A surveying apparatus positioning device for engineering surveying

Abstract

The application discloses a surveying and mapping instrument positioning device for engineering surveying and mapping, and relates to the field of engineering surveying and mapping.The surveying and mapping instrument positioning device comprises a surveying and mapping instrument main body, a surveying and mapping adjusting mechanism is fixedly connected to the upper side of the surveying and mapping instrument main body, a telescopic tripod mechanism is fixedly connected to the lower side of the surveying and mapping adjusting mechanism, and an expanded support mechanism is rotatably connected to the lower side of the telescopic tripod mechanism.The expanded support mechanism is used for expanding the support range when the device encounters a sludge ground, the third gears are rotated to drive the lower floating support assembly to make a fan-shaped movement, the air cushion ring moves downwards, the inside of the air cushion ring is filled with gas, the air cushion ring is supported on the sludge surface, the support area is increased, the stress is more stable, compared with a traditional tripod with a sharp tip at the bottom, the gravity component of the expanded support mechanism remains unchanged, the contact area with the sludge is increased, the floating support assembly is expanded fan-shapedly outward, the gravity center of the overall expanded support mechanism is lowered, and the stability of standing on the sludge is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering surveying and mapping, in particular to a surveying and mapping instrument positioning device for engineering surveying and mapping. BACKGROUND

[0002] Surveying and mapping instruments are simply data collection, processing, output, etc. instruments and devices designed and manufactured for surveying and mapping operations. In engineering construction, various instruments for orientation, distance measurement, angle measurement, height measurement, mapping, and photogrammetry are needed for measurement work in planning and design, construction, and management stages. Among them, the types of instruments used in engineering surveying and mapping are more, and most of the surveying and mapping instruments are placed on a tripod for surveying and mapping when working.

[0003] For example, Chinese patent CN116123413A discloses a surveying and mapping instrument positioning device for engineering surveying and mapping, which includes a tripod, the upper end of the tripod is provided with a mounting seat, the lower end of the tripod is provided with a ground grabbing mechanism. An adjusting ball is rotatably arranged in the mounting seat. The lower end of the adjusting ball is provided with a plumb bob through a connecting rope, and the uppermost end of the adjusting ball is provided with a fixing mechanism.

[0004] However, in the prior art, surveying and mapping work is carried out in the early stage of engineering construction, and the construction environment required for surveying and mapping varies greatly. Some construction environments are convenient for erecting a tripod and directly surveying, while some construction environments are relatively harsh, with soft soil and water pits and sludge everywhere. The bottom tip of the ordinary tripod is directly inserted into the soft soil or sludge when erecting, and in this case, the tripod is not only inconvenient to adjust, but also cannot guarantee that the tripod is stably supported in the soft soil or sludge, affecting the measurement accuracy of the surveying and mapping instrument. SUMMARY

[0005] The purpose of the present application is to provide a surveying and mapping instrument positioning device for engineering surveying and mapping, to solve the problem that surveying and mapping work is carried out in the early stage of engineering construction, and the construction environment required for surveying and mapping varies greatly. Some construction environments are convenient for erecting a tripod and directly surveying, while some construction environments are relatively harsh, with soft soil and water pits and sludge everywhere. The bottom tip of the ordinary tripod is directly inserted into the soft soil or sludge when erecting, and in this case, the tripod is not only inconvenient to adjust, but also cannot guarantee that the tripod is stably supported in the soft soil or sludge, affecting the measurement accuracy of the surveying and mapping instrument.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a surveying and mapping instrument positioning device for engineering surveying and mapping, comprising a surveying and mapping instrument main body, the upper side of the surveying and mapping instrument main body is fixedly connected with a surveying and mapping adjusting mechanism, the lower side of the surveying and mapping adjusting mechanism is fixedly connected with a telescopic tripod mechanism, and the lower side of the telescopic tripod mechanism is rotatably connected with an expanded support mechanism.

[0007] The expansion support mechanism comprises a chain, one end of the chain is movably connected with a first sprocket, the middle part of the first sprocket is fixedly connected with a half-tooth screw rod, the outer surface of the lower part of the half-tooth screw rod is fixedly installed with a first gear, the outer side of the first gear is meshingly connected with a second gear, the outer side of the second gear is meshingly connected with an inner-outer double-tooth ring, the inner side of the inner-outer double-tooth ring is meshingly connected with a plurality of third gears.

