A land area surveying device and a method of use thereof

Abstract

The present invention discloses a measuring device for land area surveying and mapping and a method for using the same, and relates to the technical field of land surveying and mapping. The measuring device for land area surveying and mapping and the method for using the same comprise a mounting plate and a horizontal adjustment support rod, wherein the mounting plate is height-adjustably mounted on the horizontal adjustment support rod, the upper end of the mounting plate is adjustably mounted with a mounting frame by adjusting a support sleeve rod, an irradiation light source is mounted in the middle of the mounting frame, a plurality of adjustment mechanisms are mounted on the outer edge of the mounting plate, one end of the plurality of adjustment mechanisms all extend toward the central axis of the mounting plate and are all mounted with adjustment rods, and a plurality of adjustment rods are detachably sleeved with flexible deformable radiographic rings at their lower ends. The present invention can adjust the installation position and installation state of the adjustment mechanism as required, thereby changing the shape of the flexible deformable radiographic ring, and can make the annular illumination area formed by the flexible deformable radiographic ring under the irradiation of the irradiation light source changeable in shape, thereby more closely fitting the actual shape of the land to be measured.

Description

Technical Field

[0001] The present invention relates to the technical field of land surveying and mapping, and in particular to a measuring device for land area surveying and mapping and a use method thereof. Background Art

[0002] Land planning refers to the long-term arrangement for the rational use of land within a country or a certain region in accordance with the prospects and needs of economic development, aiming to ensure that the use of land can meet the requirements of the proportional development of various sectors of the national economy. The basis of planning is the distribution and allocation of existing natural resources, technical resources and human resources, so that the land can be fully and effectively utilized without being wasted due to human factors. Land area surveying and mapping equipment is a variety of instruments used for orientation, distance measurement, angle measurement, height measurement, mapping and photogrammetry required for surveying work in the planning, design, construction and management stages of engineering construction.

[0003] After searching, the Chinese patent with the authorization announcement number CN117213407B involves the field of land area surveying and mapping technology, specifically land area surveying and mapping equipment and methods for land reclamation, wherein the equipment includes a horizontal adjustment component, a light blocking component, a height adjustment component and an illumination component, wherein the horizontal adjustment component is used to adjust the light blocking component and make it horizontal; the light blocking component includes a base, a first baffle, a second baffle, a third baffle and a fourth baffle, and the base is provided with a first through hole from top to bottom; the height adjustment component is used to adjust the height of the illumination component; the illumination component includes a lampshade and a spotlight, which slides horizontally on the base along a first direction through the first baffle and the second baffle, and slides on the base along a second direction through the third baffle and the fourth baffle, and the area exposed by the first through hole forms a light-transmitting area, and light is emitted to the light-transmitting area through the spotlight, so that the illuminated area coincides with the area where the land is located, and the land area is obtained by calculation, without the need for precision instruments, with low cost and no problem of easy damage and need for repair. The equipment is simple and convenient to operate and has high surveying and mapping efficiency.

[0004] The above-mentioned device obtains the area of ​​the light-transmitting region that is proportional to the actual area of ​​the land through light imaging, and obtains the actual area of ​​the land through calculation. However, the shape of the light-transmitting area is limited by the edge shape of the light-blocking component. In actual use, the shape of the land to be measured is variable, and may be circular, rectangular, regular or irregular polygons, etc. This requires multiple segmentation and measurement of the land, and multiple measurements are prone to cause certain errors. The actual measurement results are not accurate enough, and the measurement workload increases, which reduces the surveying and mapping efficiency. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a measuring device for land area surveying, which solves the problems that the land needs to be divided and measured multiple times, and it is easy to cause certain errors during multiple measurements, the actual measurement results are not accurate enough, and at the same time, the measurement workload increases, resulting in a decrease in the surveying and mapping efficiency.

[0006] On the other hand, the present invention also provides a method for using a measuring device for land area surveying.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A measuring device for land area surveying includes a mounting plate and a horizontal adjustment support rod, and the mounting plate is adjustably mounted on the horizontal adjustment support rod in terms of height.

[0008] An installation frame is adjustably installed at the upper end of the mounting plate through an adjustment support sleeve rod, and an irradiation light source is installed in the middle of the installation frame.

[0009] A number of adjustment mechanisms are installed on the outer edge of the mounting plate. One end of each of the number of adjustment mechanisms extends towards the central axis of the mounting plate and is respectively installed with an adjustment rod. Each of the number of adjustment mechanisms drives the corresponding adjustment rod to move linearly or deflect arcally. A flexible deformable imaging ring is detachably sleeved at the lower end of each of the number of adjustment rods. The flexible deformable imaging ring is made of an elastic material with good ductility.

