JPH0776983A - Machine drill used by mounting on arm of hydraulic shovel type excavator - Google Patents

Abstract

PURPOSE:To suppress the scattering of dust generated at boring, in a machine drill used by mounting on the arm of a back hoe, to improve working environment, and allow the preliminary set of the boring depth to automate the boring work. CONSTITUTION:A machine drill A as a machine body 1 and a turning device 100. The machine drill. body 1 has a base body 2 mounted on the turning device 100 in such a manner as to be angle-adjustable. An extending body 3 is mounted on the base body 2 in such a manner as to be capable of sliding. A raising and lowering body 4 is mounted on the extending body 3 in such a manner as to be capable of sliding. A machine drill unit 5 sliding intelockingly with the raising and lowering body 4 is mounted on the raising and lowering body 4. An extending cylinder S3 is interposed between the base body 2 and the extending body 3, and a driving cylinder S3 is interposed between the extending body 3 and the raising and lowering body 4. The raising and lowering body 4 has a working projection 43, and the extending body 3 has a base column 30 having limit switches L1 to L5 which receive the action of the working projection 4 to control the drive of the machine drill body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic excavator excavator, for example, a rock drill used by being attached to an arm of a backhoe.

[0002]

2. Description of the Related Art Among construction machines, a hydraulic excavator excavator such as a backhoe can cope with various works by attaching various working machines to the tip of an arm, but rock drilling work is one of them. Is one. The present inventor
-In 93284, regarding the rock drill to be attached to the arm of the backhoe, the rock drill itself can be made small so that it does not become bulky when the rock drill is not used during transportation or storage, We have proposed a rock drilling machine that enables adjustment of the distance from the rock drilling machine mounting portion and enables quick setting to the drilling point of the rock drilling machine even in the presence of obstacles such as rocks. This rock drill was sufficiently effective to achieve the above objectives.

However, when drilling diagonally on the ground or drilling on a slope, when the rock drill is moved to the drilling point, the position of the rock drill cannot be finely adjusted, which is sufficient. There were times when I couldn't. In addition, the dust scattered from the perforated portion causes a bad working environment. Further, the depth of the hole depends on the intuition of the operator, and the operator has to monitor the hole portion during drilling. When drilling on the slope and crushing the rock with hydraulic ceria, the operator had to carry the heavy hydraulic ceria to the slope. This work was hard and dangerous.

[0004]

[Means for Solving the Problems] The constitution of the present invention taken to solve the above problems and achieve the object is as follows. The first means is a rock drill that is used by being attached to an arm of a hydraulic excavator excavator. The rock drill includes a rock drill main body and an attachment means that is attached to an arm of the hydraulic excavator excavator. And a rocking device for turning the rock drill body, wherein the rock drill body is a base body attached to the turning device in an adjustable angle, and an extension body slidably attached to the base body. An elevating body that is slidably mounted along the extension body, and a slidable body that is slidably mounted along the elevating body,
A rock drilling unit that slides in conjunction with a lifting body, an extension cylinder provided between the base body and the extension body, and a drive cylinder provided between the extension body and the lifting body. It is a rock drilling machine that is equipped with and is attached to the arm of a hydraulic excavator excavator.

The second means is a rock drilling machine which is provided with a dustproof cover for covering the perforated portion at the bottom of the extension body and which is used by being attached to the arm of the hydraulic excavator excavator according to the first means.

According to a third means, the lifting body has an action portion,
The extension body is provided with a base column having a detecting means, and the detecting means receives the action of the action part to detect the moving length of the elevating body so that the depth of the perforation can be controlled. It is a rock drill that is used by being attached to an arm of a hydraulic excavator excavator according to a second means.

A fourth means is a hydraulic excavator excavator system according to the first, second or third means, wherein a rock basket main body or a turning device is detachably provided with a carrying basket capable of mounting working equipment. It is a rock drill used by attaching it to the arm of the machine.

[0008]

The swing device is mounted on the arm of the hydraulic excavator excavator through the mounting means. The elevating body is lifted by the drive cylinder, and the rock drilling rod is attached to the rock drilling unit that is lifted accordingly. The arm is operated to position the rock drill main body above the drilling portion such as rock, and the extension body is lowered by the extension cylinder to abut the drilling portion. The elevating body is lowered by the drive cylinder while driving the rock drilling unit. Along with this, the rock drilling unit descends and the rock drilling rod pierces.

