29results about How to "Automatic separation" patented technology

The invention provides a laser cutting jig and laser cutting equipment, and belongs to the technical field of laser cutting. The laser cutting jig comprises a cutting table and supporting legs, a sliding rail is fixedly installed at the top of the cutting table, a moving table is installed on the surface of the sliding rail, a limiting mechanism is arranged at the top of the cutting table, and the limiting mechanism comprises a rotating disc, a sliding groove, a rolling wheel and a first hydraulic rod. By arranging the limiting mechanism, a user places a workpiece to be cut on four limiting seats and enables the workpiece to be located above rolling wheels, sliding friction between the workpiece and the limiting seats is converted into rolling friction through the arrangement of the rolling wheels, friction force is reduced, and after the limiting seats reach preset positions, the workpiece is cut by starting a first hydraulic rod; and the limiting plates are driven to move, the limiting plates are finely adjusted, so that the workpiece is clamped by the four limiting plates, and compared with the prior art, the clamping effect is more stable.

The invention discloses a pushing type clamping device with a one-way stroke lock. The pushing type clamping device comprises an assembling base, a pushing head, a rotating shaft, a ratchet wheel, a pawl and a posture switching mechanism. The pushing head can stretch forwards towards the assembling base so as to clamp a workpiece on the assembling base. The rotating shaft is in transmission connection with the pushing head through a transmission assembly, drives the pushing head to extend forwards when rotating forwards, and drives the pushing head to retract when rotating backwards; when the rotating shaft rotates, the ratchet wheel is driven to rotate synchronously; the pawl is movably arranged, and the pawl can move to be in an inserting posture and a separating posture; the posture switching mechanism can drive the pawl to move, so that the pawl is switched to be in an inserting posture or a separating posture; the posture switching mechanism is associated with the pushing head; and when the pushing head extends forwards to a limit position, the posture switching mechanism switches the pawl from the insertion posture to the separation posture so as to relieve the obstruction to the reverse rotation of the rotating shaft. According to the invention, the pushing mechanism can be ensured to push in place in the workpiece assembling process.

The invention discloses a high-stability povidone-iodine preparation, including polyvinylpyrrolidone K30 15.0%-25.0%, refined iodine 10.0%-12.0%, ethanol 20.0%-30.0%, potassium iodide 2.0-4.0%, organic acid 0.1-1.0%, organic acid salt 0.1-2.0%, surfactant 1.0%-3.0%, stabilizer 1.0%-5.0%, and the rest is water. Compared with the prior art, the invention has the beneficial effects that the povidone-iodine preparation obtained by the invention has good stability, low reaction temperature during the reaction, short total reaction time (only 4h-6h), high iodine yield (low degradation rate), can improve production efficiency, and reduce production energy consumption.

A stamping die for a metal can with an elastic bottom includes a first die for punching and stretching a stamped object, a second die for re-stretching (or multiple stretching) the stamped object, a third die for forming the bottom of the stamped object, a fourth die for expanding the diameter of the can mouth of the stamped object and re-forming the bottom, and a fifth die for trimming the stamped object. The third die of the present invention can prevent the edge of the mouth of the stamped object from being squeezed and deformed when the bottom ring groove is stamped through the air-avoiding groove, thereby making a prerequisite for realizing elastic deformation of the bottom. The fourth die can expand the diameter of the metal can mouth through the coordination of the diameter expansion groove and the lower diameter expansion die, so that the can mouth is further expanded. At the same time, after the bottom ring groove is stamped twice, the local strength and durability of the bottom stress area can be changed. In the process of expanding the diameter, a pulling force will also be generated on the bottom of the metal can, so that the bottom is adjusted in micro-distance, thereby changing the elasticity of the bottom, causing it to produce elastic deformation, so that it has resilience.

