Positioning device for urban planning topographic survey

Abstract

The invention relates to a positioning device for urban planning topographic survey, and relates to the technical field of topographic survey equipment, the positioning device comprises a mounting body, a mounting plate, a mounting assembly, a leveling assembly and a locking assembly; a supporting telescopic rod and a metering telescopic rod are arranged at the bottom of the mounting body; the number of the supporting telescopic rods is at least three, and the fixed ends of the supporting telescopic rods are hinged to the installation body. The fixed end of the metering telescopic rod is fixedly connected with the mounting body; the surveying instrument is rotationally arranged on the mounting plate; the mounting assembly is arranged on the mounting body and is used for mounting the mounting plate on the mounting body; the leveling assembly is arranged on the mounting body and is used for enabling the surveying instrument to keep a horizontal state in a self-adaptive manner; the locking assembly is arranged on the surveying instrument and used for locking the surveying instrument after the surveying instrument is in the horizontal state. According to the invention, landform survey can be conveniently carried out on a city.

Description

Technical Field

[0001] This application relates to the technical field of topographic surveying equipment, and in particular to a positioning device for urban planning topographic surveying. Background Art

[0002] During the urban planning process, topographic surveying is a crucial link. Through topographic surveying, key data such as the undulation, slope, and direction of the ground can be obtained, providing accurate geographical information for urban planning and construction.

[0003] Currently, during topographic surveying, the surveying instrument is horizontally installed at the position to be surveyed, and then the surrounding terrain is surveyed.

[0004] During the above-mentioned topographic surveying, it is necessary to manually level the surveying instrument with a level, and the operation is cumbersome. Especially under complex terrain conditions such as slopes, every time the surveying direction or fixed height of the surveying instrument is adjusted, the operator needs to level it once, which seriously affects the efficiency of topographic surveying and brings great inconvenience to topographic surveying. Summary of the Invention

[0005] In order to facilitate topographic surveying of cities, this application provides a positioning device for urban planning topographic surveying.

[0006] A positioning device for urban planning topographic surveying provided by this application adopts the following technical solution: A positioning device for urban planning topographic surveying includes an installation body, an installation plate, an installation component, a leveling component, and a locking component; a support telescopic rod and a measurement telescopic rod are arranged at the bottom of the installation body; at least three support telescopic rods are provided, and the fixed ends of the support telescopic rods are hinged to the installation body; the fixed end of the measurement telescopic rod is fixedly connected to the installation body; the surveying instrument is rotatably arranged on the installation plate; the installation component is arranged on the installation body and is used to install the installation plate on the installation body; the leveling component is arranged on the installation body and is used to adaptively keep the surveying instrument in a horizontal state; the locking component is arranged on the surveying instrument and is used to lock the surveying instrument after the surveying instrument is in a horizontal state.

[0007] By adopting the above technical solution, when surveying the urban terrain in a complex environment, after the operator reaches the position to be surveyed, the installation body is fixedly installed on the road surface by using the support telescopic rod and the measuring telescopic rod. Then, the surveying instrument and the mounting plate are installed on the installation body by using the mounting assembly. Then, the lengths of the support telescopic rod and the measuring telescopic rod can be adjusted, so as to adjust the height of the surveying instrument from the road surface. The surveying instrument can also be rotated relative to the mounting plate, so as to adjust the surveying direction of the surveying instrument. After the adjustment is completed, the leveling assembly starts to work, automatically levels the surveying instrument, and keeps the surveying instrument in a horizontal state, without the need for manual leveling and positioning every time the height and angle of the surveying instrument are adjusted, thus facilitating the topographic survey of the city. Then, the surveying instrument is locked by using the locking assembly, so that when the operator operates the surveying instrument for surveying, the surveying instrument can maintain a horizontal state.

[0008] Optionally, the installation body is of a cavity structure, and a suspension liquid is preset in the installation body; the leveling assembly includes a floating plate, a first slider, a second slider and a support rod; the floating plate is located inside the installation body; at least four first sliders are provided, and they are evenly arranged in the circumferential direction of the rotation axis of the surveying instrument. The first slider is located on the top of the floating plate and is slidably connected to the floating plate; at least four second sliders are provided, and they correspond to the first sliders one by one. The second slider is connected to the mounting plate, and the second slider can slide relative to the mounting plate; at least four support rods are provided, and they correspond to the first sliders one by one. The support rod penetrates through the installation body, and both ends of the support rod are ball-jointed to the first slider and the second slider respectively.

