JPH0218084Y2 - - Google Patents

Description

[Detailed description of the invention] This invention aims at exposing the surface, side surfaces, filler layer between slabs, filler layer under slabs, etc. of slabs on slab track by vehicles running on the rails of the track. The present invention relates to a photographing device for photographing a track slab or the like and the condition of a track surface such as a ballast track bed.

Slab tracks are widely used in elevated Shinkansen trains, tunnel tracks, and other areas. Slab track consists of a precast reinforced concrete slab approximately 5m long and 40 to 100mm thick placed on a concrete roadbed.
It is laid through a packed layer of cement asphalt mortar (hereinafter referred to as CA mortar). There are semicircular notches at the front and rear ends of the slab, which are fitted into cylindrical concrete protrusions rigidly connected to the concrete roadbed to close the gap.
It is filled with CA mortar, which transmits the horizontal load. A rail is then fastened onto the slab. In these slab tracks, due to fatigue during service, cracks may occur in the slab body, even partially, or cracks may occur in the filled CA mortar layer, requiring repair. is the current situation. This phenomenon is said to be particularly common in areas where sprinklers are installed in areas with heavy snowfall.

Currently, during maintenance inspections prior to repair work, we inspect track slabs for cracks, exposed reinforcing bars, floating rust, gaps in the filler layer, cracks, or defects through visual inspection and instrument measurements during patrols. There is. Finally, special emphasis is placed on visual inspection of the damaged area. This method requires a large amount of labor and time due to manual visual inspection, and the inspection speed is slow and cannot be increased. In addition, because the inspections are carried out at night or during small breaks in train operation, there are health and safety issues for the measurement personnel, and costs are high, so a more efficient inspection method is needed. There is.

One possible method to meet these demands is to photograph the condition of track slabs, etc. from a vehicle running on the track rails, and then inspect the photographed film or print images from the film. Development of imaging devices such as orbital slabs is being considered.

An existing device of this kind is a road surface photographing device that automatically adjusts the film winding speed of the camera in conjunction with the traveling speed of the vehicle, and then switches the shutter of the camera every certain distance traveled by the vehicle. A device equipped with a pulse camera that opens and closes is known. However, when using this conventional device, the traveling speed and distance are measured by the rotation of the traveling vehicle itself, and the traveling speed and the film winding speed of the camera are synchronized, and at the same time, the traveling distance is measured. Since it is necessary to open and close the shutter of the camera according to the timing, a pulse camera equipped with a special interlocking mechanism must be used.

The purpose of this invention is to eliminate these drawbacks and meet the above-mentioned demands.The present invention uses a film motor drive camera to automatically press the shutter every time the vehicle travels a certain distance. As a result, if you match the shutter speed with the distance to the subject (for example, a slab surface), the aperture will be automatically adjusted according to the brightness of the subject, allowing you to take clear and accurate pictures. To provide an orbital slab photographing device which can be used without requiring a special camera such as a pulse camera, and which does not require synchronizing the film winding speed of the camera and the traveling speed of a vehicle.

That is, the present invention installs a motor-driven camera capable of photographing the track slab, roadbed, etc. on a vehicle that can run on the rails of a track, and also installs a measuring device on the vehicle to measure the distance traveled. The gist of this invention is the structure of a photographing device such as an orbital slab, which is characterized in that the shutter of a motor-driven camera is opened and closed via a signal oscillator that is linked to a signal oscillator.

