JPH049537Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a device that automatically corrects tilt errors of surveying instruments such as theodolites, autolevels, automatic vertical sights, two-dimensional levels, etc., and warns of the correction limit. The present invention relates to a warning device for making notifications.

Conventional technology In general, in surveying equipment, the collimated optical path of the telescope changes due to installation errors of the equipment or tilt of the vertical axis due to machine fluctuations during surveying, which causes surveying errors. A correction device is provided which automatically corrects variations in the line of sight by providing a correction reflecting surface attached to a suspension member pivotally mounted in the telescope optical system.
There is a certain limit to the amount of deflection of the suspension member that can be corrected, and it becomes impossible to correct a tilt error that causes a deflection exceeding this limit.

Therefore, as described in Japanese Utility Model Application Publication No. 60-27311, the applicant first suspended a correction reflecting member using a suspension member whose top part was pivotably pivoted to the fuselage, and suspended it according to the inclination of the fuselage. In a device that automatically corrects inclination errors of a surveying machine by reflecting a surveying light beam between it and a fixed reflecting member fixedly provided on the body of the machine below, the lower part of the suspension member is rotated. A downward extension of the suspension member is provided below the correction reflection member, bypassing the fixed reflection member, and a shielding plate is provided in a direction parallel to the swinging direction of the downward extension of the suspension member. On the other hand, a light emitting element and a light receiving element are provided facing each other with a swinging region of the shielding plate interposed therebetween, so that when the suspension member shakes beyond the correction limit, the light flux from the light emitting element is We have proposed a warning device for an automatic tilt error correction device for a surveying machine, which is constructed so that when the light receiving element receives or blocks light when the light shielding plate blocks light, an electric signal is generated and a warning notification means is activated.

Problems to be Solved by the Invention By the way, the light-shielding plate in this conventional warning device is rectangular and is fixedly installed on the suspension member, so when incorporating the correction device, slight changes in the dimensions and shape of the light-shielding plate and the fixing position are required. Due to errors or errors in the luminous flux width, light emitting direction, mounting position, etc. of the light emitting element, there will be variations in warning notifications for vibrations that exceed the fixed correction limit of the suspension member, and it is necessary for all warning devices to issue accurate warning notifications. There was an issue that made it difficult to achieve a uniform finish.

Means for Solving the Problems Therefore, in order to solve the above-mentioned conventional problems, this invention suspends a correction reflecting member 4 by means of a suspension member 1 whose top part is pivotably pivoted to the fuselage, and adjusts the angle of the tilt of the fuselage. In a device that automatically corrects tilt errors of a surveying machine by reflecting a surveying light beam between it and a fixed reflecting member 15 fixedly provided on a body below the suspension member by swinging the suspension member according to the A downward extension of the suspension member 1 is provided below the correction reflection member 4 located below the correction reflection member 4 in the middle, bypassing the fixed reflection member 15, and a downward extension of the suspension member 1 is provided in a direction in which the suspension member 1 swings. A shielding plate 5 is provided in a direction parallel to the shielding plate 5, and a light emitting element 6 and a light receiving element 7 are provided facing each other with the swinging region of the shielding plate 5 interposed therebetween. When the light beam from the light emitting element 6 is blocked by the light shielding plate 5, the light receiving element 7 receives or blocks the light, thereby emitting an electric signal and activating a warning notification means. In the conventional warning device in the automatic tilt error correction device, a light shielding plate 5 whose light shielding area is gradually increased or decreased by a positioning adjustment means on the downward extension of the suspension member 1.
The light shielding plate 5 blocks the light beam from the light emitting element 6, and the light receiving element 7 generates an electric signal to activate the warning notification means.The swing angle position of the suspension member 1 can be freely adjusted. An object of the present invention is to provide a warning device for an automatic tilt error correction device for a surveying machine, which is characterized by the following.

According to the above warning device in the automatic tilt error correction device for a surveying machine according to the present invention, by positioning and adjusting the light shielding plate 5 provided in the downward extension of the suspension member 1, the suspension member 1 is prevented from swinging. When this occurs, the light-shielding area of the light-shielding plate 5 that blocks the light beam from the light-emitting element 6 corresponding to the deflection angle can be gradually increased or decreased. The deflection angle of the suspension member 1 can be set small, and conversely, as the light shielding area of the light shielding plate 5 is increased, the deflection angle of the suspension member 1 can be set to be larger. The light-shielding area of the light-shielding plate 5 is gradually increased or decreased to adjust the position, and the light-receiving element 7 receives or blocks light to accurately emit an electric signal when the vibration exceeds a predetermined correction limit of the suspension member. There is an effect that the mounting position of the light shielding plate 5 can be determined so that the warning notification means is activated.

Embodiment Below, we will explain the embodiment of this invention shown in the drawings. Fig. 1 shows an example implemented in an automatic tilt error correction device in an auto level. It is pivoted to the rotating shaft 3 so as to be able to swing from side to side.
A correction reflecting member 4 such as a prism is attached to the intermediate portion thereof, and a shielding plate 5 is provided at a downwardly extending portion further below the fixed reflecting member 15 below.

