Leveling device for topographic survey

Abstract

The utility model belongs to the technical field of leveling, and particularly relates to a leveling device for topographic survey, which comprises a telescopic support, a self-leveling mechanism and an observation mirror, the self-leveling mechanism is arranged on the telescopic support, the observation mirror is arranged on the self-leveling mechanism through a fixing disc, each support leg of the telescopic support can be adjusted in a telescopic manner, and the observation mirror is arranged on the self-leveling mechanism. The leveling rods are arranged on the fixed disc, so that the levelness of the self-leveling mechanism is roughly adjusted according to different terrains, the self-leveling mechanism can automatically and accurately level after being roughly adjusted, the observation mirror is used for observing the leveling rods at the front end and the rear end and reading numerical values on the leveling rods, and finally a detection result is measured; when the bubble on the circular level is in the center, the observation mirror is in a horizontal state. The self-leveling mechanism can automatically keep a balance state under the action of the gravity ball, repeated leveling is not needed, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of leveling measurement, in particular to a leveling measurement device for terrain surveying. Background Art

[0002] The level is an instrument for measuring the height difference between two points on the ground. When measuring, it is necessary to ensure that the observation mirror is parallel to the horizontal plane, otherwise it will lead to measurement errors.

[0003] The conventional way to adjust the level is to first use the telescopic bracket to make rough adjustments for leveling, and then use the angle screw button in conjunction with the level bubble to make fine adjustments. When adjusting, multiple angle screw buttons are required to adjust step by step and slowly to gradually make the level bubble reach a horizontal state.

[0004] Because three points are used to locate a horizontal plane, the entire process requires repeated adjustments of at least three angle screw buttons. It is also common that the adjustment range is too large and the adjustment has to be reversed, which greatly affects the work efficiency during outdoor inspection operations. Utility Model Content

[0005] In view of the above situation, in order to solve the above problems, the utility model proposes a leveling measuring device for terrain surveying that can automatically level. The self-leveling mechanism under the observation mirror can automatically maintain a balanced state under the action of a gravity ball, without the need for repeated leveling, thereby improving work efficiency.

[0006] The technical solution adopted by the utility model is as follows: a leveling measuring device for terrain surveying, comprising a telescopic bracket, a self-leveling mechanism and an observation mirror, the self-leveling mechanism being arranged on the telescopic bracket, the observation mirror being arranged on the self-leveling mechanism through a fixed plate, each leg of the telescopic bracket being capable of telescopic adjustment so as to roughly adjust the horizontality of the self-leveling mechanism according to different terrains, the self-leveling mechanism being capable of automatic and accurate leveling after rough adjustment, the observation mirror being used to observe the level rods at the front and rear ends, and to read the values ​​on the level rods, and finally to measure the test results, the level rods being prior art and not described herein, the fixed plate being capable of rotating relative to the self-leveling mechanism, so that the observation mirror can observe in any direction; before detection, in order to confirm whether the current observation mirror is in a horizontal state and to prevent the self-leveling mechanism from malfunctioning and causing abnormal test results, a circular level is installed on the fixed plate, and when the bubble on the circular level is centered, it indicates that the observation mirror is in a horizontal state.

[0007] Furthermore, the self-leveling mechanism includes a base, a ball seat, a gravity ball, a clamping ring, a clamping nut and a horizontal connecting plate, the base is arranged at the upper end of the telescopic bracket, the ball seat is hinged at the center of the upper wall of the base, the gravity ball is arranged at the lower end of the ball seat, the clamping ring is arranged around the ball seat and is arranged on the upper wall of the base, the clamping nut is sleeved on the outer wall of the clamping ring, and the horizontal connecting plate is arranged at the upper end of the ball seat. The horizontality of the base is limited by the telescopic bracket, and under the action of the gravity ball, the line connecting the center of the ball seat and the center of the gravity ball is always consistent with the direction of gravity, so that the horizontal connecting plate at the upper end of the ball seat remains horizontal without repeated adjustment. It should be noted that during the automatic leveling of the ball seat, the observation mirror must be removed to prevent the weight of the observation mirror from interfering with the gravity ball and causing malfunctions during the leveling process.

[0008] Furthermore, a ball hole is provided on the upper wall of the base, an outer spherical surface is provided on the outer side of the ball hole, and a tightening groove is provided on the outer side of the outer spherical surface; after the ball seat is leveled, the ball seat needs to be fixed by a clamping ring, and in order to prevent the ball seat from shifting during the fixing process, a damping cavity is provided in the middle of the base, and the damping cavity is filled with damping fluid; the ball seat is hinged in the ball hole, and the clamping nut is arranged in the tightening groove.

