Fabricated excavation rack and intelligent control and self-adaptive positioning system
By employing a dual motion structure of support platform and operating platform, along with an intelligent control system, the problem of insufficient adjustment accuracy of existing prefabricated excavation platforms during multi-stage construction method switching has been solved, enabling efficient, safe, and standardized tunnel construction operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA RAILWAY FOURTH BUREAU GROUP FIFTH CONSTRUCTION CO LTD
- Filing Date
- 2026-03-05
- Publication Date
- 2026-05-08
AI Technical Summary
Existing prefabricated excavation platforms are difficult to adjust accurately in tunnel construction with multiple steps and switching methods. They lack automated control, pose safety hazards, are cumbersome to operate, and cannot quickly adapt to the requirements of complex tunnel cross sections.
It adopts a dual motion structure of support platform and operation platform, combined with intelligent control and adaptive positioning system. The platform achieves adaptive positioning through ranging device, storage module and central controller, and the support platform and operation platform can be adjusted in coordination. It has independent adjustment capability in vertical and horizontal directions.
It improved the efficiency and precision of tunnel construction, enabled automated operation of the multi-stage construction method, enhanced the standardization of construction, and provided safety guarantees.
Smart Images
Figure CN121993219A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tunnel construction technology, and in particular to a prefabricated excavation platform and an intelligent control and adaptive positioning system. Background Technology
[0002] In tunnel construction, prefabricated excavation platforms are crucial equipment used to support the excavation face and provide operating space for construction personnel and equipment. With the development of construction techniques, various methods have emerged to adapt to different geological conditions and engineering requirements, such as the three-step method, the micro-step method, and the high-step method. These methods have different specific requirements regarding the height and depth of the excavation steps and the location of the working platform.
[0003] Currently, commercially available prefabricated excavation platforms typically possess basic mechanized adjustment functions, such as raising and lowering the support platform via hydraulic cylinders or motors, and horizontally extending and retracting the operating platform. These platforms improve the flexibility and adaptability of the equipment to some extent. However, in practical applications, especially in complex tunnel construction scenarios involving switching between various step construction methods, existing technologies exhibit the following significant drawbacks: (1) The lifting and extension of the platform largely depend on individual or manual control by the operator. Each time the excavation step or construction method is changed, the worker needs to repeatedly adjust the height of the support platform and the extension length of the operating platform based on visual inspection or simple measurement to find a suitable working position. This process is not only time-consuming and laborious, but also difficult to ensure the accuracy of adjustment, which directly affects the efficiency and quality of the excavation operation; (2) The existing platform is only a general movable machine. Its control system does not have the function of storing standard parameters of specific construction methods, and it cannot automatically calculate and drive the platform to the target position according to the selected construction method. This makes it impossible for the equipment to quickly and accurately adapt to the standard construction methods with strict size requirements such as "three-step" and "micro-step", which restricts the standardization and normalization of construction; (3) The horizontal extension length of the operating platform lacks accurate real-time monitoring and feedback. In the complex environment inside the tunnel, relying solely on manual judgment, it is very easy for the platform to extend too far, causing a collision with the excavation face, or extend too short, affecting normal construction. Existing devices usually lack an automatic safety interlocking mechanism based on real-time distance detection, which poses a significant safety hazard.
[0004] Insufficient coordination among mechanisms: The lifting and lowering of the support platform, the extension and retraction of the operating platform, and the adjustment of the support frame width are often operated independently, making it difficult to achieve coordinated multi-axis movements. For example, it is impossible to automatically fine-tune the horizontal position of the platform during lifting and lowering to maintain the best relative posture with the excavation face, making the operation cumbersome and difficult to achieve the optimal working state. Summary of the Invention
[0005] This invention provides a prefabricated excavation platform and an intelligent control and adaptive positioning system, which can solve the problems of the limited adjustment freedom of the excavation platform in the prior art and its inability to flexibly adapt to the excavation operation position requirements of different tunnel steps.
[0006] To address the above problems, the present invention provides a prefabricated excavation platform, comprising: A first support frame and a second support frame are arranged opposite to each other; A support platform is positioned between the first support frame and the second support frame. The support platform is connected to the first support frame and the second support frame, and the support platform can move up and down on the first support frame and the second support frame. An operating platform is mounted on the support platform, and the operating platform moves horizontally on the support platform.
