JP3245536B2 - Casing driver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing driver for pushing and pulling large-diameter steel pipe piles and steel pipes used for foundation work of construction and civil engineering, and more particularly to a casing driver with variable rotation speed and pushing speed. About.

[0002]

2. Description of the Related Art Conventional casing drivers include, for example,
As described in Japanese Patent Publication No. 7-74500, a thruster mounted on a base frame so as to be able to move up and down by a thrust cylinder, a rotating body rotatably mounted on the thruster by a hydraulic motor, and an attachment to the rotating body The casing is held by a casing grasping band, and the casing is held by rotating a rotating body by a hydraulic motor, and a thrust cylinder is moved up and down by a thrust cylinder. Pushing or pulling out.

[0003] In such a casing driver,
The four thruster guide frames, which guide the thruster by sliding in the vertical direction and have a guide portion that receives a rotational reaction force and a tilt reaction force, are arranged such that adjacent ones thereof are vertically and horizontally aligned with respect to the vertical and horizontal center lines passing through the center of the casing. And placed on the base frame so as to be line-symmetrical with each other, and make four thrust cylinders line-symmetric with each other with respect to the vertical and horizontal center lines passing through the center of the casing. The four thrust cylinders are provided so as to be close to the four guide frames, respectively.

In a conventional casing driver, rotation of the casing is performed by a hydraulic motor for rotating the casing, and pushing of the thruster is performed using a thruster cylinder. The rotation speed of the casing can be adjusted by changing the pump discharge amount of a pump that supplies pressure oil to the hydraulic motor. However, the pushing speed of the thruster is fixed, and only the ON / OFF control of the thruster pushing is performed. That is, the operator of the casing driver determines the state of excavation,
The thruster pushing switch is turned on / off as appropriate to push the thruster intermittently.

[0005]

In a conventional casing driver, an operator is required to take the following depending on the condition of the ground.
It is necessary to adjust the rotation speed of the casing appropriately and to intermittently operate the pushing of the thruster while observing the bite amount of the cutting edge at the tip of the casing, which has a problem that the operation is complicated. For example, if an excessive load is applied to the thruster during excavation of hard ground, the casing driver itself may be lifted.

SUMMARY OF THE INVENTION It is an object of the present invention to facilitate speed adjustment,
It is to provide a casing driver which is easy to operate.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a casing driver for rotating a casing and pushing a thruster holding the casing, wherein the rotational speed of the casing and the thruster pushing speed are variable. Control means for controlling, and operating means for setting the rotational speed of the casing and the thruster pushing speed, wherein the operating means adjusts the rotational speed of the casing and the thruster pushing speed as a two-dimensional combination. In this configuration, the speed can be easily adjusted and the operation can be facilitated.

In the casing driver, preferably, the speed adjusting means is constituted by a plurality of switches arranged in a two-dimensional matrix, and one side of the two-dimensional matrix is connected to a plurality of stages of rotational speeds of the casing. The other side is made to correspond to the thruster pushing speed in a plurality of stages, the rotational speed of the casing in an arbitrary stage in the one side, and the rotational speed of the stage in the other side in the other side. By the switch located at the intersection with the rotational speed of the casing, the rotational speed of the casing and the rotational speed of the casing are simultaneously selected.By selecting one of the switches in the matrix, Speed adjustment can be easily performed.

In the casing driver, preferably, the plurality of switches are touch switches displayed on a touch panel, and displayed on a sub-display screen during speed adjustment with respect to a main display screen on the touch panel. With such a configuration, the size of the display panel can be reduced.

In the casing driver, preferably, the speed adjusting means comprises a two-dimensional coordinate plane and means for designating arbitrary coordinates on the coordinate plane.
One axis of the dimensional coordinate plane is made to correspond to the rotation speed of the casing, the other axis is made to correspond to the thruster pushing speed, and the rotation speed of any one of the casings in the one axis and the other By instructing the coordinates located at the intersection with the rotation speed of any of the casings in the axis by the instruction means, the rotation speed of the casing and the rotation speed of the casing are simultaneously selected, By selecting one of the switches in the matrix, fine speed adjustment can be easily performed.

In the casing driver, preferably, the speed adjusting means comprises a lever operable in all directions of 360 degrees, and the inclination angle of the operating direction of the lever in the first direction is set to the angle of the casing. Corresponding to the rotation speed, the inclination angle in the second direction orthogonal to the first direction is associated with the thruster pushing speed, and the lever is operated to have an arbitrary inclination angle, whereby the casing of the casing is rotated. The rotation speed and the rotation speed of the casing are simultaneously selected. By selecting one of the switches in the matrix, fine speed adjustment can be easily performed.