[0009] By adopting the above technical solution, during the survey of the urban terrain in a complex environment, after the operator adjusts the height and direction of the surveying instrument, the surveying instrument is released. Since the liquid level of the suspension liquid always remains horizontal, the floating plate always remains in a horizontal state. During the process of the floating plate rotating to the horizontal state, the support rod slides relative to the installation body, and the sliding axis is parallel to the axis of the installation body, and the angles between the support rod and the floating plate and the mounting plate will both change, so that the mounting plate and the surveying instrument also remain in a horizontal state, thus realizing the automatic alignment of the surveying instrument. By providing at least four support rods, the floating plate and the surveying instrument can adapt to the changes in the ground angles in at least four directions, so as to better keep the surveying instrument in a horizontal state.

[0010] Optionally, the installation body includes an incomplete spherical shell, a top plate and a bottom plate; both the top plate and the bottom plate are fixedly connected to the incomplete spherical shell; the side wall of the floating plate abuts against the incomplete spherical shell, and the floating plate divides the interior of the installation body into an upper cavity and a lower cavity, and the suspension liquid fills the lower cavity; the support rod penetrates through the top plate and is slidably connected to the top plate.

[0011] By adopting the above technical solution, the floating plate floats inside the incomplete spherical shell, dividing the installation body into a changing upper cavity and a lower cavity. The suspension liquid is always in the lower cavity. Since the installation body is composed of an incomplete spherical shell, a top plate and a bottom plate, the floating angle of the floating plate is restricted, preventing the suspension liquid from leaking through the support rod chute on the top plate. As a result, the suspension liquid can always fill the lower cavity, ensuring that the suspension liquid can accurately keep the floating plate horizontal, and thus keeping the surveying instrument horizontal.

[0012] Optionally, a hinged spherical shell is fixedly arranged on the mounting plate; a sphere is arranged inside the hinged spherical shell; a connecting rod is fixedly arranged on the sphere, the connecting rod is connected to the top plate, and the axis of the connecting rod is arranged along the axis direction of the installation body.

[0013] By adopting the above technical solution, since the axis of the connecting rod is always coaxial with the axis of the incomplete spherical shell, the center of the mounting plate is always on the axis of the installation body, so that the surveying instrument will not move relative to the installation body in the horizontal direction. This ensures that when the operator operates the surveying instrument to survey the urban terrain, the surveying instrument is in a fixed state, facilitating the terrain survey of the city.

[0014] Using an incomplete spherical shell makes the center of the floating plate always coincide with the center of the incomplete spherical shell, and the axis of the connecting rod is always coaxial with the axis of the incomplete spherical shell. Therefore, the distance between the surveying instrument and the ground is the sum of the height of the installation body, the distance between the installation body and the mounting plate, the thickness of the mounting plate, and the length of the metering telescopic rod. Among them, the height of the installation body, the distance between the installation body and the mounting plate, and the thickness of the mounting plate are all fixed values. Therefore, the operator only needs to know the extended length of the metering telescopic rod to obtain the distance between the surveying instrument and the ground, which is convenient for recording survey data and thus facilitating the terrain survey of the city.

[0015] Optionally, at least four connecting grooves are formed on the mounting plate, and the connecting grooves correspond to the second sliders one by one; the installation assembly includes a first magnetic block, a second magnetic block and a third magnetic block; at least four first magnetic blocks are provided, and the first magnetic blocks correspond to the second sliders one by one. The first magnetic blocks are slidably arranged in the connecting grooves; the second sliders are made of magnetic materials, and there is a mutual attraction between the second sliders and the first magnetic blocks; the second magnetic block is fixedly arranged on the top plate; the third magnetic block is fixedly connected to the connecting rod, and there is a mutual attraction between the third magnetic block and the second magnetic block.

[0016] By adopting the above technical solution, after the operator fixedly installs the installation body, the installation plate is moved to the top of the installation body. Under the mutual attraction of the first magnet and the second slider and the mutual attraction of the second magnet and the third magnet, the installation plate and the surveying instrument are installed on the installation body, realizing the quick disassembly and assembly of the surveying instrument, simplifying the installation steps of the surveying instrument, and thus facilitating the topographic survey of the city.

[0017] Optionally, a threaded hole is provided on the articulated spherical shell; the locking assembly includes a fixing bolt and a knob; the fixing bolt is inserted into the threaded hole and is threadedly connected to the threaded hole; the knob is fixedly connected to the fixing bolt.

[0018] By adopting the above technical solution, after the surveying instrument is leveled and positioned, the operator rotates the knob, and the knob drives the fixing bolt to rotate. During the rotation process, the fixing bolt gradually moves towards the direction close to the sphere relative to the articulated spherical shell and abuts against the sphere, thereby fixing the sphere and fixing the surveying instrument in a horizontal state.

