JP2003127922A - Skidproof apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skidproof apparatus capable of easily attaching to and detaching from a rubber crawler shoe. SOLUTION: This apparatus is provided with a tread structure 6 capable of fitting on a connecting part 3 between adjacent projection parts 2 of a rubber crawler shoe 1 from an outer circumference surface side of the rubber crawler shoe 1, a locking part 8 connecting to one end part of the tread structure 6 and capable of engaging with one side end and an inner circumference surface of the rubber crawler shoe 1 when the tread structure 6 is fitted on the connecting part 3, a retaining part 9 connecting to another side of the tread structure 6 and facing to another side edge of the rubber crawler shoe 1 when the tread structure 6 is fitted on the connecting part 3, a fixing part 10 capable of getting into contact with the inner circumference surface of the rubber crawler shoe 1 and the retaining part 9 when the tread structure 6 is fitted on the connecting part 3, a fixing bolt 11 fastening the fixing part 10 on the retaining part 9, and spikes 7 fixed on the tread structure 6 and sticking out from the rubber crawler shoe 1 when the tread structure 6 is fitted on the connecting part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slip stopper used for a rubber crawler shoe.

[0002]

2. Description of the Related Art In recent years, in working machines such as small hydraulic excavators that often travel on and off pavement roads to and from work sites, rubber crawler shoes are used for running bodies to protect the road surface and suppress noise. ing.

FIG. 6 is a vertical sectional front view showing an example of a rubber crawler shoe conventionally used in a working machine, and FIG.
FIG. 7 is a view taken along the line VII-VII of FIG. 6, in which the rubber crawler shoe 1 has a large number of protrusions 2 arranged at equal intervals and capable of contacting the road surface, respectively, and a connecting portion 3 located between the protrusions 2.
Has a structure in which end portions are connected endlessly, and a core metal (not shown) for maintaining strength is embedded inside each of the protrusions 2. Then, as shown in FIG. 7, an inclined surface 4 is formed at an end portion of the protrusion 2 that is connected to the connecting portion 3 so that the height of the protruding portion 2 decreases toward the connecting portion 3.

Compared with steel crawler shoes, rubber crawler shoes are more likely to slip during snowfall in winter or when the road surface freezes, resulting in insufficient driving force or reduced steering performance.

Therefore, conventionally, the rubber crawler shoe has been replaced with a steel crawler shoe depending on the season.

[0006]

However, in order to be able to replace the crawler shoes, it is necessary to lift the traveling body to separate the crawler shoes from the ground surface. I can't do it.

Also, it is not economical to prepare both the rubber crawler shoe and the steel crawler shoe.

Further, like the rubber crawler shoe disclosed in Japanese Utility Model Registration No. 25661517, spikes are integrally formed on the core metal to be embedded in the protrusions (lugs) so that the spikes protrude from the protrusions. , It is possible to suppress the slip on the road surface, but with this method,
Since the spikes cannot be removed, the spikes can damage the road surface when there is no snow.

The present invention has been made in view of the above situation, and an object thereof is to provide a non-slip member which can be easily attached to and detached from a rubber crawler shoe.

[0010]

In order to achieve the above object, in the slip preventer according to claim 1 of the present invention, a plurality of protrusions arranged at equal intervals and capable of contacting the road surface are provided between the protrusions. A tread structure which is used for a rubber crawler shoe having endlessly connected connecting parts, and which can be fitted into a connecting part between adjacent protruding parts from the outer peripheral surface side of the rubber crawler shoe. A locking portion that is continuous with one end of the tread structure and is engageable with one side edge and the inner peripheral surface of the rubber crawler shoe when the tread structure is fitted into the connecting part, and the other end of the tread structure Holding part that is continuous with the tread part and faces the other side edge of the rubber crawler shoe when the tread surface structure is fitted in the connecting part, and the rubber crawler shoe inner peripheral surface and the holding part when the tread surface structure is fitted in the connecting part. A fixed part that can come into contact with and hold the fixed part It comprises a fixing bolt for fastening, and a spike in fitting the tread structure into and connecting portion is fixed to the tread structure projecting outward rubber crawler shoe.