[0010] The adjustment mechanism includes a mounting component, a support plate and an adjustment screw. The mounting component is detachably clamped to the mounting plate through a mounting bolt. The support plate is rotatably installed on the mounting component. The adjustment screw threadedly penetrates through the upper end of the support plate and is rotatably connected to the upper end of the adjustment rod.

[0011] The adjustment mechanism further includes a guiding and limiting member for restricting the adjustment rod from rotating along with the adjustment screw.

[0012] Further, the mounting component includes a mounting block. The mounting block is a U-shaped clamping plate. The mounting block is clamped on the outer edge of the mounting plate. The upper end of the mounting bolt threadedly penetrates through the lower end of the mounting block and abuts against the lower end surface of the mounting plate.

[0013] Further, a connecting shaft is fixed to the lower end of the support plate. The lower end of the connecting shaft rotatably penetrates through the upper end of the mounting block and is fixed with a rotating seat. The bottom surface of the rotating seat is rotatably connected to the upper end surface of the mounting plate.

[0014] When the upper end of the mounting bolt abuts against the lower end surface of the mounting plate, the inner top wall of the mounting block abuts against the upper surface of the rotating seat. At this time, the rotating seat cannot rotate.

[0015] Further, the mounting component further includes a support block and a support spring. The support block is elastically connected to the inner top wall of the mounting block through the support spring. The bottom surface of the support block abuts against the upper end surface of the mounting plate.

[0016] The original length of the support spring is greater than the distance between the upper end surface of the mounting plate and the inner top wall of the mounting block when the inner bottom wall of the mounting block is in contact with the lower end surface of the mounting plate after the mounting bolt is screwed out.

[0017] Furthermore, a clamping lug is provided on the inner top wall of the mounting block, and the clamping lug has a rough surface. When the mounting bolt is tightened so that the inner top wall of the mounting block fits the upper surface of the rotating seat, the clamping lug is pressed against the upper surface of the rotating seat.

[0018] Furthermore, a connecting plate is fixed to the upper end of the adjusting rod, a connecting bearing is installed on one side of the connecting plate, and the connecting plate is rotatably connected to one end of the adjusting screw rod through the connecting bearing.

[0019] An operating knob is fixed on one end of the adjusting screw rod away from the connecting plate.

[0020] Furthermore, a U-shaped mounting hook is provided at the lower end of the connecting plate, the flexible deformable radiographic ring is sleeved in the mounting hook, and the mounting hook is rotatably mounted on a vertical rod that tightens the flexible deformable radiographic ring.

[0021] Furthermore, a fixing plate is fixed to one side of the upper end of the support plate, and an anti-displacement component is installed on the fixing plate. The anti-displacement component includes a second adjusting bolt and a clamping block. The second adjusting bolt thread passes through the fixing plate, and the lower end of the second adjusting bolt is rotatably connected to the upper end of the clamping block. The clamping block is arc-shaped, and an arc-shaped rubber gasket is arranged at the lower end of the clamping block.

[0022] When the second adjusting bolt is screwed in downward, the rubber gasket at the lower end of the clamping block is pressed against the adjusting screw.

[0023] Furthermore, the guide limiter comprises a guide limiter rod, one end of which is fixed to a side of the connecting plate close to the adjusting screw, and the other end of which slides through the supporting plate.

[0024] On the other hand, the present invention further provides a method for using a land area surveying and mapping measuring device, which is applied to the above-mentioned land area surveying and mapping measuring device, and comprises the following steps:

[0025] Step 1: First, the device is installed on the land to be measured by adjusting the support rods, and the mounting plate is adjusted to a horizontal state by adjusting the support rods;

[0026] Step 2, turning on the illumination light source, so that the illumination light source emits light and forms an annular illumination area 1 by illuminating the flexible deformable imaging ring;

[0027] Step 3: By adjusting the height of the mounting frame and the light source, the size of the annular illumination area 1 is adjusted to obtain an annular illumination area 2 that substantially covers the area to be measured;

[0028] Step 4: adjusting the positions of a plurality of adjustment rods through a plurality of adjustment mechanisms, so that the plurality of adjustment rods drive the flexible deformable imaging ring to deform, and finally form a ring-shaped illumination area 3 that completely fits the edge of the land area to be measured;

[0029] Step 5. At this time, the position of the adjusting rod is fixed by the adjusting mechanism, that is, the shape and area formed by the deformation of the flexible deformable imaging ring are fixed. The distance from the irradiation light source to the ground is L1, the distance from the irradiation light source to the flexible deformable imaging ring is L2, and the annular area formed by the flexible deformable imaging ring is S2. The land area S1 is calculated by the formula S1=(L1 / L2)*(L1 / L2)*S2.

