Leveling device capable of conveniently adjusting observation distance

Abstract

The utility model discloses a leveling device capable of conveniently adjusting an observation distance, and relates to the technical field of elevation measurement, the leveling device comprises a leveling instrument with an adjusting seat at the bottom, and three supporting legs are rotatably connected to the peripheral side of the lower surface of the adjusting seat. Through cooperative arrangement of the sliding rod, the adjusting pipe, the linkage rod, the connector, the inner screw ring and other structures, when the supporting legs are unfolded for measurement, the adjusting pipe slides to the bottom end of the sliding rod to be in screw joint with the inner screw ring installed at the bottom end of the sliding rod, the whole device is supported from the peripheral side, the stability of the whole device during measurement is improved, and when a user needs to replace a reference point for measurement, the user can conveniently carry out measurement. A connector is in threaded connection with an inner threaded ring installed at the top end of a sliding rod through an adjusting pipe, three linkage rods are made to pull and fix three supporting legs correspondingly, it is prevented that when a user transfers the whole device, the supporting legs are unfolded, the user is prevented from moving the measuring device, and it is avoided as much as possible that existing measuring equipment is inconvenient to operate in the circulating unfolding and folding process; and the user is inconvenient to move the whole equipment.

Description

Technical Field

[0001] The present application relates to the technical field of elevation measurement, and in particular to a leveling device capable of conveniently adjusting an observation distance. Background Art

[0002] Leveling is the process of measuring the height difference between two points on the ground using a horizontal line of sight and a level rod, so that the elevation of an unknown point can be deduced from the elevation of a known point. Usually, starting from the leveling origin or any known elevation point, the elevation of each point is measured station by station along the selected leveling route.

[0003] The utility model patent with announcement number CN212107712U proposes a leveling measuring device that can conveniently adjust the observation distance, including a mounting plate and a level arranged on the top of the mounting plate, the side wall of the mounting plate is rotatably connected with a symmetrically distributed guide rod, the inner wall of the guide rod is provided with a through hole, the inner side wall of the through hole is slidably connected with a support rod, and the bottom of the support rod is fixed with a support foot; the bottom of the mounting plate is fixed with a threaded rod, the threaded rod is threadedly connected with a storage plate, the side wall of the storage plate is slidably connected with a folding rod, one end of the folding rod away from the storage plate passes through the through hole and extends, the end of the folding rod placed outside the guide rod is rotatably connected to a limiting block, and the limiting block can be limited to the side wall of the guide rod.

[0004] The above-mentioned measuring device drives the folding rod, support rod, guide rod and limit block to move in coordination by rotating the mounting plate, thereby providing stable support for the measuring instrument, and uses the limit block to limit the position of the guide rod after storage for easy storage, thereby facilitating the movement of the entire device, thereby solving the problem that the existing measuring equipment is inconvenient to operate during the cyclic expansion and storage process, making it inconvenient for users to move the entire device. The present application adopts another technical solution to solve the above-mentioned technical problem. Utility Model Content

[0005] The utility model aims to solve or at least alleviate the problem that the existing measuring equipment is inconvenient to operate during the cyclic unfolding and storage process, which makes it inconvenient for the user to move the whole equipment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A leveling device capable of conveniently adjusting the observation distance comprises a level with an adjusting seat installed at the bottom, three supporting legs are rotatably connected to the peripheral side of the lower surface of the adjusting seat, a limiting assembly for limiting the supporting legs is installed at the center of the lower surface of the adjusting seat, the limiting assembly comprises a sliding rod vertically installed at the center of the adjusting seat, an adjusting tube is slidably connected to the sliding rod, and a linkage rod is arranged between each supporting leg and the adjusting tube, both ends of the linkage rod are rotatably connected to the adjusting tube and the supporting leg respectively, both ends of the adjusting tube extend outward to form a joint, both ends of the sliding rod are rotatably connected to an inner screw ring through a fixed tube, when the supporting leg is in a retracted state, the joint located at the top is embedded in the inner cavity of the inner screw ring at the top end of the sliding rod, and when the supporting leg is in an extended state, the joint located at the bottom is embedded in the inner cavity of the inner screw ring at the bottom end of the sliding rod.

