Centering device for cadastral surveying and mapping

Abstract

The invention discloses a cadastral surveying and mapping centering device, relates to the technical field of cadastral surveying and mapping centering, and is used for solving the problem that a surveying and mapping head cannot realize stable and long-term position adjustment through a simple adjustment mode during cadastral surveying and mapping centering operation. After the exhibition stand is exhibited, the balance weight ball freely falls, the telescopic rod is dragged to unfold, meanwhile, the mounting plate on the sleeve is driven to move, the leveling work of the mounting plate on the top of the exhibition stand is completed by matching with the gravity action of the balance weight ball, and then a second rotating column located at the bottom of the exhibition stand is rotated by utilizing standard column comparison and adopting a diagonal fixing mode; the bottom of the mounting plate is abutted through the supporting ball on the top of the second rotating column, follow-up continuous movement of the mounting plate is avoided, centering adjustment of the surveying and mapping head on the mounting plate is achieved, the overall cadastre surveying and mapping centering mode is simple, and operation is durable and stable.

Description

Technical Field

[0001] The invention relates to the technical field of cadastral surveying and mapping centering, in particular to a cadastral surveying and mapping centering device. Background Art

[0002] With engineering survey as the background, based on the measurement principle of laser rangefinder, by adopting the integrated technical design concept of "laser rangefinder + precision amplification device + display screen", an efficient centering rod that is convenient for accurate height measurement is designed. By improving the centering rod to improve the high measurement accuracy of the prism, the accuracy of the elevation in the entire measurement process is improved. Without changing the structure of the total station, the accuracy of the observation value itself is improved, and the requirements of construction layout, leveling, topographic mapping and layout of image control points are further met;

[0003] Usually, the centering rod will be equipped with a corresponding bracket. For example, the patent "A Cadastral Surveying and Mapping Centering Device" with the publication number CN116858203A mentions that by rotating the knob, the adjusting screw is driven to rotate in the vertical slot, and the guide slide plays a limiting and guiding role on the lifting slider. The lifting slider moves up and down inside the guide slide, thereby adjusting the level of the surveying head, facilitating the adjustment of the angle, and ensuring the stability and accuracy of the movement. At the same time, the protrusion abuts against the baffle, and the support block is extended, positioned and retracted through the protrusion of the turntable; however, the weight of the surveying head and long-term contact friction can easily cause wear at the connection between the two, affecting subsequent adjustments and the stable placement of the overall surveying head;

[0004] To this end, we propose a cadastral surveying and centering device. Summary of the invention

[0005] The object of the present invention is to provide a cadastral surveying and mapping centering device to solve the problem in the above-mentioned background technology that during the cadastral surveying and mapping centering operation, the surveying head cannot achieve stable and long-term position adjustment through a simple adjustment method.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cadastral surveying and mapping centering device, comprising a placing frame and supporting legs, the side wall of the placing frame is evenly rotatably connected to the supporting legs, the placing frame is slidably connected to a slide, one side of the slide is fixed with a placing plate by bolts, and one side of the placing plate is fixed with a storage box by bolts;

[0007] A gravity centering mechanism is installed in the storage box, and the gravity centering mechanism includes a booth, a sleeve, a mounting plate and a telescopic rod. The booth is installed in the storage box, and a sleeve is fixed to the top of the booth through a bracket. A movably connected telescopic rod is sleeved in the sleeve, and one end of the telescopic rod passes through the booth and is fixed with a counterweight ball by spot welding.

[0008] Furthermore, a swivel column 1 is installed on one side of the placement rack, one end of the swivel column 1 passes through the placement rack and abuts against one side of the slide, and the swivel column 1 is threadedly connected to the placement rack.

[0009] Furthermore, the inner walls on both sides of the storage box are rotatably connected with a rotating arm 1 and a rotating arm 2 through bearings, the rotating arm 1 and the storage box are fixed with a limiting column by spot welding, and one end of the rotating arm 1 and the rotating arm 2 are movably connected to both sides of the exhibition stand.

[0010] Furthermore, arc grooves are symmetrically provided on the inner walls on both sides of the booth, and the limit rods are symmetrically rotatably connected on both sides of the booth. A pull rod is installed on one side of the booth, one end of the pull rod passes through one side of the booth and is clamped with the limit rod on the inner side of the arc groove, and springs are installed on the inner walls on both sides of the booth, and one side of the spring is connected to the outer wall of the limit rod.

[0011] Furthermore, two swivel columns are symmetrically installed on both sides of the bottom of the booth, one end of the two swivel columns penetrates the booth and is fixed with a supporting ball by adhesion, and the two swivel columns are threadedly connected to the booth.

