JPH0628630U - Level Adapter for Level Sensor - Google Patents

Abstract

(57) [Summary] [Purpose] To enable easy and safe leveling. [Structure] Scale reading unit 2 that can slide along the staff 1
And the sensor mounting portion 4 to which the level sensor 3 is mounted
And an adapter fixing screw 5 for fixing the scale reading unit 2 at an arbitrary position on the staff 1, and a sensor fixing means for fixing the level sensor 3 to the sensor mounting portion 4, and a longitudinal axis of the staff 1. A rotary shaft 6 parallel to O is rotatably connected to the scale reading unit 2, and the sensor mounting unit 4 is fixed to the rotary shaft 6. In this way, the sensor mounting portion 4 can be rotated about an axis parallel to the longitudinal axis O, and the orientation of the level sensor 3 can be adjusted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a staff adapter for a level sensor for fixing a level sensor used for leveling to a staff.

[0002]

[Prior art]

 As a conventional level sensor staff adapter, as shown in FIG. 4, a scale reading unit 102 slidable along the staff 1, a sensor mounting unit 104 to which the level sensor 3 is mounted, and a scale reading unit 102 are provided. Some of them are provided with an adapter fixing screw 105 for fixing at an arbitrary position on the staff 1 and a sensor fixing screw 115 for fixing the level sensor 3 to the sensor mounting portion 104.

The graduation reading unit 102 has a U-shaped cross section, a graduation reading hole 102a is provided in the graduation facing portion, and a pair of pointers 109 facing each other as a reading scale unit are provided on the inner peripheral edge of the graduation reading hole 102a. Has been. The plate-shaped sensor mounting portion 104 is molded integrally with the scale reading portion 102, and the light receiving center position 10 of the level sensor 3 and the pointer 109 of the scale reading portion 102 are aligned with the sensor mounting surface 104a of the sensor mounting portion 104. A positioning pin 113 for this purpose is provided, and a hole 124a for the sensor fixing screw is provided.

In order to perform leveling, a level sensor staff adapter to which the level sensor 3 is fixed is slid along the staff 1 so that the level sensor 3 projects the height of the laser beam B projected from the electronic level device 12. When the position is detected, the adapter fixing screw 105 is screwed in to fix the level sensor staff adapter to the staff 1. Then, the scale 8 of the staff 1 that matches the pointer 109 of the scale reading unit 102 is read.

[0005]

[Problems to be solved by the device]

 However, with the above-mentioned level sensor staff adapter, the level sensor 3 can be mounted only in the same direction as the direction of the staff scale 8, and as shown in FIG. Since the scale 8 of the staff 1 is read while standing between the staff 12 and the staff 1, the laser beam B projected from the electronic level device 12 to the level sensor 3 is often blocked, and it is impossible to avoid this. It was necessary to read the scale 8 of the staff 1 with various postures, and there was a problem that workability was poor.

Another conventional level sensor staff adapter (not shown) is one in which the level sensor 3 is attached in the direction opposite to the direction of the staff scale 8. According to this level sensor staff adapter, a laser Since there is no risk of blocking the beam B, the staff graduation 8 can be read without taking an unnatural posture, but as shown in Fig. 5, the staff 1 is set up under a cliff or a cliff or by a wall. When the surveying work is performed, the scale display surface 1a of the staff 1 faces the cliff side, which makes it difficult to read the scale 8 and poses a problem in the work.

The present invention has been made in view of such circumstances, and an object thereof is to provide a leveling rod adapter for a level sensor, which can perform leveling work easily and safely.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a level sensor staff adapter according to a first aspect of the present invention is a scale reading unit slidable along a staff, a sensor mounting portion to which a level sensor is mounted, and the scale reading unit. A level sensor staff adapter for fixing the level sensor to the sensor mounting portion, and an adapter fixing means for fixing the level sensor at an arbitrary position on the longitudinal axis of the staff. Parallel rotating shafts are rotatably connected to the scale reading unit, and the sensor mounting unit is fixed to the rotating shafts.

