Earth drill machine, attachment, and attachment replacement method

Abstract

To provide a novel earth drill machine capable of switching between a boom type earth drill machine and a leader type earth drill machine only by replacing a front attachment.SOLUTION: An earth drill machine (1) comprises a main body (10) and an attachment (100, 200) attached to the main body. The main body has an attachment mounting section (20) for mounting the attachment, and the attachment mounting section is configured to selectively mount a boom-type attachment or a leader-type attachment.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an earth drill machine, an attachment for use with the earth drill machine, and an attachment for use with the earth drill machine. This relates to the item exchange method. [Background technology]

[0002] Conventionally, there are two types of earth drills used for the cast-in-place pile construction: boom type and leader type. A reader-type earth drill is known from, for example, Patent Document 1. As an example of a boom-type earth drill machine, the one disclosed in Patent Document 2 is known. The leader type is excellent for drilling in hard ground, while the leader type is excellent for excavation work in hard ground. It is common to use different types of earth drill machines depending on the situation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4069049 [Patent Document 2] Patent No. 2589232 Summary of the Invention [Problem to be solved by the invention]

[0004] Depending on the situation at the site, if you need to replace the earth drill machine, the replacement work is a major undertaking. This resulted in poor work efficiency.

[0005] Therefore, the present invention provides a method for replacing a boom type earth drill machine with a leader type earth drill machine. The main objective of the present invention is to provide an earth drill machine that can easily perform the above-mentioned steps. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, a representative aspect of the present invention is an earth drill machine comprising a main body and an attachment attached to the main body for connecting a drilling tool, wherein the attachment can be selected from a boom-type attachment and a leader-type attachment, the main body has an attachment mounting section including a common connecting section for selectively attaching the boom-type attachment and the leader-type attachment, the boom-type attachment and the leader-type attachment each have an attachment main body and a subframe that supports the attachment main body and is attached to the attachment mounting section, and the attachment mounting section is configured so that the subframe of the boom-type attachment and the subframe of the leader-type attachment can be selectively attached using the connecting section.

[0007] According to the present invention, the boom type earth drill machine and the leader type earth drill machine can be interchanged. The above-mentioned problems, configurations and effects can be easily achieved by the following implementation. This is made clear by the description of the form. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a side view of an earth drill machine with a leader-style front attachment attached. [Diagram 2] FIG. 1 is a side view of an earth drill machine with a boom-type front attachment attached. [Diagram 3] FIG. 2 is a side view of the body of the earth drill machine. [Figure 4] 4 is a side view of an attachment mounting portion provided on the main body. FIG. [Diagram 5] FIG. 2 is an enlarged view showing a main part including a subframe of a leader-type front attachment. [Figure 6]FIG. 2 is an enlarged view showing a main part including a subframe of a boom-type front attachment. [Figure 7] FIG. 2 is a hydraulic circuit diagram of the earth drill machine with a boom-type front attachment attached. [Figure 8] FIG. 13 is a configuration diagram showing the input / output of the controller when a boom-type front attachment is attached. [Figure 9] FIG. 1 is a hydraulic circuit diagram of an earth drill machine with a leader-type front attachment attached. [Figure 10] FIG. 13 is a configuration diagram showing the input / output of the controller when a reader-type front attachment is attached. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a side view of the earth drill machine 1 with the drill attachment 100 attached. FIG. 1 is a side view of an earth drill machine 1 to which a front attachment 200 of a drum type is attached. FIG. 3 is a side view of the main body 10 of the earth drill machine 1. FIG. FIG. 2 is a side view of the attachment mounting portion 20.

[0010] (Earth drill machine 1) As shown in FIG. 1 and FIG. 2, the earth drill machine 1 according to the present embodiment includes a traveling body 2 and The main body 10 is made up of a rotating body 3 supported on the traveling body 2 so that it can rotate. Select the front attachment 100 or the boom-type front attachment 200. That is, the earth drill machine 1 according to this embodiment has a common main body 1 By simply replacing the front attachment 100 or 200, you can use it as a reader or boom type. However, the main body 10 has a front attachment 100. , 200 can be supported, the combination is not limited to that of the running body 2 and the rotating body 3.

[0011] The traveling body 2 travels by being rotated by traveling motors 80 and 81 (see FIG. 7). The rotating body 3 is rotated relative to the traveling body 2 by a rotating motor 82 (see FIG. 7). The rotating body 3 includes a cab 4, a counterweight 5, and a rear winch 6. and a front winch 7.

