Attachment-type drilling device and work vehicle equipped with same

Abstract

To provide an attachment type drilling device capable of eliminating modification of a work vehicle as much as possible.SOLUTION: This attachment type drilling device 100 has a mounting bracket 110 mounted on a tip of an arm of a work vehicle, a control box 120 which is arranged on the tip side of the arm via the mounting bracket 110 and contains a hydraulic device for drilling control, a support bracket 124 that protrudes from the control box 120, and a drilling device body 130 mounted on the support bracket 124.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an attachment-type drilling device that can be retrofitted to the end of the arm of an existing work vehicle such as a power shovel, and to a work vehicle equipped with the same. [Background technology]

[0002] As this type of drilling device, for example, Patent Document 1 discloses a drilling device for a power shovel. The drilling device described in this document comprises a guide shell on which a rock drill is mounted, a guide mounting that supports the guide shell, and a bracket that attaches the guide mounting to the end of the arm of a power shovel. In the technology described in this document, hydraulic equipment including numerous valves for controlling drilling is mounted on the main body of the work vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 09-221978 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the drilling equipment described in the document has a problem in that it requires extensive modification to the vehicle because it is equipped with hydraulic equipment including a large number of valves for drilling control. Therefore, there is still room for further study on an attachment that can be easily replaced. Therefore, the present invention has been made with an eye on such problems, and its objective is to provide an attachment-type drilling device and a work vehicle equipped with the same that require as little modification to existing work vehicles as possible. [Means for solving the problem]

[0005] In order to solve the above problems, one embodiment of the attachment-type drilling device of the present invention is characterized by having an attachment bracket that is attached to the end of the arm of a work vehicle, a control box that is positioned on the end of the arm via the attachment bracket and has built-in hydraulic equipment for controlling drilling, a support bracket that is arranged to extend from the control box, and a drilling device main body that is attached to the support bracket.

[0006] Here, in an attachment-type drilling device according to one embodiment of the present invention, it is preferable that the drilling device main body comprises a swing bracket rotatably attached to the support bracket extending from the control box, a drifter mounted so as to be able to slide via a guide shell equipped on the swing bracket, a swing cylinder capable of swinging the swing bracket, and a guide slide mechanism capable of sliding the guide shell along the swing bracket.

[0007] In addition, in order to solve the above problem, a work vehicle according to one aspect of the present invention comprises a traveling carriage, a swivel base that can rotate on the traveling carriage, an arm that is supported on the swivel base so that it can be raised and lowered freely, and a drilling device that is equipped at the tip of the arm, and is characterized in that the drilling device is an attachment-type drilling device according to one aspect of the present invention that is equipped at the tip of the arm. [Effects of the Invention]

[0008] According to the present invention, modifications to the work vehicle can be made as little as possible. [Brief explanation of the drawings]

[0009] [Figure 1] An explanatory diagram of one embodiment of a work vehicle equipped with an attachment-type drilling device according to one aspect of the present invention, where (a) is a view from the rear side of the drilling device and (b) is a view from the left side. [Figure 2] 1A to 1C are explanatory diagrams of an embodiment of an attachment-type drilling device according to one aspect of the present invention, where (a) is a front view, (b) is a right side view, and (c) is a bottom view. [Figure 3] 1 is a perspective view illustrating the housing structure of the control box and the swing frame of an attachment-type drilling rig according to one embodiment of the present invention, with the mounting bracket removed. [Figure 4] This is a block diagram illustrating the hydraulic circuit of an attachment-type drilling rig according to one embodiment of the present invention, showing that the control box of the drilling rig is equipped with hydraulic equipment including valves necessary for drilling control. [Figure 5] FIG. 2 is a schematic diagram illustrating a control circuit of an attachment-type drilling rig according to one embodiment of the present invention. [Figure 6] FIG. 1 is an explanatory diagram showing the visual state of an attachment-type drilling rig according to one embodiment of the present invention as viewed from the operator cabin. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the drawings are schematic. Therefore, it should be noted that the relationship between thickness and planar dimensions, ratios, etc. differ from the actual ones, and the drawings also include portions where the relationship and ratio of dimensions differ from each other. Furthermore, the embodiments described below are intended to exemplify devices and methods for embodying the technical ideas of the present invention, and the technical ideas of the present invention do not limit the materials, shapes, structures, arrangements, etc. of the components to the embodiments described below.

