JP4249107B2 - Rod-shaped member feeding device - Google Patents

Description

  The present invention relates to an apparatus for feeding a rod-shaped member such as a filler injection pipe into a hole cut in a natural ground mainly in a rock bolt driving operation.

The installation of rock bolts on the tunnel wall surface is effective for preventing deterioration of the natural ground as a tunnel deformation countermeasure work, and for preventing the progress of deformation due to plastic pressure and partial pressure, etc., and preventing the peeling of lining pieces. In the construction of rock bolts in tunnels, in the case of tunnels with a relatively large cross section, the ground is drilled with a drilling machine that drills holes for blasting charges and holes for rock bolts called drill jumbo. After injecting the filler into the hole, a lock bolt is inserted into the hole and set (for example, see Patent Document 1).
JP 5-311996 A (page 2-3, FIG. 1)

  However, in most cases, the operator injects the filler into the hole by approaching the lock bolt hole near the face on the work floor and inserting a filler injection hose into the hole to inject the filler. This is one of the most dangerous tasks when the ground is unstable.

  The present invention has been made in view of the above-mentioned problems, and is a simple and versatile bar-shaped member feeding device that can mechanize the filling material injection work simply by being mounted on a rock bolt drilling machine such as a conventional drill jumbo. The purpose is to propose a device and to improve the safety in the rock bolt driving work.

In order to achieve the above object, the rod-shaped member feeding device according to the present invention is mounted on a shaft that transmits the rotation / blowing force of the drifter of the rock bolt drilling machine, and rotates the shaft around an orthogonal axis orthogonal to the shaft. And a pinch roller that holds the rod-shaped member and feeds the rod-shaped member back and forth by rotating about the orthogonal axis as a rotation axis.
In the present invention, the pinch roller is held on the pinch roller by rotating the pinch roller with the orthogonal axis as the rotation axis through a driving force conversion mechanism that converts the rotation of the drifter shaft into rotation about the orthogonal axis orthogonal to the shaft. The made bar-shaped member is fed into the hole. That is, the feeding operation of the rod-shaped member is mechanized by using the driving force converting mechanism mounted on the shaft of the drifter to utilize the driving force of the rotation of the drifter for the longitudinal movement of the rod-shaped member. Thereby, for example, when the rod-shaped member is an injection pipe for filling material that fills the lock bolt hole, it is not necessary for the operator to inject the filling material into the hole at risk, thereby ensuring work safety. be able to. In addition, since it is a highly versatile device that can be mounted on a conventional rock bolt drilling machine, it is not necessary to develop a special lock bolt placing dedicated machine, and the cost can be reduced.

In the rod-shaped member feeding device according to the present invention, the driving force conversion mechanism is meshed with a first bevel gear that rotates with a bevel rod connected to a shaft of the drifter as a rotation axis, and the orthogonal shaft. You may provide the 2nd bevel gear which rotates around.
In the present invention, a bevel gear (bevel gear) is used for the driving force conversion mechanism and a simple configuration is realized, thereby realizing a highly reliable rod-shaped member feeding device.

  According to the present invention, the feeding operation of the rod-shaped member can be mechanized by using the driving force conversion mechanism mounted on the shaft of the drifter to utilize the driving force of the rotation of the drifter for the back-and-forth movement of the rod-shaped member. Thereby, for example, safety in the rock bolt driving operation can be ensured. In addition, since it is a highly versatile rod-shaped member feeding device that can be mounted on a conventional lock bolt drilling machine, it is not necessary to develop a special lock bolt driving machine and cost can be reduced.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an injection pipe delivery (rod-like member delivery) device according to the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a state in which an injection pipe delivery device according to the present invention is mounted on a drifter. FIG. 2 is a side view of an injection pipe delivery device according to the present invention, and FIG. 3 is a front view thereof.

A rock bolt drilling machine (not shown) for drilling a rock bolt hole in a natural ground includes a boom (not shown) that can be swung horizontally and can be raised and lowered. Connected to the tip.
A drifter 11 that mounts a drilling rod (not shown) and applies rotation and striking force to the drilling rod is mounted on the guide cell 12 that exceeds 5 m in length, and the drifter 11 is moved back and forth along the guide cell 12. Can be moved to. When drilling a natural ground, a drilling rod is connected to the tip of the shaft 11a of the drifter 11, and a rotation / striking force is applied to the drilling rod via the shaft 11a.

  When injecting a filler such as mortar or cement milk into the hole drilled in the ground by the drilling rod, the injection pipe feeding device 1 is installed at the tip of the shaft 11a of the drifter 11 instead of the drilling rod. Installing.

