Surveying and mapping device convenient to carry for surveying and mapping engineering

Abstract

The invention discloses a surveying and mapping engineering surveying and mapping device convenient to carry, which comprises a surveying and mapping tool body and a tripod base, three supporting legs are uniformly distributed on the outer side surface of the tripod base, and each supporting leg is connected with the tripod base through a rotating shaft; a screw rod is rotationally installed at the center position of the lower portion of the tripod base, the outer wall of the screw rod is sleeved with a nut in a threaded mode, the nut is connected with each supporting foot through a connecting rod, the two ends of the connecting rod are hinged to the nut and the supporting feet respectively, and the bottom end of the screw rod is connected with a servo motor; each supporting leg is composed of an outer rod and an inner rod which are connected in a sleeved mode, a rack is connected to the outer wall of each inner rod, a gear is rotationally installed on the outer wall of each outer rod, and each gear is connected with the corresponding screw through a linkage structure. According to the tripod, the linkage structure is arranged, so that the three supporting legs can be stretched or shortened synchronously while the three supporting legs are unfolded or folded, and erecting and adjusting of the tripod are easier and more convenient and easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of surveying and mapping tools, in particular to a portable surveying and mapping device for surveying and mapping engineering. Background Art

[0002] Surveying and mapping instruments are instruments and devices designed and manufactured for data collection, processing, and output for surveying and mapping operations. In geographic surveying and engineering construction planning and design, surveying and mapping devices are needed to measure various parameters required for work, such as orientation, distance, angle, height, mapping, and photogrammetry.

[0003] Surveying and mapping projects generally carry a retractable tripod support during surveying and mapping operations to stably set up surveying and mapping instruments at the surveying site. However, when the current tripod is in use, since each leg of the tripod is in a rotatable active state, in order to prevent the bracket from loosening during transportation, it is necessary to use a binding tool to tie the legs and then carry it, which is troublesome and inconvenient for workers to carry. At the same time, when the existing tripod is adjusted for the opening angle and telescopic length, the rotation angle and telescopic length of each leg are adjusted manually independently, which is troublesome to operate.

[0004] Therefore, we propose a portable surveying and mapping device for surveying and mapping engineering to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a surveying and mapping device that is easy to carry for surveying and mapping projects, so as to solve the problem that each leg of the tripod bracket of the existing surveying and mapping equipment proposed in the above background technology is in a rotatable active state. In order to prevent the bracket from loosening during transportation, it is necessary to use binding tools to tie the legs and then carry it, which is troublesome and inconvenient for workers to carry; at the same time, when the existing tripod bracket is adjusted for the opening angle and telescopic length, the rotation angle and telescopic length of each leg are adjusted manually independently, which is troublesome to operate.

[0006] To achieve the above object, the present invention provides the following technical solutions: A portable surveying and mapping device for surveying and mapping engineering, comprising a surveying and mapping tool body and a tripod base, wherein three legs are evenly distributed on the outer side of the tripod base, and each leg is connected to the tripod base through a rotating shaft, a screw is rotatably installed at the center position below the tripod base, a nut is threadedly sleeved on the outer wall of the screw, and the nut is connected to each leg through a connecting rod, and the two ends of the connecting rod are respectively hinged to the nut and the leg, a servo motor is connected to the bottom end of the screw, and the servo motor and the tripod base are limitedly connected through a plurality of limit rods; The support leg is composed of an outer rod and an inner rod which are sleeved with each other, and one end of the inner rod extending out of the outer rod is connected to a pointed head, the outer wall of the inner rod is connected to a rack, and a gear extending into the outer rod and meshing with the rack is rotatably installed on the outer wall of the outer rod, and the gear is connected to the screw rod through a linkage structure; The linkage structure includes a worm coaxially connected to the screw, a worm wheel meshed with the periphery of the worm, a linkage belt 1 sleeved between the worm wheel and the rotating shaft, and a linkage belt 2 sleeved between the rotating shaft and the gear.

[0007] In a further embodiment, the surveying and mapping tool body adopts one of the theodolite, level, and total station.

[0008] In a further embodiment, an arc-shaped tail portion is provided at one end of the outer rod close to the tripod base, and the arc center of the arc-shaped tail portion coincides with the axis center of the rotating shaft.

[0009] In a further embodiment, a plurality of rollers are evenly mounted on the inner wall of the outer rod in a length direction, the rollers are symmetrically distributed about the outer rod, and the rollers are tightly fitted to the side walls of the inner rod.