The present invention discloses an adjustable speed hydraulic chip transport device and method, wherein a servo motor is fixedly arranged at the upper front end of a shell, a chip discharge pipe is fixedly connected to the left bottom of the shell, and a baffle is fixedly arranged at the top of the shell, and the present invention relates to the field of chip transport technology. The adjustable speed hydraulic chip transport device and method, through the cooperation between the chip transport box mechanism, the extrusion mechanism, the guide inclined tube and the trapezoidal top block, transports the chip transport box mechanism containing metal waste chips to the direction of the chip discharge pipe. When the chip transport box mechanism passes between two extrusion mechanisms, the two extrusion mechanisms cooperate with each other, and the chip transport box mechanism can be driven to complete the multi-stage compression operation of the metal waste chips inside, effectively compressing the fluffy metal waste chips into blocks, saving subsequent storage space, and at the same time, the coolant attached to the surface of the metal waste chips can be squeezed out, which is convenient for subsequent processing and recycling.

The invention discloses a manufacturing device of a double-sided PCB, and belongs to the technical field of circuit board manufacturing. A driving motor drives a rotating shaft to rotate, so that a transmission wheel is matched with a conveying belt for transmission, and when a roller is extruded by an inclined surface of a driving plate, a piston presses gas into a hollow frame; therefore, the air bag is expanded so that the PCB can be automatically positioned, the PCB is located in etching equipment for etching operation, when the second gear and the second toothed bar are in transmission, the connecting cylinder drives the hollow frame and the PCB to turn over, the requirement for double-face automatic machining can be met, and when the second gear and the second toothed bar are separated, the PCB can be automatically positioned. By means of the structure, the weight bearing device can drive the hollow frame to turn over and reset, the PCB faces upwards, the PCB turns over to keep solution uniform filling and avoid condensation into beads, due to the fact that the diameter of the first gear is small, the first gear and the first toothed bar are in transmission, the rotating speed of the feeding frame can be increased, redundant solution can be rapidly separated, and the manufacturing quality of the PCB is improved.

The utility model discloses integrated head punch shape uses the blank near net shape forming auxiliary, integrated head belongs to the technical field of head manufacturing, the existing technology in which at least one of integrated head manufacturing's demoulding difficulty, production cycle, material utilization rate, complex structure forming difficulty etc.

The utility model discloses a ball-milling tank cover with a grinding medium self-separation function, which comprises a tank cover body, a plurality of strip-shaped holes are arranged on one side of the tank cover body side by side, the width of each strip-shaped hole is smaller than the diameter of a grinding ball, a fence is arranged on one side of the top surface of the tank cover body close to the outside, and the fence is of an arc-shaped guide plate structure. The ends, away from the center of the tank cover body, of all the strip-shaped holes are connected to the inner side of the fence. According to the utility model, grinding balls and slurry can be automatically separated without additionally arranging a filtering device or a manual screening step, the discharging process is greatly simplified, the discharging efficiency is improved, the enclosure is of an arc-shaped flow guide plate structure, the slurry flowing out of the strip-shaped holes can be guided and converged, the slurry flows out in a concentrated manner, and the working efficiency is improved. Secondary pollution caused by splashing of the slurry is avoided, the purity of the slurry is guaranteed, and subsequent processing is facilitated.

The utility model discloses an orange peeling machine, it includes electrically operated clamping jaw device, peeling device, baffle device and push device, wherein electrically operated clamping jaw device is used for driving electrically operated clamping jaw movement conveying orange to peeling device, peeling device contains the horizontal insertion needle device for inserting and fixed conveying orange and the rotary knife device for peeling orange, baffle device contains baffle and fourth drive mechanism, and the baffle has two working conditions, and the first working condition is inwards inclined, and the inwards inclined lower side is correspondingly provided with first conveying device for collecting the rind, and the second working condition is outwardly inclined, and the outwardly inclined lower side is correspondingly provided with second conveying device for collecting the peeled orange, and push device is used for driving push plate to push the peeled orange to fall into second conveying device. The utility model has high degree of automation, good peeling effect, can separate the rind and the pulp automatically.

