JP3221513U - Tip holder for drilling and crushing tools - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent physical damage to a worker by effectively preventing "cutting edge" of a drilling and crushing tool at the time of performing a drilling operation or a crushing operation on a floor surface, and practical drilling and crushing Provided is a tip holder for a tool. A tip holder (1) is for holding a bit portion of a rock drilling machine or a tip portion of a concrete breaker in a digging operation or a crushing operation of a floor surface, and a vertically disposed cylindrical tip insertion It has a portion 2 and a flat plate portion 3 provided so as to horizontally project from the left and right of the lower end surface of the distal end insertion portion 2. [Selected figure] Figure 1

Description

  The present invention relates to a tip holder for holding a tip portion of a drilling and crushing tool (such as a bit portion of a rock drilling machine and a tip portion of a concrete breaker) during a drilling or crushing operation of a floor surface.

  When dismantling bricks and refractories at the bottom of a furnace, etc., a rotary rock drilling machine that rotates a rod with a bit attached to the tip, or a concrete breaker that crushes the floor surface due to impact when moving the tip up and down Drilling and crushing tools are used. And when dismantling bricks and refractories at the bottom of the furnace using such a drilling and crushing tool, it is necessary for the operator to hold the handle at the upper end of the drilling and crushing tool firmly with a strong force. If the gripping force is insufficient, the tip of the excavating and crushing tool vibrates in the off-axis direction, so-called "blade tipping" occurs, and the operator suffers a great deal of physical damage.

  Therefore, in order to avoid the occurrence of such "blade edge upset", two impact absorbing heavy material storage bags containing high specific gravity particles are connected by a band as in Patent Document 1; There has been developed an impact absorbing jig for a vibrating device provided with a fixing material for suspending and fixing the shock absorbing heavy material storage bag to a vibrating device and a handle or the like of the digging and crushing tool.

Unexamined-Japanese-Patent No. 5-116077 gazette

  However, the shock absorbing jig for vibratory equipment of Patent Document 1 stabilizes the tip of the vibratory equipment by the gravity of the two shock absorbing heavy-duty storage bags, and if the weight is not large, the tip of the vibratory equipment As a result, the impact absorbing jig itself may be carried to the operator or attached to a vibrating device, which may in turn cause a great deal of physical damage to the worker.

  The object of the present invention is to solve the problems of the conventional vibration device aid such as the shock absorbing jig of the above-mentioned Patent Document 1 and to effectively prevent the "cutting edge" of the drilling and crushing tool. It is an object of the present invention to provide a tip holder for a practical drilling and crushing tool capable of reducing physical damage to the wearer.

  Among the present inventions, the invention described in claim 1 is a tip holder for holding a tip portion of a drilling and crushing tool in a drilling operation or a crushing operation of a floor surface, which is a cylindrically arranged vertically And a flat plate portion provided so as to horizontally project from the left and right of the lower end surface of the distal end insertion portion.

  According to a second aspect of the present invention, in the first aspect, the plate portion is formed in a laterally symmetrical wide elliptical shape so as to sandwich the upper end surface and the lower end surface of the distal end insertion portion. It is characterized by

  According to a third aspect of the invention, in the device according to the first or second aspect, the distal end insertion portion is formed in a cylindrical shape, and the width of the plate portion is the same as that of the distal end insertion portion. It is characterized in that it has the same diameter as the outer diameter.

  The tip holder for the drilling and crushing tool according to claim 1 is such that the operator inserts the tip of the drilling and crushing tool (the bit portion of the rock drilling machine or the tip portion of the concrete breaker) into the inside of the tip insertion portion, By operating the drilling and crushing tool with the toe portions of both legs placed on the plate portions extended from the left and right of the foot and applying the entire weight, the "cutting edge" that the tip of the drilling and crushing tool vibrates in the off-axis direction is effective Can be prevented. Therefore, according to the tip holder of the drilling and crushing tool according to the first aspect, physical damage of the worker during the drilling or crushing operation can be significantly reduced.