In the casing driver, preferably, the speed adjusting means is constituted by a two-dimensional combination having the horizontal axis of the rotational speed of the casing and the vertical axis of the thruster pushing speed. By making the combined position of the pushing speed correspond to the biting angle of the blade fixed to the tip of the casing with respect to the ground, the optimal casing rotation speed and thruster pushing speed are realized by considering the biting angle of the blade edge. Can be easily found.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A casing driver according to an embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram illustrating the principle of excavating a casing driver according to an embodiment of the present invention.

A plurality of blades 12 are fixed to the tip of the cylindrical casing 10. The casing 10 rotates, the ground is cut by the blade 12, and the thruster is pushed in, so that the casing 10 excavates the ground. Here, the fact that the casing 10 cuts into the ground while rotating means that, when focusing on the vicinity of the cutting edge of the blade 12 of the casing 10, the vector A of the rotational speed of the casing and the vector B of the pushing speed of the thruster are obtained. The cutting edge bites in the direction of the composite vector Z.

When the state of the ground is the same, the smaller the bite angle α, the smaller the rotational torque of the casing, and the larger the bite angle α, the larger the rotational torque of the casing. Conversely, when the ground becomes harder, it is necessary to reduce the bite angle α, and when the ground becomes softer, the bite angle α can be increased.

That is, when excavating using a casing driver, the working efficiency can be improved by adjusting the rotational speed of the casing and the pushing speed of the thruster according to the condition of the ground. In the hard ground, it is necessary to reduce the excavation torque. Therefore, the thruster pushing speed is suppressed and the rotating speed of the casing is increased to reduce the amount of bite into the cutting edge of the casing. Also, in soft ground, the pushing time of the thruster is increased to shorten the construction time. However, if the rotating speed of the casing is increased more than necessary, the wear of the cutting edge of the casing is promoted.

When the operator operates the casing driver, he or she is conscious of the bite angle α, so that it is easy to find the optimum rotation speed of the casing and the pushing speed of the thruster, and the speed adjustment becomes easy. .

Next, the speed control of the casing driver will be described with reference to FIG. FIG. 2 is a block diagram of a control system of the casing driver according to one embodiment of the present invention.

The casing is rotated by two casing-connected hydraulic motors 20A and 20B for rotating the casing. The thruster is pushed in by four thruster cylinders 30A, 30B, 30C, 30 connected in parallel.
D. The rotation speed of the casing can be changed by changing the amount of pressure oil supplied from the power unit 100 to the hydraulic motors 20A and 20B. Further, in this embodiment, the thruster pushing speed is also variable, and the thruster pushing speed can be changed by changing the amount of pressure oil supplied from the power unit 100 to the thruster cylinders 30A, 30B, 30C, 30D.

The power unit 100 includes an engine 110
Pumps 120 and 130, electromagnetic switching valves 140 and 150, and a CPU 160 for controlling.

From the pump 120, the hydraulic motors 20A, 20A
The direction of the pressure oil supplied to B is controlled by the electromagnetic switching valve 140 so that the flow direction of the pressure oil is controlled.
Forward / reverse rotation, that is, forward / reverse rotation of the casing. When the electromagnetic switching valve 140 is in the neutral position, the rotation of the casing is stopped.

The direction of the pressure oil supplied from the pump 130 to the thruster cylinders 30A, 30B, 30C, 30D is controlled by the electromagnetic switching valve 150 so that the thruster cylinders 30A, 30B, 30C, 30D.
Of the thruster, that is, the pushing and lifting of the thruster can be changed. When the electromagnetic switching valve 150 is in the neutral position, the thruster is not pushed.

The switching operation of the electromagnetic switching valves 140 and 150 is controlled by a CPU 160 provided in the power unit 100. That is, signals from various sensors (engine speed sensor, pump discharge pressure sensor, etc.) provided in the power unit 100 are input to the CPU 160, and the detection result is transmitted to the operation unit 100.
Send to 0. The CPU 160 also operates the electromagnetic switching valve 1 based on an operation signal from the operation unit 1000.
The switching between 40 and 150 is controlled by a known method, and each part performs the operation specified by the operation signal.

The CPU 160 includes electromagnetic switching valves 140 and 15
0 and the pumps 120, 13
The ejection amount of 0 is variably controlled. By changing the discharge amount of the pump 120, the rotation speeds of the hydraulic motors 20A and 20B,
That is, the rotation speed of the casing can be changed. Further, by changing the discharge amount of the pump 130, the speed of the thruster cylinders 30A, 30B, 30C, 30D, that is, the thrusting speed can be changed.