[0009] Furthermore, a pressure block is provided in an array at an interval on the upper end of the clamping ring, a thread is provided on the outer wall of the pressure block, an inner spherical surface one is provided on the inner side of the pressure block, the inner spherical surface one is adapted to the ball diameter of the ball seat, an inner spherical surface two is provided below the inner spherical surface one, the inner spherical surface two is adapted to the ball diameter of the outer spherical surface; the clamping nut is adapted to the thread, and in order to facilitate the rotation of the clamping nut, a rotating rod is provided in an array on the outer side of the upper wall of the clamping nut, when the clamping nut is rotated to move upward, the pressure blocks arranged in the array will shrink inward and press on the ball seat to fix the ball seat, and when the clamping nut is rotated to move downward, the ball seat is separated from the pressure block, and the ball seat can rotate freely under the action of the gravity ball.

[0010] Furthermore, a roughened groove is provided in a circumferential array on the upper end of the outer side wall of the ball seat, and the roughened groove cooperates with the pressure block. When the pressure block is pressed on the roughened groove, the friction between the two can be increased to achieve a better fixing effect. In order to prevent interference with the observation mirror when the rotating rod is rotated, an extension column is provided on the upper end of the ball seat, and the horizontal connecting plate is provided on the extension column. The length of the extension column can be adjusted automatically, and the extension column can increase the working space of the tightening nut; a ball groove is provided at the lower end of the ball seat, and the gravity ball is arranged in the ball groove.

[0011] The beneficial effects achieved by the utility model using the above structure are as follows:

[0012] 1. Under the action of the gravity ball, the self-leveling mechanism can automatically adjust the horizontal connection plate to a horizontal state without repeated adjustment;

[0013] 2. Install the observation mirror after leveling the horizontal connection plate to prevent the weight of the observation mirror from affecting the gravity ball and prevent the horizontal connection plate from being overloaded due to the gravity of the observation mirror;

[0014] 3. When the horizontal connection plate is leveled, the clamping ring can be separated from the ball seat. When the horizontal connection plate is leveled, the clamping ring can fix the ball seat under the action of the clamping nut to prevent the ball seat from shifting;

[0015] 4. The damping cavity in the base is filled with damping fluid, which can provide a certain damping and buffering effect on the ball seat and the gravity ball. When the horizontal connecting plate is leveled, it prevents external force deviation during the process of tightening the compression nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a leveling measuring device for terrain surveying proposed by the utility model;

[0017] Figure 2 It is a structural diagram of the self-leveling mechanism;

[0018] Figure 3 It is a cross-sectional view of the self-leveling mechanism;

[0019] Figure 4 This is an exploded view of the self-leveling mechanism;

[0020] Figure 5 is a cross-sectional view of the base;

[0021] Figure 6 is a cross-sectional view of the clamping ring;

[0022] Figure 7 This is a cross-sectional view of the ball seat.

[0023] Among them, 1. telescopic bracket, 2. self-leveling mechanism, 3. observation mirror, 4. fixed plate, 5. circular level, 6. base, 7. ball seat, 8. gravity ball, 9. clamping ring, 10. clamping nut, 11. horizontal connecting plate, 12. rotating rod, 13. damping chamber, 14. ball hole, 15. outer spherical surface, 16. tightening groove, 17. pressure block, 18. thread, 19. inner spherical surface one, 20. inner spherical surface two, 21. ball groove, 22. roughening groove, 23. extension column.

[0024] The accompanying drawings are used to provide a further understanding of the present invention. ， And it constitutes a part of the specification, and is used to explain the utility model together with the embodiments of the utility model, and does not constitute a limitation of the utility model. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] like Figure 1 As shown, a leveling device for terrain surveying comprises a telescopic bracket 1, a self-leveling mechanism 2 and an observation mirror 3. The self-leveling mechanism 2 is arranged on the telescopic bracket 1, and the observation mirror 3 is arranged on the self-leveling mechanism 2 through a fixed plate 4. Each leg of the telescopic bracket 1 can be telescopically adjusted so as to roughly adjust the horizontality of the self-leveling mechanism 2 according to different terrains. The self-leveling mechanism 2 can automatically and accurately level after rough adjustment. The observation mirror 3 is used to observe the level rods at the front and rear ends and read the values ​​on the level rods to finally measure the test results. The level rod is a prior art and will not be described here. The fixed plate 4 can rotate relative to the self-leveling mechanism 2, so that the observation mirror 3 can observe in any direction. Before the test, in order to confirm whether the current observation mirror 3 is in a horizontal state and prevent the self-leveling mechanism 2 from malfunctioning and causing abnormal test results, a circular level 5 is installed on the fixed plate 4. When the bubble on the circular level 5 is centered, it indicates that the observation mirror 3 is in a horizontal state.