[0008] By adopting the above technical solution, when the user uses it, he slides the adjusting tube downward along the sliding rod. Since the two ends of the linkage rod are rotatably connected to the supporting legs and the adjusting tube respectively, the three supporting legs can be spread out by rotating the linkage rod. When the joint at the bottom end of the adjusting tube is moved to the position of the inner screw ring below, the user rotates the inner screw ring to screw the joint into the inner cavity of the inner screw ring below, and the supporting legs can be stably supported by the three linkage rods, which is convenient for the user to measure. When the user needs to change the reference point for measurement, the user can slide the adjusting tube upward and screw the joint at the top of the adjusting tube into the inner cavity of the inner screw ring above to fix the adjusting tube. At this time, the three linkage rods respectively pull and fix the three supporting legs to prevent the user from spreading the supporting legs when transferring the overall device, which hinders the user from moving the measuring device, and avoids the problem that the existing measuring equipment is inconvenient to operate during the cyclic expansion and storage process, which makes it inconvenient for the user to move the overall equipment.

[0009] Optionally, the support leg includes three support tubes whose top ends are rotatably connected to the adjustment seat through pins, and a support rod is slidably connected to the inner cavity of the bottom end of each support tube.

[0010] By adopting the above technical solution, the support tube is rotatably connected to the adjustment seat, so that the user can open or gather the three support legs by rotating the support tube, and slide the support rod at the bottom end of the support tube to adjust the length of the entire support leg.

[0011] Optionally, one end of the support rod located outside the support tube is fixedly connected to a support foot, a limit seat is welded to the bottom end of the support tube, a limit bolt threadedly connected to the limit seat is passed through the outer wall of the limit seat, and one end of the limit bolt located in the inner cavity of the limit seat abuts against the outer surface of the support rod.

[0012] By adopting the above technical solution, when the user adjusts the support rod at the bottom to an appropriate height, the limit bolt can be screwed into the inner cavity of the limit seat to squeeze the support rod through the limit bolt so that the support rod and the limit seat are relatively fixed, thereby minimizing the support rod from shrinking into the inner cavity of the support tube after receiving pressure.

[0013] Optionally, the adjusting tube has a circular tubular structure, and earrings are welded on the outer wall of the middle section of the adjusting tube and the side wall of the limiting seat close to the adjusting tube, and the two ends of the linkage rod are rotatably connected to the limiting seat and the adjusting tube respectively through the earrings.

[0014] By adopting the above technical solution, earrings are welded on the outer wall of the adjusting tube and the limit seat, and the two ends of the linkage rod are respectively rotated and connected with the adjusting tube and the limit seat through the earrings, so as to support and fix the supporting legs by adjusting the angle between the linkage rod and the sliding rod.

[0015] Optionally, the outer diameter of the joint is equal to the inner diameter of the inner screw ring, and an outer surface of the joint is provided with an outer thread that matches the inner screw ring.

[0016] By adopting the above technical solution and using a threaded connection method, not only is the connection stable, but it is also convenient for users to connect and disassemble the joint.

[0017] Optionally, a laser pen is embedded in the bottom end of the slide bar to facilitate the user to align the level with the reference point.

[0018] By adopting the above technical solution, when measuring, the user can turn on the laser pen and generate laser vertically downward. The user only needs to align the laser point with the reference point and level the level before measuring, which makes it convenient for the user to align the level with the reference point.

[0019] In summary, the beneficial effects of this application are as follows:

[0020] The present application cooperates with structures such as sliding rods, adjusting tubes, linkage rods, joints and inner screw rings. When the support legs are unfolded for measurement, the adjusting tube slides to the bottom end of the sliding rod and is screwed to the inner screw ring installed at the bottom end of the sliding rod, thereby supporting the entire device from the circumferential side and improving the stability of the entire device during measurement. When the user needs to change the reference point for measurement, the adjusting tube can screw the joint to the inner screw ring installed at the top of the sliding rod, so that the three linkage rods respectively pull and fix the three support legs, preventing the support legs from being spread when the user transfers the entire device, thereby preventing the user from moving the measuring device. This avoids the problem that the existing measuring equipment is inconvenient to operate during the cyclic unfolding and storage process, which makes it inconvenient for the user to move the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall cross-sectional structure of this application;

[0022] Figure 2 This application Figure 1 A magnified view of the local details at center A;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the regulating tube of the present application.

[0024] Explanation of the accompanying reference numerals: 1. Level; 2. Adjustment seat; 3. Support tube; 4. Limit seat; 5. Support rod; 6. Limit bolt; 7. Sliding rod; 8. Adjustment tube; 9. Earring; 10. Linkage rod; 11. Joint; 12. Fixed tube; 13. Inner screw ring; 14. Laser pen. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-3 This application is described in further detail.