[0030] The present invention has the following beneficial effects:

[0031] (1) Through the arrangement of the flexible deformable imaging ring, the adjustment mechanism and the adjustment rod, the installation position and the installation state of the adjustment mechanism can be adjusted as needed, that is, the deflection angle of the installation assembly can be adjusted, thereby adjusting the angle of the support plate and the adjustment screw, and driving the adjustment rod to change position, so that the shape of the flexible deformable imaging ring is changed, and the shape of the annular illumination area formed by the flexible deformable imaging ring under the illumination of the light source can be varied, so as to better fit the actual shape of the land to be measured.

[0032] (2) Through the arrangement of the support block and the support spring, when the mounting bolt is screwed out, the upper arm of the mounting block rises under the elastic force of the support spring, so that the inner bottom wall of the mounting block abuts against the lower end surface of the mounting plate, thereby causing the inner top wall of the mounting block to separate from the rotating seat, thereby facilitating the release of the limiting effect on the rotating seat and allowing the rotating seat to have rotation space and be convenient for rotation.

[0033] (3) By setting the clamping protrusion, when the inner top wall of the installation block fits with the upper surface of the rotating seat, the rough surface of the clamping protrusion presses against the upper surface of the rotating seat, thereby increasing the friction between the upper surface of the rotating seat and the inner top wall of the installation block. This makes the limiting effect of the installation block on the rotating seat more reliable, avoids unnecessary rotation of the rotating seat during use, and enhances the stability of the device.

[0034] (4) Through the setting of the anti-displacement component, when the second adjusting bolt is screwed downward, the rubber gasket at the lower end of the clamping block presses against the adjusting screw. Although the thread matching relationship between the adjusting screw and the support plate can produce the effect of thread self-locking, when it is subjected to lateral external force along the circumference of the adjusting screw, it may still rotate, thereby causing a change in position. Through the setting of the second adjusting bolt and the clamping block, the adjusting screw can be further limited to avoid unnecessary rotation of the adjusting screw during use.

[0035] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the overall structure of the mounting plate, the flexible deformable radiographic ring, the adjustment mechanism and the adjustment rod;

[0038] Figure 3 A front view of a set of adjustment mechanisms and an adjustment rod;

[0039] Figure 4 A schematic diagram of a first-person perspective structure of a set of adjustment mechanisms and an adjustment rod;

[0040] Figure 5 It is a schematic diagram of the structure of the installation component;

[0041] Figure 6 A schematic diagram of the second viewing angle structure of a set of adjustment mechanisms (without mounting components) and an adjustment rod;

[0042] Figure 7 A schematic diagram of the structure for adjusting the support sleeve rod, the irradiation light source and the mounting frame;

[0043] Figure 8 This is a schematic diagram of the structure of one type of flexible deformable angiographic ring (regular polygon, tending to be circular) after adjustment;

[0044] Fig. 9 It is a schematic diagram of another (rectangular) structure of the flexible deformable imaging ring after adjustment;

[0045] Fig.10 This is a schematic diagram of another (irregular polygonal) structure of the flexible deformable imaging ring after adjustment.

[0046] In the figure, 1, mounting plate; 2, horizontal adjustment support rod; 3, adjustment support sleeve rod; 31, first adjustment bolt; 4, irradiation light source; 5, mounting frame; 6, flexible deformable radiographic ring; 7, adjustment mechanism; 71, mounting assembly; 711, mounting block; 712, support block; 713, support spring; 714, clamping lug; 72, support plate; 721, fixing plate; 722, connecting shaft; 73, adjusting screw; 731, operating knob; 74, guide limit rod; 75, anti-displacement assembly; 751, second adjustment bolt; 752, clamping block; 76, mounting bolt; 77, connecting bearing; 78, rotating seat; 8, adjusting rod; 81, connecting plate; 82, mounting hook. DETAILED DESCRIPTION

[0047] 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.

[0048] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] According to the following Figure 1 - Fig.10 A measuring device for land area surveying and mapping provided by an embodiment of the present invention is described.