[0019] Optionally, a fixing assembly is provided on the metering telescopic rod, and the fixing assembly includes a fixing telescopic rod and a fixing spring; the fixed end of the fixing telescopic rod is fixedly connected to the movable end of the metering telescopic rod; the movable end of the fixing telescopic rod divides the inner part of the fixed end of the fixing telescopic rod into a rod chamber and a rodless chamber; the fixing spring is fixedly arranged in the rodless chamber, and the fixing spring is always in a compressed state; an adjusting assembly is provided on the metering telescopic rod, and the adjusting assembly is used to adjust the telescopic state of the fixing telescopic rod.

[0020] By adopting the above technical solution, in the initial state, the fixing telescopic rod is in an extended state by using the fixing spring, and the movable end of the fixing telescopic rod abuts against the inner wall of the fixed end of the metering telescopic rod, so that the metering telescopic rod is in a non-telescopic state. When the operator needs to adjust the distance between the surveying instrument and the ground, the fixing telescopic rod is contracted through the adjusting assembly, so that the metering telescopic rod is in a telescopic state, and the distance between the surveying instrument and the ground can be adjusted. The metering telescopic rod is fixed by using the fixing assembly, avoiding the telescopic movement of the metering telescopic rod when the operator operates the surveying instrument for surveying, which affects the accuracy of the survey, and thus facilitating the topographic survey of the city.

[0021] Optionally, the adjusting assembly includes an airbag and a connecting pipe; the airbag is fixedly arranged at the bottom of the metering telescopic rod, and the airbag is made of an elastic material; both ends of the connecting pipe are communicated with the airbag and the rod chamber respectively.

[0022] By adopting the above technical solution, when an operator needs to adjust the distance between the surveying instrument and the ground, the airbag is stepped on, so that the gas in the airbag enters the rod cavity through the connecting pipe, causing the fixed telescopic rod to contract, so that the measuring telescopic rod is in a telescopic state. After the adjustment is completed, the operator releases the airbag. Under the action of the self-elastic force of the airbag and the fixed spring, the fixed telescopic rod extends, and the movable end of the fixed telescopic rod abuts against the inner wall of the fixed end of the measuring telescopic rod, so that the measuring telescopic rod is in a non-telescopic state, realizing the adjustment of the telescopic state of the fixed telescopic rod.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: By setting the leveling component, the surveying instrument is automatically leveled to keep the surveying instrument in a horizontal state, and then the surveying instrument is locked by the locking component. When the operator operates the surveying instrument for surveying, the surveying instrument can be self-adaptively leveled and positioned and then locked, without the need for manual leveling and positioning every time the height and angle of the surveying instrument are adjusted, thus facilitating the topographic survey of the city; By setting the special shape of the installation body, using the floating of the floating plate in the incomplete spherical shell, the installation body is divided into a changing upper cavity and a lower cavity. The suspension liquid is always in the lower cavity, and since the installation body is composed of an incomplete spherical shell, a top plate and a bottom plate, the floating angle of the floating plate is restricted to prevent the suspension liquid from leaking through the support rod chute on the top plate, so that the suspension liquid can always fill the lower cavity, ensuring that the suspension liquid can accurately keep the floating plate horizontal, so that the surveying instrument is kept horizontal; By setting the fixing component, the measuring telescopic rod is fixed to prevent the measuring telescopic rod from telescoping when the operator operates the surveying instrument for surveying, which affects the accuracy of the survey, thus facilitating the topographic survey of the city; when the operator needs to adjust the distance between the surveying instrument and the ground, the fixed telescopic rod is contracted through the adjusting component, so that the measuring telescopic rod is in a telescopic state, and the distance between the surveying instrument and the ground can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of an embodiment of the present application; Figure 2 is a cross-sectional view of an embodiment of the present application; Figure 3 is Figure 2 a partial enlarged view of part A in Figure 4 is Figure 2 a partial enlarged view of part B in

[0025] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Surveying instrument; 2. Mounting body; 21. Support telescopic rod; 22. Measuring telescopic rod; 23. Incomplete spherical shell; 24. Top plate; 25. Bottom plate; 26. Upper cavity; 27. Lower cavity; 3. Mounting plate; 31. Hinged spherical shell; 32. Sphere; 33. Connecting rod; 34. Connecting groove; 4. Mounting assembly; 41. First magnet; 42. Second magnet; 43. Third magnet; 5. Levelling assembly; 51. Floating plate; 52. First slider; 53. Second slider; 54. Support rod; 6. Locking assembly; 61. Fixed bolt; 62. Knob; 7. Fixing assembly; 71. Fixed telescopic rod; 711. Rod chamber; 712. Rodless chamber; 72. Fixed spring; 8. Adjusting assembly; 81. Airbag; 82. Connecting pipe. Detailed implementation manners

[0026] The following will further describe the present application in detail with reference to the Figures 1-4 accompanying drawings.