The utility model discloses a photovoltaic silicon wafer cleaning separation mechanism, which comprises a storage rack, a storage cavity for stacking photovoltaic silicon wafers, and a discharge port on the side of the storage rack, which is in communication with the storage cavity; a conveyor belt assembly is arranged at the discharge port of the storage rack in a preset first direction, and is used for receiving and transmitting the photovoltaic silicon wafers output by the storage rack; a negative pressure generating device is arranged above the inside of the storage cavity, and is used for extracting the fluid above the photovoltaic silicon wafer stack in the storage cavity to form a negative pressure adsorption area; a separation device comprises at least one first nozzle unit for directing the output of fluid towards the side edge of the photovoltaic silicon wafer stack in the storage cavity; the negative pressure generated by the negative pressure adsorption area and the directional jet of the first nozzle unit work together to form a separation effect between adjacent photovoltaic silicon wafers; the utility model can solve the problem of poor separation efficiency and cleaning effect of the existing photovoltaic silicon wafer separation and cleaning equipment.

The utility model discloses a granulating chamber for granulating matte, which belongs to the technical field of copper smelting equipment and is characterized in that one side of a granulating chamber body is provided with a molten matte chute, a high-pressure gas spray pipe and a high-pressure water spray pipe, the inner wall of the granulating chamber body is fixedly connected with a collecting hopper, the bottom of the collecting hopper is provided with a flow guide pipe, and one end of the flow guide pipe is fixedly sleeved with a separation box; the granulating chamber comprises a separating box, a water collecting hopper is fixedly connected to the center of the separating box in a sleeving mode, a water outlet pipe is arranged at the bottom of the water collecting hopper, and a filter screen is arranged at one end of the water collecting hopper. Meanwhile, copper matte particles and water can be automatically separated, energy is saved, the production cost is reduced, the separated copper matte particles can be conveniently and downwards guided out through the spiral guide plate, the guide pipe and the discharge pipe, and the discharging efficiency of the copper matte particles is improved.

The utility model provides a die cutting tool for insulating composite mylar films, belongs to the technical field of mylar film production, and aims to solve the problems that during cutting, manual stripping one by one wastes a lot of time of workers, wastes time and labor, and affects the production speed and efficiency of the insulating composite mylar films. Placing the assembly; the bottom of the lifting control mechanism is connected with the placement assembly; the surface of the cutting frame is fixedly connected with a lifting control mechanism; the adsorption mechanism is connected with the cutting frame; the rubber suction cup in the device can be fixedly connected with a mold piece, the cut insulation composite mylar piece is automatically separated, the stripping speed is high, and the stripping efficiency is high; the limiting removing mechanism can control the insulation composite mylar to be automatically separated, and workers can take the insulation composite mylar conveniently.

This invention provides an intelligent inspection method, system, equipment, and medium for railway freight inspection, belonging to the field of railway freight inspection technology. The method includes: acquiring images of the freight cars using a line-scan camera array on both sides and the top of the track; performing spatiotemporal synchronization and adaptive parameter adjustment based on an encoder and a precise clock protocol; performing geometric correction, flat-field correction, motion compensation, and stitching on the images to generate a two-dimensional unfolded image of the freight car; using a deep learning-based freight car segmentation model to segment and number freight car instances, and extracting images of individual freight cars; finally, using a damage detection model integrating severity assessment to identify damage, outputting a structured result including damage category, location, confidence level, and severity score. This invention achieves non-contact, full-coverage, and high-precision intelligent inspection of freight cars, effectively improving inspection efficiency and automation levels.