The control of the discharge amounts of the pumps 120 and 130 is as follows.
This is performed by the CPU 160 provided in the power unit 100. That is, signals from various sensors (engine speed sensor, pump discharge pressure sensor, etc.) provided in the power unit 100 are input to the CPU 160, and the detection result is transmitted to the operation unit 1000. The CPU 160 also operates the operation unit 10
Based on the operation signal from 00, the control of the discharge amount of the pumps 120 and 130 is controlled by a known method, and each part performs the operation specified by the operation signal.

The setting of the rotation speed of the casing and the pushing speed of the thruster and other controls of the casing driver are performed by the operation unit 1000 which is located at a position separated from the power unit 100. The operation unit 1000 includes an operation panel 1100 and a CPU 1200. The operation panel 1100 is a touch panel 1100T for inputting conditions such as a rotation speed and a pressing speed.
And various switches 1100S. Operation information from the touch panel 1100T and the switch 1100S is read by the CPU 1200,
The data is transmitted to the CPU 160 of the power unit 100 via the communication cable 200. The CPU 160 determines the pumps 120 and 130 and the electromagnetic switching valve 1 based on the operation information.
By controlling 40 and 150, the rotational speed of the casing and the pushing speed of the thruster are varied.

Next, the configuration of the operation panel 1100 will be described with reference to FIG. FIG. 3 is an arrangement diagram of switches of an operation panel used for a casing driver according to an embodiment of the present invention.

As shown in FIG. 3, a touch panel 1100T is disposed above the operation panel 1100, and five switches 1100S are disposed below the touch panel 1100T. Emergency stop button 1100S among switches 1100S
Reference numeral 1 denotes a button for stopping the operation of the casing driver in an emergency. By pressing this button, the casing driver is emergency stopped. Operation power switch 1100S
Reference numeral 2 denotes a power switch for the entire operation unit 100.

The casing turning lever 1100S3
Is a lever that controls the rotating operation of the casing.In the neutral position, the casing stops rotating.When the lever is tilted to one side, the casing rotates forward and is tilted to the other side. , The casing is reversed. The casing thrust operation lever 1100S4 is a lever for operating the thrust operation of the casing. When the lever is depressed, the thrust cylinder expands and contracts, and the casing driver is pushed in and pulled out. Lever 1 on one side
When the 100S4 is turned down, the casing is pushed in, and when it is turned down to the other side, the casing is pulled out.

The display screen of the touch panel 1100T will be described in detail with reference to FIG. FIG. 4 is a screen layout diagram of a touch panel in an operation panel used for a casing driver according to an embodiment of the present invention, and illustrates a state of a main screen.

The display screen of the touch panel 1100T is divided into an operation section and a display section. First, the operation section will be described. The operation unit is disposed substantially in the lower half of the touch panel 1100T.
2, horn switch 1104, buzzer stop switch 11
06, power up switch 1108, thruster speed-up switch 1110, main band close switch 1112, main band open switch 1114, main band stop switch 1116, full swing switch 1118, swing switch 1120, fixed position stop switch 1122, speed adjustment switch 1124 and the like.

The work mode changeover switch 1102 switches the work mode between the excavation mode and the extraction mode when the excavation work is performed. The display is switched to the display of “extraction”, and when pressed again, the display is switched to the display of “excavation” in the original excavation mode.
In the excavation mode, only the casing thrust lowering mode is enabled.

The horn switch 1104 is an operation switch of the horn attached to the main body of the casing driver, and when this switch is pressed, a warning sound is output from the horn.

The buzzer stop switch 1106 is a switch for stopping the buzzer sound generated from the operation panel when any abnormality occurs in the casing driver. The operator confirms the contents of an abnormality content display section 1134 described later and sets this switch. Pressing stops the buzzer sound.

The power-up switch 1108 is a switch for increasing the turning torque and the thrust force of the casing. When the switch is pressed in an emergency such as when the casing cannot be pulled out, the relief pressure is increased and the turning torque and the thrust force are increased. It increases the thrust force by 10 to 20%.

The thruster speed-up switch 1110 is a switch for increasing the thrust pushing speed. After the casing thrust operation lever 1100S4 is pushed and then this switch is pushed, the cylinder speed of the thruster cylinder 30 for casing thrust is increased. Speed up. This speed-up state is released by stopping the operation of the casing thrust or pressing the thruster speed-up switch 1110 again.