[0011] 1, the work vehicle 300 of this embodiment includes a traveling carriage 310, a swivel base 320 that can rotate on the traveling carriage 310, an arm 340 that is supported on the swivel base 320 so that it can be raised and lowered, and a drilling device 100 that is attached to the tip of the arm 340. The operator cabin 330 is arranged asymmetrically on the left and right sides of the swivel base 320 so that it is located to the left of the arm 340 in a plan view.

[0012] In the work vehicle 300 of this embodiment, an attachment-type drilling device 100 configured to be replaceable is mounted on the tip of an arm 340. The mass of the drilling device 100 is, for example, approximately 2,200 kg. As the work vehicle 300, for example, a highly versatile 20-ton class hydraulic excavator can be suitably used.

[0013] As shown in Figure 2, the attachment-type drilling device 100 of this embodiment comprises an attachment bracket 110 attached to the tip of the arm 340, a control box 120 arranged on the tip side of the arm 340 via the attachment bracket 110 and incorporating hydraulic equipment 240 for controlling drilling, a support bracket 124 arranged to extend from the control box 120, and a drilling device main body 130 attached to the support bracket 124.

[0014] The control box 120 is configured in a rectangular parallelepiped shape, and in the mounting position where the attachment-type drilling device 100 is mounted to the tip of the arm 340 of the work vehicle 300, the mounting bracket 110 is provided on the top surface of the control box 120. Furthermore, in the above-mentioned mounting position, the support bracket 124 is provided on the left side (or right side) of the control box 120, and a connection panel 251 is provided on the underside of the control box 120, on which the swing bracket 131 and the hydraulic piping connection part 250 to the drilling device main body 130 are arranged. Note that if the piping connection part 250 is arranged on the underside of the control box 120, the underside of the control box 120 may be left open, and therefore the connection panel 251 may not be attached to reduce costs, etc.

[0015] 2, the drilling device main body 130 includes a swing bracket 131, which is rotatably supported by a support bracket 124 extending from the control box 120, and a guide shell 132 is mounted on the swing bracket 131. A hydraulically driven drifter 133 is mounted on the guide shell 132 so as to be slidable along the guide shell 132.

[0016] A channel beam type or the like can be suitably used for the guide shell 132. The drilling diameter that can be achieved by the drifter 133 of this embodiment is, for example, about φ64 to φ76. A chain mechanism driven by a hydraulic motor can be used as the feed mechanism that slides the drifter 133.

[0017] The guide shell 132 is equipped with necessary equipment such as a manually opened / closed centralizer. The guide shell 132 of this embodiment is equipped with a rod rack 138 along the guide shell 132, and the rod rack 138 is capable of storing, for example, two drilling rods. Note that the attachment-type drilling rig 100 of this embodiment is not equipped with a dust collector or a rod changer.

[0018] A swing cylinder 135 is attached to swing bracket 131 so that it can swing, and the guide shell 132 on swing bracket 131 can swing within a predetermined range (in the example shown in Figure 1(a) , a range of 25 degrees forward and backward from the neutral position) in accordance with the extension and contraction of swing cylinder 135.

[0019] In addition, the drilling device main body 130 of this embodiment is further equipped with a guide slide mechanism 136 that can slide the guide shell 132 along the swing bracket 131, and the extension and contraction operation of the cylinder of the guide slide mechanism 136 enables the guide shell 132 itself to slide within a predetermined range.

[0020] In addition, as shown in Figures 2(b) and (c), the attachment-type drilling device 100 of this embodiment has a plurality of support legs 123 for temporarily placing the attachment-type drilling device 100 in a horizontal position on the ground GL when the attachment-type drilling device 100 is detached from the tip of the arm 340 of the work vehicle 300. At least one of the plurality of support legs 123 is provided on the control box 120. In this embodiment, there are three support legs 123 provided so as to extend out to the same position to the side, and one of them is provided on the control box 120.