[0027] The embodiment of the present application discloses a positioning device for urban planning terrain surveying. Referring to Figure 1 and Figure 2 , a positioning device for urban planning terrain surveying is used to position the surveying instrument 1 and level the surveying instrument 1 automatically. It includes a mounting body 2, and the mounting body 2 includes an incomplete spherical shell 23, a top plate 24 and a bottom plate 25. The incomplete spherical shell 23 is made of a transparent material, and a scale disk is provided on the incomplete spherical shell 23. The top plate 24 is coaxially arranged at the top of the incomplete spherical shell 23 and is fixedly connected to the incomplete spherical shell 23. The bottom plate 25 is coaxially arranged at the bottom of the incomplete spherical shell 23 and is fixedly connected to the incomplete spherical shell 23. The incomplete spherical shell 23, the bottom plate 25 and the top plate 24 together form a mounting body 2 with a cavity structure.

[0028] Referring to Figure 1 and Figure 2 , a support telescopic rod 21 and a measuring telescopic rod 22 are arranged at the bottom of the mounting body 2. There are three support telescopic rods 21, and they are evenly arranged along the circumference of the mounting body 2. The fixed end of the support telescopic rod 21 is hinged to the bottom of the bottom plate 25. The bottom of the movable end of the support telescopic rod 21 is a conical structure. There is a large frictional force between the fixed end and the movable end of the support telescopic rod 21, and it needs to be stretched or contracted under the action of an external force.

[0029] The measuring telescopic rod 22 is coaxially arranged at the bottom of the bottom plate 25. The fixed end of the measuring telescopic rod 22 is fixedly connected to the bottom wall of the bottom plate 25. A scale disk is provided on the movable end of the measuring telescopic rod 22, and this scale disk is arranged along the length direction of the measuring telescopic rod 22.

[0030] Referring toFigure 2 and Figure 3 , a fixing assembly 7 is provided on the metering telescopic rod 22. The fixing assembly 7 includes a fixing telescopic rod 71 and a fixing spring 72. The axial direction of the fixing telescopic rod 71 is perpendicular to the axial direction of the metering telescopic rod 22. The fixed end of the fixing telescopic rod 71 is fixedly arranged inside the movable end of the metering telescopic rod 22. The movable end of the fixing telescopic rod 71 is inserted into the movable end of the metering telescopic rod 22 and is slidably connected to the movable end of the metering telescopic rod 22. The movable end of the fixing telescopic rod 71 divides the inner part of the fixed end of the metering telescopic rod 22 into a rod chamber 711 and a rodless chamber 712. The fixing spring 72 is located in the rodless chamber 712. The length direction of the fixing spring 72 is the same as the length direction of the fixing telescopic rod 71. Both ends of the fixing spring 72 are fixedly connected to the fixed end and the movable end of the fixing telescopic rod 71 respectively. The fixing spring 72 is always in a compressed state.

[0031] Referring to Figure 2 and Figure 3 , an adjusting assembly 8 is provided on the metering telescopic rod 22. The adjusting assembly 8 includes an airbag 81 and a connecting pipe 82. The airbag 81 is fixedly connected to the bottom of the movable end of the metering telescopic rod 22 through a connecting plate. The airbag 81 is made of an elastic material and a gas is preset inside the airbag 81. The connecting pipe 82 is arranged inside the movable end of the metering telescopic rod 22. Both ends of the connecting pipe 82 are communicated with the inside of the airbag 81 and the rod chamber 711 respectively.

[0032] In the initial state, the metering telescopic rod 22 is at the maximum extended length, the supporting telescopic rod 21 is in a contracted state, the length of the supporting telescopic rod 21 is less than the length of the metering telescopic rod 22, the fixing telescopic rod 71 is in an extended state under the action of the fixing spring 72, and the movable end of the fixing telescopic rod 71 abuts against the inner wall of the fixed end of the metering telescopic rod 22, so that the length of the metering telescopic rod 22 is fixed.

