JPH04113012U - surveying machine - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide a surveying instrument that does not require precision fitting and has good reproducibility in attaching and detaching a telescope to an alidade. [Structure] After aligning the markings engraved on the horizontal axis of the telescope and the horizontal axis fitting part of the alidade, they are fixed with screws in the radial direction so as not to rotate. [Effect] A surveying instrument with good reproducibility of attaching and detaching the telescope to the alidade was obtained.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a surveying instrument. For more information, see How the Telescope Arrives at Alidade This relates to a surveying instrument with good reproducibility.

0002

[Conventional technology]

In conventional surveying instruments, to ensure reproducibility of attaching and detaching the telescope to the alidade. In order to maintain high precision in the fit between the horizontal axis fitting part of the telescope and the horizontal axis of the alidade. The so-called precision fitting process was applied.

0003 Altitude angle measurements using conventional surveying instruments, especially electronic theodolites, are performed using photoelectric encoders. It's by Dar. Photoelectric encoders are fixed and movable encoder discs. The sensor consists of an encoder index, an encoder index, and a photoelectric detection section. encoder - The disk is fixedly attached to one horizontal shaft that fits into the horizontal shaft fitting part of the telescope. Also telephoto When attaching the mirror to the alidade, remove the horizontal axis from the horizontal axis fitting part and attach it again. is common. The mutual positional relationship between the horizontal shaft and the horizontal shaft mating part before and after attachment and detachment. If it is not reproduced, surface runout etc. may occur and the encoder disk fixed to the horizontal axis may The mutual positional relationship between the screen and the telescope is not reproduced, and the accuracy of altitude angle measurement decreases. . For this reason, in the past, it was necessary to ensure the reproducibility of the mutual positional relationship between the encoder disk and the telescope. In order to maintain the Ta.

0004 However, conventional precision fitting requires advanced processing technology and is expensive. It becomes a thing. Also, when assembling, attach or detach parts that are tightly fitted. This tends to damage the mating surfaces of the parts.

[0005]

[Problem that the idea aims to solve]

In order to solve the above problems, this invention eliminates the need for precision fitting and allows the telescope alidade to be fixed. The purpose is to provide a surveying instrument with good reproducibility when attached to and detached from the instrument.

[0006]

[Means to solve the problem]

The present invention consists of an alidade (2) and a pair of horizontal shaft bearings (8) of the alidade (2). a) and (8b) can each be rotated so that the inclination angle of the optical axis can be changed in the vertical plane. Horizontal shaft fitting parts (10a), (10a), ( 10b) in a surveying instrument having a telescope (1) formed with a telescope (1), The horizontal shaft fitting parts (10a) and (10b) have screw holes (9c) and (9d) in the radial direction. The screw holes (9c) and (9d) are screwed into the horizontal shafts (6a) and (6b). ) and the horizontal shaft fitting parts (10a), (10b) are fixed with screws (9a) and (9b). ), the horizontal shafts (6a), (6b) and the horizontal shaft fitting parts (10a), (10 Engravings (6e), (6f), (10e), (10f) to correspond to b), respectively. are engraved, and the markings (6e) and (6f) are engraved on the horizontal axes (6a) and (6b). and the markings (10e), (10 The horizontal shafts (6a), (6b) and the horizontal shaft fitting part (1 0a) and (10b) are fixed by the screws (9a) and (9b). A surveying instrument was constructed.

[0007] Further, the screw hole (9c) on the inner circumferential surface of the horizontal shaft fitting portion (10a), (10b), A groove-shaped notch (10g) is bored in the axial direction at a position opposite to (9d). We constructed a surveying instrument with the following characteristics.

[0008]

[Effect]

The horizontal shafts (6a), (6b) and horizontal shaft fitting parts (10a), (10b) are respectively The stamps (6e), (6f) and the stamps (10e), (10f) match. Afterwards, it is removably fixed with screws (9a) and (9b).

[0009]

【Example】

A first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a sectional view showing the first embodiment, and FIGS. 2 and 3 are horizontal axes (6a) and (6b). A cross-sectional view of the horizontal shaft fitting portions (10a) and (10b) is shown.