[0012] Furthermore, a marking post is symmetrically fixed on the top of the booth and on one side of the mounting plate, and scales are evenly marked on the marking post.

[0013] The cadastral surveying and mapping centering method is:

[0014] Adjust the horizontal angle height, unfold the support legs on the placement rack, rotate the rotating column one on the placement rack, stretch the slide and rotate it again one at the same time to fix the slide on the placement rack;

[0015] Correct the horizontal centering. Pull the booth in the storage box and after the first and second arms rotate 90°, the upper limit column on the first arm is locked with the upper groove of the limit rod. At the same time, the counterweight ball on the telescopic rod at the bottom of the booth falls down while the booth rotates. Make sure that the entire telescopic rod connection mounting plate remains vertical to the ground. At this time, observe the bubble box on the top of the booth to see if the center bubble is located on the center side of the box body.

[0016] When the bubble is not on the center side of the box body, pull out the marking posts on both sides of the top of the booth, make the eyes, marking posts and mounting plate flush, record the height of the top edge of the mounting plate on the marking posts, rotate the second rotating post at the bottom of the booth away from the marking post, the rise of the second rotating post makes the end support ball contact the bottom of the mounting plate, and finally abut against the bottom of the mounting plate, then rotate the second rotating post at the bottom of the booth on the corresponding side of the marking post again, push the mounting plate to rotate after the support ball contacts the mounting plate, until the height of one side of the mounting plate is flush with the recorded side of the marking post, and complete the angle adjustment of the mounting plate on one side. Similarly, rotate the second rotating post at the bottom of the booth on the other side of the marking post until the support ball contacts the bottom of the mounting plate. After completing the angle adjustment of the mounting plate, fix the surveying head on the mounting plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, the pull-out exhibition stand design of the storage box facilitates surveying and mapping while avoiding collision and damage of surveying and mapping equipment on the mounting plate during transportation. At the same time, the storage box is easy to disassemble and assemble, and with the foldable supporting legs, it is convenient to carry and flexible to work;

[0019] 2. In the present invention, during the rotation of the booth, the upper limit column located on the rotating arm 1 is automatically clamped into the limit rod on the outer wall of the booth to complete the locking of the booth. At the same time, the outer limit rod of the booth can be rotated by manually pulling the pull rod. After the limit rod is separated from the rotating arm 1, the entire booth is automatically retracted. The booth is easy to pull out and flexible to assemble.

[0020] 3. In the present invention, the free fall of the counterweight ball after the exhibition is utilized to drag the telescopic rod to expand and drive the mounting plate on the sleeve to move at the same time, and the gravity of the counterweight ball is cooperated to complete the leveling work of the mounting plate on the top of the exhibition stand. Then, by comparing with the standard column, the diagonal fixing method is adopted to rotate the second rotating column at the bottom of the exhibition stand, and the support ball on the top of the second rotating column is used to complete the bottom abutment of the mounting plate, so as to avoid the continuous movement of the subsequent mounting plate and realize the centering adjustment work of the surveying head on the mounting plate. The overall cadastral surveying and mapping centering method is relatively simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the cadastral surveying and mapping centering device of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of the storage rack of the cadastral surveying and mapping centering device of the present invention;

[0023] Figure 3 It is a schematic diagram of the gravity centering mechanism in the storage box of the present invention;

[0024] Figure 4 This is a schematic diagram of the main structure of the gravity centering mechanism in the storage box of the present invention;

[0025] Figure 5 It is a schematic diagram of the gravity centering mechanism on the first rotating arm and the second rotating arm of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection structure between the mounting plate and the limiting rod in the storage box of the present invention;

[0027] Figure 7 It is a schematic diagram of the installation structure of the second rotating column on the exhibition stand of the present invention.

[0028] In the figure: 1. placement rack; 2. support leg; 3. swivel column 1; 4. slide; 5. placement plate; 6. storage box; 7. swivel arm 1; 8. swivel arm 2; 9. limit column; 10. gravity centering mechanism; 101. exhibition stand; 102. sleeve; 103. mounting plate; 104. telescopic rod; 105. counterweight ball; 11. arc groove; 12. limit rod; 13. pull rod; 14. spring; 15. swivel column 2; 16. support ball; 17. marking column. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-7 , the present invention provides a technical solution:

[0031] Embodiment 1: The equipment for cadastral surveying and mapping mainly consists of a lower bracket and an upper surveying and mapping head. The legs of the bracket are usually designed to be telescopic, so that the overall height can be adjusted adaptively. The level center of the level on the surveying and mapping head can also be adjusted to the middle center, so that the entire cadastral surveying and mapping centering device is level, and then the measurement is performed;

