65results about How to "Avoid turning around" patented technology

The invention discloses a multifunctional separating power-assisted wheelchair. The multifunctional separating power-assisted wheelchair is characterized in that the wheelchair comprises a frame body and a transfer rack capable of being separated from the frame body; the frame body comprises a wheelchair frame, a seat plate which is arranged on the wheelchair frame, traveling wheels which are arranged on the two sides of the rear portion of the wheelchair frame, and supporting legs which are arranged on the two sides of the front portion of the wheelchair frame and can be overturned or telescoped; a notch is formed in the front portion of the seat plate; the transfer rack comprises two vertical rods which are fixedly connected through a cross beam, front wheels which are arranged at the bottoms of the vertical rods, armrest arms which are arranged on the tops of the vertical rods, two front rods which are arranged on the front portions of the vertical rods respectively, wheels which are arranged at the bottoms of the front rods, and a supporting plate which is fixedly arranged on the rear portion of the cross beam. When the transfer rack and the frame body are integrally assembled, the supporting plate is inserted in the notch in a matched mode. The multifunctional separating power-assisted wheelchair is of a detachable separating structure, and the front half portion of the wheelchair can be separated from the frame body to achieve an independent moving and bearing function.

The invention belongs to the technical field of coal mine underground support, and particularly relates to coal mine return air crossheading roadway non-repetitive supporting outfit. The problem thatduring existing coal mine underground temporary support, repetitive supporting exists, and the damage to a top plate is accelerated to different degrees is solved. The coal mine return air crossheading roadway non-repetitive supporting outfit comprises a single-straddle-type supporting device and a crossheading supporting device carrier, the single-straddle-type supporting device comprises a crossbeam and a stand column which can stretch out and draw back, the crossheading supporting device carrier comprises a trackless explosionproof rubber-tied vehicle, a lifting platform and a rotating andclamping device, the rotating and clamping device is arranged on the lifting platform and can act on the single-straddle-type supporting device, through lifting, the single-straddle-type supporting device is connected with the top and separated from the top, after being separated from the top, the single-straddle-type supporting device is rotated by a limited angle and clamped through the rotating and clamping device, and then the crossheading supporting device carrier carries out carrying. By means of the coal mine return air crossheading roadway non-repetitive supporting outfit, a reliableand flexible supporting condition is created for safely and efficiently mining of a fully-mechanized coal mining face, non-repetitive supporting of the top plate can be achieved, and the integrity ofthe top plate is guaranteed; meanwhile, the coal mine return air crossheading roadway non-repetitive supporting outfit is significant in completing the mechanized mining technology of a tunneling face, increasing the mining speed and improving the production efficiency.

The invention provides a retractable cantilever goods shelf. The retractable cantilever goods shelf facilitates goods taking of a forklift, and meanwhile reduces the width of a passage and improves the space utilization rate of a goods house. The retractable cantilever goods shelf comprises a cantilever goods shelf main body and is characterized by also comprising slide rails and movable shelves, wherein the slide rails are transversely mounted on both sides of the cantilever goods shelf main body, and the movable shelves are mounted on the slide rails. The inside of every slide rail is provided with a pulley set, and the bottom of every movable shelf is provided with a slide groove corresponding to the corresponding slide rail; the slide rail on every layer is connected with a transmission shaft which can drive the corresponding movable shelves to move transversely; the transmission shaft at the top end of the cantilever goods shelf body is driven by a hand mechanism at the lower end of the cantilever goods shelf body, and the transmission shafts are mounted inside the slide rails and provided with driving wheels.