0010 The sighting telescope (1) has horizontal shafts (6a) and (6b) fitted from the outside. Two shaft fitting parts (10a) and (10b) are provided. Alidade (2) is It is a rotating member that rotates around a straight axis (not shown), and has horizontal axis bearings (8a) and (8b). ) Two holes (2a) and (2b) are drilled at opposite positions to support and fix the . The two horizontal axes (6a) and (6b) are coaxial, and the telescope (1 ) is the rotating shaft, which is supported by the holes (2a) and (2b) of the alidade (2). The horizontal shaft bearings (8a) and (8b) are respectively pivotally supported. This rotation The tilt angle of the telescope's optical axis can be changed in the vertical plane. Horizontal shaft fitting part (1 0a) and (10b) are screwed into set screws (9a) and (9b), respectively. Holes (9c) and (9d) are drilled in the radial direction. Horizontal shafts that mate with each other (6a), (6b) and the horizontal shaft fitting portions (10a), (10b) are set, respectively. It is fixed by screws (9a) and (9b), and each horizontal axis fixing screw (7a) ), (7b). The encoder disk (3) has one horizontal axis ( 6a) is installed perpendicularly to the axis and with the center aligned with the axis. And the encoder index (4) and light fixed to the alidade (2) The altitude angle is measured together with the electric detection section (5).

[0011] The horizontal shaft fitting parts (10a) and (10b) of the telescope (1) are horizontal shaft bearings (8a), The surfaces (10c) and (10d) that fit into (8b), respectively, have a The markings (10e) and (10f) are engraved on each. The engraved position is on the horizontal axis The fitting parts (10a), (10b) and the horizontal shaft bearings (8a), (8b) face each other However, in this example, the set screw holes (9c) and (9d) and the circular It is carved on the opposite side of the circumference. Also, the horizontal shafts (6a) and (6b) are fitted into the horizontal shaft bearings (8a) and (8b), respectively. The horizontal shaft fitting portions (10a) and (10b) of the surfaces (6c) and (6d) that The markings (6e) and (6f) are engraved on each. Inscriptions (10e) and (10f) engraved on surfaces (10c) and (10d) and surface (6 The markings (6e) and (6f) engraved on c) and (6d) match each other. It is marked.

0012 Next, the horizontal shafts (6a), (6b) are fitted with the horizontal shaft fitting parts (10a), (10b). I will explain about the case. In Figures 2(a), (b) and 3, the horizontal axis (6a) A horizontal shaft fitting part (10a) is fitted from the side. In addition, horizontal shaft (6b) and horizontal shaft fitting The fitting with the portion (10b) is the same, and a description thereof will be omitted. horizontal axis (6a) The diameter is smaller than the diameter of the horizontal shaft fitting part (10a), so the horizontal shaft (6a) Inscribed in the horizontal shaft fitting part (10a), but horizontal shaft fitting with the center (O) of the horizontal shaft (6a) It does not coincide with the center (O') of the portion (10a). When inscribed, the horizontal axis (6a) is It rotates relative to the flat shaft fitting part (10a), and the markings carved on the horizontal shaft (6a) Align the mark (6e) with the mark (10e) engraved on the horizontal shaft fitting part (10a). Keep the mutual positions of both constant. After alignment, fix with set screw (9a) and engrave. It is possible to keep the difference Δa between the two centers in the direction of mark matching constant with good reproducibility.

[0013] If the stamp (6e) and the stamp (10e) do not match, or if the set screw (9a) If the horizontal shaft (6a) and the horizontal shaft fitting part (10a) are not fixed with Therefore, the difference Δx between the two centers in the two directions shown in FIG. Keeping Δy constant means that the horizontal shaft (6a) and the horizontal shaft fitting part (10a) This is extremely difficult unless they are perfectly circular and have the same diameter.

[0014] Next, the horizontal shafts (6a), (6b) and the horizontal shaft fitting parts (10a), (10b) are We will explain the construction and assembly. First, move the horizontal axes (6a) and (6b) to the telescope (1). into the horizontal shaft fitting parts (10a) and (10b) of the ), (6f) and the markings (10e), (10f), align the horizontal axes (6a), (6 b) and the horizontal shaft fitting parts (10a) and (10b) are set at predetermined positions in the rotational direction. place Set the horizontal shafts (6a) and (6b) horizontally using the set screws (9a) and (9b). It is fixed to the shaft fitting parts (10a) and (10b). Furthermore, horizontal shaft fixing screw (7a), ( 7b).

[0015] Next, the horizontal shafts (6a), (6b) are connected to the horizontal shaft fitting parts (10a), ( After being tightened to 10b) and integrated, it rotates around the integrated shaft, The end face of the first horizontal shaft (6a) on which the encoder index (3) is installed is relative to the shaft. to create a vertical plane.