The injection pipe delivery device 1 includes a driving force conversion mechanism 2 and a pair of pinch rollers 7 and 7 ′ arranged side by side on a housing 6 containing the driving force conversion mechanism 2 as main components.
The driving force conversion mechanism 2 is engaged with the bevel rod 3 connected to the shaft 11a of the drifter 11 via the connecting portion 3a, the first bevel gear 4 that is attached to the bevel rod 3, and the first bevel gear 4. The second bevel gear 5 rotates with the orthogonal axis 8 orthogonal to the rotation axis.
The bevel rod 3 is pivoted between opposing side plates 6a, 6a constituting the housing 6. The orthogonal shaft 8 passes through the top plate 6 b of the housing 6, and the second bevel gear 5 is attached to the inside of the housing 6 and the pinch roller 7 is attached to the outside of the housing 6.
The pair of pinch rollers 7 and 7 'are provided to move the injection pipe 10 as a rod-shaped member back and forth, and the injection pipe 10 is interposed between the pinch rollers 7 and 7' whose outer periphery is formed of rubber. Moving. An auxiliary roller 9 for supporting the injection pipe 10 is installed on the top plate 6b.
The injection pipe 10 is a steel pipe or a vinyl chloride pipe having a length of about 4 to 6 m, and a hole for ejecting a filler is formed at the tip.
The bottom plate 6c of the housing 6 is fixed to a support frame 13 that moves on the guide cell 12 so that the housing 6 does not rotate together with the shaft 11a.

  In this embodiment, by using the first bevel gear 4 and the second bevel gear 5 in the driving force conversion mechanism 2 and having a simple configuration, the injection pipe delivery device 1 with high reliability is realized.

Next, operation | movement of the injection pipe delivery apparatus 1 which concerns on this invention is demonstrated.
When the shaft 11a of the drifter 11 is rotated, the bevel rod 3 connected to the shaft 11a through the connecting portion 3a rotates, and the first bevel gear 4 that is mounted on the bevel rod 3 rotates. At the same time, the second bevel gear 5 meshing with the first bevel gear 4 rotates, and the pinch roller 7 having the same axis 8 as the second bevel gear 5 starts to rotate. When the tip of the injection pipe 10 is inserted between the pinch rollers 7 and 7 ', the injection pipe 10 is sent forward by the pinch rollers 7 and 7'.
On the other hand, in order to move the injection pipe 10 backward, the shaft 11a of the drifter 11 may be rotated in the reverse direction.

Next, an outline of the rock bolt driving operation using the injection pipe delivery device 1 according to the present invention will be described.
First, the tip of the drilling rod is adjusted to the drilling position by operating the boom and guide cell 12 of the rock bolt drilling machine. Then, the natural ground is drilled by the drilling rod while the drifter 11 is advanced along the guide cell 12. When the drilling is completed, the drilling rod is pulled out from the hole while the drifter 11 is retracted along the guide cell 12.
Next, the drilling rod is removed from the shaft 11a of the drifter 11, and the injection pipe feeding device 1 is mounted on the shaft 11a. The shaft 11a is rotated, and the injection pipe 10 is sent forward and inserted into the hole. A pressure hose (not shown) is connected to the rear end of the injection pipe 10, and the filler is pumped from a pressure feeder (not shown) to inject the filler into the hole. Thereafter, the shaft 11a of the drifter 11 is reversely rotated, and the injection pipe 10 is gradually pulled out from the hole.
When filling of the filler is completed, a lock bolt (not shown) held by a clamp arm (not shown) is supplied onto the path of the drifter 11 and the drift bolt 11 is moved forward along the guide cell 12 to move the lock bolt forward. And insert the lock bolt into the hole.

  In the injection pipe delivery device 1 according to the present embodiment, by using the driving force conversion mechanism 2 mounted on the shaft 11 a of the drifter 11 to use the driving force of the rotation of the drifter 11 for the back and forth movement of the injection pipe 10, This is to mechanize the feeding work such as insertion and withdrawal. As a result, a series of dangerous operations in which workers approach the lock bolt hole near the face on the conventional work floor, insert the filler injection hose into the hole, inject the filler, and gradually pull out the hose. Can be safely performed using a lock bolt drilling machine. In addition, since the injection pipe feeding device 1 is highly versatile and can be mounted on a conventional lock bolt drilling machine, it is not necessary to develop a special lock bolt driving machine, and the cost can be reduced. .

  As mentioned above, although embodiment of the injection pipe delivery apparatus which concerns on this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably. For example, in the above embodiment, a pair of pinch rollers is used, but two or more pairs of pinch rollers may be used. In this embodiment, the member to be sent out is an injection pipe, but a lock bolt may be sent out, and in that case, it is used as a lock bolt inserting (feeding out) device.

It is a side view which shows the state which mounted | wore the drifter with the injection pipe delivery apparatus which concerns on this invention. It is a side view of the injection pipe delivery device concerning the present invention. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Injection pipe delivery (bar-shaped member delivery) apparatus 2 Driving force conversion mechanism 3 Bevel rod 3a Connecting part 4 First bevel gear 5 Second bevel gear 6 Housing 6a Side plate 6b Top plate 6c Bottom plate 7 Pinch roller 8 Orthogonal shaft 9 Auxiliary roller 10 Injection pipe 11 Drifter 11a Shaft 12 Guide cell 13 Support frame

Claims (2)

  It is attached to a shaft that transmits the rotation / blowing force of the drifter of the rock bolt drilling machine, holds the rod-shaped member, and a driving force conversion mechanism that converts the rotation of the shaft into rotation around an orthogonal axis orthogonal to the shaft, A bar-shaped member feeding device comprising: a pinch roller that feeds the bar-shaped member back and forth by rotating about the orthogonal axis as a rotation axis.   The driving force conversion mechanism includes a first bevel gear that rotates with a bevel rod connected to a shaft of the drifter as a rotation axis, and a second bevel gear that meshes with the first bevel gear and rotates about the orthogonal axis. The rod-shaped member feeding device according to claim 1, wherein

Images