Prism bar for river-crossing leveling by ranging triangulation elevation method

Abstract

The utility model particularly discloses a prism bar for river-crossing leveling by a ranging triangulation elevation method, which comprises a main bar, and a vertical line and a transverse line are arranged on the side wall of the main bar. Wherein the vertical lines are vertically distributed in the height direction of the main rod, the four vertical lines penetrate through the whole height of the main rod, the transverse lines are arranged on the waist portion of the main rod, the height of the transverse lines is 1.0 m, the height of the transverse lines is 2.0 m, and the transverse lines are used for indicating length inspection of the main rod. And an external circular level is also arranged on the outer wall of the main rod. The centering rod support is suitable for ranging triangulated elevation method river-crossing leveling, the centering rod support commonly used for measurement is erected on river-crossing points on the two banks, the prism connected and installed on the top can be consistent with the vertical position of the river-crossing points, and total station aiming prisms on the same bank and opposite banks for river-crossing leveling can conduct corner measurement at the same time, so that the height difference of the two banks is calculated.

Description

Technical Field

[0001] This utility model belongs to the field of measurement technology, specifically relating to a prism rod for cross-river leveling using the distance-measuring trigonometric leveling method. Background Technology

[0002] Distance-based trigonometric leveling is a suitable method for long-distance leveling across rivers, especially when the line of sight exceeds 100 meters. This method combines trigonometric leveling with modern surveying techniques. The observation method is simple and less restricted by terrain conditions, making it relatively easy to use trigonometric leveling for elevation transfer in hilly and mountainous areas.

[0003] The distance-measuring trigonometric leveling method for cross-river leveling mainly involves determining the height of instruments on the same bank and observing the vertical angle on the opposite bank. Both of these involve observing target prisms on both banks. The target prisms are generally fixed at a designated height on a linear invar leveling rod using clamps, similar to the wings of a hat.

[0004] The prisms on both sides of the river are fixed by different observers, resulting in differences in height; in different setup scenarios, the direction of the scales on both sides facing the opposite bank is not completely consistent, resulting in different positions of the prism centers; the prism at the cap wing position is not vertically concentric with the crossing point, resulting in different positions of the side-measuring and angle-measuring prisms. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a prism rod for cross-river leveling using the distance-measuring trigonometric leveling method, which ensures vertical concentricity between the prism and the cross-river point, is easy to operate, and has strong versatility.

[0006] The main rod of this invention is indicated by an external circular level and erected by a centering support assembly; the connecting parts are common connecting parts for measuring prisms, facilitating prism installation; the external circular level is a commonly used circular level for measurement, making it easy to fix and use. Furthermore, this prism rod is inexpensive to manufacture, has a simple structure, and is easy to use and operate.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A prism rod for cross-river leveling using the distance-measuring trigonometric leveling method includes:

[0009] The main pole has vertical and horizontal lines on its side walls;

[0010] The connector is located at the center of the main rod and has a prism on it;

[0011] An external circular level is fixed to one side of the main rod with screws.

[0012] In one preferred embodiment, four vertical lines are provided, distributed on the four central axes of the main pole, and the four vertical lines are at the same height as the main pole.

[0013] In some implementations, preferably, two horizontal lines are provided, with the two horizontal lines located at heights of 1.0m and 2.0m on the main pole, respectively.

[0014] In some implementations, the external circular level is preferably located at a height of 1.5m from the main pole.

[0015] In a preferred embodiment, the system further includes a centering support assembly, which includes a U-shaped seat. A notch is provided on one side wall of the U-shaped seat, and a locking rod is provided on the inner end face of the side wall. The locking rod has a locking hole, and the side wall of the main rod has an installation groove communicating with the notch. A lock is provided in the installation groove, and the locking rod is fixed by the lock.

