Structural steel-based chord member type double-truss girder supporting device with feedback function

Abstract

The invention discloses a chord member type double-truss girder supporting device with a feedback function based on structural steel, and relates to the technical field of supporting devices.The supporting device comprises a main supporting mechanism, a large-span beam mechanism, a string tensioning mechanism, a servo mechanism, an angle supporting mechanism, a detection mechanism and a foundation pit, the string tensioning mechanism is in fastening connection with the large-span beam mechanism, the servo mechanism is in transmission connection with the string tensioning mechanism, the detection mechanism is electrically connected with the servo mechanism, the main supporting mechanism, the large-span beam mechanism, the servo mechanism and the angle supporting mechanism are all in fastening connection with a foundation pit, the tension of an inhaul cable is adjusted through a string tensioning motor and transmitted to a large-span beam, and the position of the beam is adjusted through a sliding saddle. The servo mechanism adjusts the longitudinal and transverse hydraulic cylinders according to data to ensure the stability of the supporting device.

Description

Technical Field

[0001] The invention relates to the technical field of support devices, in particular to a chord-type double-truss beam support device with feedback function based on structural steel. Background Art

[0002] With the acceleration of urbanization and the continuous development of construction, foundation pit support technology has become an indispensable part of modern civil engineering. Foundation pit support devices are mainly used in the construction stage of underground structures to support and protect the soil around the foundation pit to prevent it from collapsing or deforming, thereby ensuring construction safety and the stability of the surrounding environment. As urban construction expands more and more underground, foundation pit support technology is also constantly developing, moving towards high efficiency, energy saving and environmental protection.

[0003] At present, the existing technologies for foundation pit support mostly use steel pipes as the main support, with only one set of tension beams, anchor ends, and steel purlins, which are driven or driven into the soil layer through combined truss supports to form a waterproof wall, which plays a role of support and isolation to prevent soil collapse.

[0004] Although the existing technology can meet the needs of foundation pit support to a certain extent, it lacks adjustment capability and cannot accurately adjust large-span beams, resulting in instability. Secondly, it lacks earthquake resistance and the instantaneous impact it brings. Therefore, technical personnel in this field provide a chord-type double-truss support device with feedback function based on structural steel to solve the problems raised in the above background. Summary of the invention

[0005] The object of the present invention is to provide a chord-type double-truss beam support device with feedback function based on structural steel to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The supporting device includes a main supporting mechanism, a large-span beam mechanism, a string tensioning mechanism, a servo mechanism, an angle support mechanism, a detection mechanism and a foundation pit. The main supporting mechanism and the large-span beam mechanism are tightly connected, the string tensioning mechanism and the large-span beam mechanism are tightly connected, the servo mechanism and the string tensioning mechanism are transmission-connected, the detection mechanism and the servo mechanism are electrically connected, and the main supporting mechanism, the large-span beam mechanism, the servo mechanism and the angle support mechanism are all tightly connected to the foundation pit.

[0008] By adopting the above technical solution, the cable tension is adjusted by the tensioning motor and transmitted to the long-span beam, and the position of the beam is adjusted by the sliding saddle; at the same time, the servo mechanism adjusts the longitudinal and transverse hydraulic cylinders according to the real-time data of the pressure sensor and the horizontal sensor to ensure the stability of the support device. The buffer component effectively reduces the impact of external vibration and improves the seismic resistance of the system, so that the support device can maintain accurate support and adjustment under different working conditions. The support device can work efficiently and stably under various environmental and load conditions, ensuring the stability and safety of the long-span beam. At the same time, through precise tension adjustment and real-time monitoring, the long-term operation and seismic resistance of the system are guaranteed, and it has excellent load capacity and adjustment response speed.

[0009] Furthermore, the main support mechanism includes an H-shaped steel frame, an inner support rod assembly, a support frame, a connecting plate and a jack. The H-shaped steel frame is tightly connected to the inner support rod assembly, the H-shaped steel frame is tightly connected to the connecting plate, both ends of the H-shaped steel frame are tightly connected to the foundation pit, the support frame is located on both sides of the H-shaped steel frame, the support frame is tightly connected to the foundation pit, the jack is tightly connected to the H-shaped steel frame, and the jack is located at both ends of the H-shaped steel frame.

[0010] By adopting the above technical solution, the H-shaped steel frame serves as the skeleton of the support device, and forms a stable support structure with the inner support rod assembly through a fastening connection. The two ends of the H-shaped steel frame are fastened to the foundation pit to ensure the stability and anti-overturning ability of the entire support device in the foundation pit. The inner support rod assembly forms a lateral and longitudinal support force through a fastening connection with the H-shaped steel frame to ensure the strength and stability of the structure. The support frame is located on both sides of the H-shaped steel frame and is fastened to the foundation pit through a connecting plate to provide additional support force and enhance the stability of the overall structure. The jack is located at both ends of the H-shaped steel frame and is fastened to the H-shaped steel frame. It provides adjustable support force through hydraulic means and can be raised and lowered according to load requirements. In the workflow, the jack first adjusts the height of the H-shaped steel frame through the hydraulic system to adjust the stability of the entire support device. The support frame and the inner support rod assembly provide support force through a fastening connection, and the fastening connection between the H-shaped steel frame and the foundation pit ensures the fixation and anti-lateral displacement of the device. Under the action of load, the jack provides the necessary adjustment force, so that the H-shaped steel frame and the entire support device can be flexibly adjusted according to different working conditions, ensuring that the device bears the load in a stable state. The hydraulic jack accurately controls the lifting and lowering of the H-shaped steel frame to adjust the height of the device. At the same time, the structural design of the support frame and the inner support rod assembly provides a stable support force to ensure that the load borne by the system will not cause tilt or displacement. The stability and adjustability of the entire main support structure are achieved by the close cooperation of the H-shaped steel frame, support frame, jack and inner support rod assembly. The main support mechanism can provide stable support under different load and environmental conditions through precise hydraulic adjustment, enhance the overall bearing capacity of the structure, and can adjust the height as needed to ensure the dynamic adaptability and stability of the support system and prevent support instability caused by load changes.

[0011] Furthermore, the inner support rod assembly includes a scissors support rod, a hinged support rod, a rotating rod, a compression rod, a connecting plate, a sliding block, a first elastic member and a second elastic member. The hinged support rod and the sliding block are hinged, the sliding block and the support frame are slidably connected, the sliding block and the first elastic member are tightly connected, the first elastic member and the support frame are tightly connected, the scissors support rod and the H-shaped steel frame are hinged, the rotating rod and the second elastic member are tightly connected, the second elastic member and the compression rod are tightly connected, the compression rod and the rotating rod are slidingly connected, the compression rod and the support frame are rotatably connected, the support frame is provided with a sliding groove, the sliding block and the sliding groove are slidably connected, the connecting plate and the H-shaped steel frame are tightly connected, and the scissors support rod and the H-shaped steel frame are tightly connected.

[0012] By adopting the above technical solution, the hinged tension rod is connected to the sliding block by an articulation, and the sliding block cooperates with the support frame by a sliding connection, allowing the inner support rod assembly to produce a certain displacement under force. The sliding block is fastened to the first elastic member, and the first elastic member is fastened to the support frame to provide elastic support and maintain the stability of the support frame during force. The scissor tension rod is hingedly connected to the H-shaped steel frame to provide additional stabilizing force, making the entire main support structure more solid. The rotating rod is fastened to the second elastic member to control the rotation torque and ensure the stability of the inner support rod assembly during deformation. The second elastic member is fastened to the compression rod to provide appropriate compression force to ensure the stability of the structure under compression. The compression rod and the rotating rod are connected by sliding to form a rotation and compression compound action to achieve flexible force adjustment. The compression rod is rotatably connected to the support frame to ensure that the support frame can make appropriate adjustments when under force. A sliding groove is provided on the support frame, and the sliding block and the sliding groove are connected by sliding to further ensure the stability and flexibility of the inner support rod assembly. The connecting plate is fastened to the H-shaped steel frame, which increases the connection strength between the inner support rod assembly and the H-shaped steel frame. The scissor support rod is also fastened to the H-shaped steel frame, which enhances the overall rigidity and stability of the structure. When the load acts on the support device, the scissor support rod and the hinged support rod work together to adjust the shape of the inner support rod assembly through the hinge point and transfer the force to the H-shaped steel frame. At the same time, the sliding of the sliding block in the sliding groove realizes fine adjustment, and the elastic action of the first elastic member stabilizes the structure. The rotation rod and the second elastic member cooperate to adjust the torque to ensure that the support frame remains stable during compression and rotation. The sliding connection between the compression rod and the rotation rod ensures the adaptability and flexibility of the structure under complex loads. Finally, the entire inner support rod assembly is fastened to the H-shaped steel frame through the connecting plate to form a strong and flexible support system. Through the coordinated action of each component in the inner support rod assembly, the stability and adaptability of the inner support rod assembly can be achieved under different load conditions. The combination of the sliding block and the sliding slot allows the support frame to be fine-tuned, while the first and second elastic members provide the necessary elastic support to maintain stability under the action of different forces. The combination of the rotating rod and the compression rod enables the inner support rod assembly to flexibly respond to compression and rotation forces, thereby ensuring the reliability of the entire support device. The inner support rod assembly can stably support under dynamic loads and adapt to different deformation requirements. The design of elastic members and sliding connections allows flexible adjustment to ensure the stability, bearing capacity and seismic resistance of the structure, so that the entire support device can continue to operate effectively in a complex working environment, ensuring high precision and high reliability.

