Prism placing support for engineering surveying and mapping

Abstract

The prism placing support for engineering surveying and mapping comprises a tripod, a leveling rod and a prism, the tripod comprises a tripod head and supporting legs, a spherical shell is arranged in the center of the tripod head and comprises an upper spherical shell body and a lower spherical shell body, hemispherical cavities are formed in the upper spherical shell body and the lower spherical shell body, and a spherical cavity is formed by the upper spherical shell body and the lower spherical shell body. Through holes are formed in the top of the upper spherical shell and the bottom of the lower spherical shell, a steel ball is fixedly arranged in the leveling rod, the steel ball is arranged in the spherical cavity, the leveling rod penetrates out of the through holes in the upper portion and the lower portion of the spherical shell respectively, a laser transmitter is arranged at the bottom of the leveling rod, and the laser transmitter is installed in the center of the leveling rod and located on the outer side of the laser transmitter. The convex ring fixedly mounted on the outer side of the leveling rod is arranged, and the detachable heavy block, the heavy block, the steel ball and the spherical shell are arranged on the convex ring, so that the adjusting rod automatically reaches a vertical state under the action of gravity, the prism is automatically and quickly leveled, and the surveying and mapping working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of engineering surveying and mapping equipment, in particular to a prism placement bracket for engineering surveying and mapping. Background Art

[0002] In the process of engineering surveying and mapping, prisms are needed for surveying and mapping. The measurement accuracy depends not only on the machine accuracy, but also on whether the prism is vertical. It is necessary to ensure that the laser beam maintains a stable path during the reflection process and reduce the measurement error caused by the tilt of the prism. When the prism is leveled, the reflected laser beam can more accurately represent the position of the target point, thereby improving the measurement accuracy and reliability.

[0003] At present, prisms used in engineering surveying and mapping need to be leveled manually. It is difficult to level them in windy places due to the influence of the on-site environment. It is time-consuming and laborious. Moreover, after leveling, the bracket is easily shaken by the influence of wind. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the utility model provides a prism placement bracket for engineering surveying and mapping, comprising a tripod, a leveling rod installed in the tripod and a prism installed on the leveling rod, the tripod is an adjustable tripod, comprising a frame head and legs, the legs are hinged at the bottom of the frame head, a spherical shell is arranged at the center of the frame head, the spherical shell comprises an upper spherical shell and a lower spherical shell, the upper spherical shell is buckled on the lower shell, a hemispherical cavity is arranged in the upper spherical shell and the lower spherical shell, and a spherical cavity is formed together, through holes are arranged at the top of the upper spherical shell and the bottom of the lower spherical shell, a steel ball is fixedly arranged in the leveling rod, the steel ball is placed in the spherical cavity, and is slightly smaller than the inner diameter of the spherical shell, the leveling rod passes through the upper and lower through holes of the spherical shell respectively, a laser emitter is arranged at the bottom center of the leveling rod, a convex ring fixedly installed on the outside of the leveling rod is arranged on the outside of the laser emitter, a detachable weight is arranged on the convex ring, and a locking device is arranged on the frame head.

[0005] Specifically, the gap between the steel ball and the ball shell is coated with lubricating oil.

[0006] Specifically, the locking device includes a support seat and a fastening bolt. The support seat is in pieces and is evenly arranged on the frame head. A threaded hole is provided in the support seat. The fastening screw is threadedly connected in the support seat. A handle is provided at one end of the fastening screw, and the other end of the fastening screw is arc-shaped and abuts against the side wall of the leveling rod.

[0007] Specifically, the legs are hinged at the bottom of the frame head, and include an inner leg and an outer leg. The inner leg is sleeved in the inner leg, and a fastener is arranged on the outer side of the outer leg.

[0008] Specifically, the weight block is formed by two half-axle sleeves through bolts, and the weight of the weight block is 1KG-2KG.

[0009] Specifically, a level is fixedly installed on the side wall of the leveling rod.

[0010] Specifically, the lower spherical shell is welded to the bottom of the frame head, and the upper spherical shell is fixedly mounted on the frame head by bolts.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model adopts a weight block, a steel ball and a ball shell, so that the adjustment rod automatically reaches a vertical state under the action of gravity, realizes automatic and rapid leveling of the prism, and improves the efficiency of surveying and mapping work.