[0008] The other end of the chain is movably connected with a second sprocket, the middle part of the second sprocket is fixedly installed with a threaded rod, the outer surface of the threaded rod is threadedly connected with a threaded sleeve, the outer side of the threaded sleeve is fixedly connected with an air cushion ring, the shaft part of each third gear is fixedly connected with a floating support assembly, the floating support assembly comprises a fan plate, the inner part of the fan plate is fixedly connected with the shaft part of the third gear, the lower side of the fan plate is fixedly connected with a fan-shaped air cushion plate, the lower side of the fan-shaped air cushion plate is fixedly connected with a rubber bottom plate, the inner part of the rubber bottom plate is fixedly connected with a plurality of anti-abrasion balls.

[0009] Preferably, the inner-outer double-tooth ring is located on the upper side of the plurality of fan plates, the upper side of the inner-outer double-tooth ring is lapped with a support ring block, the lower side of the inner part of the support ring block is rotatably connected with the shaft part of the third gear, the upper side of the support ring block is fixedly connected with an upper cover, the middle part of the upper cover is rotatably connected with the outer surface of the upper part of the fan plate.

[0010] Preferably, the second sprocket is located above the upper cover, the first sprocket is located above the support ring block, the first gear is located below the support ring block, the shaft part of the second gear is rotatably connected with the inner part of the lower side of the support ring block, one end of the inner part of the support ring block is rotatably connected with the outer surface of the half-tooth screw rod, the upper side of the half-tooth screw rod is fixedly connected with a rotating handle, and the air cushion ring is located in the inner cavity of the support ring block.

[0011] Preferably, the upper side of the upper cover is fixedly connected with a spherical shell, the inner part of the spherical shell is rotatably connected with a spherical connecting column, and the upper side of the spherical connecting column is fixedly connected with a support rod.

[0012] Preferably, the outer surface of the support rod is slidably clamped with a second support frame and a first support frame, and the outer side of the second support frame is slidably clamped with the inner side of the first support frame.

[0013] Preferably, the lower end of the second support frame is fixedly connected with a second fastener, and the upper end of the second support frame is fixedly connected with a first fastener.

[0014] Preferably, the lower end of the first support frame is rotatably connected with an inner support rod, the other end of the inner support rod is rotatably connected with a connecting ring, and the upper end of the first support frame is rotatably connected with an inner recessed connecting seat.

[0015] Preferably, the inner recess connector is internally fixedly installed with an outer convex base, the upper side of the outer convex base is rotationally connected with a first rotating assembly, the driven pulley shaft part of the first rotating assembly is fixedly connected with a main frame body, and the first rotating assembly is fixedly installed in the interior of the main frame body.

[0016] Preferably, the upper end of the main frame body is rotationally connected with an inner groove ring, the shaft part of the inner groove ring is fixedly installed with a second rotating assembly, the second rotating assembly is fixedly installed on the outer side of the main frame body, the interior of the inner groove ring is rotationally connected with an inner rotating ring, the outer side of the inner rotating ring is movably clamped with a belt, and the other end of the inner side of the belt is movably clamped with a driving pulley.

