A high-precision construction land measurement device for national land space planning

Abstract

The present invention relates to the technical field of land surveying equipment, and discloses a high-precision construction land surveying device for national land space planning, comprising a hand pole, a mounting bracket arranged on the top of the hand pole, a measuring instrument arranged on the surface of the mounting bracket, and a vertical adjustment component arranged at the bottom of the hand pole, wherein the vertical adjustment component specifically comprises a grounding sleeve sleeved on the bottom of the hand pole, a connector flexibly connected between the hand pole and the grounding sleeve, a rotating groove provided on the inner wall of the grounding sleeve, a top supporting sleeve and a push spring slidably inserted into the storage groove. The high-precision construction land surveying device for national land space planning, by providing a vertical adjustment component, even if the grounding sleeve is in an inclined state when standing on the bottom surface, the rotating platform can still keep the horizontal platform upward and parallel to the horizontal plane due to the weight, so that the hand pole can be kept in a vertical state, and the measuring instrument is also kept vertical, and the influence of the ground environment is reduced, which is conducive to improving the measurement accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of land surveying equipment, and in particular to a high-precision construction land surveying device for national land space planning. Background Art

[0002] National land space planning is an arrangement in space and time for the development and protection of the land space in a certain area, including overall planning, detailed planning and related special planning. Before planning, it is necessary to measure the shape, area and perimeter of the target area. Traditional measuring tools include tape measures and total stations, and modern electronic measuring equipment includes handheld GPS measuring instruments and drone mapping systems.

[0003] A handheld GPS measuring instrument is a portable global positioning system device, which is mainly used to measure geographic location, altitude, travel speed and other information. The handheld GPS measuring instrument determines its own position by receiving satellite signals from the earth's orbit. Generally speaking, it is necessary to receive signals from at least four satellites for three-dimensional positioning (longitude, latitude and altitude). Satellites continuously send signals containing time and location information. After receiving these signals, the handheld GPS measuring instrument calculates the distance to each satellite based on the time difference of signal propagation, and then determines its own position coordinates through triangulation.

[0004] A new land area measuring instrument is disclosed in the patent publication number CN221147579U, including: a base station, a positioning tag, and a handheld terminal. The base station and the positioning tag are respectively arranged on a base station bracket with adjustable height and the top of the positioning bracket; the base station includes a base station housing, a base station substrate arranged in the base station housing, and a base station power module, a base station GPS module, a base station UWB module, a base station antenna module, a base station wireless transmission module, and a base station main control module connected to the base station substrate; the positioning tag includes a positioning housing, a positioning substrate arranged in the positioning housing, and a positioning power module, a positioning GPS module, a positioning UWB module, a positioning antenna module, a positioning wireless transmission module, and a positioning main control module connected to the positioning substrate; the handheld terminal is used to receive and process UWB data and GPS data transmitted by the base station and the positioning tag. The utility model is based on GPS and UWB technology and has the advantages of high-precision and high-efficiency measurement.

[0005] The prior art has the following defects:

[0006] When using a handheld GPS measuring instrument, in order to better receive signals and ensure the stability of the equipment during detection, it is equipped with a long handheld pole. The GPS device is fixed on the top of the handheld pole, and the handheld pole is inserted and placed on the bottom surface during measurement. Since the area to be measured is often undeveloped wasteland, the bottom surface is not always undulating. During measurement, the handheld pole is placed on the ground and often cannot remain vertical. The user needs to adjust it by hand, but the accuracy is poor.

[0007] Handheld GPS survey instruments usually rely on receiving signals from multiple satellites in the sky to determine the location; when the device is held vertically, the direction of its antenna can better align with the satellites for the best signal reception angle. If the device is tilted, the direction of the antenna will change, which may cause the strength of the received satellite signal to weaken;

[0008] When measuring, the point that actually needs to be measured is the position where the hand-held pole is inserted. This position is often drawn or marked in advance. When the hand-held pole is tilted, it will cause an error between the GPS device and the point where the hand-held pole is inserted. According to trigonometric function analysis, the longer the hand-held pole is, the greater the error, which will cause the measurement accuracy of the GPS device to decrease. At the same time, when it is necessary to measure the three-dimensional area (the surface area of ​​the earthwork), the GPS device height measurement will also have errors, which is not conducive to the development of later planning work. Summary of the invention

[0009] In view of the problem in the prior art that handheld GPS measuring equipment often cannot maintain a vertical state, a high-precision construction land measuring device for national land space planning is proposed.

[0010] The present application provides a high-precision construction land measurement device for national land space planning, the purpose of which is to keep a handheld GPS measurement device in a vertical state at all times during measurement.

