JP2001018792A - Muck car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a muck car which can assure and maintain a good muck discharging efficiency without allowing excavated soil loaded thereon to drop even in a tunnel with a relatively steep grade. SOLUTION: This muck car 10 includes: a gradient sensing part 15, e.g. an inclination sensor, mounted near the end of an undercarriage part 13 in an opposite relation to a track R on which the muck car 10 travels, for detecting the gradient of the track R; a controller part 16 receiving information about the gradient of the track R from the gradient sensing part 15 via a communication line 15a and sending an attitude control command so that a car part 14 is always horizontal correspondingly to the gradient angle of the track R; and an attitude control means 17 such as a hydraulic cylinder which expands or contracts on receiving the attitude control command transmitted from the controller part 16 that shows, e.g. the amount of expansion or contraction of a cylinder, so as to adjust the vertical interval between the undercarriage part 13 and the car part 14 as necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scrap steel vehicle for transporting and discharging excavated soil generated during tunnel construction or the like.

[0002]

2. Description of the Related Art In tunnel construction, not only ordinary mountain tunnel construction, but also urban underground construction such as subway, underpass, or communal ditches construction which is carried out in association with urban redevelopment projects, etc. In recent years, it has become increasingly necessary to always proceed with construction with great care so as not to cause various damages and deformations to such structures, always in mind. This reflects the overcrowded land use situation in urban areas, and when tunnel construction is performed under these difficult construction conditions, buildings such as buildings that are lined up with no gaps and multiple layers of electricity The construction is required to avoid damage by avoiding lifelines such as gas pipes and gas pipes, and that the period for restricting or blocking ground traffic is short.

[0003] In order to meet the above-mentioned demands, shield construction is generally performed, and even for such construction, long-distance short-term construction and steep slope (for example, 5% to
(About 20%) and sharp curve excavation are desired. In general, the method of discharging excavated soil performed by the shield machine includes, for example, a muddy water transport method in which mudified excavated soil is discharged backward by a pump, and a continuous conveyor method in which excavated soil is continuously conveyed by a conveyor. Or a scrap steel car system, of which a steep slope countermeasure has been conventionally devised and implemented for the muddy water transportation system and the continuous conveyor system.
However, special measures are rarely taken for steep excavation for slip steel cars, which should be the mainstream in terms of excavation discharge, and at best, the slip steel cars are inclined according to the inclination of the track, that is, the tunnel slope In anticipation of the amount of excavated earthfall caused by such a situation, only measures were taken to raise and load in advance when loading excavated earth.

[0004]

However, the conventional scrap steel wheel has the following problems. That is, in the conventional measures such as raising the load in anticipation of the amount of excavated excavated soil, for example, when the slope of the tunnel becomes about 5% or more, the level is slightly increased depending on the soil quality of the excavated earth loaded on the scrap steel vehicle. By the way, there is a possibility that a larger amount of loaded earth will fall and the original excavated earth discharging service may not be completely fulfilled.

[0005] On the other hand, it is conceivable to carry the excavated dumping load on the scrap steel vehicle with a greatly reduced load from the beginning in order to prevent the loaded dumping from dropping. That is, the discharge efficiency of the excavated excavated soil may be significantly reduced, and the excavation efficiency itself may be reduced, and it is sufficiently considered that the construction period and the construction cost of the entire excavation are significantly deteriorated.

Accordingly, the present invention has been made in view of such a conventional problem, and does not cause the loaded excavated soil to fall even in a tunnel having a relatively slope, and has a good soil removal efficiency. The purpose of the present invention is to provide a scrap steel vehicle capable of securing and maintaining the same.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and comprises a chassis having a traveling function, and a steel car mounted and fixed on the chassis to accommodate excavated soil. A slope sensing unit for detecting a slope of a track on which the slipping steel vehicle travels, and a track corresponding to the track slope information by obtaining track slope information from the slope sensing unit. A control controller for issuing a control command, and posture control for expanding and contracting in response to a posture control command from the control controller to appropriately adjust the vertical distance between the chassis portion and the steel wheel portion to maintain the steel wheel portion horizontal. Means.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a shear steel wheel 10 of the present invention, wherein (a) is a front view and (b).
Is a side view.

