Urban land utilization measuring equipment

Abstract

The invention relates to the technical field of urban land utilization measurement, in particular to urban land utilization measurement equipment which comprises a tripod and an area measuring instrument. Through an auxiliary frame, when the tripod is moved under the same ground condition, whether supporting legs incline or not can be rapidly observed, and therefore adjustment is conducted; according to the detection equipment, the inclination angle and the height of any support rod can be independently adjusted, and the inclination angles of the three support rods can be directly and synchronously adjusted; meanwhile, a triangular pyramid frustum structure formed by the integral adjusting piece, the supporting legs and the independent adjusting pieces and a triangular structure formed by the telescopic rod, the independent adjusting pieces and the corresponding supporting legs disperse loads to all connecting parts through force conduction paths in multiple directions, single-point stress concentration is reduced, the loads are evenly distributed to the three supporting legs, and the load distribution efficiency is improved. Overload of a single supporting leg is avoided, the stability of the tripod is further ensured, the tripod is prevented from inclining or even toppling over, the accuracy of a detection result is ensured, and meanwhile the mu measuring instrument is prevented from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of urban land utilization measurement, in particular to urban land utilization measurement equipment. Background Art

[0002] Urban land use surveying refers to the measurement of urban land to facilitate urban planning and land use. When urban land is measured with an acre meter, either vertex measurement or mobile measurement can be used, depending on the shape of the land, topography and actual measurement needs.

[0003] Vertex measurement is suitable for plots with relatively regular shapes, such as urban plots with obvious corners and boundary points, including but not limited to rectangular and polygonal building land, squares, etc. When measuring, you only need to collect the positioning data of a few vertices, and the acreage meter can automatically calculate the area of ​​the plot enclosed by these points.

[0004] When performing vertex measurement, a tripod is generally used to fix the acreage meter. Existing tripods are mainly divided into two types: those with independently adjustable legs and those with non-adjustable legs. Although the lengths of the legs can be adjusted, they are not stable enough when used on complex and uneven ground. This can cause the tripod to tilt or even fall over easily, affecting the test results and even damaging the acreage meter. Summary of the Invention

[0005] In view of the above problems, the present invention provides an urban land use measurement device to solve the technical problem in the related art that the existing tripod is not stable enough, which affects the detection accuracy. To achieve the above purpose, the present invention provides the following technical solutions.

[0006] An urban land use measurement device according to an embodiment of the present application includes a tripod and an acreage meter. The acreage meter is placed on the tripod for measuring urban land. The tripod fixes the acreage meter so that it can be stably placed at detection points in various environments. The tripod includes a clamping portion, the lower end of which is evenly hinged with legs along its circumference. The legs are provided with auxiliary portions for facilitating observation of the inclination angle of the legs. An integral adjustment member is provided at the middle of the lower end of the clamping portion. The legs include a fixed section hingedly connected to the clamping portion and an adjustment section connected to the lower end of the fixed section. A single hinge is hinged between the integral adjustment member and the fixed section. The individual adjusting parts and the overall adjusting parts are used to control the three legs to initially open synchronously, and then adjust the inclination angle of the corresponding legs through the individual adjusting parts according to the ground conditions, so that the clamping part is finally in a horizontal state, and a triangular prism structure is always formed between the overall adjusting part, the legs and the individual adjusting parts; a telescopic rod is hinged between the overall adjusting part and the adjusting section, and the telescopic rod, the individual adjusting part and the corresponding legs form a triangular structure; a counterweight is detachably provided at the hinge position of the individual adjusting part and the fixed section, and the counterweight is used to adjust the overall center of gravity distribution of the equipment, reduce single-point stress concentration, and ensure the stability of the tripod.

[0007] According to an embodiment of the present invention, the clamping part includes a fixed platform, on which a rotating circular plate with a T-shaped cross-section is rotatably connected, a threaded connecting rod is threadedly connected to the rotating circular plate, a circular support plate is fixedly installed on the upper end of the threaded connecting rod, and a spirit level is fixedly installed on the upper left end of the circular support plate.

