CN204405068U - Total Station Prism - Google Patents

Abstract

The utility model discloses a kind of total station prism, comprise support and by the reflecting prism of horizontal rotating shaft device on this support, also comprise: tripod, the set square on this tripod in order to load described support, and is provided with level meter as support plate on set square; Distance measuring equipment, is arranged on the side of support, and range finding head is downward, and is positioned on the axis of described horizontal rotating shaft; And display screen, arranging on the bracket, connecting described distance measuring equipment for exporting range measurement.The utility model can provide height number accurately, and ensures the vertical bury pipe of its support.

Description

Total Station Prism

technical field

The utility model relates to a total station prism.

Background technique

The prism used on the prism of the total station is called a reflective prism, also known as a reflective sheet, which is used as a reflective object for distance measurement. During distance measurement, the reflective prism receives the light signal from the total station and reflects it back. Based on this principle, the total station sends out an optical signal, receives the optical signal reflected from the reflective prism, calculates the phase shift of the optical signal, etc., and indirectly obtains the time of light passing, and finally measures the distance from the total station to the reflective prism .

In the actual measurement using the total station, generally at least two people are required to cooperate with the measurement, one of whom operates the total station at the measurement point, and the other is responsible for running the point and operating the total station prism at the corresponding point. The personnel who operate the prism of the total station must inform the personnel who operate the total station of the prism height of the point to ensure that the record and calculation of the elevation of the measuring point are correct. Therefore, the height of the reflective prism on the total station prism becomes a very important parameter.

At present, the height of the reflective prism on the prism of the total station is mainly obtained by measuring, usually directly with a ruler or read by a prism rod with a scale. Among them, the former is inconvenient to operate and low in efficiency, and the use of dimension measurement is limited by the operator's experience and operating environment, and the measurement error is relatively large. For the prism rod with scale, it is generally used as a single rod, and the verticality itself cannot be guaranteed, and the measurement error is relatively large.

Chinese patent document CN203744980U discloses a digital centering rod for measurement, which measures the current height of the reflective prism through the ranging system, and then transmits it to the total station through the data transmission system, which effectively solves the efficiency problem of reflective prism measurement, However, it still only adopts a single rod structure, and the verticality of the single rod (prism rod, also called flower rod) cannot be effectively guaranteed.

Contents of the invention

The purpose of the utility model is to provide a total station prism, which can provide accurate height and ensure the verticality of its support.

The technical scheme that the utility model adopts is:

A total station prism, including a bracket and a reflective prism mounted on the bracket through a horizontal rotating shaft, also includes:

a tripod, the triangular plate on the tripod is used as a carrier plate to place the bracket, and a level is arranged on the triangular plate;

The distance measuring device is arranged on the side of the bracket, the distance measuring head is downward, and is located on the axis of the horizontal rotating shaft; and

The display screen is arranged on the bracket and connected to the distance measuring device for outputting distance measurement results.

As can be seen from the above structure, according to the utility model, a tripod is configured for the total station prism to replace the current single rod support, and the tripod cooperates with the adjustment of the spirit level to make the triangular plate at the level, thereby ensuring that the reflective prism carried by the triangular plate The axis of the horizontal rotating shaft is in a horizontal state, matching the verticality of the prism rod, and the utility model is easier to ensure. For the height, the distance measuring device is used for distance measurement. The distance measurement of the distance measuring device is accurate only when the so-called verticality is reliably guaranteed, so the height of the reflective lens is more accurate.

For the above-mentioned total station prism, in some embodiments, there are two distance-measuring devices, one on each side of the stand, and a more accurate height value can be obtained by comparing the distances measured by the two distance-measuring devices.

Further, the level is a bubble level and a cylinder level, the axis of which is perpendicular to the axis of the horizontal rotating shaft, so that more accurate measurement results can be obtained.

Preferably, in order to adapt to applications in different regions, the triangular plate has a central hole, and an adjusting nut is fitted on the central hole;

Correspondingly, the bracket is assembled on the triangular plate through an adjusting screw matched with the adjusting nut, wherein the adjusting screw is a vertical rod.