In the case where the dustproof cover is provided at the lower part of the extension body, the dust discharged from the perforated portion is stopped inside the dustproof cover and is unlikely to be scattered to the outside. Further, the perforated portion can be accurately positioned, and the spot facing or the positional deviation during the perforation hardly occur. By detecting the moving length of the lifting body by the detecting means, the drilling depth can be controlled, and it becomes possible to automate a series of operations from the start of drilling to the stop and removal of the rock drilling rod. . In the case where the transportation cage is detachably installed in the rock drilling machine body, the working equipment such as the hydraulic celia can be carried to the drilling point, so that the operator does not have to carry heavy equipment in a dangerous rocky place.

[0010]

The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a perspective view showing an embodiment of a rock drilling machine according to the present invention, FIG. 2 is a cross-sectional view of a main part showing a structure of a turning portion of a turning device, and FIG. 3 is a schematic view in which a part of the rock drilling machine is omitted. 4 is a plan view, FIG. 4 is a perspective view of a main part showing the structure of a dustproof cover, FIG. 5 is a perspective view of a main part showing the structure of a mounting part of a limit switch, and FIG. 6 is an exploded perspective view of a main part showing a mounting structure of a carrying basket. is there.
Reference numeral A is a rock drill, which includes a rock drill main body 1 and a turning device 100. The turning device 100 is provided with a base 101 for attaching to the arm tip of a hydraulic excavator excavator. On the upper part of the base 101, mounting plates 102 serving as mounting means are provided upright at two positions with a predetermined interval. Each mounting plate 102 has two mounting holes 103, 103a, respectively.
Is provided. The mounting holes 103, 103 are at the tip of the arm,
The mounting holes 103a and 103a are rotatably mounted on the tilt shaft.

Referring to FIG. A swivel board 104 is rotatably attached to the lower part of the base 101. As shown in FIG. 2, an inner ring 120 is provided on the lower surface of the base 101. An outer ring 130 is protrudingly provided on the upper surface of the swivel board 104. Further, raceway grooves 121 and 131 are formed on the outer peripheral surface of the inner ring 120 and the inner peripheral surface of the outer ring 130.
A rolling element 90 which is a steel ball is interposed in 131. A gear 132 is engraved on the outer peripheral surface of the outer ring 130.

A hydraulic motor (not shown) is provided on the base 101. A gear 105 is attached to the drive shaft of the hydraulic motor. The gear 105 meshes with the gear 132, and the turning disc 104 turns by operating a hydraulic motor. The swivel device 100 is equipped with a swivel joint (not shown) so that it can be connected to each cylinder described later.

Referring to FIG. Two mounting boards 106 are provided on the lower surface of the swivel board 104. A relay 108 is rotatably attached to the front end of the attachment substrate 106 via a shaft pin 107. A base end portion of the angle adjusting cylinder S1 is rotatably attached to the rear portion of the mounting substrate 106 via a shaft pin 109. The rod head of the angle adjusting cylinder S1 is attached to the lower side of the relay tool 108 via a shaft pin 110.

A mounting support plate 111 is provided at the rear of the swivel board 104.
Is hung down. A hook plate 112 bent upward is provided on the outer surface of the attachment support plate 111. The mounting support plate 111 and the hook plate 112 are provided with two bolt holes 113 and 114, respectively. The transport basket 8 is detachably attached to the attachment support plate 111. (For convenience, the carrying basket 8 is omitted in FIG. 1.)

Referring to FIG. The transport basket 8 includes a bottom frame 81 having a bottom plate 80, and a front end of the bottom frame 81 has a mounting frame 82 that is firmly made of a square pipe. Side frames 83 and 84 are provided on both sides of the bottom frame 81. Mounting plates 85, 86 are provided on the side frames 83, 84, and two hydraulic celia 87 are mounted on each of the mounting plates 85, 86. The hydraulic ceria 87 is to be inserted into the hole drilled by the rock drilling machine A to expand the hole, and to break the bedrock by the expanding force. Then, in the transport basket 8, the upper horizontal member 820 of the mounting frame 82 is fitted into the hook plate 112, and the bolt hole 1
Two fixing bolts 115 are inserted between 13 and 114, and tightened with a nut 116 to be fixed to the mounting support plate 111.

Returning to FIG. 1, description will be made. The rock drill main body 1 is attached to the front part of the relay tool 108. Rock drill body 1
Has a square tubular base body 2 of a required length, and an internal space 20 is provided inside. A substrate 203 is fixed to the lower portion of the base body 2, and two mounting plates 200 are provided on both sides of the substrate 203.
Are provided facing each other. The base 2 is the relay 108.
The mounting plate 200 is mounted and fixed to the tip of the shaft via shaft pins 201 and 202. A holding strip 23 is provided on one side of the base body 2 over the entire length. Further, a swash plate 204 is fixed to one end of the substrate 203 fixed to the base body 2, and a guide plate 205 is fixed to the swash plate 204. The guide plate 205 is provided with holding strips 206 and 207 over the entire length.

