JPH0657746A - Reader posture controller - Google Patents

Abstract

PURPOSE:To automate a reader posture control operation which corrects vertical postures of a reader with the aid of a computer without depending on an operator since an operator may turn over a pile driver by his poor handling. CONSTITUTION:This reader posture control device provides a reader-every- direction inclination sensor 1 and a computer 4 which processes a signal from the sensor 1 where the computer 4 reads every direction of the reader's inclination angle from the reader-every-direction inclination sensor 1 and calculates the expansion direction of stay cylinders (b) on both sides in order to set vertically a reader (a) and transmits signals to change-over valves 7 and 8 which control the stay cylinders (b) on both sides and expands and contracts the both sided cylinders (b). Furthermore, there is installed a main body-every-direction inclination sensor 2. The computer 4 reads each inclination angle from the reader-every-direction inclination sensor 1 and the main body-every-direction inclination sensor 2 and gives an alarm to an alarm device 3 when an operational failure is detected and halts an emergency operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reader attitude control device.

[0002]

2. Description of the Related Art When traveling with a pile driver, the entire pile driver inclines due to the inclination of the ground, which causes a dangerous condition. As a countermeasure against this, an operator conventionally expands and contracts the left and right steering cylinders to correct the reader vertically. However, there was a problem in that the pile driver could fall over due to an incorrect operation.

[0003]

As described above, normally, the operator corrects the inclination of the leader to make it vertical, but since the pile driver may be overturned due to an erroneous operation, the leader may be changed. The purpose is to automate the vertical correction operation using a computer without relying on the operator.

[0004]

There is a front / rear / left / right tilt sensor 1 for a reader and a calculator 4 for processing signals from the sensor 1. The left and right steering cylinders b for reading the inclination angles of the front-back direction and the left-right direction of the angle and vertically setting the reader a by the computer 4.
The expansion / contraction direction is calculated, and the arithmetic unit 4 sends a signal to the switching valves 7 and 8 for controlling the left and right steering cylinders b, and the left and right steering cylinders are controlled.
The cylinder b is made to expand and contract. Further, a body front-rear left-right inclination sensor 2 is provided, and the arithmetic unit 4 reads respective inclination angles from the reader front-rear left-right inclination sensor 1 and the main body front-rear left-right inclination sensor 2 so that an alarm is issued from the alarm device 3 when there is an abnormality. I chose Furthermore, the respective stay lengths are read from the right and left stay length sensors 5 and 6,
When there is an abnormality, the alarm device 3 gives an alarm.

[0005]

Embodiments will be described with reference to the drawings. FIG. 1 is a pile driver according to the present invention, and FIG. 2 is a right side view of FIG. In the figure, a is a reader,
b is a stay cylinder. FIG. 3 shows the configuration of a device according to the present invention. Conventionally, the operator has read the inclination angle of the reader a with a display and manually operated the switching valves 7 and 8 to correct the reader a vertically. The present invention is an automatic improvement of such a manual method.
This will be described in detail with reference to FIG. In the figure, 1 is a front / rear / left / right tilt sensor of the reader, 2 is a front / back / right / left tilt sensor of the main body, and 3 is an alarm device. Reference numeral 4 is an arithmetic unit, 5 is a right-side length sensor, 6 is a left-side length sensor, and 7 and 8 are switching valves for controlling pressure oil to the left and right stay cylinders b. With this configuration, the following operations are performed. The calculator 4 reads the front and rear and left and right tilt angles of the reader tilt angle from the reader front-rear left-right tilt sensor 1, and the left and right steering cylinders for the calculator 4 to vertically set the reader a. Calculate the stretch direction of b. Next, the arithmetic unit 4 outputs a signal to the switching valves 7 and 8, and the left and right stages are
The cylinder b is controlled to expand and contract. The calculator 4 is a reader a
The reader a can be vertically corrected by repeating the above operations until and becomes substantially vertical.

Further, as a safety device, the arithmetic unit 4 reads the respective tilt angles from the front / rear / left / right tilt sensor 1 and the front / rear / right / left tilt sensor 2 of the main body. During the correction of the tilt angle of the leader, the tilt angle of the leader should always change in the correction direction of the computer 4. However, when the reader tilt angle does not change in the correction direction of the arithmetic unit 4, the alarm device 3 issues an alarm and the arithmetic unit control is stopped. Further, when the reader tilt angle is not corrected, the difference between the reader tilt angle and the main body tilt angle is constant both when the vehicle is stopped and when the vehicle is running. However, in the case of an abnormality in which the difference changes by a certain value or more, the alarm device 3 issues an alarm.