[0016] From the horizontal axis fitting parts (10a), (10b) of the telescope (1) to the horizontal axis (6a), 6b) respectively. Place the telescope (1) through the opposing hole ( Installed between the horizontal shaft bearings (8a) and (8b) supported by 2a) and (2b). , after passing the horizontal shafts (6a), (6b) through the horizontal shaft bearings (8a), (8b), Insert it into the horizontal shaft fitting parts (10a) and (10b) at a predetermined position. Next, match the markings (6e), (6f) with the markings (10e), (10f), and Regarding the rotation direction of the flat shafts (6a), (6b) and the horizontal shaft fitting parts (10a), (10b). Install it in the specified location. The horizontal shaft (6a) is fixed by the set screws (9a) and (9b). ), (6b) are fixed to the horizontal shaft fitting parts (10a), (10b). Furthermore, the horizontal axis Tighten with set screws (7a) and (7b). This allows the horizontal axis (6a), (6b ) and the horizontal shaft fitting parts (10a) and (10b) are the same as before separation. reproduced at once.

[0017] A second embodiment of the present invention will be described with reference to FIG. FIG. 4 shows the horizontal axis ( 6a), (6b) and horizontal shaft fitting portions (10a), (10b). 1st Descriptions of points that are the same as or similar to the embodiment will be omitted. The positions of the markings (10e) and (10f) on the horizontal shaft fitting parts (10a) and (10b), In other words, there are notches (10 g) is provided. The notch (10g) is a groove drilled in the axial direction, and the water The flat shaft fitting parts (10a) and (10b) are fitted with the horizontal shafts (6a) and (6b), and the set is completed. When fixed by Tobis (9a) and (9b), the horizontal axis (6a) and (6b) There is no contact at the positions (10h) and (10k) of marks (10e) and (10f), Line contact is made at the edges (10i) and (10l) of the groove. Axial direction The line contact between the horizontal shafts (6a), (6b) and the horizontal shaft fitting parts (10a), (10b) ) can be ensured with good reproducibility, and the difference between the two centers (O) and (O') in one direction can be ensured with good reproducibility. It is possible to keep Δa constant with good reproducibility.

[0018] Note that the horizontal shaft fitting parts (10a) and (10b) are connected to the horizontal shafts (6a) and (6) from the outer surface side. b), but the horizontal shaft fitting part (10a) is inserted from the inner side. It goes without saying that the same can be done when fitting to the horizontal shaft (6a). Nor.

[0019] Conventionally, the horizontal axis (6a) was connected from the horizontal axis fitting parts (10a) and (10b) of the telescope (1). ), (6b) in order to obtain good reproducibility when detaching and reattaching. Precision fitting processing is performed that requires high technology, and assembly and removal requires high technology. This process has now been made possible using conventional technology.

[0020]

[Effect of the idea]

According to the present invention, the markings (6e) and (6f) are engraved on the horizontal shafts (6a) and (6b). ) and the horizontal shaft fitting parts (10a) and (10b) are removably fixed with good reproducibility? Therefore, it is possible to obtain a surveying instrument that does not require precision fitting and has good reproducibility when attaching and detaching the telescope to the alidade. It was done.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a first embodiment.

FIG. 2 is a sectional view of the horizontal shaft and the horizontal shaft fitting portion in FIG. 1;

FIG. 3 is a sectional view of the horizontal shaft and the horizontal shaft fitting portion in FIG. 1;

FIG. 4 is a cross-sectional view of the horizontal shaft and the horizontal shaft fitting portion of the second embodiment.

[Explanation of symbols]

1 telescope 2 Alidade 3 Encoder disk 4 Encoder index 5 Photoelectric detection section 6a, 6b horizontal axis 6e, 6f stamp 7a, 7b Horizontal axis fixing screw 8a, 8b Horizontal shaft bearing 9a, 9b set screw 10a, 10b horizontal shaft fitting part 10e, 10f stamp

Claims (2)

[Scope of utility model registration request] Claim 1: An alidade and a pair of horizontal shaft bearings installed on the alidade, each of which is fitted with a horizontal shaft that is rotatably pivoted so that the inclination angle of the optical axis can be changed in a vertical plane. In a surveying instrument having a telescope in which a shaft fitting part is formed, a screw hole is bored in the radial direction in the horizontal shaft fitting part, the screw hole is screwed into the screw hole, and the horizontal shaft and the horizontal shaft fitting part are screwed into each other. The horizontal shaft and the horizontal shaft fitting part are each engraved with markings for matching, and the markings engraved on the horizontal shaft and the horizontal shaft fitting part are engraved. A surveying instrument characterized in that the horizontal shaft and the horizontal shaft fitting portion are fixed by the screw so that the provided markings match each other. 2. The horizontal shaft fitting portion according to claim 1, wherein a groove-shaped notch is bored in the axial direction at a position facing the screw hole on the inner circumferential surface of the horizontal shaft fitting portion. surveying equipment.