Surveying and mapping locator for topographic surveying and mapping engineering

Abstract

The utility model relates to the technical field of surveying and mapping equipment, in particular to a surveying and mapping locator for topographic surveying and mapping engineering, which comprises support legs distributed annularly at equal intervals, and each support leg consists of a waist-shaped support cylinder, a waist-shaped telescopic rod and a support base. The height of the kidney-shaped telescopic rod is adjusted in the kidney-shaped supporting cylinder in a telescopic mode through a limiting piece, and the limiting piece comprises a limiting sleeve, an eccentric limiting roller, an arc-shaped limiting block and an arc-shaped shifting plate. The arc-shaped shifting plate is swung to drive the eccentric limiting roller to rotate so as to press or loosen the arc-shaped limiting block, and rapid locking or unlocking of the kidney-shaped telescopic rod is achieved. The bottom of the supporting base is of a stripe-shaped structure to enhance friction force, the kidney-shaped supporting cylinder is matched with the arc-shaped positioning sliding groove in the telescopic rod to slide, and the limiting stability is improved through the bottom ripple design of the arc-shaped limiting block. The structure is convenient to adjust, stable in positioning and suitable for complex terrains.

Description

Technical Field

[0001] This utility model relates to the field of surveying equipment technology, specifically a surveying and positioning instrument for topographic surveying engineering. Background Technology

[0002] In topographic surveying engineering, the surveying and positioning instrument is a key device for accurately measuring coordinates, elevation, distance, and orientation. The accuracy of a surveying and positioning instrument primarily depends on the stability of its base support, i.e., the surveying and positioning bracket. The most commonly used bracket is the tripod, which is highly versatile, easy to operate, and provides high stability.

[0003] Most existing tripods have height adjustment functions, and their leg structure adopts a telescopic form. When adjusting, the three sets of support legs adjust the height accordingly to achieve adjustments in levelness and height. However, after analyzing the existing tripods, it can be found that most of the leg telescopic structures use an extension threaded sleeve adjustment method, which has problems such as requiring large rotational force and inconvenient operation.

[0004] To address this, this technical solution designs a surveying and positioning instrument for topographic surveying engineering. Utility Model Content

[0005] The purpose of this invention is to provide a surveying and positioning instrument for topographic surveying engineering, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A topographic surveying and positioning instrument for engineering purposes includes a surveying and positioning instrument with a tripod mounted on its bottom. The tripod includes support legs arranged in a triangular pattern at equal intervals around its bottom. Each support leg includes a waist-shaped support cylinder, a waist-shaped telescopic rod, and a support base. The waist-shaped telescopic rod is telescopically inserted into the waist-shaped support cylinder. The support base is fixedly connected to the bottom of the waist-shaped telescopic rod and is in contact with the ground for support. A set of limiting components is installed at the end of the waist-shaped support cylinder. The inner side of the limiting components makes a swing-pressing contact with a local surface of the waist-shaped telescopic rod to limit the movement. This allows for adjustment and control of the insertion position of the waist-shaped telescopic rod inside the waist-shaped support cylinder, thereby achieving the overall telescopic length adjustment of the waist-shaped support cylinder and the waist-shaped telescopic rod, and thus efficiently adjusting the height and level of the surveying and positioning instrument on the tripod.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] Locking / unlocking can be accomplished by swinging the curved toggle, improving operational efficiency by more than 30%.

[0010] The design of the corrugated support base and the bottom of the arc-shaped limiting block increases the anti-slip resistance by 30%.

[0011] The eccentric limiting roller and the arc-shaped positioning groove work together to ensure axial locking without displacement.

[0012] The spring reset mechanism adapts to the height adjustment needs of different terrains. Attached Figure Description

[0013] Figure 1 This is a partial structural diagram of the support leg in a topographic mapping positioning instrument used in topographic surveying engineering.

[0014] Figure 2 This is a partial structural diagram of the limiting sleeve in a topographic mapping and positioning instrument used in topographic mapping engineering.

[0015] Figure 3 This is a partial structural diagram of the limiting sleeve, waist-shaped support cylinder, and waist-shaped telescopic rod in a topographic surveying and positioning instrument used in topographic surveying engineering.

[0016] Figure 4 This is a schematic diagram of the limiting roller in a topographic mapping positioning instrument.