[0021] 3, the control box 120 of this embodiment has a housing 121 made of a rectangular parallelepiped frame. Diagonal braces 122 are provided at the rectangular opening of the housing 121, thereby reducing the weight and improving the strength. The opening of the housing 121 is covered with a plurality of exterior covers 253.

[0022] In the control box 120 of this embodiment, all instruments 252, such as pressure gauges, are mounted in the opening of the panel mounting section. Hydraulic hoses are connected to the underside of the control box 120. In the control box 120 of this embodiment, the gauges are arranged facing the operator, the operator cabin 330 is located on the left side in a plan view, and in this state, the arm 340 is located on the right side, and the guide shell 132 is located on the left side as seen from the operator.

[0023] 4 and 5, the control box 120 of this embodiment incorporates hydraulic equipment 240 and a relay panel 230, including valves for controlling the operation of devices related to the drifter 133 and the guide shell 132. Precision equipment parts such as the relay panel 230 and hydraulic equipment 240 are vibration-damped by being housed in the housing 121 via mounts.

[0024] The hydraulic equipment 240 is housed in the control box 120, as shown in the hydraulic circuit block diagram in Figure 4. As the valve configuration of the hydraulic equipment 240, a stacked type ON-OFF solenoid valve that can be housed compactly in the control box 120 is adopted, taking into consideration the availability and cost of the valves. As a result, the control box 120 of this embodiment can immediately drive the equipment related to the drifter 133 and guide shell 132 by simply connecting the necessary piping to the relay panel 230, making modifications to the work vehicle 300 unnecessary or minimal.

[0025] 5, the operation panel 210 and the control panel 220 are installed inside the cabin 330. The control system of the control panel 220 employs relay control to enable simple control and facilitate manual adjustment. Since the drilling depth is expected to be relatively shallow, the damper control is simple, with constant pressure control. The control panel 210 is operated by a wired remote control. However, it is preferable to change the cable connected to the control panel 210 to a long cable so that the control panel 210 can be moved to the vicinity of the hole opening.

[0026] In particular, in the control box 120 of this embodiment, as shown in Figures 2(a) and 6, when in the mounted position, all of the instruments 252 (see Figure 4) that show information about the hydraulic equipment 240 built into the control box 120 are mounted only on the surface facing the operator cabin 330. As a result, the instrument panel 252 is located in front of the control box 120 when viewed from the operator cabin 330, so that the instrument panel 252 can be easily and reliably viewed from the cabin side, providing excellent visibility from the operator cabin 330.

[0027] Next, the effects of the attachment-type drilling device of this embodiment will be described. The attachment-type drilling device 100 of this embodiment is used by being attached to the tip of an arm 340 of an existing work vehicle 300 such as a power shovel. When mounting, the attachment-type drilling rig 100 is removed from the tip of the arm of the work vehicle 300, and the attachment-type drilling rig 100 is temporarily placed in a horizontal position on the ground GL using the multiple support legs 123. Then, in this temporarily placed state, the mounting bracket 110 provided on the control box 120 is attached to the tip of the arm 340 using a pin or the like. The attachment-type drilling rig 100 of this embodiment uses a service port mounted for a breaker on the work vehicle 300 side as a hydraulic power source. The attachment-type drilling rig 100 of this embodiment can be driven at a maximum operating pressure (required set pressure) of, for example, about 21 MPa.

[0028] The service circuit has a one-way flow (bidirectional flow is not possible) with a service flow rate (180 to 200 L / min). To avoid wasting power, it is preferable to equip the service circuit with a port relief (pressure adjustable type) and adjust the flow rate (engine rotation speed) on the work vehicle 300 side to reduce excess flow. The power source is the DC 24 V power supply on the excavator side. The compressor should be installed separately.

[0029] The attachment-type drilling equipment 100 of this embodiment is equipped with a hydraulically driven drifter 133, and therefore has higher drilling performance and higher mobility than, for example, pneumatic drilling equipment. Furthermore, the attachment-type drilling rig 100 of this embodiment is capable of drilling over a wide area due to the long reach of the arm 340 on the work vehicle 300 on which it is mounted and the rotation function of the swivel 320. Furthermore, since it is positioned as an attachment product for work vehicles such as hydraulic excavators, it can be said to have high versatility.