[0007] The prefabricated excavation platform provided by this invention has, but is not limited to, the following beneficial effects compared to the prior art: By movably connecting the support platform between the first and second support frames and enabling it to move up and down, while simultaneously placing the operating platform on the support platform and enabling it to move horizontally, this dual-motion structure gives the entire platform independent and coordinated adjustment capabilities in both vertical and horizontal directions, thus effectively solving the problems of fixed operating range and inconvenient adjustment of traditional excavation platforms.
[0008] Operators can flexibly and quickly adjust the lifting and lowering of the support platform to match the working face height according to the actual height of the tunnel excavation steps. They can also precisely control the extension distance of the platform relative to the excavation face by moving it horizontally. There is no need to move or disassemble the entire platform. This significantly improves the equipment's adaptability and positioning efficiency to complex and variable tunnel cross-sections and multi-step construction processes, providing a stable and flexibly configurable working plane for safe and efficient excavation operations.
[0009] Preferably, the first support frame and the second support frame are vertically provided with lifting rails, and the support platform is provided with a lifting drive device corresponding to the lifting rails, the lifting drive device driving the support platform to move up and down along the lifting rails.
[0010] Preferably, both the first support frame and the second support frame are composed of a base support and a sliding support. The sliding support is located on the base support and moves horizontally on the base support. Both the sliding support and the base support are provided with the lifting rails, and the horizontal cooperation between the sliding support and the base support allows the lifting rails on the sliding support and the base support to be connected.
[0011] Preferably, a horizontal driving device is provided between the base support and the sliding support, and the horizontal driving device drives the sliding support to move horizontally relative to the base support.
[0012] Preferably, the support platform is provided with a horizontal guide rail, and the operating platform is provided with a slider and a platform driving device corresponding to the horizontal guide rail. The platform driving device drives the operating platform to move horizontally along the horizontal guide rail.
[0013] Preferably, embodiments of this application also provide an intelligent control and adaptive positioning system, comprising: A distance measuring device is installed on the operating platform, and the distance measuring device is used to detect the distance between the operating platform and the excavation face; The storage module pre-stores standard parameter sets for various excavation methods, including standard step height, maximum safe extension length of platform, and minimum safe working distance for each method. The central controller is used to control the drive device of the excavation platform according to the selected construction method and real-time distance measurement data, so that the operating platform can adaptively position itself to the target working position. The central controller is configured to: call the corresponding standard parameter set according to the selected excavation method, and combine it with the real-time detection data of the ranging device to generate control commands to drive the corresponding device, so that the operating platform can adaptively position itself to the target working position that matches the current excavation step.
[0014] The intelligent control and adaptive positioning system provided by this invention has, but is not limited to, the following beneficial effects compared to existing technologies: The system obtains accurate environmental perception data by detecting the distance between the operating platform and the excavation face in real time through the ranging device; combined with the standard parameter set of various excavation methods pre-stored in the storage module, the system obtains standardized knowledge of the construction process; finally, the central controller calculates, makes decisions and automatically controls the drive device of the excavation platform according to the selected specific construction method, integrating real-time ranging data and corresponding standard parameters, thereby realizing the adaptive and intelligent positioning of the operating platform relative to the current excavation step.
[0015] This system effectively solves the problem of traditional test benches relying on manual experience and repeated trial adjustments for positioning. It transforms complex multi-stage construction methods into automated operations that can be executed with a single click, greatly improving construction efficiency, positioning accuracy, and process standardization. At the same time, by embedding safety parameters into the control logic, it provides proactive and traceable safety assurance for the operation process, promoting a fundamental shift from mechanization to intelligence in tunnel excavation operations.
[0016] Preferably, the control logic of the central controller includes safety interlock logic: when the real-time distance detected by the ranging device is less than the minimum safe working distance corresponding to the current construction method, the central controller automatically limits or stops the platform driving device to prevent the operating platform from extending excessively.
