JPH055448Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a distance measuring pole used as an auxiliary tool in topographic surveying and the like.

(Prior art) Various types of tape measures and light wave rangefinders are used for so-called direct measurements such as distance surveying and topographical surveying, and standard poles and prism poles are used as auxiliary tools for these measuring instruments. Ru. Standard poles have their outer peripheries painted in two colors at predetermined intervals, and are used as targets by standing vertically over survey points when surveying using a tape measure. On the other hand, a prism pole is a pole with a short-distance prism (reflector) or a long-distance prism attached to the tip of the pole, and when surveying using a light wave rangefinder, it is placed on a measurement point and used for the lightwave distance measurement. It reflects the light sent from the instrument, making it possible to measure distance and angle at the same time.

By the way, when the survey site has many ups and downs such as a mountain forest or hilly area, these poles are used differently depending on the distance and topography, but it is necessary to decide the survey method at the target point. Therefore, the operator has to carry the standard pole and the prism pole, which makes it cumbersome to use the poles properly and requires unnecessary labor. Furthermore, for long-distance prism poles, each manufacturer fixes a 5/8-inch bolt at the tip of the pole, but the shape of the reflector differs depending on the manufacturer, and the shape of the reflector differs depending on the manufacturer. Since the lengths from the abutment to the center of the prism were different, they were incompatible and caused inconvenience. Furthermore, since the bolt at the tip of the pole for short distance use has a smaller diameter than for long distance use, it has been impossible to freely attach prisms for long distance use and short distance use to each prism pole. As described above, since the prism poles for long-distance and short-distance use are not compatible with each other, these prism poles must be carried along with the standard pole, which poses the problem of significantly lower workability. It was left behind. Furthermore, although the length of the pole is usually 2 m, if there is a tree in front of the surveying point, this tree may obstruct the progress of the light waves. However, it was difficult to carry around a pole that reached all the way to the top of the tree.

This invention was made in view of the above problems,
The object of the present invention is to provide a highly versatile ranging pole that can be used as a standard pole for distance measurement as well as a prism pole.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a female thread for attaching a butt to the lower end of the pole, while
A female screw having the same diameter as the female screw and into which the bolt is screwed is provided at the upper end, and the bolt has a collar in the middle, a thread is carved on the shaft circumferential surface with the same diameter on both ends, and a screw is provided on one end. A small bolt with a small bolt diameter is connected in series, and the small bolt side is inserted into the upper end of the pole, the bolt is screwed into the female thread, and the other end of the bolt extending from the pole is connected to a long-distance bolt. The short distance prism is attached to a small bolt extending from the pole by screwing the prism or connecting another pole having the same diameter as the pole, and screwing the other end of the bolt into the female thread of the pole. It is said that

(Function) With the above configuration, when a distance measuring pole is used for distance surveying, it can be set vertically on a measuring point and used as a target. When connecting another pole to extend this rangefinding pole, insert the small bolt side of the bolt into the upper end of the rangefinder pole, and screw one end of the bolt into the female thread of the rangefinder pole. do. The distance measuring pole can be connected by screwing the end of another pole onto the other end of the bolt extending from the distance measuring pole.

Next, when the distance measuring pole is used as a prism pole, the other end of the bolt is extended from the tip of the distance measuring pole and screwed on, and the long distance prism is attached to this bolt. On the other hand, for short distances, the other end of the bolt is screwed into the tip of the distance measuring pole, and the short distance prism is attached to a small bolt at one end of the bolt extending from the distance measuring pole.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is an overall view of the ranging pole, partially shown in cross section.

This rangefinding pole 1 has an outer tube 2, an inner tube 3, and a bolt 4 as main parts, and has a configuration in which a long-distance prism 5 and a short-distance prism 6 are attached, and an extension pole 12 can be connected. It's summery.

The outer tube 2 and the inner tube 3 are cylindrical and made of light and strong glass fiber. The outer peripheral surface of the outer tube 2 is painted black B and yellow Y at intervals of 20 cm to make it easier to see as a target. Further, at the lower end 2a of this outer tube 2, there is a nut 7 provided with a standard female thread of 5/8 inch.
is installed inside the nut, and a conical protrusion 8 is fixed to this nut by screwing.

The inner tube 3 has a substantially smaller diameter than the outer tube 2, with a 10 mm diameter on the outer circumferential surface.
A reverse scale M of units is marked. When the lower end 3a is slightly expanded, the inner tube 3 is inserted into the upper end 2b of the outer tube 2 by twisting the inner tube.
The lower end portion 3a of the can be locked. In addition, when the inner tube 3 is pulled out, the length from the top of the prong 8, which is the maximum extension of the distance measuring pole 1, to the center of the prism 6a of the short distance prism 6, which will be described later, is set to be 2 m. On the other hand, the upper end 3 of the inner tube 3
b has a nut 10 with a 5/8 inch female thread.
is installed inside.

The bolt 4 has a cross shape as shown in FIG. 2, and has a 5/8 inch thick bolt shaft with a thread carved on its outer periphery. A small bolt 4c, which has a smaller diameter than the outer diameter of the bolt and has a thread on its outer periphery, projects from one end 4a of the bolt. In addition,
A collar 4d is integrally formed on the other end side 4b of the bolt. Further, a locking round nut 11 is screwed into one end of the bolt 4 (see FIG. 1).

