A Real-Time Elevation Control Device for Earthwork Excavation Based on Dual Laser Ranging
Real-time elevation control during earthwork excavation is achieved through a dual-laser rangefinder, solving the problem of insufficient elevation accuracy in traditional methods, improving the real-time performance and safety of construction, and adapting to the needs of nighttime construction.
Patent Information
- Application Number
- CN202522790639.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-29
AI Technical Summary
Traditional high-precision control in earthwork excavation projects suffers from poor real-time performance, sparse measurement points, large human error, and automated solutions are prone to signal obstruction or are costly in deep foundation pits.
A real-time elevation control device for earthwork excavation based on dual-laser ranging is adopted. By using red and green laser lines intersecting, it provides vertical and inclined benchmark references, enabling real-time observation and multi-point synchronous measurement of the excavation face, and adapting to nighttime construction.
It improves the real-time nature and accuracy of the excavation process, reduces the frequency of measurement, enhances construction safety and efficiency, and adapts to nighttime construction environments.
Smart Images
Figure CN224945449U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foundation pit construction technology, and in particular to a real-time elevation control device for earthwork excavation based on dual laser ranging. Background Technology
[0002] In earthwork excavation projects, elevation accuracy directly affects construction quality and cost. Traditional methods mainly rely on manual measurement (such as levels) or fixed elevation stakes, which suffer from poor real-time performance, sparse measurement points, and large human errors. Recent automated solutions often employ single-point laser rangefinders or GNSS positioning; however, the former cannot simultaneously monitor slope flatness, while the latter suffers from signal obstruction in deep foundation pits and is costly. Utility Model Content
[0003] The purpose of this application is to provide a real-time elevation control device for earthwork excavation based on dual laser ranging, which solves the problem of high-frequency elevation control during the excavation process, enables nighttime control of the excavation elevation, achieves accurate excavation, shortens the elevation re-measurement time, reduces the frequency of measurement entry into the excavation process, and improves safety.
[0004] To achieve the above objectives, this application provides the following technical solution: a real-time elevation control device for earthwork excavation based on dual laser ranging, comprising a vertical support rod: vertically fixed to a stable foundation outside the excavation area, with a level fixedly installed on the top;
[0005] Bubble level: fixed to a vertical support rod;
[0006] A horizontal support rod, one end of which is rotatably connected to a rotating sleeve, the rotating sleeve being rotatably fitted onto the outside of the vertical support rod, the rotating sleeve being provided with a bolt to lock its rotation, and the tail end of the horizontal support rod being provided with a bolt to lock its rotation;
[0007] Red laser light: Vertically fixed to the horizontal support rod, it emits a red laser line that shoots vertically toward the bottom of the pit, and is used to provide a vertical reference.
[0008] Green laser light: It is tilted and fixed on a horizontal support rod. The tilt angle can be adjusted according to the foundation pit elevation. It emits a tilted green laser line. The green laser line and the red laser line intersect at the excavation surface. The elevation of the excavation surface is reflected in real time through the intersection point.
[0009] Preferably, a base is fixedly installed at the bottom end of the vertical support rod, and the base is fixed to the top of the pit by bolts.
[0010] Preferably, the vertical support rod is a telescopic support rod and is provided with locking bolts to restrict its extension and retraction.
[0011] Preferably, the horizontal support rod is a telescopic support rod and is provided with locking bolts to restrict its extension and retraction.
[0012] Preferably, both the vertical support rod and the horizontal support rod are provided with length markings.
[0013] In summary, the technical effects and advantages of this utility model are as follows:
[0014] By utilizing bidirectional laser lines, real-time observation of excavation depth can be achieved during the excavation process, improving the real-time nature and intuitiveness of the measurement.
[0015] By using the cross-set dual-point laser lines, multi-point synchronous measurement and elevation control can be achieved during the excavation process, guiding construction personnel to carry out precise excavation and improving excavation accuracy.
[0016] It adapts to special construction environments such as nighttime, reduces the dependence of measurement work on light conditions, and improves construction safety and work efficiency. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram illustrating the use of a real-time elevation control device for earthwork excavation based on dual laser ranging in an embodiment of this application during excavation.
[0019] Figure 2 This is a schematic diagram of the excavation completion demonstration structure of a real-time elevation control device for earthwork excavation based on dual laser ranging, as described in an embodiment of this application.
[0020] Figure 3 This is a schematic diagram of the over-excavation demonstration structure of a real-time elevation control device for earthwork excavation based on dual laser ranging in an embodiment of this application.
[0021] Figure 4 This is a partial structural schematic diagram of a real-time elevation control device for earthwork excavation based on dual laser ranging, as described in an embodiment of this application.
[0022] In the diagram: 1. Bubble level; 2. Vertical support rod; 3. Horizontal support rod; 4. Red laser light; 5. Green laser light; 6. Red laser line; 7. Green laser line; 8. Base; 9. Top of pit; 10. Bottom of pit; 11. Rotating sleeve; 12. Level. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] It should also be noted that all standard parts used in this application are commercially available, and can be custom-made according to the description and drawings. Unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances, and unless explicitly limited, machinery, parts, and equipment can all adopt conventional models in the prior art.
