4753 results about "Steel rope" patented technology

The invention relates to the technical field of suspension bridges, in particular to a suspension bridge stress simulation analysis system, which comprises a vibration monitoring module, a cable force prediction and calibration module, an environmental influence analysis module and a structural performance evaluation module, and extracts frequency characteristic values and amplitude information based on vibration frequency data of a suspension bridge steel cable. According to the method, the vibration frequency data is used for deep analysis, potential structure defects are recognized in an early stage, the early warning capacity is remarkably improved, the potential maintenance cost is reduced, the service life of the bridge is prolonged, and the stability and safety of the bridge under variable loads are guaranteed through prediction and adjustment of the real-time cable force state; by integrating environmental data to update the fluid-solid coupling model, the system can accurately simulate the influence of environmental change on the bridge, optimize the structural design, enhance the structural adaptability, improve the economical efficiency and practicability of the bridge design, and optimize decision support, so that the bridge maintenance is more efficient, and the long-term structural safety of the bridge is ensured.

The present application relates to a pile driver and a pile driving method with less wear on drill rods, and relates to the technical field of building construction, and comprises a main frame, a winch is arranged on one side surface of the main frame, a steel cable is wound on the drum of the winch, a top frame is welded on the top of the drill rod bracket, one end of the steel cable extends upward through a pulley and is connected to a drive box through a lifting ring, a motor frame is arranged in the middle of the drive box, a drive motor is connected to the center of the motor frame through bolts, the bottom drive of the drive motor is connected to a reducer, and the bottom output end of the reducer is connected to a buffer mechanism through the drive box, and the buffer mechanism comprises a connecting tube, a rebound tube, a coupling joint, a strip groove, a slider, a damping rod, a support spring and an auxiliary spring; the present application significantly reduces the wear of the drill rod during the construction process by using a high-strength, wear-resistant alloy material to make the drill rod, performing special treatment, and arranging a buffer mechanism and a guide mechanism.

The invention belongs to the technical field of gas production wellhead devices, and particularly relates to a 175MPa gas production wellhead device which comprises a gas production tree assembly and a tubing head assembly, the gas production tree assembly comprises a gate valve body, the gate valve body comprises a driver and a hand lever, and a protection assembly is installed between the driver and the hand lever; the protection assembly comprises a connecting shaft, a hand lever, a driver, a transmission sleeve, a steel rope, a high-strength spring, a transmission ring, a connecting block, a rotating groove and a transmission column. When the driver operates, the driver drives the connecting shaft to rotate, the connecting shaft rotates to drive the transmission column on the transmission ring to rotate synchronously, after the transmission column is in contact with the steel rope, the connecting shaft drives the steel rope to twist through the transmission column, and at the moment, the transmission sleeve moves towards the direction of the connecting shaft, so that the transmission sleeve is separated from the hand lever; and the phenomenon that the valve cannot be normally opened due to physical interference between the hand lever and the output shaft of the driver caused by mistaken rotation of the hand lever in the operation process of the driver is avoided.

The invention discloses a mixed tower steel cable system parametric modeling method and system based on multi-body dynamics, and relates to the technical field of wind power generation. The method comprises the following steps: creating parameter points at the center of each end face of a concrete section according to geometric parameters, and establishing a mixed tower three-dimensional model; correcting the mass of each section of the mixing tower according to the material density of the mixing tower; simulating the characteristics of pressure resistance and non-tension resistance of the mixed tower, and establishing a contact and bonding relationship between concrete sections of the three-dimensional model of the mixed tower; obtaining design parameters of a steel cable in the mixed tower, constructing a steel cable parameterized model, and combining the steel cable parameterized model with the mixed tower three-dimensional model to obtain a mixed tower steel cable system parameterized model; and performing dynamic simulation on the operation condition of the fan to obtain a time domain response result of the parameterized model of the mixed tower steel cable system. According to the invention, the response characteristic analysis of the mixing tower under multiple working conditions and multiple structures is realized.