[0017] Preferably, the central controller is configured with at least two control modes: Independent mode: The lifting movement of the support platform, the horizontal movement of the operating platform, and the horizontal movement of the sliding support can be controlled independently; Linkage mode: The central controller controls the lifting drive device and the platform drive device to work together, so that when the operating platform is vertically lifted, its horizontal position can be compensated and adjusted according to preset rules or real-time distance measurement data.
[0018] Preferably, the ranging device is one or more of a laser ranging sensor, an ultrasonic sensor, or an infrared ranging sensor.
[0019] Preferably, it also includes a status monitoring module, which is used to monitor the operating status of the lifting drive device, the platform drive device and the horizontal drive device in real time. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.
[0021] Figure 1 This is a schematic diagram of the overall structure of a prefabricated excavation platform according to an embodiment of the present invention; Figure 2 for Figure 1 Enlarged structural diagram of area A in the middle; Figure 3 This is a schematic diagram of the support platform according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the operating platform according to an embodiment of the present invention.
[0022] Explanation of reference numerals in the attached figures: 100. First support frame; 200. Second support frame; 300. Support platform; 310. Lifting drive device; 320. Horizontal guide rail; 400. Operating platform; 410. Slider; 500. Lifting rail; 600. Basic support component; 700. Sliding support component. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.
[0024] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0025] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.
[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection 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 application according to the specific circumstances.
[0027] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.
[0028] like Figures 1 to 4 As shown in the figure, an embodiment of the present invention provides a prefabricated excavation platform, including a first support frame 100 and a second support frame 200, a support platform 300 and an operating platform 400. The first support frame 100 and the second support frame 200 are arranged opposite to each other. The support platform 300 is located between the first support frame 100 and the second support frame 200, and the support platform 300 is connected to the first support frame 100 and the second support frame 200, and the support platform 300 can move up and down on the first support frame 100 and the second support frame 200. The operating platform 400 is arranged on the support platform 300, and the operating platform 400 can move horizontally on the support platform 300.
[0029] The platform mainly consists of a first support frame 100, a second support frame 200, a support platform 300, and an operating platform 400. The first support frame 100 and the second support frame 200 are positioned horizontally and parallel to each other at the bottom of the tunnel. The support platform 300 is connected to the first support frame 100 and the second support frame 200 via connecting parts on both sides. The operating platform 400 is mounted on the upper surface of the support platform 300 via a sliding mechanism. The support platform 300 can move vertically relative to the first and second support frames 200, while the operating platform 400 can move horizontally on the platform of the support platform 300, thus achieving flexible two-dimensional adjustment of the working position in both height and depth.
[0030] In this embodiment of the application, the first support frame 100 and the second support frame 200 are vertically provided with lifting rails 500, and the support platform 300 is provided with a lifting drive device 310 corresponding to the lifting rails 500. The lifting drive device 310 drives the support platform 300 to move up and down along the lifting rails 500.
[0031] In the above structure, vertically extending lifting rails 500 are fixedly installed on the inner sides of the first support frame 100 and the second support frame 200, respectively. These rails can be racks, guide rails, or columns with positioning holes. Lifting drive devices 310 are installed at corresponding positions on both sides of the support platform 300, and the output end of the lifting drive device 310 engages with or connects to the lifting rails 500. When the lifting drive device 310 is activated, its driving force acts on the lifting rails 500, thereby driving the entire support platform 300, together with the operating platform 400 on it, to perform smooth and precise lifting movements along the guide of the lifting rails 500.
[0032] In a specific embodiment of this application, to meet the requirement that traditional excavation rigs need to keep the support platform fixed at the top position in all scenarios, this prefabricated excavation rig further provides a limit locking mechanism at the top of the lifting rails 500 of the first support frame 100 and the second support frame 200. This limit locking mechanism includes a mechanical locking pin hole at the top of the lifting rail 500 and an elastic locking pin assembly at a corresponding position on the support platform 300. When the support platform 300 rises to a preset maximum limit position under the drive of the lifting drive device 310, the elastic locking pin assembly automatically springs into the mechanical locking pin hole under the action of an internal spring, thereby rigidly locking the support platform 300 at the top position and preventing it from descending due to accidents or misoperation, thus meeting the basic requirements of tunnel operations in reality.
