JP3037591U - Trencher with automatic level control - Google Patents

Abstract

(57) [Abstract] (Corrected) [Problem] To provide a trencher with an automatic level control device that can perform highly accurate excavation work even on soft ground or rough terrain when performing excavation work on a trencher for underdrain drainage work. To do. SOLUTION: A hydraulic cylinder 5 for operating a scale rod 4 is attached to one end that moves up and down integrally with a bucket 16 by the operation of a hydraulic cylinder 15, and a light receiver 3 is movably attached to the scale rod 4. The automatic control device 12 and the lever 10.11 are installed on the driver's cab, and the automatic control device 12 connects the light receiver 3 with the cable 8 to draw the power source from the battery 13, and connects the hydraulic hose 14 with the hydraulic cylinder 15. The hydraulic cylinder 5 and the lever 10 are connected by a hydraulic hose 6. Arm 9, hydraulic cylinder 5,
The staff plate 18, the cleaner shovel 20, and the tillage shaft 17 are fixed.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 This invention relates to a trencher used for underdrain drainage work.

[0002]

[Prior art]

 The current underdrain drainage work is often carried out after field preparation, but it is often carried out under adverse conditions such as soft ground, unevenness or slope. Although it is important to excavate a uniform bottom with an appropriate slope, construction management using conventional trenchers is

The operator runs the excavation while confirming the contact point between the excavation depth indicator rod 19 and the ground surface 21.

After excavating the trench with the trencher, the surveyor confirms the excavation height 23 using the level measuring instrument and instructs the operator.

The light receiver 3 is attached to the trencher, the height of the light emitter 1 or the light receiver 3 is adjusted by a surveyor, and the operator excavates while receiving the laser beam 2.

A method of excavating by attaching a trencher excavating device (JP-A-6-248630) or the like is adopted.

[0007]

[Problems to be solved by the present invention]

 However, in poor field conditions, in order to perform swift and accurate work, either method must rely on highly skilled operators, and the number of surveyors must be increased. There was a flaw. Moreover, the operator's operations became complicated and diversified, and there was a problem in safety.

[0008]

[Means for Solving the Problems]

 The means will be described with reference to the drawings. A hydraulic cylinder 5 having a scale rod 4 attached to an earth-moving cover that moves up and down together with a bucket 16 and a scale plate 18 for confirming the scale of the scale rod 4 are fixed below the hydraulic cylinder 5. Connect the lever 10 installed on the cab and the hydraulic cylinder 5 with the hydraulic hose 6. Then, the light receiver 3 is freely attached to the scale rod 4.

The input / output terminal connector of the light receiver 3 and the automatic control device 12 are connected by the cable 8, the power source is taken from the battery 13, and the automatic control device 12 and the hydraulic cylinder 15 are connected by the hydraulic hose 14.

The automatic control device 12 includes a device that incorporates a device that turns a signal sent from the light receiver 3 into a large current and turns on / off a solenoid valve, a solenoid valve that opens / closes an oil flow, and a hydraulic circuit. It consists of a valve that adjusts the amount of oil that is stored, and a valve that adjusts the speed of the cylinder.

[0011]

[Action]

 Since the present invention is configured as described above, first, the light emitter 1 is installed on the ground, the laser beam 2 is emitted horizontally, and the bucket 16 of the trencher is manually lowered to the target position by operating the lever 11 to lower the scale rod 4. Attach the light receiver 3. Then, the operator automatically switches the operation of the lever 11 to perform excavation traveling.

When the proper level position of the light receiver 3 deviates from the laser beam 2 due to bad conditions of the ground, a signal is output from the sensor, the solenoid valve in the automatic control device 12 opens, and oil is sent to the hydraulic cylinder 15. When the bucket 16 integrated with the arm 9 and the light receiver 3 are activated to receive the laser beam 2 at the proper level position, the electromagnetic valve is closed by the signal from the sensor, the oil stops, and the bucket 16 maintains the target excavation position. Can drill at a uniform height

Then, in order to make a gradient, the operator operates the hydraulic cylinder 5 by operating the lever 10 to lower the light receiver 3 attached to the scale bar 4 to deviate the proper level position from the line and the laser beam 2. The automatic control device 12 described in 0012 operates to enable continuous excavation travel at the excavation height 23 with a uniform slope.

[0014]

【Example】

 The data in Fig. 2 shows that the ground condition satisfies three conditions: flat, uneven, and soft, and the excavation length is 100 m, and an inexperienced operator performed horizontal uniform excavation and uniform excavation with a slope. It is a thing. In the conventional technology, the trencher was switched to manual operation and a remote display for the operator was installed on the cab. (Operating method similar to 0006)

As can be seen from the data in FIG. 2, in the conventional technique, the variation is not seen in the case of flat ground, but the variation becomes larger as the ground condition becomes worse, and increases as the operation of the operator increases. There is. In the technique of the present invention, some variation was observed in the soft ground of the excavated slope. As a result, in the conventional technology, the skilled operator's skill is a necessary condition, whereas in the present invention, since the automatic control device satisfies the condition, even an inexperienced operator can perform a quick and accurate work. I understand that I can do it.

[0016]

[Effect of the invention]

 Performing underdrain drainage work using the trencher of the present invention automates the most important operator's operation and requires the most skilled work, so even inexperienced operators can afford You can carry out certain driving operations and pay close attention to safety.

Highly accurate work is possible and the slope is smooth, so the flow of drainage is smooth and clogging of water distribution pipes can be prevented to a minimum.

Since simple, quick, and accurate work can be performed, labor can be saved and a company can be contributed.

[Brief description of the drawings]

FIG. 1 is a side view of an outline and an embodiment of a trencher of the present invention.

FIG. 2 Example data

[Explanation of symbols]

 1 light emitter 2 laser beam 3 light receiver 4 scale rod 5 hydraulic cylinder 6 hydraulic hose 7 soil cover 8 cable 9 arm 10 lever 11 lever 12 automatic control device 13 battery 14 hydraulic hose 15 hydraulic cylinder 16 bucket 17 working depth shaft 18 standard board 19 Excavation depth indicator rod 20 Cleaner excavator 21 Ground 22 Excavation bottom 23 Excavation height 24 Gradient height

Claims (1)

[Utility model registration claims] 1. A trencher is provided with a device for grading the excavation height at one end of a cab and a device for automatically controlling a photoreceiver to always receive a laser beam at an appropriate level position even under adverse conditions. A trencher with an automatic level control device, which enables continuous excavation running at a smooth and appropriate digging height.