[0033] When surveying complex urban terrains, after the operator arrives at the position to be surveyed, first place the movable end of the metering telescopic rod 22 on the ground, rotate and adjust the three supporting telescopic rods 21 to a certain angle, then step on the airbag 81, so that the airbag 81 is compressed by the force. The gas inside the airbag 81 enters the rod chamber 711 through the connecting pipe 82, causing the fixed telescopic rod 71 to contract. The movable end of the fixed telescopic rod 71 moves away from the inner wall of the fixed end of the metering telescopic rod 22, making the metering telescopic rod 22 in a telescopic state. Then the operator presses down on the installation body 2, causing the metering telescopic rod 22 to gradually contract. The supporting telescopic rods 21 move downward with the installation plate 3 until the cone at the bottom of the movable end of the supporting telescopic rod 21 inserts into the ground. Then the operator releases the airbag 81. Under the action of the elastic force of the airbag 81 itself and the fixed spring 72, the fixed telescopic rod 71 extends, and the movable end of the fixed telescopic rod 71 abuts against the inner wall of the fixed end of the metering telescopic rod 22, thus making the metering telescopic rod 22 in a non-telescopic state, and then fixedly installing the installation body 2. The frictional force between the fixed end and the movable end of the supporting telescopic rod 21 provides the supporting force for the installation body 2 in three directions.

[0034] In some other embodiments, an installation flange is provided at the bottom of the movable end of the supporting telescopic rod 21, and the operator can use anchor bolts to fix the supporting telescopic rod 21 to the ground. In this embodiment, a pedal is hinged at the bottom of the movable end of the metering telescopic rod 22. The pedal is located on top of the airbag 81, and the operator can step on the pedal to contract the airbag 81. In some other embodiments, both the pedal and the airbag 81 are provided on a sleeve. The sleeve is rotatably connected to the bottom of the metering telescopic rod 22. The pedal is hinged to the sleeve, and the airbag 81 is fixedly connected to the sleeve. The operator can rotate the sleeve to facilitate stepping on the airbag 81 in different orientations.

[0035] Refer to Figure 2 and Figure 4 As shown in FIGS.

[0036] Refer to Figure 2 and Figure 4 As shown in FIGS.

[0037] After the installation body 2 is fixedly installed at the position to be surveyed, the operator uses the installation component 4 to install the surveying instrument 1 and the mounting plate 3 on the installation body 2. Then, the installation body 2 can be rotated relative to the mounting plate 3. Referring to the dial on the mounting plate 3, the orientation of the surveying instrument 1 is adjusted so that the surveying instrument 1 faces the direction to be surveyed. Then, the operator can step on the airbag 81 to make the metering telescopic rod 22 in a telescopic state, and then move the installation body 2 up or down. Referring to the dial on the metering telescopic rod 22, the surveying instrument 1 is adjusted to a suitable position. After the position of the surveying instrument 1 is adjusted, the surveying instrument 1 is leveled by the leveling component 5 to keep the surveying instrument 1 in a horizontal state, and then the surveying instrument 1 is locked by the locking component 6, and then the surveying can be started.

[0038] Referring to Figure 2 and Figure 4 The leveling component 5 includes a floating plate 51, a first slider 52, a second slider 53 and a support rod 54. The floating plate 51 is arranged inside the installation body 2. The floating plate 51 divides the interior of the installation body 2 into an upper cavity 26 and a lower cavity 27. The lower cavity 27 is filled with a suspension liquid, and the buoyancy of the suspension liquid can make the mounting plate 3 and the surveying instrument 1 float. There are eight first sliders 52, which are evenly arranged along the circumferential direction of the axis of the installation body 2. The first slider 52 is located on the top of the floating plate 51 and is slidably connected to the floating plate 51, and the sliding axes all intersect with the axis of the floating plate 51. There are eight second sliders 53, which correspond to the first sliders 52 one by one. The second sliders 53 are evenly arranged along the circumferential direction of the axis of the mounting plate 3. There are eight support rods 54, which are evenly arranged along the circumferential direction of the axis of the installation body 2. The support rods 54 correspond to the first sliders 52 one by one. One end of the support rod 54 is located inside the installation body 2 and is ball-jointed to the first slider 52. The support rod 54 passes through the top plate 24 and is slidably connected to the top plate 24, and the sliding axis is parallel to the axis of the installation body 2. The other end of the support rod 54 is located outside the installation body 2 and is ball-jointed to the second slider 53.

[0039] Referring to Figure 2 and Figure 4 At the bottom of the mounting plate 3, a hinge spherical shell 31 is fixedly arranged, and the opening direction of the hinge spherical shell 31 is away from the mounting plate 3. A sphere 32 is arranged inside the hinge spherical shell 31. A connecting rod 33 is fixedly arranged on the sphere 32, and the length direction of the connecting rod 33 is the same as the axis direction of the installation body 2.