[0016] In a preferred embodiment, the lock includes a mounting plate whose dimensions are consistent with the inner dimensions of the mounting groove. A hinge post is provided on the mounting plate, and a horizontally placed S-shaped block is hinged to the hinge post. A compression block A is provided at one end of a bend in the S-shaped block. A compression spring A is provided between the compression block and the mounting plate. Both ends of the compression spring A are fixedly connected to the mounting plate and the compression block A, respectively, and an L-shaped guide rod is provided at its other end. A compression block B is provided at one end of the other bend in the positioning post. A compression spring B is provided between the compression block B and the mounting plate. Both ends of the compression spring B are fixedly connected to the mounting plate and the compression block B, respectively, and its other end is a free end.

[0017] In a preferred embodiment, the L-shaped guide rod has a movable hole on its body, a positioning post is provided in the movable hole, and a relief groove is provided at both ends of the positioning post. A T-shaped magnetic block is provided in the relief groove, and a baffle is fixed on the outer wall of the relief groove. The baffle has a through hole for a horizontal rod that can pass through the T-shaped block.

[0018] In some embodiments, preferably, positioning grooves are provided on the upper and lower inner walls of the mounting groove, and a round magnetic block that attracts the T-shaped magnetic block is provided in the positioning groove.

[0019] In some embodiments, preferably, the mounting plate is provided with threaded holes, and screws are provided on the opposite side of the mounting groove on the main rod. The screws pass through the main rod, enter the mounting groove, and are fixed to the threaded holes on the mounting plate.

[0020] In a preferred embodiment, a hinge block is provided on the side wall of the U-shaped rod, the support leg is connected to the hinge block, the bottom of the support leg is ball-hinged with a support, the support is provided with a fixing hole, and a nail is provided in the fixing hole.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] 1) The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method designed in this utility model can be indicated by an external circular level and erected using a centering support assembly; the connector is a common connector for measuring prisms, facilitating prism installation; the external circular level is a commonly used circular level for measurement, making it easy to fix and use. Furthermore, this prism rod has low manufacturing cost, simple structure, and is easy to use and operate.

[0023] 2) In this utility model, each of the four sides of the main pole has a vertical line in the center. The vertical lines can be used to check the external circular level, which ensures the verticality of the main pole. There are also two horizontal lines at heights of 1.0m and 2.0m on the main pole, used for indicating the length of the main pole.

[0024] 3) The centering support component of this utility model includes a U-shaped seat. The U-shaped seat and the main rod are automatically locked by a lock and a locking rod. The lock includes a mounting plate, and a hinge column is also provided on the mounting plate. A horizontally placed S-shaped block is hinged on the hinge column. A pressing block A is provided at one end of a bend on the S-shaped block. A compression spring A is provided between the pressing block and the mounting plate. The two ends of the compression spring A are fixedly connected to the mounting plate and the pressing block A, respectively. An L-shaped guide rod is provided at the other end. A movable hole is provided on the body of the L-shaped guide rod. A positioning column is provided in the movable hole. Both ends of the positioning column are provided with clearance grooves. A T-shaped magnetic block is provided in the clearance groove. A baffle is fixed on the outer wall of the clearance groove. A through hole is provided on the baffle for the horizontal rod of the T-shaped block to pass through. A pressing block B is provided at one end of the other bend of the positioning column. A compression spring B is provided between the pressing block B and the mounting plate. The two ends of the compression spring B are fixedly connected to the mounting plate and the pressing block B, respectively. The other end is a free end. By pressing the S-block with the locking rod, causing it to rotate clockwise around the hinge post, the bent part of the S-block can be locked into the lock hole. Installation and disassembly are both convenient; the centering support assembly can be used in conjunction with the main rod, or the main rod can be used independently, offering high flexibility. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the prism rod in Example 1;

[0027] Figure 2 This is a connection diagram of the connector and the prism in Example 1;

[0028] Figure 3 This is an installation diagram of the external circular level in Example 1;

[0029] Figure 4 This is a schematic diagram of the prism rod in Example 2;

[0030] Figure 5 This is a schematic diagram of the U-shaped seat in Example 2;

[0031] Figure 6 for Figure 4 A cross-sectional view along the AA direction;

[0032] Figure 7 for Figure 6 Enlarged view of section B;

[0033] Figure 8 This is a cross-sectional view of the positioning post in Example 2.