Preferably, the legs of the tripod are legs whose length can be adjusted, and the adjustment is convenient.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a total station prism according to the present invention.

Fig. 2 is a schematic structural view of the user side of a total station prism.

In the figure: 1. Spirit level, 2. Bracket, 3. The first distance measuring device, 4. The second distance measuring device, 5. Reflecting prism, 6. Display screen, 7. Adjusting screw, 8. Adjusting nut, 9. Triangular plate, 10. thigh portion, 11. straight groove, 12. adjusting nut, 13, adjusting screw rod.

Detailed ways

As mentioned in the background technology section, the current total station prism is generally supported by a single rod, and the reflective prism 5 is arranged on the top of the single rod, so that in use, the operator erects it at the measuring point, and its verticality depends entirely on The operator's experience and feel to master, there is no precision at all.

Even if there is a scale on a single pole, the height value obtained is not accurate because the verticality cannot be accurately grasped. In other words, when a single pole cannot be vertical, there is a certain angle between it and the vertical plane, and the obtained The displayed height value is smaller than the actual height value.

Under this condition, even the configuration of the distance measuring device will produce errors, and even the errors are relatively large.

Referring to accompanying drawings 1 and 2 of the description, according to a preferred embodiment of the present invention, a tripod is used instead of a single pole (i.e. a prism pole), and the support of the operator is no longer needed during use, but it is stood on the measuring point, and then adjusted The level of the triangular plate 9 is sufficient, which not only can ensure the relative verticality of the support 2, but also has good stability, which is conducive to orderly measurement.

Then the guarantee of verticality is that the total station prism shown in the figure has the following structure:

Like the conventional total station prism, it includes a support 2 and a reflective prism 5 mounted on the support 2 through a horizontal rotating shaft.

The bracket 2 is generally a U-shaped structure or a ring structure, and an equivalent U-shaped structure or a ring structure may also be used as a general choice in the field, and will not be repeated here.

The general structure of the support 2 is that it is a left-right symmetrical structure, and a horizontal axis is set in the left-right direction, and then the reflective prism 5 is mounted on the horizontal axis, so that the reflective prism 5 can be flipped around the horizontal axis.

Generally speaking, the direction in which the axis of the horizontal axis extends is the left and right direction, also called the side, and the front and rear directions are matched to the front and rear sides.

Meanwhile, the axis of the horizontal axis is perpendicular to the axis of the reflection prism 5 .

Further, a tripod is configured to replace the single rod, and a triangular plate 9 on the tripod is used as a carrier plate for placing the bracket 2 , and a level 1 is arranged on the triangular plate 9 .

A tripod is a commonly used device, which is widely used, for example, as a support for instruments and meters. In some applications, a spirit level 1 is provided, but the usage method is different from this solution.

In this solution, the spirit level is used with a tripod to ensure the verticality of the bracket 2, thereby ensuring the accuracy of distance measurement.

Further, a distance measuring device is configured, such as the first distance measuring device 3 and the second distance measuring device 4 shown in FIG. On the condition that the triangular plate 9 is horizontal, the distance measuring head remains vertical, so that an accurate height value can be obtained.

The display screen 6 is arranged on the bracket 2 and connected to the distance measuring device for outputting the distance measurement result.

Since simple distance measurement does not require complex processing circuits, a special rangefinder is equipped under the existing technical conditions, and the rangefinder contains a display screen. Therefore, this does not involve any improvement in the processing method of the distance measurement data, but only for the measurement. Simple application from remote devices.

The distance measuring head and the display screen can be set separately, and can also be integrated to form an existing device, namely a distance measuring instrument.

The number of display screens can be the same as that of the range-finding heads, or can be set as one separately, and all the range-finding heads share one display screen.

In some simplified applications, there is only one distance measuring device, and it is necessary to ensure that the level 1 can accurately adjust the level of the set square 9 .

In some applications, in order to raise the level of the top triangular plate 9, two spirit levels 1 need to be configured, such as cylindrical spirit levels, or can be configured as one spirit level, such as spherical spirit levels, which can be adjusted horizontally in two directions.