[0040] Eight connecting grooves 34 are formed at the bottom of the mounting plate 3. The connecting grooves 34 correspond to the second sliders 53 one by one, and the eight connecting grooves 34 are evenly arranged along the circumferential direction of the axis of the mounting plate 3.

[0041] Referring to Figure 2 and Figure 4, the installation component 4 includes a first magnetic block 41, a second magnetic block 42 and a third magnetic block 43. There are eight first magnetic blocks 41, which correspond to the second sliders 53 one by one. The first magnetic blocks 41 are slidably arranged in the connecting grooves 34, and the sliding axes are arranged along the length direction of the connecting grooves 34. The second sliders 53 are made of magnetic material, and there is an attractive force between the second sliders 53 and the first magnetic blocks 41. The second magnetic block 42 is fixedly arranged on the top of the top plate 24. The third magnetic block 43 is fixedly connected to the end of the connecting rod 33 away from the sphere 32, and the connecting rod 33 is perpendicular to the third magnetic block 43. There is an attractive force between the third magnetic block 43 and the second magnetic block 42.

[0042] Threaded holes are formed in the hinged spherical shell 31. The locking component 6 includes a fixing bolt 61 and a knob 62. The fixing bolt 61 is inserted into the threaded hole and is threadedly connected to the hinged spherical shell 31. The knob 62 is fixedly connected to the fixing bolt 61, and the knob 62 is rotatably connected to the mounting plate 3. The rotation axis is coaxial with the axis of the threaded hole.

[0043] When surveying complex urban terrains, after the operator fixedly installs the installation body 2 at the position to be surveyed, the surveying instrument 1 and the mounting plate 3 are placed on the top of the installation body 2, so that the first magnetic block 41 is close to the second slider 53, and the third magnetic block 43 is close to the second magnetic block 42, so that the first magnetic block 41 and the second slider 53 attract each other, and the third magnetic block 43 and the second magnetic block 42 attract each other, and the surveying instrument 1 and the mounting plate 3 are fixedly installed on the installation body 2.

[0044] After the surveying instrument 1 is installed, under the action of the suspension liquid, the floating plate 51 remains horizontal. Since the support rod 54 always remains perpendicular to the top plate 24, and the first slider 52 can slide relative to the floating plate 51, the second slider 53 and the first magnetic block 41 can slide relative to the mounting plate 3, and both ends of the support rod 54 are spherical hinges with the first slider 52 and the second slider 53 respectively, so that the mounting plate 3 and the surveying instrument 1 can remain horizontal with the floating plate 51, realizing the leveling and positioning of the surveying instrument 1. By setting eight support rods 54, the floating plate 51 and the surveying instrument 1 can adapt to the ground angle changes in all directions, so that the surveying instrument 1 can better remain horizontal.

[0045] After the operator finishes installing the survey instrument 1 and waits for a certain period of time until the survey instrument 1 is leveled and positioned, by rotating the knob 62, the fixing bolt 61 can be driven to rotate in the threaded hole, so that it tightly abuts against the sphere 32, locking the survey instrument 1 in the current position and keeping the survey instrument 1 horizontally fixed. And since the axis of the connecting rod 33 is always coaxial with the axis of the incomplete spherical shell 23, the center of the mounting plate 3 is always on the axis of the mounting body 2, so that the survey instrument 1 will not move relative to the mounting body 2 in the horizontal direction, ensuring that the survey instrument 1 is in a fixed state when the operator operates the survey instrument 1 to survey the urban terrain.

[0046] Since the axis of the connecting rod 33 is always coaxial with the axis of the incomplete spherical shell 23, and the support rods 54 are uniformly arranged circumferentially along the axis of the connecting rod 33, after the survey instrument 1 is leveled and positioned, the distance between the survey instrument 1 and the bottom of the metering telescopic rod 22 is the sum of the height of the mounting body 2, the distance between the mounting body 2 and the mounting plate 3, the thickness of the mounting plate 3, and the length of the metering telescopic rod 22. Among them, the height of the mounting body 2, the distance between the mounting body 2 and the mounting plate 3, and the thickness of the mounting plate 3 are all fixed values. The operator only needs to obtain the distance between the survey instrument 1 and the ground at this time according to the scale on the movable end of the metering telescopic rod 22, and combine the angle between the floating plate 51 and the bottom plate 25 of the mounting body 2 shown on the scale on the incomplete spherical shell 23 and the height at the position where the survey instrument 1 is located, then the height of the survey instrument 1 at this time can be obtained.