Next, the present invention will be described according to an illustrated embodiment. FIGS. 1 and 2 show one embodiment of the present invention, and FIG. 3 is a reduced drawing. Figure 1 is a side view of a motor-driven camera installed to photograph the slab surface of the track from the front upper part of the vehicle, and Figure 2 is a side view of the vehicle located on the side of the slab from the side of the vehicle. This shows a front view when a motor-driven camera is installed to photograph the exposed parts of the CA mortar layer. In addition, Figure 1 shows an example in which the contact rail wheels for measuring travel distance are provided separately from the wheels on the vehicle body, and Figure 2 shows an example in which the contact rail wheels for measuring travel distance are replaced by the wheels on the vehicle body. ing. In FIG. 1, reference numeral 1 indicates a vehicle that can run on the rails of a track, and various types of vehicles such as a track motor car can be used. 2 is a support rod,
A seat 3 is provided at the tip to support a camera for photographing a track slab or the like. Also, the base of the support rod 2 is connected to the vehicle 1.
It is supported by and is rotatable. Further, the support rod 2 has a ladder shape and is configured to be extendable and retractable, and is extended and retracted by a hydraulic device 4 or the like. Reference numeral 5 denotes a support column for supporting the support rod 2 as appropriate. Reference numeral 6 is a film motor drive type camera, and it is preferable in terms of handling that the shutter speed and shooting distance can be adjusted as appropriate, and the aperture can be adjusted automatically. The lens of the film motor drive type camera 6 may be selected from a normal type, a wide-angle lens, a fisheye lens, a telephoto lens, etc. depending on the shooting conditions. Generally, it is preferable to use a wide-angle lens. Further, a flash can be connected to the camera 6 and synchronized with the shutter. Reference numeral 7 denotes a contact rail wheel for measurement, which is provided separately from the running wheels of the vehicle 1 and is installed so as not to be affected by external forces such as the load of the vehicle 1. Reference numeral 8 denotes a trip counter, which is provided in contact with the axle of the measuring contact rail wheel 7, and is adapted to measure the travel distance of the vehicle 1 and send a signal to the signal oscillator 9. The signal oscillator 9 is installed in the vehicle 1, and receives and records the traveling distance of the vehicle 1 measured by the rotation speed of the measurement contact rail wheel 7 from the trip counter 8, and also sets it to a constant value. The system is designed to send a signal every time the vehicle has traveled. The signal transmitted from the signal transmitter 9 is adapted to operate the shutter of the film motor drive type camera 6. The shutter is operated via a remote control shutter release or a signal receiver provided on the shutter.

Reference numeral 10 denotes a floodlight, which is installed at a suitable location in the vehicle 1 and illuminates the location to be photographed. 11 is a rail. 12 is the concrete slab of the track, 13 is
CA mortar filled layer, and 14 is concrete roadbed.

Then, the support rod 2 on the vehicle 1 is adjusted to fix the position of the film motor drive type camera 6, and the film motor drive type camera 6 is fixed in position.
When the distance to the track slab surface to be photographed and the shutter speed are set, and the vehicle 1 travels, the measuring rail wheel 7 rotates as the vehicle 1 travels. By the rotation of the measuring rail wheel 7, the travel distance is measured through the trip counter 8, and the signal transmitter 9 is operated. When the signal transmitter 9 is activated and a signal is transmitted every preset travel distance, the shutter of the film motor drive type camera 6 is pressed and the track slab surface is photographed.

Also, if the camera is equipped with a device that can send a signal indicating the travel position to the photographic film at the same time as the shutter is pressed, the record will remain on the film and will be very convenient for data analysis.

In FIG. 2, 1 is a vehicle that can run on the rails of a track. Reference numeral 2 is a support rod, and a receiver 3 is provided at the tip to support a camera for photographing the side surface of the track slab or the packed layer under the slab. In addition, support rod 2
The base is supported by the vehicle 1 and is configured to be extendable, rotatable, and vertically movable. 6 is a film motor drive type camera. Reference numeral 7 indicates a contact rail wheel for measurement, which uses the wheels of the vehicle 1. Although it is desirable to provide a dedicated wheel separate from the wheels of the vehicle 1 as the contact rail wheels for measurement, an example is shown in which the vehicle's own wheels can also be used. 8 is a trip counter. Instead of this trip counter 8, a digital tachometer can also be used for the axle. Reference numeral 9 denotes a signal transmitter, which is installed in the vehicle 1, and receives and records the traveling distance of the vehicle 1 measured by the rotation of the measurement contact rail wheel 7 from the trip counter 8. It is designed to oscillate a signal every set travel distance. The signal transmitted from the signal transmitter 9 is adapted to operate the shutter of the film motor drive type camera 6. Reference numeral 10 denotes a light projector, which is installed on the vehicle 1, the support rod 2, etc., and is used to illuminate the subject. 11 is rail, 1
2 is a concrete slab, 13 is a CA mortar filled layer, and 14 is a concrete roadbed. 15 is a joint sensor whose tip touches the side of the concrete slab so that it can slide.
This joint sensor 15 is adapted to transmit a signal to the signal oscillator 9 every time the concrete slab breaks.

In FIG. 2, the film motor drive type camera 6 can be installed on both sides of the vehicle 1 or only on one side. Furthermore, two or three cameras can be installed on both sides of the vehicle 1.

In FIG. 2, when the vehicle 1 travels, the wheels of the vehicle 1 that also serve as measuring rail wheels 7 rotate. Then, the trip distance is measured by the triple counter 8 and transmitted to the signal oscillator 9. The signal transmitter 9 receives and records the distance traveled from the triple counter 8, and also transmits a signal every fixed distance traveled. This signal causes the shutter of the film motor drive type camera 6 to be pressed to photograph the subject. In particular, when it is necessary to photograph only the joint portions of concrete slabs, a signal separately obtained from the joint sensor 15 may be used in combination. The projector 10 is used to illuminate the subject, but if a strobe flasher is further connected to the film motor drive type camera 6, it is also possible to take pictures while illuminating the subject with the flash.