An extension body 3 is attached to the base body 2. The extension body 3 has an H-shaped cross section, and holding strips 31 and 32 are provided over the entire length at both ends on one side of the two parallel pieces. A holding strip 300 is provided at the center of the other side, a holding strip 32a is provided at one end, and a base post 30 described later is fixed to the outer surface of the one end. In the extension body 3, the holding strip 31 is engaged with the holding strip 23, the holding strip 300 is engaged with the holding strip 206, and the extension body 3 is slidably fitted to the base body 2. An elevating body 4 described later is attached to the extension body 3.

Please refer to FIG. 1 and FIG. The base column 30 fixed to the extension body 3 is formed to be slightly longer than the extension body 3.
The base column 30 has a substantially rectangular pipe shape, and an adjustment groove 301 is provided in the front portion from the lower end to a little lower than the upper end. Adjustment groove 30
1 is limit switches L1, L2, L which are detection means.
3, L4, L5 are mounted at required intervals. Each limit switch has a screw 302 penetrating the limit switch and an adjustment groove 301 at the rear of the limit switch.
The adjusting groove 30 is sandwiched by the sandwiching plate 303 which is arranged so as to sandwich it.
Can be fixed at any position.

Please refer to FIG. 1 and FIG. A base 33 is provided at the lower end of the extension body 3. In the front part of the base 33, a centrizer 3 having a reference hole 340 through which the rock drilling rod 6 passes is provided.
4 is provided. The centralizer 34 has a cylindrical body 341, and the cylindrical body 341 has a lid 342 capable of rotating in the lateral direction.
Is provided. On the upper surfaces of the cylindrical body 341 and the lid 342,
Notched holes 343 and 344 are provided to form a reference hole 340 on both sides. The upper surface of the lid 342 is set to project from the upper surface of the cylindrical body 341. The lid 342 can be fixed to the cylindrical body 341 via the hooking pin 345, and the hooking pin 345 can be removed and opened as necessary. Below the cylindrical body 341, a rectangular cylindrical dustproof cover 35 having an open lower portion is provided in communication.

Please refer to FIG. 1 and FIG. On the rear side of the base 33, an extension cylinder S that can move in and out of the internal space 20 of the base body 2.
2 stands upright with the rod head up. The rod head of the extension cylinder S2 is attached to a pin 25 provided on the upper end of the base body 2. As a result, the lifting / lowering body 3 slides along the base 2 by the operation of the extension cylinder S2. A drive cylinder S3 is also erected on the front part of the base 33 with the rod head facing up.

In the holding strips 32, 32a of the extension body 3, the lifting strips 4 are provided on both sides of the holding strips 41, 41 at substantially the center thereof.
A is fitted and slidably attached. The elevating body 4 has a rectangular tubular shape and is formed to have substantially the same length as the extension body 3. An internal space 40 is formed inside the lifting body 4.
Further, guide strips 42 are provided on both sides of the front part of the lifting body 4 over substantially the entire length, and a working projection 43 serving as a working part is provided near one end of one side of the lifting body 4 (see FIG. 5). .
The action protrusion 43 acts by contacting the switch portions of the limit switches L1, L2, L3, L4, and L5 by sliding the elevating body 4.

An intermediate plate 44 having an insertion hole 440 is horizontally provided at the lower end of the lifting body 4. Also, the internal space 40
A fixing member 45 is provided near the upper end of the elevating body 4. The rod head of the drive cylinder S3 is attached to the fixed member 45. Accordingly, the lifting body 4 can be moved up and down along the extension body 3 by the operation of the drive cylinder S3.
A rock drilling unit 5 to which the rock drilling rod 6 is attached is slidably attached to the holding strip 42 of the elevating body 4 with the holding portion 51 fitted therein. The rock drilling unit 5 is provided with a pneumatic impacting device, a chuck (both not shown) for mounting the rock drilling rod 6 (shown in FIGS. 7 to 10), and the like.

A mounting piece 36 bent substantially at a right angle to the rock drilling unit 5 side is fixed to the upper portion of one side surface of the extension body 3 (see FIG. 3). The tip of the attachment piece 36 is provided with a chain attachment portion 37 that protrudes to a position corresponding to sprockets 38 and 39 described later. Sprockets 38, 39 are attached to the upper end and the lower end of the sliding surface of the rock drilling unit 5 of the lifting body 4. The drive chains C1 and C2 are wound around the sprockets 38 and 39.