[0047] The implementation principle of the positioning device for urban planning terrain survey in the embodiment of the present application is as follows: When surveying the urban terrain with complex environment, after the operator arrives at the position to be surveyed, first place the movable end of the metering telescopic rod 22 on the ground, rotate and adjust the three support telescopic rods 21 to a certain angle, then step on the airbag 81, so that the airbag 81 is compressed by the force. The gas inside the airbag 81 enters the rod chamber 711 through the connecting pipe 82, causing the fixed telescopic rod 71 to contract. The movable end of the fixed telescopic rod 71 moves away from the inner wall of the fixed end of the metering telescopic rod 22, making the metering telescopic rod 22 in a telescopic state. Then the operator presses down the mounting body 2, causing the metering telescopic rod 22 to gradually contract, and the support telescopic rods 21 move downward with the mounting plate 3 until the cone at the bottom of the movable end of the support telescopic rod 21 inserts into the ground. Then the operator releases the airbag 81. Under the action of the self-elastic force of the airbag 81 and the elastic force of the fixed spring 72, the fixed telescopic rod 71 extends, and the movable end of the fixed telescopic rod 71 abuts against the inner wall of the fixed end of the metering telescopic rod 22, so that the metering telescopic rod 22 is in a non-telescopic state, thus fixedly installing the mounting body 2, and using the friction between the fixed end and the movable end of the support telescopic rod 21 to provide support forces in three directions for the mounting body 2.

[0048] After the installation body 2 is fixedly installed at the position to be surveyed, the survey instrument 1 and the mounting plate 3 are placed on the top of the installation body 2, so that the first magnet 41 is close to the second slider 53, and the third magnet 43 is close to the second magnet 42, so that the first magnet 41 and the second slider 53 attract each other, and the third magnet 43 and the second magnet 42 attract each other, and the survey instrument 1 and the mounting plate 3 are fixedly installed on the installation body 2. Then, the installation body 2 and the mounting plate 3 can be rotated relative to each other. Referring to the dial on the mounting plate 3, the orientation of the survey instrument 1 is adjusted so that the survey instrument 1 faces the direction to be surveyed. Then the operator can step on the airbag 81 to make the metering telescopic rod 22 in a telescopic state, and then move the installation body 2 up or down. Referring to the dial on the metering telescopic rod 22, the survey instrument 1 is adjusted to a proper position.

[0049] After the position of the survey instrument 1 is adjusted, under the action of the suspension liquid, the floating plate 51 remains horizontal. Since the support rod 54 always remains perpendicular to the top plate 24, and the first slider 52 can slide relative to the floating plate 51, the second slider 53 and the first magnet 41 can slide relative to the mounting plate 3, and both ends of the support rod 54 are spherical hinges with the first slider 52 and the second slider 53 respectively, so that the mounting plate 3 and the survey instrument 1 can remain horizontal with the floating plate 51. Then the knob 62 is rotated to drive the fixing bolt 61 to rotate in the threaded hole, so that it tightly abuts against the sphere 32, and the survey instrument 1 is locked at the current position, so that the survey instrument 1 is horizontally fixed.

[0050] Since the axis of the connecting rod 33 is always coaxial with the axis of the incomplete spherical shell 23, the center of the mounting plate 3 is always on the axis of the installation body 2, so that the survey instrument 1 will not move relative to the installation body 2 in the horizontal direction, ensuring that the survey instrument 1 is in a fixed state when the operator operates the survey instrument 1 to survey the urban terrain.

[0051] After the survey is completed, the operator can rotate the direction of the survey instrument 1 and adjust the length of the metering telescopic rod 22 to continue surveying different heights and different directions at this position.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A positioning device for urban planning topographic survey, used for leveling and positioning a surveying instrument (1), characterized in that: The invention comprises a mounting body (2), a mounting plate (3), a mounting assembly (4), a leveling assembly (5) and a locking assembly (6); a supporting telescopic rod (21) and a metering telescopic rod (22) are arranged at the bottom of the mounting body (2); at least three supporting telescopic rods (21) are arranged, and the fixed ends of the supporting telescopic rods (21) are hinged to the mounting body (2); the fixed ends of the metering telescopic rods (22) are fixedly connected to the mounting body (2); the surveying instrument (1) is rotatably arranged on the mounting plate (3); the mounting assembly (4) is arranged on the mounting body (2) and is used to mount the mounting plate (3) on the mounting body (2); the leveling assembly (5) is arranged on the mounting body (2) and is used to enable the surveying instrument (1) to adaptively maintain a horizontal state; the locking assembly (6) is arranged on the surveying instrument (1) and is used to lock the surveying instrument (1) after the surveying instrument (1) is in a horizontal state.