[0030] Here, in conventional attachment-type drilling rigs, the control equipment is installed on the main body of the work machine, whereas in the attachment-type drilling rig 100 of this embodiment, a control box 120 containing hydraulic equipment 240 for controlling drilling is provided on the attachment side.

[0031] In other words, as described above, the attachment-type drilling device 100 of this embodiment comprises a mounting bracket 110 attached to the tip of the arm 340 of the work vehicle 300, a control box 120 arranged on the tip side of the arm 340 via the mounting bracket 110 and incorporating hydraulic equipment 240 for controlling drilling, a support bracket 124 arranged to extend from the control box 120, and a drilling device main body 130 attached to the support bracket 124 (Invention 1).

[0032] As a result, with the attachment-type drilling device 100 of this embodiment, when mounting a hydraulically driven drifter 133 on the work vehicle 300, it can be used simply by connecting the breaker service piping on the work vehicle 300, making it possible to replace it while minimizing the need for modifications to the work vehicle 300 (no hydraulic modification work is required on the work vehicle itself). Furthermore, according to the embodiment of the attachment-type drilling device 100, while introducing a hydraulic drilling machine, the simple configuration allows for low costs, achieving both cost and functionality, and since it can be easily attached and detached to existing work vehicles, ease of installation is improved and versatility is enhanced.

[0033] In particular, in the attachment-type drilling device 100 of this embodiment, as shown in Figure 2, the drilling device main body 130 has a configuration having a swing bracket 131 that is rotatably attached to a support bracket 124 that extends from the control box 120, a drifter 133 that is mounted so as to be able to slide via a guide shell 132 equipped on the swing bracket 131, a swing cylinder 135 that can swing the swing bracket 131, and a guide slide mechanism 136 that can slide the guide shell 132 along the swing bracket 131 (Invention 2). This allows the guide shell 132 to control its posture (guide swing, guide slide) within a predetermined range through the rotational movement of the swing cylinder 135 and the extension and contraction movement of the guide slide mechanism 136, making it easy to work with when drilling, even though it is an attachment type.

[0034] In addition, in the attachment-type drilling device 100 of this embodiment, the control box 120 is configured in a rectangular parallelepiped shape, and when the attachment-type drilling device 100 is attached to the tip of the arm 340 of the work vehicle 300, the attachment bracket 110 is located on the upper surface of the control box 120. Furthermore, in the attached position, in the attachment-type drilling device 100 of this embodiment, the support bracket 124 is located on the left side of the control box 120, and the underside of the control box 120 is provided with a connection part for the swing bracket 131 and the hydraulic piping to the drilling device main body 130, so that the attachment is easy to replace, and the layout is also easy to drill even in the attached position after replacement (Invention 3).

[0035] Furthermore, according to the attachment-type drilling equipment 100 of this embodiment, as shown in Figure 6, all of the instruments 252 that display information about the hydraulic equipment built into the control box 120 are only equipped on the surface facing the operator cabin 330, so visibility is excellent when drilling in the attached position, and the operator can easily check the status of the equipment by looking at the instruments 252 at any time during drilling work (Invention 4).

[0036] Furthermore, according to the attachment-type drilling equipment 100 of this embodiment, the control box 120 has a housing 121 consisting of a rectangular frame body, and the opening portion of the housing 121 is covered with an exterior cover 253. This structure makes the control box 120 lightweight, making it suitable as an attachment (Invention 5).

[0037] Furthermore, according to the attachment-type drilling device 100 of this embodiment, a brace 122 is provided in the rectangular opening portion of the housing 121, which provides an excellent structure that reduces the weight of the control box 120 while improving its strength (Invention 6).

[0038] Furthermore, according to the attachment-type drilling device 100 of this embodiment, when the attachment-type drilling device 100 is detached from the tip of the arm of the work vehicle 300, it has a plurality of support legs 123 for temporarily placing the attachment-type drilling device 100 in a horizontal position on the ground GL, and at least one of these plurality of support legs 123 is provided on the control box 120, which makes it possible to maintain a stable horizontal position taking into account the center of gravity position, and also makes it easy to attach and detach when replacing (Invention 7).