[0027] like Figure 2-Figure 4 As shown, the self-leveling mechanism 2 includes a base 6, a ball seat 7, a gravity ball 8, a clamping ring 9, a clamping nut 10 and a horizontal connecting plate 11. The base 6 is arranged at the upper end of the telescopic bracket 1, the ball seat 7 is hinged at the center of the upper wall of the base 6, the gravity ball 8 is arranged at the lower end of the ball seat 7, the clamping ring 9 surrounds the ball seat 7 and is arranged on the upper wall of the base 6, the clamping nut 10 is sleeved on the outer wall of the clamping ring 9, and the horizontal connecting plate 11 is arranged at the upper end of the ball seat 7. The horizontality of the base 6 is limited by the telescopic bracket 1, and under the action of the gravity ball 8, the line connecting the center of the ball seat 7 and the center of the gravity ball 8 is always consistent with the direction of gravity, so that the horizontal connecting plate 11 at the upper end of the ball seat 7 remains in a horizontal state without repeated adjustment; it should be noted that during the automatic leveling process of the ball seat 7, the observation mirror 3 must be removed to prevent the weight of the observation mirror 3 from interfering with the gravity ball 8 and causing malfunctions during the leveling process.

[0028] like Figure 3 and Figure 5 As shown, a ball hole 14 is provided on the upper wall of the base 6, an outer spherical surface 15 is provided on the outer side of the ball hole 14, and a tightening groove 16 is provided on the outer side of the outer spherical surface 15; when the ball seat 7 is leveled, the ball seat 7 needs to be fixed by a clamping ring 9. In order to prevent the ball seat 7 from shifting during the fixing process, a damping chamber 13 is provided in the middle of the base 6, and the damping chamber 13 is filled with damping fluid; the ball seat 7 is hinged in the ball hole 14, and the clamping nut 10 is arranged in the tightening groove 16.

[0029] like Figure 3 , Figure 5 and Figure 6 As shown, a pressure block 17 is provided in an array at an interval on the upper end of the clamping ring 9, and a thread 18 is provided on the outer wall of the pressure block 17. An inner spherical surface 19 is provided on the inner side of the pressure block 17, and the inner spherical surface 19 is adapted to the ball diameter of the ball seat 7. An inner spherical surface 20 is provided below the inner spherical surface 19, and the inner spherical surface 20 is adapted to the ball diameter of the outer spherical surface 15; the clamping nut 10 is adapted to the thread 18. In order to facilitate the rotation of the clamping nut 10, a rotating rod 12 is provided in an array on the outer side of the upper wall of the clamping nut 10. When the clamping nut 10 is rotated to move upward, the pressure blocks 17 arranged in the array will shrink inward and press on the ball seat 7 to fix the ball seat 7. When the clamping nut 10 is rotated to move downward, the ball seat 7 is separated from the pressure block 17, and the ball seat 7 can rotate freely under the action of the gravity ball 8.

[0030] like Figure 7 As shown, a roughened groove 22 is provided in a circumferential array on the upper end of the outer wall of the ball seat 7. The roughened groove 22 cooperates with the pressure block 17. When the pressure block 17 is pressed on the roughened groove 22, the friction between the two can be increased to achieve a better fixing effect. In order to prevent interference with the observation mirror 3 when the rotating rod 12 is rotated, an extension column 23 is provided on the upper end of the ball seat 7. The horizontal connecting plate 11 is arranged on the extension column 23. The length of the extension column 23 can be adjusted automatically. The extension column 23 can increase the working space of the clamping nut 10; a ball groove 21 is provided at the lower end of the ball seat 7, and the gravity ball 8 is arranged in the ball groove 21.

[0031] During specific operation, the observation mirror 3 and the fixing plate 4 are removed from the device, and then the length of each leg of the telescopic bracket 1 is adjusted to make the self-leveling mechanism 2 in a visually horizontal state to achieve a coarse adjustment effect.

