A positioning device for urban planning terrain survey

Abstract

The present application relates to a positioning device for urban planning topographic survey, belonging to the technical field of topographic survey equipment. It includes an installation body, an installation plate, an installation component, a leveling component and a locking component; a support telescopic rod and a measuring 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 measuring 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. The present application can facilitate the topographic survey of cities.

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. 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 solutions:

[0007] 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 measuring 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 measuring 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.

[0008] By adopting the above technical solution, when surveying the urban terrain in a complex environment, after the operator arrives at the position to be surveyed, the mounting body is fixedly installed on the road surface by using the supporting telescopic rod and the measuring telescopic rod. Then, the surveying instrument and the mounting plate are installed on the mounting body by using the mounting component. Then, the lengths of the supporting 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 component 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 component, so that when the operator operates the surveying instrument for surveying, the surveying instrument can maintain a horizontal state.

[0009] Optionally, the mounting body is of a cavity structure, and a suspension liquid is preset in the mounting body; the leveling component includes a floating plate, a first slider, a second slider and a support rod; the floating plate is located inside the mounting body; at least four first sliders are provided, and are evenly arranged circumferentially along the rotation axis of the surveying instrument. The first sliders are located on the top of the floating plate and are slidably connected to the floating plate; at least four second sliders are provided and are in one-to-one correspondence with the first sliders. The second sliders are connected to the mounting plate, and the second sliders can slide relative to the mounting plate; at least four support rods are provided and are in one-to-one correspondence with the first sliders. The support rods are arranged on the mounting body, and both ends of the support rods are ball-jointed to the first sliders and the second sliders respectively.

[0010] 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 and then releases the surveying instrument, 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 rods slide relative to the mounting body, and the sliding axis is parallel to the axis of the mounting body, and the angles between the support rods 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.

[0011] Optionally, the mounting 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 mounting body into an upper cavity and a lower cavity, and the suspension liquid fills the lower cavity; the support rods are arranged on the top plate and are slidably connected to the top plate.

[0012] By adopting the above technical solution, the floating of the floating plate in the incomplete spherical shell divides the installation body 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. 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.

[0013] 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.

[0014] 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. As a result, the surveying instrument will not move relative to the installation body in the horizontal direction, ensuring that the surveying instrument is in a fixed state when the operator operates the surveying instrument to survey the urban terrain, thus facilitating the terrain survey of the city.

[0015] Adopting 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.

[0016] Optionally, at least four connecting grooves are formed in the mounting plate, and the connecting grooves correspond to the second sliders one by one; the mounting 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 a magnetic material, 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.

[0017] 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 between the first magnet and the second slider and the mutual attraction between 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.

[0018] Optionally, a threaded hole is formed in 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.

[0019] 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.

[0020] Optionally, a fixing assembly is arranged on the measuring telescopic rod. 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 measuring 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 is always in a compressed state; an adjusting assembly is arranged on the measuring telescopic rod, and the adjusting assembly is used to adjust the telescopic state of the fixing telescopic rod.

[0021] 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 measuring telescopic rod, so that the measuring 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 measuring telescopic rod is in a telescopic state, and the distance between the surveying instrument and the ground can be adjusted. The measuring telescopic rod is fixed by using the fixing assembly, avoiding the measuring telescopic rod from telescoping when the operator operates the surveying instrument for surveying, resulting in affecting the accuracy of the survey, and thus facilitating the topographic survey of the city.

[0022] Optionally, the adjusting assembly includes an airbag and a connecting pipe; the airbag is fixedly arranged at the bottom of the measuring 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.

[0023] 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 elastic force of the airbag itself 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.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] By setting the leveling component, the surveying instrument is automatically leveled to keep the surveying instrument in a horizontal state. Then, the surveying instrument is locked by the locking component, so that when the operator operates the surveying instrument for surveying, the surveying instrument can be leveled and positioned adaptively and then locked, without the need for manual leveling and positioning every time after adjusting the height and angle of the surveying instrument, thus facilitating the topographic survey of the city.

[0026] 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 because 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, thus keeping the surveying instrument horizontal.

[0027] 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 may affect 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 then the distance between the surveying instrument and the ground can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0029] Figure 2 is a cross-sectional view of an embodiment of the present application;

[0030] Figure 3 is Figure 2 a partial enlarged view of part A in

[0031] Figure 4 is Figure 2 a partial enlarged view of part B in

[0032] Description of the reference numerals:

[0033] 1. Surveying instrument;

[0034] 2. Installation 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;

[0035] 3. Installation plate; 31. Hinged spherical shell; 32. Sphere; 33. Connecting rod; 34. Connecting groove;

[0036] 4. Installation component; 41. First magnet; 42. Second magnet; 43. Third magnet;

[0037] 5. Leveling component; 51. Floating plate; 52. First slider; 53. Second slider; 54. Support rod;

[0038] 6. Locking component; 61. Fixed bolt; 62. Knob;

[0039] 7. Fixing component; 71. Fixed telescopic rod; 711. Rod chamber; 712. Rodless chamber; 72. Fixed spring;

[0040] 8. Adjusting component; 81. Airbag; 82. Connecting pipe. Detailed implementation manners

[0041] The following further elaborates on this application in conjunction with the attached Figures 1-4 drawings for a more detailed description.