  In the tip holder of the drilling and crushing tool according to claim 2, the plate portion is formed in a laterally symmetrical wide elliptical shape so as to sandwich the upper end surface and the lower end surface of the tip insertion portion. It is not easily broken even if it is received, and can be used similarly even if it is upside down, so it is excellent in convenience.

  The tip holder of the drilling and crushing tool according to claim 3 has a tip insertion portion formed in a cylindrical shape, is resistant to breakage even when the tip insertion portion receives an impact, and has a compact plate portion and is lightweight Because it is, it is convenient to carry.

It is explanatory drawing which shows the front-end | tip holding tool of an excavation crushing tool (a is a top view, b is a front view, c is an AA line end view in a, d is a perspective view). It is explanatory drawing which shows the usage method of the front-end | tip holder of an excavation crushing tool.

  Hereinafter, one embodiment of a tip holder (hereinafter, simply referred to as a tip holder) of a drilling and crushing tool according to the present invention will be described in detail based on the drawings.

<Structure of tip holder>
FIG. 1 shows an example of a tip holder according to the present invention, and the tip holder 1 is integrally formed of metal (iron), and is a cylindrical tip insertion portion disposed vertically. 2 and a plate portion 3 which is formed in an elliptical shape which is symmetrical in the right and left direction so as to sandwich the upper end surface and the lower end surface of the distal end insertion portion 2. The tip holder 1 has a size of width × length × height = 500 mm × 50 mm × 80 mm.

  The distal end insertion portion 2 is formed of metal (iron) in a cylindrical shape of outer diameter 50 mm × inner diameter 40 mm (thickness 5 mm), and has a height of 80 mm.

  On the other hand, the plate portion 3 is formed by the left side plate member 3a and the right side plate member 3b having the same shape. Each of the plate members 3a and 3b is formed by bending a metal plate (iron plate) having a thickness of 5 mm so that the vertical cross section (vertical cross section along the longitudinal direction) is substantially U-shaped in a horizontal direction. In the upper and lower edges, semicircular notches with an inner diameter of 50 mm are formed. Then, the plate portion 3 is formed in a wide elliptical shape by abutting the upper and lower notches of the plate members 3a and 3b to the upper and lower peripheral edges of the distal end insertion portion 2 from both sides and welding them. It is in a state of

  Further, as described above, in the plate portion 3 formed in a wide elliptical shape, the left and right end edges are bent so as to draw a circular arc having a curvature radius of R = 40 mm, and about 420 mm vertically around the center The flat portion (including the installation portion of the distal end insertion portion 2) is formed. Furthermore, the upper end edge and the lower end edge of the distal end insertion portion 2 and the upper and lower outer surfaces of the plate portion 3 are flush with each other.

<How to use tip holder>
FIG. 2 shows how to use the tip holder 1 configured as described above. When the operator performs drilling or crushing work of the floor surface using the tip holder 1, the tip holder 1 is placed on the floor surface, and the tip of the drilling and crushing tool M (bit portion of rock drilling machine Alternatively, the tip of the concrete breaker is inserted into the inside of the tip insertion portion 2 and the operator inserts the toe portions of both feet into the space on the left and right of the tip insertion portion 2 formed by the plate portion 3 Stand the inner surface of the side of the part 3 in contact with the ground with a foot.

  As the worker steps on the inner surface of the plate portion 3 and stands up, the entire weight of the worker is applied to the tip holder 1, so that the tip holder 1 is fixed so as not to move. Then, by operating the digging and crushing tool M in this posture, the tip of the digging and crushing tool M is held inside the tip insertion portion 2, so that the tip of the digging and crushing tool M vibrates in an off-axis direction The situation of "blade edge upset" is prevented.