A light-emitting element 6 and a light-receiving element 7 for receiving the light beam are installed on the aircraft body in a direction orthogonal to the swinging direction of the suspension member 1, facing each other with a shielding plate 5 interposed therebetween.
When installing the light-emitting element 6 and the light-receiving element 7, it is possible to combine them individually and arrange them facing each other, but if you use a photointerrupter 8 in which they are combined in advance as shown in the figure, It can be installed easily and compactly.

In the illustrated embodiment, the light beam emitted from the light emitting element 6 is blocked by the shielding plate 5 and is not received by the light receiving element 7 until the suspension member 1 exceeds the correction limit point. The element 7 is installed facing the center of the shielding plate 5 when the fuselage is correctly installed in a horizontal position. The setting is such that the light beam from the light emitting element 6 is received by the light receiving element 7 when the correction reflecting member 4 suspended from the suspension member 1 exceeds the correction limit point.

For example, an electric circuit shown in FIG. 4 is connected to the light-emitting element 6 and the light-receiving element 7, and when the light-receiving element 7 receives the luminous flux of the light-emitting element 6, this circuit is energized to light up the warning indicator light 9 and , is configured to sound a warning device 10 such as a buzzer.

Note that when the suspension member 1 for suspending the light emitting element 6 and the light receiving element 7 shakes beyond the correction limit point, the shielding plate 5
It may be configured such that when the light emitting element 6 and the light receiving element 7 are shielded by the shielding plate 5, the indicator lamp 9 and the alarm 10 are energized and activated.

A fixed reflection member 15 such as a prism fixed to the aircraft body is provided below the correction reflection member 4, and the incident light beam that is incident on the objective lens 16 and reflected by the front reflective surface of the correction reflection member 4 is reflected to the correction reflection member 4. The light flux lens 17 is configured to emit light onto the rear reflective surface and correct the tilt error, and the light flux reflected by the rear reflective surface is
An image is formed on a focusing plate 18 through the lens, and this image is visually recognized through an eyepiece lens 19.

In the above configuration, as shown in Figure 3,
When the aircraft tilts and the correction reflection member 4 suspended from the suspension member 1 causes a deflection exceeding the correction limit point, the downward extension of the suspension member 1 located further below the fixed reflection member 15 below the correction reflection member 4 The shielding plate 5 provided at the front side swings much more than the corrective reflecting member 4, and the light beam from the light emitting element 6, which was previously blocked by the shielding plate 5, is greatly and reliably released and is received by the light receiving element 7. As a result, the indicator light 9 lights up accurately, and the alarm device 10 emits an alarm sound to automatically notify the operator.

Here, the warning device in the automatic tilt error correction device for a surveying machine according to the present invention is provided with a light shielding plate 5 that gradually increases or decreases the light shielding area by a positioning adjustment means on the downward extension part of the suspension member 1, and the light emitting element The light shielding plate 5 blocks the light beam from the light receiving element 7, and the light receiving element 7 generates an electric signal to activate the warning notification means. be.

In the light-shielding plate 5 according to the present invention shown in FIG. 5, when the suspension member 1 shakes beyond the correction limit, the light-receiving element 7 receives the light beam from the light-emitting element 6, and the above-mentioned warning notification means is activated. A tapered wedge-shaped portion 11 is provided so that the light shielding area gradually decreases from the upper end to the lower end.
In the case of the embodiment, as a means for positioning and adjusting the light shielding plate 5 according to the present invention, a long hole 1 is provided at the upper end of the light shielding plate 5 along the hanging direction of the downwardly extending portion of the suspension member 1.
2 is provided, and a fixing screw 1 passed through the elongated hole 12
3, the downward extension of the suspension member 1 is slidable and adjustable along the hanging direction thereof, and the fixing screw 13
The angle can be adjusted freely around the center.

Therefore, by finely adjusting the mounting position of the shielding plate 5 up and down along the elongated hole 12 as shown by the solid line or the chain line in FIG. For example, if the positioning is adjusted upward, the light-shielding area becomes smaller and the swing angle of the suspension member 1 that issues the alarm is set to a smaller value.On the other hand, if the positioning is adjusted downward, the light-blocking area becomes larger and the swing angle of the suspension member 1 that issues the alarm becomes smaller. 1 is set large, and the warning range of the correction limit of the suspension member 1 can be adjusted.

Furthermore, as shown in FIG. 6, by adjusting the attachment angle to the suspension member 1 around the fixing screw 13, the light-shielding area of the light-shielding plate 5 can be set to be shifted to the left and right. Distribution adjustments can be made.