[0011] The technical scheme of the present invention is: a high-precision construction land measurement device for national land space planning, comprising a hand rod, a mounting bracket arranged on the top of the hand rod, a measuring instrument arranged on the surface of the mounting bracket, and a vertical adjustment component arranged at the bottom of the hand rod, wherein the vertical adjustment component specifically comprises a grounding sleeve sleeved on the bottom of the hand rod, a connecting piece flexibly connected between the hand rod and the grounding sleeve, a rotating groove provided on the inner wall of the grounding sleeve, a rotating table rotatably installed on the inner side of the rotating groove, a receiving groove provided on the top of the rotating table, a top supporting sleeve and a pushing spring slidably inserted into the inside of the receiving groove, a pushing groove provided on the outside of the top supporting sleeve, a sliding hole provided on the outside of the rotating table, and a sliding rod slidably inserted into the inside of the sliding hole;

[0012] The rotating groove is spherical, and the center of the rotating groove is located on the central axis of the grounding sleeve. The diameter of the rotating groove is larger than the inner diameter of the grounding sleeve. The rotating table is spherical. A horizontal platform is arranged outside the rotating table. Under the influence of weight, the horizontal platform is always located above the rotating table. The storage groove is annular. The top supporting sleeve extends out of the storage groove. The top supporting sleeve is located below the hand rod. The push spring is located below the top supporting sleeve. The sliding hole is connected with the storage groove. One end of the sliding rod extends into the push groove, and the other end is in contact with the inner wall of the rotating groove. The upper and lower sides of the push groove are both inclined.

[0013] Furthermore, the mounting bracket is L-shaped and is composed of a transverse plate and a vertical plate, wherein the transverse plate is connected to the hand rod and extends horizontally out of the upper surface of the hand rod, and the vertical plate is divided into an upper and lower part, the lower section of the vertical plate and the connecting part of the transverse plate are inclined toward the hand rod, and the top of this section extends to above the top surface of the hand rod, the upper section of the vertical plate is perpendicular to the top surface of the hand rod, and the measuring instrument is fixed to the upper section of the vertical plate.

[0014] Furthermore, the hand rod is a telescopic rod, and a fixing buckle is installed between two sections of the telescopic rod. A height marking line is engraved on the surface of the upper section of the telescopic rod, and the value of the height marking line represents the distance from the top of the mounting bracket to the bottom of the vertical adjustment component.

[0015] Furthermore, the connecting member specifically includes a clamping ring fixedly mounted on the top of the grounding sleeve, a fixing platform arranged on the outside of the hand rod, a fixing screw sleeve threadedly sleeved on the outside of the hand rod, and an elastic membrane installed between the hand rod and the grounding sleeve;

[0016] The elastic membrane is annular, and the inner circular edge of the elastic membrane is clamped between the fixed platform and the fixed screw sleeve, and the outer circular edge is clamped between the grounding sleeve and the clamping ring. Anti-slip patterns that bite each other are arranged between the fixed platform and the fixed screw sleeve, and between the grounding sleeve and the clamping ring.

[0017] Furthermore, the upper surface of the fixing platform is higher in level than the upper surface of the grounding sleeve.

[0018] Furthermore, a height control component is provided in the vertical adjustment component, and the height control component specifically includes a base clamped on the outside of the ground sleeve, a through hole opened at the center of the horizontal platform on the top of the rotating table, a limit platform and a positioning rod plugged into the through hole, a plug hole opened at the top of the positioning rod, two side grooves symmetrically opened on the outside of the positioning rod, a fixing plate slidably installed in the side groove, an extension rod arranged on the side of the fixing plate close to the plug hole, a pressing rod slidably inserted in the plug hole, two retracting grooves symmetrically opened on the outside of the pressing rod, a pushing plate rotatably installed in the retracting groove, and a reset spring sleeved on the bottom of the pressing rod;

[0019] The storage groove surrounds the outside of the through hole, and an arc-shaped groove is arranged on the top surface of the base. The through hole passes through the rotating table from top to bottom, and the limit table is fixedly installed in the top support sleeve. The bottom end of the positioning rod passes through the through hole and extends into the base. The side groove is connected with the insertion hole, the fixing plate fits with the inner wall of the through hole, the extension rod extends into the insertion hole, and the upper end of the pushing rod extends out of the insertion hole. The two pushing plates are distributed in an "eight" shape, and the bottom end of the pushing plate presses on the top of the extension rod.

[0020] Furthermore, an edge of one side of the bottom of the push plate away from the folding groove is configured to be arc-shaped.