[0013] 2. The utility model provides a locking device on the frame head to prevent the leveling rod from shaking under the action of wind after leveling, thereby reducing measurement errors and improving the accuracy and reliability of surveying and mapping work. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 A top view of the utility model

[0017] 1. Tripod; 11. Tripod head; 12. Inner legs; 13. Outer legs; 14. Fasteners; 15. Upper ball shell; 16. Lower ball shell; 17. Support seat; 18. Fastening screw; 19. Handle; 2. Leveling rod; 21. Steel ball; 22. Weight block; 23. Convex ring; 24. Laser transmitter; 25. Level; 3. Prism. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-Figure 3 As shown, a prism 3 placement bracket for engineering surveying and mapping includes a tripod 1, a leveling rod 2 installed in the tripod 1, and a prism 3 installed on the leveling rod 2.

[0020] The tripod 1 is an adjustable tripod 1, including a head 11 and legs. The legs are hinged at the bottom of the head 11 and can be stretched to a certain angle and supported on the ground. The legs include an inner leg 12 and an outer leg 13. The inner leg 12 is sleeved in the inner leg 12. A fastener 14 is provided on the outer side of the outer leg 13. The inner leg 12 is locked by rotating the fastener 14, and the extension distance of the inner leg 12 can be adjusted according to measurement requirements.

[0021] A spherical shell is provided at the center of the head 11 of the tripod 1. The spherical shell is provided in the middle of the head 11 and includes an upper spherical shell 15 and a lower spherical shell 16. The lower spherical shell 16 is welded to the bottom of the head 11. The upper spherical shell 15 is fixedly mounted on the head 11 by bolts and snapped onto the lower shell body. Both the upper spherical shell 15 and the lower spherical shell 16 are provided with hemispherical cavities to form a spherical cavity together. Through holes are provided at the top of the upper spherical shell 15 and the bottom of the lower spherical shell 16. The leveling rod 2 passes through the through holes of the spherical shell. A steel ball 21 is fixedly provided in the leveling rod 2 and placed in the spherical cavity. The radius of the steel ball 21 is the bracket for placing the prism 3 for engineering surveying and mapping, the inner diameter of the spherical shell, and the leveling rod 2 pass through the through holes above and below the spherical shell, respectively. The aperture of the through hole of the upper spherical shell 15 and the lower spherical shell 16 is larger than the aperture of the leveling rod 2, and smaller than the aperture of the steel ball 21, so that the position of the steel ball 21 is limited in the cavity of the spherical shell. Lubricating oil is applied to the gap between the spherical shell and the steel ball 21 to reduce the friction between the spherical shell and the steel ball 21. The steel ball 21 can rotate in the spherical shell in the vertical direction to flexibly adjust the orientation of the prism 3.

[0022] At the bottom of the leveling rod 2, a laser emitter 24 is provided. The laser emitter 24 is installed at the center of the leveling rod 2 and emits laser vertically to the ground for positioning. On the outside of the laser emitter 24, a convex ring 23 is fixedly installed on the outside of the leveling rod 2. A detachable weight 22 is provided on the convex ring 23. The weight of the weight 22 is 1KG-2KG. The weight 22 is installed on the outside of the leveling rod 2 by two half-axle sleeves through bolts. The convex ring 23 supports the weight 22 at the bottom of the weight 22 to prevent the weight 22 from falling off. The weight 22, the prism 3, and the steel ball 21 are coaxially arranged. Under the cooperation of the weight 22, the steel ball 21 and the ball shell, the adjustment rod automatically reaches a vertical state under the action of gravity, realizing the automatic leveling of the prism 3. On the side wall of the leveling rod 2, a level 25 is fixedly installed. By observing whether the bubble is in the center of the level 25, it can be detected whether the prism 3 is leveled.