[0012] The cab 4 is provided at the front end of the rotating body 3. The cab 4 is provided with the main body of the earth drill machine 1. The internal space of the cab 4 is also provided with an earthing The drill machine 1 is provided with various operating devices (levers, switches) 50 to 60 (see FIG. 8). An operator in the interior space of the cab 4 operates the operation devices 50 to 60. By operating the machine, the traveling body 2 travels, the rotating body 3 rotates, and the front attachment 1 00 and 200 work.

[0013] The counterweight 5 is provided at the rear end of the rotating body 3. Balance the weight of the front attachments 100, 200 and the load (not shown). The rear winch 6 is a heavy object. The rear winch 6 is driven by a rear winch hydraulic motor (rear winch drive motor 8 4 (see FIG. 7) to wind up or down the Kelly rope 116. The front winch 7 is driven by a front winch hydraulic motor (front winch drive motor 83 (see FIG. 7) to wind up or down the auxiliary rope 117. Note that the Kelly rope 116 is not necessarily wound up or down by the rear winch 6. It is also possible for the lifting device 10 not to be wound up or down by the front winch 7.

[0014] (Attachment mounting part 20) The rotating body 3 constituting the main body 10 has front attachments 100 and 200 attached thereto. As shown in FIG. 3, the attachment mounting portion 20 is a structure for mounting the attachment portion 20 to the mounting member 1. The attachment mounting portion 20 is provided on the main frame 3a of the rotating body 3 from the front to the rear. As shown in FIG. 4, the attachment mounting portion 20 is provided with a front attachment. Connection pins 21 and 22 are provided for connecting to the attachments 100 and 200. These connecting pins 21 and 22 rotate in their axial direction in accordance with the expansion and contraction of a hydraulic cylinder (not shown). (direction perpendicular to the paper surface of Fig. 4) and the front attachment The pin holes 131 and 132 (see FIG. 5) are provided in the subframe 130 of the component 100. Pin holes 231, 232 provided in the subframe 230 of the front attachment 200 (See FIG. 6) by inserting the connecting pins 21 and 22 into the front attachment 100 , 200 is fixed to the attachment mounting portion 20. Note that the operation of the connecting pins 21 and 22 ( That is, the extension and contraction of the hydraulic cylinder for driving the connecting pin is controlled by operating the operation switch in the cab 4. This is carried out by.

[0015] (Leader-style front attachment 100) The leader-type front attachment 100 is connected to the rotating body 3 via connecting pins 21 and 22. The front attachment 100 performs work in accordance with the operation of the operating device. The work of the front attachment 100 is to dig the ground using the digging tool 121. and a lifting operation (auxiliary lifting hook) for lifting and lowering a load (not shown) hooked to the hook 122. The front attachment 100 will be described in detail below with reference to FIG. The following description will be given with reference to FIG. 5. Note that FIG. 5 shows the sub-attachment of the reader-type front attachment 100. FIG. 1 is an enlarged view of a main part including a frame 130, showing the front attachment 1 when disassembled. Shows the 00 position.

[0016] As shown in FIG. 1 and FIG. 5, the front attachment 100 includes an attachment body. and a sub-frame 130. The attachment body includes a reader 110, a front Frame 112, triangle frame 111, front stay 126, pin 123, Leader head 113, main winding sheave 114, auxiliary winding sheave 115, main winding rope 116, auxiliary winding rope 117, Kelly bar 118, Kelly top guide 119, Rotary drive 120, Front frame elevation cylinder 128, stay cylinder 124, thruster cylinder 127, The subframe 13 includes a drilling tool 121, a hook 122, and a guide sheave 125. 0 is a structure that is attached to an attachment mounting portion 20 provided on the rotating body 3.

[0017] The leader 110 is a long tubular member. The leader 110 is arranged vertically with respect to the ground. It can be displaced between an upright digging posture and a forward-tilted posture that is more forward than the upright digging posture. The forward inclination angle of the reader 110 is, for example, 7° with respect to the vertical direction. At the end of the reader 110 is attached a reader head 113. In addition, the reader 110 is The top guide 119 and the rotary drive 120 are supported so as to be movable up and down along the extension direction. do.