[0032] Then rotate the clamping nut 10 to move the clamping nut 10 downward so that the pressure block 17 on the clamping ring 9 no longer fits the roughened groove 22 on the surface of the ball seat 7. At this time, the ball seat 7 will automatically swing under the action of the gravity ball 8 until the line connecting the center of the ball seat 7 and the center of the gravity ball 8 is consistent with the direction of gravity; at this time, the horizontal connecting plate 11 at the upper end of the extension column 23 is in a horizontal state.

[0033] Then, the compression nut 10 is screwed in the reverse direction to make the pressure block 17 on the compression ring 9 fit into the roughening groove 22 again. During the process of screwing the compression nut 10, the damping fluid in the damping chamber 13 has a certain damping effect on the gravity ball 8 and the ball seat 7, preventing the external force during tightening from causing shaking to the ball seat 7 and affecting the adjustment effect of the ball seat 7.

[0034] After retightening the compression nut 10, the ball seat 7 will no longer shake or deviate, and the fixed plate 4 will be reinstalled on the horizontal connecting plate 11. The observation mirror 3 on the fixed plate 4 is in a horizontal state at this time, and the observation mirror 3 can be rotated to a desired angle to observe the level rulers in front and behind, and the detection value can be read.

[0035] This solution does not require repeated adjustment of the angle screw button, and leveling can be completed by simply loosening the clamping nut 10 and tightening the clamping nut 10, thereby improving the efficiency of the entire detection operation.

[0036] It should be noted that, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.

[0037] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A leveling device for topographic survey, characterized in that: It comprises a telescopic bracket (1), a self-leveling mechanism (2) and an observation mirror (3), wherein the self-leveling mechanism (2) is arranged on the telescopic bracket (1), the observation mirror (3) is arranged on the self-leveling mechanism (2) via a fixed plate (4), and a circular level (5) is installed on the fixed plate (4); The self-leveling mechanism (2) comprises a base (6), a ball seat (7), a gravity ball (8), a clamping ring (9), a clamping nut (10) and a horizontal connecting plate (11), wherein the base (6) is arranged at the upper end of the telescopic bracket (1), the ball seat (7) is hinged to the center of the upper wall of the base (6), the gravity ball (8) is arranged at the lower end of the ball seat (7), the clamping ring (9) surrounds the ball seat (7) and is arranged on the upper wall of the base (6), the clamping nut (10) is sleeved on the outer wall of the clamping ring (9), and the horizontal connecting plate (11) is arranged at the upper end of the ball seat (7).

2. A leveling device for topographic surveying according to claim 1, characterized in that: A ball hole (14) is provided on the upper wall of the base (6), an outer spherical surface (15) is provided outside the ball hole (14), a tightening groove (16) is provided outside the outer spherical surface (15), and the clamping nut (10) is arranged in the tightening groove (16).

3. A leveling device for topographic surveying according to claim 2, characterized in that: A damping chamber (13) is provided in the middle of the base (6), and the damping chamber (13) is filled with damping fluid.

4. A leveling device for topographic surveying according to claim 3, characterized in that: The ball seat (7) is hinged in the ball hole (14).

5. A leveling device for topographic surveying according to claim 4, characterized in that: The upper end of the clamping ring (9) is provided with a pressure block (17) in an array at intervals, the outer wall of the pressure block (17) is provided with a thread (18), the inner side of the pressure block (17) is provided with an inner spherical surface 1 (19), and the lower side of the inner spherical surface 1 (19) is provided with an inner spherical surface 2 (20).

6. A leveling device for topographic surveying according to claim 5, characterized in that: The inner spherical surface 1 (19) is adapted to the ball diameter of the ball seat (7), the inner spherical surface 2 (20) is adapted to the ball diameter of the outer spherical surface (15), and the clamping nut (10) is adapted to the thread (18).

7. A leveling device for topographic surveying according to claim 5, characterized in that: An array of rotating rods (12) is provided on the outer side of the upper wall of the compression nut (10).

8. A leveling device for topographic surveying according to claim 5, characterized in that: The upper end of the outer wall of the ball seat (7) is provided with a roughened groove (22) in a circumferential array, the roughened groove (22) cooperates with the pressing block (17), the upper end of the ball seat (7) is provided with an extended column (23), the horizontal connecting plate (11) is arranged on the extended column (23), the lower end of the ball seat (7) is provided with a ball groove (21), and the gravity ball (8) is arranged in the ball groove (21).

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