[0008] According to an embodiment of the present invention, a bidirectional screw is rotatably connected to the middle of the circular support plate, and the bidirectional screw is symmetrically threadedly connected to a moving block. The moving block and the circular support plate are slidably connected to each other front and back, and extrusion plates are fixedly installed at the opposite ends of the moving block, and rubber plates are fixedly installed at the opposite ends of the extrusion plates.

[0009] According to an embodiment of the present invention, a bidirectional screw rod 2 is rotatably connected to the middle part of the extrusion plate, and the bidirectional screw rod 2 is symmetrically threadedly connected to a clamping block. The clamping block and the extrusion plate are slidingly connected, and both the bidirectional screw rod 1 and the bidirectional screw rod 2 are fixedly installed with a control handle.

[0010] According to an embodiment of the present invention, the support leg includes a support rod, and the support rods are evenly hinged to the lower end of the fixed platform along its circumference. The number of the support rods is three, and the outer end of the lower side of the support rod is threadedly connected to a threaded sleeve. The lower end of the threaded sleeve is fixedly installed with a conical support foot, and the conical support foot is rotatably connected to a hinge ring.

[0011] According to an embodiment of the present invention, the integral adjustment part includes a threaded rod, a threaded rod is fixedly installed in the middle of the lower end of the fixed platform, an anti-slip ring is fixedly installed at the lower outer end of the threaded rod, a hexagonal sleeve is threadedly connected to the threaded rod, an annular groove is provided in the middle of the outer end of the hexagonal sleeve, a positioning ring is rotatably connected in the annular groove, the positioning ring and the bracket rod are jointly provided with a separate adjustment part, and a telescopic rod is hinged between the hinge ring and the positioning ring.

[0012] According to an embodiment of the present invention, the auxiliary frame includes a counterweight rod, a rectangular rod parallel to the central axis of the support rod fixedly mounted on the support rod, a counterweight rod hinged to the rectangular rod, a sector ruler with a right angle central angle fixedly mounted on the end of the counterweight rod away from the threaded rod, and angle scale lines provided on the sector ruler. According to an embodiment of the present invention, the separate adjustment member includes a support rod, a positioning ring with support rods hingedly mounted on the outer end thereof along its circumference, a rectangular housing slidably connected to the support rod on the side away from the threaded rod, a contact rod slidably connected within the rectangular housing and away from the support rod, and the contact rod is hingedly connected to the corresponding support rod on the end away from the rectangular housing.

[0013] According to an embodiment of the present invention, a section of the contact rod located inside the rectangular housing is evenly provided with tooth grooves, and a spur gear is rotatably connected inside the rectangular housing, and the spur gear cooperates with the tooth grooves.

[0014] According to an embodiment of the present invention, a column insertion groove is opened in the middle of the spur gear, and the column insertion groove is composed of a cylindrical groove and a flower-shaped key groove. A flower-shaped column is inserted in the flower-shaped key groove, and a cylindrical block is inserted in the cylindrical groove. The cylindrical block is fixedly connected to the flower-shaped column, and a rotating handle is fixedly installed on the end of the cylindrical block away from the flower-shaped column.

[0015] According to an embodiment of the present invention, the counterweight includes a clamping block, a lifting rope is installed at the lower end of the clamping block, a placement plate is fixedly installed at the lower end of the lifting rope, a weight is provided on the placement plate, an opening is provided on the weight, and the clamping block is provided with a clamping slot 1 for clamping connection with the fixed section and a clamping slot 2 for the limiting contact rod.