[0013] Furthermore, the H-shaped steel frame includes an end steel frame, a middle steel frame and a telescopic hydraulic cylinder, the end steel frame and the middle steel frame are slidably connected, the telescopic hydraulic cylinder and the middle steel frame are fastened, and the telescopic hydraulic cylinder and the end steel frame are transmission-connected.

[0014] By adopting the above technical solution, the end steel frame is connected to the middle steel frame through a sliding connection. This design allows the two to slide relative to each other, thereby allowing the structure to make necessary displacements or adjustments when subjected to force. The telescopic hydraulic cylinder is connected to the middle steel frame through a fastening connection and is connected to the end steel frame through a transmission connection. The setting of this hydraulic cylinder enables the end steel frame to be accurately adjusted longitudinally on the middle steel frame. Specifically, the hydraulic cylinder can control the lifting and lowering of the end steel frame, adjust the height and stability of the entire H-shaped steel frame, and thus realize the dynamic adjustment of the support device. In the workflow, when the height or position of the support device needs to be adjusted, the telescopic hydraulic cylinder is driven by hydraulic pressure to push the end steel frame to slide on the middle steel frame, thereby realizing vertical lifting or other necessary adjustments of the overall structure. Due to the sliding connection between the end steel frame and the middle steel frame, the force provided by the hydraulic cylinder will directly act on the end steel frame, and a smooth height adjustment will be achieved through the sliding mechanism. The control of the hydraulic system enables the entire H-shaped steel frame to flexibly respond and maintain the balance and stability of the structure when subjected to external loads. The telescopic hydraulic cylinder uses the boosting capacity of the hydraulic system to transmit force to the end steel frame through the transmission connection, so that it slides on the middle steel frame. The telescopic action of the hydraulic cylinder accurately controls the position change of the end steel frame, ensuring the uniform distribution and stability of force during the adjustment process. Due to the sliding connection design, the relative displacement of the end steel frame and the middle steel frame can be carried out smoothly, avoiding structural damage caused by excessive friction or jamming. Using the adjustment function of the telescopic hydraulic cylinder, the support device can flexibly adjust the height or position when the load changes, ensuring the stability and adaptability of the support system. This design improves the flexibility and seismic resistance of the support structure, and can operate stably under various working conditions, ensuring the efficiency and reliability of the system.

[0015] Furthermore, the large-span beam mechanism includes a sliding saddle, a buffer assembly, a pull rod, a cable, a fork ear, a web and a wedge seat. The sliding saddle is provided with three hinge holes. The buffer assembly and the sliding saddle are fastened together, the pull rod and the sliding saddle are hinged together, the cable and the sliding saddle are abutted for tensioning, the cable and the wedge seat are fastened together, the pull rod and the wedge seat are hinged together, the fork ear and the web are fastened together, the fork ear and the sliding saddle are hinged together, the web and the servo mechanism are fastened together, and the wedge seat and the servo mechanism are fastened together.

[0016] By adopting the above technical solution, three hinge holes are provided on the sliding saddle, which are used to connect the pull rod, the fork ear and the cable respectively. The buffer assembly is tightly connected to the sliding saddle to provide the necessary buffering and vibration suppression functions to reduce the impact of external impact on the long-span beam mechanism. The pull rod is connected to the sliding saddle by hinge, so that the pull rod can produce a certain angle change between the pull rod and the sliding saddle under the action of force, transmit force and adjust the position. At the same time, the cable is in contact with the sliding saddle for tensioning, and the tension is transmitted to the wedge seat, and stable fixation is achieved through a tightening connection. The pull rod and the wedge seat are hinged to allow flexible adjustment between the two. The fork ear is combined with the web through a tightening connection to ensure the stability of the structure. At the same time, the hinged design of the fork ear and the sliding saddle realizes the transmission and adjustment of force. The web is tightly connected to the servo mechanism, working together to provide lateral stability, and the wedge seat is tightly connected to the servo mechanism, and the entire long-span beam mechanism is precisely controlled by a hydraulic or electric adjustment controller. First, the cable transmits tension through the sliding saddle to ensure that the tension of the long-span beam is evenly distributed, and the shape of the beam is further adjusted. The pull rod bears the reaction force from the tension force through the hinged connection with the sliding saddle and the wedge seat, while the web bar cooperates to share and stabilize the structure through the connection between the fork ear and the sliding saddle. The buffer assembly plays a role when the load changes, reduces external vibration or impact, and protects the long-span beam from damage caused by instantaneous high loads. Through the control of the web bar and the wedge seat by the servo mechanism, the dynamic adjustment of the beam under different loads can be achieved to ensure the stable operation of the device under various working conditions. The cable is stretched by tension to drive the sliding saddle to move, thereby adjusting the position of the long-span beam and transmitting it to the wedge seat. The hinged connection between the pull rod and the wedge seat makes the force transmission more efficient, and the tight connection between the web bar and the servo mechanism makes the adjustment process more precise. When the load changes, the buffer assembly balances the instantaneous load by absorbing part of the impact force, ensuring that the entire long-span beam mechanism is always in a stable state. The effect achieved is that through the collaborative work of the above components, the long-span beam mechanism can ensure the stability, flexibility and efficient adjustment of the beam body when bearing complex loads. The effective combination of sliding saddle, buffer assembly and servo mechanism not only improves the seismic resistance, but also can accurately adjust the tension and position of the large-span beam, ensure stable operation under long-term high load, extend the service life of the device, and meet the needs of various working conditions.

[0017] Furthermore, the buffer assembly includes a buffer plate, a non-Newtonian fluid box and a third elastic member, the non-Newtonian fluid box and the sliding saddle are fastened together, the buffer plate and the non-Newtonian fluid box are slidingly connected, the third elastic member and the non-Newtonian fluid box are fastened together, and the third elastic member and the buffer plate are fastened together.

[0018] By adopting the above technical solution, the impact assembly is composed of a buffer plate, a non-Newtonian fluid box and a third elastic member, which is designed to effectively alleviate external impact force and vibration and protect the large-span beam mechanism from damage caused by instantaneous high load. The non-Newtonian fluid box is tightly connected to the sliding saddle. As the core component of the buffer assembly, the non-Newtonian fluid can change the flow characteristics according to the pressure change. Therefore, when the external impact or vibration is transmitted to the sliding saddle, the fluid in the non-Newtonian fluid box can quickly adjust the flow state and effectively absorb the impact energy. The buffer plate is combined with the non-Newtonian fluid box through a sliding connection, allowing the buffer plate to make a small displacement between the non-Newtonian fluid box under the action of external force, thereby enhancing the impact absorption capacity. The third elastic member is tightly connected to the non-Newtonian fluid box and the buffer plate, respectively, to provide additional elastic support, further improve the buffering effect, and ensure that the entire system can react smoothly and return to its original position when subjected to force. In the workflow, when external impact force or vibration acts on the large-span beam mechanism, the buffer plate and the non-Newtonian fluid box work together. The non-Newtonian fluid box absorbs impact energy and relieves instantaneous high loads through the flow characteristics of the fluid, and the buffer plate moves according to the size of the impact, thereby further reducing vibration transmission. The third elastic member provides buffering force under the action of the load through its elastic characteristics, ensuring that the system can quickly return to its original position and operate stably after the impact ends. The entire buffer assembly can effectively disperse external impact energy and reduce damage to the large-span beam structure. The working principle is that the fluid in the non-Newtonian fluid box has nonlinear flow characteristics. When subjected to external pressure, the viscosity of the fluid increases, thereby effectively slowing down the transmission of external force. The sliding connection between the buffer plate and the non-Newtonian fluid box enables the buffer plate to move smoothly under fluid pressure, further absorbing and dispersing impact energy. The third elastic member plays a role in recovery and elastic support, quickly restoring the system to its initial state after the external force is released, and avoiding the continuous impact of vibration on the device. The effect achieved is that through the fluid characteristics of the non-Newtonian fluid box and the synergistic effect of the buffer plate and the third elastic member, the buffer assembly can efficiently absorb and disperse external impact and vibration, greatly improving the impact resistance and stability of the large-span beam mechanism. Even under extreme working conditions, the entire support device can remain stable to prevent structural damage or position displacement caused by impact, thereby ensuring the long-term stable operation and reliability of the system.

[0019] Furthermore, the string tensioning mechanism includes a string tensioning motor, a winding block and a tension sensor. The string tensioning motor is tightly connected to the sliding saddle, the string tensioning motor is transmission-connected to the winding block, the tension sensor is tightly connected to the winding block, and the winding block abuts against the cable.