Further, in the slip stopper according to a second aspect of the present invention, a large number of protrusions arranged at equal intervals and capable of contacting the road surface and a connecting portion located between the protrusions are endless. A non-slip device used for a continuous rubber crawler shoe, wherein a tread structure that can be fitted into a connecting portion between adjacent protrusions from an outer peripheral surface side of the rubber crawler shoe, and a tread structure connected to one end of the tread structure and A locking portion that is engageable with one side edge and the inner peripheral surface of the rubber crawler shoe when the tread surface structure is fitted in the connecting portion, and a tread surface structure body connected to the other end of the tread surface structure body and connected to the connecting portion. A holding part that faces the other side edge of the rubber crawler shoe when fitted, and a restraining bolt that can be screwed into the holding part so that it comes into contact with the inner peripheral surface of the rubber crawler shoe when the tread structure is fitted into the connecting part. And fixed to the tread structure and at the connecting part And a spike which protrudes outward rubber crawler shoe when fitting the surface structure.

Further, in the slip stopper according to a third aspect of the present invention, the tread structure is provided with a chamfered portion which can be brought into close contact with a portion between the protruding portion and the connecting portion of the rubber crawler shoe. .

In the slip stopper according to claim 1 of the present invention, the rubber crawler shoe is provided with the tread structure to which the spikes are fixed while the engaging portion is engaged with one side edge and the inner peripheral surface of the rubber crawler shoe. Then, the fixing portion is fastened to the holding portion with the fixing bolts, and the rubber crawler shoe is attached with spikes that should be bitten into the snowy road surface or the frozen road surface.

In the slip stopper according to the second aspect of the present invention, the rubber crawler shoe is provided with the tread structure to which the spikes are fixed while the engaging portion is engaged with the one side edge and the inner peripheral surface of the rubber crawler shoe. Then, a restraining bolt is screwed into the holding portion so as to contact the inner peripheral surface of the rubber crawler shoe, and a spike to be cut into a snowy road surface or a frozen road surface is attached to the rubber crawler shoe.

In the slip stopper according to claim 3 of the present invention, when the tread structure is fitted into the connecting portion of the rubber crawler shoe, it is provided at a position between the protruding portion and the connecting portion of the rubber crawler shoe. The chamfered portion of the edge of the tread structure is in close contact with the tread structure to prevent the tread structure from being displaced in the longitudinal direction of the rubber crawler shoe.

[0016]

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

FIG. 1 is a vertical sectional front view showing an example of an embodiment of the present invention, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG.
III-III sectional view of the same, in which the same reference numerals as those in FIGS. 6 and 7 indicate the same parts.

The non-slip member 5 used for the rubber crawler shoe 1 is mainly composed of a flat tread structure 6 made of a metal such as steel and having a strip shape so that a plurality of spikes 7 project downward. It is integrally embedded in the tread structure 6.

At the left end of the tread structure 6 in FIG.
A U-shaped locking portion 8 that bends upward and opens to the right is connected, and the right end portion of the tread structure 6 in FIG.
Holding portions 9 that are bent in an L-shape toward the top are connected.

A short plate-shaped fixing portion 10 is fastened to the upper end of the holding portion 9 with a fixing bolt 11, and the fixing portion 10 is fixed in a state of protruding from the upper end of the holding portion 9 to the left in FIG. It has become so.

Further, as shown in FIG. 3, the rubber crawler shoe 1 has chamfered edges on both sides of the tread structure 6.
An inclined portion 12 corresponding to the inclination angle of the inclined surface 4 between the connecting portion 3 and the protrusion 2 is formed.

When this slip stopper 5 is used, the fixing bolt 11 and the fixing portion 10 are removed from the holding portion 9, and the portion of the rubber crawler shoe 1 that is not in contact with the road surface is outside the machine body of the working machine. From the above, the tread structure 6 is fitted into the connecting portion 3 of the rubber crawler shoe 1 with the locking portion 8 at the top.

Then, the tread structure 6 is pushed in until the holding part 9 is slightly inserted below the connecting part 3, and the locking part 8 is the inner edge of the working machine body on the left side of the connecting part 3 of the rubber crawler shoe 1 in FIG. The tread structure 6 is pulled so as to engage with the inner peripheral surface.

