860 results about "Monorail" patented technology

The invention discloses a monorail crane inspection robot intelligent test method based on data analysis, and relates to the technical field of intelligent detection, and the method comprises the following steps: synchronously collecting track images, point cloud and attitude data, carrying out time alignment and preprocessing, and outputting a standardized data packet; detecting an inspection target by using a YOLO detection network, and outputting a multi-scale feature vector in combination with a point cloud feature hierarchy extraction network and a time sequence convolutional network; predicting a fault development trend in combination with an improved A-star algorithm and a long short-term memory network, optimizing an inspection path through reinforcement learning, and outputting a maintenance decision scheme; the maintenance decision scheme is converted into a control instruction, the robot is driven to execute an inspection task and feed back the operation state in real time, incremental learning and point cloud reconstruction are combined, and a visual diagnosis report is output. According to the method, the dynamic threshold algorithm is adopted for self-adaptive analysis, and the key geometric indexes are calculated in combination with the cross-modal attention mechanism, so that the recognition capability of structural anomalies is improved.

The invention discloses a monorail crane multi-vehicle cooperative scheduling control method based on edge calculation, which comprises the following steps: carrying out topological modeling on a track, and constructing a section-time slice space-time resource model; acquiring real-time operation data of each vehicle at an edge computing node, generating a vehicle state set and executing time-space conflict prediction; when a multi-vehicle potential conflict is detected, carrying out topology consistency check on a conflict section; calculating a priority value of each vehicle in the corrected candidate traffic relation; performing section occupation authorization and shadow time slot distribution through a double-threshold mechanism; the node issues an operation instruction to the authorized vehicle; when abnormal events such as communication interruption, retention or task insertion are detected, the node triggers local path replanning and occupancy right redistribution. According to the method, a multi-factor priority scheduling mechanism is introduced into the edge computing node, so that real-time conflict avoidance and self-adaptive cooperative control of multiple monorail cranes is realized.

The invention discloses a CO detection device for a monorail crane diesel engine, and relates to the technical field of gas detection equipment, the CO detection device comprises a mounting box, a detection assembly is arranged on one side in the mounting box, the detection assembly comprises a detection box, a gas chamber is arranged in the detection box, a laser detector is arranged in the gas chamber, and the laser detector is arranged in the detection box. One end of the air chamber is fixedly connected with an air inlet filtering assembly, and one side of the detection assembly is provided with a back-flushing cleaning assembly used for cleaning the air inlet filtering assembly; one end of the mounting box is rotationally connected with a butt joint used for being in butt joint with an exhaust pipe of the diesel engine. Sampled flue gas is filtered through the gas inlet filtering assembly, high-pressure flue gas is stored through the high-pressure gas storage cavity, the high-pressure flue gas is discharged to the gas inlet filtering assembly when needed through control of the backflushing electromagnetic valve, filter material carbon deposition is removed through gas reverse impact force, and the trouble of frequent manual replacement and maintenance is avoided.

The invention provides a monorail crane rail deformation monitoring method based on an inertia measurement technology, and belongs to the technical field of coal mine underground rail monitoring. According to the technical scheme, the method comprises the following steps: S1, deploying a plurality of IMU modules at equal intervals in the extension direction of a monorail crane track; s2, collecting initial IMU data of each IMU module and a monorail crane operation speed signal; s3, resolving initial spatial position data of the track, and generating an undeformed monorail crane track reference value; s4, in the coal mine transportation process, current IMU data and speedometer speed signals of all IMU modules are collected regularly in real time; s5, calculating the current spatial position data of the track; s6, calculating a displacement difference value and an attitude angle deviation of each measuring point; and S7, determining that the region is a monorail crane track deformation point. The system has the beneficial effects that high-resolution real-time monitoring is realized through high-frequency data acquisition and multi-sensor fusion, the external interference resistance is high, and a deformation area can be accurately positioned without interrupting operation.