Next, in the light shielding plate 5 shown in FIG. 7, when the suspension member 1 is shaken within the correction limit, the light receiving element 7 receives the light flux from the light emitting element 6 without giving a warning, and the vibration exceeds the correction limit. The above-mentioned warning notification means is activated by blocking light when vibration occurs, and is formed into a plate body with a tapered wedge-shaped through hole 14 through which the light beam passes through the center of the lower end. As in the case of the embodiment shown in the figures, it is attached to the lower part of the suspension member 1 so that it can slide and adjust its angle freely by means of a fixing screw 13 passed through a long hole 12 in the hanging direction provided at the upper end.

Therefore, by finely adjusting the mounting position of the light shielding plate 5 along the elongated hole 12 as shown by the solid line or broken line in FIG. In other words, by changing the shielding area of the luminous flux of the light emitting element 6 at the left and right edges of the tapered wedge-shaped through hole 14, the warning notification range of the correction limit of the suspension member 1 can be adjusted.
As in the case of FIG. 6, by adjusting the attachment angle to the suspension member 1 around the fixing screw 13, it is possible to perform distribution adjustment of the left and right correction ranges.

Note that the wedge-shaped portion 11 and the wedge-shaped through hole 14
may be formed not only in a downwardly pointed shape but also in an upwardly pointed shape.

Effects As described above, according to the warning device in the automatic tilt error correction device for a surveying machine according to the present invention, by adjusting the position of the light shielding plate 5 provided in the downward extension of the suspension member 1, the suspension member 1 When a shake occurs, the light emitting element 6 corresponding to the shake angle
Since the light-shielding area of the light-shielding plate 5 can be gradually increased or decreased, for example, the more the light-shielding area of the light-shielding plate 5 is reduced, the more the suspension member 1
The deflection angle of the light-emitting element 6 can be set to be small, and conversely, as the light-shielding area of the light-shielding plate 5 is increased, the deflection angle of the suspension member 1 can be set to be larger. The positioning is adjusted by gradually increasing or decreasing the light-shielding area of the plate 5, and the light receiving element 7 accurately generates an electric signal to reliably activate the warning notification means when the vibration exceeds a predetermined correction limit of the suspension member. As such, the mounting position of the light shielding plate 5 can be determined, and when the correction device is installed, slight errors in the dimensions and shape of the light shielding plate or fixing position, or errors in the luminous flux width, light emitting direction, mounting position, etc. of the light emitting element can be detected. Even if there is a vibration, the effect can be achieved evenly so that the warning device accurately issues a warning against vibration that exceeds the predetermined correction limit of the suspension member.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing an outline of the automatic tilt error correction device according to the invention, Fig. 2 is a longitudinal front view thereof, Fig. 3 is a longitudinal side view showing the operating state at the correction limit, and Fig. 4. is a circuit diagram of the warning notification means used in the correction device according to this invention, FIG. 5 is a front view of the main part showing the slide adjustment situation of the shielding plate according to this invention, and FIG. 6 is the main part showing the same angle adjustment situation. and FIG. 7 is a front view of the main part showing the slide adjustment situation of the shielding plate of another embodiment according to this invention. DESCRIPTION OF SYMBOLS 1... Suspension member, 2... Bearing, 3... Rotating shaft, 4... Correction reflecting member, 5... Shielding plate, 6...
...Light emitting element, 7 ... Light receiving element, 8 ... Photo interrupter, 9 ... Warning indicator light, 10 ... Alarm device, 1
DESCRIPTION OF SYMBOLS 1... Wedge-shaped part, 12... Elongated hole, 13... Fixed screw, 14... Wedge-shaped through hole, 15... Fixed correction member, 16... Objective lens, 17... Lens, 18
... Focus plate, 19 ... Eyepiece.

Claims (1)

[Scope of utility model registration request] A correction reflecting member 4 is suspended by a suspension member 1 whose top portion is swingably pivoted to the aircraft body, and a fixed reflecting member 15 is fixed to the aircraft body below by swinging it according to the inclination of the aircraft body. In a device that automatically corrects inclination errors of a surveying machine by reflecting a surveying light beam between the suspension member 1 and the suspension member 1, the fixed reflection member 15 is further bypassed through the correction reflection member 4 located below the suspension member 1. A downwardly extending portion of the suspension member 1 is provided below, and a shielding plate 5 is provided on the downwardly extending portion of the suspending member in a direction parallel to the swinging direction thereof, while the swinging area of the shielding plate 5 is placed between A light emitting element 6 and a light receiving element 7 are provided facing each other via the suspension member 1.
When the deflection exceeds the correction limit, the light receiving element 7 receives or blocks the light beam from the light emitting element 6 which is blocked by the light shielding plate 5, thereby emitting an electric signal and activating the warning notification means. In the warning device in the automatic tilt error correction device for a surveying machine configured as above, a light-shielding plate 5 is provided on the downward extension of the suspension member 1 to gradually increase or decrease the light-shielding area by a positioning adjustment means, and The light beam is blocked by the light shielding plate 5, and the light receiving element 7 generates an electric signal to activate a warning notification means.The swing angle position of the suspension member 1 can be freely adjusted. Warning device in automatic error correction device.