Further, the computing unit 4 reads the respective stay lengths from the right and left stay length sensors 5 and 6, and the left and right stay lengths are controlled by the computing unit 4 while the reader tilt angle is being corrected. It should change to match the signal. However, when the left and right stay length does not change depending on the control signal of the arithmetic unit 4, the alarm device 3 issues an alarm and the control of the arithmetic unit 4 is stopped. The left and right stay lengths should be constant when the leader tilt angle is not corrected. However, in the case of an abnormality such as a change of a certain value or more, the alarm device 3 issues an alarm. Alternatively, the arithmetic unit 4 has a function of setting the allowable tilt angles of the reader and the main body, and issuing a warning from the warning device 3 when the respective tilt angles exceed the allowable values.

(Operation Example 1) When the reader a is inclined to the front right (FIG. 4 (a)): 1) Since the reader inclination is at the position shown in FIG. 4 (a) at the start of correction, The left stem cylinder b is contracted until the leader tilt reaches the position. Alternatively, the right stay cylinder may be extended, but care must be taken because the stability becomes worse when the tilt of the leader is at the position 'in FIG. 4 (b). 2) Next, the left and right steering cylinders b are contracted so that the leader inclination is at the position. 3) The above procedures 1) and 2) may be simultaneously operable. When one of 1) and 2) arrives first, only the other side arrives later.

(Example 2 of operation) When the reader is inclined to the rear right (FIG. 5): 1) Since the reader inclination at the start of correction is at the position shown in FIG. The right stay cylinder b is extended until it becomes. 2) Next, extend the left and right stay cylinders so that the leader inclination becomes. 3) The above 1) and 2) may be simultaneously operable. In this case, when one of 1) and 2) arrives first, the other side arrives later.

With the above construction, when the pile driver is run, the pile driver tilts, but when the tilt angle exceeds a permissible value, the warning is issued by the alarm device 3 and the running is stopped. Then, the operator operates this device to correct the leader a vertically, and when the leader a becomes vertical, the traveling is started. It should be noted that the present apparatus can automatically correct the tilt angle of the reader when the reader a is tilted. Further, in the present apparatus, not only during traveling, but also when the reader is inclined, it is possible to correct the reader vertically at any time, such as during pile driving work. Further, with this device, it is possible to correct the tilt angle of the leader even while traveling.

[0011]

[Effect] It has a front / rear left / right tilt sensor 1 and a calculator 4 for processing signals from the sensor 1, and the calculator 4 from the front / rear left / right tilt sensor 1 to the left / right and left / right directions of the reader tilt angle. The inclination angle of the direction is read, and the expansion / contraction direction of the left and right stay cylinders b for vertically setting the leader a is calculated by the computer 4,
A switching valve 7 for controlling the left and right steering cylinders b by the computer 4
Since a signal is sent to 8 and 8 so that the left and right stay cylinders b can be expanded and contracted, there is no need to rely on the operator as in the conventional case, so there is no malfunction and automatic posture control is possible. Further, a body front-rear left-right inclination sensor 2 is provided, and the arithmetic unit 4 reads the respective inclination angles from the reader front-rear left-right inclination sensor 1 and the body front-rear left-right inclination sensor 2, and the right-side length sensor 5 and the left-side length sensor. Since each of the stay lengths is read from the sensor 6 and an alarm is issued from the alarm device 3 when there is an abnormality, the abnormality is immediately transmitted to the operator, so that the occurrence of an accident can be prevented.

[Brief description of drawings]

FIG. 1 is a front view of a pile driver.

FIG. 2 is a right side view of FIG.

FIG. 3 is a block diagram of a device according to the present invention.

FIG. 4 is an explanatory view of control when the reader is inclined to the front right.

FIG. 5 is an explanatory diagram of control when the reader is tilted to the right rear.

[Explanation of symbols]

a Leader b Steady cylinder 1 Leader front-rear left-right inclination sensor 2 Main body front-rear left-right inclination sensor 3 Alarm device 4 Computing machine 5 Right stay length sensor 6 Left stay length sensor 7, 8 Switching valve

Claims (3)

[Claims] 1. A front / rear / left / right tilt sensor (1) for a reader and a computer (4) for processing signals from the sensor (1) are provided. ) Reads the front-back and left-right tilt angles of the reader tilt angle, and the left and right steering cylinders for vertically setting the reader (a) by the computer (4).
The expansion / contraction direction of (b) is calculated, and the arithmetic unit (4) outputs a signal to the switching valves (7 and 8) that control the left and right stay cylinders (b) to expand and contract the left and right stay cylinders (b). The reader attitude control device. 2. A front / rear / left / right tilt sensor (2) is provided, and an arithmetic unit (4) reads the respective tilt angles from the front / rear / right / left tilt sensor (1) and the front / rear / right / left tilt sensor (2) of the main body to detect an abnormality. 2. The reader attitude control device according to claim 1, wherein when there is any, an alarm is issued from the alarm device (3) to stop the dangerous operation. 3. The computer (4) reads the respective stay lengths from the right stay length sensor (5) and the left stay length sensor (6), and if there is an abnormality, an alarm is issued from the alarm device (3). 2. The reader attitude control device according to claim 1, which is designed to prevent a dangerous operation from being generated.