Pit mouth positioning mechanism
By setting an annular positioning plate on the outside of the pithead positioning ring and fixing it with a positioning pin, the problem of positional displacement of the pithead positioning ring during the inspection process was solved, achieving higher inspection accuracy and data accuracy, and ensuring project quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-03-27
AI Technical Summary
In airport earthwork construction, conventional pithead positioning rings lack an effective fixing method, which leads to positional displacement during the testing process, affecting testing accuracy and data accuracy.
A pithead positioning mechanism is adopted, including a pithead positioning ring, an annular positioning plate, and a positioning pin. The annular positioning plate is fixed to the ground by the positioning pin to ensure the stability of the pithead positioning ring.
This improves the precision of testing and the accuracy of data, ensuring the validity of test data and meeting the specifications for project acceptance.
Smart Images
Figure CN224051327U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to airport earthwork filling technical field, concretely relates to a pit mouth positioning mechanism. BACKGROUND
[0002] In the airport earthwork construction process, the conventional water injection method detection steps are, selecting test points - ground leveling - selecting the diameter and depth of excavation according to the filling particle - placing the pit mouth positioning ring - laying plastic film, water injection to the top of pit mouth positioning ring - measuring the water injection amount in pit mouth positioning ring - taking out the plastic film and water in pit mouth positioning ring, excavating to the design requirement depth in pit mouth positioning ring, weighing the removed soil sample - trimming the pit wall and pit bottom, laying plastic film in the pit, water injection to the top of pit mouth positioning ring, measuring the water injection volume - measuring the solid volume rate according to the test procedure, backfilling the test pit.
[0003] In the whole test process, the pit mouth positioning ring needs to be kept in a fixed state all the time, but the conventional pit mouth positioning ring is a single ring, and there is no effective fixing way, so the artificial foot stepping method is often used for fixing in the detection process, which cannot effectively ensure that the pit mouth positioning ring does not move in the whole test process, especially when the test pit is excavated, the disturbance to the pit mouth positioning ring and the continuous adjustment of the position of the fixing personnel will have a great influence on the position of the pit mouth positioning ring, thereby affecting the precision of the test detection, and further unable to ensure the accuracy and effectiveness of the detection data, and unable to ensure that the test pit size meets the specification requirements. UTILITARIAN CONTENT
[0004] The utility model aims at providing a pit mouth positioning mechanism to solve the above-mentioned technical problems.
[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a pit mouth positioning mechanism, comprising a pit mouth positioning ring, an annular positioning plate and a positioning pin, the annular positioning plate is fixedly sleeved at the bottom of the outer side wall of the pit mouth positioning ring, the annular positioning plate is provided with a positioning hole, and the positioning pin passes through the positioning hole to fix the annular positioning plate on the ground.
[0006] Preferably, the annular positioning plate is fixedly welded and sleeved at the bottom of the outer side wall of the pit mouth positioning ring.
[0007] Preferably, the ring width of the annular positioning plate is more than 5 times the ring width of the pit mouth positioning ring.
[0008] Preferably, the positioning hole is a plurality of, and the plurality of positioning holes are evenly arranged on the annular positioning plate.
[0009] Preferably, the positioning hole is 4, and the 4 positioning holes are arranged at the middle positions of the front, rear, left and right sides of the annular positioning plate respectively.
[0010] The utility model has the following beneficial effects:
[0011] The utility model discloses a pit mouth positioning ring, annular positioning plate and positioning pin, annular positioning plate fixedly covers the bottom of the outside ring wall of pit mouth positioning ring, is provided with the positioning hole on the annular positioning plate, and the positioning pin passes through the positioning hole to fix the annular positioning plate on the ground, and then fixes the pit mouth positioning ring on the ground, guarantees the position of pit mouth positioning ring not to produce the deviation in the process of carrying out the detection test of the water method of excavation test pit in pit mouth positioning ring, thereby improves the precision of test detection, and then guarantees the accuracy and effectiveness of detection data, accurately controls the compaction quality, guarantees the engineering quality uniformity, provides accurate and effective data support for engineering acceptance, ensures that the test pit size satisfies the specification requirement. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is the front view of the embodiment of the utility model.
[0013] Figure 2 It is the sectional view of Figure 1 .
[0014] Figure 3 It is the installation schematic drawing of the embodiment of the utility model.
[0015] Figure 1 pit mouth positioning ring, 2 annular positioning plate, 3 positioning hole, 4 positioning pin, 5 test pit, 6 earth-rock filling. DETAILED DESCRIPTION
[0016] To further illustrate each embodiment, the utility model provides with attached drawing. These attached drawings are part of the disclosure of the utility model, mainly used to illustrate the embodiment, and can cooperate with the relevant description of the specification to explain the operating principle of the embodiment. With reference to these contents, the person skilled in the art should understand other possible implementation manners and the advantages of the utility model. The components in the drawing are not drawn according to scale, and similar component symbols are usually used to represent similar components.