[0023] In order to prevent the leveling rod 2 from shaking under the action of wind after leveling, a locking device is provided on the frame head 11. The locking device is a support seat 17 and a fastening screw 18. Three support seats 17 are fixedly installed on the side wall of the frame head 11 and are evenly arranged on the frame head 11. A threaded hole is provided in the support seat 17. The fastening screw 18 is threadedly connected in the support seat 17. A handle 19 is provided at one end of the fastening screw 18. The other end of the fastening screw 18 is arc-shaped and abuts against the side wall of the leveling rod 2. When the leveling rod 2 is automatically leveled under the action of gravity, the handle 19 is rotated to make the ends of the three fastening screws 18 abut against the side wall of the leveling rod 2, clamp and fix the position of the leveling rod 2, limit the leveling rod 2, reduce measurement errors, and improve the accuracy and reliability of surveying and mapping work.

[0024] When in use, mark the measuring point on the ground, turn on the laser transmitter 24, and with the help of the laser, place the bracket above the measuring point, open the bracket and adjust the bracket height, and set the leveling rod 2 vertically under the action of gravity to achieve rapid automatic leveling of the prism 3. Observe the level 25, and when the leveling rod 2 is in a horizontal position, the fastening screw 18 is sequentially abutted against the side wall of the leveling rod 2, and then the fastening screw 18 is tightened to fix the horizontal position of the leveling rod 2.

[0025] The above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A prism placement bracket for engineering surveying and mapping, comprising a tripod (1), a leveling rod (2) installed in the tripod (1), and a prism (3) installed on the leveling rod (2), characterized in that: The tripod (1) is an adjustable tripod (1), comprising a head (11) and legs, the legs being hinged at the bottom of the head (11), a spherical shell being arranged at the center of the head (11), the spherical shell comprising an upper spherical shell (15) and a lower spherical shell (16), the upper spherical shell (15) being buckled on the lower shell, a hemispherical cavity being arranged in the upper spherical shell (15) and the lower spherical shell (16), and forming a spherical cavity together, a through hole being arranged at the top of the upper spherical shell (15) and the bottom of the lower spherical shell (16), and a through hole being arranged at the leveling rod (2 ) is fixedly provided with a steel ball (21), which is placed in a spherical cavity and is slightly smaller than the inner diameter of the spherical shell. The leveling rod (2) passes through the upper and lower through holes of the spherical shell respectively. A laser emitter (24) is provided at the bottom center of the leveling rod (2). On the outer side of the laser emitter (24), a convex ring (23) fixedly installed on the outer side of the leveling rod (2) is provided. A detachable weight block (22) is provided on the convex ring (23). A locking device is provided on the frame head (11). The leveling rod (2) is automatically leveled under the action of gravity.

2. The prism placement bracket for engineering surveying and mapping according to claim 1 is characterized in that: The gap between the steel ball (21) and the ball shell is coated with lubricating oil.

3. The prism placement bracket for engineering surveying and mapping according to claim 1 is characterized in that: The locking device comprises a support seat (17) and a fastening screw (18). There are three support seats (17) which are evenly arranged on the frame head (11). A threaded hole is provided in the support seat (17). The fastening screw (18) is threadedly connected in the support seat (17). A handle (19) is provided at one end of the fastening screw (18). The other end of the fastening screw (18) is arc-shaped and abuts against the side wall of the leveling rod (2).

4. The prism placement bracket for engineering surveying and mapping according to claim 1 is characterized in that: The supporting legs are hinged at the bottom of the frame head (11), and include an inner supporting leg (12) and an outer supporting leg (13). The inner supporting leg (12) is sleeved in the inner supporting leg (13), and a fastener (14) is arranged on the outside of the outer supporting leg (13).

5. The prism placement bracket for engineering surveying and mapping according to claim 1, characterized in that: The weight block (22) is formed by two half-axle sleeves through bolts, and the weight of the weight block (22) is 1KG-2KG.

6. The prism placement bracket for engineering surveying and mapping according to claim 1, characterized in that: A level gauge (25) is fixedly mounted on the side wall of the leveling rod (2).

7. The prism placement bracket for engineering surveying and mapping according to claim 1, characterized in that: The lower spherical shell (16) is welded to the bottom of the frame head (11), and the upper spherical shell (15) is fixedly mounted on the frame head (11) by means of bolts.

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