[0050] See also Figure 1 - Figure 3 The embodiment of the present invention provides a technical solution: a measuring device for land area surveying and mapping, comprising a hollow mounting plate 1 and a horizontal adjustment support rod 2, wherein the horizontal adjustment support rod 2 is a threaded rod with a pointed cone at the lower end, and a butterfly nut (not shown in the figure) is threadedly sleeved on the horizontal adjustment support rod 2 to adjust the height and horizontal state of the mounting plate 1, and the mounting plate 1 is height-adjustably mounted on the horizontal adjustment support rod 2.

[0051] The upper end of the mounting plate 1 is adjustable and mounted with a mounting frame 5 by adjusting the support sleeve rod 3. The adjustable support sleeve rod 3 includes a fixed sleeve, a movable support rod and a first adjusting bolt 31, wherein the lower end of the fixed sleeve is fixed to the upper end of the mounting plate 1, the movable support rod is slidably inserted in the fixed sleeve, and the upper end of the fixed sleeve is fixed to the lower end of the mounting frame 5. One end of the first adjusting bolt 31 is threaded through one side of the fixed sleeve and pressed against the side wall of the movable support rod. When the first adjusting bolt 31 is screwed in or out, the activity of the movable support rod can be restricted so that it is relatively fixed with the fixed sleeve, or the restriction on the movable support rod is released, thereby achieving the purpose of being able to adjust the height of the mounting frame 5. An irradiation light source 4 is installed in the middle of the mounting frame 5.

[0052] Several adjustment mechanisms 7 are installed on the outer edge of the mounting plate 1. One end of the several adjustment mechanisms 7 extends to the central axis of the mounting plate 1 and is installed with an adjustment rod 8. The several adjustment mechanisms 7 drive the several adjustment rods 8 to move linearly or deflect in an arc shape. The lower ends of the several adjustment rods 8 are detachably sleeved with a flexible deformable radiographic ring 6. The flexible deformable radiographic ring 6 is made of an elastic material with good ductility (such as a single or composite material such as rubber, latex, etc.). The flexible deformable radiographic ring 6 is located in the hollow area of ​​the mounting plate 1.

[0053] Specifically, the adjustment mechanism 7 includes a mounting assembly 71, a support plate 72 and an adjusting screw 73. The mounting assembly 71 is detachably connected to the mounting disk 1 through a mounting bolt 76. The support plate 72 is rotatably mounted on the mounting assembly 71. The adjusting screw 73 threads through the upper end of the support plate 72 and is rotatably connected to the upper end of the adjusting rod 8.

[0054] In this embodiment, the installation position and installation state of the adjustment mechanism 7 can be adjusted as needed, that is, the deflection angle of the installation component 71 can be adjusted, thereby adjusting the angle of the support plate 72 and the adjustment screw 73, and driving the adjustment rod 8 to change position, so that the shape of the flexible deformable imaging ring 6 is changed, and the shape of the annular illumination area formed by the flexible deformable imaging ring 6 under the illumination of the light source 4 can be varied, so as to better fit the actual shape of the land to be measured.

[0055] Among them, the illumination light source 4 adopts a composite light source commonly used in the prior art and suitable for the present embodiment. The illumination light source 4 can emit visible light of different intensities and colors, so as to meet the surveying and mapping needs under different light conditions, so that the annular illumination area is clearly visible under different light conditions. For example, on a sunny day with sufficient light, the illumination light source 4 emits visible light with eye-catching colors (such as red, blue, and green) and high brightness. On a cloudy day with poor light, the illumination light source 4 emits visible light with a color different from the existing color of the land (such as cyan) and low brightness. On a dim night, the illumination light source 4 emits visible light with soft colors (such as yellow and beige) and appropriate brightness. In this way, the device can meet the surveying and mapping needs under different light conditions and can protect the vision of surveyors to a certain extent.

[0056] More specifically, combined with Figure 3 In order to prevent the adjusting rod 8 from rotating with the adjusting screw 73 and losing the effect of limiting the position of the flexible deformable radiographic ring 6, the adjusting mechanism 7 also includes a guide limiter, which is used to limit the adjusting rod 8 from rotating with the adjusting screw 73.

[0057] like Figure 4 - Figure 5As shown, more specifically, the installation component 71 includes an installation clamping block 711. The installation clamping block 711 is a U-shaped clamping plate, which is clamped on the outer edge of the installation disk 1. The upper end of the installation bolt 76 threadedly penetrates through the lower end of the installation clamping block 711 and abuts against the lower end face of the installation disk 1.