[0017] Preferably, the middle part of the driving pulley is fixedly installed with a motor, the outer side of the motor is fixedly connected with the outer side of the inner groove ring, the outer side of the inner rotating ring is rotationally connected with the inner side of the inner groove ring, the inner wall of the inner rotating ring is fixedly connected with a fixing frame, and the lower side of the fixing frame is fixedly connected with the upper side of the surveying instrument main body.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. In the application, by setting the enlarged support mechanism and the floating support assembly, when encountering silt ground, rotate the handle, the handle drives the half tooth screw rod to rotate inside the support ring block, at this time the half tooth screw rod drives the first sprocket and the first gear to rotate, wherein the first gear engages the second gear to rotate below the support ring block, the second gear engages the part of the tooth of the inner and outer double tooth ring to rotate a certain angle, the inner and outer double tooth ring rotates a certain angle outside the several third gears and the upper side of the several floating support assemblies, wherein the several floating support assemblies support the inner and outer double tooth ring and ensure the stable rotation of the inner and outer double tooth ring, after the rotation of the inner and outer double tooth ring, the engagement of the internal several third gears rotates below the support ring block, the shaft of each third gear drives the floating support assembly below to make a fan-shaped motion, each floating support assembly expands outward in a fan-shaped manner, expands the support range, and wherein the first sprocket drives the chain to rotate, the chain drives the second sprocket to rotate, thereby driving the threaded rod to rotate in the middle of the upper cover, the threaded rod is screwed in the threaded sleeve, the meshing force generated by the rotation makes the threaded sleeve rotate downward, the threaded sleeve drives the air cushion ring to move downward, after the fan-shaped expansion of the several floating support assemblies, the air cushion ring extends downward from the inner cavity of the support ring block, blocks the expanded cavity, and avoids excessive silt from entering, while the air cushion ring is filled with gas and supports on the silt surface, increasing the support area and making the force more stable, compared with the traditional three-legged tripod with a sharp tip, the gravity component of the enlarged support mechanism remains unchanged, and the contact area with the silt increases, the enlarged support mechanism will not easily sink into the silt, at the same time, the silt is a mixture of water and solid silt, the density is naturally larger than that of water, the material density of the fan-shaped air cushion plate and the rubber bottom plate is smaller than that of water, so that the floating support assembly receives a larger buoyancy, further avoiding the sinking of the enlarged support mechanism into the silt, and the third gear applies a torsional force to the fan plate to expand outward in a fan-shaped manner, the center of gravity of the overall enlarged support mechanism is lowered, improving the stability of standing on the silt, wherein the several anti-abrasion balls reduce the probability of the rubber bottom plate directly contacting hard objects, reduce the abrasion of the rubber bottom plate, and prolong the service life of the floating support assembly.

[0020] 2. In the application, by setting the telescopic tripod mechanism, first, slide and lengthen the first support frame, the second support frame and the support rod, when the length of the three reaches the expected height, tighten the first fastener and the second fastener respectively, the first fastener fixes the positions of the first support frame and the second support frame, and the second fastener fixes the positions of the second support frame and the support rod, three groups are operated in the same way to determine the height of the main surveying instrument, then, spread apart the three groups of first support frames, pull the corresponding inner support rods of each first support frame, after the three groups of inner support rods rotate around the connecting ring, they are in a horizontal spread state, fix the turning angle of the three groups of first support frames, form a tripod body, and the spherical connecting column rotates in the spherical shell to make the enlarged support mechanism horizontally support on the ground.

[0021] 3、The present application, by setting up surveying and mapping adjusting mechanism, the lower end rod of the outer convex base is inserted into the inner concave connecting seat, the outer convex base and the inner concave connecting seat are fixed by nut, the assembly is completed, the motor is started, the motor drives the driving pulley, the driving pulley drives the belt to rotate, the belt drives the inner rotating ring to rotate in the inner groove ring, the surveying and mapping instrument main body is installed in the inner rotating ring, the inner rotating ring drives the surveying and mapping instrument main body to rotate horizontally, and the first rotating assembly and the second rotating assembly are adjusted to horizontal state, the first rotating assembly drives the main frame body to rotate, and then the deflection angle of the surveying and mapping instrument main body is adjusted, in the fixed point multi-angle surveying and mapping, the tripod part does not need to be frequently moved, the surveying and mapping is convenient, the second rotating assembly drives the inner groove ring to overturn, and then the elevation angle of the surveying and mapping instrument main body is adjusted, and high-low difference type surveying and mapping is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a three-dimensional structure schematic view of the surveying and mapping instrument positioning equipment for engineering surveying and mapping of the present application;

[0023] Figure 2 It is a three-dimensional structure schematic view of the surveying and mapping instrument positioning equipment for engineering surveying and mapping of the present application;

[0024] Figure 3 It is a three-dimensional structure schematic view of the telescopic tripod mechanism in the surveying and mapping instrument positioning equipment for engineering surveying and mapping of the present application;

[0025] Figure 4 It is a three-dimensional structure schematic view of the telescopic tripod mechanism and the expanded support mechanism connection relationship in the surveying and mapping instrument positioning equipment for engineering surveying and mapping of the present application;

[0026] Figure 5 It is a three-dimensional structure schematic view of the expanded support mechanism in the surveying and mapping instrument positioning equipment for engineering surveying and mapping of the present application;

[0027] Figure 6 It is a three-dimensional structure schematic view of the expanded support mechanism in the surveying and mapping instrument positioning equipment for engineering surveying and mapping of the present application;

[0028] Figure 7 It is a three-dimensional structure schematic view of the expanded support mechanism in the surveying and mapping instrument positioning equipment for engineering surveying and mapping of the present application;

[0029] Figure 8 It is a three-dimensional structure schematic view of the telescopic tripod mechanism in the surveying and mapping instrument positioning equipment for engineering surveying and mapping of the present application;

[0030] Figure 9 It is a three-dimensional structure schematic view of the telescopic tripod mechanism in the surveying and mapping instrument positioning equipment for engineering surveying and mapping of the present application;

[0031] Figure 10 Figure is a schematic diagram of the stereoscopic structure of the second perspective of the surveying and mapping adjustment mechanism in the positioning device of the surveying and mapping instrument for engineering mapping.