[0017] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two;The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0018] In the description of the utility model, it is necessary to explain that, unless there are definite provisions and limitations, the terms "connected", "connected" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be mechanical connection, also can be electrical connection, it can be directly connected, also can be indirectly connected through intermediate medium.
[0019] Referring to Figures 1-3 As shown in the utility model, as an embodiment of the utility model, a pit positioning mechanism for civil airport earthwork water filling test is provided, which comprises a pit positioning ring 1, an annular positioning plate 2 and a positioning pin 4, the annular positioning plate 2 is fixedly sleeved at the bottom of the outer side wall of the pit positioning ring 1, the annular positioning plate 2 is provided with a positioning hole 3, the positioning pin 4 passes through the positioning hole 3 to fix the annular positioning plate 2 on the ground, and then the pit positioning ring 1 is fixed on the ground, so that the position of the pit positioning ring 1 does not deviate during the process of carrying out the detection test of water filling method in the test pit 5 in the pit positioning ring 1, thereby improving the accuracy of test detection, and ensuring the accuracy and effectiveness of detection data, accurately controlling the compaction quality, ensuring the uniformity of engineering quality, providing accurate and effective data support for engineering acceptance, and ensuring that the test pit size meets the specification requirements.
[0020] In the embodiment, the annular positioning plate 2 is fixedly welded and sleeved at the bottom of the outer side wall of the pit positioning ring 1, so as to improve the connection stability between the annular positioning plate 2 and the pit positioning ring 1.
[0021] In the embodiment, the ring width of the annular positioning plate 2 is more than 5 times the ring width of the pit positioning ring 1, so as to ensure that the annular positioning plate 2 has a large enough fixing area and ensure the fixing effect.
[0022] In the embodiment, the positioning hole 3 and the positioning pin 4 are four corresponding ones, the four positioning holes 3 are respectively arranged at the middle positions of the front, rear, left and right sides of the annular positioning plate 2, and the positioning pin 4 is correspondingly locked at the middle positions of the front, rear, left and right sides of the annular positioning plate 2 by passing through the positioning hole 3, so as to ensure that the whole pit positioning mechanism can be stably fixed on the ground, and a certain distance is left between the positioning hole 3 and the hole of the pit positioning ring 1, so that the positioning pin 4 is not disturbed too much during the excavation process of the test pit 5 after being fixed and locked, and the overall excavation process is stable and reliable. Of course, the number of the positioning hole 3 and the positioning pin 4 can also be more than four, such as six, which is not limited here.
[0023] The size of the pit positioning ring 1 is determined according to the maximum particle size of the filling body according to the specification and design requirements, and the annular positioning plate 2 is fixedly welded and sleeved at the bottom of the outer side wall of the pit positioning ring 1 after being processed according to the size of the pit positioning ring 1.
[0024] The utility model discloses a pit mouth positioning ring 1 is fixed in the earth rock fill inside that has filled the completion in the whole water injection method detection process, and the stability of pit mouth positioning ring 1 is ensured, and the increase of annular positioning plate 2 makes the pit mouth positioning ring 1 original design size and shape pit more stable, reduces the deformation probability of pit mouth positioning ring 1, thereby improves the accuracy and effectiveness of detection data, accurately controls the compaction quality, guarantees the engineering quality uniformity, provides accurate and effective data support for engineering acceptance.
[0025] Although the utility model has been specifically shown and introduced in combination with the preferred implementation, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined by the appended claims, and all fall within the protection scope of the utility model.
Claims
1. A pit positioning mechanism, characterized by: The pit opening positioning ring, the annular positioning plate and the positioning pin are included, the annular positioning plate is fixedly sleeved at the bottom of the outer side ring wall of the pit opening positioning ring, the annular positioning plate is provided with a positioning hole, and the positioning pin penetrates through the positioning hole to fix the annular positioning plate on the ground.
2. A pit positioning mechanism according to claim 1, characterised in that: The annular positioning plate is fixedly and weldedly sleeved at the bottom of the outer side ring wall of the pit opening positioning ring.
3. A pit positioning mechanism according to claim 1, characterised in that: The ring width of the annular positioning plate is more than 5 times of the ring width of the pit opening positioning ring.
4. The pit positioning mechanism of claim 1, wherein: The positioning holes are multiple, and the multiple positioning holes are uniformly arranged on the annular positioning plate.
5. The hole positioning mechanism of claim 1, wherein: The positioning holes are four, and the four positioning holes are respectively arranged at the middle positions of the front, rear, left and right sides of the annular positioning plate.