[0017] The components include: waist-shaped support cylinder 10, waist-shaped telescopic rod 11, support base 12, limiting component 14, arc-shaped positioning groove 15, limiting sleeve 16, arc-shaped limiting block 17, lifting channel 18, rotating shaft 19, swing groove 20, lifting positioning column 21, pressure plate 22, eccentric limiting roller 23, arc-shaped actuating plate 24, rotating hole 25, and locking pin 26. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4 A topographic surveying and positioning instrument for engineering purposes includes a surveying and positioning instrument with a tripod mounted on its bottom. The tripod includes support legs arranged in a triangular pattern at equal intervals around its bottom. Each support leg includes a waist-shaped support cylinder 10, a waist-shaped telescopic rod 11, and a support base 12. The waist-shaped telescopic rod 11 is telescopically inserted into the waist-shaped support cylinder 10. The support base 12 is fixedly connected to the bottom of the waist-shaped telescopic rod 11 and is in contact with the ground for support. A set of limiting members 14 is installed at the end of the waist-shaped support cylinder 10. The inner side of the limiting members 14 makes a swing-pressing contact with a part of the surface of the waist-shaped telescopic rod 11 to limit its movement. This allows for adjustment and control of the insertion position of the waist-shaped telescopic rod 11 inside the waist-shaped support cylinder 10, thereby realizing the overall telescopic length of the waist-shaped support cylinder 10 and the waist-shaped telescopic rod 11, and thus efficiently adjusting the height and level of the surveying and positioning instrument on the upper side of the tripod.

[0023] In this embodiment of the invention, the bottom of the support base 12 is set with a striped structure to increase the contact friction with the ground. An arc-shaped positioning groove 15 is opened at the same position on the outer surface of the waist-shaped support cylinder 10 and the waist-shaped telescopic rod 11. When the waist-shaped telescopic rod 11 is placed inside the waist-shaped support cylinder 10 and extends and retracts, the arc-shaped positioning grooves 15 at the same position of the two synchronously contact and slide.

[0024] The limiting component 14 includes a limiting sleeve 16 fixedly fitted on the outer side of the bottom end of the waist-shaped support cylinder 10. A triangular protrusion is installed on one side of the limiting sleeve 16, with a swing groove 20 in the center. The bottom of the swing groove 20 connects downwards to the inner side of the limiting sleeve 16 via a lifting channel 18. An eccentric limiting roller 23 is rotatably installed inside the swing groove 20. A set of liftable arc-shaped limiting blocks 17 is installed inside the swing groove 20 directly below the eccentric limiting roller 23. The arc-shaped limiting blocks 17 are positioned above the arc-shaped positioning slide groove 15 on the waist-shaped telescopic rod 11, and their arc trajectory is the same as that of the arc-shaped positioning slide groove 15. A pressure plate 22 is installed at the top center of the arc-shaped limiting blocks 17. Lifting positioning columns 21 are symmetrically installed on the tops of the arc-shaped limiting blocks 17 on both sides of the pressure plate 22. A telescopic hole is opened on the inner side of the lifting channel 18 corresponding to the top of the lifting positioning column 21. The area is larger than the swing groove 20. The swing groove 20 is placed inside the telescopic hole and moves up and down. The bottom of the eccentric limiting roller 23 contacts the upper surface of the pressure plate 22. At the same time, an arc-shaped actuating plate 24 is installed on the outer side of the eccentric limiting roller 23. The arc-shaped actuating plate 24 is manually controlled to drive the eccentric limiting roller 23 to rotate. Utilizing the eccentric structure of the eccentric limiting roller 23, when the arc-shaped actuating plate 24 swings to a vertical angle, the bottom of the eccentric limiting roller 23 is separated from the top of the pressure plate 22. When the arc-shaped actuating plate 24 swings to a horizontal angle, the eccentric limiting roller 23 applies downward pressure to the pressure plate 22. At this time, the bottom of the arc-shaped limiting block 17 is controlled to contact the arc-shaped positioning groove 15 on the waist-shaped telescopic rod 11, thereby restricting the telescopic movement of the waist-shaped telescopic rod 11 inside the waist-shaped support cylinder 10. Thus, the axial movement and positioning of the waist-shaped telescopic rod 11 can be achieved by rotating the swinging arc-shaped actuating plate 24.

[0025] Specifically, the bottom of the arc-shaped limiting block 17 is set with a corrugated structure to increase the contact resistance with the arc-shaped positioning groove 15 at the top of the waist-shaped telescopic rod 11, that is, to increase the limiting force.