[0033] In this embodiment of the application, the support platform 300 and the operation platform 400 are mainly used to support the operators in tunnel operations.
[0034] If it is necessary to unlock, the operator can pull the elastic locking pin assembly by using the manual unlocking lever located on the side of the support platform 300 to disengage it from the locking pin hole. After that, the support platform 300 can descend normally under the drive of the lifting drive device 310.
[0035] In this embodiment of the application, both the first support frame 100 and the second support frame 200 are composed of a basic support member 600 and a sliding support member 700; Among them, the sliding support 700 is located on the base support 600, and the sliding support 700 moves horizontally on the base support 600; Both the sliding support 700 and the base support 600 are equipped with lifting rails 500. The horizontal cooperation between the sliding support 700 and the base support 600 allows the lifting rails 500 on the sliding support 700 to connect with the lifting rails 500 on the base support 600.
[0036] To accommodate tunnel cross-sections of varying widths, each support frame is designed to consist of a base support 600 and a sliding support 700. The base support 600 is fixed to the ground, while the sliding support 700 is mounted on a guide rail at the top of the base support 600 via a groove or pulley at its bottom, allowing it to slide horizontally. The lifting rail 500 is divided into two sections: one fixed to the inside of the base support 600, and the other fixed to the inside of the sliding support 700. When the sliding support 700 slides to one side, the ends of the two lifting rail sections 500 can be precisely aligned and mechanically connected via pins or positioning blocks. This widens the overall span of the platform while ensuring the continuous and uninterrupted operation of the lifting rail 500 of the support platform 300.
[0037] Preferably, the foundation support 600 can be set on the foundation track inside the tunnel and moved by the foundation track.
[0038] In this embodiment of the application, a horizontal driving device is provided between the base support 600 and the sliding support 700, and the horizontal driving device drives the sliding support 700 to move horizontally relative to the base support 600.
[0039] To enable the automatic movement of the sliding support 700, a horizontal drive device is installed between the base support 600 and the sliding support 700. The horizontal drive device can be a small hydraulic cylinder, an electric lead screw, or a rack and pinion mechanism, with one end fixed to the base support 600 and the other end connected to the sliding support 700. By controlling the extension, retraction, or rotation of the horizontal drive device, the sliding support 700 can be precisely driven to move horizontally relative to the base support 600, achieving automatic adjustment of the support frame width and automatic docking of the lifting rail 500, eliminating the need for manual handling and positioning.
[0040] In this embodiment of the application, a horizontal guide rail 320 is provided on the support platform 300, and a slider 410 and a platform driving device are provided on the operation platform 400 corresponding to the horizontal guide rail 320. The platform driving device drives the operation platform 400 to move horizontally along the horizontal guide rail 320.
[0041] In the above structure, at least two parallel horizontal guide rails 320 are fixedly installed on the upper surface of the support platform 300 or in the internal space of the support platform 300, in the direction toward the excavation face. A slider 410 or track matching the horizontal guide rails 320 is installed at the bottom of the operating platform 400, and the slider 410 or track engages with the horizontal guide rails 320 on the support platform 300.
[0042] Meanwhile, the operating platform 400 is equipped with a platform drive device, such as a servo motor driving a gear to mesh with a rack fixed on the support platform 300, or a hydraulic cylinder to directly push and pull. When the platform drive device is working, it drives the slider 410 at the bottom of the operating platform 400 to slide along the horizontal guide rail 320, thereby realizing the horizontal linear motion of the operating platform 400 extending or retracting.
[0043] In this embodiment, an intelligent control and adaptive positioning system is also provided. This system is used for the prefabricated excavation platform in the above embodiments. The system includes: A distance measuring device is installed on the operating platform 400. The distance measuring device is used to detect the distance between the operating platform 400 and the excavation face. The storage module contains a set of standard parameters for various excavation methods. The set of standard parameters includes the standard step height, maximum safe extension length of the platform, and minimum safe working distance for each method. The central controller is used to control the drive device of the excavation platform according to the selected construction method and real-time distance measurement data, so that the operating platform 400 adaptively positions itself to the target working position. The central controller is configured to: call the corresponding standard parameter set according to the selected excavation method, and combine it with the real-time detection data of the ranging device to generate control commands to drive the corresponding device, so that the operating platform 400 can adaptively position itself to the target working position that matches the current excavation step.