[0010] In a further embodiment, the middle section of the roller protrudes outward to form a convex column, and the side wall of the inner rod is provided with a strip-shaped groove that matches the convex column.

[0011] In a further embodiment, a gear ring 1 and a gear ring 2 are coaxially mounted on the outer wall of the rotating shaft in sequence.

[0012] In a further embodiment, a gear ring three is coaxially fixed on the shaft of the worm wheel, and the gear ring one and the gear ring three are on the same vertical plane.

[0013] In a further embodiment, the linkage belt 1 adopts chain 1, and the chain is connected between gear ring 1 and gear ring 3.

[0014] In a further embodiment, a gear ring four is coaxially fixed on the shaft of the gear, and gear ring two and gear ring four are on the same vertical plane.

[0015] In a further embodiment, the linkage belt 2 adopts chain 2, and chain 2 is sleeved between gear ring 2 and gear ring 4.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges a screw, a nut, a connecting rod, a servo motor and a limit rod, so that when the servo motor drives the screw to rotate, the hinged ends of the three connecting rods and the nuts can be driven to rise or fall at the same time through the thread action between the screw and the nut, and then the three legs are simultaneously opened or closed, so as to achieve synchronous adjustment of the angle rotation of the three legs, thereby greatly improving the efficiency of the tripod erection and adjustment.

[0017] 2. Due to the restraining effect of the connecting rod, the supporting legs are no longer loose relative to the screw rod, and the three supporting legs can be locked relative to the tripod base without the aid of binding tools, which effectively avoids the trouble of the supporting legs of the tripod becoming loose during transportation, thereby enhancing the portability of the entire device.

[0018] 3. The present invention sets a linkage structure so that when the screw rotates forward or reversely, the linkage structure can drive the gear to rotate, and then through the meshing action of the gear and the rack, the inner rod is driven to retract or extend relative to the outer rod, thereby adjusting the length of the legs, so that the three legs can be extended or shortened synchronously while being spread out or retracted, making the installation and adjustment of the tripod simpler and easier to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention in a contracted state; Figure 3 This is a schematic diagram of the front cross-sectional structure of the present invention in an expanded state; Figure 4 It is a schematic diagram of the cross-sectional structure of the tripod base of the present invention from top view; Figure 5 It is a schematic diagram of the cross-sectional structure of the bracket of the present invention when viewed from top.

[0020] In the figure: 1. surveying tool body; 2. tripod base; 3. support leg; 31. outer rod; 311. arc-shaped tail; 312. roller; 313. boss; 32. inner rod; 33. pointed head; 34. gear; 341. gear ring four; 35. rack; 4. rotating shaft; 41. gear ring one; 42. gear ring two; 5. screw; 6. nut; 7. connecting rod; 8. servo motor; 9. limit rod; 10. worm; 11. worm wheel; 111. gear ring three; 12. linkage belt one; 121. chain one; 13. linkage belt two; 131. chain two. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1 A portable surveying and mapping device for surveying and mapping engineering comprises a surveying and mapping tool body 1 and a tripod base 2 for supporting the surveying and mapping tool body 1, wherein the surveying and mapping tool body 1 can be but not limited to one of the theodolite, the level, and the total station, as long as it is a surveying and mapping instrument that needs to be mounted on a tripod for use, three legs 3 are evenly distributed on the outer side of the tripod base 2, and each leg 3 is connected to the tripod base 2 through a rotating shaft 4, so that the three legs 3 can rotate relative to the tripod base 2, so as to provide stronger stability by opening a larger angle according to the actual ground conditions, or folding them into a smaller state when the site is limited, which is convenient for hypothetical layout, and when the three legs 3 are in a fully folded state, it is also convenient for staff to carry.