According to another aspect of the invention, in the level sensor staff adapter, a scale reading section capable of sliding along a staff, a sensor mounting section to which a level sensor is attached, and the scale reading section are provided. An adapter fixing means for fixing at an arbitrary position above, a first sensor positioning means for positioning the level sensor, which is provided on a scale scale-side mounting surface of the sensor mounting portion, and the level sensor for mounting the sensor. In the level sensor staff adapter for fixing the sensor to the section, a second sensor positioning means for positioning the level sensor is provided on the surface opposite to the mounting surface on the scale scale side of the sensor mounting part. It was

Further, in the level sensor staff adapter according to the third aspect of the invention, the scale reading section capable of sliding along the staff, the sensor mounting section to which the level sensor is attached, and the scale reading section are provided. A level sensor staff adapter, comprising adapter fixing means for fixing at an arbitrary position above, and sensor fixing means for fixing the level sensor to the sensor mounting portion, which is perpendicular to the longitudinal axis of the staff. A rotary shaft having a center line passing through the reading scale portion of the scale reading unit is rotatably connected to the scale reading unit, and the sensor mounting portion is fixed to the rotary shaft.

Further, the level sensor staff adapter of the invention according to claim 4 is provided with a click stop mechanism for temporarily holding the sensor mounting portion at a predetermined rotation position.

[0012]

[Action]

 As described above, since the rotary shaft parallel to the longitudinal axis of the staff is rotatably connected to the scale reading unit and the sensor mounting unit is fixed to the rotary shaft, the sensor mounting unit should be rotated. The orientation of the level sensor can be adjusted.

Further, if the sensor positioning means for positioning the level sensor is provided on the surface of the sensor mounting portion opposite to the surface on the scale scale side, the level sensor can be used as the mounting surface on the scale scale side of the sensor mounting portion. It can be attached to both the opposite side and the opposite side.

Further, a rotary shaft that is orthogonal to the longitudinal axis of the staff and has a center line passing through the reading scale unit of the scale reading unit is rotatably connected to the scale reading unit, If the sensor mounting portion is fixed to the shaft, the sensor mounting portion can be rotated around an axis orthogonal to the longitudinal axis of the staff.

Further, if a clip stop mechanism for temporarily holding the sensor mounting portion at a predetermined rotation position is provided, the level sensor is temporarily held at the predetermined rotation position. be able to.

[0016]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a staff adapter for a level sensor according to an embodiment of the present invention. This level sensor rod adapter is for fixing the scale reading unit 2 slidable along the rod 1, the sensor mounting unit 4 to which the level sensor 3 is attached, and the scale reading unit 2 at arbitrary positions on the rod 1. The adapter fixing screw 5 and the sensor fixing screw (not shown) for fixing the level sensor 3 to the sensor mounting portion 4 are provided.

A rotary shaft 6 parallel to the longitudinal axis O of the staff 1 is rotatably connected to the scale reading unit 2 via a bearing unit 7, and the sensor mounting unit 4 is fixed to the rotary shaft 6. .

The scale reading unit 2 having a U-shaped cross section is slidably fitted on the staff 1. A scale 8 is provided on the surface of the staff 1 along the longitudinal axis O, and a scale reading hole 2a is provided at the center of the scale reading unit 2 facing the scale 8. On the inner peripheral edge of the scale reading hole 2a, a pair of pointers 9 and 9 that face each other as a reading scale portion are provided. An unillustrated female screw is provided on the side surface of the scale reading unit 2, and an adapter fixing screw 5 is screwed into the female screw.

A hole (not shown) for a sensor fixing screw is provided in the lower portion of the sensor mounting portion 4, and a positioning pin (not shown) is provided in the upper portion. On the other hand, on the back surface of the level sensor 4, a hole (not shown) for inserting the position pin and a female screw (not shown) for screwing the sensor fixing screw are provided respectively. When the positioning pin enters into the hole on the back surface of the level sensor 3, the light receiving center position 10 of the level sensor 3 and the pointer 9 of the scale reading unit 2 coincide with each other.

Next, how to use the level sensor staff adapter of this embodiment will be described.