<Effect of tip holder>
As described above, the tip holder 1 is a cylindrical tip insertion portion 2 vertically disposed, and a flat plate portion provided so as to horizontally project from the left and right of the lower end surface of the tip insertion portion 2 3 and the operator inserts the tip of the drilling and crushing tool M (the bit portion of the rock drilling machine or the tip portion of the concrete breaker) into the inside of the tip insertion portion 2 and extends from the left and right of the tip insertion portion 2 By operating the drilling and crushing tool M in a state where the toes of both feet are placed on the plate portion 3 and the entire weight is applied, “tip edge asperity” in which the tip of the drilling and crushing tool M vibrates in the off-axis direction is effectively It can be prevented. Therefore, according to the tip holder 1, it is possible to significantly reduce the physical damage of the worker during the digging or crushing operation.

  In addition, since the tip holder 1 is formed in a horizontally-symmetrical, wide elliptical shape so as to sandwich the upper end surface and the lower end surface of the tip insertion portion 2, the plate portion 3 receives an impact. It is also hard to break and can be used upside down as well, so it has excellent convenience.

  Furthermore, in the tip holder 1, the tip insertion portion 2 is formed in a cylindrical shape, and the width of the plate portion 3 is the same as the outer diameter of the tip insertion portion 2. It is hard to break even if it is received, and since the plate portion 3 is formed compact and lightweight, it is convenient to carry.

  In addition, in the tip holder 1, the inner diameter of the tip insertion portion 2 is approximately 103% to 105% of the outer diameter of the tip (the bit portion of the rock drilling machine or the tip portion of the concrete breaker) of the drilling and crushing tool M used for the drilling and crushing operation. Since it is designed to be in%, it is possible to very effectively prevent "edge outliers" without inhibiting the operation (vertical movement or rotation) of the drilling and crushing tool M.

<Example of Modification of Tip Holder>
The tip holder according to the present invention is not limited to the aspect of the above-described embodiment, and the configuration of the tip insertion portion, the plate portion, etc. may be appropriately selected without departing from the scope of the present invention. It can be changed.

  For example, the tip holder is not limited to the one having the plate portion formed in an elliptical shape which is symmetrical in the left-right symmetry so as to sandwich the upper end face and the lower end face of the tip insertion portion as in the above embodiment. The plate part which extends to the left and right is provided only in the lower end face of the part, and the plate in which the front view is reverse T-shaped, and the plate part extends to the left and right in the lower end face and the upper end face of the tip insertion part It is also possible to change to a H-shaped side view or the like in which the parts are provided separately and the front view is horizontal.

  Further, the tip holder is not limited to the same as the above embodiment in which the thickness of the metal plate constituting the tip insertion portion is the same as the thickness of the metal plate constituting the plate portion, but constitutes the tip insertion portion It is also possible to change the thickness of the metal plate to one thicker than the thickness of the metal plate constituting the plate portion. By adopting such a configuration, it is possible to further reduce the weight.

  Furthermore, the tip holder is not limited to one having a cylindrical tip insertion portion with a constant diameter as in the above embodiment, but one having a tubular tip insertion portion with an elliptical horizontal cross section, or a tapered cylinder It is also possible to change to the one having the tip insertion part of

  Since the tip holder according to the present invention exerts the excellent effects as described above, it can be suitably used as a work assisting tool for reducing physical damage of a worker in digging or crushing work of a floor surface. it can.

1 · · · Tip holder 2 · · · Tip insertion portion 3 · · · Plate portion

Claims (3)

A tip holder for holding a tip portion of a drilling and crushing tool in a drilling and crushing operation of a floor surface, comprising:
A cylindrical tip insertion portion disposed vertically,
A tip holder for a digging and breaking tool characterized in that it has a flat plate portion provided so as to protrude horizontally from the left and right of the lower end face of the tip insertion portion.   The tip holder for the digging and crushing tool according to claim 1, wherein the plate portion is formed in a laterally wide symmetrical elliptical shape so as to sandwich the upper end face and the lower end face of the tip insertion portion. .   The tip insertion portion is formed in a cylindrical shape, and the width of the plate portion is equal to the outer diameter of the tip insertion portion. Tip holder for drilling and crushing tools.

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