[0016] It can be seen from the above technical solutions that the present invention has the following advantages:

[0017] 1. In the present invention, the auxiliary frame facilitates the quick observation of whether the legs are tilted when the tripod is moved on the same ground, so as to make adjustments. The acre meter is clamped and fixed by the clamping part, thereby protecting the acre meter. Compared with the traditional tripod, the present detection equipment can adjust the inclination angle and height of any support rod independently, and can also directly adjust the inclination angle of the three support rods synchronously. At the same time, the triangular prism structure formed by the overall adjustment member and the support legs and the individual adjustment member, and the triangular structure formed by the telescopic rod, the individual adjustment member and the corresponding support legs disperse the load to each connecting component through a multi-directional force conduction path, reduce single-point stress concentration, and evenly distribute the load to the three legs, avoiding overload of a single leg, further ensuring the stability of the tripod, preventing the tripod from tilting or even tipping over, thereby ensuring the accuracy of the detection result and avoiding damage to the acre meter.

[0018] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by an urban land use measurement device provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the main stereoscopic structure of the present invention is shown.

[0021] Figure 2 A schematic diagram of the right side sectional plan structure of the present invention is shown.

[0022] Figure 3 It shows a schematic diagram of the main cross-sectional plan structure of the present invention.

[0023] Figure 4 A schematic diagram of the main view and partial cross-section plan structure of the spur gear and the rectangular housing is shown.

[0024] Figure 5 A schematic diagram of the main cross-sectional plan structure of the spur gear and the flower-shaped column is shown.

[0025] Figure 6 A schematic diagram of the main cross-sectional plan structure of the spur gear and the cylindrical block is shown.

[0026] Figure 7 A schematic diagram of the right-side sectional plan structure of the spur gear, flower-shaped column and cylindrical block is shown.

[0027] Figure 8 A schematic diagram of the main three-dimensional structure of the counterweight rod, fan-shaped ruler and rectangular rod is shown.

[0028] The above drawings include the following reference numerals: 1. tripod; 11. clamping part; 111. fixing platform; 112. rotating circular plate; 113. threaded connecting rod; 114. circular supporting plate; 115. vial; 116. two-way screw rod 1; 117. moving block; 118. squeezing plate; 119. rubber plate; 134. two-way screw rod 2; 135. clamping block; 136. control handle; 12. supporting leg; 121. support rod; 122. threaded sleeve; 123. tapered supporting foot; 124. hinge ring; 13. auxiliary frame; 131. Counterweight rod; 132. Sector ruler; 133. Rectangular rod; 14. Integral adjustment part; 141. Threaded rod; 142. Anti-slip ring; 143. Hexagonal sleeve; 144. Positioning ring; 15. Individual adjustment part; 151. Support rod; 152. Rectangular shell; 153. Contact rod; 154. Spur gear; 155. Column slot; 156. Flower-shaped column; 157. Cylindrical block; 158. Turning handle; 16. Telescopic rod; 17. Counterweight; 171. Block; 172. Lifting rope; 173. Placement plate; 174. Weight; 2. Acreage meter. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] See Figure 1An urban land use measurement device includes a tripod 1 and an acre meter 2. The acre meter 2 is placed on the tripod 1 and is used to measure urban land. The tripod 1 fixes the acre meter 2 so that it can be stably placed at a detection point of various ground conditions. The tripod 1 includes a clamping portion 11, which includes a fixing platform 111. The lower end of the clamping portion 11 is evenly hinged with supporting legs 12 along its circumference. The supporting legs 12 are provided with auxiliary portions 13 for facilitating observation of the inclination angle of the supporting legs. An integral adjustment member 14 is provided at the middle of the lower end of the clamping portion 11. The supporting legs 12 include a fixed section hingedly connected to the clamping portion 11 and an adjustment section connected to the lower end of the fixed section. The integral adjustment member 14 is connected to the fixed section. A separate adjusting piece 15 is hinged between the three legs 12, and the overall adjusting piece 14 is used to control the three legs 12 to initially open synchronously. Then, according to the ground conditions, the inclination angle of the corresponding leg 12 is adjusted by the separate adjusting piece 15, so that the clamping part 11 is finally in a horizontal state, and a triangular prism structure is always formed between the overall adjusting piece 14, the leg 12 and the separate adjusting piece 15; a telescopic rod 16 is hinged between the overall adjusting piece 15 and the adjusting section, and the telescopic rod 16, the separate adjusting piece 15 and the corresponding leg 12 form a triangular structure; a counterweight 17 is detachably provided at the hinge position of the separate adjusting piece 15 and the fixed section. The counterweight 17 is used to adjust the overall center of gravity distribution of the equipment and limit the rotation of the separate adjusting piece 15.