The clearance between the U-shaped inner bottom surface of the engaging portion 8 and the inner surface of the holding portion 9 in the tread structure 6 is made slightly larger than the width of the rubber crawler shoe 1 to be mounted. As shown in FIG. 1, when the engaging portion 8 engages with the inner edge and the inner peripheral surface of the working machine body of the connecting portion 3 of the rubber crawler shoe 1, and the tread structure 6 extends along the connecting portion 3, the holding portion 9 is opposed to the outer edge of the working machine body on the right side in FIG. 1 of the connecting portion 3 of the rubber crawler shoe 1.

The above work is carried out by gradually moving the rubber crawler shoe 1 in the circumferential direction little by little, but it is not always necessary to attach the slip stoppers 5 to all the connecting portions.

In this state, when the fixing portion 10 is fastened to the holding portion 9 with the fixing bolts 11, the fixing portion 10 comes into close contact with the inner peripheral surface of the rubber crawler shoe 1 on the outside of the working machine body, and as shown in FIG. The tool 5 is fixedly fitted in the connecting portion 3 of the rubber crawler shoe 1, and the inclined portions 12 on both sides of the tread structure 6 come into close contact with the inclined surface 4 as shown in FIG. It is possible to maintain a stable fixed state without displacement in the longitudinal direction.

As described above, when the slip stopper 5 is fixed to the connecting portion 3 of the rubber crawler shoe 1 and the working machine is caused to travel during snow accumulation or road surface freezing, the spikes 7 protruding from the tread structure 6 are not covered with snow. Cut into the ice to prevent gliding.

In the case of non-snow and non-freezing, contrary to the above-mentioned procedure, the fixing bolt 11 and the fixing portion 10 are removed from the outside of the machine body of the working machine, and the locking portion 8 of the connecting portion 3 of the rubber crawler shoe 1 is removed. When the tread surface structure 6 is pulled out from the lower side of the connecting portion 3 by detaching it from the inner edge and the inner peripheral surface of the working machine body on the left side in FIG.
Directly contacts the road surface, and the working machine can be run without damaging the road surface.

Next, FIG. 4 is a vertical sectional front view showing another example of the embodiment of the present invention, and FIG. 5 is a view taken along the line VV of FIG.
The same parts as those in FIGS. 1 to 3 described above are designated by the same reference numerals.

In the anti-slip device 5 shown in FIGS. 4 and 5, the holding portion 9 at the right end of the tread structure 6 in FIG. 4 extends above the upper surface of the rubber crawler shoe 1, and the rubber crawler shoe 1 is shown. At a position slightly higher than the upper surface of the end portion of the stopper, the restraining bolt 13 is screwed in the holding portion 9 in the horizontal direction so that the tip of the restraining bolt 13 can be projected to the upper surface of the rubber crawler shoe 1. It has become.

In the slip stopper 5 shown in FIGS. 4 and 5, as in the embodiment shown in FIGS. 1 to 3, a plurality of spikes 7 are integrated with the tread structure 6 so as to project downward. Is provided with a U-shaped locking portion 8 that is bent upward and opens to the right. The edge portions on both sides of the tread structure 6 are chamfered as shown in FIG. Has been formed.

When the anti-slip device 5 shown in FIGS. 4 and 5 is used, the restraining bolt 13 is removed from the holding portion 9 and the locking portion 8 is shown in the same manner as in the above-described embodiment. 4 is engaged with the working machine body inner edge and inner peripheral surface of the connecting portion 3 of the rubber crawler shoe 1, and the tread structure 6 is connected to the connecting portion 3
The holding portion 9 is made to face the outer edge of the working machine body of the connecting portion 3 of the rubber crawler shoe 1 along the lower surface of the holding crawler shoe 1, and the holding bolt 9 is deeply screwed into the holding portion 9.
The tip portion of 3 comes into pressure contact with the upper surface of the rubber crawler shoe 1, and the slip stopper 5 is fixedly fitted into the connecting portion 3 of the rubber crawler shoe 1 to be suitable for running during snowfall or road surface freezing. Become.

When the snow is not covered with snow, the restraining bolt 13 is pulled out from the holding portion 9, so that the engaging portion 8 is removed from the inner edge and the inner peripheral surface of the working portion of the connecting portion 3 of the rubber crawler shoe 1 on the left side in FIG. By removing the tread structure 6 from the rubber crawler shoe 1, the working machine can be run without damaging the road surface.