It is also possible to combine the embodiments of FIG. 1 and FIG. 2 to provide both functions in one vehicle. That is,
A photography method that allows a single vehicle to photograph the surface of the track slab from above, and a photography method that allows the side of the track slab and the exposed portion of the CA mortar filling layer to be photographed from the side or diagonally from above (one side and both sides). This is what was installed. In this case, the signal oscillator 9 is
The distance traveled is recorded by a measuring rail wheel 7 (preferably provided separately from the wheels of the vehicle 1) and a triple counter 8, and a film motor-driven camera 6 is installed above the vehicle 1 for each set distance. Then, a signal suitable for each camera is transmitted to the film motor drive type camera 6 on the side, and the shutter of the camera is pressed to photograph the subject.

According to the present invention, there is no need for a special camera such as a pulse camera, and there is no need to synchronize the film winding speed of the camera with the running speed of the vehicle, so the mechanism is extremely simple and accurate photography is possible. It has the practical benefit of making it possible.

Furthermore, according to the present invention, since the vehicle is provided with a measuring rail wheel for measuring the distance traveled, it is possible to accurately measure the distance traveled by the vehicle without being affected by the load of the vehicle. By activating the signal transmitter and operating the camera shutter in accordance with the measured travel distance, it is possible to photograph the track slab surface etc. continuously or at regular intervals of travel distance. It has practical benefits.

Furthermore, according to the present invention, it is possible to take pictures both during the day and at night, and the work efficiency is extremely high.

Furthermore, by appropriately moving the support rod back and forth, left and right, up and down, etc., it becomes possible to photograph not only the front of the vehicle, but also the surfaces of the roadbed, roadbed, etc. at the rear, left and right sides of the vehicle.

Surveys using the imaging device of the present invention have the following advantages over conventional survey methods using visual exploration.

(b) Investigations can be conducted several hundred times faster than visual reconnaissance.

(b) Measurable regardless of day or night.

(c) The current degree of damage can be seen in the photo.

(d) The degree of damage can be classified by rank.

(E) Early detection of damaged parts is possible.

(F) It is possible to shorten the period of periodic maintenance and inspection and improve the safety of high-speed railways.

(g) It is possible to ensure the personal safety of the measurers (travelers up until now).

(h) Early repairs can be made and the life of the slab track can be extended.

Furthermore (b) Confirmation of deterioration status of slab and filler material.

(b) Aging changes in slabs and fillers.

(c) Check the normal operation of sprinklers.

etc. are also possible.

Here, we have mainly talked about the maintenance of slab tracks on Shinkansen trains, but by replacing visual inspections on general tracks, including conventional lines, with this method, the safety of vehicular traffic can be ensured accurately and quickly. I can do things.

Below, the following effects can be obtained including slab orbit and general orbit.

Pushing road strips into the ballast (mud blowing state)
discovery.

Found a cracked spot on the rail.

Discovered areas where the rails were floating due to frost pillars, etc.

Expansion and contraction of the rail due to temperature differences in summer.

Discovery of defects in the installation structure and defective parts of the facility (abnormalities in dog nails, railroad ties, etc.).

Detection of abnormalities found in other visual inspection items.

Inspections after disasters such as earthquakes and floods.

Discovery of frozen icicle length inside the tunnel.

[Brief explanation of drawings]

The figures show an embodiment of the present invention. Fig. 1 is a surface survey of an embodiment of a device for photographing a track slab from above, and Fig. 2 shows a side view of the track slab, the exposed part of the CA mortar filling layer, etc. FIG. 3 is a front view of an embodiment of an apparatus for photographing from a camera. The symbols in the figure are explained as follows. 1
is a vehicle capable of running on a track, 2 is a support rod, 3 is a catch, 4 is a hydraulic system, 5 is a support, 6 is a film motor drive type camera, 7 is a contact rail wheel for measurement,
8 is a trip counter, 9 is a signal oscillator, 10
is a floodlight, 11 is a track rail, 12 is a concrete slab, 13 is a CA mortar filling layer, 14
is a concrete roadbed, and 15 is a joint sensor.

Claims (1)

[Scope of utility model registration request] A motor-driven camera that can take pictures of the track slab, roadbed, etc. is installed on a vehicle that can run on the rails of a track, and a measuring device that measures travel distance is installed on the vehicle, and a signal oscillator that works in conjunction with the measuring device. A photographing device for orbital slabs, etc., characterized in that the shutter of a motor-driven camera is opened and closed through the shutter.