[0044] The system described above includes, in terms of hardware, a ranging device mounted on the leading edge of the operating platform 400, a storage module 402 that stores standard parameters commonly used in construction methods such as the three-step method, the micro-step method, and the high-step method in a database, including the first step height of 1.8m, the maximum platform extension limit of 2.5m, and the safe working distance of 0.8m; and a central controller as its core. The central controller communicates with the ranging device, the storage module, and all drive devices via wired cables.
[0045] Its workflow is as follows: After the operator selects the construction method, the controller calls up the corresponding parameters and, in conjunction with the distance data from the excavation face fed back in real time by the ranging device, calculates the target height required for the support platform 300 and the target extension length of the operating platform 400 through the built-in algorithm. Then, it automatically controls the coordinated action of each drive device so that the operating platform 400 finally reaches the optimal working position that is completely matched with the current step requirements of the construction method.
[0046] In the above, the central controller is set as a PLC or an industrial computer.
[0047] In the above process, the target height required for the support platform 300 and the target extension length of the operating platform 400 are calculated by the built-in algorithm. The built-in algorithm logic includes the following steps: First, obtain the standard step height parameter H corresponding to the selected construction method, and the current distance D between the operating platform 400 and the excavation face detected in real time by the distance measuring device; then calculate the target height H1 of the support platform 300. The value of H1 is equal to the theoretical height of the current excavation step. This theoretical height is determined according to the construction sequence of the construction method. For example, for the three-step method, when the upper step is constructed, H1 is the standard height of the upper step, and when the middle step is constructed, it is the sum of the standard heights of the upper step and the middle step; then calculate the target extension length L1 of the operating platform 400, L1=DS, where S is the minimum safe working distance corresponding to the construction method, and L1 must not exceed the maximum safe extension length of the platform under the construction method; if the calculated L1 exceeds the maximum safe extension length, L1 is automatically adjusted to the maximum safe extension length and a prompt signal is issued; if D is less than S, the safety interlock logic is triggered, the extension action is not performed, and an alarm is issued.
[0048] In this embodiment of the application, the control logic of the central controller includes safety interlock logic: when the real-time distance detected by the ranging device is less than the minimum safe working distance corresponding to the current construction method, the central controller automatically limits or stops the platform driving device to prevent the operating platform 400 from extending excessively.
[0049] In the above structure, the software program of the central controller integrates safety interlocking logic. Specifically, the system continuously compares the real-time distance collected by the ranging device with the minimum safe operating distance parameter corresponding to the currently active working method stored in the storage module. Once it detects that the real-time distance is less than the safety threshold, for example, in a certain working method, the required safety threshold is 0.8m, but the actual distance is 0.5m, which is less than the safe distance of 0.8m, the central controller will immediately issue a stop or reverse command to the platform drive device, forcibly locking or retracting the operating platform 400. This eliminates the risk of collision between the platform and the rock wall due to operational errors at the electrical control level, thus achieving operational safety.
[0050] In this embodiment, the central controller is configured with at least two control modes: independent mode and linkage mode. In independent mode, the lifting and lowering movement of the support platform 300, the horizontal movement of the operating platform 400, and the horizontal movement of the sliding support 700 can be controlled independently. Operators can adjust each drive device separately through the independent control buttons or knobs on the control panel to realize the independent lifting and lowering of the support platform 300, the independent extension and retraction of the operating platform 400, and the independent horizontal displacement of the sliding support 700. This is suitable for scenarios that require fine adjustment of the position of individual components, such as equipment installation and debugging or manual alignment under special working conditions.
