JP3108892B2 - Rod feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boring rod supplying apparatus for an automatic boring apparatus, and more particularly to a rod supplying apparatus capable of sequentially supplying a large number of rods to an automatic boring apparatus and enabling unmanned boring to a predetermined depth. .

[0002]

2. Description of the Related Art Some automatic boring devices have been proposed so far, for example, Japanese Patent Publication No. 1-57236 and Japanese Patent Application Laid-Open No. 63-315794. Are integrated with the boring device, and the number of rods that can be stored is small and the supply amount is limited. It is.

[0003]

However, manually transporting the rod or performing replenishment work is not only inefficient in work efficiency, but also difficult due to heavy labor. Especially in a place with bad environment, for example, a narrow inclined tunnel, etc.
Such a manual rod transport and replenishment operation was painful due to extremely heavy labor, and was one of the most hated operations of workers. The present invention has been made in view of the above circumstances, and provides a rod supply device capable of accommodating a large amount of rods and sequentially supplying the rods, thereby solving the above-described inconvenience.

[0004]

To achieve the above object, according to an aspect of the present invention, in the rod supply device for supplying the rods for bowling automatic boring device, the autobaud
Has a detachable to the ring device, the rod maintains a number and column set upright in the vertical direction, a rod containers sequentially feeding the rod in position, between the rod container and automatic boring device, the rod And a rod handler for taking out one by one and supplying the same to the automatic boring device and collecting the rod from the automatic boring device .

[0005] The rod container is provided with a caterpillar that is driven to rotate, and a rod support gripping the plurality hotel rods at predetermined intervals on the outer circumference of the caterpillar, each rod
The support includes a rod clip for gripping the rod and
Cushion pees that support the standing state of the gripped rod
And a rolling tool is provided at the lower end.

The rod handler has a horizontally long guide rail.
And a slider that moves along this guide rail,
The telescopic arm provided on this slider and this arm
Rod clamp provided at the tip of the
And a tip.

[0007]

In the rod container, a large number of rods can be held in a row in the vertical direction. The rod handler is
Take out rods one by one between the rod container and the automatic boring device and supply them to the automatic boring device.
The rod can be retrieved from the automatic bowling device.

[0008] When the rod container is composed of an infinite rail rotatably driven by a drive source, and a rod support for gripping a plurality of rods arranged side by side at predetermined intervals on the outer periphery of the infinite rail, the rod is a rod. A large number can be held by the support, and the rod can be moved by rotating the endless rail.

When the rod support is composed of a rod clip for gripping the rod and a cushion piece for supporting the rod, the rod can be gripped by the rod clip, and the position of the rod can be fixed by the cushion piece. Further, if the rolling elements are provided at the lower ends of the rod supports provided in parallel, the rod can be smoothly moved by the infinite rail.

[0010] A rod handler is provided with a frame erected in parallel to the base, a guide rail suspended between the frames, a slider slidable along the guide rail, and a telescopic slider provided on the slider. When the arm is constituted by the arm and the rod clip provided at the tip of the arm, the rod can be held by the rod clip, and the held rod can be moved by the slider.
Therefore, in the rod clip, when the arm is extended, the rod of the rod container is held, and the held rod is shortened and taken out and moved to the position of the automatic boring device by the slider, where the arm is extended to automatically boring the rod. It can be supplied to the excavation position of the device, and the rod can be recovered from the automatic boring device by the reverse operation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 shows a rod feeder 1 according to the present invention.
FIG. 2 is a schematic plan view showing an arrangement relationship between the automatic boring apparatus 2 and the automatic boring apparatus 2. The rod supply device 1 includes: a rod container 3;
The automatic boring apparatus 2 is provided with a rod handler 4 in front thereof as shown in FIG.
Is located, and the rod container 3 is located on its side,
The position of the rod container 3 can be reversed from that of FIG. 1 according to the situation of the work space at the site, and at that time, the position of the rod handler 4 can be changed accordingly.