The scrap steel wheel 10 shown in FIG. 1 is used for transporting and excavating excavated earth (hereinafter referred to as “slipping”) generally generated during tunnel construction to the rear of a tunnel excavation surface. Track R laid on
The vehicle travels on an iron wheel 12 supported by an axle 11. Normally, it is not possible to drive by itself with a drive device, and an underground locomotive is arranged at the head of the shear steel car 10 connected by a plurality of automatic couplers J and is towed on the track R and travels. I have. A scrap steel wheel 10 is mounted and fixed on the axle 11 and a chassis 13 mainly including a traveling system such as an iron wheel 12 supported by the axle 11, and
For example, it mainly comprises a steel wheel portion 14 that actually accommodates and transports the waste W loaded by a waste loading device or the like (not shown).

Although not particularly shown, the steel wheel portion 14 is classified into a fixed type, a falling side open type, and a bottom open type and a slide type, depending on the difference in the shear release method. In the formula, the whole is always fixed on the undercarriage portion 13, and a heavy machine such as a club is used from the opening on the upper surface of the steel wheel portion 14 at the time of releasing the slip, or almost the entire bottom surface of the steel wheel portion 14 is divided and opened. And a mechanism for transferring the steel wheel section 14 to the secondary transport device or the like below the trajectory R. The steel wheel section 14 is swingably attached to the undercarriage section 13 via the swing mechanism when the tipping side is open. In the case of the release of the slip W, the steel wheel portion 14 swings and tilts, and the side wall portion is opened to discharge the slip W downward to the side of the slip steel wheel 10.

[0013] In addition to the above-described configuration, the slip steel wheel 10 of the present invention is mounted near the end of the undercarriage portion 13 in opposition to the track R on which the slip steel wheel 10 travels, and detects the gradient of the track R. For example, a gradient sensor 15 such as a tilt sensor, and the gradient information of the trajectory R from the gradient sensor 15 are received via the communication line 15a, and the steel wheel unit 14 is always horizontal according to the gradient angle of the trajectory R. A control controller unit 16 for issuing such a posture control command, and
For example, there is provided a posture control means 17 such as a hydraulic cylinder or the like, which expands and contracts in response to a posture control command indicating the amount of expansion and contraction of the cylinder, and appropriately adjusts the vertical distance between the chassis 13 and the steel wheel 14.

Here, an inclination sensor is shown as the inclination sensing unit 15. However, the present invention is not limited to this. For example, a limit switch that activates a switch when the inclination of the track R increases to a certain level can be used. It can be appropriately selected and used according to various construction conditions. In addition, although a hydraulic cylinder is shown as the posture control means 17, various expansion and contraction mechanisms such as an air cylinder and an airbag can be used.

FIG. 2A is an explanatory view showing a state in which a conventional steel strip 20 travels on a steep trajectory R, and FIG. 2B is a view showing the conventional steel strip 10 running on a steep trajectory R. It is explanatory drawing which shows a mode that it does. In the figure (a), the same reference numerals as those shown in FIG. The following is a scrap steel car 1
The situation where 0 and 20 actually operate in the tunnel will be described respectively. In the figure, (a) shows a conventional situation in which a so-called lifting action is taken to transport the waste W, and the shield excavator M located on the left side of the drawing.
In the excavator M, the shear W transported to the rear end of the excavator M by the conveyor device C in the excavator M is loaded as it is on the steel scraper 20 as it is. When the conventional steel wagon 20 loaded with the waste W is pulled by the underground locomotive L and approaches a steep section in the tunnel pit, a part of the loaded waste W is dropped as a falling waste D as shown in the figure. Would.