[0020] By adopting the above technical solution, the string tensioning mechanism is composed of a string tensioning motor, a winding block and a tension sensor, which is designed to accurately control and adjust the tension of the cable. The string tensioning motor is combined with the sliding saddle through a fastening connection, and as a driving source, it drives the winding block to rotate by electric means. The winding block is connected to the string tensioning motor through a transmission connection. After receiving the driving force of the motor, it changes the tension of the cable by rotation to ensure that the tension of the cable is accurately controlled. The tension sensor and the winding block are fixed together by a fastening connection, monitor the tension of the cable in real time, and transmit the feedback signal to the control system to ensure that the tension is always kept within a predetermined range. The winding block contacts the cable and abuts through tension. The tension state of the cable is controlled by the adjustment of the winding block to ensure that the system remains stable during operation. In the work process, after the string tensioning motor is started, the winding block is driven to rotate so that the cable generates the required tension. The rotation of the winding block drives the cable to be tensioned, and the tension sensor monitors the tension of the cable in real time and feeds back the data to the control system. The control system adjusts the running speed of the motor according to the tension value fed back by the sensor to ensure that the tension of the cable always remains within the set value range. Through this precise adjustment, the string tensioning mechanism can adjust the tension in time according to the actual load demand, thereby ensuring the stability of the large-span beam mechanism. The working principle is that the string tensioning motor drives the winding block to rotate, changes the relative position between the winding block and the cable, and thus adjusts the tension of the cable. The tension sensor monitors the actual tension of the cable and converts it into an electrical signal to transmit to the control system. The control system adjusts the working state of the motor in real time according to the feedback signal. The change in the speed of the motor will directly affect the rotation rate of the winding block, thereby accurately controlling the tension of the cable and ensuring smooth operation under load conditions. The effect achieved is that through this precise adjustment mechanism, the string tensioning mechanism can adjust the tension of the cable in real time when the load changes, ensuring the stability and safety of the structure. The feedback mechanism of the tension sensor enables the system to automatically adjust to ensure that the tension remains within the ideal range, avoid excessive tension or relaxation, and improve the overall performance and reliability of the large-span beam mechanism.

[0021] Furthermore, the servo mechanism includes a longitudinal hydraulic cylinder, a transverse hydraulic cylinder, a locking assembly and a mounting seat. The longitudinal hydraulic cylinder and the locking assembly are transmission-connected, the abdominal rod and the locking assembly are transmission-connected, the longitudinal hydraulic cylinder and the foundation pit are fastened, the transverse hydraulic cylinder and the wedge-shaped seat are transmission-connected, the transverse hydraulic cylinder and the mounting seat are fastened, the locking assembly includes a triangular block, a fourth elastic member, an electromagnetic block, an inner frame and an outer frame, the triangular block and the inner frame are slidingly connected, the triangular block and the outer frame are abutted, the triangular block and the fourth elastic member are fastened, the triangular block and the outer frame are abutted, a locking groove is provided on the outer frame, the outer frame and the abdominal rod are fastened, the inner frame and the longitudinal hydraulic cylinder are fastened, the triangular block and the electromagnetic block are magnetically repelled, and the electromagnetic block and the inner frame are fastened.

[0022] By adopting the above technical solution, the servo mechanism is composed of a longitudinal hydraulic cylinder, a transverse hydraulic cylinder, a locking assembly and a mounting seat, which is designed to accurately control the longitudinal and transverse movement of the long-span beam mechanism and ensure the stability of the position of each part through a locking mechanism. The longitudinal hydraulic cylinder and the locking assembly are combined through a transmission connection, so that the action of the hydraulic cylinder can directly affect the locking assembly and control the longitudinal movement and positioning of the system. The longitudinal hydraulic cylinder is connected to the foundation pit through a fastening connection to provide the necessary longitudinal driving force for the system. The transverse hydraulic cylinder and the wedge seat realize the lateral adjustment function through a transmission connection, and are connected to the mounting seat through a fastening connection to ensure the stability of the hydraulic cylinder when performing lateral adjustment. The locking assembly includes a triangular block, a fourth elastic member, an electromagnetic block, an inner frame and an outer frame, wherein the triangular block and the inner frame are matched through a sliding connection to ensure the precise positioning of the locking assembly during operation. The triangular block and the outer frame ensure the close fit of the structure through abutment, and the triangular block and the fourth elastic member maintain a certain elastic support through a fastening connection to prevent excessive displacement. A locking groove is provided on the outer frame to ensure that the locking assembly can be stably fixed in the required position, and is connected to the web through a fastening connection to enhance the overall mechanical stability. The inner frame is tightly connected to the longitudinal hydraulic cylinder to ensure that the longitudinal drive of the hydraulic cylinder can accurately cooperate with the control mechanism of the locking component. The triangular block and the electromagnetic block are transmitted through the action of magnetic repulsion. The electromagnetic block is tightly connected to the inner frame and the locking action is accurately controlled by the action of electromagnetic force. In the work process, the longitudinal hydraulic cylinder and the transverse hydraulic cylinder realize the precise adjustment of the large-span beam mechanism through hydraulic drive. The longitudinal hydraulic cylinder adjusts the longitudinal position of the overall structure, and the transverse hydraulic cylinder is responsible for transverse fine-tuning. The locking component plays a role after the hydraulic cylinder is adjusted, and the structure is fixed in the required position through the cooperation of the triangular block and the outer frame. The electromagnetic block triggers the locking action through the magnetic repulsion mechanism, tightens the structure, and ensures the stability after adjustment. The fourth elastic member provides elastic support to further enhance the locking effect and avoid loosening caused by vibration or external force. The working principle is that when the system needs to adjust the position, the longitudinal hydraulic cylinder and the transverse hydraulic cylinder adjust the longitudinal and transverse positions of the structure respectively by controlling the hydraulic drive. After the adjustment is completed, the electromagnetic block works with the triangular block through the action of magnetic repulsion to ensure that the locking component is accurately positioned and the position of the entire system is fixed through the tight connection of the inner frame and the outer frame. The cooperation between the fourth elastic member and the triangular block ensures the elastic support of the locking system, enhances the locking stability and prevents displacement or loosening. The design of the locking groove on the outer frame provides additional safety, ensuring that the structure always remains in a locked state under load or vibration. The effect achieved is that the servo mechanism can achieve high-precision adjustment and locking of large-span beam structures through precise hydraulic control and electromagnetic locking technology, ensuring that the structure is always in a stable state under various working conditions. The dynamic adjustment of the hydraulic cylinder combined with the static locking of the locking assembly not only improves the adjustment ability of the entire device, but also effectively reduces the impact of vibration or load changes on the structure, improving the safety and reliability of the system.

[0023] Furthermore, the angle support mechanism includes an angle connector, an angle support steel frame and an angle connector rod. The angle connector and the mounting seat are fastened together, the angle connector rod and the mounting seat are fastened together, the angle connector and the angle support steel frame are fastened together, and the angle support steel frame is a double-layer arrangement.

[0024] By adopting the above technical solution, the angle support mechanism is composed of an angle joint, an angle support steel frame and an angle connecting rod, and is designed to enhance the stability and bearing capacity of the long-span beam structure. The angle joint and the mounting seat are fixed to the structure through a fastening connection to ensure the firm installation of the angle support assembly. The angle connecting rod is also connected to the mounting seat through a fastening connection, and works with the angle joint and the angle support steel frame to form a stable support structure. The angle joint and the angle support steel frame are firmly connected through a fastening connection to ensure the transmission and stability of force. In particular, the angle support steel frame is a double-layer setting, and by increasing the number of layers of the steel frame, the strength and stability of the angle support structure are improved to ensure that it can effectively withstand external forces from all directions under heavy loads. In the work process, the angle support mechanism provides additional support force at the key position of the long-span beam structure through the joint action of the angle joint, the angle support steel frame and the angle connecting rod. The angle joint and the angle support steel frame form a high-strength support frame through a firm connection structure. When the structure is displaced or subjected to external forces, the angle connecting rod and the angle support steel frame can quickly share the external force to ensure the stability of the beam body. The double-layer angle support steel frame can withstand greater loads, improve support capacity, and avoid the weak links that may be caused by a single-layer structure. The working principle is that the angle joint effectively transmits force to the angle support steel frame and the angle connecting rod through a fastening connection with the mounting seat. When the angle connecting rod is under load, it will distribute the external force to the angle support steel frame through the connection. Under the support of the double-layer steel frame structure, the entire angle support mechanism can provide higher stability and stronger bearing capacity. The double-layer angle support steel frame increases the bearing capacity by increasing the structural strength, allowing the system to adapt to greater loads or sudden pressures and avoid the risk of structural instability or damage. The effect achieved is that the angle support mechanism can effectively enhance the stability and bearing capacity of the structure through precision design and the application of high-strength materials. The setting of the double-layer angle support steel frame enables the structure to share more pressure when facing high loads, preventing local deformation or instability caused by force concentration, thereby significantly improving the safety and durability of the large-span beam structure.

[0025] Furthermore, the detection mechanism includes a pressure sensor and a level sensor, the pressure sensor is fastened to the H-shaped steel frame, the pressure sensor is located at the fixing position of the foundation pit and the H-shaped steel frame, and the level sensor is fastened to the support frame.