[0032] In the figure: 1, surveying and mapping instrument main body; 2, surveying and mapping adjustment mechanism; 21, inner rotating ring; 22, fixed frame; 23, belt; 24, driving pulley; 25, motor; 26, inner groove ring; 27, main frame body; 28, first rotating assembly; 29, outer convex base; 210, second rotating assembly; 3, telescopic tripod mechanism; 31, inner concave connecting seat; 32, first support frame; 33, second support frame; 34, first fastener; 35, inner support rod; 36, support rod; 37, second fastener; 38, connecting ring; 39, spherical connecting column; 310, spherical shell; 4, expanded support mechanism; 41, steering handle; 42, half toothed screw; 43, first sprocket; 44, chain; 45, support ring block; 46, first gear; 47, second gear; 48, inner and outer double-toothed ring; 49, second sprocket; 410, threaded sleeve; 411, air cushion ring; 412, upper cover; 413, third gear; 414, floating support assembly; 415, fan plate; 416, fan-shaped air cushion plate; 417, rubber bottom plate; 418, anti-wear ball; 419, threaded rod. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] Embodiment one

[0035] Reference Figures 1-8The utility model discloses a surveying and mapping instrument positioning device for engineering surveying and mapping, including surveying and mapping instrument body 1, the upper side fixed connection of surveying and mapping instrument body 1 has surveying and mapping adjusting mechanism 2, the lower side fixed connection of surveying and mapping adjusting mechanism 2 has telescopic tripod mechanism 3, the lower side swing joint of telescopic tripod mechanism 3 has expansion support mechanism 4, expansion support mechanism 4 includes chain 44, the inner side swing joint of one end of chain 44 has first sprocket 43, the middle part fixed connection of first sprocket 43 has half tooth screw rod 42, the outer surface lower part fixed mounting of half tooth screw rod 42 has first gear 46, the outer side meshing connection of first gear 46 has second gear 47, the outer side meshing connection of second gear 47 has inside and outside double tooth ring 48, the inner side meshing connection of inside and outside double tooth ring 48 has several third gear 413, the inner side swing joint of another end of chain 44 has second sprocket 49, the middle part fixed mounting of second sprocket 49 has threaded rod 419, the outer surface screw thread connection of threaded rod 419 has threaded sleeve 410, the outer side fixed connection of threaded sleeve 410 has air cushion ring 411, the axle portion fixed connection of every third gear 413 has buoyancy assembly 414, buoyancy assembly 414 includes fan plate 415, the inside fixed connection of fan plate 415 with third gear 413's axle portion, the lower side fixed connection of fan plate 415 has fan air cushion plate 416, the lower side fixed connection of fan air cushion plate 416 has rubber bottom plate 417, the inside fixed connection of rubber bottom plate 417 has several anti-abrasion ball 418;

[0036] Inside and outside double tooth ring 48 is located in the upper side of several fan plates 415, and the upper side of inside and outside double tooth ring 48 is overlapped with support ring block 45, and the lower side inside of support ring block 45 is swing joint with the axle portion of third gear 413, and the upper side fixed connection of support ring block 45 has upper cover 412, and the middle part of upper cover 412 is swing joint with the outer surface upper portion of fan plate 415, and second sprocket 49 is located in the upper of upper cover 412, and first sprocket 43 is located in the upper of support ring block 45, and first gear 46 is located in the lower of support ring block 45, and the axle portion of second gear 47 is swing joint with the lower side inside of support ring block 45, and the inner side of one end of support ring block 45 is swing joint with the outer surface of half tooth screw rod 42, and the upper side fixed connection of half tooth screw rod 42 has steering handle 41, and air cushion ring 411 is located in the inner chamber of support ring block 45.