On the other hand, FIG. 2B shows a situation in which the scrap W is transported using the scrap steel wheel 10 of the present invention, and the conveyor device C according to the present invention loaded with an appropriate amount of the slip W. When the steel wheel 10 approaches a steep slope section, a gradient sensing unit 15 such as an inclination sensor provided near the end of the leading steel wheel 10 detects the degree of the gradient and is stored in the chassis 13. The state in which the attitude control means 17 is appropriately operated through the control controller section 16 to lift the steel wheel section 14 upward and maintain the horizontal state is shown. Of course, the gradient sensing unit 15 does not need to be provided for each of the connected steel strip cars 10; for example, the minimum and only the first and last cars are provided, and the other steel strip cars 10 are the first or last. It is sufficient to provide a mechanism that follows the leveling operation of the tail vehicle.

As means for controlling the attitude control means 17 based on the gradient information from the gradient sensing section 15, for example,
A system in which the gradient information at the time of traveling, which changes in real time, and the amount of expansion and contraction of the attitude control means 17 are constantly compared with each other to perform immediate feedback control, and the gradient information of the trajectory R measured in advance at a predetermined point and the gradient sensing unit 15 A non-continuous system that compares the obtained gradient information at the time of traveling and if the values substantially match each other, gradually expands and contracts the attitude control means 17 to a telescopic position set in advance in a stepwise manner corresponding to each gradient angle. You could think so.

In an operating environment in which the speed of tunnel excavation is high, the underground environment changes remarkably quickly, and the gradient of the track changes rapidly, the former immediate feedback system is preferable in view of its flexibility. In a relatively stable operating environment in which the orbit gradient changes are not so severe, the latter discontinuous system is preferable from the viewpoint of economy and operational efficiency.

[0017]

As described in detail above, the scrap steel wheel according to the present invention comprises a chassis part having a traveling function and a steel wheel part mounted and fixed on the chassis part and accommodating excavated soil. In the main slip steel vehicle, a gradient sensing unit that detects the gradient of the track on which the slip steel vehicle travels, and obtains orbital gradient information from the gradient sensing unit, and issues a posture control command corresponding to the orbital gradient information. And a posture control unit that expands and contracts in response to a posture control command from the control controller unit, and appropriately adjusts a vertical distance between the chassis portion and the steel wheel portion to maintain the steel wheel portion horizontal. It is characterized by having.

Therefore, since the steel wheel loaded with the excavated earth is always kept horizontal regardless of the tunnel gradient, the steel wheel is loaded regardless of the soil property such as the viscosity of the earth loaded. Even if the slope of the tunnel is as steep as about 5% or more, the original excavated earth discharging service can be completely performed. As a result, the number of times of operation of the scrap steel car can be greatly reduced, the discharge efficiency of excavation and excavation is greatly improved, and the excavation efficiency of the tunnel itself is also improved, leading to a reduction in the construction period and construction cost. It works.

[Brief description of the drawings]

FIG. 1 shows a scrap steel wheel of the present invention, wherein (a) is a front view,
(B) is a side view.

FIG. 2 (a) is an explanatory view showing a state in which a conventional steel strip car travels on a steep trajectory, and FIG. 2 (b) is an explanatory view showing a state in which the conventional steel strip car travels on a steep trajectory. It is.

[Explanation of symbols]

 R track 10 Slip steel car 13 Undercarriage section 14 Steel car section 15 Slope sensing section 15a Communication line 16 Control controller section 17 Attitude control means

Claims (1)

[Claims] 1. A track on which a slip steel vehicle travels in a steel wheel mainly composed of a chassis having a traveling function and a steel wheel mounted and fixed on the chassis to accommodate excavated soil. A gradient sensing unit that detects the gradient of the vehicle, a controller controller that obtains orbital gradient information from the gradient sensing unit, and issues a posture control command corresponding to the orbital gradient information, and a posture control command from the control controller unit. A slip-on steel vehicle comprising: posture control means for receiving and expanding and contracting to adjust the vertical interval between the undercarriage portion and the steel wheel portion so as to maintain the steel wheel portion horizontal.