A main band close switch 1112, a main band open switch 1114, and a main band stop switch 1116 are used to open and close the band for rotating the casing.
This is a switch for controlling the stop. When the main band close switch 1112 is pressed, the main band is closed, and when the main band open switch 1114 is pressed, the main band is opened. When the main band stop switch 1116 is pressed during the opening and closing operation of the main band, the opening and closing operation of the band is stopped.

As a switch for selecting the turning mode,
There is a full swing switch 1118 and a swing switch 1120. When the full swing switch 1118 is pressed, the casing always performs a full swing operation in one direction.
When the button is pressed, the casing performs a swinging operation in which the casing alternately rotates forward and backward in a predetermined cycle. Fixed position stop switch 1122
By being pushed during rotation of the casing, the casing can be automatically stopped at a predetermined position.

The speed adjustment switch 1124 is a switch for displaying a sub-screen (window) for adjusting the rotation speed and the thrust pushing speed of the casing in the present embodiment, and details thereof will be described with reference to FIG. It will be described later.

Next, the display section will be described. The display unit is disposed in substantially the upper half of the touch panel 1100T, and includes a main band opening / closing mode display unit 1130, a sourcing thrust lowering mode display unit 1132, an abnormality content display unit 1134, a pump pressure display unit 1136, a main band state display unit 1138, Sub-band state display section 1140, joint state display section 1142, engine state display section 11
44, vertical meter 1146, engine speed display section 114
8, a thruster stroke display unit 1150 and the like.

Main band opening / closing mode display section 1130
Indicates whether the opening / closing mode of the main band is the interlocking mode or the single-action mode. In the case of the interlocking mode, the sub-band is interlocked with the operation of the main band that turns the casing, and in the single action mode, only the main band operates.

Casing thrust lowering mode display section 11
Reference numeral 32 indicates whether the lowering mode of the casing thrust is selected from the pushing mode, the free lowering mode, and the automatic excavation mode. The state shown in the figure indicates that the pressing mode is selected.

The pushing mode is a mode in which the thruster is lowered by the force of the thrust cylinder 30, and the casing is pushed. The free descending mode is a mode in which the thruster descends by its own weight. The automatic excavation mode is a mode in which the lowering speed of the thruster is automatically varied and lowered so that the rotational torque of the casing becomes constant.

The abnormality content display section 1134 displays the content of the device abnormality of the casing driver.

The pump pressure display section 1136 displays the pressure of each section in the power unit 100. "N
o. "1 PU pressure" indicates the discharge pressure of the pump 120 when the casing shown in FIG. 2P
"U pressure" indicates the discharge pressure of the pump 130 when the casing driver is pushed in and pulled out by the thrust cylinder. "Pilot pressure" indicates the discharge pressure of a pump (not shown) of the operation system. , The ascending pressure of the casing thrust is displayed, and the “thruster compression pressure” indicates the descending pressure of the casing thrust. 2PU pressure ".

The main band status display section 1138 displays the fully closed / open status of the main band. The sub-band state display section 1140 displays the fully closed / open state of the sub-band. The joint state display unit 1142 displays the connection position / retreat position state of the joint device.

The engine status display section 1144 displays the running / stopped status of the engine.

The vertical meter 1146 displays the left and right inclination angles and the front and rear inclination angles of the casing driver. As for the display method, for the left-right inclination, the rightward slope is displayed as a positive value, and the leftward slope is displayed as a negative value. As for the front-rear inclination, the rear drop is displayed as a positive value, and the front drop is displayed as a negative value.

The engine speed display section 1148 indicates whether the engine speed is an idle speed, a normal speed, or a maximum speed with the power up by "idle", "common use", and "highest". . Here, at the idle speed, the rotation of the casing and the thruster do not operate. The idle speed is, for example, 700r
pm, the normal rotation speed is, for example, 1500 rpm, and the maximum rotation speed is, for example, 1800 rpm.

The thruster stroke display section 1150 displays the stroke amount of the casing thruster.

Next, a display screen for speed adjustment will be described with reference to FIG. FIG. 5 is a layout view of a sub-screen of a touch panel in an operation panel used for a casing driver according to an embodiment of the present invention. By pressing the speed adjustment switch 1124 in the state shown in FIG. 4, a speed adjustment auxiliary screen 1160 shown in FIG. 5 is displayed. The speed adjustment auxiliary screen 1160 is displayed in a window format, and is shown in FIG.
The same reference numerals indicate the same parts.