First, the level sensor 4 is fixed to the level sensor rod adapter. To fix the level sensor 4 to the level sensor rod adapter, touch the back surface of the level sensor 3 to the sensor mounting surface of the sensor mounting portion 4. At this time, the positioning pin of the sensor mounting portion 4 is inserted into the hole on the rear surface of the level sensor 3, and the female screw on the rear surface of the level sensor 3 is aligned with the hole of the sensor mounting portion 4. Then, the sensor fixing screw is screwed into the female screw on the back surface of the level sensor 3. By doing so, the level sensor 3 is fixed to the sensor mounting portion 4 of the level sensor staff adapter in a state where the light receiving center position 10 of the level sensor 3 and the pointer 9 of the scale reading unit 2 are aligned. At this time, the sensor mounting portion 4 is rotated as shown by the chain double-dashed line in FIG. 1, and the light receiving portion 3a of the level sensor 3 is oriented in the direction opposite to the scale display surface 1a of the staff 1.

Next, the scale reading unit 2 of the level sensor staff adapter is fitted to the staff 1.

After that, the laser beam B projected from the electronic level device 12 is received by the light receiving section 3 a of the level sensor 3. Since the height position of the laser beam B can be known by the buzzer sound as well as the display portion 3b of the level sensor 3, the level sensor staff adapter is slid along the staff 1 according to the tone color. Then, when the laser beam B overlaps the light receiving center position 10 of the level sensor 3, the adapter fixing screw 5 is tightened, whereby the level sensor staff adapter is fixed to the staff 1.

Finally, the scale 8 of the staff 1 that matches the pointer 9 of the scale reading unit 2 is read.

Since the light-receiving portion 3a of the level sensor 3 faces in the direction opposite to the scale display surface 1a of the staff 1, as shown in FIG. 2, the worker 11 who supports the staff 1 does not block the laser beam B and does not interfere with the laser beam B. You can read it by standing in front of the scale 8.

In addition, when the leveling work is performed by setting the leveling rod 1 on the cliff or the edge of the cliff, as shown in FIG. It is rotated by ° so that the laser beam B is received. Since the operator can face the scale display surface 1a of the staff 1 on a line orthogonal to the laser beam B, the staff scale 8 can be easily and safely read even on a downhill or a cliff.

In the above embodiment, the case where the sensor mounting portion 4 is simply rotatable has been described. However, a click stop mechanism may be adopted to hold the sensor mounting portion 4 at a predetermined rotation position. Good. For example, the bearing 7 is formed into a disk shape that covers the level sensor 3, dents are provided at a predetermined interval (for example, 90 °) along the circumferential direction on the lower surface of the bearing, and recesses are formed on the upper surface of the sensor mounting portion 4. A ball is housed in the recess, and a coil spring for urging the ball to the lower surface of the bearing is housed.When the ball urged by the coil spring fits into the recess on the lower surface of the bearing, the sensor is mounted. The rotational position of the part should be temporarily retained.

In the above-described embodiment, the case where the sensor mounting portion 4 is rotatable about an axis parallel to the longitudinal axis O of the staff 1 has been described, but instead of this, the sensor mounting portion 4 is orthogonal to the longitudinal axis O of the staff 1. Also, a rotation shaft (not shown) having a center line passing through the pointer 9 of the scale reading unit 2 is rotatably attached to the scale reading unit 2, and the sensor mounting portion 4 is fixed to the rotation shaft, and the sensor mounting portion 4 is attached. Even if it is made rotatable about an axis orthogonal to the longitudinal axis O of the staff 1, the same effect as that of the above-described embodiment can be obtained.

According to this embodiment, since the level sensor 3 does not rotate unnecessarily, stable work can be expected, and when the staff 1 falls or the staff adapter for level sensor is struck, it is disc-shaped. The bearing portion of 1 can prevent the level sensor 3 from being damaged.

FIG. 3 is a perspective view showing a staff adapter for a level sensor according to another embodiment of the present invention.

A hole 24c for a sensor fixing screw is provided in the lower portion of the sensor mounting portion 24, and a positioning pin 13a is provided in the upper portion. On the other hand, on the back surface of the level sensor 3, a hole (not shown) for inserting the positioning pin 13a and a female screw (not shown) for screwing the sensor fixing screw 15 are provided respectively. When the positioning pin 13a is inserted into the hole on the back surface of the level sensor 3, the light receiving center position 10 of the level sensor 3 and the pointer 9 of the scale reading unit 2 coincide with each other.