The rod container 3 and the rod handler 4 constituting the rod supply device 1 are detachably mounted on the automatic boring device 2 so that the rod container 3 and the rod handler 4 can be separated from the automatic boring device 2 and can be moved and transported. For example, the bases of the rod container 3 and the rod handler 4 have a plurality of boss holes and bolt holes, and are attached to the base 6 of the automatic boring device 2 by screws. In particular, the base of the rod container 3 is provided with a plurality of boss holes and bolt holes having the same shape on both sides thereof, so that the base can be assembled by screwing on either side of the automatic boring device 2.

FIG. 2 is a side view showing an embodiment of the present invention, and specifically shows a state in which the rod feeding device 1 according to the present invention is mounted on the automatic boring device 2 in the positional relationship shown in FIG. Is shown in The automatic boring device 2 includes a base 6, a drill head 7, a spindle 8, a water swivel 9, a guide frame 10, a holder 11, a clamp 12, and the like that support the device as shown in FIG. Japanese Patent Publication No. 1-57236, JP-A-6
Since it is the same as the conventionally known one shown in 3-315794 and the like, a detailed description thereof will be omitted.
And FIG.

The base 6 supports the rod container 3 and constitutes the rod supply apparatus 1 according to the present invention.
The rod handler 4 is detachably attached to the base 6. The drill head 7 is a feeding device (not shown)
As a result, the rod R is connected to the spindle 8 so as to be rotated, and the drill head 7 advances to apply a load to the bit provided at the tip of the rod. That is, the rod R having the bit connected to the tip is connected to the spindle 8 and is provided with rotation and feed for excavation. In this case, there is a percussion type in which not only rotation and advancement but also a blow are given. Then, the rod R is excavated while being successively added according to the excavation depth. Further, a water supply source, for example, a pump is connected to the water swivel 9, and water is supplied to a rod during boring. In the figure, reference numeral 5 denotes a central processing unit (CPU), all of which are controlled by this device 5.

As shown in FIGS. 3 to 6, the rod container 3 has two upper and lower endless rails 14 driven to rotate by a rotary drive actuator 13 (hereinafter simply referred to as an actuator), and is attached to the endless rails 14. And a rolling tool 21.

The rod supports 15 are for holding the rods R, are located on the outer periphery of the endless rail 14, and are arranged side by side at predetermined intervals. The rod support 15 is not particularly limited as long as it can clamp and hold the rod R. An example is the rod clip 16. As shown in FIG. 5, the rod clip 16 is provided with a spherical body 16c which is urged by a spring 16b and which can be moved in and out of the opening of a U-shaped clip body 16a. When the sphere 16c is inserted from the opening, the sphere 16c is immersed against the spring 16b, and the rod R is inserted and held by the clip body 16a.
When the ball passes through c, the sphere 16c is prevented from coming off the rod R by the spring 16b. This rod clip 16
Are provided in the vertical direction, and the rod R is clipped by the rod clip 16 and held vertically.

The bottom of the rod clip 16 has a cushion piece 1 for keeping the rod in a constant position in the vertical direction.
7 are provided. The cushion piece 17 is provided with a cushion by a coil spring 19, is positioned directly below the axis of the rod R held by the rod clip 16, and functions to always lift the rod R by the force of the coil spring 19. That is, as can be inferred from the plan view of the rod container 3 in FIG. 4 and FIG. 3, when the rod handler 4 pushes the rod R into the rod support 15, the rod clip 16 and the cushion piece 17 are pushed by the rod R and retracted. When R completely enters the rod clip 16, the sphere 16c is restored, and when the rod handler 4 releases the rod R, the cushion piece 17 is restored to the home position and the height of the rod R is kept constant. As shown in FIG. 5, the front surface of the cushion piece 17 has an inclined surface 17a even if the lower end of the rod R is displaced.
It is preferable because it is guided along a.

Further, the rod container 3 is provided with a rod detecting sensor 20, and the control of the actuator 13 for rotating and driving the infinite rail 14 is performed by the CPU 5 based on data of the rod detecting sensor 20. That is, when the rod R is to be supplied, the rod detection sensor 20
Is "present", the actuator 13 is operated until the rod support 15 reaches the tip A of the rod container 3, and when the rod R is to be recovered, the actuator 13 is operated until the data becomes "absent". .

