Measurement control point structure suitable for mud influence prevention of low-lying ground
By introducing protection holes and liftable control heads into the measurement control point structure, the problem of difficulty in positioning when cross wires are worn and low-lying is solved, and easy replacement and accurate measurement are achieved.
Patent Information
- Application Number
- CN202421114220.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-21
AI Technical Summary
At construction sites, especially in low-lying ground and mud-covered areas, the cross threads at the measurement control points are prone to wear and are inconvenient to replace after damage, which affects the measurement accuracy, and it is difficult to accurately locate the measurement equipment when the terrain is low-lying.
A measurement control point structure including a protective hole and a liftable control head is designed. Through a threaded control head and a control pier, the protection hole penetrates the upper and lower bearing surfaces of the control head to protect the cross wire, and passes through a tapered tip and arc shape. The guide ribs improve stability and burial reliability, and the control head can be lifted and lowered to adapt to terrain changes.
Effectively prevent cross-wire wear, simplify the replacement process after damage, and ensure measurement accuracy and equipment positioning under low-lying ground or mud coverage.
Smart Images
Figure CN222279760U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of surveying engineering, in particular to a surveying control point structure suitable for preventing mud influence on low-lying ground. Background Art
[0002] During the construction process, surveying is a vital task that helps ensure construction quality and accuracy, and provides reference data for project control and management. Survey control points refer to fixed points used to determine spatial position and positioning in surveying and construction projects. These control points are usually reference points for precise measurement and positioning, and can provide accurate coordinate information.
[0003] Most of the existing measurement control points are protruding spherical structures with crosshairs located on the surface of the sphere. For some permanent control points, protective devices are usually provided. This structure is acceptable. However, for temporary control points arranged on the surface of the construction site, especially for some measurement control points arranged on special surfaces, it is difficult for a large number of instruments to avoid them and the crosshairs are easily worn out when passing through them. In addition, there is often a lot of mud on special construction ground, which will cover the control points. It is often difficult for measurement equipment to accurately locate the crosshairs, thus affecting the measurement accuracy. The above problems need to be solved. Utility Model Content
[0004] The purpose of the utility model is to provide a measurement control point structure suitable for low-lying ground to prevent the influence of mud, and this control point structure utilizes the setting of protection holes to effectively solve the problem of cross wire wear and the inconvenience of replacement after damage; in addition, the setting of a liftable control head solves the problem that the measurement equipment is difficult to accurately position when water or mud accumulates in low-lying terrain.
[0005] In order to realize the above technical features, the purpose of the utility model is achieved as follows: a measurement control point structure suitable for low-lying ground to prevent mud influence, including a control head and a control pier;
[0006] The control head adopts an integrated structure with an externally threaded screw, and the head of the control head is provided with a protective hole and a cross wire;
[0007] The control pier is an integrated base with an internal thread groove. The external thread of the control head matches the internal thread of the control pier, and the control head is connected to the top of the control pier through threads.
[0008] The protection hole is in a cross shape and passes through the upper and lower bearing surfaces of the control head.
[0009] The crosshair is located in the center of the protection hole, and the distance between the crosshair and the upper bearing surface of the control head is fixed.
[0010] The control pier includes a pier column, a wing ring and a pier head. The pier column is provided with a plurality of groups of wing rings, and the pier head is located at the end of the pier column.
[0011] The pier head adopts a conical tip structure, and evenly arranged arc-shaped guide ribs are arranged on the outer wall of the pier head.
[0012] An internal thread groove is processed at the center of the pier column, and the internal thread groove and the external thread of the control head form a thread match.
[0013] The utility model has the following beneficial effects:
[0014] 1. The utility model can effectively solve the problem of cross wire wear by setting the protection hole.
[0015] 2. The utility model can effectively solve the problem of inconvenience in replacing existing measurement control points after they are damaged by setting up a split control head and a control pier.
[0016] 3. The utility model can effectively solve the problem that the measuring equipment is difficult to accurately position when there is water or mud accumulation in low-lying areas through the provision of a liftable control head. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] Figure 1 It is an overall schematic diagram of the utility model.
[0019] Figure 2 It is a front view schematic diagram of the utility model when it is contracted.
[0020] Figure 3 It is a schematic oblique view of the utility model when in use.
[0021] Figure 4 It is an oblique schematic diagram of the control head of the utility model.
[0022] Figure 5 It is a semi-sectional schematic diagram of the utility model when in use.
[0023] In the figure: 1. control head; 2. control pier; 3. mud or accumulated water; 4. rock mass; 11. protection hole; 12. cross wire; 21. pier column; 22. wing ring; 23. pier head; 24. arc-shaped guide rib. DETAILED DESCRIPTION
[0024] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.