[0037] In this embodiment, by setting the enlarged support mechanism 4 and the floating support assembly 414, when encountering a muddy ground, rotate the handle 41, the handle 41 drives the half toothed screw rod 42 to rotate inside the support ring block 45, at this time the half toothed screw rod 42 simultaneously drives the first sprocket 43 and the first gear 46 to rotate, wherein the first gear 46 engages the second gear 47 to rotate below the support ring block 45, the second gear 47 engages the partial teeth on the outside of the inner and outer double-toothed ring 48 to rotate by a certain angle, the inner and outer double-toothed ring 48 rotates by a certain angle outside the several third gears 413 and on the upper side of the several floating support assemblies 414, wherein the several floating support assemblies 414 support the inner and outer double-toothed ring 48 and ensure the stable rotation of the inner and outer double-toothed ring 48, after the rotation of the inner and outer double-toothed ring 48, engage the inside several third gears 413 to rotate on the lower side of the support ring block 45, the shaft of each third gear 413 drives the floating support assembly 414 below to make a sector motion, each floating support assembly 414 similarly makes a sector expansion motion outward, expanding the support range;

[0038] And wherein the first sprocket 43 drives the chain 44 to rotate, the chain 44 drives the second sprocket 49 to rotate, thereby driving the threaded rod 419 to rotate in the middle of the upper cover 412, the threaded rod 419 simultaneously threadedly rotates inside the threaded sleeve 410, the meshing force generated by the rotation makes the threaded sleeve 410 rotate and move downward, the threaded sleeve 410 drives the air cushion ring 411 to move downward, after the sector expansion of the several floating support assemblies 414, the air cushion ring 411 extends downward from the inner cavity of the support ring block 45, blocking the expanded cavity, avoiding too much mud from entering, while the air cushion ring 411 is filled with gas inside, supporting on the surface of the mud, increasing the support area, and supporting more stably;

[0039] Compared with the traditional tripod with a sharp tip at the bottom, the force component of the enlarged support mechanism 4 remains unchanged, while the contact area with the mud increases, the enlarged support mechanism 4 will not easily sink into the mud, at the same time, the mud is a mixture of water and solid sediment, the density is naturally larger than that of water, the material density of the sector air cushion plate 416 and the rubber bottom plate 417 is smaller than that of water, so that the floating support assembly 414 receives a larger buoyancy, further avoiding the sinking of the enlarged support mechanism 4 into the mud, and the third gear 413 exerts a torsional force on the sector plate 415, making it expand outward in a sector shape, the center of gravity of the overall enlarged support mechanism 4 drops, improving the stability of standing on the mud, wherein the several anti-abrasion balls 418 reduce the probability of the rubber bottom plate 417 directly contacting hard objects, reducing the abrasion of the rubber bottom plate 417, prolonging the service life of the floating support assembly 414.

[0040] Embodiment two

[0041] According to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, the upper side of the upper cover 412 is fixedly connected with a spherical shell 310, the inside of the spherical shell 310 is rotatably connected with a spherical connecting column 39, the upper side of the spherical connecting column 39 is fixedly connected with a support rod 36, the outer surface of the support rod 36 is slidably connected with a second support frame 33 and a first support frame 32, the outer side of the second support frame 33 is slidably connected with the inner side of the first support frame 32, the lower end of the second support frame 33 is fixedly connected with a second fastener 37, the upper end of the second support frame 33 is fixedly connected with a first fastener 34, the lower end of the first support frame 32 is rotatably connected with an inner support rod 35, the other end of the inner support rod 35 is rotatably connected with a connecting ring 38, and the upper end of the first support frame 32 is rotatably connected with an inner recessed connecting seat 31.

[0042] In the embodiment, by setting the telescopic tripod mechanism 3, first, the first support frame 32, the second support frame 33 and the support rod 36 are slidably lengthened, when the lengths of the three reach the expected height, the first fastener 34 and the second fastener 37 are respectively tightened, the first fastener 34 fixes the positions of the first support frame 32 and the second support frame 33, and the second fastener 37 fixes the positions of the second support frame 33 and the support rod 36, three groups are operated in the same way, the height of the surveying instrument main body 1 is determined, then the three groups of first support frames 32 are pried open, each first support frame 32 pulls the corresponding inner support rod 35, after the three groups of inner support rods 35 rotate around the connecting ring 38, they are in a horizontal support open state, the three groups of first support frames 32 are fixed in a turned-over angle, forming a tripod body, the spherical connecting column 39 rotates in the spherical shell 310, so that the enlarged support mechanism 4 is horizontally supported on the ground.

