JPH04136511U - Centripetal movement device for surveying equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to use a simple structure that does not require high accuracy in the processing of parts, to be able to smoothly move a surveying instrument to any position without giving any rotational motion, and to be able to An object of the present invention is to provide a centripetal moving device for a surveying instrument that can be formed by adding a small number of members without changing the configuration of the surveying instrument equipped with the centripetal moving device. [Structure] The centripetal moving device for a surveying instrument according to the present invention is a centripetal moving device 30 for a surveying instrument S that moves the main body 10 of the surveying instrument in a horizontal plane with respect to the leveling table 20, and the upper plate 23 is moved in the center. It has a hole 23a and is attached to the lower plate 21 of the leveling stand 20 via a leveling screw, and a bearing stand 31 is attached to the hole 23a of the upper plate 23, and is connected to the tip of this bearing stand 31. Board 32
form. Furthermore, at least one retaining ring 33 having tapered surfaces T1 and T2 is provided between the upper plate 23 and the bearing stand 31.
and a clamp handle 35c that presses and fixes the presser ring 33.
It has fixing means 35 engaged with. The upper plate 23 and the connecting plate 32 are connected by parallel link mechanisms 36a to 36d.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to centripetal moving devices, especially for angle measurement such as transits and theodolites. This invention relates to a centripetal movement device for a surveying instrument.

0002

[Conventional technology]

Total station with transit, theodolite or light wave distance meter Surveying instruments such as Accordingly, centripetal work is being carried out to install surveying instruments vertically above the survey points. and a surveying machine book There is a centripetal movement device that can move and clamp the body in a horizontal plane on the leveling table. There is something built in. Also, without holding the centripetal moving device on the leveling table, A method called the leg extension method, that is, a method of centripetal adjustment using the extension and contraction of the tripod and the leveling screw. There is also.

0003 However, in the former case, if a centripetal movement device is used, the surveying instrument itself can be leveled during centripetal movement. There are many cases where it rotates while moving on the table. In this case, the vertical axis and the sliding surface are If you perform centripetal work with a poor angle, the vertical axis will tilt due to rotation and the leveling will collapse. Therefore, there was a problem in that leveling work had to be performed again. i.e. e.g. For example, the perpendicularity of the sliding surface (moving surface) of the surveying instrument (i.e., the perpendicularity to the perpendicular surface of the vertical axis) Assuming that the angle) is 0.05 and the outer diameter of the sliding surface is 80 mm, the survey instrument body is 30 mm. In the case of rotation, the main body of the surveying instrument will fall 1'6''.

0004 In order to solve this problem, centripetal movement that moves parallelly without adding rotational movement is necessary. Technology is required. This technology was proposed in Japanese Utility Model Application Publication No. 49-128259. There is a technology that This proposed technology involves assembling the main body of the surveying instrument with an integrated leveling stand on a tripod and fixing it to the tripod. There is a design on the bottom plate of the surveying instrument that allows only linear reciprocating movement in one direction with respect to this bottom plate. An inner plate is provided, and on the guide plate, a method for linearly reciprocating the guide plate with respect to the guide plate is provided. The leveling table is configured so that it can move back and forth in a straight line only in the direction perpendicular to the direction. This is a technology that allows the robot to move centripetally in any direction without rotating relative to the bottom plate.

[0005]

[Problem that the idea aims to solve]

The above proposed technology provides orthogonal movement by providing a guide plate and a bottom plate under the leveling table of the surveying instrument. As shown in the figure, the structure is such that the pin engages and moves with the elongated hole, so the pin is elongated. If you move along the hole, you can move relatively smoothly, but if you move in a direction that is inclined to the long hole, When moving, the friction between the pin and the long hole is large and it is difficult to move smoothly. There was a problem. In addition, a long hole is formed using a guide plate, and it fits into this long hole without play. In order to move the parts smoothly, there is a problem of high accuracy and high cost of machining the parts. Ta.

[0006] The purpose of this invention is to eliminate the need for high precision machining of parts and to use a simple configuration that allows rotational movement. We provide a centripetal movement device for surveying instruments that can smoothly move the surveying instrument to any position without causing any disturbance. It is about providing. Another object of the invention is to improve the construction of most surveying instruments with all kinds of centripetal moving devices. It provides a rotational motion that can be formed with a small number of additional components without making any changes. The purpose of the present invention is to provide a centripetal movement device for a surveying instrument.

[0007]

[Means to solve the problem]

The centripetal movement device for a surveying instrument according to the present invention moves the main body of the surveying instrument in a horizontal plane with respect to the leveling table. In the centripetal movement device of a surveying instrument that is moved by The upper plate is attached via a leveling screw, and the connecting plate is attached to the hole in the upper plate and has a connecting plate at the tip. at least one bearing pedestal having a tapered surface between the upper plate and the bearing pedestal; a holding ring; a fixing means that engages with a clamp handle that presses and fixes the holding ring; and has a configuration in which the upper plate and the connecting plate are connected by a parallel link mechanism. be.