[0026] By adopting the above technical solution, the detection mechanism is composed of a pressure sensor and a horizontal sensor, which is designed to monitor the working state of the long-span beam structure in real time during use to ensure its stability and safety. The pressure sensor is fixed to the H-shaped steel frame by a fastening connection and installed at the fixing point of the foundation pit and the H-shaped steel frame. It is responsible for monitoring the pressure changes on the long-span beam structure to ensure that the structure does not exceed the safe load-bearing range during operation. The horizontal sensor is connected to the support frame by a fastening connection to monitor the horizontal state of the structure in real time to ensure the balance of the support frame under various loads. In the workflow, the pressure sensor measures the pressure on the structure in real time and transmits the data to the control system to feedback whether the structure is in a safe working state. If the measured pressure exceeds the set safety threshold, the system will automatically issue an alarm or take adjustment measures, such as reducing the load or adjusting the state of the support device. At the same time, the horizontal sensor monitors the horizontal position change of the support frame to ensure that the support frame does not tilt or deform under the load, and promptly feedbacks data to the control system to help determine whether the structure is tilted or unstable. If the tilt is found to exceed the allowable range, the system will start the adjustment program to rebalance the structure. The working principle is that the pressure sensor senses the pressure changes on the structure, uses the sensing principle such as strain gauge, converts the pressure into an electrical signal, and transmits it to the control system for processing and analysis. The horizontal sensor uses the principle of laser, electronic level or tilt sensor to measure the horizontal angle of the support frame in real time, converts the data into a signal and feeds it back to the control system. The control system makes judgments based on the data of these sensors, automatically adjusts the operating status of the structure, and ensures that the system is always in a safe and stable working environment. The effect achieved is that the detection mechanism can detect the potential risks of the structure in real time by accurately monitoring the pressure and horizontal status, and avoid safety accidents caused by overload or imbalance. The high-precision monitoring of the pressure sensor ensures that the structure is always within a reasonable load-bearing range and avoids structural damage caused by excessive pressure. The horizontal sensor detects the horizontal state of the support frame in real time to prevent functional failure caused by tilt or instability, and ensures the reliability and safety of the large-span beam structure under various working conditions.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the main support mechanism and the long-span beam mechanism are connected by fastening, and jointly bear the heavy task of supporting the long-span beam. The tension adjustment of the long-span beam controls the tension of the cable through the tensioning motor, and the tension of the cable further affects the position adjustment of the long-span beam. The sliding saddle is used to adjust the position of the beam to ensure the stability and stability of the long-span beam under the load. The combined design of the servo mechanism and the hydraulic cylinder enables the support device to adjust the longitudinal and lateral support forces in real time according to the change of the load to ensure the stability of the structure. The servo mechanism accurately adjusts the position of the hydraulic cylinder by real-time monitoring the data of the pressure sensor and the level sensor to ensure the smooth operation of the entire support system. The buffer component adopts the design of the non-Newtonian fluid box and the third elastic member, which can effectively absorb external shocks and vibrations and reduce the influence of external vibrations on the long-span beam structure. The non-Newtonian fluid box can change the flow characteristics according to the intensity of the external shock, realize the rapid absorption of the impact energy, and relieve the instantaneous load. The cooperation of the tensioning motor, the winding block and the tension sensor realizes the precise adjustment of the cable tension. Through the real-time feedback of tension data, the system can adjust the speed of the motor in time to ensure that the cable tension remains within the set range, ensuring the stability and safety of the long-span beam. The longitudinal hydraulic cylinder, transverse hydraulic cylinder, locking assembly, etc. in the servo mechanism are used together to accurately control the longitudinal and transverse positions of the long-span beam, and ensure the stability of the position through the electromagnetic locking mechanism. The locking assembly combines electromagnetic force and mechanical locking to ensure that the structure can be stably fixed after the adjustment is completed to prevent displacement caused by vibration or load changes. The reinforced support of the angle support mechanism, the angle support mechanism composed of angle joints, angle support steel frames and angle connecting rods, provides additional support and enhances the stability of the long-span beam structure. In particular, the double-layer design of the angle support steel frame can effectively increase the strength of the angle support structure, provide sufficient support under high load conditions, and prevent the long-span beam from tilting or displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the main support structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the inner support rod assembly of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the rotating rod of the present invention;

[0032] Figure 5 This is a schematic diagram of the sliding groove structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the H-shaped steel frame structure of the present invention;

[0034] Figure 7This is a schematic diagram of the structure of the large-span beam mechanism of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the buffer assembly of the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the servo mechanism of the present invention;

[0037] Fig.10 It is a schematic diagram of the locking assembly structure of the present invention.

[0038] In the figure: 1, main support mechanism; 11, H-shaped steel frame; 111, end steel frame; 112, middle steel frame; 113, telescopic hydraulic cylinder; 12, inner support rod assembly; 121, scissor pull support rod; 122, hinged pull support rod; 123, rotating rod; 124, compression rod; 125, connecting support plate; 126, sliding block; 127, first elastic member; 128, second elastic member; 13, support frame; 131, sliding groove; 14, connecting plate; 15, jack; 2, large span beam mechanism; 21, sliding saddle; 211, hinged hole; 22, buffer assembly; 221, buffer plate; 222, non-Newtonian fluid box; 223, third elastic member 1. Tensioning mechanism; 2. Tensioning motor; 3. Winding block; 4. Tensioning force sensor; 5. Servo mechanism; 6. Longitudinal hydraulic cylinder; 7. Transverse hydraulic cylinder; 8. Locking assembly; 9. Triangular block; 10. Fourth elastic member; 11. Electromagnetic block; 12. Inner frame; 13. Outer frame; 14. Locking groove; 15. Mounting seat; 16. Angle support mechanism; 17. Angle joint; 18. Angle support steel frame; 19. Angle connecting rod; 20. Detection mechanism; 21. Pressure sensor; 22. Level sensor; 23. Tensioning mechanism; 24. Pull cable; 25. Fork ear; 26. Belly bar; 27. Wedge seat; 3. Tensioning mechanism; 31. Tensioning motor; 32. Winding block; 33. Tension sensor; 4. Servo mechanism; 41. Longitudinal hydraulic cylinder; 42. Transverse hydraulic cylinder; 43. Locking assembly; 431. Triangular block; 432. Fourth elastic member; 433. Electromagnetic block; 434. Inner frame; 435. Outer frame; 4351. Locking groove; 44. Mounting seat; 5. Angle support mechanism; 51. Angle joint; 52. Angle support steel frame; 53. Angle connecting rod; 6. Detection mechanism; 61. Pressure sensor; 62. Level sensor; 7. Foundation pit. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1 - Fig.10 As shown, the present invention provides a technical solution of a chord-type double truss beam support device with feedback function based on structural steel:

[0041] The supporting device includes a main supporting mechanism 1, a large-span beam mechanism 2, a string tensioning mechanism 3, a servo mechanism 4, an angle support mechanism 5, a detection mechanism 6 and a foundation pit 7. The main supporting mechanism 1 and the large-span beam mechanism 2 are fastened together, the string tensioning mechanism 3 and the large-span beam mechanism 2 are fastened together, the servo mechanism 4 and the string tensioning mechanism 3 are transmission-connected, the detection mechanism 6 and the servo mechanism 4 are electrically connected, and the main supporting mechanism 1, the large-span beam mechanism 2, the servo mechanism 4 and the angle support mechanism 5 are all fastened together with the foundation pit 7.

[0042] By adopting the above technical solution, the tension of the cable 24 is adjusted by the tensioning motor 31 and transmitted to the long-span beam, and the position of the beam is adjusted by the sliding saddle 21; at the same time, the servo mechanism 4 adjusts the longitudinal and transverse hydraulic cylinders 42 according to the real-time data of the pressure sensor 61 and the level sensor 62 to ensure the stability of the support device. The buffer component 22 effectively reduces the impact of external vibration and improves the seismic resistance of the system, so that the support device can maintain accurate support and adjustment under different working conditions. The support device can work efficiently and stably under various environmental and load conditions, ensuring the stability and safety of the long-span beam. At the same time, through precise tension adjustment and real-time monitoring, the long-term operation and seismic resistance of the system are guaranteed, and it has excellent load capacity and adjustment response speed.

[0043] Furthermore, the main support mechanism 1 includes an H-shaped steel frame 11, an inner support rod assembly 12, a support frame 13, a connecting plate 14 and a jack 15. The H-shaped steel frame 11 and the inner support rod assembly 12 are fastened together, the H-shaped steel frame 11 and the connecting plate 14 are fastened together, both ends of the H-shaped steel frame 11 are fastened together with the foundation pit 7, the support frame 13 is located on both sides of the H-shaped steel frame 11, the support frame 13 and the foundation pit 7 are fastened together, the jack 15 and the H-shaped steel frame 11 are fastened together, and the jack 15 is located at both ends of the H-shaped steel frame 11.

[0044] By adopting the above technical solution, the H-shaped steel frame 11 serves as the skeleton of the support device, and is fastened to the inner support rod assembly 12 to form a stable support structure. The two ends of the H-shaped steel frame 11 are fastened to the foundation pit 7 to ensure the stability and anti-overturning ability of the entire support device in the foundation pit 7. The inner support rod assembly 12 is fastened to the H-shaped steel frame 11 to form a lateral and longitudinal support force to ensure the strength and stability of the structure. The support frame 13 is located on both sides of the H-shaped steel frame 11 and is fastened to the foundation pit 7 through the connecting plate 14 to provide additional support force and enhance the stability of the overall structure. The jack 15 is located at both ends of the H-shaped steel frame 11 and is fastened to the H-shaped steel frame 11. It provides adjustable support force by hydraulic means and can be raised and lowered according to load requirements. In the workflow, the jack 15 first adjusts the height of the H-shaped steel frame 11 through the hydraulic system to adjust the stability of the entire support device. The support frame 13 and the inner support rod assembly 12 provide support force through a fastening connection, and the fastening connection between the H-shaped steel frame 11 and the foundation pit 7 ensures the fixation and anti-lateral displacement of the device. Under the action of the load, the jack 15 provides the necessary adjustment force, so that the H-shaped steel frame 11 and the entire support device can be flexibly adjusted according to different working conditions to ensure that the device bears the load in a stable state. The hydraulic jack 15 accurately controls the lifting and lowering of the H-shaped steel frame 11 to adjust the height of the device. At the same time, the structural design of the support frame 13 and the inner support rod assembly 12 provides a stable support force to ensure that the load borne by the system will not cause tilting or displacement. The stability and adjustability of the entire main support structure are achieved by the close cooperation of the H-shaped steel frame 11, the support frame 13, the jack 15 and the inner support rod assembly 12. The main support mechanism 1 can provide stable support under different load and environmental conditions through precise hydraulic adjustment, enhance the overall bearing capacity of the structure, and can be adjusted in height as needed to ensure the dynamic adaptability and stability of the support system and prevent the problem of support instability caused by load changes.