[0034] The components are as follows: 1. Main rod; 2. Connector; 3. Vertical line; 4. Horizontal line; 5. Screw; 6. External circular level; 7. U-shaped seat; 701. Notch; 702. Locking rod; 703. Locking hole; 8. Mounting plate; 9. Hinge column; 10. S-shaped block; 11. Extrusion block B; 12. L-shaped guide rod; 13. Movable hole; 14. Positioning column; 15. Extrusion block A; 16. Compression spring A; 17. Compression spring B; 18. T-shaped magnetic block; 19. Support leg; 20. Support. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] Example 1

[0038] The distance-measuring trigonometric leveling method for cross-river leveling mainly involves determining the height of instruments on the same bank and observing the vertical angle on the opposite bank. Both of these involve observing target prisms on both banks. The prisms on both banks are fixed by different observers, leading to height differences; in different setup scenarios, the direction of the leveling rods facing the opposite bank is not entirely consistent, resulting in different prism center positions; and the prisms at the cap wing position are not vertically concentric with the crossing point, causing differences in the positions of the side-measuring and angle-measuring prisms.

[0039] Based on this, this embodiment specifically provides a prism rod for cross-river leveling using the distance trigonometric leveling method, including a main rod 1. The horizontal cross-section of the main rod 1 is a rectangular surface with rounded corners at its four corners. A connector 2 is provided at its top, and a prism is provided on the connector 2.

[0040] In the above, the main rod 1 is a square prism with a flat bottom, each side having a length of 0.04m and rounded corners into quarter circles with a radius of 0.01m; its height is 2.5m.

[0041] Connector 2 is a universal connector for measuring prisms, facilitating prism installation. In this embodiment, connector 2 is located at the center of the main rod 1, ensuring that the center of the connected prism and the river crossing point are vertically aligned.

[0042] Vertical lines 3 and horizontal lines 4 are provided on the side wall of the main pole 1. The vertical lines 3 are distributed vertically along its height, with one line at the center of each of the four sides of the main pole 1. These four vertical lines 3 run the entire length of the main pole 1 and can be used to check the external circular level 6, which ensures the verticality of the main pole 1. In this embodiment, horizontal lines 4 are located at the waist of the main pole 1, with one line at heights of 1.0m and 2.0m, used for indicating the length of the main pole 1. Both horizontal lines 4 are arranged in a circle around the outer wall of the main pole 1, indicating that the two prism rods are at the same height.

[0043] An external circular level 6 is also installed on the outer wall of the main rod 1. Specifically, the external circular level 6 is fixed to one side of the main rod 1 by screws 5, and the external circular level 6 ensures the vertical position of the main rod 1. The length of the screw 5 is 0.014m, and the other parameters are consistent with the specifications of a metric M4 screw.

[0044] Specifically, a screw hole 5 with a depth of 0.015m is provided on the side wall of the main rod 1. The diameter and pitch of the screw hole are consistent with the specifications of a metric M4 nut. One end of the screw 5 passes through the external circular level 6 and is threaded into the screw hole. The external circular level 6 is located at a height of 1.5m on the main rod 1.

[0045] In practical use, the prism pole for cross-river leveling using the distance-measuring trigonometric leveling method provided by this invention is erected at the crossing point using a commonly used centering rod support, and then cross-river leveling is carried out. The prism pole for cross-river leveling using the distance-measuring trigonometric leveling method provided by this invention has low manufacturing cost, simple structure, and is easy to use and operate.

[0046] The vertical line 3 can be used to check the external circular level 6, and the horizontal line 4 can be used to check the length of the main rod 1.