[0008] To describe this parallel link mechanism in more detail, it is pivoted to the upper board and can swing horizontally. A pair of first rods and a pair of second rods that are pivotally connected to the connecting plate and can swing horizontally. , are pivotally connected to a third rod which is a common rod, and the first rod comrade and the second rod comrade It is preferable to construct them so that they are parallel to each other. As mentioned above, the upper plate and the connecting plate of the bearing stand are connected by a parallel link mechanism, so the When the bearing stand moves on the panel, the vertical axis of the surveying instrument can be moved without rotating. can.

[0009]

【Example】

Hereinafter, one embodiment of the present invention will be described based on the drawings. In addition, the parts explained below The material, arrangement, etc. do not limit the invention, and may be modified in various ways within the spirit of the invention. It is something that can be done. FIG. 1 shows an embodiment of the present invention, and a surveying instrument S in this example is a surveying instrument S. It is composed of a main body 10, a leveling table 20, and a centripetal movement device 30. The above survey A vertical shaft 11 is provided at the center of the main body 10, and the reference numeral 12 in FIG. The mirror 13 is a centripetal telescope.

0010 The leveling table 20 of this example includes a lower plate 21, a leveling screw 22, an upper plate 23 (parallel plate), and It consists of a micro-adjustment screw, a bubble tube, etc. The centripetal movement device 30 of the surveying instrument of this example includes a connecting plate 32, a presser ring 33, and a presser foot. The ring stopper 34 and the fixing means 35 for the presser ring stopper 34 (clamp handle, rod) , ring) and a parallel link mechanism 36. A tripod mounting screw 21a is formed in the center of the lower plate 21 constituting the leveling table 20. Then, screw this tripod mounting screw 21a and the tripod mounting screw (not shown) to adjust the Attach the semi-stand 20 to the tripod. Further, in this example, the lower plate 21 and the upper plate 23 are engaged with each other by three leveling screws 22, The tip 22a of the shaft of the leveling screw 22 is formed into an inverted conical shape. A projecting portion 22b is formed at the base of the portion 22a, and is engaged with a horizontal spring 22c. Then, turn the leveling screw 22 to level the upper plate 23 and place the surveying instrument S vertically. wear.

[0011] An opening 23a is formed in the center of the upper board 23, and above the opening 23a, The surface is provided with a sliding surface 37 that comes into sliding contact with the bottom surface of the bearing stand 31. and sliding surface A bearing stand 31 is placed on the bearing stand 37, and the vertical axis of the surveying instrument main body 10 is mounted on the bearing stand 31. A cylindrical body 31a that pivotally supports 11 is formed. In this example, an engaging protrusion is provided on the cylindrical body 31a. 31c, and connect the cylindrical body 31a and the shaft using a screw 31b on this engagement protrusion 31c. It is integrally connected to the pedestal 31. This cylindrical body 31a is the opening 23a. It is being penetrated by. Further, at the tip of the cylindrical body 31a (lower part in FIG. 1), A connecting plate 32 is attached.

0012 The connecting plate 32 in this example comes into contact with a presser ring stopper 34, which will be described later, and the bearing stand 3 A first rod that prevents movement of the first rod and constitutes a parallel link mechanism 36 to be described later. 36a and 36b are pivotally connected. Also, between the upper plate 23 and the presser ring stopper 34 A presser ring 33 and an adjusting means 35 are disposed therein. The presser ring 33 is It is an annular member, and as shown in Figure 1, the outer peripheral surface is tapered downward and inward. A surface T1 is formed. The fixing means 35 includes a fixing ring 35a, a rod 35b, and a clamp. It consists of a lamp handle 35c. The fixing ring 35a of this example includes two semicircular members. The inner circumferential surface of this fixing ring 35a is a tapered surface T2 that expands inwardly and downwardly. The tapered surface T2 of the inner peripheral surface of this fixing ring 35a and the outer surface of the presser ring 33 It is configured so that the tapered surface T1 of the circumferential surface comes into contact with it. Also, the fixing ring 35 a is engaged with a clamp handle 35c via a rod 35b.

[0013] As shown in FIG. 2, the parallel link mechanism 36 of this example includes a pair of first rods 36a, 36b, a pair of second rods 36c and 36d, and a third rod 36e. The first rods 36a, 36b are connected to the connecting plate 32 by connecting pins 39a, 39b. The second rods 36c and 36d are pivoted so as to be horizontally swingable, and the second rods 36c and 36d are connected to connecting pins 39c and 36d. 39d, it is pivotally connected to the upper plate 23 so as to be horizontally swingable. Also, the first rod 36a , 36b and the second rods 36c, 36d are connected to the third rod 36e as a common rod. The first rods 36a, 36b are pivotally connected by connecting pins 41a, 41b, The second rods 36c and 36d are parallel to each other. Book The distance between the first rods 36a and 36b and the distance between the second rods 36c and 36d in the example are as follows: The same spacing X is used, and each rod 36a, 36b, 36c, 36d has the same length. using things. In this example, the pivot points between the second rods 36c and 36d and the upper board 23 are Place the connecting pins 39c and 39d at the position where the clamp handle 35c is formed. In addition to securing installation space, the structure is designed so that it does not interfere with the operation of the leveling screw. There is. In addition, in the above embodiment, the connecting plate 32 and the presser ring stopper 34 are configured separately. Although an example is shown, the connecting plate 32 and the presser ring stopper 34 may be formed integrally. Furthermore, although the bearing stand 31 and the cylindrical body 31a are connected with the screw 31b, the bearing stand 31 1 and the cylindrical body 31a can also be formed integrally.

