High-precision positioning marker post for land planning

Abstract

The utility model discloses a high-precision positioning marker post for land planning, which relates to the technical field of land surveying and mapping and planning and comprises a base, a lower marker post, an upper marker post, a fixing bolt, a top cover and four protective plates hinged to the base. A cushion block is arranged below the base to enhance stability; the upper marker post and the lower marker post are marked with scale marks, and accurate height adjustment and locking are achieved through the fixing bolts. And the top cover and the protection plate are stably closed through a dovetail groove / block structure to form a totally-closed protection space, so that the scales are prevented from being damaged. And the bolt holes are formed in the protection plate, so that the fixing bolts can be directly operated in a closed state, and the use convenience is improved. And the marker post is convenient to carry and move through the handle on the top cover. According to the utility model, stable support, adjustable height and all-directional protection are integrated, so that the measurement accuracy and the durability and portability of the marker post are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to land surveying and mapping and planning technical field, specifically is high accuracy positioning flagpole for land planning. BACKGROUND

[0002] In the field of land planning, topographic surveying and mapping and engineering construction, positioning flagpole is the basic and essential measuring tool, often used for identifying point, assisting elevation reading and straight line positioning. The existing flagpole is mostly single integral type or simple telescopic structure, which gradually exposes many deficiencies in actual use: poor stability. The traditional flagpole is directly erected on the ground, and the contact area of the bottom with the ground is limited, which is easy to be tilted by wind force, touching on soft, inclined or uneven ground, directly affecting the measurement accuracy and operation efficiency. The scale line of the flagpole is directly exposed, which is easy to be worn, bumped, polluted or damaged by human factors in complex outdoor environment, resulting in blurred scale, affecting the reading accuracy, occupying large space during naked storage and transportation, and the pole body is easy to scratch, bend or scale damage, reducing the service life. Therefore, a new type of positioning flagpole for land planning with high stability, all-round protection and portability is needed to meet the comprehensive needs of modern surveying and mapping operation for accuracy, durability and operation convenience. SUMMARY

[0003] To solve the above problems, i.e. to solve the problems raised in the above background technology, the utility model provides a high-precision positioning flagpole for land planning, which comprises a base, a lower flagpole installed on the base, an upper flagpole slidably installed in the lower flagpole, a fixing bolt for fixing the upper flagpole rotatably connected to the side wall of the lower flagpole, a top cover installed on the upper flagpole, a protective plate hingedly connected to each side wall of the base, and a scale line provided on the lower flagpole and the upper flagpole.

[0004] Further, a dovetail groove is formed in each side wall of the top cover, and a dovetail block matched with the dovetail groove is installed on the upper end of the protective plate.

[0005] Further, a bolt hole is formed in the protective plate in the direction of the fixing bolt, and the fixing bolt can further tighten the upper flagpole through the bolt hole.

[0006] Further, a handle is installed on the upper wall surface of the top cover.

[0007] Further, a plurality of pads are installed on the lower wall surface of the base.

[0008] The utility model discloses a beneficial technical effect is: through setting up the heavy base and the cushion block of bottom, the stability of sign pole and ground has been increased significantly, cooperate with the guard board and prevent sign pole to fall in the measuring process, ensure the accuracy of survey data, adopt the sleeve type sliding structure of upper and lower sign pole, and cooperate the fixed bolt of rotatable on side wall, can realize the continuous, accurate adjustment and firm locking of height, satisfy the demand of height to different measurement scene, the guard board of four sides articulates with the top cover and base together constitutes a closed protection space, can be protected completely to fragile scale line and top, effectively prevent its wear and tear, knock, pollution or human damage when storing or transporting, guarantee the clearness of scale and the long -term durable of sign pole. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 The utility model discloses a structure schematic drawing shows that the utility model discloses a structure schematic diagram;

[0010] Figure 2 The utility model discloses a side view shows that the utility model discloses a side view;

[0011] Figure 3 The utility model discloses a top view shows that the utility model discloses a top view.

