JPH0579794B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a rod changing device that is applied to adding and recovering rods in a rock crusher.

[Conventional technology]

In the invention described in Japanese Patent Application Laid-open No. 58-189493, as shown in FIG.
The rod 4 is gripped by opening and closing the pair of pawls 20 and 21, and for positioning the center of the rod when the pair of pawls 20 and 21 are closed and the rod 4 is gripped.
In order to prevent interference between the chuck mechanism and the rod 4 when the chuck mechanism is rotated by opening the rod 4 and rotating the entire chuck mechanism, the pair of pawls 20 and 21 are connected by a link 22 when the pawls 20 and 21 are opened and closed. 21 rod 4
be positioned symmetrically about the center of the

In the device described in Japanese Utility Model Application Publication No. 61-89093, as shown in FIG.
A stopper 23 is provided so as to be positioned symmetrically with respect to the center of the rod 4 when the rod 1 is opened and closed. Also, when the claws 20 and 21 are opened, the pair of claws 2
In order to prevent the rod 4 gripped by the arms 0 and 21 from interfering with adjacent rods, a driving means 25 is provided to extend and retract the arm 24.

[Problem that the invention seeks to solve]

The conventional device described above requires a special member for positioning the center of the rod, and has problems such as a complicated chuck mechanism to prevent interference with adjacent rods or other members.

[Means for solving problems]

A rod magazine is installed parallel to the side of the guide cell of the rock crusher, has a plurality of rod accommodating parts along the outer periphery, and is rotatable one pitch at a time around a central axis, and a rod magazine is provided between the guide cell and the rod magazine. A rod gripping body and a chuck mechanism having a claw that opens and closes in opposition to the rod gripping body are provided at the lower end of an arm that is installed and swings perpendicularly to the rod gripping body.

[Operation] The chuck mechanism moves between the rod exchange position on the guide cell and the rod loading/unloading position in the rod magazine, and grips and releases the rod at both positions.

Even if the chuck mechanism is in the rod loading/unloading position within the rod magazine, as long as the claw is open, the rod and the rod magazine can be rotated to the right or left by a certain angle.

〔Example〕

An embodiment of the present invention will be explained with reference to the drawings.
Fig. 1 is a partially cutaway side view of the device of the present invention, Fig. 2 shows the cross section DD of Fig. 1, Fig. 3 shows the cross section EE of Fig. 1, and Fig. 4 shows the rod magazine. FIG. 2 is a perspective view showing a rotating means for the rod magazine.

First, in FIG. 4, 28 is a magazine rotation hydraulic cylinder for intermittently rotating the rod magazine M around its central axis 5 via a lever 29, and 30 is a pin 30' attached to the lever 29. Hydraulic cylinder for pin drive, 31
32 is a brake attached to the front end of the central shaft 5, 32 is six pin insertion holes drilled concentrically at equal intervals in the disk 33, and 2 is a spider-shaped front mounted near the front end of the central shaft 5. Six rod accommodating portions 2a for storing rods are provided at equal intervals along the outer periphery of the guide. Reference numeral 3 denotes a spider-shaped rear guide of the same shape that is attached to the rear end of the central shaft 5 so as to face the front guide 2. On the outer periphery of the rear guide 3, there are six rod accommodating parts 3a for storing rods as a front guide. It is provided in the same phase as the rod accommodating portion 2a. The front guide 2 and the rear guide 3 cooperate with the central shaft 5 to constitute a rod magazine M. In such a structure, the central axis 5 is parallel to the rock crusher and the bearing members 34a, 3 of the blankets 34, 35
The front guide 2 and the rear guide 3 are each supported by an annular member 3 at both ends thereof.
It is inserted into the circular openings 4b and 35b.

On the other hand, in FIGS. 2 and 1, there are members 34a and 3 on the tops of the brackets 34 and 35, respectively.
Rotating shafts 36, 37 are supported between 4b, 35a and 35b so as to be parallel to the guide cell 1,
These rotating shafts 36, 37 have members 34a and 34b,
A chuck mechanism is provided between 35a and 35b. The chuck mechanism includes arms 8 and 9 whose proximal ends are fixed to the rotation shafts 36 and 37,
Claw 1 provided on the tip side of these arms 8 and 9
It consists of 0,11. The proximal end of each pawl 10, 11 is pivotally connected to the tip of the arm 8, 9 by a shaft 38, 39, and a chuck for opening and closing is provided between the intermediate portion of the pawl 10, 11 and inside the arm 8, 9. Piston rods 40a, 4 of hydraulic cylinders 40, 41
The tips of the claws 10 and 11 are connected to each other, and the tips of the claws 10 and 11 can be freely opened and closed to the solid line and imaginary line positions shown in FIG. On the other hand, when the claws 10 and 11 at the tip of the arm 89 are open at the rod loading/unloading position A, even if the rod magazine M rotates, the rods 4 in the rod magazine M do not interfere and can be rotated at a constant angle to the right or left. Can be moved to the left and has rotation axis 3
6, 37 When it rotates around the center, it is the rod replacement position C.
Rod gripping bodies 12 and 13 are fixed to the rods 12 and 13, which have slopes 12a and 13a and slopes 12b and 13b, which can move without interfering with the rod 4 located in the rod 4. The rod 4 can be gripped between the two.
Further, base end portions of levers 42 and 43 are fixed to one end sides of the rotation shafts 36 and 37, respectively. The tips of piston rods 44a, 45a of hydraulic cylinders 44, 45 for arm rotation, which are rotatably supported by brackets 34, 35, are pivotally attached to the tips of these levers 42, 43. The rotary shafts 36, 37 are rotated by hydraulic cylinders 44, 45, whereby the chuck mechanisms attached to the rotary shafts 36, 37 move to the rod loading/unloading position A shown in FIG. The rod can be rotated from the position C to the rod exchange position C.