[0025] See also Figure 1-3, considering that the three legs 3 of the tripod are relatively independent when actually used, each leg 3 needs to be adjusted and positioned in turn when it needs to be spread out, and the whole process is troublesome to operate, so a screw rod 5 is rotatably installed at the center position below the tripod base 2, and a nut 6 is threadedly sleeved on the outer wall of the screw rod 5, and the nut 6 is connected to each leg 3 through a connecting rod 7, and the two ends of the connecting rod 7 are respectively hinged to the nut 6 and the leg 3, and the bottom end of the screw rod 5 is connected to a servo motor 8, and the limiting rod 9 is spaced apart from the connecting rod 7. When the servo motor 8 drives the screw rod 5 to rotate relative to the tripod base 2, the nut 6 will move upward or downward along the screw rod 5 under the drive of the thread, and then the three legs 3 are synchronously spread out or retracted through the connecting rod 7, so that the angle adjustment operation of the legs 3 is faster, and the servo motor 8 is limitedly connected to the tripod base 2 through a plurality of limiting rods 9, so as to limit the servo motor 8 to prevent the main part of the servo motor 8 from axial deflection; See also Figure 2-3 In consideration of the different surveying heights required in actual use, the support leg 3 is composed of an outer rod 31 and an inner rod 32 which are sleeved with each other. One end of the inner rod 32 passes through the inner part of the outer rod 31, so that the lengths of the two can be adjusted telescopically. The inner rod 32 is connected to a pointed head 33 at one end of the inner rod 32 extending out of the outer rod 31. The pointed head 33 is sharp, so that it is easy to insert into the ground for more stable positioning. In order to facilitate the telescopic adjustment and locking between the outer rod 31 and the inner rod 32, the outer rod 31 is arranged close to the screw. A gear 34 is rotatably installed on one side of the rod 5, and the gear 34 is close to the lower end of the outer rod 31, and the outer periphery of the gear 34 extends into the outer rod 31. The outer wall of the inner rod 32 close to the gear 34 is connected to a rack 35, and the gear 34 is meshed with the rack 35. By rotating the gear 34 and utilizing the meshing action of the gear 34 and the rack 35, the inner rod 32 can be driven to retract or extend relative to the outer rod 31 to achieve telescopic adjustment. When the gear 34 is locked and does not rotate, the meshing action can be used to lock the length.

[0026] See also Figure 2-3 In order to facilitate the angle adjustment of the outer rod 31 relative to the tripod base 2, an arc-shaped tail portion 311 is provided at one end of the outer rod 31 close to the tripod base 2, and the arc center of the arc-shaped tail portion 311 coincides with the axis center of the rotating shaft 4. A notch is provided on the side of the tripod base 2 corresponding to the position of each arc-shaped tail portion 311, so that the arc-shaped tail portion 311 can be folded into the interior of the tripod base 2 for storage when the outer rod 31 rotates.

[0027] See also Figure 2-4In order to further improve the convenience of the tripod during contraction, extension and length adjustment, a linkage structure is used to connect the gear 34 and the screw rod 5, so that when the screw rod 5 rotates, the gear 34 can be driven to rotate through the linkage structure. The linkage structure includes a worm 10 coaxially connected to the screw rod 5, a worm wheel 11 meshed on the periphery of the worm 10, a linkage belt 12 sleeved between the worm wheel 11 and the rotating shaft 4, and a linkage belt 2 13 sleeved between the rotating shaft 4 and the gear 34. The three worm wheels 11 are symmetrically distributed on the periphery of the worm 10. When the worm 10 rotates, the three worm wheels 11 are synchronously driven to rotate. The worm wheel 11 drives the rotating shaft 4 to rotate through the linkage belt 12, thereby rotating the support leg 3. The rotating shaft 4 drives the gear 34 to rotate through the linkage belt 2 13, thereby extending and retracting the support leg 3.

[0028] See also Figure 4-5 In order to improve the stability of the linkage structure transmission, the outer wall of the rotating shaft 4 is provided with a coaxial gear ring 1 41 and a gear ring 2 42, and a gear ring 3 111 is coaxially fixed on the shaft of the worm wheel 11, and the gear ring 1 41 and the gear ring 3 111 are on the same vertical plane. The linkage belt 1 12 adopts a chain 121, and the chain 121 is sleeved between the gear ring 1 41 and the gear ring 3 111, and the gear ring 4 341 is coaxially fixed on the shaft of the gear 34, and the gear ring 2 42 and the gear ring 4 341 are on the same vertical plane. The linkage belt 2 13 adopts a chain 2 131, and the chain 2 131 is sleeved between the gear ring 2 42 and the gear ring 4 341. When the chain and the gear ring are sleeved, the teeth of the gear ring can be stuck in the chain hole of the chain, thereby making the transmission more stable and not easy to derail and slip.

[0029] See also Figure 5 In order to further improve the smoothness of the extension and retraction of the outer rod 31 and the inner rod 32, a plurality of rollers 312 are installed on the inner wall of the outer rod 31 so as to rotate evenly along the length direction. The rollers 312 are symmetrically distributed on both sides of the inner rod 32 with respect to the outer rod 31, and are located in the gap between the inner rod 32 and the outer rod 31. Since the rollers 312 are tightly fitted with the side walls of the inner rod 32, while limiting the front and rear positions of the inner rod 32, the rotation of the rollers 312 themselves can also be used to reduce friction, so that the extension and retraction of the inner rod 32 is smoother.