[0012] Fig. 1, base;2, lower sign pole;3, upper sign pole;4, top cover;5, handle;6, guard board;7, dovetail block;8, dovetail groove;9, cushion block;10, fixed bolt;11, bolt hole. DETAILED DESCRIPTION

[0013] The preferred embodiments of the utility model are described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the utility model, and are not intended to limit the protection scope of the utility model.

[0014] The utility model discloses a high accuracy positioning sign pole for land planning, including one heavy base 1 for providing stable support. The lower wall surface of base 1 is fixedly installed with a plurality of cushion blocks 9, the material of cushion block 9 can select wear -resisting rubber or hard plastic, its function is further increase the friction of base 1 bottom surface, and enhance the stability of whole.

[0015] The upper surface center of base 1 is fixedly installed with lower sign pole 2, and lower sign pole 2 is a hollow tubular structure. A upper sign pole 3 is slidably sleeved in lower sign pole 2, and the upper sign pole 3 can slide up and down in lower sign pole 2 to adjust the overall height. The side wall of lower sign pole 2 is rotatably connected with a fixed bolt 10, and when the upper sign pole 3 is adjusted to the required height, the fixed bolt 10 can be tightened to tightly abut against the upper end of the upper sign pole 3, so that the upper sign pole 3 is firmly locked.

[0016] The top end of upper sign pole 3 is fixedly installed with a top cover 4, and the four side wall surfaces of top cover 4 are also provided with dovetail grooves 8. A handle 5 is installed on the upper wall surface of top cover 4 for easy lifting.

[0017] A rectangular protective plate 6 is hinged to each of the four side walls of the base 1. The four protective plates 6 can be flipped upwards to close, or they can be flipped downwards to fit against the side of the base 1. Dovetail blocks 7 are installed on each of the four protective plates 6.

[0018] Both the lower marker 2 and the upper marker 3 have clear and precise scale lines printed on their surfaces for directly reading the height of the marker extension. During measurement, ensure the ground is flat and place the positioning rod in the designated position. At this time, the protective plate 6 and the base 1 are horizontal, providing some auxiliary support and preventing swaying in the wind. The user can adjust the rod to a specific height as needed and read the scale accurately. After use, first flip the protective plate 6 to close it, loosen the fixing bolt 10, and adjust the upper rod 3 so that the dovetail blocks 7 on the protective plate 6 are all inserted into the dovetail grooves 8 on the top cover 4. For easy fixing, a bolt hole 11 is provided on one of the protective plates 6 located in the direction of the fixing bolt 10. In order not to hinder the movement of the protective plate 6, the diameter of the bolt hole 11 is much larger than the exposed length of the fixing bolt 10. After the top cover 4 and the protective plate 6 are locked, tighten the fixing bolt 10 to press it against the upper rod 3. The top cover 4 will not detach from the protective plate 6. The four protective plates 6 are closed to form a sturdy protective shell, which is easy to carry and store, reduces the impact of the rod and the wear of the scale, and effectively extends the service life of the rod. The device can be lifted away by the handle 5, making operation extremely convenient.

[0019] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0020] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0023] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A high-precision positioning benchmark for land planning, comprising a base (1), characterized in that: A lower marker (2) is installed on the base (1), and an upper marker (3) is slidably installed inside the lower marker (2). A fixing bolt (10) is screwed onto the side wall of the lower marker (2), and a top cover (4) is installed on the upper marker (3). Protective plates (6) are hinged to the four side walls of the base (1). Scale lines are provided on both the lower marker (2) and the upper marker (3). Dovetail grooves (8) are provided on the four side walls of the top cover (4), and dovetail blocks (7) are installed on the upper end of the protective plates (6). The dovetail grooves (8) match the dovetail blocks (7).

2. The high-precision positioning benchmark for land planning according to claim 1, characterized in that: Bolt holes (11) are provided on the protective plate (6) located in the direction of the fixing bolt (10).

3. The high-precision positioning benchmark for land planning according to claim 1, characterized in that: A handle (5) is installed on the upper wall of the top cover (4).

4. The high-precision positioning benchmark for land planning according to claim 1, characterized in that: Several pads (9) are also installed on the lower wall of the base (1).

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