JP4014957B2 - Jackhammer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rock drill.
[0002]
[Prior art]
One method of excavating mountain tunnels is drilling rocks. Split rock drilling involves drilling a hole in the rock using a rock drill and inserting hydraulic wedges into the hole to break up the rock. An example of a rock drill used for split rock excavation is one in which a plurality of rods each having a bit attached to the tip are arranged in parallel as disclosed in Japanese Patent Application Laid-Open No. 57-116893 and Japanese Patent No. 3045261. It is done. These improve work efficiency by providing a plurality of rods.
[0003]
[Problems to be solved by the invention]
However, if the spacing between the holes for inserting hydraulic wedges varies depending on the hardness of the rock mass and the size of the tunnel, separate rock drills must be introduced, which reduces work efficiency and increases construction costs. I was invited.
[0004]
Accordingly, an object of the present invention is to provide a rock drill capable of drilling holes without causing a decrease in work efficiency and an increase in construction cost even if the interval between holes is different.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention described in claim 1 is a rock drilling machine in which a plurality of rods 7a to 7d having bits 71 attached to their tips are arranged in parallel as shown in FIGS. 1, a plurality of mounting tables 6a to 6h on which the rods 7a to 7d are mounted and the adjacent mounting tables 6a to 6h are connected to each other, and the mounting tables 6a to 6h are connected to the rods 7a to 7d by expansion and contraction. Rod moving means 8a to 8h for moving in the parallel direction, a pedestal 5 for supporting each mounting table 6a to 6h so as to be movable in the parallel direction of the rods 7a to 7d, and a boom attached to the rock drill main body 2 so as to be raised and lowered 3, and a pivot part 4 that supports the gantry 5, and the rod moving means 8 a to 8 h are connected to the pivot part 4 and the gantry 5. Fixed at the center and the piston rod Two cylinder devices 8b, 8c having equal strokes, which are arranged so as to expand and contract in opposite directions, and are respectively connected to mounting tables 6b, 6c, 6f, 6g facing each other across the center of the connecting portion. , 8f, 8g and other adjacent mounting tables 6a, 6d, 6e, 6h, and a plurality of cylinder devices 8a, 8d, having a stroke twice that of the two cylinder devices 8b, 8c, 8f, 8g, 8e and 8h.
[0006]
According to the first aspect of the present invention, the rock drilling machine includes a plurality of rods and includes rod moving means for moving the rods in the parallel direction. Even when the size changes and the spacing between the holes for inserting the hydraulic wedges is different, the spacing between the rods can be changed by simply operating the rod moving means. It is no longer necessary to insert a rock drill, and it is possible to suppress a decrease in work efficiency and an increase in construction cost.
Also, the rod mounted on the mounting table moves by moving the mounting table by expanding and contracting the cylinder device, so that the rod does not become a complicated mechanism, and the rod is damaged, etc. Exchange can be performed easily.
In addition, since the adjacent mounting tables are connected by two cylinder devices arranged so as to expand and contract in opposite directions, half the time taken to change the interval between the rods by one cylinder device. Thus, the distance between the rods can be changed, and the working efficiency can be improved.
In addition, since the size of one cylinder device can be reduced, mounting and replacement work is facilitated.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a rock drill according to an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 4, the rock drill 1 includes a rock drill main body 2 provided with a drive source, an operation device, and the like, a boom 3 attached to the rock drill main body 2 so as to be raised and lowered, The rotating part 4 with one end attached to the tip part, the pedestal 5 attached to the upper part of the rotating part 4, the mounting bases 6a to 6h mounted on the mounting base 5, and in parallel on the mounting bases 6a to 6h Cylinder devices 8a to 8h are provided as rod moving means for moving the mounted rods 7a to 7d and the mounting tables 6a to 6h in the parallel direction of the rods 7a to 7d.
[0012]
The rock drill main body 2 is connected to a crawler 21 serving as a driving wheel for movement, an upper portion of the crawler 21, a power unit 22 serving as a power source of each unit, and provided in front of the power unit 22. The operation room 23 etc. for performing the operation instructions are provided.
The boom 3 includes a first boom 31 connected to the power unit 22, a second boom 32 connected to the tip of the first boom 31 so as to be raised and lowered, and the like. An extendable and undulating undulation cylinder 31 a is connected to the base end side slightly from the distal end of the first boom 31.
[0013]
The rotating unit 4 includes two bearings 41 provided on the upper surface of the second boom 32, a shaft 42 provided between the bearings 41, a rotating body 43 fixed to the shaft 42, and the like. A part of the bearing 41 is embedded and fixed in the second boom 32. A motor (not shown) that rotates the shaft 42 is attached to one end of the shaft 42. The rotating body 43 has one end fixed to the shaft 42 and the other end attached to the gantry 5. That is, by driving the motor, the rotating body 43 rotates together with the gantry 5 with the shaft 42 as a rotation axis.