The present invention relates to the technical field of prefabricated elevated stations. Disclosed are a self-balancing modular fully-prefabricated elevated station transition structure construction method and a structure. The construction method comprises the following steps: constructing precast pipe piles and a precast pile cap; executing concrete backfilling; installing a pier column and connecting same to the pile cap; installing a Y-pier cap for executing a connection; installing a precast middle cap beam and precast side cap beams; installing precast steel tubular columns; installing top overhanging precast reinforced concrete cap beams and a precast reinforced concrete middle cross beam; hoisting and installing precast platform slabs and precast arched platform headwalls; installing precast straddle monorail track beams; and installing a precast steel structure canopy. By using the dual columns to achieve an overhead layer and an upper structure, the present invention reduces the absolute overhanging length, improves the performance of the structure under stress, and reduces the sectional dimensions of components, thus saving the floor area of the pier column to the utmost extent, enhancing the applicability of station structures in a wider range of various urban environments, and improving the universality of the structure.

The utility model relates to monorail crane sports car protection equipment, in particular to an intelligent monorail crane sports car catching device which comprises a fixed tripod and a car catching mechanism. The fixed tripod is fixed to the side wall of a roadway, a left inserting plate and a right inserting plate are arranged below the fixed tripod, a left fixed shaft and a right fixed shaft are arranged in a car catching frame of the car catching mechanism, the left fixed shaft is rotationally connected with a left car catching plate, the right fixed shaft is rotationally connected with a right car catching plate, and a left air cylinder and a right air cylinder are fixed to the upper portion of the car catching frame. A piston rod of the left air cylinder is hinged to the upper end of the left car catching plate, the upper end of the left car catching plate is further hinged to a horizontal left inserting rod, a piston rod of the right air cylinder is hinged to the upper end of the right car catching plate, and the upper end of the right car catching plate is further hinged to a horizontal right inserting rod. When the monorail crane runs, the intelligent car catching device can counteract the running potential energy of the car, so that the running car is stopped in time, and the possibility of accidents after the car runs is reduced.

The invention relates to an inclined shaft TBM disassembly construction method. The method comprises the following steps that firstly, an adjustable supporting frame is arranged at the bottom of an inclined shaft; step 2, reversely disassembling each component according to the sequence of a cutterhead driving part, a main bearing, a shield and a thrust cylinder; thirdly, in the disassembling process, a hydraulic jacking device and a monorail hoist work cooperatively to conduct component hoisting; fourthly, a temporary transportation channel is formed in the side wall of the inclined shaft; fifthly, after every two parts are disassembled, steel arch supports are erected in the corresponding areas; and sixthly, the disassembled parts are transported outwards through a wheel type transport vehicle along an inclined shaft track. Through cooperative control of the multi-stage supporting system and the dynamic disassembling sequence, the stability of the inclined shaft structure is effectively guaranteed, the disassembling efficiency and the transportation safety of large-size components are remarkably improved by combining the design of the transportation channel with precise positioning and optimization of a braking system, and the method is suitable for rapid disassembling and transferring operation of TBM equipment in inclined shaft tunnel engineering.

The invention relates to the technical field of hoisting equipment, and provides a lithium battery unmanned monorail hoist which comprises a suspension track and a hoist assembly, the hoist assembly comprises a car body unit, a hoisting and conveying unit and a suspension unit, the suspension unit is arranged on the suspension track, and the suspension unit comprises a power suspension unit and a load suspension unit. The vehicle body unit is connected with the power suspension unit, the hoisting conveying unit is connected with the load suspension unit, the load suspension unit comprises a suspension beam, load frames, load wheels and guide wheels, the load frames are arranged at the two ends of the suspension beam and comprise mounting ends on the two sides of a suspension rail, and the guide wheels and the load wheels are arranged at the mounting ends. The guide wheels abut against the guide side faces of the suspension rails, and the load-carrying wheels abut against the load-bearing faces of the suspension rails vertically. The problems that in the prior art, when a traveling wheel body of a suspension type rail crane faces a heavy load, due to the fact that the contact face is incomplete, the service life of the wheel body and components of the wheel body is prolonged, and the operation stability is poor are solved.

A monorail hoist positioning method combining rail joint beacons and inertial navigation. An odometry kinematic model for a monorail hoist is established by means of an encoder on the monorail hoist, and an extended Kalman filter is used to fuse a heading angle obtained from a kinematic model solution and a heading angle obtained from a strapdown inertial navigation solution. Beacons are arranged at rail joints for the monorail hoist, and vibration signals are acquired by a vibration sensor. By combining a strapdown inertial navigation system, the encoder, and a rail installation diagram, a rail joint determination model is constructed to perform filtering, so as to obtain impact signals at rail joint beacons that meet a requirement. Beacon identifiers are used to match the identified rail joint beacons against specific beacon coordinates in the rail installation diagram, so as to obtain a time-position coordinate sequence for the monorail hoist arriving at the rail joints. A combined positioning model integrating rail joint beacons and strapdown inertial navigation is constructed to realize integration of local relative positioning and global absolute positioning of the monorail hoist. The method can improve the positioning accuracy of the monorail hoist while reducing positioning costs.