[0043] Embodiment three

[0044] According to Figure 1 , Figure 2 , Figure 3 , Figure 9 and Figure 10 , the inside of the inner recessed connecting seat 31 is fixedly installed with an outer convex base 29, the upper side of the outer convex base 29 is rotatably connected with a first rotating assembly 28, the driven belt wheel shaft part of the first rotating assembly 28 is fixedly connected with a main frame body 27, the first rotating assembly 28 is fixedly installed in the inside of the main frame body 27, the upper end of the main frame body 27 is rotatably connected with an inner groove ring 26, the shaft part of one end of the inner groove ring 26 is fixedly installed with a second rotating assembly 210, the second rotating assembly 210 is fixedly installed on the outside of the main frame body 27, the inside of the inner groove ring 26 is rotatably connected with an inner rotating ring 21, the outer side of the inner rotating ring 21 is movably connected with a belt 23, the other end of the inner side of the belt 23 is movably connected with a driving belt wheel 24, the middle part of the driving belt wheel 24 is fixedly installed with a motor 25, the outer side of the motor 25 is fixedly connected with the outer side of the inner groove ring 26, the outer side of the inner rotating ring 21 is rotatably connected with the inner side of the inner groove ring 26, the inner wall of the inner rotating ring 21 is fixedly connected with a fixing frame 22, and the lower side of the fixing frame 22 is fixedly connected with the upper side of the surveying instrument main body 1.

[0045] In this embodiment, by setting the mapping adjustment mechanism 2, the lower end rod part of the outer convex base 29 is inserted into the inner concave connecting seat 31, and the outer convex base 29 and the inner concave connecting seat 31 are fixed in position with nuts, the assembly is completed, the motor 25 is started, the motor 25 drives the driving pulley 24, the driving pulley 24 drives the belt 23 to rotate, the belt 23 drives the inner rotating ring 21 to rotate in the inner groove ring 26 by friction, the mapping instrument main body 1 is installed inside the inner rotating ring 21 through the fixing frame 22, the inner rotating ring 21 drives the mapping instrument main body 1 to rotate horizontally after rotating, and is adjusted to a horizontal state, the first rotating assembly 28 and the second rotating assembly 210 operate in the same way, the first rotating assembly 28 drives the main frame body 27 to rotate, and then adjusts the deflection angle of the mapping instrument main body 1, and in point multi-angle mapping, the tripod part does not need to be frequently moved, which is convenient for mapping, and the second rotating assembly 210 drives the inner groove ring 26 to overturn, and then adjusts the elevation angle of the mapping instrument main body 1, which is convenient for high-low difference mapping.

[0046] The use method and working principle of the device are as follows: when the mapping instrument positioning device for engineering mapping is used, first, the first support frame 32, the second support frame 33 and the support rod 36 are slid and lengthened relative to each other, when the lengths of the three reach the expected height, the first fastener 34 and the second fastener 37 are respectively tightened, the first fastener 34 fixes the positions of the first support frame 32 and the second support frame 33, and the second fastener 37 fixes the positions of the second support frame 33 and the support rod 36, and the same operation is performed on the three groups to determine the mapping height of the mapping instrument main body 1.

[0047] Then, the three groups of first support frames 32 are pried apart, each first support frame 32 pulls the corresponding inner support rod 35, and after the three groups of inner support rods 35 rotate around the connecting ring 38, they are in a horizontal support state, the three groups of first support frames 32 are fixed in a turned angle to form a tripod body, and the spherical connecting column 39 rotates in the spherical shell 310 to make the enlarged support mechanism 4 horizontally support on the ground.

