JP2821937B2 - Road surface ice breaking machine - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an ice breaking machine for breaking and peeling an ice layer stretched on a road surface or other ground surface.

[Problems to be solved by the invention]

In cold regions such as northern countries, roads and the like are covered with ice during winter and slip and are dangerous. For this reason, the work of breaking the ice on the road surface with a pickaxe and taking out the ground is performed, but the work of ice breaking with a pickaxe is heavy work, the work efficiency is poor, and it is dangerous, so women and children are It was difficult.

An object of the present invention is to provide an inexpensive road surface ice breaker that can be operated by women and children, and that has a simple structure.

[Means for solving the problem]

The object of the present invention is to provide a main body having a transfer means such as wheels and a handle frame; and a base of a cutter arm having a downwardly directed cutter at a distal end so as to be pivotally movable with the distal end of the main body so as to be integral with the cutter arm. At least one cutter unit provided with an engaging member, a spring member provided between the frame of the main body and an operating rod of the cutter unit, and for urging the cutter unit in a downward direction; driven by a driving means such as a motor. And a cutter driving mechanism that repeatedly engages with the engaging member of the cutter unit, pulls the cutter unit back against the spring, and releases the engagement with the engaging member. It can be achieved by a road surface ice breaker characterized by the following.

The cutter driving mechanism is driven to rotate by a driving means such as a motor, engages with an engaging member attached to an operating rod of the cutter unit, pulls the cutter unit back against a spring, rotates the cutter unit by a certain angle, and then engages with the engaging member. It is desirable to use a rotating cam member having a notched concave portion for releasing the engagement of the cam member.

Preferably, the cutter unit is formed such that the cutter inner side is inside the rotation path of the tip of the cutting edge.

[Function of the invention]

Since the present invention has the above-described structure, the cutter unit is pulled back upward by the drive mechanism against the spring just by turning on the switch of the drive device such as a motor, and after a certain timing, the reaction force of the spring and the gravity of the cutter unit cause it. The cutting edge of the cutter unit is repeatedly and continuously shot down toward the ice layer on the road surface. Therefore, only by moving the device with the handle, the ice layer on the road surface breaks into small pieces sequentially and peels off from the ground surface.

In particular, if the inside slope of the cutter is designed to be inside the rotation orbit of the tip of the cutter blade, the force of pulling instantly toward the front by the inside slope of the cutter acts simultaneously with the driving of the cutting edge, so the ice peeling effect is reduced. It gets even stronger.

(Example of the invention)

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

In the ice breaking machine 1 according to the present invention, as shown in FIG. 1, a cutter unit 5 is pivotally mounted on a front part of a body 4 having a transfer means 2 such as wheels and a handle frame 3, and the cutter unit 5 is driven by a spring member and a cutter driving mechanism described later. The cutting edge of the cutter unit 5 is repeatedly rotated up and down.

That is, as shown in detail in FIG.
A pair of left and right rubber tire wheels are pivotally mounted on the rear of the main frame 6 as the transfer means 2, and the handle frame 3 having a gripping portion 3 ′ at the tip is integrated upward from the rear of the main frame 6. Is provided.

A cutter unit 5 is rotatably attached to a tip of the main frame 6 by a hinge pin 7.

The cutter unit 5 has a downwardly directed cutter 5b at the distal end of the cutter arm 5a and an operating rod 5c at the proximal end thereof, and pivotally connects the proximal end to the bracket 6 'of the main body 1 as described above. It can rotate up and down. As shown in FIGS. 2 and 3, an engaging member 5d for engaging with a cutter driving mechanism to be described later is provided at the tip of the operating rod 5c. In the embodiment shown in FIG. It is constituted by a roller 5d 'axially mounted on the rod 5c.
Preferably, the head of the cutter unit is made heavy.

A vertical plate 8 is provided inside the main body 1 so as to face the operating rod 5c of the cutter unit 5.
A spring member 9 is provided between the plate 8 and the operating rod 5c, and the cutter unit 5 is urged downward by a strong repulsive force of the spring member 9.

In the illustrated embodiment, the cutter driving mechanism 10 includes a driving device 11 including a motor 11a and a reduction gear 11b, and a rotary cam member 12 fixed to a rotary driving shaft 11c of the driving device.

The rotating cam member 12 is disposed in parallel with the operating rod 5c of the cutter unit 5, and is configured to engage with the engaging member 5d (that is, the rotor 5d ') of the operating rod 5c as follows.

That is, as illustrated in FIG. 4, the rotary cam member 12 is inclined in the direction opposite to the rotation direction (arrow) from the front end side to the rear end side, and is rotated by the operation rod of the cutter unit 5.
The inclined cam surface 12a that pulls back the engaging member 5d of 5c backward, and the notch recess 12b that releases the engagement between the engaging member 5d of the operating rod 5c.
Are alternately formed along the outer circumference, and have a rear end cam surface 12c connecting the inclined cam 12a and the notch recess 12b.