The utility model discloses a material distributing and sheet inserting device which comprises a material carrying frame, a material distributing push head, a sheet inserting material frame and a sheet inserting mechanical arm. A material falling channel is formed in the material carrying frame, a pile of stacked material sheets can fall into the material falling channel downwards, a material outlet is transversely formed in the bottom edge of the side wall of the material falling channel, and only the lowest material sheet in the material falling channel can transversely pass through the material outlet; the material distribution pushing head is provided with a material pushing part, the material pushing part directly faces one end, located in the material falling channel, of the material outlet, and the material distribution pushing head is arranged in a sliding mode so as to drive the material pushing part to be away from the material outlet and retreat from the position under the material falling channel or drive the material pushing part to be close to the material outlet to push the lowest material piece in the material falling channel out of the material carrying frame from the material outlet; a plurality of material sheet insertion grooves are formed in the insertion sheet material frame at intervals, and each material sheet insertion groove is used for insertion of one material sheet; the sheet inserting mechanical arm is arranged outside the discharging port and used for inserting the material sheets pushed out of the discharging port into the material sheet inserting grooves. According to the material sheet separating device, all material sheets in a pile of material sheets can be automatically separated.

The invention discloses a die-casting mold for aluminum castings, belonging to the technical field of die-casting equipment. The die-casting mold for aluminum castings comprises a fixed die assembly, a movable die assembly and a material flipping frame. A material injection component is fixedly arranged on one side of the fixed die assembly, and the movable die assembly is arranged on the other side of the fixed die assembly. A bottom plate is fixedly arranged on the other side of the movable die assembly. Guide columns are symmetrically arranged on the bottom plate. The other end of the guide column is fixedly connected to the fixed die assembly. The guide column runs through the movable die assembly. The movable die assembly is slidably connected to the guide column. A hydraulic push rod is also fixedly connected to the bottom plate. The other end of the hydraulic push rod is fixedly connected to the movable die assembly. The material flipping frame is rotatably connected to the fixed die assembly. The invention can automatically separate the aluminum casting from the flash after the conjoined casting is ejected from the mold, and can collect the aluminum casting and the flash separately, with a fast recovery speed, which effectively improves production efficiency.

The invention discloses high-transmittance self-cleaning coated glass and a preparation method thereof, and belongs to the technical field of functional glass. The components of the high-transmittance coating film comprise magnesium fluoride, titanium dioxide, zinc fluoride and zinc salt, magnesium fluoride, titanium dioxide and zinc fluoride have high refractive indexes, light reflection can be effectively reduced, when light is emitted into the glass from air, light can be reflected on the upper interface and the lower interface of the high-transmittance coating film, and the light transmittance is improved. The reflected light on the two interfaces is subjected to destructive interference, so that the intensity of the reflected light is reduced, the reduction of the reflected light means that the transmission light is increased, and the light transmission of the glass is improved. The micro-nano array is arranged on the surface of the coated glass, so that the light transmittance of the glass can be improved, the surface characteristics of the glass can be effectively improved, dust, organic pollutants and the like are automatically separated from the surface of the glass under the washing of rainwater, and the self-cleaning effect of the glass is improved.

The utility model discloses a black tea leaf drying device, which belongs to the technical field of tea leaf processing and comprises a mounting seat, a drying box is mounted on the mounting seat, a sealing door is arranged on the drying box, a rotating shaft is mounted on the drying box, a plurality of groups of drying components are arranged on the rotating shaft, and a control component is arranged on the mounting seat. And the control assembly is in transmission connection with the rotating shaft. The arc-shaped drying disc and the tea scrap collecting disc are arranged to be matched with the control assembly, so that scraps can be reduced when tea leaves on the drying disc are turned over, and the scraps and the tea leaves are automatically separated and collected; meanwhile, turning operation is completed in the closed space, and heat loss can be reduced to the maximum extent; by arranging a push plate and a scraping plate, automatic collection of tea scraps can be completed, the labor intensity of workers is reduced, and the cleanliness of the drying box is guaranteed; and by arranging the water collecting tray and the water guide holes, condensed water drops can be automatically collected and guided out and are prevented from dripping into the tea leaves.