The invention relates to the technical field of cross-linked polyethylene cable accessories, and discloses a cross-linked polyethylene insulated cable overhead installation device which comprises a wire supporting rod, a hoisting steel cable, a cross-linked polyethylene insulated cable and a driving assembly, the driving assembly comprises a steel cable clamping block and a cable clamping block, and a steel cable pulley and a cable pulley which are vertically symmetrical are arranged in the driving assembly; a pushing assembly is arranged at the top of the steel cable clamping block and comprises a supporting transverse plate, a first telescopic rod, a rectangular frame, an upper supporting rod and a lower supporting rod, and locking clamps are sleeved outside the supporting transverse plate, the first telescopic rod, the rectangular frame and the upper supporting rod. When the driving assembly is pulled, the roller encoder measures the distance and controls the distance; the pushing assembly drives step by step, the steel cable clamping blocks are fixed firstly, then the cable clamping blocks are pushed by the same distance and then fixed, the clamps are pulled in a matched mode to be tightened, the device achieves accurate control over the distance between the clamps and the looseness of the cables, the cables are prevented from being too loose and abraded or too tight and damaged, the water blocking function is protected, the line stability is improved, and the operation and maintenance cost is reduced.

The utility model discloses a bridge steel cable flaw detection device, which relates to the technical field of bridge steel cable flaw detection, and comprises an adjusting assembly arranged on the outer ring of a steel cable body, the adjusting assembly comprises two climbing wheel carriers, and the two climbing wheel carriers are respectively arranged on the outer ring of the steel cable body. By means of the adjusting assembly, when the installation box is inclined, the position of the installation box can be adjusted again, the installation box does not need to be taken down for adjustment in the adjusting process, the detection efficiency is improved, flaw detection shooting can be conveniently conducted on a steel cable body from multiple directions and different distances, and the detection efficiency is improved. The flaw detection effect is conveniently improved, and the problems that when a traditional bridge steel cable flaw detection device is used, the position of the flaw detection device is difficult to adjust, secondary detection is possibly needed subsequently, the detection efficiency is affected, and the flaw detection device can only detect and shoot a steel cable from one direction and is low in flexibility are solved.

The invention relates to the technical field of building roof hoisting, and discloses a large public building roof daylighting roof steel beam multi-mode collaborative hoisting and translation mounting device which comprises four steel plates, a sliding rail is fixedly mounted between every two steel plates, and a first chain block is mounted at one end of each sliding rail; the upper ends of the sliding rails are slidably connected with a supporting frame, second chain blocks are installed in the supporting frame, the lower ends of the two second chain blocks are connected with an adjusting device, steel cables are arranged at the two ends of the adjusting device, and the adjusting device comprises a shell installed at the lower ends of the second chain blocks. Unstressed steel cables are wound to the outer surface of the rotating rod through rotation of the rotating rod, then the shell drives the rack plate gear and the steel cables to gradually pull the steel beam to be lifted upwards, so that the situation that the steel beam deviates on the ground due to the fact that the two steel cables are pulled to the steel beam to be uneven in stress is reduced, and safety is improved.

The invention discloses an aircraft control surface loading device and a test method, the device comprises a clamping mechanism, a fan-shaped mechanism and a steel cable, the clamping mechanism comprises a first clamping part and a second clamping part, and the first clamping part and the second clamping part cooperate with each other to clamp a control surface; the control surface comprises a first surface and a second surface which are oppositely arranged, the first surface and the second surface are connected to the edge of the control surface, the first clamping part abuts against the first surface, and the second clamping part abuts against the second surface and the edge; the circle center of the fan-shaped mechanism is fixed to the clamping mechanism, a mounting piece is arranged at one end of the arc-shaped edge of the fan-shaped mechanism, the fan-shaped mechanism comprises a guide groove, and the guide groove is formed along the arc-shaped edge of the fan-shaped mechanism; the steel cable is connected with the installation piece and pulled, at least one part of the steel cable is located in the guide groove, and the sector face of the sector mechanism is parallel to the plane where the deflection track of the control plane is located. The testing method comprises the step of loading the device on the control surface for testing. The device is easy to mount and dismount on the control surface of the aircraft.