[0045] Furthermore, the inner support rod assembly 12 includes a scissor support rod 121, a hinged support rod 122, a rotating rod 123, a compression rod 124, a connecting plate 125, a sliding block 126, a first elastic member 127 and a second elastic member 128. The hinged support rod 122 and the sliding block 126 are hinged, the sliding block 126 and the support frame 13 are slidably connected, the sliding block 126 and the first elastic member 127 are fastened, the first elastic member 127 and the support frame 13 are fastened, and the scissor support rod 121 is connected to the first elastic member 127. 21 is hinged to the H-shaped steel frame 11, the rotating rod 123 and the second elastic member 128 are fastened together, the second elastic member 128 and the compression rod 124 are fastened together, the compression rod 124 and the rotating rod 123 are slidably connected, the compression rod 124 and the support frame 13 are rotatably connected, the support frame 13 is provided with a sliding groove 131, the sliding block 126 and the sliding groove 131 are slidably connected, the connecting plate 125 and the H-shaped steel frame 11 are fastened together, and the scissors pull support rod 121 and the H-shaped steel frame 11 are fastened together.

[0046] By adopting the above technical solution, the hinged tension rod 122 is hingedly connected to the sliding block 126, and the sliding block 126 cooperates with the support frame 13 through a sliding connection, allowing the inner support rod assembly 12 to produce a certain displacement under force. The sliding block 126 is tightly connected to the first elastic member 127, and the first elastic member 127 is tightly connected to the support frame 13 to provide elastic support and maintain the stability of the support frame 13 during force. The scissors tension rod 121 is hingedly connected to the H-shaped steel frame 11 to provide additional stabilizing force, making the entire main support structure more solid. The rotating rod 123 controls the rotational torque by being tightly connected to the second elastic member 128 to ensure the stability of the inner support rod assembly 12 during deformation. The second elastic member 128 and the compression rod 124 are tightly connected to provide appropriate compression force to ensure the stability of the structure under compression. The compression rod 124 and the rotating rod 123 are connected by sliding to form a rotation and compression compound action to achieve flexible force adjustment. The compression rod 124 is rotatably connected to the support frame 13 to ensure that the support frame 13 can make appropriate adjustments when subjected to force. A sliding groove 131 is provided on the support frame 13, and the sliding block 126 is connected to the sliding groove 131 by sliding to further ensure the stability and flexibility of the inner support rod assembly 12. The connecting support plate 125 is fastened to the H-shaped steel frame 11 to increase the connection strength between the inner support rod assembly 12 and the H-shaped steel frame 11. The scissor pull support rod 121 is also fastened to the H-shaped steel frame 11 to enhance the overall rigidity and stability of the structure. When the load acts on the support device, the scissor support rod 121 and the hinged support rod 122 work together to adjust the shape of the inner support rod assembly 12 through the hinge point, and transfer the force to the H-shaped steel frame 11. At the same time, the sliding block 126 slides in the sliding groove 131 to achieve fine adjustment, and cooperates with the elastic action of the first elastic member 127 to stabilize the structure. The rotation rod 123 and the second elastic member 128 cooperate to adjust the torque to ensure that the support frame 13 remains stable during compression and rotation. The sliding connection between the compression rod 124 and the rotation rod 123 ensures the adaptability and flexibility of the structure under complex loads. Finally, the entire inner support rod assembly 12 is fastened to the H-shaped steel frame 11 through the connecting plate 125 to form a strong and flexible support system. Through the coordinated action of each component in the inner support rod assembly 12, the stability and adaptability of the inner support rod assembly 12 are achieved under different load conditions. The cooperation of the sliding block 126 and the sliding slot 131 allows the support frame 13 to be fine-tuned, and the first and second elastic members 128 provide the necessary elastic support to maintain stability under the action of different forces. The combination of the rotating rod 123 and the compression rod 124 enables the inner support rod assembly 12 to flexibly respond to compression and rotation forces, thereby ensuring the reliability of the entire support device.The inner support rod assembly 12 can stably support and adapt to different deformation requirements under dynamic loads, and can be flexibly adjusted through the design of elastic parts and sliding connections to ensure the stability, bearing capacity and seismic resistance of the structure, so that the entire support device can continue to operate effectively in a complex working environment, ensuring high precision and high reliability.

[0047] Furthermore, the H-shaped steel frame 11 includes an end steel frame 111, a middle steel frame 112 and a telescopic hydraulic cylinder 113. The end steel frame 111 and the middle steel frame 112 are slidably connected, the telescopic hydraulic cylinder 113 and the middle steel frame 112 are fastened, and the telescopic hydraulic cylinder 113 and the end steel frame 111 are transmission-connected.

[0048] By adopting the above technical solution, the end steel frame 111 is connected to the middle steel frame 112 through a sliding connection. This design allows the two to slide relative to each other, thereby allowing the structure to make necessary displacements or adjustments when subjected to force. The telescopic hydraulic cylinder 113 is connected to the middle steel frame 112 through a fastening connection, and is connected to the end steel frame 111 through a transmission connection. The setting of this hydraulic cylinder enables the end steel frame 111 to be accurately adjusted longitudinally on the middle steel frame 112. Specifically, the hydraulic cylinder can control the lifting and lowering of the end steel frame 111, adjust the height and stability of the entire H-shaped steel frame 11, and thus realize the dynamic adjustment of the support device. In the workflow, when the height or position of the support device needs to be adjusted, the telescopic hydraulic cylinder 113 is driven by hydraulic pressure to push the end steel frame 111 to slide on the middle steel frame 112, thereby realizing the vertical lifting or other necessary adjustments of the overall structure. Due to the sliding connection between the end steel frame 111 and the middle steel frame 112, the force provided by the hydraulic cylinder will directly act on the end steel frame 111, and a smooth height adjustment is achieved through the sliding mechanism. The control of the hydraulic system enables the entire H-shaped steel frame 11 to flexibly respond and maintain the balance and stability of the structure when subjected to external loads. The telescopic hydraulic cylinder 113 utilizes the boosting capacity of the hydraulic system to transmit force to the end steel frame 111 through a transmission connection, allowing it to slide on the middle steel frame 112. The telescopic action of the hydraulic cylinder accurately controls the position change of the end steel frame 111 to ensure the uniform distribution and stability of force during the adjustment process. Due to the sliding connection design, the relative displacement of the end steel frame 111 and the middle steel frame 112 can be carried out smoothly, avoiding structural damage caused by excessive friction or jamming. Utilizing the adjustment function of the telescopic hydraulic cylinder 113, the support device can flexibly adjust the height or position when the load changes, ensuring the stability and adaptability of the support system. This design improves the flexibility and seismic resistance of the support structure, and can operate stably under various working conditions, ensuring the efficiency and reliability of the system.

[0049] Furthermore, the large-span beam mechanism 2 includes a sliding saddle 21, a buffer assembly 22, a pull rod 23, a cable 24, a fork ear 25, a web 26 and a wedge seat 27. The sliding saddle 21 is provided with a hinge hole 211, and there are three hinge holes 211. The buffer assembly 22 and the sliding saddle 21 are fastened together, the pull rod 23 and the sliding saddle 21 are hinged together, the cable 24 and the sliding saddle 21 are abutted for tensioning, the cable 24 and the wedge seat 27 are fastened together, the pull rod 23 and the wedge seat 27 are hinged together, the fork ear 25 and the web 26 are fastened together, the fork ear 25 and the sliding saddle 21 are hinged together, the web 26 and the servo mechanism 4 are fastened together, and the wedge seat 27 and the servo mechanism 4 are fastened together.