[0018] The subframe 130 is connected to the front frame 112 and the front frame raising and lowering cylinder 12. 8. Connect the lower ends of the front stays 126 to support the leader 110 (FIG. 5 The subframe 130 has pin holes (attachment mounting parts) 131 and 132 at the front and rear. 2. The attachment mounting portion 20 of the rotating body 3 is fitted to these pin holes 131 and 132. By inserting the connecting pins 21 and 22, the front attachment 100 can be rotated. Attached to body 3.

[0019] The front frame 112 is supported on the rotating body 3 via a subframe 130 so as to be capable of being raised and lowered. A triangle frame 111 is provided at the tip of the front frame 112. The triangle frame 111 is supported by a front stay 126. The reader 110 is connected to the triangle frame 111 via a pin 123. In this way, the leader 110 includes the front frame 112, the front stay 126, and is supported by a triangle frame 111 so as to be able to rise and fall.

[0020] The front frame 112 and the rotating body 3 are connected via a front frame raising and lowering cylinder 128. The front frame raising and lowering cylinder 128 is extended to raise and lower the front frame. The front frame 112 is raised, and the front frame raising and lowering cylinder 128 is contracted. The front frame 112 is lowered. Also, the leader 110 and the triangle frame 111 are lowered. The stay cylinder 124 is connected to the By extending, the leader 110 stands up around the pin 123, and the stay cylinder 1 As the diameter 24 shrinks, the reader 110 falls down around the pin 123.

[0021] The reader head 113 is attached to the upper end (tip) of the reader 110. The head 113 rotatably supports a main winding sheave 114 and an auxiliary winding sheave 115 .

[0022] The Kelly rope 116 is unwound from the rear winch 6 and wound around the main winding sheave 114. The auxiliary winding rope 117 is hung downward from the front end of the main winding sheave 114. The wire is fed from the winch 7 and wound around the auxiliary winding sheave 115. It hangs down from the front end of the

[0023] The kelly bar 118 is a long tubular member. The kelly bar 118 is a kelly sheave 114. The upper end of the kelly bar 118 is hung from the lower end of the main hoisting rope 116 that is hung from the front end of the kelly bar 118. The kelly top guide 119 is attached to the kelly bar 118. The lower end of the kelly bar 118 is The rotary drive 120 is inserted into the rotary drive 120. A drilling tool 121 is removably attached to the lower end of the kelly bar 118.

[0024] The Kelly top guide 119 is located above the rotary drive 120 and is connected to the leader 11. 0. The Kelly Top Guide 119 is also supported by the Kelly Bar 118. The kelly bar 118 is supported so as to be rotatable. It refers to rotation around an axis of rotation extending in the direction (same below).

[0025] The rotary drive (drive device) 120 is located below the Kelly top guide 119. Specifically, the rotary drive 120 is supported by the reader 110 so as to be movable up and down. The thruster cylinder 127 moves up and down in response to the extension and contraction of the thruster cylinder 127. The rotary drive 120 supports the kelly bar 118 so that the kelly bar 118 can rotate. The rotary drive 120 is raised and lowered by the extension and contraction of the raster cylinder 127. Equipped with a hydraulic motor (Kelly rotary drive motor 85 / see Figure 9) that drives the rotation of the Leeba 118 is doing.

[0026] As a result, when the leader 110 is in a digging position, the kelly bar 118 is connected to the kelly top guy. The rear end is extended vertically by a rotary drive 119 and a rotary drive 120. When the main winding rope 116 is wound up with inch 6, the kelly bar 118 rises. When the main winding rope 116 is wound down at inch 6, the kelly bar 118 descends. The excavation tool 121 attached to the lower end of the Kelly bar 118 rises and falls. The Ido 119 rises and falls together with the Kelly Bar 118.

[0027] In addition, the Kelly rotary drive motor 85 mounted on the rotary drive 120 is driven. As a result, the kelly bar 118 and the drilling tool 121 attached to the kelly bar 118 rotate. The rotary drive 120 drives the kelly bar 118 and the drilling tool 121. 2 is an example of a drive device.

[0028] The excavation tool 121 excavates the ground, for example, by rotating while being pressed against the ground. However, the specific example of the excavation tool 121 has a function of excavating the ground. The tool is not limited to an auger, and may be a drilling bucket or the like.