[0014] Next, the operation of the centripetal movement device according to the above embodiment will be explained. First, when installing the surveying instrument on a survey point (not shown), turn the leveling screw 22. The survey instrument main body 10 is leveled. Next, loosen the clamp handle 35c, and While looking at 13, move the surveying instrument body 10 by hand. At this time, the bearing stand 31 is attached to the upper plate 23. When the surveying instrument S can move on the sliding surface 37 and the vertical axis of the surveying instrument S coincides with the vertical axis of the survey point, Rotate the clamp handle 35c. When the clamp handle 35c is rotated, the clamp handle The rod 35b connected to the rod 35c also rotates, and the tapered surface T1 of the presser ring 33 and The tapered surface T2 of the fixed ring 35a comes into contact with the fixed ring 35a, and the fixed ring 35a moves downward. As a result, the presser ring 33 is attached to the upper plate 23, and the fixing ring 35a is attached to the connecting plate 3. 2 are pressed and fixed. In addition, by loosening the clamp handle 35c, The bearing stand 31 becomes free and does not rotate due to the principle of parallel link mechanism. It can slide in a horizontal plane.

[0015] Fig. 4 shows another example of the parallel link mechanism, and there are other examples in which the vertical axis is made flat. Of course, various mechanisms can be applied as long as the configuration allows line movement.

[0016] In addition, each rod in each of the above embodiments has appropriate strength so that it does not bend during operation. The connecting pin is made of these materials, and the connecting pin is properly fitted to prevent looseness. It works without any problems.

[0017]

[Effect of the idea]

As described above, according to the present invention, since a parallel link mechanism is used, the lead of the surveying instrument is The surveying instrument can be moved smoothly relative to the leveling table without rotating the vertical axis, and the vertical axis of the surveying instrument can be adjusted smoothly. Even if you perform centripetal movement after adjusting the vertical axis to the vertical axis of the survey point, the vertical axis of the surveying instrument will not move. Since there is no problem, the leveling will not collapse.

[0018] In addition, in this invention, the component parts to prevent the vertical axis of the surveying instrument from rotating are machined. Accuracy is not required, and the configuration of the surveying instrument equipped with a centripetal movement device is hardly changed. , it is possible to prevent the vertical axis rotation of the surveying instrument with the addition of a small number of members. difference Furthermore, centripetal alignment can be easily performed by shifting the surveying instrument itself without tilting the vertical axis. Note that it can be applied to any type of surveying instrument equipped with a centripetal movement device.

[Brief explanation of drawings]

FIG. 1 is a sectional view of essential parts of a surveying instrument showing an embodiment of the present invention.

FIG. 2 is a view taken along line AA in FIG. 1;

[Figure 3] A-A similar to Figure 2 showing a state of centripetal movement
It is a line arrow view.

FIG. 4 is a view taken along line AA, similar to FIG. 2, showing another embodiment.

[Explanation of symbols] 10 Survey instrument body 20 Leveling base 21 Lower plate 22 Leveling screw 23 Upper plate 23a Hole 30 Centripetal moving device 31 Bearing stand 32 Connecting plate 33 Holding ring 34 Holding ring stopper 35 Holding ring and holding ring rest Gold fixing means 35a Fixing ring (fixing means for the presser ring and presser ring rest) 35b Rod (fixing means for the presser ring and presser ring rest) 35c Clamp handle (fixing means for the presser ring and presser ring rest) 36 Parallel Link mechanism 36a, 36b Parallel link mechanism (first rod) 36c, 36d Parallel link mechanism (second rod) 37 Sliding surface S Survey instrument T1, T2 Tapered surface

Claims (2)

[Scope of utility model registration request] Claim 1: A centripetal movement device for a surveying instrument that moves the main body of the surveying instrument in a horizontal plane relative to a leveling platform, which has a hole in the center and is attached to the lower plate of the leveling platform via a leveling screw. a bearing pedestal mounted in a hole of the upper plate and having a connecting plate at its tip; at least one holding ring having a tapered surface between the upper plate and the bearing pedestal; and pressing the holding ring. A centripetal movement device for a surveying instrument, comprising: a fixing means engaged with a clamp handle to be fixed, and the upper plate and the connecting plate are connected by a parallel link mechanism. 2. The parallel link mechanism includes a pair of first rods that are pivotally connected to the upper plate and can swing horizontally, and a pair of second rods that are pivotally connected to the connecting plate and can swing horizontally. 2. A centripetal movement device for a surveying instrument according to claim 1, wherein the centripetal movement device for a surveying instrument is configured such that the first rod and the second rod are parallel to each other by being pivotally connected to a third rod which is a common rod.