The invention provides a digital intelligent fire control device, and relates to the technical field of fire control devices, the device comprises a fire controller, the side wall of the fire controller is provided with a storage bin, and the inner walls of the left and right sides of the storage bin are fixedly provided with two first support strips and two second support strips; a first fire-fighting box is placed above the two first supporting strips, two second fire-fighting boxes are placed above the two second supporting strips, two first motors are fixedly installed on the inner wall of the storage bin, first threaded rods are fixedly installed on output shafts of the two first motors, and the second motor below the first fire-fighting box is started; a second motor operates to drive a second fire-fighting box to continuously move forwards through a second threaded rod, at the moment, the first fire-fighting box and the second fire-fighting box are provided with upper and lower openings, and a user can quickly take objects in the first fire-fighting box and the second fire-fighting box; and the fire-fighting main control computer can automatically open the fire-fighting main control computer, so that the use convenience can be improved, manual intervention is not needed, and the fire-fighting operation convenience is greatly improved.

The utility model relates to mechanical connection technical field, and specifically solves the technical problem that traditional quick release device cannot separate automatically when overload, separation threshold precision is low and cannot be reused. Technical scheme main points include: the locking bead of plug assembly inner periphery distribution and the annular clamping groove of socket assembly form the connection, the trigger mechanism that the glass fiber reinforced polyamide trigger ring and disc spring group constitute when axial tension reaches the preset threshold value, trigger ring occurs irreversible plastic deformation, drives locking bead to separate the clamping groove and realizes millisecond level automatic separation; the wear -resisting coating on locking bead surface and curvature optimization design reduce friction loss. The device has the characteristics of quick separation response, threshold adjustable, repeated use, and is mainly used for mountaineering safety rope, industrial robot quick change connector and sports equipment overload protection.

The utility model belongs to the technical field of detection tool measuring tools, and particularly relates to a detection assembly for spring neglected loading, which comprises a cabinet, the cabinet comprises a transmission case, a sensing module, a turntable jig and an NG material box, and aims to provide a detection tool for spring neglected loading through the arrangement of the transmission case, an IV camera, the sensing module and the turntable jig. A worker can place the side, provided with the spring, of the nozzle body on the rotary table jig towards the IV camera, then the nozzle body is scanned and shot through a lens of the IV camera, and then the shot picture can be compared with a normal installation picture in the storage module through the image sensor. Whether the spring is installed in the nozzle body as required or not is judged according to the compared matching degree, then when the matching degree of the picture is low, the rotating disc jig can be controlled through the sensing module, the rotating disc jig can push an unqualified product into the NG material box, detection through naked eyes of a worker is not needed, and the detection efficiency is improved. And the labor cost is saved while the detection quality and efficiency are improved.

The present invention belongs to the technical field of film blowing machine equipment, and in particular to a die head structure for uniform film blowing of a film blowing machine, the present invention comprises: a die base, a first die core and a second die core; a first die sleeve is connected to the periphery of the first die core, and a second die sleeve is connected to the periphery of the second die core; a feeding channel is provided between the first die core and the first die sleeve, and an annular die opening is provided between the second die sleeve and the second die core; a feeding port is provided on the die base, and a material channel connected to the feeding channel is provided on the feeding port; a film-lifting mechanism is provided at the inner periphery of the die opening; the film-lifting mechanism comprises an annular lifting seat, a lifting mechanism for driving the lifting seat to lift is fixedly installed on the die base, a ring track is connected to the periphery of the lifting seat, a rotating ring is rotatably connected to the ring track, and a plurality of rotatable reels are provided on the ring track for winding the film discharged from the die opening; the present invention can automatically pull the film out of the die opening evenly through the film-lifting mechanism, and the film-lifting efficiency is high and the effect is good.