[0031] See Figure 2 and Figure 4 The support leg 12 includes a support rod 121. The lower end of the fixed platform 111 is evenly hinged with the support rods 121 along its circumference. The number of the support rods 121 is three. The outer end of the lower side of the support rod 121 is threadedly connected with a threaded sleeve 122. The lower end of the threaded sleeve 122 is fixedly installed with a conical support foot 123, and the conical support foot 123 is rotatably connected with a hinge ring 124.

[0032] See Figure 2 and Figure 3 The integral adjustment member 14 includes a threaded rod 141, which is fixedly installed in the middle of the lower end of the fixed platform 111, and an anti-slip ring 142 is fixedly installed at the outer end of the lower side of the threaded rod 141. A hexagonal sleeve 143 is threadedly connected to the threaded rod 141, and an annular groove is provided in the middle of the outer end of the hexagonal sleeve 143. A positioning ring 144 is rotatably connected in the annular groove. The positioning ring 144 and the bracket rod 121 are jointly provided with a separate adjustment member 15, and a telescopic rod 16 is hinged between the hinge ring 124 and the positioning ring 144.

[0033] When the distance between the support rod 121 and the tapered support foot 123 is large, the overall center of gravity of the device moves upward, which can easily cause the device to be unstable. The tapered support foot 123 and the positioning ring 144 are connected by the telescopic rod 16 to increase the path for the device to decompose gravity and prevent the device from tilting. When the legs are subjected to vertical loads or horizontal loads, the triangular prism structure formed by the integral adjustment member 14 and the support leg 12 and the individual adjustment member 15, and the triangular structure formed by the telescopic rod 16, the individual adjustment member 15 and the corresponding support leg 12 are transmitted through multi-directional force paths. The load is dispersed to each connecting component to reduce single-point stress concentration and evenly distribute the load to the three legs to avoid overloading of a single leg. When the leg is subjected to lateral force, the triangular structure composed of the telescopic rod 16, the individual adjustment member 15 and the corresponding leg 12 resists deformation through the axial tension or compression of the telescopic rod 16. The axial stiffness is much higher than the bending stiffness, which improves the structure's anti-roll capability. When adjusting the height or angle of the leg, the triangular prism and the triangular structure always maintain geometric integrity, avoiding the sudden drop in stability of the traditional connecting rod structure due to angle changes during the adjustment process.

[0034] See Figure 8 The auxiliary frame 13 includes a counterweight rod 131, a rectangular rod 133 parallel to the central axis of the support rod 121 is fixedly installed on the support rod 121, the counterweight rod 131 is hinged on the rectangular rod 133, and a sector ruler 132 with a right angle central angle is fixedly installed on the end of the counterweight rod 131 away from the threaded rod 141, and angle scale lines are set on the sector ruler 132.

[0035] When located on the ground at the detection point, first place the tripod 1 on the ground and support it with the tapered support foot 123, then rotate the hexagonal sleeve 143 to adjust the inclination angle of the support rod 121 as a whole to ensure that the support rod 121 stably supports the fixed platform 111. When it is necessary to move the tripod 1 on the horizontal ground, record the inclination angle of the rectangular rod 133 according to the sector ruler 132, that is, the inclination angle of the support rod 121, and then move the tripod 1 as a whole. At this time, continue to observe whether the rectangular rod 133 rotates slightly during the movement through the sector ruler 132. If a slight rotation occurs, adjust the corresponding inclination angle of the support rod 121 according to the sector ruler 132 to avoid the support rod 121 from rotating in an imperceptible manner to the naked eye during the transfer process, which affects the accuracy of the detection result.