[0032] There are various ways to calibrate. The most common method is to use a total station to calibrate. Align the vertical wires of the two total stations to the centering rod bracket to make the centering rod bracket vertical. Then use the correction needle to adjust the bubble to the center. Another method is to adjust directly through the tripod. Insert the centering rod into the center of the tripod, plug the center hole with a towel, first level the centering rod from east to west, adjust the rod position according to the center bubble position, use the correction needle to adjust the correction screw under the circular level bubble, adjust the bubble box center halfway, then rotate 180° and adjust again. Repeat the adjustment several times to complete the east-west adjustment of the centering rod, and then adjust the centering rod from north to south.

[0033] In addition, calibration is performed by hanging method, such as Figure 1 As shown, when there is no centering rod for centering surveying, the exhibition stand 101 on the gravity centering mechanism 10 can be directly pulled out from the storage box 6, which is more convenient for surveying;

[0034] The support legs 2 are installed on the entire placement frame 1, and the length of the support legs 2 can be adjusted automatically. A slide 4 is slidably connected to the placement frame 1, and the position of the slide 4 is adjusted by a rotary column 3. The rotary column 3 is threadedly connected to the placement frame 1. When the rotary column 3 is rotated, the side wall of the slide 4 can be abutted, so as to lock the slide 4 on the placement frame 1. A placement plate 5 is fixed on one side of the slide 4 by bolts, and a storage box 6 can be bolted on the placement plate 5, and the lateral position can be adjusted. At the same time, a group of storage boxes 6 can be installed and locked at the same time, so that operators can install various surveying and mapping equipment;

[0035] The gravity centering mechanism 10 is installed in the storage box 6, such as Figure 3 As shown, the 90° rotating structure is convenient for storing surveying and mapping equipment. When not in use, the plug plate can be used to close one side of the storage box 6, and then the storage box 6 can be removed from the placement plate 5 as a whole, which is convenient for storing surveying and mapping equipment.

[0036] The inner walls of both sides of the storage box 6 are symmetrically connected with a rotating arm 1 7 and a rotating arm 2 8, and one end of the rotating arm 1 7 and the rotating arm 2 8 is movably connected to both sides of the exhibition stand 101. When in use, the exhibition stand 101 is pulled out of the storage box 6 similar to a drawer. The operator actively pulls the exhibition stand 101 out from one side of the storage box 6 obliquely upward, and after the rotating arm 1 7 rotates a certain angle;

[0037] like Figure 5 As shown, the upper limit post 9 of the rotating arm 1 7 is gradually stuck on the limit rod 12 of the side wall of the exhibition stand 101, so that the combination of the rotating arm 1 7 and the rotating arm 2 8 is stable, and the exhibition stand 101 is fixed outside the storage box 6. When the exhibition stand 101 needs to be sent back to the storage box 6, Figure 6 As shown, pull rods 13 are slidably connected to the inner walls of both sides of the booth 101, and the protruding sides of the limiting rods 12 on both sides of the booth 101 penetrate the arc grooves 11 and are slidably connected to one side of the pull rods 13, and the protruding sides of the limiting rods 12 located inside the booth 101 are also connected to springs 14;

[0038] When the limit rod 12 needs to be rotated to disengage from the abutment of the counter-rotating arm 7, the pull rod 13 located outside the exhibition stand 101 is pulled, and the sliding of the pull rod 13 pulls the limit rod 12 to rotate. At this time, the entire exhibition stand 101 is manually rotated and retracted into the storage box 6 for storage;

[0039] The design of the pull-out booth 101 facilitates surveying and mapping while preventing surveying and mapping equipment on the mounting plate 103 from being damaged by collision during transportation. Meanwhile, the storage box 6 is easy to disassemble and assemble, and the foldable support legs 2 facilitate transportation and make work flexible.