The invention relates to an auxiliary hoisting device special for a special-shaped building component and a hoisting method thereof, and relates to the field of hoisting tools. The auxiliary hoistingdevice special for the special-shaped building component comprises a shoulder pole beam, two main hoisting ropes are arranged on one side in the length direction of the shoulder pole beam, a pluralityof hoisting mechanisms are arranged on one side, far away from the main hoisting ropes, of the shoulder pole beam, the hoisting mechanisms comprise auxiliary hoisting ropes rotationally connected with the shoulder pole beam, an auxiliary plate is commonly connected to one ends, far away from the shoulder pole beam, of the multiple auxiliary hoisting ropes, the auxiliary hoisting ropes are rotationally connected with the auxiliary plate, two hooking ropes are arranged on one side, far away from the auxiliary hoisting ropes, of the auxiliary plate, the two hooking ropes are arranged at two endsin the length direction of the auxiliary plate in a rowed mode, loop buckles are arranged at two ends of the hooking ropes, and the middles of the length direction of the hooking ropes are in slidingconnection with the auxiliary plate. According to the auxiliary hoisting device and the method, the two ends of the auxiliary hoisting ropes are respectively rotationally connected to the shoulder pole beam and the auxiliary plate, so that interference among the multiple hoisting mechanisms is avoided when a heavy object rotates or deflects at a fixed point, and the phenomenon that the heavy object rotates after steering is avoided as much as possible.

The invention discloses a passenger car dead zone auxiliary monitoring system and method. The passenger car dead zone auxiliary monitoring system comprises a six-channel camera, a monitoring and processing unit, a vehicle-mounted computer ECU, a 360-degree panoramic looking around system, a display screen and a central warning processor, the six-channel camera is used for collecting image information, and the six-channel camera is connected with the monitoring and processing unit. According to the dead zone auxiliary monitoring system, omni-directional dead-zone-free monitoring video can be carried out on the outside of a vehicle, a combined picture of the display screen of the vehicle shifts functions automatically, a driver can be enabled to obtain dead zone image information more directly, the front secondary dead zone safety risk brought by wide-angle turning of the driver is avoided, and meanwhile, the fatigue strength caused by the driver frequently turning to watch a plurality of rearview mirrors and thinking behaviors is reduced. According to the passenger car dead zone auxiliary monitoring system and method, monitoring video is carried out on the outside of the vehicle inan omni-directional dead-zone-free mode through the combined monitoring of the 360-degree panoramic looking around system and the six-channel camera, and complex movements such as turning and turningaround from right front / left front areas of rear wheels to the front 5-10 meters of a vehicle head can be solved.

The invention discloses an integrated intelligent synchronous bidirectional fasten type furniture plate body connecting piece. The furniture plate body connecting piece is characterized by comprisingof a shell, a connecting rod and an eccentric wheel, wherein the shell can be inserted into a plate body, a connecting rod capable of sliding in the shell, the eccentric wheel capable of stable rotating in the shell; the connecting rod is provided with a connecting head cooperated and connected with the eccentric wheel; and an expansion assembly capable of being stressed outwards is arranged on the shell, a top pressing assembly cooperated with the expansion assembly is arranged on the connecting rod. The integrated intelligent synchronous bidirectional fasten type furniture plate body connecting piece is convenient to install, high in connection reliability and good in installation stability.

The invention discloses a spinning dust-removing cotton fluffer which comprises a cotton fluffer body. A first roller is arranged on one side of the top of the cotton fluffer body, an induced draft fan is arranged inside the first roller, a vent pipe is arranged at the top of the induced draft fan, a hollow plate is arranged on the outer surface of the first roller, a conveying belt is arranged onone side of the first roller, a drying pad is arranged at the bottom of the conveying belt, a second roller and a pressing roller are horizontally and sequentially arranged at the top of an operatingboard, the first roller is in transmission connection with a motor in the operating board through a rotating shaft, a discharging belt is welded on the outer side of the operating board, a dust outlet pipe is welded at the bottom of the first roller, a dust separating pipe is welded on one side of the dust outlet pipe, a dust collecting bin is welded at the bottom of the dust outlet pipe, and a partition plate is welded on the inner surface wall of the dust collecting bin. The cotton fluffer is simple and reasonable in integral structural design, safe and stable in running, flexible and convenient to operate and high in practicability, and has strong self-protection capacity.