[0050] By adopting the above technical solution, three hinge holes 211 are provided on the sliding saddle 21, which are respectively used to connect the pull rod 23, the fork ear 25 and the cable 24. The buffer assembly 22 is tightly connected to the sliding saddle 21 to provide necessary buffering and vibration suppression functions to reduce the impact of external shocks on the large-span beam mechanism 2. The pull rod 23 is connected to the sliding saddle 21 by hinges, so that the pull rod 23 can produce a certain angle change with the sliding saddle 21 under the action of force, transmit force and adjust the position. At the same time, the cable 24 is in contact with the sliding saddle 21 for tensioning, and transmits the tension to the wedge seat 27, and is stably fixed by a fastening connection. The pull rod 23 and the wedge seat 27 are hinged to allow flexible adjustment between the two. The fork ear 25 is combined with the web 26 by a fastening connection to ensure the stability of the structure. At the same time, the hinged design of the fork ear 25 and the sliding saddle 21 realizes the transmission and adjustment of force. The web bar 26 is tightly connected to the servo mechanism 4, and works together to provide lateral stability. The wedge seat 27 is tightly connected to the servo mechanism 4, and the entire long-span beam mechanism 2 is precisely controlled by a hydraulic or electric adjustment controller. First, the cable 24 transmits tension through the sliding saddle 21 to ensure that the tension of the long-span beam is evenly distributed, and further adjusts the shape of the beam. The pull rod 23 is hingedly connected to the sliding saddle 21 and the wedge seat 27 to withstand the reaction force from the tension force. At the same time, the web bar 26 is connected to the sliding saddle 21 through the fork ear 25 to share and stabilize the structure. The buffer component 22 plays a role when the load changes, reduces external vibration or impact, and protects the long-span beam from damage caused by instantaneous high loads. Through the control of the web bar 26 and the wedge seat 27 by the servo mechanism 4, dynamic adjustment of the beam body under different loads can be achieved, ensuring that the device works stably under various working conditions. The cable 24 is stretched by tension, drives the sliding saddle 21 to move, and then adjusts the position of the long-span beam and transmits it to the wedge seat 27. The hinged connection between the pull rod 23 and the wedge-shaped seat 27 makes the force transmission more efficient, and the tight connection between the web rod 26 and the servo mechanism 4 makes the adjustment process more precise. When the load changes, the buffer assembly 22 balances the instantaneous load by absorbing part of the impact force, ensuring that the entire long-span beam mechanism 2 is always in a stable state. The effect achieved is that, through the coordinated work of the above-mentioned components, the long-span beam mechanism 2 can ensure the stability, flexibility and efficient adjustment of the beam body when bearing complex loads. The effective combination of the sliding saddle 21, the buffer assembly 22 and the servo mechanism 4 not only improves the seismic resistance, but also can accurately adjust the tension and position of the long-span beam, ensuring stable operation under long-term high loads, extending the service life of the device, and meeting the needs of various working conditions.

[0051] Furthermore, the buffer assembly 22 includes a buffer plate 221, a non-Newtonian fluid box 222 and a third elastic member 223; the non-Newtonian fluid box 222 and the sliding saddle 21 are fastened together; the buffer plate 221 and the non-Newtonian fluid box 222 are slidingly connected; the third elastic member 223 and the non-Newtonian fluid box 222 are fastened together; and the third elastic member 223 and the buffer plate 221 are fastened together.

[0052] By adopting the above technical solution, the impact assembly is composed of a buffer plate 221, a non-Newtonian fluid box 222 and a third elastic member 223, which is designed to effectively alleviate external impact force and vibration and protect the large-span beam mechanism 2 from damage caused by instantaneous high load. The non-Newtonian fluid box 222 is tightly connected to the sliding saddle 21. As the core component of the buffer assembly 22, the non-Newtonian fluid can change the flow characteristics according to the pressure change. Therefore, when the external impact or vibration is transmitted to the sliding saddle 21, the fluid in the non-Newtonian fluid box 222 can quickly adjust the flow state and effectively absorb the impact energy. The buffer plate 221 is combined with the non-Newtonian fluid box 222 through a sliding connection, allowing the buffer plate 221 to be slightly displaced between the non-Newtonian fluid box 222 under the action of external force, thereby enhancing the impact absorption capacity. The third elastic member 223 is tightly connected to the non-Newtonian fluid box 222 and the buffer plate 221, respectively, to provide additional elastic support, further improve the buffering effect, and ensure that the entire system can react smoothly and return to its original position when subjected to force. In the working process, when external impact force or vibration acts on the long-span beam mechanism 2, the buffer plate 221 and the non-Newtonian fluid box 222 work together. The non-Newtonian fluid box 222 absorbs the impact energy and relieves the instantaneous high load through the flow characteristics of the fluid, and the buffer plate 221 is displaced according to the size of the impact, thereby further reducing the vibration transmission. The third elastic member 223 provides a buffer force under the load through its elastic characteristics, ensuring that the system can quickly return to its original position and operate stably after the impact ends. The entire buffer assembly 22 can effectively disperse the external impact energy and reduce the damage to the long-span beam structure. The working principle is that the fluid in the non-Newtonian fluid box 222 has nonlinear flow characteristics. When subjected to external pressure, the viscosity of the fluid increases, thereby effectively slowing down the transmission of external force. The sliding connection between the buffer plate 221 and the non-Newtonian fluid box 222 enables the buffer plate 221 to move smoothly under the fluid pressure, further absorbing and dispersing the impact energy. The third elastic member 223 plays a role in recovery and elastic support, quickly restoring the initial state of the system after the external force is released, and avoiding the continuous impact of vibration on the device. The effect achieved is that, through the fluid characteristics of the non-Newtonian fluid box 222 and the synergistic effect of the buffer plate 221 and the third elastic member 223, the buffer assembly 22 can efficiently absorb and disperse external shocks and vibrations, greatly improving the shock resistance and stability of the long-span beam mechanism 2. Even under extreme working conditions, the entire support device can remain stable, preventing structural damage or positional displacement caused by impact, thereby ensuring the long-term stable operation and reliability of the system.

[0053] Furthermore, the string tensioning mechanism 3 includes a string tensioning motor 31, a winding block 32 and a tension sensor 33. The string tensioning motor 31 is fastened to the sliding saddle 21, the string tensioning motor 31 is transmission-connected to the winding block 32, the tension sensor 33 is fastened to the winding block 32, and the winding block 32 is in contact with the cable 24.

[0054] By adopting the above technical solution, the string tensioning mechanism 3 is composed of a string tensioning motor 31, a winding block 32 and a tension sensor 33, which is intended to accurately control and adjust the tension of the cable 24. The string tensioning motor 31 is combined with the sliding saddle 21 by a fastening connection, and as a driving source, it drives the winding block 32 to rotate by electric means. The winding block 32 is connected to the string tensioning motor 31 through a transmission connection, receives the driving torque of the motor, and changes the tension of the cable 24 by rotation, ensuring that the tension of the cable 24 is accurately controlled. The tension sensor 33 is fixed together with the winding block 32 by a fastening connection, monitors the tension of the cable 24 in real time, and transmits the feedback signal to the control system to ensure that the tension is always kept within a predetermined range. The winding block 32 contacts the cable 24 and abuts against it through tension. The tension state of the cable 24 is controlled by the adjustment of the winding block 32, ensuring that the system remains stable during operation. In the work process, after the string tensioning motor 31 is started, the winding block 32 is driven to rotate, so that the cable 24 generates the required tension. The rotation of the winding block 32 drives the cable 24 to be tensioned, and the tension sensor 33 monitors the tension of the cable 24 in real time and feeds back the data to the control system. The control system adjusts the running speed of the motor according to the tension value fed back by the sensor to ensure that the tension of the cable 24 is always kept within the set value range. Through this precise adjustment, the string tensioning mechanism 3 can adjust the tension in time according to the actual load demand, thereby ensuring the stability of the large-span beam mechanism 2. The working principle is that the string tensioning motor 31 drives the winding block 32 to rotate, changes the relative position between the winding block 32 and the cable 24, and thus adjusts the tension of the cable 24. The tension sensor 33 monitors the actual tension of the cable 24 and converts it into an electrical signal to transmit to the control system, and the control system adjusts the working state of the motor in real time according to the feedback signal. The change in the speed of the motor will directly affect the rotation rate of the winding block 32, thereby accurately controlling the tension of the cable 24 and ensuring smooth operation under load conditions. The effect achieved is that through this precise adjustment mechanism, the string tensioning mechanism 3 can adjust the tension of the cable 24 in real time when the load changes, ensuring the stability and safety of the structure. The feedback mechanism of the tension sensor 33 enables the system to automatically adjust to ensure that the tension remains within an ideal range, avoid excessive tension or relaxation, and improve the overall performance and reliability of the long-span beam mechanism 2.

[0055] Further, the servo mechanism 4 includes a longitudinal hydraulic cylinder 41, a transverse hydraulic cylinder 42, a locking assembly 43 and a mounting seat 44, the longitudinal hydraulic cylinder 41 and the locking assembly 43 are connected in transmission, the web 26 and the locking assembly 43 are connected in transmission, the longitudinal hydraulic cylinder 41 and the foundation pit 7 are fastened, the transverse hydraulic cylinder 42 and the wedge seat 27 are connected in transmission, the transverse hydraulic cylinder 42 and the mounting seat 44 are fastened, the locking assembly 43 includes a triangular block 431, a fourth elastic member 432, an electromagnetic block 433, an inner frame 4 34 and the outer frame 435, the triangular block 431 and the inner frame 434 are slidably connected, the triangular block 431 and the outer frame 435 abut, the triangular block 431 and the fourth elastic member 432 are tightly connected, the triangular block 431 and the outer frame 435 abut, the outer frame 435 is provided with a locking groove 4351, the outer frame 435 and the belly rod 26 are tightly connected, the inner frame 434 and the longitudinal hydraulic cylinder 41 are tightly connected, the triangular block 431 and the electromagnetic block 433 are magnetically repelled, and the electromagnetic block 433 and the inner frame 434 are tightly connected.