The rolling tool 21 is provided at the lower end of the rod support 15 so that the rolling tool 21 can move smoothly without friction when the endless rail 14 is driven. There are various types of rolling tools 21. One example is an omni-directional sliding conveyance tool (caster) having a ball bearing structure.
2a and nut 22b. With this rolling tool 21, each rod support 15 can move smoothly on the base 6a of the rod container 3 as the infinite rail 14 is driven.

The rod container 3 has a base 6a
Is attached to the automatic boring device 2 by screwing it to the base 6 of the automatic boring device 2. In this case, the base 6a of the rod container 3 is provided with a plurality of boss holes and bolt holes (both not shown) having exactly the same shape at symmetrical positions on both sides thereof. But it can be attached. It is preferable to provide a transportation means such as a carrier for transportation on the base 6a of the rod container 3 because the movement and replacement of the rod container 3 can be easily performed without requiring any labor.

The rod handler 4 takes out the rods R one by one between the rod container 3 and the automatic boring device 2 and supplies them to the automatic boring device 2, or collects the rod R from the automatic boring device 2. Things
Frames 23, 2 erected as shown in FIGS.
3, a guide rail 25, 25 suspended between the frames 23, 23, a slider 24 sliding along the guide rail 25, a telescopic arm 28 provided on the slider 24, It is composed of a rod clip 27 or the like that grips a rod R provided at the tip of the arm 28.

The automatic boring apparatus 2 is provided with a base 6b, but need not necessarily be connected to the rod container 3. In addition, the rod container 3 is provided on the base 6b.
A plurality of boss holes and bolt holes (both not shown) are provided so as to be mounted corresponding to the mounting positions.

The frames 23, 2 erected on the base 6b
The guide rail 25 suspended between the three
Are slidably provided. In this example, the slider 2
A guide roller 26 that sandwiches the guide rail 25 from both the upper and lower sides is provided on the back surface of 4, and is slidable along the guide rail 25.

The movement of the slider 24 is performed directly by a drive source or via a transmission mechanism. In this example, the slide actuator (cable cylinder) 29
The control of the slide actuator 29 is performed by the CPU 5 of the automatic boring device 2.

The position of the slider 24 may be controlled by a method using a rotary encoder, a magnetostrictive sensor, a proximity switch, a potentiometer, or the like.
The stroke end of the slider 24 is set to the working position. In other words, the stopper (not shown) of the slider 24 is adjusted so that one end of the movement of the slider 24 coincides with the tip A (rod removal position) of the rod container and the other end coincides with the excavation center. ing. In this way, there is no need to control the position on the way, and the case where the mounting position of the rod container 3 to the automatic boring device 2 is changed to the opposite side and the mounting position of the rod handler 4 is changed accordingly. It is convenient.

The configuration in which the slider 24 is slidable is not limited to the above embodiment. For example, although the guide rail is used, this may be a guide shaft, or a guide groove may be provided and moved along the guide groove.

The arm 28 provided on the slider 24
It is configured to be stretchable. In this embodiment, as shown in FIGS. 7 and 8, two arm pieces 28a and 28b are pivotally connected to each other by a pivot 30, and the arm pieces 28a and 28b are provided to face each other. And the other end is a rod clip 27
And the cylinder 3 between its opposing pivots 30, 30.
1 is interposed, and the cylinder 31 is made to expand and contract by making it expand and contract.

At the end of the arm 28, a rod clip 27 is provided. The rod clip 27 is openable and closable so that the rod can be clamped and held when closed. An example will be described with reference to FIGS. 9 and 10. The clamp member 27 having a semicircular concave portion 32 is described.
a and 27b are provided so as to be able to move forward and backward so as to face each other, and the clamp members 27a and 27b are moved forward and backward by the cylinder 33. Note that the same reference numerals in FIGS. 7 and 8 denote the same items in FIG.

Although illustration is omitted, the slider 24 and the arm 28 are provided with a shock absorbing mechanism for absorbing an impact at each stroke end. By providing a rotary actuator and a rotation angle detection sensor between the rod clip 27 and the rod clip 27, the rod clip 27 can be adjusted to the rod supply angle or the rod recovery angle. In this case, the center of change in the excavation angle of the automatic boring device 2 and the center of rotation of the rod clip 27 are made to coincide at the same height.