The invention discloses a transferring and hoisting structure for engineering construction and a construction method of the transferring and hoisting structure, and relates to the technical field of engineering construction. The device comprises two groups of cross beams which are distributed front and back; the crown block assembly comprises a middle plate, a movable plate, a top plate, a mounting wheel and a driving wheel; the hoisting assembly comprises a fixed plate fixedly connected to the lower portion of the movable plate, a first winding roller rotationally connected to the fixed plate and a winding steel cable, the lower surface of the fixed plate is fixedly connected with three sets of mounting boxes in a circular array with the winding steel cable as the axis, and the interiors of the three sets of mounting boxes are rotationally connected with second winding rollers; the three second winding rollers are wound with stable steel cables, and the bottom ends of the stable steel cables are fixedly connected with connecting frames. According to the winding steel cable hoisting device, the three auxiliary steel cables distributed in a conical shape exert the pulling force effect in three directions on the winding steel cable, so that the hoisting stability of the winding steel cable is improved, meanwhile, the winding steel cable is conveniently, automatically and regularly smeared with lubricating oil, and mounting and dismounting are convenient.

The utility model discloses a tower top tool of a wind power mixing tower, which comprises a steel cable, a tower drum, a support and a fixing part, the tower drum is in a hollow cylinder shape, first cable penetrating holes are arranged on the circumferential surface close to the inner wall of the tower drum at equal angles, embedded bolts are arranged on the circumferential surface close to the outer wall of the tower drum at equal angles, and a saddle-shaped connecting block is arranged at the bottom of the support. The support is fixedly connected with the tower drum through the connecting block, the fixing part is arranged in the center of the tower drum and fixedly connected with the tower drum, and a hoisting pulley is arranged in the center of the fixing part.

The invention discloses a steel cable surface wear detection method and device based on an improved YOLOv8n-seg model, and relates to the field of steel cable surface wear detection.The method comprises the steps that a steel cable surface image is collected, the real wear area and degree are marked, and a wear image data set is constructed; improving a YOLOv8n-seg model structure, replacing a traditional convolution module in a backbone network with an adaptive kernel convolution module, inserting a convolution self-attention mechanism module in front of a fast spatial pyramid pooling module, and introducing a multi-scale convolution attention module into a neck network; training an improved model by using the wear image data set; and inputting a to-be-detected image into the trained improved model, and outputting a predicted wear area and degree. By improving the structure of the YOLOv8n-seg model, the problems of missing detection and false detection of a traditional method are solved, and high-precision and high-efficiency steel cable wear detection is realized.

The invention discloses a stabilizing device for steel plate welding, and relates to the technical field of welding, the stabilizing device for steel plate welding comprises a machine body, and further comprises a moving device, a fixing device and a butt joint device; wherein welding equipment is fixedly connected to the top of the machine body, a long groove is formed in the bottom of the inner wall of the machine body, the moving device comprises a storage rack, a welding plate, a vertical plate, a winding roller, a supporting rod, a steel cable, a rack, a rotating rod, an incomplete gear, a U-shaped plate, a rubber column, a handle, a long rod and wheels, and the wheels are movably connected to the inner side of the long groove; according to the stabilizing device for steel plate welding, when a third spring moves downwards, the third spring can drive a pressing plate to move downwards, at the moment, the pressing plate makes contact with a welding plate, when the pressing plate makes contact with the welding plate, the pressing plate can fix the welding plate, and the phenomenon that the welding plate deviates when welding equipment conducts welding can be effectively prevented.

The utility model discloses a crane lifting rope limiting device in the technical field of crane lifting hooks, which comprises an anti-falling mechanism, the anti-falling mechanism comprises a hook, the hook comprises a connecting end and a hook body, the tail end of the hook body is fixedly connected with the lower end of the connecting end, an assembly groove is formed in the hook in a penetrating manner, a winding disc is rotatably arranged in the assembly groove, and the winding disc is fixedly connected with the hook body. A rotating shaft is movably inserted into the winding disc, the two ends of the rotating shaft are sleeved with anti-disengaging pieces, the head end of the hook body is fixedly connected with a limiting block, and the ends, away from the rotating shaft, of the anti-disengaging pieces abut against the limiting block. The limiting mechanism comprises a torsional spring arranged on the winding disc in a sleeving manner; during use, when the torsion spring drives the winding disc and the anti-disengaging piece to deflect upwards, a steel cable is unwound, at the moment, the limiting piece loses tension, meanwhile, the limiting piece is pushed to move upwards through the first spring, at the moment, the lifting rope is conveniently limited through the limiting piece, the possibility that the lifting rope continuously shakes in the hook body is reduced, and the lifting rope is more convenient to limit.