[0048] When encountering muddy ground, turn the handle 41, the handle 41 drives the half tooth screw rod 42 to rotate inside the support ring block 45, at this time the half tooth screw rod 42 drives the first sprocket 43 and the first gear 46 to rotate, wherein the first gear 46 meshes with the second gear 47 to rotate below the support ring block 45, the second gear 47 meshes with the part of the tooth of the inner and outer double tooth ring 48 to rotate a certain angle, the inner and outer double tooth ring 48 rotates a certain angle outside the third gear 413 and on the upper side of the plurality of floating support assemblies 414, wherein the plurality of floating support assemblies 414 support the inner and outer double tooth ring 48 and ensure the stable rotation of the inner and outer double tooth ring 48, after the rotation of the inner and outer double tooth ring 48, the inner plurality of third gears 413 are meshed to rotate below the support ring block 45, the shaft of each third gear 413 drives the floating support assembly 414 below to make a sector motion, each floating support assembly 414 expands outward in a sector shape, thereby expanding the support range, and wherein the first sprocket 43 drives the chain 44 to rotate, the chain 44 drives the second sprocket 49 to rotate, thereby driving the threaded rod 419 to rotate in the middle of the upper cover 412, the threaded rod 419 is simultaneously screwed in the threaded sleeve 410, the meshing force generated by the rotation makes the threaded sleeve 410 rotate and move downward, the threaded sleeve 410 drives the air cushion ring 411 to move downward, after the plurality of floating support assemblies 414 expand in a sector shape, the air cushion ring 411 extends downward from the inner cavity of the support ring block 45, blocking the expanded cavity, thereby preventing too much mud from entering, and the air cushion ring 411 is filled with gas inside, supporting on the surface of the mud, increasing the support area and making the force more stable, compared with the traditional tripod with a sharp tip, the contact area of the expanded support mechanism 4 with the mud increases while the force component of the expanded support mechanism 4 remains unchanged, and the expanded support mechanism 4 will not easily sink into the mud;

[0049] At the same time, the mud is a mixture of water and solid sediment, and the density is naturally larger than that of water, the material density of the sector-shaped air cushion plate 416 and the rubber bottom plate 417 is smaller than that of water, so that the floating support assembly 414 receives a larger buoyancy, further preventing the expanded support mechanism 4 from sinking into the mud, and the third gear 413 applies a torsional force to the sector plate 415, causing it to expand outward in a sector shape, thereby lowering the center of gravity of the entire expanded support mechanism 4 and improving the stability of standing on the mud, wherein the plurality of anti-abrasion balls 418 reduces the probability of the rubber bottom plate 417 directly contacting hard objects, reduces the abrasion of the rubber bottom plate 417, and prolongs the service life of the floating support assembly 414;

[0050] Next, the lower end rod part of the outer convex base 29 is inserted into the inner concave connecting base 31, and the outer convex base 29 and the inner concave connecting base 31 are fixed in position by a nut, the assembly is completed, the motor 25 is started, the motor 25 drives the driving pulley 24, the driving pulley 24 drives the belt 23 to rotate, the belt 23 drives the inner rotating ring 21 to rotate in the inner groove ring 26 by friction, the surveying instrument main body 1 is installed inside the inner rotating ring 21 through the fixing frame 22, the inner rotating ring 21 drives the surveying instrument main body 1 to rotate horizontally after rotating, and is adjusted to be in a horizontal state, the first rotating assembly 28 and the second rotating assembly 210 operate in the same way, the first rotating assembly 28 drives the main frame body 27 to rotate, and then adjusts the deflection angle of the surveying instrument main body 1, in the fixed-point multi-angle surveying, the tripod part does not need to be frequently moved, and the surveying is facilitated, the second rotating assembly 210 drives the inner groove ring 26 to overturn, and then adjusts the elevation angle of the surveying instrument main body 1, and high-low difference type surveying is facilitated.