[0051] In the linkage mode, the central controller controls the lifting drive device 310 and the platform drive device to work together, so that the horizontal position of the operating platform 400 can be compensated and adjusted according to preset rules or real-time distance measurement data when the support platform 300 is raised or lowered from a lower position to a higher position. If the distance measuring device detects that the distance between the operating platform 400 and the excavation face has shortened due to the change in height, the central controller can automatically control the platform drive device to fine-tune the horizontal retraction distance of the operating platform 400 to ensure that the minimum safe working distance requirement is always met throughout the entire lifting and lowering process. Conversely, when the support platform 300 is lowered, the operating platform 400 can be extended appropriately according to the distance change to maintain the optimal working radius.
[0052] In this embodiment, the ranging device is one or more of a laser ranging sensor, an ultrasonic sensor, or an infrared ranging sensor.
[0053] In the above structure, the ranging device can be implemented in several ways: preferably, a laser ranging sensor is used because it has the characteristics of high accuracy, fast response, and strong anti-interference ability. It can be installed in the center of the front edge of the operating platform 400° for precise single-point ranging. Another option is to use an array of multiple ultrasonic sensors to achieve surface distance detection on irregular excavation faces.
[0054] In addition, infrared ranging sensors can be used as an economical alternative. These sensors can be flexibly selected or combined according to the dust and moisture environment inside the tunnel, and the signals are stably transmitted to the central controller.
[0055] In this embodiment of the application, a status monitoring module is also included, which is used to monitor the operating status of the lifting drive device, the platform drive device and the horizontal drive device in real time.
[0056] The status monitoring module specifically includes a current sensor, a voltage sensor, a displacement encoder, and a temperature sensor, which are respectively installed on the motors, transmission mechanisms, and key connection points of each drive device. Among them, the current sensor collects the motor's operating current in real time, and when the detected current value exceeds a preset threshold, it is determined to be an overload state; the displacement encoder accurately records the lifting stroke of the support platform 300 and the horizontal displacement of the operating platform 400, ensuring position control accuracy.
[0057] A temperature sensor monitors the temperature of the motor windings and triggers a high-temperature warning when the temperature exceeds the set temperature.
[0058] All monitoring data is transmitted to the central controller in real time via the data acquisition card. The controller analyzes and processes the data. If an abnormal state is detected, the shutdown protection program is immediately executed, and the corresponding fault code is displayed on the fault indicator light on the operation panel. At the same time, the buzzer emits an intermittent alarm sound to remind the operator to troubleshoot the fault in time.
[0059] In this application, an embodiment is also provided in which the support platform 300 and the operating platform 400 are always located at the top of the first support frame 100 and the second support frame 200.
[0060] The top position can be fixed at the top position by the limiting locking mechanism in the previous embodiment to prevent the support platform 300 and the operating platform 400 from slipping.
[0061] In the second embodiment, since a foundation support 600 and a sliding support 700 are provided, the excavation platform can be installed in a modular manner, specifically as follows: First, the basic support members 600 in the first support frame 100 and the second support frame 200 are respectively set on both sides. In this application, there are four basic support members 600, which are set in pairs. After the installation of the basic support members 600 is completed, a sliding support member 700 is set on the top of the basic support member 600. Each basic support member 600 has a corresponding sliding support member 700 on its top. Preferably, a sliding support member 700 can also be set on the top of the sliding support member 700. The setting height of the sliding support member 700 is adaptively adjusted according to the working height of the tunnel. At the same time, in this application, the height of the sliding support member 700 is not uniform, and a suitable height of sliding support member 700 can be selected according to the height of the tunnel.
[0062] After the sliding support 700 is installed, the support platform 300 is installed. The support platform 300 can be installed by setting the lifting drive device 310 on the support platform 300 at the bottom of the base support 600 and at the position of the corresponding lifting rail 500, so that the lifting drive device 310 can drive the support platform 300 to rise to the top position of the sliding support 700.
[0063] When tunnel construction enters a section where the height decreases, to avoid the platform becoming too tall and unable to pass or operate, the support platform 300 can be lowered from its top position until it reaches the top of the foundation support 600. Specifically, by releasing the limit locking mechanism and controlling the lifting drive device 310, the support platform 300 is lowered along the lifting track 500 until the bottom support structure of the support platform 300 rests on the top bearing surface of the foundation support 600, while the sliding support 700 on the foundation support 600 is effectively removed. At this position, the support platform 300 can be fixed to the foundation support 600 via pins or quick-connect fittings, thus maintaining a stable working platform while lowering the overall working height, and keeping the support platform 300 at the top of the first and second supports.
