JPS6022159Y2 - Drilling and implantation device for roof bolts - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for installing roof bolts in front of a drilling machine for reinforcing tunnel walls by implanting roof bolts into the rock surrounding a tunnel.

Conventionally, when tunnels are dug in bedrock, roof bolts have been widely used to prevent cave-ins and to reinforce tunnel walls.

In this method of installing roof bolts, first, a bolt hole is drilled using a bolt hole drilling machine, and then the roof bolt is inserted into the bolt hole by hand by an operator, and the roof bolt is tightened using a tool. It is fixedly installed in

In addition, in order to avoid the above-mentioned inefficient work, the bolt hole drilling machine and the bolt insertion machine are held on the same circumference of a cage, and by indexing and rotating the cage, the drilling machine A bolt insertion machine is placed opposite the bolt holes drilled in the roof, and the roof bolts are inserted and fixed by this bolt insertion machine.

However, this device has disadvantages in that the support of the bolt hole drilling machine and the bolt insertion machine is not reliable, and that the drilling accuracy is poor due to looseness due to play in each connection part, and the cost is high.

The present invention was developed in view of these drawbacks, and includes a cell mounting that supports a bolt hole punching machine and a roof bolt insertion machine so that they can be raised and lowered, and a cell mounting that is rotatable and swingable via a boom. A parallel link mechanism is interposed between the cell mounting support and the cell mounting support that is supported so that the cell mounting is supported reliably, and the swinging action of the parallel link mechanism allows the center of the roof bolt insertion machine to be An object of the present invention is to provide a roof bolt drilling/installation device that moves to the center of a bolt hole drilled by a hole punching machine and properly faces it, thereby improving and reducing the efficiency of bolt installation work.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 to 6, 1 is a roof bolt drilling/implanting device.

The drilling/implantation device 1 is connected to a traveling body 2, and is located in front of the traveling body 2 and extends around a longitudinal axis 3 (arrow A in FIG. 2,
B direction), and can be rotated in the front and back direction (arrow C in Fig. 1).
, D direction), and around a support rotation shaft 6 provided in the tangential direction of the swing circle 5 at the tip of the boom 4 (arrows E and D in FIGS. 2 and 3). F direction)
At the upper and lower ends between the cell mounting support 7, which is rotatably mounted (see the chain line position in Figure 3), and the cell mounting support 7 and the cell mounting 8, which is positioned in front of the cell mounting support 7, Parallel link mechanisms 9, 9 are interposed to swing the cell mounting 8 with respect to the cell mounting support 7 in a direction transverse to the support rotation axis 6 (directions of arrows G and H in FIG. 6); A guide cell 10 supported by the mounting 8, a bolt hole puncher 11 and a roof bolt inserter 12 each independently supported by the guide cell 10, and the parallel link mechanism 9 are swung, and the bolt hole puncher 11 and a hydraulic cylinder 14 for moving the roof bolt insertion machine 12 to the drilling position 13 (see arrow ◯ in FIG. 6).

More specifically, the boom 4 has its base end 15 attached to the front end of a bifurcated member 16 connected to the front side (the left side in FIG. 1) of the longitudinal axis 3 via a fulcrum shaft 17. It is pivotably supported by a boom tilt cylinder 18, and the rear end portion (the right end portion in FIG. 1) of the longitudinal axis 3 is connected to a boom rotation motor 20 fixedly installed inside the truck 19 of the traveling body 2.
The boom rotation motor 20 is connected to a pinion 21 that is connected to the rear part of the longitudinal axis 3 and whose one or both sides are supported by a bearing (not shown), and the pitch of the pinion 21. A rack 24 formed in the middle part of the piston rod 22, 23 so as to be parallel to each other on a circle.
．． 25 are engaged with each other, and pistons 26, 26, 27, 27 are fixed to each end of the piston rods 22, 23, and the piston rods 22, 23 are moved in mutually opposite directions (the fifth
It is formed by opposing cylinders 28, 29, such as hydraulic pressure, which rotate the pinion 21 by the action of a driving couple (see arrows J, K, L, M in the figure).

30 and 31 are fixed to the upper end of the upper boom of the two-pronged member 16, and connect the base of the boom tilt cylinder 18 and the tip of the piston rod 32 to connection shafts 33 and 34, respectively.
This is a bracket that is pivotally supported through.

The cell mounting support 7 is rotatably fitted onto a support rotation shaft 6 fixed to the tip of the boom 4, and a support rotation cylinder 35 is interposed between the cell mounting support 7 and the boom 4. The support rotation cylinder 35 has its base end and the tip of the piston rod 36 connected to a bracket 37 protruding outward from the intermediate portion of the boom 4 (to the right in FIGS. 3 and 4). The mounting support 7 is pivotally supported via connecting shafts 39 and 40, respectively, to a bracket 38 that protrudes outward from the intermediate portion of the mounting support 7 (in the same direction as the bracket 37).

The parallel link mechanisms 9, 9 have hinges 41 attached to the upper and lower ends of both sides of the cell mounting support 7.
, 41, 41. 41 and hinges 42, 42, 42 attached to the upper and lower ends of both sides of the cell mounting 8,
42, both hinges 41.41, 41, 41, 42, 42
, 42, 42 are connected and parallel link members 43, 43
, 43, 43, and further provided on the opposing inner surfaces of the cell mounting support 7 and the cell mounting 8, protruding from the fulcrum bracket 44 and the swing bracket 45, and between the two brackets 44, 45, A bell crank-shaped swing link 47 with a long hole 46 bored at one end.
The swinging link 47 has its fulcrum portion pivoted to the fulcrum bracket 44 via a connecting shaft 48, and one end thereof is connected to the swinging bracket 45 via a connecting shaft 49 inserted into the elongated hole 46. The hydraulic cylinder 14 is interposed between the other end of the swing link and a bracket 50 protruding toward the rear side of the cell mounting support 7 (to the right in FIG. 6), are the connecting shafts 51, respectively.
．． It is pivotally supported via 52.