[0040] Embodiment 2: The cadastral surveying and centering equipment of the present invention adopts a gravity hanging structure, such as Figure 5As shown, a sleeve 102 is installed on the top of the exhibition stand 101, and a telescopic rod 104 is rollingly connected to the sleeve 102, that is, the ball on the telescopic rod 104 is embedded and connected with the sleeve 102, and can be rotated and adjusted at multiple angles. Usually, the friction between the ball on the telescopic rod 104 and the sleeve 102 is avoided to be large, and oiling operation can be performed before use;

[0041] After the entire exhibition stand 101 is pulled out of the storage box 6, the originally retracted telescopic rod 104 is pulled to expand by the gravity of the counterweight ball 105, and the mounting plate 103 fixedly connected to the other end of the telescopic rod 104 rotates in the opposite direction according to the rotation of the counterweight ball 105. When the support legs 2 on the entire display stand 1 are completely horizontal on the ground, the center bubble position is observed through the bubble box on the top of the storage box 6 to roughly understand the deflection angle of the display stand 1;

[0042] Since the telescopic rod 104 on the exhibition stand 101 is vertical to the ground after being affected by gravity for a period of time, at this time, no matter which direction the exhibition stand 101 deflects, the telescopic rod 104 connected to the weight ball 105 is vertical. Based on this, the mounting plate is horizontal to the ground at this time, so the mapping head can be fixed to the mounting plate 103. However, considering the shaking of the mounting plate 103 and the uneven weight of the mapping head, the mounting plate 103 is still fixed on the top of the exhibition stand 101 at this time;

[0043] like Figure 3 As shown, a column 17 is symmetrically installed in front of the mounting plate 103 at the top of the booth 101. The column 17 has a scale. Since the column 17 is perpendicular to the booth 101, if the booth 101 is tilted, there is an angle between the entire column 17 and the mounting plate 103. After the mounting plate 103 is stationary, the scale value on the column 17 at the highest point of the edge of the mounting plate 103 is observed at a right angle on one side of the booth 101, and then the corresponding rotating column 15 at the bottom of the booth 101 is rotated, as shown in FIG. Figure 7 As shown, the second rotating column 15 is located at the top of the exhibition stand 101 and is equipped with a supporting ball 16. The supporting ball 16 is made of elastic material. When the second rotating column 15 rotates, the supporting ball 16 is pushed to the bottom of one side of the mounting plate 103, and after contacting the mounting plate 103, the mounting plate 103 is slightly flipped.

[0044] Wait for the mounting plate 103 to be still and then observe the scale on the mark column 17 of the edge of the mounting plate 103 again. At the same time, rotate the adjacent side rotation column 15. After the support ball 16 contacts the bottom of the mounting plate 103, continue to apply force to drive the mounting plate 103 to rotate until the height of the edge side is level with the initial measurement position. Similarly, adjust the height of the mounting plates 103 on the other two sides to complete the fixation of the four corners of the mounting plate 103. At this time, install the surveying head on the mounting.

[0045] The working process and principle of the present invention are as follows:

[0046] Adjust the horizontal angle height, unfold the support legs 2 on the placement rack 1, and rotate the rotating column 1 3 on the placement rack 1, stretch the slide 4 and rotate the rotating column 1 again to fix the slide 4 on the placement rack 1;

[0047] Correct the horizontal centering. Pull the exhibition stand 101 in the storage box 6. After the rotating arm 1 7 and the rotating arm 2 8 rotate 90°, the upper limit column 9 on the rotating arm 1 7 is locked with the upper groove of the limit rod 12. At the same time, the counterweight ball 105 on the telescopic rod 104 at the bottom of the exhibition stand 101 falls down during the rotation of the exhibition stand 101. Ensure that the entire telescopic rod 104 connected to the mounting plate 103 is kept vertical to the ground. At this time, observe the bubble box on the top of the exhibition stand 101 to see if the central bubble is located on the center side of the box body.

[0048] When the bubble is not on the center side of the box body, pull out the marking posts 17 on both sides of the top of the booth 101, and make the eyes, marking posts 17 and mounting plate 103 flush. Record the height of the top edge of the mounting plate 103 on the marking post 17 at this time, and rotate the second rotating post 15 at the bottom of the booth 101 away from the marking post 17. The rise of the second rotating post 15 makes the end support ball 16 contact the bottom of the mounting plate 103 and finally abut against the bottom of the mounting plate 103. Then, rotate the second rotating post 15 at the bottom of the booth 101 on the corresponding side of the marking post 17 again, and push the mounting plate 103 to rotate after the support ball 16 contacts the mounting plate 103 until the height of one side of the mounting plate 103 is flush with the recorded side of the marking post 17, completing the angle adjustment of the mounting plate 103 on one side. Similarly, rotate the second rotating post 15 at the bottom of the booth 101 on the other side of the marking post 17 until the support ball 16 contacts the bottom of the mounting plate 103. After completing the angle adjustment of the mounting plate 103, fix the surveying head on the mounting plate 103.