[0026] The top of the lifting positioning column 21 is elastically connected to the telescopic hole through a spring. When the spring is in a free state, it controls the arc-shaped limiting block 17 to rise upward, so that it separates from the arc-shaped positioning groove 15 on the waist-shaped telescopic rod 11.

[0027] In one embodiment of the present invention, in order to keep the radial pressure of the eccentric limiting roller 23 on the arc-shaped limiting block 17 stable after the arc-shaped actuating plate 24 swings to a horizontal angle, a locking pin 26 is installed on one side of the bottom of the arc-shaped actuating plate 24. The locking pin 26 has a locking hole on the outer wall of the limiting sleeve 16. The arc-shaped structure of the arc-shaped actuating plate 24 is used to make it fully fit with the outer side of the limiting sleeve 16, so as to ensure that the locking pin 26 can be locked and positioned with the locking hole.

[0028] The eccentric limiting roller 23 has rotating holes 25 on both sides of its end edge. The rotating shaft 19 is installed in the middle of both sides of the swing groove 20 corresponding to the rotating hole 25. The rotating shaft 19 is connected to the rotating hole 25 in a limiting rotational manner, thereby realizing the eccentric rotation of the eccentric limiting roller 23.

[0029] The working principle of this utility model is as follows: Unlocking: Move the arc-shaped toggle plate 24 to the vertical direction → the eccentric roller 23 releases the pressure plate 22 → the spring lifts the arc-shaped limit block 17 → the telescopic rod 11 can extend and retract.

[0030] Adjustment: Stretch or compress the waist-shaped telescopic rod 11 to the target height, and the arc-shaped positioning groove 15 will slide and guide synchronously.

[0031] Locking: Move the toggle plate 24 back to horizontal → eccentric roller 23 presses down the arc-shaped limit block 17 → corrugated bottom is embedded in the slide groove 15 → locking pin 26 is engaged in the locking hole to fix the position.

[0032] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A surveying positioning apparatus for topographic engineering, characterized by comprising: The surveying and positioning instrument is provided with a tripod at the bottom, the tripod comprises support legs which are arranged in a triangular distribution at the bottom in a ring shape and at equal intervals, the support legs comprise a waist-shaped support cylinder (10), a waist-shaped telescopic rod (11) inserted into the waist-shaped support cylinder (10), and a support base (12) fixed to the bottom of the telescopic rod (11); the bottom end of the waist-shaped support cylinder (10) is provided with a limiting piece (14), the limiting piece (14) comprises a limiting sleeve (16), an eccentric limiting roller (23), an arc-shaped limiting block (17), and an arc-shaped actuating plate (24), the arc-shaped limiting block (17) is elastically connected to the limiting sleeve (16) through a lifting positioning column (21), the eccentric limiting roller (23) is pressed or released when rotating, so as to make the arc-shaped limiting block (17) contact or separate from an arc-shaped positioning sliding groove (15) of the waist-shaped telescopic rod (11).

2. The surveying positioner for topographic engineering according to claim 1, characterized in that: The bottom of the support base (12) is in a stripe structure.

3. The surveying positioner for topographic engineering according to claim 1, characterized in that: The waist-shaped support cylinder (10) and the waist-shaped telescopic rod (11) are both provided with the arc-shaped positioning sliding groove (15) on the outer surfaces, and the waist-shaped telescopic rod (11) is placed in the waist-shaped support cylinder (10) and is telescopic, and the arc-shaped positioning sliding grooves (15) at the same positions of the two are synchronously contacted and slid.

4. The surveying positioner for topographic engineering according to claim 1, characterized in that: The limiting piece (14) further comprises a clamping pin (26) arranged at the bottom of the arc-shaped actuating plate (24) and a clamping hole arranged on the outer wall of the limiting sleeve (16), the clamping pin (26) and the clamping hole are matched to fix the horizontal position of the actuating plate.

5. The surveying positioning apparatus for topographic surveying engineering according to claim 1, characterized in that: The bottom of the arc-shaped limiting block (17) is in a corrugated structure.

6. The surveying positioner for topographic engineering according to claim 1, characterized in that: The top of the lifting positioning column (21) is elastically connected to the telescopic hole of the limiting sleeve (16) through a spring, and the arc-shaped limiting block (17) is separated from the arc-shaped positioning sliding groove (15) in the free state of the spring.

Images