[0014]
As shown in FIG. 4, the gantry 5 is formed by assembling long and short frame members made of steel, for example, in a rectangular frame shape, and the short frame material 5 a located on the front side of the rock drill 1 among the gantry 5. The same number (four in FIG. 4) of mounts 6a, 6b, 6c and 6d as the rods 7a to 7d are arranged on the upper surface of the short frame member 5b located on the rear side. The same number (four in FIG. 4) of mounts 6e, 6f, 6g, 6h as 7a-7d are arranged. Here, the mounting table 6a and the mounting table 6e, the mounting table 6b and the mounting table 6f, the mounting table 6c and the mounting table 6g, and the mounting table 6d and the mounting table 6h are respectively between the short frame material 5a and the short frame material 5b. It is arranged at the opposite position. Moreover, although the mounting bases 6a-6h are not shown in figure, the guide part is formed in the back surface, the mounting bases 6a, 6b, 6c, 6d are inserted in the both-sides edge of the upper surface of the steel material 5a, and the mounting bases 6e, 6f , 6g, 6h can be moved in the left-right direction of the rock drill 1 by being fitted into both side edges of the upper surface of the steel material 5b.
[0015]
Moreover, the recessed part 5c for arrange | positioning cylinder apparatus 8a-8d is formed in the upper surface of the short frame material 5a along the longitudinal direction of the short frame material 5a, ie, the left-right direction of the rock drill 1, and a short frame On the upper surface of the material 5b, concave portions 5d for arranging the cylinder devices 8e to 8h are formed along the left-right direction of the rock drill 1. Cylinder devices 8a, 8b, 8c and 8d are disposed in the recess 5c, and cylinder devices 8e, 8f, 8g and 8h are disposed in the recess 5d. The cylinder device 8b and the cylinder device 8c, and the cylinder device 8f and the cylinder device 8g are arranged so as to expand and contract in opposite directions. Here, the cylinder devices 8a, 8d, 8e, and 8h have the same stroke, and the cylinder devices 8b, 8c, 8f, and 8g have the same stroke. Further, the cylinder devices 8b, 8c, 8f, 8g have a shorter stroke than the cylinder devices 8a, 8d, 8e, 8h.
[0016]
The four mounting tables 6a, 6b, 6c, 6d on the short frame material 5a are connected by cylinder devices 8a, 8b, 8c, 8d, respectively, and the four mounting tables 6e, 6e, 6f, 6g, and 6h are connected by cylinder devices 8e, 8f, 8g, and 8h, respectively.
[0017]
Here, the connection mechanism between the cylinder devices 8a to 8h and the mounting tables 6a to 6h will be described. The tip of the piston rod of the cylinder device 8a is connected to the mounting table 6a, and the base end of the cylinder of the cylinder device 8a is mounted. It is connected to the stage 6b. The tip end of the piston rod of the cylinder device 8b is connected to the mounting table 6b, and the base end portion of the cylinder of the cylinder device 8b is connected to the short frame material 5a so as to be positioned approximately at the center in the longitudinal direction of the short frame material 5a. ing. The tip of the piston rod of the cylinder device 8c is connected to the mounting table 6c, and the base end of the cylinder of the cylinder device 8c is connected to the short frame material 5a so as to be located at the approximate center in the longitudinal direction of the short frame material 5a. ing. The tip of the piston rod of the cylinder device 8d is connected to the mounting table 6d, and the base end of the cylinder of the cylinder device 8d is connected to the mounting table 6c.
The connecting mechanism between the mounting tables 6e, 6f, 6g, 6h and the cylinder devices 8e, 8f, 8g, 8h is the connecting mechanism between the mounting tables 6a, 6b, 6c, 6d and the cylinder devices 8a, 8b, 8c, 8d. Since it is the same as that of FIG.
[0018]
The rods 7 a to 7 d are formed from a rod that is long in the front-rear direction of the rock drill 1, a bit 71 for excavating the rock mass is provided at the distal end, and the proximal end is connected to the impacting device 9. For example, the striking device 9 vibrates the rods 7a to 7d, and since the structure thereof is known, the description thereof is omitted. Moreover, the rod 7a is mounted on the mounting table 6a and the mounting table 6e, and is fixed to the mounting table 6a and the mounting table 6e by a fastener such as a bolt. Similarly, the rod 7b is fixed to the mounting table 6b and the mounting table 6f, the rod 7c is fixed to the mounting table 6c and the mounting table 6g, and the rod 7d is fixed to the mounting table 6d and the mounting table 6h.
[0019]
Next, a method for moving the rods 7a to 7d will be described.
The cylinder devices 8a, 8d, 8e, and 8h are extended by the moving distance, and the cylinder devices 8b, 8c, 8f, and 8g are extended by half of the moving distance.
By extending the cylinder devices 8a to 8h, the interval between the mounting tables 6a to 6h is increased in conjunction with the cylinder devices 8a to 8h, and the interval between the rods 7a to 7d is also increased. Here, between the rod 7b and the rod 7c, the cylinder device 8b and the cylinder device 8c, or the cylinder device 8f and the cylinder device 8g are arranged so as to expand and contract in opposite directions, so that the extension length is desired to be widened. Even if the distance is half, the distance between the rod 7a and the rod 7b and the distance between the rod 7c and the rod 7d are finally the same. Since the same applies to the method of reducing the distance between the rods 7a to 7d, the description is omitted.