[0025] See also Figure 1-5, a measurement control point structure suitable for low-lying ground to prevent mud influence, including a control head 1 and a control pier 2; the control head 1 adopts an integrated structure with an externally threaded screw, and the head of the control head 1 is provided with a protective hole 11 and a cross wire 12; the control pier 2 is an integrated base with an internal thread groove, and the external thread of the control head 1 matches the internal thread of the control pier 2, and the control head 1 is connected to the top of the control pier 2 through a thread. By adopting the above-mentioned control point structure, the setting of the protection hole effectively solves the problem of cross wire wear and the inconvenience of replacement after damage; in addition, the setting of the liftable control head solves the problem of the difficulty of accurately positioning the measuring equipment when water or mud accumulates in low-lying terrain. In the specific use process, the control pier 2 is buried inside the foundation, and then the control head 1 is installed on the top of the control pier 2, thereby completing the installation of the entire control point structure.
[0026] By adopting a split structure for the control head 1 and the control pier 2, it is ensured that the measurement control point can be easily replaced after being damaged.
[0027] Furthermore, the protection hole 11 is cross-shaped, and the protection hole 11 passes through the upper and lower bearing surfaces of the control head 1. The cross wire 12 is in the middle of the protection hole 11, and the distance between the cross wire 12 and the upper bearing surface of the control head 1 is fixed. The setting of the protection hole 11 can effectively solve the wear problem of the cross wire 12, and the through-type setting of the protection hole can accelerate the loss of surface water on the control head 1.
[0028] Furthermore, the control pier 2 includes a pier column 21, a wing ring 22 and a pier head 23. The pier column 21 is provided with multiple groups of wing rings 22, and the pier head 23 is located at the end of the pier column 21. The wing ring 22 and the willow leaf 24 can increase the stability of the control pier 2.
[0029] Furthermore, the pier head 23 adopts a conical tip structure, and evenly arranged arc-shaped guide ribs 24 are provided on the outer wall of the pier head 23. The conical tip structure ensures that the control pier 2 can be conveniently buried in the foundation later, and the reliability of the burial is guaranteed.
[0030] Furthermore, the center of the pier 21 is processed with an internal thread groove, which forms a thread match with the external thread of the control head 1. Through the above thread match structure, it is ensured that the setting of the liftable control head 1 can effectively solve the problem that the measurement equipment is difficult to accurately position when there is water or mud on the low-lying ground.
[0031] In the utility model, the working steps of the device are as follows:
[0032] Clear the debris on the ground and bury the control pier 2. Use a cross screwdriver to install the control head 1 and make the lower surface of the control head 1 coincide with the notch of the control pier 2, and the upper surface of the control head 1 coincide with the ground surface. The measurement control point enters the standby state. In this state, the cross wire 12 is located inside the protection hole 11, which can effectively reduce the wear of the cross wire 12 by personnel or equipment. When in use, use a cross screwdriver to unscrew the control head 1 to a suitable position, clean the excess mud on the surface, and install the measurement equipment for measurement.
Claims
1. A measurement control point structure suitable for preventing mud from affecting low-lying ground, characterized in that: It comprises a control head (1) and a control pier (2); The control head (1) adopts an integrated structure with an externally threaded screw, and the head of the control head (1) is provided with a protective hole (11) and a cross wire (12); The control pier (2) is an integrated base with an internal thread groove, the external thread of the control head (1) matches the internal thread of the control pier (2), and the control head (1) is connected to the top of the control pier (2) through threads.
2. According to claim 1, a measurement control point structure suitable for preventing mud from affecting low-lying ground, characterized in that: The protection hole (11) is cross-shaped, and the protection hole (11) passes through the upper and lower bearing surfaces of the control head (1).
3. According to claim 2, a measurement control point structure suitable for preventing mud from affecting low-lying ground, characterized in that: The crosshair (12) is located in the middle of the protection hole (11), and the crosshair (12) is at a fixed distance from the upper bearing surface of the control head (1).
4. According to claim 1, a measurement control point structure suitable for preventing mud from affecting low-lying ground, characterized in that: The control pier (2) comprises a pier column (21), a wing ring (22) and a pier head (23); a plurality of groups of wing rings (22) are arranged on the pier column (21); and the pier head (23) is located at the end of the pier column (21).
5. A measurement control point structure suitable for preventing mud from affecting low-lying ground according to claim 4, characterized in that: The pier head (23) adopts a conical tip structure, and evenly arranged arc-shaped guide ribs (24) are provided on the outer wall of the pier head (23).
6. A measurement control point structure suitable for preventing mud impact on low-lying ground according to claim 4, characterized in that: An internal thread groove is processed at the center of the pier column (21), and the internal thread groove and the external thread of the control head (1) form a thread match.