[0030] See also Figure 5 In order to further improve the stability of the outer rod 31 and the inner rod 32 during extension and retraction and reduce the shaking of the support leg 3, the middle section of the roller 312 is arranged to protrude outward to form a convex column 313, and the side wall of the inner rod 32 is provided with a strip-shaped groove that matches the convex column 313, so that the convex column 313 can not only limit the front and rear positions of the inner rod 32, but also limit the left and right positions of the inner rod 32, effectively reducing the problem of the left and right shaking of the inner rod 32, and making the entire support leg 3 more stable during adjustment.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A portable surveying and mapping device for surveying and mapping engineering, comprising a surveying and mapping tool body (1) and a tripod base (2), characterized in that: Three legs (3) are evenly distributed on the outer side surface of the tripod base (2), and each leg (3) is connected to the tripod base (2) via a rotating shaft (4). A screw rod (5) is rotatably mounted at the center position below the tripod base (2). A nut (6) is threadedly sleeved on the outer wall of the screw rod (5), and the nut (6) is connected to each leg (3) via a connecting rod (7). The two ends of the connecting rod (7) are respectively hinged to the nut (6) and the leg (3). The bottom end of the screw rod (5) is connected to a servo motor (8), and the servo motor (8) is limitedly connected to the tripod base (2) via a plurality of limit rods (9). The support foot (3) is composed of an outer rod (31) and an inner rod (32) which are sleeved together, and one end of the inner rod (32) extending out of the outer rod (31) is connected to a pointed portion (33), an outer wall of the inner rod (32) is connected to a rack (35), and a gear (34) is rotatably mounted on the outer wall of the outer rod (31) and extends into the outer rod (31) and meshes with the rack (35), and the gear (34) is connected to the screw rod (5) via a linkage structure; The linkage structure comprises a worm (10) coaxially connected to the screw (5), a worm wheel (11) meshed with the periphery of the worm (10), a linkage belt (12) sleeved between the worm wheel (11) and the rotating shaft (4), and a linkage belt (13) sleeved between the rotating shaft (4) and the gear (34).

2. A portable surveying and mapping device for surveying and mapping engineering according to claim 1, characterized in that: The surveying and mapping tool body (1) is one of a theodolite, a level and a total station.

3. A portable surveying and mapping device for surveying and mapping engineering according to claim 1, characterized in that: An arc-shaped tail portion (311) is provided at one end of the outer rod (31) close to the tripod base (2), and the arc center of the arc-shaped tail portion (311) coincides with the axis center of the rotating shaft (4).

4. A portable surveying and mapping device for surveying and mapping engineering according to claim 1, characterized in that: A plurality of rollers (312) are evenly mounted on the inner wall of the outer rod (31) in a rotating manner along the length direction. The rollers (312) are symmetrically distributed about the outer rod (31), and the rollers (312) are tightly fitted to the side wall of the inner rod (32).

5. A portable surveying and mapping device for surveying and mapping engineering according to claim 4, characterized in that: The middle section of the roller (312) protrudes outward to form a convex column (313), and the side wall of the inner rod (32) is provided with a strip-shaped groove that matches the convex column (313).

6. A portable surveying and mapping device for surveying and mapping engineering according to claim 1, characterized in that: A first gear ring (41) and a second gear ring (42) are coaxially mounted on the outer wall of the rotating shaft (4) in sequence.

7. A portable surveying and mapping device for surveying and mapping engineering according to claim 6, characterized in that: A gear ring three (111) is coaxially fixed on the shaft of the worm wheel (11), and the gear ring one (41) and the gear ring three (111) are located on the same vertical plane.

8. A portable surveying and mapping device for surveying and mapping engineering according to claim 7, characterized in that: The linkage belt one (12) adopts chain one (121), and chain one (121) is sleeved between gear ring one (41) and gear ring three (111).

9. The portable surveying and mapping device for surveying and mapping engineering according to claim 6, characterized in that: A fourth gear ring (341) is coaxially fixed on the shaft of the gear (34), and the second gear ring (42) and the fourth gear ring (341) are located on the same vertical plane.

10. A portable surveying and mapping device for surveying and mapping engineering according to claim 9, characterized in that: The linkage belt 2 (13) adopts chain 2 (131), and chain 2 (131) is sleeved between gear ring 2 (42) and gear ring 4 (341).

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