The utility model discloses a positioning device for mounting a threshold of a monorail vehicle. The positioning device comprises a main frame, a central positioning bracket and a pair of end connecting components, wherein the central positioning bracket is aligned with the central line of a vehicle body of the vehicle; the center positioning support is arranged in the middle of the main frame, the pair of end connecting assemblies are arranged at the two ends of the main frame respectively, each end connecting assembly comprises an end connecting support and a positioning pin arranged on the end connecting support, and the positioning pins are provided with inserting pieces with the number capable of being increased or decreased to adjust the positions. And a positioning structure for positioning the doorsill is arranged on the end connecting bracket. The position of a notch of the center positioning support is adjusted by adjusting the number of inserting pieces so as to ensure that the center line of the whole device coincides with the center line of a vehicle body, meanwhile, positioning pins are used for fixing the positions of the left side and the right side of the whole device, and a fixing block presses a threshold support by adjusting an adjusting handle of an end connecting assembly. The positioning device is matched with a clamp for clamping so as to further position the doorsill; the device is suitable for field operation and is simple and practical.

The permanent magnet suspension monorail vehicle bogie comprises a bogie frame and a suspension device, a motor is installed at the top of the bogie frame, a brake device and a guide wheel are arranged at the two ends of the bottom of the bogie frame in the longitudinal direction of the bogie frame, and the number of the guide wheel located at any end of the bogie frame is one. Safety wheels are installed on the periphery of the bottom of the bogie frame, and the guide wheels and the brake device share a brake clamping rail. A current collection device and a permanent magnet suspension device are mounted at the bottom of the bogie frame; the suspension device comprises a suspension beam, and the suspension beam is connected with the bogie frame through a suspension pin and connected to a vehicle body through a suspension frame and a traction rod. According to the permanent magnet suspension monorail vehicle bogie, the internal structure of the bogie frame can be simplified, and the strength design of the bogie frame is reduced; the scheme that a single guide wheel is arranged on a single side is adopted, and the number of the guide wheels is reduced; the guide wheels and the brake device share the brake clamping rail, and the overall height of the bogie and the rail beam can be reduced.

The present invention relates to the technical field of straddle-type monorail engineering vehicles, specifically disclosing a bogie for a straddle-type monorail engineering vehicle, comprising a frame, a traction device mounted on the frame, independent drive devices symmetrically arranged and mounted on the frame, and guide and stabilizing wheel sets mounted on the frame and symmetrically arranged along the travel direction. The present invention effectively reduces the overall weight and length of the engineering vehicle, and can accommodate confined installation spaces within the vehicle with its smaller dimensions.

The utility model discloses a full-automatic hydraulic cutting trephine which comprises a trephine body, an automatic monorail, a connecting frame, a rotary speed reducer and an upper connector, one end of the upper connector is connected with the rotary speed reducer, the other end of the upper connector is used for being connected with an external mechanical equipment body, and the connecting frame is connected with the output end of the rotary speed reducer. The automatic monorail is fixedly mounted at the bottom of the connecting frame, the trephine body is mounted on the automatic monorail and can reciprocate along the automatic monorail, and the swing cutting mechanism is further mounted on the automatic monorail and connected with the trephine body and controls the trephine to swing on a cutting plane. According to the full-automatic hydraulic cutting trephine, through automatic control and structural innovation, the industrial cutting efficiency is remarkably improved, angle adjustment is completed through one key, the process of positioning, depth cutting and transverse cutting is automatically executed, and the risk and cost of manual operation are reduced.