2. A positioning device for urban planning topographic survey according to claim 1, characterized in that: The mounting body (2) is a hollow structure, and a suspension is preset in the mounting body (2); the leveling assembly (5) comprises a floating plate (51), a first sliding block (52), a second sliding block (53), and a support rod (54); the floating plate (51) is located inside the mounting body (2); at least four first sliding blocks (52) are provided and are evenly arranged along the circumference of the rotation axis of the surveying instrument (1); the first sliding block (52) is located on the top of the floating plate (51) and is slidably connected to the floating plate (51); the second At least four sliders (53) are provided and correspond one-to-one with the first sliders (52); the second sliders (53) are connected to the mounting plate (3), and the second sliders (53) can slide relative to the mounting plate (3); at least four support rods (54) are provided and correspond one-to-one with the first sliders (52); the support rods (54) are passed through the mounting body (2), and two ends of the support rods (54) are respectively ball-jointed with the first slider (52) and the second slider (53).

3. A positioning device for urban planning topographic survey according to claim 2, characterized in that: The mounting body (2) comprises an incomplete spherical shell (23), a top plate (24) and a bottom plate (25); the top plate (24) and the bottom plate (25) are both fixedly connected to the incomplete spherical shell (23); the side wall of the floating plate (51) abuts against the incomplete spherical shell (23), and the floating plate (51) divides the interior of the mounting body (2) into an upper cavity (26) and a lower cavity (27), and the suspension fills the lower cavity (27); the support rod (54) is passed through the top plate (24) and is slidably connected to the top plate (24).

4. A positioning device for urban planning topographic survey according to claim 3, characterized in that: A hinged ball shell (31) is fixedly arranged on the mounting plate (3); a ball (32) is arranged inside the hinged ball shell (31); a connecting rod (33) is fixedly arranged on the ball (32), the connecting rod (33) is connected to the top plate (24), and the axis of the connecting rod (33) is arranged along the axis direction of the mounting body (2).

5. A positioning device for urban planning topographic survey according to claim 4, characterized in that: At least four connecting grooves (34) are provided on the mounting plate (3), and the connecting grooves (34) correspond to the second sliding blocks (53) one by one. The mounting assembly (4) comprises a first magnetic block (41), a second magnetic block (42) and a third magnetic block (43). At least four first magnetic blocks (41) are provided, and the first magnetic blocks (41) correspond to the second sliding blocks (53) one by one. The first magnetic block (41) is slidably arranged in the connecting groove (34). The second sliding block (53) is made of magnetic material, and there is a mutual attraction between the second sliding block (53) and the first magnetic block (41). The second magnetic block (42) is fixedly arranged on the top plate (24); the third magnetic block (43) is fixedly connected to the connecting rod (33), and there is a mutual attraction between the third magnetic block (43) and the second magnetic block (42).

6. A positioning device for urban planning topographic survey according to claim 4, characterized in that: The hinged ball shell (31) is provided with a threaded hole; the locking assembly (6) comprises a fixing bolt (61) and a knob (62); the fixing bolt (61) is inserted into the threaded hole and is threadedly connected to the threaded hole; the knob (62) is fixedly connected to the fixing bolt (61).

7. A positioning device for urban planning topographic survey according to claim 1, characterized in that: The metering telescopic rod (22) is provided with a fixing component (7), and the fixing component (7) comprises a fixing telescopic rod (71) and a fixing spring (72); the fixing end of the fixing telescopic rod (71) is fixedly connected to the movable end of the metering telescopic rod (22); the movable end of the fixing telescopic rod (71) divides the interior of the fixing end of the fixing telescopic rod (71) into a rod cavity (711) and a rodless cavity (712); the fixing spring (72) is fixedly arranged in the rodless cavity (712), and the fixing spring (72) is always in a compressed state; the metering telescopic rod (22) is provided with an adjusting component (8), and the adjusting component (8) is used to adjust the telescopic state of the fixing telescopic rod (71).

8. A positioning device for urban planning topographic survey according to claim 7, characterized in that: The regulating assembly (8) comprises an airbag (81) and a connecting tube (82); the airbag (81) is fixedly arranged at the bottom of the metering telescopic rod (22), and the airbag (81) is made of elastic material; two ends of the connecting tube (82) are respectively connected to the airbag (81) and the rod cavity (711).

Images