[0047] Example 2

[0048] This embodiment optimizes the centering structure of the main rod 1 based on embodiment 1. The prism rod also includes a centering support assembly, which includes a U-shaped seat 7. The U-shaped seat 7 is located at a height of 1.2m on the main rod 1. A notch 701 is provided on one side wall of the U-shaped seat 7, and a locking rod 702 is provided on the inner end face of the current side wall. A locking hole 703 is provided on the locking rod 702.

[0049] Preferably, there are two notches 701, and the two notches 701 are located on the end wall of the U-shaped seat 7. At the same time, there are also two locking rods 702, which are located on the same vertical line and on the same surface as the notches 701.

[0050] There are two mounting slots on the side wall of the main rod 1, and both of them are connected to two notches 701. A lock is installed in the mounting slot. The lock is used to fix the locking rod 702, thereby fixing the U-shaped seat 7 on the main rod 1. A hinge block is installed on the side wall of the U-shaped rod. The support leg is connected to the hinge block. The bottom of the support leg is ball-hinged with a support 20. The support 20 is provided with a fixing hole and a nail is installed in the fixing hole.

[0051] In this embodiment, three support legs are provided. The three support legs are respectively hinged to the three side walls of the U-shaped seat 7. After the three support legs are spread out, the main rod 1 can be centered and supported. In this embodiment, a level is used to adjust the verticality of the main rod 1, and a centering support assembly is used to assist in centering and supporting it.

[0052] The lock includes a mounting plate 8, the size of which is the same as the inner size of the mounting groove. The mounting plate 8 is provided with threaded holes. Screws are provided on the opposite side of the mounting groove on the main rod 1. The screws pass through the main rod 1, enter the mounting groove, and are fixed to the threaded holes on the mounting plate 8.

[0053] A hinge post 9 is provided on the mounting plate 8. A horizontally placed S-shaped block 10 is hinged to the hinge post 9. A pressing block A15 is provided at one end of a bend in the S-shaped block 10. A compression spring A16 is provided between the pressing block and the mounting plate 8. The two ends of the compression spring A16 are fixedly connected to the mounting plate 8 and the pressing block A15, respectively. An L-shaped guide rod 12 is provided at the other end of the compression spring A16. A movable hole 13 is provided on the body of the L-shaped guide rod 12. A positioning post 14 is provided in the movable hole 13. Both ends of the positioning post 14 are provided with clearance grooves. A T-shaped magnetic block 18 is provided in the clearance groove. A baffle is fixed on the outer wall of the clearance groove. A through hole is provided on the baffle to allow the horizontal rod of the T-shaped block to pass through. A pressing block B11 is provided at one end of the other bend in the positioning post 14. A compression spring B17 is provided between the pressing block B11 and the mounting plate 8. The two ends of the compression spring B17 are fixedly connected to the mounting plate 8 and the pressing block B11, respectively. The other end of the compression spring B17 is a free end.

[0054] After assembling the above-mentioned lock mounting structure, move it along the mounting groove into the mounting groove and fix the mounting plate 8 with screws. At the same time, positioning grooves are set on the upper and lower inner walls of the mounting groove, and round magnetic blocks are set in the positioning grooves. After the L-shaped guide rod 12 moves into the mounting groove, use tweezers, screwdrivers or metal wire to move the positioning post 14 so that the positioning post 14 is aligned with the positioning groove. Then the round magnetic block and the T-shaped magnetic block 18 are attracted. The T-shaped magnetic block 18 moves into the positioning groove, and the L-shaped guide rod 12 can slide left and right along the positioning post 14, squeezing the S-shaped block 10 to rotate around the hinge post 9.