[0036] See Figure 3 and Figure 4 The separate adjustment member 15 includes a support rod 151, and the outer end of the positioning ring 144 is evenly hinged with the support rod 151 along its circumference. The support rod 151 is slidably connected to a rectangular shell 152 on the side away from the threaded rod 141. A contact rod 153 is slidably connected in the rectangular shell 152 and away from the support rod 151. The end of the contact rod 153 away from the rectangular shell 152 is hinged to the corresponding bracket rod 121.

[0037] See Figure 1 、 Figure 5 、 Figure 6 and Figure 7 The contact rod 153 is evenly provided with tooth grooves in a section located inside the rectangular housing 152. A spur gear 154 is rotatably connected to the rectangular housing 152. The spur gear 154 cooperates with the tooth grooves. A column slot 155 is provided in the middle of the spur gear 154. The column slot 155 is composed of a cylindrical slot and a flower-shaped key slot. A flower-shaped column 156 is inserted into the flower-shaped key slot. A cylindrical block 157 is inserted into the cylindrical slot. The cylindrical block 157 is fixedly connected to the flower-shaped column 156. A rotating handle 158 is fixedly installed on the end of the cylindrical block 157 away from the flower-shaped column 156. The counterweight 17 includes a clamping block 171, a hanging rope 172 is installed at the lower end of the clamping block 171, and a placement plate 173 is fixedly installed at the lower end of the hanging rope 172. A weight 174 is provided on the placement plate 173, and an opening is provided on the weight 174. The clamping block 171 is provided with a clamping slot 1 for clamping connection with the fixed section and a clamping slot 2 for limiting the contact rod 153.

[0038] When the detection point is located on a non-fully horizontal ground, first rotate the hexagonal sleeve 143 to increase the inclination angle of the support rod 121 as a whole to ensure that the center of gravity of the fixed platform 111 is lowered. At this time, place the tripod 1 on a non-horizontal ground and rotate the threaded sleeve 122 as needed to change the distance between any support rod 121 and the tapered support foot 123. Drive the spur gear 154 to rotate by rotating the handle 158 as needed to change the distance between the contact rod 153 and the support rod 151, thereby changing the inclination angle of any support rod 121. During the adjustment process, observe the level bubble 115 on the circular support plate 114 to ensure that the bubble on the level bubble 115 is centered. During the adjustment process, when encountering a protrusion, the corresponding support rod 121 adjusts the inclination angle to a smaller value and the length remains unchanged, or the inclination angle is larger and the length is longer. At this time, the center of gravity will deviate to the other two support rods 121. Shift. In order to ensure the stability of the tripod 1, the block 171 is clamped on the support rod 121 with a smaller inclination angle or a longer length and the corresponding contact rod 153, and a weight 174 of appropriate weight is placed on the placement plate 173 as needed. The opening of the weight 174 is in contact with the hanging rope 172. The weight 174 of appropriate weight is used to ensure the stability of the tripod as a whole, thereby ensuring the accuracy of the test results. When encountering a depression, the corresponding support rod 121 is adjusted to a larger inclination angle and a constant length or the inclination angle remains unchanged and the length is longer. At this time, the center of gravity will shift to the support rod 121 with a larger inclination angle and a constant length or the inclination angle remains unchanged and the length is longer. In order to ensure the stability of the tripod 1, the block 171 is clamped on the other two support rods 121, and a weight 174 of appropriate weight is placed on the corresponding placement plate 173 as needed.