[0056] By adopting the above technical solution, the servo mechanism 4 is composed of a longitudinal hydraulic cylinder 41, a transverse hydraulic cylinder 42, a locking assembly 43 and a mounting seat 44, which is designed to accurately control the longitudinal and transverse movement of the long-span beam mechanism 2, and ensure the stability of the position of each part through a locking mechanism. The longitudinal hydraulic cylinder 41 and the locking assembly 43 are combined through a transmission connection, so that the action of the hydraulic cylinder can directly affect the locking assembly 43, and control the longitudinal movement and positioning of the system. The longitudinal hydraulic cylinder 41 is connected to the foundation pit 7 through a fastening connection to provide the necessary longitudinal driving force for the system. The transverse hydraulic cylinder 42 and the wedge seat 27 are connected through a transmission connection to realize the transverse adjustment function, and are connected to the mounting seat 44 through a fastening connection to ensure the stability of the hydraulic cylinder when performing transverse adjustment. The locking assembly 43 includes a triangular block 431, a fourth elastic member 432, an electromagnetic block 433, an inner frame 434 and an outer frame 435, wherein the triangular block 431 and the inner frame 434 are matched through a sliding connection to ensure the precise positioning of the locking assembly 43 during operation. The triangular block 431 and the outer frame 435 ensure the close fit of the structure through the abutment effect, and the triangular block 431 and the fourth elastic member 432 maintain a certain elastic support through the fastening connection to prevent excessive displacement. The outer frame 435 is provided with a locking groove 4351 to ensure that the locking assembly 43 can be stably fixed in the desired position, and is connected to the web 26 through a fastening connection to enhance the overall mechanical stability. The inner frame 434 is fastened to the longitudinal hydraulic cylinder 41 to ensure that the longitudinal drive of the hydraulic cylinder can accurately match the control mechanism of the locking assembly 43. The triangular block 431 and the electromagnetic block 433 are transmitted through the effect of magnetic repulsion. The electromagnetic block 433 is fastened to the inner frame 434, and the locking action is accurately controlled by the action of electromagnetic force. In the working process, the longitudinal hydraulic cylinder 41 and the transverse hydraulic cylinder 42 realize the precise adjustment of the large-span beam mechanism 2 through hydraulic drive. The longitudinal hydraulic cylinder 41 adjusts the longitudinal position of the overall structure, and the transverse hydraulic cylinder 42 is responsible for transverse fine-tuning. The locking assembly 43 works after the hydraulic cylinder is adjusted, and the structure is fixed in the desired position through the cooperation of the triangular block 431 and the outer frame 435. The electromagnetic block 433 triggers the locking action through the magnetic repulsion mechanism, tightens the structure, and ensures the stability after adjustment. The fourth elastic member 432 provides elastic support to further enhance the locking effect and avoid loosening caused by vibration or external force. The working principle is that when the system needs to adjust the position, the longitudinal hydraulic cylinder 41 and the transverse hydraulic cylinder 42 adjust the longitudinal and transverse positions of the structure respectively by controlling the hydraulic drive. After the adjustment is completed, the electromagnetic block 433 works with the triangular block 431 through the effect of magnetic repulsion to ensure that the locking assembly 43 is accurately positioned and the position of the entire system is fixed through the fastening connection of the inner frame 434 and the outer frame 435. The cooperation of the fourth elastic member 432 and the triangular block 431 ensures the elastic support of the locking system, enhances the locking stability, and prevents displacement or loosening. The design of the locking groove 4351 on the outer frame 435 provides additional safety to ensure that the structure always remains in a locked state under load or vibration.The effect achieved is that the servo mechanism 4 can achieve high-precision adjustment and locking of the large-span beam structure through precise hydraulic control and electromagnetic locking technology, ensuring that the structure is always in a stable state under various working conditions. The combination of the dynamic adjustment of the hydraulic cylinder and the static locking of the locking assembly 43 not only improves the adjustment ability of the entire device, but also effectively reduces the impact of vibration or load changes on the structure, thereby improving the safety and reliability of the system.

[0057] Furthermore, the corner support mechanism 5 includes a corner connector 51, a corner support steel frame 52 and a corner connection rod 53. The corner connector 51 and the mounting seat 44 are fastened together, the corner connection rod 53 and the mounting seat 44 are fastened together, the corner connector 51 and the corner support steel frame 52 are fastened together, and the corner support steel frame 52 is a double-layer arrangement.

[0058] By adopting the above technical solution, the angle support mechanism 5 is composed of an angle connector 51, an angle support steel frame 52 and an angle connecting rod 53, and is designed to enhance the stability and bearing capacity of the long-span beam structure. The angle connector 51 is fixed to the structure with the mounting seat 44 by a fastening connection to ensure the firm installation of the angle support assembly. The angle connecting rod 53 is also connected to the mounting seat 44 by a fastening connection, and works in conjunction with the angle connector 51 and the angle support steel frame 52 to form a stable support structure. The angle connector 51 and the angle support steel frame 52 are firmly connected by a fastening connection to ensure the transmission and stability of force. In particular, the angle support steel frame 52 is a double-layer setting, and by increasing the number of layers of the steel frame, the strength and stability of the angle support structure are improved, ensuring that it can effectively withstand external forces from all directions under heavy loads. In the working process, the angle support mechanism 5 provides additional support force at key positions of the long-span beam structure through the joint action of the angle connector 51, the angle support steel frame 52 and the angle connecting rod 53. The corner connector 51 and the angle support steel frame 52 form a high-strength support frame through a firm connection structure. When the structure is displaced or subjected to external force, the angle connecting rod 53 and the angle support steel frame 52 can quickly share the external force to ensure the stability of the beam body. The double-layer angle support steel frame 52 can withstand a larger load, improve the support capacity, and avoid the weak links that may be caused by the single-layer structure. The working principle is that the corner connector 51 effectively transmits the force to the angle support steel frame 52 and the angle connecting rod 53 through the fastening connection with the mounting seat 44. When the angle connecting rod 53 is under load, it will distribute the external force to the angle support steel frame 52 through the connection. Under the support of the double-layer steel frame structure, the entire angle support mechanism 5 can provide higher stability and stronger bearing capacity. The double-layer angle support steel frame 52 increases the bearing capacity by increasing the structural strength, so that the system can adapt to larger loads or sudden pressures, and avoid the risk of structural instability or damage. The effect achieved is that the angle support mechanism 5 can effectively enhance the stability and bearing capacity of the structure through precision design and the application of high-strength materials. The provision of the double-layer angle support steel frame 52 enables the structure to share more pressure when facing high loads, preventing local deformation or instability caused by force concentration, thereby significantly improving the safety and durability of the large-span beam structure.

[0059] Furthermore, the detection mechanism 6 includes a pressure sensor 61 and a level sensor 62 . The pressure sensor 61 is fastened to the H-shaped steel frame 11 . The pressure sensor 61 is located at a position where the foundation pit 7 and the H-shaped steel frame 11 are fixed. The level sensor 62 is fastened to the support frame 13 .

[0060] By adopting the above technical solution, the detection mechanism 6 is composed of a pressure sensor 61 and a horizontal sensor 62, which is intended to monitor the working state of the long-span beam structure in real time during use to ensure its stability and safety. The pressure sensor 61 is fixed to the H-shaped steel frame 11 by a fastening connection, and is installed at the fixing point of the foundation pit 7 and the H-shaped steel frame 11. It is responsible for monitoring the pressure changes borne by the long-span beam structure to ensure that the structure does not exceed the safe load-bearing range during operation. The horizontal sensor 62 is connected to the support frame 13 by a fastening connection to monitor the horizontal state of the structure in real time to ensure the balance of the support frame 13 under various loads. In the workflow, the pressure sensor 61 measures the pressure on the structure in real time, and transmits the data to the control system to feedback whether the structure is in a safe working state. If the measured pressure exceeds the set safety threshold, the system will automatically issue an alarm or take adjustment measures, such as reducing the load or adjusting the state of the support device. At the same time, the horizontal sensor 62 monitors the horizontal position change of the support frame 13 to ensure that the support frame 13 does not tilt or deform under the load, and timely feedbacks data to the control system to help determine whether the structure is tilted or unstable. If the tilt is found to be beyond the allowable range, the system will start the adjustment program to rebalance the structure. The working principle is that the pressure sensor 61 senses the pressure changes on the structure and uses the sensing principle such as strain gauge to convert the pressure into an electrical signal, which is transmitted to the control system for processing and analysis. The horizontal sensor 62 uses the principle of laser, electronic level or tilt sensor to measure the horizontal angle of the support frame 13 in real time, and converts the data into a signal to feed back to the control system. The control system makes judgments based on the data of these sensors and automatically adjusts the operating state of the structure to ensure that the system is always in a safe and stable working environment. The effect achieved is that the detection mechanism 6 can detect the potential risks of the structure in real time by accurately monitoring the pressure and horizontal state, and avoid safety accidents caused by overload or imbalance. The high-precision monitoring of the pressure sensor 61 ensures that the structure is always within a reasonable load-bearing range and avoids structural damage caused by excessive pressure. The horizontal sensor 62 detects the horizontal state of the support frame 13 in real time to prevent functional failure caused by tilt or instability, and ensures the reliability and safety of the large-span beam structure under various working conditions.