The utility model generally relates to the technical field of photovoltaic power generation, and provides a cable frame connecting structure and a flexible photovoltaic support for mountainous regions. The cable frame connecting structure comprises a switching base plate, a first surface of the switching base plate is connected with a supporting oblique beam of a flexible photovoltaic support, a second surface, opposite to the first surface, of the switching base plate is provided with a steel cable, the switching base plate is provided with a guide bend, and the guide bend is configured to adjust the trend of a cable body of the steel cable; the cable clamp is arranged on the second face of the transfer base plate, the steel cable is arranged between the cable clamp and the transfer base plate, and the cable frame is configured to fix the steel cable; according to the utility model, the guiding bend is arranged on the cable frame connecting structure, so that the flexible assembly of upward bending or downward bending of the steel cable of the flexible photovoltaic support in the plane direction can be realized. The main supporting stand column is hinged to the auxiliary supporting stand column, and the auxiliary supporting stand column is provided with the telescopic adjusting structure, so that the flexible photovoltaic support can flexibly adapt to different terrains, and the application feasibility of the flexible photovoltaic support in mountain regions is greatly improved.

The invention belongs to the technical field of aircraft maintenance, and particularly relates to wing overturning equipment. The equipment comprises a frame (1), a sliding rail (2), a speed reducer (3), a steel rope (4) and a connecting frame (6), one end of the sliding rail (2) is hinged to the frame (1), the other end of the sliding rail (2) is connected to the top end of the frame through a spiral transmission structure, a guide wheel (15) is arranged on the sliding rail (2) in a sliding mode, the speed reducer (3) is fixed to the guide wheel (15), and the speed reducer (3) comprises a first rotating mechanism, a second rotating mechanism and a gear shifting mechanism (348). The gear shifting mechanism (348) is used for connecting the motor (17) to the first rotating mechanism or the second rotating mechanism, and the first rotating mechanism is connected with the wing through the connecting frame (6); the second rotating mechanism drives the speed reducer to slide on the sliding rail (2) through the steel cable (4). The wing overturning device can overturn wings, and is easy to operate, safe and reliable.

The invention provides a sucker bridge crane for hoisting pipe sheets. The sucker bridge crane comprises a bridge frame, a hoisting mechanism, a sucker hanger and an anti-swing mechanism, the bridge frame is connected to the steel rail and can move along the steel rail, and the lifting mechanism is installed on the bridge frame, connected with the suction cup lifting tool through a steel rope and used for driving the suction cup lifting tool to ascend and descend; the anti-swing mechanism comprises a first anti-swing connecting piece fixedly installed at the bottom of the lifting mechanism and a second anti-swing connecting piece installed at the top of the suction cup lifting tool, and the first anti-swing connecting piece and the second anti-swing connecting piece are connected, can relatively slide in the vertical direction and are relatively limited in the horizontal direction. When the lifting mechanism drives the suction cup lifting appliance to ascend and descend, the first anti-swing connecting piece and the second anti-swing connecting piece can relatively slide in the vertical direction, and ascending and descending of the suction cup lifting appliance are not affected; meanwhile, due to the fact that the first anti-swing connecting piece and the second anti-swing connecting piece are relatively limited in the horizontal direction, when the bridge moves, the suction cup lifting appliance cannot swing left and right, lifting safety is guaranteed, and lifting efficiency is improved.

The invention relates to the technical field of pressure vessel main body welding, in particular to an alignment welding assembly for quickly welding a boiler barrel of an industrial boiler container, which comprises a first driving support piece, a second driving support piece is fixedly arranged on one side of the first driving support piece, and a left position control unit is fixedly arranged on a connecting seat on the left side of the first driving support piece; and a left position control unit is fixedly installed on the ground connecting base on the right side of the second driving supporting piece, a right position control unit is fixedly installed on the ground connecting base on the right side of the second driving supporting piece, a steel rope set is arranged between the left position control unit and the right position control unit, an inner welding assembly is installed in an inner barrel cavity of the boiler barrel, and an outer welding assembly is installed below the boiler barrel. According to the device, the left position control unit and the right position control unit are adopted to drive the steel rope set to rotate, the outer welding assembly is driven to quickly shift and weld along the longitudinal seam of the boiler barrel, and meanwhile, the inner welding assembly and the outer welding assembly can synchronously work to synchronously weld the inner and outer longitudinal seams of the boiler barrel; when the annular butt joint seam is welded, the boiler barrel and the pipe base synchronously rotate to be matched with the outer welding assembly and the inner welding mechanism, and rapid welding is achieved.