[0029] The hook 122 is hung from the lower end of the auxiliary winding rope 117 suspended from the front end of the auxiliary winding sheave 115. The hook 122 is configured to be able to hold luggage. When the auxiliary rope 117 is wound up at inch 7, the hook 122 rises. When the winch 7 winds down the auxiliary hoisting rope 117, the hook 122 descends. The baggage held by the hook 122 is raised and lowered. Note that the hook 122 can hold any baggage. A typical example of the cargo is iron to be inserted into the hole drilled by the drilling tool 121. Examples include muscle cages.

[0030] (Boom-type front attachment 200) The boom-type front attachment 200 is a The boom type floor is attached to the rotating body 3 via connecting pins 21 and 22. The front attachment 200 is also operated in the same manner as the reader-type front attachment 100. The excavation and lifting operations are performed according to the operation of the front attachment 200. Details will be explained using Figures 2 and 6. Figure 6 shows the front attack of the boom type. FIG. 2 is an enlarged view of a main part including a subframe 230 of the attachment 200, 1 shows the position of the front attachment 200.

[0031] As shown in FIG. 2 and FIG. 6, the front attachment 200 includes an attachment body. and a subframe 230. The attachment body includes a boom 210, a front Frame 212, rotary frame 213, main winding sheave 214, auxiliary winding sheave 215, main winding Rope 216, auxiliary rope 217, kelly bar 218, rotary drive 220, boom lifter 2, the boom extension cylinder 228 (not shown in FIG. 2, see FIG. 7), Front frame elevation cylinder 225, rotary frame elevation cylinder 226, thruster cylinder The subframe 23 includes a cylinder 227, a drilling tool (not shown), and a hook 222. 0 is a structure that is attached to an attachment mounting portion 20 provided on the rotating body 3.

[0032] The subframe 230 supports the lower end of the front frame 212 and the lower end of the boom 210. These are connected to the boom hoisting cylinder 224 and the front frame hoisting cylinder 225. The subframe 230 has pin holes (for attachment mounting) at the front and rear. The rotating body 3 is attached to these pin holes 231 and 232. The front attachment is connected by inserting the connecting pins 21 and 22 provided in the attachment portion 20. The member 200 is attached to the rotating body 3.

[0033] The front frame 212 is connected to the boom 210 via a front frame raising and lowering cylinder 225. The front frame 212 is supported so as to be able to rise and fall. The rotary frame 213 is rotatably mounted on the rotary drive 2. 20 and thruster cylinder 227 are attached.

[0034] The boom 210 is supported on the rotating body 3 via a subframe 230 so as to be capable of being raised and lowered. In this embodiment, the boom 210 is of a telescopic boom type. It may be of the lattice boom type.

[0035] The boom 210 rotates in accordance with the extension and contraction of the boom hoisting cylinder 224. It stands up or lies down relative to the body 3.

[0036] The boom 210 and the front frame 212 are connected via a front frame raising and lowering cylinder 225. The front frame is connected to the front frame by the extension and contraction (operation) of the front frame extension cylinder 225. The angle of the frame 212 can be adjusted.

[0037] The front frame 212 and the rotary frame 213 are connected to a rotary frame raising and lowering cylinder. 226, and the rotary frame elevation cylinder 226 is extended and retracted (operated). This makes it possible to adjust the angle of the rotary frame 213.

[0038] The rotary drive 220 rises and falls with the extension and contraction of the thruster cylinder 227. The main winding sheave 214 is supported by a main winding rope 216. ... rope 216 is suspended from the front end of the main winding sheave 214. At the tip of the kelly bar 218, a drilling tool such as a drilling bucket (not shown) is attached. A rotary drive 220 rotates the kelly bar 218. This allows the drilling tool to excavate the ground. Same as 00.

[0039] (Hydraulic circuit configuration) - Boom type - Next, the hydraulic circuit configuration of the earth drill machine 1 will be described. When the front attachment 200 of the earthed type is attached to the main body 10, The hydraulic circuit configuration of the drilling machine 1 will be described. Figure 7 shows the hydraulic circuit configuration of the boom-type front attachment. 2 is an example of a hydraulic circuit configuration diagram of the earth drill machine 1 with the hydraulic circuit 200 attached.

[0040] As shown in FIG. 7, the earth drilling machine 1 may include, for example, four variable or fixed displacement The hydraulic pump P1 is a hydraulic actuator that is a traveling Motor (left) 80, rear winch drive motor 84, Kelly rotation drive motor 85, and brake The boom lifting cylinder 224 and the control valves 30, 34, 35, 36 9, and each hydraulic actuator 80, 84, 85, 224 is connected to a hydraulic pole. It is driven by pressure oil supplied from pump P1.