[0021] Furthermore, a level detection device is arranged on the outside of the hand bar, and the level detection device specifically comprises a fixing sleeve sleeved on the outside of the hand bar, a fixing frame fixed on the outside of the fixing sleeve, and a level meter plugged into the inside of the fixing frame.

[0022] Furthermore, the orientation of the level is the same as the front orientation of the measuring instrument.

[0023] Beneficial effects of the present invention:

[0024] 1. By setting the vertical adjustment component, the weight of the side of the rotating table with the horizontal platform is less than the weight of the side without the horizontal platform. In this way, even if the grounding sleeve is in a tilted state when standing on the ground, the rotating table can still keep the horizontal platform upward and parallel to the horizontal plane due to the weight. When the hand rod is pressed down, it falls on the top of the top supporting sleeve. The sliding rod first fixes the rotating table, and then the hand rod is pushed down manually to fully fit the top surface of the top supporting sleeve. In this way, the hand rod can remain in a vertical state, and the measuring instrument also remains vertical, which reduces the influence of the ground environment and is conducive to improving the measurement accuracy.

[0025] 2. By installing the measuring instrument on an L-shaped mounting bracket and designing the shape of the mounting bracket, the bending part of the mounting bracket has a certain elastic activity space, and the inclined part can swing up and down, offsetting the impact shock caused by the contact between the vertical adjustment component and the ground and the contact between the hand rod and the top support sleeve, thereby protecting the measuring instrument.

[0026] 3. By using the elastic membrane to connect the hand rod and the grounding sleeve, the two are connected together and have a certain degree of freedom of movement, so that the state of the grounding sleeve will not affect the hand rod, which is convenient for adjusting the state of the hand rod. At the same time, the elastic membrane can prevent mud and dust from entering the grounding sleeve, maintaining the flexibility of the turntable rotation.

[0027] 4. By setting the height control component, when the grounding sleeve is tilted, the deflection of the rotating table remains in the original state, the positioning rod remains vertical, and the positioning rod slides on the arc surface of the base and is lifted upward, so that the displacement distance of the limit table and the top support sleeve is reduced, and the relative displacement between the hand rod and the grounding sleeve is reduced. In this way, the error caused by the shortening of the distance from the rotating table to the ground due to the tilt of the grounding sleeve can be offset, avoiding errors in measuring three-dimensional areas.

[0028] 5. By setting up a horizontal detection device, during the detection, the hand rod is placed on the ground, and the position of the bubble in the spirit level is observed. By seeing whether it is centered, it can be judged whether the state of the hand rod is vertical. In this way, it can be judged simply and quickly, and when the vertical adjustment component fails, it can be discovered and repaired in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional diagram of a high-precision construction land measurement device for national land space planning of the present invention;

[0030] Figure 2 This is an installation diagram of the measuring instrument of the present invention;

[0031] Figure 3 It is a schematic diagram of the vertical adjustment assembly of the present invention;

[0032] Figure 4 This is a disassembly diagram of the connector of the present invention;

[0033] Figure 5 This is a schematic diagram of the interior of the grounding sleeve of the present invention;

[0034] Figure 6 It is a schematic diagram of the height control component of the present invention;

[0035] Figure 7 This is a disassembled diagram of the height control assembly of the present invention;

[0036] Figure 8 This is a disassembled diagram of the internal components of the positioning rod of the present invention;

[0037] Fig. 9 It is a schematic diagram of the top pressure rod of the present invention;

[0038] Fig.10 This is a cross-sectional view of the interior of the ground sleeve of the present invention;

[0039] Fig.11 For the present invention Fig.10 Enlarged view of the rotating stage in the middle;

[0040] Fig.12 For the present invention Fig.11 Enlarged view of the middle positioning rod;

[0041] Fig.13 It is a schematic diagram of the level detection device of the present invention.

[0042] In the figure:

[0043] 1. Hand lever; 2. Mounting bracket; 3. Measuring instrument; 4. Vertical adjustment assembly; 41. Grounding sleeve; 42. Connector; 421. Clamping ring; 422. Fixed platform; 423. Fixed screw sleeve; 424. Elastic membrane; 43. Rotating groove; 44. Rotating platform; 45. Storage groove; 46. Top support sleeve; 47. Push spring; 48. Push groove; 49. Sliding hole; 410. Sliding rod; 5. Height control assembly; 51. Base; 52. Through hole; 53. Limiting platform; 54. Positioning rod; 55. Socket; 56. Side groove; 57. Fixed plate; 58. Extension rod; 59. Pressing rod; 510. Retracting groove; 511. Pushing plate; 512. Reset spring; 6. Level detection device; 61. Fixed sleeve; 62. Fixed frame; 63. Level. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0045] Example 1, reference Figure 1-Figure 6 , Figure 10-11 , Fig.13 , which is the first embodiment of the present invention, provides a high-precision construction land measuring device for national land space planning, including a hand rod 1, a mounting bracket 2 arranged on the top of the hand rod 1, a measuring instrument 3 arranged on the surface of the mounting bracket 2, and also includes a vertical adjustment component 4 arranged at the bottom of the hand rod 1, the vertical adjustment component 4 specifically includes a grounding sleeve 41 sleeved on the bottom of the hand rod 1, a connecting piece 42 flexibly connected between the hand rod 1 and the grounding sleeve 41, a rotating groove 43 opened on the inner wall of the grounding sleeve 41, a rotating table 44 rotatably installed on the inner side of the rotating groove 43, a storage groove 45 opened on the top of the rotating table 44, a top supporting sleeve 46 and a pushing spring 47 slidably inserted into the inside of the storage groove 45, a pushing groove 48 opened on the outside of the top supporting sleeve 46, a sliding hole 49 opened on the outside of the rotating table 44, and a sliding rod 410 slidably inserted into the sliding hole 49.

[0046] The hand rod 1 is a telescopic rod, and a fixing buckle is installed between the two sections of the telescopic rod. A height marking line is engraved on the surface of the upper section of the telescopic rod. The value of the height marking line indicates the distance from the top of the mounting bracket 2 to the bottom of the vertical adjustment component 4, which is convenient for adjusting and grasping the height of the measuring instrument 3. At the same time, the measuring instrument 3 can receive the signal better after being raised. When engraving the height marking line, the difference caused by the relative displacement of the hand rod 1 and the vertical adjustment component 4 needs to be considered.

[0047] Specifically, the bottom of the grounding sleeve 41 is set to be truncated, so that the grounding sleeve 41 can stand stably on the bottom surface and will not be inserted into the ground. The grounding sleeve 41 is assembled by two symmetrical parts, and the two parts are fixed by screws, which is convenient for the installation of accessories inside the grounding sleeve 41. The rotating groove 43 is spherical, and the center of the rotating groove 43 is located on the central axis of the grounding sleeve 41. The diameter of the rotating groove 43 is larger than the inner diameter of the grounding sleeve 41. The rotating platform 44 is spherical, and a horizontal platform is set outside the rotating platform 44. Under the influence of weight, the horizontal platform is always located Above the rotating table 44, the area of ​​the horizontal platform is larger than the bottom area of ​​the hand bar 1, the storage groove 45 is annular, and the top supporting sleeve 46 extends out of the storage groove 45. The top supporting sleeve 46 is located below the hand bar 1. The top surface area of ​​the top supporting sleeve 46 is larger than the bottom area of ​​the hand bar 1. The top supporting sleeve 46 maintains a distance from the hand bar 1. The pushing spring 47 is located below the top supporting sleeve 46. The sliding hole 49 is connected to the storage groove 45. One end of the sliding rod 410 extends into the pushing groove 48, and the other end is in contact with the inner wall of the rotating groove 43. The upper and lower sides of the pushing groove 48 are both inclined.

[0048] By setting the vertical adjustment component 4, the weight of the side of the rotating table 44 with the horizontal platform is less than the weight of the side without the horizontal platform. In this way, even if the grounding sleeve 41 is in a tilted state when standing on the bottom surface, the rotating table 44 can still keep the horizontal platform upward and parallel to the horizontal plane due to the influence of the weight. When the hand rod 1 is pressed down, it falls on the top of the top supporting sleeve 46. The sliding rod 410 first fixes the rotating table 44, and then the hand rod 1 is pushed down by manpower to completely fit the top surface of the top supporting sleeve 46. In this way, the hand rod 1 can be kept in a vertical state, and the measuring instrument 3 is also kept vertical, and the influence of the ground environment is reduced, which is conducive to improving the measurement accuracy.

[0049] Specifically, the mounting bracket 2 is L-shaped and is composed of a transverse plate and a vertical plate, wherein the transverse plate is connected to the hand bar 1 and extends horizontally out of the upper surface of the hand bar 1, and the vertical plate is divided into an upper and lower part, the lower section of the vertical plate and the connecting part of the transverse plate are inclined toward the hand bar 1, and the top of this section extends to above the top surface of the hand bar 1, the upper section of the vertical plate is perpendicular to the top surface of the hand bar 1, and the measuring instrument 3 is fixed to the upper section of the vertical plate, and the mounting bracket 2 is made of a metal material with strong elastic properties, such as steel.