[0039] See Figure 1 、 Figure 2 and Figure 3 The fixed platform 111 is rotatably connected to a rotating circular plate 112 with a T-shaped cross section, and a threaded connecting rod 113 is threadedly connected to the rotating circular plate 112. A circular supporting plate 114 is fixedly installed on the upper end of the threaded connecting rod 113, and a level bubble 115 is fixedly installed on the upper end of the circular supporting plate 114. The middle part of the circular supporting plate 114 is rotatably connected to a bidirectional screw 116, and the bidirectional screw 116 is symmetrically threaded with a moving block 117 before and after. The moving block 117 is slidably connected to the circular supporting plate 114, and an extrusion plate 118 is fixedly installed on the opposite end of the moving block 117. A rubber plate 119 is fixedly installed on the opposite end of the extrusion plate 118. The middle part of the extrusion plate 118 is rotatably connected to a bidirectional screw 2 134, and the bidirectional screw 2 134 is symmetrically threaded with a clamping block 135. The clamping block 135 is slidably connected to the extrusion plate 118, and the bidirectional screw 116 and the bidirectional screw 2 134 are fixedly mounted with a control handle 136.

[0040] After the tripod 1 is installed, the acre meter 2 is placed on the circular support plate 114. By turning the control handle 136 on one of the two-way screw rods 134, the two-way screw rod 134 is driven to rotate, and the corresponding two clamping blocks 135 are driven to move toward each other, limiting the left and right sides of the acre meter 2 so that it is centered in the left and right directions. Then, the control handle 136 on the two-way screw rod 116 is turned to drive the two-way screw rod 116 to rotate, and the extrusion plates 118 are driven to move toward each other until the rubber plate 119 is in close contact with the acre meter 2. , fix the front and rear ends of the acre meter 2, and at this time, rotate the control handle 136 on the other bidirectional screw 134 to drive the corresponding two clamping blocks 135 to move toward each other, further limiting the left and right sides of the acre meter 2 to achieve the purpose of fixing the acre meter 2. Manually rotate the circular support plate 114 and the threaded connecting rod 113 to change the height of the acre meter 2. By rotating the circular plate 112, the acre meter 2 is driven to rotate, ensuring that the entire measurement area can be covered, capturing the coordinate information of key points, and ensuring the accuracy of the measurement.

[0041] It should be noted that the acre meter 2 is a laser ranging acre meter or an ultrasonic scanning acre meter. When using a laser ranging acre meter for vertex measurement, it is necessary to aim at the next vertex at the current vertex position, emit a laser to measure the distance between the two points, and record the direction through a built-in angle sensor (such as an electronic compass or inclinometer) to construct the side length and angle data of the polygon; when using an ultrasonic scanning acre meter for vertex measurement, it is necessary to slowly rotate the instrument at the vertex to allow the ultrasonic probe to scan the surrounding environment and automatically identify the positions of adjacent vertices.

[0042] In the description of the present invention, it should be understood that the terms "center", "middle", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "end", "axial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0043] Furthermore, the terms "first," "second," "number one," "number two," "one," and "two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being described. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0044] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; they may refer to mechanical or electrical connections; they may refer to direct or indirect connections via an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An urban land use measurement device, characterized in that , including tripod and acre measuring instrument; The tripod comprises a clamping portion, the lower end of which is evenly hinged with legs along its circumference, the legs being provided with auxiliary portions for facilitating observation of the inclination angle of the legs, and an integral adjustment member being provided in the middle of the lower end of the clamping portion; The supporting leg includes a fixed section hingedly connected to the clamping portion and an adjusting section connected to the lower end of the fixed section; A separate adjusting member is hingedly connected between the integral adjusting member and the fixed section. The integral adjusting member is used to control the three legs to initially and synchronously open. Then, according to the ground conditions, the inclination angles of the corresponding legs are adjusted through the separate adjusting member, so that the clamping part is finally in a horizontal state. A triangular prism structure is always formed between the integral adjusting member, the legs, and the separate adjusting member. A telescopic rod is hinged between the integral adjusting member and the adjusting section, and the telescopic rod, the individual adjusting member and the corresponding legs form a triangular structure; The hinged position between the separate adjustment part and the fixed section is detachably provided with a counterweight, which is used to adjust the overall center of gravity distribution of the equipment, reduce single-point stress concentration, and ensure the stability of the tripod.