The utility model discloses a stirring kettle capable of screening catalyst particles, and particularly relates to the technical field of stirring kettles, the stirring kettle comprises a bottom frame, the top of the bottom frame is fixedly connected with a stirring barrel, the top of the stirring barrel is provided with a top cover, the interior of the top cover is rotatably connected with a stirring shaft, and the stirring shaft is located in the stirring barrel; a stirring motor is fixedly connected to the top of the top cover, the stirring shaft is fixedly connected to the output end of the stirring motor, a discharging pipe is installed at the bottom of the stirring barrel, a valve is installed outside the discharging pipe, and a separation assembly is arranged outside the discharging pipe; the separating assembly comprises a fixing cylinder, the fixing cylinder is fixedly connected to the outer portion of the discharging pipe, the bottom of the discharging pipe is fixedly connected with a conveying cylinder, the interior of the conveying cylinder is rotationally connected with an auger rod, the top of the conveying cylinder is fixedly connected with a discharging motor, and the outer portion of the conveying cylinder is fixedly connected with an outer cover cylinder. According to the utility model, catalyst particles and liquid can be automatically separated through the separation assembly, so that the product quality is prevented from being influenced.

This invention relates to the field of computational optical imaging and microscopic image processing technology, and discloses a method and system for joint reconstruction and denoising of light field microscopy based on self-supervised learning. In the pre-training stage, the method performs random masking operations in the spatial and angular domains on large-scale light field data, guiding the encoder to learn general features through a completion task. In the model training stage, the acquired light field images are randomly divided into input and supervision viewpoints. Features are extracted using the encoder and aligned in three-dimensional space using a physical point spread function. A three-dimensional volume is generated through viewpoint pooling and a decoding network, and a self-supervised loss is established using the supervision viewpoint, achieving implicit denoising based on the independence of noise distribution between viewpoints. In the testing stage, high signal-to-noise ratio three-dimensional reconstruction results can be obtained by inputting all viewpoints. This invention does not rely on noise-free ground truth images, can adapt to different optical system configurations, and improves the reconstruction quality and denoising capability of light field microscopy imaging.

The present invention discloses a performance testing device for plastic pipe processing, which relates to the field of plastic pipe processing, and comprises a base and an operating table fixedly installed on the upper end of the base, a support frame and a support member fixedly installed on the upper end of the operating table, and the support member is located on the left side of the support frame, a drive motor fixedly installed on the left side of the operating table, and the drive motor fixedly installed on the left side of the operating table, two groups of moving plates are threadedly installed on the outer side of the threaded rod, and a moving cylinder is slidably installed on the upper end of the moving plate. The performance testing device for plastic pipe processing, by slidingly installing a limiting slider inside a limiting member and a clamping member, can make the limiting slider automatically separate from the plastic pipe while supporting the plastic pipe, thereby ensuring the stability of the unloading work of the device, and through the limiting member and the clamping member, the movement of the limiting member and the clamping member can complete the automatic loading and unloading process of the plastic pipe, thereby improving the convenience of using the device.

The utility model discloses a drainage pipeline joint and a drainage pump, and relates to the drainage pump field, the drainage pipeline joint comprises a filter cartridge, one end of the filter cartridge is communicated with a connecting pipe, a first rotating shaft is rotatably connected between two sides in the filter cartridge, and a second rotating shaft is rotatably connected between two sides in the filter cartridge. A first rotating shaft is arranged on one side of the first rotating shaft, a second rotating shaft is arranged on one side of the first rotating shaft, in the actual operation of the water purifier, after a water source is discharged into the filter cartridge through the water outlet, the impact force of water flow can push the first rotating shaft to rotate, and due to the fact that the second rotating shaft is arranged behind the first rotating shaft and is fixedly arranged, the first rotating shaft can rotate; the grinding teeth on the second rotating shaft do not move, the grinding teeth on the outer side of the first rotating shaft rotate, and the two grinding teeth are meshed with each other, so that the impurities can be ground, the generation of large impurities is reduced, and the large impurities are prevented from striking the inner wall of the filter cartridge under the action of water flow to cause damage.