[0050] By installing the measuring instrument 3 on the L-shaped mounting bracket 2 and designing the shape of the mounting bracket 2, the bending part of the mounting bracket 2 has a certain elastic activity space, and the inclined part can swing up and down, thereby offsetting the impact shock generated by the contact between the vertical adjustment component 4 and the ground and the contact between the hand rod 1 and the top support sleeve 46, thereby protecting the measuring instrument 3.

[0051] The connecting member 42 specifically includes a clamping ring 421 fixedly mounted on the top of the grounding sleeve 41, a fixing platform 422 arranged on the outside of the hand lever 1, a fixing screw sleeve 423 threadedly sleeved on the outside of the hand lever 1, and an elastic membrane 424 installed between the hand lever 1 and the grounding sleeve 41.

[0052] Specifically, the clamping ring 421 and the grounding sleeve 41 are fixed by screws, the fixing platform 422 is fixedly connected to the hand lever 1, and a thread corresponding to the fixing screw sleeve 423 is arranged on the outer side of the hand lever 1 above the fixing platform 422. The elastic membrane 424 is annular, and the inner circular edge of the elastic membrane 424 is clamped between the fixing platform 422 and the fixing screw sleeve 423, and the outer circular edge is clamped between the grounding sleeve 41 and the clamping ring 421. Anti-slip grooves that bite each other are arranged between the fixing platform 422 and the fixing screw sleeve 423, and between the grounding sleeve 41 and the clamping ring 421. The elastic membrane 424 is made of elastic rubber material; the horizontal height of the upper surface of the fixing platform 422 is higher than the upper surface of the grounding sleeve 41.

[0053] By using the elastic membrane 424 to connect the hand lever 1 and the grounding sleeve 41, the two are connected together and each has a certain degree of freedom of movement, so that the state of the grounding sleeve 41 will not affect the hand lever 1, which is convenient for adjusting the state of the hand lever 1. At the same time, the elastic membrane 424 can prevent mud and dust from entering the grounding sleeve 41, thereby maintaining the flexibility of the rotation of the rotating platform 44.

[0054] A level detection device 6 is provided on the outside of the hand bar 1. The level detection device 6 specifically includes a fixed sleeve 61 sleeved on the outside of the hand bar 1, a fixed frame 62 fixed to the outside of the fixed sleeve 61, and a spirit level 63 inserted into the inside of the fixed frame 62. The spirit level 63 is a liquid spirit level. The top surface of the spirit level 63 is set as a glass arc plate protruding upward. The inside of the spirit level 63 is filled with a mixed solution. The mixed solution can be two or more solutions such as water, ethanol, glycerin, etc. The mixed solution does not fill the spirit level 63, leaving some air inside; the orientation of the spirit level 63 is the same as the front direction of the measuring instrument 3, which is convenient for observation.

[0055] The installation height of the level detection device 6 is set according to the height of the user and can be the same as the shoulder height for easy observation.

[0056] By setting up the horizontal detection device 6, during detection, the hand rod 1 is placed on the ground, and the position of the bubble in the spirit level 63 is observed. By seeing whether it is centered, it is judged whether the state of the hand rod 1 is vertical. In this way, the judgment can be made simply and quickly, and when the vertical adjustment component 4 fails, it can be discovered and repaired in time.

[0057] Example 2, reference Figure 5-Figure 12 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that a height control component 5 is arranged in the vertical adjustment component 4, and the height control component 5 specifically includes a base 51 clamped on the outside of the grounding sleeve 41, a through hole 52 opened at the center of the horizontal platform on the top of the rotating table 44, a limit platform 53 and a positioning rod 54 inserted into the through hole 52, a socket 55 opened at the top of the positioning rod 54, two side grooves 56 symmetrically opened on the outside of the positioning rod 54, a fixing plate 57 slidably installed in the side groove 56, an extension rod 58 arranged on the side of the fixing plate 57 close to the socket 55, a pressing rod 59 slidably inserted into the socket 55, two folding grooves 510 symmetrically opened on the outside of the pressing rod 59, a pushing plate 511 rotatably installed in the folding groove 510, and a return spring 512 sleeved on the bottom of the pressing rod 59.

[0058] Specifically, the storage groove 45 surrounds the outside of the through hole 52, and the top surface of the base 51 is provided with an arc-shaped groove, the center of the arc-shaped groove is located below the center of the rotating table 44, the through hole 52 passes through the rotating table 44 up and down, the limit platform 53 is fixedly installed in the top support sleeve 46, the bottom end of the positioning rod 54 passes through the through hole 52 and extends into the base 51, the side groove 56 is connected with the insertion hole 55, the fixing plate 57 is fitted with the inner wall of the through hole 52, the extension rod 58 extends into the insertion hole 55, the upper end of the pressing rod 59 extends out of the insertion hole 55, the bottom end of the pushing plate 511 presses on the top of the extension rod 58, and the side edge of the bottom of the pushing plate 511 away from the folding groove 510 is set to an arc shape, and a spring is installed between the pushing plate 511 and the inner wall of the folding groove 510. The spring pushes the pushing plate 511 outward, and the two pushing plates 511 are distributed in an "eight" shape.