In the level sensor staff adapter of FIG. 1, the scale reading unit 2 and the sensor mounting unit 4 are connected via the bearing unit 7 and the rotary shaft 6, but in this embodiment, the scale reading unit 22. The sensor mounting portion 24 and the sensor mounting portion 24 are integrally molded, and the positioning pin 13b for positioning the level sensor is also provided on the surface 24b of the sensor mounting portion 24 opposite to the scale scale side mounting surface 24a. It can be attached to both the scale scale side attachment surface 24a of the attachment portion 24 and the opposite surface 24b thereof.

Therefore, by appropriately replacing the level sensor 3, the staff scale 8 can be read safely even under a cliff or a cliff.

[0035]

[Effect of device]

 As described above, according to the level sensor staff adapter of the invention of claim 1, the sensor mounting portion can be rotated to adjust the direction of the level sensor, so that the staff can be easily and safely placed even under a cliff or a cliff. The scale can be read.

According to the level sensor staff adapter according to the second aspect of the invention, since the level sensor can be mounted on both the scale scale side mounting surface and the opposite surface of the sensor mounting portion, the level sensor can be mounted on the level sensor. By appropriately replacing, for example, the staff scale can be read safely even under a cliff or a cliff.

Further, according to the level sensor staff adapter of the third aspect of the invention, the sensor mounting portion can be rotated about an axis orthogonal to the longitudinal axis of the staff, which is the same as the first aspect of the invention. The effect of can be obtained.

Further, according to the level sensor staff adapter of the invention of claim 4, the level sensor can be temporarily held at a predetermined rotation position, so that the level sensor can be prevented from wobbling. This enables stable leveling work.

[Brief description of drawings]

FIG. 1 is a perspective view showing a staff adapter for a level sensor according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a method of using the level sensor staff adapter of FIG. 1.

FIG. 3 is a perspective view showing a staff adapter for a level sensor according to another embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional leveling rod adapter for a level sensor.

FIG. 5 is a view for explaining a method of using a conventional level sensor staff adapter.

[Explanation of symbols]

 1 Scale 2 Scale reading part 3 Level sensor 4 Sensor mounting part 5 Adapter fixing screw 6 Rotating shaft 7 Bearing part 8 Scale scale

Claims (4)

[Scope of utility model registration request] 1. A scale reading unit slidable along a staff, a sensor mounting unit to which a level sensor is mounted, an adapter fixing unit for fixing the scale reading unit at an arbitrary position on the staff, In a level sensor staff adapter having a sensor fixing means for fixing the level sensor to a sensor mounting portion, a rotary shaft parallel to a longitudinal axis of the staff is rotatably connected to the scale reading unit, A level sensor staff adapter, wherein the sensor mounting portion is fixed to the rotating shaft. 2. A scale reading unit slidable along a staff, a sensor mounting unit to which a level sensor is mounted, an adapter fixing unit for fixing the scale reading unit at an arbitrary position on the staff, For a level sensor including first sensor positioning means for positioning the level sensor, which is provided on the scale scale side mounting surface of the sensor mounting portion, and sensor fixing means for fixing the level sensor to the sensor mounting portion. In the staff adapter, the second sensor positioning means for positioning the level sensor is provided on the surface of the sensor mounting portion opposite to the mounting surface on the scale scale side, and the second level sensor positioning means is provided. 3. A scale reading unit slidable along a staff, a sensor mounting unit to which a level sensor is mounted, an adapter fixing unit for fixing the scale reading unit at an arbitrary position on the staff, A level sensor staff adapter having a sensor fixing means for fixing the level sensor to a sensor mounting portion, having a centerline orthogonal to the longitudinal axis of the staff and passing through the reading scale portion of the scale reading portion. A level sensor staff adapter, wherein a rotary shaft is rotatably connected to the scale reading unit, and the sensor mounting unit is fixed to the rotary shaft. 4. The level sensor staff adapter according to claim 1, further comprising a click stop mechanism for temporarily holding the sensor mounting portion at a predetermined rotation position.