[0058] In this implementation scheme, through the setting of the installation clamping block 711, it can cooperate with the installation bolt 76 to achieve the rapid installation and disassembly of the installation clamping block 711, that is, the adjustment mechanism 7 can be quickly installed on the installation disk 1, and the overall installation position and deflection angle of the adjustment mechanism 7 can be adjusted at any time by loosening the installation bolt 76, so as to achieve the convenient installation and disassembly effect and is easy to use.

[0059] As Figure 3 and Figure 6 shown, specifically, in order to facilitate the adjustment of the installation angles of the support plate 72, the adjustment screw 73 and the adjustment rod 8, a connecting shaft 722 is fixed at the lower end of the support plate 72. The lower end of the connecting shaft 722 rotatably penetrates through the upper end of the installation clamping block 711 and is fixed with a rotating seat 78. The bottom surface of the rotating seat 78 is rotatably connected to the upper end face of the installation disk 1 through a bearing, so as to meet the rotation requirement of the support plate 72.

[0060] After the upper end of the installation bolt 76 abuts against the lower end face of the installation disk 1, the inner top wall of the installation clamping block 711 abuts against the upper surface of the rotating seat 78. At this time, the rotating seat 78 cannot rotate.

[0061] In this implementation scheme, after the installation bolt 76 is loosened (that is, the upper end of the installation bolt 76 leaves the lower end face of the installation disk 1), the inner top wall of the installation clamping block 711 is disengaged from the upper surface of the rotating seat 78, so that the rotating seat 78 can rotate, thus facilitating the rotation of the support plate 72 and achieving the purpose of adjusting the installation angles of the adjustment screw 73 and the adjustment rod 8.

[0062] As Figure 3 and Figure 5 shown, specifically, the installation component 71 further includes a support block 712 and a support spring 713. The support block 712 is elastically connected to the inner top wall of the installation clamping block 711 through the support spring 713, and the bottom surface of the support block 712 abuts against the upper end face of the installation disk 1.

[0063] The original length of the support spring 713 is greater than the distance between the upper end face of the installation disk 1 and the inner top wall of the installation clamping block 711 when the inner bottom wall of the installation clamping block 711 fits with the lower end face of the installation disk 1 after the installation bolt 76 is screwed out.

[0064] In this embodiment, when the mounting bolt 76 is screwed out, the upper arm of the mounting block 711 rises downward under the elastic force of the support spring 713, so that the inner bottom wall of the mounting block 711 abuts against the lower end surface of the mounting plate 1, thereby causing the inner top wall of the mounting block 711 to disengage from the rotating seat 78, thereby facilitating the release of the limiting effect on the rotating seat 78 and allowing the rotating seat 78 to have a rotating space for easy rotation.

[0065] Specifically, combined Figure 4 - Figure 6 A clamping protrusion 714 is provided on the inner top wall of the mounting block 711, and the clamping protrusion 714 has a rough surface. When the mounting bolt 76 is tightened so that the inner top wall of the mounting block 711 fits with the upper surface of the rotating seat 78, the clamping protrusion 714 presses against the upper surface of the rotating seat 78.

[0066] In the present embodiment, by setting the clamping protrusion 714, when the inner top wall of the installation block 711 fits against the upper surface of the rotating seat 78, the rough surface of the clamping protrusion 714 presses against the upper surface of the rotating seat 78, thereby increasing the friction between the upper surface of the rotating seat 78 and the inner top wall of the installation block 711, thereby making the limiting effect of the installation block 711 on the rotating seat 78 more reliable, avoiding unnecessary rotation of the rotating seat 78 during use, and enhancing the stability of the device.

[0067] like Figure 3 As shown, specifically, a connecting plate 81 is fixed to the upper end of the adjusting rod 8, and a connecting bearing 77 is installed on one side of the connecting plate 81. The connecting plate 81 is rotatably connected to one end of the adjusting screw 73 through the connecting bearing 77. The setting of the connecting bearing 77 and the connecting plate 81 provides a rotating connection structure between the adjusting rod 8 and the adjusting screw 73, thereby realizing a rotating connection relationship between the adjusting screw 73 and the adjusting rod 8.

[0068] like Figure 4 As shown, an operating knob 731 is fixed to one end of the adjusting screw 73 away from the connecting plate 81 , so that the user can operate the adjusting screw 73 to rotate by operating the operating knob 731 .