On the speed adjustment assistance screen 1160, the horizontal axis is 5
Switches L1, L in a two-dimensional matrix arrangement, representing the rotational speed of the stage, and the vertical axis representing the thrusting speed of the thruster in three stages.
2, L3, L4, L5, M1, M2, M3, M4, M
5, H1, H2, H3, H4, and H5 are displayed.
“5” of the five rotation speeds represents the highest rotation speed. Assuming that the maximum rotation speed is, for example, 2 rpm, the rotation speed “5” indicates a 100% rotation speed, the rotation speed “4” indicates 80% of the maximum rotation speed, and the rotation speed “3” indicates The maximum rotation speed indicates 60%, the rotation speed “2” indicates 40% of the maximum rotation speed, and the rotation speed “1” indicates 20% of the maximum rotation speed. The rotation speeds "1", "2", and "3" have low rotation speeds but large rotation torques, and have rotation speeds "4" and "5".
Means that the rotation speed is high but the rotation torque is small.

"High" of the three stages of thrust pressing speeds indicates the maximum pressing speed. Assuming that the maximum pressing speed is, for example, 75 cm / min, the pressing speed “high” indicates a pressing speed of 100%, and the pressing speed “medium”.
Indicates a pushing speed of 66%, and the pushing speed “low” indicates 33%.
% Pressing speed.

In the present embodiment, the setting of the rotational speed of the casing and the setting of the thrust pushing speed are performed by switches L1, L2, L3, L4, L5 in a two-dimensional matrix arrangement.
M1, M2, M3, M4, M5, H1, H2, H3, H
By pressing one of H4 and H5, both speeds can be set at the same time. The selected part is the
By changing the color or the like, the current setting can be visually confirmed by being distinguished from the others. Visually recognizing the current setting means that not only the operator but also surrounding people can easily understand the setting status, which is also effective in preventing erroneous setting by the operator.

As described with reference to FIG. 1, in hard ground, it is necessary to reduce the excavating torque. Therefore, the thruster pushing speed is suppressed and the rotating speed of the casing is increased to reduce the amount of bite into the cutting edge of the casing. Also, in soft ground, the pushing time of the thruster is increased to shorten the construction time. However, if the rotating speed of the casing is increased more than necessary, the wear of the cutting edge of the casing is promoted.

When excavating using a casing driver, the working efficiency can be improved by adjusting the rotating speed of the casing and the pushing speed of the thruster according to the condition of the ground.

That is, when the ground becomes hard, it is necessary to reduce the bite angle α, and when the ground becomes soft, the bite angle α can be increased.

When the operator operates the casing driver, he or she is conscious of the bite angle α, so that it is easy to find the optimum rotational speed of the casing and the pushing speed of the thruster, and the speed adjustment becomes easy. .

The arbitrary setting button 116 in FIG.
2 is the rotation speed and thrust pushing speed of the casing,
These are buttons for arbitrary setting, and if you need an intermediate setting, by pressing this button,
The screen switches to the auxiliary screen for optional settings. On the optional setting auxiliary screen, two kinds of switches of “increase” and “decrease” are displayed for the rotation speed of the casing and the pushing speed of the thruster, respectively. By operating these switches,
The rotation speed of the casing and the pushing speed of the thruster can be set independently. The operation results of the switches are digitally displayed at 100% full scale on the auxiliary screen for arbitrary setting, so that the operator's operation contents can be confirmed.

Next, the relationship between the state of the ground and the switches to be selected on the speed adjustment auxiliary screen 1160 will be described with reference to FIG. FIG. 6 is an explanatory diagram of a sub-screen of a touch panel in an operation panel used for a casing driver according to an embodiment of the present invention.

As described above, when the ground becomes soft, the bite angle α can be increased. Therefore, as shown in FIG. 6A, the switches M4, M5, H4, and H5 having a large rotation speed at a position where the bite angle α is large and having a large thruster pushing speed are selected.

Next, as shown in FIG. 6 (B), in the case of soft rock or hard soil, the hardness increases compared to the soft soil although the digging angle α is the same as that of the soft soil shown in FIG. Switch M to increase the rotating torque and the pushing force.
3 is selected.

Next, as shown in FIG. 6 (C), in the case of reinforced concrete, not a homogeneous medium but a highly reinforced steel exists in the concrete, so that it is necessary to reduce the bite angle α. The switch L2 is selected so that the rotational torque is further increased and the pushing force is further increased.