[0061] Working principle of the present invention:

[0062] The specific implementation of the support device is to achieve support, tension adjustment, stability detection and motion control through the close cooperation of multiple mechanisms. First, the main support mechanism 1 is fastened to the foundation pit 7 through the H-shaped steel frame 11, the inner support rod assembly 12, the support frame 13, and the connecting plate 14 to form the basic structure of the support device. The large-span beam mechanism 2 is connected to the main support mechanism 1 through the sliding saddle 21, the buffer assembly 22, the pull rod 23, the cable 24, the fork ear 25, the web 26 and the wedge seat 27 to provide a wider range of support and tension adjustment. The string tensioning mechanism 3 is connected to the large-span beam mechanism 2 through the string tensioning motor 31, the winding block 32 and the tension sensor 33 to achieve precise tension control. The servo mechanism 4 is connected to the string tensioning mechanism 3 through the longitudinal hydraulic cylinder 41, the transverse hydraulic cylinder 42, the locking assembly 43 and the mounting seat 44 to provide automatic adjustment of movement and locking functions. The angle support mechanism 5 provides additional stable support through the angle joint 51, the angle support steel frame 52 and the angle connecting rod 53 to enhance the bearing capacity of the overall structure. The detection mechanism 6 is composed of a pressure sensor 61 and a level sensor 62, which monitors the stress and horizontal state of the device, and transmits the data to the servo mechanism 4 to adjust the support system in real time. In terms of the workflow, first, the tensioning motor 31 drives the winding block 32 to adjust the tension, the cable 24 is subjected to tension and transmitted to the large-span beam mechanism 2, and the position is adjusted through the sliding saddle 21 to ensure the stability of the large-span beam. The longitudinal hydraulic cylinder 41 and the transverse hydraulic cylinder 42 in the servo mechanism 4 are precisely adjusted according to the data fed back by the detection mechanism 6 to ensure that the device remains in the predetermined position and angle. The buffer assembly 22 alleviates the external impact through the non-Newtonian fluid box 222 and the third elastic member 223, protects the device from vibration, and prolongs its service life. The overall working principle is that the various parts work together, the fastening connection between the main support structure and the large-span beam forms a stable support, the tensioning mechanism 3 accurately controls the tension, the servo mechanism 4 automatically adjusts, the angle support mechanism 5 enhances stability, and the detection mechanism 6 monitors and feedbacks information in real time to ensure that the device always maintains the best state during operation. Through this precise design, the support device can provide efficient and stable support and adjustment under various working conditions, has strong load capacity and seismic resistance, and meets the high-precision requirements in complex environments.

[0063] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A chord-type double-truss beam support device with feedback function based on structural steel, characterized in that: The support device comprises a main support mechanism (1), a large-span beam mechanism (2), a string tensioning mechanism (3), a servo mechanism (4), an angle support mechanism (5), a detection mechanism (6) and a foundation pit (7); the main support mechanism (1) and the large-span beam mechanism (2) are tightly connected; the string tensioning mechanism (3) and the large-span beam mechanism (2) are tightly connected; the servo mechanism (4) and the string tensioning mechanism (3) are transmission-connected; the detection mechanism (6) and the servo mechanism (4) are electrically connected; and the main support mechanism (1), the large-span beam mechanism (2), the servo mechanism (4) and the angle support mechanism (5) are all tightly connected to the foundation pit (7).

2. According to claim 1, a chord-type double-truss beam support device with feedback function based on structural steel is characterized in that: The main support mechanism (1) comprises an H-shaped steel frame (11), an inner support rod assembly (12), a support frame (13), a connecting plate (14) and a jack (15); the H-shaped steel frame (11) and the inner support rod assembly (12) are tightly connected; the H-shaped steel frame (11) and the connecting plate (14) are tightly connected; both ends of the H-shaped steel frame (11) are tightly connected to a foundation pit (7); the support frame (13) is located at both sides of the H-shaped steel frame (11); the support frame (13) and the foundation pit (7) are tightly connected; the jack (15) and the H-shaped steel frame (11) are tightly connected; and the jack (15) is located at both ends of the H-shaped steel frame (11).

3. The chord-type double-truss beam support device with feedback function based on structural steel according to claim 2, characterized in that: The inner support rod assembly (12) comprises a scissor support rod (121), a hinged support rod (122), a rotating rod (123), a compression rod (124), a connecting plate (125), a sliding block (126), a first elastic member (127) and a second elastic member (128); the hinged support rod (122) and the sliding block (126) are hinged; the sliding block (126) and the support frame (13) are slidably connected; the sliding block (126) and the first elastic member (127) are fastened to each other; the first elastic member (127) and the support frame (13) are fastened to each other; the scissor support rod (121) and The H-shaped steel frame (11) is hinged, the rotating rod (123) and the second elastic member (128) are tightly connected, the second elastic member (128) and the compression rod (124) are tightly connected, the compression rod (124) and the rotating rod (123) are slidably connected, the compression rod (124) and the support frame (13) are rotatably connected, the support frame (13) is provided with a sliding groove (131), the sliding block (126) and the sliding groove (131) are slidably connected, the connecting plate (125) and the H-shaped steel frame (11) are tightly connected, and the scissor pull rod (121) and the H-shaped steel frame (11) are tightly connected.

4. The chord-type double-truss beam support device with feedback function based on structural steel according to claim 3, characterized in that: The H-shaped steel frame (11) comprises an end steel frame (111), a middle steel frame (112) and a telescopic hydraulic cylinder (113); the end steel frame (111) and the middle steel frame (112) are slidably connected, the telescopic hydraulic cylinder (113) and the middle steel frame (112) are fastenedly connected, and the telescopic hydraulic cylinder (113) and the end steel frame (111) are transmission-connected.

5. The chord-type double-truss beam support device with feedback function based on structural steel according to claim 4, characterized in that: The large-span beam mechanism (2) comprises a sliding saddle (21), a buffer assembly (22), a pull rod (23), a cable (24), a fork ear (25), a web (26) and a wedge seat (27); the sliding saddle (21) is provided with three hinge holes (211); the buffer assembly (22) and the sliding saddle (21) are tightly connected; the pull rod (23) and the sliding saddle (21) are hingedly connected; The cable (24) and the sliding saddle (21) are abutted for tensioning, the cable (24) and the wedge-shaped seat (27) are tightly connected, the pull rod (23) and the wedge-shaped seat (27) are hinged, the fork ear (25) and the web (26) are tightly connected, the fork ear (25) and the sliding saddle (21) are hinged, the web (26) and the servo mechanism (4) are tightly connected, and the wedge-shaped seat (27) and the servo mechanism (4) are tightly connected.

6. The chord-type double-truss beam support device with feedback function based on structural steel according to claim 5, characterized in that: The buffer assembly (22) comprises a buffer plate (221), a non-Newtonian fluid box (222) and a third elastic member (223); the non-Newtonian fluid box (222) and the sliding saddle (21) are fixedly connected; the buffer plate (221) and the non-Newtonian fluid box (222) are slidably connected; the third elastic member (223) and the non-Newtonian fluid box (222) are fixedly connected; and the third elastic member (223) and the buffer plate (221) are fixedly connected.

7. The chord-type double-truss beam support device with feedback function based on structural steel according to claim 6, characterized in that: The string tensioning mechanism (3) comprises a string tensioning motor (31), a winding block (32) and a tension sensor (33); the string tensioning motor (31) is tightly connected to the sliding saddle (21); the string tensioning motor (31) is transmission-connected to the winding block (32); the tension sensor (33) is tightly connected to the winding block (32); and the winding block (32) is in abutment with the cable (24).

8. The chord-type double-truss beam support device with feedback function based on structural steel according to claim 7, characterized in that: The servo mechanism (4) comprises a longitudinal hydraulic cylinder (41), a transverse hydraulic cylinder (42), a locking assembly (43) and a mounting seat (44); the longitudinal hydraulic cylinder (41) and the locking assembly (43) are transmission-connected; the web rod (26) and the locking assembly (43) are transmission-connected; the longitudinal hydraulic cylinder (41) and the foundation pit (7) are firmly connected; the transverse hydraulic cylinder (42) and the wedge seat (27) are transmission-connected; the transverse hydraulic cylinder (42) and the mounting seat (44) are firmly connected; the locking assembly (43) comprises a triangular block (431), a fourth elastic member (432), an electromagnetic block (433), an inner frame (434) and The outer frame (435) is provided with a locking groove (4351), the outer frame (435) is firmly connected to the web (26), the inner frame (434) is firmly connected to the longitudinal hydraulic cylinder (41), the triangular block (431) and the electromagnetic block (433) are magnetically repelled and transmitted, and the electromagnetic block (433) and the inner frame (434) are firmly connected.

9. The chord-type double-truss beam support device with feedback function based on structural steel according to claim 8, characterized in that: The corner support mechanism (5) comprises a corner connector (51), a corner support steel frame (52) and a corner connecting rod (53); the corner connector (51) and the mounting seat (44) are tightly connected; the corner connecting rod (53) and the mounting seat (44) are tightly connected; the corner connector (51) and the corner support steel frame (52) are tightly connected; and the corner support steel frame (52) is a double-layer arrangement.

10. The chord-type double-truss beam support device with feedback function based on structural steel according to claim 9, characterized in that: The detection mechanism (6) comprises a pressure sensor (61) and a level sensor (62); the pressure sensor (61) is tightly connected to the H-shaped steel frame (11); the pressure sensor (61) is located at a location where the foundation pit (7) and the H-shaped steel frame (11) are fixed; and the level sensor (62) is tightly connected to the support frame (13).

Images