In addition, in FIGS. 3 and 1, the lever 4
Reference numerals 6 and 47 have a gate 48 at the tip to prevent the rod 4 from falling out from the rod magazine when the respective claws 10 and 11 are opened at the rod loading/unloading position A.
49, which is pivotally connected to brackets 34b and 35b, and is supported by springs 50 and 51.
8, 49 are biased to the open position. Lever 4
Pins 52 and 53 are fixed to 6 and 47,
The arms 8 and 9 are moved by the guides 8a and 9a of the arms 8 and 9 to the spring 5 at the rod loading/unloading position A.
The gates 48 and 49 are held closed against the rods 0 and 51, but the arms 8 and 9 are at the rod exchange position C.
As it rotates, the gates 48 and 49 are gradually opened by the force of the springs 50 and 51, and can finally stand by without interfering with the rod 4 gripped by the chuck mechanism.

In such a device, the work of taking out a new rod 4 from the rod magazine M to the rod exchange position C during drilling work and attaching it to the rear end of the rod 4 that has already been propelled underground is explained below. As the cylinder 30 contracts, the pin 30'
is removed from the pin insertion hole 32 of the disk 33, and after the magazine rotation hydraulic cylinder 28 is retracted, the pin drive hydraulic cylinder 30 is extended, and the pin 3 is removed from the pin insertion hole 32 of the disk 33.
0' is inserted into the pin insertion hole 32 of the disk 33, the magazine rotating hydraulic cylinder 28 is extended, thereby rotating the rod magazine to the right via the disk 33. When the rod magazine is rotated as described above, the brake 31 functions to prevent the rod magazine from spinning idle while the pin 30' is removed from the pin insertion hole 32. Next, the claw 1 of the chuck mechanism is waiting at the rod loading/unloading position A in Figure 2.
Hydraulic cylinders 40, 4 for opening and closing chucks 0, 11
1 and close the rod 4 in the rod magazine.
grasp. In this state, when the arm rotation hydraulic cylinders 44, 45 rotate the arm clockwise via the rotation shafts 36, 37, the gates 48, 49 gradually open due to the springs 50, 51, and the claws 10, 11
The rod 4 gripped by the blanket 3
The rod is taken out by a chuck mechanism through the carry-in/out entrance F formed by cutting out a part of the rods 4 and 35, and carried out to the rod exchange position C on the guide cell 1. A drifter (not shown in the figure) is waiting behind the rod exchange position C, moves forward after carrying out the rod, and connects the rod 4 by screwing both ends of the rod 4 into the shank rod of the drifter and the rod 4 propelled into the ground. Rod 4
The chuck mechanism, which has completed supplying the rods 4, is moved back to the rod loading/unloading position A by the hydraulic cylinder for arm rotation with the claws 10 and 11 open, and waits for the next rod 4 to be supplied. By repeating the above operations, the rods 4 in the rod storage position B of the rod magazine M are successively fed to the rod exchange position C.

In the above embodiment, the operation of supplying the rod 4 in the rod magazine to the rod exchange position C was explained, but the rod 4 that has finished drilling and is no longer used may also be stored in the rod storage position B of the rod magazine M. The operation is simply the opposite of the above-mentioned export, so its explanation will be omitted.

〔Effect of the invention〕

In short, according to the present invention, there is provided a fixed rod gripping body and a chuck mechanism that grips the rod with a piece of pawl. By being able to rotate the rod and the rod magazine to the right or left by a certain angle, the chuck mechanism is simplified, and a rod changing device equipped with a rod magazine that is smaller and can accommodate a larger number of rods can be realized.

[Brief explanation of drawings]

FIG. 1 is a side view showing a partial cross section of the main part of an embodiment of the rod exchange device for a rock crusher according to the present invention, FIG. 2 is a sectional view taken along line DD in FIG. 1, and FIG. EE sectional view and FIG. 4 are perspective views showing the rod magazine of FIG. 1 and a rotating means for the rod magazine. FIGS. 5 and 6 are cross-sectional views showing a conventional chuck mechanism and rod magazine, respectively. 1...Guide cell, 2...Front guide, 3
... Rear guide, 2a, 3a ... Rod housing section,
4... Rod, 5... Central shaft, 8, 9... Arm, 10, 11... Claw, 12, 13... Rod gripping body.

Claims (1)

[Claims] 1. A rod magazine that is installed parallel to the side of the guide cell of the rock crusher, has a plurality of rod accommodating parts along the outer periphery, and is rotatable one pitch at a time around a central axis, and a space between the guide cell and the rod magazine. The chuck mechanism has a rod gripping body and a claw that opens and closes opposite the rod gripping body at the lower end of the arm that swings perpendicularly to the two, and the rod exchange position on the guide cell and the inside of the rod magazine. 1. A rod exchanging device for a rock crusher, characterized in that said chuck mechanism moves between a rod loading and unloading position, and grips and releases a rod at both positions.