Next, as shown in FIG. 6 (D), in the case of a medium hard rock, it is necessary to reduce the bite angle α, but since it is easier to excavate than a rebar, the rotational torque is slightly reduced. Therefore, the switch L3 is selected.

Next, as shown in FIG. 6E, in the case of a boulder, the switches L3 and L4 are selected according to the size of the boulder existing in the soil.

Next, as shown in FIG. 6F, switches L4 and L5 are selected in the case of rocky ground or steel sheet pile.

As described above, when operating the casing driver, it is easy to find the optimum casing rotation speed and thruster pushing speed by considering the bite angle α in accordance with the ground, and the speed adjustment can be performed. It will be easier.

It should be noted that the relationship between the soil properties of each area and the switches to be selected shown in FIGS. 6A to 6F is merely an example.
It is not limited to this.

As described above, according to the present embodiment, the rotational speed of the casing and the thruster pushing speed can be respectively adjusted, and these can be simultaneously adjusted by selecting a two-dimensionally arranged matrix switch. It can be selected and speed adjustment is easy.

By selecting the rotation speed of the casing and the pushing speed of the thruster according to the ground, the work efficiency of the ground excavation by the casing driver is improved.

Next, a casing driver speed adjusting method according to another embodiment of the present invention will be described with reference to FIG. FIG. 7 is a block diagram of an operation unit used for a casing driver according to another embodiment of the present invention.
2 and 3 denote the same parts.

The operation unit 1000A is used by being connected to the power unit 100 shown in FIG. The operation unit 1000A includes operation panels 1100A and C
It comprises a PU 1200A and a mouse 1300. The operation panel 1100A includes a display 1100D for inputting conditions such as a rotation speed and a pushing speed, and various switches 1100S. The configuration of the switch 1100S is the same as that described in FIG. Display 1100D and switch 110
The operation information from 0S is read by the CPU 1200A and transmitted to the CPU 160 of the power unit 100 via the communication cable 200 shown in FIG. The CPU 160 shown in FIG. 2 controls the pumps 120 and 130 and the electromagnetic switching valves 140 and 150 based on the operation information to change the rotation speed of the casing and the pushing speed of the thruster.

A display similar to that described with reference to FIG. 4 is displayed on the display 1100D. Each operation switch unit moves and clicks the cursor displayed on the display 1100D using the mouse 1300. Is selected by By selecting a speed adjustment switch in the operation switch section, a screen for speed adjustment as shown in FIG. 7 is displayed. This screen is
It may be a window display.

On the speed adjustment screen, a two-dimensional screen showing the rotation speed on the horizontal axis and the thruster pressing speed on the vertical axis is displayed. The rotation speed on the horizontal axis increases toward the right side, and the thruster pushing speed on the vertical axis indicates that the pushing speed increases as going downward. In the state shown in the figure, the cursor 1170 is positioned almost at the center of the screen.
Is displayed, but the cursor 1170 can be moved up, down, left, and right on the screen by operating the mouse 1300. Therefore, the operator can use the mouse 1300
To move the cursor 1170 to change the cutting edge bite angle α
By clicking at an appropriate position corresponding to the above, both the setting of the rotational speed of the casing and the setting of the thrust pushing speed can be performed simultaneously. In addition, in the example shown in FIG. 5, the rotational speed of the casing is set in five steps, and the pushing speed is set in three steps. In the present embodiment, each can be adjusted more finely.

As described with reference to FIG. 1, in hard ground, it is necessary to reduce the excavation torque. Therefore, the thruster pushing speed is suppressed, and the rotating speed of the casing is increased to reduce the amount of bite into the cutting edge of the casing. Also, in soft ground, the pushing time of the thruster is increased to shorten the construction time. However, if the rotating speed of the casing is increased more than necessary, the wear of the cutting edge of the casing is promoted.

When the operator operates the casing driver, he or she is conscious of the bite angle α, so that it is easy to find the optimum rotational speed of the casing and the pushing speed of the thruster, and the speed adjustment becomes easy. .

As described above, according to this embodiment, the rotational speed of the casing and the thruster pushing speed can be respectively adjusted, and they can be simultaneously selected by selecting them on a two-dimensionally arranged screen. At the same time, delicate settings can be made, and speed adjustment becomes easy.

By selecting the rotating speed of the casing and the pushing speed of the thruster according to the ground, the working efficiency of the ground excavation by the casing driver is improved.

Next, a method of adjusting the speed of the casing driver according to the third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a block diagram of an operation unit used for a casing driver according to the third embodiment of the present invention. 2 and 3 denote the same parts.