[0069] like Figure 3 - Figure 4 As shown, specifically, a U-shaped mounting hook 82 is provided at the lower end of the connecting plate 81 , and the flexible deformable radiographic ring 6 is sleeved in the mounting hook 82 , and the mounting hook 82 is rotatably mounted with a vertical rod that tightens the flexible deformable radiographic ring 6 .

[0070] In this embodiment, the flexible deformable imaging ring 6 can be conveniently mounted inside a plurality of mounting hooks 82 to form an annular area. Rotating the mounting hooks 82 and the vertical rod for tightening the flexible deformable imaging ring 6 can reduce the friction generated between the mounting hooks 82 when the flexible deformable imaging ring 6 is pulled, thereby reducing the wear between the mounting hooks 82 and the flexible deformable imaging ring 6, making the device more durable.

[0071] Specifically, combined Figure 4 and Figure 6 A fixing plate 721 is fixed to one side of the upper end of the support plate 72, and an anti-displacement component 75 is installed on the fixing plate 721. The fixing plate 721 provides support for the installation of the anti-displacement component 75. The anti-displacement component 75 includes a second adjusting bolt 751 and a clamping block 752. The second adjusting bolt 751 threadedly penetrates the fixing plate 721, and the lower end of the second adjusting bolt 751 is rotatably connected to the upper end of the clamping block 752. The clamping block 752 is arc-shaped, and an arc-shaped rubber gasket is provided at the lower end of the clamping block 752.

[0072] In this embodiment, when the second adjusting bolt 751 is screwed downward, the rubber gasket at the lower end of the clamping block 752 is pressed against the adjusting screw 73. Although the threaded matching relationship between the adjusting screw 73 and the support plate 72 can produce a thread self-locking effect, when it is subjected to lateral external force along the circumference of the adjusting screw 73, it may still rotate, thereby causing a change in position. By setting the second adjusting bolt 751 and the clamping block 752, the adjusting screw 73 can be further limited to avoid unnecessary rotation of the adjusting screw 73 during use.

[0073] Specifically, combined Figure 2 The guide limit member includes a guide limit rod 74 , the axis of which is arranged parallel to the axis of the adjusting screw 73 , one end of the guide limit rod 74 is fixed to a side of the connecting plate 81 close to the adjusting screw 73 , and the other end of the guide limit rod 74 slides through the support plate 72 .

[0074] In this embodiment, by setting the guide limit rod 74, the connecting plate 81 can be limited, and the phenomenon that the connecting plate 81 rotates with the adjustment screw 73 is completely avoided, thereby ensuring that the adjustment rod 8 is always in a vertical state, and can play a stable limiting and stretching role on the flexible deformable angiography ring 6.

[0075] On the other hand, an embodiment of the present invention further provides a method for using a measuring device for land area surveying and mapping, and the specific steps are as follows: Step 1, firstly, the device is erected as a whole on the land to be measured by horizontally adjusting the support rod 2, and the mounting plate 1 is adjusted to a horizontal state by horizontally adjusting the support rod 2;

[0076] Step 2, turning on the illumination light source 4, so that the illumination light source 4 emits light and forms an annular illumination area 1 by illuminating the flexible deformable imaging ring 6;

[0077] Step 3: By adjusting the support sleeve rod 3, the height of the mounting frame 5 and the irradiation light source 4 is adjusted, thereby adjusting the size of the annular illumination area 1 to obtain an annular illumination area 2 that basically covers the area of ​​land to be measured;

[0078] Step 4: adjusting the positions of the plurality of adjustment rods 8 by means of the plurality of adjustment mechanisms 7, so that the plurality of adjustment rods 8 drive the flexible deformable imaging ring 6 to deform, and finally forming a ring-shaped illumination area 3 that completely fits the edge of the land to be measured;

[0079] Step five, at this time, fix the position of the adjusting rod 8 through the adjusting mechanism 7, that is, fix the shape and area formed by the deformation of the flexible deformable imaging ring 6, take the distance from the irradiation light source 4 to the ground as L1, the distance from the irradiation light source 4 to the flexible deformable imaging ring 6 as L2, the annular area formed by the flexible deformable imaging ring 6 as S2, and calculate the land area S1 through the formula S1=(L1 / L2)*(L1 / L2)*S2.

[0080] When in use (working), first insert the horizontal adjustment support rod 2 into the land of the area to be measured, so that the entire device is erected on the land of the area to be measured, and adjust the mounting plate 1 to a horizontal state by rotating the butterfly nut on the horizontal adjustment support rod 2, so that the mounting plate 1 is located at a suitable height.