[0042] The embodiment of this 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 an installation body 2, and the installation 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 on 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 an installation body 2 with a cavity structure.

[0043] Referring to Figure 1 and Figure 2, a support telescopic rod 21 and a metering telescopic rod 22 are provided at the bottom of the installation body 2. There are three support telescopic rods 21, and they are evenly arranged along the circumferential direction of the installation 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 can only be telescoped under the action of an external force.

[0044] The metering telescopic rod 22 is coaxially arranged at the bottom of the bottom plate 25. The fixed end of the metering telescopic rod 22 is fixedly connected to the bottom wall of the bottom plate 25. A scale disk is arranged on the movable end of the metering telescopic rod 22, and the scale disk is arranged along the length direction of the metering telescopic rod 22.

[0045] Refer to Figure 2 and Figure 3 , a fixing component 7 is arranged on the metering telescopic rod 22. The fixing component 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. The two ends of the fixing spring 72 are respectively fixedly connected to the fixed end and the movable end of the fixing telescopic rod 71, and the fixing spring 72 is always in a compressed state.

[0046] Refer to Figure 2 and Figure 3 , an adjusting component 8 is arranged on the metering telescopic rod 22. The adjusting component 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 gas is preset inside the airbag 81. The connecting pipe 82 is arranged inside the movable end of the metering telescopic rod 22, and the two ends of the connecting pipe 82 are respectively communicated with the inside of the airbag 81 and the rod chamber 711.

[0047] In the initial state, the metering telescopic rod 22 is at the maximum extended length, the support telescopic rod 21 is in the contracted state, the length of the support telescopic rod 21 is less than the length of the metering telescopic rod 22, the fixing telescopic rod 71 is in the 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 as to fix the length of the metering telescopic rod 22.

[0048] When surveying complex urban terrains, after the operator reaches 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 along 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, thereby fixedly installing the installation body 2. The friction force between the fixed end and the movable end of the supporting telescopic rod 21 provides the installation body 2 with supporting forces in three directions.

[0049] 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 hingedly provided 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 hingedly connected 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.

[0050] Refer to Figure 2 and Figure 4 As shown in FIGS.

[0051] Refer to Figure 2 and Figure 4 As shown in FIGS.

[0052] 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. Then the surveying instrument 1 is locked by the locking component 6, and then the surveying can be started.

[0053] 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 suspended. 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. 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.

[0054] Referring to Figure 2 and Figure 4 , a hinge ball shell 31 is fixedly arranged at the bottom of the mounting plate 3, and the opening direction of the hinge ball shell 31 is away from the mounting plate 3. A sphere 32 is arranged inside the hinge ball 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.

[0055] 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. The eight connecting grooves 34 are evenly arranged along the circumferential direction of the axis of the mounting plate 3.

[0056] 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 attraction material, and there is a mutual attraction 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 a mutual attraction between the third magnetic block 43 and the second magnetic block 42.

[0057] Threaded holes are formed in the articulated 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 articulated 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.

[0058] When surveying complex urban terrain, 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.

[0059] 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.

[0060] After the operator finishes installing the surveying instrument 1 and waits for a certain period of time until the surveying 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 surveying instrument 1 in the current position and keeping the surveying instrument 1 horizontally fixed. And since the axis of the connecting rod 33 and the axis of the incomplete spherical shell 23 are always coaxial, the center of the mounting plate 3 is always on the axis of the mounting body 2, so that the surveying instrument 1 will not move relative to the mounting body 2 in the horizontal direction, ensuring that when the operator operates the surveying instrument 1 to survey the urban terrain, the surveying instrument 1 is in a fixed state.

[0061] Since the axis of the connecting rod 33 and the axis of the incomplete spherical shell 23 are always coaxial, and the support rods 54 are uniformly arranged circumferentially along the axis of the connecting rod 33, after the surveying instrument 1 is leveled and positioned, the distance between the surveying 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 can obtain the distance between the surveying instrument 1 and the ground at this time only according to the scale on the movable end of the metering telescopic rod 22. Combining 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 surveying instrument 1 is located, the height of the surveying instrument 1 at this time can be obtained.

[0062] The implementation principle of the positioning device for urban planning terrain survey in the embodiment of the present application is as follows:

[0063] 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 elastic force of the airbag 81 itself 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, thereby 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.