[0051] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A surveying apparatus positioning device for use in engineering surveying, comprising a surveying apparatus body (1), characterised in that: The upper side of the surveying instrument body (1) is fixedly connected with a surveying adjusting mechanism (2), the lower side of the surveying adjusting mechanism (2) is fixedly connected with a telescopic tripod mechanism (3), and the lower side of the telescopic tripod mechanism (3) is rotationally connected with an expanding support mechanism (4). The expanding support mechanism (4) comprises a chain (44), one end of the chain (44) is movably connected with a first sprocket (43), the middle part of the first sprocket (43) is fixedly connected with a half toothed screw (42), the outer surface of the half toothed screw (42) is fixedly connected with a first gear (46), the outer side of the first gear (46) is meshingly connected with a second gear (47), the outer side of the second gear (47) is meshingly connected with an inner-outer double-toothed ring (48), and the inner side of the inner-outer double-toothed ring (48) is meshingly connected with a plurality of third gears (413). The other end of the chain (44) is movably connected with a second sprocket (49), the middle part of the second sprocket (49) is fixedly connected with a threaded rod (419), the outer surface of the threaded rod (419) is threadedly connected with a threaded sleeve (410), the outer side of the threaded sleeve (410) is fixedly connected with an air cushion ring (411), the shaft part of each third gear (413) is fixedly connected with a floating support assembly (414), the floating support assembly (414) comprises a fan plate (415), the inner part of the fan plate (415) is fixedly connected with the shaft part of the third gear (413), the lower side of the fan plate (415) is fixedly connected with a fan-shaped air cushion plate (416), the lower side of the fan-shaped air cushion plate (416) is fixedly connected with a rubber bottom plate (417), and the inner part of the rubber bottom plate (417) is fixedly connected with a plurality of anti-abrasion balls (418). The inner-outer double-toothed ring (48) is located on the upper side of the plurality of fan plates (415), the upper side of the inner-outer double-toothed ring (48) is lapped with a support ring block (45), the lower side of the support ring block (45) is rotationally connected with the shaft part of the third gear (413), the upper side of the support ring block (45) is fixedly connected with an upper cover (412), and the middle part of the upper cover (412) is rotationally connected with the outer surface of the upper part of the fan plate (415). The second sprocket (49) is located above the upper cover (412), the first sprocket (43) is located above the support ring block (45), the first gear (46) is located below the support ring block (45), the shaft part of the second gear (47) is rotationally connected with the inner part of the lower side of the support ring block (45), one end of the inner part of the support ring block (45) is rotationally connected with the outer surface of the half toothed screw (42), the upper side of the half toothed screw (42) is fixedly connected with a rotating handle (41), and the air cushion ring (411) is located in the inner cavity of the support ring block (45).

2. A surveying apparatus positioning device for engineering surveying according to claim 1, characterized in that: The upper side of the upper cover (412) is fixedly connected with a spherical shell (310), the inner part of the spherical shell (310) is rotationally connected with a spherical connecting column (39), and the upper side of the spherical connecting column (39) is fixedly connected with a support rod (36).

3. A surveying apparatus positioning device for use in engineering surveying according to claim 2, characterised in that: The outer surface of the support rod (36) is slidingly clamped with a second support frame (33) and a first support frame (32), and the outer side of the second support frame (33) is slidingly clamped with the inner side of the first support frame (32).

4. A surveying apparatus positioning device for use in engineering surveying according to claim 3, characterised in that: The lower end of the second support frame (33) is fixedly connected with a second fastener (37), and the upper end of the second support frame (33) is fixedly connected with a first fastener (34).

5. A surveying apparatus positioning device for use in engineering surveying according to claim 4, characterised in that: The lower end of the first support frame (32) is rotatably connected with an inner support rod (35), the other end of the inner support rod (35) is rotatably connected with a connecting ring (38), and the upper end of the first support frame (32) is rotatably connected with an inner recessed connecting seat (31).

6. A surveying apparatus positioning device for use in engineering surveying according to claim 5, characterised in that: The inner recessed connecting seat (31) is fixedly installed with an outer convex base (29), the upper side of the outer convex base (29) is rotatably connected with a first rotating assembly (28), the driven pulley shaft part of the first rotating assembly (28) is fixedly connected with a main frame body (27), and the first rotating assembly (28) is fixedly installed in the inner side of the main frame body (27).

7. A surveying apparatus positioning device for use in engineering surveying according to claim 6, characterised in that: The upper end of the main frame body (27) is rotatably connected with an inner groove ring (26), one end of the shaft part of the inner groove ring (26) is fixedly installed with a second rotating assembly (210), the second rotating assembly (210) is fixedly installed on the outer side of the main frame body (27), the inner side of the inner groove ring (26) is rotatably connected with an inner rotating ring (21), the outer side of the inner rotating ring (21) is movably clamped with a belt (23), and the other end of the inner side of the belt (23) is movably clamped with a driving pulley (24).

8. A surveying apparatus positioning device for use in engineering surveying according to claim 7, characterised in that: The middle part of the driving pulley (24) is fixedly installed with a motor (25), the outer side of the motor (25) is fixedly connected with the outer side of the inner groove ring (26), the outer side of the inner rotating ring (21) is rotatably connected with the inner side of the inner groove ring (26), the inner wall of the inner rotating ring (21) is fixedly connected with a fixed frame (22), and the lower side of the fixed frame (22) is fixedly connected with the upper side of the surveying instrument main body (1).

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