The utility model discloses a static calibration and calibration platform for a precise six-dimensional force sensor. The static calibration and calibration platform comprises a detection platform, and a calibration clamping table, a calibration and calibration module and a plurality of counterweight modules which are arranged on the detection platform. And the counterweight modules are respectively arranged at the calibration ends of the calibration module. The calibration module comprises a force loading tool, an X-axis force calibration assembly, a Y-axis force calibration assembly and a Z-axis force calibration assembly. The force loading tool is fixed on the top of the tested six-dimensional force sensor. The force loading tool comprises a sensor chuck and a cantilever beam frame fixed on the sensor chuck. According to the utility model, the force loading tool is matched with the steel cables and the counterweight modules in multiple directions to form a multi-direction and multi-dimensional force-torque system calibration system, the design is precise, the structure is simple and easy to realize, a worker can quickly complete the installation and detection calibration of the detected six-dimensional force sensor, the detection precision is ensured, and the detection efficiency is improved. The device structure is simplified and the device cost is reduced.

The invention relates to the technical field of stress monitoring, in particular to a steel cable stress high-precision monitoring system in the stable hoisting process of a box girder, and the system comprises the following steps: collecting stress data and inclination angle data of each steel cable for hoisting the box girder at each collection moment; dividing each axisymmetric steel cable; acquiring a stress interference factor at each acquisition moment; acquiring an external force interference moment based on the stress interference factor; obtaining a weight coefficient and a power coefficient of the inclination angle data at each external force interference moment; acquiring real stress data at each acquisition moment; and obtaining a stress disorder factor at each acquisition moment, and carrying out high-precision monitoring on the stress of the steel cable in the stable hoisting process of the box girder. The precision of monitoring the stress of the steel cable in the stable hoisting process of the box girder is improved.

The utility model discloses an easy-to-disassemble steel structure construction platform which comprises a plurality of rows of first frame bodies and second frame bodies, the first frame bodies and the second frame bodies enclose a steel pylon and are connected with each other, and the first frame bodies and the second frame bodies are respectively connected with the steel pylon through bolts. The first frame body comprises a first supporting plate in bolted connection with the steel pylon and provided with a plurality of first connecting screw holes and a first walkway located at the upper end of the first supporting plate, and the second frame body comprises a second supporting plate in bolted connection with the steel pylon and provided with a plurality of second connecting screw holes and a second walkway located at the upper end of the second supporting plate. A first guardrail and a second guardrail are arranged on the upper portion of the first walkway and the upper portion of the second walkway respectively, the first walkway is further provided with a climbing plate, the climbing plate is connected with a ladder stand arranged in the vertical direction in a penetrating mode, and the ladder stand is connected to other adjacent first frame bodies in the height direction in the vertical direction. According to the utility model, adverse effects on the steel pylon can be reduced, the construction platform is convenient to mount and dismount, the construction efficiency of the steel pylon is improved, the safety is high, and economy and practicability are realized.

The invention relates to the technical field of corridors, and particularly discloses a high-stability corridor structure which comprises a corridor, the corridor is arranged between two buildings, profile steel is arranged on the inner sides of pouring beams of the buildings, connecting sleeves are arranged on the outer sides of the pouring beams, and connecting plates matched with the connecting sleeves are welded to the two ends of the corridor; the corridor is connected with a building in multiple modes, the multiple pieces of profile steel and the pouring beams serve as a connecting foundation, the corridor and the building are firmly connected together through the cable-stayed steel cables, the connecting sleeves connected with the corridor, the U-shaped inserting plates and a large number of bolts, and therefore the stability performance of the corridor is improved; according to the corridor, the pressure detection modules are arranged on the cable-stayed steel cables and the U-shaped insertion plate, when the corridor is loosened, the tightness degree can be automatically adjusted through the adjusting box arranged on the corridor, early warning can be given out, maintenance personnel can be reminded, and great safety is brought to use of the corridor.