The guide cells 10 , 10 are connected in parallel by a connecting member 53 , and their rear portions (on the right side in FIG. 1) are connected to the cell mounting 8 .
The guide cell 10.10 is supported in a vertically movable manner by a bracket 55 and a cell slide cylinder 56 installed in the cell mounting 8 via a sliding portion 54.54 of the guide cell 10.10. Pid 57. A bolt hole drilling machine 11 equipped with a rod 58 and a pneumatic feed motor 59, and a roof bolt insertion machine 12 comprising a torque wrench 60 and a pneumatic feed motor 61 are supported. bit 57
and the roof bolt 62 held by the torque wrench 60 are respectively formed to be movable forward and backward by feed motors 59 and 61 via feed screw shafts (not shown).

63 and 64 are washers and nuts of the roof bolt 62, 65 is a stopper that regulates the rising height of the guide cell 10.10, 66 and 67 are outriggers and wheels of the traveling body 1, and 68 and 69 are used for tunnels, etc. These are the track bed and the upper wall.

Next, the operation of the device of the present invention will be explained.

The roof bolt drilling/implanting device 1 is carried in advance to a work site such as a tunnel, and the outriggers 67, 67 are erected on the trackbed 68 and fixed at a position suitable for drilling bolt holes.

Further, a roof bolt 62 is attached to the torque wrench 60.

First, the attitude of the boom 4 is adjusted by driving the boom tilt cylinder 18 and the boom rotation motor 20, and the attitude of the cell mounting support 7 is adjusted by driving the support rotation cylinder 35, and the pid 57 of the bolt hole drilling machine 11 is adjusted. Fit directly below the drilling location.

Next, the cell slide cylinder 56 is driven to raise the guide cell 10.10, and the stopper 65 is pressed against the lower surface of the upper wall 69 to fix the guide cell 10.10.

Next, a bolt hole of a depth suitable for installing the roof bolt 62 is drilled in the upper wall body 69 by rotating the pit 57 by driving the bolt hole punching machine 11 and forward feeding by driving the feed motor 59. After returning the pit 57 to its original position, the hydraulic cylinder 14 is driven to move the swing link 47.
The parallel linkage mechanism 9.9 is swung to fit the upper end of the roof bolt 62 directly below the bolt hole.

Subsequently, the feed motor 61 is driven to tighten the roof bolt 6.
2 is inserted into the bolt hole, the roof bolt 62 is tightened with a torque wrench 60, and fixed by applying a washer 63 and a nut 64 to complete the installation of the roof bolt 62.

Thereafter, the torque wrench 60 is lowered, and the boom 4 and cell mounting support 7 operate in the opposite manner as described above to return to their normal state.

By moving the traveling body 1 to another position on the upper wall 69 as necessary and operating the boom 4 and others in the same manner as described above, the roof bolts 62 can be quickly and accurately installed. .

With the above configuration, the present invention ensures that the cell mounting is supported by the cell mounting via the pair of upper and lower parallel link mechanisms, so the bolt hole drilling machine and the roof bolt insertion machine do not run out and are parallel to each other. The installation structure of the hydraulic cylinder that drives the link mechanism is easy, robust and durable, and the center of the roof bolt insertion machine can be easily aligned with the center of the bolt hole at the stroke end of the hydraulic cylinder. This has the excellent effect of improving work efficiency and significantly reducing costs.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the device of the present invention, and FIG. 1 is a side view of the roof bolt drilling and implantation device, FIG. 2 is a front view of the same, and FIG. 3 is an enlarged view taken along the line ■-■ in FIG. 1. 4 is a sectional view taken along line IV-IV in FIG. 3, FIG. 5 is a partially cutaway front view of the roof rotation motor, and FIG. 6 is an enlarged plan view of the left half of FIG. 1. . 1...Drilling and implantation device for roof bolts, 2
...... Running body, 3... Front-rear axis, 4.
...Boom, 5...Boom tip swing circle, 6...Support rotation axis, 7...Cell mounting support, end... Cell mounting, 9... Parallel link mechanism, 10...
・Guide cell, 11... Bolt hole drilling machine, 12
. . . Roof bolt insertion machine, 13 . . . Drilling position of bolt hole drilling machine, 14 . . . Hydraulic cylinder of parallel link mechanism.

Claims (1)

[Scope of utility model registration request] A traveling body, a boom located in front of the traveling body, rotatable around an axis in the longitudinal direction, and supported so as to be swingable in the longitudinal direction; A cell mounting support is installed between the cell mounting support and the cell mounting, and the cell mounting support is rotatably mounted around a provided support rotation axis. A parallel link mechanism that swings in a direction transverse to an axis, a guide cell supported by the cell mounting, a bolt hole puncher and a roof bolt inserter each independently supported by the guide cell, and the parallel link mechanism. 1. A roof bolt drilling and implantation device comprising: a hydraulic cylinder that moves a roof bolt inserter to a drilling position of a bolt hole puncher;