Next, the operation of the above embodiment will be described. When the first single rod having a bit attached to its tip is set in the automatic boring device 2 and preparation for excavation is completed, the starting operation of the operator is started. To start automatic excavation work.

The central processing unit (CPU) 5 of the automatic boring apparatus 2 has a rod R at a takeout position A of the rod container 3 by a rod detection sensor 20 (see FIGS. 3 and 4) provided on the rod container 3. Information on whether or not there is a rotation drive actuator 1 for the rod container 3
3 is controlled so that the rod support 15 having the rod R is always located at the rod take-out position A during supply. When the rod R is collected, the rod support 15 without the rod R is always positioned at the take-out position (rod mounting position in this case) A.

The automatic boring apparatus opens the control valve B for boring water shown in FIG. 1 and detects that the amount of water supplied to the bit is equal to or larger than the set amount by the flow rate detector C provided in the middle of the water supply line. Start excavation. When the water amount is equal to or less than the set amount, the water amount shortage is displayed on the operation panel of the CPU 5 to issue a warning to the operator and maintain the stopped state.

When the excavation of one rod is completed and the replenishment of the rod R becomes necessary, the excavation is interrupted, the control valve B for the boring water is closed, the rod R is gripped by the holder 29 of the automatic boring device 2 and the drill is carried out. The connection between the head 8 and the rod R is released, the drill head 8 is retracted, and a signal for supplying the rod R is sent to the rod handler 4.

When the rod handler 4 receives the above signal and laterally moves the slider 24 and reaches the stroke end, a signal flows to the arm control unit, and drives the cylinder 31 to extend the arm 28 to the takeout position A of the rod container 3. Then, the rod grip 29 is closed and the rod is gripped. When the rod grip 29 grips the rod and finishes closing, the arm 28 contracts as before and a signal is returned to the slide actuator 27, and the slider 24 holding the rod R moves to the stroke end on the opposite side, that is, the excavation center position. Return and send a signal to the arm control unit of the rod handler again.

The position A at which the rod container 3 is taken out.
When the rod R accommodated in the rod support 15 is taken out from the rod support 15, the arm 28 of the rod handler contracts and the rod gripped by the rod grip 29 causes the rod grip 29 of the rod support 15 and the spring 19 of the cushion piece 17 to move. Push the rod R to release it from the holding state.

Next, when a signal is sent from the automatic boring device 2 to the rod handler 4, the arm 28 is extended and the gripped rod R is held at the boring center D at the excavation center position, and the signal is returned to the automatic boring device 2 and the spindle 11 is returned. Wait for the screw connection to complete.

When the rod handler 4 receives the signal indicating the completion of the screw connection, the rod handler 4 opens the rod grip 29 and then the arm 28
Is returned to the original position to return the slider 24 to the initial position, and a series of operations of the rod handler 4 is completed. After that, repeat the above operation unmannedly to the set depth, and when it reaches the set depth, stop digging automatically, issue a digging completion signal and display it on the operation panel, close the boring water control valve and collect rods Move on to

A description will be given of the rod collecting operation after the excavation is completed. First, the automatic boring apparatus 2 operates the holder 30 and the spindle 11 (FIG. 5A) to put the last supplied rod R before the supplied rod. Cut off from R,
The spindle 11 is also released from engagement with the rod R by operating the power tongue, and is stopped at a position where the rod R is passed to the rod handler 4 to send a signal to the rod handler 4 for reception.

When the rod handler 4 extends the rod grip 29 to the boring center D to grip the rod 10, and returns a signal to the drill head 8 for reversely rotating the spindle 11 (FIG. 5a) of the drill head 8, the drill head 8 Sends a signal to the rod handler 4 to rotate the spindle 11 in the reverse direction to release the rod, retreat, and return to the initial state immediately before rod recovery.

The rod handler 4 stores the rod R in the rod container 3 and returns to the initial state.
, The drill head 8 moves forward and continuously moves to the upper end rod R of the rod group (string) which is underground.
And the rod is recovered in the rod handler 4 by the same operation as described above. Thereafter, the above operation is repeated until the first supplied rod R is pulled up.