The operation unit 1000B is used by being connected to the power unit 100 shown in FIG. The operation unit 1000B includes an operation panel 1100B and C
PU1200B, mouse 1300 and joystick 14
00 and a joystick controller 1410. The operation panel 1100B is a display 1100 for inputting conditions such as a rotation speed and a pushing speed.
E and various switches 1100S. The configuration of the switch 1100S is the same as that described in FIG. Operation information from the joystick 1400 and the switch 1100S is read by the CPU 1200B and transmitted to the CPU 160 of the power unit 100 via the communication cable 200 shown in FIG. Based on the operation information, the CPU 160 shown in FIG.
By controlling 0, the rotational speed of the casing and the pushing speed of the thruster are varied.

A display similar to that described with reference to FIG. 4 is displayed on the display 1100E. Each operation switch unit moves and clicks the cursor displayed on the display 1100E using the mouse 1300. Is selected by By selecting the speed adjustment switch in the operation switch section, a screen for speed adjustment as shown in FIG. 8 is displayed. This screen is
It may be a window display.

On the speed adjustment screen, the rotation speed is 0 to 100.
%, And the thruster pressing speed is digitally displayed with a numerical value of 0 to 100%. Each speed on this speed adjustment screen is joystick 1400
Can be changed by operating. The joystick controller 1410 includes a potentiometer and an encoder.
Can be read as two-dimensional information. The movement of the joystick 1400 is read by the joystick controller 1410 and the CPU 120
0B. The CPU 1200B displays the operation amount of the joystick 1400 on the display 1100E.

Here, the relationship between the joystick operation and the input speed information will be described with reference to FIG.
FIG. 9 is an explanatory diagram of a joystick in an operation unit used for a casing driver according to the third embodiment of the present invention. FIG. 9A is a plan view of the joystick, FIG. 9B is a right side view of FIG.
(C) is a front view of FIG. 9 (A).

The joystick 1400 is provided with a lever 1400L that can be operated in all directions of 360 degrees. By inclining the lever 1400L right and left, the rotation speed can be set according to the inclination angle θ1. When the inclination angle θ1 is 0, the lever 1400L is at the center position, and at this time, the rotation speed is set to 50%.
When the lever 1400L is tilted leftward and the tilt angle θ1 becomes a negative value, the rotation speed is set to 0 to 0 in accordance with the tilt angle θ1.
Can be set to 50%, tilt to the right, tilt angle θ1
Takes a positive value, the rotation speed can be set to 50 to 100% according to the inclination angle θ1.

Further, by inclining the lever 1400L up and down, the thruster pushing speed can be set according to the inclination angle θ2. When the inclination angle θ2 is 0, the lever 1400L is at the center position, and at this time, the thruster pushing speed is set to 50%. When the lever 1400L is tilted upward and the tilt angle θ2 becomes a negative value, the thruster pushing speed can be set to 0 to 50% in accordance with the tilt angle θ2. When it becomes a positive value, the thruster pushing speed can be set to 50 to 100% according to the inclination angle θ1.

As described above, the lever 1400L is
Since the operation can be performed in all directions of 60 degrees, the operator tilts the lever 1400L by a necessary angle in the direction corresponding to the cutting edge bite angle α, so that the rotating speed of the casing and the thrusting speed of the thruster can be simultaneously substantially continuously. Can be set.

This lever switch can be operated in all directions of 360 degrees, and the rotation speed is set from 0 to 50 to 100% from left to center to right in accordance with the inclination angle. It corresponds to 50 to 100%. The operator can simultaneously and substantially simultaneously set the rotation speed and the pushing speed by tilting the lever by a necessary angle in a direction corresponding to the cutting edge bite angle α. Other effects are the same as those of the first aspect. The advantage of this method is
That is, the space for providing the switch can be reduced.

As described with reference to FIG. 1, in hard ground, it is necessary to reduce the excavation torque. Therefore, the thruster pushing speed is suppressed and the rotating speed of the casing is increased to reduce the amount of bite into the cutting edge of the casing. Also, in soft ground, the pushing time of the thruster is increased to shorten the construction time. However, if the rotating speed of the casing is increased more than necessary, the wear of the cutting edge of the casing is promoted.

When operating the casing driver, the operator can easily find the optimum casing rotation speed and thruster pushing speed by being aware of the bite angle α, which facilitates speed adjustment. .

As described above, according to the present embodiment, the rotational speed of the casing and the thruster pushing speed can be respectively adjusted, and by operating the joystick lever capable of rotating them in the 360 ° direction, At the same time, selection can be made, and delicate settings can be made, so that speed adjustment becomes easy.