The invention discloses a photovoltaic field abrupt slope operation protection device which comprises a steel cable fixing assembly, the steel cable fixing assembly comprises two mounting assemblies which can be vertically arranged on a pile foundation or the ground, and a first steel cable and a second steel cable which are distributed up and down are transversely arranged between the two mounting assemblies; the number of the advancing assemblies is two, the advancing assemblies are slidably arranged between the first steel cable and the second steel cable, each advancing assembly comprises a frame body, a first advancing wheel is rotatably arranged on each frame body, and each first advancing wheel is in sliding contact with the top of the corresponding first steel cable; the two second advancing wheels are rotatably and transversely arranged on the two sides of the second steel cable, and the second advancing wheels are in sliding contact with the second steel cable; the two limiting assemblies are arranged at the positions, corresponding to the first advancing wheel and the second advancing wheel, of the frame body correspondingly. It can be ensured that a worker can safely, stably and conveniently work on the abrupt slope, and therefore actual use is facilitated.

A weightlifting system includes a frame with lower, middle, and upper pulley stations mounted therein. A load attachment structure is provided within the system. A cable-pulley system includes a plurality of fixed pulleys mounted to the frame, first and second moveable pulleys, and a floating load pulley mounted to the load attachment structure. A plurality of cables is collectively routed through the first and second movable pulleys, the plurality of fixed pulleys, the floating load pulley, and the lower, middle, and upper pulley stations. When a first pulling force is applied to a first cable end accessible from the lower pulley station, the first movable pulley and the load pulley translate. When a second pulling force is applied to a second cable end accessible from the upper pulley station, the second movable pulley and the load pulley translate. When a third pulling force is applied to a third cable end accessible from the middle pulley station, only the load pulley translates.

The utility model discloses a tensioning device for a long-span large-section slow-bonding prestressed beam, which relates to the technical field of bridge construction, and comprises an anchor backing plate and a steel strand, an anchor plate is clamped on the end face of the anchor backing plate, a through hole for the steel strand to pass through is formed in the anchor plate, two clamping pieces for clamping the steel strand are clamped in the through hole, and the steel strand is clamped in the clamping pieces. A limiting plate is clamped to the end face of the anchorage device plate, a contraction mechanism used for applying thrust to the clamping pieces is arranged in the limiting plate and comprises a push ring, a spring and a sliding pipe, a sliding groove is formed in the contraction mechanism, the sliding pipe is installed in the sliding groove in a sliding mode, the push ring is fixedly connected to one end of the sliding pipe, and the spring is connected to the outer side wall of the sliding pipe in a sleeving mode. The clamping pieces are pushed through the shrinking mechanism, the clamping pieces located in the same through hole are shrunk into the through hole, the shrunk clamping pieces make contact with the outer side wall of the steel strand, and the problem that part of the clamping pieces of an existing tensioning device cannot make contact with the outer side wall of a steel cable, and then the clamping pieces cannot fixedly clamp the steel cable after the steel cable is shrunk is solved.

The invention discloses a flexible photovoltaic support based on a large-span steel cable structure, and relates to the technical field of flexible photovoltaic supports. Comprising two main supporting pieces which are symmetrically distributed, two steel cables which are symmetrically distributed are jointly and fixedly connected between the two main supporting pieces, and the two steel cables are jointly provided with a plurality of photovoltaic panels; the mounting seat is arranged between the two main supporting pieces; the two fixing columns are symmetrically distributed and are fixedly connected to the mounting seat; the two second supporting frames are symmetrically distributed and arranged on the adjacent fixing columns respectively, sliding grooves are formed in the second supporting frames, the sliding grooves of the second supporting frames are slidably connected with fixing pieces, the fixing pieces are fixedly connected with elastic liquid bags, and the fixing pieces are slidably connected with extrusion rings. Vibration of the steel cable is buffered through deformation of the extrusion rings and deformation of the elastic liquid bag, the vibration amplitude of the steel cable is reduced, dynamic stress superposition of the steel cable at the adjacent extrusion rings is weakened, the fatigue effect is relieved, and the stability of the overall structure is improved.