[0059] By setting the height control component 5, when the grounding sleeve 41 is tilted, the deflection of the rotating table 44 remains in the original state, the positioning rod 54 also remains vertical, and the positioning rod 54 slides on the arc surface of the base 51 and is lifted upward, so that the displacement distance of the limit platform 53 and the top supporting sleeve 46 is reduced, and the relative displacement between the hand lever 1 and the grounding sleeve 41 is reduced, so that the error caused by the shortening of the distance from the rotating table 44 to the ground due to the tilt of the grounding sleeve 41 can be offset, avoiding errors in measuring three-dimensional areas. At the same time, the height control component 5 also provides a counterweight for the rotating table 44 to keep its state more stable.

[0060] All movable parts inside the ground sleeve 41, except between the sliding rod 410 and the rotating groove 43, need to be lubricated to reduce the influence of friction.

[0061] Based on Examples 1-2, the working principle of a high-precision construction land measurement device for national land space planning of the present invention is as follows:

[0062] During assembly: first disassemble the ground sleeve 41 in half and put it aside, then install the push plate 511 into the retracted groove 510, press the push plate 511 several times, observe whether the spring rebound is normal, then put the return spring 512 on one end of the push rod 59, and then insert the end of the push rod 59 equipped with the return spring 512 into the through hole 52 forward until the return spring 512 contacts the bottom wall of the socket 55 and stops. In this process, the arc edge of one end of the push plate 511 is pressed down to the socket 5 5, the push plate 511 will be squeezed into the folding groove 510. When the top pressure rod 59 moves to the specified position, the push plate 511 is pushed open by the spring and enters the side groove 56. The fixing plates 57 are slid into the side grooves 56 one by one, so that the push plate 511 is pressed above the extension rod 58. Then, the positioning rod 54 is inserted into the through hole 52 so that it passes through the other end of the rotating table 44. The positioning rod 54 is completely inserted into the through hole 52, thus completing the installation of part of the height control component 5.

[0063] The limit platform 53 is fixed to the inner side of the top support sleeve 46 by bolts, and then the push spring 47 is inserted into the receiving groove 45, and then the top support sleeve 46 is inserted into the receiving groove 45. At the same time, the limit platform 53 is also inserted into the through hole 52, and then the sliding rods 410 are inserted into the sliding holes 49 one by one, so that the sliding rods 410 are in contact with the inner wall of the push groove 48, thereby completing the installation of part of the vertical adjustment component 4.

[0064] The assembled rotating platform 44 is placed into the rotating groove 43 in the grounding sleeve 41 on one side, and the base 51 is then clamped on the bottom of the inner wall of the grounding sleeve 41 on one side, and adjusted at the same time so that the positioning rod 54 can slide in the arc-shaped groove at the top of the base 51, and then the grounding sleeve 41 on the other side is buckled on the surface of this grounding sleeve 41 and fixed with screws; the elastic membrane 424 is laid flat on the top of the grounding sleeve 41 so that the elastic membrane 424 is concentric with the grounding sleeve 41, and then the clamping ring 421 is buckled and fixed with screws, so that the outer circular edge of the elastic membrane 424 is fixed, and then the hand rod 1 is inserted from the top of the grounding sleeve 41, and the hand rod 1 passes through the elastic membrane 424. During this process, the fixed platform 422 squeezes the elastic membrane 424 to deform it, and the fixed platform 422 moves to the bottom of the elastic membrane 424, and finally the fixed screw sleeve 423 is rotated to move the fixed screw sleeve 423 toward the fixed platform 422 to clamp the inner circular edge of the elastic membrane 424, so that the entire installation of the vertical adjustment component 4 is completed.

[0065] The mounting bracket 2 is fixed to the top of the hand lever 1 by bolts, and then the measuring instrument 3 is fixed to the vertical plate of the mounting bracket 2 by bolts, and the level 63 is inserted into the fixing frame 62, thus completing the whole installation work.

[0066] During work: first turn on the measuring instrument 3 and enter the corresponding measuring mode, then adjust the length of the hand bar 1, and input the value displayed by the height mark line into the measuring instrument 3, hold the hand bar 1, stand it on the bottom surface, adjust the height of the horizontal detection device 6 to make it the same height as the shoulder, and complete all the preparations.