[0064] After the installation body 2 is fixedly installed 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 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, fixing and installing the surveying instrument 1 and the mounting plate 3 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 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 the appropriate position.

[0065] After the position of the surveying 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 surveying 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, locking the surveying instrument 1 in the current position and keeping the surveying instrument 1 horizontally fixed.

[0066] Since the axis of the connecting rod 33 and the axis of the incomplete spherical shell 23 are always coaxial, the center of the mounting plate 3 is always on the axis of the installation body 2, so that the surveying instrument 1 will not move relative to the installation body 2 in the horizontal direction, ensuring that the surveying instrument 1 is in a fixed state when the operator operates the surveying instrument 1 to survey the urban terrain.

[0067] After the survey is completed, the operator can rotate the direction of the surveying instrument 1 and adjust the length of the metering telescopic rod 22 to continue surveying different heights and different directions at this position.

[0068] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A positioning device for urban planning topographic survey, used for leveling and positioning a surveying instrument (1), characterized in that: It includes an installation body (2), an installation plate (3), an installation component (4), a leveling component (5) and a locking component (6); a support telescopic rod (21) and a measuring telescopic rod (22) are arranged at the bottom of the installation body (2); at least three support telescopic rods (21) are provided, and the fixed ends of the support telescopic rods (21) are hinged to the installation body (2); the fixed end of the measuring telescopic rod (22) is fixedly connected to the installation body (2); the surveying instrument (1) is rotatably arranged on the installation plate (3); the installation component (4) is arranged on the installation body (2) and is used to install the installation plate (3) on the installation body (2); the leveling component (5) is arranged on the installation body (2) and is used to adaptively keep the surveying instrument (1) in a horizontal state; the locking component (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; the installation body (2) is a cavity structure, and a suspension is preset in the installation body (2); 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 located inside the installation body (2); at least four first sliders (52) are provided and are evenly arranged circumferentially along the rotation axis of the surveying instrument (1), the first sliders (52) are located on the top of the floating plate (51) and are slidably connected to the floating plate (51); at least four second sliders (53) are provided and are in one-to-one correspondence with the first sliders (52), the second sliders (53) are connected to the installation plate (3), and the second sliders (53) can slide relative to the installation plate (3); at least four support rods (54) are provided and are in one-to-one correspondence with the first sliders (52), the support rods (54) pass through the installation body (2), and both ends of the support rods (54) are ball-hinged to the first sliders (52) and the second sliders (53) respectively; the installation body (2) includes an incomplete spherical shell (23), a top plate (24) and a bottom plate (25); both the top plate (24) and the bottom plate (25) are 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 installation body (2) into an upper cavity (26) and a lower cavity (27), and the suspension fills the lower cavity (27); the support rod (54) passes through the top plate (24) and is slidably connected to the top plate (24); a hinged spherical shell (31) is fixedly arranged on the installation plate (3); a sphere (32) is arranged inside the hinged spherical shell (31);A connecting rod (33) is fixedly arranged on the sphere (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 installation body (2); at least four connecting grooves (34) are formed in the mounting plate (3), and the connecting grooves (34) correspond to the second sliders (53) one by one; the mounting assembly (4) includes 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, the first magnetic blocks (41) correspond to the second sliders (53) one by one, and the first magnetic blocks (41) are slidably arranged in the connecting grooves (34); the second slider (53) is made of a magnetic material, and there is a mutual attraction between the second slider (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).; 2. The positioning device for urban planning topographic survey according to claim 1, characterized in that: The articulated spherical shell (31) is provided with threaded holes; the locking assembly (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 threaded hole; the knob (62) is fixedly connected to the fixing bolt (61).

3. A positioning device for urban planning topographic survey according to claim 1, characterized in that: A fixing assembly (7) is arranged on the metering telescopic rod (22), and the fixing assembly (7) includes a fixing telescopic rod (71) and a fixing spring (72); the fixed 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 inner part of the fixed end of the fixing telescopic rod (71) into a rod chamber (711) and a rodless chamber (712); the fixing spring (72) is fixedly arranged in the rodless chamber (712), and the fixing spring (72) is always in a compressed state; an adjusting assembly (8) is arranged on the metering telescopic rod (22), and the adjusting assembly (8) is used for adjusting the telescopic state of the fixing telescopic rod (71).

4. A positioning device for urban planning topographic survey according to claim 3, characterized in that: The adjusting assembly (8) includes an airbag (81) and a connecting pipe (82); the airbag (81) is fixedly arranged at the bottom of the metering telescopic rod (22), and the airbag (81) is made of an elastic material; both ends of the connecting pipe (82) are communicated with the airbag (81) and the rod chamber (711) respectively.

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