The bogie comprises a bearing frame and a suspension device, the bearing frame is of a hollow structure so that an installation area can be formed on the inner side of the bearing frame, and a permanent magnet installation base and a linear motor installation base are arranged in the installation area; the permanent magnet mounting seats are arranged on the two sides of the top wall of the mounting area, and permanent magnets are arranged on the permanent magnet mounting seats so as to generate magnetic levitation force with magnets in the track beam; the linear motor mounting seat is arranged at the bottom of the permanent magnet mounting seat, the linear motor mounting seat and the permanent magnet mounting seat are arranged at an interval, a linear motor is fixedly arranged on the linear motor mounting seat, and the linear motor and the permanent magnet are symmetrically arranged about the symmetric line of the mounting area; and the suspension device is rotationally arranged at the bottom of the bearing frame. The mounting area is arranged in the bearing frame to mount the permanent magnet and the linear motor, so that the distance between the permanent magnet and the linear motor is reduced, the magnetic levitation force variation of the position of the permanent magnet during driving is reduced, the inclination angle of the bogie is reduced, and the running stability of a vehicle is improved.

The utility model relates to a movable trailer pump and a secondary lining trolley thereof. The movable trailer pump comprises a rack, walking wheels, a connecting assembly, a conveying assembly and a hydraulic assembly. The rack is used for supporting and connecting components on the movable trailer pump; the walking wheels are arranged below the rack and are monorail wheels; the connecting assembly is arranged above the rack; the connecting assembly comprises a conical joint and a cylindrical bayonet, and the conical joint is telescopically arranged below the cylindrical bayonet; the cylindrical bayonet is connected with the moving device; the conveying assembly is arranged above the rack and used for conveying concrete; and the hydraulic assembly is arranged above the rack and used for providing power for the movable trailer pump.

The utility model relates to the technical field of crown block moving maintenance devices, and discloses a crown block track monorail clamping obstacle crossing moving chassis which comprises a chassis body, a clamping mechanism is arranged on the chassis body and comprises a clamping motor, a clamping gear and two sets of clamping racks, the clamping gear is meshed with the two sets of clamping racks at the same time, and the clamping motor is arranged on the chassis body. Clamping wheels are rotationally arranged on the two groups of clamping racks; a driving system is further arranged on the chassis and comprises a driving motor, the driving motor is connected with a driving gear, a driving connecting rod is rotationally arranged on the chassis, a transmission gear is fixedly arranged on the driving connecting rod, and the transmission gear is meshed with the driving gear; the chassis is further provided with a driving mechanism, the driving mechanism comprises a first gear and a driving wheel, the driving wheel is fixedly connected with a second gear, and the second gear is meshed with the first gear. According to the utility model, the problem that the inspection and maintenance work of the crown block track is influenced because the movable chassis is blocked by a pressing plate bolt or an irregular joint and cannot normally move on the track can be solved.

The utility model belongs to the field of coal mine transportation, and discloses a monorail crane running posture adjusting device for a large deformation roadway, which comprises a running track, running hanging wheels and a carriage body, the running hanging wheels are clamped on the running track in a sliding manner, and the carriage body is connected with the running hanging wheels through connecting pieces; an adjusting bin is arranged in the carriage body, the adjusting bin comprises an adjusting body slidably connected into the carriage body, hydraulic cylinders are arranged on the two sides of the adjusting body, and piston rods at the output ends of the hydraulic cylinders abut against the peripheral wall of the adjusting body; one end of the carriage body is connected with a driving headstock, the driving headstock comprises a cockpit, a driving operation table, a monitoring unit and a hydraulic adjusting unit, the driving operation table is arranged in the cockpit, and the monitoring unit is arranged on the cockpit and used for monitoring the running posture; posture adjustment in the running process of the monorail hoist can be achieved, and a carriage body of the monorail hoist is prevented from being scratched and collided with a deformed roadway side and a raised bottom plate.

The utility model discloses a suspension type monorail vehicle bogie running-in test bench, comprising a support frame, a support platform, a running-in wheel set, a guide wheel backstop assembly and a loading assembly. Modularization and lightweight design is adopted, the whole bogie structure is placed, load loading is achieved, the guide wheel positioning function is achieved, and traction and running-in of a transmission system of the traction can be carried out.