The long-distance prism is for high-precision surveying, and the fourth prism is for high-precision surveying.
As shown in the figure, a prism 5a (reflector) made of glass or plastic is integrated into a main body 5b. This main body is rotatably attached to a base 5c having a 5/8 inch screw hole 5d in its lower part, and the angle of the prism 5a can be varied by an adjustment screw 5e. On the other hand, as shown in FIG. 6, the short-distance prism 6 has a prism 6a made of the same material as the long-distance prism 5, and has a smaller overall shape than the long-distance prism, and has a main body 6a. A small diameter screw hole 6c is provided on the lower side of the holder. Note that this short-distance prism is formed to a predetermined size so as to comply with the unified standard.

Next, how to use the distance measuring pole will be explained.

First, when measuring a distance, the distance measuring pole 1 can be set as a target object by standing vertically above a measuring point, like a conventional standard pole. In addition, if there is a standing tree etc. in front of the survey point and it is necessary to extend the distance measuring pole, in this example, the length is 2 m.
The other poles 12 are connected as appropriate. That is, as shown in FIG. 3, the lower end of the other pole 12 is connected to the inner tube 3 of the ranging pole 1. First, one end 4a of the bolt 4 is inserted into the upper end of the inner tube 3, and then the nut 1
One end 4a of the bolt 4 is screwed into the female thread 0.
The other end side 4 of the bolt 4 extending from the inner tube 3
b is screwed into the screw hole 12a provided at the lower end of the pole 12, and the pole 12 is brought into contact with the collar 4d to firmly connect it. As a result, the other pole 12 is connected to the distance measuring pole 1, and it can be extended to 4 m with one connection and 6 m with two connections, and if there is a tree in front of the survey point, the pole can be extended up to the top of this tree. It is possible to extend the length of the pole, and there is no need to carry around a particularly long pole.

Next, a case will be described in which the distance measuring pole 1 is used as a prism pole in surveying using a light wave distance meter. First, when installing the long-distance prism 5, the other end 4a of the bolt 4 protrudes from the inner tube 3, as in the case of connecting the other pole 12, but the height of this bolt 4 needs to be adjusted. (See Figure 4). In other words, long distance prism 5
Each manufacturer makes the mounting screw hole 5d 5/8 inch, but since it is used in combination with the prism pole, the shape and length of the prism 5 differs from manufacturer to manufacturer. Therefore, when attaching a long-distance prism of another manufacturer to the distance-measuring pole 1 of the present invention, it is necessary to
The length L from the top of the prism to the center of the prism 5a is 2
It becomes necessary to set it so that it becomes m. In this case, the long distance prism 5 is attached to the other end 4a of the bolt 4, and the amount of tightening of the one end 4a of the bolt 4 to the female thread of the nut 10 is adjusted and set as appropriate. When the setting is completed, the locking round nut 11 is tightened and fixed to the end face of the inner tube 3, thereby firmly attaching the long distance prism 5 to the distance measuring pole 1.

On the other hand, when installing the short-distance prism 6,
As shown in the figure, the length of the bolt 4 is set in advance so that the length L between the center of the prism 6a and the top of the stud 8 is 2 m, so no height adjustment is necessary. In this case, the bolt 4 is attached to the female thread of the nut 10.
The bolt 4 is firmly fixed to the distance measuring pole 1 by screwing the other end 4b. Then, the short distance prism 6 is screwed into the small bolt 4c extending from the inner tube 3 and attached. As a result, a long-distance prism or a short-distance prism is fixed to the upper end of the rangefinder pole, which can be used as a prism pole of a light wave rangefinder.

(Effects of the invention) As explained above, the present invention provides a measuring pole used as an auxiliary tool for surveying equipment with female threads at both the top and bottom ends, a flange at the middle of the bolt that is screwed into the female thread, and a small bolt connected to one end of the bolt. Therefore, by changing the mounting direction and screwing the bolt onto the measuring pole, it is possible to connect and extend other poles and to attach long-distance and short-distance prisms. Therefore, with only one type of measuring pole, it is possible to deal with cases where there is a tree in front of the survey point and the prism position must be raised, and it can be used as a standard pole for normal distance surveying, and can also be used as a pole for long-distance or short-distance prisms when using an optical distance meter. Moreover, when attaching a long-distance prism, it is possible to easily attach various prisms with different shapes and specifications by simply adjusting the height, which greatly increases versatility.

In addition, at the measurement site, the inconvenience of preparing multiple poles according to the surveying method as in the past is eliminated, and you only need to carry the distance measuring pole, improving work efficiency and reducing labor. There are other effects.

[Brief explanation of the drawing]

1 to 5 show embodiments of the present invention,
Figure 1 is a front view of the ranging pole, partially shown in cross section.
Figure 2 is an overall view of the bolt, Figure 3 is an explanatory diagram showing the connection state of the distance measuring pole, Figure 4 is an explanatory diagram of the long distance prism attached to the distance measuring pole, and Figure 5 is an illustration of the same short distance. It is an explanatory view of a state where a prism is attached. 1...Distance measuring pole, 2...Outer tube, 3...Inner tube,
4... Bolt, 4c... Small bolt, 5... Long range prism, 6... Short range prism.

Claims (1)

[Claims for Utility Model Registration] The lower end of the pole is provided with a female thread for attaching the butt, while the upper end is provided with a female thread with the same diameter as the female thread and into which a bolt is screwed, and the bolt has a collar in the middle part. A screw is carved on the circumferential surface of the shaft with the same diameter on both ends, and a small bolt with a small bolt diameter is connected to one end, and the small bolt side is inserted into the upper end of the pole. Screw a bolt onto the female thread, screw a long distance prism onto the other end of the bolt extending from the pole, or connect another pole with the same diameter as the pole, and connect the other end of the bolt to the female thread of the pole. A distance measuring pole characterized by attaching a short-range prism to a small bolt that is screwed into the pole and extends from the pole.