The invention discloses a municipal engineering drainage channel construction fixing device. The municipal engineering drainage channel construction fixing device comprises a moving seat, wherein an adjusting limiting assembly is mounted in the middle of the top end of the moving seat; the adjusting limiting assembly comprises a threaded rod, a connecting column, a nut, a connecting rod, a fixing frame, a connecting rack, a fixing rod, a positioning plate, a rotating block, a fixing column, a threaded column and a connecting block; the middle of the top end of the moving seat is rotatably connected with the threaded rod; the outer side of the threaded rod is in threaded connection with the connecting column; and the outer side of the threaded rod is in threaded connection with the nut at a position which corresponds to the bottom end of the connecting column. By the adjusting limiting assembly, the rotating block, the fixing column, the threaded column and the connecting rack, a worker can adjust the angle of the positioning plate conveniently, therefore, when the positioning plate is in contact with a wood plate, the inclination angle of the wood plate can be corrected, the circumstance that the wood plate has angle deviation in a fitting process is avoided, and the worker can fix the position of the positioning plate conveniently.

The modular furniture splicing fixture is characterized in that: it includes a plug-in board and a lock that cooperates with the plug-in board; the plug-in board has a main body; and the main body extends at least two Ribs; at least one lock hole is provided at the edge of each rib, and each lock hole is provided with a lock; the lock includes a cap that helps to twist the lock and a cap that prevents the lock from falling off The baffle of the flashboard is provided with lock teeth between the cap body and the baffle; the ribs are inserted between the cap body and the baffle, and the lock teeth only enter the lock hole through the lock with the smallest size, and screw The rear lock teeth of the cap body are displaced, and the lock buckle is fixed on the insert plate. The present invention is mainly applied to the splicing and fixing of modular furniture, and has the advantages of simple structure, convenient assembly and disassembly, reusability, high fixing strength, and stable fixing.

The invention relates to the technical field of engineering machines, and discloses a high-safety anti-backrolling device for the engineering machines. The high-safety anti-backrolling device comprises a base, supporting rods are fixedly arranged on the left side and the right side of the upper surface of the base, the upper ends of the two supporting rods are fixedly provided with U-shaped supporting frames respectively, a material supply roller and a material winding roller are arranged in the two U-shaped supporting frames respectively, and the two ends of the material supply roller and thetwo ends of the material winding roller are detachably provided with first rotary shafts respectively. The other ends of the first rotary shafts on the right side penetrate through the outer portionsof the corresponding U-shaped supporting frames and are fixedly provided with first belt wheels, a motor is fixedly arranged on the portion, between the two supporting rods, of the upper surface of the base, the tail end of an output shaft of the motor is fixedly provided with two second belt wheels, and the two first belt wheels are in transmission connection with the two second belt wheels through belts respectively. The high-safety anti-backrolling device for the engineering machines can automatically prevent the phenomenon that a fabric is rolled backwards, the labor intensity is low, thesafety is high, and the fabric production efficiency is improved.

Bi-directional five-drill-bit drilling type coal mining equipment is suitable for mining thin and extremely thin coal beds with coal bed dip angles of 0-25 degrees and protective coal beds and mainly comprises explosion-proof motors, hydraulic couplers, bidirectional output speed reducers, a bracket, a ventilation cylinder, double-acting hydraulic thrust oil cylinders, a transmission case, spiral drill bits, spiral drill rods and a moving frame, wherein two explosion-proof motors are symmetrically distributed on the two sides of the moving frame; the two explosion-proof motors are respectively connected with the bidirectional output speed reducers through the hydraulic couplers; the bidirectional output shafts of the bidirectional output speed reducers are respectively connected with the spiral drill rods; the spiral drill rods are connected with the spiral drill bits through the transmission case; the ventilation cylinder used for ventilation of a working face is connected with the middle of the moving frame; for the same drilling type coal mining machine, when the coal beds on one side are mined completely, and the coal beds on the other side can be mined directly on the basis of not adjusting the position of the whole drilling machine, so that the mining efficiency of the thin and extremely thin coal beds can be improved, the mining time is shortened and the mining cost is reduced.