[0041] The hydraulic pump P2 is connected to the travel motor (right) 81, which is a hydraulic actuator, and the front winch The boom drive motor 83, and the boom telescopic cylinder 228 and the control valves 31, 33, and 40, Each hydraulic actuator 81, 83, 228 is connected to a hydraulic pump P2 It is powered by pressurized oil supplied from

[0042] The hydraulic pump P3 (second hydraulic pump) is a hydraulic actuator that includes a swing motor 82 and and the front frame raising and lowering cylinder 225 via control valves 32 and 37, respectively. Each hydraulic actuator 82, 225 is driven by hydraulic oil supplied from a hydraulic pump P3. Move.

[0043] The hydraulic pump P4 (first hydraulic pump) is a thruster cylinder which is a hydraulic actuator. 227 and the rotary frame raising and lowering cylinder 226 via the control valves 36 and 38, respectively. Each hydraulic actuator 227, 226 is connected to a hydraulic pump P4. It is powered by pressurized oil.

[0044] In addition, the actuators (hydraulic motors, hydraulic cylinders, etc.) connected to the hydraulic pumps P1 to P4 ) is not limited to the configuration shown in FIG. 7, and the number of hydraulic pumps is not limited to four.

[0045] (Controller 75 Input / Output) -Boom Type- Next, the input / output of the controller 75 will be described. When the front attachment 200 is attached to the main body 10, The input / output of the boom type front attachment 20 will be described. FIG. 1 is a block diagram showing the input / output of the controller 75 with the casing 75 mounted. In FIG. 8, dotted lines indicate electrical signals, and solid lines indicate hydraulic piping.

[0046] The controller 75 includes a CPU (not shown) for performing various calculations, a CPU for executing calculations, etc. Storage devices such as ROM and HDD that store the programs to execute the programs, and RAM is the working area during execution, and the interface is used to send and receive data with other devices. The hardware includes a communication interface that is an interface to the CPU. Each function of the controller 75 is implemented by the CPU. This is achieved by loading various programs stored in the storage device into RAM and executing them. will be done.

[0047] In this embodiment, the front attachment 100 is a leader type and the front attachment 102 is a boom type. The control programs for the attachment 200 and the attachment 201 are stored in the storage device. is a control program executed depending on the presence or absence of an input signal (predetermined signal) from the boom length meter 70. Specifically, the boom length meter 70 measures the length of the boom 210. Since the length of the boom 210 detected by the boom length meter 70 is measured, the controller 75 When the length data is input, the CPU It determines that the boom is attached to the main body 10 and executes the control program for the boom. On the other hand, if there is no input signal from the boom length meter 70, the CPU will The attachment 100 is determined to be attached to the main body 10, and the control program for the reader is started. In this manner, the controller 75 controls the front attachment 100 and the front It functions as an identification means for identifying which of the front attachments 200 is being used. In this embodiment, a signal related to the extension / retraction operation of the boom 210 is generated by the boom length meter 70. The signal related to the length of the boom 210 is measured, but is not limited to this. You can measure it.

[0048] As shown in FIG. 8, the controller 75 includes various operation levers and the like provided in the cab 4. An operation signal is input from the operation switch (operation device). Specifically, the travel lever (left) 50, travel lever (right) 51, turning lever 52, front winch lever 53, rear winch Cantilever 54, Kelly rotation lever 55, thruster switch 56, front frame elevation switch 57, rotary frame hoisting switch 58, boom hoisting lever 59, and boom Each operation signal from the telescopic lever 60 is input to a controller 75 .

[0049] When an operation signal from the left travel lever 50 is input to the controller 75, The controller 75 outputs a control signal to the control valve 30. Then, the control valve 30 operates to control the oil. Pressure oil is supplied from the pressure pump P1 to the travel motor (left) 80, which drives the travel motor (left) 80. This causes the running object 2 to run.

[0050] When an operation signal from the travel lever (right) 51 is input to the controller 75, The controller 75 outputs a control signal to the control valve 31. Then, the control valve 31 operates to control the oil pressure. Pressure oil is supplied from the pressure pump P2 to the travel motor (right) 81, which drives the travel motor (right) 81. This causes the running object 2 to run.