[0081] Then, turn on the illumination light source 4 so that it emits light and forms an annular illumination area 1 by illuminating the flexible deformable imaging ring 6. The height of the mounting frame 5 and the illumination light source 4 is adjusted by adjusting the height of the support sleeve 3, that is, the first adjusting bolt 31 is screwed. After the first adjusting bolt 31 is loosened, the movable support rod is pulled out or inserted into the fixed sleeve, and then the first adjusting bolt 31 is tightened to complete the operation of adjusting the height of the mounting frame 5 and the illumination light source 4, thereby adjusting the size of the annular illumination area 1 to obtain an annular illumination area 2 that basically covers the area of ​​land to be measured.

[0082] The positions of the plurality of adjusting rods 8 are adjusted through the plurality of adjusting mechanisms 7, so that the plurality of adjusting rods 8 drive the flexible deformable imaging ring 6 to deform, that is, by loosening the mounting bolts 76, the mounting block 711 is separated from the mounting disk 1, thereby adjusting the mounting position of the adjusting mechanism 7, and then the mounting block 711 is clamped on the outer edge of the mounting disk 1, and the adjustment support plate 72 is rotated to change the mounting angle of the adjusting screw 73 and the adjusting rod 8. After the adjustment is completed, the mounting bolts 76 are tightened to fix the position of the mounting block 711, and at the same time, the mounting block 711 is pressed against the rotating seat 78 to limit the rotating seat 78, and then the adjusting screw 73 is rotated to make the adjusting screw 73 drive the adjusting rod 8 to move horizontally and linearly, so that the adjusting rod 8 is deformed through the flexible deformable imaging ring 6 at the lower end, and finally a ring-shaped illumination area three is formed that completely fits the edge of the land to be measured.

[0083] At this time, the position of the adjusting rod 8 is fixed by the adjusting mechanism 7, that is, the shape and area formed by the deformation of the flexible deformable imaging ring 6 are fixed, the distance from the irradiation light source 4 to the ground is taken as L1, the distance from the irradiation light source 4 to the flexible deformable imaging ring 6 is taken as L2, the annular area formed by the flexible deformable imaging ring 6 is S2, and the land area S1 is calculated by the formula S1=(L1 / L2)*(L1 / L2)*S2.

[0084] 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 the specific implementation methods described. 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.

Claims

1. A measuring device for land area surveying and mapping, comprising a mounting disk (1) and a horizontal adjustment support rod (2), wherein the mounting disk (1) is height-adjustably mounted on the horizontal adjustment support rod (2), and is characterized in that: An installation frame (5) is adjustably mounted on the upper end of the mounting disk (1) through an adjustment support sleeve rod (3), and an illumination light source (4) is mounted in the middle of the installation frame (5); A plurality of adjustment mechanisms (7) are mounted on the outer edge of the mounting disk (1). One ends of the plurality of adjustment mechanisms (7) all extend towards the central axis of the mounting disk (1) and are all mounted with adjustment rods (8). The plurality of adjustment mechanisms (7) respectively drive the plurality of adjustment rods (8) to linearly move or arc-shapedly offset. A flexible deformable contrast ring (6) is detachably sleeved on the lower ends of the plurality of adjustment rods (8), and the flexible deformable contrast ring (6) is made of an elastic material with good ductility; The adjustment mechanism (7) comprises a mounting assembly (71), a support plate (72) and an adjustment screw rod (73). The mounting assembly (71) is detachably clamped to the mounting disk (1) through a mounting bolt (76). The support plate (72) is rotatably mounted on the mounting assembly (71). The adjustment screw rod (73) threadedly penetrates through the upper end of the support plate (72) and is rotatably connected to the upper end of the adjustment rod (8); The adjustment mechanism (7) further comprises a guiding and limiting member for restricting the adjustment rod (8) from rotating along with the adjustment screw rod (73).

2. The measuring device for land area surveying and mapping according to claim 1, wherein: The mounting assembly (71) comprises a mounting block (711). The mounting block (711) is a U-shaped clamping plate. The mounting block (711) is clamped on the outer edge of the mounting disk (1). The upper end of the mounting bolt (76) threadedly penetrates through the lower end of the mounting block (711) and abuts against the lower end face of the mounting disk (1).

3. The measuring device for land area surveying and mapping according to claim 2, wherein: A connecting shaft (722) is fixed to the lower end of the support plate (72). The lower end of the connecting shaft (722) rotatably penetrates through the upper end of the mounting block (711) and is fixed with a rotating seat (78). The bottom surface of the rotating seat (78) is rotatably connected to the upper end face of the mounting disk (1); After the upper end of the mounting bolt (76) abuts against the lower end face of the mounting disk (1), the inner top wall of the mounting block (711) abuts against the upper surface of the rotating seat (78). At this time, the rotating seat (78) cannot rotate.