[0026] See also Figure 1-3 A leveling device capable of conveniently adjusting the observation distance comprises a level 1 with an adjustment seat 2 installed at the bottom. The user can use the level 1 in conjunction with an external leveling ruler to measure the height difference between various reference points and calculate the elevation between two points.

[0027] The lower surface of the adjustment seat 2 is rotatably connected with three support legs. Before measuring, the level 1 installed on the adjustment seat 2 can be supported to a suitable height by the support legs to facilitate the staff to measure.

[0028] A limit assembly for limiting the support leg is installed at the center of the lower surface of the adjustment seat 2. The limit assembly includes a slide rod 7 vertically installed in the center of the adjustment seat 2. An adjustment tube 8 is slidably connected to the slide rod 7. A linkage rod 10 is provided between each support leg and the adjustment tube 8. Both ends of the linkage rod 10 are rotatably connected to the adjustment tube 8 and the support leg respectively. Both ends of the adjustment tube 8 extend outward to form a joint 11. Both ends of the slide rod 7 are rotatably connected to an inner screw ring 13 for connecting with the joint 11 through a fixed tube 12.

[0029] When the supporting legs are in the retracted state, the joint 11 located at the top is embedded in the inner cavity of the inner screw ring 13 located at the top of the sliding rod 7. The user can now rotate the inner screw ring 13 installed at the top of the sliding rod 7 to thread the adjusting tube 8 with the joint 11 located at the top to fix the adjusting tube 8, thereby fixing the three supporting legs through the three linkage rods 10 respectively, preventing the supporting legs from being opened when the user transfers the entire device, thereby preventing the user from moving the measuring device.

[0030] When the user needs to take measurements and put the supporting legs into an unfolded state, the joint 11 located at the bottom is embedded in the inner cavity of the inner screw ring 13 located at the bottom end of the sliding rod 7. At this time, the inner screw ring 13 installed at the bottom end of the sliding rod 7 can be rotated to be threadedly connected with the joint 11 located at the bottom of the adjusting tube 8 to fix the adjusting tube 8, thereby supporting the three supporting legs from the circumferential side through the three linkage rods 10, thereby improving the stability of the supporting legs.

[0031] Reference Figure 1The support leg includes three support tubes 3 with top ends rotatably connected to the adjustment seat 2 through pins, and a support rod 5 is slidably connected in the inner cavity at the bottom end of each support tube 3. The support tube 3 is rotatably connected to the adjustment seat 2, so that the user can open or gather the three support legs by rotating the support tube 3, and the support rod 5 is slidably connected to the bottom end of the support tube 3 to adjust the length of the entire support leg.

[0032] Reference Figure 1 The end of the support rod 5 located outside the support tube 3 is fixedly connected with a support foot, and the bottom end of the support tube 3 is welded with a limit seat 4. The outer wall of the limit seat 4 is provided with a limit bolt 6 screwed with the limit seat 4. One end of the limit bolt 6 located in the inner cavity of the limit seat 4 abuts against the outer surface of the support rod 5. When the user adjusts the bottom end of the support rod 5 to a suitable height, the limit bolt 6 can be screwed into the inner cavity of the limit seat 4, and the support rod 5 is squeezed by the limit bolt 6 to fix the support rod 5 relatively with the limit seat 4, so as to avoid the support rod 5 from shrinking into the inner cavity of the support tube 3 after receiving the pressure.

[0033] Reference Figure 2 and Figure 3 The adjusting tube 8 is a circular tube structure, and earrings 9 are welded on the outer wall of the middle section of the adjusting tube 8 and the side wall of the limiting seat 4 close to the adjusting tube 8. The two ends of the linkage rod 10 are rotatably connected with the limiting seat 4 and the adjusting tube 8 through the earrings 9. The earrings 9 are welded on the outer wall of the adjusting tube 8 and the limiting seat 4, and are used to rotatably connect the two ends of the linkage rod 10 with the adjusting tube 8 and the limiting seat 4 through the earrings 9, so as to support and fix the supporting leg by adjusting the angle between the linkage rod 10 and the sliding rod 7.

[0034] Reference Figure 3 The outer diameter of the connector 11 is equal to the inner diameter of the inner screw ring 13, and an outer thread matching the inner screw ring 13 is provided on the outer surface of the connector 11. The threaded connection mode is adopted, which not only has a stable connection, but also is convenient for users to connect and disassemble the connector 11.