Further, the cylinder devices 8a, 8b, 8c, and 8d and the cylinder devices 8e, 8f, 8g, and 8h may be controlled separately or may be linked by a single control device.
[0020]
According to the rock drill 1 of the present embodiment, the rock drill 1 includes a plurality of rods 7 a to 7 d, and cylinder devices 8 a to 8 h that move the rods 7 a to 7 d in the left-right direction of the rock drill 1. The cylinder devices 8a to 8h are operated even when the hardness of the rock mass and the size of the tunnel change during the rock drilling operation and the intervals between the holes for inserting the hydraulic wedges are different. It becomes possible to change the space | interval between each rod 7a-7d only by making it unnecessary, and it becomes unnecessary to throw in another rock drill, and the fall of work efficiency and the increase in construction cost can be suppressed.
[0021]
Moreover, since the rods 7a-7d mounted on the mounting bases 6a-6h move by expanding / contracting the cylinder devices 8a-8h and moving the mounting bases 6a-6h, the rods 7a-7d are made into a complicated mechanism. As a result, the rods 7a to 7d can be easily replaced when they are damaged.
[0022]
Further, since the adjacent mounting tables 6a to 6h are connected by two cylinder devices 8a to 8h arranged so as to expand and contract in opposite directions, the rods 7a to 7d are connected by one cylinder device 8a to 8h. Since the interval between the rods 7a to 7d can be changed in half the time required to change the interval, the working efficiency can be improved.
Moreover, since the size of the cylinder devices 8a to 8h per one can be reduced, mounting and replacement work is facilitated.
[0023]
The present invention is not limited to the above embodiment. For example, the number of rods 7a to 7d is not limited to four, and any number may be provided as long as it is within an allowable range. Further, the rod moving means is not limited to the cylinder devices 8a to 8h, and may be a mechanism in which gears or the like are combined. Moreover, in the said embodiment, although the case where the space | interval between each rod 7a-7d was made equal was demonstrated, you may operate cylinder apparatus 8a-8h so that each space | interval may differ.
Moreover, you may arrange | position the front-end | tip part of each rod 7a-7d by shifting in the front-back direction of the rock drill 1. In that case, if it arrange | positions so that a part of projection cross section of the front-end | tip part of rod 7a-7d may overlap, a continuous hole can be drilled in a rock mass. Furthermore, the rock drill 1 may be of any type such as an impact type, a rotary type, and a rotary impact type. In addition, the design can be freely changed as long as the gist of the invention is not changed.
[0024]
【The invention's effect】
According to the first aspect of the present invention, the rock drilling machine includes a plurality of rods and includes rod moving means for moving the rods in the parallel direction. Even when the size changes and the spacing between the holes for inserting the hydraulic wedges is different, the spacing between the rods can be changed by simply operating the rod moving means. It is no longer necessary to insert a rock drill, and it is possible to suppress a decrease in work efficiency and an increase in construction cost.
Also, the rod mounted on the mounting table moves by moving the mounting table by expanding and contracting the cylinder device, so that the rod does not become a complicated mechanism, and the rod is damaged, etc. Exchange can be performed easily.
In addition, since the adjacent mounting tables are connected by two cylinder devices arranged so as to expand and contract in opposite directions, half the time taken to change the interval between the rods by one cylinder device. Thus, the distance between the rods can be changed, and the working efficiency can be improved.
In addition, since the size of one cylinder device can be reduced, mounting and replacement work is facilitated.
[Brief description of the drawings]
FIG. 1 is a side view of a rock drill according to an embodiment of the present invention.
FIG. 2 is a front view seen through a part of a rock drill when the interval between rods in the embodiment is widened.
FIG. 3 is a front view of a portion of the rock drill when the distance between the rods in the embodiment is shortened.
FIG. 4 is a plan view of a part of the rock drill according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Jackhammer 6a-6h Mounting stand 7a-7d Rod 71 Bit 8a-8h Cylinder apparatus (rod moving means)

Claims (1)

A rock drill in which a plurality of rods with a bit attached to the tip are arranged in parallel
A plurality of mounting tables for mounting each rod;
Rod moving means for connecting adjacent mounting tables and moving each mounting table in the parallel direction of the rods by expansion and contraction;
A platform that supports each mounting table so as to be movable in the parallel direction of the rods;
A pivot part that is pivotally provided at the tip of a boom attached to the rock drill main body so as to be raised and lowered, and supports the gantry, and
The rod moving means is
It is fixed at the center of the connecting part between the rotating part and the gantry, and is arranged so as to expand and contract in opposite directions, and is connected to the mounting tables facing each other across the center of the connecting part. Two cylinder devices having a stroke;
A plurality of cylinder devices that connect other adjacent mounting tables and have a stroke twice that of the two cylinder devices;
A rock drill characterized by comprising.

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