Device for determining the position of the tunneling shield

 

Device for determining the position of the tunneling shield relative to project the axis of the tunnel along the light beam of a laser pointer is used for manual and automatic control of the spatial position of the tunneling machine in the construction of tunnels. The device comprises a collecting lens, a photo sensor, modulator sensor zero position, the modulator is designed as two opaque plates arranged at an angle to each other. The performance of the modulator can improve the measurement accuracy and to increase the measurement range angular coordinates. The device is equipped with two pendulum sensors deviations relative to the vertical, and a work measurement tool position pendulums are opaque plate modulator. 2 C.p. f-crystals, 3 ill.

The invention relates to the mining industry, namely, devices for determining the position of the tunneling shield relative to project the axis of the tunnel along the light beam of a laser pointer, and can be used for manual and automatic control of the tunnel shield.

A device orientation tunneling shield used in systems the mechanisms and ensure the passage of the light beam from the laser to the photodetector, rigidly mounted on the tunneling shield, with the light beam parallel project to the axis of the tunnel, the photodetector, the recording linear and angular deviations of the tunneling machine in plan and profile, inclinometer, the registration roll and pitch of the tunneling shield computing unit that produces the calculation of the variance of the tunnel shield depending on the readings of a sensor and inclinometer.

A disadvantage of the known device is that it contains as a separate component units unit inclinometer.

A device for determining the linear and angular position of the tunneling machine relative to project the axis of the tunnel defined by a light beam of a laser pointer, containing the collective lens, the photosensor modulator with a drive of rotation located between the collecting lens and the photosensor (A. C. the USSR 2122097 And class. E 21 35/24 from 25.07.1984 year).

The disadvantage of this device is the low accuracy of the measurement, a small range of measuring angular deviations, the impossibility of measuring roll tunneling shield.

The objective of the invention is to increase the measurement accuracy, increased range of measuring angular deviations, as well as expanding the functionality of the device is it about the design of the axis of the tunnel along the light beam of a laser pointer, containing a collecting lens, a photosensor mounted on the axis of the collecting lens, the modulator with a drive of rotation located between the collecting lens and the photosensor has a sensor zero position, the modulator is designed as two opaque plates, and the arrangement of the modulator and the light blocking plate such that each of the plates, one turn of the modulator crosses the light beam twice. The device further comprises a pendulum with optocoupler and the pendulum axis parallel to the optical axis of the collecting lens and the target optocoupler crossed the plate of the modulator during their rotation. The device also contains a second pendulum, similar to the first rotated relatively around the axis of rotation of the modulator 90o.

Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources, has allowed to establish that the applicant is not detected similar, characterized by signs, identical to all the essential features of the claimed invention, therefore, the claimed invention meets the criterion of "novelty" in the existing legislation.

In Fig. 1 shows a device for prevlen view of the device in the plan.

In Fig. 3 shows a scan of a cylindrical surface.

The device comprises a collecting lens 1, the photosensor 2, a modulator 3 c drive rotation 4 of the modulator, the sensor 5 zero position of the modulator. The device includes a pendulum 6 optocoupler 7 mounted on an axis parallel to the optical axis of the collecting lens 1, and an additional pendulum 8 optocoupler 9, fixed on the axis perpendicular to the optical axis of the collecting lens 1.

In Fig. 2 shows a possible position of the light beam 10, private accommodation opaque plates 11 on the cylindrical surface, the front 12 and rear 13 zone coordinate measuring light beam 10.

In Fig. 3 shows a scan of a cylindrical surface, where light blocking plate 11, zones 12 and 13 measurement of coordinates and the intersection of these zones light beam 10.

The surface of the collecting lens 1 is an active area of the linear measurement of the deviations of the device. The photo sensor 2 includes a photosensitive surface that generates an electrical signal when incident to the light beam 10. The dimensions of this surface correspond to the range of measured angular deviations of the laser beam in plan and profile attributes is different from the axis of rotation of the modulator 3 by an amount providing double crossing each plate light beam 10. At least one of the edges of each plate 11 non-parallel, at least one edge of the second plate 11.