1. The name of the design product: heavy rail end flange. 2. The use of the design product: used in mining field, used for connecting with monorail track. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The invention provides a heating and heat preservation system and a temperature control method for a suspension type monorail turnout in a cold region, and the system is provided with a plurality of temperature detection devices, a temperature controller, an operation interface, an isolation transformer, a heating control box and a heating device, the temperature controller is interactively and electrically connected with the operation interface and the heating control box; the input end of the heating control box is connected with the isolation transformer, and the output end is connected with the heating device. The temperature control method comprises two processes: an active special processing process and an automatic temperature control process. The mode of multiple temperature control points, multiple temperature sections and multiple control processes is adopted, the usability, reliability and safety of the suspension type monorail turnout system in the cold environment are improved, and the method is suitable for popularization.

The utility model discloses a quick-change explosion-proof lithium battery device for a monorail crane and the monorail crane. The quick-change explosion-proof lithium battery device comprises a standard battery box group, a master control box and a hoisting frame, the general control box is specially matched with the storage battery power supply of the monorail crane for use, serves as a general control part of a plurality of battery boxes and is used for coordinating charge and discharge control of the storage battery power supply. Power supply and signal cables of the standard battery box, the charger and the electro-hydraulic control vehicle are all connected into the master control box in an anti-explosion quick connector mode, and the master control box is responsible for controlling power supply and cut-off of all the battery boxes, power supply and cut-off of all loads and power receiving and cut-off of the charger. According to the utility model, a method for quickly changing the power supply of the explosion-proof lithium battery is adopted, so that a user has the possibility of quickly changing the power supply and quickly putting into operation of the monorail crane in a mine chamber, the waiting time for long-time charging is saved, and the use efficiency of the monorail crane is improved.

The invention relates to the technical field of sampling equipment, in particular to a monorail sampler. The device comprises a supporting piece, a main beam, a cross beam, a turning beam, a sampling machine, a sampling pipeline, a steering shell, a flow rising pipe, a rising section, a turning section and a steering frame, the pipeline supporting piece comprises a main beam, a cross beam and a transition beam, the transition beam and the cross beam are in a vertical position relation under an overlook angle, the sampling machine is slidably mounted on the cross beam, the sampling pipeline is arranged in the pipeline supporting piece, one end of the sampling pipeline is connected with the sampling machine, the steering shell is longitudinally mounted at one end of the cross beam, and the flow rising pipe is arranged in the transition beam. The ascending section is located in the steering shell. The steering frame is connected to the top face of the steering shell. Grain materials extracted by the sampling machine enter the storage bin through the sampling pipeline, then sequentially pass through the collection hopper and the collection bin, are controlled by the air-lock valve and are conveyed to the return bin through the flow rising pipe under the wind action of the grain blowing fan.

The present invention discloses a vibration control method for an axial eddy current damper considering time delay, which changes the traditional passive energy dissipation and vibration reduction mode of the axial eddy current damper through a wireless remote telescopic adjustment device. The axial eddy current dampers are symmetrically arranged on both sides of the bogie at the bottom of the straddle-type monorail vehicle along the vehicle center line to perform wireless remote active energy dissipation and vibration reduction on the vibration response of the straddle-type monorail during operation. Moreover, aiming at the time delay phenomenon between the control command and the output, a correction method for eliminating the influence of the time delay on the system control effect is designed, and the gain feedback matrix of the optimal lateral control force required by the system obtained by calculating and analyzing the system under the ideal state is instantaneously corrected to obtain the corrected optimal lateral control force. Thus, by remotely controlling the output device in the eddy current damper, the wireless remote vibration control effect of the system in the presence of time delay is improved, and the riding comfort and smoothness are enhanced.

1. Name of this product design: Sightseeing vehicle (retro monorail). 2. Purpose of this design: This design is intended for sightseeing and tourism. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to the technical field of railway vehicle chassis structures, and discloses a hinged type monorail vehicle chassis which comprises a main frame, a sleeper beam and a traction beam. The main frame comprises two sets of side longitudinal beams arranged side by side and two sets of side cross beams used for connecting the two sets of side longitudinal beams. The sleeper beam is parallel to the side cross beams, and the two ends of the sleeper beam are connected to the two sets of side longitudinal beams respectively; the traction beam and the side longitudinal beams are arranged in parallel, the two ends of the traction beam are connected to the two sets of side cross beams respectively, and the traction beam penetrates through the sleeper beam and is fixedly connected with the sleeper beam. And a traction plate is arranged on the traction beam. According to the double-layer truss type structural design, the traction beams, the side cross beams and the sleeper beams are composed, the weight is effectively reduced, and the structural strength and rigidity are guaranteed. Through the simple and convenient structure of the side cross beam, the stress on the side longitudinal beam can be effectively dispersed. The underframe structure is easy and convenient to construct, most of the underframe structure is made of profiles of the same or similar specifications, material preparation is easy and convenient, the welding amount is small, and the manufacturing time is saved by 30% or above.