[0067] The handheld device enters the measurement site, and walks along the planned route or along the edge of the site, and stands the device on the bottom surface at intervals to record the point position. When the device stands on the bottom surface, the grounding sleeve 41 first contacts the bottom surface. Due to its own weight and the supporting force applied by the hand, the grounding sleeve 41 will deform along with the bottom surface state of the landing area. When the bottom surface is tilted, the grounding sleeve 41 will move closer to the vertical line of its bottom surface. At this time, the hand rod 1 is affected by the grounding sleeve 41, and its state will also change, and it will no longer remain vertical. The rotating table 44 in the grounding sleeve 41 is an incomplete spherical shape due to its own shape design, with a heavy counterweight on one end and a light counterweight on the other end, so that the horizontal position on the rotating table 44 is not completely spherical. The platform is always located above the rotating table 44 and parallel to the horizontal plane. The rotating table 44 rotates relative to the grounding sleeve 41 inside the rotating groove 43 and is not affected by the changes of the grounding sleeve 41. The positioning rod 54 also remains in a vertical state. However, due to the inclination of the grounding sleeve 41, the base 51 also deflects. The positioning rod 54 slides in the arc-shaped groove on the top of the base 51. Affected by the changes in its arc surface, the positioning rod 54 is lifted upward, and the part of the positioning rod 54 located in the through hole 52 becomes longer, thereby shortening the displacement distance of the limit platform 53 in the through hole 52. In the above process, the greater the inclination angle of the grounding sleeve 41, the greater the lifting distance of the positioning rod 54, and the shorter the displacement distance of the limit platform 53 in the through hole 52.

[0068] After the grounding sleeve 41 contacts the bottom surface, the hand exerts force to press the hand lever 1 downward, and the hand lever 1 stretches the elastic membrane 424 to move downward and insert into the grounding sleeve 41. After the hand lever 1 contacts the top supporting sleeve 46, the top supporting sleeve 46 is pushed downward, and the top supporting sleeve 46 compresses the pushing spring 47 to enter the receiving groove 45. During this process, the pushing groove 48 is gradually misaligned with the sliding hole 49, and the sliding rod 410 is pushed out of the pushing groove 48, so that the pushing groove 48 is tightly pressed against the inside of the rotating groove 43, fixing the rotating table 44 and the grounding sleeve 41. The grounding sleeve 41 stands at the bottom and remains stable. In this way, the state of the rotating table 44 will also remain stable, and the top supporting sleeve 46 continues to move downward until the limit table 53 contacts the pushing rod 59, and the pushing rod 59 continues to move deeper into the insertion hole 55 following the movement of the compressed return spring 512. The pushing plate 511 pushes the fixing plate 57 to the outside of the side groove 56, so that it presses on the inner wall of the through hole 52. In this way, the positioning rod 54 is fixed to the rotating table 44. In this way, after the limiting platform 53 completely presses the pushing rod 59 into the insertion hole 55, the limiting platform 53 contacts the positioning rod 54, so that the limiting platform 53 can no longer move downward, and the side groove 56 can no longer move. In this way, the hand rod 1 is forced to move downward, and its ground will be completely in contact with the upper surface of the top support sleeve 46. The upper surface of the top support sleeve 46 is in a horizontal state, and then the hand rod 1 is in a vertical state.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high-precision construction land measurement device for national land space planning, comprising a hand lever (1), a mounting bracket (2) arranged on the top of the hand lever (1), and a measuring instrument (3) arranged on the surface of the mounting bracket (2), characterized in that: It also includes a vertical adjustment component (4) arranged at the bottom of the hand lever (1), wherein the vertical adjustment component (4) specifically includes a grounding sleeve (41) sleeved on the bottom of the hand lever (1), a connecting piece (42) flexibly connected between the hand lever (1) and the grounding sleeve (41), a rotating groove (43) provided on the inner wall of the grounding sleeve (41), a rotating table (44) rotatably mounted on the inner side of the rotating groove (43), a storage groove (45) provided on the top of the rotating table (44), a top supporting sleeve (46) and a pushing spring (47) slidably inserted into the interior of the storage groove (45), a pushing groove (48) provided on the outer side of the top supporting sleeve (46), a sliding hole (49) provided on the outer side of the rotating table (44), and a sliding rod (410) slidably inserted into the interior of the sliding hole (49); The rotating groove (43) is spherical, and the center of the rotating groove (43) is located on the central axis of the grounding sleeve (41). The diameter of the rotating groove (43) is larger than the inner diameter of the grounding sleeve (41). The rotating table (44) is spherical, and a horizontal platform is arranged outside the rotating table (44). Under the influence of weight, the horizontal platform is always located above the rotating table (44). The receiving groove (45) is annular, and the top supporting sleeve (46) extends out of the receiving groove (45). The top supporting sleeve (46) is located below the hand lever (1). The push spring (47) is located below the top supporting sleeve (46). The sliding hole (49) is connected to the receiving groove (45). One end of the sliding rod (410) extends into the push groove (48), and the other end is in contact with the inner wall of the rotating groove (43). The upper and lower sides of the push groove (48) are both inclined. The vertical adjustment component (4) is provided with a height control component (5), which specifically comprises a base (51) clamped on the outside of the ground sleeve (41), a through hole (52) provided at the center of the horizontal platform on the top of the rotating table (44), a limit table (53) plugged into the through hole (52), a positioning rod (54), a plug hole (55) provided at the top of the positioning rod (54), two side grooves (56) symmetrically provided on the outside of the positioning rod (54), a fixing plate (57) slidably installed in the side grooves (56), an extension rod (58) provided on the side of the fixing plate (57) close to the plug hole (55), a pressing rod (59) slidably inserted into the plug hole (55), two folding grooves (510) symmetrically provided on the outside of the pressing rod (59), a pushing plate (511) rotatably installed in the folding grooves (510), and a return spring (512) sleeved on the bottom of the pressing rod (59); The storage groove (45) surrounds the outside of the through hole (52), the top surface of the base (51) is provided with an arc-shaped groove, the through hole (52) passes through the rotating platform (44) from top to bottom, the limit platform (53) is fixedly installed in the top support sleeve (46), the bottom end of the positioning rod (54) passes through the through hole (52) and extends into the base (51), the side groove (56) is connected with the plug hole (55), the fixing plate (57) is fitted with the inner wall of the through hole (52), the extension rod (58) extends into the plug hole (55), the upper end of the pressing rod (59) extends out of the plug hole (55), the two pushing plates (511) are distributed in an "eight" shape, and the bottom end of the pushing plate (511) presses on the top of the extension rod (58); A level detection device (6) is arranged on the outside of the handle (1), and the level detection device (6) specifically comprises a fixing sleeve (61) sleeved on the outside of the handle (1), a fixing frame (62) fixed on the outside of the fixing sleeve (61), and a level meter (63) plugged into the inside of the fixing frame (62).