[0035] Reference Figure 1 The bottom of the slide bar 7 is embedded with a laser pen 14 for aligning the level 1 with the reference point. When measuring, the user can turn on the laser pen 14, which generates laser light vertically downward. The user only needs to align the laser point with the reference point and level the level 1 before measuring, which is convenient for the user to align the level 1 with the reference point.

[0036] The implementation principle of the present application is as follows: when the user uses it, he slides the adjusting tube 8 downward along the sliding rod 7. Since the two ends of the linkage rod 10 are rotatably connected to the supporting legs and the adjusting tube 8 respectively, the three supporting legs can be spread out by rotating the linkage rod 10. When the joint 11 at the bottom end of the adjusting tube 8 is moved to the position of the inner screw ring 13 located below, the user rotates the inner screw ring 13 and screws the joint 11 into the inner cavity of the inner screw ring 13 located below, and the supporting legs can be stably supported by the three linkage rods 10, which is convenient for the user to measure. When the user needs to change the reference point for measurement, the user can slide the adjusting tube 8 upward and screw the joint 11 at the top of the adjusting tube 8 into the inner cavity of the inner screw ring 13 located above to fix the adjusting tube 8. At this time, the three linkage rods 10 respectively pull and fix the three supporting legs to prevent the user from spreading the supporting legs when transferring the overall device, which hinders the user from moving the measuring device, and tries to avoid the problem that the existing measuring equipment is inconvenient to operate during the cyclic expansion and storage process, which makes it inconvenient for the user to move the overall device.

[0037] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A leveling device capable of conveniently adjusting the observation distance, comprising a level (1) with an adjustment seat (2) mounted at the bottom, three support legs being rotatably connected to the circumference of the lower surface of the adjustment seat (2), and a limit assembly for limiting the support legs being mounted at the center of the lower surface of the adjustment seat (2), characterized in that: The limit assembly comprises a slide bar (7) vertically mounted at the center of the adjustment seat (2); an adjustment tube (8) is slidably connected to the slide bar (7); a linkage rod (10) is provided between each of the support legs and the adjustment tube (8); both ends of the linkage rod (10) are rotatably connected to the adjustment tube (8) and the support leg, respectively; both ends of the adjustment tube (8) extend outward to form a joint (11); both ends of the slide bar (7) are rotatably connected to an inner screw ring (13) via a fixed tube (12); when the support leg is in a retracted state, the joint (11) located at the top is embedded in the inner cavity of the inner screw ring (13) located at the top end of the slide bar (7); when the support leg is in an extended state, the joint (11) located at the bottom is embedded in the inner cavity of the inner screw ring (13) located at the bottom end of the slide bar (7).

2. A leveling device capable of conveniently adjusting the observation distance according to claim 1, characterized in that: The support leg comprises three support tubes (3) whose top ends are rotatably connected to the adjustment seat (2) via pins, and a support rod (5) is slidably connected to the inner cavity at the bottom end of each support tube (3).

3. A leveling device capable of conveniently adjusting the observation distance according to claim 2, characterized in that: One end of the support rod (5) located outside the support tube (3) is fixedly connected to a support foot, a limit seat (4) is welded to the bottom end of the support tube (3), a limit bolt (6) threadedly connected to the limit seat (4) is passed through the outer wall of the limit seat (4), and one end of the limit bolt (6) located in the inner cavity of the limit seat (4) abuts against the outer surface of the support rod (5).

4. A leveling device capable of conveniently adjusting the observation distance according to claim 3, characterized in that: The adjusting tube (8) is in the form of a circular tube. Earrings (9) are welded to the outer wall of the middle section of the adjusting tube (8) and the side wall of the limiting seat (4) close to the adjusting tube (8). The two ends of the linkage rod (10) are rotatably connected to the limiting seat (4) and the adjusting tube (8) respectively through the earrings (9).

5. A leveling device capable of conveniently adjusting the observation distance according to claim 1, characterized in that: The outer diameter of the joint (11) is equal to the inner diameter of the inner screw ring (13), and an outer surface of the joint (11) is provided with an outer thread that matches the inner screw ring (13).

6. A leveling device capable of conveniently adjusting the observation distance according to claim 1, characterized in that: A laser pen (14) is embedded in the bottom end of the slide bar (7) to facilitate the user to align the level (1) with a reference point.

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