In a preferred embodiment, there are two distance-measuring devices, one on each side of the bracket 2, such as the first distance-measuring device 3 and the second distance-measuring device 4 shown in FIG. The comparison of the results of the two distance measuring devices can show the horizontal state in the left and right directions, and then cooperate with a horizontal indication in a direction orthogonal to the direction to adjust the level of the triangular plate 9 .

A level is a common measuring tool for measuring small angles. In the machinery industry and instrument manufacturing, it is used to measure the inclination angle relative to the horizontal position, the flatness and straightness of the guide rail of machine tool equipment, the horizontal position and vertical position of equipment installation, etc. According to the shape of the level, it can be divided into two types: frame level and ruler level; according to the fixing method of the level, it can be divided into: adjustable level and non-adjustable level.

The spirit level is mainly used to test the straightness of guide rails of various machine tools and other types of equipment and the horizontal and vertical positions of equipment installation. It can also be applied to the measurement of small angles and working surfaces with V-shaped grooves. It can also measure the installation parallelism of cylindrical workpieces, as well as the horizontal and vertical positions of the installation.

In some applications that require high precision, an electronic level can also be used.

This plan focuses on the use of a low-cost level with a level tube as the basic component. The level tube is made of glass. The inner wall of the level tube is a curved surface with a certain radius of curvature. The tube is filled with liquid. When the level works When tilting occurs, the air bubble in the vial moves to the raised end of the level, thereby determining the position of the horizontal plane. The larger the radius of curvature of the inner wall of the vial, the higher the resolution, and the smaller the radius of curvature, the lower the resolution. Therefore, the radius of curvature of the vial determines the accuracy of the level.

Based on the foregoing description, in this solution, the use of the spirit level 1 with the rangefinder will be better. Therefore, the spirit level 1 is a bubble spirit level, and is a cylindrical spirit level. Its axis is perpendicular to the axis of the horizontal shaft and cooperates with each other , the level of the triangle plate 9 can be adjusted.

The tripod generally contains a lifting structure, which generally matches the central axis of the tripod. This program adopts screw adjustment. Therefore, in the structure shown in Figure 1, the triangular plate 9 has a central hole, and an adjusting nut 8 is equipped on the central hole. , The accuracy of thread adjustment is very high, which can ensure the accuracy requirements of instrument adjustment.

Furthermore, correspondingly, the bracket 2 is assembled on the triangular plate 9 through the adjusting screw 7 matched with the adjusting nut 8 , wherein the adjusting screw is a vertical rod.

Further, the legs of the tripod are legs whose length can be adjusted. In the structure shown in FIG. 1 , a threaded adjustment structure is also used, such as the matching structure of the adjusting nut 12 and the adjusting screw 13 shown in the figure.

Claims (5)

1. a total station prism, comprising support (2) and the reflecting prism (5) on this support (2) by horizontal rotating shaft device, it is characterized in that, also comprises: A tripod, the triangular plate (9) on the tripod is used as a carrier plate to place the support (2), and a level (1) is provided on the triangular plate (9); The distance measuring device is arranged on the side of the support (2), the distance measuring head is downward, and is located on the axis of the horizontal rotating shaft; and The display screen (6) is arranged on the support (2), connected with the distance measuring device for outputting the distance measurement result. 2. total station prism according to claim 1, is characterized in that, described ranging device has two, and each side is arranged on the support (2) one by one. 3. The total station prism according to claim 2, wherein the level is a bubble level and a cylinder level, the axis of which is perpendicular to the axis of the horizontal rotating shaft. 4. according to the arbitrary described total station prism of claim 1 to 3, it is characterized in that, described triangular plate (9) has central hole, is equipped with adjusting nut (8) on this central hole; Correspondingly, the bracket (2) is assembled on the triangular plate (9) through the adjusting screw (7) matched with the adjusting nut (8), wherein the adjusting screw is a vertical rod. 5. The total station prism according to claim 4, wherein the legs of the tripod are legs whose length can be adjusted.