The multifunctional ship shafting flange machining equipment comprises a base, a lifting rod is fixed to the upper end of the base, a machining table is fixed to the upper end of the lifting rod, a motor is fixed to the top of the base, a rotary table is fixed to an output shaft of the motor, and two drill bits are connected to the bottom of the rotary table through two adjusting mechanisms. A plurality of pressing grooves are formed in the upper end of the machining table, pressing mechanisms are arranged in the pressing grooves, a fixing sleeve is fixed to the upper end of the machining table, a center gear for driving a drill bit to rotate is fixed to the side wall of the upper portion of the fixing sleeve, and a liquid injection mechanism is arranged in the machining table. The method has the advantages that the position of the adjusting screw rod is set according to the specific machining drilling amount, so that the limiting position where the drill bit can reach is limited, the adjusting precision can be guaranteed under the condition that the thread pitch is determined, the machining precision is guaranteed, and the adjusting process is simple and reliable.

The invention provides a pig cage device capable of vertical expansion and contraction as well as transverse expansion and contraction. The pig cage device comprises a hydraulic lifting device, an automatic transverse expansion and contraction device arranged on the hydraulic lifting device, and a pig cage arranged on the automatic transverse expansion and contraction device, wherein the automatictransverse expansion and contraction device comprises a foundation tank body, an intermediate tank body and a pig cage bearing tank body, the foundation tank body is fixed on the hydraulic lifting device, the intermediate tank body is slidably connected with the foundation tank body and the pig cage bearing tank body separately, and the pig cage is slidably connected with the pig cage bearing tank body. The pig cage device capable of vertical expansion and contraction as well as transverse expansion and contraction provided by the invention is simple in structure, and is provided with the hydraulic lifting device, so that the pig cage after loading pigs and a transportation vehicle are of the same height, thus the pig cage can be transported onto the transportation vehicle from the groundsurface without cooperation of many people, and the labor is saved; and the pig cage device is provided with the automatic transverse expansion and contraction device, facilitates the pig cage to bein lap-joint onto the transportation vehicle, avoids feet of the live pigs from clamping in a gap between the pig cage and the transportation vehicle, thereby being capable of transferring the live pigs from the pig cage onto the transportation vehicle conveniently, and being convenient and rapid.

The invention discloses a buffering mechanism of a robot. The buffering mechanism comprises a base, a robot body is arranged at the top of the base, plug pins are arranged at the four corners of the bottom of the base, and the ends, close to the base, of the plug pins sequentially penetrate through the base and the robot body and extend to the top of the robot body. The robot body and the base areboth movably connected with the plug pins, and compression springs are arranged at the four corners of the top of the base. According to the buffering mechanism, by arranging the compression springs,vibration can be weakened through deformation force, the remaining vibration force can be transmitted into shock pads to be further eliminated, the effect of improving the stability of the robot bodyin running can be achieved through double buffering of the compression springs and the shock pads, and the problems that an existing welding robot is not provided with a buffering mechanism, in the driving process on a complex road, dry collision is likely to happen between internal components of the welding robot, and consequently the service life of the welding robot is shortened are solved.

The invention discloses an agricultural mechanical fertilizer applicator. The agricultural mechanical fertilizer applicator structurally comprises a storage box, a furrowing blade, a discharging mechanism, a machine body and a driver; the storage box is mounted at the upper end of the discharging mechanism; the furrowing blade is welded with the machine body; the driver is fixed at the upper end of the machine body; the discharging mechanism and the machine body are of an integrated structure; when the machine body makes a turn, the upper end of a stress plate can swing backwards through pushing force generated on the stress plate by the deviated fertilizer; therefore, a guide plate on the stress plate can guide the fertilizer back to the original position; the machine body is effectivelyprevented from throwing out the fertilizer outwards while quickly turning and turning around on the ground; the fertilizer can be guided into a collecting block through a hole in the upper portion ofan outer frame; an outward pushing frame can push a front-mounted plate forwards through the recoil, which is generated by pulling the collecting block to reset through a reset piece; and therefore, the front-mounted plate can extrude the fertilizer in the collecting block out of the space between two opening and closing plates.