The width of the plate 11 must provide overlapping crossed them the light beam 10 to the extent that allows the photosensor 3 to register this intersection, in the optical option to completely block the light beam. The actuator 4 rotation provides uniform rotation of the modulator 3. The axis of rotation of the modulator is perpendicular to and intersects the optical axis of the collecting lens. The sensor 5 zero position of the modulator 3 may be an optical coupler, the beam which intersects the box, installed on the modulator 3 as it rotates. The pendulum 6 swinging on an axis parallel to the optical axis of the collecting lens 1, and is equipped with an optical coupler 7, the beam which intersects the plate 11 during the rotation of the modulator 3. The pendulum 6 is located outside the zone of passage of the light beam 10. Additional pendulum 8 optocoupler 9 is similar to the pendulum 6 with the difference that its axis perpendicular to the optical axis of the collecting lens 1.

The light beam 10 is oriented in space parallel project to the axis of the tunnel and separated from her at a distance, Oprah is installed on the tunneling shield, moreover, the optical axis of the collecting lens 1 parallel to the longitudinal axis of the shield.

The invention consists in the following.

The sequence of pulses generated in the cycle of the modulator 3, is provided by the overlap of the light beam opaque plates 11. The angle occupied by the plates 11 to the modulator 3 can be compared with the prototype is considerably increased, because the scan modulator no zone of complete overlap area measure before scanning their light-transmitting slits. Increasing the angle occupied by the plates 11, allows to increase the angle between the plates. Increase of the latter leads to higher precision measurement of angular and linear deviations in the profile.

At the same time increases the available area for measuring the angular deviation of the light beam 10 with respect to the optical axis of the collecting lens 1, which corresponds to an increase in the measurement range of angular deviations of the tunneling machine.

Under item 2 of the invention the modulator 3 of the device is a measuring tool roll tunneling shield, because points of intersection of the plates 11 beam optocoupler 7 pendulum 6 uniquely define the roll of the tunnel shield poditsa by the sum of the angles of deviation of the light beam 10 relative to the horizontal surface in the profile and device-specific angular deviations of the tunneling machine is relatively light beam 10.

Under item 3 of the invention the modulator 3 of the device is also a measuring tool inclination angle of the pendulum 8, a signal which is an adjustment when measuring roll tunneling machine without using the deflection of a light beam 10 relative to horizontal.

The device operates as follows.

The light beam 10 impinges on the collecting lens 1, is deflected and focused onto the focal plane of the lens. Getting on the photosensor 2, the light beam forms an electric signal. During the rotation of the modulator 3, each of the light blocking plate 11 is crossed by the light beam 10 twice per rotation of the rotation of the modulator 3. The trajectory rejected collecting lens 1 of the light beam 10 in the coordinate system of the device in question uniquely identifies the deflection unit with respect Needlenose collecting lens 1 of the light beam 10. The coordinates of the beam in the plane of the lens correspond to linear deviations of the device, the coordinates of the beam in the focal plane of the collecting lens 1 is uniquely correspond to angular deviations of the device in plan and profile relative to Needlenose beam 10.

Thus, if you define the coordinates rejected her light lens 1 and the focal plane of this lens, get the required coordinates.

This design of the device for determining the position of the tunneling shield relative to project the axis of the tunnel along the light beam of a laser pointer improves the precision motion control of tunnel shield in the construction of the tunnel, to improve the quality of constructed tunnels.

Claims

1. Device for determining the position of the tunneling shield relative to project the axis of the tunnel along the light beam of a laser pointer, containing the collecting lens, the photosensor mounted on the axis of the collecting lens, the modulator with a drive of rotation located between the collecting lens and the photosensor has a sensor zero position, characterized in that the modulator is designed as two opaque plates, and the arrangement of the modulator and the light blocking plate such that each of the plates, one turn of the modulator crosses the light beam twice.

2. The device under item 1, characterized in that it further comprises a pendulum with optocoupler and the pendulum axis parallel to the optical axis of the collecting lens, the target optocoupler crossed the plate of the modulator when the rotation is relatively around the axis of rotation of the modulator 90o.

 

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