[0051] When an operation signal from the turning lever 52 is input to the controller 75, the controller 75 The control signal is output to the control valve 32. Then, the control valve 32 is operated to control the hydraulic pump. Pressure oil is supplied from the pump P3 to the rotation motor 82, and the rotation motor 82 rotates. The rotating body 3 rotates.

[0052] When an operation signal from the front winch lever 53 is input to the controller 75, The controller 75 outputs a control signal to the control valve 33. Then, the control valve 33 is operated. Then, hydraulic oil is supplied from the hydraulic pump P2 to the front winch drive motor 83, The inch drive motor 83 rotates. This causes the front winch 7 to rotate (auxiliary (hoisting crane operation).

[0053] When an operation signal from the rear winch lever 54 is input to the controller 75, The controller 75 outputs a control signal to the control valve 34. Then, the control valve 34 operates, Pressure oil is supplied from the hydraulic pump P1 to the rear winch drive motor 84, and the rear winch drive motor This rotates the rear winch 6 .

[0054] When an operation signal from the Kelly rotation lever 55 is input to the controller 75, The controller 75 outputs a control signal to the control valve 35. Then, the control valve 35 operates to control the oil pressure. Pressure oil is supplied from the pressure pump P1 to the Kelly rotary drive motor 85, and the Kelly rotary drive motor 8 5 rotates. This causes the rotary drive 220 to rotate.

[0055] When an operation signal from the thruster switch 56 is input to the controller 75, The controller 75 outputs a control signal to the control valve 36. Then, the control valve 36 operates to control the oil pressure. Pressure oil is supplied from a pressure pump (first hydraulic pump) P4 to a thruster cylinder 227, and the thruster The start cylinder 227 expands and contracts. This causes the rotary drive 220 to move up and down. do.

[0056] When an operation signal from the front frame raising / lowering switch 57 is input to the controller 75, The controller 75 outputs a control signal to the control valve 37. Then, the control valve 37 When it is activated, hydraulic oil is supplied from the hydraulic pump P3 to the front frame raising and lowering cylinder 225. The front frame lifting cylinder 225 extends and retracts. 12 moves up and down.

[0057] When an operation signal from the rotary frame raising / lowering switch 58 is input to the controller 75, The controller 75 outputs a control signal to the control valve 38. Then, the control valve 38 When it is activated, hydraulic pump P4 supplies pressure oil to the rotary frame raising and lowering cylinder 226. The rotary frame raising and lowering cylinder 226 extends and retracts. 13 moves up and down.

[0058] When an operation signal from the boom hoist lever 59 is input to the controller 75, The controller 75 outputs a control signal to the control valve 39. Then, the control valve 39 operates to control the oil pressure. Pressure oil is supplied from the pressure pump P1 to the boom hoisting cylinder 224, and the boom hoisting cylinder 22 As a result, the boom 210 performs a raising and lowering operation (hoisting operation).

[0059] When an operation signal from the boom telescopic lever 60 is input to the controller 75, The controller 75 outputs a control signal to the control valve 40. Then, the control valve 40 operates to control the oil pressure. Pressure oil is supplied from the pressure pump P2 to the boom telescopic cylinder 228, and the boom telescopic cylinder 22 8 is extended or retracted. This causes the boom 210 to be extended or retracted.

[0060] In this embodiment, various operation levers 50, 51, 52, 53, 54, 55, 59, and 60 are examples of electric levers, but of course, They may be hydraulic levers.

[0061] (Hydraulic circuit configuration) -Leader type- Next, when the reader-type front attachment 100 is attached to the main body 10, The hydraulic circuit configuration of the earth drill machine 1 will be described. FIG. 1 is a hydraulic circuit diagram of an earth drill machine 1 with an attachment 100 attached. In this embodiment, the front attachment 100 and the front attachment 101 are connected to a common main body 10. 200 is selectively attached, so the description of the parts common to FIG. 7 will be omitted. .

[0062] As shown in FIG. 9, a reader-type front attachment 100 is attached to the main body 10. In this state, the front frame hoist cylinder 224 (see FIG. 7) is replaced by the front frame hoist cylinder 226. The cylinder 128 is connected to the hydraulic pump P1 and acts as a front frame lifting cylinder (see FIG. 7). Instead of 225, a thruster cylinder 127 is connected to the hydraulic pump P3, and the thruster cylinder In place of the hydraulic pump 227 (see FIG. 7), a stay cylinder 124 is connected to the hydraulic pump P4. In addition, in the Leader type, the boom telescopic cylinder 228 and the rotary frame hoisting cylinder 2 Since there is no alternative to the control valve 26 (see FIG. 7), the control valve 40 and the control valve 38 are connected to will be vacant.