The utility model discloses a novel cyclone dust removal device which comprises a base and a body, the base is directly connected to a connecting flange pipe at an air inlet of an auxiliary fan in a circulating system, the body is connected to a connecting flange pipe at the other end of the auxiliary fan circulating system through an adjusting ring, and a cyclone flow guide assembly and an inner sleeve are arranged in the body. A smoke outlet joint is arranged on the outer wall of the body and communicated with the interior of the body; the novel cyclone dust removal device is mounted at the air inlet end of the auxiliary fan on an auxiliary fan and a pipeline, smoke dust particles with large diameters are separated to the inner wall of the body under the action of centrifugal force generated by the cyclone flow guide assembly, are output from the smoke dust outlet joint through the inner sleeve along the inner wall of the body under the action of gravity and negative pressure at the smoke dust outlet joint, and enter a dust removal system; smoke dust is separated from the auxiliary fan circulating system, the circulating system is kept clean, stability of technological parameters is facilitated, the rejection rate of unqualified products is reduced, and the production cost is saved.

This utility model discloses a screening device for the production of florfenicol powder, including a tank body. An inclined sieve plate is installed inside the tank body. An upper connecting rod is hinged to both sides of the front end of the sieve plate, and a lower connecting rod is hinged to both sides of the rear end of the sieve plate. The upper ends of the upper connecting rods are hinged to the top wall of the tank body. A platform support plate is located directly above the rear end of the sieve plate inside the tank body, and the upper ends of the lower connecting rods are hinged to the lower surface of the platform support plate. A reciprocating drive device is located on one side of the sieve plate. A storage tank is located directly below the rear end of the sieve plate, and a guide plate is inclinedly installed on the lower side of the sieve plate. This utility model can prevent clogging of the sieve holes during screening, improve the screening effect, and facilitate the separate collection of larger particles and the screened finished product.

This invention relates to the field of medical device technology, and more particularly to a shock-absorbing wheelchair for orthopedic care. It includes a wheelchair body, a fixed plate fixed to the wheelchair body, a rotating plate hinged to the fixed plate, a rotating shell fixed to the rotating plate, the rotating shell being limited by the fixed plate after rotation, a support rod slidably connected to the rotating shell, a limit rod fixed to the wheelchair body, a support floor hinged to the support rod, the support floor having stripes for increasing friction, and a spring telescopic rod hinged to the wheelchair body, the telescopic end of the spring telescopic rod being hinged to the rotating shell. This invention supports the wheelchair body by causing the rotating shell to pop out and the support rod to extend when the wheelchair body tilts excessively, preventing the wheelchair from tipping over due to excessive tilting, thus protecting the patient. Furthermore, the shock absorber reduces shock, improving patient comfort.

The utility model discloses a fixed winch for water conservancy construction, which comprises a base, a driving motor arranged on the upper surface of the base, a transmission group arranged on one side of the driving motor, a rotating shaft arranged on the side wall of the transmission group and a roller arranged on one side of the rotating shaft, a second fixing frame is installed on the other side of the roller, a through groove is formed in the middle of the base in a penetrating mode, a bottom plate is installed in the through groove, a side plate is vertically connected to one side of the bottom plate, and a pin shaft is arranged at the joint of the bottom plate and the side plate in a penetrating mode. By arranging the movable plate, the effect that the roller can horizontally move on the base is achieved, and the roller and the rotating shaft are automatically separated; through the arrangement of the bottom plate and the side plates, the function of assisting the roller in automatically overturning can be achieved, the traditional mode that a lifting appliance is used for lifting is replaced, the maintenance operation steps are simplified, the roller bearing to be maintained is kept upward, and the roller bearing is convenient to maintain.