This invention relates to an online monitoring method for brake block wear in a lithium battery-powered monorail. The monorail includes a travel drive unit, a brake, a brake block, and a speed detection unit. When a braking command is triggered, the method collects current or displacement signals from the braking actuator and travel speed or encoder pulse signals. Based on the current or displacement signals, it determines that the brake block and the braking friction pair have entered an effective clamping state. In the effective clamping state, the method controls the travel drive unit to apply a reverse trial torque constrained by a preset upper limit. During the application of torque, it judges whether the speed signal or encoder pulse signal exhibits a micro-slip exceeding a preset threshold. When micro-slip occurs, it determines that the brake block wear has resulted in insufficient braking friction margin and outputs a warning or interlocking control command. This invention can issue warnings or interlocking control commands at an early stage when brake block wear leads to a decrease in braking capacity, thereby effectively avoiding the risk of brake failure and improving the safety and reliability of monorail operation.

The present application belongs to the field of automatic driving and robot navigation technology, and particularly relates to a real-time map construction method and system for a monorail crane in a downhole roadway environment, which method comprises: acquiring vehicle-mounted sensor data and correcting motion distortion using an inertial measurement unit to generate standardized laser ranging data; constructing a discretized spherical sensitivity field, identifying a longitudinal degeneration vector through nonlinear mapping optimization, and generating a degeneration risk coefficient; mapping point cloud data to the longitudinal degeneration vector direction to generate a real-time density waveform, and calculating the best waveform offset by aligning with a reference density waveform; constructing a target function containing a longitudinal waveform locking constraint term weighted by the degeneration risk coefficient, solving the globally optimal pose, and completing map construction. The present application solves the problem of longitudinal positioning drift in a weak geometric structure roadway and achieves high-precision map construction.

The utility model provides a bogie structure and a sky rail system suitable for severe environments, the bogie structure comprises a bogie, the lower end of the bogie is used for being hinged with a vehicle body, the bogie is provided with a side rolling stopper, the side rolling stopper is used for limiting and buffering the side rolling angle of the vehicle body, and a motor frame is arranged above the bogie. The motor frame is vertically and movably connected with the bogie, an elastic vertical stopper is arranged between the bogie and the motor frame, the acting force of the vehicle body on the side rolling stopper is transmitted to the motor frame through the vertical stopper, positioning wheels are arranged at the two ends of the motor frame, the positioning wheels are used for abutting against a track beam, and the positioning wheels are used for transmitting the acting force on the motor frame to the track beam. The side rolling motion of a vehicle body is released, the side wind moment is balanced through the gravitational moment of the vehicle, the wheel load shedding rate of the bogie is reduced, meanwhile, the side rolling backstops, the vertical backstops and the positioning wheels are arranged, the side rolling angle is limited, the bogie can be prevented from overturning, and the structural reliability is guaranteed.

The utility model discloses a hanging structure of a newly-added lifting appliance walking monorail beam of an existing building, which comprises a plurality of concrete beams and monorail I-shaped steel beams which are connected and supported below a building floor, the monorail I-shaped steel beams are hung on the lower sides of the concrete beams through lifting appliances, and each lifting appliance comprises a plane steel plate and U-shaped channel steel. The plane steel plate is laid on the upper surface of the building floor slab, the two U-shaped steel channels are separately arranged on the two sides of the concrete beam, through holes are drilled in the positions, on the two sides of the concrete beam, of the building floor slab respectively, and connecting through holes matched with the through holes of the building floor slab are formed in the plane steel plate and the U-shaped steel channels respectively. Steel plate connecting bolts penetrate through the plane steel plate, the building floor and the through holes in the groove sides of one sides of the U-shaped steel channels to fixedly connect the two U-shaped steel channels with the building floor, and the single-rail I-shaped steel beam is fixedly connected with the groove sides of the other sides of the two U-shaped steel channels through I-shaped steel bolts.