Before the rod R supplied to the automatic boring device 2 is pulled up, the rod R in the rod container 3 is pulled up.
Is full, the automatic boring device 2 has to interrupt the rod collection operation and wait for the replacement of the rod container 3, but if the empty remaining amount of the rod container 3 becomes small in order to shorten the interruption time (normally). (4 to 5) A warning is issued to urge the operator to replace the rod container 3.

Next, the operator removes the rod container 3 filled with the rods R from the automatic boring device 2, attaches an empty rod container 3 prepared separately, and releases the rod collecting operation interrupted state of the automatic boring device. Resume collection work.

Further, the wear condition of the bit is judged from the increase in the excavation resistance and the decrease in the excavation rate, and when the bit becomes unsuitable for the stratum, the excavation is automatically stopped, the bit exchange is displayed, and the drilling water is displayed. The control valve B (FIG. 1) is closed, and the process proceeds to the rod collecting operation similar to the above.

A large number of the rods R housed in the rod container 3 can be sequentially supplied to the automatic boring device 2 by the rod handler 4, and the rods R of the automatic boring device 2 are collected by the rod handler 4, It can be stored in the container 3.

[0045]

As described above, according to the present invention, in a rod supplying apparatus for supplying a boring rod to an automatic boring apparatus, a plurality of rods are vertically arranged in a row in a vertical direction, and the rods are held at predetermined positions. A rod container that can be sequentially unwound and a rod handler that can take out rods one by one, supply the rods to the automatic boring device, and collect the rods from the automatic boring device between the rod container and the automatic boring device. Therefore, a large number of rods stored in the rod container can be sequentially supplied to the automatic boring device by the rod handler, and the rods of the automatic boring device can be collected by the rod handler and stored in the rod container. Therefore, since a large number of rods required up to the planned excavation depth can be unmanned, safely and efficiently supplied to the automatic boring device and recovered from the automatic boring device, not only the work efficiency is improved, but also the rod by hand is improved. From transportation, replenishment, and collection operations.
Further, since the rod container and the rod handler are detachable from the automatic boring device and can be transported separately, it is convenient for transportation.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an arrangement relationship between a rod supply device and an automatic boring device according to the present invention.

FIG. 2 is a side view showing an embodiment of the present invention.

FIG. 3 is a side view of the rod container.

FIG. 4 is a plan view of a rod container.

FIG. 5 is a sectional view of a rod clip portion.

FIG. 6 is a sectional view of a cushion piece portion.

FIG. 7 is a front view of the rod handler.

FIG. 8 is a sectional view taken along line YY of FIG. 7;

FIG. 9 is a plan view showing a rod clip of the rod handler.

FIG. 10 is a front view showing a rod clip of the rod handler.

FIG. 11 is a schematic side view showing an example of a conventional automatic boring device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rod supply apparatus 2 Automatic boring apparatus 3 Rod container 4 Rod handler 5 Central processing unit 13 Rotation drive actuator 14 Infinite rail 15 Rod support 16 Rod clip 17 Cushion piece 20 Rod detection sensor 21 Rolling tool 24 Slider 27 Rod clip 28 Arm

Claims (2)

(57) [Claims] 1. A rod supply device for supplying a boring rod to an automatic boring device , wherein the rod supplying device is detachably attached to the automatic boring device. and successively feeding the rod container to a predetermined position, between the rod container and automatic boring device comprises a rod handler recovering from the automatic boring device supplying and rod automatic boring device is taken out one by one the rod, The rod container has an infinite rail that is driven to rotate,
A plurality of rods attached at predetermined intervals on the outer circumference of the rail
And each rod support includes a rod.
Rod clip to be gripped and upright state of gripped rod
Equipped with a cushion piece that supports
A rod supply device provided with a rolling tool . 2. The system according to claim 1, wherein the rod handler has a horizontally long guide rail.
And a slider that moves along this guide rail
And an extendable arm provided on the slider.
Rod that is provided at the tip of the arm and grips the rod
The rod supply device according to claim 1, further comprising a clip .