4. The measuring device for land area surveying and mapping according to claim 3, wherein: The mounting assembly (71) further comprises a support block (712) and a support spring (713). The support block (712) is elastically connected to the inner top wall of the mounting block (711) through the support spring (713). The bottom surface of the support block (712) abuts against the upper end face of the mounting disk (1); The original length of the support spring (713) is greater than the distance between the upper end surface of the mounting plate (1) and the inner top wall of the mounting block (711) when the inner bottom wall of the mounting block (711) is in contact with the lower end surface of the mounting plate (1) after the mounting bolt (76) is screwed out.

5. A land area surveying and mapping measuring device according to claim 3, characterized in that: The inner top wall of the mounting block (711) is provided with a clamping protrusion (714), and the clamping protrusion (714) has a rough surface. When the mounting bolt (76) is tightened so that the inner top wall of the mounting block (711) fits the upper surface of the rotating seat (78), the clamping protrusion (714) is pressed against the upper surface of the rotating seat (78).

6. A land area surveying and mapping measuring device according to claim 1, characterized in that: A connecting plate (81) is fixed to the upper end of the adjusting rod (8), a connecting bearing (77) is installed on one side of the connecting plate (81), and the connecting plate (81) is rotatably connected to one end of the adjusting screw rod (73) via the connecting bearing (77); An operating knob (731) is fixed to one end of the adjusting screw rod (73) away from the connecting plate (81).

7. A land area surveying and mapping measuring device according to claim 6, characterized in that: A U-shaped mounting hook (82) is provided at the lower end of the connecting plate (81), the flexible deformable radiographic ring (6) is sleeved in the mounting hook (82), and the mounting hook (82) is rotatably mounted on a vertical rod that tightens the flexible deformable radiographic ring (6).

8. A land area surveying and mapping measuring device according to claim 1, characterized in that: A fixing plate (721) is fixed to one side of the upper end of the support plate (72), an anti-displacement assembly (75) is mounted on the fixing plate (721), the anti-displacement assembly (75) comprises a second adjusting bolt (751) and a clamping block (752), the second adjusting bolt (751) is threadedly passed through the fixing plate (721), the lower end of the second adjusting bolt (751) is rotatably connected to the upper end of the clamping block (752), the clamping block (752) is arc-shaped, and an arc-shaped rubber gasket is arranged at the lower end of the clamping block (752); When the second adjusting bolt (751) is screwed downward, the rubber gasket at the lower end of the clamping block (752) is pressed against the adjusting screw rod (73).

9. A land area surveying and mapping measuring device according to claim 7, characterized in that: The guide limiter comprises a guide limiter rod (74), one end of which is fixed to a side of the connecting plate (81) close to the adjusting screw rod (73), and the other end of which slides through the supporting plate (72).

10. A method for using a land area surveying and mapping measuring device, applied to the land area surveying and mapping measuring device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: first, the device is installed on the land of the area to be measured by means of a horizontal adjustment support rod (2), and the mounting plate (1) is adjusted to a horizontal state by means of a horizontal adjustment support rod (2); Step 2, turning on the illumination light source (4), so that the illumination light source (4) emits light and forms an annular illumination area 1 by illuminating the flexible deformable imaging ring (6); Step 3: by adjusting the support sleeve rod (3), adjusting the height of the mounting frame (5) and the irradiation light source (4), the size of the annular illumination area 1 is adjusted to obtain an annular illumination area 2 that substantially covers the area of ​​land to be measured; Step 4: adjusting the positions of the plurality of adjustment rods (8) by means of the plurality of adjustment mechanisms (7) so that the plurality of adjustment rods (8) drive the flexible deformable imaging ring (6) to deform, and finally forming a ring-shaped illumination area 3 that completely fits the edge of the land area to be measured; Step 5. At this time, the position of the adjustment rod (8) is fixed by the adjustment mechanism (7), that is, the shape and area formed by the deformation of the flexible deformable imaging ring (6) are fixed. The distance from the irradiation light source (4) to the ground is L1, the distance from the irradiation light source (4) to the flexible deformable imaging ring (6) is L2, and the annular area formed by the flexible deformable imaging ring (6) is S2. The land area S1 is calculated by the formula S1=(L1 / L2)×(L1 / L2)×S2.

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