Thus, when the engaging member 5d of the operating rod 5c is engaged with the inclined cam surface 12a of the rotating cam member 5, the cutter unit 5 is pulled back against the spring member 9 and the engaging member 5d is moved rearward. After passing over the end cam surface 12c,
When the engagement is released at 2b, the cutter unit 5 is knocked down by the repulsive force of the spring member 9. Since the inclined cam surface 12a and the notch recess 12b are alternately formed along the circumference of the cam member 12, the above operation is repeated as long as the cam member 12 is rotating.

In the illustrated embodiment, the engaging member 5d of the operating rod 5c is a cam member.
When the cam member 12 is engaged with the rear end cam surface 12c, a forward pressing force acts on the cam member 12 by the spring member 9, so that the cam member
12 may come off, and a useless load is applied to the motor. For this reason, as shown in FIG. 2, a conical thrust stopper 13 is preferably provided integrally with the front surface of the cam member 12 and a stop bracket 14 for abutting the tip of the thrust stopper 13 on the front end of the main body 1. Is provided.

In the embodiment shown in the drawing, for simplicity of explanation, a pair of cutter units 5, 5 are arranged on the left and right sides of the cam member 12, and a pair of inclined cams 12a and notch Although the case where the left and right cutter units 5 and 5 alternately perform a single downhill operation by one rotation of the cam member 12 is illustrated, one cutter unit 5 may be provided for one cam member 12, It is of course also possible to provide a plurality of sets of inclined cam surfaces 12a and notched concave portions 12b around one cam member 12, and in this case, if the power of the motor 11a is increased, the two cutter units 5, 5 can be simultaneously You can make it go down.

Further, as shown in FIG. 2, the cutter 5b of the cutter unit 5 is used.
Is desirably formed such that the inside normal side 15 is inside the rotation orbit l of the blade tip. In this way, when the ice is hit on the ice surface, the inside slope 15 acts to scrape the broken ice toward the near side, so that the peeling effect is further improved.

In the figure, 16 is a cover of the main body 1, 17 is a stopper at the bottom dead center of the cutter unit 5, and 18 is a hand switch of the motor 11a.

In the illustrated embodiment, the rotary cam member 12 is shown as a preferred specific example of the cutter driving device 10, but the cutter driving device of the present invention is not limited to this, and is driven by driving means 11 such as a motor. Any other structure may be used as long as the mechanism engages with the engaging member 5d of the cutter unit 5, pulls the cutter unit 5 back against the spring 9, and releases the engagement with the engaging member 5d. The present invention includes this.

[Effect of the invention]

Since the present invention has the above configuration, the cutter unit automatically rotates up and down simply by operating the hand switch of the ice breaking machine, and is strongly knocked down on the ice surface by the repulsive force of the spring and the weight of the cutter unit. The layers can be split effectively. Therefore, labor is reduced, and even women and children can easily perform ice breaking work.

Further, the structure is relatively simple, and in particular, the structure in which the cutter units are alternately dropped down is sufficiently economical because it can operate sufficiently even with 100 V and 90 W power.

[Brief description of the drawings]

1 is a side view of an ice breaking machine according to the present invention, FIG. 2 is a longitudinal sectional view of a main part of FIG. 1, FIG. 3 is a sectional view taken along line III-III of FIG.
FIG. 4 is a schematic explanatory view of engagement between the rotating cam member and the engagement member. 2 ... Conveying means, 3 ... Handle arm, 4 ... Body body, 5 ... Cutter unit, 6 ... Main frame,
Reference numeral 8: plate, 9: spring member, 10: cutter driving mechanism, 11: driving device, 12: rotating cam member, 12a: inclined cam surface, 12b: notched concave portion, 12c: rear end Cam surface, 13
…… Thrust Stopper, 14 …… Stop Bracket, 15
... Inside face of the cutter, l...

Claims (3)

(57) [Claims] 1. A main body having a transfer means such as wheels and a handle frame; and a base of a cutter arm having a downwardly directed cutter at a distal end is pivotally connected to a distal end of the main body so as to be movable.
At least one set of cutter units provided with an engaging member on an operating rod integral with the cutter arm; a spring member provided between the frame of the main body and the operating rod of the cutter unit to bias the cutter unit in a downward direction; The cutter drive is driven by a driving means such as the like, and engages with the engaging member of the cutter unit, pulls the cutter unit back against the spring, and repeatedly releases the engagement with the engaging member. A road surface ice breaker, comprising: a mechanism; 2. A cutter driving mechanism is driven to rotate by a driving means such as a motor, engages with an engaging member attached to an operating rod of the cutter unit, pulls the cutter unit back against a spring, and after rotating the cutter unit by a predetermined angle. The road surface ice splitter according to claim 1, wherein the rotary ice member has a notched concave portion for releasing the engagement with the engagement member. 3. A road surface ice breaking machine according to claim 1, wherein said cutter unit has a cutter inner side edge formed inside a rotation path of a tip of a cutting edge.