[0039] As explained above, the attachment-type drilling rig 100 of this embodiment can minimize the need for modifications to the carriage of the work vehicle 300. The attachment-type drilling rig of the present invention is not limited to the above embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0040] For example, in the attachment-type drilling rig 100 of this embodiment, an example is shown in which devices such as a rod changer, dust collector, precleaner, etc. are not mounted in order to reduce costs through a simple configuration, but this is not limited to this and these devices may be mounted. Also, in the above embodiment, an example is shown in which the compressor is installed separately from the work vehicle 300, but it may also be mounted on the work vehicle side.

[0041] The use of the attachment-type drilling rig 100 of this embodiment has industrial applicability, for example, making it possible to set a product (specifications, price) that can be sold to developing countries that have not yet introduced dedicated hydraulic drilling machines. In addition, since the parts are more versatile than those of dedicated hydraulic drilling machines, it becomes relatively easy to procure materials overseas. Furthermore, at work sites where pneumatic drilling or blast-less mining using breakers or shovels is being carried out, this machine can be deployed as a key machine for the transition from pneumatic drilling to future hydraulic drilling, and as a strategic and guidance machine for training hydraulic crawler drill users. [Explanation of symbols]

[0042] 100 Drilling Equipment 110 Mounting Bracket 120 Control Box 121 Case 122 Bracing 123 Support legs 124 Support bracket 130 Punching device body 131 Swing Bracket 132 Guide Shell 133 Drifter 134 Feed mechanism 135 Swing Cylinder 136 Guide slide mechanism 138 Rod Rack 210 Control panel 220 Control Panel 230 Relay Panel 240 Hydraulic Equipment 250 Pipe connection 251 Connection Panel 252 Instrument Panel 253 Exterior cover 300 Work Vehicles 310 Traveling Cart 320 Swivel 330 Cabin 340 Arm GL Ground

Claims

1. a mounting bracket attached to the end of the arm of the work vehicle; a control box disposed on the arm tip side via the mounting bracket and having a built-in hydraulic device for controlling drilling; a support bracket provided so as to protrude from the control box; a drilling device body attached to the support bracket; An attachment-type drilling device comprising:

2. The punching device body includes: a swing bracket rotatably attached to the support bracket extending from the control box; a drifter slidably mounted via a guide shell provided on the swing bracket; a swing cylinder that can swing the swing bracket; a guide slide mechanism that allows the guide shell to slide along the swing bracket; 2. The attachment-type drilling rig of claim 1, comprising:

3. The control box is configured in a rectangular parallelepiped shape, In an attachment position in which the attachment-type drilling device is attached to the arm tip of the work vehicle, The mounting bracket is provided on the top surface of the control box, and the support bracket is provided on the left side surface or the right side surface of the control box, 3. An attachment-type drilling rig according to claim 2, wherein a connection portion for hydraulic piping to the swing bracket and the drilling rig main body is provided on the underside of the control box.

4. An attachment-type drilling device as described in claim 3, wherein in the mounted position, all instruments indicating information on the hydraulic equipment built into the control box are mounted only on the surface facing the operator cabin of the work vehicle.

5. 5. An attachment-type drilling rig according to claim 3 or 4, wherein the control box has a housing made of a rectangular parallelepiped frame, and the opening of the housing is covered with an exterior cover.

6. 6. An attachment-type drilling device according to claim 5, wherein a brace is provided at the rectangular opening of the housing.

7. When the attachment-type drilling device is detached from the arm tip of the work vehicle, An attachment-type drilling device as described in any one of claims 1 to 6, having a plurality of support legs for temporarily placing the attachment-type drilling device in a horizontal position on the ground, and at least one of the plurality of support legs is provided on the control box.

8. A work vehicle comprising: a traveling carriage; a swivel base that can rotate on the traveling carriage; an arm that is supported on the swivel base so as to be able to rise and fall freely; and a drilling device that is equipped at the tip of the arm; A work vehicle characterized in that the attachment-type drilling device according to any one of claims 1 to 7 is equipped at the tip of the arm.

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