[0063] (Controller 75 input / output) -Reader type- Next, the input / output of the controller 75 will be described. The input / output of the controller 75 with the attachment 100 attached is shown in Fig. In this embodiment, the front attachment 1 is mounted on a common main body 10. Since the configuration allows selective installation of 00 and 200, the explanation of the parts common to Figure 8 is omitted. Omitted.

[0064] As shown in FIG. 10, the input side of the controller 75 has basically the same configuration as that shown in FIG. However, for reasons described later, the thruster switch 56 and the front frame elevation switch 57 The output destination for the input is changed by the control of the controller 75. A stay cylinder 124 is connected to the control valve 37, and a thruster cylinder 127 is connected to the control valve 37. The control valve 39 is connected to a front frame raising and lowering cylinder 128 (see FIG. (See also item 9.)

[0065] In this embodiment, the thrust cylinder constituting the boom-type front attachment 200 A hydraulic pump P4 with a sufficient discharge flow rate is used to operate the rotor 227. However, In this hydraulic pump P4, the thruster constituting the leader type front attachment 100 A sufficient flow rate of pressure oil cannot be supplied to the cylinder 127. If the flow rate of the pressure oil is insufficient, the speed of the thruster cylinder 127 will slow down, resulting in poor workability. Therefore, in this embodiment, a reader-type front attachment 100 is attached to the main body 10. When attaching the thruster cylinder 127, connect it to the tip of the control valve 37, and connect the stay cylinder 1 24 is connected to the tip of the control valve 36. The hydraulic pump P3 (second hydraulic pump) supplies pressure oil to the thrust shaft. The flow rate of the pressure oil supplied to the rotor cylinder 127 becomes sufficient.

[0066] However, as shown in FIG. 8, in the case of a boom-type front attachment 200, The control valve 36 is operated by the operation of the thruster switch 56, and the control valve 37 is operated by the front frame lifter. It is operated by operating the front switch 57. Therefore, the front attachment 1 of the reader type In the case of 00, if the controller 75 does not change the output destination for the input, When the operator operates the thruster switch 56, the rotary drive 120 When the valve 37 moves up and down, the stay cylinder 124 also moves. Since the thruster cylinder 127 is connected to the thruster cylinder 127, the operator can operate the front frame elevation switch. When the 57 is operated, the leader 110 is lowered, but the thruster cylinder This will put Da127 into operation.

[0067] This may result in the front attachment 100 moving in a manner contrary to the operator's intention. Therefore, in this embodiment, a reader-type front attachment When attaching the unit 100 to the main body 10, the thruster switch 56 and the front frame lifter The controller 75 controls the switch 57 to change the output destination in response to the input. In this case, the hydraulic actuator operates in response to the operation of the operator. In the embodiment, the output destination of the thruster switch 56 and the front frame elevation switch 57 is controlled by a controller. By switching between the Controller 75, both the leader and boom types can be used seamlessly. The same excavation operation can be performed with the same operating device.

[0068] As described above, according to this embodiment, the following advantageous effects are achieved.

[0069] Leader-type front attachment 100 and boom-type front attachment 200 Since the above-mentioned can be selectively attached to the main body 10, the boom type earth drill machine and the lead can be used together. Replacement of front attachments 100 and 200 with a Da-type earth drill machine This can be easily done with just

[0070] For example, the boom-type front attachment 200 may be replaced with a reader-type front attachment. When replacing the boom type front axle with the boom 100, first remove the connecting pins 21 and 22. The attachment 200 is removed from the attachment mounting portion 20 (first step). The subframe 130 of the front attachment 100 is attached to the attachment mounting portion 2. 0, and insert the connecting pins 21 and 22 into the pin holes 131 and 132 to form a reader type The front attachment 100 is attached to the attachment mounting portion 20 (second step). In this way, the front attachments 100 and 200 can be easily replaced. The specifications of the drilling machine 1 can be changed. This allows for on-site reconfiguration, improving work efficiency. do.