[0055] When the U-shaped seat 7 moves horizontally towards the main rod 1, the locking rod 702 is inserted into the mounting groove. First, the S-shaped block 10 is pressed to rotate clockwise, and the locking rod 702 continues to extend. However, after the bent part of the S-shaped block 10 contacts the lock hole 703, it returns to its original position under the action of the compression spring A16, and the bent part is locked into the lock hole 703. The S-shaped block 10 then fixes the current locking rod 702, thus achieving horizontal and vertical locking of the U-shaped seat 7 and effective connection between the U-shaped seat 7 and the main rod 1. When it is necessary to disassemble the U-shaped seat 7, the L-shaped guide rod 12 is pressed along the notch 701 to separate the S-shaped block 10 from the locking rod 702. Pulling the U-shaped seat 7 backward will then remove it.

[0056] Working principle:

[0057] Technicians can assemble the main rod 1, prism, and external circular level 6 at the measurement site. Then, the main rod 1 is inserted into the U-shaped seat 7 to achieve self-locking between the U-shaped seat 7 and the main rod 1. The support legs are spread to help center the main rod 1, and the external circular level 6 is used to ensure the main rod 1 is vertical. Then, the support 20 at the bottom of the support legs is nailed to the ground, and the prism rod is erected at the river crossing point to carry out the river crossing level measurement.

[0058] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any simple modifications, alterations, and equivalent changes made to the above embodiments based on the technical essence of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A prism rod for cross-river leveling using the distance-measuring trigonometric leveling method, characterized in that, include: The main pole has vertical and horizontal lines on its side walls; The connector is located at the center of the main rod and has a prism on it; An external circular level is fixed to one side of the main rod with screws.

2. The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method according to claim 1, characterized in that, There are four vertical lines, which are distributed on the four central axes of the main pole, and the four vertical lines are at the same height as the main pole.

3. The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method according to claim 1, characterized in that, There are two horizontal lines, located at heights of 1.0m and 2.0m on the main pole, respectively.

4. The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method according to claim 1, characterized in that, The external circular level is located at a height of 1.5m from the main pole.

5. The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method according to claim 1, characterized in that, It also includes a centering support component, which includes a U-shaped seat. A notch is provided on one side wall of the U-shaped seat, and a locking rod is provided on the inner end face of the side wall. The locking rod is provided with a locking hole. The side wall of the main rod is provided with a mounting groove that communicates with the notch. A lock is provided in the mounting groove, and the locking rod is fixed by the lock.

6. The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method according to claim 5, characterized in that, The lock includes a mounting plate, the size of which is the same as the size of the mounting groove. A hinge post is provided on the mounting plate, and a horizontally placed S-shaped block is hinged to the hinge post. A compression block A is provided at one end of a bend on the S-shaped block. A compression spring A is provided between the compression block and the mounting plate. Both ends of the compression spring A are fixedly connected to the mounting plate and the compression block A, respectively, and an L-shaped guide rod is provided at its other end. A compression block B is provided at one end of the other bend of the positioning post. A compression spring B is provided between the compression block B and the mounting plate. Both ends of the compression spring B are fixedly connected to the mounting plate and the compression block B, respectively, and its other end is a free end.

7. The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method according to claim 6, characterized in that, The L-shaped guide rod has a movable hole on its body, a positioning post inside the movable hole, a relief groove at each end of the positioning post, a T-shaped magnetic block inside the relief groove, and a baffle fixed on the outer wall of the relief groove. The baffle has a through hole for a horizontal rod that can pass through the T-shaped block.

8. The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method according to claim 7, characterized in that, Positioning grooves are provided on the upper and lower inner walls of the mounting groove, and round magnetic blocks that attract the T-shaped magnetic blocks are placed in the positioning grooves.

9. The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method according to claim 6, characterized in that, The mounting plate has threaded holes, and screws are provided on the opposite side of the mounting groove on the main rod. The screws pass through the main rod, enter the mounting groove, and are fixed to the threaded holes on the mounting plate.

10. The prism rod for cross-river leveling using the distance-measuring trigonometric leveling method according to claim 5, characterized in that, A hinge block is provided on the side wall of the U-shaped rod. The support leg is connected to the hinge block. The bottom of the support leg is ball-jointed with a support. The support has a fixing hole and a nail is installed in the fixing hole.

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