Referring to FIG. The drive chain C1 has one end attached to the chain attaching portion 37, and after being wound around the sprocket 39, the other end is attached to the lower portion of the rock drilling unit 5. The drive chain C2 has one end attached to the upper portion of the rock drilling unit 5, wound around the sprocket 38, and the other end attached to the chain attachment portion 37. According to this, when the elevating body 4 mounting the rock drilling unit 5 moves up and down along the extension body 3, the rock drilling unit 5 moves up and down along the elevating body 4. Therefore, when viewed relatively, the rock drilling unit 5 can move longer than the lifting body 4 by the amount that the rock drilling unit 5 moves up and down along the lifting body 4.

7 to 10 are extension bodies of the rock drilling machine main body,
11 is a schematic explanatory view showing movements of the lifting body and the rock drilling unit, FIG.
FIG. 4 is a schematic explanatory view showing a usage state. The operation of this embodiment will be described with reference to FIGS. 1 to 6 and 7 to 11. First, the turning device 100 of the rock drill A is attached to the tip of the arm B1 of the backhoe B, and the hydraulic system of the backhoe B and the hydraulic system of the rock drill are connected in advance. The rods of the extension cylinder S2 and the drive cylinder S3 are both contracted (see FIG. 7), and the reference hole 34
0 and the insertion hole 440 of the intermediate plate 44 is inserted, and the rock drilling rod 6 is attached to the chuck portion of the rock drilling unit 5.

When the drive cylinder S3 is operated and the rod is extended, the elevating body 4 rises above the extension body 3,
Since the chain mounting part 37 does not move, the sprocket 3
While rocking 8, 39, the rock drilling unit 5 moves up and down 4
Rises along. Rock drilling rod 6 by these movements
Is drawn through the reference hole 340 and the insertion hole 440. Then, with the tip of the rock drilling rod 6 housed in the dustproof cover 35 below the centrizer 34, the drive cylinder S3
The rod stops. (See FIG. 8) As described above, the rock drilling rod 6 longer than the elevating body 4 can be mounted.

The arm B1, the turning device 100, and the angle adjusting cylinder S1 are operated to dispose the rock drill A at a predetermined angle at the drilling location, and the lower end of the dustproof cover 35 is brought into contact with the drilling location. The striking device of the rock drilling unit 5 is operated while the rod of the drive cylinder S3 is contracted and the lifting body 4 is lowered.
The rock drilling unit 5 operates in the opposite manner to the above to descend, and vibrates the rock drilling rod 6 by the striking device to punch a rock.

To pull out the rock drilling rod 6, if the rod of the drive cylinder S3 is extended upward, the rock drilling rod 6 rises and comes out. Note that, for example, when the working protrusion 43 of the lifting body 4 acts on the limit switch L3, the drive cylinder S3
If it is set to stop the drilling, it becomes possible to preset the drilling depth. In addition, the drive cylinder S3
If the rod is set to be stretched after stopping, the work of pulling out the rock drilling rod 6 can be automatically performed. That is, it becomes possible to automate a series of work from drilling, stopping, and pulling out of the rock drilling rod, and the operator can leave the seat during the drilling work.

The normal operation is as described above, but when the place to be drilled is sandwiched by rocks or the like, and the lower part of the turning device 100 and the rock drilling machine A mounted on the tip of the arm B1 is too narrow to enter. If there is an obstacle such as rock or the like and the tip portion of the rock drilling machine A cannot be lowered to the drilling point in the above state, the following action is performed.

From the state of FIG. 8 described above, the rod of the extension cylinder S2 is extended and the extension body 3 is lowered while the tip of the arm B1 is stopped above the drilling location. (See FIG. 9) When the extension body 3 descends, the centrizer 34 and the turning device 1
The distance to 00 is long, and the place to be drilled is sandwiched by rocks, etc., so narrow that the lower part of the turning device 100 and the rock drilling machine A cannot enter, or even if there is an obstacle below the arm 101, rock drilling The tip of machine A can be lowered to the drilling point. When the lower end of the dustproof cover 35 of the extension body 3 reaches the perforated portion, the rod of the extension cylinder S2 is stopped,
Perform the same operation as. (See Figure 10)

When the drilling site is a sloped rock,
The angle adjusting cylinder S1 and the turning device 100 are adjusted while combining both movements, the rock drill main body 1 is suitably arranged at the drilling location, and the rock drilling rod 6 drills. It should be noted that the rock drilling machine A is not bulky when the rock drilling rod 6 is removed and reduced to the state of FIG. 7 during transportation or storage. The present invention is not limited to the illustrated embodiment, but various modifications can be made within the scope of the claims.