[0026] In this document, the term "comprising" is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0027] Example: Reference Figure 1-4The device shown is a real-time elevation control device for earthwork excavation based on dual laser ranging. It includes a vertical support rod 2, vertically fixed to a stable foundation outside the excavation area. A base 8 is fixedly installed at the bottom, and the base 8 is bolted to the top of the pit 9, thus stabilizing the entire device at the top of the pit 9 and ensuring stability during construction. The vertical support rod 2 is a telescopic support rod with locking bolts to limit its extension and retraction, allowing for height adjustment according to actual needs. A level 12 is fixedly installed at its top, and a bubble level 1 is also fixed to the rod. The height of the bubble level 1 is adjustable, allowing for adjustment of the verticality of the upright during installation, working in conjunction with the level 12 to ensure the installation accuracy of the entire device. Furthermore, the vertical support rod 2 has length graduations, providing a clear view of height adjustment and ensuring its verticality.
[0028] Horizontal support rod 3: One end is rotatably connected to a rotating sleeve 11, which is rotatably fitted onto the outside of the vertical support rod 2. Both the rotating sleeve 11 and the horizontal support rod 3 have bolts at their ends to lock their rotation. The horizontal support rod 3 is a telescopic support rod, with a length that can extend and retract within the range of 1.5-3m. It has locking bolts to limit its extension and retraction, and also has length markings. The horizontal support rod 3 can achieve 360° horizontal rotation and pitch adjustment, and is used to fix the red laser light 4 and the green laser light 5. Through rotation, pitch adjustment, and telescopic functions, it can adapt to different pit shapes and excavation conditions, achieving precise positioning of the laser line.
[0029] Red laser light 4: Vertically fixed on the horizontal support rod 3, it can emit a red laser line 6 that is vertically directed toward the bottom of the pit 10, providing a vertical reference for the entire device.
[0030] Green laser light 5: It is tilted and fixed on the horizontal support rod 3. The tilt angle can be adjusted according to the foundation pit elevation. It emits tilted green laser line 7. The green laser line 7 and the red laser line 6 form an intersection point on the excavation surface. The elevation of the excavation surface is reflected in real time through the intersection point position.
[0031] Before excavating the foundation pit, the device is first fixed to a stable position on the top of the foundation pit 9 using bolts via the base 8 to ensure that the device is securely installed.
[0032] Based on the design depth and slope of the foundation pit, the theoretical position of the intersection of the red laser line 6 and the green laser line 7 at the bottom 10 of the foundation pit was accurately calculated, providing a basis for subsequent adjustments.
[0033] Adjust the height of the vertical support rod 2 and secure it using the locking bolts. Simultaneously observe the bubble level 1 and the top level 12 to ensure the vertical support rod 2 is vertical. The adjusted height can be visually controlled using the length scale on the vertical support rod 2.
[0034] Adjust the horizontal support rod 3 by rotating the sleeve 11 to adjust its rotation angle and fixing it with the locking bolt; adjust its pitch angle and lock it; at the same time, extend and retract the horizontal support rod 3 according to the actual situation and fix it with the locking bolt, and combine it with the length scale on the horizontal support rod 3 to ensure the accuracy of the adjustment.
[0035] Adjust the tilt angle of the green laser light 5 so that the red laser line 6 and the green laser line 7 intersect at the theoretical position at the bottom of the pit 10.
[0036] During earthwork excavation, the excavator operator directly observes the intersection of the red laser line 6 and the green laser line 7 on the excavation surface. When the excavation surface reaches the design elevation, the intersection should be located on the excavation surface.
[0037] If the intersection point is higher than the excavation surface, it indicates that the excavation depth is insufficient, and the driver needs to control the excavator to continue excavating.
[0038] If the intersection point is lower than the excavation surface, it indicates over-excavation, and the driver must immediately adjust the excavation operation. This real-time, intuitive feedback allows the driver to adjust the excavation depth and position promptly, achieving precise control over the excavation elevation.
[0039] The visibility of the laser line is more prominent at night or in poor lighting conditions. This device can effectively solve the problem of difficult nighttime measurement using traditional measurement methods, thereby improving construction efficiency and safety.
[0040] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A real-time elevation control device for earthwork excavation based on dual laser ranging, characterized in that: include: Vertical support rods: vertically fixed to a stable foundation outside the excavation area, with a level fixedly installed at the top; Bubble level: fixed to a vertical support rod; A horizontal support rod, one end of which is rotatably connected to a rotating sleeve, the rotating sleeve being rotatably fitted onto the outside of the vertical support rod, the rotating sleeve being provided with a bolt to lock its rotation, and the tail end of the horizontal support rod being provided with a bolt to lock its rotation; Red laser light: Vertically fixed to the horizontal support rod, it emits a red laser line that shoots vertically toward the bottom of the pit, and is used to provide a vertical reference. Green laser light: It is tilted and fixed on a horizontal support rod. The tilt angle can be adjusted according to the foundation pit elevation. It emits a tilted green laser line. The green laser line and the red laser line intersect at the excavation surface. The elevation of the excavation surface is reflected in real time through the intersection point.
2. The real-time elevation control device for earthwork excavation based on dual laser ranging according to claim 1, characterized in that: The bottom end of the vertical support rod is fixedly installed with a base, which is fixed to the top of the pit by bolts.
3. The real-time elevation control device for earthwork excavation based on dual laser ranging according to claim 1, characterized in that: The vertical support rod is a telescopic support rod and is equipped with locking bolts that restrict its extension and retraction.
4. The real-time elevation control device for earthwork excavation based on dual laser ranging according to claim 1, characterized in that: The horizontal support rod is a telescopic support rod and is equipped with locking bolts that restrict its extension and retraction.
5. The real-time elevation control device for earthwork excavation based on dual laser ranging according to claim 1, characterized in that: Both the vertical and horizontal support rods are equipped with length markings.