2. The high-precision construction land measurement device for national land space planning according to claim 1 is characterized in that: The mounting bracket (2) is L-shaped and is composed of a horizontal plate and a vertical plate, wherein the horizontal plate is connected to the hand lever (1) and extends horizontally out of the upper surface of the hand lever (1), and the vertical plate is divided into an upper and lower part, the lower part of the vertical plate and the connecting part of the horizontal plate are inclined toward the hand lever (1), and the top of this part extends to above the top surface of the hand lever (1), the upper part of the vertical plate is perpendicular to the top surface of the hand lever (1), and the measuring instrument (3) is fixed to the upper part of the vertical plate.

3. The high-precision construction land measurement device for national land space planning according to claim 2 is characterized in that: The hand lever (1) is a telescopic lever, and a fixing buckle is installed between two sections of the telescopic lever. A height marking line is engraved on the surface of the upper section of the telescopic lever, and the value of the height marking line indicates the distance from the top of the mounting bracket (2) to the bottom of the vertical adjustment component (4).

4. The high-precision construction land measurement device for national land space planning according to claim 3 is characterized in that: The connecting member (42) specifically comprises a clamping ring (421) fixedly mounted on the top of the grounding sleeve (41), a fixing platform (422) arranged on the outside of the hand lever (1), a fixing screw sleeve (423) threadedly sleeved on the outside of the hand lever (1), and an elastic membrane (424) mounted between the hand lever (1) and the grounding sleeve (41); The elastic membrane (424) is annular, and the inner circular edge of the elastic membrane (424) is clamped between the fixing platform (422) and the fixing screw sleeve (423), and the outer circular edge is clamped between the grounding sleeve (41) and the clamping ring (421), and anti-slip grooves that engage with each other are provided between the fixing platform (422) and the fixing screw sleeve (423), and between the grounding sleeve (41) and the clamping ring (421).

5. The high-precision construction land measurement device for national land space planning according to claim 4 is characterized in that: The upper surface of the fixing platform (422) is higher in level than the upper surface of the grounding sleeve (41).

6. The high-precision construction land measurement device for national land space planning according to claim 1 is characterized in that: An edge of one side of the bottom of the push plate (511) away from the folding groove (510) is arranged in an arc shape.

7. The high-precision construction land measurement device for national land space planning according to claim 1 is characterized in that: The orientation of the level (63) is the same as the front orientation of the measuring instrument (3).

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