[0032]

The present invention having the above-mentioned structure has the following effects. (A) Since the rock drill includes a rock drill main body and a turning device that turns the rock drill main body, when the rock drill is mounted on a hydraulic excavator excavator to drill a desired location. , If you move the hydraulic excavator excavator to a rough place,
After that, the movement of the rock drill can be finely adjusted without moving the hydraulic excavator excavator, and the rock drill can be quickly installed at the drilling site. (B) In the case where the dustproof cover is provided at the lower part of the extension body, the dust discharged from the perforated portion is stopped inside the dustproof cover and is unlikely to be scattered to the outside. Therefore, the worker is not burdened with the dust mask or the like, and the working environment is improved. Further, it has a function as a sighting device capable of accurately positioning the punched portion, and is less likely to cause spot facing or a positional deviation during drilling.

(C) In the case where the drilling depth can be controlled by detecting the moving length of the lifting / lowering body by the detecting means, a series of operations from the start to the stop of the drilling and the withdrawal of the rock drilling rod are automated. It is also possible for the operator to leave the seat for breaks or occasions during the drilling work. (D) If the rock drill is equipped with a detachable transportation basket, for example, when drilling a rock on the slope and crushing it with a hydraulic ceria, attach the transportation basket to the rock drill and use the hydraulic ceria. By mounting the other work equipment, the worker does not have to carry the work equipment to the drilling location. Therefore, the labor of the worker is reduced, and a dangerous fall accident in a rocky place can be prevented, so that safe work can be performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a rock drilling machine according to the present invention.

FIG. 2 is a sectional view of an essential part showing the structure of a turning portion of a turning device.

FIG. 3 is a schematic plan view in which a part of the rock drilling machine main body is omitted.

FIG. 4 is a perspective view of a main part showing the structure of a dustproof cover.

FIG. 5 is a perspective view of a main part showing the structure of a mounting portion of a limit switch.

FIG. 6 is an exploded perspective view of essential parts showing a mounting structure of a carrying basket.

FIG. 7 is a schematic explanatory view showing movements of an extension body, a lifting body, and a rock drilling unit of the rock drilling machine body.

FIG. 8 is a schematic explanatory view showing movements of an extension body, a lifting body, and a rock drilling unit of the rock drilling machine body.

FIG. 9 is a schematic explanatory view showing movements of an extension body, a lifting body, and a rock drilling unit of the rock drilling machine body.

FIG. 10 is a schematic explanatory view showing movements of an extension body, a lifting body, and a rock drilling unit of the rock drilling machine body.

FIG. 11 is a schematic explanatory view showing a usage state.

[Explanation of symbols]

 A rock drill 1 rock drill main body 100 turning device 2 base 3 extension 30 base pillars L1, L2, L3, L4, L5 limit switch 35 dust cover 4 lift 43 working protrusion 5 rock drilling unit S2 extension cylinder S3 drive cylinder 8 transport baskets

Claims (4)

[Claims] 1. A rock drilling machine to be used by being attached to an arm of a hydraulic excavator excavator, the rock drilling machine being attached to a rock drilling machine body (1) and an arm of a hydraulic excavator excavator. A turning device (100) having a mounting means for turning the rock drilling machine body (1)
The rock drill body (1) is provided with a base body which is attached to the swivel device (100) in an adjustable angle.
(2), an extension body (3) slidably mounted along the base body (2), an elevating body (4) slidably mounted along the extension body (3), and A rock drilling unit (5) that is slidably mounted along the body (4) and slides in conjunction with the lifting body (4).
An extension cylinder (S2) provided between the base body (2) and the extension body (3), and an extension cylinder (S2) provided between the extension body (3) and the lifting body (4). A rock drilling machine that is equipped with a drive cylinder (S3) that is installed on the arm of a hydraulic excavator excavator. 2. The rock drill for use as mounted on the arm of a hydraulic excavator excavator according to claim 1, wherein a dust-proof cover (35) for covering the perforated portion is provided at the bottom of the extension body (3). 3. The elevating body (4) has an action portion and is an extension body.
(3) is provided with a base column having a detecting means, and the detecting means detects the moving length of the elevating body (4) by the action of the action part so that the depth of the hole can be controlled. The rock drilling machine according to claim 1 or 2, which is used by being attached to an arm of the hydraulic excavator excavator. 4. The hydraulic excavator according to claim 1, 2 or 3, wherein the rock drilling machine body (1) or the turning device (100) is detachably provided with a carrying basket (8) capable of mounting working equipment. A rock drill used by attaching to the arm of an excavator.