The anti-skid device of the present invention is not limited to the above-mentioned embodiments, and it goes without saying that changes can be made without departing from the scope of the present invention.

[0035]

As described above, according to the anti-slip device of the present invention, various excellent effects as described below can be obtained.

(1) In the slip stopper according to claim 1 of the present invention, it is not necessary to prepare both the rubber crawler shoe and the steel crawler shoe, and the rubber crawler shoe is simply attached and detached with the fixing portion and the fixing bolt. Can be easily and quickly installed,
The driving force and steerability of the rubber crawler shoe can be secured during snowfall or when the road surface freezes.

(2) The slip stopper according to claim 2 of the present invention does not need to prepare both a rubber crawler shoe and a steel crawler shoe, and can be easily attached to a rubber crawler shoe by only attaching and detaching a restraining bolt. It can be installed in a short time, and the driving force and steerability of the rubber crawler shoe can be secured during snowfall or when the road surface freezes.

(3) In the slip stopper according to a third aspect of the present invention, the chamfered portion of the tread structure is in close contact with the rubber crawler shoe at a portion between the protrusion and the connecting portion, and the tread structure is formed. Since the displacement of the rubber crawler shoe in the longitudinal direction is suppressed, the slip stopper can be kept in a stable fixed state.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an example of an embodiment of a non-slip member of the present invention.

FIG. 2 is a view taken along the line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a vertical cross-sectional front view showing another example of the embodiment of the slip stopper of the present invention.

5 is a view taken along the line VV of FIG.

FIG. 6 is a vertical sectional front view showing an example of a rubber crawler shoe conventionally used in a working machine.

FIG. 7 is a view on arrow VII-VII in FIG.

[Explanation of symbols]

1 rubber crawler shoe 2 protrusion 3 connection 4 Inclined surface (location) 5 Anti-slip equipment 6 tread structure 7 spikes 8 Locking part 9 Holder 10 Fixed part 11 fixing bolt 12 Inclined part (chamfered part) 13 Restraint bolt

Claims (3)

[Claims] 1. A plurality of protrusions arranged at equal intervals and capable of contacting a road surface, respectively, and a connecting portion located between the protrusions.
A non-slip device used for endlessly connected rubber crawler shoes, wherein a tread structure that can be fitted into a connecting portion between adjacent protrusions from the outer peripheral surface side of the rubber crawler shoe,
A locking portion that is continuous with one end of the tread structure and is engageable with one side edge and the inner peripheral surface of the rubber crawler shoe when the tread structure is fitted into the connecting part, and the other end of the tread structure. A holding part facing the other side edge of the rubber crawler shoe when the tread structure is fitted to the connecting part, and an inner peripheral surface of the rubber crawler shoe and the holding part when the tread structure is fitted to the connecting part. A fixed part that can abut, a fixing bolt that fastens the fixed part to the holding part, and a spike that is fixed to the tread structure and that protrudes to the outside of the rubber crawler shoe when the tread structure is fitted into the connecting part. A non-slip device comprising: 2. A plurality of protrusions arranged at equal intervals and capable of contacting a road surface, respectively, and a connecting portion located between the protrusions.
A non-slip device used for endlessly connected rubber crawler shoes, wherein a tread structure that can be fitted into a connecting portion between adjacent protrusions from the outer peripheral surface side of the rubber crawler shoe,
A locking portion that is continuous with one end of the tread structure and is engageable with one side edge and the inner peripheral surface of the rubber crawler shoe when the tread structure is fitted into the connecting part, and the other end of the tread structure. And a holding portion facing the other side edge of the rubber crawler shoe when the tread structure body is fitted to the connecting portion and the inner surface of the rubber crawler shoe when the tread surface structure is fitted to the connecting portion. It is characterized by comprising a restraining bolt that can be screwed into the holding portion, and a spike that is fixed to the tread structure and that protrudes to the outside of the rubber crawler shoe when the tread structure is fitted into the connecting part. Anti-slip device. 3. The anti-skid device according to claim 1, wherein the tread surface structure is provided with a chamfered portion that can be brought into close contact with a portion between the protruding portion and the connecting portion of the rubber crawler shoe. .