2. The urban land use measurement device according to claim 1, characterized in that: The clamping part includes a fixed platform, on which a rotating circular plate with a T-shaped cross section is rotatably connected, a threaded connecting rod is threadedly connected to the rotating circular plate, a circular supporting plate is fixedly installed on the upper end of the threaded connecting rod, and a level bubble is fixedly installed on the upper end of the circular supporting plate.

3. The urban land use measurement device according to claim 2, characterized in that: The middle part of the circular support plate is rotatably connected with a bidirectional screw rod 1, and the bidirectional screw rod 1 is symmetrically threaded with a moving block in front and back. The moving block is slidably connected to the circular support plate. The opposite ends of the moving block are fixedly installed with extrusion plates, and the opposite ends of the extrusion plates are fixedly installed with rubber plates.

4. The urban land use measurement device according to claim 3, characterized in that: The middle part of the extrusion plate is rotatably connected with a bidirectional screw rod 2, and the bidirectional screw rod 2 is symmetrically threadedly connected with a clamping block. The clamping block and the extrusion plate are slidably connected, and both the bidirectional screw rod 1 and the bidirectional screw rod 2 are fixedly installed with a control handle.

5. The urban land use measurement device according to claim 2, characterized in that: The support leg includes a support rod, and the lower end of the fixed platform is evenly hinged with support rods along its circumference. The number of the support rods is three, and the outer end of the lower side of the support rod is threadedly connected to a threaded sleeve. The lower end of the threaded sleeve is fixedly installed with a conical support foot, and the conical support foot is rotatably connected to a hinge ring.

6. The urban land use measurement device according to claim 5, characterized in that: The integral adjustment part includes a threaded rod, a threaded rod is fixedly installed in the middle of the lower end of the fixed platform, an anti-slip ring is fixedly installed at the lower outer end of the threaded rod, a hexagonal sleeve is threadedly connected to the threaded rod, an annular groove is provided in the middle of the outer end of the hexagonal sleeve, a positioning ring is rotatably connected in the annular groove, the positioning ring and the bracket rod are jointly provided with a separate adjustment part, and a telescopic rod is hinged between the hinge ring and the positioning ring.

7. The urban land use measurement device according to claim 6, characterized in that: The auxiliary part includes a counterweight rod, a rectangular rod parallel to the central axis of the bracket rod is fixedly installed on the bracket rod, a counterweight rod is hinged on the rectangular rod, and a sector ruler with a right central angle is fixedly installed on the end of the counterweight rod away from the threaded rod, and angle scale lines are set on the sector ruler.

8. The urban land use measurement device according to claim 5, characterized in that: The separate adjustment part includes a support rod, the outer end of the positioning ring is evenly hinged with the support rod along its circumference, the support rod is slidably connected to a rectangular shell on the side away from the threaded rod, a contact rod is slidably connected inside the rectangular shell and on the side away from the support rod, and the contact rod is hinged to the corresponding bracket rod at one end away from the rectangular shell.

9. The urban land use measurement device according to claim 8, characterized in that: A section on the contact rod located in the rectangular shell is evenly provided with tooth grooves, a spur gear is rotatably connected in the rectangular shell, and the spur gear cooperates with the tooth grooves, the counterweight includes a clamping block, a lifting rope is installed at the lower end of the clamping block, a placement plate is fixedly installed at the lower end of the lifting rope, a weight is provided on the placement plate, an opening is provided on the weight, and a clamping slot 1 for clamping and connecting with the fixed section and a clamping slot 2 for limiting the contact rod are provided on the clamping block.

10. The urban land use measurement device according to claim 9, characterized in that: A column insertion groove is opened in the middle of the spur gear, and the column insertion groove is composed of a cylindrical groove and a flower-shaped key groove. A flower-shaped column is inserted in the flower-shaped key groove, and a cylindrical block is inserted in the cylindrical groove. The cylindrical block is fixedly connected to the flower-shaped column, and a rotating handle is fixedly installed on the end of the cylindrical block away from the flower-shaped column.

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