The invention discloses a convertible rear axle of an electric truck. The convertible rear axle of the electric truck comprises a rear axle shaft sleeve, a rear wheel shaft is sleeved with the rear axle shaft sleeve, the two ends of the rear wheel shaft extend to the outer sides of the two ends of the rear axle shaft sleeve, rear wheels are installed at the two ends of the rear wheel shaft in a corresponding mode, a positive-negative drive motor is arranged on one side of the rear axle shaft sleeve, and the positive-negative drive motor is in transmission connection with the rear wheel shaft.According to the convertible rear axle of the electric truck, through the positive-negative drive motor, positive rotation or negative rotation of the rear wheel shaft can be conveniently controlled,wherein when the rear wheels rotate positively, the electric trunk runs forward, and when the rear wheels rotate negatively, the electric trunk runs backward, so that control is simple, use is convenient, and a u-turn of the electric trunk is avoided.

A concrete stirring and transporting all-in-one vehicle comprises a carrying platform; a crawler track walking device is fixed below the carrying platform, the concrete stirring and transporting all-in-one vehicle is characterized in that an oil cylinder support frame is fixed on the front end above the carrying platform, the front end is hinged to a bucket, the bucket is hinged to one end of a bucket oil cylinder, and the other end of the bucket oil cylinder is hinged to the oil cylinder support frame; the back end above the carrying platform is hinged to the bottom of a stirring bin with an opening in the upper part, a stirring device is arranged in the stirring bin, the stirring bin is hinged to one end of a stirring oil cylinder, and the other end of the stirring oil cylinder is hinged on the carrying platform; and a transmission belt device is arranged between the bucket and the stirring bin, the transmission belt device comprises a support part, and the two end parts of the support part are both hinged to a rotary shaft. Compared with the prior art, the concrete stirring and transportation all-in-one vehicle has the technical effects that the loading and unloading are respectively performed on the two end parts of the vehicle, the operation of turning around of the vehicle is avoided, and the concrete stirring and transportation all-in-one vehicle is more suitable for operation in a roadway.

The invention belongs to the technical field of wind power equipment, and particularly relates to an auxiliary device for replacing an impeller bearing of a wind turbine. The auxiliary device aims atsolving the problem that accidents frequently occur due to the fact that the gravity center is unstable due to the swing of an impeller when the huge impeller is lifted in the prior art. According tothe scheme, the auxiliary device comprises an inner supporting pipe fixed on the inner wall of a supporting tower pipe and a case shell rotationally connected to the top end of the inner supporting pipe, wherein a transmission shaft is rotationally connected to the middle of the case shell. According to the auxiliary device, when the head of the impeller needs to be disassembled in the using process, a U-shaped supporting rod is horizontally moved to support the roots of two impellers on the outer wall of the head of the impeller, then the head of the impeller can be slowly suspended and fixedat the original position by operating a manual hydraulic ejector rod, then the radial bearing force of a transmission rod can be disassembled, and at the moment, the bearing can be replaced.