The utility model relates to the technical field of railway engineering, and discloses a protective net used when dismantling a bridge across a railway, comprising a crossbeam and a steel cable net installed on the pier of the bridge to be dismantled; the pier of the bridge to be dismantled is used as a fulcrum to tension the protective net under the bridge body, and the protective net can buffer and descend when it catches the falling blocks, effectively reducing the impact effect and destructive force of the falling blocks. The protective net uses the piers and pier columns of the bridge to be dismantled as pillars, making full use of existing structures, which is convenient and fast. The protective net has the characteristics of simple structure, convenient assembly, low comprehensive cost, short installation and disassembly time, etc., and provides a simple and practical device for protecting the existing railway under the bridge to be dismantled.

The utility model belongs to the technical field of bridge maintenance, and particularly relates to a climbing device convenient for cable-stayed bridge steel cable detection, which comprises a rope climbing mechanism and a positioning component connected to one end of the rope climbing mechanism, a plurality of rotating wheels are arranged in the rope climbing mechanism, the rotating wheels are connected with a motor I, and the motor I drives the rotating wheels to rotate and drives the device to climb on a steel cable. The positioning assembly comprises a sliding plate, a positioning piece and a connecting plate, an axially-arranged groove is formed in the connecting plate, the sliding plate is arranged in the groove in a sliding mode, a cavity for containing the positioning piece is formed between the connecting plate and the sliding plate, the sliding plate slides along the groove to open the cavity, and therefore the positioning piece in the cavity is released. According to the steel rope marking device, the positioning piece has elasticity, the positioning piece is placed in the cavity, the top plate and the cavity are compressed and stretched through the shapes of the positioning piece and the top plate, and when the sliding plate slides out, the positioning piece rebounds and pops out of the connecting plate to the surface of the steel rope for marking.

The utility model relates to a portable transportation platform for photovoltaic modules in abrupt slope mountains. The portable transportation platform for the steep slope mountain photovoltaic module comprises a rail and a transportation mechanism, and the transportation mechanism is installed on the rail in a sliding mode. The rail comprises a main ladder, an auxiliary ladder and a connecting ladder, the main ladder and the auxiliary ladder are detachably installed at the two ends of the connecting ladder respectively, adjustable supporting legs are installed at the bottom of the connecting ladder, and positioning pulleys are installed at the ends of the auxiliary ladder. The conveying mechanism comprises a winch and a movable frame, the winch is installed on the main ladder and connected with a steel rope, the steel rope bypasses a positioning pulley on the auxiliary ladder and is connected with the movable frame, the movable frame is arranged in the rail in a sliding mode, and the assembly conveying platform is fixedly installed on the movable frame. According to the invention, the installation position of the photovoltaic module and the transportation position of the photovoltaic module can be synchronized, and the applicability of the device is improved; the risk of manual carrying on the large-gradient terrain is reduced, and meanwhile the installation efficiency is improved.

The utility model provides a driving device for a movable open-type sunlight greenhouse, which is a driving device for the operation of a heat-insulating material of the movable open-type sunlight greenhouse, and the sunlight greenhouse is changed from an original fixed heat-insulating material roller shutter type to a movable heat-insulating material open type, so that the driving mode of the sunlight greenhouse is different from the original mode. The driving assembly drives the traction steel wire rope to reciprocate on the steel wire rope supporting piece and the steering piece, the traction steel wire rope is connected with the heat preservation material, and the traction steel wire rope moves to drive the whole heat preservation material to operate, covers a front slope of the greenhouse during heat preservation and moves to a rear support of the greenhouse during lighting. The driving device drives the opening and closing of the greenhouse thermal insulation material to achieve the purposes of thermal insulation and lighting.

The utility model relates to the technical field of bicycle frame detection, in particular to a bicycle frame collision detection device which comprises a track support, a collision support and a movable supporting plate, the lower end of the movable supporting plate is slidably connected to the upper end of the track support, and the end of a steel cable is connected to the front end of the movable supporting plate. The device has the beneficial effects that the rail support is arranged and can be used for movably placing the movable supporting plate, the vehicle-mounted bicycle frame is fixed to the movable supporting plate, a bicycle is fixedly placed on the vehicle-mounted bicycle frame, the drive motor drives the steel rope to be tightened, and the movable supporting plate is driven to move on the rail support at a constant speed; after inertial collision with the collision support is generated and the vehicle stops, the state of the frame and the bicycle can be detected, whether loosening and damage occur or not can be detected, detection operation is facilitated, the collision support can move to adjust the collision distance, the device can adapt to collision tests of different distances, different types of materials can be changed at collision points, and different collision effects can be simulated.