[0064] As described above, since a foundation support 600 and a sliding support 700 are provided, in specific implementation, a support platform 300 is provided at the top of both the foundation support 600 and the sliding support 700, so that a multi-layer support platform 300 is provided on the excavation platform.
[0065] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A prefabricated excavation platform, characterized in that, include: A first support frame (100) and a second support frame (200) are arranged opposite to each other. A support platform (300) is disposed at the top position between the first support frame (100) and the second support frame (200). The support platform (300) is connected to the first support frame (100) and the second support frame (200), and the support platform (300) can move up and down through the first support frame (100) and the second support frame (200). An operating platform (400) is mounted on the support platform (300), and the operating platform (400) moves horizontally on the support platform (300).
2. The prefabricated excavation platform according to claim 1, characterized in that, The first support frame (100) and the second support frame (200) are vertically provided with lifting rails (500), and the support platform (300) is provided with a lifting drive device corresponding to the lifting rails (500). The lifting drive device drives the support platform (300) to move up and down along the lifting rails (500).
3. The prefabricated excavation platform according to claim 2, characterized in that, Both the first support frame (100) and the second support frame (200) are composed of a base support (600) and a sliding support (700); The sliding support (700) is located on the base support (600), and the sliding support (700) moves horizontally on the base support (600). Both the sliding support (700) and the base support (600) are provided with lifting rails (500), and the horizontal cooperation between the sliding support (700) and the base support (600) allows the lifting rails (500) on the sliding support (700) and the base support (600) to be connected.
4. The prefabricated excavation platform according to claim 3, characterized in that, A horizontal driving device is provided between the base support (600) and the sliding support (700), and the horizontal driving device drives the sliding support (700) to move horizontally relative to the base support (600).
5. A prefabricated excavation platform according to claim 1, characterized in that, The support platform (300) is provided with a horizontal guide rail (320), and the operation platform (400) is provided with a slider (410) and a platform driving device corresponding to the horizontal guide rail (320). The platform driving device drives the operation platform (400) to move horizontally along the horizontal guide rail (320).
6. An intelligent control and adaptive positioning system, characterized in that, Including: A distance measuring device is installed on the operating platform (400), and the distance measuring device is used to detect the distance between the operating platform (400) and the excavation face; The storage module pre-stores standard parameter sets for various excavation methods, including standard step height, maximum safe extension length of platform, and minimum safe working distance for each method. The central controller is used to control the drive device of the excavation platform according to the selected construction method and real-time distance measurement data, so that the operating platform (400) adaptively positions itself to the target working position. The central controller is configured to: call the corresponding standard parameter set according to the selected excavation method, and combine the real-time detection data of the ranging device to generate control commands to drive the corresponding device, so that the operating platform (400) adaptively positions itself to the target working position that matches the current excavation step.
7. The intelligent control and adaptive positioning system according to claim 6, characterized in that, The control logic of the central controller includes safety interlock logic: when the real-time distance detected by the ranging device is less than the minimum safe working distance corresponding to the current construction method, the central controller automatically restricts or stops the platform driving device to prevent the operating platform (400) from extending excessively.
8. The intelligent control and adaptive positioning system according to claim 7, characterized in that, The central controller is configured with at least two control modes: Independent mode: The lifting movement of the support platform (300), the horizontal movement of the operating platform (400) and the horizontal movement of the sliding support (700) can be controlled independently; Linkage mode: The central controller controls the lifting drive device and the platform drive device to work together so that when the operating platform (400) is vertically lifted, its horizontal position can be compensated and adjusted according to preset rules or real-time distance measurement data.
9. The intelligent control and adaptive positioning system according to claim 6, characterized in that, The ranging device is one or more of a laser ranging sensor, an ultrasonic sensor, or an infrared ranging sensor.
10. An intelligent control and adaptive positioning system according to any one of claims 6-9, characterized in that, It also includes a status monitoring module, which is used to monitor the operating status of the lifting drive device, the platform drive device and the horizontal drive device in real time.