[0071] The front attachments 100 and 200 are respectively provided with subframes 130 and 23. 0, it is possible to attach it to the attachment mounting portion 20 of the main body 10. Also, the pin holes 131 and 132 of the subframe 130 and the pin holes 231 and 232 of the subframe 230 The 232 is designed to be universal, so it can be used with, for example, a boom-type earth drill machine on-site. By simply replacing the front attachment, it becomes a leader-type earth drill machine. There is no need to prepare two earth drills, one boom type and one reader type. In other words, in the past, two types of earth drills were required to accommodate various work sites and construction methods. In this embodiment, the front attachment 1 is used. Since it is necessary to prepare and replace only 00 and 200, costs can be reduced.

[0072] In addition, even if the front attachments 100 and 200 are interchanged, the operation device and excavation work can be performed without any problems. Since the correspondence between the two is consistent, good operability is maintained. This eliminates the inconvenience of switching between the front attachments 100 and 200. There is none.

[0073] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit and scope of the present invention. All of the technical matters included in the technical ideas described in the claims are possible. The above-mentioned embodiment is a preferred example, but it will be understood by those skilled in the art that Various alternatives, modifications, variations, or improvements may be realized from the teachings of this specification. These are within the scope of the appended claims.

[0074] For example, in FIG. 10, the controller 75 is programmed (software) to The output destination for the input of the front frame raising switch 57 and the front frame lowering switch 57 can be changed. However, the function of the controller 75 may be implemented as, for example, an integrated circuit or other hardware. In this case, the electrical wiring connecting the thruster switch 56 and the control valve 36 may be The wire is replaced with the electrical wiring connecting the front frame raising switch 57 and the control valve 37. By doing so, it is possible to obtain the same effects as those of the above-mentioned embodiment. Since the roller 75 is not required, the cost is low. [Explanation of symbols]

[0075] 1 Earth drill machine 2. Running body 3 Rotating body 4 Cab 5 Counterweight 6 Rear winch 7 Front winch 10 Main unit 20 Attachment mounting part 21, 22 Connecting pin 30~40 Control valve 50 Travel lever (left) 51 Travel lever (right) 52 Swivel lever 53 Front winch lever 54 Rear winch lever 55 Kelly Rotating Lever 56 Thruster switch 57 Front frame lowering switch 58 Rotary frame lift switch 59 Boom hoist switch 60 Boom telescopic lever 70 Length Meter 75 Controller (Identification Means) 80 Travel motor (left) 81 Travel motor (right) 82 Swing motor 83 Front winch drive motor 84 Rear winch drive motor 85 Kelly rotary drive motor 100 Front attachment (Leader type attachment) 110 Leader 111 Triangle Frame 112 Front Frame 113 Leader Head 114 Main winding sheave 115 Auxiliary winding sheave 116 Main winding rope 117 Auxiliary rope 118 Kellyba 119 Kelly Top Guide 120 Rotary drive (drive device) 121 Drilling Tools 122 Hook 123 pin 124 Stay Cylinder 125 Tension roller 126 Front stay 127 Thruster Cylinder 128 Front frame lifting cylinder 130 Subframe 131, 132 Pin hole (attachment mounting part) 200 Front attachment (boom type attachment) 210 Boom 212 Front Frame 213 Rotary Frame 214 Main winding sheave 215 Auxiliary sheave 216 Main winding rope 217 Auxiliary rope 218 Kellyba 220 Rotary drive (drive device) 222 Hook 224 Boom derrick cylinder 225 Front frame lifting cylinder 226 Rotary Frame Lifting Cylinder 227 Thruster Cylinder 228 Boom telescopic cylinder 230 Subframe 231, 232 Pin hole (attachment mounting part) P1 Hydraulic Pump P2 Hydraulic Pump P3 Hydraulic Pump (Second Hydraulic Pump) P4 Hydraulic pump (first hydraulic pump)

Claims

[Claim 1] An earth drilling machine comprising a main body and an attachment attached to the main body for connecting a drilling tool, The attachment may be selected from a boom type attachment and a leader type attachment, the body has an attachment mounting portion including a common connection portion for selectively mounting the boom-type attachment and the leader-type attachment; The boom type attachment and the leader type attachment each have an attachment body and a subframe that supports the attachment body and is attached to the attachment mounting portion, The attachment mounting portion is An earth drill machine, characterized in that the subframe of the boom-type attachment and the subframe of the leader-type attachment are configured to be selectively attached by utilizing the connecting portion.

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