[0049] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cadastral surveying and centering device, comprising a placing frame (1) and a supporting leg (2), wherein the side wall of the placing frame (1) is evenly rotatably connected to the supporting leg (2), characterized in that: The placement rack (1) is slidably connected to a slide table (4), one side of the slide table (4) is fixed with a placement plate (5) by bolts, and one side of the placement plate (5) is fixed with a storage box (6) by bolts; A gravity centering mechanism (10) is installed in the storage box (6), and the gravity centering mechanism (10) comprises a display stand (101), a sleeve (102), a mounting plate (103) and a telescopic rod (104). The display stand (101) is installed in the storage box (6), the top of the display stand (101) is fixed with the sleeve (102) via a bracket, a movably connected telescopic rod (104) is sleeved in the sleeve (102), one end of the telescopic rod (104) passes through the display stand (101) and is fixed with a counterweight ball (105) via spot welding.

2. A cadastral surveying and centering device according to claim 1, characterized in that: A swivel column (3) is installed on one side of the placement rack (1), one end of the swivel column (3) passes through the placement rack (1) and abuts against one side of the slide (4), and the swivel column (3) is threadedly connected to the placement rack (1).

3. A cadastral surveying and centering device according to claim 2, characterized in that: The inner walls of both sides of the storage box (6) are rotatably connected with a first rotating arm (7) and a second rotating arm (8) via bearings; the first rotating arm (7) and the storage box (6) are fixed with a limiting column (9) via spot welding on the opposite surface thereof; and one end of the first rotating arm (7) and the second rotating arm (8) are movably connected to both sides of the exhibition stand (101).

4. A cadastral surveying and centering device according to claim 3, characterized in that: The inner walls on both sides of the exhibition stand (101) are symmetrically provided with arc grooves (11), and the two sides of the exhibition stand (101) are symmetrically rotatably connected to the limit rod (12). A pull rod (13) is installed on one side of the exhibition stand (101), and one end of the pull rod (13) passes through one side of the exhibition stand (101) and is clamped with the limit rod (12) located on the inner side of the arc groove (11). Springs (14) are installed on the inner walls on both sides of the exhibition stand (101), and one side of the spring (14) is connected to the outer wall of the limit rod (12).

5. A cadastral surveying and centering device according to claim 4, characterized in that: The bottom of the exhibition stand (101) is symmetrically provided with two swivel columns (15), one end of which passes through the exhibition stand (101) and is fixed with a supporting ball (16) by adhesion, and the two swivel columns (15) are threadedly connected to the exhibition stand (101).

6. A cadastral surveying and centering device according to claim 5, characterized in that: A marking post (17) is symmetrically fixed on the top of the exhibition stand (101) and on one side of the mounting plate (103), and scales are evenly marked on the marking post (17).

7. A cadastral surveying and centering device according to claim 6, characterized in that: The cadastral surveying and mapping centering method is: To adjust the horizontal angle height, unfold the support legs (2) on the placement rack (1), rotate the rotating column (3) on the placement rack (1), stretch the slide (4) and rotate the rotating column (3) again, so as to fix the slide (4) on the placement rack (1); To correct the horizontal centering, pull the exhibition stand (101) in the storage box (6), and after the rotating arm 1 (7) and the rotating arm 2 (8) rotate 90 degrees, the upper limit column (9) on the rotating arm 1 (7) is locked with the upper groove of the limit rod (12). At the same time, the counterweight ball (105) on the telescopic rod (104) at the bottom of the exhibition stand (101) falls down during the rotation of the exhibition stand (101), and the entire telescopic rod (104) connected to the mounting plate (103) is kept vertical to the ground. At this time, observe the bubble box on the top of the exhibition stand (101) to see whether the central bubble is located on the center side of the box body; When the bubble is not at the center of the box body, the marking posts (17) on both sides of the top of the stand (101) are pulled out, and the eyes, marking posts (17) and the mounting plate (103) are flush. The height of the top edge of the mounting plate (103) on the marking posts (17) is recorded, and the second rotating post (15) at the bottom of the stand (101) is rotated away from the marking post (17). The rise of the second rotating post (15) makes the end support ball (16) contact the bottom of the mounting plate (103) and finally abut against the bottom of the mounting plate (103). Then, the marking post (17) is rotated again to the corresponding side. Rotate the second post (15) at the bottom of the exhibition stand (101), and push the installation plate (103) to rotate after the support ball (16) contacts the installation plate (103), until the height of one side of the installation plate (103) is flush with the recording side of the mark post (17), and the angle adjustment of the single-side installation plate (103) is completed. Similarly, rotate the mark post (17) at the bottom of the exhibition stand (101) by two rotations until the support ball (16) contacts the bottom of the installation plate (103). After the angle adjustment of the installation plate (103) is completed, fix the surveying head on the installation plate (103).

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