The invention discloses an anti-skid retaining wall for a side slope. The anti-skid retaining wall comprises a dam body, bricks are laid on the outer surface of the dam body, a protective net cage is fixedly connected to the right sides of the bricks, a concrete layer located on the right side of the protective net cage is poured on the surfaces of the bricks, a floating anti-impact structure is arranged on the right side of the protective net cage, and the floating anti-impact structure is a connecting plate arranged on the right side of the protective net cage through a limiting structure. According to the anti-skid retaining wall for the side slope, the bricks and the protective net cage are arranged on the outer side of the dam body, secondary protection can be conducted on the dam body, the concrete layer can fix the bottom of the protective net cage, then the protective net cage is prevented from loosening after continuous scouring, meanwhile, the floating anti-impact structure can further block water flow, and the impact force of water flow can be used for generating electricity; and the problems that an existing slope retaining wall is single in structure and function and poor in anti-scouring capacity, and the safety and the service life of the dam body are seriously affected are solved.

The invention relates to the technical field of marine lamps, and particularly provides a ceiling lamp mounting bracket and a ceiling lamp. Theceiling lamp mounting bracket comprises a ceiling lamp body, a structural tube, a lifting rope, a rotating structure and a locking structure; a structural pipe is arranged over the ceiling lamp body; a lifting rope penetrates through the interior of the structural pipe in the axis direction; the bottom of the lifting rope is detachably connected with the ceiling lamp body through a locking structure; the lifting rope and the ceiling lamp body are connected or separated through the locking structure, mounting and dismounting of the ceiling lamp body are completed, and the ceiling lamp mounting bracket has the technical advantages of being simple in structure and convenient and fast to dismount and mount and is suitable for being used on a ship.

The invention discloses a detector used for positioning a power distribution network fault. The detector comprises a detection device, wherein a box cover is hinged to the top of the detection devicethrough a hinge pin; four corners of the left side of the detection device are independently fixedly connected with an idler wheel; the left side of the detection device is provided with a concave plate; and the left side of the detection device is fixedly connected with base plates positioned on the left side and the rear side of the concave plate. By use of the detector, a user drives the detection device to rotate to a certain degree through the base plates, the position of the concave plate is fixed through a fixing mechanism by a screw, so that the concave plate supports the detection device which achieves a proper angle, and therefore, the detector has the advantage that the angle of the detector for positioning the fault can be regulated, the problem that the user can not observe the display of the detector for positioning the fault from a proper angle since an existing detector for positioning the fault is only supported by the base plate but is not provided with a certain regulation mechanism can be solved, and the practicality of the detector for positioning the fault is improved.

The invention discloses a protective mechanism of a water spraying loom for textile. The protective mechanism includes a loom, the left and right sides of the top of the loom are both fixedly connected with supports, the tops of the supports are fixedly connected with a connecting frame, the top of the connecting frame is fixedly connected with a transmission mechanism, the left sides of the innerwalls of the supports are fixedly connected with an air cylinder, and the output end of the air cylinder is fixedly connected with a connecting rod. According to the protective mechanism of the waterspraying loom for textile, by arranging a protection cover, the contact area of the transmission mechanism and air can be reduced, the amount of dust adsorbed on the surface of the transmission mechanism is reduced, and the problems are solved that the top of an existing water spraying loom is not provided with the protective mechanism, a transmission part is mostly exposed to a work environment,and batting or dust contained in the air is easily adsorbed on the surface of the transmission part of the water spraying loom, and is in contact with lubricating oil on the surface of the transmission part to form oil stain; the protective mechanism of the water spraying loom for textile has the advantages of protecting the transmission part and the like.

The invention discloses a rope supporting wheel for an endless rope continuous traction winch. The rope supporting wheel comprises a rope supporting wheel body, and a support used in cooperation with the rope supporting wheel body. A bottom plate is arranged at the bottom of the support, vertical plates are fixedly connected to the front side and the rear side of the top of the bottom plate, and winding wheels are movably connected to the inner sides of the vertical plates. In the moving process, a supporting rod is extruded so that the supporting rod can rotate with a pin shaft in the connecting block as the axis, and the supporting rod is pulled by an elastic pulling rope and pushes the rope supporting wheel body to ascend when the rope supporting wheel body is separated from extrusion; the vibration borne by the rope supporting wheel body is counteracted through deformation force generated when the rope supporting wheel body is extruded and vibrated, so that the effect of improving the overall stability of the rope supporting wheel body is achieved, and the problems that an existing rope supporting wheel which is buffered through a tension spring is poor in vibration reduction performance and generally needs to be in sliding connection with a mounting frame, and the operation stability of the rope supporting wheel is seriously influenced are solved.