By selecting the rotation speed of the casing and the pushing speed of the thruster according to the ground, the work efficiency of the ground excavation by the casing driver is improved.

[0092]

According to the present invention, the speed can be easily adjusted in the casing driver, and the operation is easy.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a principle of excavating a casing driver according to an embodiment of the present invention.

FIG. 2 is a block diagram of a control system of a casing driver according to one embodiment of the present invention.

FIG. 3 is a layout view of switches of an operation panel used for a casing driver according to an embodiment of the present invention.

FIG. 4 is a screen layout diagram of a touch panel in an operation panel used for a casing driver according to an embodiment of the present invention.

FIG. 5 is a layout view of a sub-screen of a touch panel in an operation panel used for a casing driver according to an embodiment of the present invention.

FIG. 6 is an explanatory diagram of a sub-screen of a touch panel in an operation panel used for a casing driver according to an embodiment of the present invention.

FIG. 7 is a block diagram of an operation unit used for a casing driver according to another embodiment of the present invention.

FIG. 8 is a block diagram of an operation unit used for a casing driver according to a third embodiment of the present invention.

FIG. 9 is an explanatory view of a joystick in an operation unit used for a casing driver according to a third embodiment of the present invention, wherein (A) is a plan view of the joystick,
9B is a right side view of FIG. 9A, and FIG.
It is a front view of (A).

[Explanation of symbols]

Reference Signs List 10 casing 12 blade 20A, 20B hydraulic motor 30A, 30B, 30C, 30D thruster cylinder 100 power unit 1000, 1000A, 1000B operating unit 1100, 1100A, 1100B operating panel 1100D, 1100E display 1100S switch 1100T ... Touch panel 1124 ... Speed adjustment switch 1160 ... Speed adjustment auxiliary screen 1200, 1200A, 1200B ... CPU 1300 ... Mouse 1400 ... Joystick L1, L2, L3, L4, L5, M1, M2, M3, M
4, M5, H1, H2, H3, H4, H5 ... Switch

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E21B 44/00 E21B 7/20

Claims (6)

(57) [Claims] 1. A casing driver for rotating a casing and pushing a thruster holding the casing, a control means for variably controlling the rotating speed of the casing and the pushing speed of the thruster, the rotating speed of the casing and the pushing speed of the thruster. Operating means for setting the rotation speed of the casing and the thruster pushing speed as a two-dimensional combination. 2. The casing driver according to claim 1, wherein said speed adjusting means is constituted by a plurality of switches arranged in a two-dimensional matrix, and one side of said two-dimensional matrix is formed by a plurality of stages of said casing. The other side is made to correspond to the thruster pushing speed in a plurality of stages, and the rotational speed of the casing in any one of the one sides and any of the other sides in the other side By the switch located at the intersection with the rotational speed of the casing in the stage,
A casing driver for simultaneously selecting a rotation speed of the casing and a rotation speed of the casing. 3. The casing driver according to claim 2, wherein the plurality of switches are touch switches displayed on a touch panel, and a plurality of switches are displayed on a sub display screen at a time of speed adjustment with respect to a main display screen on the touch panel. A casing driver characterized by being displayed. 4. The casing driver according to claim 1, wherein said speed adjusting means comprises a two-dimensional coordinate plane, and means for designating an arbitrary coordinate on said coordinate plane. A shaft corresponding to the rotation speed of the casing, the other shaft corresponding to the thruster pushing speed, a rotation speed of any of the casings in one of the shafts, and a rotation speed of any of the other shafts in the other shaft. A casing driver for simultaneously selecting a rotation speed of the casing and a rotation speed of the casing by designating coordinates located at an intersection with the rotation speed of the casing by the designation means. 5. The casing driver according to claim 1, wherein the speed adjusting means comprises a lever operable in all directions of 360 degrees, and a tilt angle in a first direction of the operating direction of the lever, Corresponding to the rotation speed of the casing, the inclination angle in the second direction orthogonal to the first direction is associated with the thruster pushing speed, and by operating the lever to an arbitrary inclination angle, A casing driver for simultaneously selecting a rotation speed of the casing and a rotation speed of the casing. 6. The casing driver according to claim 1, wherein said speed adjusting means is selected from a two-dimensional combination having a rotation axis of said casing as a horizontal axis and said thruster pushing speed as a vertical axis. A casing driver, wherein a combined position of a rotation speed and a pushing speed corresponds to a bite angle of a blade fixed to a tip of the casing with respect to a ground.