plate 5 is made long in the front-rear direction and consists of a wide front half whose width is approximately equal to that of the blade plate 6, and a rear half whose width is approximately half that of the blade plate 6. , a ball bearing 9 is attached via a metal fitting 8 slightly behind the center of the front and back, a circular contact plate 10 is fixed to the right and left slightly in front of the ball bearing 9, and a pair of left and right guide plates 11, 11 are fixed near the rear end. is fixed, and the guide groove 11a in the front and rear direction is fixed by its opposing surface.
is formed. On the other hand, the upper plate 1a of the chassis frame 1
Four roller casters 12 are fixed in one row in the width direction on the lower surface of the front end of the blade (see Fig. 2), and the spherical roller 12a at the lower end of the roller caster 12 is mounted on the upper surface of the contact plate 10 on the blade support plate 5. get on. In addition, a stay 13 that is long in the width direction is supported between the left and right side plates 1b, 1b of the chassis frame 1 so as to be located behind the roller caster 12, and a downward arm 13a that projects downward from the center of the stay 13 is attached to a stay 13 that is long in the width direction. The center portions of a pair of upper and lower horizontal roller shafts 14, 14 are fixed in the width direction, and guide rollers 14a are attached to both ends of the upper and lower horizontal roller shafts 14, respectively. The rear half of the plate support plate 5 is clamped. That is,
The blade support plate 5 is supported by the guide roller 14a and the roller caster 12 so as to be movable back and forth and left and right. Upper and lower bearing cases 16 and 17 have a pair of left and right vertical rotating shafts 15 and 15 fixed to the chassis frame 1 between the roller caster 12 and the stay 13.
A disk-shaped disk is rotatably supported by ball bearings 16a and 17a fixed to these bearing cases 16 and 17, and is integrally formed with an eccentric amount d at the lower end of the vertical rotation shaft 15. Eccentric cam 18
is fitted into the inner ring of a ball bearing 9 attached to the center of the blade support plate 5, and is rotatably connected to the blade support plate 5. The left and right vertical rotation shafts 15,
15, spur gears 19, which mesh with each other,
19 is fixed, and a driving pulley 20 is fixed to the upper part of one vertical rotation shaft 15 (lower side in FIG. 1).
An endless belt 23 is wound around this driving pulley 20 and a motor pulley 22 fixed to a motor shaft 21 of a motor (not shown) placed above the chassis frame 1, and when the motor is driven, , the vertical rotation shaft 15 on the left side (lower side in FIG. 1) is rotated clockwise, and the vertical rotation shaft 15 on the right side is rotated counterclockwise. A pair of left and right guide wheels 25, 25 are attached to a vertical roller shaft 25 on a widthwise bar 24 supported slightly behind the stay 13.
This guide ring 2 is rotatably attached via a.
5 is fitted into the guide groove 11a at the rear end of the blade support plate 5 so as to be slidable back and forth. In the above structure, the eccentricity of the eccentric cam 18 is set to 2 mm, the distance between the vertical roller shaft 25a and the vertical rotation shaft 15 is set to 150 mm, and the vertical roller shaft 25a is set to 150 mm.
The distance between the blade plate 6 and the tip of the blade plate 6 was set to 395 mm, and the tip of the blade plate 6 was given an oval rotational motion (short axis length 4 mm, long axis length 10.5 mm), and a weight was suspended from one end. The other end of the lowered string was fixed to the undercarriage frame 1, the undercarriage frame 1 was urged forward, and the peeling speed of the 30 cm wide plastic tile (surface floor material) adhered to the floor base was measured. On the other hand, eccentric cam 1
Comparative Example 1 is one in which the direction of the ball bearing 9 is changed to give a reciprocating motion of 4 mm only in the front-rear direction. A similar peeling test was conducted as Comparative Example 2, in which a long hole was formed and the rear end of the blade support plate 5 was pinned to give the tip of the blade plate 6 a reciprocating movement of 10.5 mm only in the width direction. I did it. The results of this peel test are shown in the table below.

[Table] In other words, the example showed excellent peeling performance for both a vinyl acetate solution-type soft adhesive and an epoxy-based hard adhesive, whereas Comparative Example 1 showed excellent peeling performance for both a vinyl acetate solution-type soft adhesive and an epoxy-based hard adhesive, whereas was low, and Comparative Example 2 was almost impossible to peel off from the hard adhesive. In the above-mentioned embodiment, the tip of the blade plate 6 is formed into a gentle arc shape or into a sawtooth shape, and the guide ring 25 and the guide groove 11a at the rear end of the blade support plate 5 are Of course, modifications such as replacing the mounting position can be made. (Effect of the invention) This invention rotates a pair of left and right blade plates into long oval shapes in the width direction, so it can be used when the surface flooring is glued with either soft or hard adhesive. It is also possible to efficiently remove surface flooring materials. Therefore, in houses and other buildings, hard epoxy adhesives are used on the first floor and below, where humidity is high, and soft adhesives such as vinyl acetate solution are used on the second floor and above, where humidity is low. There is no need to prepare two types of flooring stripping machines even if there are multiple flooring strippers.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the main part of the embodiment of this invention (cross-sectional view taken along the - line in Fig. 2), Fig. 2 is a longitudinal sectional view of Fig. 1, and Fig. 3 is an overall perspective view of the embodiment. . 1... Vehicle chassis frame, 3... Wheels, 4... Hand handle, 5... Blade plate support plate, 6... Blade plate, 8
...Metal fitting, 9...Ball bearing, 11...Guide plate, 1
1a... Guide groove, 15... Vertical rotation axis, 18...
Eccentric cam, 19... Spur gear, 20... Driving pulley, 21... Motor shaft, 22... Endless belt, 2
5... Guide wheel.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A front and rear truck frame equipped with a push handle and a pair of left and right wheels at the rear, and a front end equipped with a blade plate for peeling flooring that slopes downward toward the front, near the front of the trolley frame. A pair of left and right blade support plates that are long in the direction are supported so as to be slidable in the front, rear, left and right directions, and the respective rear ends of the left and right blade support plates are connected to the chassis frame so as to be slidable in the front and rear. Eccentric cams that are symmetrically eccentric with respect to the chassis center line are fixed to the lower ends of a pair of left and right vertical rotating shafts supported above each central portion of the blade support plates, and these eccentric cams are connected to the blade support plates. A flooring stripping machine rotatably connected to a central portion of the chassis frame, the left and right vertical rotation shafts being rotated in opposite directions by transmission from a motor fixed to the upper part of the chassis frame. (2) The flooring stripping machine according to claim 1, wherein the left vertical rotation shaft rotates clockwise and the right vertical rotation shaft rotates in the reversing direction. (3) The distance from the connection point at the rear end of the blade plate support plate to the tip of the blade tip is set to 2 to 4 times the distance from the connection point to the eccentric cam, as claimed in item 1 or Floor material stripping machine according to item 2. (4) The means for supporting the blade support plate so as to be slidable in the front, rear, left and right directions include a roller caster that is in contact with the upper front surface of the blade support plate, and a roller caster that is located above and below the rear of the blade support plate and is supported by a support shaft in the width direction. A floor material peeling machine according to any one of claims 1 to 3, which is a utility model and comprises upper and lower guide rollers sandwiching the blade support plate.