The invention relates to the technical field of composite flexible circuit boards, in particular to a composite flexible circuit board for a capacitive touch screen, which comprises a circuit board body. A fixing structure is arranged on the circuit board body; a connecting structure is arranged on the inner side of the fixing structure; a furling structure penetrates through the circuit board body; a retaining structure is arranged on the inner side of the furling structure; and the side surface of the circuit board body is provided with a layered structure. The connecting position of the circuit board body and the port is protected through the fixing structure, the interface is prevented from being damaged by pulling, the circuit board body is conveniently disassembled and assembled through the connecting structure, the circuit board body with the redundant length is wound through the winding structure, and the internal space of the device shell is saved. The condition that the rolled circuit board body rotates is avoided through the retaining structure, and a gap between the circuit board bodies which are arranged on the two sides in an overlapped mode is supported through the layered structure, so that attachment is avoided.

The invention discloses a digital factory production flow management and control device which comprises a management and control device body and a connecting end arranged on the front face of the management and control device body, the left side and the right side of the management and control device body are fixedly connected with connecting plates, and the inner sides of the connecting plates are movably connected with a two-way screw. The left end and the right end of the two-way screw penetrate through the connecting plates and extend to the outer sides of the connecting plates, the left side and the right side of the surface of the two-way screw are in threaded connection with positioning plates located on the outer side of the connecting plate, and the two sides of the bottom of each positioning plate are arranged to horizontally extend towards the outer side. By rotating the two-way screw and pushing the two positioning plates to move oppositely, the positioning plates can be bidirectionally clamped by using parallel bulges on two sides of the positioning plates, so that the mounting convenience of the management and control device body is greatly improved, and the problems that an existing management and control device is relatively single in connection mode with equipment, cannot meet the mounting requirements of various equipment, and severely influences the installation efficiency of the management and control device are solved.

The invention discloses a brake structure for water conservancy and hydropower equipment. The braking structure for the water conservancy and hydropower equipment comprises a support and a transmission shaft body located at the top of the support, transmission rods are movably connected to the left side and the right side of the front face of the support through hinge pins, a braking frame is installed on the inner sides of the transmission rods through a fixed structure, the braking frame is located on the two sides of the transmission shaft body, a sleeve plate is slidably connected to the inner side of the support, an extrusion block is fixedly connected to the top of the sleeve plate, a supporting wheel is fixedly connected to the top of the extrusion block, and the outer surface of the supporting wheel makes contact with the surface of the transmission shaft body. According to the braking structure for the water conservancy and hydropower equipment, supporting is carried out on the braking frame through supporting wheels, the braking stability is further improved, a braking device has the supporting and positioning effects in the non-working process, the function of the braking structure is increased, and the problems that an existing braking structure is single in structure and function, the effect that supporting is carried out on the transmission shaft is not achieved in the non-braking process, and application range of braking structure is seriously affected are solved.

The invention discloses a lower-layer overhead three-dimensional parking system below a double-column overpass. Relatively narrow space (7-9 M) below the double-column overpass is utilized to realizethree-dimensional parking at a parking road section. A plurality of groups of three-dimensional garages are arranged at intervals in an overhead mode in a separating belt below the double-column overpass. Vehicle access and parking are involved. Tail end type access is adopted by an access opening of a parking lot. Vehicles directly run to positions below the overpass from a road intersection, andlongitudinal perforation for vehicles and pedestrians in the parking lot is ensured. The vehicles are prevented from turning round in the parking lot, and safety is increased. Limited space below theoverpass is sufficiently used to provide more parking spaces. Road section resources are efficiently utilized.